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* [Bug fortran/81552] -finit-integer=n is restricted to 32-bit INTEGER.
[not found] <bug-81552-4@http.gcc.gnu.org/bugzilla/>
@ 2019-02-09 11:02 ` dominiq at lps dot ens.fr
0 siblings, 0 replies; only message in thread
From: dominiq at lps dot ens.fr @ 2019-02-09 11:02 UTC (permalink / raw)
To: gcc-bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81552
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > IMO this PR should be closed as WONTFIX.
>
> Or document it - a single sentence should be enough.
Well the following patch (untested) "fixes" this PR:
--- ../_clean/gcc/fortran/gfortran.h 2019-02-02 17:23:28.000000000 +0100
+++ gcc/fortran/gfortran.h 2019-02-09 11:17:44.000000000 +0100
@@ -2681,7 +2681,7 @@ typedef struct
int flag_preprocessed;
int flag_d_lines;
int flag_init_integer;
- int flag_init_integer_value;
+ long int flag_init_integer_value;
int flag_init_logical;
int flag_init_character;
char flag_init_character_value;
@@ -708,7 +708,7 @@ gfc_handle_option (size_t scode, const c
case OPT_finit_integer_:
gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
- gfc_option.flag_init_integer_value = atoi (arg);
+ gfc_option.flag_init_integer_value = atol(arg);
break;
case OPT_finit_character_:
While playing with the problem I have noticed that if the value in
-finit-integer=N is outside the representable integer, the value is wrapped
around: if N = 128, integer(1) is initialized with -128. IMO this should be
documented.
With the above patch, this is not true for integer(8): if N=Huge(1_8)+1,
integer(8) is initialized with huge(1_8). In addition integer(16) is also
initialized with huge(1_8).
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
Date: Sat, 09 Feb 2019 11:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89200
--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 9 11:11:33 2019
New Revision: 268721
URL: https://gcc.gnu.org/viewcvs?rev=268721&root=gcc&view=rev
Log:
2019-02-09 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89200
* trans-array.c (gfc_trans_create_temp_array): Set the 'span'
field for derived types.
2019-02-09 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89200
* gfortran.dg/array_reference_2.f90 : New test.
Added:
trunk/gcc/testsuite/gfortran.dg/array_reference_2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Sat, 09 Feb 2019 11:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68241
Bug 68241 depends on bug 89200, which changed state.
Bug 89200 Summary: [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89200
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Sat, 09 Feb 2019 11:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
--- Comment #7 from Mark Wielaard <mark at gcc dot gnu.org> ---
Is this a regression that will probably be fixed for GCC 9.1 or should we be
adding workaround to the code.
Currently elfutils won't build on distros that started using the GCC 9.0
prerelease on 32bit architectures (i686, arm32):
BUILDSTDERR: readelf.c: In function 'print_debug_str_section':
BUILDSTDERR: readelf.c:10152:15: error: '%*llx' directive output between 4 and
2147483647 bytes may cause result to exceed 'INT_MAX'
[-Werror=format-overflow=]
BUILDSTDERR: 10152 | printf (" [%*" PRIx64 "] \"%s\"\n", digits,
(uint64_t) offset, str);
BUILDSTDERR: | ^~~~~~
BUILDSTDERR: readelf.c:10152:18: note: format string is defined here
BUILDSTDERR: 10152 | printf (" [%*" PRIx64 "] \"%s\"\n", digits,
(uint64_t) offset, str);
BUILDSTDERR: readelf.c:10152:15: note: directive argument in the range [0,
18446744073709551614]
BUILDSTDERR: 10152 | printf (" [%*" PRIx64 "] \"%s\"\n", digits,
(uint64_t) offset, str);
BUILDSTDERR: |
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
Date: Sat, 09 Feb 2019 11:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89200
Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Thanks for the report.
Paul
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From: "ohaiziejohwahkeezuoz at xff dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Sat, 09 Feb 2019 11:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89260
--- Comment #2 from ohaiziejohwahkeezuoz at xff dot cz ---
The main problem is elsewhere (read_cgraph_and_symbols looks just like some
cascading assertion failure because of some other segfault). I recompiled gcc
with -Og -ggdb and managed to produce this backtrace:
Thread 6.1 "lto1-wpa" received signal SIGSEGV, Segmentation fault.
[Switching to process 20627]
0x000000000090c7ac in is_a_helper<cgraph_node*>::test<symtab_node>
(p=0x622e7365646f6e5f) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/cgraph.h:1953
1953 return p && p->type == SYMTAB_FUNCTION;
(gdb) bt
#0 0x000000000090c7ac in is_a_helper<cgraph_node*>::test<symtab_node>
(p=0x622e7365646f6e5f) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/cgraph.h:1953
#1 is_a<cgraph_node*, symtab_node> (p=0x622e7365646f6e5f) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/is-a.h:187
#2 dyn_cast<cgraph_node*, symtab_node> (p=0x622e7365646f6e5f) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/is-a.h:224
#3 input_node (file_data=file_data@entry=0x7ffff70ac000,
ib=ib@entry=0x19ca940, tag=LTO_symtab_unavail_node, nodes=nodes@entry=...)
at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/lto-cgraph.c:1253
#4 0x0000000000910480 in input_cgraph_1
(file_data=file_data@entry=0x7ffff70ac000, ib=ib@entry=0x19ca940) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/lto-cgraph.c:1556
#5 0x0000000000910a25 in input_symtab () at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/lto-cgraph.c:1864
#6 0x00000000005f6962 in read_cgraph_and_symbols (nfiles=344,
fnames=0x1991aa0) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/lto/lto.c:2897
#7 0x00000000005f6db8 in lto_main () at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/lto/lto.c:3362
#8 0x0000000000a59b7a in compile_file () at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/toplev.c:455
#9 0x0000000000a5bba7 in do_compile () at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/toplev.c:2132
#10 0x0000000000a5c120 in toplev::main (this=this@entry=0x7fffffffd1e6,
argc=<optimized out>, argc@entry=29, argv=<optimized out>,
argv@entry=0x7fffffffd2e8)
at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/toplev.c:2267
#11 0x00000000011c4c30 in main (argc=29, argv=0x7fffffffd2e8) at
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/gcc/main.c:39
(gdb) l
1948 template <>
1949 template <>
1950 inline bool
1951 is_a_helper <cgraph_node *>::test (symtab_node *p)
1952 {
1953 return p && p->type == SYMTAB_FUNCTION;
1954 }
1955
1956 /* Report whether or not THIS symtab node is a vriable, aka
varpool_node. */
1957
(gdb) p p
$1 = (symtab_node *) 0x622e7365646f6e5f
(gdb) p *p
Cannot access memory at address 0x622e7365646f6e5f
Looks like some memory corruption bug.
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Subject: [Bug c/89264] New: Incorrect bitfield type in -Wconversion warnings
Date: Sat, 09 Feb 2019 11:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89264
Bug ID: 89264
Summary: Incorrect bitfield type in -Wconversion warnings
Product: gcc
Version: 7.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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void f() { struct{ unsigned x:1; }x = { (unsigned){0} }; }
warns about a conversion to `unsigned char:1`. It should say `unsigned int:1`.
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Subject: [Bug c/89265] New: Incorrect bitfield type in -Wconversion warnings
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89265
Bug ID: 89265
Summary: Incorrect bitfield type in -Wconversion warnings
Product: gcc
Version: 7.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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void f() { struct{ unsigned x:1; }x = { (unsigned){0} }; }
warns about a conversion to `unsigned char:1`. It should say `unsigned int:1`.
>From gcc-bugs-return-633015-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 11:59:01 2019
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Subject: [Bug c/89265] Incorrect bitfield type in -Wconversion warnings
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89265
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
.
*** This bug has been marked as a duplicate of bug 89264 ***
>From gcc-bugs-return-633016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 11:59:02 2019
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Subject: [Bug c/89264] Incorrect bitfield type in -Wconversion warnings
Date: Sat, 09 Feb 2019 11:59:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 89265 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:25:22 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89261] ix86_data_alignment has wrong argument type
Date: Sat, 09 Feb 2019 12:25:00 -0000
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> (In reply to H.J. Lu from comment #0)
> > i386.c has
> >
> > int
> > ix86_data_alignment (tree type, int align, bool opt)
> >
> > But "align" passed down is unsigned.
>
> Where is the bug?
>
> I don't think anybody passed negative alignment or alignment >= 2G.
This is a valid code:
[hjl@gnu-skx-1 gcc]$ cat /tmp/x.i
typedef double __v2df __attribute__ ((__vector_size__ (16), aligned(1 << 28)));
__v2df foo = { 1.0, 2.0 };
[hjl@gnu-skx-1 gcc]$ gcc -S /tmp/x.i
[hjl@gnu-skx-1 gcc]$ cat x.s
.file "x.i"
.text
.globl foo
.data
.align 16 <<<<<<<<<<<< This is wrong.
.type foo, @object
.size foo, 16
foo:
.long 0
.long 1072693248
.long 0
.long 1073741824
.ident "GCC: (GNU) 8.2.1 20190109 (Red Hat 8.2.1-7)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-skx-1 gcc]$
>From gcc-bugs-return-633018-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:27:37 2019
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From: "konraddabrowski at yahoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87770] [8 Regression] ICE in type_dependent_expression_p, at cp/pt.c:25230
Date: Sat, 09 Feb 2019 12:27:00 -0000
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--- Comment #7 from Konrad Dabrowski <konraddabrowski at yahoo dot co.uk> ---
Thank you for fixing this. Would it be possible to backport this patch to the
gcc-8 branch?
>From gcc-bugs-return-633019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:37:11 2019
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Subject: [Bug fortran/89266] New: ICE with TRANSFER of len=0 character array constructor
Date: Sat, 09 Feb 2019 12:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
Bug ID: 89266
Summary: ICE with TRANSFER of len=0 character array constructor
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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$ cat tst3.f90
program test
implicit none
integer :: i
character(*), parameter :: y = ''
character(*), parameter :: z = transfer ([''], y)
end
$ gfortran tst3.f90
f951: interner Compiler-Fehler: Speicherzugriffsfehler
0xe24dff crash_signal
../../trunk/gcc/toplev.c:326
0x843411 add_init_expr_to_sym
../../trunk/gcc/fortran/decl.c:1924
0x84c5dd variable_decl
../../trunk/gcc/fortran/decl.c:2864
0x84c5dd gfc_match_data_decl()
../../trunk/gcc/fortran/decl.c:6005
0x8aac50 match_word
../../trunk/gcc/fortran/parse.c:65
0x8aac50 decode_statement
../../trunk/gcc/fortran/parse.c:376
0x8ae6f4 next_free
../../trunk/gcc/fortran/parse.c:1241
0x8ae6f4 next_statement
../../trunk/gcc/fortran/parse.c:1473
0x8afd5a parse_spec
../../trunk/gcc/fortran/parse.c:3865
0x8b257c parse_progunit
../../trunk/gcc/fortran/parse.c:5680
0x8b3923 gfc_parse_file()
../../trunk/gcc/fortran/parse.c:6220
0x8fd0af gfc_be_parse_file
../../trunk/gcc/fortran/f95-lang.c:204
Variant:
$ cat tst3.f90
program test
implicit none
integer :: i
character(*), parameter :: y = 'efcdab'
character(6), save :: z = transfer ([''], y)
print *,len(z)
end
$ gfortran tst3.f90
tst3.f90:1:0:
1 | program test
|
interner Compiler-Fehler: in gfc_conv_string_init, bei
fortran/trans-const.c:147
0x6181c5 gfc_conv_string_init(tree_node*, gfc_expr*)
../../trunk/gcc/fortran/trans-const.c:147
0x9412f0 gfc_conv_initializer(gfc_expr*, gfc_typespec*, tree_node*, bool, bool,
bool)
../../trunk/gcc/fortran/trans-expr.c:7351
0x928389 gfc_get_symbol_decl(gfc_symbol*)
../../trunk/gcc/fortran/trans-decl.c:1831
0x92aee7 generate_local_decl
../../trunk/gcc/fortran/trans-decl.c:5621
0x8e8622 do_traverse_symtree
../../trunk/gcc/fortran/symbol.c:4155
0x92c074 generate_local_vars
../../trunk/gcc/fortran/trans-decl.c:5821
0x92c074 gfc_generate_function_code(gfc_namespace*)
../../trunk/gcc/fortran/trans-decl.c:6465
0x8b3f0e translate_all_program_units
../../trunk/gcc/fortran/parse.c:6134
0x8b3f0e gfc_parse_file()
../../trunk/gcc/fortran/parse.c:6337
0x8fd0af gfc_be_parse_file
../../trunk/gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-633021-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:40:23 2019
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Subject: [Bug libbacktrace/57591] gcc-4.8 libbacktrace btest failure on Linux ppc64
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
4.8 is no longer supported (and neither are 4.9, 5, or 6). I'm closing this
bug; please reopen it if it still happens (with trunk or another supported
version). Thanks!
>From gcc-bugs-return-633020-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:40:09 2019
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Blocks| |19276, 31237
--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Goes back a long time, at least to gcc 6.
I also think that this is valid code, but if somebody can find
language in the standard that says otherwise, please correct.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19276
[Bug 19276] [meta-bug] CHARACTER related bugs in gfortran
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31237
[Bug 31237] [meta-bug] TRANSFER intrinsic
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343
--- Comment #35 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Sat Feb 9 12:44:02 2019
New Revision: 268722
URL: https://gcc.gnu.org/viewcvs?rev=268722&root=gcc&view=rev
Log:
[RS6000] Correct save_reg_p
PR target/88343
* config/rs6000/rs6000.c (rs6000_reg_live_or_pic_offset_p): Match
logic in rs6000_emit_prologue emitting pic_offset_table setup.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.c
>From gcc-bugs-return-633023-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 12:54:55 2019
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Subject: [Bug c++/89267] New: [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
Date: Sat, 09 Feb 2019 12:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89267
Bug ID: 89267
Summary: [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C
(test for excess errors)
Product: gcc
Version: 8.2.1
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r268714 gave:
spawn -ignore SIGHUP
/export/gnu/import/git/gcc-test/bld/gcc/testsuite/g++/../../xg++
-B/export/gnu/import/git/gcc-test/bld/gcc/testsuite/g++/../../
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/export/gnu/import/git/gcc-test/bld/i686-pc-linux-gnu/libstdc++-v3/include/i686-pc-linux-gnu
-I/export/gnu/import/git/gcc-test/bld/i686-pc-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/gcc-test/src-8/libstdc++-v3/libsupc++
-I/export/gnu/import/git/gcc-test/src-8/libstdc++-v3/include/backward
-I/export/gnu/import/git/gcc-test/src-8/libstdc++-v3/testsuite/util
-fmessage-length=0 -std=c++17 -S -o constexpr-lambda8.s^M
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:11:27:
error: non-constant condition for static assertion^M
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:11:19:
in 'constexpr' expansion of 'Fwd.<lambda(int (*)(int),
auto:1)>(NC.<lambda(auto:3)>::operator int (*)(int)<int>(), 3)'^M
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:9:48:
error: call to non-'constexpr' function '<lambda(auto:3)> [with auto:3 =
int]'^M
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:9:20:
note: '<lambda(auto:3)> [with auto:3 = int]' is not usable as a 'constexpr'
function because:^M
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:9:35:
error: 's' declared 'static' in 'constexpr' context^M
compiler exited with status 1
PASS: g++.dg/cpp1z/constexpr-lambda8.C (test for errors, line 9)
PASS: g++.dg/cpp1z/constexpr-lambda8.C (test for warnings, line 11)
PASS: g++.dg/cpp1z/constexpr-lambda8.C (test for errors, line 11)
FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
Excess errors:
/export/gnu/import/git/gcc-test/src-8/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda8.C:9:48:
error: call to non-'constexpr' function '<lambda(auto:3)> [with auto:3 = int]'
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Subject: [Bug libbacktrace/57591] gcc-4.8 libbacktrace btest failure on Linux ppc64
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--- Comment #7 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #6)
> please reopen it if it still happens (with trunk or another supported
> version). Thanks!
And if it still happens, please attach the log for the failing test-case:
btest.log.
Thanks,
- Tom
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-09
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Goes back a long time, at least to gcc 6.
at least 4.8.
>From gcc-bugs-return-633026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 13:12:58 2019
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Subject: [Bug c++/89267] [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
Date: Sat, 09 Feb 2019 13:12:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-09
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Target Milestone|--- |8.3
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This changed with r268700, the same set of errors/notes is emitted before and
after, but
error: call to non-‘constexpr’ function ‘<lambda(auto:3)> [with auto:3 = int]’
used to be emitted on line 11 and now is emitted on line 9 instead. Note,
trunk emits it on line 11.
Do we want to adjust the testcase, or change something in the compiler?
>From gcc-bugs-return-633027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 13:16:44 2019
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Subject: [Bug c++/86943] [7 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Sat, 09 Feb 2019 13:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.2.1
Summary|[7/8 Regression] Wrong code |[7 Regression] Wrong code
|when converting stateless |when converting stateless
|generic lambda to function |generic lambda to function
|pointer |pointer
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3 too.
>From gcc-bugs-return-633028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 13:18:02 2019
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Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
Date: Sat, 09 Feb 2019 13:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-633029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 14:09:39 2019
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Subject: [Bug libbacktrace/60240] libbacktrace problems with nested functions
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com,
| |ian at gcc dot gnu.org,
| |vries at gcc dot gnu.org
Component|other |libbacktrace
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
I can reproduce this.
But, I wonder if this an actual bug, given that the address of the nested
function that is passed as argument to backtrace_pcinfo is either a trampoline
on stack or some function descriptor (
https://gcc.gnu.org/onlinedocs/gccint/Trampolines.html ).
Using a backtrace_print from a nested function works fine.
I propose to mark this resolved-invalid.
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89268] New: [9 Regression] r268689 caused FAIL: gcc.dg/vect/pr79887.c
Date: Sat, 09 Feb 2019 14:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89268
Bug ID: 89268
Summary: [9 Regression] r268689 caused FAIL:
gcc.dg/vect/pr79887.c
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: rguenther at suse dot de
Target Milestone: ---
r268689 caused:
[hjl@gnu-skx-1 gcc-bisect]$ cat gcc/gcc/testsuite/gcc.dg/vect/pr79887.c
/* Test for pr79887. */
/* { dg-do compile } */
/* { dg-require-effective-target vect_condition } */
/* { dg-additional-options "-fno-trapping-math --param vect-epilogues-nomask=1"
} */
/* { dg-additional-options "-mavx512ifma" { target x86_64-*-* i?86-*-* } } */
void
foo (float a[32], float b[2][32])
{
int i;
for (i = 0; i < 32; i++)
a[i] = (b[0][i] > b[1][i]) ? b[0][i] : b[1][i];
}
[hjl@gnu-skx-1 gcc-bisect]$ ./master/268689/usr/bin/gcc -S
gcc/gcc/testsuite/gcc.dg/vect/pr79887.c -mavx512ifma -fno-trapping-math --param
vect-epilogues-nomask=1 -mtune=intel -O3
during GIMPLE pass: vect
gcc/gcc/testsuite/gcc.dg/vect/pr79887.c: In function \u2018foo\u2019:
gcc/gcc/testsuite/gcc.dg/vect/pr79887.c:8:1: internal compiler error:
Segmentation fault
8 | foo (float a[32], float b[2][32])
| ^~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
[hjl@gnu-skx-1 gcc-bisect]$
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Subject: [Bug libbacktrace/69314] Use of uninitialised value in libbacktrace/pecoff.c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69314
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Fixed in r257040.
https://gcc.gnu.org/ml/gcc-cvs/2018-01/msg00986.html :
Author: ian
Date: Thu Jan 25 02:42:26 2018
New Revision: 257040
URL: https://gcc.gnu.org/viewcvs?rev=257040&root=gcc&view=rev
Log:
* pecoff.c (coff_add): Use coff_read4, not memcpy.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/pecoff.c
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Subject: [Bug fortran/88326] [7/8/9 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Sat, 09 Feb 2019 15:07:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in |[7/8/9 Regression] ICE in
|gfc_conv_array_initializer, |gfc_conv_array_initializer,
|at |at
|fortran/trans-array.c:6085 |fortran/trans-array.c:6085
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> The change occurred between revisions r188694 (2012-06-16, error) and
> r188914 (2012-06-24, ICE).
>
> Note that the third test in comment 0 compiles with r188694.
A regression (at least this part), then.
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Subject: [Bug middle-end/21014] read-rtl.c:670: warning: missing sentinel in function call
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from John David Anglin <danglin at gcc dot gnu.org> ---
This doesn't occur anymore.
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Subject: [Bug bootstrap/44756] [meta-bug] --enable-werror-always issues
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Bug 44756 depends on bug 21014, which changed state.
Bug 21014 Summary: read-rtl.c:670: warning: missing sentinel in function call
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21014
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
does this still happen?
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Subject: =?UTF-8?B?W0J1ZyB0cmVlLW9wdGltaXphdGlvbi81NjQ1N10gQm9ndXMgd2FybmluZzog?= =?UTF-8?B?bG9vcC1pbnZhcmlhbnQuYzo3ODY6MjA6IGVycm9yOiB1bnVzZWQgdmFyaWFi?= =?UTF-8?B?bGUg4oCYcmVnbm/igJkgd2hlbiBidWlsZGluZyB2YXgtKi0q?Date: Sat, 09 Feb 2019 15:54:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
Does this still happen?
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
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--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sat Feb 9 16:28:45 2019
New Revision: 268723
URL: https://gcc.gnu.org/viewcvs?rev=268723&root=gcc&view=rev
Log:
PR ipa/88711
* gfortran.dg/pr79966.f90: Xfail everwyhere.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/pr79966.f90
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Subject: [Bug tree-optimization/89268] [9 Regression] r268689 caused FAIL: gcc.dg/vect/pr79887.c
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-09
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think we want:
--- gcc/tree-if-conv.c.jj 2019-02-08 20:00:40.774827920 +0100
+++ gcc/tree-if-conv.c 2019-02-09 17:35:36.995782510 +0100
@@ -2760,7 +2760,8 @@ version_loop_for_if_conversion (struct l
new_loop->force_vectorize = false;
gsi = gsi_last_bb (cond_bb);
gimple_call_set_arg (g, 1, build_int_cst (integer_type_node,
new_loop->num));
- preds->safe_push (g);
+ if (preds)
+ preds->safe_push (g);
gsi_insert_before (&gsi, g, GSI_SAME_STMT);
update_ssa (TODO_update_ssa);
return new_loop;
so that it behaves as before when called from tree-vect-loop.c (preds is NULL).
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45650
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45650&action=edit
gcc9-pr89268.patch
Full untested patch.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
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--- Comment #10 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Sat Feb 9 17:11:06 2019
New Revision: 268725
URL: https://gcc.gnu.org/viewcvs?rev=268725&root=gcc&view=rev
Log:
2019-02-09 Aaron Sawdey <acsawdey@linux.ibm.com>
Backported from mainline
2019-02-05 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/89112
* config/rs6000/rs6000.md (<bd>tf_<mode>): Generate a local label
for the long branch case.
2019-02-05 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/89112
* config/rs6000/rs6000-string.c (do_ifelse, expand_cmp_vec_sequence,
expand_compare_loop, expand_block_compare_gpr,
expand_strncmp_align_check, expand_strncmp_gpr_sequence): Insert
REG_BR_PROB notes in inline expansion of memcmp/strncmp. Add
#include "profile-count.h" and "predict.h" for types and functions
needed to work with REG_BR_PROB notes.
2019-02-09 Aaron Sawdey <acsawdey@linux.ibm.com>
* config/rs6000/rs6000-string.c (expand_compare_loop,
expand_block_compare): Insert REG_BR_PROB notes in inline expansion of
memcmp/strncmp.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000-string.c
branches/gcc-8-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
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acsawdey at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #11 from acsawdey at gcc dot gnu.org ---
This is fixed in trunk and gcc-8-branch. Hopefully I got this into 8 in time
for it to get into 8.3.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #13 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Feb 9 17:25:23 2019
New Revision: 268726
URL: https://gcc.gnu.org/viewcvs?rev=268726&root=gcc&view=rev
Log:
2019-02-09 Harald Anlauf <anlauf@gmx.de>
PR fortran/89077
* resolve.c (gfc_resolve_substring_charlen): Check substring
length for constantness prior to general calculation of length.
PR fortran/89077
* gfortran.dg/substr_simplify.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/substr_simplify.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/88755] [9 Regression] ICE in compute_fn_summary, at ipa-fnsummary.c:2513 since r267601
Date: Sat, 09 Feb 2019 17:56:00 -0000
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--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sat Feb 9 17:56:22 2019
New Revision: 268727
URL: https://gcc.gnu.org/viewcvs?rev=268727&root=gcc&view=rev
Log:
PR ipa/88755
* params.def (uninlined-function-insns, uninlined-function-time,
uninlined-thunk-insns, uninlined-thunk-time): Add artificial upper
bound so we don't get overflows.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/params.def
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Subject: [Bug c++/89267] [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
Date: Sat, 09 Feb 2019 17:56:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The trunk has unlike 8.x the first hunk from r268377 which handles
CALL_FROM_THUNK_P elsewhere, and that is where it clears EXPR_LOCATION on the
call too.
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Subject: [Bug ipa/88755] [9 Regression] ICE in compute_fn_summary, at ipa-fnsummary.c:2513 since r267601
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
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--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libstdc++/87809] [8/9 Regression] Can't create empty std::optional<std::vector<int, CustomAlloc>>
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--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sat Feb 9 18:01:03 2019
New Revision: 268728
URL: https://gcc.gnu.org/viewcvs?rev=268728&root=gcc&view=rev
Log:
PR lto/87809
* tree.c (fld_simplified_type_name): Use DECL_ASSEMBLER_NAME_SET_P
instead of type_with_linkage.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug lto/87089] [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
Date: Sat, 09 Feb 2019 18:05:00 -0000
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--- Comment #10 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Jason,
I can avoid the ICE by simply not simplifying contexts for all C++ destructors.
Index: tree.c
===================================================================
--- tree.c (revision 268728)
+++ tree.c (working copy)
@@ -5772,7 +5772,7 @@ free_lang_data_in_decl (tree decl, struc
these are needed by devirtualization. */
if (TREE_CODE (decl) != FIELD_DECL
&& ((TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != FUNCTION_DECL)
- || !DECL_VIRTUAL_P (decl)))
+ || (!DECL_VIRTUAL_P (decl) && !DECL_CXX_DESTRUCTOR_P (decl))))
DECL_CONTEXT (decl) = fld_decl_context (DECL_CONTEXT (decl));
}
but it seems to me this is more a workaround - if the destructor is virtual, it
should have VIRTUAL flag set. Or is there any reason we want to handle it
differently then any other normal virutal function in the middle-end?
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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--- Comment #34 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
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--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Definitly not P1 anymore. The testcase is still not optimized well, but I think
it falls into the general category that Fotran programming style prefers more
inlining than C/C++ and it may make sense to declare all Fortran functions
inline or have some other flag telling middle-end to inline more.
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Subject: [Bug d/89177] unaligned memory access in libphobos
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--- Comment #1 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45651
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45651&action=edit
proposed patch
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #28 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Ramana Radhakrishnan from comment #27)
> (In reply to Bernd Edlinger from comment #25)
> > you might consider adding something like that to your patch:
> >
> > Index: elf.h
> > ===================================================================
> > --- elf.h (revision 268337)
> > +++ elf.h (working copy)
> > @@ -64,7 +64,7 @@
> > %{mapcs-*:-mapcs-%*} \
> > %(subtarget_asm_float_spec) \
> > %{mthumb-interwork:-mthumb-interwork} \
> > -%{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \
> > +%{mfloat-abi=*} %{!mfpu=auto: %{!mfpu=none: %{mfpu=*}}} \
> > %(subtarget_extra_asm_spec)"
> > #endif
> >
> >
> >
> > otherwise using -mfpu=none won't work on the command line.
> > becuse gas does not understand it.
>
> Yes, that's what I've been playing with. I've run out of time this week
> because of other work commitments, I hope to get back to this early next
> week.
>
> Ramana
It is a bit unfortunate that -mfpu= on the command line seems to have
an impact on the eabi_attribute section, while the pragma does not:
if (TARGET_HARD_FLOAT && TARGET_VFP_SINGLE)
arm_emit_eabi_attribute ("Tag_ABI_HardFP_use", 27, 1);
if (TARGET_HARD_FLOAT_ABI)
arm_emit_eabi_attribute ("Tag_ABI_VFP_args", 28, 1);
where TARGET_HARD_FLOAT and TARGET_VFP_SINGLE are defined as follows:
#define TARGET_HARD_FLOAT (arm_float_abi != ARM_FLOAT_ABI_SOFT \
&& bitmap_bit_p (arm_active_target.isa, \
isa_bit_vfpv2) \
&& TARGET_32BIT)
#define TARGET_VFP_DOUBLE (bitmap_bit_p (arm_active_target.isa,
isa_bit_fp_dbl))
#define TARGET_VFP_SINGLE (!TARGET_VFP_DOUBLE)
But arm_active_target.isa seems to depend on the effective -mfpu= command line
option, while later in the code generation the same macros are used to
select the use of VFP instructions.
I wonder if it would be better to have an orthogonal way to specify
the used ABI and the used register banks.
So like -mfpu=vfpv3-d16 and -mno-vfp,
where -mfpu= affects the eabi_attribute only
and -mno-vfp makes sure that no VFP registers are used, and, in particular
if functions are defined or called, where the ABI is incompatible because it
passes the values in VFP registers, that should be diagnosed, because it
will not work as expected.
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Subject: [Bug libbacktrace/60240] libbacktrace problems with nested functions
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
I agree that this example cannot be expected to work. The docs for
backtrace_pcinfo say that the function works when "Given PC, a program counter
in the current program." The value (uintptr_t)&a is not a program counter in
the current program.
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Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: rtos.pharos at outlook dot com
Target Milestone: ---
Hello all,
I'm working on Pharos operating system
https://sourceforge.net/projects/rtospharos/ (maybe this information could be
useful for debugging the issue).
In RISC-V (riscv64-unknown-elf-gcc) version 8.2.0 the following code:
void aperiodicThread0_0()
{
PharosHwQueueSendR sendResult;
uint8_t message[] = {
0xda , 0x4f , 0xc2 , 4 , 5 , 6 , 7 , 8
};
.
.
.
}
(the important part is the message variable that is declared on the stack) this
code compiles into:
800013ac: 1101 addi sp,sp,-32
800013ae: ec06 sd ra,24(sp)
800013b0: e822 sd s0,16(sp)
800013b2: 1000 addi s0,sp,32
PharosHwQueueSendR sendResult;
uint8_t message[] = {
800013b4: 00bff797 auipc a5,0xbff
800013b8: 04c78793 addi a5,a5,76 # 80c00400
<partition1BssEnd>
800013bc: 639c ld a5,0(a5)
800013be: fef43023 sd a5,-32(s0)
0xda , 0x4f , 0xc2 , 4 , 5 , 6 , 7 , 8
That is, the "message" variable is placed after the partition1BssEnd section
(this is defined on the linker script). Even with optimizations (this code was
compiled -O0) this should not occur. In short, I am developing an OS with
everything defined statically, so that at startup the OS already knows where to
place every global variable and we can protect the memory of each
partition/process. If variables that should on stack are placed on a global
section (not even on the partition that they belong to) that screws up the
mechanism.
Best regards,
Pharos Team
>From gcc-bugs-return-633055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 20:02:25 2019
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
Date: Sat, 09 Feb 2019 20:02:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
The data at 80c00400 is the template from which message is initialized on the
stack. Nothing ever writes to it.
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
Date: Sat, 09 Feb 2019 20:07:00 -0000
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--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Sat, Feb 09, 2019 at 06:12:53PM +0000, hubicka at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88711
>
> --- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
> Definitly not P1 anymore. The testcase is still not optimized well, but I think
> it falls into the general category that Fotran programming style prefers more
> inlining than C/C++ and it may make sense to declare all Fortran functions
> inline or have some other flag telling middle-end to inline more.
>
Interesting. So, my interpretation is
"I committed a patch that causes a regression in the Fortran
testsuite. Clearly, the problem is with Fortran not my patch.
I don't care about Fortran or respect those that work on the
Fortran FE. Therefore, I just XFAIL the regressing test
case and call it Good(tm)."
Thanks.
How about reverting your patch?
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Subject: [Bug fortran/71860] [7/8 Regression] [OOP] ICE on pointing to null(mold), verify_gimple failed
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 9 20:07:28 2019
New Revision: 268730
URL: https://gcc.gnu.org/viewcvs?rev=268730&root=gcc&view=rev
Log:
2019-02-09 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71860
Backport from trunk
* gfortran.dg/null_10.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/null_10.f90
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/71860] [7/8 Regression] [OOP] ICE on pointing to null(mold), verify_gimple failed
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 9 20:09:56 2019
New Revision: 268731
URL: https://gcc.gnu.org/viewcvs?rev=268731&root=gcc&view=rev
Log:
2019-02-09 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71860
Backport from trunk
* gfortran.dg/null_10.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/null_10.f90
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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From: "gandalf at winds dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89270] New: [9 regression] AVR ICE: verify_gimple failed
Date: Sat, 09 Feb 2019 20:11:00 -0000
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Bug ID: 89270
Summary: [9 regression] AVR ICE: verify_gimple failed
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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I get an ICE on the following code with GCC 9.0.1 20190209 (experimental)
compiled for AVR. Works in GCC 8.x.
void test()
{
extern const unsigned char __memx __data_load_end;
__uint24 top=(__uint24)&__data_load_end;
}
# avr-gcc -v -save-temps -mmcu=atmega1284p -c test2.c -o test.o
Using built-in specs.
Reading specs from
/usr/local/avr/lib/gcc/avr/9.0.1/device-specs/specs-atmega1284p
COLLECT_GCC=avr-gcc
Target: avr
Configured with: ../configure --target=avr --prefix=/usr/local/avr
--disable-nls --enable-languages=c --disable-bootstrap --disable-libssp
Thread model: single
gcc version 9.0.1 20190209 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-o' 'test.o'
'-specs=device-specs/specs-atmega1284p' '-mmcu=avr51'
/usr/local/avr/libexec/gcc/avr/9.0.1/cc1 -E -quiet -v -imultilib avr51
-D__AVR_ATmega1284P__ -D__AVR_DEVICE_NAME__=atmega1284p test2.c -mn-flash=2
-mno-skip-bug -mmcu=avr51 -fpch-preprocess -o test2.i
ignoring nonexistent directory
"/usr/local/avr/lib/gcc/avr/9.0.1/../../../../avr/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/avr/lib/gcc/avr/9.0.1/include
/usr/local/avr/lib/gcc/avr/9.0.1/include-fixed
/usr/local/avr/lib/gcc/avr/9.0.1/../../../../avr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-o' 'test.o'
'-specs=device-specs/specs-atmega1284p' '-mmcu=avr51'
/usr/local/avr/libexec/gcc/avr/9.0.1/cc1 -fpreprocessed test2.i -mn-flash=2
-mno-skip-bug -quiet -dumpbase test2.c -mmcu=avr51 -auxbase-strip test.o
-version -o test2.s
GNU C17 (GCC) version 9.0.1 20190209 (experimental) (avr)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C17 (GCC) version 9.0.1 20190209 (experimental) (avr)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.2,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 7a3227a0716f5444cb50a3b2fc4e4212
test2.c: In function 'test':
test2.c:1:6: error: invalid types in nop conversion
1 | void test()
| ^~~~
long int
const <address-space-7> unsigned char *
_1 = (long int) &__data_load_end;
test2.c:1:6: internal compiler error: verify_gimple failed
0xc5df1d verify_gimple_in_seq(gimple*)
../../gcc/tree-cfg.c:5094
0x9f42f5 gimplify_body(tree_node*, bool)
../../gcc/gimplify.c:13701
0x9f44e4 gimplify_function_tree(tree_node*)
../../gcc/gimplify.c:13791
0x86ac77 cgraph_node::analyze()
../../gcc/cgraphunit.c:667
0x86d803 analyze_functions
../../gcc/cgraphunit.c:1126
0x86e4e2 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2834
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Subject: [Bug fortran/71860] [7/8 Regression] [OOP] ICE on pointing to null(mold), verify_gimple failed
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Test cases committed, closing.
Thanks for the bug report!
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Removing the assert
gcc_assert (loop->dimen == 1);
> $ cat z3.f90
> program p
> real :: a(2,2)[*]
> data a /4*0.0/
> end
just hits a check later on:
d.f90:1:0:
1 | program p
|
interner Compiler-Fehler: in trans_array_constructor, bei
fortran/trans-array.c:2556
0x616351 trans_array_constructor
../../trunk/gcc/fortran/trans-array.c:2556
0x616351 gfc_add_loop_ss_code
../../trunk/gcc/fortran/trans-array.c:2869
So, the setup of the loop is wrong earlier.
>From gcc-bugs-return-633062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 20:43:06 2019
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
Date: Sat, 09 Feb 2019 20:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88711
--- Comment #8 from Jan Hubicka <hubicka at ucw dot cz> ---
> "I committed a patch that causes a regression in the Fortran
> testsuite. Clearly, the problem is with Fortran not my patch.
> I don't care about Fortran or respect those that work on the
> Fortran FE. Therefore, I just XFAIL the regressing test
> case and call it Good(tm)."
>
> Thanks.
>
> How about reverting your patch?
The patch fixes obvious bug. That bug made inliner heuristics lucky for
this particular testcase (which was introduced by me because I also do
care about Fortran perfomrance) but also it caused problems elsewhere (I
noticed it while analyzing 10% slowdown of Firefox HTML parser).
There is no way to make inline heuristics perfect for everyone (it would
not be called heuristics then). Sadly I do not see way to improve this
particular testcase without simply increasing inline limits (would
increase code size and make others unhappy), adding some logic telling
inliner that Fortran functions should be inlined more (which was
discussed before but was not considered coolest direction ofthe attack)
or teching inliner to recognize quite complex interaction between
individual functions inlined that is hard to do.
Bumping up --param inline-insns-auto limit helps this particular
testcase.
Honza
>From gcc-bugs-return-633063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 21:00:42 2019
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Subject: [Bug fortran/71703] [7/8/9 Regression] [OOP] ICE in wide_int_to_tree, at tree.c:1488
Date: Sat, 09 Feb 2019 21:00:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Part of the problem seems to be in gfc_conv_same_type_as, where
we have
if (UNLIMITED_POLY (b))
{
tmp = gfc_class_vptr_get (b->symtree->n.sym->backend_decl);
condb = fold_build2_loc (input_location, NE_EXPR, logical_type_node,
tmp, build_int_cst (TREE_TYPE (tmp), 0));
}
(same for a above).
This looks at the backend_decl only, without following the
reference in some way.
Here is what the backend_decl looks like:
(gdb) call debug_tree(b->symtree->n.sym->backend_decl)
<var_decl 0x7ffff7feec60 y
type <record_type 0x7ffff73625e8 t2 BLK
size <integer_cst 0x7ffff7195ed0 constant 256>
unit-size <integer_cst 0x7ffff7195fc0 constant 32>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff73625e8
fields <field_decl 0x7ffff7360a18 n type <integer_type 0x7ffff71aa5e8
integer(kind=4)>
SI a.f90:5:0
size <integer_cst 0x7ffff7195db0 constant 32>
unit-size <integer_cst 0x7ffff7195dc8 constant 4>
align:32 warn_if_not_align:0 offset_align 128
offset <integer_cst 0x7ffff7195ba0 constant 0>
bit-offset <integer_cst 0x7ffff7195be8 constant 0> context
<record_type 0x7ffff73625e8 t2> chain <field_decl 0x7ffff7360ab0 a>>
chain <type_decl 0x7ffff7360b48 D.3871>>
used static BLK a.f90:9:0 size <integer_cst 0x7ffff7195ed0 256> unit-size
<integer_cst 0x7ffff7195fc0 32>
align:64 warn_if_not_align:0 context <function_decl 0x7ffff735f700 p>
initial <constructor 0x7ffff7355bb8> chain <var_decl 0x7ffff7feebd0 x>>
not that I can really read what this is, or what it should be :-|
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Subject: [Bug rtl-optimization/89271] New: gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Sat, 09 Feb 2019 22:06:00 -0000
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Bug ID: 89271
Summary: gcc.target/powerpc/vsx-simode2.c stopped working in
GCC 9
Product: gcc
Version: unknown
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Priority: P3
Component: rtl-optimization
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In GCC 8 and earlier, this generates
mtvsrwz 32,3
#APP
# 10 "vsx-simode2.c" 1
xxlor 32,32,32 # v, v constraints
# 0 "" 2
#NO_APP
mfvsrwz 3,32
blr
but in GCC 9 it is
std 3,-16(1)
ori 2,2,0
lwz 9,-12(1)
mtvsrwz 32,9
#APP
# 10 "vsx-simode2.c" 1
xxlor 32,32,32 # v, v constraints
# 0 "" 2
#NO_APP
mfvsrwz 3,32
blr
and soon it will be
      std 3,-16(1)
      addi 9,1,-12
      lxsiwzx 32,0,9
blr
[ Hrm, no ori 2,2,0? And it is better to do li 9,-12 etc. ]
This is because IRA does
r125: preferred NO_REGS, alternative NO_REGS, allocno NO_REGS
a1(r125,l0) costs: BASE_REGS:14004,14004 GENERAL_REGS:14004,14004-
LINK_REGS:24010,24010 CTR_REGS:24010,24010 LINK_OR_CTR_REGS:24010,24010-
SPEC_OR_GEN_REGS:24010,24010 MEM:12000,12000
and it then chooses disposition mem for r125.
In GCC 8 and before combine already has decided to use GPR3 (the first
argument register) for this, so there was no RA here before.
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Subject: [Bug rtl-optimization/89271] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.0
Version|unknown |9.0
Target Milestone|--- |9.0
Known to fail| |9.0
>From gcc-bugs-return-633066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 23:18:23 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
Date: Sat, 09 Feb 2019 23:18:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
LangEnabledBy is used by optc-gen.awk to generate options.c with calls like
those below. Other than that, I don't think GCC has an internal data structure
to represent this relationship (one that could be queried to give a list of
other options that -Wimplicit controls). But I'm by no means an expert on
option processing.
case OPT_Wimplicit:
if (!opts_set->x_warn_implicit_function_declaration)
handle_generated_option (opts, opts_set,
OPT_Wimplicit_function_declaration, NULL,
value,
lang_mask, kind, loc, handlers, true, dc);
if (!opts_set->x_warn_implicit_int)
handle_generated_option (opts, opts_set,
OPT_Wimplicit_int, NULL, value,
lang_mask, kind, loc, handlers, true, dc);
break;
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89272] New: [9 Regression] r268728 caused FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble
Date: Sat, 09 Feb 2019 23:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89272
Bug ID: 89272
Summary: [9 Regression] r268728 caused FAIL: g++.dg/lto/pr65316
cp_lto_pr65316_0.o assemble
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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CC: marxin at gcc dot gnu.org
Target Milestone: ---
On x86-64, r268728 caused:
[hjl@gnu-skx-1 gcc-bisect]$
/export/project/git/gcc-bisect/master/268728/bld/gcc/testsuite/g++/../../xg++
-B/export/project/git/gcc-bisect/master/268728/bld/gcc/testsuite/g++/../../
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -nostdinc++
-I/export/project/git/gcc-bisect/master/268728/bld/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/export/project/git/gcc-bisect/master/268728/bld/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/export/project/git/gcc-bisect/gcc/libstdc++-v3/libsupc++
-I/export/project/git/gcc-bisect/gcc/libstdc++-v3/include/backward
-I/export/project/git/gcc-bisect/gcc/libstdc++-v3/testsuite/util
-fmessage-length=0 -flto -std=c++11 -g2 -fno-lto-odr-type-merging -O2
-Wno-return-type -c -o cp_lto_pr65316_0.o
/export/project/git/gcc-bisect/gcc/gcc/testsuite/g++.dg/lto/pr65316_0.C
during IPA pass: visibility
/export/project/git/gcc-bisect/gcc/gcc/testsuite/g++.dg/lto/pr65316_0.C:144:1:
internal compiler error: in type_in_anonymous_namespace_p, at ipa-utils.h:221
0xd84e2a type_in_anonymous_namespace_p(tree_node const*)
../../../../gcc/gcc/ipa-utils.h:221
0x1098cbe type_all_ctors_visible_p
../../../../gcc/gcc/ipa-devirt.c:254
0x1098ce8 type_possibly_instantiated_p
../../../../gcc/gcc/ipa-devirt.c:266
0x10a51a5 possible_polymorphic_call_targets(tree_node*, long,
ipa_polymorphic_call_context, bool*, void**, bool)
../../../../gcc/gcc/ipa-devirt.c:3344
0xd84b13 possible_polymorphic_call_targets(cgraph_edge*, bool*, void**, bool)
../../../../gcc/gcc/ipa-utils.h:118
0x10fbedc walk_polymorphic_call_targets
../../../../gcc/gcc/ipa.c:183
0x10fca44 symbol_table::remove_unreachable_nodes(_IO_FILE*)
../../../../gcc/gcc/ipa.c:427
0x12a9ac5 execute_todo
../../../../gcc/gcc/passes.c:2045
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[hjl@gnu-skx-1 gcc-bisect]$
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Subject: [Bug lto/89272] [9 Regression] r268728 caused FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble
Date: Sat, 09 Feb 2019 23:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89272
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-09
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89244] __builtin_is_constant_evaluated not documented
Date: Sun, 10 Feb 2019 00:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89244
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |ASSIGNED
Last reconfirmed| |2019-02-10
Resolution|INVALID |---
Ever confirmed|0 |1
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
As bug 88977 shows, people use the built-in directly; sooner or later, they
always do, whether or not the built-ins are intended to be. Before confirming
that bug I went looking for its documentation to make sure I wasn't missing
something and found none, so all I had to go on was the C++ proposal.
GCC documents the vast majority of built-ins, whether or not they are meant to
be used directly. There are countless examples, including the atomic
built-ins, __builtin_setjmp and _longjmp for nonlocal Gotos, or
__builtin_object_size. The manual even exhaustively lists all the C library
functions that it provides built-ins for, even though there is little reason to
do that. As Jonathan points out, the C++ Type Traits built-ins are documented
as well. The target sections of the manual exhaustively enumerate
target-specific intrinsics (regrettably, often without specifying their
semantics) even though there are higher-level APIs that users are expected to
use.
This is all immensely helpful, both to users and to GCC developers. Let me
take care of adding something for __builtin_is_constant_evaluated.
>From gcc-bugs-return-633070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 00:11:34 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Sun, 10 Feb 2019 00:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |88993
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
The patch I posted for the related pr88993 also relaxes this warning for printf
and fprintf: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00224.html
Like in the case of pr88993, the warning is by design and (in my view) makes
sense for sprintf but it's not very useful for the other functions where very
little code worries about exceeding these limits (or even cares about the
functions failing as they can for many other reasons).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88993
[Bug 88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc
limits
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libbacktrace/89273] New: Count inlined functions in skip parm for backtrace_full and backtrace_print
Date: Sun, 10 Feb 2019 04:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89273
Bug ID: 89273
Summary: Count inlined functions in skip parm for
backtrace_full and backtrace_print
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: libbacktrace
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
CC: ian at gcc dot gnu.org
Target Milestone: ---
[ Proposed here: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00579.html ]
The btest test-case modified like this:
...
diff --git a/libbacktrace/btest.c b/libbacktrace/btest.c
index b1c2a2a860d..0925882aed1 100644
--- a/libbacktrace/btest.c
+++ b/libbacktrace/btest.c
@@ -140,7 +140,7 @@ f13 (int f1line, int f2line)
data.failed = 0;
f3line = __LINE__ + 1;
- i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
+ i = backtrace_full (state, 1, callback_one, error_callback_one, &data);
if (i != 0)
{
@@ -148,9 +148,9 @@ f13 (int f1line, int f2line)
data.failed = 1;
}
- check ("test2", 0, all, f3line, "f13", "btest.c", &data.failed);
- check ("test2", 1, all, f2line, "f12", "btest.c", &data.failed);
- check ("test2", 2, all, f1line, "test2", "btest.c", &data.failed);
+ //check ("test2", 0, all, f3line, "f13", "btest.c", &data.failed);
+ check ("test2", 0, all, f2line, "f12", "btest.c", &data.failed);
+ check ("test2", 1, all, f1line, "test2", "btest.c", &data.failed);
printf ("%s: backtrace_full inline\n", data.failed ? "FAIL" : "PASS");
...
fails like this:
...
PASS: backtrace_full noinline
test2: [0]: got ../csu/libc-start.c expected btest.c
test2: [0]: got 308 expected 126
test2: [0]: got __libc_start_main expected f12
FAIL: backtrace_full inline
PASS: backtrace_simple noinline
PASS: backtrace_simple inline
PASS: backtrace_syminfo variable
...
This is expected behaviour: "SKIP is the number of frames to skip", so the
inline functions don't count.
But arguably, it would be more intuitive if the skip parameter matched the
reduction in number of callbacks in backtrace_full.
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P3
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Sun, 10 Feb 2019 09:05:00 -0000
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Slightly different variant of z3.f90, with a different ICE:
program p
real :: a(2,2)[*]
data a /1.0, 2.0, 3.0, 4.0/
end
Interner Compiler-Fehler: Speicherzugriffsfehler
0xe24dff crash_signal
../../trunk/gcc/toplev.c:326
0x986688 gfc_get_nodesc_array_type(tree_node*, gfc_array_spec*, gfc_packed,
bool)
../../trunk/gcc/fortran/trans-types.c:1617
0x90822b gfc_build_constant_array_constructor(gfc_expr*, tree_node*)
../../trunk/gcc/fortran/trans-array.c:2267
0x945fd4 gfc_trans_array_constructor_copy
../../trunk/gcc/fortran/trans-expr.c:9913
0x945fd4 gfc_trans_assignment(gfc_expr*, gfc_expr*, bool, bool, bool, bool)
../../trunk/gcc/fortran/trans-expr.c:10891
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Subject: [Bug d/88989] ICE in resolvePropertiesX, at d/dmd/expression.c:251
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Fix committed in r268740.
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=268740
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
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Pharos Team <rtos.pharos at outlook dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #2 from Pharos Team <rtos.pharos at outlook dot com> ---
I'm sorry but your comment is invalid. The following lines:
800013b4: 00bff797 auipc a5,0xbff
800013b8: 04c78793 addi a5,a5,76 #80c00400
<partition1BssEnd>
800013bc: 639c ld a5,0(a5)
load to a5 the address of partition1BssEnd and then they "read" the location of
partition1BssEnd. Even though there is no "write", the "read" operation is
triggering the MMU to raise an error (as it should).
For example, compiling the same C code for ARM AARCH64 we get the result:
1448: a9be7bfd stp x29, x30, [sp, #-32]!
144c: 910003fd mov x29, sp
PharosHwQueueSendR sendResult;
//uint8_t message4[10];
uint8_t message[] = {
1450: 128004a0 mov w0, #0xffffffda // #-38
1454: 390043e0 strb w0, [sp, #16]
1458: 528009e0 mov w0, #0x4f // #79
145c: 390047e0 strb w0, [sp, #17]
1460: 128007a0 mov w0, #0xffffffc2 // #-62
1464: 39004be0 strb w0, [sp, #18]
1468: 52800080 mov w0, #0x4 // #4
146c: 39004fe0 strb w0, [sp, #19]
1470: 528000a0 mov w0, #0x5 // #5
1474: 390053e0 strb w0, [sp, #20]
1478: 528000c0 mov w0, #0x6 // #6
147c: 390057e0 strb w0, [sp, #21]
1480: 528000e0 mov w0, #0x7 // #7
1484: 39005be0 strb w0, [sp, #22]
1488: 52800100 mov w0, #0x8 // #8
148c: 39005fe0 strb w0, [sp, #23]
That is, everything is placed (correctly) on the stack. I just place the
aarch64 example so that we can make sure that the C code is not making any
reference at all to partition1BssEnd (I have no idea why on RISC-V it would
make such a reference).
With this "read" problem I took the liberty to reopen the bug. I truly believe
this is a bug and not invalid.
Best regards,
Pharos team
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Sun, 10 Feb 2019 10:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #11)
> Slightly different variant of z3.f90, with a different ICE:
>
> program p
> real :: a(2,2)[*]
> data a /1.0, 2.0, 3.0, 4.0/
> end
>
> Interner Compiler-Fehler: Speicherzugriffsfehler
> 0xe24dff crash_signal
> ../../trunk/gcc/toplev.c:326
> 0x986688 gfc_get_nodesc_array_type(tree_node*, gfc_array_spec*, gfc_packed,
> bool)
> ../../trunk/gcc/fortran/trans-types.c:1617
> 0x90822b gfc_build_constant_array_constructor(gfc_expr*, tree_node*)
> ../../trunk/gcc/fortran/trans-array.c:2267
> 0x945fd4 gfc_trans_array_constructor_copy
> ../../trunk/gcc/fortran/trans-expr.c:9913
> 0x945fd4 gfc_trans_assignment(gfc_expr*, gfc_expr*, bool, bool, bool, bool)
> ../../trunk/gcc/fortran/trans-expr.c:10891
This particular case can be fixes (well, sort of) with
Index: trans-decl.c
===================================================================
--- trans-decl.c (Revision 268432)
+++ trans-decl.c (Arbeitskopie)
@@ -5399,6 +5399,12 @@
/* Handle "static" initializer. */
if (sym->value)
{
+ /* An EXPR_ARRAY with a rank > 1 here has to come from a DATA
+ statement. Set its rank here as not to confuse the following
+ steps. See PR 71066. */
+ if (sym->value->expr_type == EXPR_ARRAY)
+ sym->value->rank = 1;
+
sym->attr.pointer = 1;
tmp = gfc_trans_assignment (gfc_lval_expr_from_sym (sym), sym->value,
true, false);
but z3.f90 still ICEs.
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
If the address 80c00400 is not readable, then the linker has generated an
invalid binary.
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Subject: [Bug lto/89272] [9 Regression] r268728 caused FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble
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--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sun Feb 10 10:46:43 2019
New Revision: 268742
URL: https://gcc.gnu.org/viewcvs?rev=268742&root=gcc&view=rev
Log:
PR lto/89272
* tree.c (fld_simplified_type_name): Also keep TYPE_DECL for
polymorphic types.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug lto/89272] [9 Regression] r268728 caused FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |hubicka at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
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--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I have posted patch which removes the problematic TYPE_NEEDS_CONSTRUCTION to
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00584.html
It however does not fix the difference. I suppose it may be TBAA diverging
somehow?
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Subject: [Bug tree-optimization/89268] [9 Regression] r268689 caused FAIL: gcc.dg/vect/pr79887.c
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Feb 10 11:06:58 2019
New Revision: 268743
URL: https://gcc.gnu.org/viewcvs?rev=268743&root=gcc&view=rev
Log:
PR tree-optimization/89268
* tree-if-conv.c (version_loop_for_if_conversion): Push to preds only
if preds is non-NULL.
* gcc.dg/vect/pr89268.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr89268.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-if-conv.c
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Subject: [Bug tree-optimization/89268] [9 Regression] r268689 caused FAIL: gcc.dg/vect/pr79887.c
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libfortran/89274] New: Inconsistent list directed output of INTEGER(16)
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Bug ID: 89274
Summary: Inconsistent list directed output of INTEGER(16)
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Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: jvdelisle at gcc dot gnu.org
Target Milestone: ---
The following test
integer(8) :: i(2)
integer(16) :: j(2)
i = -huge(1)
print *, i
i = -huge(1_8)
print *, i
j = huge(1)
print *, j
j = huge(1_8)
print *, j
j = huge(1_16)
print *, j
j = -huge(1)
print *, j
j = -huge(1_8)
print *, j
j = -huge(1_16)
print *, j
end
gives at run time
-2147483647 -2147483647
-9223372036854775807 -9223372036854775807
2147483647 2147483647
9223372036854775807 9223372036854775807
170141183460469231731687303715884105727
170141183460469231731687303715884105727
-2147483647 -2147483647
-9223372036854775807 -9223372036854775807
-170141183460469231731687303715884105727
-170141183460469231731687303715884105727
since at least 4.8 up to trunk (9.0).
After applying the following patch
--- ../_clean/libgfortran/io/write.c 2019-01-01 13:40:19.000000000 +0100
+++ libgfortran/io/write.c 2019-02-10 11:03:35.000000000 +0100
@@ -1342,6 +1342,10 @@ write_integer (st_parameter_dt *dtp, con
width = 20;
break;
+ case 16:
+ width = 40;
+ break;
+
default:
width = 0;
break;
one gets
-2147483647 -2147483647
-9223372036854775807 -9223372036854775807
2147483647
2147483647
9223372036854775807
9223372036854775807
170141183460469231731687303715884105727
170141183460469231731687303715884105727
-2147483647
-2147483647
-9223372036854775807
-9223372036854775807
-170141183460469231731687303715884105727
-170141183460469231731687303715884105727
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Subject: [Bug libfortran/89274] Inconsistent list directed output of INTEGER(16)
Date: Sun, 10 Feb 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89274
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-10
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Severity|normal |minor
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/88585] [9 Regression] ICE in fld_incomplete_type_of, at tree.c:5295
Date: Sun, 10 Feb 2019 11:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88585
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
OK, I think this is frontend issue because at least in my understanding there
should be only one canonical type for the structure, while here we have two.
One canonical type is result of:
#0 0x00007ffff765f728 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00000000015925d3 in copy_node (node=0x7ffff7211690) at
../../gcc/tree.c:1183
#2 0x00000000015a8059 in build_distinct_type_copy (type=0x7ffff7211690) at
../../gcc/tree.c:6514
#3 0x00000000015a81d2 in build_variant_type_copy (type=0x7ffff7211690) at
../../gcc/tree.c:6548
#4 0x00000000015a7bc0 in build_qualified_type (type=0x7ffff7211690,
type_quals=8) at ../../gcc/tree.c:6449
#5 0x00000000009107f4 in c_build_qualified_type (type=0x7ffff7211690,
type_quals=8, orig_qual_type=0x0, orig_qual_indirect=0) at
../../gcc/c/c-typeck.c:14941
#6 0x00000000008b2c70 in grokdeclarator (declarator=0x3188250,
declspecs=0x31880c0, decl_context=PARM, initialized=false, width=0x0,
decl_attrs=0x7fffffffe348, expr=0x7fffffffe368,
expr_const_operands=0x7fffffffe17f, deprecated_state=DEPRECATED_NORMAL) at
../../gcc/c/c-decl.c:6663
#7 0x00000000008af3fd in push_parm_decl (parm=0x3188280, expr=0x7fffffffe368)
at ../../gcc/c/c-decl.c:5439
#8 0x0000000000922343 in c_parser_parms_list_declarator
(parser=0x7ffff70f4b40, attrs=0x0, expr=0x0) at ../../gcc/c/c-parser.c:4011
#9 0x00000000009221e6 in c_parser_parms_declarator (parser=0x7ffff70f4b40,
id_list_ok=true, attrs=0x0) at ../../gcc/c/c-parser.c:3942
#10 0x0000000000921f55 in c_parser_direct_declarator_inner
(parser=0x7ffff70f4b40, id_present=true, inner=0x3188090) at
../../gcc/c/c-parser.c:3870
#11 0x0000000000921962 in c_parser_direct_declarator (parser=0x7ffff70f4b40,
type_seen_p=true, kind=C_DTR_NORMAL, seen_id=0x7fffffffe67f) at
../../gcc/c/c-parser.c:3711
#12 0x000000000092187a in c_parser_declarator (parser=0x7ffff70f4b40,
type_seen_p=true, kind=C_DTR_NORMAL, seen_id=0x7fffffffe67f) at
../../gcc/c/c-parser.c:3655
#13 0x000000000091dc43 in c_parser_declaration_or_fndef (parser=0x7ffff70f4b40,
fndef_ok=true, static_assert_ok=true, empty_ok=true, nested=false,
start_attr_ok=true,
objc_foreach_object_declaration=0x0, omp_declare_simd_clauses=...,
oacc_routine_data=0x0, fallthru_attr_p=0x0) at ../../gcc/c/c-parser.c:2001
#14 0x000000000091d2bc in c_parser_external_declaration (parser=0x7ffff70f4b40)
at ../../gcc/c/c-parser.c:1654
#15 0x000000000091ce15 in c_parser_translation_unit (parser=0x7ffff70f4b40) at
../../gcc/c/c-parser.c:1534
#16 0x0000000000954eae in c_parse_file () at ../../gcc/c/c-parser.c:19842
#17 0x00000000009d4288 in c_common_parse_file () at
../../gcc/c-family/c-opts.c:1155
#18 0x0000000001197690 in compile_file () at ../../gcc/toplev.c:456
#19 0x000000000119a1c2 in do_compile () at ../../gcc/toplev.c:2176
#20 0x000000000119a4ae in toplev::main (this=0x7fffffffe9fe, argc=5,
argv=0x7fffffffeaf8) at ../../gcc/toplev.c:2311
#21 0x00000000020690ad in main (argc=5, argv=0x7fffffffeaf8) at
../../gcc/main.c:39
While the second is
#0 0x00007ffff765f79c in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00000000015925d3 in copy_node (node=0x7ffff7211690) at
../../gcc/tree.c:1183
#2 0x00000000015a8059 in build_distinct_type_copy (type=0x7ffff7211690) at
../../gcc/tree.c:6514
#3 0x00000000015a81d2 in build_variant_type_copy (type=0x7ffff7211690) at
../../gcc/tree.c:6548
#4 0x00000000015a7bc0 in build_qualified_type (type=0x7ffff7211690,
type_quals=8) at ../../gcc/tree.c:6449
#5 0x00000000009107f4 in c_build_qualified_type (type=0x7ffff7211690,
type_quals=8, orig_qual_type=0x0, orig_qual_indirect=0) at
../../gcc/c/c-typeck.c:14941
#6 0x00000000008b2c70 in grokdeclarator (declarator=0x3188250,
declspecs=0x31880c0, decl_context=PARM, initialized=false, width=0x0,
decl_attrs=0x7fffffffe348, expr=0x7fffffffe368,
expr_const_operands=0x7fffffffe17f, deprecated_state=DEPRECATED_NORMAL) at
../../gcc/c/c-decl.c:6663
#7 0x00000000008af3fd in push_parm_decl (parm=0x3188280, expr=0x7fffffffe368)
at ../../gcc/c/c-decl.c:5439
#8 0x0000000000922343 in c_parser_parms_list_declarator
(parser=0x7ffff70f4b40, attrs=0x0, expr=0x0) at ../../gcc/c/c-parser.c:4011
#9 0x00000000009221e6 in c_parser_parms_declarator (parser=0x7ffff70f4b40,
id_list_ok=true, attrs=0x0) at ../../gcc/c/c-parser.c:3942
#10 0x0000000000921f55 in c_parser_direct_declarator_inner
(parser=0x7ffff70f4b40, id_present=true, inner=0x3188090) at
../../gcc/c/c-parser.c:3870
#11 0x0000000000921962 in c_parser_direct_declarator (parser=0x7ffff70f4b40,
type_seen_p=true, kind=C_DTR_NORMAL, seen_id=0x7fffffffe67f) at
../../gcc/c/c-parser.c:3711
#12 0x000000000092187a in c_parser_declarator (parser=0x7ffff70f4b40,
type_seen_p=true, kind=C_DTR_NORMAL, seen_id=0x7fffffffe67f) at
../../gcc/c/c-parser.c:3655
#13 0x000000000091dc43 in c_parser_declaration_or_fndef (parser=0x7ffff70f4b40,
fndef_ok=true, static_assert_ok=true, empty_ok=true, nested=false,
start_attr_ok=true,
objc_foreach_object_declaration=0x0, omp_declare_simd_clauses=...,
oacc_routine_data=0x0, fallthru_attr_p=0x0) at ../../gcc/c/c-parser.c:2001
#14 0x000000000091d2bc in c_parser_external_declaration (parser=0x7ffff70f4b40)
at ../../gcc/c/c-parser.c:1654
#15 0x000000000091ce15 in c_parser_translation_unit (parser=0x7ffff70f4b40) at
../../gcc/c/c-parser.c:1534
#16 0x0000000000954eae in c_parse_file () at ../../gcc/c/c-parser.c:19842
#17 0x00000000009d4288 in c_common_parse_file () at
../../gcc/c-family/c-opts.c:1155
#18 0x0000000001197690 in compile_file () at ../../gcc/toplev.c:456
#19 0x000000000119a1c2 in do_compile () at ../../gcc/toplev.c:2176
#20 0x000000000119a4ae in toplev::main (this=0x7fffffffe9fe, argc=5,
argv=0x7fffffffeaf8) at ../../gcc/toplev.c:2311
#21 0x00000000020690ad in main (argc=5, argv=0x7fffffffeaf8) at
../../gcc/main.c:39
The reason is that build_variant_type_copy adjust alignment of atomic types and
thus
the variant lookup never succeeds.
I am testing
Index: tree.c
===================================================================
--- tree.c (revision 268742)
+++ tree.c (working copy)
@@ -6329,18 +6329,33 @@ check_lang_type (const_tree cand, const_
return lang_hooks.types.type_hash_eq (cand, base);
}
+static tree find_atomic_core_type (const_tree type);
+
/* Returns true iff unqualified CAND and BASE are equivalent. */
bool
check_base_type (const_tree cand, const_tree base)
{
- return (TYPE_NAME (cand) == TYPE_NAME (base)
- /* Apparently this is needed for Objective-C. */
- && TYPE_CONTEXT (cand) == TYPE_CONTEXT (base)
- /* Check alignment. */
- && TYPE_ALIGN (cand) == TYPE_ALIGN (base)
- && attribute_list_equal (TYPE_ATTRIBUTES (cand),
- TYPE_ATTRIBUTES (base)));
+ if (TYPE_NAME (cand) != TYPE_NAME (base)
+ /* Apparently this is needed for Objective-C. */
+ || TYPE_CONTEXT (cand) != TYPE_CONTEXT (base)
+ || !attribute_list_equal (TYPE_ATTRIBUTES (cand),
+ TYPE_ATTRIBUTES (base)))
+ return false;
+ /* Check alignment. */
+ if (TYPE_ALIGN (cand) == TYPE_ALIGN (base))
+ return true;
+ /* Atomic types increase minimal alignment. We must to do so as well
+ or we get duplicated canonical types. See PR88686. */
+ if ((TYPE_QUALS (cand) & TYPE_QUAL_ATOMIC))
+ {
+ /* See if this object can map to a basic atomic type. */
+ tree atomic_type = find_atomic_core_type (cand);
+ if (TYPE_ALIGN (atomic_type) == TYPE_ALIGN (cand)
+ && TYPE_ALIGN (base) < TYPE_ALIGN (cand))
+ return true;
+ }
+ return false;
}
/* Returns true iff CAND is equivalent to BASE with TYPE_QUALS. */
@@ -6373,7 +6388,7 @@ check_aligned_type (const_tree cand, con
atomic types, and returns that core atomic type. */
static tree
-find_atomic_core_type (tree type)
+find_atomic_core_type (const_tree type)
{
tree base_atomic_type;
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88677
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|hubicka at gcc dot gnu.org |rguenther at suse dot de
--- Comment #13 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
So even with the patch for TYPE_NEEDS_CONSTRUCTING I get the following
difference in fre1 dump (and it is first one). I also use -fno-strict-aliasing
--- test.ii.033t.fre1 2019-02-10 13:27:45.531305878 +0100
+++ dd/test.ii.033t.fre1 2019-02-10 13:27:34.895310810 +0100
@@ -120,7 +120,7 @@
n::p (struct n * const this)
{
int SR.3;
- struct D D.2531;
+ struct D D.2527;
struct D D.2507;
unsigned int _1;
@@ -221,9 +221,9 @@
marking outgoing edge 6 -> 8 executable
Processing block 5: BB8
Value numbering stmt = SR.9_27 = MEM[(struct D *)&m];
-Setting value number of SR.9_27 to SR.8_23 (changed)
+Setting value number of SR.9_27 to SR.9_27 (changed)
marking outgoing edge 8 -> 9 executable
-Making available beyond BB8 SR.9_27 for value SR.8_23
+Making available beyond BB8 SR.9_27 for value SR.9_27
Processing block 6: BB7
Value numbering stmt = SR.9_26 = 0;
RHS 0 simplified to 0
@@ -233,12 +233,11 @@
Value numbering stmt = .MEM_14 = PHI <.MEM_6(7), .MEM_6(8)>
Setting value number of .MEM_14 to .MEM_6 (changed)
Value numbering stmt = SR.9_12 = PHI <SR.9_26(7), SR.9_27(8)>
-Marking CSEd to PHI node SR.8_11 = PHI <SR.8_2(3), SR.8_23(4)>
-Setting value number of SR.9_12 to SR.8_11 (changed)
-SR.8_11 is available for SR.8_11
+Setting value number of SR.9_12 to SR.9_12 (changed)
+Making available beyond BB9 SR.9_12 for value SR.9_12
Value numbering stmt = MEM[(struct D *)&D.2498] = SR.9_12;
No store match
-Value numbering store MEM[(struct D *)&D.2498] to SR.8_11
+Value numbering store MEM[(struct D *)&D.2498] to SR.9_12
Setting value number of .MEM_18 to .MEM_18 (changed)
Value numbering stmt = return;
marking outgoing edge 9 -> 1 executable
@@ -252,9 +251,7 @@
Value numbering stmt = <L1>:
Value numbering stmt = resx 1
RPO iteration over 10 blocks visited 10 blocks in total discovering 10
executable blocks iterating 1.0 times, a block was visited max. 1 times
-RPO tracked 2 values available at 3 locations and 17 lattice elements
-Replaced redundant PHI node defining SR.9_12 with SR.8_11
-Removing dead stmt SR.9_12 = PHI <0(7), SR.9_27(8)>
+RPO tracked 4 values available at 4 locations and 17 lattice elements
Removing dead stmt SR.9_26 = 0;
Removing dead stmt _10 = a_7(D);
Removing dead stmt SR.7_24 = SR.8_11;
@@ -281,9 +278,9 @@
int SR.8;
int SR.7;
unsigned int a;
- struct D D.2547;
- struct D D.2545;
- struct D D.2544;
+ struct D D.2543;
+ struct D D.2541;
+ struct D D.2540;
struct n a;
struct D D.2498;
struct D D.2497;
@@ -313,7 +310,8 @@
SR.9_27 = MEM[(struct D *)&m];
<bb 7> :
- MEM[(struct D *)&D.2498] = SR.8_11;
+ # SR.9_12 = PHI <0(5), SR.9_27(6)>
+ MEM[(struct D *)&D.2498] = SR.9_12;
return;
<bb 8> :
Richi, do you have any idea what happens here? If needed I can analyze it
more...
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com,
| |ian at gcc dot gnu.org,
| |vries at gcc dot gnu.org
Component|libfortran |libbacktrace
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
AFAIU, this libbacktrace assert corresponds to the runtime error mentioned in
comment 0:
...
diff --git a/libbacktrace/dwarf.c b/libbacktrace/dwarf.c
index d7dacf3ef32..b99771a2989 100644
--- a/libbacktrace/dwarf.c
+++ b/libbacktrace/dwarf.c
@@ -36,6 +36,7 @@ POSSIBILITY OF SUCH DAMAGE. */
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
+#include <assert.h>
#include "dwarf2.h"
#include "filenames.h"
@@ -2821,6 +2822,7 @@ dwarf_lookup_pc (struct backtrace_state *state, struct
dwarf_data *ddata,
*found = 1;
/* Find an address range that includes PC. */
+ assert (ddata->addrs != NULL);
entry = bsearch (&pc, ddata->addrs, ddata->addrs_count,
sizeof (struct unit_addrs), unit_addrs_search);
...
I can trigger the assert with btest_dwz, for the btest_common.debug file, which
doesn't contain any addresses.
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Subject: [Bug tree-optimization/86020] [8 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
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--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sun Feb 10 12:55:24 2019
New Revision: 268745
URL: https://gcc.gnu.org/viewcvs?rev=268745&root=gcc&view=rev
Log:
Backport from mainline:
2019-01-05 Jan Hubicka <hubicka@ucw.cz>
PR tree-opt/86020
Revert:
2017-05-22 Jan Hubicka <hubicka@ucw.cz>
* ipa-inline.c (edge_badness): Use inlined_time instead of
inline_summaries->get.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/ipa-inline.c
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Subject: [Bug tree-optimization/86020] [8 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89011] member function pointer template argument with initialization by constant generates ICE
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--- Comment #3 from Andreas Hangauer <ahangauer at gmx dot net> ---
Unfortunately this is the most recent version of gcc which is available in the
mingw-w64 / msys2 toolchain. I am only able to try with an *older* gcc: However
version 5.1.0 yields the same. Sorry if this is not of much help, but it
indicates that indeed this could be a target-related problem.
gcc -c test_bug.cpp -std=c++11
==>
test_bug.cpp:14:26: internal compiler error: in instantiate_type, at
cp/class.c:
7849
using TT3 = test<dummy, 0>; // generates ICE
^
Please submit a full bug report,
gcc -v
==>
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=C:/TDM-GCC-64/bin/../libexec/gcc/x86_64-w64-mingw32/5.1.0/lt
o-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-5.1.0/configure --build=x86_64-w64-mingw32
--e
nable-targets=all --enable-languages=ada,c,c++,fortran,lto,objc,obj-c++
--enable
-libgomp --enable-lto --enable-graphite --enable-cxx-flags=-DWINPTHREAD_STATIC
-
-disable-build-with-cxx --disable-build-poststage1-with-cxx
--enable-libstdcxx-d
ebug --enable-threads=posix --enable-version-specific-runtime-libs
--enable-full
y-dynamic-string --enable-libstdcxx-threads --enable-libstdcxx-time
--with-gnu-l
d --disable-werror --disable-nls --disable-win32-registry --prefix=/mingw64tdm
-
-with-local-prefix=/mingw64tdm --with-pkgversion=tdm64-1
--with-bugurl=http://td
m-gcc.tdragon.net/bugs
Thread model: posix
gcc version 5.1.0 (tdm64-1)
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
Date: Sun, 10 Feb 2019 13:15:00 -0000
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Pharos Team <rtos.pharos at outlook dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #4 from Pharos Team <rtos.pharos at outlook dot com> ---
I continue not to understand your point.
Correct me if I'm wrong, it is GCC that generates the assembly instructions to
read from partition1BssEnd, where it shouldn't.
How can this be a linker problem?
Just to make clear, the address 80c00400 belongs is inside the linker script.
It is the MMU that is initialized to state that address as invalid (and it is
correctly initialized as invalid since this address belongs to another
partition).
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
GCC generates a copy from a read-only data object to a stack object allocated
for the local variable. If the linker puts that read-only data at a place that
isn't readable then it is a bug in the linker, or the linker script, or the
binary loader. Nothing of that is related to GCC.
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Blocks| |79966
Resolution|--- |FIXED
--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I see, original PR is still open. There is no need to track this twice.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79966
[Bug 79966] [9 Regression] run time more than twice slower when using
-fipa-cp-clone
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Subject: [Bug ipa/79966] [9 Regression] run time more than twice slower when using -fipa-cp-clone
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Bug 79966 depends on bug 88711, which changed state.
Bug 88711 Summary: [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88711
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/67696] libbacktrace prints C++ demangled name for Fortran symbol
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ccoutant at gmail dot com,
| |ian at airs dot com,
| |jason at gcc dot gnu.org,
| |pault at gcc dot gnu.org,
| |vries at gcc dot gnu.org
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
The fact that the error showed up both with libbacktrace and gdb suggest that
the debug information is wrong.
It would have been good to see the DW_TAG_subprogram DIE for foo (using readelf
-w), with the DW_AT_name and DW_AT_linkage_name attributes. This could have
confirmed that the generated debug info was incorrect.
Either way, with trunk I see:
...
<2><126>: Abbrev Number: 5 (DW_TAG_subprogram)
<127> DW_AT_external : 1
<127> DW_AT_name : (indirect string, offset: 0x31a): cp__b
<12b> DW_AT_decl_file : 1
<12c> DW_AT_decl_line : 3
<12d> DW_AT_linkage_name: (indirect string, offset: 0x310):
__foo_MOD_cp__b
<131> DW_AT_low_pc : 0x400632
<139> DW_AT_high_pc : 0xe
<141> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<143> DW_AT_GNU_all_tail_call_sites: 1
...
and:
...
Program aborted. Backtrace:
#0 0x40063f in __foo_MOD_cp__b
at /data/gcc_versions/devel/test2.f90:4
#1 0x400648 in test
at /data/gcc_versions/devel/test2.f90:10
#2 0x40067f in main
at /data/gcc_versions/devel/test2.f90:9
...
So, libbacktrace prints the DW_AT_linkage_name, as is the documented behaviour.
Both the DW_AT_name and DW_AT_linkage name do not contain the 'cp(bool)'
reported in comment 0.
Propose to mark this resolved-fixed.
>From gcc-bugs-return-633096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 13:58:33 2019
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Subject: [Bug tree-optimization/86020] [8 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
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--- Comment #13 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks, Honza!
>From gcc-bugs-return-633097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 14:11:00 2019
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
Date: Sun, 10 Feb 2019 14:10:00 -0000
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Pharos Team <rtos.pharos at outlook dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |FIXED
--- Comment #6 from Pharos Team <rtos.pharos at outlook dot com> ---
OK,
I think I got it know. I've tried more things and indeed this seems now to be a
linker problem.
I tried to increase the message length (2 more bytes):
void aperiodicThread0_0()
{
PharosHwQueueSendR sendResult;
uint8_t message[] = {
0xda , 0x4f , 0xc2 , 4 , 5 , 6 , 7 , 8 , 9 , 10
};
.
.
.
}
and now the generated assembly is:
800013b8: 1101 addi sp,sp,-32
800013ba: ec06 sd ra,24(sp)
800013bc: e822 sd s0,16(sp)
800013be: 1000 addi s0,sp,32
800013c0: 00011797 auipc a5,0x11
800013c4: 1c878793 addi a5,a5,456 # 80012588
<pharosRodataStart+0x158>
800013c8: 6398 ld a4,0(a5)
800013ca: fee43023 sd a4,-32(s0)
800013ce: 0087d783 lhu a5,8(a5)
800013d2: fef41423 sh a5,-24(s0)
as opposed to initially which was:
800013b8: 1101 addi sp,sp,-32
800013ba: ec06 sd ra,24(sp)
800013bc: e822 sd s0,16(sp)
800013be: 1000 addi s0,sp,32
800013c0: 00bff797 auipc a5,0xbff
800013c4: 04078793 addi a5,a5,64 # 80c00400
<partition1BssEnd>
800013c8: 639c ld a5,0(a5)
800013ca: fef43023 sd a5,-32(s0)
800013ce: 00011597 auipc a1,0x11
800013d2: 11258593 addi a1,a1,274 # 800124e0
<pharosRodataStart+0xc0>
800013d6: 4501 li a0,0
I assuming now that the linker found some 8 bytes free near the
partition1BssEnd, instead of placing the data in the rodata section. By the
way, the linker script for the text section is:
.text :
{
CREATE_OBJECT_SYMBOLS
/* source code is in text section */
pharosStartText = .;
*(.textStart)
*(.textStart.*)
. = ALIGN (0x4);
*(.text)
*(.text.*)
/* read-only data is placed in text */
. = ALIGN (0x10);
pharosRodataStart = . ;
*(.rodata)
*(.rodata.*)
*(.note.gnu.build-id)
pharosRodataEnd = .;
/* variable to check the end of the text section */
. = ALIGN (0x10);
_endtext = .;
pharosEndText = .;
} > sdram
and near the partition1BssEnd is:
/* data of partition */
.partition1 :
{
CREATE_OBJECT_SYMBOLS
/* address of the partition 1 data section start in RAM */
partition1DataStart = .;
. = ALIGN(PARTITION_ALIGNMENT);
. = ALIGN(8);
partition1Start = .;
*(.partition1)
*(.partition1.*)
/* address of the partition 1 data section end in RAM */
. = ALIGN(8);
partition1DataEnd = .;
} > sdram AT > sdram = 0xff
/* bss of partition 1*/
.partition1Bss (NOLOAD) :
{
CREATE_OBJECT_SYMBOLS
/* address of the partition 1 bss section start in RAM */
. = ALIGN(8);
partition1BssStart = .;
*(.partition1Bss)
*(.partition1Bss.*)
/* address of the shared partition 1 section end in RAM */
. = ALIGN(8);
partition1BssEnd = .;
/* place here the partition data that is NOT to be initialized at all */
partition1UssStart = .;
*(.partition1Uss)
*(.partition1Uss.*)
partition1UssEnd = .;
partition1End = .;
} > sdram
This is indeed one of those bugs that happens one in a million!
So in short, from my part, you can close this bug (I noticed that last time you
marked it as "fixed", maybe a mistake as you mark it correctly as "invalid" the
other times). I'll continue to investigate if this is a binutils issue or if
something has to be done on my side (linker script?)
Thank you and have a good weekend (rest of it).
Pharos team
>From gcc-bugs-return-633098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 14:30:45 2019
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Subject: [Bug d/88654] Hangs in libphobos testsuite
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--- Comment #7 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Jakub Jelinek from comment #0)
>
> 2) if Curl fails to initialize, the test shouldn't get stuck
>
This part has been done in r268746.
>From gcc-bugs-return-633099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 14:43:53 2019
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Subject: [Bug d/89254] std.net.curl and std.parallelism unittests hang
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--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
I don't think you should be seeing a thread deadlock in std.net.curl after
r268746.
I've not been able to reproduce the never timing out part. The process has
always been killed after 600 seconds.
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Subject: [Bug middle-end/89269] RISC-V stack variable as global variable
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |INVALID
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
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--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
I'll use this PR as a reference to adding a compiler switch for building
modules in a "unittest runner" mode. This to allow making it possible to build
all modules using dg-runtest without getting linker errors (as the modules
themselves exist in libphobos).
Currently, all modules are compiled with all unittests bundled into a
libgphobos_t.{so,a} test library before dejagnu kicks in. The unittest runner
is just a thin wrapper around executing `./unittest` and then executing it
again in a loop, passing as an argument every module printed to stdout.
>From gcc-bugs-return-633102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 14:54:11 2019
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--- Comment #7 from Pharos Team <rtos.pharos at outlook dot com> ---
Just an additional note to anyone who might have the same problem, I solved it
with:
/******************************************************************/
/* Start of text and read-only data area */
/******************************************************************/
.text :
{
CREATE_OBJECT_SYMBOLS
/* source code is in text section */
pharosStartText = .;
KEEP(*(.textStart))
KEEP(*(.textStart.*))
. = ALIGN (0x4);
*(.text)
*(.text.*)
/* read-only data is placed in text */
. = ALIGN (0x10);
pharosRodataStart = . ;
*(.srodata)
*(.srodata.*)
*(.rodata)
*(.rodata.*)
*(.note.gnu.build-id)
*(.note.gnu.build-id.*)
pharosRodataEnd = .;
/* variable to check the end of the text section */
. = ALIGN (0x10);
_endtext = .;
pharosEndText = .;
} > sdram
That is, placing *(.srodata) solved it (the constant variable was being placed
at .srodata instead of .rodata)
Regards,
Pharos team
>From gcc-bugs-return-633103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:20:40 2019
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Subject: [Bug rtl-optimization/89275] New: [9 Regression] Slowdown in mcperf on POEWR
Date: Sun, 10 Feb 2019 15:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89275
Bug ID: 89275
Summary: [9 Regression] Slowdown in mcperf on POEWR
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: tkoenig at gcc dot gnu.org
Target Milestone: ---
See
https://www.phoronix.com/scan.php?page=article&item=power9-gcc-clang&num=4
there appears to be a ~ 20% slowdown for gcc9 vs. gcc8 on the memcached mcperf
benchmark.
>From gcc-bugs-return-633104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:21:25 2019
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Subject: [Bug rtl-optimization/89275] [9 Regression] Slowdown in mcperf on POEWR
Date: Sun, 10 Feb 2019 15:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89275
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc64le
Blocks| |79074
Target Milestone|--- |9.0
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79074
[Bug 79074] -Waddress difference between C and C++ with (T*)0
>From gcc-bugs-return-633105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:38:54 2019
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 10 15:38:19 2019
New Revision: 268747
URL: https://gcc.gnu.org/viewcvs?rev=268747&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
* gfortran.dg/warn_undefined_1.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/warn_undefined_1.f90
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:53:15 2019
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Subject: [Bug tree-optimization/71237] [7 regression] scev tests failing after pass reorganization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71237
--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 10 15:52:38 2019
New Revision: 268748
URL: https://gcc.gnu.org/viewcvs?rev=268748&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
* expr.c (gfc_check_assign): Add argument is_init_expr. If we are
looking at an init expression, issue error if the target is not a
TARGET and we are not looking at a procedure pointer.
* gfortran.h (gfc_check_assign): Add optional argument
is_init_expr.
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
* gfortran.dg/pointer_init_2.f90: Adjust error messages.
* gfortran.dg/pointer_init_6.f90: Likewise.
* gfortran.dg/pointer_init_9.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pointer_init_9.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/fortran/gfortran.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/pointer_init_2.f90
trunk/gcc/testsuite/gfortran.dg/pointer_init_6.f90
>From gcc-bugs-return-633107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:57:18 2019
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Subject: [Bug fortran/71723] [7/8/9 Regression] [F08] ICE on invalid pointer initialization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 10 15:56:41 2019
New Revision: 268749
URL: https://gcc.gnu.org/viewcvs?rev=268749&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71723
* expr.c (gfc_check_assign): Add argument is_init_expr. If we are
looking at an init expression, issue error if the target is not a
TARGET and we are not looking at a procedure pointer.
* gfortran.h (gfc_check_assign): Add optional argument
is_init_expr.
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71723
* gfortran.dg/pointer_init_2.f90: Adjust error messages.
* gfortran.dg/pointer_init_6.f90: Likewise.
* gfortran.dg/pointer_init_9.f90: New test.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 15:59:21 2019
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Subject: [Bug fortran/71723] [7/8 Regression] [F08] ICE on invalid pointer initialization
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] [F08] |[7/8 Regression] [F08] ICE
|ICE on invalid pointer |on invalid pointer
|initialization |initialization
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-633109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 16:48:47 2019
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
Date: Sun, 10 Feb 2019 16:48:00 -0000
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--- Comment #7 from airplanemath <airplanemath at aol dot com> ---
Thank you. I will follow the progress where you indicated.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/51637] Add compile-time error if array is too large
Date: Sun, 10 Feb 2019 17:18:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No feedback, closing as WORKSFORME.
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Subject: [Bug fortran/56581] Segfault when reading source file which starts with a byte-order mark (-cpp works)
Date: Sun, 10 Feb 2019 17:28:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
AFAIU "Unicode byte-order marker" is not part of the Fortran character set and
I think the test starting with it is invalid. No feedback, closing as INVALID.
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Subject: [Bug fortran/56581] Segfault when reading source file which starts with a byte-order mark (-cpp works)
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Really closing.
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Subject: [Bug fortran/61073] -fcheck='do' leads to twice the amount of GDB steps in a do loop
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No feedback, closing.
>From gcc-bugs-return-633114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 17:40:07 2019
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Subject: [Bug fortran/87337] Internal compiler error on coarrays
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE is gone since at least 7.4. Closing as FIXED.
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Subject: [Bug fortran/83218] gforttran command fails to compile if fortran file is present inside folder "%+@"
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No feedback for over a year, closing as WORKSFORME.
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Subject: [Bug fortran/51591] Strange output from STOP statement in OpenMP region
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Nay progress after more than two years?
No progress after more than three more years?
>From gcc-bugs-return-633117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:01:26 2019
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Subject: [Bug fortran/49565] character(kind=4) is emitted as DW_ATE_unsigned, not DW_ATE_unsigned_char
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Any progress after two years and a half?
Any progress after two and a half more years? Shouldn't this PR be closed as
FIXED (AFAIU this is not a fortran bug).
>From gcc-bugs-return-633118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:08:25 2019
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Subject: [Bug fortran/53694] [OOP] GENERIC type-bound procs should be available without part-ref syntax
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> More than three years ago Tobias Burnus wrote
>
> > Actually, I am no longer sure that this PR is valid - nor is Richard Maine
> > in c.l.f. Janus seems to have the same doubts, if I read comment 5 correctly.
> >
> > The standard seems to make a distinction between 'generic type-bound procedure'
> > and 'generic procedure name'.
More that three years later without feedback I am closing this PR as INVALID.
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Subject: [Bug tree-optimization/71237] [7 regression] scev tests failing after pass reorganization
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 10 18:30:01 2019
New Revision: 268750
URL: https://gcc.gnu.org/viewcvs?rev=268750&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
Backport from trunk
* expr.c (gfc_check_assign): Add argument is_init_expr. If we are
looking at an init expression, issue error if the target is not a
TARGET and we are not looking at a procedure pointer.
* gfortran.h (gfc_check_assign): Add optional argument
is_init_expr.
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
Backport from trunk
* gfortran.dg/pointer_init_2.f90: Adjust error messages.
* gfortran.dg/pointer_init_6.f90: Likewise.
* gfortran.dg/pointer_init_9.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_9.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/expr.c
branches/gcc-8-branch/gcc/fortran/gfortran.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_2.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_6.f90
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Subject: [Bug fortran/71723] [7/8 Regression] [F08] ICE on invalid pointer initialization
Date: Sun, 10 Feb 2019 18:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71723
--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 10 18:41:03 2019
New Revision: 268751
URL: https://gcc.gnu.org/viewcvs?rev=268751&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71723
Backport from trunk
* expr.c (gfc_check_assign): Add argument is_init_expr. If we are
looking at an init expression, issue error if the target is not a
TARGET and we are not looking at a procedure pointer.
* gfortran.h (gfc_check_assign): Add optional argument
is_init_expr.
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71723
Backport from trunk
* gfortran.dg/pointer_init_2.f90: Adjust error messages.
* gfortran.dg/pointer_init_6.f90: Likewise.
* gfortran.dg/pointer_init_9.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pointer_init_9.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/expr.c
branches/gcc-7-branch/gcc/fortran/gfortran.h
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pointer_init_2.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pointer_init_6.f90
>From gcc-bugs-return-633121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:42:37 2019
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Subject: [Bug fortran/71723] [7/8 Regression] [F08] ICE on invalid pointer initialization
Date: Sun, 10 Feb 2019 18:42:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Also (commit with wrong PR number, unfortunately).
Fixed on all open branches, closing.
Author: tkoenig
Date: Sun Feb 10 18:30:01 2019
New Revision: 268750
URL: https://gcc.gnu.org/viewcvs?rev=268750&root=gcc&view=rev
Log:
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
Backport from trunk
* expr.c (gfc_check_assign): Add argument is_init_expr. If we are
looking at an init expression, issue error if the target is not a
TARGET and we are not looking at a procedure pointer.
* gfortran.h (gfc_check_assign): Add optional argument
is_init_expr.
2019-02-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71237
Backport from trunk
* gfortran.dg/pointer_init_2.f90: Adjust error messages.
* gfortran.dg/pointer_init_6.f90: Likewise.
* gfortran.dg/pointer_init_9.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_9.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/expr.c
branches/gcc-8-branch/gcc/fortran/gfortran.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_2.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_init_6.f90
>From gcc-bugs-return-633122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:44:51 2019
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Subject: [Bug fortran/49565] character(kind=4) is emitted as DW_ATE_unsigned, not DW_ATE_unsigned_char
Date: Sun, 10 Feb 2019 18:44:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #7)
> > Any progress after two years and a half?
>
> Any progress after two and a half more years? Shouldn't this PR be closed as
> FIXED (AFAIU this is not a fortran bug).
I'd like some informed feedback on this before closing.
>From gcc-bugs-return-633123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:50:02 2019
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Subject: [Bug fortran/49565] character(kind=4) is emitted as DW_ATE_unsigned, not DW_ATE_unsigned_char
Date: Sun, 10 Feb 2019 18:50:00 -0000
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I'd like some informed feedback on this before closing.
Me too, but what be done when I don't get any feedback over years?
>From gcc-bugs-return-633124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:50:21 2019
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Subject: [Bug fortran/51591] Strange output from STOP statement in OpenMP region
Date: Sun, 10 Feb 2019 18:50:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |tkoenig at gcc dot gnu.org
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Jakub, do you know what the OMP standard has to say on this?
Is "STOP 1" in an OMP region defined behavior?
>From gcc-bugs-return-633125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 18:56:03 2019
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Subject: [Bug fortran/49565] character(kind=4) is emitted as DW_ATE_unsigned, not DW_ATE_unsigned_char
Date: Sun, 10 Feb 2019 18:56:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Jason, can you maybe shed some light on this one? Is gfortran doing
something wrong here, and if so, what could be done about it?
>From gcc-bugs-return-633126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 19:26:02 2019
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From: "tydeman at tybor dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89276] New: DEC32_TRUE_MIN missing from <float.h>
Date: Sun, 10 Feb 2019 19:26:00 -0000
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Bug ID: 89276
Summary: DEC32_TRUE_MIN missing from <float.h>
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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Around 2012/09/23 with WG14 N1632, DEC32_SUBNORMAL_MIN became DEC32_TRUE_MIN in
<float.h>. The same is true for the 64 and 128 bit versions.
>From gcc-bugs-return-633127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 19:33:03 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89261] ix86_data_alignment has wrong argument type
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-10
Ever confirmed|0 |1
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Following patch:
--cut here--
Index: config/i386/i386-protos.h
===================================================================
--- config/i386/i386-protos.h (revision 268670)
+++ config/i386/i386-protos.h (working copy)
@@ -207,7 +207,7 @@
#endif /* RTX_CODE */
#ifdef TREE_CODE
-extern int ix86_data_alignment (tree, int, bool);
+extern int ix86_data_alignment (tree, unsigned int, bool);
extern unsigned int ix86_local_alignment (tree, machine_mode,
unsigned int);
extern unsigned int ix86_minimum_alignment (tree, machine_mode,
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c (revision 268670)
+++ config/i386/i386.c (working copy)
@@ -29620,7 +29616,7 @@
instead of that alignment to align the object. */
int
-ix86_data_alignment (tree type, int align, bool opt)
+ix86_data_alignment (tree type, unsigned int align, bool opt)
{
/* GCC 4.8 and earlier used to incorrectly assume this alignment even
for symbols from other compilation units or symbols that don't need
--cut here--
fixes the testcase:
.file "align.c"
.text
.globl foo
.data
.align 268435456
.type foo, @object
.size foo, 16
foo:
.long 0
.long 1072693248
.long 0
.long 1073741824
.ident "GCC: (GNU) 9.0.1 20190208 (experimental) [trunk revision
268670]"
.section .note.GNU-stack,"",@progbits
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch at [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00686.html
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #14 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 10 20:01:15 2019
New Revision: 268752
URL: https://gcc.gnu.org/viewcvs?rev=268752&root=gcc&view=rev
Log:
2019-02-10 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89077
* decl.c (add_init_expr_to_sym): Copy length of string initializer
to declared symbol.
PR fortran/89077
* gfortran.dg/pr89077.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89077.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/decl.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch at [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00120.html
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #15 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 10 20:05:34 2019
New Revision: 268753
URL: https://gcc.gnu.org/viewcvs?rev=268753&root=gcc&view=rev
Log:
2019-02-10 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89077
* decl.c (add_init_expr_to_sym): Copy length of string initializer
to declared symbol.
PR fortran/89077
* gfortran.dg/pr89077.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr89077.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/decl.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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Harald Anlauf <anlauf at gmx dot de> changed:
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CC| |anlauf at gmx dot de
--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Thomas Koenig from comment #0)
> $ cat tst3.f90
> program test
> implicit none
> integer :: i
> character(*), parameter :: y = ''
> character(*), parameter :: z = transfer ([''], y)
> end
Funny, I do not get an ICE for the first test case here with
trunk rev.268753 on x86_64-pc-linux-gnu, even after adding a
print *, z, len (z)
which gives
% ./a.out | cat -ve
0$
and which seems correct.
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Thomas Koenig from comment #1)
> Goes back a long time, at least to gcc 6.
>
> I also think that this is valid code, but if somebody can find
> language in the standard that says otherwise, please correct.
The second test case is valid, but processor dependent according
to e.g. Fortran 2003:
13.7.121 TRANSFER (SOURCE, MOLD [, SIZE])
Result Value. [...]
If the physical representation of the result is longer than that of SOURCE,
the physical representation of the leading part is that of SOURCE and the
remainder is processor dependent.
Examples:
PGI, flang 1.5 give:
% ./a.out | cat -ve
'^@ ' 6$
sunf95, g95:
'^@^@^@^@^@^@' 6$
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From: "doko at debian dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89277] New: [9 Regression] libgo memory hogs in libgo testsuite (at least on s390x-linux-gnu)
Date: Sun, 10 Feb 2019 20:41:00 -0000
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Bug ID: 89277
Summary: [9 Regression] libgo memory hogs in libgo testsuite
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Product: gcc
Version: 9.0
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This is seen on the Debian buildds, using 4gb of RAM (and 100GB swap) to run
the libgo testsuite and timing out. Apparently this works with GCC 8.
Sure, some more details are needed ...
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
Alternative versions to test case #2:
program test
implicit none
character(1), save :: z = transfer ([ ''], '*') ! ICE
! character(1), save :: z = transfer ([character(0) :: ''], '*') ! ICE
! character(1), save :: z = transfer ([character(1) :: ''], '*') ! works
print *,"'",z,"'",len(z)
end
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Subject: [Bug fortran/71723] [7/8 Regression] [F08] ICE on invalid pointer initialization
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--- Comment #17 from Walter Spector <w6ws at earthlink dot net> ---
Thank you Thomas!
>From gcc-bugs-return-633137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 21:10:46 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sun, 10 Feb 2019 21:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
The problem might be here:
check.c: gfc_calculate_transfer_sizes
5482 /* Calculate the size of the source. */
5483 *source_size = gfc_target_expr_size (source);
5484 if (*source_size == 0)
5485 return false;
Shouldn't the case tested here be handled differently?
>From gcc-bugs-return-633138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 21:42:40 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sun, 10 Feb 2019 21:42:00 -0000
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--- Comment #7 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #6)
> The problem might be here:
>
> check.c: gfc_calculate_transfer_sizes
>
> 5482 /* Calculate the size of the source. */
> 5483 *source_size = gfc_target_expr_size (source);
> 5484 if (*source_size == 0)
> 5485 return false;
>
> Shouldn't the case tested here be handled differently?
Commenting out the lines 5484-5485 makes the testcase compile,
but regtesting fails for transfer_check_3.f90:
/work/gnu/svn/build-trunk/gcc/f951 transfer_check_3.f90 -Wsurprising
transfer_check_3.f90:32:22:
32 | i = transfer (record_type(1:j), i) ! gave a warning
| 1
Warning: Intrinsic TRANSFER at (1) has partly undefined result: source size 0 <
result size 4 [-Wsurprising]
cgbrfsx test
It appears that we shall we need to be able to distinguish size 0 source
from unknown size. Thus we could change change gfc_target_expr_size
and adjust its other users.
>From gcc-bugs-return-633139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 21:56:16 2019
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Sun, 10 Feb 2019 21:56:00 -0000
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
z1.f90 has been fixed with r267356.
>From gcc-bugs-return-633140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 23:21:01 2019
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
Date: Sun, 10 Feb 2019 23:21:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vries at gcc dot gnu.org
--- Comment #10 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> (In reply to Denis Khalikov from comment #3)
> > This fix
> > 111 AddressInfo *info = cdata->get_new_frame(addr);
> > 112 if (filename)
> > 113 info->file = internal_strdup(filename);
> > 114 info->line = lineno;
> > 115 if (function) {
> > 116 info->function = DemangleAlloc(function, /*always_alloc*/ true);
> > 117 cdata->frames_symbolized++;
> > 118 }
> > 119 return 0;
> > 120 }
>
> I think you should just return 0; early if function == NULL and
> cdata->frames_symbolized > 0, trying to augment that case with
> backtrace_syminfo doesn't look right.
I don't think it can happen that frames_symbolized > 0 and backtrace_syminfo
gets called, because of the 'if (data.frames_symbolized > 0) return true' here:
...
bool LibbacktraceSymbolizer::SymbolizePC(uptr addr, SymbolizedStack *stack) {
SymbolizeCodeCallbackArg data;
data.first = stack;
data.last = stack;
data.frames_symbolized = 0;
backtrace_pcinfo((backtrace_state *)state_, addr,
SymbolizeCodePCInfoCallback,
ErrorCallback, &data);
if (data.frames_symbolized > 0)
return true;
backtrace_syminfo((backtrace_state *)state_, addr, SymbolizeCodeCallback,
ErrorCallback, &data);
return (data.frames_symbolized > 0);
}
...
(In reply to Jakub Jelinek from comment #6)
> The thing is that for backtrace_pcinfo the callback can be called multiple
> times.
> And IMNSHO the hack you want to do (fill in file/line in the
> backtrace_pcinfo call and function during backtrace_syminfo) is something
> you want to do only if backtrace_pcinfo calls the callback just once.
So how about:
...
diff --git a/libsanitizer/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc
b/libsanitizer/sanitizer_common
/sanitizer_symbolizer_libbacktrace.cc
index eebc30b124d..79db5d49fba 100644
--- a/libsanitizer/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_symbolizer_libbacktrace.cc
@@ -109,14 +109,13 @@ static int SymbolizeCodePCInfoCallback(void *vdata,
uintptr_t addr,
const char *filename, int lineno,
const char *function) {
SymbolizeCodeCallbackArg *cdata = (SymbolizeCodeCallbackArg *)vdata;
- if (function) {
- AddressInfo *info = cdata->get_new_frame(addr);
+ AddressInfo *info = cdata->get_new_frame(addr);
+ if (filename)
+ info->file = internal_strdup(filename);
+ info->line = lineno;
+ if (function)
info->function = DemangleAlloc(function, /*always_alloc*/ true);
- if (filename)
- info->file = internal_strdup(filename);
- info->line = lineno;
- cdata->frames_symbolized++;
- }
+ cdata->frames_symbolized++;
return 0;
}
@@ -161,7 +160,11 @@ bool LibbacktraceSymbolizer::SymbolizePC(uptr addr,
SymbolizedStack *stack) {
data.frames_symbolized = 0;
backtrace_pcinfo((backtrace_state *)state_, addr,
SymbolizeCodePCInfoCallback,
ErrorCallback, &data);
- if (data.frames_symbolized > 0)
+ if (data.frames_symbolized == 1 && data.last->info.function == 0)
+ /* Augment the frame by trying to fill in the missing function with
+ backtrace_syminfo. */
+ data.frames_symbolized = 0;
+ else if (data.frames_symbolized > 0)
return true;
backtrace_syminfo((backtrace_state *)state_, addr, SymbolizeCodeCallback,
ErrorCallback, &data);
...
?
>From gcc-bugs-return-633142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 23:38:49 2019
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Subject: [Bug middle-end/88780] [8/9 Regression] bogus -Wstringop-truncation for copying as many bytes from a string as its length
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-633141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 23:38:20 2019
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Subject: [Bug c/81141] missing warning using sizeof a/sizeof *a with a zero-length array
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #4)
> (In reply to comment #3)
>
> What I meant to say is: See also bug 81141 for a related request (limited to
> strncpy). The patch submitted there issues a warning for a small subset of
> the problem (strncpy) but doesn't specifically deal with zero-length arrays.
wait that's this bug
>From gcc-bugs-return-633143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 23:41:24 2019
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Subject: [Bug c++/43361] missing uninitialized warning without optimization (-O0) (PHI in always_executed basic block)
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |paolo.carlini at oracle dot com,
| |rguenth at gcc dot gnu.org
--- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #9)
> Jakub sketched a possible way to warn about this at -O0:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69723#c7
>
> Thus, let's reopen it.
cc-ing him (and a few others)
>From gcc-bugs-return-633144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 10 23:43:29 2019
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Subject: [Bug target/37759] powerpc option -mabi=no-spe still generates SPE instructions
Date: Sun, 10 Feb 2019 23:43:00 -0000
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #7)
> AFAICT, it's still the case for powerpcspe target even on trunk (as of
> r259982). While gcc apparently doesn't generate SPE instructions for both
> attached testcases anymore, I've just easily reproduced the issue w/ our
> internal codebase.
Looks like the powerpcspe target is being removed now...
>From gcc-bugs-return-633145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 00:46:24 2019
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Subject: [Bug c/67093] incorrect -Wnonnull text for execl family of functions
Date: Mon, 11 Feb 2019 00:46:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Given that -Wnonnull uses the same text for all nonnull functions I don't think
it makes sense to insist on changing its text in a subtle way just for the sake
of pedantry. Resolving as won't fix.
>From gcc-bugs-return-633146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 00:50:27 2019
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Subject: [Bug driver/31351] gcc -v --help has poor documentation for some shared Ada/C options
Date: Mon, 11 Feb 2019 00:50:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> (In reply to Manuel López-Ibáñez from comment #1)
> > This is a bug yes, but it won't get fixed unless someone that cares about it
> > steps up to fix it.
>
> I'd do this but I don't know the Ada FE well enough since I never build it
Update: I've now built the Ada FE once, but I still don't know it well enough
>From gcc-bugs-return-633147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 00:54:10 2019
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Subject: [Bug tree-optimization/80936] bcmp, bcopy, and bzero not declared nonnull
Date: Mon, 11 Feb 2019 00:54:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> Comment in builtins.def says:
>
> /* bcmp, bcopy and bzero have traditionally accepted NULL pointers
> when the length parameter is zero, so don't apply attribute "nonnull". */
>
> svn blame says Kaveh Ghazi wrote that comment; cc-ing him
I'm thinking that this comment means that the current behavior is intentional,
in which case there's no bug here.
>From gcc-bugs-return-633148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 00:55:11 2019
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Subject: [Bug other/49194] Trivially stupid inlining decisions
Date: Mon, 11 Feb 2019 00:55:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|hubicka at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #9)
> (In reply to Jan Hubicka from comment #8)
> > GCC 4.7 has now shrink wrapping that should reduce effect of inlining large
> > cold functions called once. Realistic testcases where we still kill code
> > quality would be welcome.
> >
> > I tested patch to disable inlining once for cold calls, but it does not help
> > in general. What happens is that we stop inlining
> > constructors/destructors/initialization loops that eventually kills code
> > quality of some benchmarks since known values are no longer propagated. I
> > will do more tunning of this for 4.8.
> >
> > Honza
>
> So are you still working on this then?
Guess not; unassigning
>From gcc-bugs-return-633149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:04:02 2019
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
Date: Mon, 11 Feb 2019 01:04:00 -0000
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--- Comment #11 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 45652
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45652&action=edit
Tentative patch
Patch proposed in comment #10, added ChangeLog and rationale, bootstrapped and
reg-tested.
>From gcc-bugs-return-633150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:07:23 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/71501] missing warning on printf %s with a non-nul terminated string
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.8.5, 4.9.4, 5.4.0, 6.4.0,
| |7.3.0, 8.2.0, 9.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
GCC 8 and 9 detect the unterminated strncpy call but not yet passing the result
to printf. I'm hoping to do it in GCC 10.
$ gcc -O2 -S -Wall pr71501.c
pr71501.c: In function ‘main’:
pr71501.c:7:9: warning: unused variable ‘n’ [-Wunused-variable]
char *n = "12345";
^
pr71501.c:9:3: warning: ‘strncpy’ output truncated before terminating nul
copying 5 bytes from a string of the same length [-Wstringop-truncation]
strncpy(c, "12345", 5);
^~~~~~~~~~~~~~~~~~~~~~
GCC 9 detects some very simple cases of passing unterminated arrays to printf:
$ cat z.c && gcc -O2 -S -Wall z.c
const char a[] = { '1', '2', '3' };
void f (void)
{
__builtin_printf ("%s", a);
}
z.c: In function ‘f’:
z.c:5:22: warning: ‘%s’ directive argument is not a nul-terminated string
[-Wformat-overflow=]
5 | __builtin_printf ("%s", a);
| ^~ ~
z.c:1:12: note: referenced argument declared here
1 | const char a[] = { '1', '2', '3' };
| ^
>From gcc-bugs-return-633151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:13:59 2019
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Subject: [Bug middle-end/78678] possibly missing -Warray-bounds warning
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|other |middle-end
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86651
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
The same folding "bug" is also the root cause of bug 86651.
>From gcc-bugs-return-633152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:20:34 2019
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Subject: [Bug c/86833] missing warning for out-of-bounds array access without optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86833
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
CC| |msebor at gcc dot gnu.org
Summary|missing warning for |missing warning for
|out-of-bounds array access |out-of-bounds array access
| |without optimization
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
It should be possible to detect the basic cases like the one in the test case
involving constant indices even without optimization. Anything more
complicated needs optimization.
>From gcc-bugs-return-633153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:22:15 2019
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Subject: [Bug middle-end/78678] possibly missing -Warray-bounds warning
Date: Mon, 11 Feb 2019 01:22:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also|https://gcc.gnu.org/bugzill |https://gcc.gnu.org/bugzill
|a/show_bug.cgi?id=86651 |a/show_bug.cgi?id=86691
--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Ignore comment #9. The related (same?) bug is pr86691.
>From gcc-bugs-return-633154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:26:18 2019
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Subject: [Bug middle-end/84877] Local stack copy of BLKmode parameter on the stack is not aligned when the requested alignment exceeds MAX_SUPPORTED_STACK_ALIGNMENT
Date: Mon, 11 Feb 2019 01:26:00 -0000
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Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:
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--- Comment #8 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
JFTR, also fails on cris-elf.
>From gcc-bugs-return-633155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 01:38:22 2019
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Subject: [Bug target/37759] powerpc option -mabi=no-spe still generates SPE instructions
Date: Mon, 11 Feb 2019 01:38:00 -0000
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--- Comment #9 from Arseny Solokha <asolokha at gmx dot com> ---
Yes, but AFAIK none of the PRs specific to powerpcspe have been closed so far.
And, personally, I'd like them to stay open for another release cycle in the
hope Andrew would actually revive the target this year. But it's up to gcc
maintainers to decide, of course.
>From gcc-bugs-return-633156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 02:33:41 2019
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Subject: [Bug tree-optimization/89278] New: ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Mon, 11 Feb 2019 02:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89278
Bug ID: 89278
Summary: ICE in gimplify_modify_expr, at gimplify.c:5821
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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Priority: P3
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gcc-9.0.0-alpha20190203 snapshot (r268503) ICEs when compiling the following
testcase w/ -O1 -ftrapv -ftree-loop-distribute-patterns --param
max-loop-header-insns=2:
void
or (int *r2, int u1, int a6, int ka)
{
while (u1 < a6 + ka)
{
r2[u1] = 0;
++u1;
}
}
% gcc-9.0.0-alpha20190203 -O1 -ftrapv -ftree-loop-distribute-patterns --param
max-loop-header-insns=2 -c fgcctz0a.c
during GIMPLE pass: ldist
fgcctz0a.c: In function 'or':
fgcctz0a.c:6:14: internal compiler error: in gimplify_modify_expr, at
gimplify.c:5821
6 | r2[u1] = 0;
| ~~~~~~~^~~
0x63e241 gimplify_modify_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:5821
0xaf1944 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:12438
0xaf5016 gimplify_stmt(tree_node**, gimple**)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:6685
0xafa324 gimplify_cond_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:4130
0xaf1d90 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:12395
0xaf5016 gimplify_stmt(tree_node**, gimple**)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:6685
0xaf9a7b gimplify_cond_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:4027
0xaf1d90 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify.c:12395
0xb04c6d force_gimple_operand_1(tree_node*, gimple**, bool (*)(tree_node*),
tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify-me.c:78
0xb04d3d force_gimple_operand_gsi_1(gimple_stmt_iterator*, tree_node*, bool
(*)(tree_node*), tree_node*, bool, gsi_iterator_update)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/gimplify-me.c:115
0xe089f6 generate_memset_builtin
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-loop-distribution.c:1000
0xe089f6 generate_code_for_partition
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-loop-distribution.c:1149
0xe0cb66 distribute_loop
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-loop-distribution.c:2923
0xe0e8ba execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-loop-distribution.c:3133
>From gcc-bugs-return-633157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 02:52:50 2019
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From: "christoph@lipka-koeln.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89279] New: `floorf` not in `std` despite -std=c++11
Date: Mon, 11 Feb 2019 02:52:00 -0000
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Bug ID: 89279
Summary: `floorf` not in `std` despite -std=c++11
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Consider the following code snippet:
#include <cmath>
float foo(float x)
{
return std::floorf(x);
}
Compiling with `g++ -std=c++11` causes a compiler error: `‘floorf’ is not a
member of ‘std’`.
According to the C++11 standard, `<cmath>` _must_ declare a `float
floorf(float)` in the `std` namespace and _may_ declare such a function in the
global namespace. However, `<cmath>` appears to only declares the global
function.
According to other reports, the problem is not limited to 5.4.0, but persists
to this day:
https://stackoverflow.com/questions/54623100/c-gcc-floorf-not-a-member-of-std?noredirect=1#comment96038966_54623100
(I'm not sure whether issues with the standard header files are to be
considered C++ or library issues; please re-assign if appropriate.)
>From gcc-bugs-return-633158-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:12:50 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
Date: Mon, 11 Feb 2019 07:12:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #4)
> LangEnabledBy is used by optc-gen.awk to generate options.c with calls like
> those below. Other than that, I don't think GCC has an internal data
> structure to represent this relationship (one that could be queried to give
> a list of other options that -Wimplicit controls).
No, there isn't probably a data structure. But I won't be complicated to
generate it from the LangEnabledBy by our AWK machinery.
>From gcc-bugs-return-633159-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:30:59 2019
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From: "hubicka at ucw dot cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/49194] Trivially stupid inlining decisions
Date: Mon, 11 Feb 2019 07:30:00 -0000
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--- Comment #11 from Jan Hubicka <hubicka at ucw dot cz> ---
Well, I am working on gradual improvements in the inlining decisions,
but since the PR is not very specific, we never will be perfect :)
>From gcc-bugs-return-633160-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:37:20 2019
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Subject: [Bug tree-optimization/89280] New: [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Mon, 11 Feb 2019 07:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89280
Bug ID: 89280
Summary: [7/8/9 Regression] ICE: Segmentation fault (in
is_gimple_reg_type)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-9.0.0-alpha20190210 snapshot (r268755) ICEs when compiling the following
testcase containing a call of function w/ returns_twice attribute:
int un;
void
r8 (void);
__attribute__ ((returns_twice)) int
vfork (void);
void
ef (int, int);
void
fx (void)
{
for (;;)
r8 ();
ef (vfork (), un);
}
% gcc-9.0.0-alpha20190210 -c df3xie9n.c
during GIMPLE pass: cfg
df3xie9n.c: In function 'fx':
df3xie9n.c:13:1: internal compiler error: Segmentation fault
13 | fx (void)
| ^~
0xd6f9bf crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/toplev.c:326
0xda85b4 is_gimple_reg_type
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/gimple-expr.h:75
0xda85b4 verify_gimple_call
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:3465
0xdbe2ca verify_gimple_in_cfg(function*, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:5370
0xc8a4df execute_function_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/passes.c:1977
0xc8b3fe execute_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/passes.c:2031
>From gcc-bugs-return-633161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:39:46 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89281] New: [9 Regression] gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int'
Date: Mon, 11 Feb 2019 07:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89281
Bug ID: 89281
Summary: [9 Regression] gcc/optabs.c:3901:30: runtime error:
shift exponent 32 is too large for 32-bit type 'int'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
I see following recent UBSAN error:
$ ./xgcc -B.
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-ubsan/build/gcc/testsuite/g++.dg/ext/vector27.C
-c -mno-sse -fnon-call-exceptions
../../gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for
32-bit type 'int'
#0 0x20b6cb1 in prepare_cmp_insn ../../gcc/optabs.c:3901
#1 0x20b893a in emit_cmp_and_jump_insns(rtx_def*, rtx_def*, rtx_code,
rtx_def*, machine_mode, int, rtx_def*, profile_probability)
../../gcc/optabs.c:4146
#2 0x1540b18 in do_compare_rtx_and_jump(rtx_def*, rtx_def*, rtx_code, int,
machine_mode, rtx_def*, rtx_code_label*, rtx_code_label*, profile_probability)
../../gcc/dojump.c:1171
#3 0x1541c1b in do_compare_and_jump ../../gcc/dojump.c:1245
#4 0x153abe8 in do_jump_1 ../../gcc/dojump.c:231
#5 0x153eee9 in jumpifnot_1(tree_code, tree_node*, tree_node*,
rtx_code_label*, profile_probability) ../../gcc/dojump.c:954
#6 0x17f4d2a in expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier) ../../gcc/expr.c:9389
#7 0x1323a44 in expand_gimple_stmt_1 ../../gcc/cfgexpand.c:3789
#8 0x1323f8b in expand_gimple_stmt ../../gcc/cfgexpand.c:3850
#9 0x13396e8 in expand_gimple_basic_block ../../gcc/cfgexpand.c:5886
#10 0x133e94a in execute ../../gcc/cfgexpand.c:6509
#11 0x21b0dc4 in execute_one_pass(opt_pass*) ../../gcc/passes.c:2483
#12 0x21b165a in execute_pass_list_1 ../../gcc/passes.c:2569
#13 0x21b17ae in execute_pass_list(function*, opt_pass*)
../../gcc/passes.c:2580
#14 0x1443648 in cgraph_node::expand() ../../gcc/cgraphunit.c:2195
#15 0x1445c75 in output_in_order ../../gcc/cgraphunit.c:2439
#16 0x1447279 in symbol_table::compile() ../../gcc/cgraphunit.c:2683
#17 0x1447ce4 in symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2862
#18 0x25e7433 in compile_file ../../gcc/toplev.c:481
#19 0x25ee7cf in do_compile ../../gcc/toplev.c:2176
#20 0x25eedfd in toplev::main(int, char**) ../../gcc/toplev.c:2311
#21 0x4964b26 in main ../../gcc/main.c:39
#22 0x7ffff6e3101a in __libc_start_main ../csu/libc-start.c:308
#23 0x89b559 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/cc1plus+0x89b559)
>From gcc-bugs-return-633162-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:53:56 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 07:53:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-02-11
Ever confirmed|0 |1
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Hi.
I would like to help you with that. But I need some more details:
>
> configure \
> --target=$TARGET \
> --prefix="$PREFIX" \
> --libdir="$PREFIX/lib" \
> --enable-languages=$langs \
> --disable-werror \
> --disable-nls \
> --disable-multilib \
> --disable-shared \
> --enable-tls \
> --enable-threads=posix \
> --disable-libmudflap \
> --disable-libsanitizer \
> --disable-gnu-indirect-function \
> --disable-libmpx \
> --enable-deterministic-archives \
> --enable-libstdcxx-time \
> --enable-fully-dynamic-string \
> --enable-cloog-backend=isl \
> --enable-lto \
> --enable-libgomp \
> --enable-checking=release \
>
can you please provide expanded ./configure (with all $vars expanded)?
Having the following cross-compiler on my system:
aarch64-suse-linux-gcc
how can I configure to use? Do you first export CFLAGS before ./configure?
>From gcc-bugs-return-633163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:54:37 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Mon, 11 Feb 2019 07:54:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |marxin at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r235817.
>From gcc-bugs-return-633164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 07:56:26 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Mon, 11 Feb 2019 07:56:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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| |rguenth at gcc dot gnu.org
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, can't bisect as max-loop-header-insns=2 is not so old parameter.
Richi will you please take a look?
>From gcc-bugs-return-633165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 08:13:39 2019
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
Date: Mon, 11 Feb 2019 08:13:00 -0000
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--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 11 08:13:03 2019
New Revision: 268762
URL: https://gcc.gnu.org/viewcvs?rev=268762&root=gcc&view=rev
Log:
Construct ipa_reduced_postorder always for overwritable (PR ipa/89009).
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* ipa-cp.c (build_toporder_info): Remove usage of a param.
* ipa-inline.c (inline_small_functions): Likewise.
* ipa-pure-const.c (propagate_pure_const): Likewise.
(propagate_nothrow): Likewise.
* ipa-reference.c (propagate): Likewise.
* ipa-utils.c (struct searchc_env): Remove unused field.
(searchc): Always search across AVAIL_INTERPOSABLE.
(ipa_reduced_postorder): Always allow AVAIL_INTERPOSABLE as
the only called IPA pure const can properly not propagate
across interposable boundary.
* ipa-utils.h (ipa_reduced_postorder): Remove param.
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* g++.dg/ipa/pr89009.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ipa/pr89009.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-cp.c
trunk/gcc/ipa-inline.c
trunk/gcc/ipa-pure-const.c
trunk/gcc/ipa-reference.c
trunk/gcc/ipa-utils.c
trunk/gcc/ipa-utils.h
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 08:14:58 2019
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89009
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Known to fail|9.0 |
--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/85947] gcc.dg/vect/bb-slp-div-1.c XPASSes
Date: Mon, 11 Feb 2019 08:27:00 -0000
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--- Comment #3 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Whoever added the testcase should put a comment to explain the xfail.
This would be Richard, alread on the Cc:
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Mon, 11 Feb 2019 08:28:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
$ ld --version
GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.31.1.20180828-3
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ugh, this is nasty. We add the ABNORMAL_DISPATCHER etc. because vfork returns
twice, but because the call is in unreachable code, we remove the block that
defines the SSA_NAME but nothing finds out that because the vfork was
originally unreachable, it can't be reached abnormally either.
So perhaps improve the unreachable block analysis that edges from
ABNORMAL_DISPATCHER are only valid if a block is reachable through some other
edges too?
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Subject: [Bug lto/88220] LTO ICE with GNU inline and alias's
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
$ ld --version
GNU ld (GNU Binutils; openSUSE Tumbleweed) 2.31.1.20180828-3
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
>From gcc-bugs-return-633171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 08:40:54 2019
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Subject: [Bug target/89281] [9 Regression] gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int'
Date: Mon, 11 Feb 2019 08:40:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'd say the regression has been introduced in r72185 already. Anyway, will
handle this.
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Assignee|rguenther at suse dot de |hubicka at gcc dot gnu.org
--- Comment #14 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I have posted updated patch to
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00683.html
The original analysis was correct - I placed code clearing TREE_READONLY too
late.
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Subject: [Bug target/88648] [7/8 Regression] Force unified syntax for inline assembly not functional (-masm-syntax-unified)
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Feb 11 09:26:31 2019
New Revision: 268764
URL: https://gcc.gnu.org/viewcvs?rev=268764&root=gcc&view=rev
Log:
ARM: fix -masm-syntax-unified (PR88648)
Backport from mainline.
2019-01-10 Stefan Agner <stefan@agner.ch>
PR target/88648
* config/arm/arm.c (arm_option_override_internal): Force
opts->x_inline_asm_unified to true only if TARGET_THUMB2_P.
* gcc.target/arm/pr88648-asm-syntax-unified.c: Add test to
check if -masm-syntax-unified gets applied properly.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/arm/pr88648-asm-syntax-unified.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/arm/arm.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mjambor at suse dot cz
--- Comment #14 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Still does not reproduce for trunk to me, but reproduces with gcc 8. The
problem is that ipa-cp decides to clone fread which is extern inline and then
redirect all calls to the clone that makes is self recursive.
Martin,
it seems to me that ipa-cp should not clone extern inline functions unless it
sees that it helps to clone some real functions called from it. Why the
costmodel thinks it is profitable?
Evaluating opportunities for fread/21.
- considering value 1 for param #1 size_t (caller_count: 2)
good_cloning_opportunity_p (time: 3, size: 33, freq_sum: 9514, scc) ->
evaluation: 518, threshold: 500
Creating a specialized node of fread/21.
adding an extra known scalar value 10 for param #2 size_t
cannot change function signature
replacing param #1 size_t with const 1
replacing param #2 size_t with const 10
Accounting size:4.00, time:4.00 on predicate exec:(true)
Accounting size:3.00, time:2.00 on new predicate exec:(not
inlined)
the new node is fread.constprop/37.
This is more or less design issue of the FORTIFY_SOURCE. I suppose I can try
to teach ultimate_alias_target and friends to not walk into external inline
function unless it is called directly. This will more immitate to what GCC
traditionally did before it had symbol table.
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Mon, 11 Feb 2019 09:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
nb_bytes is y_9(D) + z_10(D) >= x_7(D) ? (sizetype) ((unsigned int) (y_9(D) +
z_10(D)) - (unsigned int) x_7(D)) * 4 : 0
and force_gimple* on COND_EXPR is problematic, especially with -ftrapv.
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Subject: [Bug target/88648] [7/8 Regression] Force unified syntax for inline assembly not functional (-masm-syntax-unified)
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Feb 11 09:31:13 2019
New Revision: 268765
URL: https://gcc.gnu.org/viewcvs?rev=268765&root=gcc&view=rev
Log:
ARM: fix -masm-syntax-unified (PR88648)
Backport from mainline.
2019-01-10 Stefan Agner <stefan@agner.ch>
PR target/88648
* config/arm/arm.c (arm_option_override_internal): Force
opts->x_inline_asm_unified to true only if TARGET_THUMB2_P.
* gcc.target/arm/pr88648-asm-syntax-unified.c: Add test to
check if -masm-syntax-unified gets applied properly.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/arm/pr88648-asm-syntax-unified.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/arm/arm.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/88648] Force unified syntax for inline assembly not functional (-masm-syntax-unified)
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Summary|[7/8 Regression] Force |Force unified syntax for
|unified syntax for inline |inline assembly not
|assembly not functional |functional
|(-masm-syntax-unified) |(-masm-syntax-unified)
--- Comment #7 from ktkachov at gcc dot gnu.org ---
Fixed on all active branches.
>From gcc-bugs-return-633178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 09:35:34 2019
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Mon, 11 Feb 2019 09:35:00 -0000
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--- Comment #32 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #31 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
>> I think it is important to find out why there are those differences in line
>> numbers. Is libbacktrace broken on Solaris, or not used at all, something
>> different?
>
> The libsanitizer does its private unwinding by means of _Unwind_Backtrace,
> which works fine. But, at the end, it overwrites the first address with the
> result of __builtin_return_address, which returns the address of the call
> instruction and not the return address on the SPARC (maybe you know why,
> Jakub?) so the first frame is off by 8 bytes. I have a tentative fixlet for
> the libsanitizer.
Excellent, thanks for the detective work.
> Btw, Rainer, why did you disable fast unwinding on the SPARC? This puts the
> SPARC port in its own basket (admittedly with MIPS) so that's not very
> convenient.
For one, this is how it had been on Linux/sparc (although I wonder how
this can ever have been tested given that asan with clang is useless on
sparc). When I looked into this
https://reviews.llvm.org/D54099
I found that enabling it causes quite a number of regressions. Here's
the list that I've just recreated:
+FAIL: c-c++-common/asan/heap-overflow-1.c -O0 output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -O1 output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -O2 output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto -flto-partition=none
output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -O3 -g output pattern test
+FAIL: c-c++-common/asan/heap-overflow-1.c -Os output pattern test
+FAIL: c-c++-common/asan/pr70541.c -O0 output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O0 output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O1 output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 -flto output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 -flto -flto-partition=none
output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -O3 -g output pattern test
+FAIL: c-c++-common/asan/strncpy-overflow-1.c -Os output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O0 output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O1 output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O2 output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O2 -flto output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O2 -flto -flto-partition=none
output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -O3 -g output pattern test
+FAIL: c-c++-common/asan/use-after-free-1.c -Os output pattern test
+FAIL: g++.dg/asan/deep-stack-uaf-1.C -O0 output pattern test
Maybe this goes away with your unwinding fix, though.
While trying this, I stumbled over the fact that a 64-bit-default gcc
with -m32 doesn't define __sparcv8, unlike its 32-bit-default
equivalent, which leaves an empty sanitizer_stacktrace_sparc.o. Need to
look into this.
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Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
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--- Comment #33 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I found that enabling it causes quite a number of regressions. Here's
> the list that I've just recreated:
>
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O0 output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O1 output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O2 output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O2 -flto -flto-partition=none
> output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -O3 -g output pattern test
> +FAIL: c-c++-common/asan/heap-overflow-1.c -Os output pattern test
>
> +FAIL: c-c++-common/asan/pr70541.c -O0 output pattern test
>
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O0 output pattern test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O1 output pattern test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 output pattern test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 -flto output pattern
> test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O2 -flto
> -flto-partition=none output pattern test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -O3 -g output pattern test
> +FAIL: c-c++-common/asan/strncpy-overflow-1.c -Os output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O0 output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O1 output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O2 output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O2 -flto output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O2 -flto -flto-partition=none
> output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -O3 -g output pattern test
> +FAIL: c-c++-common/asan/use-after-free-1.c -Os output pattern test
> +FAIL: g++.dg/asan/deep-stack-uaf-1.C -O0 output pattern test
>
> Maybe this goes away with your unwinding fix, though.
OK, that was a second unwinding issue, now fixed too.
Can you remind me of the issue in 64-bit mode? Inconvenient memory layout,
right? It seems to be present on Linux as well.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Mon, 11 Feb 2019 10:01:00 -0000
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--- Comment #34 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #33 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
>> I found that enabling it causes quite a number of regressions. Here's
>> the list that I've just recreated:
[...]
>> Maybe this goes away with your unwinding fix, though.
>
> OK, that was a second unwinding issue, now fixed too.
Great.
> Can you remind me of the issue in 64-bit mode? Inconvenient memory layout,
> right? It seems to be present on Linux as well.
Right: 64-bit Solaris/SPARC uses the full 64-bit address space:
https://docs.oracle.com/cd/E37838_01/html/E66175/advanced-2.html#SSFDGadvanced-5
The gap between the low and high parts cannot be determined
programmatically right now and varies between different sparc machines.
Even if that could be fixed (there's been talk about adding an interface
to determine that information at runtime), the current shadow address
calculation cannot cope with such a discontinuous address space.
64-bit Solaris/x86 had the same problem, but the layout was changed for
Solaris 11.4 at least, so here things are easier:
https://docs.oracle.com/cd/E37838_01/html/E66175/fcowb.html#SSFDGfcpaf
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at redhat dot com
--- Comment #15 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
The problem with FORTIFY_SOURCE wrappers is that they break invariant that
inline and offline versions of the functions are interchangeable and have same
semantics. I suppose this is the case of more GNU inline uses (and I hope it is
limited to those - what does C standard says about its semantics of extern
inline?) but we need to keep that separate from extern inlines autogenerated by
C++ frontend for keyed functions/externally instantiated functions which are
guaranteed to have same semantics as their offline variant. Handling those
conservatively is a bad idea because it would bring way too many additional
function bodies to LTO and confuse code size metrics.
I think the proper approach to handle GNU inline would be the following
1) extend cgraph code to support symbols that are both syntactic aliases and
function definitions
2) teach lto-symtab that extern inlines are never prevailing symbols, so alias
walks points to the external definition
3) avoid GNU extern inlines to be merged because they do not need to have same
semantics as the offline variant of the function. (we need to be sure that this
won't happen for C++ keyed functions)
4) teach inliner to inline extern inline instead of looking for alias target if
call goes directly to extern inline and ignore the extern inlines in most of
the other optimization passes (which would happen if alias walker walked to the
finallink). We can still consider cloning in ipa-cp of those if that helps to
clone calls within the extern inline function that targets non-inline
this should preserve current semantics even in case one would LTO fread
implementation. But for release branches I think we should avoid that and
simply target to get FORTIFY_SOURCE working when glibc is not LTO optimized.
For that I think fixing ipa-cp heuristics should work. We still may inline
fortify source wrapper into a call that was originally from unit withould
DFORTIFY_SOURCE. Is that considered a show stopper? If so, i can disable
inlining of GNU extern inlines that are not called directly but via attribute.
Martin (Jambor), can you please look at the ipa-cp bits?
If this conservative approach fails, i can work on 1), but that would require
changes on multiple places - at the moment we do not expect that symbol can
define two things (function body and alias)
>From gcc-bugs-return-633183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:17:03 2019
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Subject: [Bug libstdc++/79700] std::fabsf and std::fabsl missing from <cmath>
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |christoph@lipka-koeln.de
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89279 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:17:03 2019
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Subject: [Bug libstdc++/89279] `floorf` not in `std` despite -std=c++11
Date: Mon, 11 Feb 2019 10:17:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Christoph Lipka from comment #0)
> (I'm not sure whether issues with the standard header files are to be
> considered C++ or library issues; please re-assign if appropriate.)
I would have thought it's obvious that a problem in the library headers is a
library problem.
This is Bug 79700
*** This bug has been marked as a duplicate of bug 79700 ***
>From gcc-bugs-return-633184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:20:06 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 10:20:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
I hope I understand the failure. So what happens:
- first a new map is created with to_line: 2578 (with m_column_and_range_bits
== 13)
- then a new request comes with to_line: 404198, m_column_and_range_bits is
extended to 15 and we decide to reuse the existing map.
- as seen the line difference is huge, ORDINARY_MAP_STARTING_LINE_NUMBER (map)
- to_line == 401620
- that would require 18 bits to represent
I'm going to append a patch candidate.
>From gcc-bugs-return-633185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:27:59 2019
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GNU extern inline is an extension, so is covered by whatever we define (or
should have defined). We've never required that the out of line and inline
definitions are the same or in any way similar (prototypes have to match
obviously), though without always_inline it is a compiler's choice what it will
pick, whether it decides to inline it or not. AFAIK __fortify_function are
extern inline __attribute__((always_inline, gnu_inline, aritifical)), so at
that point the compiler needs to do what it is told, if it is possible to
inline at all, inline, period.
The additional complication is that those __fortify_function functions need to
call the original out of line functions, and that is done through those
aliases, with __asm redirects, so it is important to note in cgraph that those
should not call those always inline extern inline gnu_inline functions, but the
out of line ones.
>From gcc-bugs-return-633186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:37:29 2019
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 10:37:00 -0000
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--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45653
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45653&action=edit
Patch candidate
Patch candidate that survives both reduced and not reduced test-cases.
David does the patch make sense?
>From gcc-bugs-return-633187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 10:37:30 2019
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Subject: [Bug libbacktrace/81983] libbacktrace calls bsearch with NULL base
Date: Mon, 11 Feb 2019 10:37:00 -0000
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--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Ian, how do you want this fixed?
We could add a safe_bsearch:
...
diff --git a/libbacktrace/internal.h b/libbacktrace/internal.h
index 065b9535e8b..7d9aa5e88c5 100644
--- a/libbacktrace/internal.h
+++ b/libbacktrace/internal.h
@@ -317,4 +317,13 @@ extern int backtrace_uncompress_zdebug (struct
backtrace_state *,
unsigned char **uncompressed,
size_t *uncompressed_size);
+static inline void *
+safe_bsearch (const void *key, const void *base, size_t nel, size_t width,
+ int (*compar)(const void *, const void *))
+{
+ return (base == NULL
+ ? NULL
+ : bsearch (key, base, nel, width, compar));
+}
+
#endif
...
and do a:
...
$ sed -i \
"s/bsearch (/safe_bsearch (/g" \
libbacktrace/*
...
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #44 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 11 10:39:59 2019
New Revision: 268766
URL: https://gcc.gnu.org/viewcvs?rev=268766&root=gcc&view=rev
Log:
PR bootstrap/88714
* config/arm/ldrdstrd.md (*arm_ldrd, *arm_strd): Use q constraint
instead of r.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/ldrdstrd.md
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Subject: [Bug fortran/89282] New: Garbage arithmetics results in fortran with -O3 and overloaded operators
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89282
Bug ID: 89282
Summary: Garbage arithmetics results in fortran with -O3 and
overloaded operators
Product: gcc
Version: 6.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: perini at wisc dot edu
Target Milestone: ---
Created attachment 45654
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45654&action=edit
Small test program reproducing the error
Hi,
I'm getting garbage results out of simple arithmetics (i.e., A minus B) when
called in from a derived type, and defined using array-based notation. The
problem only appears when compiling using -O3 optimization flag
I am not sure whether this issue comes from wrong array bounds checking or its
related with the processor's cacheline. It seems that the error appears only
for some specific array sizes, i.e., n=5. Anyway, the attached program
reproduces the error with gcc/gfortran 6.2.0 on Windows:
The program is trying to compute 3.d0 - [(1.d0, j=1,5)], where the data array
is contained in a derived type, and the "scalar minus array" operation is
performed using an overloaded operator. All array elements from the test should
return 2.d0.
Compiled using:
gfortran -O3 test_gcc_overloaded.f90
it returns:
$ a.exe
type(t) object <r1>, size=5
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 4.46848-317
type(t) object <r1>, size=6
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 2.00000E+00
x(6) = 2.00000E+00
Thanks,
Federico
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Mon, 11 Feb 2019 10:54:00 -0000
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--- Comment #17 from Jan Hubicka <hubicka at ucw dot cz> ---
> GNU extern inline is an extension, so is covered by whatever we define (or
> should have defined). We've never required that the out of line and inline
> definitions are the same or in any way similar (prototypes have to match
> obviously), though without always_inline it is a compiler's choice what it will
> pick, whether it decides to inline it or not. AFAIK __fortify_function are
> extern inline __attribute__((always_inline, gnu_inline, aritifical)), so at
> that point the compiler needs to do what it is told, if it is possible to
> inline at all, inline, period.
The problem here is situation where indirect calls are present to the
fortified wraper. This is usual issue with always_inline not really
having the meaning "this function will always be inlined" becuase
it may be called indirectly but also directly if indirect call was
optimized to direct call too late in the optimization queue. We never
promised anything in this direction.
The harder problem here is the situation where both fortify wrapper and
the real function iplementation ends up in one translation unit (at LTO
time) that is something not really used before though it could be done
using asm("symbol_name") trickery which would not work very reliably.
The question is how invasiave changes we want to deploy to solve this
scenario and to what degree we want to commit supporting this in future.
We may also simply drop all those functions after early inlining and not
even consider fortifying calls turned form indirect to direct calls at
LTO time. The question would be whether to do that for all gnu_inlines
(and thus reduce their ability to be inlined through indirect calls) or
be bit more fine grained.
>From gcc-bugs-return-633191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 11:05:26 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 11 Feb 2019 11:05:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-11
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
WORKSFORME on darwin for all the revisions I have tried from 4.8 up to trunk
(9.0), except 4.9 and 5.3 r234496, but 5.4 r253506 works as expected.
What is the output of gfortran -v?
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Mon, 11 Feb 2019 11:14:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|jakub at redhat dot com |
--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Sure, if it is originally an indirect call, it is a best effort, if we can
optimize it into a direct call early enough, we can inline and thus do the
inline definition, if not, we do the out of line definition. I'd say
regardless of whether in the end it is in the same TU or different TU.
Essentially after the IPA passes (or even when IPA inlining is finished) the
inline definition should be thrown away (except perhaps for debug info
purposes.
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Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 11 Feb 2019 11:14:00 -0000
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--- Comment #2 from federico <perini at wisc dot edu> ---
$ gfortran -v
Built by Equation Solution <http://www.Equation.com>.
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=c:/users/federico/gcc-6.2.0/bin/../libexec/gcc/x86_64-w64-mingw32/6.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-6.2.0-mingw/configure --host=x86_64-w64-mingw32
--build=x86_64-unknown-linux-gnu --target=x86_64-w64-mingw32
--prefix=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/gcc/6.2.0
--with-sysroot=/home/gfortran/gcc-home/binary/mingw32/cross/x86_64/gcc/6-20150531
--with-gcc --with-gnu-ld --with-gnu-as
--with-gmp=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/gmp
--with-mpfr=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/mpfr
--with-mpc=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/mpc
--with-cloog=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/cloog
--with-diagnostics-color=auto-if-env --enable-cloog-backend=isl
--enable-targets=i686-w64-mingw32,x86_64-w64-mingw32 --enable-lto
--enable-languages=c,c++,fortran --enable-threads=win32 --enable-static
--enable-shared=lto-plugin --enable-plugins --enable-ld=yes
--enable-libquadmath --enable-libquadmath-support --enable-libgomp
--disable-checking --disable-nls --disable-tls --disable-win32-registry
Thread model: win32
gcc version 6.2.0 (GCC)
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From: "perini at wisc dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 11 Feb 2019 11:17:00 -0000
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--- Comment #3 from federico <perini at wisc dot edu> ---
Thanks Dominique.
- Output from gcc 5.3.0 has the same issue:
type(t) object <r1>, size=5
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 4.25474E+15
type(t) object <r1>, size=6
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 2.00000E+00
x(6) = 2.00000E+00
- Output from gcc 7.4.0 doesn't have this issue anymore:
type(t) object <r1>, size=5
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 2.00000E+00
type(t) object <r1>, size=6
x(1) = 2.00000E+00
x(2) = 2.00000E+00
x(3) = 2.00000E+00
x(4) = 2.00000E+00
x(5) = 2.00000E+00
x(6) = 2.00000E+00
Maybe it's been solved as part of other bugs I couldn't find by searching?
Federico
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 11:24:00 -0000
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--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
During the bug investigation I noticed a strange thing in line-map.c:
700 if (line_delta < 0
701 || (line_delta > 10
702 && line_delta * map->m_column_and_range_bits > 1000)
703 || (max_column_hint >= (1U << effective_column_bits))
704 || (max_column_hint <= 80 && effective_column_bits >= 10)
705 || (highest > LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES
706 && map->m_range_bits > 0)
707 || (highest > LINE_MAP_MAX_LOCATION_WITH_COLS
708 && (set->max_column_hint || highest >=
LINE_MAP_MAX_LOCATION)))
709 add_map = true;
m_column_and_range_bits > 1000 is always false as:
/* Number of the low-order source_location bits used for column numbers
and ranges. */
unsigned int m_column_and_range_bits : 8;
and the sub-expression on lines 701 and 702 is ugly as well.
What's the purpose of the check?
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Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89282
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Maybe it's been solved as part of other bugs I couldn't find by searching?
I don't think it is worth the effort to find when this has been fixed. I'll
commit your test and close the PR as FIXED.
>From gcc-bugs-return-633197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 11:52:25 2019
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From: "ohaiziejohwahkeezuoz at xff dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 11:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89260
--- Comment #4 from ohaiziejohwahkeezuoz at xff dot cz ---
See Comment 1 please.
CFLAGS for gcc are in Comment 2. Just "-ggdb -Og".
Failing cross-compiler is built on Arch Linux, with the default compiler:
# gcc --verbose
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
>From gcc-bugs-return-633198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 11:59:57 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89283] New: [8/9 Regression] ICE: Segmentation fault (in stmt_could_throw_1_p)
Date: Mon, 11 Feb 2019 11:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89283
Bug ID: 89283
Summary: [8/9 Regression] ICE: Segmentation fault (in
stmt_could_throw_1_p)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: EH, ice-on-invalid-code
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gcc-9.0.0-alpha20190210 snapshot (r268755) ICEs when compiling the following
testcase containing a call of function w/ returns_twice attribute:
__attribute__ ((returns_twice)) int
zn (void);
int
sz (int i0)
{
return zn ();
return zn () < i0 + 2;
}
% gcc-9.0.0-alpha20190210 -fexceptions -fnon-call-exceptions -c vhkmslon.c
during GIMPLE pass: cfg
vhkmslon.c: In function 'sz':
vhkmslon.c:5:1: internal compiler error: Segmentation fault
5 | sz (int i0)
| ^~
0xd6f9bf crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/toplev.c:326
0xdd1f38 stmt_could_throw_1_p
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2819
0xdd1f38 stmt_could_throw_p(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2884
0xdd21b4 stmt_could_throw_p(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2856
0xdd21b4 stmt_can_throw_internal(function*, gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-eh.c:2948
0xdb539f gimple_verify_flow_info
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:5541
0x91778c verify_flow_info()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/cfghooks.c:263
0xdc1774 checking_verify_flow_info
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/cfghooks.h:198
0xdc1774 cleanup_tree_cfg_noloop
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfgcleanup.c:938
0xdc1774 cleanup_tree_cfg()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfgcleanup.c:989
0xdbcede execute_build_cfg
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:415
0xdbcede execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-cfg.c:444
I'm not sure whether it is a duplicate of PR89280.
>From gcc-bugs-return-633199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 12:02:59 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 12:02:00 -0000
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--- Comment #5 from ohaiziejohwahkeezuoz at xff dot cz ---
Reproducing this might be somewhat complicated, because harfbuzz has some
dependencies, which would also needed to be built. But I have captured the
failing command, and can run gdb on it interactively after segault, so if you
have any suggestions on what to look for, or how to extract more detail other
than the backtrace I've provided, I can do some debugging on my side.
It's failing at the final linking step (probably during the load/parsing of lto
object files from disk), where all the many object files are processed by the
LTO, so I can't provide the reduced testcase.
I'll check if harfbuzz 2.3.1 builds with gcc 8.2.0 (2.3.0 did, so that might
help in reducing the search space).
>From gcc-bugs-return-633200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 12:21:10 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 12:21:00 -0000
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--- Comment #6 from ohaiziejohwahkeezuoz at xff dot cz ---
One question. Are the LTO object files built with gcc 8.2.0 supposed to be
compatible with those built with 8.2 branch tip? I have static library
dependencies that are also compiled with LTO, but with gcc 8.2.0.
Gcc doesn't complain about any version mismatch though.
>From gcc-bugs-return-633201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 12:51:19 2019
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Subject: [Bug target/89229] [7/8 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Mon, 11 Feb 2019 12:51:00 -0000
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-cfl-1 gcc]$ cat
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gcc.target/i386/pr89029-1.c
/* { dg-do assemble { target { avx512bw && avx512vl } } } */
/* { dg-options "-O1 -mavx512bw -mavx512vl -mtune=skylake-avx512" } */
extern void abort (void);
extern void exit (int);
struct s { unsigned char a[256]; };
union u { struct { struct s b; int c; } d; struct { int c; struct s b; } e; };
static union u v;
static union u v0;
static struct s *p = &v.d.b;
static struct s *q = &v.e.b;
static inline struct s rp (void) { return *p; }
static inline struct s rq (void) { return *q; }
static void pq (void) { *p = rq(); }
static void qp (void) { *q = rp(); }
static void
init (struct s *sp)
{
int i;
for (i = 0; i < 256; i++)
sp->a[i] = i;
}
static void
check (struct s *sp)
{
int i;
for (i = 0; i < 256; i++)
if (sp->a[i] != i)
abort ();
}
void
main_test (void)
{
v = v0;
init (p);
qp ();
check (q);
v = v0;
init (q);
pq ();
check (p);
exit (0);
}
[hjl@gnu-cfl-1 gcc]$ ./xgcc -B./ -c -O1 -mavx512bw -mavx512vl
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gcc.target/i386/pr89029-1.c
-march=skylake-avx512
/tmp/ccqZUBNW.s: Assembler messages:
/tmp/ccqZUBNW.s:34: Error: unsupported instruction `vmovdqa'
/tmp/ccqZUBNW.s:35: Error: unsupported instruction `vmovdqa'
/tmp/ccqZUBNW.s:36: Error: unsupported instruction `vmovdqa'
[hjl@gnu-cfl-1 gcc]$
>From gcc-bugs-return-633202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 12:55:04 2019
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 12:55:00 -0000
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to ohaiziejohwahkeezuoz from comment #5)
> Reproducing this might be somewhat complicated, because harfbuzz has some
> dependencies, which would also needed to be built. But I have captured the
> failing command, and can run gdb on it interactively after segault, so if
> you have any suggestions on what to look for, or how to extract more detail
> other than the backtrace I've provided, I can do some debugging on my side.
>
> It's failing at the final linking step (probably during the load/parsing of
> lto object files from disk), where all the many object files are processed
> by the LTO, so I can't provide the reduced testcase.
>
> I'll check if harfbuzz 2.3.1 builds with gcc 8.2.0 (2.3.0 did, so that might
> help in reducing the search space).
I would like to get a reproducible test-case. You can run the linking command
line with --save-temps --verbose. And then you can reduce number of objects
needed. For .a files, one would need to extract them and provide .o files on
command line. Doing that one can get minimal set of objects. And then you can
create pre-processed files for these (-E option). It will generate a minimal
reproducible test-case.
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Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 11 Feb 2019 12:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89282
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It stopped failing with r240291, but because it just added early VRP, it just
went latent. With -O3 -fno-tree-vrp it was miscompiled until r240303 aka
PR77648 fix. That fix has been backported to 6.3 and 5.5.
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 12:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89260
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to ohaiziejohwahkeezuoz from comment #6)
> One question. Are the LTO object files built with gcc 8.2.0 supposed to be
> compatible with those built with 8.2 branch tip? I have static library
> dependencies that are also compiled with LTO, but with gcc 8.2.0.
>
> Gcc doesn't complain about any version mismatch though.
We have a LTO bytecode check, so that should be fine. However I would start
with excluding of these static archives from the linking command line. Maybe we
forgot to bump LTO format in between 8.2.0 and 8.2 tip.
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Subject: [Bug libstdc++/89023] libstdc++ test failure; can't find omp.h with --disable-libgomp
Date: Mon, 11 Feb 2019 12:57:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Feb 11 12:56:59 2019
New Revision: 268769
URL: https://gcc.gnu.org/viewcvs?rev=268769&root=gcc&view=rev
Log:
PR libstdc++/89023 fix test that fails when <omp.h> not available
Instead of a single test that only checks whether <regex> can be
included in Parallel Mode, add tests for each of C++11/C++14/C++17 that
check whether <bits/extc++.h> is compatible with _GLIBCXX_PARALLEL.
This increases the coverage to (almost) all headers.
If <omp.h> is not available then the tests will trivially pass, because
we don't care about compatibility with _GLIBCXX_PARALLEL in that case.
PR libstdc++/89023
* testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
* testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
* testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
* testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
Added:
trunk/libstdc++-v3/testsuite/17_intro/headers/c++2011/parallel_mode.cc
- copied, changed from r268767,
trunk/libstdc++-v3/testsuite/28_regex/headers/regex/parallel_mode.cc
trunk/libstdc++-v3/testsuite/17_intro/headers/c++2014/parallel_mode.cc
- copied, changed from r268767,
trunk/libstdc++-v3/testsuite/28_regex/headers/regex/parallel_mode.cc
trunk/libstdc++-v3/testsuite/17_intro/headers/c++2017/parallel_mode.cc
- copied, changed from r268767,
trunk/libstdc++-v3/testsuite/28_regex/headers/regex/parallel_mode.cc
Removed:
trunk/libstdc++-v3/testsuite/28_regex/headers/regex/parallel_mode.cc
Modified:
trunk/libstdc++-v3/ChangeLog
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 12:59:00 -0000
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--- Comment #9 from ohaiziejohwahkeezuoz at xff dot cz ---
The build of harfbuzz 2.3.1 with gcc 8.2.0 succeeds.
I can also confirm that re-building all dependencies of harfbuzz with 8.2
branch rev268702 also succeeds.
So the issue is with 8.2.1 not being able to use/read LTO objects built with
8.2.0 in some specific cases (triggered by harfbuzz C++ code for me).
So if LTO object files are not supposed to be compatible between even minor gcc
releases, this can be closed.
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Subject: [Bug libstdc++/89023] libstdc++ test failure; can't find omp.h with --disable-libgomp
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Target Milestone|--- |9.0
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed now.
We could also do something like the following, but I don't think it's worth
bothering with:
diff --git a/libstdc++-v3/include/bits/algorithmfwd.h
b/libstdc++-v3/include/bits/algorithmfwd.h
index 40e051aa9e3..72b37026836 100644
--- a/libstdc++-v3/include/bits/algorithmfwd.h
+++ b/libstdc++-v3/include/bits/algorithmfwd.h
@@ -847,7 +847,11 @@ _GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#ifdef _GLIBCXX_PARALLEL
-# include <parallel/algorithmfwd.h>
+# if __has_include(<omp.h>)
+# include <parallel/algorithmfwd.h>
+# else
+# warning "_GLIBCXX_PARALLEL is defined, but libgomp is not enabled"
+# endif
#endif
#endif
diff --git a/libstdc++-v3/include/bits/stl_algobase.h
b/libstdc++-v3/include/bits/stl_algobase.h
index 2b69e658fe8..463d89b7123 100644
--- a/libstdc++-v3/include/bits/stl_algobase.h
+++ b/libstdc++-v3/include/bits/stl_algobase.h
@@ -1456,7 +1456,11 @@ _GLIBCXX_END_NAMESPACE_VERSION
// of getting the base algorithms. So, make sure that parallel bits
// come in too if requested.
#ifdef _GLIBCXX_PARALLEL
-# include <parallel/algobase.h>
+# if __has_include(<omp.h>)
+# include <parallel/algobase.h>
+# else
+# warning "_GLIBCXX_PARALLEL is defined, but libgomp is not enabled"
+# endif
#endif
#endif
diff --git a/libstdc++-v3/include/experimental/functional
b/libstdc++-v3/include/experimental/functional
index 90f2652c29b..bcaf9f80ca9 100644
--- a/libstdc++-v3/include/experimental/functional
+++ b/libstdc++-v3/include/experimental/functional
@@ -40,7 +40,7 @@
#include <vector>
#include <array>
#include <bits/stl_algo.h>
-#ifdef _GLIBCXX_PARALLEL
+#if defined _GLIBCXX_PARALLEL && __has_include(<omp.h>)
# include <parallel/algorithm> // For std::__parallel::search
#endif
#include <experimental/bits/lfts_config.h>
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 13:03:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to ohaiziejohwahkeezuoz from comment #9)
> The build of harfbuzz 2.3.1 with gcc 8.2.0 succeeds.
>
> I can also confirm that re-building all dependencies of harfbuzz with 8.2
> branch rev268702 also succeeds.
>
> So the issue is with 8.2.1 not being able to use/read LTO objects built with
> 8.2.0 in some specific cases (triggered by harfbuzz C++ code for me).
Great!
>
> So if LTO object files are not supposed to be compatible between even minor
> gcc releases, this can be closed.
When there's no change in LTO bytecode than it should be possible. In this case
there's a change. Let me investigate.
Thank you for help!
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 13:08:00 -0000
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--- Comment #11 from ohaiziejohwahkeezuoz at xff dot cz ---
(In reply to Martin Liška from comment #8)
> I would like to get a reproducible test-case. You can run the linking
> command line with --save-temps --verbose. And then you can reduce number of
> objects needed. For .a files, one would need to extract them and provide .o
> files on command line. Doing that one can get minimal set of objects. And
> then you can create pre-processed files for these (-E option). It will
> generate a minimal reproducible test-case.
I don't know, the failing command has like 30kB of command line options after
doing what you suggest. It's huuuge for any kind of manual
processing/elimination.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89284
Bug ID: 89284
Summary: gcc -fsanitize=undefined inhibits -Wuninitialized
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45655
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45655&action=edit
test case
Hello
Sanitzer team referred me back to here
https://github.com/google/sanitizers/issues/1045#issuecomment-462197191
test case attached. Is this due to gcc?
$ gcc-8 -Wall -fsanitize=undefined,address -o undef undef.c
undef.c: In function ‘main’:
undef.c:11:13: warning: unused variable ‘b’ [-Wunused-variable]
t_t b = a;
^
jonny@asus:~/code/undef_t$ gcc-8 -Wall -fsanitize=address -o undef undef.c
undef.c: In function ‘main’:
undef.c:11:13: warning: unused variable ‘b’ [-Wunused-variable]
t_t b = a;
^
undef.c:9:15: warning: ‘a.unset.hello’ is used uninitialized in this function
[-Wuninitialized]
if(a.unset.hello)
~~~~~~~^~~~~~
undef.c:11:13: warning: ‘a’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
t_t b = a;
^
jonny@asus:~/code/undef_t$
>From gcc-bugs-return-633211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 13:13:18 2019
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Mon, 11 Feb 2019 13:13:00 -0000
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--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
> I don't know, the failing command has like 30kB of command line options
> after doing what you suggest. It's huuuge for any kind of manual
> processing/elimination.
Sure, now we know the root cause so no test-case would be needed.
>From gcc-bugs-return-633212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 13:16:06 2019
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Subject: [Bug c++/89285] New: ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 13:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89285
Bug ID: 89285
Summary: ICE after casting the this pointer in the constructor
in C++17 mode
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: guus at debian dot org
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Created attachment 45656
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45656&action=edit
Minimal reproducer code
While developing some code that links nested struct variables together in a
linked list at compile time, I got an ICE when I modified my code to, instead
of
storing pointers in the linked list, stored relative offsets. It seems that the
ICE was triggered due to doing a reinterpret_cast<char *>(this) inside a
constructor, although I might be wrong about that.
GCC version: gcc (Debian 8.2.0-20) 8.2.0
System type: Debian GNU/Linux unstable on an AMD64 machine
> g++ -std=c++17 -c reproducer.cc
during RTL pass: expand
reproducer.cc: In function ‘void __static_initialization_and_destruction_0(int,
int)’:
reproducer.cc:11:43: internal compiler error: in expand_expr_real_1, at
expr.c:10043
*child = reinterpret_cast<char *>(this) - reinterpret_cast<char *>(child);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x7f4478edc09a __libc_start_main
../csu/libc-start.c:308
>From gcc-bugs-return-633213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 13:32:41 2019
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Subject: [Bug c++/89285] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 13:32:00 -0000
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--- Comment #1 from Guus Sliepen <guus at debian dot org> ---
Comment on attachment 45656
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45656
Minimal reproducer code
The while-loop can be removed as well, and it will still give an ICE.
>From gcc-bugs-return-633214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 13:59:15 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Mon, 11 Feb 2019 13:59:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I don't consider this issue resolved.
Yesterday I did a make-check for a single test case, using
RUNTESTFLAGS="powerpc.exp=srad-modulo.c". It failed, so I looked in my log
file and saw:
spawn -ignore SIGHUP /home/wschmidt/gcc/build/gcc-mainline-test2/gcc/xgcc
-B/home/wschmidt/gcc/build/gcc-mainline-test2/gcc/
/home/wschmidt/gcc/gcc-mainline-test2/gcc/testsuite/gcc.target/powerpc/srad-modulo.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O2 -mvsx -lm -o ./srad-modulo.exe^M
^[[01m^[[Kcc1:^[[m^[[K ^[[01;31m^[[Kerror: ^[[m^[[Kargument to
'^[[01m^[[K-O^[[m^[[K' should be a non-negative integer, '^[[01m^[[Kg^[[m^[[K',
'^[[01m^[[Ks^[[m^[[K' or '^[[01m^[[Kfast^[[m^[[K'^M
compiler exited with status 1
Executing on host: /home/wschmidt/gcc/build/gcc-mainline-test2/gcc/xgcc
-B/home/wschmidt/gcc/build/gcc-mainline-test2/gcc/ offload_gcn7262.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -foffload=amdgcn-unknown-amdhsa -S -o
offload_gcn7262.s (timeout = 300)
spawn -ignore SIGHUP /home/wschmidt/gcc/build/gcc-mainline-test2/gcc/xgcc
-B/home/wschmidt/gcc/build/gcc-mainline-test2/gcc/ offload_gcn7262.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -foffload=amdgcn-unknown-amdhsa -S -o
offload_gcn7262.s^M
xgcc: fatal error: GCC is not configured to support amdgcn-unknown-amdhsa as
offload target^M
compilation terminated.^M
compiler exited with status 1
FAIL: gcc.target/powerpc/srad-modulo.c (test for excess errors)
Excess errors:
^[[01m^[[Kcc1:^[[m^[[K ^[[01;31m^[[Kerror: ^[[m^[[Kargument to
'^[[01m^[[K-O^[[m^[[K' should be a non-negative integer, '^[[01m^[[Kg^[[m^[[K',
'^[[01m^[[Ks^[[m^[[K' or '^[[01m^[[Kfast^[[m^[[K'
I was really confused by this (granted, the embedded color codes didn't help),
and if I hadn't already been aware of this bugzilla I wouldn't have known what
to think. I was able to correct my error, but the existence of this bug wasted
my time and would really have flummoxed anyone who hadn't seen the bug before.
I don't think this should be closed until the problem is resolved when we don't
configure offload targets. "Just once" is better than 420 times, but it's
still wrong.
>From gcc-bugs-return-633215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:08:48 2019
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From: "dan.raviv at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85250] Builtin operator overload resolution fails to consider user-defined conversion template
Date: Mon, 11 Feb 2019 14:08:00 -0000
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Dan Raviv <dan.raviv at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dan.raviv at gmail dot com
--- Comment #1 from Dan Raviv <dan.raviv at gmail dot com> ---
See also
https://stackoverflow.com/questions/54591524/use-of-overloaded-operator-is-ambiguous-with-template-cast-operator
for a case of misrecognition of the template conversion function.
>From gcc-bugs-return-633216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:13:51 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Mon, 11 Feb 2019 14:13:00 -0000
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't see why this should be reopened. Many of the effective target
procedures leave some output in the log files, that is completely normal. Why
should this one be an exception?
E.g.
spawn -ignore SIGHUP /home/jakub/src/gcc/obj14/gcc/testsuite/g++3/../../xg++
-B/home/jakub/src/gcc/obj14/gcc/testsuite/g++3/../../ -fsanitize=address -g
-I/home/jakub/src/gcc/gcc/testsuite/../../libsanitizer/include
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -nostdinc++
-I/home/jakub/src/gcc/obj14/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/jakub/src/gcc/obj14/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/jakub/src/gcc/libstdc++-v3/libsupc++
-I/home/jakub/src/gcc/libstdc++-v3/include/backward
-I/home/jakub/src/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -c -o
ilp3225692.o ilp3225692.c
ilp3225692.c:4:35: error: narrowing conversion of '-1' from 'int' to 'long
unsigned int' [-Wnarrowing]
ilp3225692.c:4:27: error: size of array 'dummy' is negative
compiler exited with status 1
from failed ilp32 test, many others.
>From gcc-bugs-return-633217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:28:20 2019
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--- Comment #17 from Andrew Stubbs <ams at gcc dot gnu.org> ---
If this is going to annoy a lot of people then I suppose I could add an
additional message stating that the error can safely be ignored?
Or, maybe there's a way to silence/hide the output from
check_no_compiler_messages?
>From gcc-bugs-return-633218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:36:40 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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--- Comment #18 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #16)
> I don't see why this should be reopened. Many of the effective target
> procedures leave some output in the log files, that is completely normal.
> Why should this one be an exception?
This is running a test that nobody asked for. I don't understand why the
effective target is even being checked!!
>From gcc-bugs-return-633219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:38:26 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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--- Comment #19 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Specifially, I asked to compile only srad-modulo.c, but I end up with a
compilation of offload_gcn7262.c in my log when I do not configure in any way
to test for this.
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Various effective targets are checked already in the initialization of various
*.exp, etc. E.g. struct-layout-1.exp checks
check_effective_target_short_enums, gomp.exp checks
check_effective_target_fopenmp, dfp.exp checks dfp effective target, lto.exp
lto, sso.exp int32, ubsan.exp that -fsanitize=undefined works, many others.
That is again normal and happens a lot. I really don't understand why you care
about this. The log file is indeed verbose and prints everything that has been
executed. Are you upset that there is fatal error: in there, or even error:
would upset you (as I said above, that happens e.g. with ilp32 or lp64 etc. if
those fail).
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Subject: [Bug fortran/87689] Memory corruption on Power 8
Date: Mon, 11 Feb 2019 14:46:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amodra at gmail dot com
--- Comment #9 from Alan Modra <amodra at gmail dot com> ---
The call in main is wrong. From comment #3
> Tree dump looks reasonable with 8.1:
>
> static integer(kind=4) C.2183 = 1;
> static integer(kind=4) C.2184 = 2;
> static integer(kind=4) C.2185 = 3;
> static integer(kind=4) C.2186 = 4;
> static integer(kind=4) C.2187 = 5;
> static integer(kind=4) C.2188 = 6;
> character(kind=1) str.0[20];
>
> doesntwork_p8 ((character(kind=1)[1:20] *) &str.0, 20, &c, &C.2183, &C.2184, &C.2185, &C.2186, &C.2187, &C.2188, 1);
Looking at the assembly, I see r3 is &str.0, r4 is 20, r5 is &c, and so on up
to r10 which is &C.2187. That's all good. The next arg, &C.2188 is stored on
the stack at 32(1). That's wrong. It should be 96(1), ie. leaving 64 bytes of
parameter save area. Similarly for the final "1", which is stored at 40(1)
instead of 104(1).
Debugging a little, it seems that the cause is that the fndecl found in
expand_call is missing args. These lines in expand_call
#ifdef REG_PARM_STACK_SPACE
reg_parm_stack_space = REG_PARM_STACK_SPACE (!fndecl ? fntype : fndecl);
#endif
then calculate 0 for reg_parm_stack_space, which is correct for the given bogus
fndecl.
<function_decl 0x7ffff68bd500 doesntwork_p8
type <function_type 0x7ffff68c1a80
type <void_type 0x7ffff67b1f18 void VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff67b1f18
pointer_to_this <pointer_type 0x7ffff67ba000>>
SI
size <integer_cst 0x7ffff67b60d8 constant 32>
unit-size <integer_cst 0x7ffff67b60f0 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff68c19d8
attributes <tree_list 0x7ffff68bcd70
purpose <identifier_node 0x7ffff6813a28 fn spec>
value <tree_list 0x7ffff68bcd48
value <string_cst 0x7ffff68b0bd0 constant ".wR">>>
arg-types <tree_list 0x7ffff68bcd20 value <reference_type
0x7ffff68c1930>
chain <tree_list 0x7ffff68bccf8 value <integer_type 0x7ffff67b1738
integer(kind=8)>
chain <tree_list 0x7ffff67b2168 value <void_type 0x7ffff67b1f18
void>>>>
pointer_to_this <pointer_type 0x7ffff68c1b28>>
addressable used public external SI /home/alan/src/tmp/pr87689_main.f:7:0
align:32 warn_if_not_align:0 context <translation_unit_decl 0x7ffff68be000
/home/alan/src/tmp/pr87689_main.f> chain <function_decl 0x7ffff68bd600 main>>
>From gcc-bugs-return-633222-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:54:17 2019
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89286] New: Intrinsic sign and GNU Extension
Date: Mon, 11 Feb 2019 14:54:00 -0000
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Bug ID: 89286
Summary: Intrinsic sign and GNU Extension
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
The GNU extension allows different kinds to used in the actual arguments to
DIM, MOD, MODULO, MAX and MIN. The description of the arguments for SIGN are
the same as for DIM, MOD and MODULO.
I asked on this e-mail thread
https://gcc.gnu.org/ml/fortran/2019-01/msg00301.html whether SIGN should also
be covered by the GNU extension. Specifically in
https://gcc.gnu.org/ml/fortran/2019-01/msg00303.html.
I think it should hence this PR.
Patch to follow.
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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--- Comment #1 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45657
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45657&action=edit
GNU extension to intrinsic SIGN
Includes change to Intrinsic documentation.
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Mon, 11 Feb 2019 14:57:00 -0000
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--- Comment #21 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Well, perhaps this is business as usual, but I'd still like to understand this
a little better.
What causes us to run the effective-target check for this thing in the first
place?
I've restricted my query with RUNTESTFLAGS to directories that contain
powerpc.exp. To my knowledge, there's nothing in any such directory that cares
about GPU offloading. So what causes the effective-target check?
I'm okay with closing this, but would very much like to understand if we have
an inefficiency here where we're running all sorts of checks that aren't needed
for the tests being run. Or if we have something wrong in powerpc.exp that is
causing this unnecessary effective-target check.
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--- Comment #10 from Alan Modra <amodra at gmail dot com> ---
Replying to comment #4, yes, the function decl is wrong. It should have the
full parameter list, or have none (ie. tree.c:prototype_p return false). The
powerpc ELFv2 ABI works fine with non-prototyped function calls, but not with
lying prototypes..
>From gcc-bugs-return-633226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 14:59:41 2019
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Subject: [Bug c++/89285] [8 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 14:59:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
CC| |dmalcolm at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |redi at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|ICE after casting the this |[8 Regression] ICE after
|pointer in the constructor |casting the this pointer in
|in C++17 mode |the constructor in C++17
| |mode
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This started to ICE with r259629 and stopped ICEing with r267272.
Not really sure if this is ice-on-invalid (and thus accepts-invalid) on the
trunk or just ice-on-valid on the branch, given the reinterpret_casts in the
constexpr body.
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Mon, 11 Feb 2019 15:02:00 -0000
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--- Comment #22 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
It also seems odd to me that all the other checks happen when reading
powerpc.exp, prior to running my tests, but this one happens late:
Running
/home/wschmidt/gcc/gcc-mainline-test2/gcc/testsuite/gcc.target/powerpc/powerpc.exp
...
[Test for linker_plugin]
[Test for vsx_hw_available]
Run my test
[Test for offload_gcn]
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45658
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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--- Comment #3 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45659
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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--- Comment #4 from MarkEggleston <mark.eggleston at codethink dot com> ---
Missed some changes that should've gone in the change log. These included a
couple of line that shouldn't have been there.
Fixing patch and change log and will replace attachments when done.
>From gcc-bugs-return-633231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 15:26:21 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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--- Comment #23 from Andrew Stubbs <ams at gcc dot gnu.org> ---
It's caused by the llvm_binutils check, which is used by pretty much every test
to determine whether to complain about blank lines in compile output, or not.
Right now the easiest way to determine if it's using that toolchain is to check
if the target is amdgcn (that being the only target that needs it). I suppose
llvm could also be detected by inspecting the --version output from
<target>-as, or some such.
Your configuration isn't to blame.
>From gcc-bugs-return-633232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 15:28:54 2019
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Subject: [Bug c++/89285] [8 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it's valid (but the constructor can't be used in a constant
expression).
>From gcc-bugs-return-633233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 15:45:00 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
CC| |jason at gcc dot gnu.org
Summary|[8 Regression] ICE after |[8/9 Regression] ICE after
|casting the this pointer in |casting the this pointer in
|the constructor in C++17 |the constructor in C++17
|mode |mode
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok, so:
struct A {
int a {};
};
struct B {
int b {};
constexpr B (A *x) {
int *c = &x->a;
while (*c)
c = reinterpret_cast<int *>((reinterpret_cast<char *>(c) + *c));
*c = reinterpret_cast<char *>(this) - reinterpret_cast<char *>(c);
}
};
struct C : A {
B bar {this};
};
constexpr C foo {};
would then be accepts-invalid.
I've tried to fix that by doing:
--- gcc/cp/cp-gimplify.c (revision 268765)
+++ gcc/cp/cp-gimplify.c (working copy)
@@ -2307,6 +2307,22 @@ cp_fold (tree x)
&& TREE_OVERFLOW_P (x) && !TREE_OVERFLOW_P (op0))
TREE_OVERFLOW (x) = false;
+ /* Preserve REINTERPRET_CAST_P. */
+ if (code == NOP_EXPR && REINTERPRET_CAST_P (org_x))
+ {
+ if (TREE_CODE (x) == NOP_EXPR && REINTERPRET_CAST_P (x))
+ break;
+ if (TREE_CODE (x) == NOP_EXPR)
+ {
+ x = copy_node (x);
+ REINTERPRET_CAST_P (x) = 1;
+ }
+ else
+ {
+ x = build1_loc (loc, code, TREE_TYPE (x), x);
+ REINTERPRET_CAST_P (x) = 1;
+ }
+ }
break;
case INDIRECT_REF:
and with that we reject the testcase again (like we've done in 8.x, so this
part is [9 Regression] accepts-invalid).
But that also means we ICE again on the:
C bar {};
So, maybe we want to ignore that:
if (REINTERPRET_CAST_P (t))
{
if (!ctx->quiet)
error_at (cp_expr_loc_or_loc (t, input_location),
"a reinterpret_cast is not a constant expression");
*non_constant_p = true;
return t;
}
for perhaps !ctx->manifestly_const_eval , as in when we really don't require
constant expression. But we don't really call constexpr with zero
manifestly_const_eval anyway.
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Mon, 11 Feb 2019 15:45:00 -0000
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--- Comment #24 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Why does this end up showing up after a test is run, rather than early like all
the other target-supports checks? It would be less surprising if it acted like
the others (and I would probably not have noticed to complain :).
>From gcc-bugs-return-633235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 15:48:41 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 15:48:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, I wonder if something isn't wrong with the r267272 commit, I'd have
thought that constexpr evaluation should be done on the pre-cp_folded bodies
and cp_fold could be removing REINTERPRET_CAST_Ps.
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 15:55:00 -0000
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--- Comment #16 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #14)
> Created attachment 45653 [details]
> Patch candidate
>
> Patch candidate that survives both reduced and not reduced test-cases.
> David does the patch make sense?
It survives regression tests and bootstrap on x86_64-linux-gnu.
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From: "raphael.kubo.da.costa at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89287] New: Array declaration fails to use template conversion operator
Date: Mon, 11 Feb 2019 16:30:00 -0000
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Bug ID: 89287
Summary: Array declaration fails to use template conversion
operator
Product: gcc
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(This is a reduction from a GCC + Chromium build issue)
Building the following excerpt with -std=gnu++14 causes GCC to fail, while
MSVC, clang and ICC work fine:
struct S {
template <class U>
constexpr operator U() const {
return static_cast<U>(42);
}
};
void frob() {
new char[S()];
}
x.cc: In function ‘void frob()’:
x.cc:9:14: error: default type conversion can't deduce template argument for
‘template<class U> constexpr S::operator U() const’
new char[S()];
^
C++14 says in 8.3.4 Arrays that "If the constant-expression (5.20) is present,
it shall be a converted constant expression of type std::size_t and its value
shall be greater than zero", so I was expecting `new char[S()]' to end up
invoking S::operator size_t().
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Subject: [Bug middle-end/88560] [9 Regression] armv8_2-fp16-move-1.c and related regressions after r266385
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--- Comment #15 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Mon Feb 11 16:54:18 2019
New Revision: 268772
URL: https://gcc.gnu.org/viewcvs?rev=268772&root=gcc&view=rev
Log:
Arm: Update tests after register allocation changes. (PR/target 88560)
After the register allocator changes of r268705 we need to update a few tests
with new output.
In all cases the compiler is now generating the expected code, since the tests
are all float16 testcases using a hard-floar abi, we expect that actual fp16
instructions are used rather than using integer loads and stores. Because of
we also save on some mov.f16s that were being emitted before to move between
the two.
The aapcs cases now match the f32 cases in using floating point operations.
gcc/testsuite/Changelog
PR middle-end/88560
* gcc.target/arm/armv8_2-fp16-move-1.c: Update assembler scans.
* gcc.target/arm/fp16-aapcs-1.c: Likewise.
* gcc.target/arm/fp16-aapcs-3.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/arm/armv8_2-fp16-move-1.c
trunk/gcc/testsuite/gcc.target/arm/fp16-aapcs-1.c
trunk/gcc/testsuite/gcc.target/arm/fp16-aapcs-3.c
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 17:12:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bisected that to the finish_id_expression change, reverting the penultimate and
antepenultimate hunk of
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/cp/semantics.c?limit_changes=0&r1=267272&r2=267271&pathrev=267272
makes gcc trunk reject the #c4 testcase again and ICE again with C bar {} which
should be valid. Ah, and likely that is the reason why the #c4 patch makes a
difference, previously it was just a REINTERPRET_CAST_P NOP_EXPR around
PARM_DECL, but now it is REINTERPRET_CAST_P NOP_EXPR around the location
wrapper nop and cp_fold optimizes that away.
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 17:17:00 -0000
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--- Comment #17 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Created attachment 45660
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45660&action=edit
Selftest coverage
The attached reproduces the problem via a minimal selftest, and is also fixed
by attachment 45653.
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 17:23:00 -0000
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--- Comment #18 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #15)
> During the bug investigation I noticed a strange thing in line-map.c:
>
> 700 if (line_delta < 0
> 701 || (line_delta > 10
> 702 && line_delta * map->m_column_and_range_bits > 1000)
> 703 || (max_column_hint >= (1U << effective_column_bits))
> 704 || (max_column_hint <= 80 && effective_column_bits >= 10)
> 705 || (highest > LINE_MAP_MAX_LOCATION_WITH_PACKED_RANGES
> 706 && map->m_range_bits > 0)
> 707 || (highest > LINE_MAP_MAX_LOCATION_WITH_COLS
> 708 && (set->max_column_hint || highest >=
> LINE_MAP_MAX_LOCATION)))
> 709 add_map = true;
>
> m_column_and_range_bits > 1000 is always false as:
>
> /* Number of the low-order source_location bits used for column numbers
> and ranges. */
> unsigned int m_column_and_range_bits : 8;
>
> and the sub-expression on lines 701 and 702 is ugly as well.
> What's the purpose of the check?
It's not:
m_column_and_range_bits > 1000
it's:
line_delta * map->m_column_and_range_bits > 1000
where line_delta is an int; presumably the 8 bits of the field get widened.
The purpose of the check is impose a limit on the size of the jumps that occur
within the location_t representation, so that if there's a big jump in line
numbers, we start a linemap, where big is "> 1000" within the location_t value.
The idea is to avoid wasting location_t values, without creating too many
linemap instances.
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Subject: [Bug c/89288] New: [9 Regression] ICE in tree_code_size, at tree.c:865
Date: Mon, 11 Feb 2019 17:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89288
Bug ID: 89288
Summary: [9 Regression] ICE in tree_code_size, at tree.c:865
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Changed between 20181118 and 20181125 :
$ cat z1.c
typedef int Assert [(__builtin_has_attribute (1, target("sse")) == 1)];
$ gcc-9-20190210 -c z1.c
z1.c:1:1: internal compiler error: in tree_code_size, at tree.c:865
1 | typedef int Assert [(__builtin_has_attribute (1, target("sse")) == 1)];
| ^~~~~~~
0xcbace1 tree_code_size(tree_code)
../../gcc/tree.c:865
0xcbae2c make_node(tree_code)
../../gcc/tree.c:1038
0xcbdd2b build_decl(unsigned int, tree_code, tree_node*, tree_node*)
../../gcc/tree.c:5023
0x692278 validate_attribute
../../gcc/c-family/c-attribs.c:4036
0x692278 has_attribute(unsigned int, tree_node*, tree_node*, tree_node*
(*)(tree_node*))
../../gcc/c-family/c-attribs.c:4069
0x61d28d c_parser_has_attribute_expression
../../gcc/c/c-parser.c:7665
0x61d28d c_parser_unary_expression
../../gcc/c/c-parser.c:7356
0x61d537 c_parser_cast_expression
../../gcc/c/c-parser.c:7222
0x61d7e3 c_parser_binary_expression
../../gcc/c/c-parser.c:7025
0x61e695 c_parser_conditional_expression
../../gcc/c/c-parser.c:6759
0x61ebe0 c_parser_expr_no_commas
../../gcc/c/c-parser.c:6676
0x61ee42 c_parser_expression
../../gcc/c/c-parser.c:9727
0x611c33 c_parser_postfix_expression
../../gcc/c/c-parser.c:8200
0x61c512 c_parser_unary_expression
../../gcc/c/c-parser.c:7380
0x61d537 c_parser_cast_expression
../../gcc/c/c-parser.c:7222
0x61d7e3 c_parser_binary_expression
../../gcc/c/c-parser.c:7025
0x61e695 c_parser_conditional_expression
../../gcc/c/c-parser.c:6759
0x61ebe0 c_parser_expr_no_commas
../../gcc/c/c-parser.c:6676
0x61b7c1 c_parser_direct_declarator_inner
../../gcc/c/c-parser.c:3844
0x62fbe1 c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:1999
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/80936] bcmp, bcopy, and bzero not declared nonnull
Date: Mon, 11 Feb 2019 17:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80936
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Resolution|INVALID |---
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
POSIX says this about bcopy:
For maximum portability, it is recommended to replace the function call to
bcopy() as follows:
#define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0)
GCC lowers bcopy calls to memmove (and similarly for other bxxx calls), which I
think makes it even more important that the non-null attribute be applied to
their declarations, to detect bugs due to legacy code making the assumption
that bcopy et al are null-safe (e.g., on a target where they really are).
$ cat t.c && gcc -O0 -S -Wall -fdump-tree-lower=/dev/stdout t.c
void f (void *d, const void *s, __SIZE_TYPE__ n)
{
__builtin_bcopy (s, 0, n);
}
;; Function f (f, funcdef_no=0, decl_uid=1908, cgraph_uid=1, symbol_order=0)
f (void * d, const void * s, long unsigned int n)
{
__builtin_memmove (0B, s, n);
return;
}
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 17:27:00 -0000
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--- Comment #19 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #17)
> Created attachment 45660 [details]
> Selftest coverage
>
> The attached reproduces the problem via a minimal selftest, and is also
> fixed by attachment 45653 [details].
Thanks for creating this patch. I like that it imposes an upper limit on the
value of a line number within an ordinary linemap relative to the line map's
starting line, but I wonder if that upper limit needs to be lower than the one
in your patch (e.g. what happens if the resulting location_t value hit limits
like LINE_MAP_MAX_LOCATION etc).
>From gcc-bugs-return-633245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 17:29:23 2019
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Subject: [Bug c/89289] New: ICE in extract_insn, at recog.c:2310
Date: Mon, 11 Feb 2019 17:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89289
Bug ID: 89289
Summary: ICE in extract_insn, at recog.c:2310
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A combination of __thread with option -mforce-indirect-call
and -fpic or -fPIC gives an ICE starting with early gcc-8
for pr24428, pr47715, pr68986 and others :
$ cat z1.c
extern __thread int a;
int f ()
{
return a;
}
$ gcc-9-20190210 -c z1.c -fpic
$ gcc-9-20190210 -c z1.c -fpic -mforce-indirect-call
z1.c: In function 'f':
z1.c:5:1: error: unrecognizable insn:
5 | }
| ^
(call_insn/u 5 2 6 2 (parallel [
(set (reg:DI 0 ax)
(call:DI (mem:QI (symbol_ref:DI ("__tls_get_addr")) [0 S1 A8])
(const_int 0 [0])))
(unspec:DI [
(symbol_ref:DI ("a") [flags 0x50] <var_decl 0x7f776e19eab0
a>)
(reg/f:DI 7 sp)
] UNSPEC_TLS_GD)
]) "z1.c":4:10 -1
(expr_list:REG_EH_REGION (const_int -2147483648 [0xffffffff80000000])
(nil))
(nil))
during RTL pass: vregs
z1.c:5:1: internal compiler error: in extract_insn, at recog.c:2310
0x5aa7c0 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.c:108
0x5aa7df _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/rtl-error.c:116
0xa020e7 extract_insn(rtx_insn*)
../../gcc/recog.c:2310
0x817525 instantiate_virtual_regs_in_insn
../../gcc/function.c:1654
0x817525 instantiate_virtual_regs
../../gcc/function.c:1975
0x817525 execute
../../gcc/function.c:2024
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87996] [8/9 Regression] "size of array is negative" error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX
Date: Mon, 11 Feb 2019 17:35:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Feb 11 17:35:17 2019
New Revision: 268774
URL: https://gcc.gnu.org/viewcvs?rev=268774&root=gcc&view=rev
Log:
PR c++/87996 - size of array is negative error when SIZE_MAX/2 < sizeof(array)
<= SIZE_MAX
gcc/ChangeLog:
PR c++/87996
* builtins.c (max_object_size): Move from here...
* builtins.h (max_object_size): ...and here...
* tree.c (max_object_size): ...to here...
* tree.h (max_object_size): ...and here.
gcc/c-family/ChangeLog:
PR c++/87996
* c-common.c (invalid_array_size_error): New function.
(valid_array_size_p): Call it. Handle size as well as type.
* c-common.h (valid_constant_size_p): New function.
(enum cst_size_error): New type.
gcc/cp/ChangeLog:
PR c++/87996
* decl.c (compute_array_index_type_loc): Preserve signed sizes
for diagnostics. Call valid_array_size_p instead of error.
* init.c (build_new_1): Compute size for diagnostic. Call
invalid_array_size_error
(build_new): Call valid_array_size_p instead of error.
gcc/testsuite/ChangeLog:
PR c++/87996
* c-c++-common/array-5.c: New test.
* c-c++-common/pr68107.c: Adjust text of diagnostics.
* g++.dg/init/new38.C: Same.
* g++.dg/init/new43.C: Same.
* g++.dg/init/new44.C: Same.
* g++.dg/init/new46.C: Same.
* g++.dg/other/large-size-array.C: Same.
* g++.dg/other/new-size-type.C: Same.
* g++.dg/template/array30.C: Same.
* g++.dg/template/array32.C: New test.
* g++.dg/template/dependent-name3.C: Adjust.
* gcc.dg/large-size-array-3.c: Same.
* gcc.dg/large-size-array-5.c: Same.
* gcc.dg/large-size-array.c: Same.
* g++.old-deja/g++.brendan/array1.C: Same.
* g++.old-deja/g++.mike/p6149.C: Same.
Added:
trunk/gcc/testsuite/c-c++-common/array-5.c
trunk/gcc/testsuite/g++.dg/template/array32.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/builtins.h
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/pr68107.c
trunk/gcc/testsuite/g++.dg/init/new38.C
trunk/gcc/testsuite/g++.dg/init/new43.C
trunk/gcc/testsuite/g++.dg/init/new44.C
trunk/gcc/testsuite/g++.dg/init/new46.C
trunk/gcc/testsuite/g++.dg/other/large-size-array.C
trunk/gcc/testsuite/g++.dg/other/new-size-type.C
trunk/gcc/testsuite/g++.dg/template/array30.C
trunk/gcc/testsuite/g++.dg/template/dependent-name3.C
trunk/gcc/testsuite/g++.dg/ubsan/pr81530.C
trunk/gcc/testsuite/g++.old-deja/g++.brendan/array1.C
trunk/gcc/testsuite/g++.old-deja/g++.mike/p6149.C
trunk/gcc/testsuite/gcc.dg/large-size-array-3.c
trunk/gcc/testsuite/gcc.dg/large-size-array-5.c
trunk/gcc/testsuite/gcc.dg/large-size-array.c
trunk/gcc/tree.c
trunk/gcc/tree.h
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89290] New: [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Mon, 11 Feb 2019 17:35:00 -0000
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Bug ID: 89290
Summary: [8/9 Regression] ICE in change_address_1, at
emit-rtl.c:2286
Product: gcc
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With options -O0 -mcmodel=large on x86_64-pc-linux-gnu :
$ cat pr56847.c
struct S { long int a, b; } e;
__thread struct S s;
void
foo (void)
{
s = e;
}
$ gcc-7 -c pr56847.c -O0 -mcmodel=large
$ gcc-9-20190210 -c pr56847.c -O2 -mcmodel=large
$ gcc-9-20190210 -c pr56847.c -O0
$
$ gcc-9-20190210 -c pr56847.c -O0 -mcmodel=large
during RTL pass: split2
pr56847.c: In function 'foo':
pr56847.c:8:1: internal compiler error: in change_address_1, at emit-rtl.c:2286
8 | }
| ^
0x7a18d0 change_address_1
../../gcc/emit-rtl.c:2286
0x7a4896 adjust_address_1(rtx_def*, machine_mode, poly_int<1u, long>, int, int,
int, poly_int<1u, long>)
../../gcc/emit-rtl.c:2420
0xd5c619 split_double_mode(machine_mode, rtx_def**, int, rtx_def**, rtx_def**)
../../gcc/config/i386/i386.c:18661
0xd5ca5b ix86_split_to_parts
../../gcc/config/i386/i386.c:25393
0xd671cd ix86_split_long_move(rtx_def**)
../../gcc/config/i386/i386.c:25483
0xf88d20 gen_split_8(rtx_insn*, rtx_def**)
../../gcc/config/i386/i386.md:2267
0x10ccd04 split_10
../../gcc/config/i386/i386.md:9883
0x112b377 split_insns(rtx_def*, rtx_insn*)
../../gcc/config/i386/i386.md:13184
0x7a6331 try_split(rtx_def*, rtx_insn*, int)
../../gcc/emit-rtl.c:3851
0xa00281 split_insn
../../gcc/recog.c:2901
0xa043a2 split_all_insns()
../../gcc/recog.c:3005
0xa044a8 execute
../../gcc/recog.c:3905
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Subject: [Bug c++/87996] [8 Regression] "size of array is negative" error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX
Date: Mon, 11 Feb 2019 17:36:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] "size of |[8 Regression] "size of
|array is negative" error |array is negative" error
|when SIZE_MAX/2 < |when SIZE_MAX/2 <
|sizeof(array) <= SIZE_MAX |sizeof(array) <= SIZE_MAX
Known to fail|9.0 |
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed via r268774 in GCC 9.0.
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Subject: [Bug c++/89287] Array declaration fails to use template conversion operator
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This doesn't seem to ever work with G++ (even 4.8 rejects it).
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Subject: [Bug target/89222] [7/8/9 regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
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--- Comment #7 from Wilco <wilco at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00780.html
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Subject: [Bug c++/89267] [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
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--- Comment #19 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Feb 11 17:44:05 2019
New Revision: 268775
URL: https://gcc.gnu.org/viewcvs?rev=268775&root=gcc&view=rev
Log:
PR tree-optimization/88771 - Misleading -Werror=array-bounds error
gcc/ChangeLog:
PR tree-optimization/88771
* gimple-ssa-warn-restrict.c (pass_wrestrict::gate): Also enable
when -Wstringop-overflow is set.
(builtin_memref::builtin_memref): Adjust excessive upper bound
only when lower bound is not excessive.
(maybe_diag_overlap): Detect and diagnose excessive bounds via
-Wstringop-ovefflow.
(maybe_diag_offset_bounds): Rename...
(maybe_diag_access_bounds): ...to this.
(check_bounds_or_overlap): Adjust for name change above.
gcc/testsuite/ChangeLog:
PR tree-optimization/88771
* gcc.dg/Wstringop-overflow-8.c: New test.
* gcc.dg/Wstringop-overflow-9.c: New test.
* gcc.dg/Warray-bounds-40.c: New test.
* gcc.dg/builtin-stpncpy.c: Adjust.
* gcc.dg/builtin-stringop-chk-4.c: Adjust.
* g++.dg/opt/memcpy1.C: Adjust.
Added:
trunk/gcc/testsuite/gcc.dg/Warray-bounds-40.c
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-8.c
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-warn-restrict.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/opt/memcpy1.C
trunk/gcc/testsuite/gcc.dg/builtin-stpncpy.c
trunk/gcc/testsuite/gcc.dg/builtin-stringop-chk-4.c
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |NEW
--- Comment #20 from Martin Sebor <msebor at gcc dot gnu.org> ---
The patch to make the warning less misleading has been committed in r268775.
With the test case from comment #0 cleaned up a bit, the warning looks like
this:
$ cat pr88771.c && gcc -O2 -S -Wall pr88771.c
int f (char *d, const char *s, int n)
{
int i = n + 1 ? n + 1 : 1;
__builtin_strncpy (d, s, n);
if (i)
return 1;
return 0;
}
pr88771.c: In function ‘f’:
pr88771.c:5:3: warning: ‘__builtin_strncpy’ specified bound
18446744073709551615 exceeds maximum object size 9223372036854775807
[-Wstringop-overflow=]
5 | __builtin_strncpy (d, s, n);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
It's interesting to note that the test after the (n + 1) addition relies on
signed integer overflow having wrapping semantics. With that invalid
assumption removed by making n's and i's type unsigned the warning is gone
because doing so prevents jump threading from inserting the additional strncpy
call. (But there are other, valid cases where the invalid call still is
introduced and the warning triggers.)
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Subject: [Bug c++/89267] [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Feb 11 17:57:41 2019
New Revision: 268776
URL: https://gcc.gnu.org/viewcvs?rev=268776&root=gcc&view=rev
Log:
PR c++/89267 - change of error location.
* pt.c (tsubst_copy_and_build): Do still clear expr location
for instantiated thunk calls.
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/pt.c
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Subject: [Bug c++/53181] static_assert sees as non constant the comparison between a constexpr and a template argument
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|6.0 |6.3.0, 7.3.0, 8.2.0, 9.0
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.
>From gcc-bugs-return-633256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 18:05:30 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 18:05:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, so one problem is that while we save the inline bodies of functions before
cp_fold_function, cp_fold_function is destructive and clobbers the saved copy.
cp_fold itself is (hopefully) not destructive and creates new trees, but
cp_fold_function is destructive and happily modifies the trees shared with
something else (in this case with the constexpr funcdef table).
One way out of this is throwing away cp_fold_r/cp_fold_function and teaching
cp_fold to handle all the trees that cp_walk_tree can walk (dunno if we want to
cache everything or not). That means handling e.g. STATEMENT_LIST, BIND_EXPR,
*_STMT etc.
Another possibility is to use cp_fold_r the way it is for non-constexpr
functions, and for constexpr functions use instead a hand written walker that
will handle everything that can appear in constexpr functions with copy on
write behavior, say if it is processing a STATEMENT_LIST and determines a
recursive call wants to fold one of the statements, unshare the whole
STATEMENT_LIST, modify it on the copy (and the parent would notice and unshare
etc.).
Yet another possibility is to use the inliner's copy_tree_body_r for this in
register_constexpr_fundef, but in a way that we don't create new decls. I'm
afraid it would still create new VLA types, can those appear in constexpr
functions?
Jason, any preferences here?
Note, the above would fix the [9 Regression] part of this PR, that we don't
reject that #c4 testcase. We'd still need to figure out a fix for the [8
Regression] part that once this [9 Regression] part is fixed would become [8/9
Regression]. I guess it could fix various other accepts-invalid cases where
the cp_folding which modifies the saved tree makes us accept invalid constexpr
code.
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Subject: [Bug c++/53036] [c++11] trivial class fails std::is_trivial test
Date: Mon, 11 Feb 2019 18:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|NEW |RESOLVED
CC| |msebor at gcc dot gnu.org
Known to work| |6.3.0, 7.4.0, 8.2.0, 9.0
Resolution|--- |FIXED
Known to fail| |4.7.4, 4.8.5, 4.9.4
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
This bug has been fixed since GCC 5. If there are outstanding issues as
comment #5 suggests that aren't being tracked by any open bugs let's open new
issues for them. I'm going to resolve this as fixed.
r215771 | jason | 2014-10-01 13:21:01 -0400 (Wed, 01 Oct 2014) | 11 lines
PR c++/63362
* class.c (type_has_non_user_provided_default_constructor): Rename
from type_has_user_provided_default_constructor, reverse sense.
(default_init_uninitialized_part, explain_non_literal_class): Adjust.
(check_bases_and_members): Set TYPE_HAS_COMPLEX_DFLT.
* call.c (build_new_method_call_1): Adjust.
* cp-tree.h: Adjust.
* decl.c (grok_special_member_properties): Don't set
TYPE_HAS_COMPLEX_DFLT.
* init.c (build_value_init_noctor): Don't use
type_has_user_provided_default_constructor.
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Mon, 11 Feb 2019 18:15:00 -0000
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--- Comment #14 from Wilco <wilco at gcc dot gnu.org> ---
Author: wilco
Date: Mon Feb 11 18:14:37 2019
New Revision: 268777
URL: https://gcc.gnu.org/viewcvs?rev=268777&root=gcc&view=rev
Log:
[COMMITTED] Fix pthread errors in pr86637-2.c
Fix test errors on targets which do not support pthreads.
Committed as obvious.
testsuite/
PR tree-optimization/86637
* gcc.c-torture/compile/pr86637-2.c: Test pthread and graphite target.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-2.c
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Subject: [Bug c++/89267] [8 Regression] FAIL: g++.dg/cpp1z/constexpr-lambda8.C (test for excess errors)
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libbacktrace/81983] libbacktrace calls bsearch with NULL base
Date: Mon, 11 Feb 2019 18:25:00 -0000
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--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
I would be inclined to just skip the bsearch when the count is zero.
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Subject: [Bug fortran/89291] New: internal compiler error: in gfc_trans_use_stmts
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Bug ID: 89291
Summary: internal compiler error: in gfc_trans_use_stmts
Product: gcc
Version: 7.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: walter.zwieflhofer at ineosteamuk dot com
Target Milestone: ---
Internal compiler error when compiling WRF 4.0.3 from NCAR
Standard compile of gcc 7.4.0
uname -a: Linux ws2bar 2.6.32-696.18.7.el6.x86_64 #1 SMP Thu Jan 4 17:31:22 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
Processor type: Intel(R) Xeon(R) CPU E5-2643 v2 @ 3.50GHz
Backtrace:
module_ra_rrtmg_lw.f90:7870:0:
use rrlw_tbl, only: ntbl, tblint, pade, bpade, tau_tbl, exp_tbl, tfn_tbl
internal compiler error: in gfc_trans_use_stmts, at fortran/trans-decl.c:4959
0x6bb88e gfc_trans_use_stmts
../../gcc-7.4.0-src/gcc/fortran/trans-decl.c:4958
0x6bbe92 gfc_generate_function_code(gfc_namespace*)
../../gcc-7.4.0-src/gcc/fortran/trans-decl.c:6528
0x69a0f9 gfc_generate_module_code(gfc_namespace*)
../../gcc-7.4.0-src/gcc/fortran/trans.c:2202
0x64f75b translate_all_program_units
../../gcc-7.4.0-src/gcc/fortran/parse.c:6062
0x64f75b gfc_parse_file()
../../gcc-7.4.0-src/gcc/fortran/parse.c:6275
0x692eaf gfc_be_parse_file
../../gcc-7.4.0-src/gcc/fortran/f95-lang.c:204
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
Possible code regression - see bug report 41062 from 13 Aug 2009
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Subject: [Bug middle-end/89288] [9 Regression] ICE in tree_code_size, at tree.c:865
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
4033 if (TYPE_P (oper))
4034 tmpdecl = build_decl (atloc, TYPE_DECL, tmpid, oper);
4035 else
4036 tmpdecl = build_decl (atloc, TREE_CODE (oper), tmpid, TREE_TYPE
(oper));
when oper is INTEGER_CST (or any expression other than TYPE_P or DECL_P) is not
going to work at all. Other issues:
/* An alias cannot be a defintion so declare the symbol extern. */
s/defintion/definition/
if (has_attribute (atloc, oper, attr, default_conversion))
result.value = boolean_true_node;
else
result.value = boolean_false_node;
too large whitespace between = and boolean.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89291
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-11
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Please provide a reproducer.
>From gcc-bugs-return-633264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 18:58:53 2019
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
Date: Mon, 11 Feb 2019 18:58:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-11
Ever confirmed|0 |1
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch should go to the fortran@gcc.gnu.org and gcc-patches@gcc.gnu.org mailing
lists for review.
>From a quick look at the patch it does seem that the extension is rejected when
compiling with -std=f*.
I don't see the need to add this extension (read: I am opposed to this
extension).
>From gcc-bugs-return-633265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:01:21 2019
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Subject: [Bug target/89289] ICE in extract_insn, at recog.c:2310
Date: Mon, 11 Feb 2019 19:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
CC| |ak at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, either we need to make the calls direct (that could be e.g. adding another
predicate and constraint similar to const_call_address_operand/Bz that wouldn't
check flag_force_indirect_call, or do what we do e.g. for -fpic -mcmodel=large
(but we don't have a got pointer), or add completely new patterns for TLS_GD/LD
models.
>From gcc-bugs-return-633266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:21:45 2019
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Subject: [Bug middle-end/89288] [9 Regression] ICE in tree_code_size, at tree.c:865
Date: Mon, 11 Feb 2019 19:21:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code, patch
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
Depends on| |88383
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The trivial patch for bug 88383 that you objected to for reasons unrelated to
the fix and that Jeff likewise declined to approve has a solution for this.
The fix is incomplete so it still ICEs on this test case but that's just a
small oversight. I have reposted the patch:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00793.html
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88383
[Bug 88383] ICE calling _builtin_has_attribute with an expression
>From gcc-bugs-return-633267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:24:47 2019
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Subject: [Bug middle-end/89292] New: [9 regression] test case gcc.target/powerpc/rs6000-fpint.c fails after r268705
Date: Mon, 11 Feb 2019 19:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89292
Bug ID: 89292
Summary: [9 regression] test case
gcc.target/powerpc/rs6000-fpint.c fails after r268705
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
Slightly different assembler is generated after r268705
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/rs6000-fpint.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -mno-powerpc-gfxopt -ffat-lto-objects -fno-ident -S
-o rs6000-fpint.s
PASS: gcc.target/powerpc/rs6000-fpint.c (test for excess errors)
FAIL: gcc.target/powerpc/rs6000-fpint.c scan-assembler-not stfiwx
Executing on host: /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/ vmx_hw_available72259.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -mno-vsx -lm -o vmx_hw_available72259.exe
(timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/ vmx_hw_available72259.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -mno-vsx -lm -o vmx_hw_available72259.exe
Setting LD_LIBRARY_PATH to
:/home/seurer/gcc/build/gcc-test2/gcc::/home/seurer/gcc/build/gcc-test2/gcc:/home/seurer/gcc/build/gcc-test2/./gmp/.libs:/home/seurer/gcc/build/gcc-test2/./prev-gmp/.libs:/home/seurer/gcc/build/gcc-test2/./mpfr/src/.libs:/home/seurer/gcc/build/gcc-test2/./prev-mpfr/src/.libs:/home/seurer/gcc/build/gcc-test2/./mpc/src/.libs:/home/seurer/gcc/build/gcc-test2/./prev-mpc/src/.libs:/home/seurer/gcc/build/gcc-test2/./isl/.libs:/home/seurer/gcc/build/gcc-test2/./prev-isl/.libs:/home/seurer/gcc/install/gcc-7.2.0/lib64
Execution timeout is: 300
spawn [open ...]
testcase
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/powerpc.exp
completed in 0 seconds
=== gcc Summary ===
# of expected passes 1
# of unexpected failures 1
Comparing the assembler before and after the change:
24,25c24,25
< mfvsrwz 9,0
< stw 9,48(31)
---
> addi 9,31,48
> stfiwx 0,0,9
28,29c28,29
< mfvsrwz 9,0
< stw 9,52(31)
---
> addi 9,31,52
> stfiwx 0,0,9
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Mon, 11 Feb 2019 19:39:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that adjust_address with
(mem/c:TI (const:DI (unspec:DI [
(symbol_ref:DI ("s") [flags 0x2a] <var_decl 0x7ffff7ffbb40 s>)
] UNSPEC_NTPOFF)) [1 s+0 S16 A64 AS1])
as first argument, E_DImode and 8 as last two doesn't validate.
We have originally:
(insn 7 6 10 2 (set (mem/c:TI (plus:DI (unspec:DI [
(const_int 0 [0])
] UNSPEC_TP)
(const:DI (unspec:DI [
(symbol_ref:DI ("s") [flags 0x2a] <var_decl
0x7ff97a130b40 s>)
] UNSPEC_NTPOFF))) [1 s+0 S16 A64])
(reg:TI 83)) "pr89290.c":7:5 65 {*movti_internal}
(nil))
then the ix86_rewrite_tls_address splitter rewrites this into:
(insn 12 6 10 2 (set (mem/c:TI (const:DI (unspec:DI [
(symbol_ref:DI ("s") [flags 0x2a] <var_decl
0x7ff97a130b40 s>)
] UNSPEC_NTPOFF)) [1 s+0 S16 A64 AS1])
(reg:TI 83)) "pr89290.c":7:5 -1
(nil))
and finally we ICE in the split_double_move splitter.
>From gcc-bugs-return-633270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:39:59 2019
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
CC| |uros at gcc dot gnu.org
Target Milestone|--- |8.3
Ever confirmed|0 |1
>From gcc-bugs-return-633268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:39:19 2019
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From: "walter.zwieflhofer at ineosteamuk dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89291] internal compiler error: in gfc_trans_use_stmts
Date: Mon, 11 Feb 2019 19:39:00 -0000
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--- Comment #2 from zwieflhofer <walter.zwieflhofer at ineosteamuk dot com> ---
Installed gcc-5.5.0 and built the identical WRF version.
No ICE encountered with 5.5.0.
Attempted to extract a reduced test version but this is non-trivial due to the
large source code base and complex make files. I am happy for now that 5.5.0
gives me a working solution. I tried the reproducer attached to bug report
41062 but that one compiled fine under 7.4.0.
Please regard this bug report as a courtesy rather than a request for action
and feel free to close it due to the missing reproducer.
Alternatively, I can forward this report to NCAR to see whether there is any
interest in pre-emptive investigations as part of their regression testing.
Many thanks for the prompt reply.
>From gcc-bugs-return-633271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 19:55:06 2019
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Mon, 11 Feb 2019 19:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88147
--- Comment #20 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #19)
> (In reply to David Malcolm from comment #17)
> > Created attachment 45660 [details]
> > Selftest coverage
> >
> > The attached reproduces the problem via a minimal selftest, and is also
> > fixed by attachment 45653 [details].
>
> Thanks for creating this patch. I like that it imposes an upper limit on
> the value of a line number within an ordinary linemap relative to the line
> map's starting line, but I wonder if that upper limit needs to be lower than
> the one in your patch (e.g. what happens if the resulting location_t value
> hit limits like LINE_MAP_MAX_LOCATION etc).
I constructed a selftest that does that, but it doesn't lead to corrupt
location_t values: it hits this check, and returns 0 (aka UNKNOWN_LOCATION):
771 /* Locations of ordinary tokens are always lower than locations of
772 macro tokens. */
773 if (r >= LINE_MAP_MAX_LOCATION)
774 return 0;
So I think your fix is the one we should use. I'm testing a combined patch
with your fix + my selftest.
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Subject: [Bug c++/88977] __builtin_is_constant_evaluated() as function template argument causes substitution failure
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88977
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 11 20:00:16 2019
New Revision: 268780
URL: https://gcc.gnu.org/viewcvs?rev=268780&root=gcc&view=rev
Log:
PR c++/88977
* pt.c (convert_nontype_argument): Pass true as manifestly_const_eval
to maybe_constant_value calls.
* g++.dg/cpp2a/is-constant-evaluated7.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/is-constant-evaluated7.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Mon, 11 Feb 2019 20:04:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Feb 11 20:03:43 2019
New Revision: 268781
URL: https://gcc.gnu.org/viewcvs?rev=268781&root=gcc&view=rev
Log:
PR c++/89212 - ICE converting nullptr to pointer-to-member-function.
* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Return early for
null member pointer value.
* g++.dg/cpp0x/nullptr40.C: New test.
* g++.dg/cpp0x/nullptr41.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/nullptr40.C
trunk/gcc/testsuite/g++.dg/cpp0x/nullptr41.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88977] __builtin_is_constant_evaluated() as function template argument causes substitution failure
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89212] [8 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Mon, 11 Feb 2019 20:05:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|fold_convert_loc at |fold_convert_loc at
|fold-const.c:2552 |fold-const.c:2552
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug middle-end/89292] [9 regression] test case gcc.target/powerpc/rs6000-fpint.c fails after r268705
Date: Mon, 11 Feb 2019 20:09:00 -0000
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--- Comment #1 from seurer at gcc dot gnu.org ---
gcc.target/powerpc/vsx-simode2.c also fails after this revision:
# of expected passes 2
# of unexpected failures 1
FAIL: gcc.target/powerpc/vsx-simode2.c scan-assembler mtvsrwz
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Subject: [Bug d/89293] New: libphobos: core.atomic should have fallback for no atomic library
Date: Mon, 11 Feb 2019 20:28:00 -0000
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Bug ID: 89293
Summary: libphobos: core.atomic should have fallback for no
atomic library
Product: gcc
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Currently there's a static assert that fails if GNU_Have_LibAtomic is false.
In the absence of atomics, a statically allocated core.sync.mutex.Mutex could
be used instead to lock/unlock between operations, making sure there's no risk
of using it before D runtime has been initialized.
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Subject: [Bug c++/58074] [C++11][DR 1333] __is_trivial intrinsic fails for deleted members and for non-trivial copy-c'tors
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Daniel Krügler from comment #0)
> The deleted default constructor should not prevent type Trivial of being
> trivial (Maybe this part of the problem is related to bug 52707, but I'm not
> sure).
I think DR 1363 changed that (and DR 1496 reconfirmed it) so the first test is
wrong. But G++ now passes that assertion, so that's also wrong (that is Bug
85723 though).
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Mon, 11 Feb 2019 20:51:00 -0000
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--- Comment #8 from Harald Anlauf <anlauf at gmx dot de> ---
It's not as trivial as I had hoped.
The point is that gfc_element_size() and gfc_target_expr_size()
are returning size 0 for the source expression, which is an entirely
correct value. However, they also return value 0 also for cases
where the sizes could not be determined to be a constant.
I have a 'half-patch' that tries to change gfc_target_expr_size()
to return a bool which is true for success and false for failure,
and then deal with this return value.
It seems that this also needs to be done for gfc_element_size().
However, there is this occurrence in class.c of gfc_element_size():
/* Build a minimal expression to make use of
target-memory.c/gfc_element_size for 'size'. Special handling
for character arrays, that are not constant sized: to support
len (str) * kind, only the kind information is stored in the
vtab. */
e = gfc_get_expr ();
e->ts = *ts;
e->expr_type = EXPR_VARIABLE;
c->initializer = gfc_get_int_expr (gfc_size_kind,
NULL,
ts->type == BT_CHARACTER
? ts->kind
: gfc_element_size (e));
I am not yet sure how to safely rewrite this.
>From gcc-bugs-return-633280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 20:52:54 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85723] [C++17][DR 1496] __is_trivial intrinsic fails with no trivial non-deleted default c'tor
Date: Mon, 11 Feb 2019 20:52:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-11
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=53036
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed.
We also don't yet implement the earlier change to that wording, from
https://wg21.link/cwg1363
struct A {
A() = default;
A(int i = 0) { }
};
static_assert(!__is_trivial(A), "");
This fails because G++ considers the class trivial, even though
default-initialization would fail as ambiguous.
>From gcc-bugs-return-633281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 20:53:32 2019
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Subject: [Bug c++/53036] [c++11] trivial class fails std::is_trivial test
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Bug 85723 deals with the problem mentioned in comment 5.
>From gcc-bugs-return-633282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 20:55:12 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 20:55:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'll try to copy & adjust (mostly kill almost everything) copy_tree_body_r and
use that in register_constexpr_fundef. As we don't need to remap decls or
types,
I think we just need copy_statement_list for STATEMENT_LIST, remap_save_expr
for SAVE_EXPR/TARGET_EXPR, copy_tree_r for the rest?
>From gcc-bugs-return-633283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 21:05:48 2019
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Subject: [Bug fortran/84135] [8/9 Regression] ICE in gfc_trans_array_cobounds, at fortran/trans-array.c:6033
Date: Mon, 11 Feb 2019 21:05:00 -0000
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
$ cat z1.f90
> program p
> integer :: i
> integer, dimension(3) :: x[2,*]
> data (x(i:i+2:i+1), i=1,2) /1,2,3/
This should be caught, there is no normal dimension
here, just a codimension.
>From gcc-bugs-return-633284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 21:06:48 2019
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Subject: [Bug c/66970] Add __has_builtin() macro
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |msebor at gcc dot gnu.org
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--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> ---
Let me look into this request for GCC 10.
>From gcc-bugs-return-633285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 11 21:19:41 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 11 Feb 2019 21:19:00 -0000
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> + /* Preserve REINTERPRET_CAST_P. */
> + if (code == NOP_EXPR && REINTERPRET_CAST_P (org_x))
> + {
> + if (TREE_CODE (x) == NOP_EXPR && REINTERPRET_CAST_P (x))
> + break;
> + if (TREE_CODE (x) == NOP_EXPR)
> + {
> + x = copy_node (x);
> + REINTERPRET_CAST_P (x) = 1;
> + }
> + else
> + {
> + x = build1_loc (loc, code, TREE_TYPE (x), x);
> + REINTERPRET_CAST_P (x) = 1;
> + }
> + }
> break;
Looks good, though can't we assume that if x != org_x it's a new NOP_EXPR so we
can just set REINTERPRET_CAST_P?
> and with that we reject the testcase again (like we've done in 8.x, so this
> part is [9 Regression] accepts-invalid).
> But that also means we ICE again on the:
> C bar {};
I'm not seeing this.
> So, maybe we want to ignore that:
> if (REINTERPRET_CAST_P (t))
> {
> if (!ctx->quiet)
> error_at (cp_expr_loc_or_loc (t, input_location),
> "a reinterpret_cast is not a constant expression");
> *non_constant_p = true;
> return t;
> }
> for perhaps !ctx->manifestly_const_eval , as in when we really don't require
> constant expression.
That should depend on ctx->strict, not manifestly_const_eval.
(In reply to Jakub Jelinek from comment #7)
> Ah, so one problem is that while we save the inline bodies of functions
> before cp_fold_function, cp_fold_function is destructive and clobbers the
> saved copy.
> cp_fold itself is (hopefully) not destructive and creates new trees, but
> cp_fold_function is destructive and happily modifies the trees shared with
> something else (in this case with the constexpr funcdef table).
>
> Jason, any preferences here?
My theory has been to switch to saving pre-gimplification bodies of constexpr
functions and doing constant evaluation using them.
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Subject: [Bug middle-end/89294] New: [9 regression] ICE in valid_constant_size_p, at tree.c:7524
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Bug ID: 89294
Summary: [9 regression] ICE in valid_constant_size_p, at
tree.c:7524
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Host: i386-pc-solaris2.11
Target: i386-pc-solaris2.11
Build: i386-pc-solaris2.11
Between 20190210 (r268749) and 20190211 (r268774), a couple of Ada testcases
regressed on Solaris/x86 (both 32 and 64-bit):
+FAIL: gnat.dg/vect1.adb (test for excess errors)
+FAIL: gnat.dg/vect1.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect1.adb scan-tree-dump-times vect "vectorized 1 loops"
15
+FAIL: gnat.dg/vect2.adb (test for excess errors)
+FAIL: gnat.dg/vect2.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect2.adb scan-tree-dump-times vect "vectorized 1 loops"
15
+FAIL: gnat.dg/vect3.adb (test for excess errors)
+FAIL: gnat.dg/vect3.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect3.adb scan-tree-dump-times vect "vectorized 1 loops"
15
+FAIL: gnat.dg/vect4.adb (test for excess errors)
+FAIL: gnat.dg/vect4.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect4.adb scan-tree-dump-times vect "vectorized 1 loops"
15
+FAIL: gnat.dg/vect5.adb (test for excess errors)
+FAIL: gnat.dg/vect5.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect5.adb scan-tree-dump-times vect "vectorized 1 loops"
15
+FAIL: gnat.dg/vect6.adb (test for excess errors)
+FAIL: gnat.dg/vect6.adb 3 blank line(s) in output
+UNRESOLVED: gnat.dg/vect6.adb scan-tree-dump-times vect "vectorized 1 loops"
15
FAIL: gnat.dg/vect2.adb 3 blank line(s) in output
FAIL: gnat.dg/vect2.adb (test for excess errors)
Excess errors:
+===========================GNAT BUG DETECTED==============================+
| 9.0.1 20190211 (experimental) [trunk revision 268774] (i386-pc-solaris2.11)
GCC error:|
| tree check: expected class 'constant', have 'binary' (mult_expr) in |
| valid_constant_size_p, at tree.c:7524 |
| Error detected at vect2.ads:24:51
I'm not seeing this failure on sparc-sun-solaris2.11.
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----------------------------------------------------------------------------
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug middle-end/89292] [9 regression] test case gcc.target/powerpc/rs6000-fpint.c fails after r268705
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--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
So, dup of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89271?
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|i386-pc-solaris2.11 |i386-pc-solaris2.11,
| |x86_64-pc-linux-gnu
Host|i386-pc-solaris2.11 |i386-pc-solaris2.11,
| |x86_64-pc-linux-gnu
Build|i386-pc-solaris2.11 |i386-pc-solaris2.11,
| |x86_64-pc-linux-gnu
--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Seeing the same on Linux/x86_64.
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Subject: [Bug c++/88752] [8 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Feb 11 21:49:37 2019
New Revision: 268783
URL: https://gcc.gnu.org/viewcvs?rev=268783&root=gcc&view=rev
Log:
Revert " PR c++/88752 - ICE with lambda and constexpr if."
This reverts commit 2a97dfc988a695e44f759099f74e4a18c01fa9a5.
Removed:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1z/constexpr-if26.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/cp-tree.h
branches/gcc-8-branch/gcc/cp/pt.c
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Subject: [Bug fortran/88299] [F18] COMMON in a legacy module produces bogus warnings in dependent code
Date: Mon, 11 Feb 2019 21:57:00 -0000
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
I'm currently regtesting the following patch:
Index: gcc/fortran/resolve.c
===================================================================
--- gcc/fortran/resolve.c (revision 268778)
+++ gcc/fortran/resolve.c (working copy)
@@ -940,7 +940,11 @@
have been ignored to continue parsing.
We do the checks again here. */
if (!csym->attr.use_assoc)
- gfc_add_in_common (&csym->attr, csym->name, &common_block->where);
+ {
+ gfc_add_in_common (&csym->attr, csym->name, &common_block->where);
+ gfc_notify_std (GFC_STD_F2018_OBS, "COMMON block at %L",
+ &common_block->where);
+ }
if (csym->value || csym->attr.data)
{
@@ -998,10 +1002,6 @@
resolve_common_vars (common_root->n.common, true);
- if (!gfc_notify_std (GFC_STD_F2018_OBS, "COMMON block at %L",
- &common_root->n.common->where))
- return;
-
/* The common name is a global name - in Fortran 2003 also if it has a
C binding name, since Fortran 2008 only the C binding name is a global
identifier. */
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Subject: [Bug tree-optimization/85762] [8/9 Regression] range-v3 abstraction overhead not optimized away
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--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
My apologies, I forgot about this bug. I will have a look this week.
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Subject: [Bug tree-optimization/42970] Missed unused function return value elimination
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I have posted a WIP patch as:
https://gcc.gnu.org/ml/gcc-patches/2018-12/msg01765.html
I am in the process of cleaning it up for final submission once stage 1 opens
again.
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
Patch passed regtesting and was submitted:
https://gcc.gnu.org/ml/fortran/2019-02/msg00097.html
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Subject: [Bug c++/86252] Abstract class in function return type
Date: Mon, 11 Feb 2019 22:29:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug c++/86252] Abstract class in function return type
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Another testcase, reduced from Boost.Rational:
template<typename T>
struct sfinae
{
static const bool value = false;
static T zero() { return T(); }
};
template<bool, typename T = void>
struct enable_if { typedef T type; };
template<typename T> struct enable_if<false, T> { };
struct Abstract {
virtual void f() = 0;
};
struct X {
template<typename T>
X(const T&, typename enable_if<sfinae<T>::value>::type* = 0)
{ }
};
Abstract* a();
int f(const Abstract&);
void f(X);
int i = f(*a());
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Feb 11 23:05:16 2019
New Revision: 268784
URL: https://gcc.gnu.org/viewcvs?rev=268784&root=gcc&view=rev
Log:
PR c++/89241 - ICE with __func__ in lambda in template.
When we're instantiating a generic lambda, its enclosing context will
have already been instantiated, so we need to look for that as well.
* pt.c (enclosing_instantiation_of): Also check
instantiated_lambda_fn_p for the template context.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-func1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89144] [9 Regression] GCC emits undefined references when a constexpr initializer_list appears in a template function
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Jason Merrill <jason at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/89295] New: [9 regression] compilation of gcc.dg-struct-layout-1/t001_x.c takes 30 times as long after r268404
Date: Mon, 11 Feb 2019 23:14:00 -0000
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Bug ID: 89295
Summary: [9 regression] compilation of
gcc.dg-struct-layout-1/t001_x.c takes 30 times as long
after r268404
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
Executing on host: /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
-B/home/seurer/gcc/build/gcc-trunk/gcc/ -fno-diagnostics-show-caret
-fno-diagnostics-show-line-numbers -fdiagnostics-color=never -w
-I/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/compat -Wno-abi -c -o
c_compat_x_tst.o
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gcc5/gcc.dg-struct-layout-1//t001_x.c
(timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
-B/home/seurer/gcc/build/gcc-trunk/gcc/ -fno-diagnostics-show-caret
-fno-diagnostics-show-line-numbers -fdiagnostics-color=never -w
-I/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/compat -Wno-abi -c -o
c_compat_x_tst.o
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gcc5/gcc.dg-struct-layout-1//t001_x.c
WARNING: program timed out
compiler exited with status 1
FAIL: tmpdir-gcc.dg-struct-layout-1/t001 c_compat_x_tst.o compile
I started noticing this occasional timeout issue with this test case recently
on some of our test machines. Note that the timeout value is 300 seconds when
run during a make check.
Trying the same test with some older revisions showed (when it is compiled
alone) that the compilation finishes in about 2s. With recent revisions it
takes 60+s.
This may not be the only test that slows down of course. "make -k check-gcc
RUNTESTFLAGS=struct-layout-1.exp" which runs many tests including the above
test takes about 4m30s at r268403 and about 7m at r268404.
Looking at the ftime-report outputs the big differences are in LRA
Before:
LRA non-specific : 0.25 ( 10%) 0.01 ( 4%) 0.24 ( 9%)
4168 kB ( 5%)
LRA virtuals elimination : 0.03 ( 1%) 0.00 ( 0%) 0.05 ( 2%)
355 kB ( 0%)
LRA reload inheritance : 0.03 ( 1%) 0.00 ( 0%) 0.03 ( 1%)
1618 kB ( 2%)
LRA create live ranges : 0.04 ( 2%) 0.00 ( 0%) 0.04 ( 1%)
538 kB ( 1%)
LRA hard reg assignment : 0.07 ( 3%) 0.00 ( 0%) 0.06 ( 2%)
0 kB ( 0%)
After:
LRA non-specific : 7.34 ( 12%) 0.04 ( 9%) 7.59 ( 13%)
14335 kB ( 13%)
LRA virtuals elimination : 26.07 ( 43%) 0.06 ( 13%) 25.26 ( 42%)
3613 kB ( 3%)
LRA reload inheritance : 0.04 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
1618 kB ( 2%)
LRA create live ranges : 16.84 ( 28%) 0.06 ( 13%) 17.30 ( 29%)
1735 kB ( 2%)
LRA hard reg assignment : 7.53 ( 13%) 0.02 ( 4%) 7.72 ( 13%)
0 kB ( 0%)
Note: I tried this on x86 and did not see the same slowdown between r268403
and r268404.
The trigger revision was
------------------------------------------------------------------------
r268404 | vmakarov | 2019-01-30 15:49:23 -0600 (Wed, 30 Jan 2019) | 12 lines
2019-01-30 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87246
* lra-constraints.c (simplify_operand_subreg): Reload memory
in subreg if the address became invalid.
2019-01-30 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87246
* gcc.target/i386/pr87246.c: New.
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Tue, 12 Feb 2019 00:47:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is due to r268774 introducing the assumption that the
valid_constant_size_p() argument is a constant expression.
I got a new machine recently and apparently didn't install Gnat properly, so
wasn't building it despite configuring with --enable-languages=all. I think
the Fedora instructions for Ada are wrong:
https://fedoraproject.org/wiki/Features/Ada_developer_tools.
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Tue, 12 Feb 2019 01:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88147
--- Comment #21 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Tue Feb 12 01:09:31 2019
New Revision: 268789
URL: https://gcc.gnu.org/viewcvs?rev=268789&root=gcc&view=rev
Log:
linemap_line_start: protect against location_t overflow (PR lto/88147)
PR lto/88147 reports an assertion failure due to a bogus location_t value
when adding a line to a pre-existing line map, when there's a large
difference between the two line numbers.
For some "large differences", this leads to a location_t value that exceeds
LINE_MAP_MAX_LOCATION, in which case linemap_line_start returns 0. This
isn't ideal, but at least should lead to safe degradation of location
information.
However, if the difference is very large, it's possible for the line
number offset (relative to the start of the map) to be sufficiently large
that overflow occurs when left-shifted by the column-bits, and hence
the check against the LINE_MAP_MAX_LOCATION limit fails, leading to
a seemingly-valid location_t value, but encoding the wrong location. This
triggers the assertion failure:
linemap_assert (SOURCE_LINE (map, r) == to_line);
The fix (thanks to Martin) is to check for overflow when determining
whether to reuse an existing map, and to not reuse it if it would occur.
gcc/ChangeLog: David Malcolm <dmalcolm@redhat.com>
PR lto/88147
* input.c (selftest::test_line_offset_overflow): New selftest.
(selftest::input_c_tests): Call it.
libcpp/ChangeLog: Martin Liska <mliska@suse.cz>
PR lto/88147
* line-map.c (linemap_line_start): Don't reuse the existing line
map if the line offset is sufficiently large to cause overflow
when computing location_t values.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/input.c
trunk/libcpp/ChangeLog
trunk/libcpp/line-map.c
>From gcc-bugs-return-633304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 01:14:35 2019
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Tue, 12 Feb 2019 01:14:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #22 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed by r268789.
>From gcc-bugs-return-633305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 01:14:45 2019
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Tue, 12 Feb 2019 01:14:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00857.html
>From gcc-bugs-return-633306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 02:15:59 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 02:15:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Memory corruption on Power |PowerPC64 ELFv2 function
|8 |parameter passing violation
--- Comment #11 from Alan Modra <amodra at gmail dot com> ---
This patch avoids the failure. Be warned, I shouldn't be let loose anywhere
near the gcc fortran support. I'm just presenting it in the hope that someone
who does know what they're doing can develop a proper fix.
--- a/gcc/fortran/trans-types.c
+++ b/gcc/fortran/trans-types.c
@@ -3092,8 +3092,7 @@ gfc_get_function_type (gfc_symbol * sym)
}
}
- if (!vec_safe_is_empty (typelist)
- || sym->attr.is_main_program
+ if (sym->attr.is_main_program
|| sym->attr.if_source != IFSRC_UNKNOWN)
is_varargs = false;
>From gcc-bugs-return-633307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 02:16:00 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Tue, 12 Feb 2019 02:15:00 -0000
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--- Comment #5 from Paul Hua <paul.hua.gm at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> Can you please recheck with current trunk, many RA improvements related to
> r265398 change went into trunk since then.
all those test still fails on trunk.
>From gcc-bugs-return-633308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 03:17:40 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 03:17:00 -0000
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--- Comment #12 from Alan Modra <amodra at gmail dot com> ---
A little more sophisticated.
* fortran/trans-types.c (gfc_get_function_type): Use a varargs decl
unless we have args other than hidden ones.
--- a/gcc/fortran/trans-types.c
+++ b/gcc/fortran/trans-types.c
@@ -3066,6 +3066,7 @@ gfc_get_function_type (gfc_symbol * sym)
actual parameters for a dummy procedure. */
vec_safe_push (typelist, type);
+ is_varargs = false;
}
else
{
@@ -3092,8 +3093,7 @@ gfc_get_function_type (gfc_symbol * sym)
}
}
- if (!vec_safe_is_empty (typelist)
- || sym->attr.is_main_program
+ if (sym->attr.is_main_program
|| sym->attr.if_source != IFSRC_UNKNOWN)
is_varargs = false;
>From gcc-bugs-return-633309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 04:32:23 2019
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Subject: [Bug target/84626] powerpc toc register is reloaded unnecessarily
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Alan Modra <amodra at gmail dot com> changed:
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----------------------------------------------------------------------------
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CC| |amodra at gmail dot com
Resolution|--- |INVALID
--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
No, the r2 load can't be moved. The ppc64 ABIs say the restore of r2 must
occur immediately after the call. This is necessary for exception unwinding.
>From gcc-bugs-return-633310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 04:42:08 2019
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Subject: [Bug middle-end/63793] -mcmodel=medium in gfortran on x86_64 emits references that are RIP relative (instead of using the GOT)
Date: Tue, 12 Feb 2019 04:42:00 -0000
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--- Comment #20 from Eric Gallager <egallager at gcc dot gnu.org> ---
Should this really have the middle-end for its component? It seems like this is
more of a target issue...
>From gcc-bugs-return-633311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 04:57:40 2019
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Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
anyone know where/how I'd find out what the real limit is for Darwin's libc?
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
Date: Tue, 12 Feb 2019 06:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88834
--- Comment #3 from kugan at gcc dot gnu.org ---
I added iv-use for MASKED_LOAD_LANE and the result is
cmp w3, 0
ble .L1
sub w5, w3, #1
mov x4, 0
lsr w5, w5, 1
add w5, w5, 1
whilelo p0.s, xzr, x5
.p2align 3,,7
.L3:
lsl x3, x4, 3
incw x4
add x7, x1, x3
add x6, x2, x3
ld2w {z4.s - z5.s}, p0/z, [x7]
ld2w {z2.s - z3.s}, p0/z, [x6]
add x3, x0, x3
add z0.s, z4.s, z2.s
sub z1.s, z5.s, z3.s
st2w {z0.s - z1.s}, p0, [x3]
whilelo p0.s, x4, x5
bne .L3
.L1:
ret
No base plus scaled index addressing mode. This is because in ivopt
When called from ivopt:
Breakpoint 4, aarch64_classify_address (info=0x7fffffffcba0, x=0x7ffff6c44f30,
mode=E_DImode, strict_p=false, type=ADDR_QUERY_M)
at
/home/kugan/work/abe/snapshots/gcc.git~origin~aarch64~sve-acle-branch/gcc/config/aarch64/aarch64.c:5689
5689 {
(gdb) p debug_rtx (x)
(plus:DI (mult:DI (reg:DI 91)
(const_int 8 [0x8]))
(reg:DI 90))
it accepts it.
When in cfgexpand:
Breakpoint 5, aarch64_classify_address (info=0x7fffffffcca0, x=0x7ffff6c5b840,
mode=E_VNx8SImode, strict_p=false, type=ADDR_QUERY_M)
at
/home/kugan/work/abe/snapshots/gcc.git~origin~aarch64~sve-acle-branch/gcc/config/aarch64/aarch64.c:5689
5689 {
(gdb) p debug_rtx (x)
(plus:DI (mult:DI (reg:DI 92 [ ivtmp_28 ])
(const_int 8 [0x8]))
(reg/v/f:DI 110 [ y ]))
This is not accepted because of aarch64_classify_index (info, op1, mode,
strict_p) failing (as it should).
Note the difference in mode for aarch64_classify_address. Not sure if this is
because of the way my patch changes ivopt.
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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--- Comment #4 from kugan at gcc dot gnu.org ---
Created attachment 45661
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45661&action=edit
ivopt patch v1
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Subject: [Bug tree-optimization/89296] New: tree copy-header masking uninitialized warning
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Bug ID: 89296
Summary: tree copy-header masking uninitialized warning
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void test_func(void) {
int loop; // uninitialized and "garbage"
while (!loop) {
loop = get_a_value(); // <- must be for this test
printk("...");
}
}
from Linaro bug report https://bugs.linaro.org/show_bug.cgi?id=4134
-fno-tree-ch gets the required warning
diff --git a/gcc/tree-ssa-loop-ch.c b/gcc/tree-ssa-loop-ch.c
index c876d62..d405d00 100644
--- a/gcc/tree-ssa-loop-ch.c
+++ b/gcc/tree-ssa-loop-ch.c
@@ -393,7 +393,7 @@ ch_base::copy_headers (function *fun)
{
gimple *stmt = gsi_stmt (bsi);
if (gimple_code (stmt) == GIMPLE_COND)
- gimple_set_no_warning (stmt, true);
+ ;//gimple_set_no_warning (stmt, true);
else if (is_gimple_assign (stmt))
{
enum tree_code rhs_code = gimple_assign_rhs_code (stmt);
also gets the required warning. Looking into it.
>From gcc-bugs-return-633315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 07:46:57 2019
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From: "flast at flast dot jp" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89297] New: ICE: unexpected expression 'id' of kind overload
Date: Tue, 12 Feb 2019 07:46:00 -0000
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Bug ID: 89297
Summary: ICE: unexpected expression 'id' of kind overload
Product: gcc
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ICE caused by list-initializer within template function that contains call of
overloads, like following.
```
int id(int v) { return v; }
float id(float v) { return v; }
template <typename>
int foo(int v)
{
return int{id(v)}; // ICE on here
}
```
https://wandbox.org/permlink/XtHobAXA7lQ1jPTy
I encountered this issue after upgrade from 8 to 9, so I think it's a 9's
regression.
>From gcc-bugs-return-633316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 07:51:46 2019
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Subject: [Bug bootstrap/67128] Makefile.in, libcc1 and --enable-shared
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SzÅ‘ts Ãkos <szotsaki at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from SzÅ‘ts Ãkos <szotsaki at gmail dot com> ---
Option "--with-pic" doesn't work, but the suggested workaround in the original
post does.
However, I ended up disabling libcc1 (as I see most of the distribs do it,
anyway) with --disable-libcc1 which, as well, solved this issue.
Version: 8.2.0
>From gcc-bugs-return-633317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:16:58 2019
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From: "lee_shao at 126 dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/89298] New: Address-Sanitizer false positive for global-buffer-overflow?
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Bug ID: 89298
Summary: Address-Sanitizer false positive for
global-buffer-overflow?
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
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CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Hi,
In my program, the ASAN report ERROR global-buffer-overflow on several global
variables.
However,I'm sure that I use the global variables in the right way, like this:
In AAA.c
//define a global var
int g_var_a;
........
........
g_var_a =1; //ASAN report global-buffer-overflow right here!
According to the formula, Shadow = (Mem >> 3) + 0x20000000, the value of the
shadow memory of the global var **g_var_a** is F9 ( Global Redzone),witch
confuses me very much!
I use GCC8.1.0 to compile my project on SUSE Linux Enterprise Server 12.
The application is compiled like this:
1. A.c + B.c -> GCC8.1 ASan -> libproblem.so
2. C.c + libproblem.so --> GCC8.1 ASan --> App
3. In A.c :
... globals ...
unsigned int g_var =0;
... globals ...
In B.c :
extern unsigned int g_var =0;
..........
void fun(){
.....
g_var =0; //ASan report global-buffer-overflow right here!
.....
}
I found that:
1. The global g_var is located 0 bytes to the right of another global
variable,that is , no redzone is inserted between them
2. Under normal circumstances， $ nm App > nm.log we can get the addresses of
globals g_var and __odr_asan.g_var ;
However, when it goes wrong, there is no symbol __odr_asan.g_var
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Tue, 12 Feb 2019 08:30:00 -0000
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--- Comment #23 from Martin Liška <marxin at gcc dot gnu.org> ---
>
> The purpose of the check is impose a limit on the size of the jumps that
> occur within the location_t representation, so that if there's a big jump in
> line numbers, we start a linemap, where big is "> 1000" within the
> location_t value. The idea is to avoid wasting location_t values, without
> creating too many linemap instances.
Ah, I see, thanks for clarification!
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Tue, 12 Feb 2019 08:31:00 -0000
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--- Comment #24 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #22)
> Should be fixed by r268789.
Nice, thanks for test and cooperation.
>From gcc-bugs-return-633320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:35:09 2019
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Subject: [Bug sanitizer/89298] Address-Sanitizer false positive for global-buffer-overflow?
Date: Tue, 12 Feb 2019 08:35:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-12
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please provide a reproducer, as described here:
https://www.gnu.org/software/gcc/bugs/minimize.html
Thanks.
>From gcc-bugs-return-633321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:38:05 2019
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Subject: [Bug libbacktrace/81983] libbacktrace calls bsearch with NULL base
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Status|WAITING |NEW
--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00860.html
>From gcc-bugs-return-633322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:39:33 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/89298] Address-Sanitizer false positive for global-buffer-overflow?
Date: Tue, 12 Feb 2019 08:39:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It is not clear how that can compile, because both
unsigned int g_var =0;
and
extern unsigned int g_var =0;
are g_var definitions, so if that is in multiple TUs, linker should fail to
link that.
In the other snippet you mention
int g_var_a;
which is something very different (unless -fno-common), that is a common var
and ASAN doesn't instrument those.
>From gcc-bugs-return-633323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:40:51 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 08:40:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Thanks for the analysis (and the patch). Now for the
interesting question, what to do with it...
On the one hand, we must avoid at all costs is to break
compatibility with pre-compiled libraries, at least while
we do not change the ABI for another reason.
On the other hand, this is quit a serious bug, which especially
affects old Fortran codes.
At least the problem is on the caller side, which means that
we could fix the caller without affecting the callee.
So, what are the options?
After checking if the patch from comment #12 does the right
thing (which I don't know), we could
a) apply it globally, after checking that it does not break
binary compatibility on all relevant platforms (quite risky
for stage 4, I think)
b) apply it #ifdefed for POWER
I think both options would need an OK from a release manager due
to us being in stage 4 (plus from a POWER maintainer for option b)
Or we could defer this to gcc 10, but I would prefer for this bug
to be fixed sooner rather than later.
>From gcc-bugs-return-633324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 08:53:51 2019
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 08:53:00 -0000
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--- Comment #14 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 12, 2019 9:40:46 AM GMT+01:00, "tkoenig at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
>
>Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
>
> What |Removed |Added
>----------------------------------------------------------------------------
> CC| |rguenth at gcc dot gnu.org
>
>--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
>Thanks for the analysis (and the patch). Now for the
>interesting question, what to do with it...
>
>On the one hand, we must avoid at all costs is to break
>compatibility with pre-compiled libraries, at least while
>we do not change the ABI for another reason.
>
>On the other hand, this is quit a serious bug, which especially
>affects old Fortran codes.
>
>At least the problem is on the caller side, which means that
>we could fix the caller without affecting the callee.
>
>So, what are the options?
>
>After checking if the patch from comment #12 does the right
>thing (which I don't know), we could
>
>a) apply it globally, after checking that it does not break
> binary compatibility on all relevant platforms (quite risky
> for stage 4, I think)
>
>b) apply it #ifdefed for POWER
>
>I think both options would need an OK from a release manager due
>to us being in stage 4 (plus from a POWER maintainer for option b)
>
>Or we could defer this to gcc 10, but I would prefer for this bug
>to be fixed sooner rather than later.
I haven't checked the details of the incorrectness of the function decl or its
type. Given the error is on the caller side only the chances of breakage are
low. Still I would suggest to fix on trunk only for now and skip the imminent
8.3 to allow for fallout to pop up.
Richard.
>From gcc-bugs-return-633325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 09:06:07 2019
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From: "paradox_ptr at protonmail dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89299] New: __attribute__ cleanup does not accept template function
Date: Tue, 12 Feb 2019 09:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89299
Bug ID: 89299
Summary: __attribute__ cleanup does not accept template
function
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: paradox_ptr at protonmail dot ch
Target Milestone: ---
#include <cstdlib>
template <typename T>
void cu( T** p ) {
if ( p && *p ) { free( *p ); }
}
void cu_char( char** s ) {
if ( s && *s ) { free ( *s ); }
}
int main() {
__attribute__((cleanup(cu))) char* s = nullptr;
return 0;
}
Using template function for cleanup yields error:
$ g++ main.cpp --std=c++14 -Wall -Wextra
main.cpp: In function ‘int main()’:
main.cpp:13:37: error: cleanup argument not a function
__attribute__((cleanup(cu))) char* s = nullptr;
^
main.cpp:13:37: warning: unused variable ‘s’ [-Wunused-variable]
Same for cleanup(cu<char>). cleanup(cu_char) works, as expected.
Clearly, template function is still a function, especially when explicitly
instantiated.
GCC documentation for Common Variable Attributes does not state any limitations
for this function.
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-8.2.0-r6/work/gcc-8.2.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/8.2.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.2.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.2.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.2.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include/g++-v8
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/8.2.0/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 8.2.0-r6 p1.7' --disable-esp --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--enable-vtable-verify --enable-libvtv --enable-lto --without-isl
--enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 8.2.0 (Gentoo 8.2.0-r6 p1.7)
>From gcc-bugs-return-633326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 09:06:18 2019
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
Date: Tue, 12 Feb 2019 09:06:00 -0000
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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----------------------------------------------------------------------------
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is obsolete| |
--- Comment #6 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45662
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45662&action=edit
GNU extension to intrinsic SIGN
Corrected patch.
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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--- Comment #7 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45663
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Change Log for gcc/testsuite for patch
Corrected change log
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
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--- Comment #8 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to Dominique d'Humieres from comment #5)
> Patch should go to the fortran@gcc.gnu.org and gcc-patches@gcc.gnu.org
> mailing lists for review.
will do.
>
> From a quick look at the patch it does seem that the extension is rejected
> when compiling with -std=f*.
That is correct. The purpose is to bring the treatment of SIGN into line with
that of DIM, MOD and MODULO which accept differing kinds in the their actual
arguments when -std=gnu (i.e. the default). DIM, MOD and MODULO are also
rejected when -std=f*.
>
> I don't see the need to add this extension (read: I am opposed to this
> extension).
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Subject: [Bug target/38959] Additional switches to disallow processor supplementary instructions
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Peter Cordes <peter at cordes dot ca> changed:
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CC| |peter at cordes dot ca
--- Comment #3 from Peter Cordes <peter at cordes dot ca> ---
We can maybe close this as fixed (if -march=i386 didn't exist/work at the time)
or invalid. Or maybe we want to add some CPU-level awareness to code-gen for
__builtin_ia32_rdtsc / rdpmc / rdtscp.
The cmov / fcomi / fcomi proposed switches are already supported as part of
-march=pentium -mtune=generic or lower, e.g. -march=i386. (The 32-bit default
is something like arch=i686 and tune=generic, with it being possible to
configure gcc so SSE2 is on by default in 32-bit code.)
Those are the important ones, because they're emitted automatically by the
compiler's back-end. The other options would just be trying to save you from
yourself, e.g. rejecting source that contains __rdtsc() /
__builtin_ia32_rdtsc()
----
I'm not sure what the situation is with long NOPs. GCC doesn't (normally?)
emit them, just using .p2align directives for the assembler. In 32-bit mode,
GAS appears to avoid long NOPs, using either 2-byte xchg ax,ax or pseudo-nops
like LEA esi,[esi+eiz*1+0x0] that add a cycle of latency to the dep chain
involving ESI.
Even with -march=haswell, gcc+gas fail to use more efficient long NOPs for
padding between functions.
---
I'm not sure if CPUID is ever emitted by gcc's back-end directly, only from
inline asm. i386/cpuid.h uses inline asm. But __get_cpuid_max() checks if
CPUID is even supported in a 386-compatible way, checking if a bit in EFLAGS is
sticky or not. If your source code is written safely, you won't have a problem
unless possibly __builtin_cpu_init runs CPUID without checking, in programs
that use __builtin_cpu_supports() or _is().
__builtin_ia32_rdpmc() and __rdtsc() do *not* check -march= before emitting
rdpmc and rdtsc. Neither does __rdtscp(), which is interesting because that
instruction is new enough that some still-relevant CPUs don't support it.
__rdpmc() isn't "volatile", though, so stop-start optimizes to 0. (I found
this bug looking for existing reports of that issue.)
Test cases: https://godbolt.org/z/hqPdza
FCMOV and CMOV are also handled correctly, but I didn't write functions for
them.
int fcomi(double x, double y) {
return x<y;
}
gcc8.2 on Godbolt:
-m32 -O3 -march=haswell code-gen
(-mfpmath=387 is the default; SSE2 cmpltsd / movd / AND would have done it
nicely. Or comisd / seta is maybe even better, and gcc uses that. I wonder if
tune=haswell should imply fpmath=sse)
fcomi(double, double): # haswell
fld QWORD PTR [esp+4]
fld QWORD PTR [esp+12]
xor eax, eax
fcomip st, st(1) # only available with register operands, and not
in pp form
fstp st(0)
seta al
ret
-m32 -O3 -march=i486 code-gen
fcomi(double, double): # i486
fld QWORD PTR [esp+12]
fcomp QWORD PTR [esp+4]
fnstsw ax
test ah, 69 # check above and not unordered, couldn't just
shift/and
sete al
and eax, 255
ret
Adding -mtune=generic, we get the expected movzx instead of AND EAX, imm32, so
I guess movzx was slow on 486.
(In reply to Mark Hobley from comment #0)
> Proposed switches:
>
> --nocpuid This option causes the compiler to not generate cpuid opcodes
> --nocmov This option causes the compiler to not generate cmov opcodes
> --nofcmov This option causes the compiler to not generate fcmov opcodes
> --nofcomi This option causes the compiler to not generate fcomi opcodes
> --nonopl This option causes the compiler to not generate fcomi opcodes
> --nordpmc This option causes the compiler to not generate rdpmc opcodes
> --nordtsc This option causes the compiler to not generate rdtsc opcodes
>
> Possibly a general switch that is equivalent to all of the above
>
> --nosupplementaryinstructions
>
> Rationale
>
> It is possible that a developer still wants to compile for a particular
> architecture (for example the i486), but does not wish to generate code with
> supplementary instructions (such as cpuid), that may be present on that
> architecture.
>From gcc-bugs-return-633330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 09:18:32 2019
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Subject: [Bug target/38959] Additional switches to disallow processor supplementary instructions
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--- Comment #4 from Peter Cordes <peter at cordes dot ca> ---
The __builtin_ia32_rdpmc being a pure function bug I mentioned in my previous
comment is already reported and fixed (in gcc9 only): bug 87550
It was present since at least gcc 5.0
https://software.intel.com/en-us/forums/software-tuning-performance-optimization-platform-monitoring/topic/595214
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #1)
> then the ix86_rewrite_tls_address splitter rewrites this into:
> (insn 12 6 10 2 (set (mem/c:TI (const:DI (unspec:DI [
> (symbol_ref:DI ("s") [flags 0x2a] <var_decl
> 0x7ff97a130b40 s>)
> ] UNSPEC_NTPOFF)) [1 s+0 S16 A64 AS1])
> (reg:TI 83)) "pr89290.c":7:5 -1
> (nil))
> and finally we ICE in the split_double_move splitter.
The address is constant and offsettable_address_addr_space_p claims that the
address
(const:DI (unspec:DI [
(symbol_ref:DI ("s") [flags 0x2a] <var_decl 0x7f4cf23f1b40 s>)
] UNSPEC_NTPOFF))
is offsettable due to:
if (CONSTANT_ADDRESS_P (y))
return 1;
So, we should probably allow addresses in the form of:
movq %rax, %fs:s+8@tpoff
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Subject: [Bug sanitizer/89298] Address-Sanitizer false positive for global-buffer-overflow?
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--- Comment #3 from Keerecles <lee_shao at 126 dot com> ---
(In reply to Jakub Jelinek from comment #2)
> It is not clear how that can compile, because both
> unsigned int g_var =0;
> and
> extern unsigned int g_var =0;
> are g_var definitions, so if that is in multiple TUs, linker should fail to
> link that.
No multiple definitions and the program is successfully compiled and linked.
> In the other snippet you mention
> int g_var_a;
> which is something very different (unless -fno-common), that is a common var
> and ASAN doesn't instrument those.
Sorry, I made a mistake. In my application, ASAN reports global-buffer-overflow
just on the global g_var.
"int g_var_a;" should be "int g_var;"
Here is the ASAN log :
$ LD_PRELOAD=/usr/local/gcc-8.1/lib/libasan.so gdb ./App
$ b ***/***/AAA.c:288
$ run
$ Breakpoint 1 288 g_var=1;
$ p &g_var
$ $1 = (int) 0xe04e4620 <g_var>
$ n
$ ==106196==ERROR: AddressSanitizer: global-buffer-overflow on address
0x08d09bc0 at pc 0xde57b983 bp 0xffffcfe8 sp 0xffffcfdc [Here the address
(0x08d09bc0) is not 0xe04e4620 ]
$ #0 0xde57b982 in ***/***/AAA.c:288
$ 0x08d09bc0 is located 0 bytes to the right of global variable 'g_var_others'
defined in ***
$ 0x08d09bc0 is located 0 bytes inside of global variable 'g_var' defined in
***
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Subject: [Bug tree-optimization/89253] [8/9 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 12 09:29:39 2019
New Revision: 268790
URL: https://gcc.gnu.org/viewcvs?rev=268790&root=gcc&view=rev
Log:
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-split.c
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Subject: [Bug bootstrap/67128] Makefile.in, libcc1 and --enable-shared
Date: Tue, 12 Feb 2019 09:37:00 -0000
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--- Comment #4 from ДилÑн Палаузов <dilyan.palauzov at aegee dot org> ---
If an impossible combination is requested, then ./configure shall fail
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From: "svenja.mehringer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89300] New: C++ requires statement does not fail silently for const void *
Date: Tue, 12 Feb 2019 09:38:00 -0000
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Bug ID: 89300
Summary: C++ requires statement does not fail silently for
const void *
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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The following code snippet fails to compile with GCC 8.1/8.2/latest trunk on
Godbolt because of the requires clause. From my understanding, the requires
should just evaluate to false and remove the second foo overload from the list
of possible candidates.
```cpp
#include <type_traits>
template <typename t>
void foo()
{}
template <typename t>
requires requires { std::is_integral_v<decltype(std::declval<t>() -
std::declval<t>())>; }
void foo()
{}
int main()
{
foo<const void *>();
}
```
see https://godbolt.org/z/iFW2MO
The same code compiles fine with the clang experimental concept branch.
The error message:
```
<source>: In function 'int main()':
<source>:8:71: error: invalid use of 'const void'
requires requires { std::is_integral_v<decltype(std::declval<t>() -
std::declval<t>())>; }
~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
Compiler returned: 1
```
Locally reproduced on :
Using built-in specs.
COLLECT_GCC=/import/GCC//8.2.0/bin/g++
COLLECT_LTO_WRAPPER=/import/GCC/8.2.0/bin/../libexec/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/data/scratch/skillen1105/gcc8.2/dest
Thread model: posix
gcc version 8.2.0 (GCC)
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Tue, 12 Feb 2019 09:46:00 -0000
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
This address should be valid:
(const:DI (plus:DI (unspec:DI [
(symbol_ref:DI ("s") [flags 0x2a] <var_decl 0x7f1b48c08b40 s>)
] UNSPEC_NTPOFF)
(const_int 8 [0x8])))
and there is code that allows this form in ix86_legitimate_address_p:
/* foo@dtpoff(%rX) is ok. */
if (GET_CODE (disp) != CONST
|| GET_CODE (XEXP (disp, 0)) != PLUS
|| GET_CODE (XEXP (XEXP (disp, 0), 0)) != UNSPEC
|| !CONST_INT_P (XEXP (XEXP (disp, 0), 1))
|| (XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_DTPOFF
&& XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_NTPOFF))
/* Non-constant pic memory reference. */
return false;
Jakub, can you maybe look into this issue?
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #3)
> This address should be valid:
>
> (const:DI (plus:DI (unspec:DI [
> (symbol_ref:DI ("s") [flags 0x2a] <var_decl 0x7f1b48c08b40
> s>)
> ] UNSPEC_NTPOFF)
> (const_int 8 [0x8])))
>
> and there is code that allows this form in ix86_legitimate_address_p:
>
> /* foo@dtpoff(%rX) is ok. */
> if (GET_CODE (disp) != CONST
> || GET_CODE (XEXP (disp, 0)) != PLUS
> || GET_CODE (XEXP (XEXP (disp, 0), 0)) != UNSPEC
> || !CONST_INT_P (XEXP (XEXP (disp, 0), 1))
> || (XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_DTPOFF
> && XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_NTPOFF))
> /* Non-constant pic memory reference. */
> return false;
>
> Jakub, can you maybe look into this issue?
I will, probably by looking at why it works fine without -mcmodel=large,
because in that case it generates those CONSTs with PLUS, UNSPEC_NTPOFF and
CONST_INT offset.
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89301] New: [concepts] requires clause on a template alias is ignored
Date: Tue, 12 Feb 2019 09:51:00 -0000
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Bug ID: 89301
Summary: [concepts] requires clause on a template alias is
ignored
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The following code compiles however it should not:
template<bool condition, typename T = void>
requires(condition)
using enable_if_t = T;
template<typename T, typename = enable_if_t<sizeof(T) < 0>>
void foo();
void test() {
foo<int>();
}
Slightly changed example also compiles on GCC (but fails to compile on Clang):
template<bool condition, typename T = void>
requires(condition)
using enable_if_t = T;
template<typename T>
enable_if_t<sizeof(T) < 0> foo();
void test() {
foo<int>();
}
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
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--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 45664
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45664&action=edit
Untested patch
Kind of a proposed patch that fixes the testcase. More or less shot in the
dark, as this is not really my area of experience.
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Subject: [Bug c++/89300] C++ requires statement does not fail silently for const void *
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
Ever confirmed|0 |1
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That attribute doesn't really make sense in C++, because you have destructors
anyway, so I would think that making it work with C++ templates is very low
priority.
>From gcc-bugs-return-633342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 10:21:47 2019
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Subject: [Bug hsa/89302] New: libgomp.c-c++-common/for-11.c fails when offloaded to HSA
Date: Tue, 12 Feb 2019 10:21:00 -0000
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Bug ID: 89302
Summary: libgomp.c-c++-common/for-11.c fails when offloaded to
HSA
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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CC: jamborm at gcc dot gnu.org, marxin at gcc dot gnu.org
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I can see the following two libgomp failures when the testsuite is run
on an HSA-capable machine and HSA offloading is enabled.
libgomp.c/../libgomp.c-c++-common/for-11.c execution test
libgomp.c++/../libgomp.c-c++-common/for-11.c execution test
The reason is that gridification cannot cope with != operator in
OpenMP loops. A fix has been proposed on the mailing list:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00105.html
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to paradox_ptr from comment #0)
> Clearly, template function is still a function,
No it isn't, it's a template.
> especially when explicitly
> instantiated.
Well you didn't instantiate it. 'cu' is not a function, it's a template.
But it still doesn't compile if you use __attribute__((cleanup(cu<char>))).
In theory the compiler could deduce the template arguments from the type of the
variable, but IMHO it's completely unnecessary to use this extension in C++
anyway, so adding complexity to it is a waste of resources.
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
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--- Comment #3 from paradox_ptr at protonmail dot ch ---
> Well you didn't instantiate it. 'cu' is not a function, it's a template.
Sure. There is not enough information for the compiler to deduce the type
without <>.
> IMHO it's completely unnecessary to use this extension in C++ anyway
Fair enough.
However I feel like error message is plain incorrect for cleanup(cu<char>).
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Subject: [Bug c++/89301] [concepts] requires clause on a template alias is ignored
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>From gcc-bugs-return-633346-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 10:45:49 2019
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Subject: [Bug c++/89303] New: memory leak with shared_ptr and enable_shared_from_this
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Bug ID: 89303
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I'm not sure if this issue is compiler or library related, but since changing
-O into -O0 or -O2 hides the issue, I'm assuming its the compiler.
This is g++ 8.2.0-20 from Debian unstable (SVN 20190209 (r268721) from the
gcc-8-branch) running on amd64.
% cat issue.c
#include <memory>
class blob final: public std::enable_shared_from_this<blob>
{
int* data;
public:
blob() { data = new int; }
~blob() { delete data; }
};
static int
bar(std::shared_ptr<blob>)
{
return 0;
}
int main()
{
std::shared_ptr<blob> tg = std::make_shared<blob>();
return bar(tg);
}
% g++ -Wall -g -O issue.cc
% valgrind -q --leak-check=full ./a.out
==13174== 40 bytes in 1 blocks are definitely lost in loss record 1 of 1
==13174== at 0x4835DEF: operator new(unsigned long)
(vg_replace_malloc.c:334)
==13174== by 0x1092F5: allocate (new_allocator.h:111)
==13174== by 0x1092F5: allocate (alloc_traits.h:436)
==13174== by 0x1092F5:
__allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<blob,
std::allocator<blob>, (__gnu_cxx::_Lock_policy)2> > > (allocated_ptr.h:97)
==13174== by 0x1092F5: __shared_count<blob, std::allocator<blob> >
(shared_ptr_base.h:675)
==13174== by 0x1092F5: std::__shared_ptr<blob,
(__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<blob>>(std::_Sp_alloc_shared_tag<std::allocator<blob>
>) (shared_ptr_base.h:1342)
==13174== by 0x109185: shared_ptr<std::allocator<blob> > (shared_ptr.h:359)
==13174== by 0x109185: allocate_shared<blob, std::allocator<blob> >
(shared_ptr.h:706)
==13174== by 0x109185: make_shared<blob> (shared_ptr.h:722)
==13174== by 0x109185: main (issue.cc:20)
==13174==
I've confirmed that this leak exist using GNU libc's mtrace(), i.e., this is
not a valgrind bug.
Note that changing -O into -O0 or -O2 removes the leak.
This is a reduced test case from a larger project that started leaking memory
after I upgraded Debian unstable's g++-8 package from version 8.2.0-13 to
version 8.2.0-16. I also have some tests that started raising bad_weak_ptr
exceptions, but so far I haven't reduced those.
Note that 8.2.0-16 includes the patch for libstdc++/88782 ; could this be
related?
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I can't reproduce this with GCC 8.2.1 or 9.0.1, so it might be a problem with
the Debian package. Please provide preprocessed source.
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oh I take it back, I do see it on gcc-8-branch (but not trunk).
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|c++ |libstdc++
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Summary|memory leak with shared_ptr |[8 Regression] memory leak
|and enable_shared_from_this |with shared_ptr and
| |enable_shared_from_this
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From: "adl at gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 12 Feb 2019 11:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
--- Comment #3 from Alexandre Duret-Lutz <adl at gnu dot org> ---
Created attachment 45665
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45665&action=edit
preprocessed source
Here is the preprocessed source.
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From: "fiesh at zefix dot tv" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89304] New: Compiler runs indefinitely
Date: Tue, 12 Feb 2019 11:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89304
Bug ID: 89304
Summary: Compiler runs indefinitely
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fiesh at zefix dot tv
Target Milestone: ---
The following code leads to g++ (and also clang++) running indefinitely. It
needs to be compiled with -std=c++17.
#include <tuple>
template <typename T>
void p(T const & v)
{
}
template <typename... T>
void f(T &&... args);
template <typename... T>
void f(std::tuple<T...> const & args);
template <typename... T>
void f(T &&... args)
{
auto t = std::make_tuple(args...);
f(t);
}
template <typename... T>
void f(std::tuple<T...> const & args)
{
std::apply([](auto const &... v) { (..., p(v)); }, args);
}
int main()
{
f(1., 2, 4);
return 0;
}
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88777] [9 Regression] Out-of-range offsets building glibc test-tgmath2.c for hppa-linux-gnu
Date: Tue, 12 Feb 2019 11:25:00 -0000
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--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Tue Feb 12 11:25:11 2019
New Revision: 268791
URL: https://gcc.gnu.org/viewcvs?rev=268791&root=gcc&view=rev
Log:
PR lto/88777
* cgraphunit.c (analyze_functions): Clear READONLY flag for external
types that needs constructiong.
* tree.h (may_be_aliased): Do not check TYPE_NEEDS_CONSTRUCTING.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cgraphunit.c
trunk/gcc/tree.h
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 11:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #15 from Alan Modra <amodra at gmail dot com> ---
I've regression tested the patch on powerpc64le-linux, and of course verified
that it fixes the testcase. I'm also fairly certain the patch intent is
correct in the narrow sense of it correcting gfc_get_function_type behaviour.
My comment about not being let loose near the gcc fortran support is because I
have no idea whether the patch is the best patch possible. Also, as with any
patch, reviewers should check the actual patch matches the intent. ;-)
gfc_get_function_type currently calls build_varargs_function_type_vec for
"normal" functions without arg info, which seems a perfectly reasonable way to
say the function isn't prototyped. So the patch isn't introducing new
behaviour..
By "normal" I mean functions that don't have hidden args for return values or
multiple entry points. Just because you have arg info for the return type
shouldn't make the function prototyped.
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Tue, 12 Feb 2019 11:31:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45666
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45666&action=edit
gcc9-pr89285-wip.patch
Non-working WIP.
I've tried this, thinking that we don't really need to duplicate decls etc. in
the function and could just copy the statements. Unfortunately, there are
issues with that:
1) the genericization modifies in place the PARM_DECLs and RESULT_DECL, so
mixing the pre-cp_fold_function/cp_genericize* statements (body) with the post
cp_genericize* is not going to work flawlessly
2) apparently cxx_eval_constant_expression assumes post genericization IL:
if (STATEMENT_CODE_P (TREE_CODE (t)))
{
/* This function doesn't know how to deal with pre-genericize
statements; this can only happen with statement-expressions,
so for now just fail. */
if (!ctx->quiet)
error_at (EXPR_LOCATION (t),
"statement is not a constant expression");
}
so it is upset e.g. about WHILE_STMT and others.
>From the language conformance POV though, I think it is highly desirable to
evaluate constexpr functions on the original, pre-folding/genericization,
trees, because the middle-end (e.g. match.pd, fold-const.c) is not willing to
guarantee not to fold away stuff that should be diagnosed as constexpr
violations.
So, for 1), I'd think we could just use copy_fn and remember not just the body,
but also parms and result in constexpr_fundef
For 2), I guess that would mean teaching constexpr.c about the
pre-genericization *_STMT constructs.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89304] Compiler runs indefinitely
Date: Tue, 12 Feb 2019 11:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89304
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think f(t) recurses forever, it can be reduced to:
#include <tuple>
template <typename... T>
void f(T &&... args)
{
auto t = std::make_tuple(args...);
f(t);
}
int main()
{
f(1., 2, 4);
}
Which can be reduced to:
template<typename... T> struct tuple { };
template<typename... T>
tuple<T...>
make_tuple(T...)
{
return tuple<T...>{};
}
template <typename... T>
void f(tuple<T...> const& args) { }
template <typename... T>
void f(T&&... args)
{
auto t = make_tuple(args...);
f(t);
}
int main()
{
f(1., 2, 4);
}
This fails much faster:
89304.cc: In instantiation of 'void f(T&& ...) [with T =
{tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<tuple<double,
int, long int> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > > > > > > > > > >&}]':
89304.cc:20:4: recursively required from 'void f(T&& ...) [with T =
{tuple<double, int, long int>&}]'
89304.cc:20:4: required from 'void f(T&& ...) [with T = {double, int, long
int}]'
89304.cc:25:13: required from here
89304.cc:19:22: fatal error: template instantiation depth exceeds maximum of
900 (use -ftemplate-depth= to increase the maximum)
19 | auto t = make_tuple(args...);
| ~~~~~~~~~~^~~~~~~~~
compilation terminated.
The problem is that calling f(tuple<T...> const&) requires a qualification
conversion, but (recursively) calling f(T&&...) requires no conversion
sequence, so is a better match.
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Subject: [Bug c++/89304] Compiler runs indefinitely
Date: Tue, 12 Feb 2019 11:36:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This will work, because there's no conversion needed from tuple<T...> to
tuple<T...> const, so the expected overload is more speclialized:
const auto t = std::make_tuple(args...);
f(t);
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45667
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45667&action=edit
gcc9-pr89285-wip.patch
Updated patch to address 1). For 2), I guess we need to handle e.g.
CLEANUP_STMT, IF_STMT, FOR_STMT, WHILE_STMT, DO_STMT, SWITCH_STMT,
CONTINUE_STMT, BREAK_STMT in cxx_eval_constant_expression.
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Subject: [Bug c++/89304] Compiler runs indefinitely
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
With -ftemplate-depth=50 it fails in about 5 seconds.
-ftemplate-depth=100 takes 18s
-ftemplate-depth=200 takes 1m27s
So there's something quadratic in the nested tuple instantiations which means
that reaching the default template depth of 900 takes a silly length of time.
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Subject: [Bug ipa/88818] Segfault with vtable-verify LTO optimization
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David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #4 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 45668
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45668&action=edit
C++ source code
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Subject: [Bug ipa/88818] Segfault with vtable-verify LTO optimization
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--- Comment #5 from David Binderman <dcb314 at hotmail dot com> ---
The attached code does something similar:
$ ~/gcc/results/bin/gcc -c -O2 -flto -fvtable-verify=std -std=gnu++11 bug504.cc
during GIMPLE pass: ealias
bug504.cc: In function
‘_GLOBAL__sub_I.00099__ZSt27__replacement_assert___file’:
bug504.cc:5632:56: internal compiler error: in operator[], at vec.h:845
5632 | };
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Subject: [Bug c++/89305] New: CWG DR 253 is not implemented
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Bug ID: 89305
Summary: CWG DR 253 is not implemented
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: raphael.kubo.da.costa at intel dot com
Target Milestone: ---
I can see a few bugs marked as SUSPENDED related to DR 253 and how there hadn't
been an official resolution at the time.
According to
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0490r0.html and
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#253 it's part of
C++17 (even though MSVC and clang implement it for older versions as well).
IOW, I believe G++ should accept the following code:
struct S {
};
struct T {
T() {}
const S s_;
};
rather than failing with
const.cc: In constructor ‘T::T()’:
const.cc:5:3: error: uninitialized const member in ‘const struct S’
[-fpermissive]
T() {}
^
const.cc:6:11: note: ‘const S T::s_’ should be initialized
const S s_;
^~
>From gcc-bugs-return-633362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 13:04:25 2019
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From: "koenigni at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
Date: Tue, 12 Feb 2019 13:04:00 -0000
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--- Comment #9 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
Sorry for the late reply, there was a sad incidence with my laptop and ice
cream :D
(In reply to Damian Rouson from comment #8)
> (In reply to Nicolas Koenig from comment #7)
>
> > I actually opted to use multiprocessing with shared memory (shm_open() & co)
> > instead of multithreading, since it will be much easier and faster with
> > static variables, of which gfortran makes extensive use. Also, it greatly
> > simplifies interoperability with OpenMP.
>
> This sounds like a great choice. I have no prior familiarity with
> shm_open(),
> but I very much like the idea of simplifying interoperability with OpenMP.
>
> > The only real downsides I can think of are slower spinup times...
>
> It will be interesting to compare the performance with MPI. I also wonder if
> this would also someday provide for a hybrid implementation wherein
> shm_open()
> is used within a node and MPI is used across nodes, e.g., maybe images within
> a TEAM could use shm_open() to communicate, while any communication between
> TEAMs could use MPI.
>
I think that would be ideal. The only problem with this would be that we would
have to maintain 3 implementations, which would be quite work intensive.
>
> >
> > I actually think it would be best not to turn it into a separate library but
> > instead integrate it into libgfortran.
>
> I agree.
>
> > This way, it will not be necessary to
> > install a seperate library and thereby make it easier for people to start
> > using coarrays. Therefore, it would make sense to use the libgfortran
> > descriptors.
>
> >
> > At the moment, sync_all() is called after image creation.
>
> I think that will suffice.
>From gcc-bugs-return-633363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 13:13:41 2019
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
Date: Tue, 12 Feb 2019 13:13:00 -0000
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Nicolas Koenig <koenigni at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45535|0 |1
is obsolete| |
--- Comment #10 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
Created attachment 45669
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45669&action=edit
Proof-of-concept v2
Also, here is an updated version that adds (preliminary) support for implicit
coarray accesses and coarrays in modules as well as fixing some bugs in the old
one. It is now capable of compiling and running the following simple test:
module co
integer:: a[*]
end module
program main
use co, only: a
implicit none
a[next_image()] = this_image()
sync all
print *, 'Hi from', a, 'to', this_image()
contains
function next_image()
integer:: next_image
next_image = mod(this_image(), num_images()) + 1
end function
end program
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Subject: [Bug target/38959] Additional switches to disallow processor supplementary instructions
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
As far as I can tell this report was not correctly triaged 10 years ago, as
that's exactly what -mtune= is for: optimize for a given CPU without assuming
availability of its ISA extensions. So from compiler perspective something like
-march=i386 -mtune=i486 gives the requested behavior, and any strict
enforcement is a job for the assembler, not the compiler.
So let's close as invalid.
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
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Nicolas Koenig <koenigni at gcc dot gnu.org> changed:
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--- Comment #11 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
Created attachment 45670
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library v2
Here is the new version of the library. They should really add the ability to
attach more than one file. I will ask the mailing list about integration with
libgfortran.
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Subject: [Bug lto/88876] [9 regression] ICE in propagate_pure_const ipa-pure-const.c:1502
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Feb 12 13:46:41 2019
New Revision: 268795
URL: https://gcc.gnu.org/viewcvs?rev=268795&root=gcc&view=rev
Log:
Revert a hunk from r261322 (PR lto/88876).
2019-02-12 Martin Liska <mliska@suse.cz>
PR lto/88876
* ipa-pure-const.c (propagate_pure_const): Revert hunk as
we need default values of funct_state for a function that
is not optimized.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-pure-const.c
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Subject: [Bug lto/88876] [9 regression] ICE in propagate_pure_const ipa-pure-const.c:1502
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Subject: [Bug c++/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The test behaves correctly if -O1 is combined with any (one or more) of:
-fno-guess-branch-probability
-fno-inline-functions-called-once
-fno-tree-forwprop
-fno-tree-fre
-fno-tree-pta
The bug did appear with the r268114 change to shared_ptr but that seems to have
just exposed a latent compiler bug.
It appears that the enable_shared_from_this<blob> destructor doesn't run after
~blob() runs, and so the _M_weak_count member is not decremented by that
destructor. As a result, once the last shared_ptr drops its reference the weak
count remains above zero and so the control block is never destroyed.
>From gcc-bugs-return-633370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:01:39 2019
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Subject: [Bug libbacktrace/81983] libbacktrace calls bsearch with NULL base
Date: Tue, 12 Feb 2019 14:01:00 -0000
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--- Comment #7 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Tue Feb 12 14:00:59 2019
New Revision: 268796
URL: https://gcc.gnu.org/viewcvs?rev=268796&root=gcc&view=rev
Log:
[libbacktrace] Handle bsearch with NULL base in dwarf_lookup_pc
The call to bsearch in dwarf_lookup_pc can have NULL as base argument when
the nmemb argument is 0. The base argument is required to be pointing to the
initial member of an array of nmemb objects. It is not specified what
constitutes a valid pointer to an array of 0 objects, but glibc declares base
with attribute non-null, so the NULL will trigger a sanitizer runtime error.
Fix this by only calling bsearch if nmemb != 0.
2019-02-12 Tom de Vries <tdevries@suse.de>
PR libbacktrace/81983
* dwarf.c (dwarf_lookup_pc): Don't call bsearch if nmemb == 0.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/dwarf.c
>From gcc-bugs-return-633371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:04:04 2019
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> ---
Patch committed, marking resolved-fixed.
>From gcc-bugs-return-633372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:06:49 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Tue, 12 Feb 2019 14:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89285
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45671
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45671&action=edit
gcc9-pr89285-wip.patch
Updated version that handles the above mentioned C++ stmt trees.
That said, there are still various regressions:
/usr/src/gcc/obj/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/vector.tcc:636:48:
in 'constexpr' expansion of 'std::vector<int, std::allocator<int>
>::_S_use_relocate()'
/usr/src/gcc/obj/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/vector.tcc:636:8:
error: modification of '#'result_decl' not supported by dump_expr#<expression
error>' is not a constant expression
etc.
>From gcc-bugs-return-633373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:13:15 2019
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Subject: [Bug rtl-optimization/89242] [7/8/9 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Tue, 12 Feb 2019 14:13:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I've got a patch candidate for it, testing now..
>From gcc-bugs-return-633374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:22:02 2019
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/89306] New: [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Tue, 12 Feb 2019 14:22:00 -0000
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Bug ID: 89306
Summary: [8/9 regression] Hash based IPA summaries are too slow
and consume up to 80% of IPA optimization time.
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
IPA summaries was switches to new nice C++ API but while doing so the original
array based scheme was replaced by hash tables. This is too slow for those
summaries which are dense (i.e. defined for almost all functions or variables
with a definition) and intensively used. These are:
ipa-inline-analysis.c:call_summary<edge_growth_cache_entry *>
*edge_growth_cache = NULL;
ipa-fnsummary.c:call_summary <ipa_call_summary *> *ipa_call_summaries;
ipa-fnsummary.c:function_summary <ipa_fn_summary *> *ipa_fn_summaries;
ipa-pure-const.c:class funct_state_summary_t: public function_summary
<funct_state_d *>
ipa-pure-const.c: function_summary <funct_state_d *> (symtab) {}
ipa-reference.c: function_summary <ipa_reference_vars_info_d *> (symtab) {}
This one may not get too dense in all cases and at ltrans it is populated for
non-definitions, but needs to be fast for alias oracle walks:
ipa-reference.c: function_summary <ipa_reference_optimization_summary_d *>
(symtab) {}
>From gcc-bugs-return-633375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:22:55 2019
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 12 Feb 2019 14:22:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |rtl-optimization
Version|unknown |8.2.1
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
GIMPLE at -O1 looks OK-ish - release on all paths:
main ()
{
struct allocator D.41475;
struct _Sp_make_shared_tag D.41474;
struct shared_ptr tg;
struct _Sp_counted_base * _5;
struct _Sp_counted_base * _16;
_Atomic_word * _17;
int _18;
int _19;
<bb 2> [local count: 1073741825]:
std::__shared_ptr<blob,
(__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<blob> > (&tg.D.36194,
D.41474, &D.41475);
D.41475 ={v} {CLOBBER};
_16 = MEM[(const struct __shared_count &)&tg + 8]._M_pi;
if (_16 != 0B)
goto <bb 3>; [70.00%]
else
goto <bb 6>; [30.00%]
<bb 3> [local count: 751619277]:
if (__gthrw___pthread_key_create != 0B)
goto <bb 4>; [53.47%]
else
goto <bb 5>; [46.53%]
<bb 4> [local count: 401890827]:
_17 = &_16->_M_use_count;
__atomic_fetch_add_4 (_17, 1, 4);
goto <bb 9>; [100.00%]
<bb 5> [local count: 349728449]:
_18 = MEM[(_Atomic_word *)_16 + 8B];
_19 = _18 + 1;
MEM[(_Atomic_word *)_16 + 8B] = _19;
goto <bb 9>; [100.00%]
<bb 6> [local count: 1073741824]:
_5 = MEM[(struct __shared_count *)&tg + 8B]._M_pi;
if (_5 != 0B)
goto <bb 7>; [53.47%]
else
goto <bb 8>; [46.53%]
<bb 7> [local count: 574129753]:
std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (_5);
<bb 8> [local count: 1073741824]:
tg ={v} {CLOBBER};
return 0;
<bb 9> [local count: 574129754]:
std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release (_16);
goto <bb 6>; [100.00%]
>From gcc-bugs-return-633376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:29:05 2019
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Tue, 12 Feb 2019 14:29:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-12
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Mine then.
>From gcc-bugs-return-633377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 14:48:00 2019
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Subject: [Bug c++/89297] ICE: unexpected expression 'id' of kind overload
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-12
CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r268321.
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From: "iii at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89233] [9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Tue, 12 Feb 2019 14:52:00 -0000
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--- Comment #3 from iii at gcc dot gnu.org ---
Author: iii
Date: Tue Feb 12 14:51:39 2019
New Revision: 268798
URL: https://gcc.gnu.org/viewcvs?rev=268798&root=gcc&view=rev
Log:
S/390: Reject invalid Q/R/S/T addresses after LRA
The following insn:
(insn (set (reg:DI %r2)
(sign_extend:DI (mem:SI
(const:DI (plus:DI (symbol_ref:DI ("*.LC0"))
(const_int 16)))))))
is correctly recognized by LRA as RIL alternative of extendsidi2
define_insn. However, when recognition runs after LRA, it returns RXY
alternative, which is incorrect, since the offset 16 points past the
end of of *.LC0 literal pool entry. Such addresses are normally
rejected by s390_decompose_address ().
This inconsistency confuses annotate_constant_pool_refs: the selected
alternative makes it proceed with annotation, only to find that the
annotated address is invalid, causing ICE.
This patch fixes the root cause, namely, that s390_check_qrst_address ()
behaves differently during and after LRA.
gcc/ChangeLog:
2019-02-12 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/89233
* config/s390/s390.c (s390_decompose_address): Update comment.
(s390_check_qrst_address): Reject invalid address forms after
LRA.
gcc/testsuite/ChangeLog:
2019-02-12 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/89233
* gcc.target/s390/pr89233.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/s390/pr89233.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 12 Feb 2019 15:22:00 -0000
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--- Comment #6 from Alexandre Duret-Lutz <adl at gnu dot org> ---
I mentioned in my first comment that I had also cases that threw bad_weak_ptr.
I've been able to reproduce those as follows:
% cat badwptr.cc
#include <memory>
class blob final: public std::enable_shared_from_this<blob>
{
};
int main()
{
std::shared_ptr<blob> tg = std::make_shared<blob>();
return tg->shared_from_this().use_count();
}
% g++ -g -O badwptr.cc
% ./a.out
terminate called after throwing an instance of 'std::bad_weak_ptr'
what(): bad_weak_ptr
When compiled with -O2 or -O0, the program exits with $?=2 as expected.
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 45672
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45672&action=edit
Reduced testcase
This (partially) reduced version fails with 8.2.1 or trunk when -O1 is used.
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Subject: [Bug go/89277] [9 Regression] libgo memory hogs in libgo testsuite (at least on s390x-linux-gnu)
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rdapp at linux dot ibm.com changed:
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----------------------------------------------------------------------------
CC| |rdapp at linux dot ibm.com
--- Comment #1 from rdapp at linux dot ibm.com ---
Guessing this is the same problem as in PR89123 (triggering a panic in a panic,
never stopping to allocate memory).
I already proposed a patch that might also help here.
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> GIMPLE at -O1 looks OK-ish - release on all paths:
But release decrements the weak_count, and only calls _M_destroy() if the count
reaches zero.
The attachment in comment 7 removes all the atomics and still shows the same
problem.
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #8)
> (In reply to Richard Biener from comment #5)
> > GIMPLE at -O1 looks OK-ish - release on all paths:
>
> But release decrements the weak_count, and only calls _M_destroy() if the
> count reaches zero.
And the problem is that a call to weak_release() from the
enable_shared_from_this dtor is missing, so the count never reaches zero.
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Subject: [Bug rtl-optimization/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #8)
> (In reply to Richard Biener from comment #5)
> > GIMPLE at -O1 looks OK-ish - release on all paths:
>
> But release decrements the weak_count, and only calls _M_destroy() if the
> count reaches zero.
>
> The attachment in comment 7 removes all the atomics and still shows the same
> problem.
Compiling it with -DFIXME adds:
else __builtin_puts("null");
in _M_weak_release(), and that fixes it despite that else branch never actually
being taken. Just the presence of I/O appears to prevent that function being
misoptimized.
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Subject: [Bug c++/89305] CWG DR 253 is not implemented
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The resolution to the DR goes a bit further than the rule GCC has been using:
A class type T is const-default-constructible if default-initialization of T
would invoke a user-provided constructor of T (not inherited from a base class)
or if
- each direct non-variant non-static data member M of T has a default member
initializer or, if M is of class type X (or array thereof), X is
const-default-constructible,
- if T is a union with at least one non-static data member, exactly one
variant member has a default member initializer,
- if T is a not a union, for each anonymous union member with at least one
non-static data member (if any), exactly one non-static data member has a
default member initializer, and
- each potentially constructed base class of T is
const-default-constructible.
>From gcc-bugs-return-633386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 15:35:46 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45666|0 |1
is obsolete| |
Attachment #45667|0 |1
is obsolete| |
Attachment #45671|0 |1
is obsolete| |
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45673
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45673&action=edit
gcc9-pr89285-wip.patch
Updated WIP patch. There are still various regressions, but it is getting
better. Before I continue further on this, I'd like to know if I'm not going
completely in a wrong direction.
>From gcc-bugs-return-633387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 15:39:52 2019
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Subject: [Bug gcov-profile/89307] New: -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Tue, 12 Feb 2019 15:39:00 -0000
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Bug ID: 89307
Summary: -fprofile-generate binary may be too slow in
multithreaded environment due to cache-line conflicts
on counters
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: enhancement
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I fill in to track the problem of cacheline conflicts which is also dicussed in
LLVM variant in http://lists.llvm.org/pipermail/llvm-dev/2014-April/072172.html
>From gcc-bugs-return-633388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 15:48:46 2019
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Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
Date: Tue, 12 Feb 2019 15:48:00 -0000
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--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
There is no reliable way. The limit may not be fixed, or can be different for
different directives or format strings. A test case like the one in the Red
Hat bug #441945 linked at comment #2 might tell you there is a limit but not
necessarily what it is. A case that interposes a custom malloc/free that fails
at different points/different sizes might expose other limits (or bugs)
altogether. If that doesn't cause any trouble it's pretty safe to assume that
there is no limit. I tried both approaches with a few systems in the compile
farm (I think AIX, FreeBSD, NetBSD, Glibc, and Solaris) and only got Glibc to
fail (as in either return an error or crash).
>From gcc-bugs-return-633389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 16:03:42 2019
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Subject: [Bug sanitizer/89308] New: The sanitizers do no longer work on GCC 8 with newer kernels
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Bug ID: 89308
Summary: The sanitizers do no longer work on GCC 8 with newer
kernels
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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Priority: P3
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jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
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For GCC 9 we have fixes, but those are pretty big to backport.
What shall we do?
>From gcc-bugs-return-633390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 16:05:28 2019
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc*-*-*
Priority|P3 |P1
CC| |seurer at gcc dot gnu.org
>From gcc-bugs-return-633391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 16:21:06 2019
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the right fix is:
--- gcc/config/i386/predicates.md.jj 2019-01-01 12:37:32.267727037 +0100
+++ gcc/config/i386/predicates.md 2019-02-12 17:07:15.937097266 +0100
@@ -182,7 +182,7 @@
rtx op1 = XEXP (XEXP (op, 0), 0);
rtx op2 = XEXP (XEXP (op, 0), 1);
- if (ix86_cmodel == CM_LARGE)
+ if (ix86_cmodel == CM_LARGE && GET_CODE (op1) != UNSPEC)
return false;
if (!CONST_INT_P (op2))
return false;
Even with -mcmodel=large, it is ok to offset the TLS LE by signed 32-bit
constants, we don't really support > 2GB thread local segments, we don't have
relocations for that etc. and nobody with sane mind should expect that to work.
>From gcc-bugs-return-633392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 16:33:44 2019
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
Date: Tue, 12 Feb 2019 16:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
I agree that making attribute cleanup work with templates is low priority in
C++ but I'm curious about the use case: can you describe what you are using the
attribute for in C++?
FWIW, I'm interested in this because the copy attribute and
__builtin_has_attribute() function newly added in GCC 9 will ultimately need to
handle templates so when the handling is implemented there we may be able to
reuse it for this attribute as well.
>From gcc-bugs-return-633393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 16:52:53 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
Known to work| |9.0
Target Milestone|--- |8.4
Summary|The sanitizers do no longer |[8 only] The sanitizers do
|work on GCC 8 with newer |no longer work on GCC 8
|kernels |with newer kernels
Ever confirmed|0 |1
>From gcc-bugs-return-633394-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:01:21 2019
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Subject: =?UTF-8?B?W0J1ZyBjKysvODkzMDldIE5ldzogYm9ndXMgLVdhdHRyaWJ1dGVzIOKAmGNv?= =?UTF-8?B?cHnigJkgYXR0cmlidXRlIGlnbm9yZWQgb24gYSBkZWNsYXJhdGlvbiBvZiBh?= =?UTF-8?B?IGRpZmZlcmVudCBraW5kIHRoYW4gcmVmZXJlbmNlZCBzeW1ib2w=?Date: Tue, 12 Feb 2019 17:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89309
Bug ID: 89309
Summary: bogus -Wattributes ‘copy’ attribute ignored on a
declaration of a different kind than referenced symbol
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The copy attribute newly introduced in GCC 9 (see pr81824) doesn't handle C++
templates entirely correctly. The test case below shows that it successfully
copies the noreturn attribute from f<T> to g<T> but in the process it also
issues a spurious warning.
$ cat z.C && gcc -S -Wall z.C
template <class T> __attribute__ ((noreturn)) T f ();
template <class T>
__attribute__ ((copy (f<T>))) T g () // bogus -Wattributes
{
f<T>();
} // no -Wreturn-type (good)
template int g<int>();
z.C: In substitution of ‘template<class T> T g() [with T = int]’:
z.C:9:21: required from here
z.C:4:33: warning: ‘copy’ attribute ignored on a declaration of a different
kind than referenced symbol [-Wattributes]
4 | __attribute__ ((copy (f<T>))) T g () // bogus -Wattributes
| ^
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Subject: =?UTF-8?B?W0J1ZyBjKysvODkzMDldIGJvZ3VzIC1XYXR0cmlidXRlcyDigJhjb3B54oCZ?= =?UTF-8?B?IGF0dHJpYnV0ZSBpZ25vcmVkIG9uIGEgZGVjbGFyYXRpb24gb2YgYSBkaWZm?= =?UTF-8?B?ZXJlbnQga2luZCB0aGFuIHJlZmVyZW5jZWQgc3ltYm9s?Date: Tue, 12 Feb 2019 17:03:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-12
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Target Milestone|--- |10.0
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Unless this is viewed as a regression I will handle it for GCC 10.
>From gcc-bugs-return-633396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:10:41 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
Date: Tue, 12 Feb 2019 17:10:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, which exact changes (e.g. upstream svn revisions) we are talking about
here?
>From gcc-bugs-return-633397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:13:17 2019
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From: "sirl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
Date: Tue, 12 Feb 2019 17:13:00 -0000
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Franz Sirl <sirl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sirl at gcc dot gnu.org
--- Comment #12 from Franz Sirl <sirl at gcc dot gnu.org> ---
What about moving this part of -Wformat-overflow=2 under -Woverlength-strings?
Or let it trigger only when -Wformat-overflow=2 and -Woverlength-strings are in
effect?
>From gcc-bugs-return-633398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:13:57 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89296] [7/8/9 Regression] tree copy-header masking uninitialized warning
Date: Tue, 12 Feb 2019 17:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.6.3
Keywords| |diagnostic
Last reconfirmed| |2019-02-12
CC| |msebor at gcc dot gnu.org
Blocks| |24639
Ever confirmed|0 |1
Summary|tree copy-header masking |[7/8/9 Regression] tree
|uninitialized warning |copy-header masking
| |uninitialized warning
Known to fail| |4.7.4, 4.8.4, 4.9.4, 5.5.0,
| |6.4.0, 7.2.0, 8.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed as a 4.7 regression. The most likely change of those my bisection
points to is r177667.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
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From: "lavr at ncbi dot nlm.nih.gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89230] Bogus uninited usage warning
Date: Tue, 12 Feb 2019 17:17:00 -0000
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--- Comment #5 from lavr at ncbi dot nlm.nih.gov ---
Thank you Martin, for giving me the idea of where the problem might be stemming
from! It does look like *printf() is not recognized by GCC as not modifying
the local memory. But in your example GCC _might_ think that "p" and "q" can
be aliased (being the result of the same function).
Below is a mockup of the code that I was dealing with, clearly showing that "s"
and "h" cannot be aliased! "s" is being on the local frame all alone. I get
the same "uninitialized" warning if BUG is defined:
$ cat bogus2.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct S {
int a;
int b;
};
struct H {
int c;
int d;
};
void getblk(void* blk)
{
struct S* s = (struct S*) blk;
memset(blk, 0, 512);
s->a = rand() & 1;
}
struct H* gethdr(void* blk)
{
memset(blk, 0, 512);
return rand() & 1 ? (struct H*) blk : 0;
}
int main(void)
{
char blk[512], tmp[512];
struct S *s = (struct S*) blk;
struct H *h;
getblk(blk);
if (s->a || !(h = gethdr(tmp)) || s->a != h->d) {
#ifdef BUG
printf("%d\n", s->b);
#endif
if (s->a)
printf("s->a = %d\n", s->a);
else if (!h)
printf("!h\n");
else
printf("h->d = %d\n", h->d);
}
}
$ gcc -O6 -Wall -c bogus2.c
$ gcc -DBUG -O6 -Wall -c bogus2.c
bogus2.c: In function ‘main’:
bogus2.c:42:17: warning: ‘h’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
else if (!h)
^
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From: "lavr at ncbi dot nlm.nih.gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89230] Bogus uninited usage warning
Date: Tue, 12 Feb 2019 17:26:00 -0000
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--- Comment #6 from lavr at ncbi dot nlm.nih.gov ---
That said, any function call within the outer "if()" but before the inner
"if()" would cause the warning, even if that call does not accept any pointers
(and thus cannot alias with local "s"). Modifying the code above to include
"fun()" in stead of "printf()", same issue results:
...
void fun(int i)
{
srand(i);
}
int main(void)
{
char blk[512], tmp[512];
struct S *s = (struct S*) blk;
struct H *h;
getblk(blk);
if (s->a || !(h = gethdr(tmp)) || s->a != h->d) {
#ifdef BUG
fun(s->b);
#endif
...
$ gcc -DBUG -O6 -Wall -c bogus2.c
bogus2.c: In function ‘main’:
bogus2.c:47:17: warning: ‘h’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
else if (!h)
^
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
CC| |dmalcolm at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
--- Comment #26 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Created attachment 45674
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45674&action=edit
Work-in-progress patch for a new warning for this (for GCC 10 stage 1)
(I plan to post this to the mailing list once gcc 10 stage 1 opens)
>From gcc-bugs-return-633402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:31:18 2019
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Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
Date: Tue, 12 Feb 2019 17:31:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |10.0
>From gcc-bugs-return-633403-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:31:40 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89283] [8/9 Regression] ICE: Segmentation fault (in stmt_could_throw_1_p)
Date: Tue, 12 Feb 2019 17:31:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
CC| |msebor at gcc dot gnu.org
Known to work| |7.3.0
Ever confirmed|0 |1
Known to fail| |8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with no command line options. Bisection points to r247495:
r247495 | rguenth | 2017-05-02 08:43:47 -0400 (Tue, 02 May 2017) | 24 lines
2017-05-02 Richard Biener <rguenther@suse.de>
* common.opt (fstrict-overflow): Alias negative to fwrapv.
* doc/invoke.texi (fstrict-overflow): Remove all traces of
-fstrict-overflow documentation.
* tree.h (TYPE_OVERFLOW_UNDEFINED): Do not test flag_strict_overflow.
(POINTER_TYPE_OVERFLOW_UNDEFINED): Test !flag_wrapv instead of
flag_strict_overflow.
* ipa-inline.c (can_inline_edge_p): Do not test flag_strict_overflow.
* lto-opts.c (lto_write_options): Do not stream it.
* lto-wrapper.c (merge_and_complain): Do not handle it.
* opts.c (default_options_table): Do not set -fstrict-overflow.
(finish_options): Likewise do not clear it when sanitizing.
* simplify-rtx.c (simplify_const_relational_operation): Do not
test flag_strict_overflow.
>From gcc-bugs-return-633404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:37:15 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 12 Feb 2019 17:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Component|rtl-optimization |middle-end
Target Milestone|--- |8.3
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Needs more investigation (ignore my previous comment - main() is not really
relevant here). This is a very recent regression on the branch.
You can do -fdisable-tree-ealias and still get the failure but less early
IL changes when comparing to -fno-tree-pta.
>From gcc-bugs-return-633405-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:43:52 2019
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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89310] New: Poor code generation returning float field from a struct
Date: Tue, 12 Feb 2019 17:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89310
Bug ID: 89310
Summary: Poor code generation returning float field from a
struct
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
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The following test case shows poor code generation on powerpc64le-linux:
bergner@pike:~/gcc/BUGS/PR88845$ cat struct.i
struct s {
int i;
float f;
};
float
foo (struct s arg)
{
return arg.f;
}
bergner@pike:~/gcc/BUGS/PR88845$ gcc -O2 -S struct.i
bergner@pike:~/gcc/BUGS/PR88845$ cat struct.s
foo:
srdi 3,3,32
sldi 9,3,32
mtvsrd 1,9
xscvspdpn 1,1
blr
The srdi followed by a sldi could be replaced with a simple: rldicr 9,3,0,31
>From gcc-bugs-return-633406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:46:32 2019
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From: "raphael.kubo.da.costa at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89311] New: Brace initialization needlessly invokes destructor
Date: Tue, 12 Feb 2019 17:46:00 -0000
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Bug ID: 89311
Summary: Brace initialization needlessly invokes destructor
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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This is related to bug 85552 and bug 57082 as far as I can see.
GCC and ICC fail to compile this (I'm using -std=gnu++14), whereas MSVC and
clang accept it:
#include <vector>
template <class T>
struct S {
~S() {
for (size_t i = 0; i < sources_.size(); ++i)
sources_[i]->frob();
}
private:
std::vector<T*> sources_;
};
class C;
struct T {
S<C> s_{};
};
<source>: In instantiation of 'S<Source>::~S() [with T = C]':
<source>:16:11: required from here
<source>:7:20: error: invalid use of incomplete type 'class C'
7 | sources_[i]->frob();
| ~~~~~~~~~~~~~^~~~
<source>:13:7: note: forward declaration of 'class C'
13 | class C;
| ^
which ends up requiring C to be fully declared before it can be used in T.
I think https://bugs.llvm.org/show_bug.cgi?id=39363#c8 touches upon this in
"The list-initialization case does not potentially-invoke the destructor in
C++11 or C++14 either (unlike non-list copy-initialization, list-initialization
directly executes a constructor on the destination object even in C++11, and as
a result there is no temporary object created to trigger the potential
invocation of a destructor). Clang gets that case right, but GCC has another
bug there".
>From gcc-bugs-return-633407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:49:18 2019
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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89310] Poor code generation returning float field from a struct
Date: Tue, 12 Feb 2019 17:49:00 -0000
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--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Before combine, we have the following rtl:
(insn # # # 2 (set (reg/v:DI 122 [ argD.2825 ])
(reg:DI 3 3 [ argD.2825 ])) "struct.i":8:1# {*movdi_internal64}
(expr_list:REG_DEAD (reg:DI 3 3 [ argD.2825 ])
(nil)))
(note # # # 2 NOTE_INSN_FUNCTION_BEG)
(insn # # # 2 (parallel [
(set (reg:DI 124)
(ashiftrt:DI (reg/v:DI 122 [ argD.2825 ])
(const_int 32 [0x20])))
(clobber (reg:DI 76 ca))
]) "struct.i":9:13# {ashrdi3}
(expr_list:REG_DEAD (reg/v:DI 122 [ argD.2825 ])
(expr_list:REG_UNUSED (reg:DI 76 ca)
(nil))))
(insn # # # 2 (set (reg:SI 125)
(subreg:SI (reg:DI 124) 0)) "struct.i":9:13# {*movsi_internal1}
(expr_list:REG_DEAD (reg:DI 124)
(nil)))
(insn # # # 2 (parallel [
(set (reg:SF 121 [ <retval> ])
(unspec:SF [
(reg:SI 125)
] UNSPEC_SF_FROM_SI))
(clobber (scratch:DI))
]) "struct.i":9:13# {movsf_from_si}
(expr_list:REG_DEAD (reg:SI 125)
(nil)))
after combine, we get a strange paradoxical subreg:
(insn # # # 2 (set (reg:DI 126)
(reg:DI 3 3 [ argD.2825 ])) "struct.i":8:1# {*movdi_internal64}
(expr_list:REG_DEAD (reg:DI 3 3 [ argD.2825 ])
(nil)))
(insn # # # 2 (set (subreg:DI (reg:SI 125) 0)
(lshiftrt:DI (reg:DI 126)
(const_int 32 [0x20]))) "struct.i":9:13# {lshrdi3}
(expr_list:REG_DEAD (reg:DI 126)
(nil)))
(insn # # # 2 (parallel [
(set (reg/i:SF 33 1)
(unspec:SF [
(reg:SI 125)
] UNSPEC_SF_FROM_SI))
(clobber (scratch:DI))
]) "struct.i":10:1# {movsf_from_si}
(expr_list:REG_DEAD (reg:SI 125)
(nil)))
LRA cleans things up a bit to:
(insn # # # 2 (set (reg:DI 3 3 [125])
(lshiftrt:DI (reg:DI 3 3 [126])
(const_int 32 [0x20]))) "struct.i":9:13# {lshrdi3}
(nil))
(insn # # # 2 (parallel [
(set (reg/i:SF 33 1)
(unspec:SF [
(reg:SI 3 3 [125])
] UNSPEC_SF_FROM_SI))
(clobber (reg:DI 9 9 [127]))
]) "struct.i":10:1# {movsf_from_si}
(nil))
and then split2 creates the shift followed by shift:
insn # # # 2 (set (reg:DI 3 3 [125])
(lshiftrt:DI (reg:DI 3 3 [126])
(const_int 32 [0x20]))) "struct.i":9:13# {lshrdi3}
(nil))
(insn # # # 2 (set (reg:DI 9 9 [127])
(ashift:DI (reg:DI 3 3)
(const_int 32 [0x20]))) "struct.i":10:1# {ashldi3}
(nil))
(insn # # # 2 (set (reg/i:SF 33 1)
(unspec:SF [
(reg:DI 9 9 [127])
] UNSPEC_P8V_MTVSRD)) "struct.i":10:1# {p8_mtvsrd_sf}
(nil))
(insn # # # 2 (set (reg/i:SF 33 1)
(unspec:SF [
(reg/i:SF 33 1)
] UNSPEC_VSX_CVSPDPN)) "struct.i":10:1# {vsx_xscvspdpn_directmove}
(nil))
Is the paradoxical subreg from combine at fault here???
>From gcc-bugs-return-633408-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:56:27 2019
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From: "martin at netbsd dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89312] New: snprintf warning is unparsable and not confusing
Date: Tue, 12 Feb 2019 17:56:00 -0000
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Bug ID: 89312
Summary: snprintf warning is unparsable and not confusing
Product: gcc
Version: 7.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: martin at netbsd dot org
Target Milestone: ---
Gcc 7 has a new warning:
partman.c:1908:12: error: ' (' directive output may be truncated writing 2
bytes into a region of size between 1 and 255 [-Werror=format-truncation=]
"%s (%s, %s-%d)",
^~
I am not a native speaker so this may be a lanugage barrirer, but I completely
fail to parse what it is trying to tell me here.
Obviously as I am using snprintf I am aware that truncation of the output could
happen (and happy with it). There is no point in gcc warning about this
(different to cases like strncpy truncation). The function is standard defined
and safe, why warn at all here?
>From gcc-bugs-return-633409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 17:58:29 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89313] New: [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Tue, 12 Feb 2019 17:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89313
Bug ID: 89313
Summary: [9 Regression] ICE in process_alt_operands, at
lra-constraints.c:2962
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Changed between 20180930 and 20181007 :
$ cat z1.c
long f (long a);
long g (void)
{
register long z asm ("rax");
asm ("foo %0, %1, %1" : "=&r" (z) : "r" (f), "0" (f));
return z;
}
$ gcc-9-20190210 -c z1.c -O0
z1.c: Assembler messages:
z1.c:5: Error: no such instruction: `foo %rax,%rdx,%rdx'
$ gcc-9-20190210 -c z1.c -O2
z1.c: In function 'g':
z1.c:7:1: error: unable to generate reloads for impossible constraints:
7 | }
| ^
(insn 7 16 15 2 (parallel [
(set (reg/v:DI 0 ax [ z ])
(asm_operands:DI ("foo %0, %1, %1") ("=&r") 0 [
(reg/v:DI 0 ax [ z ]) repeated x2
]
[
(asm_input:DI ("r") z1.c:5)
(asm_input:DI ("0") z1.c:5)
]
[] z1.c:5))
(clobber (reg:CC 17 flags))
]) "z1.c":5:3 -1
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
during RTL pass: reload
z1.c:7:1: internal compiler error: in process_alt_operands, at
lra-constraints.c:2962
0x5aa7c0 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.c:108
0x93ac40 process_alt_operands
../../gcc/lra-constraints.c:2961
0x93d4bb curr_insn_transform
../../gcc/lra-constraints.c:3922
0x93fe8e lra_constraints(bool)
../../gcc/lra-constraints.c:4942
0x92e454 lra(_IO_FILE*)
../../gcc/lra.c:2461
0x8e9ff1 do_reload
../../gcc/ira.c:5516
0x8e9ff1 execute
../../gcc/ira.c:5700
>From gcc-bugs-return-633410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:03:37 2019
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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89314] New: ICE in wide_int_to_tree_1, at tree.c:1561
Date: Tue, 12 Feb 2019 18:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89314
Bug ID: 89314
Summary: ICE in wide_int_to_tree_1, at tree.c:1561
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Affects versions down to at least gcc-5 :
$ cat z1.c
extern __SIZE_TYPE__ strlen (const float *);
void foo (char *s)
{
if (strlen(s) > 0)
return;
}
$ gcc-9-20190210 -c z1.c
z1.c: In function 'foo':
z1.c:4:14: warning: passing argument 1 of 'strlen' from incompatible pointer
type [-Wincompatible-pointer-types]
4 | if (strlen(s) > 0)
| ^
| |
| char *
z1.c:1:30: note: expected 'const float *' but argument is of type 'char *'
1 | extern __SIZE_TYPE__ strlen (const float *);
| ^~~~~~~~~~~~~
z1.c:4:3: internal compiler error: in wide_int_to_tree_1, at tree.c:1561
4 | if (strlen(s) > 0)
| ^~
0xf0c3b3 wide_int_to_tree_1
../../gcc/tree.c:1561
0xf0cab8 wide_int_to_tree(tree_node*, poly_int<1u,
generic_wide_int<wide_int_ref_storage<false, true> > > const&)
../../gcc/tree.c:1686
0xf0cab8 build_int_cst(tree_node*, poly_int<1u, long>)
../../gcc/tree.c:1355
0x8e5bdd fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/fold-const.c:10755
0x8e9f4a fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/fold-const.c:12350
0x1195677 generic_simplify_76
.../gcc/generic-match.c:3439
0x11a0df0 generic_simplify_GT_EXPR
.../gcc/generic-match.c:38239
0x11d683d generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
.../gcc/generic-match.c:52818
0x8e0aad fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/fold-const.c:9378
0x8e9f4a fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/fold-const.c:12350
0x693b79 c_fully_fold_internal
../../gcc/c/c-fold.c:370
0x695877 c_fully_fold(tree_node*, bool, bool*, bool)
../../gcc/c/c-fold.c:125
0x6734ec c_parser_condition
../../gcc/c/c-parser.c:5640
0x673587 c_parser_paren_condition
../../gcc/c/c-parser.c:5658
0x68493a c_parser_if_statement
../../gcc/c/c-parser.c:5837
0x68493a c_parser_statement_after_labels
../../gcc/c/c-parser.c:5469
0x68618e c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:5148
0x686916 c_parser_compound_statement
../../gcc/c/c-parser.c:4982
0x6881fb c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:2354
0x6907c3 c_parser_external_declaration
../../gcc/c/c-parser.c:1653
>From gcc-bugs-return-633411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:10:54 2019
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From: "larsbj at gullik dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89315] New: Cannot convert to std::initializer_list - fails with gcc9 works with gcc8
Date: Tue, 12 Feb 2019 18:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89315
Bug ID: 89315
Summary: Cannot convert to std::initializer_list - fails with
gcc9 works with gcc8
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 45675
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45675&action=edit
Soruce that works with gcc8 fails with gcc9
The attached code compiles with:
g++ --version
g++ (GCC) 8.2.1 20181215 (Red Hat 8.2.1-6)
but fails with
/opt/gcc/gcc-9/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc-9/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc/gcc-9/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/opt/gcc/gcc-9
--enable-checking=release --enable-languages=c,c++
/opt/gcc/gcc-9/bin/g++ -c bug4.cpp
bug4.cpp: In instantiation of ‘void n< <template-parameter-1-1> >::m_fn1()
[with <template-parameter-1-1> = void]’:
bug4.cpp:17:22: required from here
bug4.cpp:13:24: error: cannot convert ‘const bar*’ to
‘std::initializer_list<int>’
13 | void m_fn1() { i{{}}; }
| ^
bug4.cpp:4:9: note: initializing argument 1 of
‘bar::bar(std::initializer_list<int>, int)’
4 | bar(std::initializer_list<int>, int = int());
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
>From gcc-bugs-return-633412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:11:28 2019
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89310] Poor code generation returning float field from a struct
Date: Tue, 12 Feb 2019 18:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89310
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-12
Ever confirmed|0 |1
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This is caused by a split after reload. The insns that are split to do not
get all the early RTL optimisations. Late splits should be avoided.
Why does this use mtvsrd instead opf mtvsrw[az]?
>From gcc-bugs-return-633413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:12:38 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89316] New: ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 18:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89316
Bug ID: 89316
Summary: ICE in gen_reg_rtx, at emit-rtl.c:1155
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Starting with gcc-8 and options -fsplit-stack -mforce-indirect-call;
affects several test cases, e.g. :
$ cat first-global.C
struct foo { foo (); };
foo foobar;
$ g++-9-20190210 -c first-global.C
$ g++-9-20190210 -c first-global.C -fsplit-stack
$
$ g++-9-20190210 -c first-global.C -fsplit-stack -mforce-indirect-call
during RTL pass: pro_and_epilogue
first-global.C: In function 'void
__static_initialization_and_destruction_0(int, int)':
first-global.C:2:11: internal compiler error: in gen_reg_rtx, at
emit-rtl.c:1155
2 | foo foobar;
| ^
0x8bdda5 gen_reg_rtx(machine_mode)
../../gcc/emit-rtl.c:1155
0x8d1ffe copy_to_mode_reg(machine_mode, rtx_def*)
../../gcc/explow.c:622
0xe825b4 ix86_expand_call(rtx_def*, rtx_def*, rtx_def*, rtx_def*, rtx_def*,
bool)
../../gcc/config/i386/i386.c:28304
0xe831ba ix86_expand_split_stack_prologue()
../../gcc/config/i386/i386.c:14763
0x10bfa9a gen_split_stack_prologue()
../../gcc/config/i386/i386.md:13199
0xe4e548 target_gen_split_stack_prologue
../../gcc/config/i386/i386.md:12962
0x93a0c1 make_split_prologue_seq
../../gcc/function.c:5714
0x93a35a thread_prologue_and_epilogue_insns()
../../gcc/function.c:5850
0x93a952 rest_of_handle_thread_prologue_and_epilogue
../../gcc/function.c:6342
0x93a952 execute
../../gcc/function.c:6384
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From: "bugzilla@poradnik-webmastera.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89317] New: Ineffective code from std::copy
Date: Tue, 12 Feb 2019 18:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89317
Bug ID: 89317
Summary: Ineffective code from std::copy
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
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gcc produces ineffective code when std::copy is used to copy data. For test I
created my own version of std::copy and this version is optimized properly.
Compiles using g++ (GCC-Explorer-Build) 9.0.1 20190211 (experimental)
Options: -O3 -std=c++11 -march=skylake
[code]
#include <stdint.h>
#include <algorithm>
#define Size 8
class Test
{
public:
void test1(void*__restrict ptr);
void test2(void*__restrict ptr);
private:
int16_t data1[Size];
int16_t data2[Size];
};
template<typename T1, typename T2>
void mycopy(T1 begin, T1 end, T2 dest)
{
while (begin != end)
{
*dest = *begin;
++dest;
++begin;
}
}
void Test::test1(void*__restrict ptr)
{
uint16_t* p = (uint16_t*)ptr;
std::copy(data1, data1 + Size, p);
p += Size;
std::copy(data2, data2 + Size, p);
}
void Test::test2(void*__restrict ptr)
{
int16_t* p = (int16_t*)ptr;
mycopy(data1, data1 + Size, p);
p += Size;
mycopy(data2, data2 + Size, p);
}
[/code]
[asm]
Test::test1(void*):
movzx eax, WORD PTR [rdi]
mov edx, 16
mov WORD PTR [rsi], ax
movzx eax, WORD PTR [rdi+2]
add rsi, 16
mov WORD PTR [rsi-14], ax
movzx eax, WORD PTR [rdi+4]
mov WORD PTR [rsi-12], ax
movzx eax, WORD PTR [rdi+6]
mov WORD PTR [rsi-10], ax
movzx eax, WORD PTR [rdi+8]
mov WORD PTR [rsi-8], ax
movzx eax, WORD PTR [rdi+10]
mov WORD PTR [rsi-6], ax
movzx eax, WORD PTR [rdi+12]
mov WORD PTR [rsi-4], ax
movzx eax, WORD PTR [rdi+14]
mov WORD PTR [rsi-2], ax
mov rax, rdx
sar rax
test rdx, rdx
jle .L69
movzx edx, WORD PTR [rdi+16]
mov WORD PTR [rsi], dx
cmp rax, 1
je .L69
movzx edx, WORD PTR [rdi+18]
mov WORD PTR [rsi+2], dx
cmp rax, 2
je .L69
movzx edx, WORD PTR [rdi+20]
mov WORD PTR [rsi+4], dx
cmp rax, 3
je .L69
movzx edx, WORD PTR [rdi+22]
mov WORD PTR [rsi+6], dx
cmp rax, 4
je .L69
movzx edx, WORD PTR [rdi+24]
mov WORD PTR [rsi+8], dx
cmp rax, 5
je .L69
movzx edx, WORD PTR [rdi+26]
mov WORD PTR [rsi+10], dx
cmp rax, 6
je .L69
movzx edx, WORD PTR [rdi+28]
mov WORD PTR [rsi+12], dx
cmp rax, 7
je .L69
movzx edx, WORD PTR [rdi+30]
mov WORD PTR [rsi+14], dx
cmp rax, 8
je .L69
movzx edx, WORD PTR [rdi+32]
mov WORD PTR [rsi+16], dx
cmp rax, 9
je .L69
movzx edx, WORD PTR [rdi+34]
mov WORD PTR [rsi+18], dx
cmp rax, 10
je .L69
movzx edx, WORD PTR [rdi+36]
mov WORD PTR [rsi+20], dx
cmp rax, 11
je .L69
movzx edx, WORD PTR [rdi+38]
mov WORD PTR [rsi+22], dx
cmp rax, 12
je .L69
movzx edx, WORD PTR [rdi+40]
mov WORD PTR [rsi+24], dx
cmp rax, 13
je .L69
movzx edx, WORD PTR [rdi+42]
mov WORD PTR [rsi+26], dx
cmp rax, 14
je .L69
movzx eax, WORD PTR [rdi+44]
mov WORD PTR [rsi+28], ax
.L69:
ret
Test::test2(void*):
vmovdqu xmm0, XMMWORD PTR [rdi]
vmovups XMMWORD PTR [rsi], xmm0
vmovdqu xmm1, XMMWORD PTR [rdi+16]
vmovups XMMWORD PTR [rsi+16], xmm1
ret
[/asm]
>From gcc-bugs-return-633415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:25:01 2019
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Subject: [Bug tree-optimization/88713] Vectorized code slow vs. flang
Date: Tue, 12 Feb 2019 18:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88713
--- Comment #54 from Chris Elrod <elrodc at gmail dot com> ---
I commented elsewhere, but I built trunk a few days ago with H.J.Lu's patches
(attached here) and Thomas Koenig's inlining patches.
With these patches, g++ and all versions of the Fortran code produced excellent
asm, and the code performed excellently in benchmarks.
Once those are merged, the problems reported here will be solved.
I saw Thomas Koenig's packing changes will wait for gcc-10.
What about H.J.Lu's fixes to rsqrt and allowing FMA use in those sections?
>From gcc-bugs-return-633416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:28:38 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 18:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89316
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed on trunk and gcc-8.
It's failing this assertion:
1155 gcc_assert (can_create_pseudo_p ());
since:
(gdb) p reload_completed
$3 = 1
>From gcc-bugs-return-633418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:36:12 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89312] snprintf warning is unparsable and not confusing
Date: Tue, 12 Feb 2019 18:36:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=80354
Blocks| |88781
Resolution|--- |INVALID
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning says that the output of the " (" part of the format string (called
a directive, same as %s) may be truncated while snprintf is writing 2 bytes
(the length of the " (" string) into a region in the destination buffer whose
size GCC has computed to be between 1 and 255 bytes. The phrasing isn't the
best but it's hard to come up with a concise sentence that describes the
problem without losing the relevant detail.
Below is a test case showing when the warning can trigger. The size of the
destination array is 255, and so is the size of the argument of the fist %s
directive, a. If strlen(a) were 254 (the longest string that fits), the call
would result in truncation.
The reason GCC warns for this is because most callers are unprepared for the
output of the function to be truncated (i.e., it would be a bug if it did).
See bug 80354 comment 8 for an example (and the rest of the discussion there
for additional background). To avoid the warning either provide a destination
buffer that can fit the longest output, or use precision to constrain the
amount of output that the %s directives can produce (e.g., %.200s to limit it
to at most 200 bytes), use the result of the function, or suppress the warning
by -Wno-format-truncation, either on the command line or via a pragma.
$ cat t.c && gcc -O2 -S -Wall t.c
char a[255];
char d[255];
void f (const char *s, int i)
{
__builtin_snprintf (d, sizeof d, "%s (%s, %s-%d)", a, s, s, i);
}
t.c: In function ‘f’:
t.c:6:39: warning: ‘ (’ directive output may be truncated writing 2 bytes into
a region of size between 1 and 255 [-Wformat-truncation=]
6 | __builtin_snprintf (d, sizeof d, "%s (%s, %s-%d)", a, s, s, i);
| ^~
t.c:6:3: note: ‘__builtin_snprintf’ output 8 or more bytes (assuming 262) into
a destination of size 255
6 | __builtin_snprintf (d, sizeof d, "%s (%s, %s-%d)", a, s, s, i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88781
[Bug 88781] [meta-bug] bogus/missing -Wstringop-truncation warnings
>From gcc-bugs-return-633417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:36:12 2019
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Subject: [Bug middle-end/88781] [meta-bug] bogus/missing -Wstringop-truncation warnings
Date: Tue, 12 Feb 2019 18:36:00 -0000
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Bug 88781 depends on bug 89312, which changed state.
Bug 89312 Summary: snprintf warning is unparsable and not confusing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89312
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
>From gcc-bugs-return-633419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:42:20 2019
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From: "martin at netbsd dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89312] snprintf warning is unparsable and not confusing
Date: Tue, 12 Feb 2019 18:42:00 -0000
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--- Comment #2 from Martin Husemann <martin at netbsd dot org> ---
Thanks for the explanation, but I see no way I could improve the code in
question reasonably and (sorry to be blunt) consider it quite stupid of gcc to
warn about it by default.
I do want the total string to be truncated, not individual fields, so precision
does not help. Making the target buffer larger makes no sense as there is
limited space in the GUI for output.
I will globaly shut off the warning, it is useless for this code. This is a
(slight) pain, as the warning is (newer) gcc specific.
>From gcc-bugs-return-633420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:51:34 2019
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From: "sje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/82479] missing popcount builtin detection
Date: Tue, 12 Feb 2019 18:51:00 -0000
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Steve Ellcey <sje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |sje at gcc dot gnu.org
Known to work| |9.0
Resolution|--- |FIXED
--- Comment #14 from Steve Ellcey <sje at gcc dot gnu.org> ---
It looks like the fix for this is checked in. I verified that on Aarch64,
when compiling bits.cpp from 531.deepsjeng_r in SPEC 2017, GCC generated
a __builtin_popcount call.
It looks like this went in after the 8.* branch was created so 9.1 would
be the first version to have it.
>From gcc-bugs-return-633421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 18:58:02 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89314] [7/8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
Date: Tue, 12 Feb 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89314
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.2.4
Keywords| |ice-on-invalid-code
Last reconfirmed| |2019-02-12
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Summary|ICE in wide_int_to_tree_1, |[7/8/9 Regression] ICE in
|at tree.c:1561 |wide_int_to_tree_1, at
| |tree.c:1561
Known to fail| |4.3.5, 4.4.7, 4.8.5, 4.9.4,
| |5.4.0, 6.4.0, 7.3.0, 8.2.0,
| |9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection suggests the culprit is r118678 (the full range of
revisions is actually between r118602 and r118678 but most are fortran
changes), so it's an ancient regression introduced in GCC 4.3.
r118678 | sayle | 2006-11-10 20:47:18 -0500 (Fri, 10 Nov 2006) | 7 lines
* tree.c (build_int_cst_wide): Add an assertion (gcc_unreachable)
when attempting to build INTEGER_CSTs of non-integral types.
* expmed.c (make_tree): Use the correct type, i.e. the inner
type, when constructing the individual elements of a CONST_VECTOR.
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Subject: [Bug target/89229] [7/8 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Tue, 12 Feb 2019 19:01:00 -0000
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--- Comment #8 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Feb 12 19:00:35 2019
New Revision: 268811
URL: https://gcc.gnu.org/viewcvs?rev=268811&root=gcc&view=rev
Log:
i386: Revert revision 268678 and revision 268657
i386 backend has
INT_MODE (OI, 32);
INT_MODE (XI, 64);
So, XI_MODE represents 64 INTEGER bytes = 64 * 8 = 512 bit operation,
in case of const_1, all 512 bits set.
We can load zeros with narrower instruction, (e.g. 256 bit by inherent
zeroing of highpart in case of 128 bit xor), so TImode in this case.
Some targets prefer V4SF mode, so they will emit float xorps for zeroing
Then the introduction of AVX512F fubared everything by overloading the
meaning of insn mode.
How should we use INSN mode, MODE_XI, in standard_sse_constant_opcode
and patterns which use standard_sse_constant_opcode? 2 options:
1. MODE_XI should only used to check if EXT_REX_SSE_REG_P is true
in any register operand. The operand size must be determined by operand
itself , not by MODE_XI. The operand encoding size should be determined
by the operand size, EXT_REX_SSE_REG_P and AVX512VL.
2. MODE_XI should be used to determine the operand encoding size.
EXT_REX_SSE_REG_P and AVX512VL should be checked for encoding
instructions.
gcc/
PR target/89229
* config/i386/i386.md (*movoi_internal_avx): Revert revision
268678 and revision 268657.
(*movti_internal): Likewise.
gcc/testsuite/
PR target/89229
* gcc.target/i386/pr89229-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89229-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression
Date: Tue, 12 Feb 2019 19:01:00 -0000
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--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45676
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45676&action=edit
gcc9-pr88074.patch
Incremental patch to tweak norm2 simplification. If e->value.real**2 would
overflow or be close to that, scale everything down (this and all further
operands by 2**norm2_scale, result by 4**norm2_scale) and at the end up again.
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Subject: [Bug libstdc++/87106] Group move and destruction of the source, where possible, for speed
Date: Tue, 12 Feb 2019 19:05:00 -0000
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--- Comment #20 from Marc Glisse <glisse at gcc dot gnu.org> ---
TODO: specify __restrict on the arguments of __relocate_object_a. Since one is
initialized and not the other, it should be safe to assume that they are
disjoint, and it helps optimize move+destroy, for instance for unique_ptr<int>.
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Subject: [Bug bootstrap/89318] New: arm bootstap failure
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Bug ID: 89318
Summary: arm bootstap failure
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: bernd.edlinger at hotmail dot de
Target Milestone: ---
../gcc-9-20190210/configure --prefix=/home/ed/gnu/arm-linux-gnueabihf
--enable-languages=all --with-arch=armv7-a --with-tune=cortex-a9
--with-fpu=vfpv3-d16 --with-float=hard
libtool: compile: /home/ed/gnu/gcc-build-arm-linux-gnueabihf/./prev-gcc/xgcc
-B/home/ed/gnu/gcc-build-arm-linux-gnueabihf/./prev-gcc/
-B/home/ed/gnu/arm-linux-gnueabihf/armv7l-unknown-linux-gnueabihf/bin/
-B/home/ed/gnu/arm-linux-gnueabihf/armv7l-unknown-linux-gnueabihf/bin/
-B/home/ed/gnu/arm-linux-gnueabihf/armv7l-unknown-linux-gnueabihf/lib/ -isystem
/home/ed/gnu/arm-linux-gnueabihf/armv7l-unknown-linux-gnueabihf/include
-isystem
/home/ed/gnu/arm-linux-gnueabihf/armv7l-unknown-linux-gnueabihf/sys-include
-fno-checking -DHAVE_CONFIG_H -I. -I../../gcc-9-20190210/isl
-I../../gcc-9-20190210/isl/include -Iinclude/
-I/home/ed/gnu/gcc-build-arm-linux-gnueabihf/gmp/../../gcc-9-20190210/gmp
-I/home/ed/gnu/gcc-build-arm-linux-gnueabihf/./gmp -g -O2 -fno-checking
-gtoggle -MT isl_aff.lo -MD -MP -MF .deps/isl_aff.Tpo -c
../../gcc-9-20190210/isl/isl_aff.c -o isl_aff.o
In file included from ../../gcc-9-20190210/isl/isl_aff.c:4101:
../../gcc-9-20190210/isl/isl_union_multi.c: In function
'isl_union_pw_multi_aff_foreach_pw_multi_aff':
../../gcc-9-20190210/isl/isl_union_multi.c:221:1: error: insn does not satisfy
its constraints:
221 | }
| ^
(insn 64 23 27 3 (parallel [
(set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
(const_int 8 [0x8])) [25 data.fn+0 S4 A64])
(reg/f:SI 12 ip [117]))
(set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
(const_int 12 [0xc])) [4 data.user+0 S4 A32])
(reg/f:SI 13 sp))
]) "../../gcc-9-20190210/isl/isl_union_multi.c":69:30 347 {*arm_strd}
(nil))
during RTL pass: cprop_hardreg
../../gcc-9-20190210/isl/isl_union_multi.c:221:1: internal compiler error: in
extract_constrain_insn, at recog.c:2211
0xcf865b _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc-9-20190210/gcc/rtl-error.c:108
0xcf86c7 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc-9-20190210/gcc/rtl-error.c:118
0xc8fa4f extract_constrain_insn(rtx_insn*)
../../gcc-9-20190210/gcc/recog.c:2211
0xc985ef copyprop_hardreg_forward_1
../../gcc-9-20190210/gcc/regcprop.c:801
0xc9a11b execute
../../gcc-9-20190210/gcc/regcprop.c:1307
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make[5]: *** [isl_aff.lo] Error 1
make[5]: Leaving directory `/home/ed/gnu/gcc-build-arm-linux-gnueabihf/isl'
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory `/home/ed/gnu/gcc-build-arm-linux-gnueabihf/isl'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/ed/gnu/gcc-build-arm-linux-gnueabihf/isl'
make[2]: *** [all-stage2-isl] Error 2
make[2]: Leaving directory `/home/ed/gnu/gcc-build-arm-linux-gnueabihf'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/home/ed/gnu/gcc-build-arm-linux-gnueabihf'
make: *** [all] Error 2
trunk revision 268755 -> bad
trunk revision 268503 -> good
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Subject: [Bug target/89233] [9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Tue, 12 Feb 2019 19:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |iii at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/88308] ICE in maybe_record_trace_start, at dwarf2cfi.c:2309
Date: Tue, 12 Feb 2019 19:19:00 -0000
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--- Comment #3 from acsawdey at gcc dot gnu.org ---
One difference between compiling this -m32 and -m64 is that the label for the
jump table is marked /s in the 64-bit version:
(code_label/s 22 21 23 4 (nil) [4 uses])
(jump_table_data 23 22 24 (addr_diff_vec:SI (label_ref:DI 22)
[
(label_ref:DI 25)
(label_ref:DI 54)
(label_ref:DI 83)
In the 32-bit version it is not, and that label plus the jump_table_data insn
that follows are not present in the dumps after split2:
(code_label 23 22 24 4 (nil) [4 uses])
;; Insn is not within a basic block
(jump_table_data 24 23 25 (addr_diff_vec:SI (label_ref:SI 23)
[
(label_ref:SI 26)
(label_ref:SI 64)
(label_ref:SI 102)
(label_ref:SI 140)
(label_ref:SI 178)
The significance of this is that tablejump_p() looks at the next insn to
determine if it is in fact a tablejump:
bool
tablejump_p (const rtx_insn *insn, rtx_insn **labelp,
rtx_jump_table_data **tablep)
{
if (!JUMP_P (insn))
return false;
rtx target = JUMP_LABEL (insn);
if (target == NULL_RTX || ANY_RETURN_P (target))
return false;
rtx_insn *label = as_a<rtx_insn *> (target);
rtx_insn *table = next_insn (label);
if (table == NULL_RTX || !JUMP_TABLE_DATA_P (table))
return false;
Since the label insn and jump table insn seem to be gone, this return false.
Then in create_trace_edges() we end up in the final stanza of the if
(JUMP_P(insn):
else
{
rtx_insn *lab = JUMP_LABEL_AS_INSN (insn);
gcc_assert (lab != NULL);
maybe_record_trace_start (lab, insn);
}
And so we try to create a trace for the jump table label which leads to the
ICE.
>From gcc-bugs-return-633428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:26:18 2019
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Subject: [Bug target/89319] New: PowerPC generates poor code when using attribute((vector_size(32))
Date: Tue, 12 Feb 2019 19:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89319
Bug ID: 89319
Summary: PowerPC generates poor code when using
attribute((vector_size(32))
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
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Created attachment 45677
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45677&action=edit
Source code to show the problem
I tried out some code using the vector_size(32) attribute on PowerPC, and it
generates poor code. I expected that it would just generate two loads, two
adds, and two stores, but instead it pushed things to the stack.
See the attached code and asm file.
>From gcc-bugs-return-633429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:28:19 2019
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Subject: [Bug target/89319] PowerPC generates poor code when using attribute((vector_size(32))
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89319
--- Comment #1 from Michael Meissner <gnu@the-meissners.org> ---
Created attachment 45678
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45678&action=edit
Power9 assembly code to show the poor code generation
This was the assembly code using -O3 -mcpu=power9
>From gcc-bugs-return-633430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:36:35 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89315] [9 Regression] Cannot convert to std::initializer_list - fails with gcc9 works with gcc8
Date: Tue, 12 Feb 2019 19:36:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-12
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|Cannot convert to |[9 Regression] Cannot
|std::initializer_list - |convert to
|fails with gcc9 works with |std::initializer_list -
|gcc8 |fails with gcc9 works with
| |gcc8
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Ugh, another r268321 :(.
>From gcc-bugs-return-633431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:38:46 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
Date: Tue, 12 Feb 2019 19:38:00 -0000
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--- Comment #2 from seurer at gcc dot gnu.org ---
I looked through the various patches for the sanitizer stuff and the important
one that is missing is the one that disables ASLR when the sanitizers are in
use. This would "solve" the issue where the thread sanitizer tests fail
depending on how ASLR has laid out memory (something I see all the time with
gcc-8 and recent kernels).
However, the thing that prompted this bug report
https://github.com/openbmc/openbmc-build-scripts/commit/282e33011ea62fe80bff2c5ab0e9ef9446d6c551
is dealing with the *address* sanitizer and I haven't seen that sort of
problem. It looks like it occurs when they are building openbmc which I have
never done.
>From gcc-bugs-return-633432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:49:58 2019
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Subject: [Bug rtl-optimization/89275] [9 Regression] Slowdown in mcperf on POWER
Date: Tue, 12 Feb 2019 19:49:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |segher at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can anyone reproduce that and if yes, can it be bisected?
>From gcc-bugs-return-633433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:52:04 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Tue, 12 Feb 2019 19:52:00 -0000
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45679
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45679&action=edit
gcc9-pr88920.patch
For that I agree it is annoying, does the following patch fix it?
There is another issue, once any test uses dg-allow-blank-lines-in-output,
empty lines are allowed in all following tests.
>From gcc-bugs-return-633434-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:54:48 2019
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Subject: [Bug tree-optimization/89314] [7/8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
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>From gcc-bugs-return-633435-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 19:58:03 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89297] [9 Regression] ICE: unexpected expression 'id' of kind overload
Date: Tue, 12 Feb 2019 19:58:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Summary|ICE: unexpected expression |[9 Regression] ICE:
|'id' of kind overload |unexpected expression 'id'
| |of kind overload
>From gcc-bugs-return-633436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:00:48 2019
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Subject: [Bug c++/88294] [9 Regression] ICE on (invalid) C++11 code: in tsubst_copy, at cp/pt.c:15391
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-633437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:16:52 2019
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Subject: [Bug c++/88368] [7/8/9 Regression] Improper ``use of deleted function''
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-633438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:21:05 2019
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89319] PowerPC generates poor code when using attribute((vector_size(32))
Date: Tue, 12 Feb 2019 20:21:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
I expect this is a DUP of bug 55266 and many others. Vector lowering for
unsupported sizes is not done very cleverly...
Not closing in case there are some mitigations you can do in the ppc backend.
>From gcc-bugs-return-633439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:22:58 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
Date: Tue, 12 Feb 2019 20:22:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
For now I suggest this patch for the docs:
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -6815,6 +6815,11 @@ does not allow the exception to be caught, only to
perform an action.
It is undefined what happens if @var{cleanup_function} does not
return normally.
+In C++ the @var{cleanup_function} must be a normal function.
+Other types of callable such as a function templates,
+lambda expressions or function objects with @code{operator()}
+are not supported.
+
@item common
@itemx nocommon
@cindex @code{common} variable attribute
>From gcc-bugs-return-633441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:28:24 2019
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Subject: [Bug c++/89311] Brace initialization needlessly invokes destructor
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Raphael Kubo da Costa from comment #0)
> This is related to bug 85552 and bug 57082 as far as I can see.
Yes, it seems like a dup of one or both.
>From gcc-bugs-return-633440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:28:23 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Tue, 12 Feb 2019 20:28:00 -0000
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--- Comment #26 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Yes, that indeed helps! With that we see it once per directory prior to
running the tests, like the other existing checks. Thanks!
>From gcc-bugs-return-633442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:28:56 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89314] [7/8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45680
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45680&action=edit
gcc9-pr89314.patch
Untested fix.
>From gcc-bugs-return-633443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:30:38 2019
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Subject: [Bug tree-optimization/89317] Ineffective code from std::copy
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You mean inefficient, right? The effects are correct as far as I can see.
>From gcc-bugs-return-633444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:36:55 2019
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Subject: [Bug target/89318] arm bootstap failure
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can you please attach preprocessed isl_aff.i ?
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Summary|arm bootstap failure |[9 Regression] arm bootstap
| |failure
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Subject: [Bug tree-optimization/89317] Ineffective code from std::copy
Date: Tue, 12 Feb 2019 20:37:00 -0000
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--- Comment #2 from Daniel Fruzynski <bugzilla@poradnik-webmastera.com> ---
Yes, I mean inefficient.
>From gcc-bugs-return-633447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:38:44 2019
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89317] Ineffective code from std::copy
Date: Tue, 12 Feb 2019 20:38:00 -0000
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--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
If we avoid changing the type from int16_t to uint16_t, we get 2 calls to
memmove. They don't get expanded, probably because we fail to simplify the size
to 16 in gimple:
_1 = &MEM[(void *)this_5(D) + 16B];
_2 = &this_5(D)->data1;
_10 = _1 - _2;
>From gcc-bugs-return-633448-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:39:50 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Tue, 12 Feb 2019 20:39:00 -0000
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #12)
> A little more sophisticated.
>
> * fortran/trans-types.c (gfc_get_function_type): Use a varargs decl
> unless we have args other than hidden ones.
Without having looked at exactly what the patch does: This sounds wrong
to em. On platforms where varargs have a different calling
signature from normal functions, this would be an ABI change.
It would probably make more sense to build the decl from the call
itself.
>From gcc-bugs-return-633449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:45:44 2019
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
Date: Tue, 12 Feb 2019 20:45:00 -0000
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--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45681
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45681&action=edit
preprocessed isl_aff.i
>From gcc-bugs-return-633450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:46:55 2019
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Subject: [Bug c++/89320] New: [9 regression] r268774 caused: FAIL: gnat.dg/vect5.adb
Date: Tue, 12 Feb 2019 20:46:00 -0000
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Bug ID: 89320
Summary: [9 regression] r268774 caused: FAIL: gnat.dg/vect5.adb
Product: gcc
Version: 9.0
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r268774 caused:
spawn -ignore SIGHUP
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/gnatmake
--GCC=/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/xgcc
--GNATBIND=/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/gnatbind
--GNATLINK=/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/gnatlink
-cargs
-B/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc
-largs
--GCC=/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/xgcc
-B/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc
-margs
--RTS=/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/x86_64-pc-linux-gnu/./libada
-q -f /export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gnat.dg/vect5.adb
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O3 -msse2 -fno-vect-cost-model
-fdump-tree-vect-details -c -u -S -o vect5.s^M
+===========================GNAT BUG DETECTED==============================+^M
| 9.0.1 20190212 (experimental) (x86_64-pc-linux-gnu) GCC error: |^M
| tree check: expected class 'constant', have 'binary' (mult_expr) in |^M
| valid_constant_size_p, at tree.c:7524 |^M
| Error detected at vect5.ads:24:51 |^M
| Please submit a bug report; see https://gcc.gnu.org/bugs/ . |^M
| Use a subject line meaningful to you and us to track the bug. |^M
| Include the entire contents of this bug box in the report. |^M
| Include the exact command that you entered. |^M
| Also include sources listed below. |^M
+==========================================================================+^M
^M
Please include these source files with error report^M
Note that list may not be accurate in some cases,^M
so please double check that the problem can still^M
be reproduced with the set of files listed.^M
Consider also -gnatd.n switch (see debug.adb).^M
^M
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/x86_64-pc-linux-gnu/./libada/adainclude/system.ads^M
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gnat.dg/vect5.adb^M
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gnat.dg/vect5.ads^M
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gnat.dg/vect5_pkg.ads^M
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/x86_64-pc-linux-gnu/./libada/adainclude/s-secsta.ads^M
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/x86_64-pc-linux-gnu/./libada/adainclude/s-parame.ads^M
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/x86_64-pc-linux-gnu/./libada/adainclude/s-stoele.ads^M
^M
compilation abandoned^M
gnatmake:
"/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gnat.dg/vect5.adb"
compilation error^M
compiler exited with status 1
Executing on host:
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/gnatclean
-c -q -n vect5 (timeout = 300)
spawn -ignore SIGHUP
/export/users/hjl/build/gnu/tools-build/gcc-mmx-native/build-x86_64-linux/gcc/gnatclean
-c -q -n vect5^M
FAIL: gnat.dg/vect5.adb 3 blank line(s) in output
FAIL: gnat.dg/vect5.adb (test for excess errors)
>From gcc-bugs-return-633452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:48:46 2019
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Tue, 12 Feb 2019 20:48:00 -0000
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 89320 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:48:45 2019
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Subject: [Bug c++/89320] [9 regression] r268774 caused: FAIL: gnat.dg/vect5.adb
Date: Tue, 12 Feb 2019 20:48:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Dup
*** This bug has been marked as a duplicate of bug 89294 ***
>From gcc-bugs-return-633453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 20:51:14 2019
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
the instruction looks like created by your patch?
* config/arm/ldrdstrd.md: Change peepholes to generate PARALLEL SImode
sets instead of single DImode set and define new insns to match this.
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce with a cross:
./cc1 -quiet -nostdinc -march=armv7-a -mtune=cortex-a9 -mfpu=vfpv3-d16
-mfloat-abi=hard -O2 pr89318.i
succeeds
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note the
(insn:TI 64 23 27 (parallel [
(set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
(const_int 8 [0x8])) [25 data.fn+0 S4 A64])
(reg/f:SI 12 ip [117]))
(set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
(const_int 12 [0xc])) [4 data.user+0 S4 A32])
(reg/f:SI 13 sp))
]) "../../gcc-9-20190210/isl/isl_union_multi.c":69:51 347 {*arm_strd}
(expr_list:REG_DEAD (reg/f:SI 12 ip [117])
(nil)))
insn is there, but passes the constraints. Do you have the r268766 fix in?
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45672|0 |1
is obsolete| |
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 45682
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45682&action=edit
Further reduced testcase
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
CC| |bergner at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Component|c |rtl-optimization
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r264897:
r264897 | bergner | 2018-10-05 22:12:30 -0400 (Fri, 05 Oct 2018) | 26 lines
gcc/
PR rtl-optimization/86939
PR rtl-optimization/87479
* ira.h (non_conflicting_reg_copy_p): New prototype.
* ira-lives.c (ignore_reg_for_conflicts): New static variable.
(make_hard_regno_dead): Don't add conflicts for register
ignore_reg_for_conflicts.
(make_object_dead): Likewise.
(non_conflicting_reg_copy_p): New function.
(process_bb_node_lives): Set ignore_reg_for_conflicts for copies.
Remove special conflict handling of REAL_PIC_OFFSET_TABLE_REGNUM.
* lra-lives.c (ignore_reg_for_conflicts): New static variable.
(make_hard_regno_dead): Don't add conflicts for register
ignore_reg_for_conflicts. Remove special conflict handling of
REAL_PIC_OFFSET_TABLE_REGNUM. Remove now unused argument
check_pic_pseudo_p and update callers.
(mark_pseudo_dead): Don't add conflicts for register
ignore_reg_for_conflicts.
(process_bb_lives): Set ignore_reg_for_conflicts for copies.
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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--- Comment #6 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Jakub Jelinek from comment #5)
> Note the
> (insn:TI 64 23 27 (parallel [
> (set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
> (const_int 8 [0x8])) [25 data.fn+0 S4 A64])
> (reg/f:SI 12 ip [117]))
> (set (mem/f/c:SI (plus:SI (reg/f:SI 13 sp)
> (const_int 12 [0xc])) [4 data.user+0 S4 A32])
> (reg/f:SI 13 sp))
> ]) "../../gcc-9-20190210/isl/isl_union_multi.c":69:51 347 {*arm_strd}
> (expr_list:REG_DEAD (reg/f:SI 12 ip [117])
> (nil)))
> insn is there, but passes the constraints. Do you have the r268766 fix in?
no, I have 268755 snapshot.
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Subject: [Bug target/89318] [9 Regression] arm bootstap failure
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed then.
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Subject: [Bug c++/89144] [9 Regression] GCC emits undefined references when a constexpr initializer_list appears in a template function
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Feb 12 21:18:51 2019
New Revision: 268827
URL: https://gcc.gnu.org/viewcvs?rev=268827&root=gcc&view=rev
Log:
PR c++/89144 - link error with constexpr initializer_list.
In this PR, we were unnecessarily rejecting a constexpr initializer_list
with no elements. This seems like a fairly useless degenerate case, but it
makes sense to avoid allocating an underlying array at all if there are no
elements and instead use a null pointer, like the initializer_list default
constructor.
If the (automatic storage duration) list does have initializer elements, we
continue to reject the declaration, because the initializer_list ends up
referring to an automatic storage duration temporary array, which is not a
suitable constant initializer. If we make it static, it should be OK
because we refer to a static array. The second hunk fixes that case. It
also means we won't diagnose some real errors in templates, but those
diagnostics aren't required, and we'll get them when the template is
instantiated.
* call.c (convert_like_real) [ck_list]: Don't allocate a temporary
array for an empty list.
* typeck2.c (store_init_value): Don't use cxx_constant_init in a
template.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-initlist11.C
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-initlist11a.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/typeck2.c
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Subject: [Bug target/89229] [7/8 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 i386]$ cat pr89229-2.c
/* { dg-do compile } */
/* { dg-options "-O2 -march=skylake-avx512" } */
typedef __int128 __m128t __attribute__ ((__vector_size__ (16), __may_alias__));
__m128t
foo (void)
{
register __int128 xmm16 __asm ("xmm16") = (__int128) -1;
asm volatile ("" : "+v" (xmm16));
return (__m128t) xmm16;
}
/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
[hjl@gnu-4 i386]$ gcc -O2 -march=skylake-avx512 -S pr89229-2.c -o /tmp/x.s
[hjl@gnu-4 i386]$ cat /tmp/x.s
.file "pr89229-2.c"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
vpternlogd $0xFF, %zmm16, %zmm16, %zmm16 <<<<<<< Should be xmm16
vmovdqa64 %xmm16, %xmm0
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 i386]$
>From gcc-bugs-return-633461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 21:20:01 2019
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Subject: [Bug c++/89144] [9 Regression] GCC emits undefined references when a constexpr initializer_list appears in a template function
Date: Tue, 12 Feb 2019 21:20:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-633463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 21:23:10 2019
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Subject: [Bug c++/85250] Builtin operator overload resolution fails to consider user-defined conversion template
Date: Tue, 12 Feb 2019 21:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85250
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the simplified test case below. Not a regression.
$ cat pr85250.C && gcc -S -Wall pr85250.C
template <class T, class U> struct X;
template <class T> struct X<T, T> { typedef T U; };
struct A {
template<typename T, typename X<T, int>::U = 0>
operator T();
};
int main()
{
A a;
return 1 + a;
}
pr85250.C: In function ‘int main()’:
pr85250.C:12:12: error: no match for ‘operator+’ (operand types are ‘int’ and
‘A’)
12 | return 1 + a;
| ~ ^ ~
| | |
| int A
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Tue, 12 Feb 2019 21:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] |[7/8/9 Regression]
|Unnecessary ZMM in |Unnecessary ZMM in
|movoi_internal_avx/movti_in |movoi_internal_avx/movti_in
|ternal |ternal
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, is this really a regression? I mean, have we ever emitted better code?
>From gcc-bugs-return-633465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 21:42:43 2019
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jakub Jelinek from comment #10)
> Though, is this really a regression? I mean, have we ever emitted better
> code?
It isn't a regression.
>From gcc-bugs-return-633466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 21:59:00 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/88248] [F18] Bogus warning about obsolescent feature: Labeled DO statement
Date: Tue, 12 Feb 2019 21:59:00 -0000
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--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
Moving the check from gfc_define_st_label to gfc_reference_st_label:
Index: symbol.c
===================================================================
--- symbol.c (revision 268826)
+++ symbol.c (working copy)
@@ -2743,10 +2743,6 @@
"DO termination statement which is not END
DO"
" or CONTINUE with label %d at %C", labelno))
return;
- if (type == ST_LABEL_DO_TARGET
- && !gfc_notify_std (GFC_STD_F2018_OBS, "Labeled DO statement "
- "at %L", label_locus))
- return;
break;
default:
@@ -2804,6 +2800,11 @@
"Shared DO termination label %d at %C", labelno))
return false;
+ if (type == ST_LABEL_DO_TARGET
+ && !gfc_notify_std (GFC_STD_F2018_OBS, "Labeled DO statement "
+ "at %L", &gfc_current_locus))
+ return false;
+
if (lp->referenced != ST_LABEL_DO_TARGET)
lp->referenced = type;
rc = true;
fixes the issue for me. It consequently needs adjustment to the test case
f2018_obs.f90, since it references the line with the "do 99 ..." instead
of the do termination line.
I am wondering about the location of the error marker. E.g. for
subroutine gfcbug151 ()
do 99 i = 1, 10
99 continue
end subroutine gfcbug151
I get:
gfcbug151.f90:2:17:
2 | do 99 i = 1, 10
| 1
Warning: Fortran 2018 obsolescent feature: Labeled DO statement at (1)
But I think this is ok.
Should I submit the above, or are there better suggestions?
>From gcc-bugs-return-633467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:04:48 2019
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Subject: [Bug go/89321] New: cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Tue, 12 Feb 2019 22:04:00 -0000
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Bug ID: 89321
Summary: cross build with riscv64 gccgo compilation failed due
to assert in constructor_expression
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: sean.wang at wdc dot com
CC: cmang at google dot com
Target Milestone: ---
* Built cross toolchain for riscv64 via gcc master branch commit hash
<4426330625ecc522a5214a990d88a68dc197b15f>
* glibc from 2.28 release branch
* Go build command:
/usr/local/go/bin/go/bin/go [build -o /artifacts/xxxxxx/ -compiler gccgo -v
-work -x -gccgoflags -w -s -g3 -X main.gitHash=xxx -g3 -X main.g
tUnixTime=0 -extldflags "-static -Wl,--no-export-dynamic" ./xxx]
WORK=/tmp/go-build855483278
* gccgo command:
/scratch/cross-gccgo/tools/bin/gccgo -c -g
-fgo-pkgpath=xxxx/xxx/xxx/internal/xxx-o $WORK/b296/_go_.o -I
$WORK/b296/_importcfgroot_ ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go
./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go
./xxx.go ./xxx.go ./xxx.go ./xxx.g\
o ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go ./xxx.go
./xxx.go
* gccgo compilation warning:
/deps/riscv64/include/libavutil/mem.h:186:1: warning: 'allg: 'alloc_size'
attribute ignored on a function returning[-Wattributes]
186 | av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb,
size_t size);
| ^~~~~~~~~~~~~
* gccgo internal compiler error:
--BEGIN--
# xxxx/xx/xxx/internal/xxx
go1: internal compiler error: in constructor_expression, at
go/go-gcc.cc:1811
0x638fb5 Gcc_backend::constructor_expression(Btype*,
std::vector<Bexpression*, std::allocator<Bexpression*> > const&, Location)
/scratch/cross-gccgo/src/gcc/gcc/go/go-gcc.cc:1811
0x6265de
Struct_construction_expression::do_get_backend(Translate_context*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/expressions.cc:13091
0x628393
Array_construction_expression::get_constructor(Translate_context*, Btype*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/expressions.cc:13315
0x68dff2 Temporary_statement::do_get_backend(Translate_context*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/statements.cc:548
0x64f7ad Block::get_backend(Translate_context*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/gogo.cc:6666
0x689fac Block_statement::do_get_backend(Translate_context*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/statements.cc:1860
0x64f7ad Block::get_backend(Translate_context*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/gogo.cc:6666
0x652b4e Function::build(Gogo*, Named_object*)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/gogo.cc:6141
0x65377b Named_object::get_backend(Gogo*, std::vector<Bexpression*,
std::allocator<Bexpression*> >&, std::vector<Btype*, std::allocator<Btype*> >&,
std::vector<Bfunction*, std::allocator<Bf\
unction*> >&)
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/gogo.cc:8228
0x65beb1 Gogo::write_globals()
/scratch/cross-gccgo/src/gcc/gcc/go/gofrontend/gogo.cc:1443
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
--END --
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--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Alexandre Duret-Lutz from comment #6)
> I mentioned in my first comment that I had also cases that threw
> bad_weak_ptr.
> I've been able to reproduce those as follows:
>
> % cat badwptr.cc
> #include <memory>
>
> class blob final: public std::enable_shared_from_this<blob>
> {
> };
>
> int main()
> {
> std::shared_ptr<blob> tg = std::make_shared<blob>();
> return tg->shared_from_this().use_count();
At this line GDB shows that tg._M_ptr->_M_weak_this._M_refcount is not set
correctly:
(gdb) p *tg._M_ptr
$6 = {<std::__enable_shared_from_this<blob, 0>> = {_M_weak_this = {_M_ptr =
0x614e80, _M_refcount = {_M_pi = 0x0}}}, data = 0x614ea0}
(gdb) p tg
$7 = {_M_ptr = 0x614e80, _M_refcount = {_M_pi = 0x614e70}}
The _M_weak_this._M_refcount._M_pi member should be the same pointer as
tg._M_refcount._M_pi.
This suggests that __weak_count::_M_assign didn't work properly, and that could
also explain why the weak count isn't correctly decremented in the other test
case, if _M_pi is null here:
~__weak_count() noexcept
{
if (_M_pi != nullptr)
{
_M_pi->_M_weak_release();
}
#ifdef FIXME
else __builtin_puts("null");
#endif
}
That would explain why _M_weak_release() isn't called.
So if the two bugs have the same root cause, it seems to be a problem in
__weak_count::_M_assign, failing to set _M_pi here:
__weak_count&
operator=(const __shared_count<_Lp>& __r) noexcept
{
_Sp_counted_base<_Lp>* __tmp = __r._M_pi;
if (__tmp != nullptr)
__tmp->_M_weak_add_ref();
if (_M_pi != nullptr)
_M_pi->_M_weak_release();
_M_pi = __tmp;
return *this;
}
> }
>
> % g++ -g -O badwptr.cc
> % ./a.out
> terminate called after throwing an instance of 'std::bad_weak_ptr'
> what(): bad_weak_ptr
>
> When compiled with -O2 or -O0, the program exits with $?=2 as expected.
>From gcc-bugs-return-633469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:14:10 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89284] gcc -fsanitize=undefined inhibits -Wuninitialized
Date: Tue, 12 Feb 2019 22:14:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-12
CC| |msebor at gcc dot gnu.org
Component|c |middle-end
Blocks| |24639
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
You're right that the sanitizers tend to interfere with GCC middle-end warnings
(there are a number of reports about this in Bugzilla -- see for example bug
82076 and the comments there). Usually the complaints are about the
instrumentation causing false positives, but as the simplified test case below
shows, it can cause false negatives as well. It may be possible to improve
things but in general the consensus seems to be that given the current
architecture it's unavoidable. Documenting this in the manual as you suggest
in the upstream discussion sounds like a good idea.
I'm going to confirm this until someone has looked into in more detail how
feasible avoiding the false negative might be in this instance.
$ cat pr89284.c && gcc -O2 -S -Wall -Wno-unused -fsanitize=undefined,address
pr89284.c
struct A
{
_Bool a;
int i;
};
void f (void)
{
struct A a;
if (a.i) { // -Wuninitialized (good)
struct A b = a;
}
}
void g (void)
{
struct A a;
if (a.a) { // missing -Wuninitialized
struct A b = a;
}
}
pr89284.c: In function ‘f’:
pr89284.c:11:8: warning: ‘a.i’ is used uninitialized in this function
[-Wuninitialized]
11 | if (a.i) { // -Wuninitialized (good)
| ~^~
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
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Subject: [Bug middle-end/64242] Longjmp expansion incorrect
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |danglin at gcc dot gnu.org
--- Comment #22 from John David Anglin <danglin at gcc dot gnu.org> ---
Also fails on hppa*-*-*.
>From gcc-bugs-return-633471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:23:39 2019
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From: "jifl-bugzilla at jifvik dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89322] New: Use of new and -lsupc++ requires -lstdc++ on architectures without atomics
Date: Tue, 12 Feb 2019 22:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89322
Bug ID: 89322
Summary: Use of new and -lsupc++ requires -lstdc++ on
architectures without atomics
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Long-standing behaviour is that if you don't want to link against the behemoth
of full libstdc++, but are still using simple C++ like new and delete, you can
link against libsupc++.
ARM9 and ARM9e (ARM arch v5) at least don't have atomic intrinsics, and
therefore the libstdc++ atomicity support relies on gthread_mutexes. When using
new, the unwinder is always pulled in to the final image (even with nothrow),
and the unwinder has a dependency in
libsupc++/eh_throw.cc:__gxx_exception_cleanup() on an atomic decrement which in
turn causes a dependency on __gnu_cxx::__exchange_and_add() as can be seen
here:
/[...]/bin/../lib/gcc/arm-eabi/7.3.0/../../../../arm-eabi/lib/arm9/nointerwork/libsupc++.a(eh_throw.o):
In function `__gxx_exception_cleanup(_Unwind_Reason_Code,
_Unwind_Control_Block*)':
(.text._ZL23__gxx_exception_cleanup19_Unwind_Reason_CodeP21_Unwind_Control_Block+0x24):
undefined reference to `__gnu_cxx::__exchange_and_add(int volatile*, int)'
collect2: error: ld returned 1 exit status
(This is a toolchain for which an arm9 multilib combo is present).
__exchange_and_add does exist in libstdc++, courtesy of
libstdc++-v3/src/c++98/atomicity.cc. To fix the above error, you need to link
with full -lstdc++, but you shouldn't need to. I guess atomicity related
functions should live in libsupc++, not libstdc++. This doesn't affect more
recent ARM architectures as they have atomic intrinics so there is no
dependency on __gnu_cxx::__exchange_and_add() when wanting to do the atomic
decrement. But it would affect any architecture (ARM or other) which doesn't
have atomic intrinsics.
Personally I can deal with the workaround, but this probably still wants to be
fixed. Some people may not want or have full libstdc++.
>From gcc-bugs-return-633472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:24:40 2019
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Subject: [Bug middle-end/84877] Local stack copy of BLKmode parameter on the stack is not aligned when the requested alignment exceeds MAX_SUPPORTED_STACK_ALIGNMENT
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |danglin at gcc dot gnu.org
--- Comment #9 from John David Anglin <danglin at gcc dot gnu.org> ---
Still present on hppa-linux.
>From gcc-bugs-return-633474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:37:12 2019
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45682|0 |1
is obsolete| |
--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 45684
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45684&action=edit
Testcase for both bugs
This new attachment can be used to reproduce both bugs, for any GCC version
from 5.1.0 onwards, with -O1.
By default it shows the memory leak, but when BAD_WEAK_PTR_BUG is defined it
demonstrates the unexpected exception.
Defining FIXME makes both bugs go away.
I've confirmed that the original bug is caused by
_M_weak_this._M_refcount._M_pi being null:
(gdb) p tg
$1 = {_M_ptr = 0x614e80, _M_refcount = {_M_pi = 0x614e70}}
(gdb) p *tg._M_ptr
$2 = {<std::__enable_shared_from_this<blob, 0>> = {_M_weak_this = {_M_ptr =
0x614e80, _M_refcount = {_M_pi = 0x0}}}, data = 0x614ea0}
Bisecting from 4.9 to 5.1 shows the bug started with r221859:
2015-04-03 Jan Hubicka
PR ipa/65076
* ipa-inline.c (edge_badness): Add combined size to the denominator.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88572] error: braces around scalar initializer - should be a warning
Date: Tue, 12 Feb 2019 22:37:00 -0000
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Will Wray <wjwray at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |wjwray at gmail dot com
--- Comment #15 from Will Wray <wjwray at gmail dot com> ---
Created attachment 45683
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45683&action=edit
Proposed patch including updated tests
Accept braces around scalar initializer within aggregate init,
previously rejected; this patch accepts without a warning.
Reject braced empty-brace value-initialization of scalar variable
previously accepted.
Maintain C++98 rejection of scalar braced-init.
See Bug 88572 for details, standards links and extra test code.
Log:
PR c++/88572
* decl.c (reshape_init_r): Remove condition that was incorrectly
rejecting braces around scalar initializer within aggregate init.
Produce no warning. Replace with condition rejecting braced-init
of scalar variable, including empty-brace value-initialization
that was being incorrectly accepted. Produce same error for both.
PR c++/88572
* g++.dg/cpp0x/initlist69.C: Update 2 tests; changed error, OK.
* g++.dg/cpp1z/direct-enum-init1.C: Update 3 tests; changed error.
* g++.dg/init/brace1.C: Update 1 test; error only on c++98. Add
1 test with one more set of braces; error on too many braces.
* g++.dg/init/brace2.C: Add 1 test; empty-brace scalar init fail.
* g++.dg/init/union2.C: Update 1 test; error only on c++98. Add
1 test with one more set of braces; error on too many braces.
* g++.dg/warn/Wbraces2.C: Update 3 test; 1 error only on c++98.
2 now give invalid conversion instead of braces error on >98.
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 12 Feb 2019 22:42:00 -0000
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--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reverting that patch on gcc-8-branch fixes the bug:
--- a/gcc/ipa-inline.c
+++ b/gcc/ipa-inline.c
@@ -1166,7 +1166,6 @@ edge_badness (struct cgraph_edge *edge, bool dump)
overall_growth += 256 * 256 - 256;
denominator *= overall_growth;
}
- denominator *= ipa_fn_summaries->get (caller)->self_size + growth;
badness = - numerator / denominator;
That line is different on trunk, so I only tested on gcc-8-branch.
>From gcc-bugs-return-633477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:45:41 2019
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Tue, 12 Feb 2019 22:45:00 -0000
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--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 tmp]$ cat x.c
/* { dg-do compile } */
/* { dg-options "-O2 -march=skylake-avx512" } */
extern int i;
int
foo1 (void)
{
register int xmm16 __asm ("xmm16") = i;
asm volatile ("" : "+v" (xmm16));
register int xmm17 __asm ("xmm17") = xmm16;
asm volatile ("" : "+v" (xmm17));
return xmm17;
}
int
foo2 (void)
{
register int xmm1 __asm ("xmm1") = i;
asm volatile ("" : "+v" (xmm1));
register int xmm17 __asm ("xmm17") = xmm1;
asm volatile ("" : "+v" (xmm17));
return xmm1;
}
/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
[hjl@gnu-4 tmp]$ gcc -S -O2 -march=skylake-avx512 x.c
[hjl@gnu-4 tmp]$ cat x.s
.file "x.c"
.text
.p2align 4,,15
.globl foo1
.type foo1, @function
foo1:
.LFB0:
.cfi_startproc
vmovd i(%rip), %xmm16
vmovdqa32 %zmm16, %zmm17
vmovd %xmm17, %eax
ret
.cfi_endproc
.LFE0:
.size foo1, .-foo1
.p2align 4,,15
.globl foo2
.type foo2, @function
foo2:
.LFB1:
.cfi_startproc
vmovd i(%rip), %xmm1
vmovdqa32 %zmm1, %zmm17
vmovd %xmm1, %eax
ret
.cfi_endproc
.LFE1:
.size foo2, .-foo2
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 tmp]$
>From gcc-bugs-return-633476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:45:41 2019
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Subject: [Bug c++/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 22:45:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #1)
> Confirmed on trunk and gcc-8.
>
> It's failing this assertion:
>
> 1155 gcc_assert (can_create_pseudo_p ());
>
> since:
>
> (gdb) p reload_completed
> $3 = 1
There are other bugs open based on that assert failing; lemme see if I can find
them...
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 22:50:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> There are other bugs open based on that assert failing; lemme see if I can
> find them...
There might be but this is a target specific related to
ix86_expand_split_stack_prologue.
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 22:51:00 -0000
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> (In reply to Eric Gallager from comment #2)
> > There are other bugs open based on that assert failing; lemme see if I can
> > find them...
>
> There might be but this is a target specific related to
> ix86_expand_split_stack_prologue.
oh ok never mind then
>From gcc-bugs-return-633480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:55:00 2019
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Tue, 12 Feb 2019 22:55:00 -0000
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Andrew Pinski from comment #3)
> > (In reply to Eric Gallager from comment #2)
> > > There are other bugs open based on that assert failing; lemme see if I can
> > > find them...
> >
> > There might be but this is a target specific related to
> > ix86_expand_split_stack_prologue.
>
> oh ok never mind then
actually since all the bugs seem to be about different targets triggering that
assert in different ways, would it be possible to replace it with an
internal_error() that provides a bit more information as to how exactly the
compiler got there? Right now the assertion failing isn't very informative and
has probably led me to mark more bugs as related than need to be...
>From gcc-bugs-return-633481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 22:56:46 2019
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Tue, 12 Feb 2019 22:56:00 -0000
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--- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
In order to fix this problem I will most likely need some way to reproduce it.
Can you share a cut down version of the source code that triggers the problem?
Do you happen to know if the problem occurs when compiling for amd64?
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Tue, 12 Feb 2019 22:58:00 -0000
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--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
I'll have a look.
>From gcc-bugs-return-633483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 12 23:02:25 2019
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> actually since all the bugs seem to be about different targets triggering
> that assert in different ways, would it be possible to replace it with an
> internal_error() that provides a bit more information as to how exactly the
> compiler got there?
That is why there is a backtrace. The assert is just asserting we can't create
any new psedu registers as the register allocator has happened already.
Basically the backend can't directly use copy_to_mode_reg/gen_reg_rtx after
register allocation. How do you print where you can from when it is two layers
deep? Also this is why there is a backtrace printed out to help out.
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #13 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45685
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45685&action=edit
I am testing this
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Subject: [Bug c/89312] snprintf warning is unparsable and not confusing
Date: Tue, 12 Feb 2019 23:11:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I understand your frustration but there is no good way to tell a benign
truncation from a potentially dangerous bug, so GCC errs on the side of caution
here.
The -Wformat-truncation option detects a number of other kinds of problems, not
just truncation, so turning it off for the whole project will prevent those
other kinds of bugs from being detected. Among these are passing null pointers
as arguments to %s directives, or unterminated arrays, as shown in the test
case below. In the future, GCC will detect other problems, including passing
unintialized arrays to %s and overlapping copies. So I would suggest to
consider using more targeted suppression techniques such as testing the return
value.
$ cat t.c && gcc -S -O2 -Wall t.c
const char a[4] = { '1', '2', '3', '4' };
void f (char *d, unsigned n, const char *s)
{
__builtin_snprintf (d, n, "a = %s", a);
if (s) // typo: should have been 'if (!s)'
return;
__builtin_snprintf (d, n, "s = %s", s);
}
t.c: In function ‘f’:
t.c:5:34: warning: ‘%s’ directive argument is not a nul-terminated string
[-Wformat-truncation=]
5 | __builtin_snprintf (d, n, "a = %s", a);
| ^~ ~
t.c:1:12: note: referenced argument declared here
1 | const char a[4] = { '1', '2', '3', '4' };
| ^
t.c:10:3: warning: ‘%s’ directive argument is null [-Wformat-truncation=]
10 | __builtin_snprintf (d, n, "s = %s", s);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug tree-optimization/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> ---
The patch referenced in comment #9 suppresses the warning for printf and
fprintf (leaving it for sprintf).
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 45685
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I am testing this
The movsi change doesn't look entirely right to me. While OImode or TImode is
not allowed in ext sse regs unless AVX512VL, that is not the case for SImode,
so for SImode if one or both operands are ext sse regs and !TARGET_AVX512VL, we
need to use MODE_XI and use the pattern with %g1, %g0 in there.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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kugan at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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is obsolete| |
--- Comment #5 from kugan at gcc dot gnu.org ---
Created attachment 45686
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ivopt patch v2
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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--- Comment #6 from kugan at gcc dot gnu.org ---
>
> Note the difference in mode for aarch64_classify_address. Not sure if this
> is because of the way my patch changes ivopt.
Yes, it ws my mistake in iv-use. with attached patch, I now get
cmp w3, 0
ble .L1
sub w3, w3, #1
mov x4, 0
cntw x5
ptrue p1.s, all
lsr w3, w3, 1
add w3, w3, 1
whilelo p0.s, xzr, x3
.p2align 3,,7
.L3:
ld2w {z4.s - z5.s}, p0/z, [x1, x4, lsl 2]
ld2w {z2.s - z3.s}, p0/z, [x2, x4, lsl 2]
add z0.s, z4.s, z2.s
sub z1.s, z5.s, z3.s
st2w {z0.s - z1.s}, p0, [x0, x4, lsl 2]
whilelo p0.s, x5, x3
incb x4, all, mul #2
incw x5
ptest p1, p0.b
bne .L3
.L1:
ret
.cfi_endproc
I will post the patch for review after stage-1 opens. In the meantime any
review is appreciated. Especially the part where iv-use is setup and
get_alias_ptr_type_for_ptr_address.
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Tue, 12 Feb 2019 23:52:00 -0000
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--- Comment #2 from sean.wang at wdc dot com ---
I can certainly try. Based on the backtrace, do you have an educated guess on
what type of condition in the code that I can try to isolate? For example, what
does the assert condition mean? Thank you.
>From gcc-bugs-return-633494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:01:12 2019
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Subject: [Bug target/88308] ICE in maybe_record_trace_start, at dwarf2cfi.c:2309
Date: Wed, 13 Feb 2019 00:01:00 -0000
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--- Comment #4 from acsawdey at gcc dot gnu.org ---
Tracked down the difference between -m32 and -m64. In the -m64 case,
rs6000_emit_move calls force_const_mem and that will set LABEL_PRESERVE_P on a
label_ref that it finds, which is what marks the jump table label for
preservation. In the -m32 case, none of this if tests succeed inside the case
E_SImode/E_DImode and as a result rs6000_emit_move does not call
force_const_mem.
It really seems to me like the label for the jump table should be marked for
preservation somewhere more definite than this.
>From gcc-bugs-return-633493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:01:07 2019
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Wed, 13 Feb 2019 00:01:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot gnu.org
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
This is not a bug in my code, it's just that before my commit, we did not catch
the illegal asm constraint usage and LRA "fixed" up the code without
complaining, but given it generated code different than what the used
requested, it silently generated "wrong" code.
With my commit, we're now generating code that LRA knows is wrong and so ICEs.
I think the fix is to catch the illegal asm constraint usage and emit a useful
error message, similar to what I did for PR87600 (r265942). I'll see if I add
some extra test(s) to catch this scenario. I'm actually surprised the tests I
added didn't catch this already, so there must be something special about this
test case I didn't check for.
>From gcc-bugs-return-633495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:03:00 2019
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From: "walter.zwieflhofer at ineosteamuk dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89291] internal compiler error: in gfc_trans_use_stmts
Date: Wed, 13 Feb 2019 00:03:00 -0000
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--- Comment #3 from zwieflhofer <walter.zwieflhofer at ineosteamuk dot com> ---
Contacted NCAR, the providers of the source code. The bug is known to them and
they have a workaround:
Set
-DBUILD_RRTMG_FAST=0
to
-DBUILD_RRTMG_FAST=1
From my side, this bug report can be closed.
But I expect it to resurface as more wrf users are moving to the later gcc
compiler versions.
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Wed, 13 Feb 2019 00:05:00 -0000
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--- Comment #3 from Ian Lance Taylor <ian at airs dot com> ---
I'm not sure exactly what assert it is, because there is no assert on that line
of go-gcc.cc. But it is most likely an assertion saying that when compiling a
struct composite literal, the number of fields in the struct does not match the
number of values in the composite literal. That should be impossible, since
the compiler fills in zero values as needed. So unfortunately I'm not sure
that is all that helpful.
>From gcc-bugs-return-633497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:10:43 2019
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Subject: [Bug go/89193] "make distclean" leaves stuff in gotools/
Date: Wed, 13 Feb 2019 00:10:00 -0000
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Wed Feb 13 00:10:06 2019
New Revision: 268830
URL: https://gcc.gnu.org/viewcvs?rev=268830&root=gcc&view=rev
Log:
PR go/89193
* Makefile.am (mostlyclean-local): Avoid getting an error from
chmod. Remove check-vet-dir and gocache-test.
* Makefile.in: Regenerate.
Modified:
trunk/gotools/ChangeLog
trunk/gotools/Makefile.am
trunk/gotools/Makefile.in
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Wed, 13 Feb 2019 00:17:00 -0000
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--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Actually, the error message:
z1.c:7:1: error: unable to generate reloads for impossible constraints:
is a new LRA test that I added as part of one of my other commits that is
catching the illegal register constraints being used, so this is a correct
error message. That said, we probably should still catch this earlier in
expand_asm_stmt().
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Wed, 13 Feb 2019 00:19:00 -0000
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--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 gcc]$ cat /tmp/x.c
/* { dg-do compile { target { ! ia32 } } } */
/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
extern double d;
void
foo1 (double x)
{
register double xmm16 __asm ("xmm16") = x;
asm volatile ("" : "+v" (xmm16));
d = xmm16;
}
/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
[hjl@gnu-4 gcc]$ gcc -S -O2 -march=skylake-avx512 /tmp/x.c
-mprefer-vector-width=512
[hjl@gnu-4 gcc]$ cat x.s
.file "x.c"
.text
.p2align 4,,15
.globl foo1
.type foo1, @function
foo1:
.LFB0:
.cfi_startproc
vmovapd %zmm0, %zmm16
vmovsd %xmm16, d(%rip)
ret
.cfi_endproc
.LFE0:
.size foo1, .-foo1
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 gcc]$
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Thanks, should be fixed.
>From gcc-bugs-return-633501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:45:46 2019
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Wed, 13 Feb 2019 00:45:00 -0000
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--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 gcc]$ cat /tmp/y.c
/* { dg-do compile { target { ! ia32 } } } */
/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
extern float d;
void
foo1 (float x)
{
register float xmm16 __asm ("xmm16") = x;
asm volatile ("" : "+v" (xmm16));
d = xmm16;
}
/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
[hjl@gnu-4 gcc]$ gcc -S -O2 -march=skylake-avx512 /tmp/y.c
-mprefer-vector-width=512
[hjl@gnu-4 gcc]$ cat y.s
.file "y.c"
.text
.p2align 4,,15
.globl foo1
.type foo1, @function
foo1:
.LFB0:
.cfi_startproc
vmovaps %zmm0, %zmm16
vmovss %xmm16, d(%rip)
ret
.cfi_endproc
.LFE0:
.size foo1, .-foo1
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 gcc]$
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Wed, 13 Feb 2019 00:49:00 -0000
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--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 gcc]$ cat /tmp/z.c
/* { dg-do compile { target { ! ia32 } } } */
/* { dg-options "-O2 -march=skylake-avx512" } */
extern long long i;
long long
foo1 (void)
{
register long long xmm16 __asm ("xmm16") = i;
asm volatile ("" : "+v" (xmm16));
register long long xmm17 __asm ("xmm17") = xmm16;
asm volatile ("" : "+v" (xmm17));
return xmm17;
}
/* { dg-final { scan-assembler-times
"vmovdqa32\[^\n\r]*xmm1\[67]\[^\n\r]*xmm1\[67]" 1 } } */
/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
[hjl@gnu-4 gcc]$ gcc -S -O2 -march=skylake-avx512 /tmp/z.c -mno-avx512vl
[hjl@gnu-4 gcc]$ cat z.s
.file "z.c"
.text
.p2align 4,,15
.globl foo1
.type foo1, @function
foo1:
.LFB0:
.cfi_startproc
vmovq i(%rip), %xmm16
vmovdqa64 %xmm16, %xmm17 <<< This is an AVX512VL instruction.
vmovq %xmm17, %rax
ret
.cfi_endproc
.LFE0:
.size foo1, .-foo1
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 gcc]$
>From gcc-bugs-return-633503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 00:51:05 2019
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jakub Jelinek from comment #14)
> Comment on attachment 45685 [details]
> I am testing this
>
> The movsi change doesn't look entirely right to me. While OImode or TImode
> is not allowed in ext sse regs unless AVX512VL, that is not the case for
> SImode, so for SImode if one or both operands are ext sse regs and
> !TARGET_AVX512VL, we need to use MODE_XI and use the pattern with %g1, %g0
> in there.
No need to set MODE_XI:
if (EXT_REX_SSE_REG_P (operands[0])
|| EXT_REX_SSE_REG_P (operands[1]))
{
if (TARGET_AVX512VL)
return "vmovdqa32\t{%1, %0|%0, %1}";
else
return "vmovdqa32\t{%g1, %0|%0, %g1}";
}
else
return "%vmovdqa\t{%1, %0|%0, %1}";
>From gcc-bugs-return-633504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 04:29:03 2019
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Subject: [Bug c++/88982] ICE in tsubst_pack_expansion, at cp/pt.c:12221
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c++/88982] ICE in tsubst_pack_expansion, at cp/pt.c:12221
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r247842. Before that:
88982.C: In instantiation of ‘struct A<int, short int>’:
88982.C:10:14: required from here
88982.C:2:73: error: type mismatch in nontype parameter pack
template<template<typename, Ts = 0> class ...Cs, Cs<Ts> ...Vs> struct B {
^
88982.C:2:73: error: could not convert template argument
‘#‘nontype_argument_pack’ not supported by dump_expr#<expression error>’ from
‘Cs<Ts>’ to ‘Cs<Ts>’
88982.C:2:73: error: type mismatch in nontype parameter pack
88982.C:2:73: error: could not convert template argument
‘#‘nontype_argument_pack’ not supported by dump_expr#<expression error>’ from
‘Cs<Ts>’ to ‘Cs<Ts>’
88982.C:10:16: error: ‘B’ in ‘struct A<int, short int>’ does not name a
template type
A<int, short>::B<Int, Char> b;
^
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Subject: [Bug c++/89048] constant evaluation in trailing return type rejected
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----------------------------------------------------------------------------
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
WAITING thus.
>From gcc-bugs-return-633507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 04:46:41 2019
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Subject: [Bug c++/88003] ICE on outside definition of inner function-local class in poplevel_class, at cp/name-lookup.c:4325
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed. Started with r185768, before:
88003.C:1:11: error: ‘test’ function uses ‘auto’ type specifier without
trailing return type
88003.C:8:23: error: ‘test’ was not declared in this scope
88003.C:8:23: error: ‘test’ was not declared in this scope
88003.C:8:28: error: invalid type in declaration before ‘;’ token
88003.C:9:8: error: ‘TN’ is not a class, namespace, or enumeration
88003.C:9:14: error: expected unqualified-id before ‘{’ token
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
That is, with this version of the test:
auto test() {
struct O {
struct N;
};
return O();
}
typedef decltype(test()) TN;
struct TN::N {};
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Subject: [Bug c++/67491] [meta-bug] concepts issues
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Bug 67491 depends on bug 87113, which changed state.
Bug 87113 Summary: ICE in adjust_temp_type at cp/constexpr.c:1205
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87113
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----------------------------------------------------------------------------
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r266877.
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Subject: [Bug c++/86961] ICE in finish_member_declaration when an alias template is used
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-633512-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 05:02:39 2019
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Subject: [Bug c++/77304] ICE on C++ code with invalid template parameter: in gimplify_expr, at gimplify.c:11260
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed now:
77304.C: In instantiation of ‘static void* A<T>::g() [with T = int]’:
77304.C:17:21: required from here
77304.C:9:12: error: invalid use of member function ‘template<S <anonymous> >
void A<T>::f() [with S <anonymous> = <enumerator>; T = int]’ (did you forget
the ‘()’ ?)
9 | return (void *) f < a >;
| ^~~~~~~~~~~~~~~~
| ()
I'll add the test.
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Subject: [Bug c++/71829] g++-6: internal compiler error: Segmentation fault (program cc1plus)
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GCC 6 is not supported anymore; no preprocessed source provided. Please reopen
if this still fails.
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Subject: [Bug c++/67823] ICE in tsubst_copy, at cp/pt.c:13635
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Assuming fixed, please reopen if that's not the case.
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From: "ganeshemb at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/89323] New: Asan memory leak detection on x86 platform
Date: Wed, 13 Feb 2019 05:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89323
Bug ID: 89323
Summary: Asan memory leak detection on x86 platform
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: ganeshemb at gmail dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Hi,
Asan memory leak detection does not seem to on x86 platform.
Sample C program with memory leak
cat asantest.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main (int argc, char *argv[])
{
char *name = (char*) malloc(10);
strcpy(name, argv[1]);
printf("Hello, %s!\n", name);
return 0;
}
`gcc -g -m32 -fsanitize=address -fno-omit-frame-pointer asantest.c -o santest`
```
objdump -a asantest
asantest: file format elf32-i386
```
```
ldd asantest
linux-gate.so.1 (0xf778a000)
libasan.so.3 => /usr/lib32/libasan.so.3 (0xf71e0000)
```
```
gcc --version
gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
```
when program run as shown below , no leaks were detected.
```
./asantest world
Hello, world!
```
when program run with ASAN_OPTIONS , following error is shown.
```
ASAN_OPTIONS=detect_leaks=1 ./asantest world
==8192==AddressSanitizer: detect_leaks is not supported on this platform.
```
My system info
```
lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
```
```
uname -r
4.9.0-8-amd64
```
works for current clang:
clang-6.0 -g -fsanitize=address -fno-omit-frame-pointer -m32 asantest.c &&
./a.out
AddressSanitizer:DEADLYSIGNAL
=================================================================
==6318==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000 (pc
0xf74f2a66 bp 0xfff26cb8 sp 0xfff26854 T0)
Thanks in advance.
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Subject: [Bug sanitizer/89323] Asan memory leak detection on x86 platform
Date: Wed, 13 Feb 2019 05:43:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>works for current clang:
Have you tried a current gcc because compare a 3 year old GCC to a 6 month old
clang is not right.
>From gcc-bugs-return-633517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 05:56:22 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Wed, 13 Feb 2019 05:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #17 from Alan Modra <amodra at gmail dot com> ---
> On platforms where varargs have a different calling
> signature from normal functions, this would be an ABI change.
True, but in C terms, gfortran is currently doing this:
void f (char *res, int reslen);
..
f (res, 20, &c, &i1, &i2, &i3, &i4, &i5, &i6);
That's why I said we have "lying prototypes".
The patch in comment #12 changes things to
void f (char *res, int reslen, ...);
..
f (res, 20, &c, &i1, &i2, &i3, &i4, &i5, &i6);
Which at least makes the prototype and call compatible in that translation
unit. We have ABI violations in both cases as neither prototype matches the
actual function definition. Yes, my patch is just a hack, but..
> It would probably make more sense to build the decl from the call
> itself.
This would require major surgery, I think. Another option would be to pass
info to the backend that the call is really not prototyped despite the presence
of those "hidden" args.
For now, I'm going to post a backend patch for this problem, in
rs6000_function_parms_need_stack:
/* FIXME: Fortran arg lists can contain hidden parms, fooling
prototype_p into saying the function is prototyped when in fact
the number and type of args is unknown. See PR 87689. */
if (!incoming && (strcmp (lang_hooks.name, "GNU F77") == 0
|| lang_GNU_Fortran ()))
return true;
>From gcc-bugs-return-633518-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:28:32 2019
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Subject: [Bug target/89324] New: ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Wed, 13 Feb 2019 06:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89324
Bug ID: 89324
Summary: ICE in extract_constrain_insn, at recog.c:2211 on
aarch64
Product: gcc
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Following is causing ICE:
$ cat ice.f90
module a
contains
pure function myotherlen()
myotherlen = 99
end
subroutine b
characterx
block
character(myotherlen()) c
c = "abc"
x = c
end block
end
end
$ aarch64-linux-gnu-gcc ice.f90 -fsanitize=undefined -fno-schedule-insns -O2 -c
ice.f90
ice.f90:14:0:
14 | end
|
Error: insn does not satisfy its constraints:
(insn 85 16 22 2 (parallel [
(set (reg:CC 66 cc)
(compare:CC (reg/f:DI 31 sp)
(const_int -3 [0xfffffffffffffffd])))
(set (reg/f:DI 19 x19 [110])
(plus:DI (reg/f:DI 31 sp)
(const_int 3 [0x3])))
]) "ice.f90":10:0 314 {subdi3_compare1_imm}
(nil))
during RTL pass: cprop_hardreg
ice.f90:14:0: internal compiler error: in extract_constrain_insn, at
recog.c:2211
0x5d848d _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/rtl-error.c:108
0x5d84b3 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/rtl-error.c:118
0x5d7a28 extract_constrain_insn(rtx_insn*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/recog.c:2211
0xabec97 copyprop_hardreg_forward_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/regcprop.c:801
0xabf7e4 execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-aarch64/build/gcc/regcprop.c:1307
>From gcc-bugs-return-633519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:29:41 2019
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Subject: [Bug target/89324] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target| |aarch64-linux-gnu
Last reconfirmed| |2019-2-13
CC| |jgreenhalgh at gcc dot gnu.org,
| |ktkachov at gcc dot gnu.org,
| |ramana at gcc dot gnu.org
Host| |x86_64-pc-linux-gnu
Target Milestone|--- |9.0
>From gcc-bugs-return-633520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:34:31 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Wed, 13 Feb 2019 06:34:00 -0000
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please attach WIP patch you have?
>From gcc-bugs-return-633521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:40:27 2019
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From: "thehans at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89325] New: False warnings about "optimization attribute" on operators when -fno-ipa-cp-clone
Date: Wed, 13 Feb 2019 06:40:00 -0000
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Bug ID: 89325
Summary: False warnings about "optimization attribute" on
operators when -fno-ipa-cp-clone
Product: gcc
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Created attachment 45687
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45687&action=edit
minimum test case
This is an issue I was having where g++ was outputting over 56,000 spurious
warnings for a project I was building.
I found that the problem only came from including Eigen/Core header amongst
various project headers that declared operators.
I was able to use singledelta to minimize the test case down to the attached
file.
After the #pragma which comes from Eigen, it seems to break g++'s ability to
differentiate between different operator signatures and just warns that they
are all previously defined with different attributes.
Here is the warning output from g++:
testcase-min.i:4:37: warning: optimization attribute on 'int& operator<<(int&,
const B&)' follows definition but the attribute doesn't match [-Wattributes]
int &operator<<(int &i, const B &ast);
^
testcase-min.i:1:35: note: previous definition of 'int& operator<<(int&, const
A&)' was here
class A { private: friend int &operator<<(int &i, const A &value) { return
i; } };
^~~~~~~~
>From gcc-bugs-return-633522-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:43:04 2019
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Subject: [Bug sanitizer/89323] Asan memory leak detection on x86 platform
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I can confirm that LSAN does not work for -m32 on current trunk. It was enabled
in:
commit 1e39eaad45fc92b49e189badf0a5a675fbfb4ad0
Author: Francis Ricci <francisjricci@gmail.com>
Date: Tue Mar 28 21:56:44 2017 +0000
Enable i386 builds for darwin lsan
Summary:
Now that __thread is no longer used for lsan on darwin, i386 builds
can be enabled.
Reviewers: kcc, kubamracek
Subscribers: danalbert, srhines, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D29995
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@298946
91177308-0d34-0410-b5e6-96231b3b80d8
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Subject: [Bug sanitizer/89323] Asan memory leak detection on x86 platform
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
> works for current clang:
>
> clang-6.0 -g -fsanitize=address -fno-omit-frame-pointer -m32 asantest.c &&
> ./a.out
>
> AddressSanitizer:DEADLYSIGNAL
> =================================================================
> ==6318==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000 (pc
> 0xf74f2a66 bp 0xfff26cb8 sp 0xfff26854 T0)
>
>
No, you forgot to provide ./a.out argument. That's why you see a SEGV.
Please try latest clang release (7) and test it. If it's failing, please report
upstream bug https://github.com/google/sanitizers/issues.
>From gcc-bugs-return-633524-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 06:58:15 2019
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Subject: [Bug lto/88858] ICE in rtl_verify_fallthru, at cfgrtl.c:2930 in Firefox build with LTO and PGO
Date: Wed, 13 Feb 2019 06:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88858
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Feb 13 06:57:38 2019
New Revision: 268835
URL: https://gcc.gnu.org/viewcvs?rev=268835&root=gcc&view=rev
Log:
Remove a barrier when EDGE_CROSSING is removed (PR lto/88858).
2019-02-13 Martin Liska <mliska@suse.cz>
PR lto/88858
* cfgrtl.c (remove_barriers_from_footer): New function.
(try_redirect_by_replacing_jump): Use it.
(cfg_layout_redirect_edge_and_branch): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgrtl.c
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Subject: [Bug lto/88858] ICE in rtl_verify_fallthru, at cfgrtl.c:2930 in Firefox build with LTO and PGO
Date: Wed, 13 Feb 2019 06:59:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Known to fail| |7.4.0, 8.2.0
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
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From: "martin at netbsd dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89312] snprintf warning is unparsable and not confusing
Date: Wed, 13 Feb 2019 07:06:00 -0000
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--- Comment #4 from Martin Husemann <martin at netbsd dot org> ---
This is scary.
So in the future there will be valid reasons for the truncation warning, but
you are not offering any way to suppress the totally useless false positives?
My problem with this warning is that (as of gcc 7.4) it has a S/N ratio very
close to 0. snprintf will truncate the output? Yes, that is what the standard
says and what I expect from it.
There is no usefull more targeted workaround than turning it off.
I actually did sucessfully quell the warning with this idiom:
char buf[STRLEN];
int r = snprintf(buf, sizeof(buf), format, ....);
if (r >= sizeof(buf))
buf[sizeof(buf)-1] = 0;
but that is of course totally stupid (and hopefully gcc will eliminate the if
() part completely (but since the warning goes away, it seems not to do that).
We always compile all stuff with -Wall and -Werror, we even dealt with the very
painfull (and much too simplistic) case fallthrough checker. But with the
format truncation there is no option but to either make the code worse or turn
it off completely.
>From gcc-bugs-return-633527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 07:34:48 2019
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From: "Hi-Angel at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89326] New: [RFE] Highlight `required from here` in compile-error output
Date: Wed, 13 Feb 2019 07:34:00 -0000
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Bug ID: 89326
Summary: [RFE] Highlight `required from here` in compile-error
output
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Compile-errors of constructors and templates can give a lot of output. Usually
the first thing in debugging is to figure out where the offending code is used.
This place in output is marked with `required from here`, but it's very hard to
find the magic words in the output, even more so given there are sentences
"required from" without "here" that go along the call stack.
Usually just below the "required from here" is a highlighted word "error", but
it often appears in other places as well.
# Steps to reproduce (in terms of terminal commands):
$ cat test.cpp
#include <list>
struct NoCopy {
NoCopy(const NoCopy&) = delete;
NoCopy(NoCopy&&) = default;
};
int main() {
// Child ch{{}};
std::list<NoCopy> l = {NoCopy{}};
}
â•â”€constantine@constantine-N61Ja /tmp ‹node-› ‹›
╰─$ g++ test.cpp
In file included from
/usr/include/c++/8.2.1/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
from /usr/include/c++/8.2.1/bits/allocator.h:46,
from /usr/include/c++/8.2.1/list:61,
from test.cpp:1:
/usr/include/c++/8.2.1/ext/new_allocator.h: In instantiation of ‘void
__gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = NoCopy;
_Args = {const NoCopy&}; _Tp = std::_List_node<NoCopy>]’:
/usr/include/c++/8.2.1/bits/alloc_traits.h:475:4: required from ‘static
void std::allocator_traits<std::allocator<_Tp1>
>::construct(std::allocator_traits<std::allocator<_Tp1> >::allocator_type&,
_Up*, _Args&& ...) [with _Up = NoCopy; _Args = {const NoCopy&}; _Tp =
std::_List_node<NoCopy>; std::allocator_traits<std::allocator<_Tp1>
>::allocator_type = std::allocator<std::_List_node<NoCopy> >]’
/usr/include/c++/8.2.1/bits/stl_list.h:645:33: required from
‘std::__cxx11::list<_Tp, _Alloc>::_Node* std::__cxx11::list<_Tp,
_Alloc>::_M_create_node(_Args&& ...) [with _Args = {const NoCopy&}; _Tp =
NoCopy; _Alloc = std::allocator<NoCopy>; std::__cxx11::list<_Tp, _Alloc>::_Node
= std::_List_node<NoCopy>]’
/usr/include/c++/8.2.1/bits/stl_list.h:1903:10: required from ‘void
std::__cxx11::list<_Tp, _Alloc>::_M_insert(std::__cxx11::list<_Tp,
_Alloc>::iterator, _Args&& ...) [with _Args = {const NoCopy&}; _Tp = NoCopy;
_Alloc = std::allocator<NoCopy>; std::__cxx11::list<_Tp, _Alloc>::iterator =
std::_List_iterator<NoCopy>]’
/usr/include/c++/8.2.1/bits/stl_list.h:1235:4: required from ‘void
std::__cxx11::list<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {const
NoCopy&}; _Tp = NoCopy; _Alloc = std::allocator<NoCopy>]’
/usr/include/c++/8.2.1/bits/stl_list.h:1832:6: required from ‘void
std::__cxx11::list<_Tp, _Alloc>::_M_initialize_dispatch(_InputIterator,
_InputIterator, std::__false_type) [with _InputIterator = const NoCopy*; _Tp =
NoCopy; _Alloc = std::allocator<NoCopy>]’
/usr/include/c++/8.2.1/bits/stl_list.h:769:9: required from
‘std::__cxx11::list<_Tp, _Alloc>::list(std::initializer_list<_Tp>, const
allocator_type&) [with _Tp = NoCopy; _Alloc = std::allocator<NoCopy>;
std::__cxx11::list<_Tp, _Alloc>::allocator_type = std::allocator<NoCopy>]’
test.cpp:10:36: required from here
/usr/include/c++/8.2.1/ext/new_allocator.h:136:4: error: use of deleted
function ‘NoCopy::NoCopy(const NoCopy&)’
{ ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test.cpp:4:5: note: declared here
NoCopy(const NoCopy&) = delete;
# Expected
"required from here" is highlighted with some color
# Actual
"required from here" is of the same font/color as the rest of the text.
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Subject: [Bug c++/89325] False warnings about "optimization attribute" on operators when -fno-ipa-cp-clone
Date: Wed, 13 Feb 2019 07:53:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
CC| |marxin at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |7.4.0, 8.2.0, 9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r236129 and is probably hidden on trunk due to r265744.
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From: "paradox_ptr at protonmail dot ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89299] __attribute__ cleanup does not accept template function
Date: Wed, 13 Feb 2019 08:07:00 -0000
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--- Comment #6 from paradox_ptr at protonmail dot ch ---
(In reply to Martin Sebor from comment #4)
> I'm curious about the use case: can you describe what you are using
> the attribute for in C++?
I don't have a meaningful use case for you.
Was merging old C program into C++ codebase, and was very surprised when this
part did not compile.
>From gcc-bugs-return-633530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:15:19 2019
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Subject: [Bug fortran/78983] [7/8/9 Regression] ICE with CAF-DT with allocatable member
Date: Wed, 13 Feb 2019 08:15:00 -0000
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--- Comment #10 from Damian Rouson <damian at sourceryinstitute dot org> ---
I see no ICE in testing the code from Comment 3 using fortran 7.3.0, 8.2.0, and
9.0.1. I believe this can be closed.
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Subject: [Bug other/89327] New: Joined options without RejectsNegative
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89327
Bug ID: 89327
Summary: Joined options without RejectsNegative
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
While for some Joined options starting with m, W or f the negative options make
perfect sense, e.g. -fno-builtin-malloc,
-fno-sanitize-recover=signed-integer-overflow etc., for the following ones I
wonder if it isn't just an omission.
Thoughts on this?
./config/riscv/riscv.opt:msmall-data-limit=
./config/riscv/riscv.opt:Target Joined Separate UInteger Var(g_switch_value)
Init(8)
./config/darwin.opt:mmacosx-version-min=
./config/darwin.opt:Target Joined Report Var(darwin_macosx_version_min)
Init(DEF_MIN_OSX_VERSION)
./go/lang.opt:fgo-optimize-
./go/lang.opt:Go Joined
./go/lang.opt:fgo-debug-escape
./go/lang.opt:Go Joined UInteger Var(go_debug_escape_level) Init(0)
./common.opt:fhelp=
./common.opt:Common Driver Joined Alias(-help=)
./common.opt:fdiagnostics-minimum-margin-width=
./common.opt:Common Joined UInteger Var(diagnostics_minimum_margin_width)
Init(6)
./common.opt:foffload=
./common.opt:Common Driver Joined MissingArgError(options or targets missing
after %qs)
./common.opt:fpatchable-function-entry=
./common.opt:Common Joined Optimization
./common.opt:fself-test=
./common.opt:Common Undocumented Joined Var(flag_self_test)
./c-family/c.opt:Walloc-size-larger-than=
./c-family/c.opt:C ObjC C++ LTO ObjC++ Var(warn_alloc_size_limit) Joined
Host_Wide_Int ByteSize Warning Init(HOST_WIDE_INT_MAX)
./c-family/c.opt:Walloca-larger-than=
./c-family/c.opt:C ObjC C++ LTO ObjC++ Var(warn_alloca_limit) Warning Joined
Host_Wide_Int ByteSize Init(HOST_WIDE_INT_MAX)
./c-family/c.opt:Wvla-larger-than=
./c-family/c.opt:C ObjC C++ LTO ObjC++ Var(warn_vla_limit) Warning Joined
Host_Wide_Int ByteSize Init(HOST_WIDE_INT_MAX)
./c-family/c.opt:fconstant-string-class=
./c-family/c.opt:ObjC ObjC++ Joined MissingArgError(no class name specified
with %qs)
./c-family/c.opt:fname-mangling-version-
./c-family/c.opt:C++ ObjC++ Joined Deprecated
./c-family/c.opt:fopenacc-dim=
./c-family/c.opt:C ObjC C++ ObjC++ LTO Joined Var(flag_openacc_dims)
./c-family/c.opt:femit-struct-debug-detailed=
./c-family/c.opt:C ObjC C++ ObjC++ Joined
./fortran/lang.opt:fopenacc-dim=
./fortran/lang.opt:Fortran LTO Joined Var(flag_openacc_dims)
./lto/lang.opt:fltrans-output-list=
./lto/lang.opt:LTO Joined Var(ltrans_output_list)
./lto/lang.opt:fresolution=
./lto/lang.opt:LTO Joined
>From gcc-bugs-return-633532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:22:07 2019
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Wed, 13 Feb 2019 08:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #18 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 13, 2019 6:56:15 AM GMT+01:00, amodra at gmail dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
>
>--- Comment #17 from Alan Modra <amodra at gmail dot com> ---
>> On platforms where varargs have a different calling
>> signature from normal functions, this would be an ABI change.
>
>True, but in C terms, gfortran is currently doing this:
>void f (char *res, int reslen);
>..
> f (res, 20, &c, &i1, &i2, &i3, &i4, &i5, &i6);
>That's why I said we have "lying prototypes".
>
>The patch in comment #12 changes things to
>void f (char *res, int reslen, ...);
>..
> f (res, 20, &c, &i1, &i2, &i3, &i4, &i5, &i6);
>
>Which at least makes the prototype and call compatible in that
>translation
>unit.
Both indeed look wrong. Afaics if Fortran doesn't require a visible function
definition or declaration it indeed has to build one from the actual call. In
theory it could use a unprototyped function declaration void f() and then use
only a
CALL_EXPR_FNTYPE function type matching the call signature (and hope backends
will be happy with that). That has the advantage of not needing to deal with
mismatches from multiple calls
(multiple decls would be even worse I think)
We have ABI violations in both cases as neither prototype
>matches the
>actual function definition. Yes, my patch is just a hack, but..
>
>> It would probably make more sense to build the decl from the call
>> itself.
>This would require major surgery, I think. Another option would be to
>pass
>info to the backend that the call is really not prototyped despite the
>presence
>of those "hidden" args.
>
>For now, I'm going to post a backend patch for this problem, in
>rs6000_function_parms_need_stack:
>
> /* FIXME: Fortran arg lists can contain hidden parms, fooling
> prototype_p into saying the function is prototyped when in fact
> the number and type of args is unknown. See PR 87689. */
> if (!incoming && (strcmp (lang_hooks.name, "GNU F77") == 0
> || lang_GNU_Fortran ()))
> return true;
>From gcc-bugs-return-633533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:41:35 2019
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From: "mpoulhies at kalray dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89328] New: static chain made mandatory
Date: Wed, 13 Feb 2019 08:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89328
Bug ID: 89328
Summary: static chain made mandatory
Product: gcc
Version: 7.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: mpoulhies at kalray dot eu
Target Milestone: ---
Since r217769, a target without support for static chain will not work.
Previous this change, the message
```
nested functions not supported on this target
```
was displayed only when trying to build something using nested functions.
After this patch, the error is raised for all inputs. I guess because the
following test has been removed:
```
rtx
-default_static_chain (const_tree fndecl, bool incoming_p)
+default_static_chain (const_tree ARG_UNUSED (fndecl_or_type), bool incoming_p)
{
- if (!DECL_STATIC_CHAIN (fndecl))
- return NULL;
-
if (incoming_p)
{
```
I guess this was not spotted as it looks like all targets in gcc tree have
static chain support.
This has been a problem while updating a private port from gcc 4.9 to gcc 7. I
could not verify the issue is still in trunk but a quick look at the code let
me think it still is.
>From gcc-bugs-return-633534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:46:13 2019
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Subject: [Bug target/89290] [8/9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Wed, 13 Feb 2019 08:46:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 13 08:45:37 2019
New Revision: 268837
URL: https://gcc.gnu.org/viewcvs?rev=268837&root=gcc&view=rev
Log:
PR target/89290
* config/i386/predicates.md (x86_64_immediate_operand): Allow
TLS UNSPECs offsetted by signed 32-bit CONST_INT even with
-mcmodel=large.
* gcc.target/i386/pr89290.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89290.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/predicates.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:47:47 2019
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From: "konstantin.vladimirov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86991] [8 Regression] ICE in vectorizable_reduction, at tree-vect-loop.c:6919
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86991
--- Comment #9 from Tilir <konstantin.vladimirov at gmail dot com> ---
One more test case:
int b[11], e[11], c, d;
void f() {
unsigned g, h;
for (; g < 11; g += 2) {
c = 2;
for (; c; c += 3) {
h = 1;
for (; h < 11; h++)
e[h] = e[h] + d - b[g];
}
}
}
>From gcc-bugs-return-633536-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:54:42 2019
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Subject: [Bug middle-end/89328] static chain made mandatory
Date: Wed, 13 Feb 2019 08:54:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed in GCC 8.0. See bug 83423.
*** This bug has been marked as a duplicate of bug 83423 ***
>From gcc-bugs-return-633537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 08:54:42 2019
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Subject: [Bug middle-end/83423] default_static_chain is sorry for non-nested functions
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpoulhies at kalray dot eu
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89328 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:01:20 2019
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89306
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.2.0, 9.0
Target Milestone|--- |9.0
>From gcc-bugs-return-633539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:03:33 2019
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From: "jungmin.song at nuance dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89329] New: "-O2" optimization causes a infinite loop
Date: Wed, 13 Feb 2019 09:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89329
Bug ID: 89329
Summary: "-O2" optimization causes a infinite loop
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jungmin.song at nuance dot com
Target Milestone: ---
Created attachment 45688
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45688&action=edit
Sample code generating this issue
With O2 optimization, an infinite loop is generated from the attached code.
for (i = 0; i < pStruct->count1; ++i) {
unsigned short pWord = pStruct->array2[i];
CheckArray1_ext(pWord);
}
for (; i < ARR_MAX; ++i) {
pStruct->array1[i] = i;
}
The generated code with "arm-none-eabi-gcc.exe -S -O2 compileOptimizationErr.c
-o compileOptimizationErr.c.O2.s" checks only if it is equal with ARR_MAX for
the second loop. If the value of 'i' is over ARR_MAX before the second loop,
there is no condition to exit the loop.
>From gcc-bugs-return-633540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:08:58 2019
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Subject: [Bug c++/89326] [RFE] Highlight `required from here` in compile-error output
Date: Wed, 13 Feb 2019 09:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89326
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I like this idea.
>From gcc-bugs-return-633541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:09:09 2019
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Subject: [Bug c++/89326] [RFE] Highlight `required from here` in compile-error output
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
>From gcc-bugs-return-633542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:14:54 2019
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Subject: [Bug tree-optimization/89329] "-O2" optimization causes a infinite loop
Date: Wed, 13 Feb 2019 09:14:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c |tree-optimization
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> If the value of 'i' is over ARR_MAX before the second loop, there is no
> condition to exit the loop.
Yes because i cannot be over ARR_MAX as that would have involved undefined
behavior while accessing pStruct->array2.
>From gcc-bugs-return-633543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:39:46 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Wed, 13 Feb 2019 09:39:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |8.2.1
Summary|ICE in |[9 Regression] ICE in
|extract_constrain_insn, at |extract_constrain_insn, at
|recog.c:2211 on aarch64 |recog.c:2211 on aarch64
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.
>From gcc-bugs-return-633544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:46:06 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Wed, 13 Feb 2019 09:46:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matmal01 at gcc dot gnu.org
--- Comment #2 from ktkachov at gcc dot gnu.org ---
The sub<mode>3_compare1_imm pattern was introduced for GCC 9. It's probably
something going wrong with the constraints. Matthew, could you take a look
please?
>From gcc-bugs-return-633545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:50:26 2019
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Looking at this now.
>From gcc-bugs-return-633546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 09:53:07 2019
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #13)
> So if the two bugs have the same root cause, it seems to be a problem in
> __weak_count::_M_assign, failing to set _M_pi here:
>
> __weak_count&
> operator=(const __shared_count<_Lp>& __r) noexcept
> {
> _Sp_counted_base<_Lp>* __tmp = __r._M_pi;
> if (__tmp != nullptr)
> __tmp->_M_weak_add_ref();
> if (_M_pi != nullptr)
> _M_pi->_M_weak_release();
> _M_pi = __tmp;
> return *this;
> }
This ends up inlined into:
std::__shared_ptr<blob, 0>::__shared_ptr<std::allocator<blob> > (struct
__shared_ptr * const this, struct _Sp_alloc_shared_tag __tag)
and the GIMPLE dumps for -O1 -fno-tree-pta and -O1 do look significantly
different, explaining why _M_weak_this._M_refcount._M_pi doesn't get set.
>From gcc-bugs-return-633547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 10:03:25 2019
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Subject: [Bug tree-optimization/89223] [7/8 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Wed, 13 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89223
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 13 10:02:47 2019
New Revision: 268838
URL: https://gcc.gnu.org/viewcvs?rev=268838&root=gcc&view=rev
Log:
2019-02-13 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-data-ref.c
branches/gcc-8-branch/gcc/tree-ssa-loop-split.c
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/89253] [8 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
Date: Wed, 13 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89253
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 13 10:02:47 2019
New Revision: 268838
URL: https://gcc.gnu.org/viewcvs?rev=268838&root=gcc&view=rev
Log:
2019-02-13 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-data-ref.c
branches/gcc-8-branch/gcc/tree-ssa-loop-split.c
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/88739] [7/8 Regression] Big-endian union bug
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88739
--- Comment #57 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 13 10:02:47 2019
New Revision: 268838
URL: https://gcc.gnu.org/viewcvs?rev=268838&root=gcc&view=rev
Log:
2019-02-13 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/89253
* tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
duplicate the loop.
* gfortran.dg/pr89253.f: New testcase.
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
* gcc.c-torture/execute/pr88739.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-data-ref.c
branches/gcc-8-branch/gcc/tree-ssa-loop-split.c
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/89253] [8 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
Date: Wed, 13 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89253
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/89330] New: IPA inliner touches released cgraph_edges
Date: Wed, 13 Feb 2019 10:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89330
Bug ID: 89330
Summary: IPA inliner touches released cgraph_edges
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 45689
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45689&action=edit
Sanity check
Using the sanity check one can see following ICE:
$ g++ 1.ii 2.ii -shared -O2 -flto=8 -Wno-odr
removing edge: 0x7ffff7884420
removing edge: 0x7ffff78843c0
removing edge: 0x7ffff7884360
removing edge: 0x7ffff7884300
removing edge: 0x7ffff7884420
removing edge: 0x7ffff78843c0
removing edge: 0x7ffff7884360
removing edge: 0x7ffff7884420
removing edge: 0x7ffff78843c0
removing edge: 0x7ffff7884360
removing edge: 0x7ffff7884300
removing edge: 0x7ffff7884300
removing edge: 0x7ffff7525480
removing edge: 0x7ffff7525480
add_new_edges_to_heap: 0x7ffff7525480
during IPA pass: inline
lto1: internal compiler error: in add_new_edges_to_heap, at ipa-inline.c:1631
0x748286 add_new_edges_to_heap
../../gcc/ipa-inline.c:1631
0x1493d48 inline_small_functions
../../gcc/ipa-inline.c:2075
0x1493d48 ipa_inline
../../gcc/ipa-inline.c:2535
0x1493d48 execute
../../gcc/ipa-inline.c:2943
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Wed, 13 Feb 2019 10:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89330
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45690
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45690&action=edit
test-case
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Wed, 13 Feb 2019 10:13:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45691
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45691&action=edit
test-case
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Subject: [Bug c++/88986] [7/8/9 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'error_mark' in member_vec_binary_search, at cp/name-lookup.c:1136
Date: Wed, 13 Feb 2019 10:35:00 -0000
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Feb 13 10:34:49 2019
New Revision: 268839
URL: https://gcc.gnu.org/viewcvs?rev=268839&root=gcc&view=rev
Log:
/cp
2019-02-13 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88986
* decl.c (make_typename_type): Allow for TYPE_PACK_EXPANSION as
context (the first argument).
* pt.c (tsubst, case TYPENAME_TYPE): Handle TYPE_PACK_EXPANSION
as context.
/testsuite
2019-02-13 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88986
* g++.dg/cpp1z/using4.C: New.
* g++.dg/cpp1z/using5.C: Likewise.
* g++.dg/cpp1z/using6.C: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/using4.C
trunk/gcc/testsuite/g++.dg/cpp1z/using5.C
trunk/gcc/testsuite/g++.dg/cpp1z/using6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88986] [7/8 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'error_mark' in member_vec_binary_search, at cp/name-lookup.c:1136
Date: Wed, 13 Feb 2019 10:37:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE: |[7/8 Regression] ICE: tree
|tree check: expected tree |check: expected tree that
|that contains 'decl |contains 'decl minimal'
|minimal' structure, have |structure, have
|'error_mark' in |'error_mark' in
|member_vec_binary_search, |member_vec_binary_search,
|at cp/name-lookup.c:1136 |at cp/name-lookup.c:1136
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
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Subject: [Bug c++/87113] ICE in adjust_temp_type at cp/constexpr.c:1205
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--- Comment #4 from smehringer <svenja.mehringer at gmail dot com> ---
Thanks for the fix!
Is the fix included only in GCC 9 or also in GCC 7 and 8?
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Wed, 13 Feb 2019 10:47:00 -0000
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Before fre3 we have:
_24 = malloc (40);
...
MEM[(struct __allocated_ptr *)&__guard clique 9 base 1]._M_ptr = _24;
_15 = __guard._M_ptr;
...
_16 = &MEM[(struct __aligned_buffer *)_15 + 16B]._M_storage;
...
MEM[(struct __weak_count *)_15 + 24B clique 8 base 1]._M_pi = 0B;
...
MEM[(struct __shared_count *)this_6(D) + 8B clique 2 base 1]._M_pi = _15;
MEM[(struct blob * &)this_6(D) clique 2 base 0] = _16;
...
_3 = MEM[(struct __shared_ptr *)this_6(D) clique 1 base 1]._M_ptr;
...
__tmp_25 = MEM[(const struct __shared_count &)this_6(D) + 8 clique 10 base
1]._M_pi;
...
MEM[(struct __weak_count *)_3 + 8B clique 10 base 0]._M_pi = __tmp_25;
fre3 makes:
_24 = malloc (40);
...
_16 = &MEM[(struct __aligned_buffer *)_24 + 16B]._M_storage;
...
MEM[(struct __weak_count *)_24 + 24B clique 8 base 1]._M_pi = 0B;
...
MEM[(struct __shared_count *)this_6(D) + 8B clique 2 base 1]._M_pi = _24;
MEM[(struct blob * &)this_6(D) clique 2 base 0] = _16;
...
_19 = MEM[(struct __weak_count *)_24 + 24B clique 6 base 1]._M_pi;
...
MEM[(struct __weak_count *)_16 + 8B clique 10 base 0]._M_pi = _24;
out of this and finally dce2 deletes that last store:
Eliminating unnecessary statements:
Deleting : MEM[(struct __weak_count *)_16 + 8B]._M_pi = _24;
With -O1 -fno-tree-dce -fno-tree-dse there are no leaks.
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Those DCE or DSE removals of the store look weird. In the alias info we have:
# PT = null { D.5120 } (escaped, escaped heap)
# ALIGN = 8, MISALIGN = 0
# USE = nonlocal null { D.4247 D.5109 D.5120 D.5121 } (nonlocal, escaped,
escaped heap, interposable)
# CLB = nonlocal null { D.4247 D.5109 D.5120 D.5121 } (nonlocal, escaped,
escaped heap, interposable)
_24 = malloc (40);
...
# PT = null { D.5109 D.5120 } (escaped)
_16 = &MEM[(struct __aligned_buffer *)_24 + 16B]._M_storage;
...
<bb 18> [local count: 488552530]:
MEM[(struct __weak_count *)_16 + 8B clique 10 base 0]._M_pi = _24;
<bb 19> [local count: 1073741824]:
return;
When the pointer is escaped, how can it DCE a store to it?
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Subject: [Bug rtl-optimization/49054] useless cmp+jmp generated for switch when "default:" is unreachable
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--- Comment #6 from Alexandre Duret-Lutz <adl at gnu dot org> ---
I revisited this with GCC 8.2.1 (or more precisely the version called
gcc-8.2.0-20 in Debian).
The original code I gave now generate a jump table with no extra comparison:
0000000000000000 <baz>:
0: 48 8d 15 00 00 00 00 lea 0x0(%rip),%rdx # 7 <baz+0x7>
7: 89 ff mov %edi,%edi
9: 48 63 04 ba movslq (%rdx,%rdi,4),%rax
d: 48 01 d0 add %rdx,%rax
10: ff e0 jmpq *%rax
12: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
18: e9 00 00 00 00 jmpq 1d <baz+0x1d>
1d: 0f 1f 00 nopl (%rax)
20: e9 00 00 00 00 jmpq 25 <baz+0x25>
25: 0f 1f 00 nopl (%rax)
28: e9 00 00 00 00 jmpq 2d <baz+0x2d>
2d: 0f 1f 00 nopl (%rax)
30: e9 00 00 00 00 jmpq 35 <baz+0x35>
35: 0f 1f 00 nopl (%rax)
38: e9 00 00 00 00 jmpq 3d <baz+0x3d>
However if I change the code to:
unsigned f(void);
unsigned g(void);
unsigned h(void);
unsigned i(void);
unsigned j(void);
unsigned int baz(unsigned int id)
{
switch (id)
{
case 0:
return f();
case 1:
return g();
case 23456: // <- changed
return h();
case 3:
return i();
case 4:
return j();
default:
__builtin_unreachable();
}
}
Then a non-optimal decision tree is generated:
0000000000000000 <baz>:
0: 83 ff 03 cmp $0x3,%edi
3: 74 3b je 40 <baz+0x40>
5: 77 09 ja 10 <baz+0x10>
7: 85 ff test %edi,%edi
9: 75 15 jne 20 <baz+0x20>
b: e9 00 00 00 00 jmpq 10 <baz+0x10>
10: 83 ff 04 cmp $0x4,%edi
13: 75 1b jne 30 <baz+0x30>
15: e9 00 00 00 00 jmpq 1a <baz+0x1a>
1a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
20: 83 ff 01 cmp $0x1,%edi
23: 75 20 jne 45 <baz+0x45>
25: e9 00 00 00 00 jmpq 2a <baz+0x2a>
2a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
30: 81 ff a0 5b 00 00 cmp $0x5ba0,%edi
36: 75 0d jne 45 <baz+0x45>
38: e9 00 00 00 00 jmpq 3d <baz+0x3d>
3d: 0f 1f 00 nopl (%rax)
40: e9 00 00 00 00 jmpq 45 <baz+0x45>
When we reach line 0x20, we know that 0<%edi<3 so the comparison against 1 is
unnecessary. Similarly, the comparison on line 0x30 is unnecessary as %edi
must be equal to 23456 at this point.
I'd expect the effect of __builtin_unreachable() to cause lines
0x20,0x23,0x30,0x36 to be removed from that output.
It looks like that when building a decision tree over a switch, the presence of
an unreachable default would allow to get rid of a comparison for all leaves of
the tree.
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Subject: [Bug middle-end/89303] [8 Regression] memory leak with shared_ptr and enable_shared_from_this
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On:
# .MEM_64 = VDEF <.MEM_63>
MEM[(struct __weak_ptr *)_16]._M_ptr = _16;
stmt_may_clobber_global_p (stmt) returns false.
(gdb) p pt_solution_includes_global
(&cfun->gimple_df->ssa_names->m_vecdata[16]->ssa_name.info.ptr_info->pt)
$99 = false
(gdb) p pt_solution_includes_global
(&cfun->gimple_df->ssa_names->m_vecdata[24]->ssa_name.info.ptr_info->pt)
$100 = true
This makes no sense to me, when _16 is &MEM[(struct __aligned_buffer *)_24 +
16B]._M_storage, thus effectively just POINTER_PLUS_EXPR from _24, it could
have different alignment, but how it can have different points-to info?
(gdb) p debug_tree (cfun->gimple_df->ssa_names->m_vecdata[16])
<ssa_name 0x7fffea38eb88
type <pointer_type 0x7fffea81c000
type <void_type 0x7fffea813f18 void type_6 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffea813f18
pointer_to_this <pointer_type 0x7fffea81c000>>
public unsigned type_6 DI
size <integer_cst 0x7fffea7f5e28 constant 64>
unit-size <integer_cst 0x7fffea7f5e40 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffea81c000
pointer_to_this <pointer_type 0x7fffea8247e0>>
visited
def_stmt _16 = &MEM[(struct __aligned_buffer *)_24 + 16B]._M_storage;
version:16
ptr-info 0x7fffea39a288>
(gdb) p debug_tree (cfun->gimple_df->ssa_names->m_vecdata[24])
<ssa_name 0x7fffea38edc8
type <pointer_type 0x7fffea5f3a80
type <record_type 0x7fffea5e9348 _Sp_counted_ptr_inplace addressable
tree_2 needs-constructing type_1 type_4 type_5 type_6 BLK
size <integer_cst 0x7fffea5a2c18 constant 320>
unit-size <integer_cst 0x7fffea5f2390 constant 40>
user align:64 warn_if_not_align:0 symtab:0 alias-set -1
canonical-type 0x7fffea5e9348 fields <function_decl 0x7fffea61ae00 __ct >
context <namespace_decl 0x7fffea80f098 std>
full-name "class std::_Sp_counted_ptr_inplace<blob,
std::allocator<blob>, 0>"
needs-constructor needs-destructor X(constX&) this=(X&) n_parents=1
use_template=1 interface-unknown
pointer_to_this <pointer_type 0x7fffea5f3a80> chain <type_decl
0x7fffea5e2c78 _Sp_counted_ptr_inplace>>
sizes-gimplified public unsigned type_6 DI
size <integer_cst 0x7fffea7f5e28 constant 64>
unit-size <integer_cst 0x7fffea7f5e40 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set 16 canonical-type
0x7fffea5f3a80>
visited
def_stmt _24 = malloc (40);
version:24
ptr-info 0x7fffea39a138>
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Subject: [Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Wed, 13 Feb 2019 11:14:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P2
Summary|[8/9 Regression] memory |[7/8/9 Regression] memory
|leak with shared_ptr and |leak with shared_ptr and
|enable_shared_from_this |enable_shared_from_this
>From gcc-bugs-return-633562-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:20:13 2019
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Subject: [Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #21 from Richard Biener <rguenth at gcc dot gnu.org> ---
Thanks for the analysis (where I agree with the P2), I'll have a look.
>From gcc-bugs-return-633563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:25:16 2019
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Wed, 13 Feb 2019 11:25:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Feb 13 11:24:28 2019
New Revision: 268840
URL: https://gcc.gnu.org/viewcvs?rev=268840&root=gcc&view=rev
Log:
Bump LTO_minor_version on GCC-8 branch (PR lto/89260).
2019-02-13 Martin Liska <mliska@suse.cz>
PR lto/89260
* lto-streamer.h (LTO_minor_version): Bump version due
to r268698.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/lto-streamer.h
>From gcc-bugs-return-633564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:25:57 2019
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Subject: [Bug c++/89331] New: internal compiler error: in build_simple_base_path, at cp/class.c:589
Date: Wed, 13 Feb 2019 11:25:00 -0000
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Bug ID: 89331
Summary: internal compiler error: in build_simple_base_path, at
cp/class.c:589
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Priority: P3
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#include <cstddef>
class A {
public:
char a;
};
class B : public A {
public:
static constexpr size_t b = offsetof(B, a);
};
$ c++ -Wall -c overl.cpp
In file included from /usr/include/c++/8/cstddef:50,
from overl.cpp:1:
overl.cpp:10:41: internal compiler error: in build_simple_base_path, at
cp/class.c:589
static constexpr size_t b = offsetof(B, a);
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
>From gcc-bugs-return-633565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:27:54 2019
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on affected GCC-8 branch.
>From gcc-bugs-return-633566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:32:10 2019
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Subject: [Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Wed, 13 Feb 2019 11:32:00 -0000
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- gcc/tree-ssa-structalias.c.jj 2019-01-01 12:37:18.738949011 +0100
+++ gcc/tree-ssa-structalias.c 2019-02-13 12:28:54.592256591 +0100
@@ -6412,7 +6412,7 @@ set_uids_in_ptset (bitmap into, bitmap f
&& bitmap_bit_p (escaped_vi->solution, i)))
{
pt->vars_contains_escaped = true;
- pt->vars_contains_escaped_heap = vi->is_heap_var;
+ pt->vars_contains_escaped_heap |= vi->is_heap_var;
}
if (vi->is_restrict_var)
fixes this for me (though, no idea what is that other variable in the points-to
set of _16).
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Subject: [Bug rtl-optimization/89295] [9 regression] compilation of gcc.dg-struct-layout-1/t001_x.c takes 30 times as long after r268404
Date: Wed, 13 Feb 2019 11:37:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amodra at gmail dot com
--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
Did the pr89225 fix make a difference here?
>From gcc-bugs-return-633568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 11:54:55 2019
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From: "prathamesh3492 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89332] New: Missed detection of dead stores to array in a loop
Date: Wed, 13 Feb 2019 11:54:00 -0000
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Bug ID: 89332
Summary: Missed detection of dead stores to array in a loop
Product: gcc
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Hi,
For the following test-case:
#define ARR_MAX 6
__attribute__((const)) int f(int);
int foo()
{
int arr[ARR_MAX];
for (int i = 0; i < ARR_MAX; i++)
arr[i] = f(i);
return arr[0];
}
With -O3, gcc generates call to f(i) and store to arr[i] on every iteration,
while clang detects the stores to arr are dead (except for arr[0]), removes the
loop and emits a tail-call to f(0).
aarch64-linux-gnu-gcc -O3:
foo:
.LFB0:
.cfi_startproc
stp x29, x30, [sp, -64]!
.cfi_def_cfa_offset 64
.cfi_offset 29, -64
.cfi_offset 30, -56
mov x29, sp
stp x19, x20, [sp, 16]
.cfi_offset 19, -48
.cfi_offset 20, -40
add x20, sp, 40
mov w19, 0
.p2align 3,,7
.L2:
mov w0, w19
bl f
str w0, [x20], 4
add w19, w19, 1
cmp w19, 6
bne .L2
ldr w0, [sp, 40]
ldp x19, x20, [sp, 16]
ldp x29, x30, [sp], 64
.cfi_restore 30
.cfi_restore 29
.cfi_restore 19
.cfi_restore 20
.cfi_def_cfa_offset 0
ret
clang -O3 --target=aarch64-linux-gnu:
foo: // @foo
// %bb.0:
mov w0, wzr
b f
It seems, clang takes advantage of loop unrolling for the above-case,
while gcc doesn't seem to. After increasing ARR_MAX from 6 to 512, clang
generates same/similar code as gcc.
I doubt tho if such code is written in practice or can result due to
abstraction lowering ? It was just a contrived test-case I made up.
Thanks,
Prathamesh
>From gcc-bugs-return-633569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 12:07:18 2019
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Subject: [Bug go/89193] "make distclean" leaves stuff in gotools/
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Thank you!
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Subject: [Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Assignee|rguenth at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45692
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45692&action=edit
gcc9-pr89303.patch
Full untested fix.
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Subject: [Bug middle-end/89281] [9 Regression] gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int'
Date: Wed, 13 Feb 2019 12:12:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 13 12:12:09 2019
New Revision: 268841
URL: https://gcc.gnu.org/viewcvs?rev=268841&root=gcc&view=rev
Log:
PR middle-end/89281
* optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
INTVAL (size), compare it to GET_MODE_MASK instead of
1 << GET_MODE_BITSIZE.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optabs.c
>From gcc-bugs-return-633572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 12:14:22 2019
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Subject: [Bug fortran/78983] [7/8/9 Regression] ICE with CAF-DT with allocatable member
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I see no ICE in testing the code from Comment 3 using fortran 7.3.0,
> 8.2.0, and 9.0.1.
Confirmed.
> I believe this can be closed.
Closing.
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Subject: [Bug fortran/83700] [Meta-bug] Fortran Coarray issues
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Bug 83700 depends on bug 78983, which changed state.
Bug 78983 Summary: [7/8/9 Regression] ICE with CAF-DT with allocatable member
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78983
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----------------------------------------------------------------------------
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>From gcc-bugs-return-633574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 12:41:52 2019
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Subject: [Bug target/89222] [7/8/9 regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
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--- Comment #8 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Wilco from comment #7)
> Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00780.html
Updated patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00947.html
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89291] internal compiler error: in gfc_trans_use_stmts
Date: Wed, 13 Feb 2019 12:52:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Installed gcc-5.5.0 and built the identical WRF version.
>
> No ICE encountered with 5.5.0.
Then if you get an ICE with 7.4, it a regression. Did you try 8.2 or trunk.
> Contacted NCAR, the providers of the source code.
Did you give them the URL to this PR?
It would be nice if they can attach a reproducer.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89331] [8/9 Regression] internal compiler error: in build_simple_base_path, at cp/class.c:589
Date: Wed, 13 Feb 2019 12:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|internal compiler error: in |[8/9 Regression] internal
|build_simple_base_path, at |compiler error: in
|cp/class.c:589 |build_simple_base_path, at
| |cp/class.c:589
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This used to be rejected (on the trunk until r260782, where it started ICEing,
on 8.x branch without giving any errors first, on the trunk as error recovery
ICE with
pr89331.C:2:71: error: cannot convert from ‘B’ to base class ‘A’ because ‘B’ is
incomplete
2 | struct B : public A { static constexpr int b = __builtin_offsetof (B, a);
};
| ^
pr89331.C:2:71: internal compiler error: in build_class_member_access_expr, at
cp/typeck.c:2480
0xb108bc build_class_member_access_expr(cp_expr, tree_node*, tree_node*, bool,
int)
../../gcc/cp/typeck.c:2480
0xb128cc finish_class_member_access_expr(cp_expr, tree_node*, bool, int)
../../gcc/cp/typeck.c:3001
Simplified testcase:
struct A { char a; };
struct B : public A { static constexpr int b = __builtin_offsetof (B, a); };
clang rejects this too, not really sure if it is valid or not.
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
Date: Wed, 13 Feb 2019 13:03:00 -0000
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--- Comment #7 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45693
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45693&action=edit
Update to option and Extension documentation
Documentation changes in their own difference file so that they can be checked
independently of the patch.
Patch will be update to incorporate the changes.
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From: "matmal01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Wed, 13 Feb 2019 13:03:00 -0000
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--- Comment #3 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
(In reply to ktkachov from comment #2)
> The sub<mode>3_compare1_imm pattern was introduced for GCC 9. It's probably
> something going wrong with the constraints. Matthew, could you take a look
> please?
On first blush it looks like the define_peephole2 generating this instruction
allows the stack pointer while the 'r' constraint in the pattern doesn't accept
it.
A quick check of only allowing GENERAL_REGS registers in the peephole indeed
stops the generation of this instruction and hence avoids the bug.
I haven't yet checked whether the pattern should allow the stack pointer or
not.
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Subject: [Bug fortran/88649] runtime error: load of value 137971008, which is not a valid value for type 'gfc_intrinsic_op'
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Feb 13 13:04:56 2019
New Revision: 268842
URL: https://gcc.gnu.org/viewcvs?rev=268842&root=gcc&view=rev
Log:
Fix -fdec simplification (PR fortran/88649).
2019-02-13 Martin Liska <mliska@suse.cz>
PR fortran/88649
* resolve.c (resolve_operator): Initialize 't' right
after function entry. Skip switch (e->value.op.op)
for -fdec operands that become function calls.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #8 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45694
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Patch to support default widths for f, g and i
Patch updated to incorporate documentation changes.
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #9 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45695
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Change log for gcc/fortran for patch
Updated to include changes in documentation
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #10 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45696
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Change Log for gcc/testsuite for patch
Replace -fdec-format-defaults with PR fortran/89100.
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Subject: [Bug sanitizer/89323] Asan memory leak detection on x86 platform
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--- Comment #4 from Ganesh Babu <ganeshemb at gmail dot com> ---
(In reply to Martin Liška from comment #2)
> I can confirm that LSAN does not work for -m32 on current trunk. It was
> enabled in:
>
> commit 1e39eaad45fc92b49e189badf0a5a675fbfb4ad0
> Author: Francis Ricci <francisjricci@gmail.com>
> Date: Tue Mar 28 21:56:44 2017 +0000
>
> Enable i386 builds for darwin lsan
>
> Summary:
> Now that __thread is no longer used for lsan on darwin, i386 builds
> can be enabled.
>
> Reviewers: kcc, kubamracek
>
> Subscribers: danalbert, srhines, mgorny, llvm-commits
>
> Differential Revision: https://reviews.llvm.org/D29995
>
> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@298946
> 91177308-0d34-0410-b5e6-96231b3b80d8
Hi,
<I can confirm that LSAN does not work for -m32 on current trunk.
can this issue be addressed in latest versions ?
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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--- Comment #11 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45697
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Change Log for libgfortran for patch
Add PR fortran/89100 to log.
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Subject: [Bug sanitizer/89323] Asan memory leak detection on x86 platform
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--- Comment #5 from Ganesh Babu <ganeshemb at gmail dot com> ---
(In reply to Martin Liška from comment #3)
> > works for current clang:
> >
> > clang-6.0 -g -fsanitize=address -fno-omit-frame-pointer -m32 asantest.c &&
> > ./a.out
> >
> > AddressSanitizer:DEADLYSIGNAL
> > =================================================================
> > ==6318==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000 (pc
> > 0xf74f2a66 bp 0xfff26cb8 sp 0xfff26854 T0)
> >
> >
>
> No, you forgot to provide ./a.out argument. That's why you see a SEGV.
> Please try latest clang release (7) and test it. If it's failing, please
> report upstream bug https://github.com/google/sanitizers/issues.
i have raised a request at https://github.com/google/sanitizers/issues/1049
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Subject: [Bug fortran/88649] runtime error: load of value 137971008, which is not a valid value for type 'gfc_intrinsic_op'
Date: Wed, 13 Feb 2019 13:15:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
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Bug 63426 depends on bug 88649, which changed state.
Bug 88649 Summary: runtime error: load of value 137971008, which is not a valid value for type 'gfc_intrinsic_op'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88649
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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Subject: [Bug bootstrap/84554] make check: FAIL: tversion: ERROR! The versions of gmp.h (5.0.5) and libgmp (4.3.1) do not match.
Date: Wed, 13 Feb 2019 13:18:00 -0000
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Bennet Fauber <bennet at umich dot edu> changed:
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----------------------------------------------------------------------------
CC| |bennet at umich dot edu
--- Comment #8 from Bennet Fauber <bennet at umich dot edu> ---
I believe the problem related below is related to this issue.
I am building GCC 8.2.0 on CentOS 7.5 which comes with GCC 4.8.5 and GMP 6.0.0.
I used download_prerequisites to download GMP, et al.
When I run make check from the GCC build directory, it issues the FAIL message
for mismatched library and header version information for GMP.
When GCC runs make check, it uses this command to compile the test.
$ /tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/xgcc
-B/tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/
-B/tmp/local/x86_64-pc-linux-gnu/bin/ -B/tmp/local/x86_64-pc-linux-gnu/bin/
-B/tmp/local/x86_64-pc-linux-gnu/lib/ -isystem
/tmp/local/x86_64-pc-linux-gnu/include -isystem
/tmp/local/x86_64-pc-linux-gnu/sys-include -DNO_ASM -g -O2 -static-libstdc++
-static-libgcc -o tversion tversion.o -L../src/.libs ./.libs/libfrtests.a -lm
../src/.libs/libmpfr.a -lgmp
which results in this binary
$ ldd tversion
linux-vdso.so.1 => (0x00007fffd9d67000)
libm.so.6 => /lib64/libm.so.6 (0x00002afc45e2a000)
libgmp.so.10 => /lib64/libgmp.so.10 (0x00002afc4612c000)
libc.so.6 => /lib64/libc.so.6 (0x00002afc463a4000)
/lib64/ld-linux-x86-64.so.2 (0x00002afc45c06000)
and that most definitely will fail the test because of the reference to
/lib64/libgmp.so.10.
If I change to the mpfr/tests directory and remove tversion, then run make from
there, mpfr's Makefile compiles it this way
$ make tversion
/bin/sh ../libtool --tag=CC --mode=link
/tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/xgcc
-B/tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/
-B/tmp/local/x86_64-pc-linux-gnu/bin/ -B/tmp/local/x86_64-pc-linux-gnu/bin/
-B/tmp/local/x86_64-pc-linux-gnu/lib/ -isystem
/tmp/local/x86_64-pc-linux-gnu/include -isystem
/tmp/local/x86_64-pc-linux-gnu/sys-include -g -O2 -no-install
-L../src/.libs -static-libstdc++ -static-libgcc
-L/tmp/bennet/build/gcc-8.2.0-build/gmp/.libs -o tversion tversion.o
libfrtests.la -lm ../src/libmpfr.la -lgmp
libtool: link: /tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/xgcc
-B/tmp/bennet/build/gcc-8.2.0-build/./prev-gcc/
-B/tmp/local/x86_64-pc-linux-gnu/bin/ -B/tmp/local/x86_64-pc-linux-gnu/bin/
-B/tmp/local/x86_64-pc-linux-gnu/lib/ -isystem
/tmp/local/x86_64-pc-linux-gnu/include -isystem
/tmp/local/x86_64-pc-linux-gnu/sys-include -g -O2 -static-libstdc++
-static-libgcc -o tversion tversion.o -L../src/.libs
-L/tmp/bennet/build/gcc-8.2.0-build/gmp/.libs ./.libs/libfrtests.a -lm
../src/.libs/libmpfr.a /tmp/bennet/build/gcc-8.2.0-build/gmp/.libs/libgmp.a
which results in this binary
$ ldd tversion
linux-vdso.so.1 => (0x00007ffc899c0000)
libm.so.6 => /lib64/libm.so.6 (0x00002b39a664f000)
libc.so.6 => /lib64/libc.so.6 (0x00002b39a6951000)
/lib64/ld-linux-x86-64.so.2 (0x00002b39a642b000)
and the test passes,
$ ./tversion
[tversion] MPFR 3.1.4
[tversion] Compiler: GCC 8.2.0
[tversion] GMP: header 6.1.0, library 6.1.0
[tversion] TLS = yes, decimal = no, GMP internals = no
[tversion] intmax_t = yes, printf = yes
[tversion] gmp_printf: hhd = yes, lld = yes, jd = yes, td = yes, Ld = yes
[tversion] MPFR tuning parameters from default
I think this suggests that the problem is in the way the GCC make test is
building the tests.
I am using
$ ../gcc-8.2.0/configure --enable-languages=c,c++,fortran \
--prefix=/tmp/local --disable-multilibq
Platform is x86_64.
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Subject: [Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Wed, 13 Feb 2019 13:32:00 -0000
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 13 13:32:00 2019
New Revision: 268843
URL: https://gcc.gnu.org/viewcvs?rev=268843&root=gcc&view=rev
Log:
2019-02-13 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89303
* tree-ssa-structalias.c (set_uids_in_ptset): Or in vi->is_heap_var
into pt->vars_contains_escaped_heap instead of setting
pt->vars_contains_escaped_heap to it.
2019-02-13 Jonathan Wakely <jwakely@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR middle-end/89303
* g++.dg/torture/pr89303.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr89303.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-structalias.c
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Subject: [Bug c++/89331] [8/9 Regression] internal compiler error: in build_simple_base_path, at cp/class.c:589
Date: Wed, 13 Feb 2019 13:33:00 -0000
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--- Comment #2 from Stas Sergeev <stsp at users dot sourceforge.net> ---
(In reply to Jakub Jelinek from comment #1)
> Simplified testcase:
> struct A { char a; };
> struct B : public A { static constexpr int b = __builtin_offsetof (B, a); };
>
> clang rejects this too, not really sure if it is valid or not.
Thanks for taking a look!
A slight off-topic: any idea why even this rejects:
struct A {
char a;
static constexpr int b = __builtin_offsetof (A, a);
};
and is there any work-around when I want to
pass offsetof value into a template non-type,
which also rejects:
struct A {
char a;
B<__builtin_offsetof(A, a)> b;
};
Does the standard explicitly forbids that, of just gcc?
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/89333] New: [9 Regression] FAIL: gnat.dg/vect*.adb on darwin
Date: Wed, 13 Feb 2019 13:39:00 -0000
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Bug ID: 89333
Summary: [9 Regression] FAIL: gnat.dg/vect*.adb on darwin
Product: gcc
Version: unknown
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Priority: P3
Component: ada
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CC: ebotcazou at gcc dot gnu.org, iains at gcc dot gnu.org
Target Milestone: ---
Between revisions and the following ADA tests have started to fail:
FAIL: gnat.dg/vect1.adb 3 blank line(s) in output
FAIL: gnat.dg/vect1.adb (test for excess errors)
FAIL: gnat.dg/vect2.adb 3 blank line(s) in output
FAIL: gnat.dg/vect2.adb (test for excess errors)
FAIL: gnat.dg/vect3.adb 3 blank line(s) in output
FAIL: gnat.dg/vect3.adb (test for excess errors)
FAIL: gnat.dg/vect4.adb 3 blank line(s) in output
FAIL: gnat.dg/vect4.adb (test for excess errors)
FAIL: gnat.dg/vect5.adb 3 blank line(s) in output
FAIL: gnat.dg/vect5.adb (test for excess errors)
FAIL: gnat.dg/vect6.adb 3 blank line(s) in output
FAIL: gnat.dg/vect6.adb (test for excess errors)
The failure for vect1.adb is
spawn -ignore SIGHUP /opt/gcc/build_w/gcc/gnatmake
--GCC=/opt/gcc/build_w/gcc/xgcc --GNATBIND=/opt/gcc/build_w/gcc/gnatbind
--GNATLINK=/opt/gcc/build_w/gcc/gnatlink -cargs -B/opt/gcc/build_w/gcc -largs
--GCC=/opt/gcc/build_w/gcc/xgcc -B/opt/gcc/build_w/gcc -m32 -margs
--RTS=/opt/gcc/build_w/x86_64-apple-darwin18.2.0/i386/libada -q -f
/opt/gcc/work/gcc/testsuite/gnat.dg/vect1.adb -m32 -fno-diagnostics-show-caret
-fno-diagnostics-show-line-numbers -fdiagnostics-color=never -O3 -msse2
-fno-vect-cost-model -fdump-tree-vect-details -c -u -S -o vect1.s
+===========================GNAT BUG DETECTED==============================+
| 9.0.1 20190212 (experimental) [trunk revision 268809p12]
(x86_64-apple-darwin18.2.0) GCC error:|
| tree check: expected class 'constant', have 'binary' (mult_expr) in |
| valid_constant_size_p, at tree.c:7524 |
| Error detected at vect1.ads:24:41 |
| Please submit a bug report; see https://gcc.gnu.org/bugs/ . |
| Use a subject line meaningful to you and us to track the bug. |
| Include the entire contents of this bug box in the report. |
| Include the exact command that you entered. |
| Also include sources listed below. |
+==========================================================================+
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
Date: Wed, 13 Feb 2019 13:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89286
--- Comment #9 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45698
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45698&action=edit
GNU extension to intrinsic SIGN
Remove declaration of gfc_check_sign from intrinsic.h has it has been deleted.
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Subject: [Bug fortran/89286] Intrinsic sign and GNU Extension
Date: Wed, 13 Feb 2019 13:41:00 -0000
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MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45658|0 |1
is obsolete| |
--- Comment #10 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45699
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45699&action=edit
Change log for gcc/fortran for patch
Update log to include change to intrinsic.h.
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Subject: [Bug inline-asm/89334] New: unsupported size for integer register
Date: Wed, 13 Feb 2019 13:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89334
Bug ID: 89334
Summary: unsupported size for integer register
Product: gcc
Version: 8.2.0
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Created attachment 45700
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45700&action=edit
test case
The following seemingly valid test-case can
be compiled with clang, but fails with gcc with -O2:
$ gcc -Wall -m32 -O2 -S -o foo.s foo.c
foo.c: In function ‘do_work’:
foo.c:60:1: error: unsupported size for integer register
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89333] [9 Regression] FAIL: gnat.dg/vect*.adb on darwin
Date: Wed, 13 Feb 2019 13:42:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Between revisions and the following ADA tests have started to fail:
I was supposed to post: Between revisions r268704 and r268809.
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From: "ilg at livius dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug driver/89249] mingw, paths with spaces, LTO -> collect2.exe: fatal error: CreateProcess: No such file or directory
Date: Wed, 13 Feb 2019 13:47:00 -0000
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--- Comment #4 from Liviu Ionescu <ilg at livius dot net> ---
I added a printf() in pex_win32_exec_child() to see why the lto invocation
fails, and here is the result:
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../libexec/gcc/arm-none-eabi/8.2.1/collect2.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1 1.4-20190213-0923/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/nm.exe') <<<<<
>>>>> pex_win32_exec_child (executable='c:/users/ilg/desktop/8.2.1\ \ \ \ \ 1.4-20190213-0923/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe') <<<<<
collect2.exe: fatal error: CreateProcess: No such file or directory
compilation terminated.
C:\Users\ilg\tmp\lto>
it looks like the win32 api is not happy with the escaped spaces in the
lto-wrapper path.
I conditionally removed the white space conversion in gcc.c (around line 7741)
and the problem was fixed:
#if defined (__MINGW32__)
// Win32 fails to CreateProcess if spaces are escaped.
lto_wrapper_spec = lto_wrapper_file;
#else
lto_wrapper_file = convert_white_space (lto_wrapper_file);
#endif
I did the same for the second reference to convert_white_space(), while
processing the linker_plugin_file_spec, but I do not have a clear reason why
this is needed, since aparently the name of the temporary files used for the
specs file is generate by win32 in the 8.3 format, and has no spaces.
I tried to remove the conversion entirely, but then ld fails to load the
plugin:
/home/ilg/Desktop/8.2.1
1.4-20190213-1020/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld:
/home/ilg/Desktop/8.2.1: error loading plugin: /home/ilg/Desktop/8.2.1: cannot
open shared object file: No such file or directory
collect2: error: ld returned 1 exit status
ilg@ilg-ud18lts64-gme:~/tmp/lto$
I'll apply a patch to build my distribution, but I think a more elaborate
solution is needed.
Although not related to this issue, another curious thing was the sequence of 6
calls to nm shown by the trace. Are they expected?
>From gcc-bugs-return-633597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 13:52:35 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Wed, 13 Feb 2019 13:52:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-13
Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot gnu.org
Ever confirmed|0 |1
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From: "Hi-Angel at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89326] [RFE] Highlight `required from here` in compile-error output
Date: Wed, 13 Feb 2019 13:52:00 -0000
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--- Comment #2 from Konstantin Kharlamov <Hi-Angel at yandex dot ru> ---
Btw, I just occasionally noted: godbolt site adds their own highlight to GCC
output, in particular they highlight the whole line with "required from here"
with blue. Maybe something can be borrowed from them :)
https://godbolt.org/z/dK0CzG
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From: "ilg at livius dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug driver/89249] mingw, paths with spaces, LTO -> collect2.exe: fatal error: CreateProcess: No such file or directory
Date: Wed, 13 Feb 2019 14:04:00 -0000
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--- Comment #5 from Liviu Ionescu <ilg at livius dot net> ---
The patch is wrong, it should read:
#if defined (__MINGW32__)
// Win32 fails to CreateProcess if spaces are escaped.
#else
lto_wrapper_file = convert_white_space (lto_wrapper_file);
#endif
>From gcc-bugs-return-633600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:05:21 2019
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Subject: [Bug target/88847] gcc.target/aarch64/sve/struct_move_1.c ICE with -fstack-protector-strong
Date: Wed, 13 Feb 2019 14:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88847
--- Comment #4 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Wed Feb 13 14:04:41 2019
New Revision: 268845
URL: https://gcc.gnu.org/viewcvs?rev=268845&root=gcc&view=rev
Log:
AArch64: Allow any offset for SVE addressing modes before reload.
On AArch64 aarch64_classify_address has a case for when it's non-strict
that will allow it to accept any byte offset from a reg when validating
an address in a given addressing mode.
This because reload would later make the address valid. SVE however requires
the address always be valid, but currently allows any address when a MEM +
offset is used. This causes an ICE as nothing later forces the address to be
legitimate.
The patch forces aarch64_emit_sve_pred_move via expand_insn to ensure that
the addressing mode is valid for any loads/stores it creates, which follows
the SVE way of handling address classifications.
gcc/ChangeLog:
PR target/88847
* config/aarch64/aarch64-sve.md (*pred_mov<mode>, pred_mov<mode>):
Expose as @aarch64_pred_mov.
* config/aarch64/aarch64.c (aarch64_classify_address):
Use expand_insn which legitimizes operands.
gcc/testsuite/ChangeLog:
PR target/88847
* gcc.target/aarch64/sve/pr88847.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/aarch64/sve/pr88847.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64-sve.md
trunk/gcc/config/aarch64/aarch64.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89284] gcc -fsanitize=undefined inhibits -Wuninitialized
Date: Wed, 13 Feb 2019 14:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89284
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45701
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45701&action=edit
gcc9-pr89284.patch
We could swap the early uninit warning pass with ubsan pass, the former
shouldn't change the IL (except for TREE_NO_WARNING/gimple_no_warning), while
the ubsan pass can make it harder to diagnose something e.g. because of the
enum/bool loads checking.
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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89335] New: [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
Date: Wed, 13 Feb 2019 14:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89335
Bug ID: 89335
Summary: [9 Regression] ICE with LTO -Wsuggest-final-methods:
ICE during IPA pass devirt in types_same_for_odr, at
ipa-devirt.c:391
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
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Created attachment 45702
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45702&action=edit
9 Line test case: g++ -O2 -flto -Wsuggest-final-methods input.ii
$ g++ -O2 -flto -Wsuggest-final-methods input.ii
during IPA pass: devirt
lto1: internal compiler error: in types_same_for_odr, at ipa-devirt.c:391
0x638062 types_same_for_odr(tree_node const*, tree_node const*)
../../gcc/ipa-devirt.c:391
0xa7c1a3 possible_polymorphic_call_targets(tree_node*, long,
ipa_polymorphic_call_context, bool*, void**, bool)
../../gcc/ipa-devirt.c:3390
0xa7d315 possible_polymorphic_call_targets(cgraph_edge*, bool*, void**, bool)
../../gcc/ipa-utils.h:118
0xa7d315 ipa_devirt
../../gcc/ipa-devirt.c:3781
0xa7d315 execute
../../gcc/ipa-devirt.c:4094
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: g++ returned 1 exit status
compilation terminated.
/data/local/gdb/gdb-inst/bin/ld: error: lto-wrapper failed
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Subject: [Bug middle-end/86554] [7 Regression] Incorrect code generation with signed/unsigned comparison
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86554
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 13 14:22:06 2019
New Revision: 268846
URL: https://gcc.gnu.org/viewcvs?rev=268846&root=gcc&view=rev
Log:
2019-02-13 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/86554
* tree-ssa-sccvn.c (visit_nary_op): When value-numbering to
expressions with different overflow behavior make sure there's an
available expression on the path.
* gcc.dg/torture/pr86554-1.c: New testcase.
* gcc.dg/torture/pr86554-2.c: Likewise.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr86554-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr86554-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
Date: Wed, 13 Feb 2019 14:26:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-13
Known to work| |8.2.0
Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r263697.
>From gcc-bugs-return-633605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:26:05 2019
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Wed, 13 Feb 2019 14:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ak at gcc dot gnu.org,
| |ian at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |uros at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Guess this is similar to the TLS ICE with -mforce-indirect-call. In this case,
I think we need to figure out into which register could we load the address.
Unfortunately, %rax or %eax isn't available for that, at least not always, e.g.
for -m64 it can hold the saved static chain, the existence of
__morestack_large_model shows that, but -m32 doesn't have anything like that.
So, in theory for -fsplit-stack -mforce-indirect-call -m64 we could call
__morestack_large_model even in non-large model compilations, just load the
address of that function differently. For -m32, I'm out of ideas.
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |7.5
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
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--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #7)
> Guess this is similar to the TLS ICE with -mforce-indirect-call. In this
> case, I think we need to figure out into which register could we load the
> address. Unfortunately, %rax or %eax isn't available for that, at least not
> always, e.g. for -m64 it can hold the saved static chain, the existence of
> __morestack_large_model shows that, but -m32 doesn't have anything like that.
> So, in theory for -fsplit-stack -mforce-indirect-call -m64 we could call
> __morestack_large_model even in non-large model compilations, just load the
> address of that function differently. For -m32, I'm out of ideas.
We may use a temporary regno as returned from
split_stack_prologue_scratch_regno, perhaps in some generalized form here.
>From gcc-bugs-return-633608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:33:53 2019
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Subject: [Bug c++/89036] [8/9 Regression] ICE if destructor has a requires
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
David, can you please ping your patch?
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01529.html
>From gcc-bugs-return-633609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:36:26 2019
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
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--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #8)
> (In reply to Jakub Jelinek from comment #7)
> > Guess this is similar to the TLS ICE with -mforce-indirect-call. In this
> > case, I think we need to figure out into which register could we load the
> > address. Unfortunately, %rax or %eax isn't available for that, at least not
> > always, e.g. for -m64 it can hold the saved static chain, the existence of
> > __morestack_large_model shows that, but -m32 doesn't have anything like that.
> > So, in theory for -fsplit-stack -mforce-indirect-call -m64 we could call
> > __morestack_large_model even in non-large model compilations, just load the
> > address of that function differently. For -m32, I'm out of ideas.
>
> We may use a temporary regno as returned from
> split_stack_prologue_scratch_regno, perhaps in some generalized form here.
Bah, get_scratch_register_on_entry, not split_stack_prologue_scratch_regno.
>From gcc-bugs-return-633610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:40:28 2019
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Subject: [Bug target/89290] [8 Regression] ICE in change_address_1, at emit-rtl.c:2286
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|change_address_1, at |change_address_1, at
|emit-rtl.c:2286 |emit-rtl.c:2286
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-633612-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:41:29 2019
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Subject: [Bug middle-end/89281] [9 Regression] gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int'
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-633611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:41:05 2019
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Subject: [Bug middle-end/89303] [7/8 Regression] memory leak with shared_ptr and enable_shared_from_this
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] memory |[7/8 Regression] memory
|leak with shared_ptr and |leak with shared_ptr and
|enable_shared_from_this |enable_shared_from_this
--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-633613-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:43:16 2019
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Subject: [Bug target/88847] gcc.target/aarch64/sve/struct_move_1.c ICE with -fstack-protector-strong
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
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--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Resolved in r268845.s
>From gcc-bugs-return-633614-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:44:14 2019
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Subject: [Bug c++/89326] [RFE] Highlight `required from here` in compile-error output
Date: Wed, 13 Feb 2019 14:44:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it highlights all lines where the location is the main source file, so
they stand out from anything with a location in a header.
>From gcc-bugs-return-633615-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:51:39 2019
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mjambor at suse dot cz
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
We may have more instances of this - I think I got rid of most of that code but
once upon of time it was common in GCC to walk removed instructions and edges
knowing they are in freelist.
This code is originally Martin's. I will try to take a look how complex the
interaction beween creation and removal is these days. One way is to teach
inliner cache to maintain the list of new edges transparently without having to
have extra vector.
>From gcc-bugs-return-633616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 14:58:03 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Wed, 13 Feb 2019 14:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89307
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Created attachment 45703
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45703&action=edit
patch for tls counters (incomplete - no runtime bits)
Also I think google's code to reduce cacheline conflicts is
https://gcc.gnu.org/ml/gcc-patches/2012-05/msg00959.html
>From gcc-bugs-return-633617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:26:00 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 15:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89334
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
User error. For 8-bit register operands on x86 one needs to use "q" constraint
rather than "r", "r" is for any general registers while "q" is the same for
-m64, but only al/bl/cl/dl for -m32, because there is no sil/dil/bpl for -m32.
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Subject: [Bug c++/87113] ICE in adjust_temp_type at cp/constexpr.c:1205
Date: Wed, 13 Feb 2019 15:43:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
It was fixed for 8.3+ too, but not in 7.
>From gcc-bugs-return-633619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:44:06 2019
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Subject: [Bug c++/87113] ICE in adjust_temp_type at cp/constexpr.c:1205
Date: Wed, 13 Feb 2019 15:44:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(GCC 8.3 should be released Feb 22.)
>From gcc-bugs-return-633620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:45:59 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Wed, 13 Feb 2019 15:45:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
CC| |rts at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess the backend needs to help combiner here, e.g. for octeon-exts-3.c
before the combiner change on
(insn 2 4 3 2 (set (reg/v:DI 196 [ i+-4 ])
(reg:DI 4 $4 [ i+-4 ])) "octeon-exts-3.c":34:1 312 {*movdi_64bit}
(expr_list:REG_DEAD (reg:DI 4 $4 [ i+-4 ])
(nil)))
(insn 6 3 7 2 (set (reg:SI 198)
(ashift:SI (subreg/s/u:SI (reg/v:DI 196 [ i+-4 ]) 4)
(const_int 4 [0x4]))) "octeon-exts-3.c":35:13 444 {*ashlsi3}
(expr_list:REG_DEAD (reg/v:DI 196 [ i+-4 ])
(nil)))
(insn 7 6 13 2 (set (reg:SI 197)
(ashiftrt:SI (reg:SI 198)
(const_int 24 [0x18]))) "octeon-exts-3.c":35:19 445 {*ashrsi3}
(expr_list:REG_DEAD (reg:SI 198)
(nil)))
(insn 13 7 14 2 (set (reg/i:DI 2 $2)
(sign_extend:DI (reg:SI 197))) "octeon-exts-3.c":36:1 236 {extendsidi2}
(expr_list:REG_DEAD (reg:SI 197)
(nil)))
there was:
Trying 2 -> 6:
Successfully matched this instruction:
(set (reg:SI 199 [ D.1424 ])
(ashift:SI (reg:SI 4 $4 [ i ])
(const_int 4 [0x4])))
Trying 6 -> 7:
Successfully matched this instruction:
(set (reg:SI 198 [ D.1424 ])
(sign_extract:SI (reg:SI 4 $4 [ i ])
(const_int 8 [0x8])
(const_int 20 [0x14])))
but after the combiner change the hard regs aren't propagated into the
instructions anymore, so we end up with:
Trying 2 -> 6:
Successfully matched this instruction:
(set (reg:SI 198)
(ashift:SI (subreg:SI (reg:DI 200) 4)
(const_int 4 [0x4])))
Trying 6 -> 7:
Failed to match this instruction:
(set (reg:SI 197)
(ashiftrt:SI (truncate:SI (ashift:DI (reg:DI 200)
(const_int 4 [0x4])))
(const_int 24 [0x18])))
So, I'd say adding define_insn_and_split which would handle the above pattern
from the failed match, i.e. ashiftrt with truncate of ashift and split it into
a sign_extract of the lowpart subreg, then it would succeed again.
>From gcc-bugs-return-633621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:49:25 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89036] [8/9 Regression] ICE if destructor has a requires
Date: Wed, 13 Feb 2019 15:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89036
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Wed Feb 13 15:48:37 2019
New Revision: 268847
URL: https://gcc.gnu.org/viewcvs?rev=268847&root=gcc&view=rev
Log:
C++ concepts: fix ICE with requires on dtors (PR c++/89036)
PR c++/89036 reports an ICE due to this assertion failing
1136 /* A class should never have more than one destructor. */
1137 gcc_assert (!current_fns || via_using || !DECL_DESTRUCTOR_P
(method));
on this template with a pair of dtors, with
mutually exclusive "requires" clauses:
template<typename T>
struct Y {
~Y() requires(true) = default;
~Y() requires(false) {}
};
Nathan introduced this assertion as part of:
ca9219bf18c68a001d62ecb981bc9176b0feaf12 (aka r251340):
2017-08-24 Nathan Sidwell <nathan@acm.org>
Conversion operators kept on single overload set
which, amongst other changes to add_method had this:
/* A class should never have more than one destructor. */
- if (current_fns && DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (method))
- return false;
+ gcc_assert (!current_fns || !DECL_DESTRUCTOR_P (method));
The following patch drops the assertion (I already had to generalize
the assertion in r268041 to fix PR c++/88699).
gcc/cp/ChangeLog:
PR c++/89036
* class.c (add_method): Drop destructor assertion.
gcc/testsuite/ChangeLog:
PR c++/89036
* g++.dg/concepts/pr89036.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/concepts/pr89036.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88699] [9 Regression] tree check fail: expected function_decl, have using_decl in add_method, at cp/class.c:1137
Date: Wed, 13 Feb 2019 15:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88699
--- Comment #10 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Wed Feb 13 15:48:37 2019
New Revision: 268847
URL: https://gcc.gnu.org/viewcvs?rev=268847&root=gcc&view=rev
Log:
C++ concepts: fix ICE with requires on dtors (PR c++/89036)
PR c++/89036 reports an ICE due to this assertion failing
1136 /* A class should never have more than one destructor. */
1137 gcc_assert (!current_fns || via_using || !DECL_DESTRUCTOR_P
(method));
on this template with a pair of dtors, with
mutually exclusive "requires" clauses:
template<typename T>
struct Y {
~Y() requires(true) = default;
~Y() requires(false) {}
};
Nathan introduced this assertion as part of:
ca9219bf18c68a001d62ecb981bc9176b0feaf12 (aka r251340):
2017-08-24 Nathan Sidwell <nathan@acm.org>
Conversion operators kept on single overload set
which, amongst other changes to add_method had this:
/* A class should never have more than one destructor. */
- if (current_fns && DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (method))
- return false;
+ gcc_assert (!current_fns || !DECL_DESTRUCTOR_P (method));
The following patch drops the assertion (I already had to generalize
the assertion in r268041 to fix PR c++/88699).
gcc/cp/ChangeLog:
PR c++/89036
* class.c (add_method): Drop destructor assertion.
gcc/testsuite/ChangeLog:
PR c++/89036
* g++.dg/concepts/pr89036.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/concepts/pr89036.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89336] New: internal compiler error when compiling a constexpr function
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89336
Bug ID: 89336
Summary: internal compiler error when compiling a constexpr
function
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marek at telnyx dot com
Target Milestone: ---
g++ version: 8.2.0
Trying to compile the following source causes internal compiler error:
-------
#include <array>
constexpr std::array<int, 256> prepare()
{
std::array<int, 256> r = {0};
for ( int i = 0; i < 6; ++i )
{
r[i + 'a'] = r[i + 'A'] = i + 10;
}
return r;
}
int main()
{
auto v = prepare();
return 0;
}
-------
g++ -std=c++17 xx.cpp
xx.cpp: In function ‘int main()’:
xx.cpp:16:20: internal compiler error: Segmentation fault
auto v = prepare();
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 15:51:00 -0000
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--- Comment #2 from Stas Sergeev <stsp at users dot sourceforge.net> ---
(In reply to Jakub Jelinek from comment #1)
> the same for -m64, but only al/bl/cl/dl for -m32, because there is no
> sil/dil/bpl for -m32.
But why does this matter?
I am perfectly fine with al/bl/cl/dl, never asked
to use sil/dil/bpl. What is the rationale? If "r"
is plain invalid for 8bit values, then shouldn't
the error be different and not to depend on an opt
level? Could you please explain a bit more what
exactly the error is and why it works with -O1?
Why invalid registers (sil/dil/bpl) even matter
at all?
>From gcc-bugs-return-633624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:51:24 2019
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Subject: [Bug c++/89036] [8 Regression] ICE if destructor has a requires
Date: Wed, 13 Feb 2019 15:51:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE if |[8 Regression] ICE if
|destructor has a requires |destructor has a requires
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Fixed on trunk by r268847.
>From gcc-bugs-return-633626-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 15:59:06 2019
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Subject: [Bug target/89316] ICE in gen_reg_rtx, at emit-rtl.c:1155
Date: Wed, 13 Feb 2019 15:59:00 -0000
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--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #6)
> (In reply to Eric Gallager from comment #5)
> > actually since all the bugs seem to be about different targets triggering
> > that assert in different ways, would it be possible to replace it with an
> > internal_error() that provides a bit more information as to how exactly the
> > compiler got there?
>
> That is why there is a backtrace. The assert is just asserting we can't
> create any new psedu registers as the register allocator has happened
> already. Basically the backend can't directly use
> copy_to_mode_reg/gen_reg_rtx after register allocation. How do you print
> where you can from when it is two layers deep? Also this is why there is a
> backtrace printed out to help out.
Unfortunately there's no backtrace on Darwin (where I test) due to bug 88745
(unless you manually attach a debugger)
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 16:01:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If you are using inline asm, you need to know what you are doing.
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Simple-Constraints.html#Simple-Constraints
‘r’
A register operand is allowed provided that it is in a general register.
while q is:
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Machine-Constraints.html#Machine-Constraints
‘q’
Any register accessible as rl. In 32-bit mode, a, b, c, and d; in 64-bit
mode, any integer register.
By using r constraint, you tell the compiler it is ok to allocate that value in
any gpr register, so for 32-bit mode eax, ebx, ecx, edx, esi, edi, ebp (or, in
theory esp, though that is fixed register).
That would be ok if the assembly pattern used e.g. %k1 instead of %1. But as
you want to use the %?l in there, you need to tell the compiler that it may
only use the selected registers, otherwise it is a lottery. It can compile
fine, if you are lucky and the compiler chooses the eax/ebx/ecx/edx registers,
or it can fail the way it failed for you.
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Wed, 13 Feb 2019 16:05:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |dominiq at lps dot ens.fr
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 89333 has been marked as a duplicate of this bug. ***
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Subject: [Bug ada/89333] [9 Regression] FAIL: gnat.dg/vect*.adb on darwin
Date: Wed, 13 Feb 2019 16:05:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I was supposed to post: Between revisions r268704 and r268809.
You're also more or less supposed to check whether this hasn't been reported
already. This has been reported already, and twice.
*** This bug has been marked as a duplicate of bug 89294 ***
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The current ICE started with r267253:
89336.C: In function ‘int main()’:
89336.C:16:20: internal compiler error: Segmentation fault
0x13ae0c0 crash_signal
../../gcc/toplev.c:326
0x89a0e1 initialized_type
../../gcc/cp/constexpr.c:2830
0x89a2eb init_subob_ctx
../../gcc/cp/constexpr.c:2864
0x89a8dc cxx_eval_bare_aggregate
../../gcc/cp/constexpr.c:2951
0x8a205e cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4692
0x89a94d cxx_eval_bare_aggregate
../../gcc/cp/constexpr.c:2956
0x8a205e cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4692
0x8a38ea cxx_eval_outermost_constant_expr
../../gcc/cp/constexpr.c:5077
0x8a454c maybe_constant_value(tree_node*, tree_node*, bool)
../../gcc/cp/constexpr.c:5309
0x8c2776 cp_fully_fold(tree_node*)
../../gcc/cp/cp-gimplify.c:2161
0xb73a19 split_nonconstant_init(tree_node*, tree_node*)
../../gcc/cp/typeck2.c:753
0xb7421d store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc/cp/typeck2.c:876
0x9041c4 check_initializer
../../gcc/cp/decl.c:6491
0x90766d cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/cp/decl.c:7167
0xa0faa8 cp_parser_init_declarator
../../gcc/cp/parser.c:20327
0xa02a14 cp_parser_simple_declaration
../../gcc/cp/parser.c:13414
0xa025a5 cp_parser_block_declaration
../../gcc/cp/parser.c:13239
0xa01a00 cp_parser_declaration_statement
../../gcc/cp/parser.c:12844
0x9fdb1a cp_parser_statement
../../gcc/cp/parser.c:11169
0x9fe815 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11531
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
but before that it ICEd also:
89336.C: In function ‘int main()’:
89336.C:16:20: internal compiler error: Segmentation fault
0x13ae0a2 crash_signal
../../gcc/toplev.c:326
0xb7348a split_nonconstant_init_1
../../gcc/cp/typeck2.c:641
0xb7350c split_nonconstant_init_1
../../gcc/cp/typeck2.c:652
0xb73a1b split_nonconstant_init(tree_node*, tree_node*)
../../gcc/cp/typeck2.c:755
0xb741ff store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc/cp/typeck2.c:876
0x9041a6 check_initializer
../../gcc/cp/decl.c:6491
0x90764f cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/cp/decl.c:7167
0xa0fa8a cp_parser_init_declarator
../../gcc/cp/parser.c:20327
0xa029f6 cp_parser_simple_declaration
../../gcc/cp/parser.c:13414
0xa02587 cp_parser_block_declaration
../../gcc/cp/parser.c:13239
0xa019e2 cp_parser_declaration_statement
../../gcc/cp/parser.c:12844
0x9fdafc cp_parser_statement
../../gcc/cp/parser.c:11169
0x9fe7f7 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11531
0x9fe6ed cp_parser_compound_statement
../../gcc/cp/parser.c:11485
0xa13879 cp_parser_function_body
../../gcc/cp/parser.c:22405
0xa13a3d cp_parser_ctor_initializer_opt_and_function_body
../../gcc/cp/parser.c:22442
0xa1d7ec cp_parser_function_definition_after_declarator
../../gcc/cp/parser.c:27495
0xa1d619 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/cp/parser.c:27411
0xa0f2a1 cp_parser_init_declarator
../../gcc/cp/parser.c:20097
0xa029f6 cp_parser_simple_declaration
../../gcc/cp/parser.c:13414
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-633632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:09:02 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
Date: Wed, 13 Feb 2019 16:09:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r[i + 'a'] = i + 10;
r[i + 'A'] = i + 10;
or
r[i + 'a'] = i + 10;
r[i + 'A'] = r[i + 'a'];
doesn't ICE.
>From gcc-bugs-return-633633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:12:48 2019
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From: "kelvin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Wed, 13 Feb 2019 16:12:00 -0000
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--- Comment #12 from kelvin at gcc dot gnu.org ---
After further digging, I have uncovered some additional clues:
after initial gimple expansion (i.e. the 005t.gimple trace file):
vec_extract (vi, 3) is represented by __builtin_vec_ext_v4si (vi, 3)
But vec_extract (vi, 10) is represented by __BIT_FIELD_REF <vi, 32, 64>
Apparently, the difference in handling of these two cases is that the selector
argument of the latter is known to be a constant greater than the number of
elements in the vector.
However, when the same code is expanded after in-lining the doextractbybuiltin
function of comment #4, the two expressions expand into
__builtin_vec_ext_v4si (vi, 3) and
__builtin_vec_ext_v4si (vi, 10) respectively.
This behavior is first manifest in the .047t.local-fnsummary2 trace file.
Later, when we "process" __builtin_vec_ext_v4si with a constant selector whose
value exceeds the vector length, we issue the erroneous error message. With
non-constant selector values for __builtin_vec_ext_v4si, we do not issue the
error message.
I think the place to fix this is in the processing of the
__builtin_vec_ext_v4si function (and all of its lookalikes). Rather than issue
the error message, we may have to emit slightly different implementations of
the code or maybe not even that. Maybe i can just remove the error message. I
need to study this a little more.
At the same time, I'm wondering if the "real problem" is in the
local-fnsummary2 pass. During in-lining, it could be argued that it should
have produced the same intermediate form as the original gimple expansion:
BIT_FIELD_REF instead of __builtin_vec_ext_v4si.
Does anyone have further suggestions before I begin implementing a "solution"?
Thanks.
>From gcc-bugs-return-633634-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:21:17 2019
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Subject: [Bug bootstrap/78251] config/gettext.m4 and config/iconv.m4 contaminate CPPFLAGS
Date: Wed, 13 Feb 2019 16:21:00 -0000
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--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> r265896 might have affected this
Update: apparently not; I still had to deactivate libunwind-headers again on my
latest build of gcc
>From gcc-bugs-return-633635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:23:01 2019
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Subject: [Bug target/89190] [8/9 regression][ARM] armv8-m.base invalid ldm ICE
Date: Wed, 13 Feb 2019 16:23:00 -0000
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--- Comment #2 from Wilco <wilco at gcc dot gnu.org> ---
Author: wilco
Date: Wed Feb 13 16:22:25 2019
New Revision: 268848
URL: https://gcc.gnu.org/viewcvs?rev=268848&root=gcc&view=rev
Log:
[ARM] Fix Thumb-1 ldm (PR89190)
This patch fixes an ICE in the Thumb-1 LDM peepholer. Thumb-1 LDMs
always update the base register except if the base is loaded.
The current implementation rejects LDMs where the base is not dead,
however this doesn't exclude the case where the base is loaded as
well as dead. Fix this by explicitly checking whether the base is
loaded. Also enable LDMs which load the first register.
gcc/
PR target/89190
* config/arm/arm.c (ldm_stm_operation_p) Set
addr_reg_in_reglist correctly for first register.
(load_multiple_sequence): Remove dead base check.
(gen_ldm_seq): Correctly set write_back for Thumb-1.
testsuite/
PR target/89190
* gcc.target/arm/pr89190.c: New test.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:25:44 2019
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 16:25:00 -0000
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--- Comment #4 from Stas Sergeev <stsp at users dot sourceforge.net> ---
Would it be possible to at least show the
correct line number where the register allocation
actually failed? gcc points to a rather "random"
line, and it required many hours of an engineer
work to find the problematic spot in a large project.
It really is not the good handling of this problem.
And I don't understand why it is impossible to add
error or warning if gcc emits 8bit reference for "r"
and knows it is not supposed to work.
>From gcc-bugs-return-633637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 16:26:48 2019
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Wed, 13 Feb 2019 16:26:00 -0000
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--- Comment #19 from H.J. Lu <hjl.tools at gmail dot com> ---
sse.md has
(define_insn "mov<mode>_internal"
[(set (match_operand:VMOVE 0 "nonimmediate_operand"
"=v,v ,v ,m")
(match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand"
" C,BC,vm,v"))]
....
/* There is no evex-encoded vmov* for sizes smaller than 64-bytes
in avx512f, so we need to use workarounds, to access sse registers
16-31, which are evex-only. In avx512vl we don't need workarounds. */
if (TARGET_AVX512F && <MODE_SIZE> < 64 && !TARGET_AVX512VL
&& (EXT_REX_SSE_REG_P (operands[0])
|| EXT_REX_SSE_REG_P (operands[1])))
{
if (memory_operand (operands[0], <MODE>mode))
{
if (<MODE_SIZE> == 32)
return "vextract<shuffletype>64x4\t{$0x0, %g1, %0|%0, %g1,
0x0}";
else if (<MODE_SIZE> == 16)
return "vextract<shuffletype>32x4\t{$0x0, %g1, %0|%0, %g1,
0x0}";
else
gcc_unreachable ();
}
...
However, ix86_hard_regno_mode_ok has
/* TODO check for QI/HI scalars. */
/* AVX512VL allows sse regs16+ for 128/256 bit modes. */
if (TARGET_AVX512VL
&& (mode == OImode
|| mode == TImode
|| VALID_AVX256_REG_MODE (mode)
|| VALID_AVX512VL_128_REG_MODE (mode)))
return true;
/* xmm16-xmm31 are only available for AVX-512. */
if (EXT_REX_SSE_REGNO_P (regno))
return false;
if (TARGET_AVX512F && <MODE_SIZE> < 64 && !TARGET_AVX512VL
&& (EXT_REX_SSE_REG_P (operands[0])
|| EXT_REX_SSE_REG_P (operands[1])))
is a dead code:
[hjl@gnu-4 gcc]$ cat /tmp/z.c
#include <immintrin.h>
extern __m128 i;
__m128
foo1 (void)
{
register __m128 xmm16 __asm ("xmm16") = i;
asm volatile ("" : "+v" (xmm16));
register __m128 xmm17 __asm ("xmm17") = xmm16;
asm volatile ("" : "+v" (xmm17));
return xmm17;
}
[hjl@gnu-4 gcc]$ /usr/gcc-5.4.1-x32/bin/gcc -S -O2 -march=knl /tmp/z.c
/tmp/z.c: In function ‘foo1’:
/tmp/z.c:8:19: error: register specified for ‘xmm16’ isn’t suitable for data
type
register __m128 xmm16 __asm ("xmm16") = i;
^
/tmp/z.c:10:19: error: register specified for ‘xmm17’ isn’t suitable for data
type
register __m128 xmm17 __asm ("xmm17") = xmm16;
^
[hjl@gnu-4 gcc]$
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Subject: [Bug c++/77304] ICE on C++ code with invalid template parameter: in gimplify_expr, at gimplify.c:11260
Date: Wed, 13 Feb 2019 16:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77304
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Done.
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Subject: [Bug c++/77304] ICE on C++ code with invalid template parameter: in gimplify_expr, at gimplify.c:11260
Date: Wed, 13 Feb 2019 16:36:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 13 16:35:44 2019
New Revision: 268849
URL: https://gcc.gnu.org/viewcvs?rev=268849&root=gcc&view=rev
Log:
PR c++/77304
* g++.dg/cpp2a/nontype-class13.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/nontype-class13.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89275] [9 Regression] Slowdown in mcperf on POWER
Date: Wed, 13 Feb 2019 16:36:00 -0000
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--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I asked our performance team to root-cause this when the report came out. If
they can reproduce we can try to bisect it.
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Subject: [Bug c++/89297] [9 Regression] ICE: unexpected expression 'id' of kind overload
Date: Wed, 13 Feb 2019 16:37:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00919.html
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
Date: Wed, 13 Feb 2019 16:44:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
template <typename T, int N> struct A {
T a[N];
constexpr T &operator[] (int x) { return a[x]; }
};
constexpr A<int, 16>
foo ()
{
A<int, 16> r{};
for (int i = 0; i < 6; ++i)
r[i + 8] = r[i] = i;
return r;
}
auto x = foo ();
Started to ICE with r217670, before that it has been accepted for a couple of
revisions and before that rejected.
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The ICE actually isn't when processing the loop, but later on when processing
the
VIEW_CONVERT_EXPR<struct A>({.a={0, 1, 2, 3, 4, 5, [8]=1, 2, 3, 4, 5, }});
expression.
When using
{
r[i] = i;
r[i + 8] = i;
}
as the loop body, I instead get:
{.a={0, 1, 2, 3, 4, 5, [8]=0, 1, 2, 3, 4, 5}}
In the bogus one, [8] doesn't have the value 0 but 1 and all the values are
shifted by 1, with [13] having NULL value, just non-NULL purpose.
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Subject: [Bug rtl-optimization/89295] [9 regression] compilation of gcc.dg-struct-layout-1/t001_x.c takes 30 times as long after r268404
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seurer at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #2 from seurer at gcc dot gnu.org ---
I just tried it and r268597 does fix it.
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
truncate:SI of ashift:DI looks wrong already; I'd expect ashift:SI of a subreg?
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Subject: [Bug rtl-optimization/89275] [9 Regression] Slowdown in mcperf on POWER
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
Ever confirmed|0 |1
--- Comment #4 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Either way, confirmed that we have an issue here. But I don't yet have
information to support this as a 9 regression.
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89275] [9 Regression] Slowdown in mcperf on POWER
Date: Wed, 13 Feb 2019 17:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89275
--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I just heard back from the performance lead. He indicates that they can
reproduce the numbers from 9.0 trunk (compiled Feb 8, versus Feb 3 as reported
by Phoronix), but the numbers from 8.2 as tagged do not reproduce. GCC 9
degrades a little on Add, but is in the noise range for Set/Append.
If we accept this (and I see no reason not to at the moment), we still have the
question of why GCC lags LLVM on this benchmark for *both* 8 and 9. So we will
continue to work on root-cause analysis.
>From gcc-bugs-return-633648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:24:36 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Wed, 13 Feb 2019 17:24:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #7)
> truncate:SI of ashift:DI looks wrong already; I'd expect ashift:SI of a
> subreg?
But then it would be a simplify-rtx.c issue. Though, not sure if it isn't too
late to change simplify-rtx.c to simplify that differently now.
>From gcc-bugs-return-633649-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:31:19 2019
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From: "rafael at espindo dot la" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89337] New: Bogus "exceeds maximum object size" on unreachable code
Date: Wed, 13 Feb 2019 17:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
Bug ID: 89337
Summary: Bogus "exceeds maximum object size" on unreachable
code
Product: gcc
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Created attachment 45704
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45704&action=edit
testcase
In the attached testcase the function drop3 has the precondition that the
provided string has a size of at least 3.
Given that, the body of the resize function is dead, but gcc doesn't realize it
and warns that we are passing -3 to memcpy.
>From gcc-bugs-return-633650-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:34:54 2019
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Wed, 13 Feb 2019 17:34:00 -0000
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--- Comment #1 from Rafael Avila de Espindola <rafael at espindo dot la> ---
The original testcase is from https://github.com/scylladb/seastar/issues/598
>From gcc-bugs-return-633651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:35:16 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 17:35:00 -0000
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Stas Sergeev from comment #4)
> Would it be possible to at least show the
> correct line number where the register allocation
> actually failed? gcc points to a rather "random"
> line
Hmm, getting a "correct" location is doable.
Something like:
diff --git a/gcc/final.c b/gcc/final.c
index f6edd6a1dfc..ab85f7dce91 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -2690,6 +2690,7 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int
optimize_p ATTRIBUTE_UNUSED,
rtx *ops = XALLOCAVEC (rtx, noperands);
const char *string;
location_t loc;
+ location_t saved_loc;
expanded_location expanded;
/* There's no telling what that did to the condition codes. */
@@ -2702,6 +2703,10 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int
optimize_p ATTRIBUTE_UNUSED,
this_is_asm_operands = insn;
expanded = expand_location (loc);
+ saved_loc = input_location;
+ input_location = loc;
+
+
#ifdef FINAL_PRESCAN_INSN
FINAL_PRESCAN_INSN (insn, ops, insn_noperands);
#endif
@@ -2725,6 +2730,8 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int
optimize_p ATTRIBUTE_UNUSED,
insn_noperands);
this_is_asm_operands = 0;
+
+ input_location = saved_loc;
break;
}
Untested (both building and running).
>From gcc-bugs-return-633652-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:40:49 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Wed, 13 Feb 2019 17:40:00 -0000
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--- Comment #13 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Yes, please look at my previous comment. I believe the problem is in the
VEC_EXTRACT processing in rs6000-c.c until proven otherwise... can you please
try my debugging suggestion?
>From gcc-bugs-return-633653-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 17:43:15 2019
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Subject: [Bug c++/87322] [8/9 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
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--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Feb 13 17:42:39 2019
New Revision: 268850
URL: https://gcc.gnu.org/viewcvs?rev=268850&root=gcc&view=rev
Log:
[PR87322] move cp_evaluated up to tsubst all lambda parms
A lambda capture variable initialized with a lambda expr taking more
than one parameter got us confused.
The first problem was that the parameter list was cut short during
tsubsting because we tsubsted it with cp_unevaluated_operand. We
reset it right after, to tsubst the function body, so I've moved the
reset up so that it's in effect while processing the parameters as
well.
The second problem was that the lambda expr appeared twice, once in a
decltype that gave the capture variable its type, and once in its
initializer. This caused us to instantiate two separate lambda exprs
and closure types, and then to flag that the lambda expr in the
initializer could not be converted to the unrelated closure type
determined for the capture variable. Recording the tsubsted expr in
the local specialization map, and retrieving it for reuse fixed it.
However, that required some care to avoid reusing the lambda expr
across different indices in pack expansions.
for gcc/cp/ChangeLog
PR c++/87322
* pt.c (tsubst_lambda_expr): Avoid duplicate tsubsting.
Move cp_evaluated resetting before signature tsubsting.
(gen_elem_of_pack_expansion_instantiation): Separate local
specializations per index.
for gcc/testsuite/ChangeLog
PR c++/87322
* g++.dg/cpp1y/pr87322.C: New.
* g++.dg/cpp0x/lambda/lambda-variadic5.C: Test that we
instantiate the expected number of lambda functions.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/pr87322.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-variadic5.C
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45685|0 |1
is obsolete| |
--- Comment #20 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45705
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45705&action=edit
An updated patch
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Subject: [Bug inline-asm/89334] unsupported size for integer register
Date: Wed, 13 Feb 2019 17:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89334
Stas Sergeev <stsp at users dot sourceforge.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #6 from Stas Sergeev <stsp at users dot sourceforge.net> ---
Thanks Andrew!
Please, make gcc better, not worse.
Prev versions generated "%sil", which,
while silly, was at least traceable.
And now the things are completely cryptic.
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Subject: [Bug target/89338] New: sse-cvtss2si-[12].c fails on PPC Big Endian
Date: Wed, 13 Feb 2019 17:53:00 -0000
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Bug ID: 89338
Summary: sse-cvtss2si-[12].c fails on PPC Big Endian
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Subject: [Bug target/89339] New: sse-movmskb-1.c fails for PPC Big Endian
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>From gcc-bugs-return-633658-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 18:05:03 2019
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Subject: [Bug c/89312] snprintf warning is unparsable and not confusing
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
In the future, the warnings for problems unrelated to truncation should be
moved under their own options (e.g., null pointer arguments to %s should be
controlled by either -Wnonnull or -Wnull-dereference).
Your solution/workaround will work but GCC will only eliminate the test when it
can prove the condition cannot be true. For example, below the test and the
assignment are eliminated because given the sizes of the two input arrays the
snprintf result cannot be greater than 40 (compile with
-fdump-tree-optimized=/dev/stdout to see the result):
char a[20], b[20];
char d[40];
void f (void)
{
int r = snprintf (d, sizeof d, "%s %s", a, b);
if (r >= sizeof d)
d[sizeof d - 1] = 0;
}
But if you change a to have, say, 30 elements (or make it a pointer) the test
is not eliminated anymore because GCC can no longer prove that it won't cause
truncation (the possible truncation can then be detected by using
-Wformat-truncation=2).
The same effect can be achieved without the overhead by introducing a volatile
temporary variable for the destination size, but it's also ugly. Another
option is to introduce a wrapper function or macro for deliberately truncating
snprintf calls and have it hide the ugliness:
#define snprintf_trunc(dst, size, ...) \
do { \
volatile size_t n = size; \
snprintf (dst, n, __VA_ARGS__); \
} while (0)
I agree that clunky workarounds shouldn't be necessary. Ideally, there would
be an elegant or at least intuitive way to indicate the truncation is expected
without jumping through these hoops. A few people have suggested a cast to
void as that annotation. We had considered it but didn't implement it because
legacy code routinely uses casts to void as a (superfluous) convention to
indicate that the result of a function call is deliberately unused, but not
necessarily with an appreciation of the consequences of what it might mean for
snprintf. Perhaps we should revisit that decision.
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
It looks more like the kind of thing that combine make_extraction,
make_compound_operation, expand_compound_operation comes up with.
This is not a new problem.
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Subject: [Bug c/89340] New: ICE in function_and_variable_visibility, at ipa-visibility.c:707
Date: Wed, 13 Feb 2019 18:12:00 -0000
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Bug ID: 89340
Summary: ICE in function_and_variable_visibility, at
ipa-visibility.c:707
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Affects versions down to at least gcc-5 :
$ cat z1.c
void foo ()
{
__attribute__((weak))
void bar () { }
bar();
}
$ gcc-9-20190210 -c z1.c
during IPA pass: visibility
z1.c:6:1: internal compiler error: in function_and_variable_visibility, at
ipa-visibility.c:707
6 | }
| ^
0x1200e11 function_and_variable_visibility
../../gcc/ipa-visibility.c:703
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Subject: [Bug c/89341] New: ICE in get, at cgraph.h:1332
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Bug ID: 89341
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With option -O0 down to at least gcc-5 :
$ cat z1.c
__attribute__((weakref("bar")))
static void foo () { }
void foo ();
$ gcc-9-20190210 -c z1.c -O1
$
$ gcc-9-20190210 -c z1.c -O0
z1.c:2:13: internal compiler error: Segmentation fault
2 | static void foo () { }
| ^~~
0xa8aa9f crash_signal
../../gcc/toplev.c:326
0x70c90a cgraph_node* dyn_cast<cgraph_node*, symtab_node>(symtab_node*)
../../gcc/is-a.h:227
0x70c90a cgraph_node::get(tree_node const*)
../../gcc/cgraph.h:1333
0x70c90a cgraph_node::analyze()
../../gcc/cgraphunit.c:640
0x70f457 analyze_functions
../../gcc/cgraphunit.c:1126
0x70fd92 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2834
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Subject: [Bug inline-asm/89334] unsupported size for integer register
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #7 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Isolated testcase for diagnostic enhancement (-O2 -m32, want error on line 6
rather than line 12):
static inline
void f(void)
{
int si;
asm("" : "=S"(si));
asm("# %0" :: "r"((char)si));
}
void wrapper(void)
{
f();
}
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Subject: [Bug c/89342] New: ICE in maybe_default_option, at opts.c:347
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89342
Bug ID: 89342
Summary: ICE in maybe_default_option, at opts.c:347
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Affected by options -O[gs012] down to at least gcc-5,
compiles of course with -O3 or -Ofast (not sure if legal) :
$ cat z1.c
__attribute__((optimize("Ofast")))
void foo ()
{
__attribute__((optimize("align-functions=16")))
void bar () {}
}
$ gcc-9-20190210 -c z1.c -O3
$
$ gcc-9-20190210 -c z1.c
z1.c: In function 'foo':
z1.c:5:3: internal compiler error: in maybe_default_option, at opts.c:347
5 | void bar () {}
| ^~~~
0x127e18f maybe_default_option
../../gcc/opts.c:347
0x127fcfb maybe_default_options
../../gcc/opts.c:433
0x127fcfb default_options_optimization(gcc_options*, gcc_options*,
cl_decoded_option*, unsigned int, unsigned int, unsigned int,
cl_option_handlers const*, diagnostic_context*)
../../gcc/opts.c:652
0x9c0cf9 decode_options(gcc_options*, gcc_options*, cl_decoded_option*,
unsigned int, unsigned int, diagnostic_context*, void (*)())
../../gcc/opts-global.c:308
0x668256 parse_optimize_options(tree_node*, bool)
../../gcc/c-family/c-common.c:5731
0x68fd87 handle_optimize_attribute
../../gcc/c-family/c-attribs.c:3893
0x5d5e57 decl_attributes(tree_node**, tree_node*, int, tree_node*)
../../gcc/attribs.c:719
0x5ed501 start_function(c_declspecs*, c_declarator*, tree_node*)
../../gcc/c/c-decl.c:8907
0x6300d8 c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:2258
0x62f46a c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:5070
0x62f556 c_parser_compound_statement
../../gcc/c/c-parser.c:4982
0x630cca c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:2354
0x635d73 c_parser_external_declaration
../../gcc/c/c-parser.c:1653
0x636839 c_parser_translation_unit
../../gcc/c/c-parser.c:1534
0x636839 c_parse_file()
../../gcc/c/c-parser.c:19842
0x67cca0 c_common_parse_file()
../../gcc/c-family/c-opts.c:1155
>From gcc-bugs-return-633664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 18:24:36 2019
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From: "sean.wang at wdc dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Wed, 13 Feb 2019 18:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89321
--- Comment #4 from sean.wang at wdc dot com ---
The assert it reached was this I think:
gcc_assert(field == NULL_TREE);
Thanks, Ian. It is helpful. I think I found a way to reproduce this issue on a
smaller set of code. Will provide an example once I have everything stubbed
out.
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From: "aoliva at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87322] [8 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
Date: Wed, 13 Feb 2019 18:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87322
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] GCC fails |[8 Regression] GCC fails to
|to parse captured lambda of |parse captured lambda of
|2nd inner lambda if the |2nd inner lambda if the
|captured lambda has "," |captured lambda has ","
|(having 2 arguments) |(having 2 arguments)
Known to fail|9.0 |
--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed for GCC 9.
>From gcc-bugs-return-633666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 18:47:22 2019
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Subject: [Bug target/88308] ICE in maybe_record_trace_start, at dwarf2cfi.c:2309
Date: Wed, 13 Feb 2019 18:47:00 -0000
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--- Comment #5 from acsawdey at gcc dot gnu.org ---
After some more digging, it appears that the problem is
move_insn_for_shrink_wrap() is deleting and re-creating insns to move them from
one BB to another. The label reference count gets decremented in delete_insn()
but does not get re-incremented when the new insn is created in a different BB.
If you add -fno-shrink-wrap, the ICE does not occur.
>From gcc-bugs-return-633667-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 18:58:13 2019
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Subject: [Bug target/89343] New: Some MMX instructions aren't properly marked
Date: Wed, 13 Feb 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89343
Bug ID: 89343
Summary: Some MMX instructions aren't properly marked
Product: gcc
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Target: i386, x86-64
(define_insn "*vec_concatv2sf_sse4_1"
 [(set (match_operand:V2SF 0 "register_operand"
     "=Yr,*x, v,Yr,*x,v,v,*y ,*y")
    (vec_concat:V2SF
     (match_operand:SF 1 "nonimmediate_operand"
     "  0, 0,Yv, 0,0, v,m, 0 , m")
     (match_operand:SF 2 "nonimm_or_0_operand"
     " Yr,*x,Yv, m,m, m,C,*ym, C")))]
 "TARGET_SSE4_1 && !(MEM_P (operands[1]) && MEM_P (operands[2]))"
 "@
  unpcklps\t{%2, %0|%0, %2}
  unpcklps\t{%2, %0|%0, %2}
  vunpcklps\t{%2, %1, %0|%0, %1, %2}
  insertps\t{$0x10, %2, %0|%0, %2, 0x10}
  insertps\t{$0x10, %2, %0|%0, %2, 0x10}
  vinsertps\t{$0x10, %2, %1, %0|%0, %1, %2, 0x10}
  %vmovss\t{%1, %0|%0, %1}
  punpckldq\t{%2, %0|%0, %2}
  movd\t{%1, %0|%0, %1}"
 [(set (attr "isa")
   (cond [(eq_attr "alternative" "0,1,3,4")
       (const_string "noavx")
      (eq_attr "alternative" "2,5")
       (const_string "avx")
      ]
      (const_string "*")))
(define_insn "*vec_concatv2sf_sse"
 [(set (match_operand:V2SF 0 "register_operand"   "=x,x,*y,*y")
    (vec_concat:V2SF
     (match_operand:SF 1 "nonimmediate_operand" " 0,m, 0, m")
     (match_operand:SF 2 "reg_or_0_operand"   " x,C,*y, C")))]
 "TARGET_SSE"
 "@
  unpcklps\t{%2, %0|%0, %2}
  movss\t{%1, %0|%0, %1}
  punpckldq\t{%2, %0|%0, %2}
  movd\t{%1, %0|%0, %1}"
 [(set_attr "type" "sselog,ssemov,mmxcvt,mmxmov")
  (set_attr "mode" "V4SF,SF,DI,DI")])
The movd alternatives only require MMX.
>From gcc-bugs-return-633668-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:09:33 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86379] [8/9 Regression] Class member access of |using|'d field goes horribly awry in presence of templates
Date: Wed, 13 Feb 2019 19:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86379
--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Feb 13 19:08:52 2019
New Revision: 268851
URL: https://gcc.gnu.org/viewcvs?rev=268851&root=gcc&view=rev
Log:
[PR86379] do not use TREE_TYPE for USING_DECL_SCOPE
It's too risky to reuse the type field for USING_DECL_SCOPE.
Language-independent parts of the compiler, such as location and
non-lvalue wrappers, happily take the TREE_TYPE of a USING_DECL as if
it was a type rather than an unrelated scope.
For better or worse, USING_DECLs use the non-common struct so we can
use the otherwise unused result field. Adjust fallout, from uses of
TREE_TYPE that were supposed to be USING_DECL_SCOPE, to other
accidental uses of TREE_TYPE of a USING_DECL.
for gcc/cp/ChangeLog
PR c++/86379
* cp-tree.h (USING_DECL_SCOPE): Use result rather than type.
* name-lookup.c (strip_using_decl): Use USING_DECL_SCOPE.
* search.c (protected_accessible_p): Follow USING_DECL_DECLS.
(shared_member_p): Likewise.
(lookup_member): Likewise.
* decl.c (grok_special_member_properties): Skip USING_DECLs.
* semantics.c (finish_omp_declare_simd_methods): Likewise.
(finish_qualified_id_expr): Do not call shared_member_p with
a dependent expr.
for gcc/testsuite/ChangeLog
PR c++/86379
* g++.dg/cpp0x/pr86379.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr86379.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl.c
trunk/gcc/cp/name-lookup.c
trunk/gcc/cp/search.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Blocks| |88443
Resolution|--- |INVALID
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
In the test case from attachment 45704:
struct sstring {
size_t _size;
sstring(size_t size) : _size(size) { memset(begin(), '\n', size); }
size_t size() const noexcept { return _size; }
void resize(size_t n) {
if (n > size()) {
sstring x(n - size());
}
}
char *begin();
};
void drop3(sstring &name) { name.resize(name.size() - 3); }
GCC can't see that drop3() cannot be called with name.size() < 3, and in
resize, the condition (n > size()) can only be true only when name.size() < 3
so n - size() is unavoidably too large.
To avoid the warning make the precondition explicit:
void drop3(sstring &name)
{
if (name.size () < 3)
__builtin_unreachable ();
name.resize(name.size() - 3);
}
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443
[Bug 88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
Date: Wed, 13 Feb 2019 19:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443
Bug 88443 depends on bug 89337, which changed state.
Bug 89337 Summary: Bogus "exceeds maximum object size" on unreachable code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
>From gcc-bugs-return-633671-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:19:41 2019
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From: "aoliva at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86379] [8 Regression] Class member access of |using|'d field goes horribly awry in presence of templates
Date: Wed, 13 Feb 2019 19:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86379
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] Class |[8 Regression] Class member
|member access of |using|'d |access of |using|'d field
|field goes horribly awry in |goes horribly awry in
|presence of templates |presence of templates
Known to fail|9.0 |
--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed for GCC 9.
>From gcc-bugs-return-633672-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:21:18 2019
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From: "rafael at espindo dot la" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Wed, 13 Feb 2019 19:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
--- Comment #3 from Rafael Avila de Espindola <rafael at espindo dot la> ---
> GCC can't see that drop3() cannot be called with name.size() < 3, and in
> resize, the condition (n > size()) can only be true only when name.size() <
> 3 so n - size() is unavoidably too large.
That is why gcc should not warn about it :-)
The original testcase had
if (boost::algorithm::ends_with(name, "%2A")) {
name.resize(name.length() - 3);
I think it is fair to say that:
* The code is valid, if something ends with "%2A" the size is >= 3.
* GCC should not be required to figure out the above implication.
* The developer should not be required to add a __builtin_unreachable() to
avoid a warning in the above code.
I will re reduce the testcase keeping the ends_with and attach.
>From gcc-bugs-return-633673-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:23:25 2019
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From: "urbanjost at comcast dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89344] New: intent
Date: Wed, 13 Feb 2019 19:23:00 -0000
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Bug ID: 89344
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>From gcc-bugs-return-633674-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:24:45 2019
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From: "kelvin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Wed, 13 Feb 2019 19:24:00 -0000
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--- Comment #14 from kelvin at gcc dot gnu.org ---
To reconcile comments 12 and 13, the subtle issue is that we don't even get
into the altivec_resolve_overloaded_builtin function for the following code:
vec_extract (vi, 10);
The gimple expander replaces this code with BIT_FIELD_REF <> before even
attempting to expand this overloaded builtin.
However, in the case that the "identical" code is represented by inlined
function X, we do come through altivec_resolve_overloaded_builtin.
int X (vector int vi, int index) {
return vec_extract (vi, index);
}
...
X (vi, 10)
There are "two" ways to fix this problem. Either we can make the gimple
expansion of in-lined functions match the non-inlined functions, or we can
insert code into altivec_resolve_overloaded_builtin to accommodate the
inconsistencies.
I gather you prefer I address this within altivec_resolve_overloaded_builtin.
I'll pursue this unless directed otherwise.
>From gcc-bugs-return-633675-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:30:33 2019
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Subject: [Bug fortran/89344] uncaught programmer error: polymorphic variable is INTENT(IN) but assigned to without error
Date: Wed, 13 Feb 2019 19:30:00 -0000
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urbanjost at comcast dot net changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Summary|intent |uncaught programmer error:
| |polymorphic variable is
| |INTENT(IN) but assigned to
| |without error
--- Comment #1 from urbanjost at comcast dot net ---
program demo_setval
call setval(value)
write(*,*)'VALUE=',value
CONTAINS
subroutine setval(value)
class(*),intent(in) :: value
select type(value)
type is (integer); value=10
type is (real); value=10.20
end select
end subroutine setval
end program demo_setval
! expect to get something like
! Error: Dummy argument 'value' with INTENT(IN) in variable definition
context (assignment) at (1)
! but do not even though VALUE is INTENT(IN) and changed the value
There is a programmer error in the example program. The variable VALUE has been
declared to be INTENT(IN) but the routine assigns a value to the variable. This
should be caught at compile time.
>From gcc-bugs-return-633676-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 19:39:10 2019
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From: "mib.bugzilla at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89345] New: gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
Date: Wed, 13 Feb 2019 19:39:00 -0000
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Bug ID: 89345
Summary: gcc9 <new> uses constexpr token, can you change to
_GLIBCXX_CONSTEXPR ?
Product: gcc
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In the patch to add destroying_delete, (Implement P0722R3, destroying operator
delete.) the constexpr token is used directly, can you modify this to use the
macro e.g. _GLIBCXX_CONSTEXPR. For example, recently the clang compiler
predefines __cpp_impl_destroying_delete and this causes the <new> header to
fail compilation if compiling with option -std=c++98.
This issue is discussed here, https://reviews.llvm.org/D55741
Thanks and regards
--Melanie Blower
(I work on the Intel C++ compiler)
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89341] ICE in get, at cgraph.h:1332
Date: Wed, 13 Feb 2019 19:44:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Fails here in cgraph_node::get:
1332 gcc_checking_assert (TREE_CODE (decl) == FUNCTION_DECL);
639 if (alias)
640 resolve_alias (cgraph_node::get (alias_target), transparent_alias);
where "decl" == "alias_target" == the IDENTIFIER_NODE "bar", not a
FUNCTION_DECL.
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45706
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45706&action=edit
gcc9-pr89336.patch
Untested fix. Pointing a pointer into a middle of vector that might be
reallocated or where new elements might be added before the one to which we
store (and that addition memmoves all the rest upwards) is dangerous.
This patch should fix that, except that it doesn't fix union handling. I think
e.g.
constexpr int foo () {
union U { int a; long b; };
union V { union U u; short v; };
V w {};
w.u.a = w.v = w.u.b = 5L;
return w.u.a;
}
static_assert (foo () == 5, "");
ICEs with it (previously it would fail). Is the testcase valid C++?
clang++ rejects it. The question is when exactly becomes a union member active
on the assignment, if only after evaluating the rhs, or it first becomes active
member, then rhs is evaluated.
>From gcc-bugs-return-633679-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 20:18:13 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89283] [8/9 Regression] ICE: Segmentation fault (in stmt_could_throw_1_p)
Date: Wed, 13 Feb 2019 20:18:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
At 008t.lower we have:
sz (int i0)
{
int D.1911;
D.1911 = zn ();
goto <D.1912>;
_1 = i0 + 1;
_2 = zn ();
_3 = _1 >= _2;
D.1911 = (int) _3;
goto <D.1912>;
<D.1912>:
return D.1911;
}
It then tried to build the CFG, but dies verifying it, accessing a freed
SSA_NAME:
(gdb) call debug_tree (t)
<ssa_name 0x7ffff18b7cf0 nothrow
def_stmt
version:1 in-free-list>
The SSA_NAME is freed because the BB is deleted during CFG creation, in
cleanup_control_flow_pre here:
780 basic_block bb = BASIC_BLOCK_FOR_FN (cfun, i);
781 if (bb && !bitmap_bit_p (visited, bb->index))
782 {
783 if (!retval)
784 free_dominance_info (CDI_DOMINATORS);
785 delete_basic_block (bb);
786 retval = true;
787 }
Presumably that code needs to handle whatever it is that "returns_twice" does
to the function.
>From gcc-bugs-return-633680-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 20:26:45 2019
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Subject: [Bug c++/89300] C++ requires statement does not fail silently for const void *
Date: Wed, 13 Feb 2019 20:26:00 -0000
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Casey Carter <Casey at Carter dot net> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Casey Carter <Casey at Carter dot net> ---
This seems to be a duplicate of #78173.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89271] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Wed, 13 Feb 2019 21:20:00 -0000
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--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
> This is because IRA does
>
> r125: preferred NO_REGS, alternative NO_REGS, allocno NO_REGS
>
> a1(r125,l0) costs: BASE_REGS:14004,14004 GENERAL_REGS:14004,14004-
> LINK_REGS:24010,24010 CTR_REGS:24010,24010 LINK_OR_CTR_REGS:24010,24010-
> SPEC_OR_GEN_REGS:24010,24010 MEM:12000,12000
>
> and it then chooses disposition mem for r125.
>
> In GCC 8 and before combine already has decided to use GPR3 (the first
> argument register) for this, so there was no RA here before.
The very first ira-costs pass runs in sched1 and it generates the following
costs
r125 costs: BASE_REGS:10000 GENERAL_REGS:10000 LINK_REGS:20000 CTR_REGS:20000
LINK_OR_CTR_REGS:20000 SPEC_OR_GEN_REGS:20000 MEM:8000
The costs in IRA are bit different because we calculate costs knowing our
preference for p125 as NO_REGS.
Why does IRA calculate such costs? We have 2 insns involving p125
15: r125:DI=%3:DI
REG_DEAD %3:DI
7: {r123:SI=asm_operands/*r125 with constraint 'v'*/;clobber ca:SI;}
Cost of moving r3 into p125 is 2 for base regs and 4 for memory
Cost of moving p125 into a v reg is 8 for base regs and 4 for memory
Therefore cost of p125 is 10 for base reg and 8 for memory (multiplied by BB
frequency 10000).
Therefore IRA chooses memory for p125.
In this particular case insn 15 can go away when we assign r3 to p125. It
means the cost for base reg could be 8 as for memory but IRA can not say in
general case that it can assign r3 to p125.
I think increasing memory move cost at least to 5 could solve the problem. But
probably it needs benchmarking SPEC, besides running GCC testsuite, to see that
the performance is not worse after such change.
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Subject: [Bug c++/89297] [9 Regression] ICE: unexpected expression 'id' of kind overload
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 13 21:39:18 2019
New Revision: 268854
URL: https://gcc.gnu.org/viewcvs?rev=268854&root=gcc&view=rev
Log:
PR c++/89297 - ICE with OVERLOAD in template.
* semantics.c (finish_compound_literal): Call
instantiate_non_dependent_expr_sfinae.
* g++.dg/cpp0x/initlist113.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist113.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89297] [9 Regression] ICE: unexpected expression 'id' of kind overload
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/89229] Unnecessary ZMM in movoi_internal_avx/movti_internal
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45705|0 |1
is obsolete| |
--- Comment #21 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45707
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45707&action=edit
A new patch
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Subject: [Bug libstdc++/89345] gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Ever confirmed|0 |1
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Subject: [Bug libstdc++/89345] gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I already started fixing this after your update to the phabricator update
pinged me an email. I'm just going to make it conditional on __cplusplus >
201703L.
>From gcc-bugs-return-633688-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 21:59:51 2019
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Subject: [Bug target/89343] Some MMX instructions aren't properly marked
Date: Wed, 13 Feb 2019 21:59:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
There is nothing wrong with MMX alternatives in SSE patterns. MMX registers can
carry V2SI/V2SF values as well, and these alternatives will be correctly
disabled with -mno-mmx.
>From gcc-bugs-return-633687-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 21:59:46 2019
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Subject: [Bug fortran/89344] uncaught programmer error: polymorphic variable is INTENT(IN) but assigned to without error
Date: Wed, 13 Feb 2019 21:59:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #2 from kargl at gcc dot gnu.org ---
My version of gfortran gives
% gfcx -c a.f90
a.f90:8:35:
8 | type is (integer); value=10
| 1
Error: Dummy argument 'value' with INTENT(IN) in variable definition context
(assignment) at (1)
a.f90:9:35:
9 | type is (real); value=10.20
| 1
Error: Dummy argument 'value' with INTENT(IN) in variable definition context
(assignment) at (1)
>From gcc-bugs-return-633689-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 22:03:09 2019
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Subject: [Bug fortran/89344] uncaught programmer error: polymorphic variable is INTENT(IN) but assigned to without error
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--- Comment #3 from kargl at gcc dot gnu.org ---
Created attachment 45708
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45708&action=edit
Patch that detects and issues an error.
Patch that detects and issues an error. Trunk is in stage 4, so the patch will
likely get committed after 9.1 is released.
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Subject: [Bug c++/89300] C++ requires statement does not fail silently for const void *
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It certainly does, thanks.
*** This bug has been marked as a duplicate of bug 78173 ***
>From gcc-bugs-return-633693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 22:13:34 2019
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Subject: [Bug c++/78173] Hard error subtracting pointers to incomplete type in SFINAE context
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-633691-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 22:13:02 2019
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Subject: [Bug c++/78173] Hard error subtracting pointers to incomplete type in SFINAE context
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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CC| |svenja.mehringer at gmail dot com
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89300 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 13 22:13:03 2019
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Subject: [Bug c++/67491] [meta-bug] concepts issues
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Bug 67491 depends on bug 89300, which changed state.
Bug 89300 Summary: C++ requires statement does not fail silently for const void *
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89300
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Subject: [Bug libstdc++/89345] gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Done
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Subject: [Bug libstdc++/89345] gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89345
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Feb 13 22:13:45 2019
New Revision: 268856
URL: https://gcc.gnu.org/viewcvs?rev=268856&root=gcc&view=rev
Log:
PR libstdc++/89345 Only define std::destroying_delete for C++2a
Clang defines the __cpp_impl_destroying_delete macro unconditionally, so
that the feature is supported whenever the library type is defined. This
is incompatible with the current definition in libstdc++ because we use
constexpr and inline variables, which will give an error for older -std
modes.
This patch defines the destroying_delete_t type and destroying_delete
variable independently of the __cpp_impl_destroying_delete macro, but
only for C++2a (because the names aren't reserved for previous
standards). The __cpp_lib_destroying_delete macro is only defined when
both the library type and compiler macro are defined (i.e. when the type
can actually be used as intended).
PR libstdc++/89345
* include/std/version [__cpp_impl_destroying_delete]
(__cpp_lib_destroying_delete): Only define for C++2a and later.
* libsupc++/new [__cpp_impl_destroying_delete]
(__cpp_lib_destroying_delete): Likewise.
(destroying_delete_t, destroying_delete): Likewise, but define even
when __cpp_impl_destroying_delete is not defined.
* testsuite/18_support/destroying_delete.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/18_support/destroying_delete.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/version
trunk/libstdc++-v3/libsupc++/new
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Subject: [Bug libstdc++/89345] gcc9 <new> uses constexpr token, can you change to _GLIBCXX_CONSTEXPR ?
Date: Wed, 13 Feb 2019 22:21:00 -0000
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--- Comment #4 from mib.bugzilla at gmail dot com ---
thank you!
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Subject: [Bug target/89346] New: Unnecessary EVEX encoding
Date: Wed, 13 Feb 2019 22:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89346
Bug ID: 89346
Summary: Unnecessary EVEX encoding
Product: gcc
Version: 9.0
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Severity: normal
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CC: ubizjak at gmail dot com
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Target: i386,x86-64
[hjl@gnu-skx-1 gcc]$ cat x.c
#include <immintrin.h>
long long *p;
volatile __m256i yy;
void
foo (void)
{
_mm256_store_epi64 (p, yy);
}
[hjl@gnu-skx-1 gcc]$ gcc -S -O2 x.c -march=skylake-avx512
[hjl@gnu-skx-1 gcc]$ cat x.s
.file "x.c"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB5168:
.cfi_startproc
vmovdqa64 yy(%rip), %ymm0 <<< No need for EVEX.
movq p(%rip), %rax
vmovdqa64 %ymm0, (%rax) <<< No need for EVEX.
vzeroupper
ret
.cfi_endproc
.LFE5168:
.size foo, .-foo
.comm yy,32,32
.comm p,8,8
.ident "GCC: (GNU) 8.2.1 20190209 (Red Hat 8.2.1-8)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-skx-1 gcc]$
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Subject: [Bug fortran/88248] [F18] Bogus warning about obsolescent feature: Labeled DO statement
Date: Wed, 13 Feb 2019 22:41:00 -0000
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--- Comment #7 from Harald Anlauf <anlauf at gmx dot de> ---
Patch submitted:
https://gcc.gnu.org/ml/fortran/2019-02/msg00112.html
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Subject: [Bug rtl-optimization/89271] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Wed, 13 Feb 2019 22:46:00 -0000
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Thanks for the analysis!
(In reply to Vladimir Makarov from comment #1)
> The very first ira-costs pass runs in sched1 and it generates the following
> costs
> r125 costs: BASE_REGS:10000 GENERAL_REGS:10000 LINK_REGS:20000
> CTR_REGS:20000 LINK_OR_CTR_REGS:20000 SPEC_OR_GEN_REGS:20000 MEM:8000
> Why does IRA calculate such costs? We have 2 insns involving p125
> 15: r125:DI=%3:DI
> REG_DEAD %3:DI
> 7: {r123:SI=asm_operands/*r125 with constraint 'v'*/;clobber ca:SI;}
>
> Cost of moving r3 into p125 is 2 for base regs and 4 for memory
> Cost of moving p125 into a v reg is 8 for base regs and 4 for memory
Ah, so we we need to improve that.
This is power8, where mtvsr insns are still a bit expensive, but not more
expensive than memory.
> Therefore cost of p125 is 10 for base reg and 8 for memory (multiplied by BB
> frequency 10000).
>
> Therefore IRA chooses memory for p125.
>
> In this particular case insn 15 can go away when we assign r3 to p125. It
> means the cost for base reg could be 8 as for memory but IRA can not say in
> general case that it can assign r3 to p125.
>
> I think increasing memory move cost at least to 5 could solve the problem.
> But probably it needs benchmarking SPEC, besides running GCC testsuite, to
> see that the performance is not worse after such change.
Agreed.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89344] uncaught programmer error: polymorphic variable is INTENT(IN) but assigned to without error
Date: Wed, 13 Feb 2019 23:23:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-13
Ever confirmed|0 |1
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
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--- Comment #5 from sean.wang at wdc dot com ---
Created attachment 45709
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45709&action=edit
code sample for reproducing reported error
code sample for reproducing reported error is attached.
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Thu, 14 Feb 2019 00:53:00 -0000
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Rafael Avila de Espindola <rafael at espindo dot la> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45704|0 |1
is obsolete| |
--- Comment #4 from Rafael Avila de Espindola <rafael at espindo dot la> ---
Created attachment 45710
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testcase where the string size should still be visible to the compiler
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Subject: [Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
Date: Thu, 14 Feb 2019 00:53:00 -0000
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Bug 88443 depends on bug 89337, which changed state.
Bug 89337 Summary: Bogus "exceeds maximum object size" on unreachable code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
>From gcc-bugs-return-633703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 00:53:51 2019
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From: "rafael at espindo dot la" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Thu, 14 Feb 2019 00:53:00 -0000
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Rafael Avila de Espindola <rafael at espindo dot la> changed:
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--- Comment #5 from Rafael Avila de Espindola <rafael at espindo dot la> ---
Reopening with an expanded testcase.
>From gcc-bugs-return-633705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 01:44:22 2019
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Subject: [Bug c++/89244] __builtin_is_constant_evaluated not documented
Date: Thu, 14 Feb 2019 01:44:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01000.html
>From gcc-bugs-return-633707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 01:56:58 2019
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Subject: [Bug rtl-optimization/89271] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Thu, 14 Feb 2019 01:56:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
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Last reconfirmed| |2019-02-14
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>From gcc-bugs-return-633706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 01:56:33 2019
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Subject: [Bug rtl-optimization/89271] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Thu, 14 Feb 2019 01:56:00 -0000
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--- Comment #3 from Alan Modra <amodra at gmail dot com> ---
I believe this is a bug in rs6000_register_move_cost. Testing a fix.
>From gcc-bugs-return-633708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 01:59:18 2019
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Thu, 14 Feb 2019 01:59:00 -0000
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--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I kindasorta thought that's what I want. ;-) But now that I understand what
you're saying, I believe I agree with you that this is probably a problem in
our gimple folding. I am going to shut up now and stay out of your way, as I
believe you have a much better grasp on this than I do at the moment...
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/86153] [8 regression] test case g++.dg/pr83239.C fails starting with r261585
Date: Thu, 14 Feb 2019 03:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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CC| |rafael at espindo dot la
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 89337 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 03:52:14 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
Date: Thu, 14 Feb 2019 03:52:00 -0000
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Bug 88443 depends on bug 89337, which changed state.
Bug 89337 Summary: Bogus "exceeds maximum object size" on unreachable code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
>From gcc-bugs-return-633709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 03:52:11 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Thu, 14 Feb 2019 03:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Thank you for the updated test case. The original looked similar to bug 86153
to me at first but then I decided it was different. The new test case is very
close to the one in that bug, and is not diagnosed with the top of trunk
anymore thanks to the fix in r267252. I think it's safe to resolve this as a
duplicate of that bug. Let me add your test case to the test suite. (If the
warning persists in your code even with the latest GCC 9.0 please reopen the
bug with an updated test case.)
*** This bug has been marked as a duplicate of bug 86153 ***
>From gcc-bugs-return-633712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 04:37:44 2019
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From: "maninder1.s at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89347] New: gc-sections doesn't remove unused bss section variables.
Date: Thu, 14 Feb 2019 04:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89347
Bug ID: 89347
Summary: gc-sections doesn't remove unused bss section
variables.
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
code snippet:-
int init_bss_unused[10] = {0}; // explicilty initialised with 0
int init_bss_used[10] = {0}; // explicilty initialised with 0
int uninit_bss_unused[10];
int uninit_bss_used[10];
int main()
{
uninit_bss_used[5] = 6;
init_bss_used[5] = 7;
return 0;
}
$gcc -fdata-sections -ffunction-sections -Wl,--gc-sections bss.c
$nm -a | grep _bss_
00020714 B init_bss_used // removed init_bss_unused.
00020764 B uninit_bss_unused // not removed.
>From gcc-bugs-return-633713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 04:42:02 2019
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Subject: [Bug c/89347] gc-sections doesn't remove unused bss section variables.
Date: Thu, 14 Feb 2019 04:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89347
Maninder Singh <maninder1.s at samsung dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |maninder1.s at samsung dot com
--- Comment #1 from Maninder Singh <maninder1.s at samsung dot com> ---
Fixing [#89347] gc-sections doesn't remove unused bss section variables.
gc-section works well only for bss section if global variables initialised
with 0 explicitly and not with uninitalised one.
Reason is -fdata-sections does not make separate section for bss symbols
which are not initialised with 0 explicitly.
due to which gc-section does not remove bss symbols which are not
getting used in binary.
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
---
gcc/varasm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 0be44f1..1f68c3a 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -1164,7 +1164,7 @@ get_variable_section (tree decl, bool prefer_noswitch_p)
&& ADDR_SPACE_GENERIC_P (as));
if (DECL_THREAD_LOCAL_P (decl))
return tls_comm_section;
- else if (TREE_PUBLIC (decl) && bss_initializer_p (decl))
+ else if (TREE_PUBLIC (decl) && bss_initializer_p (decl) &&
!flag_data_sections)
return comm_section;
}
--
1.9.1
>From gcc-bugs-return-633714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 05:18:41 2019
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Subject: [Bug other/89347] gc-sections doesn't remove unused bss section variables.
Date: Thu, 14 Feb 2019 05:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89347
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c |other
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You need -fno-common instead:
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Code-Gen-Options.html#index-fno-common
-fno-common
In C code, this option controls the placement of global variables defined
without an initializer, known as tentative definitions in the C standard.
Tentative definitions are distinct from declarations of a variable with the
extern keyword, which do not allocate storage.
Unix C compilers have traditionally allocated storage for uninitialized global
variables in a common block. This allows the linker to resolve all tentative
definitions of the same variable in different compilation units to the same
object, or to a non-tentative definition. This is the behavior specified by
-fcommon, and is the default for GCC on most targets. On the other hand, this
behavior is not required by ISO C, and on some targets may carry a speed or
code size penalty on variable references.
The -fno-common option specifies that the compiler should instead place
uninitialized global variables in the data section of the object file. This
inhibits the merging of tentative definitions by the linker so you get a
multiple-definition error if the same variable is defined in more than one
compilation unit. Compiling with -fno-common is useful on targets for which it
provides better performance, or if you wish to verify that the program will
work on other systems that always treat uninitialized variable definitions this
way.
>From gcc-bugs-return-633715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 05:47:59 2019
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Thu, 14 Feb 2019 05:47:00 -0000
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--- Comment #6 from Ian Lance Taylor <ian at airs dot com> ---
Thanks very much for reducing the test case.
I sent out the fix for review at https://golang.org/cl/162618. It should be
committed shortly.
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Subject: [Bug middle-end/89284] gcc -fsanitize=undefined inhibits -Wuninitialized
Date: Thu, 14 Feb 2019 07:31:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 07:31:14 2019
New Revision: 268862
URL: https://gcc.gnu.org/viewcvs?rev=268862&root=gcc&view=rev
Log:
PR middle-end/89284
* passes.def: Swap pass_ubsan and pass_early_warn_uninitialized.
* gcc.dg/ubsan/pr89284.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/ubsan/pr89284.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/passes.def
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 07:39:30 2019
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Subject: [Bug middle-end/89246] LTO produces references to cloned symbols which the compiler failed to clone
Date: Thu, 14 Feb 2019 07:39:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 07:38:52 2019
New Revision: 268863
URL: https://gcc.gnu.org/viewcvs?rev=268863&root=gcc&view=rev
Log:
Backported from mainline
2019-02-09 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89246
* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
If !node->definition and TYPE_ARG_TYPES is non-NULL, use
TYPE_ARG_TYPES instead of DECL_ARGUMENTS.
* gcc.dg/gomp/pr89246-1.c: New test.
* gcc.dg/gomp/pr89246-2.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr89246-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr89246-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-633718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 07:40:23 2019
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Subject: [Bug target/89290] [8 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Thu, 14 Feb 2019 07:40:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 07:39:46 2019
New Revision: 268864
URL: https://gcc.gnu.org/viewcvs?rev=268864&root=gcc&view=rev
Log:
Backported from mainline
2019-02-13 Jakub Jelinek <jakub@redhat.com>
PR target/89290
* config/i386/predicates.md (x86_64_immediate_operand): Allow
TLS UNSPECs offsetted by signed 32-bit CONST_INT even with
-mcmodel=large.
* gcc.target/i386/pr89290.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr89290.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/predicates.md
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89281] [9 Regression] gcc/optabs.c:3901:30: runtime error: shift exponent 32 is too large for 32-bit type 'int'
Date: Thu, 14 Feb 2019 07:41:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 07:40:33 2019
New Revision: 268865
URL: https://gcc.gnu.org/viewcvs?rev=268865&root=gcc&view=rev
Log:
Backported from mainline
2019-02-13 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89281
* optabs.c (prepare_cmp_insn): Use UINTVAL (size) instead of
INTVAL (size), compare it to GET_MODE_MASK instead of
1 << GET_MODE_BITSIZE.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/optabs.c
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Subject: [Bug target/89290] [8 Regression] ICE in change_address_1, at emit-rtl.c:2286
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89290
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/89303] [7/8 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Thu, 14 Feb 2019 07:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 07:41:51 2019
New Revision: 268866
URL: https://gcc.gnu.org/viewcvs?rev=268866&root=gcc&view=rev
Log:
Backported from mainline
2019-02-13 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89303
* tree-ssa-structalias.c (set_uids_in_ptset): Or in vi->is_heap_var
into pt->vars_contains_escaped_heap instead of setting
pt->vars_contains_escaped_heap to it.
2019-02-13 Jonathan Wakely <jwakely@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR middle-end/89303
* g++.dg/torture/pr89303.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr89303.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-structalias.c
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Subject: [Bug middle-end/89303] [7 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Thu, 14 Feb 2019 07:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.3 |7.5
Summary|[7/8 Regression] memory |[7 Regression] memory leak
|leak with shared_ptr and |with shared_ptr and
|enable_shared_from_this |enable_shared_from_this
--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ as well.
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Subject: [Bug c/89340] ICE in function_and_variable_visibility, at ipa-visibility.c:707
Date: Thu, 14 Feb 2019 08:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89340
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-14
CC| |jsm28 at gcc dot gnu.org,
| |marxin at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, FE should reject that similarly to:
$ of ‘bar’ was here
void bar () { }
^~~
marxin@marxinbox:~/Programming/testcases> cat pr89340.c
__attribute__((weak))
void bar () { }
bar();
$ gcc pr89340.c
pr89340.c:3:1: warning: data definition has no type or storage class
bar();
^~~
pr89340.c:3:1: warning: type defaults to ‘int’ in declaration of ‘bar’
[-Wimplicit-int]
pr89340.c:3:1: error: conflicting types for ‘bar’
pr89340.c:2:6: note: previous definition of ‘bar’ was here
void bar () { }
^~~
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Subject: [Bug c/89341] ICE in get, at cgraph.h:1332
Date: Thu, 14 Feb 2019 08:42:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-14
CC| |jsm28 at gcc dot gnu.org,
| |marxin at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
It's invalid code as definition can't be an alias at the same time.
Clang provides nice diagnostics here:
$ clang pr89341.c
pr89341.c:1:16: error: definition 'foo' cannot also be an alias
__attribute__((weakref("bar")))
^
1 error generated.
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Subject: [Bug tree-optimization/89314] [7/8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
Date: Thu, 14 Feb 2019 09:25:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 09:25:01 2019
New Revision: 268868
URL: https://gcc.gnu.org/viewcvs?rev=268868&root=gcc&view=rev
Log:
PR tree-optimization/89314
* fold-const.c (fold_binary_loc): Cast strlen argument to
const char * before dereferencing it. Formatting fixes.
* gcc.dg/pr89314.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89314.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/83698] bogus offset in -Wrestrict messages for strcat of unknown strings
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #0)
Hey, Markus is back!
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Subject: [Bug middle-end/89303] [7 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Thu, 14 Feb 2019 09:40:00 -0000
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--- Comment #28 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Feb 14 09:40:02 2019
New Revision: 268869
URL: https://gcc.gnu.org/viewcvs?rev=268869&root=gcc&view=rev
Log:
PR middle-end/89303 add testcase for std::enable_shared_from_this
* testsuite/20_util/enable_shared_from_this/89303.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/20_util/enable_shared_from_this/89303.cc
Modified:
trunk/libstdc++-v3/ChangeLog
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45554|0 |1
is obsolete| |
--- Comment #7 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45711
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45711&action=edit
Patch to allow blank item in format
Add documentation changes.
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89103] Allow blank format items in format strings
Date: Thu, 14 Feb 2019 09:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89103
MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45604|0 |1
is obsolete| |
--- Comment #8 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45712
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45712&action=edit
Change log for gcc/fortran for patch
Add changes to documentation.
>From gcc-bugs-return-633730-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 09:47:22 2019
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89103] Allow blank format items in format strings
Date: Thu, 14 Feb 2019 09:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89103
MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45556|0 |1
is obsolete| |
--- Comment #9 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45713
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45713&action=edit
Change Log for gcc/testsuite for patch
Replace -fdec-blank-format-item with PR fortran/89103.
>From gcc-bugs-return-633731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 09:50:49 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89263] Simplify bool expression to OR
Date: Thu, 14 Feb 2019 09:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89263
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
A job for phiopt.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89270] [9 regression] AVR ICE: verify_gimple failed
Date: Thu, 14 Feb 2019 09:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not sure, but possibly not returning false here:
static bool
verify_gimple_assign_unary (gassign *stmt)
{
..
/* Allow conversions from pointer type to integral type only if
there is no sign or zero extension involved.
For targets were the precision of ptrofftype doesn't match that
of pointers we need to allow arbitrary conversions to ptrofftype.
*/
if ((POINTER_TYPE_P (lhs_type)
&& INTEGRAL_TYPE_P (rhs1_type))
|| (POINTER_TYPE_P (rhs1_type)
&& INTEGRAL_TYPE_P (lhs_type)
&& (TYPE_PRECISION (rhs1_type) >= TYPE_PRECISION (lhs_type)
|| ptrofftype_p (lhs_type))))
return false;
elsewhere I suggested that instead of special-casing ptrofftype_p we need
this special case only if POINTERS_EXTEND_UNSIGNED is defined and for
Pmode and word_mode lhs_type mode.
Not sure how named address-spaces are handled here since
POINTERS_EXTEND_UNSIGNED
doesn't talk about them.
>From gcc-bugs-return-633733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 10:05:11 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89314] [7/8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
Date: Thu, 14 Feb 2019 10:05:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 10:04:35 2019
New Revision: 268870
URL: https://gcc.gnu.org/viewcvs?rev=268870&root=gcc&view=rev
Log:
PR tree-optimization/89314
* fold-const.c (fold_binary_loc): Cast strlen argument to
const char * before dereferencing it. Formatting fixes.
* gcc.dg/pr89314.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr89314.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/fold-const.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/89314] [7 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
Date: Thu, 14 Feb 2019 10:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.2.1, 9.0
Summary|[7/8/9 Regression] ICE in |[7 Regression] ICE in
|wide_int_to_tree_1, at |wide_int_to_tree_1, at
|tree.c:1561 |tree.c:1561
Known to fail|9.0 |
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ so far.
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89348] New: Fortran Command Options documentation fixes
Date: Thu, 14 Feb 2019 10:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89348
Bug ID: 89348
Summary: Fortran Command Options documentation fixes
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45714
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45714&action=edit
Fortran options documentation fixes
Enabling of -fdec-include is missing from list of options enabled by -fdec.
When rendered as a PDF some lines are too long in the list of options
controlling Fortran dialect and in the list of options to request or suppress
errors and warnings.
A patch is attached.
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Subject: [Bug fortran/89348] Fortran Command Options documentation fixes
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--- Comment #1 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45715
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45715&action=edit
Change log for gcc/fortran for patch
Date has been omitted from change log. Can be added when committed.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89349] New: raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89349
Bug ID: 89349
Summary: raised STORAGE_ERROR : stack overflow or erroneous
memory access when building GCC 8 branch with GCC
master
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Using latest GCC trunk as stage1 compiler and doing:
$ ../configure --enable-languages=c,c++,ada --disable-multilib
--prefix=/home/marxin/bin/gcc2 --disable-bootstrap --disable-libsanitizer
$ make
...
one can see:
make[7]: Entering directory '/home/marxin/Programming/gcc2/objdir/gcc/ada/rts'
/home/marxin/Programming/gcc2/objdir/./gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/./gcc/
-B/home/marxin/bin/gcc2/x86_64-pc-linux-gnu/bin/
-B/home/marxin/bin/gcc2/x86_64-pc-linux-gnu/lib/ -isystem
/home/marxin/bin/gcc2/x86_64-pc-linux-gnu/include -isystem
/home/marxin/bin/gcc2/x86_64-pc-linux-gnu/sys-include -c -g -O2 -fpic -W
-Wall -gnatpg -nostdinc a-assert.adb -o a-assert.o
raised STORAGE_ERROR : stack overflow or erroneous memory access
>From gcc-bugs-return-633738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 10:32:15 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
Date: Thu, 14 Feb 2019 10:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89349
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
I forgot to mention that the make is done on gcc-8 branch.
>From gcc-bugs-return-633739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 10:34:10 2019
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Subject: [Bug go/89277] [9 Regression] libgo memory hogs in libgo testsuite (at least on s390x-linux-gnu)
Date: Thu, 14 Feb 2019 10:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89277
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-633740-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 10:40:21 2019
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Thu, 14 Feb 2019 10:40:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is certainly latent, thus no regression. Usual way-outs are to throw
rewrite_to_non_trapping_overflow onto the expr before gimplification. I will
handle this if nobody beats me to it.
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Subject: [Bug middle-end/89284] gcc -fsanitize=undefined inhibits -Wuninitialized
Date: Thu, 14 Feb 2019 11:01:00 -0000
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--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
Fantastic! Thank you.
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Subject: [Bug middle-end/89284] gcc -fsanitize=undefined inhibits -Wuninitialized
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for GCC9+.
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
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Bug 24639 depends on bug 89284, which changed state.
Bug 89284 Summary: gcc -fsanitize=undefined inhibits -Wuninitialized
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89284
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89350] New: [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Thu, 14 Feb 2019 11:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89350
Bug ID: 89350
Summary: [9 Regression] Wrong -Wstringop-overflow= warning
since r261518
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
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I see following wrong warning:
$ cat snippet.c
char buf[128];
char *src = "HCSparta";
int main(int argc, char **argv)
{
char *dst = buf + sizeof(buf);
if (argc)
{
dst -= argc;
__builtin_memcpy(dst, src, argc + 0);
}
}
$ gcc snippet.c -O2 -Wstringop-overflow=2 -fno-common -g
snippet.c: In function ‘main’:
snippet.c:11:7: warning: ‘__builtin_memcpy’ writing 1 or more bytes into a
region of size 0 overflows the destination [-Wstringop-overflow=]
11 | __builtin_memcpy(dst, src, argc + 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$ gcc snippet.c -O2 -Wstringop-overflow=2 -fno-common -g -fsanitize=address
&& ./a.out
[OK]
While doing s/0/1:
$ cat snippet.c
char buf[128];
char *src = "HCSparta";
int main(int argc, char **argv)
{
char *dst = buf + sizeof(buf);
if (argc)
{
dst -= argc;
__builtin_memcpy(dst, src, argc + 1);
}
}
$ gcc snippet.c -O2 -Wstringop-overflow=2 -fno-common -g
[OK]
But:
$ gcc snippet.c -O2 -Wstringop-overflow=2 -fno-common -g -fsanitize=address
&& ./a.out
=================================================================
==6195==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000404220 at pc 0x7ffff763a5d0 bp 0x7fffffffdb70 sp 0x7fffffffd320
WRITE of size 2 at 0x000000404220 thread T0
#0 0x7ffff763a5cf in __interceptor_memcpy
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:790
#1 0x4010b4 in main /tmp/snippet.c:11
#2 0x7ffff73b4b7a in __libc_start_main ../csu/libc-start.c:308
#3 0x401119 in _start (/tmp/a.out+0x401119)
0x000000404220 is located 0 bytes to the right of global variable 'buf' defined
in 'snippet.c:1:6' (0x4041a0) of size 128
SUMMARY: AddressSanitizer: global-buffer-overflow
/home/marxin/Programming/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:790
in __interceptor_memcpy
...
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Thu, 14 Feb 2019 11:19:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-14
CC| |msebor at gcc dot gnu.org
Known to work| |8.2.0
Target Milestone|--- |9.0
Ever confirmed|0 |1
Known to fail| |9.0
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Thu, 14 Feb 2019 11:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89278
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45716
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45716&action=edit
gcc9-pr89278.patch
Well, if you want to be beaten in that, here is a patch. I've changed only the
spots I have testsuite coverage for though.
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Subject: [Bug lto/88858] ICE in rtl_verify_fallthru, at cfgrtl.c:2930 in Firefox build with LTO and PGO
Date: Thu, 14 Feb 2019 11:25:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Feb 14 11:25:18 2019
New Revision: 268872
URL: https://gcc.gnu.org/viewcvs?rev=268872&root=gcc&view=rev
Log:
Backport r268835
2019-02-14 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-13 Martin Liska <mliska@suse.cz>
PR lto/88858
* cfgrtl.c (remove_barriers_from_footer): New function.
(try_redirect_by_replacing_jump): Use it.
(cfg_layout_redirect_edge_and_branch): Likewise.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/cfgrtl.c
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
Date: Thu, 14 Feb 2019 11:25:00 -0000
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--- Comment #16 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Feb 14 11:24:45 2019
New Revision: 268871
URL: https://gcc.gnu.org/viewcvs?rev=268871&root=gcc&view=rev
Log:
Backport r268762
2019-02-14 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* ipa-cp.c (build_toporder_info): Remove usage of a param.
* ipa-inline.c (inline_small_functions): Likewise.
* ipa-pure-const.c (propagate_pure_const): Likewise.
(propagate_nothrow): Likewise.
* ipa-reference.c (propagate): Likewise.
* ipa-utils.c (struct searchc_env): Remove unused field.
(searchc): Always search across AVAIL_INTERPOSABLE.
(ipa_reduced_postorder): Always allow AVAIL_INTERPOSABLE as
the only called IPA pure const can properly not propagate
across interposable boundary.
* ipa-utils.h (ipa_reduced_postorder): Remove param.
2019-02-14 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* g++.dg/ipa/pr89009.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/ipa/pr89009.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/ipa-cp.c
branches/gcc-8-branch/gcc/ipa-inline.c
branches/gcc-8-branch/gcc/ipa-pure-const.c
branches/gcc-8-branch/gcc/ipa-reference.c
branches/gcc-8-branch/gcc/ipa-utils.c
branches/gcc-8-branch/gcc/ipa-utils.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89242] [7/8/9 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Thu, 14 Feb 2019 11:31:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Feb 14 11:30:58 2019
New Revision: 268873
URL: https://gcc.gnu.org/viewcvs?rev=268873&root=gcc&view=rev
Log:
Call free_dominance_info when transformed in DCE (PR rtl-optimization/89242).
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* dce.c (delete_unmarked_insns): Call free_dominance_info we
process a transformation.
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* g++.dg/pr89242.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/pr89242.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dce.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89242] [7/8 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Thu, 14 Feb 2019 11:34:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|verify_dominators, at |verify_dominators, at
|dominance.c:1184 (error: |dominance.c:1184 (error:
|dominator of 7 should be 5, |dominator of 7 should be 5,
|not 2) |not 2)
Known to fail|9.0 |
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 14 Feb 2019 11:45:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89283 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 11:45:03 2019
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Subject: [Bug tree-optimization/89283] [8/9 Regression] ICE: Segmentation fault (in stmt_could_throw_1_p)
Date: Thu, 14 Feb 2019 11:45:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think this is just a dup, we want to cover both testcases in the other PR,
but the bug is the same, for the returns_twice calls/__builtin_setjmp_receiver,
we need to be able to consider them as unreachable if they aren't reachable
through non-EDGE_ABNORMAL edges from the abnormal dispatcher.
*** This bug has been marked as a duplicate of bug 89280 ***
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Subject: [Bug middle-end/89303] [7 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Thu, 14 Feb 2019 11:54:00 -0000
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--- Comment #29 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Feb 14 11:53:57 2019
New Revision: 268874
URL: https://gcc.gnu.org/viewcvs?rev=268874&root=gcc&view=rev
Log:
PR middle-end/89303 add testcase for std::enable_shared_from_this
* testsuite/20_util/enable_shared_from_this/89303.cc: New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/20_util/enable_shared_from_this/89303.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
>From gcc-bugs-return-633754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:13:11 2019
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Thu, 14 Feb 2019 12:13:00 -0000
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 14 Feb 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89278
>
> --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Created attachment 45716
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45716&action=edit
> gcc9-pr89278.patch
>
> Well, if you want to be beaten in that, here is a patch. I've changed only the
> spots I have testsuite coverage for though.
Works for me.
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Subject: [Bug c/89342] ICE in maybe_default_option, at opts.c:347
Date: Thu, 14 Feb 2019 12:15:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug other/89342] ICE in maybe_default_option, at opts.c:347
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89342
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45717
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45717&action=edit
gcc9-pr89342.patch
Untested fix.
>From gcc-bugs-return-633757-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:28:45 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 14 Feb 2019 12:28:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that r8 () is a source of abnormal edges which makes the abnormal
dispatcher reachable. I think the testcase becomes clearer when one uses
setjmp instead of vfork since I'm not sure why we have full abnormal handling
for vfork at all.
It might work if we build the CFG first w/o any abnormal edges, then prune
unreachable blocks, and only after that do abnormal edge creation.
Also we could then build dominators on the CFG w/o abnormal edges and use
simple reachability analysis on that to determine if we need to add
outgoing abnormal edges to calls or not (like in this case the one out
of r8() is not needed).
OTOH with non-local goto the reachability analysis w/o abnormals would be
flawed...
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Thu, 14 Feb 2019 12:33:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45718
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45718&action=edit
Tentative patch
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Thu, 14 Feb 2019 12:33:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45719
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45719&action=edit
libxul.so WPA (--enable-checking=release) before patch
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Thu, 14 Feb 2019 12:34:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45720
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libxul.so WPA (--enable-checking=release) after patch
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 14 Feb 2019 12:34:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that it might be still reachable through both normal and
abnormal edges during cfg and might become unreachable only later (e.g.
inlining or whatever other opt), so we need something that will be able to cope
with it at any time. Even if we improve decisions from which bbs to add edges
to the ABNORMAL_DISPATCHER, as we use one dispatcher for the whole function and
can mix non-local gotos etc. with returns_twice functions, I think we can't
avoid this problem, r8 e.g. could have a non-local goto to some other bb and so
would have EDGE_ABNORMAL edge to the dispatcher.
>From gcc-bugs-return-633763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:36:45 2019
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Thu, 14 Feb 2019 12:36:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |WAITING
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
So considering only fns with more that 0.05% I see before:
0.83% lto1-wpa lto1 [.]
hash_table<hash_map<int_hash<int, 0, -1>, ipa_fn_summary*,
simple_hashmap_traits<default_hash_traits<int_hash<int, 0, -1> >,
ipa_fn_summary*> >::hash_entry, xcallocator>::find_with_hash
0.37% lto1-wpa lto1 [.]
hash_table<hash_map<int_hash<int, 0, -1>, ipa_call_summary*,
simple_hashmap_traits<default_hash_traits<int_hash<int, 0, -1> >,
ipa_call_summary*> >::hash_entry, xcallocator>::find_slot_with_hash
0.36% lto1-wpa lto1 [.]
hash_table<hash_map<int_hash<int, 0, -1>, ipa_call_summary*,
simple_hashmap_traits<default_hash_traits<int_hash<int, 0, -1> >,
ipa_call_summary*> >::hash_entry, xcallocator>::find_with_hash
After the patch:
0.49% lto1-wpa lto1 [.]
fast_call_summary<ipa_call_summary*, va_heap>::get_create
So there's an improvement, but it's quite small.
Can you Honza re-measure that for me please?
>From gcc-bugs-return-633764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:37:57 2019
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Thu, 14 Feb 2019 12:37:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Having all *.o files in RAM, I see time change for WPA from 93.0 to 90.0s.
So relatively small improvement.
>From gcc-bugs-return-633765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:46:03 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #2)
> Created attachment 45703 [details]
> patch for tls counters (incomplete - no runtime bits)
Isn't the patch only a refactoring that is eliminating tls_model from
tree_decl_with_vis and moving that into cgraph_node?
>From gcc-bugs-return-633766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 12:55:04 2019
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Subject: [Bug d/87864] libdruntime doesn't link with /bin/ld before Solaris 11.4
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
URL|https://gcc.gnu.org/ml/gcc- |https://gcc.gnu.org/ml/gcc-
|patches/2019-01/msg01666.ht |patches/2019-02/msg01019.ht
|ml |ml
Last reconfirmed| |2019-02-14
Assignee|ibuclaw at gdcproject dot org |ro at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #9 from Rainer Orth <ro at gcc dot gnu.org> ---
Mine, slightly revised patch posted.
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Subject: [Bug c/89340] ICE in function_and_variable_visibility, at ipa-visibility.c:707
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It should be actually rejected like:
__attribute__((weak)) static void foo () {}
void bar (void) { foo (); }
pr89340.c:1:35: error: weak declaration of ‘foo’ must be public
1 | __attribute__((weak)) static void foo () {}
| ^~~
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Subject: [Bug c/89340] [7/8/9 Regression] ICE in function_and_variable_visibility, at ipa-visibility.c:707
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in |[7/8/9 Regression] ICE in
|function_and_variable_visib |function_and_variable_visib
|ility, at |ility, at
|ipa-visibility.c:707 |ipa-visibility.c:707
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
gcc 4.4 still accepted this, I think the ICE started with r154115. As we do
reject static __attribute__((weak)) functions, I think we should reject this
too.
>From gcc-bugs-return-633769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:18:51 2019
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Subject: [Bug c/89340] [7/8/9 Regression] ICE in function_and_variable_visibility, at ipa-visibility.c:707
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45721
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45721&action=edit
gcc9-pr89340.patch
Untested fix.
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Thu, 14 Feb 2019 13:19:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm just looking at the google/gcc-4.9 branch:
https://android.googlesource.com/toolchain/gcc/+/master/gcc-4.9/
and they have a sampling approach:
/* Transform:
ORIGINAL CODE
Into:
__gcov_sample_counter++;
if (__gcov_sample_counter >= __gcov_sampling_period)
{
__gcov_sample_counter = 0;
ORIGINAL CODE
}
which effectively updates edge counters just for a limited time. I would expect
size increase:
Removing basic block 9
Removing basic block 10
main (int argc)
{
unsigned int PROF_sample.2;
unsigned int PROF_sample.1;
long int PROF_edge_counter_6;
long int PROF_edge_counter_7;
long int PROF_edge_counter_8;
long int PROF_edge_counter_9;
<bb 2>:
__gcov_indirect_call_profiler_v2 (1005944783, main);
__gcov_indirect_call_callee = 0B;
if (argc_2(D) != 0)
goto <bb 3>;
else
goto <bb 6>;
<bb 3>:
a = 123;
PROF_sample.2_13 = __gcov_sample_counter;
PROF_sample.2_14 = PROF_sample.2_13 + 1;
__gcov_sample_counter = PROF_sample.2_14;
PROF_sample.2_15 = __gcov_sampling_period;
if (PROF_sample.2_14 >= PROF_sample.2_15)
goto <bb 5>;
else
goto <bb 4>;
<bb 4>:
goto <bb 8>;
<bb 5>:
__gcov_sample_counter = 0;
PROF_edge_counter_6 = __gcov0.main[0];
PROF_edge_counter_7 = PROF_edge_counter_6 + 1;
__gcov0.main[0] = PROF_edge_counter_7;
goto <bb 8>;
<bb 6>:
a = 0;
PROF_sample.1_10 = __gcov_sample_counter;
PROF_sample.1_11 = PROF_sample.1_10 + 1;
__gcov_sample_counter = PROF_sample.1_11;
PROF_sample.1_12 = __gcov_sampling_period;
if (PROF_sample.1_11 >= PROF_sample.1_12)
goto <bb 7>;
else
goto <bb 4>;
<bb 7>:
__gcov_sample_counter = 0;
PROF_edge_counter_8 = __gcov0.main[1];
PROF_edge_counter_9 = PROF_edge_counter_8 + 1;
__gcov0.main[1] = PROF_edge_counter_9;
<bb 8>:
return 0;
}
>From gcc-bugs-return-633771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:22:31 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Thu, 14 Feb 2019 13:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89307
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
>
> which effectively updates edge counters just for a limited time. I would
> expect
Ah now, it's really doing sampling. I guess it can lead to quite some profile
inconsistencies..
>From gcc-bugs-return-633772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:29:32 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Thu, 14 Feb 2019 13:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89341
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in get, at |[7/8/9 Regression] ICE in
|cgraph.h:1332 |get, at cgraph.h:1332
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This used to be accepted before r154115 (so e.g. in GCC 4.2), then it started
to ICE:
pr89341.c:3:1: internal compiler error: in function_and_variable_visibility, at
ipa.c:662
then (likely) r169332 started rejecting this:
pr89341.c:2:13: warning: ‘weakref’ attribute ignored because function is
defined [-Wattributes]
pr89341.c:2:13: error: ‘foo’ aliased to undefined symbol ‘bar’
then r174952 started to ICE on this again.
>From gcc-bugs-return-633773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:34:20 2019
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Subject: [Bug middle-end/89351] New: internal compiler error: in exact_div, at poly-int.h:2139
Date: Thu, 14 Feb 2019 13:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89351
Bug ID: 89351
Summary: internal compiler error: in exact_div, at
poly-int.h:2139
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: gsocshubham at gmail dot com
Target Milestone: ---
Host: x86_64-linux-gnu
Target: x86_64-linux-gnu
Build: x86_64-linux-gnu
Created attachment 45722
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45722&action=edit
Preprocessed code of file named "sam.c" which caused internal compiler error
-----------------------COMMAND USED FOR COMPILATION---------------------------
~/gcc-9-trunk/build/gcc/xgcc -B ~/gcc-9-trunk/build/gcc/ sam.c -fgnu-tm -w
-Icsmith-crash-test/csmith/runtime/
during RTL pass: expand
sam.c: In function ‘func_33’:
sam.c:857:139: internal compiler error: in exact_div, at poly-int.h:2139
857 | != l_130) , ((g_133[0][1] , l_134) != (p_36 != (void*)0))) > g_100.f3))
& ((void*)0 == l_135)) || 0xAC466B2A51B1567ELL) > g_56.f0);
| ~~~~~^~~
0x92f6f8 poly_int<1u, poly_result<long, if_nonpoly<int, int,
poly_int_traits<int>::is_poly>::type, poly_coeff_pair_traits<long,
if_nonpoly<int, int, poly_int_traits<int>::is_poly>::type>::result_kind>::type>
exact_div<1u, long, int>(poly_int_pod<1u, long> const&, int)
../../gcc/gcc/poly-int.h:2139
0x92f6f8 expand_expr_addr_expr_1
../../gcc/gcc/expr.c:8041
0x9220ed expand_expr_addr_expr
../../gcc/gcc/expr.c:8082
0x9220ed expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:11237
0x7dfb37 expand_normal
../../gcc/gcc/expr.h:285
0x7dfb37 precompute_register_parameters
../../gcc/gcc/calls.c:967
0x7dfb37 expand_call(tree_node*, rtx_def*, int)
../../gcc/gcc/calls.c:3998
0x7ccc0d expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc/gcc/builtins.c:8337
0x921918 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:11005
0x92fb14 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc/gcc/expr.c:5649
0x93194e expand_assignment(tree_node*, tree_node*, bool)
../../gcc/gcc/expr.c:5432
0x7f4076 expand_call_stmt
../../gcc/gcc/cfgexpand.c:2722
0x7f4076 expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3691
0x7f4076 expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3850
0x7f6ef5 expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5886
0x7fd1e6 execute
../../gcc/gcc/cfgexpand.c:6509
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
-----------------------REDUCED TEST CASE-------------------------------------
struct {
signed : 5;
unsigned b : 7
} c[][1];
a() {}
d() {
__transaction_relaxed { a(c[0][1].b); }
}
----------------------COMPILER BUILD OPTIONS---------------------------------
Using built-in specs.
COLLECT_GCC=build/gcc/xgcc
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --enable-languages=c,c++ --enable-lto
--disable-bootstrap : (reconfigured) ../gcc/configure --enable-languages=c,c++
--enable-lto --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190214 (experimental) (GCC)
>From gcc-bugs-return-633774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:36:37 2019
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Subject: [Bug fortran/89352] New: Deferred length character array pointer error with gfortran
Date: Thu, 14 Feb 2019 13:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89352
Bug ID: 89352
Summary: Deferred length character array pointer error with
gfortran
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
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Target Milestone: ---
I have two deferred length character arrays in gfortran. I allocate one of
them, and then point the other one to it. The pointer variable has the correct
array size, but not the correct character length. The program terminates with
an error when trying to access the information in the pointer.
I see that there may be related bugs that have been fixed
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51976), but this one is present
now in version 8.
I'm testing this with:
GNU Fortran (MacPorts gcc8 8.2.0_2) 8.2.0
and also
GNU Fortran (MacPorts gcc8 8.2.0_3) 8.2.0
The code below works fine with Intel Fortran on Windows.
program test
implicit none
character(len=:), pointer, dimension(:) :: charvara
character(len=:), pointer, dimension(:) :: charvara_ptr
allocate(character(len=10) :: charvara(3))
charvara(:) = '0123456789'
print *, 'len(charvara) = ', len(charvara)
print *, 'size(charvara) = ', size(charvara)
print *, 'charvara = ', charvara
charvara_ptr => charvara
print *, 'associated = ', associated(charvara_ptr, charvara)
print *, 'len(charvara_ptr) = ', len(charvara_ptr)
print *, 'size(charvara_ptr) = ', size(charvara_ptr)
print *, 'charvara_ptr = ', charvara_ptr
print *, 'end'
end program test
I would expect the length, size, and contents of charvara_ptr to be the same as
charvara, but instead I get the following:
len(charvara) = 10
size(charvara) = 3
charvara = 012345678901234567890123456789
associated = T
len(charvara_ptr) = 1708412736
size(charvara_ptr) = 3
test(71321,0x7fff9e47c380) malloc: *** mach_vm_map(size=140734901800960)
failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
Operating system error: Cannot allocate memory
Memory allocation failure in xrealloc
Error termination. Backtrace:
#0 0x10bb11f8f
#1 0x10bb127fd
#2 0x10bb12987
#3 0x10bb119f9
#4 0x10bbc8950
#5 0x10bbbf147
#6 0x10bbc4b61
#7 0x10bbc7cd8
#8 0x10bbc877e
#9 0x10bb0ccab
#10 0x10bb0cd6e
>From gcc-bugs-return-633776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:37:56 2019
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Subject: [Bug target/89353] New: Unnecessary ENDBR with -mmanual-endbr
Date: Thu, 14 Feb 2019 13:37:00 -0000
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Bug ID: 89353
Summary: Unnecessary ENDBR with -mmanual-endbr
Product: gcc
Version: 9.0
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Priority: P3
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[hjl@gnu-mic-2 gcc]$ cat x.c
#ifdef FOO
__attribute__ ((cf_check))
#endif
int test(int* val)
{
int status = 99;
if((val == 0))
{
status = 22;
goto end;
}
extern int x;
*val = x;
status = 0;
end:
return status;
}
[hjl@gnu-mic-2 gcc]$ ./xgcc -B./ -m32 -O2 -fcf-protection x.c -S -mmanual-endbr
[hjl@gnu-mic-2 gcc]$ cat x.s
.file "x.c"
.text
.p2align 4
.globl test
.type test, @function
test:
.LFB0:
.cfi_startproc
movl 4(%esp), %eax
testl %eax, %eax
je .L3
movl x, %edx
movl %edx, (%eax)
xorl %eax, %eax
ret
.p2align 4,,10
.p2align 3
.L3:
.L2:
endbr32 <<<<<<<< This should be there.
movl $22, %eax
ret
.cfi_endproc
.LFE0:
.size test, .-test
.ident "GCC: (GNU) 9.0.1 20190214 (experimental)"
.section .note.GNU-stack,"",@progbits
.section .note.gnu.property,"a"
.align 4
.long 1f - 0f
.long 4f - 1f
.long 5
0:
.string "GNU"
1:
.align 4
.long 0xc0000002
.long 3f - 2f
2:
.long 0x3
3:
.align 4
4:
[hjl@gnu-mic-2 gcc]$
>From gcc-bugs-return-633775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:37:34 2019
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88677
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Patch has been approved, are you going to commit it?
>From gcc-bugs-return-633777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:53:37 2019
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Subject: [Bug target/89353] Unnecessary ENDBR with -mmanual-endbr
Date: Thu, 14 Feb 2019 13:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89353
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> [hjl@gnu-mic-2 gcc]$ cat x.c
> .L2:
> endbr32 <<<<<<<< This should be there.
This should NOT be there.
> movl $22, %eax
>From gcc-bugs-return-633778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:58:24 2019
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Subject: [Bug middle-end/89351] internal compiler error: in exact_div, at poly-int.h:2139
Date: Thu, 14 Feb 2019 13:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |rth at gcc dot gnu.org,
| |torvald at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Cleaned up testcase with -fgnu-tm:
struct S { int a : 5; unsigned b : 7; } c[1][1];
void
foo (int x)
{
}
void
bar (void)
{
__transaction_relaxed {
foo (c[0][1].b);
}
}
Seems the TM code can't deal with bitfields properly:
_15 = __builtin__ITM_RU1 (&c[0][1].b);
taking address of a bitfield is invalid. Dunno what exactly it should do,
perhaps tak address of the DECL_BIT_FIELD_REPRESENTATIVE and read the
DECL_BIT_FIELD_REPRESENTATIVE instead and then BIT_FIELD_REF or something
similar out of this? And similarly deal somehow with the stores to bitfields
(that is actually a read modify write cycle that likely would need to be
exposed.
That said, -fgnu-tm is pretty much unmaintained for years, so maybe best would
be to remove that support (e.g. I believe it doesn't handle internal functions
at all, which appear commonly in the IL these days, doesn't handle various
builtins correctly, etc.).
>From gcc-bugs-return-633779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 13:58:29 2019
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Subject: [Bug rtl-optimization/89242] [7/8 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Thu, 14 Feb 2019 13:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89242
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Feb 14 13:57:52 2019
New Revision: 268876
URL: https://gcc.gnu.org/viewcvs?rev=268876&root=gcc&view=rev
Log:
Backport r268873
2019-02-14 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* dce.c (delete_unmarked_insns): Call free_dominance_info we
process a transformation.
2019-02-14 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* g++.dg/pr89242.C: New test.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dce.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89354] New: Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Thu, 14 Feb 2019 14:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89354
Bug ID: 89354
Summary: Combine pass yields wrong code with -O2 and -msse2 for
32bit target
Product: gcc
Version: 6.3.0
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Created attachment 45723
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45723&action=edit
Proposed patch for gcc 6.3 including a test
There is a problem with compiling this code (options -O2 -msse2 -m32):
$ gcc-6 -m32 -O2 -msse2 /src/gcc/gcc/testsuite/gcc.target/i386/sse2-extz_di.c
&& ./a.out
Aborted
#define BIT33 0x100000000ULL
#include <stdint.h>
static uint64_t const MASK33 = (1ULL << 33) - 1;
static uint64_t qword = 0;
static uint64_t
get_low33 (void)
{
return qword & MASK33;
}
static void
__attribute__((noinline))
set_bit33 (void)
{
qword = (qword & ~MASK33) | BIT33;
}
static void
main (int, char**)
{
set_bit33 ();
if (get_low33 () != BIT33))
abort ();
}
Investigation showed, that during combine pass for set_bit33 function wrong RTL
is yielded: the second operand of ior is truncated into dword, i.e. 0, and the
bit 33 is never switched on.
I have a fix attached. It does not allow narrowing while matching zero_extract
insn.
That is, before the fix the optimizer was dealing with this RTL inst (Note,
zero_extract:SI):
Trying 5, 6, 7 -> 8:
Failed to match this instruction:
(set (zero_extract:SI (mem/c:DI (plus:SI (reg:SI 87)
(const:SI (unspec:SI [
(symbol_ref:SI ("qword") [flags 0x2] <var_decl
0x7f6921b205a0 qword>)
] UNSPEC_GOTOFF))) [3 qword+0 S8 A64])
(const_int 33 [0x21])
(const_int 0 [0]))
(const_int 0 [0]))
Now zero_extract has DI mode because the inner instruction mem has larger, DI,
mode size:
Trying 5, 6, 7 -> 8:
Failed to match this instruction:
(set (zero_extract:DI (mem/c:DI (symbol_ref:SI ("qword") [flags 0x2] <var_decl
0x7f7c3083c480 qword>) [3 qword+0 S8 A64])
(const_int 33 [0x21])
(const_int 0 [0]))
(const_int 4294967296 [0x100000000]))
References:
* get_best_reg_extraction_insn is called here
https://github.com/gcc-mirror/gcc/blob/master/gcc/combine.c#L7819
* zero_extract is tried out
https://github.com/gcc-mirror/gcc/blob/master/gcc/combine.c#L7983
$ gcc-6 -v
Using built-in specs.
COLLECT_GCC=gcc-6
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18+deb9u1'
--with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --program-prefix=x86_64-linux-gnu- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
It is reproduced on all versions >= 6.3.
I didn't test on older ones.
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Subject: [Bug fortran/72715] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:3164
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code, openmp |openacc
Status|NEW |ASSIGNED
Last reconfirmed|2016-07-27 00:00:00 |2019-2-14
CC| |burnus at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |tschwinge at gcc dot gnu.org
--- Comment #5 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Thanks for the report (Gerhard), and patch (Cesar); ICE addressed in trunk
r268875, like done for OpenMP in PR60127, trunk r210331.
>From gcc-bugs-return-633782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 14:42:42 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
Date: Thu, 14 Feb 2019 14:42:00 -0000
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--- Comment #6 from Jan Hubicka <hubicka at ucw dot cz> ---
> Ah now, it's really doing sampling. I guess it can lead to quite some profile
> inconsistencies..
Yep, it is not coolest solution. I would not worry too much about
precision loss unless you get some weird interference between the
sampling counter and actual program behaviour. Adding conditionals
everywhere is not very good and I am not sure how well CPU will predict
such branches.
Honza
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Subject: [Bug target/89355] New: Unnecessary ENDBR
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Bug ID: 89355
Summary: Unnecessary ENDBR
Product: gcc
Version: 9.0
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CC: crazylht at gmail dot com, xuepeng.guo at intel dot com
Target Milestone: ---
Target: i386,x86-64
[hjl@gnu-cfl-2 gcc]$ cat x.i
int
test (int* val)
{
int status = 99;
if((val == 0))
{
status = 22;
goto end;
}
extern int x;
*val = x;
status = 0;
end:
return status;
}
[hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -S -O2 -fcf-protection x.i
[hjl@gnu-cfl-2 gcc]$ cat x.s
.file "x.i"
.text
.p2align 4
.globl test
.type test, @function
test:
.LFB0:
.cfi_startproc
endbr64
testq %rdi, %rdi
je .L3
movl x(%rip), %eax
movl %eax, (%rdi)
xorl %eax, %eax
ret
.p2align 4,,10
.p2align 3
.L3:
.L2:
endbr64 <<< Why is ENDBR here? There is no indirect branch.
movl $22, %eax
ret
.cfi_endproc
.LFE0:
.size test, .-test
.ident "GCC: (GNU) 9.0.1 20190214 (experimental)"
.section .note.GNU-stack,"",@progbits
.section .note.gnu.property,"a"
.align 8
.long 1f - 0f
.long 4f - 1f
.long 5
0:
.string "GNU"
1:
.align 8
.long 0xc0000002
.long 3f - 2f
2:
.long 0x3
3:
.align 8
4:
[hjl@gnu-cfl-2 gcc]$
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
Date: Thu, 14 Feb 2019 14:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88677
--- Comment #16 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Thu Feb 14 14:49:03 2019
New Revision: 268880
URL: https://gcc.gnu.org/viewcvs?rev=268880&root=gcc&view=rev
Log:
PR lto/88677
Fix PR number.
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug lto/88677] [9 Regression] Divergence in -O2 and -O2 -flto early opts
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #17 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Thu, 14 Feb 2019 14:54:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-14
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|Combine pass yields wrong |[7/8/9 Regression] Combine
|code with -O2 and -msse2 |pass yields wrong code with
|for 32bit target |-O2 and -msse2 for 32bit
| |target
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r228231, will have a look.
Slightly simplified testcase:
static unsigned long long q = 0;
__attribute__((noipa)) static void
bar (void)
{
q = (q & ~0x1ffffffffULL) | 0x100000000ULL;
}
int
main ()
{
__asm volatile ("" : "+m" (q));
bar ();
if (q != 0x100000000ULL)
__builtin_abort ();
return 0;
}
>From gcc-bugs-return-633787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 14:55:24 2019
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-mno-stv also cures it.
>From gcc-bugs-return-633788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 14:58:41 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89356] New: [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
Date: Thu, 14 Feb 2019 14:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89356
Bug ID: 89356
Summary: [9 Regression] sorry, unimplemented: mangling
implicit_conv_expr in nodejs8 package since r268321
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Starting from the revision I see:
$ cat sorry.ii
typedef unsigned a;
template <typename> struct h {};
template <int, class b> auto c(b f) -> h<decltype(f(a{0}))>;
typedef char byte;
enum d : byte;
d g(byte);
h<d> e = c<6>(g);
$ g++ sorry.ii -c
sorry.ii: In instantiation of ‘h<decltype (f(((unsigned int)0)))> c(b) [with
int <anonymous> = 6; b = d (*)(char)]’:
sorry.ii:3:30: sorry, unimplemented: mangling implicit_conv_expr
3 | template <int, class b> auto c(b f) -> h<decltype(f(a{0}))>;
|
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |8.2.0
Keywords| |ice-on-valid-code
Last reconfirmed| |2019-02-14
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Target Milestone|--- |9.0
Known to fail| |9.0
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Subject: [Bug c/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Thu, 14 Feb 2019 15:01:00 -0000
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
The -Wattributes warning would be emitted here in cgraphunit.c:
process_function_and_variable_attributes:
777 if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl))
778 && (node->definition && !node->alias))
779 {
780 warning_at (DECL_SOURCE_LOCATION (node->decl),
OPT_Wattributes,
781 "%<weakref%> attribute ignored"
782 " because function is defined");
783 DECL_WEAK (decl) = 0;
784 DECL_ATTRIBUTES (decl) = remove_attribute ("weakref",
785 DECL_ATTRIBUTES
(decl));
786 }
but the alias stops the clause from firing:
(gdb) p node
$3 = <cgraph_node * 0x7ffff18af2d0 "foo"/0>
(gdb) p node->definition
$4 = 1
(gdb) p node->alias
$5 = 1
The alias exclusion was added to the warning in r174952 (aka
c70f46b057cd12973d33c01c8fa0da5c14ba3944) by Honza:
@@ -880,7 +977,7 @@ process_function_and_variable_attributes (struct
cgraph_node *first,
cgraph_mark_needed_node (node);
}
if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl))
- && node->local.finalized)
+ && (node->local.finalized && !node->alias))
{
warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes,
"%<weakref%> attribute ignored"
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Amusingly, we already handle
3440 /* Strip a conversion added by convert_nontype_argument. */
3441 if (TREE_CODE (node) == IMPLICIT_CONV_EXPR)
3442 node = TREE_OPERAND (node, 0);
in write_template_arg.
>From gcc-bugs-return-633792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 15:05:00 2019
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
Date: Thu, 14 Feb 2019 15:05:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-633794-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 15:19:01 2019
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Subject: [Bug c/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Thu, 14 Feb 2019 15:19:00 -0000
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--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Both decls of "foo" are using the same FUNCTION_DECL.
node->alias is set in varasm.c: assemble_alias here:
5991 cgraph_node::get_create (decl)->alias = true;
when processing the second decl of "foo" here:
void foo ();
since the FUNCTION_DECL for "foo" has an "alias" attribute, given to it by
handle_weakref_attribute when parsing the first decl of here:
__attribute__((weakref("bar")))
static void foo () { }
>From gcc-bugs-return-633795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 15:29:23 2019
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I think it is also caused by fact that the virtual destructor has no
DECL_VIRTUAL flag.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87089
[Bug 87089] [9 regression] tree check: expected class 'type', have
'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
>From gcc-bugs-return-633796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 15:49:13 2019
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89357] New: alignas for automatic variables with alignment greater than 16 fails
Date: Thu, 14 Feb 2019 15:49:00 -0000
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Bug ID: 89357
Summary: alignas for automatic variables with alignment greater
than 16 fails
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Target: aarch64-*-*, arm-*-*
Test case (cf. https://godbolt.org/z/ubJge4):
void g(int &);
auto f0() {
__attribute__((aligned(128))) int x;
g(x);
}
auto f1() {
alignas(128) int x;
g(x);
}
In f0, x is aligned on 128 Bytes, in f1 it is aligned on 16 Bytes. GCC emits
the warning "requested alignment 128 is larger than 16 [-Wattributes]". The
warning is not helpful as it only states an obvious fact (128 > 16). In any
case, it is unclear why the alignment is rejected in the first place.
http://eel.is/c++draft/dcl.align#2.2 says "[...] the implementation does not
support that alignment in the context of the declaration, the program is
ill-formed". Thus, compiling with alignment of 16 is non-conforming. If the
alignment is unsupported this needs to be a error.
My preferred solution would be to just align x in f1 to 128 Bytes. Why should
alignas and the aligned attribute behave differently?
On x86, power, mips, and msp430 (tested on Compiler Explorer) f0 and f1 are
equivalent.
>From gcc-bugs-return-633797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 15:51:22 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
What happens without --disable-bootstrap?
>From gcc-bugs-return-633798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 16:23:28 2019
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Thu, 14 Feb 2019 16:23:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45724
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45724&action=edit
gcc9-pr89354.patch
Untested fix. I think the bug is in make_extraction, which for VOIDmode,
(mem:DI ...), 0, NULL_RTX, 33, 1, 1, 0 arguments returns strangely (for 32-bit
target) (zero_extract:SI (mem:DI ...) (const_int 33) (const_int 0)). That
looks bogus to me, because those 33 bits can't fit into SImode.
Then make_field_assignment does:
assign = make_extraction (VOIDmode, dest, pos, NULL_RTX, len, 1, 1, 0);
if (assign == 0)
return x;
machine_mode new_mode = (GET_CODE (assign) == STRICT_LOW_PART
? GET_MODE (XEXP (assign, 0)) : GET_MODE (assign));
which sets new_mode to SImode too, and
src = canon_reg_for_combine (simplify_shift_const (NULL_RTX, LSHIFTRT,
src_mode, other, pos),
dest);
src = force_to_mode (src, new_mode,
len >= HOST_BITS_PER_WIDE_INT
? HOST_WIDE_INT_M1U
: (HOST_WIDE_INT_1U << len) - 1,
0);
other is (const_int 0x100000000) and as pos is 0, the first call just returns
the same constant, but force_to_mode turns it into const0_rtx, which is where
we lose the |= 0x100000000ULL.
>From gcc-bugs-return-633799-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 16:32:31 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
Date: Thu, 14 Feb 2019 16:32:00 -0000
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--- Comment #3 from seurer at gcc dot gnu.org ---
Created attachment 45725
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45725&action=edit
Patch to disable ALSR for asan/tsan on powerpc64
>From gcc-bugs-return-633800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 16:33:32 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
Date: Thu, 14 Feb 2019 16:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89308
--- Comment #4 from seurer at gcc dot gnu.org ---
The above patch pulls in just enough of the changes from trunk to disable ASLR
for powerpc64 while leaving things alone for everyone else.
>From gcc-bugs-return-633801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 16:39:40 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ugh, does this mean if ASLR is enabled you get
"WARNING: Program is being run with address space layout "
"randomization (ASLR) enabled which prevents the thread and "
"memory sanitizers from working on powerpc64le.\n"
"ASLR will be disabled and the program re-executed.\n"
message from every -fsanitize=address/-fsanitize=thread linked program?
If so, that is extremely nasty. Couldn't that be done only if you determine
the areas you need to mmap the shadow etc. memory can't be mapped?
Of course, that applies to trunk as well as possible backport.
>From gcc-bugs-return-633802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 16:44:16 2019
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Thu, 14 Feb 2019 16:44:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jamborm at gcc dot gnu.org
--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
The indirect inlining thingy was indeed written by me, that is true,
but that was before speculative inlining was creating and disposing of
edges at difficult to predict times. What happens is that:
1. In the course of inlining an edge, we call ipa_propagate_indirect_call_infos
to adjust jump functions and to add newly discovered direct edges to
new_edges vector so that they can be added to the heap later.
2. The speculation code in try_make_edge_direct_virtual_call decides
to create speculation, so a new speculative edge is created and
added to the vector.
3. Immediately after calling ipa_propagate_indirect_call_infos,
check_speculations is called, which finds the edge
!speculation_useful_p and removes it. But the edge already is in
the vector.
Let me see if I can add the respective usefulness test to the code
deciding to speculate.
>From gcc-bugs-return-633803-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 17:16:54 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I thought that typically you can't build older gcc with newer gcc when using
ada, at least I remember seeing issues with gcc 7 built with gcc 8 too when ada
is enabled.
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Subject: [Bug target/88850] [9 Regression] Hard register coming out of expand causing reload to fail.
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--- Comment #11 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Thu Feb 14 17:17:20 2019
New Revision: 268884
URL: https://gcc.gnu.org/viewcvs?rev=268884&root=gcc&view=rev
Log:
Arm: Add HF modes to ANY iterators
The iterator ANY64 are used in various general split patterns and is supposed
to contain all 64 bit modes.
For some reason the pattern has HI but not HF. This adds HF so that general
64 bit splits are generated for these modes as well. These are required
by various split patterns that expect them to be there.
gcc/ChangeLog:
PR target/88850
* config/arm/iterators.md (ANY64): Add V4HF.
gcc/testsuite/ChangeLog:
PR target/88850
* gcc.target/arm/pr88850-2.c: New test.
* lib/target-supports.exp
(check_effective_target_arm_neon_softfp_fp16_ok_nocache,
check_effective_target_arm_neon_softfp_fp16_ok,
add_options_for_arm_neon_softfp_fp16): New.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr88850-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/iterators.md
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/target-supports.exp
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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--- Comment #6 from seurer at gcc dot gnu.org ---
I think it only comes out if you specify the verbose sanitizer option on the
compilation. If I can remember how to specify that I will try it.
>From gcc-bugs-return-633806-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 17:21:05 2019
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Still, a reexec is costly and might break some programs. If the ASLR makes
problems only sometimes, it might be better to try to map stuff it wants and if
that fails, before reporting failure try this CheckASLR.
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Thu, 14 Feb 2019 17:25:00 -0000
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--- Comment #5 from Jan Hubicka <hubicka at ucw dot cz> ---
> Let me see if I can add the respective usefulness test to the code
> deciding to speculate.
I see, it is mine, sorry for blaming you :)
One alternative would be also to put the indirect part of pseculative
edge to the vector and lookup the direct one if speculation survives.
But checking prior creation should work too.
Thanks for looking into this!
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
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Rafael Avila de Espindola <rafael at espindo dot la> changed:
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----------------------------------------------------------------------------
Attachment #45710|0 |1
is obsolete| |
--- Comment #7 from Rafael Avila de Espindola <rafael at espindo dot la> ---
Created attachment 45726
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45726&action=edit
testcase that fails on trunk
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
Date: Thu, 14 Feb 2019 17:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89308
--- Comment #8 from seurer at gcc dot gnu.org ---
This is the way it came from upstream (llvm) and the solution for powerpc64 was
copied from what aarch64 did before.
What is really needed is a workable solution from whoever does sanitizer
development that works despite the huge ranges of addresses that ASLR now uses.
>From gcc-bugs-return-633811-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 17:44:59 2019
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From: "rafael at espindo dot la" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
Date: Thu, 14 Feb 2019 17:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443
Bug 88443 depends on bug 89337, which changed state.
Bug 89337 Summary: Bogus "exceeds maximum object size" on unreachable code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|DUPLICATE |---
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Thu, 14 Feb 2019 17:44:00 -0000
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Rafael Avila de Espindola <rafael at espindo dot la> changed:
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--- Comment #8 from Rafael Avila de Espindola <rafael at espindo dot la> ---
The previous testcase passes on trunk, but the original doesn't.
The original has a "if (boost::algorithm::ends_with(name, "%2A"))" instead of a
direct "if(name.size() > 3)".
The reduced testcase uses a find to avoid boost::algorithm and keep the
testcase size sane.
In the end it seems that gcc is doing an heroic effort to understand the code
and issue an warning if it can't prove that the bogus memset is not reached. I
don't think that is workable in practice (for sure not in theory): There is
always something that is obvious to the developer but not to gcc.
IMHO gcc should be issuing warnings only when it shows that a statement can be
reached, not when it fails to show the statement cannot be reached.
>From gcc-bugs-return-633812-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 17:49:14 2019
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Subject: [Bug d/87864] libdruntime doesn't link with /bin/ld before Solaris 11.4
Date: Thu, 14 Feb 2019 17:49:00 -0000
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--- Comment #10 from Rainer Orth <ro at gcc dot gnu.org> ---
Author: ro
Date: Thu Feb 14 17:47:49 2019
New Revision: 268886
URL: https://gcc.gnu.org/viewcvs?rev=268886&root=gcc&view=rev
Log:
Provide __start_minfo/__stop_minfo for linkers that don't (PR d/87864)
libphobos:
PR d/87864
* configure.ac (DRTSTUFF_SPEC): New variable.
Substitute it.
* libdruntime/m4/druntime/os.m4 (DRUNTIME_OS_MINFO_BRACKETING):
New automake conditional.
* configure: Regenerate.
* libdruntime/gcc/drtstuff.c: New file.
* libdruntime/Makefile.am [!DRUNTIME_OS_MINFO_BRACKETING]
(DRTSTUFF, toolexeclib_DATA): New variables.
(gcc/drtbegin.lo, gcc/drtend.lo): New rules.
(libgdruntime_la_LDFLAGS): Use -Wc instead of -Xcompiler.
Add -dstartfiles -B../src -Bgcc.
(libgdruntime_la_DEPENDENCIES): New variable.
(unittest_static_LDFLAGS): Use -Wc instead of -Xcompiler.
(libgdruntime_t_la_LDFLAGS): Likewise.
(unittest_LDFLAGS): Likewise.
* src/Makefile.am (libgphobos_la_LDFLAGS): Use -Wc instead of
-Xcompiler.
Add -dstartfiles -B../libdruntime/gcc.
(unittest_static_LDFLAGS): Use -Wc instead of -Xcompiler.
(libgphobos_t_la_LDFLAGS): Likewise.
(unittest_LDFLAGS): Likewise.
* libdruntime/Makefile.in, src/Makefile.in: Regenerate.
* Makefile.in, testsuite/Makefile.in: Regenerate.
* libdruntime/rt/sections_elf_shared.d (Minfo_Bracketing): Don't
assert.
* libdruntime/gcc/config.d.in (Minfo_Bracketing): Remove.
* src/drtstuff.spec: New file.
* src/libgphobos.spec.in (DRTSTUFF_SPEC): Substitute.
(*lib): Only pass SPEC_PHOBOS_DEPS without -debuglib, -defaultlib,
-nophoboslib.
* testsuite/testsuite_flags.in <--gdcldflags> (GDCLDFLAGS): Add
-B${BUILD_DIR}/libdruntime/gcc.
gcc/d:
PR d/87864
* lang.opt (dstartfiles): New option.
* d-spec.cc (need_spec): New variable.
(lang_specific_driver) <OPT_dstartfiles>: Enable need_spec.
(lang_specific_pre_link): Also load libgphobos.spec if need_spec.
gcc/testsuite:
PR d/87864
* lib/gdc.exp (gdc_link_flags): Add path to drtbegin.o/drtend.o if
present.
Added:
trunk/libphobos/libdruntime/gcc/drtstuff.c
trunk/libphobos/src/drtstuff.spec
Modified:
trunk/gcc/d/ChangeLog
trunk/gcc/d/d-spec.cc
trunk/gcc/d/lang.opt
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/gdc.exp
trunk/libphobos/ChangeLog
trunk/libphobos/configure (contents, props changed)
trunk/libphobos/configure.ac
trunk/libphobos/libdruntime/Makefile.am
trunk/libphobos/libdruntime/Makefile.in
trunk/libphobos/libdruntime/gcc/config.d.in
trunk/libphobos/libdruntime/rt/sections_elf_shared.d
trunk/libphobos/m4/druntime/os.m4
trunk/libphobos/src/Makefile.am
trunk/libphobos/src/Makefile.in
trunk/libphobos/src/libgphobos.spec.in
trunk/libphobos/testsuite/testsuite_flags.in (contents, props changed)
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Subject: [Bug c++/78147] The -Wshadow warning is too aggressive with constructor parameters
Date: Thu, 14 Feb 2019 17:53:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=72789
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #1)
> Confirmed. Paul, please post your patch to gcc-patches. Personally, I
> think providing it under Clang's -Wunused-private-field for compatibility
> would be preferable to disabling the warning altogether.
>
For reference, the bug to add -Wunused-private-field is bug 72789, btw.
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Subject: [Bug d/87864] libdruntime doesn't link with /bin/ld before Solaris 11.4
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Rainer Orth <ro at gcc dot gnu.org> ---
Fixed for GCC 9.1.
>From gcc-bugs-return-633815-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 18:10:28 2019
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89352] Deferred length character array pointer error
Date: Thu, 14 Feb 2019 18:10:00 -0000
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |kargl at gcc dot gnu.org
--- Comment #1 from kargl at gcc dot gnu.org ---
The code works as expected with gfortran from trunk. Whether
the patch that fixed the bud will be back ported remains to
be detemined.
>From gcc-bugs-return-633816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 14 18:35:16 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> I thought that typically you can't build older gcc with newer gcc when using
> ada, at least I remember seeing issues with gcc 7 built with gcc 8 too when
> ada is enabled.
In openSUSE, we currently build gcc7 with gcc8 and it's fine:
https://build.opensuse.org/package/show/devel:gcc/gcc7
I saw failing gcc8 package being built with gcc9. Note that the gcc8 package is
using normal bootstrap.
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
Date: Thu, 14 Feb 2019 18:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89349
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #2)
> What happens without --disable-bootstrap?
My reproducer described in the first comment was:
1) build gcc trunk w/o bootstrap and install it
2) use the compiler and build gcc-8 branch w/o bootstrap
3) Ada FE is successfully built, but Ada runtime build fails (with gcc-8 Ada
FE)
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Thu, 14 Feb 2019 18:43:00 -0000
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
I'm testing a patch that gives a better error message and eliminates the ICE:
[bergner@dagger1 PR89313]$ cat pr89313.i
long f;
long g (void)
{
register long z asm ("rax");
asm ("foo %0, %1, %2" : "=&r" (z) : "r" (f), "0" (f));
return z;
}
[bergner@dagger1 PR89313]$
/home/bergner/gcc/build/gcc-fsf-mainline-pr89313-debug/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-pr89313-debug/gcc -O2 -S pr89313.i
pr89313.i: In function ‘g’:
pr89313.i:5:3: error: incompatible constraint usage for input operands when
paired with an early clobber operand
5 | asm ("foo %0, %1, %2" : "=&r" (z) : "r" (f), "0" (f));
| ^~~
[bergner@dagger1 PR89313]$
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Subject: [Bug rtl-optimization/85805] [7/8 Regression] Wrong code for 64 bit comparisons on avr-gcc
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85805
--- Comment #13 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Feb 14 18:46:18 2019
New Revision: 268888
URL: https://gcc.gnu.org/viewcvs?rev=268888&root=gcc&view=rev
Log:
Backport from trunk
2018-07-26 Segher Boessenkool <segher@kernel.crashing.org>
PR rtl-optimization/85805
* combine.c (reg_nonzero_bits_for_combine): Only use the last set
value for hard registers if that was written in the same mode.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/combine.c
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Subject: [Bug target/88145] ICE: unrecognizable insn (mffs) targeting 32-bit BE FPU-less powerpc CPUs
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |segher at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This doesn't backport to 8. Closing as fixed.
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Subject: [Bug target/88892] [8 Regression] Double-to-float conversion uses wrong rounding mode when followed by memcpy
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--- Comment #16 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Feb 14 18:57:54 2019
New Revision: 268889
URL: https://gcc.gnu.org/viewcvs?rev=268889&root=gcc&view=rev
Log:
Backport from trunk
2019-01-18 Segher Boessenkool <segher@kernel.crashing.org>
PR target/88892
* config/rs6000/rs6000.md (*movsi_from_df): Allow only register
operands.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
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--- Comment #15 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Feb 14 19:03:54 2019
New Revision: 268890
URL: https://gcc.gnu.org/viewcvs?rev=268890&root=gcc&view=rev
Log:
Backport from trunk
2018-08-31 Segher Boessenkool <segher@kernel.crashing.org>
PR target/86684
PR target/87149
* config/rs6000/rs6000.md (lround<mode>di2): Gate on TARGET_FPRND.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug target/87149] ICE in extract_insn, at recog.c:2305 on ppc64le
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--- Comment #13 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Feb 14 19:03:54 2019
New Revision: 268890
URL: https://gcc.gnu.org/viewcvs?rev=268890&root=gcc&view=rev
Log:
Backport from trunk
2018-08-31 Segher Boessenkool <segher@kernel.crashing.org>
PR target/86684
PR target/87149
* config/rs6000/rs6000.md (lround<mode>di2): Gate on TARGET_FPRND.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> My reproducer described in the first comment was:
> 1) build gcc trunk w/o bootstrap and install it
> 2) use the compiler and build gcc-8 branch w/o bootstrap
> 3) Ada FE is successfully built, but Ada runtime build fails (with gcc-8 Ada
> FE)
Sure, but the question is what happens if remove --disable-bootstrap from the
configure line you posted?
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Subject: [Bug fortran/71880] pointer to allocatable character
Date: Thu, 14 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71880
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
CC| |clange001 at gmail dot com
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 89352 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/89352] Deferred length character array pointer error
Date: Thu, 14 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89352
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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CC| |pault at gcc dot gnu.org
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I think it is a duplicate of pr71880.
I don't know how to read Paul's comment:
> I am trying to build up the intestinal fortitude to go back through
> some of the recent fixes and apply them to 8-branch.
*** This bug has been marked as a duplicate of bug 71880 ***
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Thu, 14 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68241
Bug 68241 depends on bug 89352, which changed state.
Bug 89352 Summary: Deferred length character array pointer error
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89352
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug target/88892] [8 Regression] Double-to-float conversion uses wrong rounding mode when followed by memcpy
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #17 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed on trunk and for 8.3.
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Subject: [Bug rtl-optimization/85805] [7/8 Regression] Wrong code for 64 bit comparisons on avr-gcc
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--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I backported it anyway.
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Subject: [Bug fortran/88248] [F18] Bogus warning about obsolescent feature: Labeled DO statement
Date: Thu, 14 Feb 2019 20:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88248
--- Comment #8 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Thu Feb 14 20:24:54 2019
New Revision: 268895
URL: https://gcc.gnu.org/viewcvs?rev=268895&root=gcc&view=rev
Log:
2019-02-14 Harald Anlauf <anlauf@gmx.de>
PR fortran/88248
* symbol.c: Move check for labeled DO statement from
gfc_define_st_label to gfc_reference_st_label.
PR fortran/88248
* gfortran.dg/pr88248.f90: New test.
* gfortran.dg/f2018_obs.f90: Updated test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr88248.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/symbol.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/f2018_obs.f90
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Subject: [Bug fortran/88248] [F18] Bogus warning about obsolescent feature: Labeled DO statement
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--- Comment #9 from Harald Anlauf <anlauf at gmx dot de> ---
Fixed.
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From: "rogero at howzatt dot demon.co.uk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/89358] New: Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89358
Bug ID: 89358
Summary: Combining -std=c++14 and -std=c++17 objects gives ODR
warnings
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: rogero at howzatt dot demon.co.uk
CC: marxin at gcc dot gnu.org
Target Milestone: ---
When object modules compiled with -std=c+14 and -std=c++17 are linked together
with -flto there can be warnings about ODR violations in standard library
headers
Example:
-- main.cpp --
#include <map>
extern void test();
int main()
{
std::map<int, int> m;
test();
}
-- test.cpp --
#include <map>
void test()
{
std::map<int, int> m;
}
-- ends --
g++ -flto -std=c++17 -c main.cpp
g++ -flto -std=c++14 -c test.cpp
g++ -flto main.o test.o
-- output --
/usr/share/gcc-trunk/include/c++/9.0.0/bits/stl_function.h:381:12: note: type
'struct less' itself violates the C++ One Definition Rule
381 | struct less : public binary_function<_Tp, _Tp, bool>
| ^
/usr/share/gcc-trunk/include/c++/9.0.0/bits/stl_tree.h:684:9: note: type
'struct _Rb_tree_impl' itself violates the C++ One Definition Rule
684 | struct _Rb_tree_impl
| ^
/usr/share/gcc-trunk/include/c++/9.0.0/bits/stl_map.h:100:11: note: type
'struct _Rep_type' itself violates the C++ One Definition Rule
100 | class map
| ^
With gcc trunk from 2019-01-19 on Cygwin.
Almost identical messages appear on RHEL with devtools-7 and with gcc 7.30 on
WSL
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Subject: [Bug lto/89358] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-14
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed. I can't see any difference between std::less<int> in C++14 and
C++17, so I have no idea what the ODR violation is supposed to be.
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
Date: Thu, 14 Feb 2019 21:07:00 -0000
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--- Comment #7 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Thu Feb 14 21:07:13 2019
New Revision: 268904
URL: https://gcc.gnu.org/viewcvs?rev=268904&root=gcc&view=rev
Log:
PR go/89321
compiler: copy has_padding field from converted struct
Test case is https://golang.org/cl/162617.
Fixes https://gcc.gnu.org/PR89321
Reviewed-on: https://go-review.googlesource.com/c/162618
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/gcc/go/gofrontend/types.cc
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Subject: [Bug go/89321] cross build with riscv64 gccgo compilation failed due to assert in constructor_expression
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #8 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed.
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Subject: [Bug fortran/81552] -finit-integer=n is restricted to 32-bit INTEGER.
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--- Comment #5 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Author: jb
Date: Thu Feb 14 21:33:29 2019
New Revision: 268906
URL: https://gcc.gnu.org/viewcvs?rev=268906&root=gcc&view=rev
Log:
PR 81552 Improve and document -flag-init-integer
Make the option handling code parse the -flag-init-integer value as a
C long type, allowing a larger range on systems where long is a larger
type than int. Document the behavior.
Regtested on x86_64-pc-linux-gnu, committed as obvious.
2019-02-14 Janne Blomqvist <jb@gcc.gnu.org>
PR fortran/81552
* gfortran.h (gfc_option_t): Make flag_init_integer_value a long.
* options.c (gfc_handle_option): Use strtol instead of atoi.
* invoke.texi: Document -finit-integer behavior in more detail
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/invoke.texi
trunk/gcc/fortran/options.c
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Subject: [Bug fortran/81552] -finit-integer=n is restricted to 32-bit INTEGER.
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Fixed on trunk, closing.
The patch uses strtol() since that is in C89 and thus available everywhere.
This close to the GCC 9 release I didn't want to risk breaking some targets I
don't have a GCC development environment setup on.
strtoll and int64_t are in C99 and with some GCC headers and libiberty they
should be available everywhere, which would make this patch work on 32-bit and
LLP64 (e.g. win64) targets. If anyone is interested in pursuing this I suggest
reopening this bug report and submitting a patch when GCC is in stage 1.
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Subject: [Bug fortran/88248] [F18] Bogus warning about obsolescent feature: Labeled DO statement
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Fixed.
So closing!
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Thu, 14 Feb 2019 22:41:00 -0000
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--- Comment #16 from Harald Anlauf <anlauf at gmx dot de> ---
Regarding the unwanted padding with \0, the following patch seems to
solve the issue with transfer.
Index: decl.c
===================================================================
--- decl.c (revision 268897)
+++ decl.c (working copy)
@@ -1754,6 +1754,12 @@
free (expr->value.character.string);
expr->value.character.string = s;
expr->value.character.length = len;
+ if (expr->representation.length)
+ {
+ expr->representation.length = 0;
+ free (expr->representation.string);
+ expr->representation.string = NULL;
+ }
}
}
Testcase:
character(8) ,parameter :: s = transfer ('ab', 'cd')
character(8) ,parameter :: t = 2Hxy
print *, "'", s, "'"
print *, "'", t, "'"
end
./a.out | cat -v
'ab '
'xy '
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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--- Comment #9 from Mark Wielaard <mark at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #8)
> The patch I posted for the related pr88993 also relaxes this warning for
> printf and fprintf: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00224.html
>
> Like in the case of pr88993, the warning is by design and (in my view) makes
> sense for sprintf but it's not very useful for the other functions where
> very little code worries about exceeding these limits (or even cares about
> the functions failing as they can for many other reasons).
I tried that patch, but it does not fix this issue. This case now triggers the
following warning, which isn't guarded by is_string_func:
/* The directive output or either causes or may cause the total
length of output to exceed INT_MAX bytes. */
if (likelyximax && fmtres.range.min == fmtres.range.max)
warned = fmtwarn (dirloc, argloc, NULL, info.warnopt (),
"%<%.*s%> directive output of %wu bytes causes "
"result to exceed %<INT_MAX%>", dirlen,
target_to_host (hostdir, sizeof hostdir, dir.beg),
fmtres.range.min);
So with that patch we get:
/home/mark/src/elfutils/src/readelf.c: In function ‘print_debug_str_section’:
/home/mark/src/elfutils/src/readelf.c:10167:15: error: ‘] "’ directive output
of 4 bytes causes result to exceed ‘INT_MAX’ [-Werror=format-overflow=]
10167 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
| ^~~~~~
/home/mark/src/elfutils/src/readelf.c:10167:30: note: format string is defined
here
10167 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
| ^~~~~
cc1: all warnings being treated as errors
Which is actually more mysterious than the previous warning (without the patch
as shown in description).
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Subject: [Bug c++/85515] Bogus suggestions from "GCC's leaky abstractions"
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--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 14 22:57:34 2019
New Revision: 268908
URL: https://gcc.gnu.org/viewcvs?rev=268908&root=gcc&view=rev
Log:
Don't offer suggestions for compiler-generated variables (PR c++/85515)
gcc/cp/ChangeLog:
Backport of r259720 from trunk.
2018-04-27 David Malcolm <dmalcolm@redhat.com>
PR c++/85515
* name-lookup.c (consider_binding_level): Skip compiler-generated
variables.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Flatten
nested if statements into a series of rejection tests. Reject
lambda-ignored entities as suggestions.
gcc/testsuite/ChangeLog:
Backport of r259720 from trunk.
2018-04-27 David Malcolm <dmalcolm@redhat.com>
PR c++/85515
* g++.dg/pr85515-1.C: New test.
* g++.dg/pr85515-2.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr85515-1.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr85515-2.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/name-lookup.c
branches/gcc-8-branch/gcc/cp/search.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Thu, 14 Feb 2019 22:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning is very simple: it just looks for excessive sizes in calls emitted
in the optimized IL. When the call is there (either because it's in the source
code as is or because it's been synthesized by GCC based on the invariants it
can infer from the code) it triggers. It runs after all high-level
optimizations, including DCE, and assumes that if the statement is in the IL it
is reachable. Compiling the test case with -fdump-tree-optimized=/dev/stdout
shows the GIMPLE the warning works with:
<bb 20> [local count: 233860936]:
# iftmp.6_113 = PHI <iftmp.6_112(19), &D.3395.u.internal.str(18)>
memset (iftmp.6_113, 0, 18446744073709551613);
I think the issue can essentially be reduced to the following:
$ cat z.c && gcc -O2 -S -fdump-tree-optimized=/dev/stdout z.c
void f (char *d, const char *s)
{
if (__builtin_strstr (s, "ABC"))
{
__SIZE_TYPE__ n = __builtin_strlen (s) - 3;
if (n > __builtin_strlen (s)) // cannot be true
__builtin_memset (d, 0, n - __builtin_strlen (s));
}
}
;; Function f (f, funcdef_no=0, decl_uid=1907, cgraph_uid=1, symbol_order=0)
Removing basic block 6
Removing basic block 7
f (char * d, const char * s)
{
char * _1;
long unsigned int _2;
<bb 2> [local count: 1073741824]:
_1 = __builtin_strstr (s_5(D), "ABC");
if (_1 != 0B)
goto <bb 3>; [70.00%]
else
goto <bb 5>; [30.00%]
<bb 3> [local count: 751619278]:
_2 = __builtin_strlen (s_5(D));
if (_2 <= 2)
goto <bb 4>; [33.00%]
else
goto <bb 5>; [67.00%]
<bb 4> [local count: 248034361]:
__builtin_memset (d_6(D), 0, 18446744073709551613); [tail call]
<bb 5> [local count: 1073741824]:
return;
}
z.c: In function ‘f’:
z.c:8:9: warning: ‘__builtin_memset’ specified size 18446744073709551613
exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
8 | __builtin_memset (d, 0, n - __builtin_strlen (s));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GCC doesn't have the smarts to figure out that when s contains a substring of
length 3 then strlen(s) must be at least 3. As a result, it doesn't eliminate
the memset call in the function and the warning triggers. Suppose we teach GCC
how to figure this out from the strstr call (which might be a useful
optimization) and then someone comes along with a test case that uses strspn()
instead of strstr(). We can also teach GCC about strstr() but then someone
else might use regcomp() or some user-defined function that we won't have
access to. At some point we'll have to call it good enough.
It's helpful to keep in mind that no control flow or data flow-based warning is
free of false positives (or negatives), either in GCC or in any static
analyzer. Analyzing only provably reachable code would mean not diagnosing
bugs in translation units without main because we cannot prove that they're
ever called. Similarly, at the function level, it would mean not diagnosing
bugs in conditional statements unless the conditions could be proven to be true
at compile time. That would make not only the false positive rate nearly zero,
it would also make the true positive rate nearly zero. In effect, it would make
the diagnostics virtually useless, able to detect only bugs in the simplest
code. If you find a non-zero rate of false positives unacceptable then my
suggestion is to turn warnings off. Not just this one but all others as most
have some false positives, including the front-ends ones that have no notion of
reachability. Otherwise, if you accept that some false positives are
unavoidable and worth the checking GCC does, then until the strstr optimization
above is implemented, I would recommend to make use of __builtin_unreachable():
void trim_asterisk(seastar::sstring &name) {
if (name.find("ABC") != seastar::sstring::npos) {
if (name.length () < 3)
__builtin_unreachable ();
name.resize(name.length() - 3);
}
}
Chances are that besides avoiding the warning it will also improve the quality
of the object code. When hidden behind a well-named macro it might also
improve readability.
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86329] Bogus fix-it hint: note: suggested alternative: '._72'
Date: Thu, 14 Feb 2019 23:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86329
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 14 23:02:45 2019
New Revision: 268909
URL: https://gcc.gnu.org/viewcvs?rev=268909&root=gcc&view=rev
Log:
C++: don't offer bogus "._0" suggestions (PR c++/86329)
PR c++/86329 reports that the C++ frontend can offer bogus suggestions like:
#include <string>
int compare()
{
return __n1 - __n2;
}
suggested.cc: In function 'int compare()':
suggested.cc:5:10: error: '__n1' was not declared in this scope
return __n1 - __n2;
^~~~
suggested.cc:5:10: note: suggested alternative: '._61'
return __n1 - __n2;
^~~~
._61
suggested.cc:5:17: error: '__n2' was not declared in this scope
return __n1 - __n2;
^~~~
suggested.cc:5:17: note: suggested alternative: '._72'
return __n1 - __n2;
^~~~
._72
The dot-prefixed names are an implementation detail of how we implement
anonymous enums found in the header files, generated via
anon_aggrname_format in make_anon_name.
This patch uses anon_aggrname_p to filter them out when considering
which names to suggest.
gcc/cp/ChangeLog:
Backport of r262199 from trunk.
2018-06-27 David Malcolm <dmalcolm@redhat.com>
PR c++/86329
* name-lookup.c (consider_binding_level): Filter out names that
match anon_aggrname_p.
gcc/testsuite/ChangeLog:
Backport of r262199 from trunk.
2018-06-27 David Malcolm <dmalcolm@redhat.com>
PR c++/86329
* g++.dg/lookup/pr86329.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/lookup/pr86329.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/name-lookup.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Thu, 14 Feb 2019 23:11:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 23:10:47 2019
New Revision: 268913
URL: https://gcc.gnu.org/viewcvs?rev=268913&root=gcc&view=rev
Log:
PR rtl-optimization/89354
* combine.c (make_extraction): Punt if extraction_mode is narrower
than len bits.
* gcc.dg/pr89354.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89354.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89354] [7/8/9 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Thu, 14 Feb 2019 23:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89354
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 14 23:12:26 2019
New Revision: 268914
URL: https://gcc.gnu.org/viewcvs?rev=268914&root=gcc&view=rev
Log:
PR rtl-optimization/89354
* combine.c (make_extraction): Punt if extraction_mode is narrower
than len bits.
* gcc.dg/pr89354.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr89354.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/combine.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88795] ICE on class-template argument deduction if non-type parameter has indirection
Date: Thu, 14 Feb 2019 23:15:00 -0000
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--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 14 23:14:56 2019
New Revision: 268915
URL: https://gcc.gnu.org/viewcvs?rev=268915&root=gcc&view=rev
Log:
Fix ICE on class-template argument deduction (PR c++/88795)
PR c++/88795 reports an ICE building a function_type for a deduction guide
when the substitution into the function signature fails, due to an
error_mark_node being returned from tsubst_arg_types but not being checked
for. This error_mark_node gets used as the TYPE_ARG_TYPES, leading to
ICEs in various places that assume this is a TREE_LIST.
This patch checks the result of tsubst_arg_types and propagates the failure
if it returns error_mark_node. It also adds an assertion to
build_function_type, to fail faster if passed in error_mark_node.
gcc/cp/ChangeLog:
Backport of r267957 from trunk.
2019-01-15 David Malcolm <dmalcolm@redhat.com>
PR c++/88795
* pt.c (build_deduction_guide): Bail out if tsubst_arg_types
fails.
gcc/testsuite/ChangeLog:
Backport of r267957 from trunk.
2019-01-15 David Malcolm <dmalcolm@redhat.com>
PR c++/88795
* g++.dg/template/pr88795.C: New test.
gcc/ChangeLog:
Backport of r267957 from trunk.
2019-01-15 David Malcolm <dmalcolm@redhat.com>
PR c++/88795
* tree.c (build_function_type): Assert that arg_types is not
error_mark_node.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/template/pr88795.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/pt.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree.c
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Subject: [Bug c++/89036] [8 Regression] ICE if destructor has a requires
Date: Thu, 14 Feb 2019 23:18:00 -0000
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--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 14 23:17:51 2019
New Revision: 268916
URL: https://gcc.gnu.org/viewcvs?rev=268916&root=gcc&view=rev
Log:
C++ concepts: fix ICE with requires on dtors (PR c++/89036)
PR c++/89036 reports an ICE due to this assertion failing
1136 /* A class should never have more than one destructor. */
1137 gcc_assert (!current_fns || via_using || !DECL_DESTRUCTOR_P
(method));
on this template with a pair of dtors, with
mutually exclusive "requires" clauses:
template<typename T>
struct Y {
~Y() requires(true) = default;
~Y() requires(false) {}
};
Nathan introduced this assertion as part of:
ca9219bf18c68a001d62ecb981bc9176b0feaf12 (aka r251340):
2017-08-24 Nathan Sidwell <nathan@acm.org>
Conversion operators kept on single overload set
which, amongst other changes to add_method had this:
/* A class should never have more than one destructor. */
- if (current_fns && DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (method))
- return false;
+ gcc_assert (!current_fns || !DECL_DESTRUCTOR_P (method));
The following patch drops the assertion.
gcc/cp/ChangeLog:
2019-02-13 David Malcolm <dmalcolm@redhat.com>
Backport of r268847 from trunk.
PR c++/89036
* class.c (add_method): Drop destructor assertion.
gcc/testsuite/ChangeLog:
2019-02-13 David Malcolm <dmalcolm@redhat.com>
Backport of r268847 from trunk.
PR c++/89036
* g++.dg/concepts/pr89036.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/concepts/pr89036.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/class.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/67491] [meta-bug] concepts issues
Date: Thu, 14 Feb 2019 23:20:00 -0000
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Bug 67491 depends on bug 89036, which changed state.
Bug 89036 Summary: [8 Regression] ICE if destructor has a requires
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89036
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/89036] [8 Regression] ICE if destructor has a requires
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Fixed on gcc-8-branch by r268916; marking as FIXED.
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Subject: [Bug middle-end/70090] add non-constant variant of __builtin_object_size for _FORTIFY_SOURCE and -fsanitize=object-size
Date: Thu, 14 Feb 2019 23:25:00 -0000
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--- Comment #2 from Daniel Micay <danielmicay at gmail dot com> ---
This has now been implemented in Clang as __builtin_dynamic_object_size.
There's a thread on the GCC mailing list about it at
https://www.mail-archive.com/gcc@gcc.gnu.org/msg87230.html.
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Thu, 14 Feb 2019 23:34:00 -0000
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The -Wstringop-overflow warning is a consequence of pointer offsets being
treated as unsigned integers, argc being signed, and the object size
computation returning scalars rather than ranges. In the first test case (with
argc + 0):
<bb 3> [local count: 354334802]:
_1 = (sizetype) argc_5(D);
_2 = -_1;
dst_7 = &MEM[(void *)&buf + 128B] + _2;
src.0_3 = src;
__builtin_memcpy (dst_7, src.0_3, _1);
When computing the size of dst_7 the compute_objsize() function determines the
offset _2 to be in the range [1, SIZE_MAX] and doesn't consider the fact that
the upper half of the range represents negative values. As a result, it
determines the size to be zero. The number of bytes to write (i.e.,
(size_t)(argc + 1) is [1, SIZE_MAX]).
The test case makes the tacit assumption that argc is necessarily non-negative.
That makes sense for the argc argument to main but not in other situations.
Changing the if condition to make the assumption explicit 'if (argc > 0)'
eliminates the warning. This makes range of the offset [-INT_MAX, -1], and
because compute_objsize() doesn't handle negative offsets, it fails to
determine the size. There's a comment indicating that is not a feature but a
known limitation:
/* Ignore negative offsets for now. For others,
use the lower bound as the most optimistic
estimate of the (remaining)size. */
If I recall I did that not because negative offsets cannot be handled better
but to keep the code simple. Either way, with negative offsets handled the
warning will not be issued.
The missing -Wstringop-overflow in the second test case (with argc + 1):
<bb 3> [local count: 354334802]:
_1 = (sizetype) argc_7(D);
_2 = -_1;
dst_9 = &MEM[(void *)&buf + 128B] + _2;
_3 = argc_7(D) + 1;
_4 = (long unsigned int) _3;
src.0_5 = src;
__builtin_memcpy (dst_9, src.0_5, _4);
is due to the number of bytes to write is [0, INT_MAX] so the warning doesn't
trigger.
The bogus warning can be avoided in the first case simply by punting on offsets
that could be in the negative range, but almost certainly not without some
false negatives. I'm not sure it's necessarily a good tradeoff (I don't know
that it isn't either). Is this code representative of some wide-spread idiom?
A more robust solution, one that gets rid of the false positives without as
many false negatives, will involve changing compute_objsize() to return a range
of sizes rather than a constant. But that will have to wait for GCC 10.
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
Date: Fri, 15 Feb 2019 00:11:00 -0000
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A similar testcase
template<typename T> auto fn () -> decltype(unsigned{0} + T(1));
auto e = fn<int>();
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Fri, 15 Feb 2019 00:16:00 -0000
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--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
I've built the top of binutils-gdb with the patch referenced in comment #8
applied and with -Wformat-overflow=2 and -Wformat-truncation=2 and got the
following breakdown:
Diagnostic Count Unique Files
-Wformat-overflow= 19 19 10
-Wformat-truncation= 12 12 7
-Wconflicts-sr 7 7 7
-Wmaybe-uninitialized 3 3 3
-Wstringop-truncation 2 2 2
-Wconflicts-rr 2 2 2
-Wsign-compare 1 1 1
-Wother 1 1 1
The -Wformat-overflow warnings are:
/src/binutils-gdb/gas/macro.c:386:18: warning: ‘sprintf’ may write a
terminating nul past the end of the destination [-Wformat-overflow=]
/src/binutils-gdb/binutils/arsup.c:158:20: warning: ‘%.*s’ directive output
between 0 and 2147483647 bytes may exceed minimum required size of 4095
[-Wformat-overflow=]
/src/binutils-gdb/binutils/wrstabs.c:426:21: warning: ‘sprintf’ may write a
terminating nul past the end of the destination [-Wformat-overflow=]
/src/binutils-gdb/binutils/wrstabs.c:739:27: warning: ‘%u’ directive writing
between 1 and 10 bytes into a region of size between 7 and 45
[-Wformat-overflow=]
/src/binutils-gdb/binutils/wrstabs.c:620:26: warning: ‘%ld’ directive writing
between 1 and 20 bytes into a region of size between 19 and 38
[-Wformat-overflow=]
/src/binutils-gdb/binutils/wrstabs.c:595:26: warning: ‘%ld’ directive writing
between 1 and 20 bytes into a region of size between 19 and 38
[-Wformat-overflow=]
eelf_iamcu.c:635:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_iamcu.c:628:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_x86_64.c:638:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_x86_64.c:631:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_i386.c:638:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_i386.c:631:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf32_x86_64.c:638:25: warning: ‘%.*s’ directive output between 0 and
2147483647 bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf32_x86_64.c:631:25: warning: ‘%.*s’ directive output between 0 and
2147483647 bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_k1om.c:638:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_k1om.c:631:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_l1om.c:638:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
eelf_l1om.c:631:25: warning: ‘%.*s’ directive output between 0 and 2147483647
bytes may exceed minimum required size of 4095 [-Wformat-overflow=]
/src/binutils-gdb/gdb/gdbserver/remote-utils.c:1188:21: warning: ‘%s’ directive
output between 0 and 8191 bytes may exceed minimum required size of 4095
[-Wformat-overflow=]
None for readelf.c. I think they are all for sprintf (and not printf or
fprintf), so I'm not sure where the ones you are seeing are coming from.
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
Ah, but you mentioned elfutilts, not binutils. I've now downloaded and built
elfutils-0.175. It took a bit more effort because --disable-werror doesn't
work there but once I got past that I just got the three -Wformat-truncation
instances below:
Diagnostic Count Unique Files
-Wformat-truncation= 3 3 2
-Wformat-truncation Instances:
/src/elfutils-0.175/src/ar.c:1468
/src/elfutils-0.175/src/ar.c:859
/src/elfutils-0.175/src/arlib.c:63
The code at line 10167 in readelf.c looks like this:
static void
print_debug_str_offsets_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
Ebl *ebl,
GElf_Ehdr *ehdr __attribute__ ((unused)),
Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
{
printf (gettext ("\
\nDWARF section [%2zu] '%s' at offset %#" PRIx64 ":\n"),
elf_ndxscn (scn), section_name (ebl, shdr),
(uint64_t) shdr->sh_offset);
I'm probably not using the same sources as you, but shouldn't I be seeing at
least some of the warnings? (I couldn't find an easy way build the top of
trunk -- there's no configure script.)
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Subject: [Bug go/89168] FAIL: cmd/go/internal/load
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Feb 15 00:36:50 2019
New Revision: 268922
URL: https://gcc.gnu.org/viewcvs?rev=268922&root=gcc&view=rev
Log:
PR go/89168
libgo: change gotest to run examples with output
Change the gotest script to act like "go test" and run examples that
have "output" comments. This is not done with full generality, but
just enough to run the libgo tests. Other packages should be tested
with "go test" as usual.
While we're here clean up some old bits of gotest, and only run
TestXXX functions that are actually in *_test.go files. The latter
change should fix https://gcc.gnu.org/PR89168.
Reviewed-on: https://go-review.googlesource.com/c/162139
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/runtime/example_test.go
trunk/libgo/testsuite/gotest
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
--- Comment #12 from Mark Wielaard <mark at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #11)
> Ah, but you mentioned elfutilts, not binutils. I've now downloaded and
> built elfutils-0.175. It took a bit more effort because --disable-werror
> doesn't work there but once I got past that I just got the three
> -Wformat-truncation instances below:
>
> Diagnostic Count Unique Files
> -Wformat-truncation= 3 3 2
>
> -Wformat-truncation Instances:
> /src/elfutils-0.175/src/ar.c:1468
> /src/elfutils-0.175/src/ar.c:859
> /src/elfutils-0.175/src/arlib.c:63
I am not seeing these, but they might have been fixed in git. We like to keep
the code warning free since we always build with -Werror.
> I'm probably not using the same sources as you, but shouldn't I be seeing at
> least some of the warnings? (I couldn't find an easy way build the top of
> trunk -- there's no configure script.)
I am using git master. git://sourceware.org/git/elfutils.git
See the README for build instructions:
To build a git checkout do:
autoreconf -i -f && \
./configure --enable-maintainer-mode && \
make && make check
Note that the warning/error only occurs on 32bit systems, like these fedora
koji arm32 and i686 builds:
https://koji.fedoraproject.org/koji/taskinfo?taskID=32816136
To get the same on a 64bit system build with CFLAGS="-g -O2 -m32"
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Fixed.
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #13 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Has this gone away? I seem to have applied what I believe to be
> the right patch as fallout from another PR.
Any answer to this question?
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
That revision also changes mangling of fn from
decltype (unsigned short{2u}+((int)(3))) fn<int>()
to
decltype ((2u)+((int)(3))) fn<int>()
template<typename T>
auto fn () -> decltype(unsigned{2u} + (T)3) { return 42; }
template auto fn<int>() -> decltype(unsigned{2u} + (int)3);
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
reshape_init turns {NON_LVALUE_EXPR <2>} into NON_LVALUE_EXPR <2> and then the
mangled name misses "tl<type><expr>E".
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Subject: [Bug tree-optimization/85316] [meta-bug] VRP range propagation missed cases
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
There's probably a lot more bugs that should fall under this meta-bug than
currently do; I'll leave finding them all for another day though (or for
someone else to do)
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #1)
>
> The test case makes the tacit assumption that argc is necessarily
> non-negative. That makes sense for the argc argument to main but not in
> other situations.
Would it be possible to propose an update to the C standard that allows the
argc argument to main to be unsigned? Could GCC start accepting unsigned argc
as an extension so that -Wmain allows it?
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Fri, 15 Feb 2019 05:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #13 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #10)
> I've built the top of binutils-gdb with the patch referenced in comment #8
> applied and with -Wformat-overflow=2 and -Wformat-truncation=2 and got the
> following breakdown:
>
> Diagnostic Count Unique Files
> -Wformat-overflow= 19 19 10
> -Wformat-truncation= 12 12 7
> -Wconflicts-sr 7 7 7
> -Wmaybe-uninitialized 3 3 3
> -Wstringop-truncation 2 2 2
> -Wconflicts-rr 2 2 2
> -Wsign-compare 1 1 1
> -Wother 1 1 1
Tangent, but -Wconflicts-sr, -Wconflicts-rr, and -Wother are from bison, not
gcc, so you might want to update whatever tool you use to generate these pretty
tables to filter them out
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Subject: [Bug other/89342] ICE in maybe_default_option, at opts.c:347
Date: Fri, 15 Feb 2019 07:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89342
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:17:24 2019
New Revision: 268924
URL: https://gcc.gnu.org/viewcvs?rev=268924&root=gcc&view=rev
Log:
PR other/89342
* optc-save-gen.awk: Handle optimize_fast like optimize_size or
optimize_debug.
* opth-gen.awk: Likewise.
* gcc.dg/pr89342.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89342.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optc-save-gen.awk
trunk/gcc/opth-gen.awk
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug other/89342] ICE in maybe_default_option, at opts.c:347
Date: Fri, 15 Feb 2019 07:37:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:36:23 2019
New Revision: 268925
URL: https://gcc.gnu.org/viewcvs?rev=268925&root=gcc&view=rev
Log:
PR other/89342
* optc-save-gen.awk: Handle optimize_fast like optimize_size or
optimize_debug.
* opth-gen.awk: Likewise.
* gcc.dg/pr89342.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr89342.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/optc-save-gen.awk
branches/gcc-8-branch/gcc/opth-gen.awk
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c/89340] [7/8/9 Regression] ICE in function_and_variable_visibility, at ipa-visibility.c:707
Date: Fri, 15 Feb 2019 07:38:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:38:09 2019
New Revision: 268926
URL: https://gcc.gnu.org/viewcvs?rev=268926&root=gcc&view=rev
Log:
PR c/89340
* c-decl.c (start_function): Clear TREE_PUBLIC on nested functions
before c_decl_attributes rather than after it.
* gcc.dg/pr89340.c: New test.
* gcc.dg/torture/pr57036-2.c (jpgDecode_convert): Expect a warning
that leaf attribute on nested function is useless.
Added:
trunk/gcc/testsuite/gcc.dg/pr89340.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/torture/pr57036-2.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Fri, 15 Feb 2019 07:40:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:39:45 2019
New Revision: 268927
URL: https://gcc.gnu.org/viewcvs?rev=268927&root=gcc&view=rev
Log:
PR tree-optimization/89278
* tree-loop-distribution.c: Include tree-eh.h.
(generate_memset_builtin, generate_memcpy_builtin): Call
rewrite_to_non_trapping_overflow on builtin->size before passing it
to force_gimple_operand_gsi.
* gcc.dg/pr89278.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89278.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-loop-distribution.c
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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89355] Unnecessary ENDBR
Date: Fri, 15 Feb 2019 07:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89355
--- Comment #1 from åˆ˜è¢‹é¼ <crazylht at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> [hjl@gnu-cfl-2 gcc]$ cat x.i
> int
> test (int* val)
> {
> int status = 99;
>
> if((val == 0))
> {
> status = 22;
> goto end;
> }
>
> extern int x;
> *val = x;
>
> status = 0;
> end:
> return status;
> }
>
> [hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -S -O2 -fcf-protection x.i
> [hjl@gnu-cfl-2 gcc]$ cat x.s
> .file "x.i"
> .text
> .p2align 4
> .globl test
> .type test, @function
> test:
> .LFB0:
> .cfi_startproc
> endbr64
> testq %rdi, %rdi
> je .L3
> movl x(%rip), %eax
> movl %eax, (%rdi)
> xorl %eax, %eax
> ret
> .p2align 4,,10
> .p2align 3
> .L3:
> .L2:
> endbr64 <<< Why is ENDBR here? There is no indirect branch.
> movl $22, %eax
> ret
> .cfi_endproc
> .LFE0:
> .size test, .-test
> .ident "GCC: (GNU) 9.0.1 20190214 (experimental)"
> .section .note.GNU-stack,"",@progbits
> .section .note.gnu.property,"a"
> .align 8
> .long 1f - 0f
> .long 4f - 1f
> .long 5
> 0:
> .string "GNU"
> 1:
> .align 8
> .long 0xc0000002
> .long 3f - 2f
> 2:
> .long 0x3
> 3:
> .align 8
> 4:
> [hjl@gnu-cfl-2 gcc]$
I investigate the second endbr64 in the upper case:
for dump x.i.312r.cet
(code_label 24 27 23 4 3 (nil) [1 uses])
(note 23 24 13 4 [bb 4] NOTE_INSN_BASIC_BLOCK)
(note 13 23 39 4 ("end") NOTE_INSN_DELETED_LABEL 2)
(insn 39 13 5 4 (unspec_volatile [
(const_int 0 [0])
] UNSPECV_NOP_ENDBR) -1
(nil))
for gcc source code:
if ((LABEL_P (insn) && LABEL_PRESERVE_P (insn))
|| (NOTE_P (insn)
&& NOTE_KIND (insn) == NOTE_INSN_DELETED_LABEL))
/* TODO. Check /s bit also. */
{
cet_eb = gen_nop_endbr ();
emit_insn_after (cet_eb, insn);
continue;
}
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Subject: [Bug target/89355] Unnecessary ENDBR
Date: Fri, 15 Feb 2019 07:44:00 -0000
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--- Comment #2 from åˆ˜è¢‹é¼ <crazylht at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> [hjl@gnu-cfl-2 gcc]$ cat x.i
> int
> test (int* val)
> {
> int status = 99;
>
> if((val == 0))
> {
> status = 22;
> goto end;
> }
>
> extern int x;
> *val = x;
>
> status = 0;
> end:
> return status;
> }
>
> [hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -S -O2 -fcf-protection x.i
> [hjl@gnu-cfl-2 gcc]$ cat x.s
> .file "x.i"
> .text
> .p2align 4
> .globl test
> .type test, @function
> test:
> .LFB0:
> .cfi_startproc
> endbr64
> testq %rdi, %rdi
> je .L3
> movl x(%rip), %eax
> movl %eax, (%rdi)
> xorl %eax, %eax
> ret
> .p2align 4,,10
> .p2align 3
> .L3:
> .L2:
> endbr64 <<< Why is ENDBR here? There is no indirect branch.
> movl $22, %eax
> ret
> .cfi_endproc
> .LFE0:
> .size test, .-test
> .ident "GCC: (GNU) 9.0.1 20190214 (experimental)"
> .section .note.GNU-stack,"",@progbits
> .section .note.gnu.property,"a"
> .align 8
> .long 1f - 0f
> .long 4f - 1f
> .long 5
> 0:
> .string "GNU"
> 1:
> .align 8
> .long 0xc0000002
> .long 3f - 2f
> 2:
> .long 0x3
> 3:
> .align 8
> 4:
> [hjl@gnu-cfl-2 gcc]$
I investigate the second endbr64 in the upper case:
for dump x.i.312r.cet
(code_label 24 27 23 4 3 (nil) [1 uses])
(note 23 24 13 4 [bb 4] NOTE_INSN_BASIC_BLOCK)
(note 13 23 39 4 ("end") NOTE_INSN_DELETED_LABEL 2)
(insn 39 13 5 4 (unspec_volatile [
(const_int 0 [0])
] UNSPECV_NOP_ENDBR) -1
(nil))
(note 13 23 39 4 ("end") NOTE_INSN_DELETED_LABEL 2)
will enter following branch which emit endbr64
for gcc source code:
if ((LABEL_P (insn) && LABEL_PRESERVE_P (insn))
|| (NOTE_P (insn)
&& NOTE_KIND (insn) == NOTE_INSN_DELETED_LABEL))
/* TODO. Check /s bit also. */
{
cet_eb = gen_nop_endbr ();
emit_insn_after (cet_eb, insn);
continue;
}
Following patch would fix this problem:
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 12bc7926f86..2282816ae19 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2734,9 +2734,10 @@ rest_of_insert_endbranch (void)
continue;
}
- if ((LABEL_P (insn) && LABEL_PRESERVE_P (insn))
+ if ((LABEL_P (insn)
|| (NOTE_P (insn)
&& NOTE_KIND (insn) == NOTE_INSN_DELETED_LABEL))
+ && LABEL_PRESERVE_P (insn))
/* TODO. Check /s bit also. */
{
cet_eb = gen_nop_endbr ();
>From gcc-bugs-return-633870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:51:03 2019
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Fri, 15 Feb 2019 07:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89278
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:50:26 2019
New Revision: 268928
URL: https://gcc.gnu.org/viewcvs?rev=268928&root=gcc&view=rev
Log:
PR tree-optimization/89278
* tree-loop-distribution.c: Include tree-eh.h.
(generate_memset_builtin, generate_memcpy_builtin): Call
rewrite_to_non_trapping_overflow on builtin->size before passing it
to force_gimple_operand_gsi.
* gcc.dg/pr89278.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr89278.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-loop-distribution.c
>From gcc-bugs-return-633872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:53:27 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Fri, 15 Feb 2019 07:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88920
--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:52:50 2019
New Revision: 268930
URL: https://gcc.gnu.org/viewcvs?rev=268930&root=gcc&view=rev
Log:
PR other/69006
PR testsuite/88920
* lib/gcc-dg.exp: If llvm_binutils effective target, set
allow_blank_lines to 2 during initialization.
(dg-allow-blank-lines-in-output): Set allow_blank_lines to 1 only if
it was previously zero.
(gcc-dg-prune): Don't check for llvm_binutils effective target here.
Clear allow_blank_lines afterwards whenever it was 1.
* gdc.test/gdc-test.exp (dmd2dg): Don't call
dg-allow-blank-lines-in-output here.
(gdc-do-test): Set allow_blank_lines to 3 if it is 0 before running
the tests and restore it back at the end.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gdc.test/gdc-test.exp
trunk/gcc/testsuite/lib/gcc-dg.exp
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Subject: [Bug other/69006] [6 Regression] Extraneous newline emitted between error messages in GCC 6
Date: Fri, 15 Feb 2019 07:53:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 15 07:52:50 2019
New Revision: 268930
URL: https://gcc.gnu.org/viewcvs?rev=268930&root=gcc&view=rev
Log:
PR other/69006
PR testsuite/88920
* lib/gcc-dg.exp: If llvm_binutils effective target, set
allow_blank_lines to 2 during initialization.
(dg-allow-blank-lines-in-output): Set allow_blank_lines to 1 only if
it was previously zero.
(gcc-dg-prune): Don't check for llvm_binutils effective target here.
Clear allow_blank_lines afterwards whenever it was 1.
* gdc.test/gdc-test.exp (dmd2dg): Don't call
dg-allow-blank-lines-in-output here.
(gdc-do-test): Set allow_blank_lines to 3 if it is 0 before running
the tests and restore it back at the end.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gdc.test/gdc-test.exp
trunk/gcc/testsuite/lib/gcc-dg.exp
>From gcc-bugs-return-633873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:55:17 2019
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Subject: [Bug other/89342] ICE in maybe_default_option, at opts.c:347
Date: Fri, 15 Feb 2019 07:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.3
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+.
>From gcc-bugs-return-633875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:56:31 2019
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Subject: [Bug tree-optimization/89278] ICE in gimplify_modify_expr, at gimplify.c:5821
Date: Fri, 15 Feb 2019 07:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+.
>From gcc-bugs-return-633876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:56:43 2019
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Fri, 15 Feb 2019 07:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-633874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:56:15 2019
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Subject: [Bug c/89340] [7/8 Regression] ICE in function_and_variable_visibility, at ipa-visibility.c:707
Date: Fri, 15 Feb 2019 07:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|function_and_variable_visib |function_and_variable_visib
|ility, at |ility, at
|ipa-visibility.c:707 |ipa-visibility.c:707
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk. Not really sure if this should be backported, for the
release branches it might be better to silently ignore the weak flag.
>From gcc-bugs-return-633877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 07:57:31 2019
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Subject: [Bug rtl-optimization/89354] [7 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
Date: Fri, 15 Feb 2019 07:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] Combine |[7 Regression] Combine pass
|pass yields wrong code with |yields wrong code with -O2
|-O2 and -msse2 for 32bit |and -msse2 for 32bit target
|target |
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ so far.
>From gcc-bugs-return-633878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 08:31:08 2019
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Fri, 15 Feb 2019 08:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89350
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, we could perhaps do something like:
--- gcc/gimple-ssa-evrp.c.jj 2019-01-01 12:37:15.712998659 +0100
+++ gcc/gimple-ssa-evrp.c 2019-02-15 09:27:49.569441402 +0100
@@ -41,6 +41,7 @@ along with GCC; see the file COPYING3.
#include "tree-cfgcleanup.h"
#include "vr-values.h"
#include "gimple-ssa-evrp-analyze.h"
+#include "tree-dfa.h"
class evrp_folder : public substitute_and_fold_engine
{
@@ -307,6 +308,21 @@ execute_early_vrp ()
scev_initialize ();
calculate_dominance_info (CDI_DOMINATORS);
+ /* argc in main is never negative. */
+ if (MAIN_NAME_P (DECL_NAME (current_function_decl))
+ && DECL_ARGUMENTS (current_function_decl))
+ {
+ tree argc = DECL_ARGUMENTS (current_function_decl);
+ if (TYPE_MAIN_VARIANT (TREE_TYPE (argc)) == integer_type_node)
+ {
+ argc = ssa_default_def (cfun, argc);
+ if (argc && SSA_NAME_RANGE_INFO (argc) == NULL)
+ set_range_info (argc, VR_RANGE,
+ wi::zero (TYPE_PRECISION (integer_type_node)),
+ wi::to_wide (TYPE_MAX_VALUE (integer_type_node)));
+ }
+ }
+
/* Walk stmts in dominance order and propagate VRP. */
evrp_dom_walker walker;
walker.walk (ENTRY_BLOCK_PTR_FOR_FN (cfun));
(not really sure if it will work fine with Ada, it does some games with main).
That said, I bet the original package code didn't have the warning in main but
somewhere else.
>From gcc-bugs-return-633879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 08:39:21 2019
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Fri, 15 Feb 2019 08:39:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, e.g. C99 guarantees that:
"If they are declared, the parameters to the main function shall obey the
following constraints:
— The value of argc shall be nonnegative."
Similarly C++, http://eel.is/c++draft/basic.start.main
"The value of argc shall be non-negative."
So, we could do this, or perhaps add
lang_GNU_C () || lang_GNU_CXX () || lang_GNU_OBJC ()
check too, evrp is pre-IPA pass and thus it can check the defining language
easily.
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
> That said, I bet the original package code didn't have the warning in main
> but somewhere else.
Yes.
>From gcc-bugs-return-633881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 08:52:11 2019
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45727
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45727&action=edit
original test-case
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for analysis.
>
> The bogus warning can be avoided in the first case simply by punting on
> offsets that could be in the negative range, but almost certainly not
> without some false negatives.
Yes, I can confirm that adding a check for negative values can make
the warning gone.
> I'm not sure it's necessarily a good tradeoff
> (I don't know that it isn't either). Is this code representative of some
> wide-spread idiom?
I see it just in one package.
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45728
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gcc9-pr89350.patch
Untested patch for the argc range stuff.
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #6)
> > My reproducer described in the first comment was:
> > 1) build gcc trunk w/o bootstrap and install it
> > 2) use the compiler and build gcc-8 branch w/o bootstrap
> > 3) Ada FE is successfully built, but Ada runtime build fails (with gcc-8 Ada
> > FE)
>
> Sure, but the question is what happens if remove --disable-bootstrap from
> the configure line you posted?
It won't help. Note that my original reproducer was openSUSE package build
(which always uses bootstrap).
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fdumont at gcc dot gnu.org
Known to work| |6.4.0
Summary|Combining -std=c++14 and |[7/8/9 Regression]
|-std=c++17 objects gives |Combining -std=c++14 and
|ODR warnings |-std=c++17 objects gives
| |ODR warnings
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I see it starting with r243379, would it be possible culprit of that?
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Subject: [Bug rtl-optimization/66152] suboptimal load bytes to stack
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--- Comment #4 from SztfG at yandex dot ru ---
GCC from trunk doing this:
.Ltext0:
.LC0:
.string ""
.ascii "\001\002\003\004\005\006\007"
bar:
.LFB0:
sub rsp, 24
mov rax, QWORD PTR .LC0[rip]
lea rdi, [rsp+8]
mov QWORD PTR [rsp+8], rax
call foo
.LVL0:
add rsp, 24
ret
.LFE0:
instead movabsq $506097522914230528, %rax
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Subject: [Bug rtl-optimization/66152] suboptimal load bytes to stack
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That changed with r263511, which now treats the {0,1,2,3,4,5,6,7} initializer
like "\0\1\2\3\4\5\6\7", so that means even GCC 8 expanded the latter this way.
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Subject: [Bug tree-optimization/89360] New: GCC doesn't emit movcc instruction in some cases
Date: Fri, 15 Feb 2019 09:58:00 -0000
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Bug ID: 89360
Summary: GCC doesn't emit movcc instruction in some cases
Product: gcc
Version: 9.0
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Here are two function:
void sort2_ternary(int a, int b, int *pa, int *pb)
{
*pa = a < b ? a : b;
*pb = a < b ? b : a;
}
void sort2_if(int a, int b, int *pa, int *pb)
{
if (a < b) {
*pa = a;
*pb = b;
}
else
{
*pa = b;
*pb = a;
}
}
GCC does not emit CMOVcc (conditional move) on GCC 8.2 if we compile it as C++
code
https://godbolt.org/z/ytE0Ix
sort2_ternary(int, int, int*, int*):
cmp edi, esi
jge .L2
mov eax, edi
mov edi, esi
mov esi, eax
.L2:
mov DWORD PTR [rdx], esi
mov DWORD PTR [rcx], edi
ret
sort2_if(int, int, int*, int*):
cmp edi, esi
jge .L5
mov DWORD PTR [rdx], edi
mov DWORD PTR [rcx], esi
ret
.L5:
mov DWORD PTR [rdx], esi
mov DWORD PTR [rcx], edi
ret
but if compile it as C code, sort2_ternary have MOVcc:
sort2_ternary:
cmp esi, edi
mov eax, edi
cmovle eax, esi
cmovl esi, edi
mov DWORD PTR [rdx], eax
mov DWORD PTR [rcx], esi
ret
but sort2_if remains same.
On GCC trunk there is no difference between compiling this as C or C++ for
sort2_ternary(), but sort2_if() still doesn't have CMOVcc instruction in it for
both case.
Measuring cmov vs branch-mov performance: https://github.com/xiadz/cmov
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Subject: [Bug lto/45375] [meta-bug] Issues with building Mozilla (i.e. Firefox) with LTO
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Bug 45375 depends on bug 88858, which changed state.
Bug 88858 Summary: ICE in rtl_verify_fallthru, at cfgrtl.c:2930 in Firefox build with LTO and PGO
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88858
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug lto/88858] ICE in rtl_verify_fallthru, at cfgrtl.c:2930 in Firefox build with LTO and PGO
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.0
Resolution|--- |FIXED
Known to fail|7.4.0 |
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
GCC 7 branch is not affected, closing then.
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> It won't help. Note that my original reproducer was openSUSE package build
> (which always uses bootstrap).
Well, at least it would give some hint as to what goes wrong and whether this
is an issue in GCC 8 or GCC 9. Can you try with GCC 8 itself then?
>From gcc-bugs-return-633892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 10:13:08 2019
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That change introduces some differences between C++98 and later modes, but the
testcase use C++14 and C++17. There are no differences in the code. There's
certainly no difference between std::less<int> in the two modes.
Even so, we need to be able to make parts of the std::lib conditional on the
standard version, as long as the semantics remain the same. These warnings are
not helpful if they make users worry about harmless implementation details.
>From gcc-bugs-return-633893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 10:17:52 2019
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
Date: Fri, 15 Feb 2019 10:17:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I see this warning even when compiling preprocessed source that was all
produced using -std=c++14 (so the input source code is identical):
g++ -E main.cpp -o main.ii
g++ -E test.cpp -o test.ii
g++ -flto -c main.ii -std=c++17
g++ -flto -c test.ii
g++ -flto main.o test.o
/usr/include/c++/8/bits/stl_function.h:381:12: note: type ‘struct less’ itself
violates the C++ One Definition Rule
struct less : public binary_function<_Tp, _Tp, bool>
^
So this appears to be a difference introduced by the compiler, not the source
code. Either there's a compiler bug causing unwanted differences depending on
-sd options, or the warnings need to be suppressed because the differences are
intended.
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This shows it has nothing to do with r243379 at all:
template<typename _Arg1, typename _Arg2, typename _Result>
struct binary_function
{
typedef _Arg1 first_argument_type;
typedef _Arg2 second_argument_type;
typedef _Result result_type;
};
template<typename _Tp>
struct less : public binary_function<_Tp, _Tp, bool>
{
constexpr
bool
operator()(const _Tp& __x, const _Tp& __y) const
{ return __x < __y; }
};
int f(int i, int j);
#if __cplusplus < 201703L
int f(int i, int j)
{
return less<int>()(i, j);
}
#else
int main()
{
return less<int>()(3, 4) == f(2, 1);
}
#endif
g++ -flto -c src.cc
g++ -flto -c src.cc -std=c++17 -o src17.o
g++ -flto src.o src17.o
src.cc:10:10: warning: type ‘struct less’ violates the C++ One Definition Rule
[-Wodr]
struct less : public binary_function<_Tp, _Tp, bool>
^
src.cc:10:10: note: a type with different bases is defined in another
translation unit
struct less : public binary_function<_Tp, _Tp, bool>
^
src.cc:14:5: warning: ‘operator()’ violates the C++ One Definition Rule
[-Wodr]
operator()(const _Tp& __x, const _Tp& __y) const
^
src.cc:14:5: note: ‘operator()’ was previously declared here
operator()(const _Tp& __x, const _Tp& __y) const
^
This shows the exact same source code, compiled with -std=c++14 and -std=c++17,
and bogus warnings about different bases.
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Subject: [Bug rtl-optimization/66152] [9 Regression] suboptimal load bytes to stack
Date: Fri, 15 Feb 2019 10:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-15
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|suboptimal load bytes to |[9 Regression] suboptimal
|stack |load bytes to stack
Ever confirmed|0 |1
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That only happens if there is '\0' embedded in the created string before end.
Anyway, this makes it a regression.
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's true that the two bases are defined in different translation units, but
that's irrelevant. What the C++ language requires is that the definitions
consist of the same sequence of tokens, it doesn't matter which file they are
defined in. If I am allergic to headers it's perfectly fine to copy & paste the
same code into the top of every translation unit instead of using headers.
The relevant rule is http://eel.is/c++draft/basic.def.odr#12 and the example
above doesn't violate it.
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Taking just this code:
template<typename _Arg1, typename _Arg2, typename _Result>
struct binary_function
{
typedef _Arg1 first_argument_type;
typedef _Arg2 second_argument_type;
typedef _Result result_type;
};
template<typename _Tp>
struct less : public binary_function<_Tp, _Tp, bool>
{
constexpr
bool
operator()(const _Tp& __x, const _Tp& __y) const
{ return __x < __y; }
};
int f(int i, int j)
{
return less<int>()(i, j);
}
Compiling as C++14 and C++14 and comparing the -fdump-tree-original dumps I
see:
--- f.cc.003t.original.14 2019-02-15 10:43:10.841906030 +0000
+++ f.cc.003t.original.17 2019-02-15 10:43:15.442914718 +0000
@@ -10,5 +10,5 @@
;; enabled by -tree-original
-<<cleanup_point return <retval> = (int) less<int>::operator() (&TARGET_EXPR
<D.2458, {}>, (const int &) &i, (const int &) &j)>>;
+<<cleanup_point return <retval> = (int) less<int>::operator() (&TARGET_EXPR
<D.2229, {.D.2170={}}>, (const int &) &i, (const int &) &j)>>;
So the generated code is slightly different when using -std=c++17, would that
cause -Wodr to complain?
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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--- Comment #11 from rdapp at linux dot ibm.com ---
Ping.
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Subject: [Bug rtl-optimization/89242] [7 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Fri, 15 Feb 2019 10:59:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Feb 15 10:59:02 2019
New Revision: 268938
URL: https://gcc.gnu.org/viewcvs?rev=268938&root=gcc&view=rev
Log:
Backport r268873
2019-02-15 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* dce.c (delete_unmarked_insns): Call free_dominance_info we
process a transformation.
2019-02-15 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-14 Martin Liska <mliska@suse.cz>
PR rtl-optimization/89242
* g++.dg/pr89242.C: New test.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/dce.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/89009] [7 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
Date: Fri, 15 Feb 2019 10:59:00 -0000
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--- Comment #17 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Feb 15 10:58:49 2019
New Revision: 268937
URL: https://gcc.gnu.org/viewcvs?rev=268937&root=gcc&view=rev
Log:
Backport r268762
2019-02-15 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* ipa-cp.c (build_toporder_info): Remove usage of a param.
* ipa-inline.c (inline_small_functions): Likewise.
* ipa-pure-const.c (propagate_pure_const): Likewise.
(propagate_nothrow): Likewise.
* ipa-reference.c (propagate): Likewise.
* ipa-utils.c (struct searchc_env): Remove unused field.
(searchc): Always search across AVAIL_INTERPOSABLE.
(ipa_reduced_postorder): Always allow AVAIL_INTERPOSABLE as
the only called IPA pure const can properly not propagate
across interposable boundary.
* ipa-utils.h (ipa_reduced_postorder): Remove param.
2019-02-15 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-02-11 Martin Liska <mliska@suse.cz>
PR ipa/89009
* g++.dg/ipa/pr89009.C: New test.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/ipa-cp.c
branches/gcc-7-branch/gcc/ipa-inline.c
branches/gcc-7-branch/gcc/ipa-pure-const.c
branches/gcc-7-branch/gcc/ipa-reference.c
branches/gcc-7-branch/gcc/ipa-utils.c
branches/gcc-7-branch/gcc/ipa-utils.h
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/89009] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |7.4.0
Summary|[7 Regression] |Miscompilation (missing
|Miscompilation (missing |function call) with
|function call) with |-fvisibility=hidden -fpic
|-fvisibility=hidden -fpic |-O2 -fno-inline
|-O2 -fno-inline |
Known to fail|7.4.0 |
--- Comment #18 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on all active branches.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89242] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Fri, 15 Feb 2019 11:01:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
Summary|[7 Regression] ICE in |ICE in verify_dominators,
|verify_dominators, at |at dominance.c:1184 (error:
|dominance.c:1184 (error: |dominator of 7 should be 5,
|dominator of 7 should be 5, |not 2)
|not 2) |
Known to fail|7.4.0 |
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on all active branches.
>From gcc-bugs-return-633903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:02:38 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
Date: Fri, 15 Feb 2019 11:02:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #8)
> > It won't help. Note that my original reproducer was openSUSE package build
> > (which always uses bootstrap).
>
> Well, at least it would give some hint as to what goes wrong and whether
> this is an issue in GCC 8 or GCC 9. Can you try with GCC 8 itself then?
Building gcc 8 with gcc 8 is fine.
Can you please Eric try to reproduce that locally?
>From gcc-bugs-return-633904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:07:23 2019
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Subject: [Bug ada/89349] raised STORAGE_ERROR : stack overflow or erroneous memory access when building GCC 8 branch with GCC master
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--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Building gcc 8 with gcc 8 is fine.
OK, thanks.
> Can you please Eric try to reproduce that locally?
Sure, as soon as the compiler builds again for me...
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01155.html
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Subject: [Bug rtl-optimization/66152] [9 Regression] suboptimal load bytes to stack
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45729
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45729&action=edit
gcc9-pr66152.patch
Untested fix to handle '\0's embedded at the start of in the middle of
STRING_CSTs when storing it into memory.
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |needs-bisection,
| |needs-reduction
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm trying to creduce that..
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords|needs-reduction |
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
So I ended up with:
--- 1.ii ---
struct a {};
struct b : a {
} c;
--- 2.ii ---
cat 2.ii
struct a {};
struct b : a {
} c2;
$ g++ -flto -c -std=c++14 1.ii && g++ -flto -c -std=c++17 2.ii && g++ [12].o
-shared
1.ii:2:8: warning: type ‘struct b’ violates the C++ One Definition Rule [-Wodr]
struct b : a {
^
2.ii:2:8: note: a type with different bases is defined in another translation
unit
struct b : a {
^
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|needs-bisection |
CC| |hubicka at gcc dot gnu.org,
| |jason at gcc dot gnu.org
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r241187.
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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--- Comment #14 from Mark Wielaard <mark at gcc dot gnu.org> ---
(In reply to Mark Wielaard from comment #12)
> (In reply to Martin Sebor from comment #11)
> > Ah, but you mentioned elfutilts, not binutils. I've now downloaded and
> > built elfutils-0.175. It took a bit more effort because --disable-werror
> > doesn't work there but once I got past that I just got the three
> > -Wformat-truncation instances below:
> >
> > Diagnostic Count Unique Files
> > -Wformat-truncation= 3 3 2
> >
> > -Wformat-truncation Instances:
> > /src/elfutils-0.175/src/ar.c:1468
> > /src/elfutils-0.175/src/ar.c:859
> > /src/elfutils-0.175/src/arlib.c:63
>
> I am not seeing these, but they might have been fixed in git. We like to
> keep the code warning free since we always build with -Werror.
Aha, I now see, you are using -Wformat-truncation=2. Then yes, these snprintfs
formats could produce more characters than would fit in the given buffer/size.
But that is kind of the point of the code, that we don't overflow the given
buffer. The snprintf is supposed to truncate to what would fit in these cases.
I can see if I could come up with something smarter to detect this without
using snprintf, but that seems to defeat the point of using snprintf. So for
now we just don't use -Wformat-truncation=2. (Background, ar files are weird,
they use fixed size character fields for numbers as decimal strings without a
zero terminator, but right padded with spaces.)
The specific warnings which we enable can be found in config/eu.am and depend
on some configure checks to make sure gcc supports them:
AM_CFLAGS = -std=gnu99 -Wall -Wshadow -Wformat=2 \
-Wold-style-definition -Wstrict-prototypes -Wtrampolines \
$(LOGICAL_OP_WARNING) $(DUPLICATED_COND_WARNING) \
$(NULL_DEREFERENCE_WARNING) $(IMPLICIT_FALLTHROUGH_WARNING) \
$(if $($(*F)_no_Werror),,-Werror) \
$(if $($(*F)_no_Wunused),,-Wunused -Wextra) \
$(if $($(*F)_no_Wstack_usage),,$(STACK_USAGE_WARNING)) \
$(if $($(*F)_no_Wpacked_not_aligned),-Wno-packed-not-aligned,) \
$($(*F)_CFLAGS)
With the following (if supported):
STACK_USAGE_WARNING=-Wstack-usage=262144
LOGICAL_OP_WARNING=-Wlogical-op
DUPLICATED_COND_WARNING=-Wduplicated-cond
NULL_DEREFERENCE_WARNING=-Wnull-dereference
IMPLICIT_FALLTHROUGH_WARNING=-Wimplicit-fallthrough=5
As you can see individual files can turn off some of these if necessary in the
Makefile by adding file_no_Wxxx. So the easiest way to see which warnings are
used it by running make V=1 which for this specific case gives (note the -m32
since I am running this on x86_64):
gcc -D_GNU_SOURCE -DHAVE_CONFIG_H -DLOCALEDIR='"/usr/local/share/locale"'
-DDEBUGPRED=0 -DSRCDIR=\"/home/mark/src/elfutils/src\"
-DOBJDIR=\"/opt/local/build/elfutils-obj/src\" -I.
-I/home/mark/src/elfutils/src -I.. -I. -I/home/mark/src/elfutils/src
-I/home/mark/src/elfutils/lib -I.. -I/home/mark/src/elfutils/src/../libelf
-I/home/mark/src/elfutils/src/../libebl -I/home/mark/src/elfutils/src/../libdw
-I/home/mark/src/elfutils/src/../libdwelf
-I/home/mark/src/elfutils/src/../libdwfl
-I/home/mark/src/elfutils/src/../libasm -std=gnu99 -Wall -Wshadow -Wformat=2
-Wold-style-definition -Wstrict-prototypes -Wtrampolines -Wlogical-op
-Wduplicated-cond -Wnull-dereference -Wimplicit-fallthrough=5 -Werror -Wunused
-Wextra -D_FORTIFY_SOURCE=2 -m32 -g -O2 -DBAD_FTS=1 -MT readelf.o -MD -MP
-MF .deps/readelf.Tpo -c -o readelf.o /home/mark/src/elfutils/src/readelf.c
/home/mark/src/elfutils/src/readelf.c: In function ‘print_debug_str_section’:
/home/mark/src/elfutils/src/readelf.c:10167:15: error: ‘%*llx’ directive output
between 4 and 2147483647 bytes may cause result to exceed ‘INT_MAX’
[-Werror=format-overflow=]
10167 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
| ^~~~~~
/home/mark/src/elfutils/src/readelf.c:10167:18: note: format string is defined
here
10167 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
/home/mark/src/elfutils/src/readelf.c:10167:15: note: directive argument in the
range [0, 18446744073709551614]
10167 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
| ^~~~~~
cc1: all warnings being treated as errors
>From gcc-bugs-return-633910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:53:56 2019
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
Date: Fri, 15 Feb 2019 11:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89358
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I will take a look. I suppose the representation of classes differs based on
std setting and that makes the ODR verifier to think they are different.
>From gcc-bugs-return-633911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:55:50 2019
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Subject: [Bug c/87210] [RFE] introduce build time options to zero initialize automatic stack variables
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--- Comment #3 from P J P <pjp at fedoraproject dot org> ---
Similar options under review for LLVM
-> https://lists.llvm.org/pipermail/cfe-dev/2018-November/060172.html
>From gcc-bugs-return-633913-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:56:31 2019
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Subject: [Bug target/89361] [7/8/9 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89361
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |krebbel at gcc dot gnu.org
Target Milestone|--- |7.5
>From gcc-bugs-return-633912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 11:56:16 2019
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Subject: [Bug target/89361] New: [7/8/9 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
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Bug ID: 89361
Summary: [7/8/9 Regression] s390 broken without
S390_USE_TARGET_ATTRIBUTE, likely since r257489
Product: gcc
Version: 9.0
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When configuring s390x-linux with old binutils or without binutils, when
HAVE_AS_MACHINE_MACHINEMODE is not defined, the resulting compiler is totally
broken.
The problem is that s390_indirect_branch_settings is never called in that case,
so cfun->machine->indirect_branch_{jump,call} and
cfun->machine->function_return_{reg,mem} are indirect_branch_unset / 0 and thus
it emits unconditionally the indirect branch stuff, regardless of what options
user actually used.
>From gcc-bugs-return-633914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 12:34:35 2019
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, it adds an artificial field like:
<field_decl 0x7fffea901a18 D.2070
type <record_type 0x7fffea939bd0 BLK
size <integer_cst 0x7fffea7f5ea0 constant 0>
unit-size <integer_cst 0x7fffea7f5e58 constant 0>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffea939bd0 context <record_type 0x7fffea939a80 a>>
ignored decl_6 QI pr89358.c:2:8 size <integer_cst 0x7fffea7f5e58 0>
unit-size <integer_cst 0x7fffea7f5e58 0>
align:8 warn_if_not_align:0 offset_align 8 offset <integer_cst
0x7fffea7f5e58 0> bit-offset <integer_cst 0x7fffea7f5ea0 0> context
<record_type 0x7fffea939c78 b> chain <type_decl 0x7fffea901980 b>>
DECL_FIELD_IS_BASE is lost after free-lang-data I'd say, so what LTO ODR
checking could look for is FIELD_DECL is NULL DECL_NAME, DECL_ARTIFICIAL,
DECL_IGNORED_P with size_zero_node DECL_SIZE and ignore those if missing just
in one case?
>From gcc-bugs-return-633915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 12:38:28 2019
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libbacktrace/89362] New: [8/9 regression] zlib support breaks libbacktrace on strict-alignment platforms
Date: Fri, 15 Feb 2019 12:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89362
Bug ID: 89362
Summary: [8/9 regression] zlib support breaks libbacktrace on
strict-alignment platforms
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: major
Priority: P3
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The new zlib support (PR other/67165) has broken the library on
strict-alignment platforms, for example SPARC64/Linux. Here's a typical ICE
report:
ebotcazou@gcc202:~/build$ gcc/cc1 -quiet pr35318.c -m32 -mcpu=ultrasparc
pr35318.c: In function 'foo':
pr35318.c:9:1: error: unrecognizable insn:
9 | }
| ^
(insn 14 28 29 2 (parallel [
(set (reg:DF 10 %o2 [orig:113 x ] [113])
(asm_operands/v:DF ("") ("=r,r") 0 [
(reg:SI 11 %o3 [orig:113 x+4 ] [113])
(mem/c:DF (plus:SI (reg/f:SI 30 %fp)
(const_int -24 [0xffffffffffffffe8])) [3
%sfp+-24 S8 A64])
]
[
(asm_input:DF ("%0,0") pr35318.c:8)
(asm_input:SI ("m,r") pr35318.c:8)
]
[] pr35318.c:8))
(set (reg:DF 2 %g2 [orig:114 y ] [114])
(asm_operands/v:DF ("") ("=r,r") 1 [
(reg:SI 11 %o3 [orig:113 x+4 ] [113])
(mem/c:DF (plus:SI (reg/f:SI 30 %fp)
(const_int -24 [0xffffffffffffffe8])) [3
%sfp+-24 S8 A64])
]
[
(asm_input:DF ("%0,0") pr35318.c:8)
(asm_input:SI ("m,r") pr35318.c:8)
]
[] pr35318.c:8))
]) "pr35318.c":8:3 -1
(nil))
during RTL pass: reload
during RTL pass: reload
pr35318.c:9:1: internal compiler error: in extract_constrain_insn, at
recog.c:2211
pr35318.c:9:1: internal compiler error: Bus error
Bus error
Program received signal SIGBUS, Bus error.
0x0000010000138ab4 in elf_uncompress_chdr (state=0xfff8000100044000,
compressed=0xfff8000104ca48af "", compressed_size=4074875,
zdebug_table=0xfff800010353e000, error_callback=
0x1000011dfc4 <__sanitizer::(anonymous namespace)::ErrorCallback(void*,
char const*, int)>, data=0x7feffffd5b8, uncompressed=0x7feffffc670,
uncompressed_size=0x7feffffc668)
at
/home/ebotcazou/src/libsanitizer/libbacktrace/../../libbacktrace/elf.c:2580
2580 if (chdr->ch_type != ELFCOMPRESS_ZLIB)
The problem is that most debug sections have alignment 1 so you cannot do:
chdr = (const b_elf_chdr *) compressed;
and expect to have a valid b_elf_chdr on strict-alignment platforms.
This also breaks the sanitizer on these platforms.
>From gcc-bugs-return-633916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 12:58:46 2019
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Fri, 15 Feb 2019 12:58:00 -0000
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--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Created attachment 45730
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45730&action=edit
Untested fix
I'm testing the attached fix.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/82364] [7 Regression] Enormous memory usage when building for 32bit i386 with >= -O1
Date: Fri, 15 Feb 2019 13:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82364
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |marxin at gcc dot gnu.org
Known to work|6.4.0 |8.2.0, 9.0
Known to fail| |6.4.0
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in r251412 which is a revision where I introduced switch
expansion as a GIMPLE pass.
>From gcc-bugs-return-633918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 13:21:48 2019
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Subject: [Bug target/89361] [7/8/9 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
Date: Fri, 15 Feb 2019 13:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89361
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-15
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Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45731
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45731&action=edit
gcc9-pr89361.patch
Untested fix.
>From gcc-bugs-return-633919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 13:22:46 2019
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Subject: [Bug middle-end/82364] [7 Regression] Enormous memory usage when building for 32bit i386 with >= -O1
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Started probably in r228194 (change from 400MB -> 1400MB RAM usage).
>From gcc-bugs-return-633920-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 13:37:30 2019
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Subject: [Bug target/84616] funsafe-math-optimizations leads to incorrect results for 4x4 matrix inversion
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
The issues is gone after r255474.
>From gcc-bugs-return-633921-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 14:16:55 2019
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89363] New: RANK incorrect for unallocated allocatable
Date: Fri, 15 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89363
Bug ID: 89363
Summary: RANK incorrect for unallocated allocatable
Product: gcc
Version: unknown
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Priority: P3
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Created attachment 45732
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45732&action=edit
test code
The attached program compiles without complaints using gfortran 9.0 trunk
build, but delivers an incorrect value for the RANK() intrinsic if the dummy is
declared with assumed RANK and the ALLOCATABLE attribute, and the actual
argument has the status "not allocated".
Instead of "2", values are returned that change from run to run.
>From gcc-bugs-return-633922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 14:17:48 2019
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Fri, 15 Feb 2019 14:17:00 -0000
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45733
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45733&action=edit
Follow up patch that releases memory
Survives GCC LTO bootstrap and can build Inkscape with LTO.
>From gcc-bugs-return-633923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 14:25:31 2019
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Subject: [Bug fortran/89364] New: Assumed rank object with incorrect values for shape and bounds
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89364
Bug ID: 89364
Summary: Assumed rank object with incorrect values for shape
and bounds
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 45734
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45734&action=edit
test code
The attached code compiles without complaints with gfortran 9.0 trunk, but
produces incorrect values for the SHAPE, LBOUND and UBOUND intrinsics on the
last dimension if the actual argument is an assumed-size array.
>From gcc-bugs-return-633924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 14:31:07 2019
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Fri, 15 Feb 2019 14:31:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Assignee|hubicka at gcc dot gnu.org |jamborm at gcc dot gnu.org
--- Comment #8 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I have proposed the fix on the mailing list:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01225.html
>From gcc-bugs-return-633925-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 14:34:40 2019
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 15 Feb 2019 14:34:00 -0000
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--- Comment #12 from Ian Lance Taylor <ian at airs dot com> ---
Sorry for the delay, will look at the patch now.
You can test a single target libgo target by using make to build the /check
target. For example, to test the bytes package, cd to the libgo build
directory and run "make bytes/check".
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89365] New: Inquiry functions for assumed rank objects fail
Date: Fri, 15 Feb 2019 14:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89365
Bug ID: 89365
Summary: Inquiry functions for assumed rank objects fail
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: Bader at lrz dot de
Target Milestone: ---
Created attachment 45735
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45735&action=edit
test code
The attached test code produces failures for the SHAPE, LBOUND and UBOUND
intrinsics when applied to assumed-rank objects with the POINTER or ALLOCATABLE
attribute. Note that for these cases the behaviour should be as for
deferred-shape objects.
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89366] New: Fails to compile BIND(C) interface with assumed-length character argument
Date: Fri, 15 Feb 2019 14:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89366
Bug ID: 89366
Summary: Fails to compile BIND(C) interface with assumed-length
character argument
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Created attachment 45736
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45736&action=edit
test code
The extensions in C interop imply that an assumed-length character dummy
argument can appear in a BIND(C) interface, and is mapped to a C descriptor.
However, the attached test code fails to compile with the following error
message:
assumed_length_01_pos.f90:12:35:
12 | subroutine process_string(this, ierr) BIND(C)
| 1
Error: Character argument ?this? at (1) must be length 1 because procedure
?process_string? is BIND(C)
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From: "ian at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 15 Feb 2019 14:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89123
--- Comment #13 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Feb 15 14:51:10 2019
New Revision: 268941
URL: https://gcc.gnu.org/viewcvs?rev=268941&root=gcc&view=rev
Log:
PR go/89123
internal/cpu, runtime: add S/390 CPU capability support
Patch by Robin Dapp.
Updates https://gcc.gnu.org/PR89123
Reviewed-on: https://go-review.googlesource.com/c/162887
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/internal/cpu/cpu_gccgo.c
trunk/libgo/go/internal/cpu/cpu_s390x.go
trunk/libgo/go/runtime/os_linux_s390x.go
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84616] funsafe-math-optimizations leads to incorrect results for 4x4 matrix inversion
Date: Fri, 15 Feb 2019 14:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84616
--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 15, 2019 2:37:25 PM GMT+01:00, "marxin at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84616
>
>Martin Liška <marxin at gcc dot gnu.org> changed:
>
> What |Removed |Added
>----------------------------------------------------------------------------
> CC| |marxin at gcc dot gnu.org
>
>--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
>The issues is gone after r255474.
Likely latent. The rev. Shouldn't have affected code generation.
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 15 Feb 2019 14:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89123
--- Comment #14 from Ian Lance Taylor <ian at airs dot com> ---
OK, patch committed. Should we leave this bug report open?
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From: "rafael at espindo dot la" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
Date: Fri, 15 Feb 2019 15:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89337
--- Comment #10 from Rafael Avila de Espindola <rafael at espindo dot la> ---
(In reply to Martin Sebor from comment #9)
> The warning is very simple: it just looks for excessive sizes in calls
> emitted in the optimized IL. When the call is there (either because it's in
> the source code as is or because it's been synthesized by GCC based on the
> invariants it can infer from the code) it triggers. It runs after all
> high-level optimizations, including DCE, and assumes that if the statement
> is in the IL it is reachable. Compiling the test case with
> -fdump-tree-optimized=/dev/stdout shows the GIMPLE the warning works with:
>
> <bb 20> [local count: 233860936]:
> # iftmp.6_113 = PHI <iftmp.6_112(19), &D.3395.u.internal.str(18)>
> memset (iftmp.6_113, 0, 18446744073709551613);
>
> I think the issue can essentially be reduced to the following:
>
> $ cat z.c && gcc -O2 -S -fdump-tree-optimized=/dev/stdout z.c
> void f (char *d, const char *s)
> {
> if (__builtin_strstr (s, "ABC"))
> {
> __SIZE_TYPE__ n = __builtin_strlen (s) - 3;
>
> if (n > __builtin_strlen (s)) // cannot be true
> __builtin_memset (d, 0, n - __builtin_strlen (s));
> }
> }
>
> ;; Function f (f, funcdef_no=0, decl_uid=1907, cgraph_uid=1, symbol_order=0)
>
> Removing basic block 6
> Removing basic block 7
> f (char * d, const char * s)
> {
> char * _1;
> long unsigned int _2;
>
> <bb 2> [local count: 1073741824]:
> _1 = __builtin_strstr (s_5(D), "ABC");
> if (_1 != 0B)
> goto <bb 3>; [70.00%]
> else
> goto <bb 5>; [30.00%]
>
> <bb 3> [local count: 751619278]:
> _2 = __builtin_strlen (s_5(D));
> if (_2 <= 2)
> goto <bb 4>; [33.00%]
> else
> goto <bb 5>; [67.00%]
>
> <bb 4> [local count: 248034361]:
> __builtin_memset (d_6(D), 0, 18446744073709551613); [tail call]
>
> <bb 5> [local count: 1073741824]:
> return;
>
> }
>
>
> z.c: In function ‘f’:
> z.c:8:9: warning: ‘__builtin_memset’ specified size 18446744073709551613
> exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
> 8 | __builtin_memset (d, 0, n - __builtin_strlen (s));
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> GCC doesn't have the smarts to figure out that when s contains a substring
> of length 3 then strlen(s) must be at least 3. As a result, it doesn't
> eliminate the memset call in the function and the warning triggers. Suppose
> we teach GCC how to figure this out from the strstr call (which might be a
> useful optimization) and then someone comes along with a test case that uses
> strspn() instead of strstr(). We can also teach GCC about strstr() but then
> someone else might use regcomp() or some user-defined function that we won't
> have access to. At some point we'll have to call it good enough.
Absolutely, this is the halting problem after all.
The question is not to give up or not, it is whether to warn when we do. If we
do, we get potential warnings every time gcc gives up on solving the halting
problem.
The uninitialized variable warning was at least split in two, one for the cases
where gcc is not sure.
Maybe we should have a general flag that disables all warnings where gcc cannot
prove that there is a path from a function entry to the broken statement?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/88308] ICE in maybe_record_trace_start, at dwarf2cfi.c:2309
Date: Fri, 15 Feb 2019 15:42:00 -0000
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--- Comment #6 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Fri Feb 15 15:41:25 2019
New Revision: 268942
URL: https://gcc.gnu.org/viewcvs?rev=268942&root=gcc&view=rev
Log:
2019-02-15 Aaron Sawdey <acsawdey@linux.ibm.com>
PR rtl-optimization/88308
* shrink-wrap.c (move_insn_for_shrink_wrap): Fix LABEL_NUSES counts
on copied instruction.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/shrink-wrap.c
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Subject: [Bug rtl-optimization/88308] ICE in maybe_record_trace_start, at dwarf2cfi.c:2309
Date: Fri, 15 Feb 2019 15:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88308
acsawdey at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from acsawdey at gcc dot gnu.org ---
Fixed in trunk.
>From gcc-bugs-return-633934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 15:44:49 2019
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From: "frank.secilia at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89367] New: Constexpr expression is not constexpr in template, but is constexpr in non-template.
Date: Fri, 15 Feb 2019 15:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89367
Bug ID: 89367
Summary: Constexpr expression is not constexpr in template, but
is constexpr in non-template.
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: frank.secilia at gmail dot com
Target Milestone: ---
Created attachment 45737
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45737&action=edit
minimal preprocessed test case
Morning, folks!
I'm trying to make compile-time type ids. It's based on the fact that per-type
static instances have unique addresses. I'm using those addresses as the type
id.
Originally, I figured this wouldn't work because taking the address of
something couldn't be constexpr, but the address of a variable is known at
compile time, so I gave it a try. g++ accepts it for a non-template type, but
not if the type is a template.
Attached is a preprocessed minimal test case, but here is something slightly
more verbose with a few comments:
// Concrete type with unique, per-type constexpr id.
struct type_1
{
static constexpr char const unique_address{};
static constexpr void const* const id{&unique_address};
};
constexpr char const type_1::unique_address;
constexpr void const* const type_1::id;
// Another concrete type with same.
struct type_2
{
static constexpr char const unique_address{};
static constexpr void const* const id{&unique_address};
};
constexpr char const type_2::unique_address;
constexpr void const* const type_2::id;
// Types have different ids and these evaluate at compile time, as expected.
static_assert(type_1::id != type_2::id);
// Same, but in a template.
template <typename wrapped>
struct type_id
{
static constexpr char const unique_address{};
static constexpr void const* const id{&unique_address};
};
template <typename wrapped>
constexpr char const type_id<wrapped>::unique_address;
template <typename wrapped>
constexpr void const* const type_id<wrapped>::id;
// This does not compile.
static_assert(type_id<int>::id != type_id<float>::id);
The reasons I think this is a bug is because the only difference between the
succeeding and failing case is that the failing case is templated, and because
this works on clang.
I posted about this on stack overflow here
https://stackoverflow.com/questions/43955536/constexpr-unique-id-compiles-with-clang-but-not-with-gcc.
The simpler example at the bottom is missing a const on the out-of-line
definitions, but the behavior is the same with or without them.
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
Date: Fri, 15 Feb 2019 15:46:00 -0000
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--- Comment #1 from Frank Secilia <frank.secilia at gmail dot com> ---
Created attachment 45738
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45738&action=edit
verbose compiler output
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From: "frank.secilia at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
Date: Fri, 15 Feb 2019 15:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89367
--- Comment #2 from Frank Secilia <frank.secilia at gmail dot com> ---
I searched for existing bugs. I don't know the codebase, but I think it may be
another repro case for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53181.
>From gcc-bugs-return-633937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 17:03:52 2019
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89368] New: [9 regression] ICE in go/gofrontend/expressions.cc:4669 after r268923
Date: Fri, 15 Feb 2019 17:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89368
Bug ID: 89368
Summary: [9 regression] ICE in
go/gofrontend/expressions.cc:4669 after r268923
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: seurer at gcc dot gnu.org
CC: cmang at google dot com
Target Milestone: ---
r268922 builds fine but starting with 268923 a bootstrap build ICEs with
libtool: compile: /home/seurer/gcc/build/gcc-test2/./gcc/gccgo
-B/home/seurer/gcc/build/gcc-test2/./gcc/
-B/home/seurer/gcc/install/gcc-test2/powerpc64-unknown-linux-gnu/bin/
-B/home/seurer/gcc/install/gcc-test2/powerpc64-unknown-linux-gnu/lib/ -isystem
/home/seurer/gcc/install/gcc-test2/powerpc64-unknown-linux-gnu/include -isystem
/home/seurer/gcc/install/gcc-test2/powerpc64-unknown-linux-gnu/sys-include -O2
-g -I . -c -fgo-pkgpath=runtime -fgo-c-header=runtime.inc.raw
-fgo-compiling-runtime /home/seurer/gcc/gcc-test2/libgo/go/runtime/alg.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/atomic_pointer.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/cgo_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/cgocall.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/cgocheck.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/chan.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/compiler.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/cpuprof.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/cputicks.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/debug.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/env_posix.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/error.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/extern.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/fastlog2.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/fastlog2table.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/ffi.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/float.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/hash64.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/heapdump.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/iface.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/lfstack.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/lfstack_64bit.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/lock_futex.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/malloc.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/map.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/map_fast32.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/map_fast64.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/map_faststr.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mbarrier.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mbitmap.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mcache.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mcentral.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mem_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mfinal.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mfixalloc.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgc.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgc_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgclarge.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgcmark.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgcsweep.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgcsweepbuf.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mgcwork.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mheap.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mprof.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/msan0.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/msize.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mstats.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/mwbbuf.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/netpoll.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/netpoll_epoll.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/os_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/os_linux.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/os_linux_ppc64x.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/panic.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/print.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/proc.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/profbuf.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/proflabel.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/race0.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/rdebug.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/relax_stub.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/runtime.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/runtime1.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/runtime2.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/rwmutex.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/select.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/sema.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/signal_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/signal_sighandler.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/signal_unix.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/sigqueue.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/sizeclasses.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/slice.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/string.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/stubs.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/stubs2.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/stubs3.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/stubs_linux.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/symtab.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/time.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/timestub.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/timestub2.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/trace.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/traceback_gccgo.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/type.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/typekind.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/unaligned1.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/utf8.go
/home/seurer/gcc/gcc-test2/libgo/go/runtime/write_err.go runtime_sysinfo.go
sigtab.go -fPIC -o .libs/runtime.o
go1: internal compiler error: in do_get_backend, at
go/gofrontend/expressions.cc:4669
0x102f7ebf Unary_expression::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/expressions.cc:4669
0x102d29e7 Expression::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/expressions.cc:452
0x102dbcaf Expression::comparison(Translate_context*, Type*, Operator,
Expression*, Expression*, Location)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/expressions.cc:6777
0x102e7667 Binary_expression::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/expressions.cc:6233
0x102d29e7 Expression::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/expressions.cc:452
0x103876c3 If_statement::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:3234
0x1038c097 Statement::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:184
0x103356cf Block::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:6682
0x10386f3b Block_statement::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:1860
0x1038c097 Statement::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:184
0x103356cf Block::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:6682
0x10386f3b Block_statement::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:1860
0x1038c097 Statement::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:184
0x103356cf Block::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:6682
0x10386f3b Block_statement::do_get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:1860
0x1038c097 Statement::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/statements.cc:184
0x103356cf Block::get_backend(Translate_context*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:6682
0x1033847f Function::build(Gogo*, Named_object*)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:6157
0x1033b53f Named_object::get_backend(Gogo*, std::vector<Bexpression*,
std::allocator<Bexpression*> >&, std::vector<Btype*, std::allocator<Btype*> >&,
std::vector<Bfunction*, std::allocator<Bfunction*> >&)
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:8244
0x103461af Gogo::write_globals()
/home/seurer/gcc/gcc-test2/gcc/go/gofrontend/gogo.cc:1458
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88512] Too much STL in error output
Date: Fri, 15 Feb 2019 17:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88512
--- Comment #8 from Jonny Grant <jg at jguk dot org> ---
Another example. 9 line file. Gives 48 lines of STL warnings... G++ only
needs to say something clear:
"error: std::string 'str' is const, and as such insert() method cannot be
called"
// g++ -Wall -c -o int int.cpp
#include <string>
int main()
{
const std::string str ="abc"; // NB. This 'str' should not be const
const std::string str2 ="1 ";
str.insert(4, str2);
return str.size();
}
G++8 output:
$ g++-8 -Wall -c -o int int.cpp
int.cpp: In function ‘int main()’:
int.cpp:13:21: error: no matching function for call to
‘std::__cxx11::basic_string<char>::insert(int, const string&) const’
str.insert(4, str2);
^
In file included from /usr/include/c++/8/string:52,
from int.cpp:3:
/usr/include/c++/8/bits/basic_string.h:1524:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::const_iterator, std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::size_type, _CharT) [with _CharT = char; _Traits =
std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::const_iterator =
__gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer =
const char*; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type =
long unsigned int]’
insert(const_iterator __p, size_type __n, _CharT __c)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1524:7: note: candidate expects 3
arguments, 2 provided
/usr/include/c++/8/bits/basic_string.h:1568:9: note: candidate: ‘template<class
_InputIterator, class> std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::const_iterator, _InputIterator, _InputIterator) [with _InputIterator =
_InputIterator; <template-parameter-2-2> = <template-parameter-1-2>; _CharT =
char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’
insert(const_iterator __p, _InputIterator __beg, _InputIterator __end)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1568:9: note: template argument
deduction/substitution failed:
int.cpp:13:21: note: candidate expects 3 arguments, 2 provided
str.insert(4, str2);
^
In file included from /usr/include/c++/8/string:52,
from int.cpp:3:
/usr/include/c++/8/bits/basic_string.h:1602:7: note: candidate: ‘void
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator,
std::initializer_list<_Tp>) [with _CharT = char; _Traits =
std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*]’
insert(iterator __p, initializer_list<_CharT> __l)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1602:7: note: no known conversion for
argument 1 from ‘int’ to ‘std::__cxx11::basic_string<char>::iterator’ {aka
‘__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >’}
/usr/include/c++/8/bits/basic_string.h:1622:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT =
char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned
int]’ <near match>
insert(size_type __pos1, const basic_string& __str)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1622:7: note: passing ‘const string*’
{aka ‘const std::__cxx11::basic_string<char>*’} as ‘this’ argument discards
qualifiers
/usr/include/c++/8/bits/basic_string.h:1645:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&,
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type) [with _CharT =
char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned
int]’
insert(size_type __pos1, const basic_string& __str,
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1645:7: note: candidate expects 4
arguments, 2 provided
/usr/include/c++/8/bits/basic_string.h:1668:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
const _CharT*, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type)
[with _CharT = char; _Traits = std::char_traits<char>; _Alloc =
std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::size_type = long unsigned int]’
insert(size_type __pos, const _CharT* __s, size_type __n)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1668:7: note: candidate expects 3
arguments, 2 provided
/usr/include/c++/8/bits/basic_string.h:1687:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
const _CharT*) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc =
std::allocator<char>; std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::size_type = long unsigned int]’
insert(size_type __pos, const _CharT* __s)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1687:7: note: no known conversion for
argument 2 from ‘const string’ {aka ‘const std::__cxx11::basic_string<char>’}
to ‘const char*’
/usr/include/c++/8/bits/basic_string.h:1711:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type,
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type, _CharT) [with
_CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned
int]’
insert(size_type __pos, size_type __n, _CharT __c)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1711:7: note: candidate expects 3
arguments, 2 provided
/usr/include/c++/8/bits/basic_string.h:1729:7: note: candidate:
‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::__const_iterator, _CharT) [with _CharT = char; _Traits =
std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator =
__gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer =
const char*]’
insert(__const_iterator __p, _CharT __c)
^~~~~~
/usr/include/c++/8/bits/basic_string.h:1729:7: note: no known conversion for
argument 1 from ‘int’ to ‘std::__cxx11::basic_string<char>::__const_iterator’
{aka ‘__gnu_cxx::__normal_iterator<const char*,
std::__cxx11::basic_string<char> >’}
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/85711] [8 regression] ICE in aarch64_classify_address, at config/aarch64/aarch64.c:5678
Date: Fri, 15 Feb 2019 17:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85711
Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-15
CC| |wilco at gcc dot gnu.org
Summary|ICE in |[8 regression] ICE in
|aarch64_classify_address, |aarch64_classify_address,
|at |at
|config/aarch64/aarch64.c:56 |config/aarch64/aarch64.c:56
|78 |78
Ever confirmed|0 |1
Known to fail| |8.0
--- Comment #4 from Wilco <wilco at gcc dot gnu.org> ---
Fixed in GCC9, still failing in GCC8.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89369] New: [9 Regression] pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203
Date: Fri, 15 Feb 2019 17:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89369
Bug ID: 89369
Summary: [9 Regression] pseudo-RNG miscompiled on s390x-linux
with -O2 -march=zEC12 -mtune=z13 starting with r266203
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
The following testcase is miscompiled with -O2 -march=zEC12 -mtune=z13 starting
with r266203:
#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ == 8 && __CHAR_BIT__ == 8
struct S { unsigned int u[4]; };
static void
foo (struct S *out, struct S const *in, int shift)
{
unsigned long long th, tl, oh, ol;
th = ((unsigned long long) in->u[3] << 32) | in->u[2];
tl = ((unsigned long long) in->u[1] << 32) | in->u[0];
oh = th >> (shift * 8);
ol = tl >> (shift * 8);
ol |= th << (64 - shift * 8);
out->u[1] = ol >> 32;
out->u[0] = ol;
out->u[3] = oh >> 32;
out->u[2] = oh;
}
static void
bar (struct S *out, struct S const *in, int shift)
{
unsigned long long th, tl, oh, ol;
th = ((unsigned long long) in->u[3] << 32) | in->u[2];
tl = ((unsigned long long) in->u[1] << 32) | in->u[0];
oh = th << (shift * 8);
ol = tl << (shift * 8);
oh |= tl >> (64 - shift * 8);
out->u[1] = ol >> 32;
out->u[0] = ol;
out->u[3] = oh >> 32;
out->u[2] = oh;
}
__attribute__((noipa)) static void
baz (struct S *r, struct S *a, struct S *b, struct S *c, struct S *d)
{
struct S x, y;
bar (&x, a, 1);
foo (&y, c, 1);
r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> 11) & 0xdfffffefU) ^ y.u[0] ^
(d->u[0] << 18);
File rh1677602.c saved
[jakub@tucnak gcc]$ cat rh1677602.c
#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ == 8 && __CHAR_BIT__ == 8
struct S { unsigned int u[4]; };
static void
foo (struct S *out, struct S const *in, int shift)
{
unsigned long long th, tl, oh, ol;
th = ((unsigned long long) in->u[3] << 32) | in->u[2];
tl = ((unsigned long long) in->u[1] << 32) | in->u[0];
oh = th >> (shift * 8);
ol = tl >> (shift * 8);
ol |= th << (64 - shift * 8);
out->u[1] = ol >> 32;
out->u[0] = ol;
out->u[3] = oh >> 32;
out->u[2] = oh;
}
static void
bar (struct S *out, struct S const *in, int shift)
{
unsigned long long th, tl, oh, ol;
th = ((unsigned long long) in->u[3] << 32) | in->u[2];
tl = ((unsigned long long) in->u[1] << 32) | in->u[0];
oh = th << (shift * 8);
ol = tl << (shift * 8);
oh |= tl >> (64 - shift * 8);
out->u[1] = ol >> 32;
out->u[0] = ol;
out->u[3] = oh >> 32;
out->u[2] = oh;
}
__attribute__((noipa)) static void
baz (struct S *r, struct S *a, struct S *b, struct S *c, struct S *d)
{
struct S x, y;
bar (&x, a, 1);
foo (&y, c, 1);
r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> 11) & 0xdfffffefU) ^ y.u[0] ^
(d->u[0] << 18);
r->u[1] = a->u[1] ^ x.u[1] ^ ((b->u[1] >> 11) & 0xddfecb7fU) ^ y.u[1] ^
(d->u[1] << 18);
r->u[2] = a->u[2] ^ x.u[2] ^ ((b->u[2] >> 11) & 0xbffaffffU) ^ y.u[2] ^
(d->u[2] << 18);
r->u[3] = a->u[3] ^ x.u[3] ^ ((b->u[3] >> 11) & 0xbffffff6U) ^ y.u[3] ^
(d->u[3] << 18);
}
int
main ()
{
struct S a[] = { { 0x000004d3, 0xbc5448db, 0xf22bde9f, 0xebb44f8f },
{ 0x03a32799, 0x60be8246, 0xa2d266ed, 0x7aa18536 },
{ 0x15a38518, 0xcf655ce1, 0xf3e09994, 0x50ef69fe },
{ 0x88274b07, 0xe7c94866, 0xc0ea9f47, 0xb6a83c43 },
{ 0xcd0d0032, 0x5d47f5d7, 0x5a0afbf6, 0xaea87b24 },
{ 0, 0, 0, 0 } };
baz (&a[5], &a[0], &a[1], &a[2], &a[3]);
if (a[4].u[0] != a[5].u[0] || a[4].u[1] != a[5].u[1]
|| a[4].u[2] != a[5].u[2] || a[4].u[3] != a[5].u[3])
__builtin_abort ();
return 0;
}
#else
int
main ()
{
return 0;
}
#endif
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Subject: [Bug target/89369] [9 Regression] pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89369
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-15
CC| |iii at gcc dot gnu.org,
| |krebbel at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
>From gcc-bugs-return-633942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 18:10:47 2019
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Subject: [Bug target/89369] [9 Regression] pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203
Date: Fri, 15 Feb 2019 18:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89369
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45739
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45739&action=edit
gcc9-pr89369.patch
Untested fix.
The recently added patterns want to do x |= (unsigned) ((reg:DI) >> cnt), and
as the zero_extract in the patterns show, it always wants to extract exactly 32
bits. So, in my understanding of the r<noxa>sbg instruction, we want to rotate
by 32 + cnt (correct in the pattern) and want to use 32,63 as I3/I4, so we only
do the operation on the low 32 bits.
In the testcase, rxsbg %r1,%r11,40,63,56 is emitted when we need to do:
unsigned long long var = 0x50ef69fef3e09994ULL;
unsigned r1 = ...;
r1 |= (unsigned) (var >> 8);
but that instruction instead of doing |= 0xfef3e099 we need is doing |=
0xf3e099, the top 8 bits are lost. The patch changes it to rxsbg
%r1,%r11,32,63,56 which works properly. The patch also changes 3 other rxsbg
instructions on the testcase, like rxsbg %r12,%r9,64,63,32 which were emitted
for |= (unsigned) (var >> 0), note the strange 64 in there, I bet it is xoring
also the upper bits of the 64-bit destination, but we don't really care that
much about those. That said, the patch changes that to rxsbg
%r12,%r9,32,64,32.
Finally, I believe having 256 byte static buffer for each of these instructions
(times how many times it is expanded for <noxa>) is not a good idea, because it
increases .bss unnecessarily, plus the %ld in there will not really work e.g.
on cross compilers from 32-bit hosts to s390x-linux, while GEN_INT for these
small constants, while it creates rtxes, is all cached and likely already
constructed.
>From gcc-bugs-return-633943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 18:46:53 2019
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Fri, 15 Feb 2019 18:46:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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--- Comment #19 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #14)
> Martin,
> it seems to me that ipa-cp should not clone extern inline functions unless
> it sees that it helps to clone some real functions called from it. Why the
> costmodel thinks it is profitable?
It does not special-case that kind of situation. Still it is not
easy, because the cloning decisions are made on the final sweep over
the call graph from callers to callees and whether any callees would
be cloned will only be decided in the future.
Still, the cost model should probably evaluate these cases
differently, perhaps like the patch below. To the extent to which I
am able to reproduce the issue (only on gcc 8 and in the "correct"
case it segfaults as opposed to endless loop), the adjustment helps,
but it is of course only a heuristics.
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index e868b9c2623..f148ceef393 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -4685,15 +4685,23 @@ decide_about_value (struct cgraph_node *node, int
index, HOST_WIDE_INT offset,
fprintf (dump_file, " (caller_count: %i)\n", caller_count);
}
- if (!good_cloning_opportunity_p (node, val->local_time_benefit,
- freq_sum, count_sum,
- val->local_size_cost)
- && !good_cloning_opportunity_p (node,
- val->local_time_benefit
- + val->prop_time_benefit,
- freq_sum, count_sum,
- val->local_size_cost
- + val->prop_size_cost))
+ if (DECL_EXTERNAL (node->decl) && DECL_DECLARED_INLINE_P (node->decl))
+ {
+ if (!good_cloning_opportunity_p (node, val->prop_time_benefit,
+ freq_sum, count_sum,
+ val->local_size_cost
+ + val->prop_size_cost))
+ return false;
+ }
+ else if (!good_cloning_opportunity_p (node, val->local_time_benefit,
+ freq_sum, count_sum,
+ val->local_size_cost)
+ && !good_cloning_opportunity_p (node,
+ val->local_time_benefit
+ + val->prop_time_benefit,
+ freq_sum, count_sum,
+ val->local_size_cost
+ + val->prop_size_cost))
return false;
if (dump_file)
>From gcc-bugs-return-633944-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 18:49:56 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88512] Too much STL in error output
Date: Fri, 15 Feb 2019 18:49:00 -0000
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's easy for you to say that after looking at the reason it failed and knowing
what the code is trying to do (obviously "insert" modifies the string, so it
can't be const). But the compiler has to try every overload, and doesn't know
what your intention is, or what the word "insert" means.
The problem here is (as before) that std::string has eight overloads of insert
(and just as many for assign, and begin, and replace etc), and there's nothing
the compiler can do about that.
Potentially the compiler could be changed so that if all the overload
candidates are non-const and the object is const, it just says that. But that's
another fairly specialized diagnostic just for this case. Most classes simply
don't have eight overloads of the same function.
>From gcc-bugs-return-633945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 18:58:18 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89370] New: Output std::string in diagnostics instead of std::__cxx11::basic_string<_CharT, _Traits, _Alloc>
Date: Fri, 15 Feb 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89370
Bug ID: 89370
Summary: Output std::string in diagnostics instead of
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Errors involving std::string are unreadable (see Bug 88512 comment 8). Nobody
cares that it's:
'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator
std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::insert(std::__cxx11::basic_string<_CharT, _Traits,
_Alloc>::__const_iterator, _CharT) [with _CharT = char; _Traits =
std::char_traits<char>; _Alloc = std::allocator<char>;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::__const_iterator =
__gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer =
const char*]'
1745 | insert(__const_iterator __p, _CharT __c)
| ^~~~~~
The type std::__cxx11::basic_string<_CharT, _Traits, _Alloc> should be shown as
std::string. That alone makes it far more readable. And if we don't show it as
a template specialization maybe we don't need the entire "[with ...]" part at
all, but if we do need it, we should reduce it ...
I don't think expanding the return type or the __const_iterator type in the
"[with ...]" part is very useful:
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >;
And why on Earth is it telling us what the pointer and const_pointer types
are?! They don't appear in the member function signature at all!
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::pointer = char*;
typename __gnu_cxx::__alloc_traits<typename
__gnu_cxx::__alloc_traits<_Alloc>::rebind<_CharT>::other>::const_pointer =
const char*
Cool story bro. Those types are not relevant.
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Subject: [Bug c++/88512] Too much STL in error output
Date: Fri, 15 Feb 2019 18:59:00 -0000
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I've created bug 89370 to request showing the type as std::string.
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Subject: [Bug middle-end/89371] New: missed vectorisation with "#pragma omp simd collapse(2)"
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Bug ID: 89371
Summary: missed vectorisation with "#pragma omp simd
collapse(2)"
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void ff(double* res, double const* a, double const* b, int ncell, int neq)
{
#pragma omp simd collapse(2)
for(int icell=0; icell < ncell; ++icell)
{
for(int ieq=0; ieq<neq; ++ieq)
{
res[icell*neq+ieq] = a[icell*neq+ieq]-b[icell*neq+ieq];
}
}
}
built by gcc 8.2 on x86_64 with "-std=c++14 -O3 -mavx -fopenmp-simd" results in
simd instruction emitted. Run time tests with ncell=100'000 and neq=3 for
instance confirm that the code is slower with "#pragma omp simd collapse(2)".
Am I missing something?
Ideally, I would like to be able to flatten the loop:
void ff(double* res, double const* a, double const* b, int ncell, int neq)
{
for(int j=0; j < ncell*neq; ++j)
res[j] = a[j]-b[j];
}
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Subject: [Bug c++/88512] Too much STL in error output
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's also Bug 53281
>From gcc-bugs-return-633949-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 19:43:08 2019
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Subject: [Bug middle-end/89371] missed vectorisation with "#pragma omp simd collapse(2)"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization, openmp
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, in this case I don't see any advantage of using collapsed loops, it won't
make the loop more readable and is much harder to vectorize, so why not to
write it that way?
Yes, there is certainly room for improvement to undo this kind of stuff.
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Subject: [Bug c++/88512] Too much STL in error output
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--- Comment #12 from Jonny Grant <jg at jguk dot org> ---
(In reply to Jonathan Wakely from comment #9)
> It's easy for you to say that after looking at the reason it failed and
> knowing what the code is trying to do (obviously "insert" modifies the
> string, so it can't be const). But the compiler has to try every overload,
> and doesn't know what your intention is, or what the word "insert" means.
>
> The problem here is (as before) that std::string has eight overloads of
> insert (and just as many for assign, and begin, and replace etc), and
> there's nothing the compiler can do about that.
>
> Potentially the compiler could be changed so that if all the overload
> candidates are non-const and the object is const, it just says that. But
> that's another fairly specialized diagnostic just for this case. Most
> classes simply don't have eight overloads of the same function.
Sounds good, those insert methods aren't 'const' so at least the first line
could say that...
eg:
$ g++ -Wall -c -o int int.cpp
int.cpp: In function ‘int main()’:
int.cpp:13:21: error: no matching function for call to
‘std::string::insert(size_t, const string&) const’
str.insert(4, str2);
^
Note, ‘str’ is const and all ‘std::string::insert()’ methods are non-const
>From gcc-bugs-return-633951-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 19:51:43 2019
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Subject: [Bug c++/89370] Output std::string in diagnostics instead of std::__cxx11::basic_string<_CharT, _Traits, _Alloc>
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Jonny Grant <jg at jguk dot org> changed:
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--- Comment #1 from Jonny Grant <jg at jguk dot org> ---
Many thanks!
Happy to pay $200 bounty for this feature to implementer or FSF/GNU etc
>From gcc-bugs-return-633952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 20:02:15 2019
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org,
| |redi at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With -fpic it actually rejects both static_asserts.
In all the cases, it is symtab_node::equal_address_to that attempts to decide
if the two VAR_DECLs need to be the same or distinct or unknown.
Without templates and without -fpic that function returns true, because both
are defined locally and we can easily decide that they must be different, but
with -fpic, the generic code allows them to be interposed and fails. Even
without -fpic, for templates the variables are DECL_COMDAT and thus not really
known if defined by the current or some other TU.
No idea if C++ standard says anything here and constexpr evaluation shouldn't
use some different rules (or in addition to what the generic code says).
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Subject: [Bug c/88944] Suggested alternative C stdbool.h
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-15
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Target Milestone|--- |10.0
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks.
FWIW trunk (gcc 9) no longer suggests "_Bool".
I have a patch pending (for gcc 10) which implements the header suggestion.
>From gcc-bugs-return-633954-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 15 20:21:27 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89372] New: Incorrect PMULHRSW
Date: Fri, 15 Feb 2019 20:21:00 -0000
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Bug ID: 89372
Summary: Incorrect PMULHRSW
Product: gcc
Version: 9.0
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CC: ubizjak at gmail dot com
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Target: i386,x86-64
sse.md has
(define_mode_iterator PMULHRSW
[V4HI V8HI (V16HI "TARGET_AVX2")])
(define_expand "<ssse3_avx2>_pmulhrsw<mode>3_mask"
[(set (match_operand:PMULHRSW 0 "register_operand")
(vec_merge:PMULHRSW
(truncate:PMULHRSW
(lshiftrt:<ssedoublemode>
(plus:<ssedoublemode>
(lshiftrt:<ssedoublemode>
(mult:<ssedoublemode>
(sign_extend:<ssedoublemode>
(match_operand:PMULHRSW 1 "nonimmediate_operand"))
(sign_extend:<ssedoublemode>
(match_operand:PMULHRSW 2 "nonimmediate_operand")))
(const_int 14))
(match_dup 5))
(const_int 1)))
(match_operand:PMULHRSW 3 "register_operand")
(match_operand:<avx512fmaskmode> 4 "register_operand")))]
"TARGET_AVX512BW && TARGET_AVX512VL"
{
operands[5] = CONST1_RTX(<MODE>mode);
ix86_fixup_binary_operands_no_copy (MULT, <MODE>mode, operands);
})
But AVX512BW doesn't support V4HI.
(define_expand "<ssse3_avx2>_pmulhrsw<mode>3"
[(set (match_operand:PMULHRSW 0 "register_operand")
(truncate:PMULHRSW
(lshiftrt:<ssedoublemode>
(plus:<ssedoublemode>
(lshiftrt:<ssedoublemode>
(mult:<ssedoublemode>
(sign_extend:<ssedoublemode>
(match_operand:PMULHRSW 1 "nonimmediate_operand"))
(sign_extend:<ssedoublemode>
(match_operand:PMULHRSW 2 "nonimmediate_operand")))
(const_int 14))
(match_dup 3))
(const_int 1))))]
"TARGET_AVX2"
{
operands[3] = CONST1_RTX(<MODE>mode);
ix86_fixup_binary_operands_no_copy (MULT, <MODE>mode, operands);
})
But V4HI V8HI doesn't require AVX2.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #17 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #16)
> Regarding the unwanted padding with \0, the following patch seems to
> solve the issue with transfer.
Regtested cleanly and submitted here:
https://gcc.gnu.org/ml/fortran/2019-02/msg00126.html
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Subject: [Bug c++/84536] [7/8/9 Regression] ICE with non-type template parameter
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P4 |P3
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-15
CC| |paolo.carlini at oracle dot com
Ever confirmed|0 |1
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
I would argue for P3, because, if we slightly tweak it to:
template<int... N> auto foo(N...); // -> void {}
void bar()
{
foo<>();
}
we don't emit any diagnostics before ICEing.
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Subject: [Bug go/89368] [9 regression] ICE in go/gofrontend/expressions.cc:4669 after r268923
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Feb 15 21:04:58 2019
New Revision: 268948
URL: https://gcc.gnu.org/viewcvs?rev=268948&root=gcc&view=rev
Log:
PR go/89368
compiler: write barrier check nil-check policy tweak
Tweak the recipe for generating writeBarrier loads to insure that the
dereference expr is marked as not requiring a nil check (not needed
for gccgo, but needed for gollvm).
Fixes https://gcc.gnu.org/PR89368
Reviewed-on: https://go-review.googlesource.com/c/162904
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/gcc/go/gofrontend/wb.cc
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Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Fri, 15 Feb 2019 21:06:00 -0000
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--- Comment #35 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Right: 64-bit Solaris/SPARC uses the full 64-bit address space:
>
> https://docs.oracle.com/cd/E37838_01/html/E66175/advanced-2.
> html#SSFDGadvanced-5
>
> The gap between the low and high parts cannot be determined
> programmatically right now and varies between different sparc machines.
Linux uses an equivalent VM layout (although the primary stack is in the low
part instead of the high part). I think that on Linux the hole is fully
determined by the number of bits available for virtual addresses.
> Even if that could be fixed (there's been talk about adding an interface
> to determine that information at runtime), the current shadow address
> calculation cannot cope with such a discontinuous address space.
Right, but you can tweak it once the position of the hole is determined. I
have done so for a 52-bit VM layout (T4 and later apparently) and, modulo fixes
all over the place (libsanitizer, libbacktrace, compiler, testsuite), I now
have a 100% clean ASAN testsuite on both 32-bit and 64-bit SPARC/Linux.
Trying on Solaris now...
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Subject: [Bug c++/60920] Crash on double template header due to default template parameter
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed by the patch which fixed c++/85264.
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Subject: [Bug c++/84916] Tweaks to template type elision
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I have a patch for this, queuing for gcc 10 stage 1.
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Subject: [Bug go/89368] [9 regression] ICE in go/gofrontend/expressions.cc:4669 after r268923
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Thanks for the report. Fixed.
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Let me put together a patch for the negative offsets. The argc patch is useful
on its own, independent of this bug.
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Subject: [Bug go/89171] FAIL: go/build
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--- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
I don't know what is happening here and I don't have access to a riscv64
machine to test on (there doesn't seem to be one in the compile farm). The
errors are incorrect in that these are not expected dependencies, not
unexpected ones. This may be a bug in the generation of top level composite
literals, though I can't think of any reason that would be specific to riscv64,
and of course it is working on other systems.
Do you have any suggestions for how I could debug this?
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
CC| |doko at debian dot org
--- Comment #15 from Ian Lance Taylor <ian at airs dot com> ---
*** Bug 89277 has been marked as a duplicate of this bug. ***
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Subject: [Bug go/89277] [9 Regression] libgo memory hogs in libgo testsuite (at least on s390x-linux-gnu)
Date: Sat, 16 Feb 2019 01:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89277
Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Closing as a duplicate per earlier comment. Please comment if you disagree.
*** This bug has been marked as a duplicate of bug 89123 ***
>From gcc-bugs-return-633966-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 05:11:48 2019
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From: "mdblack98 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89373] New: macro expansion not counting braces correctly
Date: Sat, 16 Feb 2019 05:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89373
Bug ID: 89373
Summary: macro expansion not counting braces correctly
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mdblack98 at yahoo dot com
Target Milestone: ---
include <stdio.h>
#define MYMACRO1(m) MYLIST;
#define MYMACRO(r,m) \
MYMACRO##r(m)
#define MYLIST {1,2,3,4,5}
// too many args -- does not allow for braces such as used for array
initialization
int ii[32] = MYMACRO(1,{1,2,3,4,5});
// too many args -- does not allow for braces such as used for array
initialization
int jj[32] = MYMACRO(1,MYLIST);
// this works
int kk[32] = MYLIST;
int
main()
{
// all 3 of these should print 1,2,3,4,5
for(int i=0;i<5;++i) printf("ii %d,%d\n",i,ii[i]);
for(int i=0;i<5;++i) printf("jj %d,%d\n",i,jj[i]);
for(int i=0;i<5;++i) printf("kk %d,%d\n",i,kk[i]);
return 0;
}
>From gcc-bugs-return-633967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 05:55:25 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/89373] macro expansion not counting braces correctly
Date: Sat, 16 Feb 2019 05:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89373
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c |preprocessor
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
In the C preprocessor without a '(' everything after the ',' is the next
argument.
>From gcc-bugs-return-633968-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 08:31:30 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89374] New: gfortran does not respect privacy of types
Date: Sat, 16 Feb 2019 08:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89374
Bug ID: 89374
Summary: gfortran does not respect privacy of types
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: juergen.reuter at desy dot de
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The following example is from the Intel Forum, cf.
https://software.intel.com/en-us/forums/intel-fortran-compiler-for-linux-and-mac-os-x/topic/583935
The NAG compiler and now also the Intel compiler report:
Error: abstract.f90, line 69: Cannot extend abstract type ABSTRACT_BUGGY
because it has a private deferred type-bound procedure BUGGY_MULTIPLY_SCALAR
detected at ::@BUGGY
Error: abstract.f90, line 69: Cannot extend abstract type ABSTRACT_BUGGY
because it has a private deferred type-bound procedure SCALAR_MULTIPLY_BUGGY
detected at ::@BUGGY
Error: abstract.f90, line 69: Cannot extend abstract type ABSTRACT_BUGGY
because it has a private deferred type-bound procedure BUGGY_ASSIGN_BUGGY
detected at ::@BUGGY
[NAG Fortran Compiler pass 1 error termination, 3 errors]
If I undestand this correctly, the abstract types cannot be extended because
they are private, and not public. gfortran doesn't seem to recognize this.
The code is below
module type_abstract_buggy
implicit none
private
public :: abstract_buggy
type, abstract :: abstract_buggy
contains
! public methods
procedure(abstract_printf), public, deferred :: printf
generic, public :: operator(*) =>
buggy_multiply_scalar, scalar_multiply_buggy
generic, public :: assignment(=) =>
buggy_assign_buggy
! private methods
procedure(abstract_buggy_multiply_scalar), pass(lhs), private,
deferred :: buggy_multiply_scalar
procedure(scalar_multiply_abstract_buggy), pass(rhs), private,
deferred :: scalar_multiply_buggy
procedure(abstract_buggy_assign_abstract_buggy), pass(lhs), private,
deferred :: buggy_assign_buggy
endtype abstract_buggy
abstract interface
subroutine abstract_printf(self)
import :: abstract_buggy
class(abstract_buggy), intent(IN) :: self
endsubroutine abstract_printf
function abstract_buggy_multiply_scalar(lhs, rhs) result(multy)
import :: abstract_buggy
class(abstract_buggy), intent(IN) :: lhs
integer, intent(IN) :: rhs
class(abstract_buggy), allocatable :: multy
endfunction abstract_buggy_multiply_scalar
function scalar_multiply_abstract_buggy(lhs, rhs) result(multy)
import :: abstract_buggy
integer, intent(IN) :: lhs
class(abstract_buggy), intent(IN) :: rhs
class(abstract_buggy), allocatable :: multy
endfunction scalar_multiply_abstract_buggy
pure subroutine abstract_buggy_assign_abstract_buggy(lhs, rhs)
import :: abstract_buggy
class(abstract_buggy), intent(INOUT) :: lhs
class(abstract_buggy), intent(IN) :: rhs
endsubroutine abstract_buggy_assign_abstract_buggy
endinterface
endmodule type_abstract_buggy
module lib_abstract_buggy
use type_abstract_buggy, only : abstract_buggy
implicit none
private
public :: raise_bug
contains
subroutine raise_bug(bug, scalar)
class(abstract_buggy), intent(INOUT) :: bug
integer, intent(IN) :: scalar
call bug%printf()
bug = bug * scalar
call bug%printf()
bug = scalar * bug
call bug%printf()
endsubroutine raise_bug
endmodule lib_abstract_buggy
module type_buggy
use type_abstract_buggy, only : abstract_buggy
implicit none
private
public :: buggy
type, extends(abstract_buggy) :: buggy
private
real, dimension(:), allocatable :: array
integer :: scalar=0
contains
! public methods
procedure, pass(self), public :: printf
! private methods
procedure, pass(lhs), private :: buggy_multiply_scalar
procedure, pass(rhs), private :: scalar_multiply_buggy
procedure, pass(lhs), private :: buggy_assign_buggy
endtype buggy
interface buggy
procedure create_buggy
endinterface
contains
pure function create_buggy(array, scalar) result(bug)
real, dimension(:), intent(IN) :: array
integer, intent(IN) :: scalar
type(buggy) :: bug
bug%array = array
bug%scalar = scalar
return
endfunction create_buggy
subroutine printf(self)
class(buggy), intent(IN) :: self
integer :: i
print "(A)", "Array:"
do i=1, size(self%array)
print*, self%array(i)
enddo
print "(A,I5)", "Scalar: ", self%scalar
endsubroutine printf
function buggy_multiply_scalar(lhs, rhs) result(multy)
class(buggy), intent(IN) :: lhs
integer, intent(IN) :: rhs
class(abstract_buggy), allocatable :: multy
type(buggy), allocatable :: multy_tmp
allocate(buggy :: multy_tmp)
multy_tmp%array = lhs%array * rhs
multy_tmp%scalar = lhs%scalar
call move_alloc(multy_tmp, multy)
return
endfunction buggy_multiply_scalar
pure function scalar_multiply_buggy(lhs, rhs) result(multy)
integer, intent(IN) :: lhs
class(buggy), intent(IN) :: rhs
class(abstract_buggy), allocatable :: multy
type(buggy), allocatable :: multy_tmp
allocate(buggy :: multy_tmp)
multy_tmp%array = rhs%array * lhs
multy_tmp%scalar = rhs%scalar
call move_alloc(multy_tmp, multy)
return
endfunction scalar_multiply_buggy
pure subroutine buggy_assign_buggy(lhs, rhs)
class(buggy), intent(INOUT) :: lhs
class(abstract_buggy), intent(IN) :: rhs
select type(rhs)
class is(buggy)
if (allocated(rhs%array)) lhs%array = rhs%array
lhs%scalar = rhs%scalar
endselect
return
endsubroutine buggy_assign_buggy
endmodule type_buggy
program ifort_bug
use lib_abstract_buggy, only : raise_bug
use type_buggy, only : buggy
implicit none
type(buggy) :: bug
bug = buggy(array=[1., 2., 3.], scalar=3)
call raise_bug(bug=bug, scalar=2)
stop
endprogram ifort_bug
>From gcc-bugs-return-633969-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 08:40:17 2019
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Subject: [Bug fortran/89374] gfortran does not respect privacy of types
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89374
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-16
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Related to/duplicate of pr36383?
>From gcc-bugs-return-633970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 08:44:15 2019
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89374] gfortran does not respect privacy of types
Date: Sat, 16 Feb 2019 08:44:00 -0000
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--- Comment #2 from Jürgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Dominique d'Humieres from comment #1)
> Related to/duplicate of pr36383?
Related to most likely yes, could have the same origin. Probably the fortran DT
is cast into an internal C representation. I don't know whether this is the
same (or a related) object in the gfortran C code.
>From gcc-bugs-return-633971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 09:26:35 2019
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Subject: [Bug fortran/89364] Assumed rank object with incorrect values for shape and bounds
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-16
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Why do you want the shape to be [4,-1]?
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Subject: =?UTF-8?B?W0J1ZyBmb3J0cmFuLzg5Mzc1XSBOZXc6IGZvcnRyYW4vZXhwci5jOjQ3MjM6?= =?UTF-8?B?NTogd2FybmluZzogbG9naWNhbCDigJhvcuKAmSBvZiBlcXVhbCBleHByZXNz?= =?UTF-8?B?aW9ucyBbLVdsb2dpY2FsLW9wXQ==?Date: Sat, 16 Feb 2019 09:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89375
Bug ID: 89375
Summary: fortran/expr.c:4723:5: warning: logical ‘or’ of equal
expressions [-Wlogical-op]
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Source code is
return comp->attr.pointer
|| comp->attr.pointer
|| comp->attr.proc_pointer
|| comp->attr.class_pointer
|| class_pointer (comp);
svn blame says
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David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com,
| |foreese at gcc dot gnu.org
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
svn blame says
262442 foreese return comp->attr.pointer
262442 foreese || comp->attr.pointer
262442 foreese || comp->attr.proc_pointer
262442 foreese || comp->attr.class_pointer
262442 foreese || class_pointer (comp);
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Sat, 16 Feb 2019 11:08:00 -0000
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--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I have proposed a fix on the mailing list:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01315.html
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Subject: [Bug rtl-optimization/66152] [9 Regression] suboptimal load bytes to stack
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 16 11:20:33 2019
New Revision: 268957
URL: https://gcc.gnu.org/viewcvs?rev=268957&root=gcc&view=rev
Log:
PR rtl-optimization/66152
* builtins.h (c_readstr): Declare.
* builtins.c (c_readstr): Remove forward declaration. Add
null_terminated_p argument, if false, read all bytes from the
string instead of stopping after '\0'.
* expr.c (string_cst_read_str): New function.
(store_expr): Use string_cst_read_str instead of
builtin_strncpy_read_str. Try to store by pieces the whole
exp_len first, and only if that fails, split it up into
store by pieces followed by clear_storage. Formatting fix.
* gcc.target/i386/pr66152.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr66152.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/builtins.h
trunk/gcc/expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/87254] Inlining clones in trivial wrappers
Date: Sat, 16 Feb 2019 11:44:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
This has nothing to do with cloning but is not entirely a duplicate of
PR 87094 either.
This is basically a request to account for stack size during inlining
using predicates like we do for code time/size and then use
jump-functions to attempt to disprove the predicates, which in this
case would already happen. I guess one more integer would fit into
struct size_time_entry so it is mostly a question of collecting this
information from clobbers in the summary-generation phase.
>From gcc-bugs-return-633978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 13:00:01 2019
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Subject: [Bug go/89171] FAIL: go/build
Date: Sat, 16 Feb 2019 13:00:00 -0000
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
There are prebuilt images in
<https://download.opensuse.org/ports/riscv/tumbleweed/images/> that are set up
to execute via qemu linux-user emulation.
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From: "johannespfau at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/89177] unaligned memory access in libphobos
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Johannes Pfau <johannespfau at gmail dot com> changed:
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--- Comment #2 from Johannes Pfau <johannespfau at gmail dot com> ---
Thanks for the bug report & patch. It seems upstream phobos has already fixed
this in a different way:
https://github.com/dlang/phobos/commit/d5f710c57e717ef470d093c1739156dcb2f2d469#diff-2f532fcf37a0e29f7683a930ad9915ae
Could you please try whether simply replacing the murmurhash.d file with this
latest upstream version works?
https://raw.githubusercontent.com/dlang/phobos/master/std/digest/murmurhash.d
It looks like there have been no compiler-dependent changes to murmurhash.d, so
this latest version likely works. Otherwise we could use the first version
including the bugfix
(https://github.com/dlang/phobos/blob/d5f710c57e717ef470d093c1739156dcb2f2d469/std/digest/murmurhash.d)
or backport the bugfix.
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 16 16:12:51 2019
New Revision: 268960
URL: https://gcc.gnu.org/viewcvs?rev=268960&root=gcc&view=rev
Log:
2019-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
* trans-decl.c (generate_coarray_sym_init): For an array
constructor in a DATA statement of a coarray variable, set the
rank to 1 to avoid confusion later on. If the constructor
contains only one value, use that for initiailizig.
2019-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
* gfortran.dg/coarray_data_1.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/coarray_data_1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/71066] [7/8 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Sat, 16 Feb 2019 16:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|set_loop_bounds, at |set_loop_bounds, at
|fortran/trans-array.c:4680 |fortran/trans-array.c:4680
--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk so far.
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88680] [9 Regression] bogus -Wtype-limits for constant expressions after r267272
Date: Sat, 16 Feb 2019 16:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88680
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Sat Feb 16 16:17:17 2019
New Revision: 268961
URL: https://gcc.gnu.org/viewcvs?rev=268961&root=gcc&view=rev
Log:
Fix excess warnings from -Wtype-limits with location wrappers (PR c++/88680)
PR c++/88680 reports excess warnings from -Wtype-limits after the C++
FE's use of location wrappers was extended in r267272 for cases such as:
const unsigned n = 8;
static_assert (n >= 0 && n % 2 == 0, "");
t.C:3:18: warning: comparison of unsigned expression >= 0 is always true
[-Wtype-limits]
3 | static_assert (n >= 0 && n % 2 == 0, "");
| ~~^~~~
The root cause is that the location wrapper around "n" breaks the
suppression of the warning for the "if OP0 is a constant that is >= 0"
case.
This patch fixes it by calling fold_for_warn on OP0, extracting the
constant.
gcc/c-family/ChangeLog:
PR c++/88680
* c-common.c (shorten_compare): Call fold_for_warn on op0 when
implementing -Wtype-limits.
gcc/testsuite/ChangeLog:
PR c++/88680
* g++.dg/wrappers/pr88680.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/wrappers/pr88680.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88680] [9 Regression] bogus -Wtype-limits for constant expressions after r267272
Date: Sat, 16 Feb 2019 16:18:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed by r268961.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89129] [meta-bug] bogus/missing -Wtype-limits warnings
Date: Sat, 16 Feb 2019 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89129
Bug 89129 depends on bug 88680, which changed state.
Bug 88680 Summary: [9 Regression] bogus -Wtype-limits for constant expressions after r267272
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88680
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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From: "jb at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/89274] Inconsistent list directed output of INTEGER(16)
Date: Sat, 16 Feb 2019 16:31:00 -0000
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jb at gcc dot gnu.org
--- Comment #1 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Seems obvious, Ok for trunk with a ChangeLog.
Another point of view would be that for list-directed we should always use
width=0 for all kinds; that would make list-directed more useful for things
like
print *, 'Frobnicator value is ', frob, ' frobs.'
but would make it less useful for outputting tables.
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Subject: [Bug preprocessor/89373] macro expansion not counting braces correctly
Date: Sat, 16 Feb 2019 17:20:00 -0000
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mdblack98 at yahoo dot com changed:
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----------------------------------------------------------------------------
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Resolution|INVALID |---
--- Comment #2 from mdblack98 at yahoo dot com ---
So how does one get this to compile then..Can't seem to find any combination of
parentheses that works. I'm converting an entry in the hamlib project to an
array and that's what is causing this problem with static initialization of the
array.
x3.c:10:26: error: braced-group within expression allowed only inside a
function
FRQ_RNG_160m_REGION##r((m), (lp), (hp), (v), (a))
^
x3.c:6:25: note: in definition of macro ‘FRQ_RNG_160m_REGION1’
{ 1810, 2, (md), (lp), (hp), (v), (a) }
^~
x3.c:21:20: note: in expansion of macro ‘FRQ_RNG_HF’
struct foo myfoo = FRQ_RNG_HF(1, MYLIST, 5,100,1,1);
^~~~~~~~~~
#include <stdio.h>
#define MYLIST {1,2,3,4,5}
#define FRQ_RNG_160m_REGION1(md,lp,hp,v,a) \
{ 1810, 2, (md), (lp), (hp), (v), (a) }
#define FRQ_RNG_HF(r,m,lp,hp,v,a) \
FRQ_RNG_160m_REGION##r((m), (lp), (hp), (v), (a))
struct foo {
int i1;
int i2[64];
int i3;
int i4;
int i5;
int i6;
};
struct foo myfoo = FRQ_RNG_HF(1, MYLIST, 5,100,1,1);
int
main()
{
for(int i=0;i<5;++i) printf("kk %d,%d\n",i,myfoo.i2[i]);
return 0;
}
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89376] New: ICE: Segmentation fault (in oacc_entry_exit_ok_1)
Date: Sat, 16 Feb 2019 17:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89376
Bug ID: 89376
Summary: ICE: Segmentation fault (in oacc_entry_exit_ok_1)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, openacc
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-9.0.0-alpha20190210 snapshot (r268755) ICEs when compiling the following
testcase w/ -O2 -fopenacc -fno-tree-ch -fno-tree-dce -fno-tree-vrp:
void
qr (void)
{
int fa;
#pragma acc kernels
for (int rw = 0; rw < 1; ++rw)
fa = 0;
}
% gcc-9.0.0-alpha20190210 -O2 -fopenacc -fno-tree-ch -fno-tree-dce
-fno-tree-vrp -c vvyr2jl1.c
during GIMPLE pass: parloops
vvyr2jl1.c: In function 'qr._omp_fn.0':
vvyr2jl1.c:9:1: internal compiler error: Segmentation fault
9 | }
| ^
0xd6fa7f crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/toplev.c:326
0xe280f6 oacc_entry_exit_ok_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-parloops.c:3051
0xe280f6 oacc_entry_exit_ok
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-parloops.c:3251
0xe280f6 parallelize_loops
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-parloops.c:3402
0xe2836b execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190210/work/gcc-9-20190210/gcc/tree-parloops.c:3505
0xe2836b execute
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Subject: [Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression
Date: Sat, 16 Feb 2019 18:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88074
--- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 16 18:46:04 2019
New Revision: 268962
URL: https://gcc.gnu.org/viewcvs?rev=268962&root=gcc&view=rev
Log:
PR middle-end/88074
* simplify.c (simplify_transformation_to_array): Run post_op
immediately after processing corresponding row, rather than at the
end.
(norm2_scale): New variable.
(add_squared): Rename to ...
(norm2_add_squared): ... this. Scale down operand and/or result
if needed.
(do_sqrt): Rename to ...
(norm2_do_sqrt): ... this. Handle the result == e case. Scale up
result and clear norm2_scale.
(gfc_simplify_norm2): Clear norm2_scale. Change add_squared to
norm2_add_squared and &do_sqrt to norm2_do_sqrt. Scale up result
and clear norm2_scale again.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/simplify.c
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Subject: [Bug rtl-optimization/66152] [9 Regression] suboptimal load bytes to stack
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed for 9+ (and should work in 8.x too).
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Subject: [Bug libgomp/89377] New: [OMPVV SOLLVE] map of class member array with no modifier illegal memory access
Date: Sat, 16 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89377
Bug ID: 89377
Summary: [OMPVV SOLLVE] map of class member array with no
modifier illegal memory access
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: josem at udel dot edu
CC: jakub at gcc dot gnu.org
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Created attachment 45740
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45740&action=edit
Whole code
Hello,
The following code has a runtime error that generates an illegal memory acceess
when calling the "modify()" method. Attached is a full version of the code.
class A {
private:
int h_array[N];
int size;
public:
A(const int s) : size(s) {
for (int i = 0; i < N; i++)
h_array[i] = 0;
}
void modify() {
#pragma omp target
{
for (int i = 0; i < size; ++i)
h_array[i] += 1;
}
}
int* getArray() {
return &h_array[0];
}
};
I've tried GCC 7.1 on a POWER system + P100, and GCC 8.2 on an Intel
architecture + K40. On POWER it hangs, on Intel it breaks with the following:
target_map_method_array.cpp.o:
libgomp: cuCtxSynchronize error: an illegal memory access was encountered
libgomp: cuMemFreeHost error: an illegal memory access was encountered
libgomp: device finalization failed
Thanks and have a great day
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Subject: [Bug libgomp/89377] [OMPVV SOLLVE] map of class member array with no modifier illegal memory access
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't believe this is well defined in OpenMP 4.5, it is in 5.0, but
eventhough GCC 9 implements parts of OpenMP 5.0, this part is not implemented.
So, you need something like: int *p = h_array; before the #pragma omp target,
map(tofrom:p[:N]) on the pragma and use p instead of h_array.
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Subject: [Bug libgomp/89377] [OMPVV SOLLVE] map of class member array with no modifier illegal memory access
Date: Sat, 16 Feb 2019 20:06:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, OpenMP 5.0 allows much wider set of expressions in map clause, allows
e.g. map(this[:1]) which is not valid in 4.5 and says that is the default when
referencing non-static data members of a class in a method.
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Subject: [Bug middle-end/89371] missed vectorisation with "#pragma omp simd collapse(2)"
Date: Sat, 16 Feb 2019 22:16:00 -0000
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--- Comment #2 from Arnaud Desitter <arnaud02 at users dot sourceforge.net> ---
In my original report, I meant to write:
"built by gcc 8.2 on x86_64 with "-std=c++14 -O3 -mavx -fopenmp-simd" results
in **NO** simd instruction emitted."
subroutine ff(res, a, b, ncell, neq)
integer :: ncell, neq
double precision, dimension(neq,ncell) :: res, a, b
integer :: icell, ieq
!$omp simd collapse(2)
do icell=1,ncell
do ieq=1, neq
res(ieq,icell) = a(ieq,icell)-b(ieq,icell)
enddo
enddo
end subroutine
has the same issue (gfortran 8.2 "-O3 -mavx -fopenmp-simd"). "!$omp simd
collapse(2)" produces scalar code.
I agree that it is possible to flatten the loops manually. I am wondering why
the clause "collapse(2)" ends up disabling the vectorisation.
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Subject: [Bug target/89372] Incorrect PMULHRSW
Date: Sat, 16 Feb 2019 22:16:00 -0000
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--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sat Feb 16 22:16:04 2019
New Revision: 268964
URL: https://gcc.gnu.org/viewcvs?rev=268964&root=gcc&view=rev
Log:
i386: Add ssse3_pmulhrswv4hi3 expander
There is no V4HI pmulhrsw in AVX512BW and V4HI/V8HI pmulhrsw don't require
AVX2.
PR target/89372
* config/i386/sse.md (ssedoublemode): Remove V4HI.
(PMULHRSW): Likewise.
(<ssse3_avx2>_pmulhrsw<mode>3): Require TARGET_SSSE3, not
TARGET_AVX2.
(ssse3_pmulhrswv4hi3): New expander.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/sse.md
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Subject: [Bug target/89372] Incorrect PMULHRSW
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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Subject: [Bug c++/88826] ICE (segfault) when compiling invalid C++ code with -std=c++2a
Date: Sat, 16 Feb 2019 23:08:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-633997-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 16 23:09:45 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sat, 16 Feb 2019 23:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #19 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This is worse than I thought.
It seems that, if we compile
subroutine foo(a)
real :: a
end subroutine foo
program main
real :: x
call foo(x)
end program main
we call build_function_type_vec (type, typelist)
and if we just compile
program main
real :: x
call foo(x)
end program main
we call build_varargs_function_type_vec (type, typelist);
(which is in trans-types.c (gfc_get_function_type), in the
code snippet
if (is_varargs)
type = build_varargs_function_type_vec (type, typelist);
else
type = build_function_type_vec (type, typelist);
type = create_fn_spec (sym, type);
This only "works" for calling conventions where varargs
do not matter.
Now, this is caller-side, so I do not think a fix to
generate the correct function decl from the call should
hurt.
I guess that if we really fix this one, we will also fix quite a few
latent bugs...
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Subject: [Bug c++/84536] [7/8/9 Regression] ICE with non-type template parameter
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----------------------------------------------------------------------------
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--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sun, 17 Feb 2019 02:55:00 -0000
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--- Comment #20 from Alan Modra <amodra at gmail dot com> ---
That is what I thought too at first, and why I though that making calls with
hidden args to be varargs was not going to be a problem. However, calling
build_varargs_function_type_vec with an empty typelist does not build a varargs
function. Instead, you get a function decl with a NULL TYPE_ARG_TYPES, which
is an unprototyped function.
>From gcc-bugs-return-634000-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 03:03:12 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Sun, 17 Feb 2019 03:03:00 -0000
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--- Comment #4 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Sun Feb 17 03:01:41 2019
New Revision: 268968
URL: https://gcc.gnu.org/viewcvs?rev=268968&root=gcc&view=rev
Log:
[RS6000] Fix <bd>_<mode> and <bd>tf_<mode> splitters
This patch fixes a bug that can result in "insn does not satisfy its
constraints" if these splitters fire due to not getting ctr for the
jump insn. Since the jump insn can have any of r,m,d,wi,c,l as the
decremented count output, it's not sufficient to check for
gpc_reg_operand (which matches VSX regs for example). Seen after
correcting register_move_cost when the cost of gpr <-> vsx is much
lower. Since this is a prerequisite to fixing PR89271, I'm mentioning
that PR in the ChangeLog.
The <bd>tf_<mode> split had a further bug in that it wouldn't match
if the count output was m,d,wi, or l.
PR target/89271
* config/rs6000/rs6000.md (<bd>_<mode> split): Check for an int
output reg on add insn.
(<bd>tf_<mode> split): Likewise. Match predicates with insn.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.md
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Subject: [Bug rtl-optimization/89378] New: [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c -mmsa (internal compiler error)
Date: Sun, 17 Feb 2019 06:28:00 -0000
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Bug ID: 89378
Summary: [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c
-mmsa (internal compiler error)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Created attachment 45741
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45741&action=edit
preprocessed .i file
~/build/gcc-r267646_obj/gcc/cc1 -fpreprocessed pr88598-3.i -mel -quiet
-dumpbase pr88598-3.c -mmsa -march=mips64r2 -mabi=64 -mllsc -mips64r2
-mno-shared -auxbase pr88598-3 -O2 -version -fdiagnostics-color=never
-fno-diagnostics-show-caret -fno-d
iagnostics-show-line-numbers -ftree-vectorize -fvect-cost-model=unlimited
-fno-common -fdump-tree-vect-details -ffast-math -fdump-tree-optimized -o
r267646.s -fdump-rtl-all-all -fdump-tree-all-all
GNU C17 (GCC) version 9.0.0 20190107 (experimental) (mips64el-linux-gnu)
compiled by GNU C version 5.5.0, GMP version 6.1.2, MPFR version 3.1.5,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C17 (GCC) version 9.0.0 20190107 (experimental) (mips64el-linux-gnu)
compiled by GNU C version 5.5.0, GMP version 6.1.2, MPFR version 3.1.5,
MPC version 1.0.3, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 2965e89c54734745a02038847659e86a
/home/xuchenghua/GCC/gcc_git_trunk/gcc/testsuite/gcc.dg/vect/pr88598-3.c: In
function ‘f1’:
/home/xuchenghua/GCC/gcc_git_trunk/gcc/testsuite/gcc.dg/vect/pr88598-3.c:17:1:
error: unrecognizable insn:
(insn 15 14 16 2 (set (reg:V16QI 212)
(subreg:V16QI (subreg:V4SF (reg:V4SI 201 [ _31 ]) 0) 0))
"/home/xuchenghua/GCC/gcc_git_trunk/gcc/testsuite/gcc.dg/vect/pr88598-3.c":16:10
-1
(nil))
during RTL pass: vregs
dump file: pr88598-3.c.234r.vregs
/home/xuchenghua/GCC/gcc_git_trunk/gcc/testsuite/gcc.dg/vect/pr88598-3.c:17:1:
internal compiler error: in extract_insn, at recog.c:2305
0x541354 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/paulhua/gcc_git_trunk/gcc/rtl-error.c:108
0x541370 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/paulhua/gcc_git_trunk/gcc/rtl-error.c:116
0xaf7a33 extract_insn(rtx_insn*)
/home/paulhua/gcc_git_trunk/gcc/recog.c:2305
0x882aab instantiate_virtual_regs_in_insn
/home/paulhua/gcc_git_trunk/gcc/function.c:1650
0x882aab instantiate_virtual_regs
/home/paulhua/gcc_git_trunk/gcc/function.c:2020
0x882aab execute
/home/paulhua/gcc_git_trunk/gcc/function.c:2069
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug c++/83417] Pointer-to-member template parameter with auto member type dependent container type does not work (C++17)
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Pavel I. Kryukov <pavel.kryukov at phystech dot edu> changed:
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----------------------------------------------------------------------------
CC| |pavel.kryukov at phystech dot edu
--- Comment #1 from Pavel I. Kryukov <pavel.kryukov at phystech dot edu> ---
The bug is reproduced with GCC 8.2 and trunk: https://godbolt.org/z/zOBJUw
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #21 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Think I might have something.
>From gcc-bugs-return-634004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 14:29:21 2019
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From: "lvenkatakumarchakka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89379] New: -Wformat is supposed not to give warning
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Bug ID: 89379
Summary: -Wformat is supposed not to give warning
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I have written code as follows:
#include<inttypes.h>
#include<stdio.h>
int main()
{
uint16_t value;
scanf( "%"PRIu16, &value );
}
seeing warning
$ gcc foo.c -Wformat
foo.c: In function ‘main’:
foo.c:7:9: warning: format ‘%u’ expects argument of type ‘unsigned int *’, but
argument 2 has type ‘uint16_t *’ {aka ‘short unsigned int *’} [-Wformat=]
scanf( "%"PRIu16, &value );
^~~ ~~~~~~
In file included from foo.c:1:
/usr/include/inttypes.h:103:19: note: format string is defined here
# define PRIu16 "u"
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
PRIu16 is for printf, you need SCNu16.
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Subject: [Bug c++/88826] ICE (segfault) when compiling invalid C++ code with -std=c++2a
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r266056.
>From gcc-bugs-return-634007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 16:14:32 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sun, 17 Feb 2019 16:14:00 -0000
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--- Comment #22 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 45742
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45742&action=edit
Patch that may work, but causes some regressions
The regressions are:
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O0 -flto -flto-partition=none -fuse-linker-plugin
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O2 -flto -flto-partition=none -fuse-linker-plugin -fno-fat-lto-objects
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O0 -flto -flto-partition=1to1 -fno-use-linker-plugin
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O2 -flto -flto-partition=1to1 -fno-use-linker-plugin
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O0 -flto -fuse-linker-plugin -fno-fat-lto-objects
FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
link, -O2 -flto -fuse-linker-plugin
Running
/home/ig25/Gcc/trunk/gcc/testsuite/gfortran.fortran-torture/compile/compile.exp
...
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O0 -flto -flto-partition=none -fuse-linker-plugin
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O2 -flto -flto-partition=none -fuse-linker-plugin -fno-fat-lto-objects
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O0 -flto -flto-partition=1to1 -fno-use-linker-plugin
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O2 -flto -flto-partition=1to1 -fno-use-linker-plugin
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O0 -flto -fuse-linker-plugin -fno-fat-lto-objects
FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o
link, -O2 -flto -fuse-linker-plugin
I will have to see if I can make any sense out of this.
>From gcc-bugs-return-634008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 16:33:36 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
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--- Comment #23 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #22)
> FAIL: gfortran.dg/lto/20091028-1 f_lto_20091028-1_0.o-f_lto_20091028-1_1.o
> link, -O0 -flto -flto-partition=none -fuse-linker-plugin
These test cases are invalid:
SUBROUTINE int_gen_ti_header_char( hdrbuf, hdrbufsize, itypesize, &
DataHandle, Element, VarName, Data, code )
CALL int_gen_ti_header_c ( hdrbuf, hdrbufsize, itypesize, 1, &
DataHandle, DummyData, DummyCount, code )
END SUBROUTINE int_gen_ti_header_char
certainly does not fit
void int_gen_ti_header_c_ (char * hdrbuf, int * hdrbufsize,
int * itypesize, int * typesize,
int * DataHandle, char * Data,
int * Count, int * code)
{
memcpy (typesize, p, sizeof(int)) ;
memcpy (Data, p, *Count * *typesize) ;
}
so it is a good sign that they are caught now :-)
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Sun, 17 Feb 2019 16:53:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Feb 17 16:52:40 2019
New Revision: 268969
URL: https://gcc.gnu.org/viewcvs?rev=268969&root=gcc&view=rev
Log:
PR c++/89217 - ICE with list-initialization in range-based for loop.
* constexpr.c (unshare_constructor): No longer static.
* cp-tree.h (unshare_constructor): Declare.
* semantics.c (finish_compound_literal): When dealing with a
non-dependent expression in a template, return the original
expression. Pass LOOKUP_NO_NARROWING to digest_init_flags.
* g++.dg/cpp0x/range-for37.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/range-for37.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89315] [9 Regression] Cannot convert to std::initializer_list - fails with gcc9 works with gcc8
Date: Sun, 17 Feb 2019 17:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89315
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r268969, will add the test.
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Subject: [Bug c++/89315] [9 Regression] Cannot convert to std::initializer_list - fails with gcc9 works with gcc8
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89315
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Feb 17 17:25:27 2019
New Revision: 268971
URL: https://gcc.gnu.org/viewcvs?rev=268971&root=gcc&view=rev
Log:
PR c++/89315
* g++.dg/cpp0x/initlist114.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist114.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89315] [9 Regression] Cannot convert to std::initializer_list - fails with gcc9 works with gcc8
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89315
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Lars, thanks for the report!
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r268969, I'm adding new tests.
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89356
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Done.
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Subject: [Bug c++/89356] [9 Regression] sorry, unimplemented: mangling implicit_conv_expr in nodejs8 package since r268321
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Feb 17 17:53:54 2019
New Revision: 268972
URL: https://gcc.gnu.org/viewcvs?rev=268972&root=gcc&view=rev
Log:
PR c++/89356
* g++.dg/abi/mangle68.C: New test.
* g++.dg/cpp0x/decltype69.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/abi/mangle68.C
trunk/gcc/testsuite/g++.dg/cpp0x/decltype69.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89367
--- Comment #4 from Frank Secilia <frank.secilia at gmail dot com> ---
Created attachment 45743
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45743&action=edit
alternative repro case using pointers to method
Here is a similar case using pointers to methods. I'm honestly not sure if this
is even allowed by the standard, but it works as expected with clang.
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
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--- Comment #5 from Frank Secilia <frank.secilia at gmail dot com> ---
Created attachment 45744
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alternative verbose compiler output
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Subject: [Bug c/89380] New: Multiple items in brace not working on nested macro
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89380
Bug ID: 89380
Summary: Multiple items in brace not working on nested macro
Product: gcc
Version: 8.2.0
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Additional report from bug#89373
#include <stdio.h>
// To see the bug
// gcc -DBUG -c x3.c
// Single item in braces is OK
// Multiple items in braces not OK
#ifdef BUG
#define MYLIST {1,2}
#else
#define MYLIST {1}
#endif
#define FRQ_RNG_160m_REGION1(md,lp,hp,v,a) \
{ 1810, 2, md, (lp), (hp), (v), (a) }
#define FRQ_RNG_HF(r,m,lp,hp,v,a) \
FRQ_RNG_160m_REGION##r(m, (lp), (hp), (v), (a))
struct foo {
int band;
int region;
int md[4];
int lp;
int hp;
int v;
int a;
};
struct foo myfoo = { 1,2, MYLIST,4,5,6,7 };
struct foo myfoo2 = FRQ_RNG_HF(1, MYLIST, 5,100,1,1);
int
main()
{
for(int i=0;i<4;++i) printf("kk %d,%d\n",i,myfoo.md[i]);
return 0;
}
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think these kind of questions should be handled in gcc-help@ rather than
here. Maybe in a standard C forum too.
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Subject: [Bug preprocessor/89380] Multiple items in brace not working on nested macro
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://stuff.mit.edu/afs/athena/project/rhel-doc/3/rhel-cpp-en-3/macro-pitfalls.html
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This won't work with macros pain and simple. There is nothing GCC can solve
here.
Doing this:
FRQ_RNG_HF(1, (MYLIST), 5,100,1,1);
Fixes the macro issue but you are left with:
struct foo myfoo2 = { 1810, 2, ({1,2}), 5, 100, 1, (1) };
Which is invalid code.
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Subject: [Bug preprocessor/89380] Multiple items in brace not working on nested macro
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
You can do dirty things with hiding the comma behind a macro, but don't do this
at home, kids.
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--- Comment #5 from mdblack98 at yahoo dot com ---
Why can't it be fixed by not counting commas between braces? That seems to be
the problem.
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Subject: [Bug preprocessor/89380] Multiple items in brace not working on nested macro
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to mdblack98 from comment #5)
> Why can't it be fixed by not counting commas between braces? That seems to
> be the problem.
Because then GCC will break some valid C code :). I think you should make a
proposal to the C Language committee if you really want this feature. NOTE
this feature will break backward compatibility with older standards but maybe
the C committee will agree with it. NOTE it won't be the default in GCC for a
long time (maybe around 10 years from now) if it gets accepted by the C
standards comittee today.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #18 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 17 21:14:14 2019
New Revision: 268973
URL: https://gcc.gnu.org/viewcvs?rev=268973&root=gcc&view=rev
Log:
2019-02-17 Harald Anlauf <anlauf@gmx.de>
PR fortran/89077
* decl.c (gfc_set_constant_character_len): Clear original string
representation after padding has been performed to target length.
PR fortran/89077
* gfortran.dg/transfer_simplify_12.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/transfer_simplify_12.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88299] [F18] COMMON in a legacy module produces bogus warnings in dependent code
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--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 17 21:19:20 2019
New Revision: 268974
URL: https://gcc.gnu.org/viewcvs?rev=268974&root=gcc&view=rev
Log:
2019-02-17 Harald Anlauf <anlauf@gmx.de>
PR fortran/88299
* resolve.c (resolve_common_blocks,resolve_common_vars): Move
check for obsolent COMMON feature in F2018 to better place.
PR fortran/88299
* gfortran.dg/pr88299.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr88299.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
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--- Comment #19 from Harald Anlauf <anlauf at gmx dot de> ---
The issues reported in comment #0, #1 and #3 should be fixed on trunk.
The fix for comment #0 has been backported to 7- and 8-branches.
Can the OP please confirm that the reported issues have been fixed?
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Subject: [Bug fortran/87734] [7/8/9 Regression] ICE in is_illegal_recursion check for character len= parameter
Date: Sun, 17 Feb 2019 21:30:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
CC| |tkoenig at gcc dot gnu.org
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The test case is now rejected with trunk, looks like a recent 9 regression:
ig25@linux-p51k:/tmp> gfortran m_vstring.f90
m_vstring.f90:24:30:
24 | pure function vstring_length ( this ) result ( length )
| 1
Error: MODULE-PROC procedure at (1) is already declared as EXTERNAL-PROC
procedure
m_vstring.f90:25:43:
25 | type ( t_vstring ) , intent(in) :: this
| 1
Error: Unexpected data declaration statement in CONTAINS section at (1)
m_vstring.f90:26:21:
26 | integer :: length
| 1
Error: Unexpected data declaration statement in CONTAINS section at (1)
m_vstring.f90:27:27:
27 | if ( associated ( this%chars ) ) then
| 1
Error: Symbol 'this' at (1) has no IMPLICIT type
m_vstring.f90:28:26:
28 | length = SIZE(this%chars)
| 1
Error: Symbol 'this' at (1) has no IMPLICIT type
m_vstring.f90:29:8:
29 | else
| 1
Error: Unexpected ELSE statement in CONTAINS section at (1)
m_vstring.f90:30:17:
30 | length = 0
| 1
Error: Unexpected assignment statement in CONTAINS section at (1)
m_vstring.f90:31:7:
31 | endif
| 1
Error: Expecting END MODULE statement at (1)
m_vstring.f90:32:5:
32 | end function vstring_length
| 1
Error: Expecting END MODULE statement at (1)
m_vstring.f90:10:26:
10 | public :: vstring_length
| 1
Error: Symbol 'vstring_length' at (1) has no IMPLICIT type
m_vstring.f90:17:21:
17 | character ( len = vstring_length ( this ) ) :: char_string
| 1
Error: 'vstring_length' at (1) is not a function
>From gcc-bugs-return-634030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 21:49:29 2019
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Subject: [Bug fortran/88299] [F18] COMMON in a legacy module produces bogus warnings in dependent code
Date: Sun, 17 Feb 2019 21:49:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #7 from Harald Anlauf <anlauf at gmx dot de> ---
Fixed.
>From gcc-bugs-return-634031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 22:26:35 2019
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Subject: [Bug fortran/68649] [7/8/9 Regression] note: code may be misoptimized unless -fno-strict-aliasing is used
Date: Sun, 17 Feb 2019 22:26:00 -0000
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--- Comment #25 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #24)
> The warnings are gone between revisions r265814 and r265942.
I can confirm that.
So, are there objections to just committing a test case and
closing this bug?
>From gcc-bugs-return-634032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 17 22:45:07 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-02/msg01415.ht
| |ml
--- Comment #24 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I just checked that the patch at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01415.html does indeed fix the
test case on POWER9.
>From gcc-bugs-return-634033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 00:05:24 2019
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Subject: [Bug fortran/68649] [7/8/9 Regression] note: code may be misoptimized unless -fno-strict-aliasing is used
Date: Mon, 18 Feb 2019 00:05:00 -0000
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--- Comment #26 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > The warnings are gone between revisions r265814 and r265942.
>
> I can confirm that.
> So, are there objections to just committing a test case and
> closing this bug?
My (shallow) understanding of the above thread was that the warning made sense.
If this is still true, then the missing warning is a regression.
If not, why?
>From gcc-bugs-return-634034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 00:17:54 2019
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
Date: Mon, 18 Feb 2019 00:17:00 -0000
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--- Comment #4 from Damian Rouson <damian at sourceryinstitute dot org> ---
I don't agree that the code submitted in this bug report is non-sensical. The
submitted example is very useful for code debugging purposes. I just spent a
couple of hours trying to isolate this same bug. Being able to print output
for a type with no components would have saved me the all the time that led to
finding this bug report.
Also, there are many uses for an empty derived type that serves as a
polymorphic hook on which to hang various type-bound procedures where the
choice of which procedure gets executed is determined by the dynamic type of
the passed-object dummy argument. Moreover, if a type with no components
appears one several objects being output, the user might like to see some text
to know that the type was there. Such types crop up frequently in the Strategy
object-oriented design pattern.
>From gcc-bugs-return-634035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 01:04:23 2019
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Subject: [Bug c++/89381] New: Implicit copy constructor cannot be generated after unrelated class definition
Date: Mon, 18 Feb 2019 01:04:00 -0000
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Bug ID: 89381
Summary: Implicit copy constructor cannot be generated after
unrelated class definition
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic, needs-reduction, rejects-valid
Severity: normal
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For some reason `bar` makes `foo` not copy-constructible. It compiles if
you remove `bar`, or force compiler to generate copy-constructor before
`bar` definition.
#include <variant>
struct foo : std::variant<long, int>
{
using std::variant<long, int>::variant;
using std::variant<long, int>::operator=;
};
//using workaround = decltype(foo{*static_cast<foo const*>(0)});
struct bar
{
bar& operator=(foo ve)
{
value = std::move(ve);
return *this;
}
foo value;
};
int main()
{
foo a;
foo b{a};
}
prog.cc: In function 'int main()':
prog.cc:26:12: error: use of deleted function 'constexpr foo::foo(const foo&)'
26 | foo b{a};
| ^
prog.cc:3:8: note: 'constexpr foo::foo(const foo&)' is implicitly declared as
deleted because 'foo' declares a move constructor or move assignment operator
3 | struct foo : std::variant<long, int>
| ^~~
1
https://godbolt.org/z/DylgFW
>From gcc-bugs-return-634036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 02:11:44 2019
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Subject: [Bug c++/89382] New: Segmentation fault when doing (depth recursive) Template Metaprogramming
Date: Mon, 18 Feb 2019 02:11:00 -0000
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Bug ID: 89382
Summary: Segmentation fault when doing (depth recursive)
Template Metaprogramming
Product: gcc
Version: 8.2.1
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Created attachment 45745
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45745&action=edit
the preprocessed file
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
$ g++ -Wall -Wextra test.cpp -ftemplate-depth=100000
g++: internal compiler error: Segmentation fault signal terminated program
cc1plus
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
>From gcc-bugs-return-634037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 02:15:23 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
Date: Mon, 18 Feb 2019 02:14:00 -0000
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--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Damian Rouson from comment #4)
> I don't agree that the code submitted in this bug report is non-sensical.
> The submitted example is very useful for code debugging purposes. I just
> spent a couple of hours trying to isolate this same bug. Being able to
> print output for a type with no components would have saved me the all the
> time that led to finding this bug report.
>
Ah! We often don't see the importance of emptyness, or the 'null' case so to
speak. That does make sense to me. How does this fall out w.r.t the Fortran
Standard. Is it explicitly required, processor defined, or our own extension?
>From gcc-bugs-return-634038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 02:16:08 2019
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Subject: [Bug c++/89382] Segmentation fault when doing (depth recursive) Template Metaprogramming
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>-ftemplate-depth=100000
This is why there is a decent limit.
Increase the allocated stack via ulimit.
>From gcc-bugs-return-634039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 02:54:22 2019
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
Date: Mon, 18 Feb 2019 02:54:00 -0000
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--- Comment #6 from Damian Rouson <damian at sourceryinstitute dot org> ---
I don't see anything in the standard related to the existence or non-existence
of components in derived-type output. In case it helps, the NAG and Intel
compilers both print "Hello world!" with the submitted code, but the Cray
compiler prints nothing, which matches gfortran's behavior. I'll contact Cray
technical support to see if they agree it's a bug.
--- Comment #7 from Damian Rouson <damian at sourceryinstitute dot org> ---
I don't see anything in the standard related to the existence or non-existence
of components in derived-type output. In case it helps, the NAG and Intel
compilers both print "Hello world!" with the submitted code, but the Cray
compiler prints nothing, which matches gfortran's behavior. I'll contact Cray
technical support to see if they agree it's a bug.
>From gcc-bugs-return-634040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 02:54:23 2019
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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--- Comment #6 from Damian Rouson <damian at sourceryinstitute dot org> ---
I don't see anything in the standard related to the existence or non-existence
of components in derived-type output. In case it helps, the NAG and Intel
compilers both print "Hello world!" with the submitted code, but the Cray
compiler prints nothing, which matches gfortran's behavior. I'll contact Cray
technical support to see if they agree it's a bug.
--- Comment #7 from Damian Rouson <damian at sourceryinstitute dot org> ---
I don't see anything in the standard related to the existence or non-existence
of components in derived-type output. In case it helps, the NAG and Intel
compilers both print "Hello world!" with the submitted code, but the Cray
compiler prints nothing, which matches gfortran's behavior. I'll contact Cray
technical support to see if they agree it's a bug.
>From gcc-bugs-return-634041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 03:06:54 2019
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Subject: [Bug preprocessor/89373] macro expansion not counting braces correctly
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You can use a variadic macro that allows multiple preprocessor tokens separated
by commas.
There's no GCC bug here.
>From gcc-bugs-return-634042-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 03:08:03 2019
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Subject: [Bug preprocessor/89380] Multiple items in brace not working on nested macro
Date: Mon, 18 Feb 2019 03:08:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> I think these kind of questions should be handled in gcc-help@ rather than
> here. Maybe in a standard C forum too.
^^ this,
"How do I do funky things with the preprocessor?" is not a GCC bug.
>From gcc-bugs-return-634043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 03:26:13 2019
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Subject: [Bug c++/89381] [7/8/9 Regression] Implicit copy constructor cannot be generated after unrelated class definition
Date: Mon, 18 Feb 2019 03:26:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |5.5.0
Keywords|diagnostic, needs-reduction |
Last reconfirmed| |2019-02-18
CC| |jason at gcc dot gnu.org
Ever confirmed|0 |1
Summary|Implicit copy constructor |[7/8/9 Regression] Implicit
|cannot be generated after |copy constructor cannot be
|unrelated class definition |generated after unrelated
| |class definition
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:
template<typename T>
struct base
{
base() { }
base(const base&) { }
base(base&&) { }
base& operator=(const base&) { return *this; }
base& operator=(base&&) { return *this; }
};
struct foo : base<int>
{
using base<int>::base;
using base<int>::operator=;
};
//using workaround = decltype(foo{*static_cast<foo const*>(0)});
struct bar
{
bar& operator=(foo ve)
{
value = ve;
return *this;
}
foo value;
};
int main()
{
foo a;
foo b{a};
}
Regressed with r235002
PR c++/70528
* class.c (type_has_constexpr_default_constructor): Return true
for an implicitly declared constructor.
>From gcc-bugs-return-634044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 07:40:03 2019
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
Date: Mon, 18 Feb 2019 07:40:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Any update on this David?
>From gcc-bugs-return-634045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 08:01:33 2019
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Subject: [Bug c++/89383] New: [9 Regression] libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
Date: Mon, 18 Feb 2019 08:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89383
Bug ID: 89383
Summary: [9 Regression] libcpp/line-map.c:748:15: runtime
error: shift exponent 32 is too large for 32-bit type
'unsigned int'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
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One can see it when running self tests:
$ ./xgcc -B./ -B/home/marxin/bin/gcc/x86_64-pc-linux-gnu/bin/ -isystem
/home/marxin/bin/gcc/x86_64-pc-linux-gnu/include -isystem
/home/marxin/bin/gcc/x86_64-pc-linux-gnu/sys-include
-L/dev/shm/objdir/gcc/../ld -xc -nostdinc /dev/null -S -o /dev/null
-fself-test=/home/marxin/Programming/gcc/gcc/testsuite/selftests
../../libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large
for 32-bit type 'unsigned int'
#0 0x44cc736 in linemap_line_start(line_maps*, unsigned int, unsigned int)
../../libcpp/line-map.c:748
#1 0xf66b64 in test_capture_of_dump_calls ../../gcc/dumpfile.c:2192
#2 0x4460203 in selftest::for_each_line_table_case(void
(*)(selftest::line_table_case const&)) ../../gcc/input.c:3550
#3 0xf6d91e in selftest::dumpfile_c_tests() ../../gcc/dumpfile.c:2693
#4 0x4278940 in selftest::run_tests() ../../gcc/selftest-run-tests.c:62
#5 0x200ffbf in toplev::run_self_tests() ../../gcc/toplev.c:2240
#6 0x20103e4 in toplev::main(int, char**) ../../gcc/toplev.c:2318
#7 0x43728f1 in main ../../gcc/main.c:39
#8 0x7ffff6e7bb7a in __libc_start_main ../csu/libc-start.c:308
#9 0x861559 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/cc1+0x861559)
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Subject: [Bug c++/89383] [9 Regression] libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
Date: Mon, 18 Feb 2019 08:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89383
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-18
Known to work| |8.2.0
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Mine, I've got a patch.
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Subject: [Bug fortran/89364] Assumed rank object with incorrect values for shape and bounds
Date: Mon, 18 Feb 2019 08:05:00 -0000
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--- Comment #2 from Bader at lrz dot de <Bader at lrz dot de> ---
(In reply to Dominique d'Humieres from comment #1)
> Why do you want the shape to be [4,-1]?
The Fortran 2018 standard explicitly prescribes this in 16.9.172, para 5.
Regards
Reinhold
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Subject: [Bug ipa/89306] [8/9 regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Mon, 18 Feb 2019 08:21:00 -0000
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 18 08:21:23 2019
New Revision: 268979
URL: https://gcc.gnu.org/viewcvs?rev=268979&root=gcc&view=rev
Log:
Come up with fast {function,call}_summary classes (PR ipa/89306).
2019-02-18 Martin Liska <mliska@suse.cz>
PR ipa/89306
* cgraph.c (symbol_table::create_edge): Set m_summary_id to -1
by default.
(symbol_table::free_edge): Recycle m_summary_id.
* cgraph.h (get_summary_id): New.
(symbol_table::release_symbol): Set m_summary_id to -1
by default.
(symbol_table::allocate_cgraph_symbol): Recycle m_summary_id.
* ipa-fnsummary.c (ipa_fn_summary_t): Switch from
function_summary to fast_function_summary.
* ipa-fnsummary.h (ipa_fn_summary_t): Likewise.
* ipa-pure-const.c (class funct_state_summary_t):
Switch from function_summary to fast_function_summary.
* ipa-reference.c (class ipa_ref_var_info_summary_t): Likewise.
(class ipa_ref_opt_summary_t): Switch from function_summary
to fast_function_summary.
* symbol-summary.h (class function_summary_base): New class
that is created from base of former function_summary.
(function_summary_base::unregister_hooks): New.
(class function_summary): Inherit from function_summary_base.
(class call_summary_base): New class
that is created from base of former call_summary.
(class call_summary): Inherit from call_summary_base.
(struct is_same): New.
(class fast_function_summary): New summary class.
(class fast_call_summary): New summary class.
* vec.h (vec_safe_grow_cleared): New function.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cgraph.c
trunk/gcc/cgraph.h
trunk/gcc/ipa-fnsummary.c
trunk/gcc/ipa-fnsummary.h
trunk/gcc/ipa-pure-const.c
trunk/gcc/ipa-reference.c
trunk/gcc/symbol-summary.h
trunk/gcc/vec.h
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Subject: [Bug ipa/89306] [8 Regression] Hash based IPA summaries are too slow and consume up to 80% of IPA optimization time.
Date: Mon, 18 Feb 2019 08:23:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Known to work|9.0 |
Resolution|--- |FIXED
Summary|[8/9 regression] Hash based |[8 Regression] Hash based
|IPA summaries are too slow |IPA summaries are too slow
|and consume up to 80% of |and consume up to 80% of
|IPA optimization time. |IPA optimization time.
Known to fail| |9.0
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk. It's an infrastructure change, thus I'm not planning to
backport that to GCC 8.
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Mon, 18 Feb 2019 08:41:00 -0000
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--- Comment #19 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 7 Feb 2019, hubicka at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
>
> --- Comment #16 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
> GDB PR is now https://sourceware.org/bugzilla/show_bug.cgi?id=24189
> lldb complains too
> error: libxul.so {0x00000077}: invalid abbreviation code 42879271, please file
> a bug and attach the file at the start of this error message
> warning: (x86_64)
> /aux/hubicka/firefox2018-release-trunktest2/dist/bin/libxul.so DWARF compile
> unit extends beyond its bounds cu 0x00000000 at 0xffffffff
Sounds like the DWARF is bogus. But unless you have a reasonably
small testcase (w/o -fdebug-types-section) I don't want to see it ;)
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Subject: [Bug middle-end/89288] [9 Regression] ICE in tree_code_size, at tree.c:865
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What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug middle-end/89292] [9 regression] test case gcc.target/powerpc/rs6000-fpint.c fails after r268705
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 08:45:58 2019
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Mon, 18 Feb 2019 08:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89294
Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-634054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 08:51:54 2019
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89384] New: CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
Date: Mon, 18 Feb 2019 08:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89384
Bug ID: 89384
Summary: CONTIGUOUS dummy argument in BIND(C) interface
incorrect when actual is non-contiguous
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: Bader at lrz dot de
Target Milestone: ---
Created attachment 45746
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45746&action=edit
test code
Fortran 2018 permits CONTIGUOUS dummy arguments also in BIND(C) interfaces.
However, currently the passing of a compactified copy required for
non-contiguous actual arguments does not work correctly in this context. A test
case is attached. Note that the problem does not arise if BIND(C) is removed
from the procedure definition.
>From gcc-bugs-return-634055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 08:56:32 2019
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Subject: [Bug tree-optimization/89296] [7/8/9 Regression] tree copy-header masking uninitialized warning
Date: Mon, 18 Feb 2019 08:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89296
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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Assignee|kugan at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |7.5
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
This gimple_set_no_warning is guarded by
/* If the loop has the form "for (i = j; i < j + 10; i++)" then
this copying can introduce a case where we rely on undefined
signed overflow to eliminate the preheader condition, because
we assume that "j < j + 10" is true. We don't want to warn
about that case for -Wstrict-overflow, because in general we
don't warn about overflow involving loops. Prevent the
warning by setting the no_warning flag in the condition. */
if (warn_strict_overflow > 0)
{
so it only shows that the _no_warning stuff is too coarse (we know about that).
We can improve the above to non-equality compares, catching the case in
question.
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Subject: [Bug fortran/89364] Assumed rank object with incorrect values for shape and bounds
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Mon, 18 Feb 2019 08:59:00 -0000
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--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Mon Feb 18 08:59:04 2019
New Revision: 268980
URL: https://gcc.gnu.org/viewcvs?rev=268980&root=gcc&view=rev
Log:
[PR 89209] Avoid segfault in a peculiar corner case in SRA
2019-02-18 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/89209
* tree-sra.c (create_access_replacement): New optional parameter
reg_tree. Use it as a type if non-NULL and access type is not of
a register type.
(get_repl_default_def_ssa_name): New parameter REG_TYPE, pass it
to create_access_replacement.
(sra_modify_assign): Pass LHS type to get_repl_default_def_ssa_name.
Check lacc is non-NULL before attempting to re-create it on the RHS.
testsuite/
* gcc.dg/tree-ssa/pr89209.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr89209.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-sra.c
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-634059-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 09:04:26 2019
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Subject: [Bug gcov-profile/89307] -fprofile-generate binary may be too slow in multithreaded environment due to cache-line conflicts on counters
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, use of TLS has
* size of counters overhead (one could use char sized TLS counters and
update the global ones with locking on overflow)
* tear-down/build-up cost at thread termination/creation
the advantage is of course it's simple implementation-wise.
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89385] New: Incorrect members of C descriptor for an allocatable object
Date: Mon, 18 Feb 2019 09:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89385
Bug ID: 89385
Summary: Incorrect members of C descriptor for an allocatable
object
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: Bader at lrz dot de
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Created attachment 45747
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45747&action=edit
test code
The attached test case provides a C and a Fortran file. If built with
gcc -c alloc_01_pos.c
gfortran alloc_01_pos.f90 alloc_01_pos.o
the resulting executable prints failure messages with respect to many members
of the C descriptor (elem_len, type, rank, attribute, dim[]).
Regards
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Subject: [Bug tree-optimization/89314] [7 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/89317] Ineffective code from std::copy
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-02-18
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
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Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug fortran/89385] Incorrect members of C descriptor for an allocatable object
Date: Mon, 18 Feb 2019 09:16:00 -0000
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--- Comment #1 from Bader at lrz dot de <Bader at lrz dot de> ---
Further comment: Analogous failures also happen for descriptors of
assumed-shape or POINTER objects. I suggest that I re-test these when this bug
is fixed and submit a separate report if still necessary.
Regards
Reinhold
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Subject: [Bug ipa/89009] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89325] [7/8/9 Regression] False warnings about "optimization attribute" on operators when -fno-ipa-cp-clone
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Priority|P3 |P2
Target Milestone|--- |7.5
Summary|False warnings about |[7/8/9 Regression] False
|"optimization attribute" on |warnings about
|operators when |"optimization attribute" on
|-fno-ipa-cp-clone |operators when
| |-fno-ipa-cp-clone
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Subject: [Bug other/89327] Joined options without RejectsNegative
Date: Mon, 18 Feb 2019 09:17:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yeah, all of them look to miss RejectNegative
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Subject: [Bug c++/89331] [8/9 Regression] internal compiler error: in build_simple_base_path, at cp/class.c:589
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89384] [9 Regression] CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
Date: Mon, 18 Feb 2019 09:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89384
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |7.4.0, 8.2.0
Keywords| |wrong-code
Last reconfirmed| |2019-02-18
Ever confirmed|0 |1
Summary|CONTIGUOUS dummy argument |[9 Regression] CONTIGUOUS
|in BIND(C) interface |dummy argument in BIND(C)
|incorrect when actual is |interface incorrect when
|non-contiguous |actual is non-contiguous
Target Milestone|--- |9.0
Known to fail| |9.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed between revisions r267817 (2019-01-10, OK) and r268015 (2019-01-17,
FAIL), likely r267905 (pr57992).
>From gcc-bugs-return-634072-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 09:22:45 2019
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Subject: [Bug tree-optimization/89332] Missed detection of dead stores to array in a loop
Date: Mon, 18 Feb 2019 09:22:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-18
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
In general we lack sth like (sub-)array liveness analysis to guide loop opts
that would help here. Yes, aggressive unrolling makes scalar opts do the
job but that's hardly the solution we should strive for.
These kind of testcases also look quite artificial.
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Subject: [Bug inline-asm/89334] unsupported size for integer register
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-18
Ever confirmed|0 |1
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed for diagnostic improvement.
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
Date: Mon, 18 Feb 2019 09:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634075-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 09:31:23 2019
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Rafael Avila de Espindola from comment #10)
> Maybe we should have a general flag that disables all warnings where gcc
> cannot prove that there is a path from a function entry to the broken
> statement?
But what about proving there is a path from program entry to the function?
And now reason why those two are different.
>From gcc-bugs-return-634076-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 09:32:24 2019
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Subject: [Bug c/89340] [7/8 Regression] ICE in function_and_variable_visibility, at ipa-visibility.c:707
Date: Mon, 18 Feb 2019 09:32:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634077-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 09:33:06 2019
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Subject: [Bug ipa/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |accepts-invalid
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Subject: [Bug middle-end/89351] internal compiler error: in exact_div, at poly-int.h:2139 with -fgnu-tm
Date: Mon, 18 Feb 2019 09:38:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-18
Summary|internal compiler error: in |internal compiler error: in
|exact_div, at |exact_div, at
|poly-int.h:2139 |poly-int.h:2139 with
| |-fgnu-tm
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC seeing dups with bitfield handling of TM.
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Subject: [Bug rtl-optimization/89354] [7 Regression] Combine pass yields wrong code with -O2 and -msse2 for 32bit target
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
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Subject: [Bug lto/89358] [7/8/9 Regression] Combining -std=c++14 and -std=c++17 objects gives ODR warnings
Date: Mon, 18 Feb 2019 09:44:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/89383] [9 Regression] libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
Date: Mon, 18 Feb 2019 09:46:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 18 09:46:19 2019
New Revision: 268981
URL: https://gcc.gnu.org/viewcvs?rev=268981&root=gcc&view=rev
Log:
Use 1UL constant in order to not overflow (PR c++/89383).
2019-02-18 Martin Liska <mliska@suse.cz>
PR c++/89383
* line-map.c (linemap_line_start): Use 1UL in order
to not overflow.
Modified:
trunk/libcpp/ChangeLog
trunk/libcpp/line-map.c
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Subject: [Bug target/89361] [7/8/9 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
Date: Mon, 18 Feb 2019 09:47:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/89383] [9 Regression] libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libbacktrace/89362] [8/9 regression] zlib support breaks libbacktrace on strict-alignment platforms
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Subject: [Bug c++/89370] Output std::string in diagnostics instead of std::__cxx11::basic_string<_CharT, _Traits, _Alloc>
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/89378] [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c -mmsa (internal compiler error)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
MSA is new, so not sure if it is a regression. Please fill out known-to-work.
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Subject: [Bug c++/89381] [7/8/9 Regression] Implicit copy constructor cannot be generated after unrelated class definition
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Subject: [Bug c++/89383] [9 Regression] libcpp/line-map.c:748:15: runtime error: shift exponent 32 is too large for 32-bit type 'unsigned int'
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Subject: [Bug d/89177] unaligned memory access in libphobos
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--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Have started a test on my ARM hardware, it will take a few days to run the
complete test suite.
BTW: I also have an issue with the install script of libphobos:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01322.html
how can this be resolved ?
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From: "ed at catmur dot uk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/80438] Variadic template class argument deduction failure from variadic constructor deduction guide
Date: Mon, 18 Feb 2019 10:18:00 -0000
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Ed Catmur <ed at catmur dot uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ed at catmur dot uk
--- Comment #2 from Ed Catmur <ed at catmur dot uk> ---
Workaround: add an N=1+ deduction guide:
// existing
template <typename... Us>
foo(Us...) -> foo<Us...>;
// additional, for g++
template <typename U, typename... Us>
foo(U, Us...) -> foo<U, Us...>;
>From gcc-bugs-return-634091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 10:47:49 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89386] New: Generation of vectorized MULHRS (Multiply High with Round and Scale) instruction
Date: Mon, 18 Feb 2019 10:47:00 -0000
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Bug ID: 89386
Summary: Generation of vectorized MULHRS (Multiply High with
Round and Scale) instruction
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This PR is similar to PR85693 and PR85694, where missing generation of
vectorized SAD (Sum of Absolute Difference) and AVG (Average) instruction was
reported.
Following code:
--cut here--
#define N 1024
unsigned short as[N], bs[N], cs[N];
void
foo_short (void)
{
int i;
for (i = 0; i < N; i++)
as[i] = ((((int)bs[i] * (int)cs[i]) >> 14) + 1) >> 1;
}
--cut here--
should vectorize with pmulhrsw SSSE3 instruction.
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Subject: [Bug c++/88680] [9 Regression] bogus -Wtype-limits for constant expressions after r267272
Date: Mon, 18 Feb 2019 10:57:00 -0000
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #4)
> Should be fixed by r268961.
The new test fails on arm-eabi (works on arm-linux-gnueabi), probably because
it defaults to short enum:
FAIL: g++.dg/wrappers/pr88680.C -std=gnu++14 (test for excess errors)
FAIL: g++.dg/wrappers/pr88680.C -std=gnu++17 (test for excess errors)
The logs say:
Excess errors:
/gcc/testsuite/g++.dg/wrappers/pr88680.C:10:20: warning: comparison is always
true due to limited range of data type [-Wtype-limits]
/gcc/testsuite/g++.dg/wrappers/pr88680.C:20:11: warning: comparison is always
true due to limited range of data type [-Wtype-limits]
/gcc/testsuite/g++.dg/wrappers/pr88680.C:46:9: warning: comparison is always
true due to limited range of data type [-Wtype-limits]
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Subject: [Bug target/89361] [7/8/9 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
Date: Mon, 18 Feb 2019 11:17:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 18 11:16:33 2019
New Revision: 268983
URL: https://gcc.gnu.org/viewcvs?rev=268983&root=gcc&view=rev
Log:
PR target/89361
* config/s390/s390.c (s390_indirect_branch_attrvalue,
s390_indirect_branch_settings): Define unconditionally.
(s390_set_current_function): Likewise, but guard the whole body except
the s390_indirect_branch_settings call with
#if S390_USE_TARGET_ATTRIBUTE.
(TARGET_SET_CURRENT_FUNCTION): Redefine unconditionally.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.c
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Subject: [Bug target/89369] [9 Regression] pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203
Date: Mon, 18 Feb 2019 11:21:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 18 11:20:43 2019
New Revision: 268984
URL: https://gcc.gnu.org/viewcvs?rev=268984&root=gcc&view=rev
Log:
PR target/89369
* config/s390/s390.md (*r<noxa>sbg_<mode>_srl_bitmask,
*r<noxa>sbg_<mode>_sll, *r<noxa>sbg_<mode>_srl): Don't construct
pattern in a temporary buffer.
(*r<noxa>sbg_sidi_srl): Likewise. Always use 32 as I3 rather
than 64-operands[2].
* gcc.c-torture/execute/pr89369.c: New test.
* gcc.target/s390/md/rXsbg_mode_sXl.c (rosbg_si_srl,
rxsbg_si_srl): Expect last 3 operands 32,63,62 rather than
34,63,62.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr89369.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.md
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/s390/md/rXsbg_mode_sXl.c
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Subject: [Bug target/89361] [7/8 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] s390 |[7/8 Regression] s390
|broken without |broken without
|S390_USE_TARGET_ATTRIBUTE, |S390_USE_TARGET_ATTRIBUTE,
|likely since r257489 |likely since r257489
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug target/89369] [9 Regression] pseudo-RNG miscompiled on s390x-linux with -O2 -march=zEC12 -mtune=z13 starting with r266203
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45748
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45748&action=edit
patch
Thanks for working on this. For
extern float x;
void foo()
{
}
I still see the basetype DIE for float emitted. When using
struct S { int i; };
extern struct S x;
the DIE for S disappears (good) but the one for int remains. That looks like
a pre-exisiting issue with unused debug-types elimination though.
I have attached a patch variant that applies to trunk and maintained branches
that fixes some coding-style issues, adds a testcase and a ChangeLog entry.
Can you see if it looks fine to you and propose the patch on
gcc-patches@gcc.gnu.org ?
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Subject: [Bug c++/89387] [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Mon, 18 Feb 2019 12:08:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Known to work| |8.2.0
Keywords| |ice-on-valid-code
Last reconfirmed| |2019-02-18
CC| |aoliva at gcc dot gnu.org
Ever confirmed|0 |1
Target Milestone|--- |9.0
Known to fail| |9.0
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Subject: [Bug c++/89387] New: [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Mon, 18 Feb 2019 12:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89387
Bug ID: 89387
Summary: [9 Regression] ICE in maybe_generic_this_capture at
gcc/cp/lambda.c:945 since r268851
Product: gcc
Version: unknown
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Created attachment 45749
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45749&action=edit
Unreduced test-case
I see following ICE:
$ c++ ice.ii -c
...
0xf2d19f crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff7b79e0f ???
/usr/src/debug/glibc-2.29-1.3.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x9141f1 maybe_generic_this_capture(tree_node*, tree_node*)
/home/marxin/Programming/gcc/gcc/cp/lambda.c:945
0x968904 cp_parser_postfix_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:7331
0x975766 cp_parser_unary_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:8459
0x951402 cp_parser_cast_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:9345
0x951bea cp_parser_binary_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:9447
0x952b29 cp_parser_assignment_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:9744
0x952e92 cp_parser_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:9911
0x956374 cp_parser_expression_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:11449
0x961003 cp_parser_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:11245
0x962550 cp_parser_statement_seq_opt
/home/marxin/Programming/gcc/gcc/cp/parser.c:11592
0x962627 cp_parser_compound_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:11546
0x97cb85 cp_parser_implicitly_scoped_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:12961
0x961f3b cp_parser_selection_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:11766
0x961f3b cp_parser_statement
/home/marxin/Programming/gcc/gcc/cp/parser.c:11111
0x962550 cp_parser_statement_seq_opt
/home/marxin/Programming/gcc/gcc/cp/parser.c:11592
0x963a8e cp_parser_lambda_body
/home/marxin/Programming/gcc/gcc/cp/parser.c:10978
0x963a8e cp_parser_lambda_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:10454
0x963a8e cp_parser_primary_expression
/home/marxin/Programming/gcc/gcc/cp/parser.c:5379
I'm reducing that..
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88714
--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 18 12:52:36 2019
New Revision: 268985
URL: https://gcc.gnu.org/viewcvs?rev=268985&root=gcc&view=rev
Log:
PR bootstrap/88714
* config/arm/arm.md (*arm_movdi, *movdf_soft_insn): Use "r" instead of
"q" constraint.
* config/arm/vfp.md (*movdi_vfp): Likewise.
* config/arm/ldrdstrd.md (*arm_ldrd, *arm_strd): Use "r" instead of
"q" constraint for operands[0].
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
trunk/gcc/config/arm/ldrdstrd.md
trunk/gcc/config/arm/vfp.md
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89296] [7/8/9 Regression] tree copy-header masking uninitialized warning
Date: Mon, 18 Feb 2019 12:56:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Feb 18 12:56:15 2019
New Revision: 268986
URL: https://gcc.gnu.org/viewcvs?rev=268986&root=gcc&view=rev
Log:
2019-02-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/89296
* tree-ssa-loop-ch.c (ch_base::copy_headers): Restrict setting
of no-warning flag to cases that might emit the bogus warning.
* gcc.dg/uninit-pr89296.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/uninit-pr89296.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-ch.c
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Subject: [Bug tree-optimization/89296] [7/8 Regression] tree copy-header masking uninitialized warning
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] tree |[7/8 Regression] tree
|copy-header masking |copy-header masking
|uninitialized warning |uninitialized warning
Known to fail|9.0 |
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug c++/82380] [concepts] Error when using requires constraint with attributes
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Avi Kivity <avi@cloudius-systems.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |avi@cloudius-systems.com
--- Comment #1 from Avi Kivity <avi@cloudius-systems.com> ---
Suffering from the same problem (but with [[deprecated]] instead).
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89388] New: Component selection for assumed-size DT array
Date: Mon, 18 Feb 2019 13:53:00 -0000
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Bug ID: 89388
Summary: Component selection for assumed-size DT array
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: Bader at lrz dot de
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Created attachment 45750
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45750&action=edit
test code
The attached test case, which is non-conforming (because it requires
copy-in/out of an assumed-size object) compiles and creates an executable that
crashes with a SIGSEGV. It would be good if a compile-time error could be
created for this case. E.g. ifort says:
The upper bound shall not be omitted in the last dimension of a reference to an
assumed size array.
nagfor says:
dt_ass_neg_03.f90, line 10: Invalid appearance of assumed-size array name Y
The Fortran 2018 constraint that applies is C1002 (10.1.2.2)
Regards
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89387] [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Mon, 18 Feb 2019 14:11:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Reduced test-case:
$ cat ice.ii
template <template <typename, typename> class a> class b {
using c = int;
using f = a<unsigned, c>;
f::d;
void e() {
[&] { d(); };
}
void d();
};
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Subject: [Bug c++/80871] Template partial ordering considered non-ambiguous with deduced and non-deduced parameter packs
Date: Mon, 18 Feb 2019 14:42:00 -0000
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Ed Catmur <ed at catmur dot uk> changed:
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--- Comment #2 from Ed Catmur <ed at catmur dot uk> ---
See also #80438
>From gcc-bugs-return-634107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 14:43:01 2019
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From: "matmal01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Mon, 18 Feb 2019 14:43:00 -0000
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--- Comment #4 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
There were similar problems in handling the stack pointer with subs/adds
instructions elsewhere in the aarch64 backend.
Patch proposed & being worked on here:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01458.html
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Subject: [Bug c++/80871] Template partial ordering considered non-ambiguous with deduced and non-deduced parameter packs
Date: Mon, 18 Feb 2019 14:43:00 -0000
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--- Comment #3 from Ed Catmur <ed at catmur dot uk> ---
Sorry. See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80438
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Subject: [Bug fortran/89388] Component selection for assumed-size DT array
Date: Mon, 18 Feb 2019 14:47:00 -0000
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--- Comment #1 from Bader at lrz dot de <Bader at lrz dot de> ---
Actually, C1002 applies for expressions, which is not relevant for this case
... the only (non-constraint) restriction that one could (indirectly) argue to
apply is
9.5.2 para2, inasmuch as the shape is needed to create the contiguous element
sequence.
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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Jeffrey A. Law <law at redhat dot com> changed:
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--- Comment #10 from Jeffrey A. Law <law at redhat dot com> ---
So fix-r4000-10.c is the only one that's still failing for me on the trunk.
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #10 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
Created attachment 45751
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45751&action=edit
Work-in-progress fix
This patch is pretty raw. It only handles .data, .rodata and .bss.
It does not handle reallocation sections and multi-TU case (though the latter
apparently needs linker support).
I suppose we should introduce a separate flag for this kind of protection
(ideas are welcome). Also I have to pass the whole list of varpool nodes one
extra time to detect sections which need protection; maybe it could be
optimized.
Comments?
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #11 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
(In reply to Martin Liška from comment #9)
> (In reply to Andrey Drobyshev from comment #8)
>
> Great you've been working on that Andrey.
>
> > I recently started to work on this issue as well. I managed to put a dummy
> > global variable into .data, .rodata and .bss as follows:
> >
> > static void
> > emit_globals_protector(void)
> > {
> > tree decl, id, init;
> >
> > id = get_identifier ("__asan_dummy_global");
> > decl = build_decl (BUILTINS_LOCATION, VAR_DECL, id, integer_type_node);
> > init = build_one_cst(integer_type_node);
> >
> > SET_DECL_ASSEMBLER_NAME (decl, id);
> > TREE_ADDRESSABLE (decl) = 1;
> > DECL_ARTIFICIAL (decl) = 1;
> > TREE_STATIC (decl) = 1;
> > TREE_PUBLIC (decl) = 1;
> > TREE_USED (decl) = 1;
> >
> > TREE_READONLY (init) = 1; // controls whether variable goes to
> > .rodata or .data
> > TREE_STATIC (init) = 1;
> > DECL_INITIAL (decl) = init; // controls whether variable gets
> > initialized or goes to .bss
> >
> > varpool_node::add(decl);
> > }
> >
> > Calling varpool_node::add() makes sure that created dummy global goes first
> > into the target section, as it leads to call to assemble_variable():
> >
> > #0 categorize_decl_for_section (decl=0x7ffff7ff4e10, reloc=0) at
> > ../../gcc/varasm.c:6378
> > #1 0x0000000001096112 in default_elf_select_section (decl=0x7ffff7ff4e10,
> > reloc=0, align=256) at ../../gcc/varasm.c:6499
> > #2 0x00000000010b6ce3 in x86_64_elf_select_section (decl=0x7ffff7ff4e10,
> > reloc=0, align=256) at ../../gcc/config/i386/i386.c:6549
> > #3 0x000000000108afd3 in get_variable_section (decl=0x7ffff7ff4e10,
> > prefer_noswitch_p=false) at ../../gcc/varasm.c:1170
> > #4 0x000000000108d70b in assemble_variable (decl=0x7ffff7ff4e10,
> > top_level=0, at_end=1, dont_output_data=0) at ../../gcc/varasm.c:2206
> > #5 0x000000000109fd8a in varpool_node::assemble_decl (this=0x7ffff7281100)
> > at ../../gcc/varpool.c:582
> > #6 0x0000000000917f92 in varpool_node::finalize_decl (decl=0x7ffff7ff4e10)
> > at ../../gcc/cgraphunit.c:823
> > #7 0x000000000109f9c0 in varpool_node::add (decl=0x7ffff7ff4e10) at
> > ../../gcc/varpool.c:473
> > #8 0x000000000091ba93 in emit_globals_protector () at
> > ../../gcc/cgraphunit.c:2187
> > #9 0x000000000091bab6 in output_in_order (no_reorder=false) at
> > ../../gcc/cgraphunit.c:2218
> > #10 0x000000000091c4f4 in symbol_table::compile (this=0x7ffff71280a8) at
> > ../../gcc/cgraphunit.c:2524
> > #11 0x000000000091c73f in symbol_table::finalize_compilation_unit
> > (this=0x7ffff71280a8) at ../../gcc/cgraphunit.c:2620
> > #12 0x0000000000d90fbf in compile_file () at ../../gcc/toplev.c:496
> > #13 0x0000000000d93448 in do_compile () at ../../gcc/toplev.c:1998
> > #14 0x0000000000d936d2 in toplev::main (this=0x7fffffffdbb0, argc=27,
> > argv=0x7fffffffdcb8) at ../../gcc/toplev.c:2106
> > #15 0x00000000016e11d1 in main (argc=27, argv=0x7fffffffdcb8) at
> > ../../gcc/main.c:39
>
> Can you please provide work-in-progress patch so that I can play with that?
> Is your patch also handling the comment:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c4
>
I guess it's not. I was only able to test this thing on x86_64 and armv7l.
> >
> > However, there're questions:
> > 1. I wonder is it really possible to emit zero-sized dummies and initialize
> > them as well (i.e. emit them into .data/.rodata)? For now I emit variables
> > of integer types, but that leads to the presence of couple addressable bytes
> > in the beginning of the section.
>
> I can investigate once I have a patch candidate.
>
Please see attachment above.
> > 2. What should we do with sections like .data.rel.ro, .data.rel.ro.local?
> > They suffer from this bug too, but it's not that easy to put globals there,
> > as you must set various attributes onto decl to ensure it will receive the
> > right reloc value.
>
> @Jakub: Can you advise please about the question #2?
>
These questions remain unanswered...
>From gcc-bugs-return-634113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 15:46:05 2019
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From: "mdblack98 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/89373] macro expansion not counting braces correctly
Date: Mon, 18 Feb 2019 15:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89373
--- Comment #4 from mdblack98 at yahoo dot com ---
FYI...the variadic macro __VA_ARGS__ did solve the braced items problem on
array initialization in nested macros. Just have to move the argument to the
end of the macro...
Thanks
Mike
>From gcc-bugs-return-634114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 16:14:39 2019
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From: "peter_foelsche at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89389] New: inlining failed in call to always_inline -- removing attribute leaves function inlined
Date: Mon, 18 Feb 2019 16:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89389
Bug ID: 89389
Summary: inlining failed in call to always_inline -- removing
attribute leaves function inlined
Product: gcc
Version: 5.3.0
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Priority: P3
Component: c++
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Some member function is labeled
__attribute__((always_inline)) inline
as are many others. This is generated code and has been working for many cases.
Today I had the first error of this kind.
When removing the attribute the code compiles fine AND does not generate a
function call.
The function itself is trivial (there are many functions for which
always_inline is successful, which are more complicated.
The same error happens with
g++ 5.3.0
g++ 5.5.0
g++ 7.3.0
g++ 8.2.0
compiler options are
-fPIC -I include -O3 -DNDEBUG -funroll-loops -march=native -ffast-math
-fwhole-program -ftemplate-depth=16384 -march=native -shared -std=c++11
-Wno-attributes -I $BOOST_DIR
I'm not certain if I can provide the source code (or any preprocessed file) --
I'll have to ask.
>From gcc-bugs-return-634116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 16:32:22 2019
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Mon, 18 Feb 2019 16:32:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed with r268990.
>From gcc-bugs-return-634115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 16:32:05 2019
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Subject: [Bug middle-end/89294] [9 regression] ICE in valid_constant_size_p, at tree.c:7524
Date: Mon, 18 Feb 2019 16:32:00 -0000
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Feb 18 16:31:17 2019
New Revision: 268990
URL: https://gcc.gnu.org/viewcvs?rev=268990&root=gcc&view=rev
Log:
PR middle-end/89294 - ICE in valid_constant_size_p
gcc/c-family/ChangeLog:
PR middle-end/89294
* c-common.c (invalid_array_size_error): Handle cst_size_not_constant.
gcc/ChangeLog:
PR middle-end/89294
* tree.c (valid_constant_size_p): Avoid assuming size is a constant
expression.
* tree.h (cst_size_error): Add the cst_size_not_constant enumerator.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/tree.c
trunk/gcc/tree.h
>From gcc-bugs-return-634117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 16:49:07 2019
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From: "frank.secilia at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
Date: Mon, 18 Feb 2019 16:49:00 -0000
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--- Comment #6 from Frank Secilia <frank.secilia at gmail dot com> ---
I can't find anything in the standard under `constant expressions` or
`converted constant expressions` that explicitly allows non-null
pointer-to-member-functions in constexpr contexts, but I also can't find
anything since N4268 that explicitly forbids them.
It looks like icc and msvc accept this as well. Here are some godbolt results
for x86_64:
clang 7.0 - https://godbolt.org/z/sg-da1
icc 19.0.1 - https://godbolt.org/z/X8eqy1
msvc 19.16 - https://godbolt.org/z/5gbv83
>From gcc-bugs-return-634118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 17:01:21 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89367] Constexpr expression is not constexpr in template, but is constexpr in non-template.
Date: Mon, 18 Feb 2019 17:01:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If the compiler can prove the addresses are the same or are different, then
sure, it will evaluate to constant 0 or 1. The question is if the compiler
must be able to prove it in all cases (which is impossible, in some cases it
needs to do runtime checks and then it can't be a constant expression), and if
the problematic cases include the above ones.
>From gcc-bugs-return-634119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 17:31:13 2019
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libbacktrace/89362] [8/9 regression] zlib support breaks libbacktrace on strict-alignment platforms
Date: Mon, 18 Feb 2019 17:31:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The problem is that most debug sections have alignment 1 so you cannot do:
>
> chdr = (const b_elf_chdr *) compressed;
>
> and expect to have a valid b_elf_chdr on strict-alignment platforms.
It's a binutils issue (PR binutils/23919) fixed in 2.32 and later.
>From gcc-bugs-return-634120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 17:46:08 2019
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From: "Casey at Carter dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/82380] [concepts] Error when using requires constraint with attributes
Date: Mon, 18 Feb 2019 17:45:00 -0000
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--- Comment #2 from Casey Carter <Casey at Carter dot net> ---
You can work around this bug by using a trailing requires-clause instead of
putting the requires-clause in the template-head.
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87761
--- Comment #11 from Jeffrey A. Law <law at redhat dot com> ---
Note configuring for mips-linux will show the octeon-exts failures.
>From gcc-bugs-return-634122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 18:29:38 2019
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Mon, 18 Feb 2019 18:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #25 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Mon Feb 18 18:28:58 2019
New Revision: 268992
URL: https://gcc.gnu.org/viewcvs?rev=268992&root=gcc&view=rev
Log:
2019-02-18 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
* trans-decl.c (gfc_get_extern_function_decl): Add argument
actual_args and pass it through to gfc_get_function_type.
* trans-expr.c (conv_function_val): Add argument actual_args
and pass it on to gfc_get_extern_function_decl.
(conv_procedure_call): Pass actual arguments to conv_function_val.
* trans-types.c (get_formal_from_actual_arglist): New function.
(gfc_get_function_type): Add argument actual_args. Generate
formal args from actual args if necessary.
* trans-types.h (gfc_get_function_type): Add optional argument.
* trans.h (gfc_get_extern_function_decl): Add optional argument.
2019-02-18 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
* gfortran.dg/lto/20091028-1_0.f90: Add -Wno-lto-type-mismatch to
options.
* gfortran.dg/lto/20091028-2_0.f90: Likewise.
* gfortran.dg/lto/pr87689_0.f: New file.
* gfortran.dg/lto/pr87689_1.f: New file.
Added:
trunk/gcc/testsuite/gfortran.dg/lto/pr87689_0.f
trunk/gcc/testsuite/gfortran.dg/lto/pr87689_1.f
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-decl.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-types.c
trunk/gcc/fortran/trans-types.h
trunk/gcc/fortran/trans.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90
trunk/gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90
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Subject: [Bug c++/89390] New: [9 Regression] ICE in get_string, at spellcheck-tree.h:46
Date: Mon, 18 Feb 2019 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89390
Bug ID: 89390
Summary: [9 Regression] ICE in get_string, at
spellcheck-tree.h:46
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Changed between 20181125 and 20181202 :
$ cat z1.cc
enum class a { };
void f ()
{
a::~a()
}
$ g++-9-20181125 -c z1.cc
In function 'void f()':
cc1plus: error: '~a' is not a member of 'a'
$ g++-9-20190217 -c z1.cc
z1.cc: In function 'void f()':
z1.cc:4:7: internal compiler error: in get_string, at spellcheck-tree.h:46
4 | a::~a()
| ^
0x69446a edit_distance_traits<tree_node*>::get_string(tree_node*)
../../gcc/spellcheck-tree.h:46
0x69446a best_match<tree_node*, char const*>::best_match(tree_node*, unsigned
int)
../../gcc/spellcheck.h:95
0x69446a suggest_alternative_in_scoped_enum(tree_node*, tree_node*)
../../gcc/cp/name-lookup.c:5945
0x662bac qualified_name_lookup_error(tree_node*, tree_node*, tree_node*,
unsigned int)
../../gcc/cp/error.c:4280
0x71e2ab finish_id_expression_1
../../gcc/cp/semantics.c:3609
0x71e2ab finish_id_expression(tree_node*, tree_node*, tree_node*, cp_id_kind*,
bool, bool, bool*, bool, bool, bool, bool, char const**, unsigned int)
../../gcc/cp/semantics.c:3906
0x6bae49 cp_parser_primary_expression
../../gcc/cp/parser.c:5712
0x6bfcf1 cp_parser_postfix_expression
../../gcc/cp/parser.c:7162
0x6cc015 cp_parser_unary_expression
../../gcc/cp/parser.c:8459
0x6a9fef cp_parser_cast_expression
../../gcc/cp/parser.c:9345
0x6aa7c2 cp_parser_binary_expression
../../gcc/cp/parser.c:9446
0x6ab559 cp_parser_assignment_expression
../../gcc/cp/parser.c:9742
0x6ab7e2 cp_parser_expression
../../gcc/cp/parser.c:9911
0x6ae544 cp_parser_expression_statement
../../gcc/cp/parser.c:11449
0x6b9669 cp_parser_statement
../../gcc/cp/parser.c:11245
0x6ba490 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11592
0x6ba53f cp_parser_compound_statement
../../gcc/cp/parser.c:11546
0x6d0d00 cp_parser_function_body
../../gcc/cp/parser.c:22562
0x6d0d00 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/cp/parser.c:22599
0x6d0fe0 cp_parser_function_definition_after_declarator
../../gcc/cp/parser.c:27666
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Subject: [Bug c++/89391] New: [9 Regression] ICE in build_target_expr_with_type, at cp/tree.c:795
Date: Mon, 18 Feb 2019 18:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89391
Bug ID: 89391
Summary: [9 Regression] ICE in build_target_expr_with_type, at
cp/tree.c:795
Product: gcc
Version: 9.0
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Changed between 20180513 and 20180527 :
$ cat z1.cc
struct S { };
void f ()
{
auto a = reinterpret_cast<S&&>(f());
}
$ g++-9-20180513 -c z1.cc
z1.cc: In function 'void f()':
z1.cc:4:37: error: invalid cast of an rvalue expression of type 'void' to type
'S&&'
auto a = reinterpret_cast<S&&>(f());
^
$ g++-9-20190217 -c z1.cc
z1.cc: In function 'void f()':
z1.cc:4:37: internal compiler error: in build_target_expr_with_type, at
cp/tree.c:795
4 | auto a = reinterpret_cast<S&&>(f());
| ^
0x735f8e build_target_expr_with_type(tree_node*, tree_node*, int)
../../gcc/cp/tree.c:795
0x745452 build_reinterpret_cast_1
../../gcc/cp/typeck.c:7484
0x745863 build_reinterpret_cast(tree_node*, tree_node*, int)
../../gcc/cp/typeck.c:7676
0x6c035c cp_parser_postfix_expression
../../gcc/cp/parser.c:6876
0x6cc015 cp_parser_unary_expression
../../gcc/cp/parser.c:8459
0x6a9fef cp_parser_cast_expression
../../gcc/cp/parser.c:9345
0x6aa7c2 cp_parser_binary_expression
../../gcc/cp/parser.c:9446
0x6ab559 cp_parser_assignment_expression
../../gcc/cp/parser.c:9742
0x6aaf4d cp_parser_constant_expression
../../gcc/cp/parser.c:10026
0x6ab501 cp_parser_initializer_clause
../../gcc/cp/parser.c:22702
0x6aeabf cp_parser_initializer
../../gcc/cp/parser.c:22642
0x6d18ad cp_parser_init_declarator
../../gcc/cp/parser.c:20378
0x6b70be cp_parser_simple_declaration
../../gcc/cp/parser.c:13476
0x6b8be9 cp_parser_declaration_statement
../../gcc/cp/parser.c:12906
0x6b962f cp_parser_statement
../../gcc/cp/parser.c:11230
0x6ba490 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11592
0x6ba53f cp_parser_compound_statement
../../gcc/cp/parser.c:11546
0x6d0d00 cp_parser_function_body
../../gcc/cp/parser.c:22562
0x6d0d00 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/cp/parser.c:22599
0x6d0fe0 cp_parser_function_definition_after_declarator
../../gcc/cp/parser.c:27666
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Subject: [Bug c++/89392] New: [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Mon, 18 Feb 2019 18:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89392
Bug ID: 89392
Summary: [7/8/9 Regression] ICE in bitmap_bit_p, at
bitmap.c:978
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Started with gcc-7 :
$ cat z1.cc
typedef struct {
virtual void f () {}
} s;
s t;
$ g++-6 -c z1.cc -O1 -flto -fvtable-verify=std
$
$ g++-9-20190217 -c z1.cc -O0 -flto -fvtable-verify=std
$
$ g++-9-20190217 -c z1.cc -O1 -flto -fvtable-verify=std
during GIMPLE pass: ealias
z1.cc: In function '_GLOBAL__sub_I.00099_t':
z1.cc:4:4: internal compiler error: Segmentation fault
4 | s t;
| ^
0xba166f crash_signal
../../gcc/toplev.c:326
0x7bdb4e bitmap_bit_p(bitmap_head*, int)
../../gcc/bitmap.c:978
0xd2c858 do_ds_constraint
../../gcc/tree-ssa-structalias.c:1713
0xd2c858 do_complex_constraint
../../gcc/tree-ssa-structalias.c:1811
0xd2c858 solve_graph
../../gcc/tree-ssa-structalias.c:2757
0xd34fba solve_constraints
../../gcc/tree-ssa-structalias.c:7218
0xd37263 compute_points_to_sets
../../gcc/tree-ssa-structalias.c:7275
0xd37263 compute_may_aliases()
../../gcc/tree-ssa-structalias.c:7638
0xadb711 execute_function_todo
../../gcc/passes.c:1949
0xadc7f2 execute_todo
../../gcc/passes.c:2031
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Mon, 18 Feb 2019 19:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89285
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45752
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45752&action=edit
gcc9-pr89285.patch
Updated untested patch for the constexpr evaluation on pre-folding trees.
>From gcc-bugs-return-634127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 19:46:19 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Mon, 18 Feb 2019 19:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #26 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on gcc 9 so far. I will backport this to the other
open branches, but only after the release of the next
version of gcc 8.3.
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Subject: [Bug c++/89390] [9 Regression] ICE in get_string, at spellcheck-tree.h:46
Date: Mon, 18 Feb 2019 20:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89390
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-18
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45753
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45753&action=edit
gcc9-pr89390.patch
Untested fix.
>From gcc-bugs-return-634129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:05:03 2019
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Subject: [Bug c++/89390] [9 Regression] ICE in get_string, at spellcheck-tree.h:46
Date: Mon, 18 Feb 2019 20:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r266644.
>From gcc-bugs-return-634130-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:08:18 2019
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Subject: [Bug c++/89391] [9 Regression] ICE in build_target_expr_with_type, at cp/tree.c:795
Date: Mon, 18 Feb 2019 20:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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CC| |jakub at gcc dot gnu.org
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r260622.
>From gcc-bugs-return-634131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:09:27 2019
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Mon, 18 Feb 2019 20:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
>From gcc-bugs-return-634132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:30:54 2019
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Subject: [Bug c++/89391] [9 Regression] ICE in build_target_expr_with_type, at cp/tree.c:795
Date: Mon, 18 Feb 2019 20:30:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45754
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45754&action=edit
gcc9-pr89391.patch
Untested fix.
>From gcc-bugs-return-634133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:49:40 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89384] [9 Regression] CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
Date: Mon, 18 Feb 2019 20:49:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I did a bit more of bisecting, and it seems that r267881 is the one.
With that revision, the tree dump shows
ctg (struct array01_real(kind=4) & restrict x)
{
integer(kind=8) ubound.0;
integer(kind=8) stride.1;
integer(kind=8) offset.2;
integer(kind=8) size.3;
real(kind=4)[0:D.2275] * restrict x.0;
[...]
_gfortran_gfc_desc_to_cfi_desc (&cfi.11, &parm.10);
ctg (cfi.11);
_gfortran_cfi_desc_to_gfc_desc (&parm.10, &cfi.11);
whereas at r267880 we get
ctg (struct array01_real(kind=4) & restrict x)
{
integer(kind=8) ubound.0;
integer(kind=8) stride.1;
[...]
D.2290 = _gfortran_internal_pack (&parm.10);
parm.10.data = D.2290;
ctg (&parm.10);
parm.10.data = origptr.11;
if ((real(kind=4)[0:] *) parm.10.data != (real(kind=4)[0:] *) D.2290)
{
_gfortran_internal_unpack (&parm.10, D.2290);
__builtin_free (D.2290);
}
}
so it seems the pack/unpack is missing. I'm also fairly
sure that the previous code would not have worked together with C
in the absence of ISO_Fortran_binding.h :-)
>From gcc-bugs-return-634134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 20:59:02 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89387] [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Mon, 18 Feb 2019 20:59:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45755
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45755&action=edit
gcc9-pr89387.patch
Untested fix.
>From gcc-bugs-return-634135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 21:34:18 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89393] New: [9 Regression] FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[ \t]_?_ZGR1bIvE
Date: Mon, 18 Feb 2019 21:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89393
Bug ID: 89393
Summary: [9 Regression] FAIL: g++.dg/abi/ref-temp1.C
-std=c++14 scan-assembler .weak(_definition)?[
\t]_?_ZGR1bIvE
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa2.0w-hp-hpux11.11
Target: hppa2.0w-hp-hpux11.11
Build: hppa2.0w-hp-hpux11.11
Created attachment 45756
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45756&action=edit
.s file
spawn /test/gnu/gcc/objdir/gcc/testsuite/g++/../../xg++
-B/test/gnu/gcc/objdir/g
cc/testsuite/g++/../../ /test/gnu/gcc/gcc/gcc/testsuite/g++.dg/abi/ref-temp1.C
-
fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-colo
r=never -nostdinc++
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/in
clude/hppa2.0w-hp-hpux11.11
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc
++-v3/include -I/test/gnu/gcc/gcc/libstdc++-v3/libsupc++
-I/test/gnu/gcc/gcc/lib
stdc++-v3/include/backward -I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util
-fmes
sage-length=0 -std=c++14 -pedantic-errors -Wno-long-long --save-temps
-fno-ident
-S -o ref-temp1.s
PASS: g++.dg/abi/ref-temp1.C -std=c++14 (test for excess errors)
FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[
\t]_?_ZGR1bIvE_
FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[
\t]_?_ZGR1bIvE0_
FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[
\t]_?_ZGR1bIvE1_
FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[
\t]_?_ZGR1bIvE2_
PASS: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler
_ZGR1bIvE_:\n[^\n]+_ZGR1bIvE0_
PASS: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler
_ZGR1bIvE0_:\n[^\n]+_ZGR1bIvE1_
PASS: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler _ZGR1bIvE1_:\n[^\n]+[
\t]1
PASS: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler _ZGR1bIvE2_:\n[^\n]+[
\t]4
Revision 268241 was okay.
Similar fails:
FAIL: g++.dg/abi/ref-temp1.C -std=c++17 scan-assembler .weak(_definition)?[
\\t]_?_ZGR1bIvE_
FAIL: g++.dg/abi/ref-temp1.C -std=c++17 scan-assembler .weak(_definition)?[
\\t]_?_ZGR1bIvE0_
FAIL: g++.dg/abi/ref-temp1.C -std=c++17 scan-assembler .weak(_definition)?[
\\t]_?_ZGR1bIvE1_
FAIL: g++.dg/abi/ref-temp1.C -std=c++17 scan-assembler .weak(_definition)?[
\\t]_?_ZGR1bIvE2_
>From gcc-bugs-return-634136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 21:50:02 2019
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Subject: [Bug fortran/89384] [9 Regression] CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
Date: Mon, 18 Feb 2019 21:50:00 -0000
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This simple (too simple?) patch seems to fix things:
Index: trans-expr.c
===================================================================
--- trans-expr.c (Revision 268992)
+++ trans-expr.c (Arbeitskopie)
@@ -4944,7 +4944,12 @@ gfc_conv_gfc_desc_to_cfi_desc (gfc_se *parmse, gfc
if (e->rank != 0)
{
- gfc_conv_expr_descriptor (parmse, e);
+ if (fsym->attr.contiguous
+ && !gfc_is_simply_contiguous (e, false, true))
+ gfc_conv_subref_array_arg (parmse, e, false, fsym->attr.intent,
+ fsym->attr.pointer);
+ else
+ gfc_conv_expr_descriptor (parmse, e);
if (POINTER_TYPE_P (TREE_TYPE (parmse->expr)))
parmse->expr = build_fold_indirect_ref_loc (input_location,
>From gcc-bugs-return-634137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 23:02:16 2019
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Subject: [Bug c++/89357] alignas for automatic variables with alignment greater than 16 fails
Date: Mon, 18 Feb 2019 23:02:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |c++
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
The given test is C++, not C. I can't reproduce this issue with a C test; my
expectation is that both _Alignas and __attribute__ ((aligned ())) should
accept arbitrarily high alignments for automatic storage duration, which
appears to be the case for C (if there were a bug I'd expect it to be
rejects-valid not accepts-invalid).
If you (Richard) think this is a C bug, please give a specific C testcase,
target and options used to compile it.
>From gcc-bugs-return-634138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 23:31:02 2019
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Subject: [Bug d/88127] Many gdc.dg testsuite failures due to undefined reference to qsort_r
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--- Comment #3 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Mon Feb 18 23:29:39 2019
New Revision: 268999
URL: https://gcc.gnu.org/viewcvs?rev=268999&root=gcc&view=rev
Log:
libphobos: Detect if qsort_r is available
Merges upstream druntime bbfb58e8.
libphobos/ChangeLog:
2019-02-19 Johannes Pfau <johannespfau@gmail.com>
PR d/88127
* m4/druntime/libraries.m4 (DRUNTIME_LIBRARIES_CLIB): Add new macro.
* configure.ac: Use DRUNTIME_LIBRARIES_CLIB.
* configure: Regenerate
* Makefile.in: Regenerate
* libdruntime/gcc/config.d.in: Add Have_Qsort_R.
* libdruntime/Makefile.in: Regenerate.
* src/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
Modified:
trunk/libphobos/ChangeLog
trunk/libphobos/Makefile.in
trunk/libphobos/configure
trunk/libphobos/configure.ac
trunk/libphobos/libdruntime/MERGE
trunk/libphobos/libdruntime/Makefile.in
trunk/libphobos/libdruntime/gcc/config.d.in
trunk/libphobos/libdruntime/rt/qsort.d
trunk/libphobos/m4/druntime/libraries.m4
trunk/libphobos/src/Makefile.in
trunk/libphobos/testsuite/Makefile.in
>From gcc-bugs-return-634139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 18 23:31:52 2019
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Subject: [Bug d/88127] Many gdc.dg testsuite failures due to undefined reference to qsort_r
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
This should be fixed now.
>From gcc-bugs-return-634140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 00:23:23 2019
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Subject: [Bug c++/89389] inlining failed in call to always_inline -- removing attribute leaves function inlined
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-19
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Waiting on the preprocessed source because it is hard debug without it.
>From gcc-bugs-return-634141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 00:48:56 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Tue, 19 Feb 2019 00:48:00 -0000
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--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
octeon-exts-3 can be fixed with a relatively simple pattern in mips.md or with
a bit of code in combine.c.
fix-r4000-10.c is more interesting. Hard register propagation does its thing
and exposes a bit of dead code. Removing that dead code in turn exposes
additional hard register propagation opportunities, which then exposes more
dead code. But running those passes in their entirety seems horribly
heavyweight for this issue. Particularly since the test goes out of its way to
disable lower-subreg.
We had another BZ in this cycle where post-reload splitting exposed dead code.
So we might be able to make a case for RTL DCE after splitting (or have some
gross mips.md patterns to avoid the dead code). That would help some. But to
really fix this hard register cprop would have to discover at least the trivial
cases where its actions expose dead code, remove the dead code and reprocess
the block. I'm still not sure how wise such hacks to hard register cprop would
be.
I haven't dug into fpr-moves-5.c yet.
>From gcc-bugs-return-634142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 01:02:27 2019
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Feb 19 01:01:50 2019
New Revision: 269003
URL: https://gcc.gnu.org/viewcvs?rev=269003&root=gcc&view=rev
Log:
PR c++/89336 - multiple stores in constexpr stmt.
If we evaluate the RHS in the context of the LHS, that evaluation might
change the LHS in ways that mess with being able to store the value later.
So for assignment or scalar values, evaluate the RHS first.
* constexpr.c (cxx_eval_store_expression): Preevaluate scalar or
assigned value.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89336-1.C
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89336-2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
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Subject: [Bug middle-end/89337] Bogus "exceeds maximum object size" on unreachable code
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--- Comment #12 from Martin Sebor <msebor at gcc dot gnu.org> ---
One of the approaches we have been discussing is replacing these invalid calls
with __builtin_trap or __builtin_unreachable, perhaps optionally preceded by
__builtin_warning ("specified size exceeds maximum object size") which would be
issued if the code wasn't eliminated. Command line options controlling the
choices would be provided. This would work in some cases but probably not
those where the invalid value ends up constant-propagated after the new
statement has been introduced. It's something to investigate/prototype for GCC
10.
>From gcc-bugs-return-634144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 03:58:51 2019
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Subject: [Bug fortran/89344] uncaught programmer error: polymorphic variable is INTENT(IN) but assigned to without error
Date: Tue, 19 Feb 2019 03:58:00 -0000
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--- Comment #5 from urbanjost at comcast dot net ---
That was fast. Thanks!
>From gcc-bugs-return-634145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 05:08:46 2019
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From: "spinpx at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89394] New: libiberty :stack overflow in nm
Date: Tue, 19 Feb 2019 05:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89394
Bug ID: 89394
Summary: libiberty :stack overflow in nm
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: spinpx at gmail dot com
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Created attachment 45757
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45757&action=edit
inputs trigger bugs
reference from: https://sourceware.org/bugzilla/show_bug.cgi?id=24227
- Intel Xeon Gold 5118 processors and 256 GB memory
- Linux n18-065-139 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64
GNU/Linux
- clang version 4.0.0 (tags/RELEASE_400/final)
- version: commit commit 388a192d73df7439bf375d8b8042bb53a6be9c60
- run: nm -C input_file (We attached the inputs that trigger the bug)
- asan report:
==1992137==ERROR: AddressSanitizer: stack-overflow on address 0x7ffc986fff68
(pc 0x0000008975c5 bp 0x7ffc987000a0 sp 0x7ffc986fff70 T0)
#0 0x8975c4 in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4149:7
#1 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#2 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#3 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#4 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#5 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#6 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#7 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#8 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#9 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#10 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#11 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#12 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#13 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#14 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#15 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#16 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#17 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#18 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#19 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#20 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#21 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#22 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#23 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#24 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#25 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#26 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#27 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#28 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#29 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#30 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#31 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#32 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#33 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#34 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#35 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#36 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#37 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#38 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#39 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#40 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#41 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#42 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#43 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#44 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#45 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#46 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#47 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#48 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#49 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#50 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#51 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#52 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#53 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#54 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#55 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#56 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#57 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#58 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#59 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#60 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#61 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#62 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#63 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#64 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#65 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#66 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#67 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#68 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#69 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#70 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#71 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#72 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#73 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#74 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#75 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#76 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#77 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#78 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#79 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#80 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#81 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#82 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#83 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#84 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#85 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#86 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#87 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#88 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#89 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#90 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#91 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#92 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#93 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#94 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#95 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#96 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#97 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#98 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#99 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#100 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#101 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#102 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#103 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#104 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#105 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#106 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#107 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#108 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#109 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#110 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#111 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#112 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#113 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#114 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#115 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#116 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#117 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#118 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#119 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#120 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#121 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#122 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#123 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#124 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#125 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#126 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#127 0x8975c9 in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4149:7
#128 0x8975c9 in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4149:7
#129 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#130 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#131 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#132 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#133 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#134 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#135 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#136 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#137 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#138 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#139 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#140 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#141 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#142 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#143 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#144 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#145 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#146 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#147 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#148 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#149 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#150 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#151 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#152 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#153 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#154 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#155 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#156 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#157 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#158 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#159 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#160 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#161 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#162 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#163 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#164 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#165 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#166 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#167 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#168 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#169 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#170 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#171 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#172 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#173 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#174 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#175 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#176 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#177 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#178 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#179 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#180 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#181 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#182 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#183 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#184 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#185 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#186 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#187 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#188 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#189 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#190 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#191 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#192 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#193 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#194 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#195 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#196 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#197 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#198 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#199 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#200 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#201 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#202 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#203 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#204 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#205 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#206 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#207 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#208 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#209 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#210 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#211 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#212 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#213 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#214 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#215 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#216 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#217 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#218 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#219 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#220 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#221 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#222 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#223 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#224 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#225 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#226 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#227 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#228 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#229 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#230 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#231 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#232 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#233 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#234 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#235 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#236 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#237 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#238 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#239 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#240 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#241 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#242 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#243 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#244 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#245 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#246 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#247 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#248 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
#249 0x89762f in d_count_templates_scopes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4151:7
SUMMARY: AddressSanitizer: stack-overflow
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:4149:7
in d_count_templates_scopes
==1992137==ABORTING
>From gcc-bugs-return-634146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 05:13:23 2019
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From: "spinpx at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89395] New: libiberty: heap buffer overflow in nm
Date: Tue, 19 Feb 2019 05:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89395
Bug ID: 89395
Summary: libiberty: heap buffer overflow in nm
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: spinpx at gmail dot com
Target Milestone: ---
Created attachment 45758
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45758&action=edit
inputs trigger bugs
reference: https://sourceware.org/bugzilla/show_bug.cgi?id=24229
- Intel Xeon Gold 5118 processors and 256 GB memory
- Linux n18-065-139 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64
GNU/Linux
- clang version 4.0.0 (tags/RELEASE_400/final)
- version: commit commit 388a192d73df7439bf375d8b8042bb53a6be9c60 (2019 Jan 24)
- run: nm -C input_file (We attached the inputs that trigger the bug)
- asan report:
==2003322==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60e0000000d8 at pc 0x0000008957c6 bp 0x7ffdf2e36340 sp 0x7ffdf2e36338
READ of size 1 at 0x60e0000000d8 thread T0
#0 0x8957c5 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3356:12
#1 0x896370 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3449:16
#2 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#3 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#4 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#5 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#6 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#7 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#8 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#9 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#10 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#11 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#12 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#13 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#14 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#15 0x896370 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3449:16
#16 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#17 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#18 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#19 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#20 0x896370 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3449:16
#21 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#22 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#23 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#24 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#25 0x89610c in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3416:18
#26 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#27 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#28 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#29 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#30 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#31 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#32 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#33 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#34 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#35 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#36 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#37 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#38 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#39 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#40 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#41 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#42 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#43 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#44 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#45 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#46 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#47 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#48 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#49 0x896210 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3438:15
#50 0x896370 in d_expression_1
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3449:16
#51 0x889158 in d_expression
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3531:9
#52 0x887a7d in d_array_type
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3011:13
#53 0x883aa8 in cplus_demangle_type
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:2463:13
#54 0x893cf5 in d_parmlist
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:2908:14
#55 0x88e7a5 in d_bare_function_type
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:2962:8
#56 0x8828eb in d_encoding
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:1343:16
#57 0x88200d in cplus_demangle_mangled_name
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:1234:7
#58 0x88c408 in d_demangle_callback
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:6292:7
#59 0x88b8e6 in d_demangle
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:6343:12
#60 0x88b753 in cplus_demangle_v3
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:6500:10
#61 0x87f020 in cplus_demangle
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cplus-dem.c:165:13
#62 0x517028 in bfd_demangle
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/bfd.c:2254:9
#63 0x4f4214 in print_symname
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:423:19
#64 0x4f2e4e in print_symbol_info_bsd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1565:3
#65 0x4f9c36 in print_symbol
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:903:3
#66 0x4f7844 in print_symbols
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1102:7
#67 0x4f5d3a in display_rel_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1215:5
#68 0x4f2356 in display_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1335:7
#69 0x4f1a97 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1816:12
#70 0x7f5777ae909a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#71 0x41d5e9 in _start
(/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/nm+0x41d5e9)
0x60e0000000d8 is located 0 bytes to the right of 152-byte region
[0x60e000000040,0x60e0000000d8)
allocated by thread T0 here:
#0 0x4c42dc in malloc
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:66:3
#1 0x52e4c5 in bfd_malloc
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/libbfd.c:275:9
#2 0x516f6d in bfd_demangle
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/bfd.c:2246:24
#3 0x4f4214 in print_symname
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:423:19
#4 0x4f2e4e in print_symbol_info_bsd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1565:3
#5 0x4f9c36 in print_symbol
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:903:3
#6 0x4f7844 in print_symbols
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1102:7
#7 0x4f5d3a in display_rel_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1215:5
#8 0x4f2356 in display_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1335:7
#9 0x4f1a97 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/nm.c:1816:12
#10 0x7f5777ae909a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
SUMMARY: AddressSanitizer: heap-buffer-overflow
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/cp-demangle.c:3356:12
in d_expression_1
Shadow bytes around the buggy address:
0x0c1c7fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1c7fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1c7fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1c7fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c1c7fff8000: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
=>0x0c1c7fff8010: 00 00 00 00 00 00 00 00 00 00 00[fa]fa fa fa fa
0x0c1c7fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c1c7fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c1c7fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c1c7fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c1c7fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==2003322==ABORTING
>From gcc-bugs-return-634148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 05:19:48 2019
Return-Path: <gcc-bugs-return-634148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
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Received: (qmail 130800 invoked by alias); 19 Feb 2019 05:19:47 -0000
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From: "spinpx at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89395] libiberty: heap buffer overflow in nm
Date: Tue, 19 Feb 2019 05:19:00 -0000
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--- Comment #1 from Peng Chen <spinpx at gmail dot com> ---
the code is from binutils:
https://github.com/bminor/binutils-gdb/tree/master/libiberty
git commit: 388a192d73df7439bf375d8b8042bb53a6be9c60
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Subject: [Bug other/89394] libiberty :stack overflow in nm
Date: Tue, 19 Feb 2019 05:19:00 -0000
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--- Comment #1 from Peng Chen <spinpx at gmail dot com> ---
the code is from binutils:
https://github.com/bminor/binutils-gdb/tree/master/libiberty
git commit: 388a192d73df7439bf375d8b8042bb53a6be9c60
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 45759
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45759&action=edit
patch
Like so.
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Subject: [Bug c++/88368] [7/8/9 Regression] Improper ``use of deleted function''
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>From gcc-bugs-return-634151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 08:39:33 2019
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Subject: [Bug c++/89390] [9 Regression] ICE in get_string, at spellcheck-tree.h:46
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 19 08:38:54 2019
New Revision: 269007
URL: https://gcc.gnu.org/viewcvs?rev=269007&root=gcc&view=rev
Log:
PR c++/89390
* error.c (qualified_name_lookup_error): Only call
suggest_alternative_in_scoped_enum if name is IDENTIFIER_NODE.
* g++.dg/diagnostic/pr89390.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/diagnostic/pr89390.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/error.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89391] [9 Regression] ICE in build_target_expr_with_type, at cp/tree.c:795
Date: Tue, 19 Feb 2019 08:40:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 19 08:40:07 2019
New Revision: 269008
URL: https://gcc.gnu.org/viewcvs?rev=269008&root=gcc&view=rev
Log:
PR c++/89391
* typeck.c (build_reinterpret_cast_1): Don't handle void to
&& conversion go through build_target_expr_with_type.
* g++.dg/cpp0x/reinterpret_cast2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/reinterpret_cast2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89387] [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Tue, 19 Feb 2019 08:44:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 19 08:43:23 2019
New Revision: 269009
URL: https://gcc.gnu.org/viewcvs?rev=269009&root=gcc&view=rev
Log:
PR c++/89387
* lambda.c (maybe_generic_this_capture): Don't check
DECL_NONSTATIC_MEMBER_FUNCTION_P on USING_DECLs.
* g++.dg/cpp0x/lambda/lambda-89387.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-89387.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 08:49:35 2019
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Tue, 19 Feb 2019 08:49:00 -0000
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--- Comment #5 from Alan Modra <amodra at gmail dot com> ---
Created attachment 45760
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45760&action=edit
Current set of patches
It turns out there is a lot more than just wrong register_move_cost. This
patchset does fix the PR without introducing too many regressions, but it is a
work in progress.
I have some questions about union register classes:
1) What should register_move_cost return for a union class like GEN_OR_VSX_REGS
and some other class? Worst case, best case, or doesn't it matter?
2) What should preferred_reload_class return for union classes?
Looking at other ports doesn't shed much light..
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Subject: [Bug c++/89393] [9 Regression] FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[ \t]_?_ZGR1bIvE
Date: Tue, 19 Feb 2019 08:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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Subject: [Bug middle-end/89303] [7 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 19 Feb 2019 08:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 19 08:57:24 2019
New Revision: 269010
URL: https://gcc.gnu.org/viewcvs?rev=269010&root=gcc&view=rev
Log:
PR middle-end/89303
* g++.dg/torture/pr89303.C: Move everything from std namespace to my
namespace.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/torture/pr89303.C
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Subject: [Bug middle-end/89303] [7 Regression] memory leak with shared_ptr and enable_shared_from_this
Date: Tue, 19 Feb 2019 08:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303
--- Comment #31 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 19 08:59:21 2019
New Revision: 269011
URL: https://gcc.gnu.org/viewcvs?rev=269011&root=gcc&view=rev
Log:
PR middle-end/89303
* g++.dg/torture/pr89303.C: Move everything from std namespace to my
namespace.
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr89303.C
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Subject: [Bug fortran/83118] [7/8/9 Regression] Bad intrinsic assignment of class(*) array component of derived type
Date: Tue, 19 Feb 2019 09:00:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #15 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This seems totally broken on x86-64 too, see valgrind:
eric@polaris:~> valgrind ./unlimited_polymorphic_30
==42237== Memcheck, a memory error detector
==42237== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==42237== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==42237== Command: ./unlimited_polymorphic_30
==42237==
==42237== Conditional jump or move depends on uninitialised value(s)
==42237== at 0x4013C7: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Invalid write of size 8
==42237== at 0x40142B: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237== Address 0x5768ac0 is 0 bytes inside a block of size 6 alloc'd
==42237== at 0x4C2A0B0: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==42237== by 0x401333: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Conditional jump or move depends on uninitialised value(s)
==42237== at 0x401465: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Invalid read of size 8
==42237== at 0x4013C1: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237== Address 0x5768ac3 is 3 bytes inside a block of size 6 alloc'd
==42237== at 0x4C2A0B0: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==42237== by 0x401333: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Conditional jump or move depends on uninitialised value(s)
==42237== at 0x401A6D: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Invalid read of size 8
==42237== at 0x401A67: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237== Address 0x5768ac4 is 4 bytes inside a block of size 6 alloc'd
==42237== at 0x4C2A0B0: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==42237== by 0x401333: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Invalid write of size 4
==42237== at 0x4011DC: __copy_INTEGER_4_.3853 (in
/home/eric/unlimited_polymorphic_30)
==42237== by 0x401B54: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237== Address 0x5768ac4 is 4 bytes inside a block of size 6 alloc'd
==42237== at 0x4C2A0B0: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==42237== by 0x401333: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Conditional jump or move depends on uninitialised value(s)
==42237== at 0x4022FC: foo.3898 (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x401B73: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
==42237==
==42237== Conditional jump or move depends on uninitialised value(s)
==42237== at 0x4022FC: foo.3898 (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x401F42: MAIN__ (in /home/eric/unlimited_polymorphic_30)
==42237== by 0x4023E6: main (in /home/eric/unlimited_polymorphic_30)
In particular:
x.v._data.data = (void * restrict) __builtin_malloc (6);
D.1053 = (void *[0:] * restrict) x.v._data.data;
*((void * *) D.1053 + (sizetype) (((S.8 + D.1059) + D.1054) *
(x.v._vptr->_size * MAX_EXPR <x.v._len, 1>))) = __builtin_malloc (MAX_EXPR
<(unsigned long) x.v._vptr->_size, 1>);
The second call to __builtin_malloc overwrites part of the address returned by
the first call (or yields SIGBUS on the SPARC). There might be some confusion
about pointer arithmetics in the GENERIC code.
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Subject: [Bug c++/89391] [9 Regression] ICE in build_target_expr_with_type, at cp/tree.c:795
Date: Tue, 19 Feb 2019 09:02:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89390] [9 Regression] ICE in get_string, at spellcheck-tree.h:46
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/82968] gfortran.dg/ieee/ieee_6.f90 fails at -O0
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Still present. The type really needs to be properly aligned...
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-19
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Odd.
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From: "spinpx at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/89395] libiberty: heap buffer overflow in nm
Date: Tue, 19 Feb 2019 09:09:00 -0000
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--- Comment #2 from spinpx <spinpx at gmail dot com> ---
It can be reproduced in commit c72e75a64030b0f6535a80481f37968ad55c333a (Feb 19
2019)
>From gcc-bugs-return-634164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:10:01 2019
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From: "spinpx at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/89394] libiberty :stack overflow in nm
Date: Tue, 19 Feb 2019 09:10:00 -0000
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--- Comment #2 from spinpx <spinpx at gmail dot com> ---
It can be reproduced in bintuils commit
c72e75a64030b0f6535a80481f37968ad55c333a (Feb 19 2019)
>From gcc-bugs-return-634165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:46:24 2019
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Tue, 19 Feb 2019 09:46:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the odd thing is that pta_obstack and bitmap_default_obstack seem to
allocate
from the same memory...
(gdb) p pta_obstack
$59 = {elements = 0x33fcaa8, heads = 0x33fca88, obstack = {chunk_size = 65536,
chunk = 0x33fc930, object_base = 0x33fcbd8 "", next_free = 0x33fcbd8 "",
chunk_limit = 0x340c930 "", temp = {i = 0, p = 0x0}, alignment_mask = 7,
chunkfun = {
plain = 0x23844ac <mempool_obstack_chunk_alloc(unsigned long)>, extra =
0x23844ac <mempool_obstack_chunk_alloc(unsigned long)>}, freefun = {
plain = 0x23844d7 <mempool_obstack_chunk_free(void*)>, extra =
0x23844d7 <mempool_obstack_chunk_free(void*)>}, extra_arg = 0x0,
use_extra_arg = 0, maybe_empty_object = 0, alloc_failed = 0}}
(gdb) p bitmap_default_obstack
$60 = {elements = 0x33fcb18, heads = 0x33fcb40, obstack = {chunk_size = 65536,
chunk = 0x33fc930, object_base = 0x33fca48 "", next_free = 0x33fca48 "",
chunk_limit = 0x340c930 "", temp = {i = 0, p = 0x0}, alignment_mask = 7,
chunkfun = {
plain = 0x23844ac <mempool_obstack_chunk_alloc(unsigned long)>, extra =
0x23844ac <mempool_obstack_chunk_alloc(unsigned long)>}, freefun = {
plain = 0x23844d7 <mempool_obstack_chunk_free(void*)>, extra =
0x23844d7 <mempool_obstack_chunk_free(void*)>}, extra_arg = 0x0,
use_extra_arg = 0, maybe_empty_object = 1, alloc_failed = 0}}
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Subject: [Bug other/89396] New: objdump: Out of memory in objalloc.c
Date: Tue, 19 Feb 2019 09:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89396
Bug ID: 89396
Summary: objdump: Out of memory in objalloc.c
Product: gcc
Version: unknown
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Created attachment 45761
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45761&action=edit
input file trigger bugs
Has reported on https://sourceware.org/bugzilla/show_bug.cgi?id=24232.
- Intel Xeon Gold 5118 processors and 256 GB memory
- Linux n18-065-139 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64
GNU/Linux
- clang version 4.0.0 (tags/RELEASE_400/final)
- version: commit c72e75a64030b0f6535a80481f37968ad55c333a (Feb 19 2019)
- run objdump -x input_file
- asan report
==1221228==ERROR: AddressSanitizer failed to allocate 0xc0e4e83000
(828474142720) bytes of LargeMmapAllocator (error code: 12)
==1221228==Process memory map follows:
0x000000400000-0x00000041d000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x00000041d000-0x000000996000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000996000-0x000000bc9000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000bca000-0x000000bcb000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000bcb000-0x000000c78000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000c78000-0x0000018e9000
0x00007fff7000-0x00008fff7000
0x00008fff7000-0x02008fff7000
0x02008fff7000-0x10007fff8000
0x600000000000-0x602000000000
0x602000000000-0x602000010000
0x602000010000-0x602e00000000
0x602e00000000-0x602e00010000
0x602e00010000-0x603000000000
0x603000000000-0x603000010000
0x603000010000-0x603e00000000
0x603e00000000-0x603e00010000
0x603e00010000-0x604000000000
0x604000000000-0x604000010000
0x604000010000-0x604e00000000
0x604e00000000-0x604e00010000
0x604e00010000-0x606000000000
0x606000000000-0x606000010000
0x606000010000-0x606e00000000
0x606e00000000-0x606e00010000
0x606e00010000-0x607000000000
0x607000000000-0x607000010000
0x607000010000-0x607e00000000
0x607e00000000-0x607e00010000
0x607e00010000-0x608000000000
0x608000000000-0x608000010000
0x608000010000-0x608e00000000
0x608e00000000-0x608e00010000
0x608e00010000-0x60b000000000
0x60b000000000-0x60b000010000
0x60b000010000-0x60be00000000
0x60be00000000-0x60be00010000
0x60be00010000-0x60c000000000
0x60c000000000-0x60c000010000
0x60c000010000-0x60ce00000000
0x60ce00000000-0x60ce00010000
0x60ce00010000-0x60f000000000
0x60f000000000-0x60f000010000
0x60f000010000-0x60fe00000000
0x60fe00000000-0x60fe00010000
0x60fe00010000-0x610000000000
0x610000000000-0x610000010000
0x610000010000-0x610e00000000
0x610e00000000-0x610e00010000
0x610e00010000-0x611000000000
0x611000000000-0x611000010000
0x611000010000-0x611e00000000
0x611e00000000-0x611e00010000
0x611e00010000-0x612000000000
0x612000000000-0x612000010000
0x612000010000-0x612e00000000
0x612e00000000-0x612e00010000
0x612e00010000-0x614000000000
0x614000000000-0x614000010000
0x614000010000-0x614e00000000
0x614e00000000-0x614e00010000
0x614e00010000-0x616000000000
0x616000000000-0x616000010000
0x616000010000-0x616e00000000
0x616e00000000-0x616e00010000
0x616e00010000-0x618000000000
0x618000000000-0x618000010000
0x618000010000-0x618e00000000
0x618e00000000-0x618e00010000
0x618e00010000-0x619000000000
0x619000000000-0x619000010000
0x619000010000-0x619e00000000
0x619e00000000-0x619e00010000
0x619e00010000-0x61a000000000
0x61a000000000-0x61a000010000
0x61a000010000-0x61ae00000000
0x61ae00000000-0x61ae00010000
0x61ae00010000-0x61b000000000
0x61b000000000-0x61b000010000
0x61b000010000-0x61be00000000
0x61be00000000-0x61be00010000
0x61be00010000-0x61d000000000
0x61d000000000-0x61d000010000
0x61d000010000-0x61de00000000
0x61de00000000-0x61de00010000
0x61de00010000-0x61f000000000
0x61f000000000-0x61f000010000
0x61f000010000-0x61fe00000000
0x61fe00000000-0x61fe00010000
0x61fe00010000-0x621000000000
0x621000000000-0x621000010000
0x621000010000-0x621e00000000
0x621e00000000-0x621e00010000
0x621e00010000-0x624000000000
0x624000000000-0x624000010000
0x624000010000-0x624e00000000
0x624e00000000-0x624e00010000
0x624e00010000-0x640000000000
0x640000000000-0x640000003000
0x7f1aead66000-0x7f1aeb7e0000 /usr/lib/locale/locale-archive
0x7f1aeb7e0000-0x7f1aeba00000
0x7f1aebb00000-0x7f1aebc00000
0x7f1aebc88000-0x7f1aebc9c000
0x7f1aebc9c000-0x7f1aebca3000
/usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
0x7f1aebca3000-0x7f1aee05d000
0x7f1aee05d000-0x7f1aee07f000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee07f000-0x7f1aee1c7000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee1c7000-0x7f1aee213000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee213000-0x7f1aee214000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee214000-0x7f1aee218000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee218000-0x7f1aee21a000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f1aee21a000-0x7f1aee21e000
0x7f1aee21e000-0x7f1aee221000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee221000-0x7f1aee232000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee232000-0x7f1aee235000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee235000-0x7f1aee236000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee236000-0x7f1aee237000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee237000-0x7f1aee238000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f1aee238000-0x7f1aee239000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f1aee239000-0x7f1aee23a000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f1aee23a000-0x7f1aee23b000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f1aee23b000-0x7f1aee23c000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f1aee23c000-0x7f1aee23d000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f1aee23d000-0x7f1aee24a000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f1aee24a000-0x7f1aee2e9000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f1aee2e9000-0x7f1aee3be000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f1aee3be000-0x7f1aee3bf000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f1aee3bf000-0x7f1aee3c0000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f1aee3c0000-0x7f1aee3c2000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f1aee3c2000-0x7f1aee3c6000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f1aee3c6000-0x7f1aee3c8000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f1aee3c8000-0x7f1aee3c9000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f1aee3c9000-0x7f1aee3ca000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f1aee3ca000-0x7f1aee3d0000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f1aee3d0000-0x7f1aee3df000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f1aee3df000-0x7f1aee3e5000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f1aee3e5000-0x7f1aee3e6000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f1aee3e6000-0x7f1aee3e7000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f1aee3e7000-0x7f1aee3eb000
0x7f1aee3eb000-0x7f1aee3fa000
0x7f1aee3fa000-0x7f1aee3fb000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f1aee3fb000-0x7f1aee419000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f1aee419000-0x7f1aee421000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f1aee421000-0x7f1aee422000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f1aee422000-0x7f1aee423000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f1aee423000-0x7f1aee424000
0x7ffe9be34000-0x7ffe9be55000 [stack]
0x7ffe9bec2000-0x7ffe9bec5000 [vvar]
0x7ffe9bec5000-0x7ffe9bec7000 [vdso]
==1221228==End of process memory map.
==1221228==AddressSanitizer CHECK failed:
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common.cc:120
"((0 && "unable to mmap")) != (0)" (0x0, 0x0)
#0 0x4cbcef in __asan::AsanCheckFailed(char const*, int, char const*,
unsigned long long, unsigned long long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_rtl.cc:69:3
#1 0x4df64f in __sanitizer::CheckFailed(char const*, int, char const*,
unsigned long long, unsigned long long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_termination.cc:79:5
#2 0x4d0c5e in __sanitizer::ReportMmapFailureAndDie(unsigned long, char
const*, char const*, int, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common.cc:120:3
#3 0x4d967b in __sanitizer::MmapOrDie(unsigned long, char const*, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc:132:5
#4 0x421e54 in
__sanitizer::LargeMmapAllocator<__asan::AsanMapUnmapCallback>::Allocate(__sanitizer::AllocatorStats*,
unsigned long, unsigned long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_allocator_secondary.h:41:9
#5 0x421c08 in
__sanitizer::CombinedAllocator<__sanitizer::SizeClassAllocator64<__asan::AP64>,
__sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64<__asan::AP64>
>, __sanitizer::LargeMmapAllocator<__asan::AsanMapUnmapCallback>
>::Allocate(__sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64<__asan::AP64>
>*, unsigned long, unsigned long, bool, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_allocator_combined.h:70:24
#6 0x41f0bf in __asan::Allocator::Allocate(unsigned long, unsigned long,
__sanitizer::BufferedStackTrace*, __asan::AllocType, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_allocator.cc:407:21
#7 0x4c43f0 in malloc
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:67:10
#8 0x9929a0 in _objalloc_alloc
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/objalloc.c:143:22
#9 0x60d790 in bfd_alloc
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/opncls.c:949:9
#10 0x60d85f in bfd_alloc2
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/opncls.c:978:10
#11 0x69faac in setup_group
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/elf.c:658:9
#12 0x69c092 in _bfd_elf_make_section_from_shdr
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/elf.c:1053:10
#13 0x6acbfd in bfd_section_from_shdr
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/elf.c:2066:13
#14 0x6afb52 in bfd_section_from_shdr
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/elf.c:2311:11
#15 0x688d3f in bfd_elf64_object_p
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/elfcode.h:818:7
#16 0x5ffb25 in bfd_check_format_matches
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/bfd/format.c:315:14
#17 0x4f4c5f in display_object_bfd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3881:7
#18 0x4f4b67 in display_any_bfd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3973:5
#19 0x4f424a in display_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3994:3
#20 0x4f3ab0 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:4304:6
#21 0x7f1aee08109a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#22 0x41d639 in _start
(/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump+0x41d639)
>From gcc-bugs-return-634167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:50:09 2019
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Subject: [Bug target/89397] New: [7/8/9 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Tue, 19 Feb 2019 09:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89397
Bug ID: 89397
Summary: [7/8/9 Regression] ICE in build_call_expr_loc_array at
gcc/tree.c:11563 since r229082
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Following is causing ICE:
$ cat atomic.c
_Atomic double a;
int b;
void c() { a += b; }
$ gcc -mfpmath=sse,387 -msoft-float -mno-sse -c atomic.c
atomic.c: In function ‘c’:
atomic.c:4:1: internal compiler error: Segmentation fault
4 | void c() { a += b; }
| ^~~~
0xd1194f crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff7b79e0f ???
/usr/src/debug/glibc-2.29-1.3.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xfa6488 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/home/marxin/Programming/gcc/gcc/tree.h:3289
0xfa6488 build_call_expr_loc_array(unsigned int, tree_node*, int, tree_node**)
/home/marxin/Programming/gcc/gcc/tree.c:11563
0xfa66c1 build_call_expr(tree_node*, int, ...)
/home/marxin/Programming/gcc/gcc/tree.c:11613
0x102556c ix86_atomic_assign_expand_fenv
/home/marxin/Programming/gcc/gcc/config/i386/i386.c:50733
0x7d5a23 build_atomic_assign
/home/marxin/Programming/gcc/gcc/c/c-typeck.c:4228
0x7e37f1 build_modify_expr(unsigned int, tree_node*, tree_node*, tree_code,
unsigned int, tree_node*, tree_node*)
/home/marxin/Programming/gcc/gcc/c/c-typeck.c:6204
0x7fd78e c_parser_expr_no_commas
/home/marxin/Programming/gcc/gcc/c/c-parser.c:6721
0x7fd902 c_parser_expression
/home/marxin/Programming/gcc/gcc/c/c-parser.c:9727
0x7fe006 c_parser_expression_conv
/home/marxin/Programming/gcc/gcc/c/c-parser.c:9760
0x80d66f c_parser_statement_after_labels
/home/marxin/Programming/gcc/gcc/c/c-parser.c:5610
0x80f4ee c_parser_compound_statement_nostart
/home/marxin/Programming/gcc/gcc/c/c-parser.c:5148
0x80fc76 c_parser_compound_statement
/home/marxin/Programming/gcc/gcc/c/c-parser.c:4982
0x81138a c_parser_declaration_or_fndef
/home/marxin/Programming/gcc/gcc/c/c-parser.c:2354
0x8183bf c_parser_external_declaration
/home/marxin/Programming/gcc/gcc/c/c-parser.c:1653
0x818c09 c_parser_translation_unit
/home/marxin/Programming/gcc/gcc/c/c-parser.c:1534
0x818c09 c_parse_file()
/home/marxin/Programming/gcc/gcc/c/c-parser.c:19842
0x86c5b0 c_common_parse_file()
/home/marxin/Programming/gcc/gcc/c-family/c-opts.c:1155
Before the revision it was rejected with:
atomic2.c: In function ‘func’:
atomic2.c:49:8: error: x87 register return with x87 disabled
ald1 = d1;
^
atomic2.c:51:8: error: SSE register return with SSE disabled
acd1 += ab1;
^
>From gcc-bugs-return-634168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:50:48 2019
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Subject: [Bug target/89397] [7/8/9 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Tue, 19 Feb 2019 09:50:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Last reconfirmed| |2019-2-19
CC| |hjl at gnu dot org,
| |jakub at gcc dot gnu.org
Known to work| |6.4.0
Version|unknown |9.0
Target Milestone|--- |9.0
Known to fail| |7.4.0, 8.2.0, 9.0
>From gcc-bugs-return-634169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:53:12 2019
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From: "jungmin.song at nuance dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89329] "-O2" optimization causes a infinite loop
Date: Tue, 19 Feb 2019 09:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89329
--- Comment #2 from Jungmin Song <jungmin.song at nuance dot com> ---
My understanding is that the compiler with O2 assumes that 'i' should be under
ARR_MAX becuase there was undifend behavior, if it was not.
Would you please point me to where is is in C standard? Becuase I'm not much
faiilar with that part, it would be very appreciated.
>From gcc-bugs-return-634170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:53:34 2019
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Tue, 19 Feb 2019 09:53:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |cmtice at google dot com
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So some major memory corruption going on from VTV, valgrind errors start with
==13824== Invalid read of size 8
==13824== at 0xCB9D8A: bitmap_alloc(bitmap_obstack*) (bitmap.c:763)
==13824== by 0x16020A9: remove_unused_locals() (tree-ssa-live.c:743)
==13824== by 0x12B1BA4: execute_function_todo(function*, void*)
(passes.c:1955)
==13824== by 0x12B0CCF: do_per_function(void (*)(function*, void*), void*)
(passes.c:1638)
==13824== by 0x12B1E81: execute_todo(unsigned int) (passes.c:2031)
==13824== by 0x12B2D02: execute_one_pass(opt_pass*) (passes.c:2520)
==13824== by 0x12B2EE3: execute_pass_list_1(opt_pass*) (passes.c:2569)
==13824== by 0x12B2F6A: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==13824== by 0x12A0F12: gcc::pass_manager::execute_early_local_passes()
(passes.c:119)
==13824== by 0xD7D672: symbol_table::process_new_functions()
(cgraphunit.c:338)
==13824== by 0xBD6FEC: vtv_generate_init_routine()
(vtable-class-hierarchy.c:1194)
==13824== by 0x99FFB8: cxx_post_compilation_parsing_cleanups()
(decl2.c:5115)
==13824== Address 0x6453598 is 120 bytes inside a block of size 65,536 alloc'd
==13824== at 0x4C2A080: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==13824== by 0x23F5420: xmalloc (xmalloc.c:147)
==13824== by 0xC41BB0: memory_block_pool::allocate() (memory-block.h:56)
==13824== by 0x23844C6: mempool_obstack_chunk_alloc(unsigned long)
(memory-bl
it looks to me vtv_generate_init_routine() may not simply dispatch to
process_new_functions () being deeply inside FE context. VTV is even worse
than TM though.
The following fixes the ICE:
Index: gcc/cp/vtable-class-hierarchy.c
===================================================================
--- gcc/cp/vtable-class-hierarchy.c (revision 269009)
+++ gcc/cp/vtable-class-hierarchy.c (working copy)
@@ -1191,8 +1191,6 @@ vtv_generate_init_routine (void)
gimplify_function_tree (vtv_fndecl);
cgraph_node::add_new_function (vtv_fndecl, false);
- symtab->process_new_functions ();
-
if (flag_vtable_verify == VTV_PREINIT_PRIORITY && !TARGET_PECOFF)
assemble_vtv_preinit_initializer (vtv_fndecl);
there seems to be exactly _zero_ testsuite coverage for VTV...
>From gcc-bugs-return-634171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 09:54:25 2019
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Subject: [Bug tree-optimization/89376] ICE: Segmentation fault (in oacc_entry_exit_ok_1)
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
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| |vries at gcc dot gnu.org
Ever confirmed|0 |1
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Subject: [Bug fortran/89363] RANK incorrect for unallocated allocatable
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With 8.2.0 and trunk (9.0) I get
FAIL procr 1 F
and from at least 4.8 up to 7.4, I get
FAIL procr 0 F
Note that if I add
print *, rank(x)
before
call procr(x,flag)
I get 2.
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Subject: [Bug other/89398] New: objdump: Out of memory in xmalloc.c (libiberty)
Date: Tue, 19 Feb 2019 10:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89398
Bug ID: 89398
Summary: objdump: Out of memory in xmalloc.c (libiberty)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: spinpx at gmail dot com
Target Milestone: ---
Created attachment 45762
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45762&action=edit
inputs trigger the bugs
Has reported on https://sourceware.org/bugzilla/show_bug.cgi?id=24234
- Intel Xeon Gold 5118 processors and 256 GB memory
- Linux n18-065-139 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64
GNU/Linux
- clang version 4.0.0 (tags/RELEASE_400/final)
- version: commit c72e75a64030b0f6535a80481f37968ad55c333a (Feb 19 2019)
- run objdump -x input_file
- asan report
==1247614==ERROR: AddressSanitizer failed to allocate 0x5500002000
(365072228352) bytes of LargeMmapAllocator (error code: 12)
==1247614==Process memory map follows:
0x000000400000-0x00000041d000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x00000041d000-0x000000996000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000996000-0x000000bc9000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000bca000-0x000000bcb000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000bcb000-0x000000c78000
/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump
0x000000c78000-0x0000018e9000
0x00007fff7000-0x00008fff7000
0x00008fff7000-0x02008fff7000
0x02008fff7000-0x10007fff8000
0x600000000000-0x602000000000
0x602000000000-0x602000010000
0x602000010000-0x602e00000000
0x602e00000000-0x602e00010000
0x602e00010000-0x603000000000
0x603000000000-0x603000010000
0x603000010000-0x603e00000000
0x603e00000000-0x603e00010000
0x603e00010000-0x604000000000
0x604000000000-0x604000010000
0x604000010000-0x604e00000000
0x604e00000000-0x604e00010000
0x604e00010000-0x606000000000
0x606000000000-0x606000010000
0x606000010000-0x606e00000000
0x606e00000000-0x606e00010000
0x606e00010000-0x607000000000
0x607000000000-0x607000010000
0x607000010000-0x607e00000000
0x607e00000000-0x607e00010000
0x607e00010000-0x608000000000
0x608000000000-0x608000010000
0x608000010000-0x608e00000000
0x608e00000000-0x608e00010000
0x608e00010000-0x60b000000000
0x60b000000000-0x60b000010000
0x60b000010000-0x60be00000000
0x60be00000000-0x60be00010000
0x60be00010000-0x60c000000000
0x60c000000000-0x60c000010000
0x60c000010000-0x60ce00000000
0x60ce00000000-0x60ce00010000
0x60ce00010000-0x60f000000000
0x60f000000000-0x60f000010000
0x60f000010000-0x60fe00000000
0x60fe00000000-0x60fe00010000
0x60fe00010000-0x610000000000
0x610000000000-0x610000010000
0x610000010000-0x610e00000000
0x610e00000000-0x610e00010000
0x610e00010000-0x611000000000
0x611000000000-0x611000010000
0x611000010000-0x611e00000000
0x611e00000000-0x611e00010000
0x611e00010000-0x612000000000
0x612000000000-0x612000010000
0x612000010000-0x612e00000000
0x612e00000000-0x612e00010000
0x612e00010000-0x614000000000
0x614000000000-0x614000010000
0x614000010000-0x614e00000000
0x614e00000000-0x614e00010000
0x614e00010000-0x616000000000
0x616000000000-0x616000010000
0x616000010000-0x616e00000000
0x616e00000000-0x616e00010000
0x616e00010000-0x618000000000
0x618000000000-0x618000010000
0x618000010000-0x618e00000000
0x618e00000000-0x618e00010000
0x618e00010000-0x619000000000
0x619000000000-0x619000010000
0x619000010000-0x619e00000000
0x619e00000000-0x619e00010000
0x619e00010000-0x61a000000000
0x61a000000000-0x61a000010000
0x61a000010000-0x61ae00000000
0x61ae00000000-0x61ae00010000
0x61ae00010000-0x61b000000000
0x61b000000000-0x61b000010000
0x61b000010000-0x61be00000000
0x61be00000000-0x61be00010000
0x61be00010000-0x61d000000000
0x61d000000000-0x61d000010000
0x61d000010000-0x61de00000000
0x61de00000000-0x61de00010000
0x61de00010000-0x61f000000000
0x61f000000000-0x61f000010000
0x61f000010000-0x61fe00000000
0x61fe00000000-0x61fe00010000
0x61fe00010000-0x621000000000
0x621000000000-0x621000010000
0x621000010000-0x621e00000000
0x621e00000000-0x621e00010000
0x621e00010000-0x624000000000
0x624000000000-0x624000010000
0x624000010000-0x624e00000000
0x624e00000000-0x624e00010000
0x624e00010000-0x62d000000000
0x62d000000000-0x62d000010000
0x62d000010000-0x62de00000000
0x62de00000000-0x62de00010000
0x62de00010000-0x640000000000
0x640000000000-0x640000003000
0x7f9b2ad66000-0x7f9b2b7e0000 /usr/lib/locale/locale-archive
0x7f9b2b7e0000-0x7f9b2ba00000
0x7f9b2bb00000-0x7f9b2bc00000
0x7f9b2bc8a000-0x7f9b2bc9e000
0x7f9b2bc9e000-0x7f9b2bca5000
/usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
0x7f9b2bca5000-0x7f9b2e05f000
0x7f9b2e05f000-0x7f9b2e081000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e081000-0x7f9b2e1c9000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e1c9000-0x7f9b2e215000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e215000-0x7f9b2e216000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e216000-0x7f9b2e21a000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e21a000-0x7f9b2e21c000 /lib/x86_64-linux-gnu/libc-2.28.so
0x7f9b2e21c000-0x7f9b2e220000
0x7f9b2e220000-0x7f9b2e223000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e223000-0x7f9b2e234000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e234000-0x7f9b2e237000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e237000-0x7f9b2e238000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e238000-0x7f9b2e239000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e239000-0x7f9b2e23a000 /lib/x86_64-linux-gnu/libgcc_s.so.1
0x7f9b2e23a000-0x7f9b2e23b000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f9b2e23b000-0x7f9b2e23c000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f9b2e23c000-0x7f9b2e23d000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f9b2e23d000-0x7f9b2e23e000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f9b2e23e000-0x7f9b2e23f000 /lib/x86_64-linux-gnu/libdl-2.28.so
0x7f9b2e23f000-0x7f9b2e24c000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f9b2e24c000-0x7f9b2e2eb000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f9b2e2eb000-0x7f9b2e3c0000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f9b2e3c0000-0x7f9b2e3c1000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f9b2e3c1000-0x7f9b2e3c2000 /lib/x86_64-linux-gnu/libm-2.28.so
0x7f9b2e3c2000-0x7f9b2e3c4000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f9b2e3c4000-0x7f9b2e3c8000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f9b2e3c8000-0x7f9b2e3ca000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f9b2e3ca000-0x7f9b2e3cb000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f9b2e3cb000-0x7f9b2e3cc000 /lib/x86_64-linux-gnu/librt-2.28.so
0x7f9b2e3cc000-0x7f9b2e3d2000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f9b2e3d2000-0x7f9b2e3e1000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f9b2e3e1000-0x7f9b2e3e7000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f9b2e3e7000-0x7f9b2e3e8000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f9b2e3e8000-0x7f9b2e3e9000
/lib/x86_64-linux-gnu/libpthread-2.28.so
0x7f9b2e3e9000-0x7f9b2e3ed000
0x7f9b2e3ed000-0x7f9b2e3fc000
0x7f9b2e3fc000-0x7f9b2e3fd000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f9b2e3fd000-0x7f9b2e41b000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f9b2e41b000-0x7f9b2e423000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f9b2e423000-0x7f9b2e424000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f9b2e424000-0x7f9b2e425000 /lib/x86_64-linux-gnu/ld-2.28.so
0x7f9b2e425000-0x7f9b2e426000
0x7ffe3f311000-0x7ffe3f332000 [stack]
0x7ffe3f3c2000-0x7ffe3f3c5000 [vvar]
0x7ffe3f3c5000-0x7ffe3f3c7000 [vdso]
==1247614==End of process memory map.
==1247614==AddressSanitizer CHECK failed:
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common.cc:120
"((0 && "unable to mmap")) != (0)" (0x0, 0x0)
#0 0x4cbcef in __asan::AsanCheckFailed(char const*, int, char const*,
unsigned long long, unsigned long long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_rtl.cc:69:3
#1 0x4df64f in __sanitizer::CheckFailed(char const*, int, char const*,
unsigned long long, unsigned long long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_termination.cc:79:5
#2 0x4d0c5e in __sanitizer::ReportMmapFailureAndDie(unsigned long, char
const*, char const*, int, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_common.cc:120:3
#3 0x4d967b in __sanitizer::MmapOrDie(unsigned long, char const*, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc:132:5
#4 0x421e54 in
__sanitizer::LargeMmapAllocator<__asan::AsanMapUnmapCallback>::Allocate(__sanitizer::AllocatorStats*,
unsigned long, unsigned long)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_allocator_secondary.h:41:9
#5 0x421c08 in
__sanitizer::CombinedAllocator<__sanitizer::SizeClassAllocator64<__asan::AP64>,
__sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64<__asan::AP64>
>, __sanitizer::LargeMmapAllocator<__asan::AsanMapUnmapCallback>
>::Allocate(__sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64<__asan::AP64>
>*, unsigned long, unsigned long, bool, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_allocator_combined.h:70:24
#6 0x41f0bf in __asan::Allocator::Allocate(unsigned long, unsigned long,
__sanitizer::BufferedStackTrace*, __asan::AllocType, bool)
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_allocator.cc:407:21
#7 0x4c43f0 in malloc
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:67:10
#8 0x995467 in xmalloc
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/libiberty/xmalloc.c:147:12
#9 0x4f6d06 in slurp_symtab
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:697:23
#10 0x4f528f in dump_bfd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3793:12
#11 0x4f4c71 in display_object_bfd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3883:7
#12 0x4f4b67 in display_any_bfd
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3973:5
#13 0x4f424a in display_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:3994:3
#14 0x4f3ab0 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/objdump.c:4304:6
#15 0x7f9b2e08309a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
#16 0x41d639 in _start
(/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/objdump+0x41d639)
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Subject: [Bug fortran/89388] Component selection for assumed-size DT array
Date: Tue, 19 Feb 2019 10:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89388
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
The segfault occurs when accessing 'z' in 'ssssum' and disappears if I replace
'y(*)' with 'y(:)' in 'f'.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/83118] [7/8/9 Regression] Bad intrinsic assignment of class(*) array component of derived type
Date: Tue, 19 Feb 2019 10:40:00 -0000
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--- Comment #16 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the reduced test
type :: any_vector
class(*), allocatable :: v(:)
end type
type(any_vector) :: x, y
x%v = ['foo','bar']
end
with -fsanitize=address gives
==54286==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x602000000150 at pc 0x000102fb38df bp 0x7ffeecc4d180 sp 0x7ffeecc4d178
READ of size 8 at 0x602000000150 thread T0
#0 0x102fb38de in MAIN__ (a.out:x86_64+0x1000018de)
#1 0x102fb3b9a in main (a.out:x86_64+0x100001b9a)
#2 0x7fff7512bed8 in start (libdyld.dylib:x86_64+0x16ed8)
0x602000000156 is located 0 bytes to the right of 6-byte region
[0x602000000150,0x602000000156)
allocated by thread T0 here:
#0 0x1032e784f in wrap_malloc sanitizer_malloc_mac.inc:114
#1 0x102fb37b3 in MAIN__ (a.out:x86_64+0x1000017b3)
#2 0x102fb3b9a in main (a.out:x86_64+0x100001b9a)
#3 0x7fff7512bed8 in start (libdyld.dylib:x86_64+0x16ed8)
SUMMARY: AddressSanitizer: heap-buffer-overflow (a.out:x86_64+0x1000018de) in
MAIN__
Shadow bytes around the buggy address:
0x1c03ffffffd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03ffffffe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c03fffffff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x1c0400000000: fa fa fd fd fa fa fd fd fa fa 00 00 fa fa 00 07
0x1c0400000010: fa fa 03 fa fa fa 00 00 fa fa 00 06 fa fa 06 fa
=>0x1c0400000020: fa fa 07 fa fa fa 07 fa fa fa[06]fa fa fa fa fa
0x1c0400000030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x1c0400000070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
>From gcc-bugs-return-634176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 11:01:18 2019
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89398] objdump: Out of memory in xmalloc.c (libiberty)
Date: Tue, 19 Feb 2019 11:01:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
Not a gcc problem
>From gcc-bugs-return-634177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 11:01:34 2019
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Subject: [Bug other/89396] objdump: Out of memory in objalloc.c (libiberty)
Date: Tue, 19 Feb 2019 11:01:00 -0000
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--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
Not a gcc problem
>From gcc-bugs-return-634178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 11:22:29 2019
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From: "paul.hua.gm at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89378] [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c -mmsa (internal compiler error)
Date: Tue, 19 Feb 2019 11:22:00 -0000
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--- Comment #2 from Paul Hua <paul.hua.gm at gmail dot com> ---
(In reply to Richard Biener from comment #1)
> MSA is new, so not sure if it is a regression. Please fill out
> known-to-work.
r267643 not iced, but fails to optimize the code.
f1:
.frame $sp,16,$31 # vars= 0, regs= 1/0, args= 0, gp= 0
.mask 0x10000000,-8
.fmask 0x00000000,0
daddiu $sp,$sp,-16
sd $28,8($sp)
lui $28,%hi(%neg(%gp_rel(f1)))
daddu $28,$28,$25
daddiu $28,$28,%lo(%neg(%gp_rel(f1)))
dla $2,a
ld.w $w0,0($2)
dla $2,.LC0
ld.w $w1,0($2)
fmul.w $w0,$w0,$w1
move.v $w2,$w0
sldi.b $w2,$w0[4]
mov.s $f3,$f2
move.v $w1,$w0
move.v $w2,$w0
sldi.b $w2,$w0[8]
add.s $f0,$f0,$f3
sldi.b $w1,$w1[12]
add.s $f0,$f0,$f2
add.s $f0,$f0,$f1
ld $28,8($sp)
.set noreorder
.set nomacro
j $31
daddiu $sp,$sp,16
.set macro
.set reorder
r267646 iced.
>From gcc-bugs-return-634179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 11:38:37 2019
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Subject: [Bug c++/89387] [9 Regression] ICE in maybe_generic_this_capture at gcc/cp/lambda.c:945 since r268851
Date: Tue, 19 Feb 2019 11:38:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-634180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 11:42:58 2019
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89357] alignas for automatic variables with alignment greater than 16 fails
Date: Tue, 19 Feb 2019 11:42:00 -0000
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--- Comment #2 from Matthias Kretz <kretz at kde dot org> ---
I agree. The corresponding C test case produces equivalent f0 and f1:
void g(int*);
void f0() {
__attribute__((aligned(128))) int x;
g(&x);
}
void f1() {
_Alignas(128) int x;
g(&x);
}
And I agree this PR is rejects-valid. Unless there's some very strange rule for
ARM and thus _Alignas is supposed to also reject values greater 16?
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Subject: [Bug target/89399] New: ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
Date: Tue, 19 Feb 2019 12:15:00 -0000
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Bug ID: 89399
Summary: ICE: RTL check: expected code 'set', 'clobber' or
'clobber_high', have 'parallel' in
combine_reaching_defs, at ree.c:783
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-softfp-linux-gnueabi-gcc
Created attachment 45763
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45763&action=edit
reduced testcase
Compiler output:
$ armv7a-softfp-linux-gnueabi-gcc -O -mcpu=cortex-m23 -free testcase.c
during RTL pass: ree
testcase.c: In function 'foo':
testcase.c:9:1: internal compiler error: RTL check: expected code 'set',
'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at
ree.c:783
9 | }
| ^
0x57a347 rtl_check_failed_code3(rtx_def const*, rtx_code, rtx_code, rtx_code,
char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl.c:904
0x16848a6 combine_reaching_defs
/repo/gcc-trunk/gcc/ree.c:852
0x16853b5 find_and_remove_re
/repo/gcc-trunk/gcc/ree.c:1314
0x16853b5 rest_of_handle_ree
/repo/gcc-trunk/gcc/ree.c:1385
0x16853b5 execute
/repo/gcc-trunk/gcc/ree.c:1413
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ armv7a-softfp-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-softfp/bin/armv7a-softfp-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-softfp/bin/../libexec/gcc/armv7a-softfp-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-softfp-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=softfp --with-arch=armv7-a
--with-sysroot=/usr/armv7a-softfp-linux-gnueabi --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=armv7a-softfp-linux-gnueabi
--with-ld=/usr/bin/armv7a-softfp-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-softfp-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-softfp
Thread model: posix
gcc version 9.0.1 20190219 (experimental) (GCC)
>From gcc-bugs-return-634182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 12:28:25 2019
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Subject: [Bug target/89400] New: ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
Date: Tue, 19 Feb 2019 12:28:00 -0000
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Bug ID: 89400
Summary: ICE: output_operand: invalid %-code with
-march=armv6kz -mthumb -munaligned-access
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Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-softfp-linux-gnueabi
Created attachment 45764
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45764&action=edit
reduced testcase
Compiler output:
$ armv7a-softfp-linux-gnueabi-gcc -march=armv6kz -mthumb -munaligned-access
testcase.c
during RTL pass: final
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: output_operand: invalid %-code
7 | }
| ^
0x89f50f output_operand_lossage(char const*, ...)
/repo/gcc-trunk/gcc/final.c:3610
0x8a0676 output_asm_insn(char const*, rtx_def**)
/repo/gcc-trunk/gcc/final.c:3979
0x8a16b2 output_asm_insn(char const*, rtx_def**)
/repo/gcc-trunk/gcc/final.c:3841
0x8a16b2 final_scan_insn_1
/repo/gcc-trunk/gcc/final.c:3107
0x8a4beb final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
/repo/gcc-trunk/gcc/final.c:3153
0x8a4d15 final_1
/repo/gcc-trunk/gcc/final.c:2021
0x8a6234 rest_of_handle_final
/repo/gcc-trunk/gcc/final.c:4659
0x8a6234 execute
/repo/gcc-trunk/gcc/final.c:4737
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ armv7a-softfp-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-softfp/bin/armv7a-softfp-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-softfp/bin/../libexec/gcc/armv7a-softfp-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-softfp-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=softfp --with-arch=armv7-a
--with-sysroot=/usr/armv7a-softfp-linux-gnueabi --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=armv7a-softfp-linux-gnueabi
--with-ld=/usr/bin/armv7a-softfp-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-softfp-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-softfp
Thread model: posix
gcc version 9.0.1 20190219 (experimental) (GCC)
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Subject: [Bug ipa/89330] IPA inliner touches released cgraph_edges
Date: Tue, 19 Feb 2019 12:41:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45733|0 |1
is obsolete| |
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45765
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45765&action=edit
Updated patch that recycles summary IDs (tested on x86_64-linux-gnu)
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89400] [7/8/9 Regression] ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
Date: Tue, 19 Feb 2019 12:42:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
CC| |ktkachov at gcc dot gnu.org
Summary|ICE: output_operand: |[7/8/9 Regression] ICE:
|invalid %-code with |output_operand: invalid
|-march=armv6kz -mthumb |%-code with -march=armv6kz
|-munaligned-access |-mthumb -munaligned-access
Ever confirmed|0 |1
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Subject: [Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
Date: Tue, 19 Feb 2019 12:44:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
CC| |ktkachov at gcc dot gnu.org
Summary|ICE: RTL check: expected |[7/8/9 Regression] ICE: RTL
|code 'set', 'clobber' or |check: expected code 'set',
|'clobber_high', have |'clobber' or
|'parallel' in |'clobber_high', have
|combine_reaching_defs, at |'parallel' in
|ree.c:783 |combine_reaching_defs, at
| |ree.c:783
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.
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Subject: [Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression
Date: Tue, 19 Feb 2019 12:47:00 -0000
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--- Comment #30 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 19 12:46:48 2019
New Revision: 269015
URL: https://gcc.gnu.org/viewcvs?rev=269015&root=gcc&view=rev
Log:
2019-02-19 Richard Biener <rguenther@suse.de>
PR middle-end/88074
* toplev.c (do_compile): Initialize mpfr's exponent range
based on available float modes.
* gcc.dg/pr88074.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/pr88074.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/toplev.c
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88074] [7/8 Regression] g++ hangs on math expression
Date: Tue, 19 Feb 2019 12:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] g++ |[7/8 Regression] g++ hangs
|hangs on math expression |on math expression
--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug middle-end/89037] checking ice emitting 128-bit bit-field initializer
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
Version|9.0 |6.5.0
Target Milestone|--- |9.0
Known to fail| |6.0, 7.0, 8.0
--- Comment #5 from Wilco <wilco at gcc dot gnu.org> ---
Note this fails on GCC6, GCC7 and GCC8 too.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/60144] Misleading error message when missing "then" after "if" and "else if"
Date: Tue, 19 Feb 2019 13:10:00 -0000
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I don't understand the goal of the block (line 1651 of gcc/fortran/match.c)
/* The gfc_match_assignment() above may have returned a MATCH_NO
where the assignment was to a named constant. Check that
special case here. */
m = gfc_match_assignment ();
if (m == MATCH_NO)
{
gfc_error ("Cannot assign to a named constant at %C");
gfc_free_expr (expr);
gfc_undo_symbols ();
gfc_current_locus = old_loc;
return MATCH_ERROR;
}
The closest test matching my understanding of the comment is
integer, parameter :: i = 1
if (i == 2) i = 3 ! { dg-error "in variable definition context" }
end
which gives the following error
if_param.f90:2:12:
2 | if (i == 2) i = 3 ! { dg-error "in variable definition context" }
| 1
Error: Named constant 'i' in variable definition context (assignment) at (1)
If I remove the block, I get the following errors for the test in comment 0:
pr60144.f90:2:15:
2 | if (.TRUE.)
| 1
Error: Unclassifiable statement in IF-clause at (1)
pr60144.f90:3:11:
3 | else if (.FALSE.)
| 1
Error: Unexpected junk after ELSE statement at (1)
which looks better for the IF statement.
For the ELSE IF error, how can I move the caret after '(.FALSE.)' and replace
'junk' with something neutral (token, statement, ...)?
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Subject: [Bug target/89397] [7/8/9 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01581.html
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Subject: [Bug driver/69471] "-march=native" unintentionally breaks further -march/-mtune flags
Date: Tue, 19 Feb 2019 13:52:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01071.html
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Subject: [Bug target/89353] Unnecessary ENDBR with -mmanual-endbr
Date: Tue, 19 Feb 2019 13:53:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01084.html
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Subject: [Bug target/89355] Unnecessary ENDBR
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01327.html
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Tue, 19 Feb 2019 13:58:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Related to/duplicate of pr67894.
Note that the reporter of pr67894 has the opposite expectation for the bounds.
I tend to agree with him:
16.9.109 LBOUND (ARRAY [, DIM, KIND])
..
Case (i): If DIM is present, ARRAY is a whole array, and either ARRAY
is an assumed-size array of rank DIM or dimension DIM of ARRAY has
nonzero extent, the result has a value equal to the lower bound
for subscript DIM of ARRAY. Otherwise, if DIM is present, the result value is
1.
Case (ii): LBOUND (ARRAY) has a value whose ith element is equal to
LBOUND (ARRAY, i), for i = 1, 2, ... , n, where n is the rank of ARRAY.
LBOUND (ARRAY, KIND=KIND) has a value whose ith element is equal
to LBOUND (ARRAY, i, KIND), for i = 1, 2, ..., n, where n is the rank of ARRAY.
'this' is a whole array and has a nonzero extent.
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Subject: [Bug c/87924] OpenACC wait clauses without async-arguments
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--- Comment #2 from Chung-Lin Tang <cltang at gcc dot gnu.org> ---
Author: cltang
Date: Tue Feb 19 14:10:15 2019
New Revision: 269016
URL: https://gcc.gnu.org/viewcvs?rev=269016&root=gcc&view=rev
Log:
2019-02-19 Chung-Lin Tang <cltang@codesourcery.com>
PR c/87924
gcc/c/
* c-parser.c (c_parser_oacc_clause_wait): Add representation of wait
clause without argument as 'wait (GOMP_ASYNC_NOVAL)', adjust comments.
gcc/cp/
* parser.c (cp_parser_oacc_clause_wait): Add representation of wait
clause without argument as 'wait (GOMP_ASYNC_NOVAL)', adjust comments.
gcc/fortran/
* openmp.c (gfc_match_omp_clauses): Add representation of wait clause
without argument as 'wait (GOMP_ASYNC_NOVAL)'.
libgomp/
* oacc-parallel.c (GOACC_parallel_keyed): Remove condition on call to
goacc_wait().
(goacc_wait): Handle ACC_ASYNC_NOVAL case, remove goacc_thread() call
and related adjustment.
Reviewed-by: Thomas Schwinge <thomas@codesourcery.com>
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/libgomp/ChangeLog
trunk/libgomp/oacc-parallel.c
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Subject: [Bug target/89397] [7/8/9 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Tue, 19 Feb 2019 14:20:00 -0000
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--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Feb 19 14:19:33 2019
New Revision: 269017
URL: https://gcc.gnu.org/viewcvs?rev=269017&root=gcc&view=rev
Log:
i386: Set ix86_fpmath to FPMATH_387 without SSE
ix86_fpmath should be set to combination of FPMATH_387 and FPMATH_SSE.
When SSE is disabled, it should be set to FPMATH_387 and 387 codegen is
also controlled by -msoft-float.
gcc/
PR target/89397
* config/i386/i386.c (ix86_option_override_internal): Set
opts->x_ix86_fpmath to FPMATH_387 when SSE is disabled.
gcc/testsuite/
PR target/89397
* gcc.target/i386/pr89397.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89397.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89393] [9 Regression] FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[ \t]_?_ZGR1bIvE
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Would adding
// { dg-require-weak "" }
to the testcase help?
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Subject: [Bug c++/89393] [9 Regression] FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[ \t]_?_ZGR1bIvE
Date: Tue, 19 Feb 2019 14:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89393
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
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From: "rdmsr at protonmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89401] New: The generated object file does not automatically relocate the address using the cl link
Date: Tue, 19 Feb 2019 14:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89401
Bug ID: 89401
Summary: The generated object file does not automatically
relocate the address using the cl link
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rdmsr at protonmail dot com
Target Milestone: ---
__asm__ (
"push rbp;\n\t"
"jmp Label;\n\t"
"mov rbp,offset cs:Label;\n\t"
"mov rbp,offset Label;\n\t"
"mov rbp,Label;\n\t"
"mov rbp,Label;\n\t"
"mov rbp,cs:Label;\n\t"
"lea rbp,Label;\n\t"
"Label:\n\t"
"push rbp;\n\t"
);
I want to use GCC inline assembly to get the Label address.
Use the following command to get the object file:
gcc64 -c -s -masm=intel 1.cpp
Now I get the file 1.o
I used a disassembler to view assembly instructions：
.text:0000000000000000 push rbp
.text:0000000000000001 jmp short loc_32
.text:0000000000000003 ;
---------------------------------------------------------------------------
.text:0000000000000003 mov rbp, 32h
.text:000000000000000A mov rbp, 32h
.text:0000000000000011 mov rbp, qword ptr ds:loc_32
.text:0000000000000019 mov rbp, qword ptr ds:loc_32
.text:0000000000000021 db 2Eh
.text:0000000000000021 mov rbp, qword ptr loc_32
.text:000000000000002A lea rbp, ds:32h
.text:0000000000000032
.text:0000000000000032 loc_32: ; CODE XREF:
test+1↑j
.text:0000000000000032 ; DATA XREF:
test+11↑r ...
.text:0000000000000032 push rbp
.text:0000000000000033 mov eax, 0
.text:0000000000000038 retn
I need to link this file with vc++：
Then use the disassembler to see the pe file with the link succeeded：
.text:0000000140011820 sub_140011820 proc near ; CODE XREF:
sub_140011307↑j
.text:0000000140011820 push rbp
.text:0000000140011821 jmp short loc_140011852
.text:0000000140011823 ;
---------------------------------------------------------------------------
.text:0000000140011823 mov rbp, 32h
.text:000000014001182A mov rbp, 32h
.text:0000000140011831 mov rbp, ds:32h
.text:0000000140011839 mov rbp, ds:32h
.text:0000000140011841 db 2Eh
.text:0000000140011841 mov rbp, cs:32h
.text:000000014001184A lea rbp, ds:32h
.text:0000000140011852
.text:0000000140011852 loc_140011852: ; CODE XREF:
sub_140011820+1↑j
.text:0000000140011852 push rbp
.text:0000000140011853 mov eax, 0
.text:0000000140011858 retn
As you see now, he doesn't seem to relocate the address.
When I used nasm to generate object files it did it。
I don't know if it's a bug or a feature missing, just report it now.
>From gcc-bugs-return-634200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 14:32:49 2019
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Subject: [Bug c++/89401] The generated object file does not automatically relocate the address using the cl link
Date: Tue, 19 Feb 2019 14:32:00 -0000
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--- Comment #1 from syscall <rdmsr at protonmail dot com> ---
gcc -v:
Using built-in specs.
COLLECT_GCC=gcc64
COLLECT_LTO_WRAPPER=D:/Program\ Files\
(x86)/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/8.1.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-8.1.0/configure --host=x86_64-w64-mingw32
--build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --prefix=/mingw64
--with-sysroot=/c/mingw810/x86_64-810-posix-seh-rt_v6-rev0/mingw64
--enable-shared --enable-static --disable-multilib
--enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes
--enable-threads=posix --enable-libgomp --enable-libatomic --enable-lto
--enable-graphite --enable-checking=release --enable-fully-dynamic-string
--enable-version-specific-runtime-libs --disable-libstdcxx-pch
--disable-libstdcxx-debug --enable-bootstrap --disable-rpath
--disable-win32-registry --disable-nls --disable-werror --disable-symvers
--with-gnu-as --with-gnu-ld --with-arch=nocona --with-tune=core2
--with-libiconv --with-system-zlib
--with-gmp=/c/mingw810/prerequisites/x86_64-w64-mingw32-static
--with-mpfr=/c/mingw810/prerequisites/x86_64-w64-mingw32-static
--with-mpc=/c/mingw810/prerequisites/x86_64-w64-mingw32-static
--with-isl=/c/mingw810/prerequisites/x86_64-w64-mingw32-static
--with-pkgversion='x86_64-posix-seh-rev0, Built by MinGW-W64 project'
--with-bugurl=https://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe
-fno-ident -I/c/mingw810/x86_64-810-posix-seh-rt_v6-rev0/mingw64/opt/include
-I/c/mingw810/prerequisites/x86_64-zlib-static/include
-I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2
-pipe -fno-ident
-I/c/mingw810/x86_64-810-posix-seh-rt_v6-rev0/mingw64/opt/include
-I/c/mingw810/prerequisites/x86_64-zlib-static/include
-I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' CPPFLAGS='
-I/c/mingw810/x86_64-810-posix-seh-rt_v6-rev0/mingw64/opt/include
-I/c/mingw810/prerequisites/x86_64-zlib-static/include
-I/c/mingw810/prerequisites/x86_64-w64-mingw32-static/include' LDFLAGS='-pipe
-fno-ident -L/c/mingw810/x86_64-810-posix-seh-rt_v6-rev0/mingw64/opt/lib
-L/c/mingw810/prerequisites/x86_64-zlib-static/lib
-L/c/mingw810/prerequisites/x86_64-w64-mingw32-static/lib '
Thread model: posix
gcc version 8.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)
>From gcc-bugs-return-634201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 14:53:02 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgomp/82864] Stop using GOMP_OFFLOAD_openacc_async_set_async
Date: Tue, 19 Feb 2019 14:53:00 -0000
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-19
Assignee|unassigned at gcc dot gnu.org |cltang at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #0)
> [...]
> It is a bit odd though that we're asking the target plugin to keep this
> state. [...]
(In reply to Tom de Vries from comment #1)
> Hmm, I found this on openacc-gcc-7-branch:
> ...
> commit cd69c58db3f41ac72c20bc9b780772ab7e0c113e
> Author: Chung-Lin Tang <cltang@codesourcery.com>
> Date: Tue Jul 25 15:02:26 2017 +0000
>
> OpenACC async re-work
>
> ...
>
> libgomp/
> ....
> (GOMP_OFFLOAD_openacc_async_set_async): Remove.
Indeed, Chung-Lin, please reference this PR82864 in your "async re-work"
changes.
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Subject: =?UTF-8?B?W0J1ZyBsaWJzdGRjKysvODk0MDJdIE5ldzogd2FybmluZzog4oCYdm9pZCBf?= =?UTF-8?B?Wk5LU3Q0aGFzaEllRWNsRWUoKeKAmSBzcGVjaWZpZXMgbGVzcyByZXN0cmlj?= =?UTF-8?B?dGl2ZSBhdHRyaWJ1dGUgdGhhbiBpdHMgdGFyZ2V0?Date: Tue, 19 Feb 2019 14:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89402
Bug ID: 89402
Summary: warning: ‘void _ZNKSt4hashIeEclEe()’ specifies less
restrictive attribute than its target
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
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When building the compiler, I got:
/space/homedirs/uros/gcc-svn/trunk/libstdc++-v3/src/c++98/compatibility-ldbl.cc:77:17:
warning: ‘void _ZNKSt4hashIeEclEe()’ specifies less restrictive attribute than
its target ‘std::size_t std::tr1::hash<_Tp>::operator()(_Tp) const [with _Tp =
long double]’: ‘pure’ [-Wmissing-attributes]
In libstdc++-v3/src/c++98/compatibility-ldbl.cc, we have:
// std::tr1::hash<long double>::operator()
// and std::hash<long double>::operator()
// are the same, no need to duplicate them.
extern "C" void _ZNKSt4hashIeEclEe (void)
__attribute__((alias ("_ZNKSt3tr14hashIeEclEe")));
so, probably just the case of a missing attribute on alias.
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |alphaev68-linux-gnu
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|warning: ‘void |[9 Regression] warning:
|_ZNKSt4hashIeEclEe()’ |‘void _ZNKSt4hashIeEclEe()’
|specifies less restrictive |specifies less restrictive
|attribute than its target |attribute than its target
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Subject: [Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89399
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |law at gcc dot gnu.org
Target Milestone|--- |7.5
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems there is a great inconsistency in ree.c, some spots use single_set,
others use *get_sub_rtx, and others use PATTERN directly.
Here we have cand->insn
(insn 7 6 20 2 (parallel [
(set (reg:SI 0 r0 [orig:111 _2 ] [111])
(sign_extend:SI (reg:HI 0 r0 [116])))
(clobber (scratch:SI))
]) "pr89399.c":7:5 828 {thumb1_extendhisi2}
(nil))
and use
782 bool copy_needed
783 = (REGNO (SET_DEST (PATTERN (cand->insn)))
784 != REGNO (get_extended_src_reg (SET_SRC (PATTERN
(cand->insn)))));
find_removable_extensions which adds the candidates seems to be the most
permissive one though (uses single_set). So, shall we use e.g. get_sub_rtx in
all cases?
>From gcc-bugs-return-634205-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 15:15:25 2019
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Subject: =?UTF-8?B?W0J1ZyBsaWJzdGRjKysvODk0MDJdIFs5IFJlZ3Jlc3Npb25dIHdhcm5pbmc6?= =?UTF-8?B?IOKAmHZvaWQgX1pOS1N0NGhhc2hJZUVjbEVlKCnigJkgc3BlY2lmaWVzIGxl?= =?UTF-8?B?c3MgcmVzdHJpY3RpdmUgYXR0cmlidXRlIHRoYW4gaXRzIHRhcmdldA==?Date: Tue, 19 Feb 2019 15:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89402
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45766
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45766&action=edit
gcc9-pr89402.patch
Untested fix.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89402
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
BUILDSTDERR: ../../../../libstdc++-v3/src/c++98/compatibility-ldbl.cc:77:17:
warning: 'void _ZNKSt4hashIeEclEe()' specifies less restrictive attribute than
its target 'std::size_t std::tr1::hash<_Tp>::operator()(_Tp) const [with _Tp =
long double]': 'pure' [-Wmissing-attributes]
BUILDSTDERR: 77 | extern "C" void _ZNKSt4hashIeEclEe (void)
BUILDSTDERR: | ^~~~~~~~~~~~~~~~~~
BUILDSTDERR: In file included from
../../../../libstdc++-v3/src/c++98/compatibility-ldbl.cc:72:
BUILDSTDERR:
../../../../libstdc++-v3/src/c++98/hash-long-double-tr1-aux.cc:35:7: note:
'void _ZNKSt4hashIeEclEe()' target declared here
BUILDSTDERR: 35 | hash<long double>::operator()(long double __val)
const
BUILDSTDERR: | ^~~~~~~~~~~~~~~~~
is what I can see in our ppc64le build log too.
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Subject: [Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
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Jeffrey A. Law <law at redhat dot com> changed:
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--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Digging directly into the PATTERN is wrong. I'm probably to blame for those.
If I'm reading things correctly, only single_sets ought to be getting onto the
candidate list, so the uses of single_set should be OK. It's really the direct
access to PATTERNs that should be problematical.
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Subject: [Bug target/89338] sse-cvtss2si-[12].c fails on PPC Big Endian
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Subject: [Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
At least from the comments, get_sub_rtx is like single_set, except that it
doesn't allow insns with two sets where one of them is dead. If we initially
checked with single_set and then use get_sub_rtx, it might fail.
I think this issue has been introduced in r206418.
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Subject: [Bug target/89339] sse-movmskb-1.c fails for PPC Big Endian
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Subject: [Bug go/89169] FAIL: internal/cpu
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Tue Feb 19 15:42:09 2019
New Revision: 269019
URL: https://gcc.gnu.org/viewcvs?rev=269019&root=gcc&view=rev
Log:
PR go/89169
internal/cpu: do not require POWER8
Although the gc toolchain requires POWER8, the gccgo toolchain does not.
Fixes https://gcc.gnu.org/PR89169
Reviewed-on: https://go-review.googlesource.com/c/162979
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/internal/cpu/cpu_ppc64x.go
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Subject: [Bug tree-optimization/53991] _mm_popcnt_u64 fails with -O3 -fgnu-tm
Date: Tue, 19 Feb 2019 15:51:00 -0000
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pc at gcc dot gnu.org changed:
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--- Comment #13 from pc at gcc dot gnu.org ---
sorry, changed the state of this bug instead of another. resetting to "NEW".
>From gcc-bugs-return-634214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 16:04:54 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/87924] OpenACC wait clauses without async-arguments
Date: Tue, 19 Feb 2019 16:04:00 -0000
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--- Comment #3 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Tue Feb 19 16:04:17 2019
New Revision: 269020
URL: https://gcc.gnu.org/viewcvs?rev=269020&root=gcc&view=rev
Log:
[PR87924] OpenACC wait clauses without async-arguments: remove XFAILs
... which the recent r269016 didn't do.
gcc/testsuite/
PR c/87924
* c-c++-common/goacc/asyncwait-5.c: Remove XFAILs.
* gfortran.dg/goacc/asyncwait-5.f: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/goacc/asyncwait-5.c
trunk/gcc/testsuite/gfortran.dg/goacc/asyncwait-5.f
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Tue, 19 Feb 2019 16:19:00 -0000
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 45767
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reg_move_cost patch
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Tue, 19 Feb 2019 16:20:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 45768
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NON_SPECIAL_REGS removal
>From gcc-bugs-return-634217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 16:22:39 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Tue, 19 Feb 2019 16:22:00 -0000
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I currently have the two previous patches in my stack, and I see no
regressions (on powerpc64-linux -m32/-m64).
>From gcc-bugs-return-634218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 16:26:18 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Erm. No new ICEs, I mean. Various tests expect different generated code
then you get with that. Some of it is an improvement.
>From gcc-bugs-return-634219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 16:27:51 2019
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #23 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Steve Ellcey from comment #22)
> It looks like the recent checkins are causing gfortran.dg/ieee/ieee_6.f90
> to fail on aarch64. Reading through the comments it looks like this isn't a
> new problem but the failure showing up in the GCC testsuite run is new.
Well it's a regression since it used to work in GCC7/8/9. Note it's incorrect
to allow folding of these calls, for example support_fpu_flag can return true
or false depending on the flag (FE_DENORMAL if not supported on most targets),
and yet the constant folding always returns true for all flags.
>From gcc-bugs-return-634220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 16:32:34 2019
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Subject: [Bug target/89339] sse-movmskb-1.c fails for PPC Big Endian
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pc at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #1 from pc at gcc dot gnu.org ---
Fix posted for review: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01589.html
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Subject: [Bug target/89338] sse-cvtss2si-[12].c fails on PPC Big Endian
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pc at gcc dot gnu.org changed:
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--- Comment #1 from pc at gcc dot gnu.org ---
Fix posted for review: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01589.html
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Tue, 19 Feb 2019 16:49:00 -0000
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ctice at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |ctice at gcc dot gnu.org
--- Comment #4 from ctice at gcc dot gnu.org ---
Just FYI I'm in the process of reviewing this and making sure it make sense for
VTV.
In the meantime, I am puzzled by your statement that there is no testsuite
coverage for VTV: VTV does indeed have a small testsuite. It is in the libvtv
directory, because it makes no sense (and the tests all fail) if you try to run
it when VTV is not enabled. But if you shift to the libvtv build tree and try
make check you should see the VTV tests run.
>From gcc-bugs-return-634223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:01:09 2019
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Subject: [Bug c++/89393] [9 Regression] FAIL: g++.dg/abi/ref-temp1.C -std=c++14 scan-assembler .weak(_definition)?[ \t]_?_ZGR1bIvE
Date: Tue, 19 Feb 2019 17:01:00 -0000
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--- Comment #2 from dave.anglin at bell dot net ---
On 2019-02-19 9:28 a.m., jakub at gcc dot gnu.org wrote:
> --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Would adding
> // { dg-require-weak "" }
> to the testcase help?
I will test.
>From gcc-bugs-return-634225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:20:53 2019
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Subject: [Bug c/80529] Split "C++ style comments are not allowed in ISO C90" pedwarn into its own warning flag
Date: Tue, 19 Feb 2019 17:20:00 -0000
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
My previous arguments for having a flag for this have been in the positive
form, i.e., so that it can be enabled separately, but I'd also like to state it
in its negative form, i.e., so that one can do -std=c89 -pedantic
-Wno-c++-style-comment to get the rest of the C89 pedwarns without also getting
the warnings for C++ style comments.
>From gcc-bugs-return-634224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:20:26 2019
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Subject: [Bug c++/89403] New: [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
Date: Tue, 19 Feb 2019 17:20:00 -0000
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Bug ID: 89403
Summary: [7/8/9 Regression] ICE in maybe_clone_body, at
cp/optimize.c:693
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With options "-fsyntax-only -Os" and several test cases like
$ cat constexpr-empty11.C
template <typename Xn>
struct element : Xn {
constexpr element() : Xn() { }
};
template <typename Xn>
struct closure {
element<Xn> member;
constexpr closure() { }
};
struct empty { struct {} s; };
constexpr closure<empty> tup{};
constexpr empty first = tup.member;
$ g++-5 -c constexpr-empty11.C -std=c++14 -fsyntax-only -Os
$
$ g++-9-20190217 -c constexpr-empty11.C -fsyntax-only -O0
$ g++-9-20190217 -c constexpr-empty11.C -fsyntax-only -O2
$
$ g++-9-20190217 -c constexpr-empty11.C -fsyntax-only -Os
constexpr-empty11.C: In constructor 'constexpr element<Xn>::element() [with Xn
= empty]':
constexpr-empty11.C:14:35: internal compiler error: Segmentation fault
14 | constexpr empty first = tup.member;
| ^
0xe32b7f crash_signal
../../gcc/toplev.c:326
0x763f75 maybe_clone_body(tree_node*)
../../gcc/cp/optimize.c:693
0x83e119 expand_or_defer_fn_1(tree_node*)
../../gcc/cp/semantics.c:4341
0x83e3d8 expand_or_defer_fn(tree_node*)
../../gcc/cp/semantics.c:4363
0x6f495d c_parse_final_cleanups()
../../gcc/cp/decl2.c:4967
>From gcc-bugs-return-634226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:23:52 2019
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Subject: [Bug fortran/34721] Output statements fool the -Wuninitialized option
Date: Tue, 19 Feb 2019 17:23:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org,
| |manu at gcc dot gnu.org
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #2)
> Related to PR 31094, PR 31279, and PR 23169.
2 of those have since been fixed; does that help this at all?
>From gcc-bugs-return-634227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:25:45 2019
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Subject: [Bug c++/89404] New: [7/8/9 Regression] ICE in build_value_init_noctor, at cp/init.c:467
Date: Tue, 19 Feb 2019 17:25:00 -0000
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Bug ID: 89404
Summary: [7/8/9 Regression] ICE in build_value_init_noctor, at
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This invalid code ICEs with gcc-7 onwards :
$ cat z1.cc
void
foo (int n)
{
struct {} a[1][n] (+a[0]);
}
$ g++-6 -c z1.cc
z1.cc: In function 'void foo(int)':
z1.cc:4:27: error: array must be initialized with a brace-enclosed initializer
struct {} a[1][n] (+a[0]);
^
$ g++-9-20190217 -c z1.cc
z1.cc: In function 'void foo(int)':
z1.cc:4:26: internal compiler error: in build_value_init_noctor, at
cp/init.c:467
4 | struct {} a[1][n] (+a[0]);
| ^
0x6706e7 build_value_init_noctor(tree_node*, int)
../../gcc/cp/init.c:467
0x670738 build_value_init(tree_node*, int)
../../gcc/cp/init.c:380
0x620831 cxx_eval_array_reference
../../gcc/cp/constexpr.c:2602
0x620831 cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4657
0x622104 cxx_eval_outermost_constant_expr
../../gcc/cp/constexpr.c:5115
0x6243d0 maybe_constant_value(tree_node*, tree_node*, bool)
../../gcc/cp/constexpr.c:5347
0x62f054 cp_fully_fold(tree_node*)
../../gcc/cp/cp-gimplify.c:2165
0x716e17 finish_unary_op_expr(unsigned int, tree_code, cp_expr, int)
../../gcc/cp/semantics.c:2745
0x6cc22c cp_parser_unary_expression
../../gcc/cp/parser.c:8440
0x6a9fef cp_parser_cast_expression
../../gcc/cp/parser.c:9345
0x6aa7c2 cp_parser_binary_expression
../../gcc/cp/parser.c:9446
0x6ab559 cp_parser_assignment_expression
../../gcc/cp/parser.c:9742
0x6aaf4d cp_parser_constant_expression
../../gcc/cp/parser.c:10026
0x6adf46 cp_parser_parenthesized_expression_list
../../gcc/cp/parser.c:7885
0x6aeb0c cp_parser_initializer
../../gcc/cp/parser.c:22647
0x6d18ad cp_parser_init_declarator
../../gcc/cp/parser.c:20378
0x6b70be cp_parser_simple_declaration
../../gcc/cp/parser.c:13476
0x6b8be9 cp_parser_declaration_statement
../../gcc/cp/parser.c:12906
0x6b962f cp_parser_statement
../../gcc/cp/parser.c:11230
0x6ba490 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11592
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
Maybe Iain will know what's up.
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Subject: [Bug c++/89405] New: [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
Date: Tue, 19 Feb 2019 17:31:00 -0000
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Bug ID: 89405
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Reporter: gscfq@t-online.de
Target Milestone: ---
The combination "-std=c++17 -fno-weak" affects several testsuite cases.
Changed between 20180527 and 20180610.
$ cat z1.cc
#include <new>
int* f (void* a)
{
return new(a) int();
}
$ g++-9-20190217 -c z1.cc -std=c++14
$ g++-9-20190217 -c z1.cc -std=c++14 -fno-weak
$ g++-9-20190217 -c z1.cc -std=c++17
$
$ g++-7 -c z1.cc -std=c++17 -fno-weak
$ g++-9-20180527 -c z1.cc -std=c++17 -fno-weak
$ g++-9-20190217 -c z1.cc -std=c++17 -fno-weak
z1.cc:5:1: internal compiler error: in import_export_decl, at cp/decl2.c:2959
5 | }
| ^
0x65c5cb import_export_decl(tree_node*)
../../gcc/cp/decl2.c:2959
0x65fc67 c_parse_final_cleanups()
../../gcc/cp/decl2.c:4987
>From gcc-bugs-return-634230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:36:34 2019
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Subject: [Bug c/66918] Disable "inline function declared but never defined" warning
Date: Tue, 19 Feb 2019 17:36:00 -0000
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pskocik at gmail dot com changed:
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CC| |pskocik at gmail dot com
--- Comment #7 from pskocik at gmail dot com ---
I'd also very much welcome a way to silence this (like with
-Wno-undefined-inline on clang).
My reason for wanting it is I'd like to prototype a non-static inline function
in one header (a fast-to-include header), define it in another (a
slower-to-parse header that might not always be needed), and have both headers
includable in the same translation unit.
Dummy example:
/*first.h*/
inline void f(void);
/*second.h*/
//#include "first.h"
inline void f(void){}
Unfortunately, if only the first header is included, gcc's generating this
unsilencable warning unless I drop the `inline` from the prototype, but if I do
and if I then also include the second header with the definition, then the
prototype without the inline will turn into an unwanted instantiation and
linker errors down the road.
>From gcc-bugs-return-634231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:37:22 2019
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Subject: [Bug c/66918] Disable "inline function declared but never defined" warning
Date: Tue, 19 Feb 2019 17:37:00 -0000
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--- Comment #8 from pskocik at gmail dot com ---
I'd also very much welcome a way to silence this (like with
-Wno-undefined-inline on clang).
My reason for wanting it is I'd like to prototype a non-static inline function
in one header (a fast-to-include header), define it in another (a
slower-to-parse header that might not always be needed), and have both headers
includable in the same translation unit.
Dummy example:
/*first.h*/
inline void f(void);
/*second.h*/
//#include "first.h"
inline void f(void){}
Unfortunately, if only the first header is included, gcc's generating this
unsilencable warning unless I drop the `inline` from the prototype, but if I do
and if I then also include the second header with the definition, then the
prototype without the inline will turn into an unwanted instantiation and
linker errors down the road.
>From gcc-bugs-return-634233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:39:50 2019
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Subject: [Bug c++/89404] [7/8/9 Regression] ICE in build_value_init_noctor, at cp/init.c:467
Date: Tue, 19 Feb 2019 17:39:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r239267.
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Subject: [Bug target/50928] m32c ICE building RTEMS
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #19 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #18)
> Can the bug be marked as resolved?
WAITING on a reply
>From gcc-bugs-return-634234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:40:01 2019
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Subject: [Bug c++/89404] [7/8/9 Regression] ICE in build_value_init_noctor, at cp/init.c:467
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>From gcc-bugs-return-634235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:40:29 2019
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Subject: [Bug c++/48562] [C++0x] warn about uses of initializer_list that will lead to dangling pointers
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #13 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #12)
> Can the bug be marked as resolved?
WAITING on a reply
>From gcc-bugs-return-634236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:41:41 2019
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Subject: [Bug libgcc/61152] Missing GCC Runtime Library Exception in some files that are included in libgcc
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--- Comment #12 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #11)
> Can the bug be marked as resolved?
I don't think so:
(In reply to Georg-Johann Lay from comment #10)
> (In reply to Eric Gallager from comment #9)
> > There have been a bunch of commits for this bug; is it fixed yet?
>
> Dunno, back then I focused only on two targets, namely ARM and V850.
> Neither did I perform a global review, nor do I know whether in the meantime
> (4 years now) more headers and files slipped in.
>From gcc-bugs-return-634238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:43:57 2019
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Subject: [Bug target/63633] [avr] internal compiler error: unrecognizable insn with mult insns
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #7)
> Can the bug be marked as resolved?
It already was, but then it was reopened because a duplicate was found:
(In reply to Georg-Johann Lay from comment #5)
> Reopened on behalf of PR65657.
>From gcc-bugs-return-634237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:43:32 2019
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Subject: [Bug c++/80635] std::optional and bogus -Wmaybe-uninitialized warning
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--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
I think the following smaller test case independent of libstdc++ captures the
same issue as the bigger test case in comment #4. Again, declaring f()
noexcept avoids the warning (but it's not a solution in general). Zero
initializing A::i first and then setting it to the result of f() also avoids
the warning and seems like more viable solution/workaround until GCC gets
smarter about exceptions.
$ cat pr80635.C && gcc -O2 -S -Wall pr80635.C
void* operator new (__SIZE_TYPE__, void *p) { return p; }
int f ();
int x;
struct A {
int i;
A (): i (f ()) { }
~A () { x = i; }
};
struct B {
B ();
~B ();
};
template <class T>
struct C {
C (): t (), b () { }
~C () { if (b) t.~T (); }
void f () {
new (&t) T ();
b = true;
}
union {
T t;
char x[sizeof (T)];
};
bool b;
};
void g ()
{
C<A> c1;
C<B> c2;
c1.f ();
c2.f ();
}
pr80635.C: In function ‘void g()’:
pr80635.C:9:13: warning: ‘c1.A::i’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
9 | ~A () { x = i; }
| ~~^~~
pr80635.C:37:8: note: ‘c1.A::i’ was declared here
37 | C<A> c1;
| ^~
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Subject: [Bug c++/89403] [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug target/65657] [avr] read from __memx address space tramples argument to following function
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=87376
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Georg-Johann Lay from comment #6)
>
> *** This bug has been marked as a duplicate of bug 63633 ***
(In reply to Georg-Johann Lay from comment #7)
>
> *** This bug has been marked as a duplicate of bug 87376 ***
(In reply to Georg-Johann Lay from comment #8)
> Also duplicate of PR86635, aleady assigned to Senthil.
>
> *** This bug has been marked as a duplicate of bug 86635 ***
Since changing which bug this is a duplicate of overwrites the previous value,
be sure to put the previous duplicates under "See Also" or something.
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Subject: [Bug target/63633] [avr] internal compiler error: unrecognizable insn with mult insns
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86635,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=87376
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> (In reply to Martin Liška from comment #7)
> > Can the bug be marked as resolved?
>
> It already was, but then it was reopened because a duplicate was found:
>
> (In reply to Georg-Johann Lay from comment #5)
> > Reopened on behalf of PR65657.
OK I think I understand now: The bug that was marked as a duplicate of this was
marked as a duplicate of a different bug instead, bug 86635. It was also marked
as a dup of bug 87376 at one point so marking that as related too.
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Subject: [Bug c++/89403] [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r224161.
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Subject: [Bug c++/67064] Register asm variable broken
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #32 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #31)
> Can the bug be marked as resolved?
WAITING on a reply.
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Subject: [Bug fortran/89384] [9 Regression] CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Feb 19 17:55:33 2019
New Revision: 269024
URL: https://gcc.gnu.org/viewcvs?rev=269024&root=gcc&view=rev
Log:
2019-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89384
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): If the dummy
argument is contiguous and the actual argument may not be,
use gfc_conv_subref_array_arg.
2019-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89384
* gfortran.dg/ISO_Fortran_binding_4.f90
Added:
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_4.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89384] [9 Regression] CONTIGUOUS dummy argument in BIND(C) interface incorrect when actual is non-contiguous
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed, closing.
Thanks for the bug report!
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Subject: [Bug c++/89405] [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89405
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-634247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 17:58:02 2019
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From: "joel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/50928] m32c ICE building RTEMS
Date: Tue, 19 Feb 2019 17:58:00 -0000
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--- Comment #20 from Joel Sherrill <joel at gcc dot gnu.org> ---
I filed this in 2011 and we dropped RTEMS support for the m32c last year for
our next release. If you all think it is fixed, please feel free to close it.
>From gcc-bugs-return-634248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:03:10 2019
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Subject: [Bug c++/89405] [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
Date: Tue, 19 Feb 2019 18:03:00 -0000
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r241137 or something around that one.
>From gcc-bugs-return-634249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:06:53 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
Date: Tue, 19 Feb 2019 18:06:00 -0000
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--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #3)
> Maybe Iain will know what's up.
Yes, that symbol is a problem (esp. with LTO) .. but I believe that I've
committed the changes to remove it to the 7 branch. Please try 7.x current (I
don't have access to my Darwin test boxen right now).
>From gcc-bugs-return-634250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:11:19 2019
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Subject: [Bug go/89169] FAIL: internal/cpu
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Fixed.
>From gcc-bugs-return-634251-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:13:31 2019
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Subject: [Bug c++/80635] std::optional and bogus -Wmaybe-uninitialized warning
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--- Comment #16 from Pedro Alves <palves at redhat dot com> ---
(In reply to Martin Sebor from comment #15)
> Zero
> initializing A::i first and then setting it to the result of f() also avoids
> the warning and seems like more viable solution/workaround until GCC gets
> smarter about exceptions.
Recall that this C in this case is an std::optional. Basically any random type
wrapped in a std::optional can trigger issues like these. A workaround for C
in A may be quite tricky -- A may not be default constructible, and the problem
may appear in some of A's subobjects recursively. Or A may a class that isn't
under the user's control. A workaround in C would be much better. Memsetting
the buffer in C's ctor works, but the downside is that that likely has a run
time cost, which seems undesirable for std::optional.
>From gcc-bugs-return-634252-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:13:43 2019
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Subject: [Bug go/89406] New: Go testing leaves many temporary directories in /tmp around
Date: Tue, 19 Feb 2019 18:13:00 -0000
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Bug ID: 89406
Summary: Go testing leaves many temporary directories in /tmp
around
Product: gcc
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After every bootstrap I see many directories like
/tmp/{200483472,cmd-go-test-213036399,go-build359954754,gotest050976977}
(with random numbers, in most cases multiple of them for each style) in /tmp.
Could libgo testing clean that up after itself?
>From gcc-bugs-return-634253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:17:11 2019
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Subject: [Bug go/89407] New: [9 Regression] go bootstrap failure on s390x starting with r268941
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Bug ID: 89407
Summary: [9 Regression] go bootstrap failure on s390x starting
with r268941
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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As mentioned on gcc-patches
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01309.html
gcc fails to bootstrap on s390x-linux if configured with multilibs, as the
inline asm is 64-bit specific (lghi) and not really used (only referenced from
*_s390x.go, not from *_s390.go).
>From gcc-bugs-return-634254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 18:17:29 2019
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Subject: [Bug go/89407] [9 Regression] go bootstrap failure on s390x starting with r268941
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/88973] [8/9 Regression] New -Wrestrict warning since r268048
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Bruce Korb <bkorb at gnu dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Bruce Korb <bkorb at gnu dot org> ---
(In reply to Martin Sebor from comment #4)
> canonicalize_pathname.c: In function ‘canonicalize_pathname’:
> canonicalize_pathname.c:61:2: warning: ‘strcpy’ accessing 1 byte at offsets
> [0, 9223372036854775807] and [0, 9223372036854775807] may overlap 1 byte at
> offset 0 [-Wrestrict]
> 61 | strcpy( result + start + 1, result + i + 2 );
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> strcpy (0x217f265 = "//bar", 0x217f267 = "bar"): 3
> /foo/bar
I have a copy of this code in my project, but I haven't been writing code for
several years now. How was this fixed? The best fix would be to determine the
string length and do memmove-s, but that's enough fiddling that I'd have to
clear cobwebs and spend a mess of time. If someone's already done that, ... :)
>From gcc-bugs-return-634256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 19:28:59 2019
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Subject: [Bug c++/80635] std::optional and bogus -Wmaybe-uninitialized warning
Date: Tue, 19 Feb 2019 19:28:00 -0000
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--- Comment #17 from Martin Sebor <msebor at gcc dot gnu.org> ---
The only way to avoid the warning in C (or std::optional) that I can think of
is to somehow obscure the access to the boolean flag. Using volatile works but
looks like it has a cost that users wouldn't be happy about. Using a relaxed
__atomic_store/_load also works and the optimized code doesn't look as bad, at
least not for the test case. Obviously, neither is pretty but might be worth
looking into some more as a workaround.
>From gcc-bugs-return-634257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:06:43 2019
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Tue, 19 Feb 2019 20:06:00 -0000
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--- Comment #9 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #8)
> I have a 'half-patch' that tries to change gfc_target_expr_size()
> to return a bool which is true for success and false for failure,
> and then deal with this return value.
>
> It seems that this also needs to be done for gfc_element_size().
A patch that does this has been posted here:
https://gcc.gnu.org/ml/fortran/2019-02/msg00153.html
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Subject: [Bug fortran/82480] KIND array returned by STAT too small for many values on CygWin platforms (and probably others)
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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--- Comment #3 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Actually, libgfortran already has a version of stat with integer(kind=int64)
arguments. If you compile with -fdefault-integer-8 you get that one, and the
expected output.
However, there seems to be no way of calling the int64 version without
redefining the default integer kind. That should be fixable.
>From gcc-bugs-return-634259-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:20:38 2019
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Subject: [Bug fortran/80408] Problems with SIGNAL, pthread and print together
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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--- Comment #3 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Indeed, this is invalid, as the GFortran I/O library is anything by
async-signal-safe.
>From gcc-bugs-return-634260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:34:41 2019
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Subject: [Bug fortran/77908] Array operation fails for arrays with "long" indices
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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--- Comment #5 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Confirmed on x86_64-apple-darwin16.7.0 with "8.2.0 (Homebrew GCC 8.2.0)".
If I change bignumber to "huge(1_long) -1" the testcase works correctly.
Unless someone has an idea how to generate the loop so the index doesn't wrap
around while at the same time not regressing in performance, I'd say we close
this as WONTFIX.
>From gcc-bugs-return-634262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:37:17 2019
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Subject: [Bug target/50928] m32c ICE building RTEMS
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #21 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Joel Sherrill from comment #20)
> I filed this in 2011 and we dropped RTEMS support for the m32c last year for
> our next release. If you all think it is fixed, please feel free to close it.
OK.
>From gcc-bugs-return-634261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:37:12 2019
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Subject: =?UTF-8?B?W0J1ZyBsaWJzdGRjKysvODk0MDJdIFs5IFJlZ3Jlc3Npb25dIHdhcm5pbmc6?= =?UTF-8?B?IOKAmHZvaWQgX1pOS1N0NGhhc2hJZUVjbEVlKCnigJkgc3BlY2lmaWVzIGxl?= =?UTF-8?B?c3MgcmVzdHJpY3RpdmUgYXR0cmlidXRlIHRoYW4gaXRzIHRhcmdldA==?Date: Tue, 19 Feb 2019 20:37:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> Created attachment 45766 [details]
> gcc9-pr89402.patch
>
> Untested fix.
This patch is OK for trunk if it passes tests.
>From gcc-bugs-return-634263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 20:50:41 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Tue, 19 Feb 2019 20:50:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
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--- Comment #2 from Harald Anlauf <anlauf at gmx dot de> ---
The issue is probably not the LBOUND intrinsic, but the proper argument
association of the dummy argument of the subroutines. (There is at least
another PR regarding POINTER dummy arguments)
The sample code has:
subroutine foo_1(this)
real(c_float) :: this(..)
My reading of the F2018 FDIS regarding this case:
15.5.2 Actual arguments, dummy arguments, and argument association
15.5.2.4 Ordinary dummy variables
(1) The requirements in this subclause apply to actual arguments
that correspond to nonallocatable nonpointer dummy data objects.
(17) An actual argument of any rank may correspond to an
assumed-rank dummy argument. The rank and extents of the dummy
argument are the rank and extents of the corresponding actual
argument. The lower bound of each dimension of the dummy
argument is equal to one. The upper bound is equal to the
extent, except for the last dimension when the actual argument
is assumed-size.
That appears to be OK. Right?
For the POINTER dummy argument (foo_3):
subroutine foo_3(this)
real(c_float), pointer :: this(..)
Again, F2018 FDIS:
15.5.2.3 Argument association
(5) A present pointer dummy argument that corresponds to a
pointer actual argument becomes argument associated with that
actual argument.
Here I'd expect that we should actually get the same as if a pointer
association had taken place, c.f. PR85868 (so this one could be a duplicate?)
Finally:
subroutine foo_2(this)
real(c_float), allocatable :: this(..)
I couldn't find an appropriate reference here, so somebody else may have
something to say.
>From gcc-bugs-return-634264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:26:00 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86248] [7/8/9 Regression] LEN_TRIM in specification expression causes link failure
Date: Tue, 19 Feb 2019 21:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86248
Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
It is strange that changing the line
character(len=3),dimension(0:2),parameter :: darray_fixed =
(/"el0","el1","el2"/)
by
character(len=3),dimension(0:2),save :: darray_fixed = (/"el0","el1","el2"/)
I get exactly the same(!) tree-dump with 9-trunk, but different .o,
since running nm on the first case gives:
0000000000000000 R __test_module_MOD__test_module_PROC_darray_fixed
vs.
0000000000000000 D __test_module_MOD_darray_fixed
My poor understanding of the assembler suggests that this is the origin
of all trouble.
The fact that the combined file seems to work (links OK) is not proof that
everything is fine, again seen only from the assembler.
I have no idea where the strange name mangling comes from.
>From gcc-bugs-return-634265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:34:18 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/88326] [7/8/9 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Tue, 19 Feb 2019 21:34:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
Using my tentative fix for PR89266 I now get:
% gfc-x pr88326-z1.f90
pr88326-z1.f90:3:20:
3 | character :: y(1) = transfer('', x)
| 1
Error: Different shape for array assignment at (1) on dimension 1 (1 and 0)
% gfc-x pr88326-z2.f90
pr88326-z2.f90:3:23:
3 | character(0) :: y(1) = transfer('', x)
| 1
Error: Different shape for array assignment at (1) on dimension 1 (1 and 0)
% gfc-x pr88326-z3.f90
(No error).
Should be fixed when PR89266 is fixed.
>From gcc-bugs-return-634266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:37:04 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89405] [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
Date: Tue, 19 Feb 2019 21:37:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
-fno-weak: "This option exists only for testing, and should not be used by
end-users"
Failing assertion:
2957 /* Any code that creates entities with TREE_PUBLIC cleared should
2958 also set DECL_INTERFACE_KNOWN. */
2959 gcc_assert (TREE_PUBLIC (decl));
on this decl:
(gdb) call debug_tree (decl)
<var_decl 0x7ffff1a657e0 value
type <boolean_type 0x7ffff1a72888 bool readonly unsigned type_6 QI
size <integer_cst 0x7ffff18adf18 constant 8>
unit-size <integer_cst 0x7ffff18adf30 constant 1>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff1a72888 precision:1 min <integer_cst 0x7ffff18cf180 0> max <integer_cst
0x7ffff18cf1b0 1>>
readonly constant used static tree_1 tree_2 tree_3 unsigned nonlocal
in_system_header read decl_1 QI
../x86_64-pc-linux-gnu/libstdc++-v3/include/type_traits:59:45 size <integer_cst
0x7ffff18adf18 8> unit-size <integer_cst 0x7ffff18adf30 1>
align:8 warn_if_not_align:0 context <record_type 0x7ffff1a6ee70
integral_constant> initial <integer_cst 0x7ffff18cf180 0>
template-info 0x7ffff1a69ba0 chain <function_decl 0x7ffff1a6d500 __conv_op
>>
(gdb) call inform (decl.decl_minimal.locus, "")
In file included from
../x86_64-pc-linux-gnu/libstdc++-v3/include/bits/move.h:55,
from
../x86_64-pc-linux-gnu/libstdc++-v3/include/bits/nested_exception.h:40,
from ../../src/libstdc++-v3/libsupc++/exception:144,
from ../../src/libstdc++-v3/libsupc++/new:40,
from /tmp/test.cc:1:
../x86_64-pc-linux-gnu/libstdc++-v3/include/type_traits: At global scope:
../x86_64-pc-linux-gnu/libstdc++-v3/include/type_traits:59:45: note:
59 | static constexpr _Tp value = __v;
| ^~~~~
within:
/// integral_constant
template<typename _Tp, _Tp __v>
struct integral_constant
{
static constexpr _Tp value = __v;
The flag gets cleared here in maybe_commonize_var in the "else" suite of an "if
(flag_weak)":
5630 /* While for initialized variables, we must use internal
5631 linkage -- which means that multiple copies will not
5632 be merged. */
5633 TREE_PUBLIC (decl) = 0;
5634 DECL_COMMON (decl) = 0;
>From gcc-bugs-return-634267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:41:40 2019
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From: "jwerner at chromium dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89408] New: No constant folding when dereferencing string literals
Date: Tue, 19 Feb 2019 21:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89408
Bug ID: 89408
Summary: No constant folding when dereferencing string literals
Product: gcc
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See the following minimal test case:
int main(int argc, char **argv)
{
switch (argc) {
case "C"[0]:
return 1;
}
}
When compiling this, GCC throws the error:
test.c: In function 'main':
test.c:6:2: error: case label does not reduce to an integer constant
case "C"[0]:
^~~~
Obviously, since the string literal "C" is constant, it should be trivial to
reduce it to an integer constant, just as if I had written 'C'.
This may seem like a pointless construct, but it is useful when using token
stringification in macros (because the preprocessor doesn't allow you to
stringify directly to a character constant). For example, a macro that returns
the character keycode for the key combination Ctrl+X (for any Latin letter) can
be nicely written as:
#define CTRL(letter) (#letter[0] & 0x1f)
Unfortunately, this fails in switch statements due to the bug described here.
(When used in other contexts, looking through the disassembly shows that the
optimizer does in fact seem to be able to constant fold the whole expression at
some point.)
>From gcc-bugs-return-634268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:44:27 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89408] No constant folding when dereferencing string literals
Date: Tue, 19 Feb 2019 21:44:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See PR 44094.
>From gcc-bugs-return-634269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 21:46:36 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89408] No constant folding when dereferencing string literals
Date: Tue, 19 Feb 2019 21:46:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C defines integer constants different from C++.
>From gcc-bugs-return-634270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 22:37:45 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89409] New: [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
Date: Tue, 19 Feb 2019 22:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89409
Bug ID: 89409
Summary: [9 Regression] FAIL:
c-c++-common/ubsan/div-by-zero-[67].c
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Target: x32
On x32, r265691 gave
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O0 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O1 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O2 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -O3 -g output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-6.c -Os output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O0 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O1 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O2 output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -O3 -g output pattern test
FAIL: c-c++-common/ubsan/div-by-zero-7.c -Os output pattern test
>From gcc-bugs-return-634271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 22:39:12 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89410] New: internal compiler error: in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 19 Feb 2019 22:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89410
Bug ID: 89410
Summary: internal compiler error: in calculate_line_spans, at
diagnostic-show-locus.c:1237 after #line
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jg at jguk dot org
Target Milestone: ---
I know this is really improbable, a file with more than 2 Million lines, but
anyway.
I was a bit surprised to see the line number come and go in the output.
What would be best? if 2^31 2147483648 is the limit, maybe should just fix on
-1 above that number to prevent the ICE? Or is it worth extending to int64?
A
Godbolt trunk
gcc (GCC-Explorer-Build) 9.0.1 20190217
int main(void)
{
#warning first
#line 12147483647
#warning second
#line 112147483647
#warning third
#line 112147483647
#warning fifth
#line 1223372036854775807
#warning sixth
#line 9223372036854775807
#warning seventh
}
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:3:2: warning: #warning first [-Wcpp]
3 | #warning first
| ^~~~~~~
<source>:-737418241:2: warning: #warning second [-Wcpp]
<source>:-737418240:7: warning: line number out of range
<source>:478333951:2: warning: #warning third [-Wcpp]
<source>:478333952:7: warning: line number out of range
<source>:478333951:2: warning: #warning fifth [-Wcpp]
<source>:478333952:7: warning: line number out of range
<source>:-991952897:2: warning: #warning sixth [-Wcpp]
<source>:-991952896:7: warning: line number out of range
<source>:-1:2: warning: #warning seventh [-Wcpp]
<source>:-1: internal compiler error: in calculate_line_spans, at
diagnostic-show-locus.c:1237
Internal compiler error: Error reporting routines re-entered.
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned 1
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Subject: [Bug c/89410] internal compiler error: in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 19 Feb 2019 22:40:00 -0000
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--- Comment #1 from Jonny Grant <jg at jguk dot org> ---
This was brought up by Martin Sebor on gcc-help BTW.
https://gcc.gnu.org/ml/gcc-help/2019-02/msg00084.html
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
Date: Tue, 19 Feb 2019 22:42:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, what does it print? When it regressed?
>From gcc-bugs-return-634274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 22:42:31 2019
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Subject: [Bug c/89410] internal compiler error: in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 19 Feb 2019 22:42:00 -0000
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--- Comment #2 from Jonny Grant <jg at jguk dot org> ---
Would be good if the original source line number was retained along with the
#line override number. eg the ICE error has the wrong line number (hehe) ...
The ICE could show the actual line number (unless there is an option to show
the original line numbers as well as the #line override already?)
>From gcc-bugs-return-634275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 19 22:52:11 2019
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
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--- Comment #24 from Steve Ellcey <sje at gcc dot gnu.org> ---
See email strings at:
https://gcc.gnu.org/ml/fortran/2019-01/msg00276.html
https://gcc.gnu.org/ml/fortran/2019-02/msg00057.html
For more discussion.
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Tue, 19 Feb 2019 23:03:00 -0000
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 19 Feb 2019, marxin at gcc dot gnu.org wrote:
> Before the revision it was rejected with:
>
> atomic2.c: In function ‘func’:
> atomic2.c:49:8: error: x87 register return with x87 disabled
> ald1 = d1;
> ^
> atomic2.c:51:8: error: SSE register return with SSE disabled
> acd1 += ab1;
> ^
The code doesn't appear to involve such a return, so I don't see why it
should be rejected at all.
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-19
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r265665, specially:
@@ -387,18 +388,19 @@ uptr internal_dup2(int oldfd, int newfd) {
}
uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
-#if SANITIZER_NETBSD
- return internal_syscall_ptr(SYSCALL(readlink), path, buf, bufsize);
-#elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
- return internal_syscall(SYSCALL(readlinkat), AT_FDCWD,
- (uptr)path, (uptr)buf, bufsize);
+#if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
+ return internal_syscall(SYSCALL(readlinkat), AT_FDCWD, (uptr)path,
(uptr)buf,+ bufsize);
+#elif SANITIZER_OPENBSD
+ return internal_syscall(SYSCALL(readlinkat), AT_FDCWD, (uptr)path,
(uptr)buf,
+ bufsize);
#else
- return internal_syscall(SYSCALL(readlink), (uptr)path, (uptr)buf, bufsize);
+ return internal_syscall(SYSCALL(readlink), path, buf, bufsize);
^^^^^^^^^ These are bad for x32.
#endif
}
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Tue, 19 Feb 2019 23:11:00 -0000
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--- Comment #10 from Alan Modra <amodra at gmail dot com> ---
> NON_SPECIAL_REGS removal
The gcc docs say of register classes: "You should define a class for the union
of two classes whenever some instruction allows both classes."
So this would seem to be going in the wrong direction. We have quite a few
insns that allow gprs in one alternative and vsx/fpr/altivec in another.
I don't know whether the docs are up to date for ira/lra but my analysis of the
ppc-round3.c failure (see the notes in the patches I attached) after fixing
integer register move cost suggests that register allocation is better with
union classes available. Note that x86 does have union classes.
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Tue, 19 Feb 2019 23:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89392
--- Comment #5 from ctice at gcc dot gnu.org ---
I have been unable to reproduce this error, using the latest GCC and building
with VTV enabled. What architecture are you using? How are you configuring
your GCC build?
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
Date: Tue, 19 Feb 2019 23:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89409
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is submitted for compiler-rt:
https://reviews.llvm.org/D58413
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 00:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89410
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |5.2.0
Keywords| |ice-on-invalid-code
Last reconfirmed| |2019-02-20
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Summary|internal compiler error: in |[7/8/9 Regression] ICE in
|calculate_line_spans, at |calculate_line_spans, at
|diagnostic-show-locus.c:123 |diagnostic-show-locus.c:123
|7 after #line |7 after #line
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the styack trace below. According to my bisection the ICE was
introduced into GCC 6 by r233386:
r233386 | dmalcolm | 2016-02-12 14:18:03 -0500 (Fri, 12 Feb 2016) | 51 lines
PR other/69554: avoid excessive source printing for widely-separated locations
u.c: In function ‘main’:
u.c:3:2: warning: #warning first [-Wcpp]
3 | #warning first
| ^~~~~~~
u.c:-737418241:2: warning: #warning second [-Wcpp]
u.c:-737418240:7: warning: line number out of range
u.c:478333951:2: warning: #warning third [-Wcpp]
u.c:478333952:7: warning: line number out of range
u.c:478333951:2: warning: #warning fifth [-Wcpp]
u.c:478333952:7: warning: line number out of range
u.c:-991952897:2: warning: #warning sixth [-Wcpp]
u.c:-991952896:7: warning: line number out of range
u.c:-1:2: warning: #warning seventh [-Wcpp]
u.c:-1: internal compiler error: in calculate_line_spans, at
diagnostic-show-locus.c:1237
Internal compiler error: Error reporting routines re-entered.
0x20eff48 calculate_line_spans
/src/gcc/svn/gcc/diagnostic-show-locus.c:1237
0x20ef134 layout
/src/gcc/svn/gcc/diagnostic-show-locus.c:871
0x20f1e82 diagnostic_show_locus(diagnostic_context*, rich_location*,
diagnostic_t)
/src/gcc/svn/gcc/diagnostic-show-locus.c:2282
0x93fe57 c_diagnostic_finalizer
/src/gcc/svn/gcc/c-family/c-opts.c:171
0x20e7f33 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/src/gcc/svn/gcc/diagnostic.c:1020
0x20e84b0 diagnostic_impl
/src/gcc/svn/gcc/diagnostic.c:1159
0x20e9ceb internal_error(char const*, ...)
/src/gcc/svn/gcc/diagnostic.c:1540
0x20e9f53 fancy_abort(char const*, int, char const*)
/src/gcc/svn/gcc/diagnostic.c:1607
0x20eff48 calculate_line_spans
/src/gcc/svn/gcc/diagnostic-show-locus.c:1237
0x20ef134 layout
/src/gcc/svn/gcc/diagnostic-show-locus.c:871
0x20f1e82 diagnostic_show_locus(diagnostic_context*, rich_location*,
diagnostic_t)
/src/gcc/svn/gcc/diagnostic-show-locus.c:2282
0x93fe57 c_diagnostic_finalizer
/src/gcc/svn/gcc/c-family/c-opts.c:171
0x20e7f33 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/src/gcc/svn/gcc/diagnostic.c:1020
0x9078cf c_cpp_diagnostic(cpp_reader*, cpp_diagnostic_level,
cpp_warning_reason, rich_location*, char const*, __va_list_tag (*) [1])
/src/gcc/svn/gcc/c-family/c-common.c:6320
0x212ffac cpp_diagnostic_with_line
/src/gcc/svn/libcpp/errors.c:163
0x2130311 cpp_warning_with_line_syshdr(cpp_reader*, cpp_warning_reason,
unsigned int, unsigned int, char const*, ...)
/src/gcc/svn/libcpp/errors.c:238
0x212bce5 do_diagnostic
/src/gcc/svn/libcpp/directives.c:1147
0x212bda9 do_warning
/src/gcc/svn/libcpp/directives.c:1165
0x212a9af _cpp_handle_directive
/src/gcc/svn/libcpp/directives.c:541
0x213ec23 _cpp_lex_token
/src/gcc/svn/libcpp/lex.c:2609
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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From: "liuyingying19 at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89411] New: RISC-V backend will generate wrong instruction for longlong type like lw a3,-2048(a5)
Date: Wed, 20 Feb 2019 01:27:00 -0000
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Bug ID: 89411
Summary: RISC-V backend will generate wrong instruction for
longlong type like lw a3,-2048(a5)
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
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Hi Experts,
We are having below problem in the RISC-V backend.
https://sourceware.org/bugzilla/show_bug.cgi?id=24226
We can confirm it is a compiler bug at this point.
In our testcase, we are using the option –mcmodel = medlow and
-mexplicit_relocs, but we got the similar problem that binutils will generate
wrong instruction like lw a3,-2048(a5).
When compiled to .S file, the result is correct:
lui a5,%hi(g_3030)
lw a4,%lo(g_3030)(a5)
srli a4,a4,8
lw a3,%lo(g_3030+4)(a5)
After link, the result is not correct:
1db2a: 0002a7b7 lui a5,0x2c
1db2e: 7fc7a703 lw a4,2044(a5) # 2c7fc
<g_3030>
1db32: 8321 srli a4,a4,0x8
1db34: 8007a683 lw a3,-2048(a5)
The result of %lo(g_3030+4) should be 2044 + 4 = 2048, but the value 2048
overflowed the 12 bit signed value, turn to -2048 and cause problem.
Would you please git some advise on a workaround that is not going to affect
the code size.
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88368] [7/8/9 Regression] Improper ``use of deleted function''
Date: Wed, 20 Feb 2019 02:01:00 -0000
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Feb 20 02:00:29 2019
New Revision: 269032
URL: https://gcc.gnu.org/viewcvs?rev=269032&root=gcc&view=rev
Log:
PR c++/88368 - wrong 'use of deleted function'
Since my patch for 81359 allowed us to signal failure on return from
maybe_instantiate_noexcept, we no longer need to turn an error into
noexcept(false). We also need to handle NSDMI instantiation errors under
synthesized_method_walk. This change caused some instantiation context
notes to be lost in the testsuite, so I added push_tinst_level to
get_defaulted_eh_spec to restore that context.
* method.c (walk_field_subobs): Remember errors from get_nsdmi.
(get_defaulted_eh_spec): Call push_tinst_level.
* pt.c (maybe_instantiate_noexcept): Keep error_mark_node.
* typeck2.c (merge_exception_specifiers): Handle error_mark_node.
Added:
trunk/gcc/testsuite/g++.dg/ext/is_constructible3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/g++.dg/cpp0x/nsdmi3.C
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Subject: [Bug c++/88368] [7/8 Regression] Improper ``use of deleted function''
Date: Wed, 20 Feb 2019 02:02:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] Improper |[7/8 Regression] Improper
|``use of deleted function'' |``use of deleted function''
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
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Subject: [Bug c++/88380] [7/8/9 Regression] Sequence of not-explicitly initialised, initialised, variable length generates no initialiser
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Subject: [Bug c++/87921] [7/8/9 Regression] Incorrect error "storage size of [array] isn't known (when it is)
Date: Wed, 20 Feb 2019 02:25:00 -0000
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>From gcc-bugs-return-634288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 02:36:16 2019
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From: "helijia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88100] no warning reported when value for vec_splat_{su}{8,16} would overflow
Date: Wed, 20 Feb 2019 02:36:00 -0000
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--- Comment #4 from Li Jia He <helijia at gcc dot gnu.org> ---
Author: helijia
Date: Wed Feb 20 02:35:39 2019
New Revision: 269033
URL: https://gcc.gnu.org/viewcvs?rev=269033&root=gcc&view=rev
Log:
[rs6000] fix PR 88100, range check for vec_splat_{su}{8,16,32}
GCC revision 259524 implemented range check for the vec_splat_{su}{8,16,32}
builtins. However, as a consequence of the implementation, the range check
is not done correctly for the expected vspltis[bhw]Â instructions. Â The result
is that we may not get a valid error message if the valid range of the data
is exceeded.
Although the input of the function prototype of vec_splat_{su}{8,16,32} is
const int, the actual data usage range is limited to the data range of 5 bits
signed. We should limit the int_cst.val[0] data to the 5 bit signed data range
without any modification in the input arg0 parameter. However, the sext_hwi
function intercepts the data of TREE_INT_CST_LOW (arg0) as size bits in the
sext_hwi (TREE_INT_CST_LOW (arg0), size) statement. This will cause some of
the excess data to fall within the range of 5 bits signed, so that the correct
diagnostic information cannot be generated, we need to remove the sext_hwi to
ensure that the input data has not been modified.
This patch fix range check for the vec_splat_s[8,16,32] builtins. The argument
must be a 5-bit const int as specified for the vspltis[bhw] instructions.
for gcc/ChangeLog
PR target/88100
* gcc/config/rs6000/rs6000.c (rs6000_gimple_fold_builtin)
<case ALTIVEC_BUILTIN_VSPLTISB, ALTIVEC_BUILTIN_VSPLTISH,
ALTIVEC_BUILTIN_VSPLTISW>: Don't convert the operand before
range checking it.
for gcc/testsuite/ChangeLog
PR target/88100
* gcc/testsuite/gcc.target/powerpc/pr88100.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr88100.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 02:55:13 2019
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Subject: [Bug c++/87513] [8/9 Regression] ICE in write_expression, at cp/mangle.c:3050
Date: Wed, 20 Feb 2019 02:55:00 -0000
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>From gcc-bugs-return-634290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 04:22:47 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Wed, 20 Feb 2019 04:22:00 -0000
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to joseph@codesourcery.com from comment #3)
> On Tue, 19 Feb 2019, marxin at gcc dot gnu.org wrote:
>
> > Before the revision it was rejected with:
> >
> > atomic2.c: In function ‘func’:
> > atomic2.c:49:8: error: x87 register return with x87 disabled
> > ald1 = d1;
> > ^
> > atomic2.c:51:8: error: SSE register return with SSE disabled
> > acd1 += ab1;
> > ^
>
> The code doesn't appear to involve such a return, so I don't see why it
> should be rejected at all.
'-mno-80387'
'-msoft-float'
Generate output containing library calls for floating point.
*Warning:* the requisite libraries are not part of GCC. Normally
the facilities of the machine's usual C compiler are used, but this
cannot be done directly in cross-compilation. You must make your
own arrangements to provide suitable library functions for
cross-compilation.
On machines where a function returns floating-point results in the
80387 register stack, some floating-point opcodes may be emitted
even if '-msoft-float' is used.
In this case, library calls return floating point in SSE register.
>From gcc-bugs-return-634291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 05:03:57 2019
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89170] FAIL: net/http
Date: Wed, 20 Feb 2019 05:03:00 -0000
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--- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
I think this is due to an old bug in const_desc_htab. output_constant_def will
insert a value into const_desc_htab. If the hash table already has an entry
with the same hash value, this will cause the insertion to call
compare_constant. If the constant is an ADDR_EXPR, compare_constant will call
decode_addr_const. If the constant is an ADDR_EXPR of a number or string,
decode_addr_const will call output_constant_def. This recursive call to
output_constant_def will in its turn insert a value into const_desc_htab. If
the hash table is at just the right point, that recursive call can grow the
hash table. That will change the indexes that the outer hash table insertion
is dealing with. The eventual result is that the outer call to
output_constant_def returns a location that holds an entirely different
constant value. It's an unlikely chain of events, but for this particular test
case it causes a function to be called with the wrong string constant, leading
to the test failure.
>From gcc-bugs-return-634292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 06:56:19 2019
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Subject: [Bug inline-asm/89401] The generated object file does not automatically relocate the address using the cl link
Date: Wed, 20 Feb 2019 06:56:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>When I used nasm to generate object files it did it。
Since you are using top-level inline, GCC just passes it on to the assembler.
Report this to binutils instead (https://sourceware.org/bugzilla).
>From gcc-bugs-return-634293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 07:42:41 2019
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From: "sebastian.huber@embedded-brains.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67064] Register asm variable broken
Date: Wed, 20 Feb 2019 07:42:00 -0000
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--- Comment #33 from Sebastian Huber <sebastian.huber@embedded-brains.de> ---
(In reply to Eric Gallager from comment #32)
> (In reply to Martin Liška from comment #31)
> > Can the bug be marked as resolved?
>
> WAITING on a reply.
From my point of view it is fixed
I guess since Daniel Gutson didn't get an answer in the last four years, he
will unlikely get it in the future.
>From gcc-bugs-return-634294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 07:52:21 2019
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Subject: [Bug middle-end/89412] New: [8 Regression] bootstrap fails in libgfortran on powerpc64le-linux-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89412
Bug ID: 89412
Summary: [8 Regression] bootstrap fails in libgfortran on
powerpc64le-linux-gnu
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
seen with the 8.3 release candidate, tested in i686-linux-gnu (and reported for
mips64el and armhf as well), building flang:
$ cat cdpowi.i
typedef struct {
double a;
double b;
} c;
c d;
int e;
double f;
void g() {
_Complex h;
while (e) {
f = h;
*(c *)&h = d;
}
}
$ gcc -Wall -c -O1 cdpowi.i
during RTL pass: expand
cdpowi.i: In function 'g':
cdpowi.i:12:14: internal compiler error: in simplify_subreg, at
simplify-rtx.c:6273
*(c *)&h = d;
~~~~~~~~~^~~
Please submit a full bug report,
with preprocessed source if appropriate.
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Subject: =?UTF-8?B?W0J1ZyBsaWJzdGRjKysvODk0MDJdIFs5IFJlZ3Jlc3Npb25dIHdhcm5pbmc6?= =?UTF-8?B?IOKAmHZvaWQgX1pOS1N0NGhhc2hJZUVjbEVlKCnigJkgc3BlY2lmaWVzIGxl?= =?UTF-8?B?c3MgcmVzdHJpY3RpdmUgYXR0cmlidXRlIHRoYW4gaXRzIHRhcmdldA==?Date: Wed, 20 Feb 2019 07:58:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 07:57:41 2019
New Revision: 269034
URL: https://gcc.gnu.org/viewcvs?rev=269034&root=gcc&view=rev
Log:
PR libstdc++/89402
* src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
_GLIBCXX_PURE to the alias declaration.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/c++98/compatibility-ldbl.cc
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Wed, 20 Feb 2019 08:19:00 -0000
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--- Comment #6 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 19 Feb 2019, ctice at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89392
>
> --- Comment #5 from ctice at gcc dot gnu.org ---
> I have been unable to reproduce this error, using the latest GCC and building
> with VTV enabled. What architecture are you using? How are you configuring
> your GCC build?
I can reproduce on latest trunk when configuring with --disable-bootstrap
--enable-valgrind-annotations (it's just a development build).
But it also reproduces with system-installed gcc 7 and 8:
> g++-8 t.cc -O -flto -fvtable-verify=std
during GIMPLE pass: ealias
t.cc: In function ‘_GLOBAL__sub_I.00099_t’:
t.cc:4:4: internal compiler error: Segmentation fault
s t;
^
0x7ff556798fdf ???
> g++-7 t.cc -O -flto -fvtable-verify=std
t.cc: In function ‘_GLOBAL__sub_I.00099_t’:
t.cc:4:4: internal compiler error: Segmentation fault
s t;
^
Please submit a full bug report,
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
Date: Wed, 20 Feb 2019 08:32:00 -0000
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--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
for gcc/testsuite/gcc.dg/pr89037.c, valgrind says:
./gcc.dg/pr89037.c:9:9: warning: missing braces around initializer
[-Wmissing-braces]
9 | T a[] = { 1, 10000, 0x12345, 0xff000001, 1ULL << 63, (__int128) 1 <<
64,
| ^
| {} { } { } { } { } {
}
10 | ((__int128) 1 << 64) | 1 };
| { }
==11913== Invalid read of size 2
==11913== at 0x7F5B96: decode_field_reference(unsigned int, tree_node**,
long*, long*, machine_mode*, int*, int*, int*, tree_node**, tree_node**)
(fold-const.c:4327)
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to David Binderman from comment #3)
> for gcc/testsuite/gcc.dg/pr89037.c, valgrind says:
That's where I've minimized my testcase from.
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 08:37:00 -0000
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--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
There's another related issue, can it be covered on this ticket?
GCC does not show the part of the output below I marked with after commenting
out line 4 <-----
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:6:7: warning: line number out of range
6 | #line 9223372036854775807 <-----
| ^~~~~~~~~~~~~~~~~~~
int main(void)
{
// Note: Comment back in the next line to reproduce
//#line 12147483647
#line 9223372036854775807
}
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Subject: [Bug fortran/89413] New: [8/9 Regression] ICE in resolve_fl_derived, at fortran/resolve.c:14392
Date: Wed, 20 Feb 2019 08:39:00 -0000
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Bug ID: 89413
Summary: [8/9 Regression] ICE in resolve_fl_derived, at
fortran/resolve.c:14392
Product: gcc
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gfortran-9.0.0-alpha20190217 snapshot (r268974) ICEs when compiling the
following testcase:
program sj
type :: t5 ()
class (t5 ()), pointer :: ys
end type t5
end program sj
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190217 -c j1kbey21.f90
f951: internal compiler error: in resolve_fl_derived, at
fortran/resolve.c:14392
0x574e6f resolve_fl_derived
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/resolve.c:14392
0x813497 resolve_symbol
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/resolve.c:14773
0x83c002 do_traverse_symtree
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/symbol.c:4156
0x820505 resolve_types
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/resolve.c:16685
0x81243e gfc_resolve(gfc_namespace*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/resolve.c:16799
0x804206 resolve_all_program_units
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/parse.c:6073
0x804206 gfc_parse_file()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/parse.c:6323
0x851d8e gfc_be_parse_file
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190217/work/gcc-9-20190217/gcc/fortran/f95-lang.c:204
(While my target here is powerpc, the ICE is not target-specific.)
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Subject: [Bug c/89408] No constant folding when dereferencing string literals
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
One thing is optimization, which gcc is obviously able to constant fold this,
the other is the C language, which requires a constant expression (language
term) and this expression is not such a constant expression. So, it is not
valid C (and not valid C++98, but valid C++11 and later).
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From: "doko at debian dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89412] [8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
Date: Wed, 20 Feb 2019 08:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89412
Matthias Klose <doko at debian dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8 Regression] bootstrap |[8/9 Regression] gcc ICE in
|fails in libgfortran on |simplify_subreg, at
|powerpc64le-linux-gnu |simplify-rtx.c:6273 on
| |i686-linux-gnu
--- Comment #1 from Matthias Klose <doko at debian dot org> ---
also seen on the trunk, checked r268955.
>From gcc-bugs-return-634303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 08:56:54 2019
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Subject: [Bug fortran/89413] [8/9 Regression] ICE in resolve_fl_derived, at fortran/resolve.c:14392
Date: Wed, 20 Feb 2019 08:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Target Milestone|--- |8.3
>From gcc-bugs-return-634304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 08:59:42 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
Date: Wed, 20 Feb 2019 08:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89412
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-20
Known to work|8.2.0 |6.1.0
Target Milestone|--- |7.5
Summary|[8/9 Regression] gcc ICE in |[7/8/9 Regression] gcc ICE
|simplify_subreg, at |in simplify_subreg, at
|simplify-rtx.c:6273 on |simplify-rtx.c:6273 on
|i686-linux-gnu |i686-linux-gnu
Ever confirmed|0 |1
Known to fail| |6.2.0, 7.1.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fails for me with GCC 8.1.0 and 8.2.0 as well on i?86-linux (and x86_64 with
-m32). Also GCC 7 and GCC 6 (but 6.1.0 is fine).
>From gcc-bugs-return-634305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 09:01:17 2019
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c++/89404] [7/8/9 Regression] ICE in build_value_init_noctor, at cp/init.c:467
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/89403] [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-634310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 09:28:48 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
Date: Wed, 20 Feb 2019 09:28:00 -0000
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Middle-end wants to create a subreg of BLKmode:
#3 0x0000000000cd5899 in simplify_gen_subreg
(outermode=outermode@entry=E_DCmode, op=op@entry=0x7fffea778240,
innermode=E_BLKmode, byte=byte@entry=...)
at ../../git/gcc/gcc/simplify-rtx.c:6709
6709 newx = simplify_subreg (outermode, op, innermode, byte);
(gdb) p outermode
$1 = E_DCmode
(gdb) p innermode
$2 = E_BLKmode
(gdb) p debug_rtx (op)
(mem/c:BLK (symbol_ref:SI ("d") [flags 0x2] <var_decl 0x7ffff7ffbab0 d>) [3 d+0
S16 A32])
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Subject: [Bug other/89347] gc-sections doesn't remove unused bss section variables.
Date: Wed, 20 Feb 2019 09:47:00 -0000
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--- Comment #3 from Maninder Singh <maninder1.s at samsung dot com> ---
But its not mentioned in gc-section or data-section manual pages, either that
needs updation or it need to be handled by -fdata-section flag only.
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Optimize-Options.html#Optimize-Options
-ffunction-sections
-fdata-sections
Place each function or data item into its own section in the output file if the
target supports arbitrary sections. The name of the function or the name of the
data item determines the section’s name in the output file.
Use these options on systems where the linker can perform optimizations to
improve locality of reference in the instruction space. Most systems using the
ELF object format have linkers with such optimizations. On AIX, the linker
rearranges sections (CSECTs) based on the call graph. The performance impact
varies.
Together with a linker garbage collection (linker --gc-sections option) these
options may lead to smaller statically-linked executables (after stripping).
On ELF/DWARF systems these options do not degenerate the quality of the debug
information. There could be issues with other object files/debug info formats.
Only use these options when there are significant benefits from doing so. When
you specify these options, the assembler and linker create larger object and
executable files and are also slower. These options affect code generation.
They prevent optimizations by the compiler and assembler using relative
locations inside a translation unit since the locations are unknown until link
time. An example of such an optimization is relaxing calls to short call
instructions.
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Subject: [Bug c/87924] OpenACC wait clauses without async-arguments
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--- Comment #4 from Chung-Lin Tang <cltang at gcc dot gnu.org> ---
Author: cltang
Date: Wed Feb 20 10:09:53 2019
New Revision: 269036
URL: https://gcc.gnu.org/viewcvs?rev=269036&root=gcc&view=rev
Log:
Correction of ChangeLog entry, Thomas provided the code for this change.
2019-02-19 Thomas Schwinge <thomas@codesourcery.com>
PR c/87924
* openmp.c (gfc_match_omp_clauses): Add representation of wait clause
without argument as 'wait (GOMP_ASYNC_NOVAL)'.
Modified:
trunk/gcc/fortran/ChangeLog
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Subject: [Bug fortran/89413] [PDT] ICE in resolve_fl_derived, at fortran/resolve.c:14392
Date: Wed, 20 Feb 2019 10:10:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-20
CC| |pault at gcc dot gnu.org
Blocks| |82173
Summary|[8/9 Regression] ICE in |[PDT] ICE in
|resolve_fl_derived, at |resolve_fl_derived, at
|fortran/resolve.c:14392 |fortran/resolve.c:14392
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed, but it is not exactly a regression.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82173
[Bug 82173] [meta-bug] Parameterized derived type errors
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Wed, 20 Feb 2019 10:19:00 -0000
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--- Comment #3 from Bader at lrz dot de <Bader at lrz dot de> ---
I agree with Harald's assessment. The test case as delivered by me is indeed
incorrectly written for the POINTER and ALLOCATABLE cases, in both of which I
believe the bounds should be taken from the actual argument (versus remapping
them). This has historical reasons (ifort has the POINTER and ALLOCATABLE case
wrong), and the F2018 drafts did pick up some additional words in the last
phase of corrections (see 8.5.8.7 para 1:
"The bounds and shape of an assumed-rank entity with the ALLOCATABLE or POINTER
attribute are determined as specified in 8.5.8.4."
Regards
Reinhold
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Subject: [Bug driver/88262] gcc uses crt1.o in place of Scrt1.o when the main function is in a PIC shared lib
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--- Comment #20 from Egeyar Bagcioglu <egeyar.bagcioglu at oracle dot com> ---
This issue is fixed in gold for binutils 2.33:
https://sourceware.org/bugzilla/show_bug.cgi?id=23870
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Wed, 20 Feb 2019 10:32:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I agree with Harald's assessment. The test case as delivered by me
> is indeed incorrectly written for the POINTER and ALLOCATABLE cases,
> in both of which I believe the bounds should be taken from the actual
> argument (versus remapping them).
So is the PR valid or not?
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Wed, 20 Feb 2019 10:47:00 -0000
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--- Comment #5 from Bader at lrz dot de <Bader at lrz dot de> ---
The corrected test case passes all tests, so the PR can be closed. Sorry for
the noise.
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From: "paolo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84536] [7/8/9 Regression] ICE with non-type template parameter
Date: Wed, 20 Feb 2019 10:47:00 -0000
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--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Feb 20 10:47:02 2019
New Revision: 269037
URL: https://gcc.gnu.org/viewcvs?rev=269037&root=gcc&view=rev
Log:
/cp
2019-02-20 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84536
* pt.c (tsubst_init): Diagnose an initializer expanding to an
empty list of expressions; tweak wrt dependent types.
(regenerate_decl_from_template): For VAR_DECLs call tsubst_init
instead of tsubst_expr.
/testsuite
2019-02-20 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84536
* g++.dg/cpp1y/var-templ60.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/var-templ60.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/88973] [8/9 Regression] New -Wrestrict warning since r268048
Date: Wed, 20 Feb 2019 11:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88973
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Bruce Korb from comment #5)
> (In reply to Martin Sebor from comment #4)
>
> > canonicalize_pathname.c: In function ‘canonicalize_pathname’:
> > canonicalize_pathname.c:61:2: warning: ‘strcpy’ accessing 1 byte at offsets
> > [0, 9223372036854775807] and [0, 9223372036854775807] may overlap 1 byte at
> > offset 0 [-Wrestrict]
> > 61 | strcpy( result + start + 1, result + i + 2 );
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > strcpy (0x217f265 = "//bar", 0x217f267 = "bar"): 3
> > /foo/bar
>
> I have a copy of this code in my project, but I haven't been writing code
> for several years now. How was this fixed? The best fix would be to
> determine the string length and do memmove-s, but that's enough fiddling
> that I'd have to clear cobwebs and spend a mess of time. If someone's
> already done that, ... :)
There's an upstream bug:
https://sourceforge.net/p/autogen/bugs/193/
and I'm working on patch candidate.
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Subject: [Bug tree-optimization/88973] [8/9 Regression] New -Wrestrict warning since r268048
Date: Wed, 20 Feb 2019 11:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88973
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #4)
> I've created a test case using the canonicalize_pathname function showing
> that it does, in fact, cause an overlap to take place. The following line
> in the output of the test case
>
Thank you very much Martin for it! Btw. ASAN prints nice error about
overlapping arguments:
gcc -DPATHNAME='"/home//marxin"' -Wall canonicalize_pathname.c
-fsanitize=address -g && ./a.out
=================================================================
==14653==ERROR: AddressSanitizer: strcpy-param-overlap: memory ranges
[0x602000000016,0x60200000001d) and [0x602000000017, 0x60200000001e) overlap
#0 0x7ffff72051de (/usr/lib64/libasan.so.5+0x4b1de)
#1 0x40137c in canonicalize_pathname /tmp/canonicalize_pathname.c:25
#2 0x401857 in main /tmp/canonicalize_pathname.c:64
#3 0x7ffff7018b7a in __libc_start_main ../csu/libc-start.c:308
#4 0x4010e9 in _start (/tmp/a.out+0x4010e9)
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89414] New: wrong code with -Og -fno-forward-propagate -fno-tree-fre
Date: Wed, 20 Feb 2019 11:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89414
Bug ID: 89414
Summary: wrong code with -Og -fno-forward-propagate
-fno-tree-fre
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 45769
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45769&action=edit
reduced testcase
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -Og -fno-forward-propagate -fno-tree-fre
testcase.c -static
$ qemu-arm ./a.out
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190219 (experimental) (GCC)
In the assembly output:
foo:
@ args = 8, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, lr} @
@ testcase.c:5: a = __builtin_parityll (a);
movw r4, #:lower16:a @ tmp124,
movt r4, #:upper16:a @ tmp124,
ldr r0, [r4] @ a, a
asr r1, r0, #31 @, a,
bl __paritydi2 @
@ testcase.c:5: a = __builtin_parityll (a);
str r0, [r4] @ tmp139, a
@ testcase.c:6: b = __builtin_bswap64 (h);
mov r2, #0 @ tmp131,
@ testcase.c:6: b = __builtin_bswap64 (h);
movw r3, #:lower16:b @ tmp132,
movt r3, #:upper16:b @ tmp132,
str r2, [r3] @ tmp131, b
@ testcase.c:7: __builtin_memset (&h, b, 1);
strb r2, [sp, #4] @ tmp131, MEM[(void *)&h]
*** ^^^ this overwrites the return address *** ('h' has no stack slot
allocated)
@ testcase.c:9: }
mov r0, r2 @, tmp131
pop {r4, pc} @
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01645.html
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89415] New: gcc.dg/sinatan-1.c FAILs
Date: Wed, 20 Feb 2019 13:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89415
Bug ID: 89415
Summary: gcc.dg/sinatan-1.c FAILs
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Target Milestone: ---
Target: sparc-sun-solaris2.11, aarch64-unknown-linux-gnu,
hppa2.0w-hp-hpux11.11, hppa64-hp-hpux11.11,
i586-unknown-freebsd11.2, ia64-suse-linux-gnu,
moxie-unknown-elf, s390x-ibm-linux-gnu,
spu-unknown-elf, x86_64-unknown-freebsd11.2,
x86_64-w64-mingw32
Between 20190218 (r268990) and 20190219 (r269021), the gcc.dg/sinatan-1.c began
to FAIL:
+FAIL: gcc.dg/sinatan-1.c execution test
I see it on 32 and 64-bit Solaris/SPARC, but quite a number of other targets is
affected, too.
Thread 2 received signal SIGABRT, Aborted.
[Switching to Thread 1 (LWP 1)]
0xfec7e740 in __lwp_sigqueue () from /lib/libc.so.1
(gdb) where
#0 0xfec7e740 in __lwp_sigqueue () from /lib/libc.so.1
#1 0xfebb99f0 in raise () from /lib/libc.so.1
#2 0xfeb8b2d0 in abort () from /lib/libc.so.1
#3 0x0001126c in main ()
at /vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.dg/sinatan-1.c:85
Maybe this is due to
2019-02-19 Richard Biener <rguenther@suse.de>
PR middle-end/88074
* toplev.c (do_compile): Initialize mpfr's exponent range
based on available float modes.
* gcc.dg/pr88074.c: New testcase.
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Subject: [Bug middle-end/89415] gcc.dg/sinatan-1.c FAILs
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug middle-end/89415] gcc.dg/sinatan-1.c FAILs
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #1 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Yes, bisect confirmed it's due to that commit (r269015)
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Subject: [Bug middle-end/89415] gcc.dg/sinatan-1.c FAILs
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--- Comment #2 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I'm not sure it's worth opening another regression report, but that same commit
creates regressions in fortran on arm:
FAIL: gfortran.dg/integer_exponentiation_3.F90 -O0 (test for warnings, line
173)
FAIL: gfortran.dg/integer_exponentiation_3.F90 -O1 (test for warnings, line
173)
FAIL: gfortran.dg/integer_exponentiation_3.F90 -O2 (test for warnings, line
173)
FAIL: gfortran.dg/integer_exponentiation_3.F90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for warnings,
line 173)
FAIL: gfortran.dg/integer_exponentiation_3.F90 -O3 -g (test for warnings,
line 173)
FAIL: gfortran.dg/integer_exponentiation_3.F90 -Os (test for warnings, line
173)
>From gcc-bugs-return-634327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 13:35:13 2019
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Subject: [Bug c++/67064] Register asm variable broken
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #34 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Sebastian Huber from comment #33)
> (In reply to Eric Gallager from comment #32)
> > (In reply to Martin Liška from comment #31)
> > > Can the bug be marked as resolved?
> >
> > WAITING on a reply.
>
> From my point of view it is fixed
>
> I guess since Daniel Gutson didn't get an answer in the last four years, he
> will unlikely get it in the future.
ok, closing then.
>From gcc-bugs-return-634328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 13:36:17 2019
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Subject: [Bug middle-end/89415] gcc.dg/sinatan-1.c FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01650.html
>From gcc-bugs-return-634329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 13:46:33 2019
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Subject: [Bug c++/89405] [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
Date: Wed, 20 Feb 2019 13:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45770
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45770&action=edit
gcc9-pr89405.patch
Untested fix.
>From gcc-bugs-return-634330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 13:47:24 2019
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Subject: [Bug fortran/89385] Incorrect members of C descriptor for an allocatable object
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I get
FAIL: this->elem_len -7
FAIL: this->type
FAIL: this->rank 0
FAIL: this->attribute
FAIL: dim[0]
FAIL: dim[1]
FAIL: that->elem_len
FAIL: that->type
FAIL: that->rank
FAIL: that->attribute
FAIL: dim[0]
Due to
#include "ISO_Fortran_binding.h"
this PR compiles on trunk (9.0) only.
>From gcc-bugs-return-634331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 13:52:34 2019
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Subject: [Bug fortran/89348] Fortran Command Options documentation fixes
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch approved at https://gcc.gnu.org/ml/fortran/2019-02/msg00116.html.
As a general comment, there is no point to attach change logs to bugzilla:
it is enough to add them when submitting the patches to the mailing lists.
I also think there is no need to file a PR for such trivialities.
>From gcc-bugs-return-634332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:10:04 2019
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
Date: Wed, 20 Feb 2019 14:10:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
It has been my understanding that C interoperable CHARACTER should be of length
1,
e.g., pr46496 comment 0, item f.
Has it been changed in the extensions in C interoperable?
If yes, could you please provide a pointer?
>From gcc-bugs-return-634333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:12:23 2019
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Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
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--- Comment #12 from avieira at gcc dot gnu.org ---
Author: avieira
Date: Wed Feb 20 14:11:43 2019
New Revision: 269039
URL: https://gcc.gnu.org/viewcvs?rev=269039&root=gcc&view=rev
Log:
[GCC] PR target/86487: fix the way 'uses_hard_regs_p' handles paradoxical
subregs
gcc/ChangeLog:
2019-02-20 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR target/86487
* lra-constraints.c(uses_hard_regs_p): Fix handling of
paradoxical SUBREGS.
gcc/testsuite/ChangeLog:
2019-02-20 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR target/86487
* gcc.target/arm/pr86487.c: New.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr86487.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:16:09 2019
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Subject: [Bug fortran/46496] Missing strlen check / interop warnings with BIND(C) and non-C_* kinds
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
b) -Wno-c-binding-type silences the warnings related to C binding.
It remains in this PR the missed warnings in d) and e).
>From gcc-bugs-return-634335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:33:57 2019
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Subject: [Bug rtl-optimization/89414] wrong code with -Og -fno-forward-propagate -fno-tree-fre
Date: Wed, 20 Feb 2019 14:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89414
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-20
CC| |jakub at gcc dot gnu.org,
| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can reproduce even with r208764 (oldest arm cross I have around).
Looks like a backend issue to me, in *.ira we still have:
(insn 32 42 33 2 (set (mem/c:QI (reg/f:SI 103 afp) [0 MEM[(void *)&h]+0 S1 A8])
(subreg:QI (reg:SI 132) 0)) "pr89414.c":7:3 189 {*arm_movqi_insn}
(expr_list:REG_DEAD (reg:SI 132)
(nil)))
and it is eliminated to:
(insn 32 42 33 2 (set (mem/c:QI (plus:SI (reg/f:SI 13 sp)
(const_int 4 [0x4])) [0 MEM[(void *)&h]+0 S1 A8])
(reg:QI 2 r2 [132])) "pr89414.c":7:3 189 {*arm_movqi_insn}
(nil))
even when pro_and_epilogue adds:
(insn/f 51 8 52 2 (parallel [
(set (mem/c:BLK (pre_modify:SI (reg/f:SI 13 sp)
(plus:SI (reg/f:SI 13 sp)
(const_int -8 [0xfffffffffffffff8]))) [2 A8])
(unspec:BLK [
(reg:SI 4 r4)
] UNSPEC_PUSH_MULT))
(use (reg:SI 14 lr))
]) "pr89414.c":4:1 -1
(expr_list:REG_FRAME_RELATED_EXPR (sequence [
(set/f (reg/f:SI 13 sp)
(plus:SI (reg/f:SI 13 sp)
(const_int -8 [0xfffffffffffffff8])))
(set/f (mem/c:SI (reg/f:SI 13 sp) [2 S4 A32])
(reg:SI 4 r4))
(set/f (mem/c:SI (plus:SI (reg/f:SI 13 sp)
(const_int 4 [0x4])) [2 S4 A32])
(reg:SI 14 lr))
])
(nil)))
in the prologue, so sp+4 can't be right. So, either something changed in the
frame size computation between RA and pro_and_epilogue (that would be a bug) or
the afp -> sp + offset elimination is incorrect.
>From gcc-bugs-return-634336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:35:17 2019
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Subject: [Bug rtl-optimization/89414] wrong code with -Og -fno-forward-propagate -fno-tree-fre
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-march=armv7-a -mfpu=vfpv4 -mfloat-abi=hard -Og -fno-forward-propagate
-fno-tree-fre is what I've been using for options.
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Subject: [Bug middle-end/89415] [9 Regression] gcc.dg/sinatan-1.c FAILs
Date: Wed, 20 Feb 2019 14:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Summary|gcc.dg/sinatan-1.c FAILs |[9 Regression]
| |gcc.dg/sinatan-1.c FAILs
>From gcc-bugs-return-634338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:44:32 2019
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89366
--- Comment #2 from Bader at lrz dot de <Bader at lrz dot de> ---
Fortran 2018 FDIS section 18.3.6, para 2, item 5, bullet 2:
(5) any dummy argument without the VALUE attribute corresponds to a formal
parameter of the prototype that is of a pointer type, and either
• the dummy argument is interoperable with an entity of the referenced type
(ISO/IEC 9899:2011, 6.2.5, 7.19, and 7.20.1) of the formal parameter,
• the dummy argument is a nonallocatable nonpointer variable of type CHARACTER
with assumed character length and the formal parameter is a pointer to
CFI_cdesc_t,
Note that as for all Fortran objects that don't have a C analog,
interoperability is on the level of the procedure interface (not the object!),
and the matching entity on the C side is the descriptor.
Regards
Reinhold
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--- Comment #3 from Bader at lrz dot de <Bader at lrz dot de> ---
Created attachment 45771
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45771&action=edit
C code to be called
Added the C side function call.
>From gcc-bugs-return-634340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 14:54:18 2019
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Subject: [Bug libstdc++/89416] New: [regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Wed, 20 Feb 2019 14:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89416
Bug ID: 89416
Summary: [regression] std::vector<std::thread,
custom_allocator>::push_back no longer builds.
Product: gcc
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Created attachment 45772
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45772&action=edit
Test-case.
The attached test-case no longer builds.
It's a reduction from:
https://searchfox.org/mozilla-central/rev/93905b660fc99a5d52b683690dd26471daca08c8/tools/fuzzing/libfuzzer/FuzzerDriver.cpp#244
Both g++ and clang error. g++ errors with:
In file included from
/usr/include/c++/9/x86_64-redhat-linux/bits/c++allocator.h:33,
from /usr/include/c++/9/bits/allocator.h:46,
from /usr/include/c++/9/memory:63,
from /usr/include/c++/9/thread:39,
from t.cpp:1:
/usr/include/c++/9/ext/new_allocator.h: In instantiation of ‘void
__gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up =
std::thread; _Args = {const std::thread&}; _Tp = std::thread]’:
/usr/include/c++/9/bits/alloc_traits.h:226:6: required by substitution of
‘template<class _Alloc2, class> static std::true_type
std::allocator_traits<fuzzer_allocator<std::thread>
>::__construct_helper<std::thread, const std::thread&>::__test<_Alloc2,
<template-parameter-1-2> >(int) [with _Alloc2 = fuzzer_allocator<std::thread>;
<template-parameter-1-2> = <missing>]’
/usr/include/c++/9/bits/alloc_traits.h:233:40: required from ‘struct
std::allocator_traits<fuzzer_allocator<std::thread>
>::__construct_helper<std::thread, const std::thread&>’
/usr/include/c++/9/bits/alloc_traits.h:250:2: required by substitution of
‘template<class _Tp, class ... _Args> static
std::_Require<std::__and_<std::__not_<typename
std::allocator_traits<fuzzer_allocator<std::thread> >::__construct_helper<_Tp,
_Args>::type>, std::is_constructible<_Tp, _Args ...> > >
std::allocator_traits<fuzzer_allocator<std::thread> >::_S_construct<_Tp, _Args
...>(fuzzer_allocator<std::thread>&, _Tp*, _Args&& ...) [with _Tp =
std::thread; _Args = {const std::thread&}]’
/usr/include/c++/9/bits/alloc_traits.h:350:26: required by substitution of
‘template<class _Tp, class ... _Args> static decltype
(std::allocator_traits<fuzzer_allocator<std::thread> >::_S_construct(__a, __p,
(forward<_Args>)(std::allocator_traits::construct::__args)...))
std::allocator_traits<fuzzer_allocator<std::thread> >::construct<_Tp, _Args
...>(fuzzer_allocator<std::thread>&, _Tp*, _Args&& ...) [with _Tp =
std::thread; _Args = {const std::thread&}]’
/usr/include/c++/9/bits/alloc_traits.h:587:38: required by substitution of
‘template<class _Up, class _Tp, class> static std::true_type
std::__is_alloc_insertable_impl<fuzzer_allocator<std::thread> >::_M_select<_Up,
_Tp, <template-parameter-1-3> >(int) [with _Up = const std::thread&; _Tp =
std::thread; <template-parameter-1-3> = <missing>]’
/usr/include/c++/9/bits/alloc_traits.h:598:57: required from ‘class
std::__is_alloc_insertable_impl<fuzzer_allocator<std::thread> >’
/usr/include/c++/9/bits/alloc_traits.h:616:12: required from ‘struct
std::__is_move_insertable<fuzzer_allocator<std::thread> >’
/usr/include/c++/9/bits/stl_vector.h:446:28: required from ‘static constexpr
bool std::vector<_Tp, _Alloc>::_S_use_relocate() [with _Tp = std::thread;
_Alloc = fuzzer_allocator<std::thread>]’
/usr/include/c++/9/bits/vector.tcc:459:44: required from ‘void
std::vector<_Tp, _Alloc>::_M_realloc_insert(std::vector<_Tp, _Alloc>::iterator,
_Args&& ...) [with _Args = {void (&)()}; _Tp = std::thread; _Alloc =
fuzzer_allocator<std::thread>; std::vector<_Tp, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<std::thread*, std::vector<std::thread,
fuzzer_allocator<std::thread> > >; typename std::_Vector_base<_Tp,
_Alloc>::pointer = std::thread*]’
/usr/include/c++/9/bits/vector.tcc:121:4: required from ‘void
std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {void (&)()};
_Tp = std::thread; _Alloc = fuzzer_allocator<std::thread>]’
t.cpp:30:30: required from here
/usr/include/c++/9/ext/new_allocator.h:145:20: error: use of deleted function
‘std::thread::thread(const std::thread&)’
145 | noexcept(noexcept(::new((void *)__p)
| ^~~~~~~~~~~~~~~~~~
146 | _Up(std::forward<_Args>(__args)...)))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from t.cpp:1:
/usr/include/c++/9/thread:142:5: note: declared here
142 | thread(const thread&) = delete;
| ^~~~~~
clang++ errors with:
In file included from t.cpp:1:
In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/thread:39:
In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/memory:63:
In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/allocator.h:46:
In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/x86_64-redhat-linux/bits/c++allocator.h:33:
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/ext/new_allocator.h:146:8:
error: call to deleted constructor of 'std::thread'
_Up(std::forward<_Args>(__args)...)))
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:226:52:
note: in instantiation of exception specification for
'construct<std::thread, const std::thread &>' requested here
typename = decltype(std::declval<_Alloc2*>()->construct(
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:228:23:
note: in instantiation of default argument for
'__test<fuzzer_allocator<std::thread> >'
required here
static true_type __test(int);
^~~~~~~~~~~
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:233:26:
note: while substituting deduced template arguments into function template
'__test' [with
_Alloc2 = fuzzer_allocator<std::thread>, $1 = (no value)]
using type = decltype(__test<_Alloc>(0));
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:237:2:
note: in instantiation of template class
'std::allocator_traits<fuzzer_allocator<std::thread>
>::__construct_helper<std::thread, const std::thread &>' requested here
using __has_construct
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:248:25:
note: in instantiation of template type alias '__has_construct' requested here
_Require<__and_<__not_<__has_construct<_Tp, _Args...>>,
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:350:14:
note: (skipping 5 contexts in backtrace; use -ftemplate-backtrace-limit=0 to
see all)
-> decltype(_S_construct(__a, __p, std::forward<_Args>(__args)...))
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/stl_vector.h:446:29:
note: in instantiation of template class
'std::__is_move_insertable<fuzzer_allocator<std::thread> >' requested
here
return _S_nothrow_relocate(__is_move_insertable<_Tp_alloc_type>{});
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/vector.tcc:459:29:
note: in instantiation of member function 'std::vector<std::thread,
fuzzer_allocator<std::thread>
>::_S_use_relocate' requested here
if _GLIBCXX17_CONSTEXPR (_S_use_relocate())
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/vector.tcc:121:4:
note: in instantiation of function template specialization
'std::vector<std::thread,
fuzzer_allocator<std::thread> >::_M_realloc_insert<std::thread>'
requested here
_M_realloc_insert(end(), std::forward<_Args>(__args)...);
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/stl_vector.h:1201:9:
note: in instantiation of function template specialization
'std::vector<std::thread,
fuzzer_allocator<std::thread> >::emplace_back<std::thread>' requested
here
{ emplace_back(std::move(__x)); }
^
t.cpp:25:5: note: in instantiation of member function 'std::vector<std::thread,
fuzzer_allocator<std::thread> >::push_back' requested here
V.push_back(std::thread(WorkerThread));
^
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/thread:142:5:
note: 'thread' has been explicitly marked deleted here
thread(const thread&) = delete;
^
1 error generated.
gcc -v:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/9/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,fortran,objc,obj-c++,ada,go,d,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin
--enable-initfini-array --with-isl --enable-offload-targets=nvptx-none
--without-cuda-driver --enable-gnu-indirect-function --enable-cet
--with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 9.0.1 20190209 (Red Hat 9.0.1-0.4) (GCC)
clang -v
clang version 7.0.1 (Fedora 7.0.1-6.fc30)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/i686-redhat-linux/9
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-redhat-linux/9
Found candidate GCC installation: /usr/lib/gcc/i686-redhat-linux/9
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/9
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-redhat-linux/9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
>From gcc-bugs-return-634341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:04:32 2019
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
Date: Wed, 20 Feb 2019 15:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45773
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45773&action=edit
gcc9-pr89091.patch
I'd just return NULL in that case. While in theory we could just
build_nonstandard_integer_type or similar, I think for these > 64 bit bitfields
it will be hardly a win and we'd need to ensure the backend will be able to
deal with those types.
>From gcc-bugs-return-634342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:10:29 2019
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
Date: Wed, 20 Feb 2019 15:10:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Fortran 2018 FDIS section 18.3.6, para 2, item 5, bullet 2:
On my draft it is probably
18.3.7 Interoperability of procedures and procedure interfaces
For
character(kind=c_char,len=:), allocatable :: s2
character(kind=c_char,len=:), pointer :: s3
> • the dummy argument is a nonallocatable nonpointer variable of type
> CHARACTER with assumed character length and the formal parameter
> is a pointer to CFI_cdesc_t,
does not seem to apply.
Is it not rather
> • the dummy argument is allocatable, assumed-shape, assumed-rank,
> or a pointer without the CONTIGUOUS attribute, and the formal parameter
> is a pointer to CFI_cdesc_t?
>From gcc-bugs-return-634343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:12:25 2019
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Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r237429. Don't know why this has anything to do with libgfortran
powerpc64le-linux bootstrap, that worked for me just fine in 8.3-rc1.
Slightly adjusted testcase:
struct S { double a, b; } d;
int e;
double f;
void
foo ()
{
_Complex h;
while (e)
{
f = h;
*(struct S *) &h = d;
}
}
>From gcc-bugs-return-634344-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:18:40 2019
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Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
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--- Comment #5 from Matthias Klose <doko at debian dot org> ---
bug title was a cut and paste error
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 15:19:00 -0000
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--- Comment #5 from Jonny Grant <jg at jguk dot org> ---
What appears to be a related issue. the "line number out of supported range"
does not show, even when gcc outputs a negative line number. Three test cases
below
I believe that the #line that pushes beyond 2^31 (The limit on my 64bit
machine) does not cause an error. Only the #pragma message following does.
Just a note:
// 2^31 - 1. Any more than this, and A1 overflows as "line3.c:-2147483648:9:
note: #pragma message: A1"
#line 2147483647
Anyway, the output
Current output from gcc trunk godbolt:
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:-2147483647:9: note: #pragma message: B
Compiler returned: 0
What I expected:
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>: warning: #line number 2147483649 out of supported range
<source>:-2147483647:9: note: #pragma message: B
Compiler returned: 0
The program:
int main(void)
{
#line 2147483649
#pragma message "B "
}
It would be good if GCC could change to show the offending number, and write it
as #line. As GCC does in other output:
int main(void)
{
#line FOO
}
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:3:7: error: "FOO" after #line is not a positive integer
3 | #line FOO
| ^~~
Compiler returned: 1
Another program which does manage to show "warning: line number out of out of
supported range"
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:3:7: warning: line number out of range
3 | #line 112147483647
| ^~~~~~~~~~~~
Compiler returned: 0
int main(void)
{
#line 112147483647
}
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
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--- Comment #5 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Feb 20 15:23:47 2019
New Revision: 269040
URL: https://gcc.gnu.org/viewcvs?rev=269040&root=gcc&view=rev
Log:
Revert:
PR target/89397
* config/i386/i386.c (ix86_option_override_internal): Set
opts->x_ix86_fpmath to FPMATH_387 when SSE is disabled.
gcc/testsuite/
PR target/89397
* gcc.target/i386/pr89397.c: New test.
Removed:
trunk/gcc/testsuite/gcc.target/i386/pr89397.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Created attachment 45774
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45774&action=edit
Patch
I came up with this patch; it survives bootstrap®rtesting, but am not sure
if it's correct.
>From gcc-bugs-return-634348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:31:18 2019
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 15:31:00 -0000
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--- Comment #6 from Jonny Grant <jg at jguk dot org> ---
Could this show the offending number in the "line number out of range" message?
And even the origin of the LINE1 macro too?
Actual:
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:4:7: warning: line number out of range
4 | #line LINE1
| ^~~~~
Compiler returned: 0
Expected eg:
#1 with x86-64 gcc (trunk)
<source>: In function 'main':
<source>:4:7: warning: line number 112147483647 out of range
4 | #line LINE1
| ^~~~~
LINE1 was defined in header.h:10
Compiler returned: 0
#define LINE1 112147483647
int main(void)
{
#line LINE1
}
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Jakub: should we go with your patch?
>From gcc-bugs-return-634350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:33:18 2019
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From: "Bader at lrz dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
Date: Wed, 20 Feb 2019 15:33:00 -0000
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--- Comment #5 from Bader at lrz dot de <Bader at lrz dot de> ---
No. The dummy argument of the procedure process_string is declared
character(kind=c_char,len=*), intent(in) :: this
there is no POINTER or ALLOCATABLE attribute there.
Regards
Reinhold
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Subject: [Bug rtl-optimization/88347] ICE in begin_move_insn, at sched-ebb.c:175
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Subject: [Bug c++/87844] ICE in tsubst_copy using non-constant expression as a non-type template argument
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-634353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:40:02 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
Date: Wed, 20 Feb 2019 15:40:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 45774
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45774
Patch
Well, for the decode_field_reference, I think it is essential not to change
*exp_ if returning NULL, because the caller uses lr_arg/rr_arg without checking
whether it returned NULL or not. The c_common_type_for_size change is
independent of the rest, I'd find it too risky for GCC9, but could be posted
for GCC10.
Sorry for looking on this, I saw you have it ASSIGNED but didn't see any patch
on gcc-patches nor recent progress in the PR and thought some input might help.
>From gcc-bugs-return-634354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:43:04 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
Date: Wed, 20 Feb 2019 15:43:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45775
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45775&action=edit
gcc9-pr89412.patch
Untested fix.
>From gcc-bugs-return-634355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 15:44:22 2019
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Wed, 20 Feb 2019 15:44:00 -0000
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--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c (revision 269040)
+++ config/i386/i386.c (working copy)
@@ -50689,7 +50689,7 @@
static void
ix86_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
{
- if (!TARGET_80387 && !TARGET_SSE_MATH)
+ if (!TARGET_80387 && !(TARGET_SSE && TARGET_SSE_MATH))
return;
tree exceptions_var = create_tmp_var_raw (integer_type_node);
if (TARGET_80387)
@@ -50724,7 +50724,7 @@
tree update_fldenv = build_call_expr (fldenv, 1, fenv_addr);
*update = build2 (COMPOUND_EXPR, void_type_node, *update,
update_fldenv);
}
- if (TARGET_SSE_MATH)
+ if (TARGET_SSE && TARGET_SSE_MATH)
{
tree mxcsr_orig_var = create_tmp_var_raw (unsigned_type_node);
tree mxcsr_mod_var = create_tmp_var_raw (unsigned_type_node);
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 15:52:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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Subject: [Bug target/88055] ICE in extract_insn, at recog.c:2305 on ppc64le
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 15:56:00 -0000
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--- Comment #7 from Jonny Grant <jg at jguk dot org> ---
(In reply to Jonny Grant from comment #6)
> Could this show the offending number in the "line number out of range"
> message? And even the origin of the LINE1 macro too?
clang shows the origin of the offending LINE1 macro
#1 with x86-64 clang (trunk)
<source>:4:7: error: #line directive requires a positive integer argument
#line LINE1
^
<source>:1:15: note: expanded from macro 'LINE1'
#define LINE1 112147483647
^
1 error generated.
Compiler returned: 1
>From gcc-bugs-return-634359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:01:07 2019
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Subject: [Bug target/80505] FAIL: gcc.dg/ipa/iinline-attr.c scan-ipa-dump inline "hooray[^\\n]*inline copy in test"
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This all works now. Please reopen if you still see FAILs.
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Subject: [Bug tree-optimization/88973] [8/9 Regression] New -Wrestrict warning since r268048
Date: Wed, 20 Feb 2019 16:05:00 -0000
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
The Asan warning is much clearer because it's based on actually observed
values. This instance of the -Wrestrict warning is based on a heuristic: "we
think the copy may overlap because it is within the same object and we can't
prove that the offsets and the size assure it doesn't happen."
There may be a way to reword the warning to make things a little bit clearer
but I don't think we can match the Asan form. When the offsets and the size
are completely unbounded we could just avoid printing them altogether. That
would make it:
'strcpy' accessing the same array may overlap [-Werror=restrict]
When the size is known it would give us:
'strcpy' accessing N bytes of the same array may overlap [-Werror=restrict]
and when the offsets are known but the size isn't:
'strcpy' accessing the same array at offsets [O1, O2] and [O3, O4] may
overlap [-Werror=restrict]
and so on.
There are many forms of the -Wrestrict warning already: singular size (1 byte)
vs plural size (bytes) vs closed range (between X and Y bytes) vs open range (X
or more bytes), constant offsets vs closed ranges ([X, Y]), definitely overlaps
vs may overlap, and others, and because of internationalization most have to be
hardcoded and can't be easily parameterized, so adding a new form into the mix
isn't completely straightforward.
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Subject: [Bug c++/52130] missing check for matching underlying type during instantiation of enum member of class template
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
What should the correct diagnostic message for it say instead then?
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Subject: [Bug middle-end/89270] [9 regression] AVR ICE: verify_gimple failed
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
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--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Wed Feb 20 16:20:50 2019
New Revision: 269042
URL: https://gcc.gnu.org/viewcvs?rev=269042&root=gcc&view=rev
Log:
libsanitizer: Restore internal_readlink for x32
Cherry-pick compiler-rt revision 354451:
r316591 has
@@ -389,13 +383,11 @@ uptr internal_dup2(int oldfd, int newfd) {
}
uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
-#if SANITIZER_NETBSD
- return internal_syscall_ptr(SYSCALL(readlink), path, buf, bufsize);
-#elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
+#if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
return internal_syscall(SYSCALL(readlinkat), AT_FDCWD,
(uptr)path, (uptr)buf, bufsize);
#else
- return internal_syscall(SYSCALL(readlink), (uptr)path, (uptr)buf, bufsize);
+ return internal_syscall_ptr(SYSCALL(readlink), path, buf, bufsize);
#endif
}
which dropped the (uptr) cast and broke x32. This patch puts back the
(uptr) cast to restore x32 and fixes:
https://bugs.llvm.org/show_bug.cgi?id=40783
Differential Revision: https://reviews.llvm.org/D58413
PR sanitizer/89409
* sanitizer_common/sanitizer_linux.cc (internal_readlink):
Cherry-pick compiler-rt r354451.
Modified:
trunk/libsanitizer/ChangeLog
trunk/libsanitizer/sanitizer_common/sanitizer_linux.cc
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Subject: [Bug sanitizer/89308] [8 only] The sanitizers do no longer work on GCC 8 with newer kernels
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89308
Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
We do not currently see problems in practice. Suspending.
>From gcc-bugs-return-634365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:34:33 2019
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From: "federico.kircheis at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/89417] New: helgrind detects a lock order violation inside std::scoped_lock
Date: Wed, 20 Feb 2019 16:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89417
Bug ID: 89417
Summary: helgrind detects a lock order violation inside
std::scoped_lock
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: federico.kircheis at gmail dot com
Target Milestone: ---
Created attachment 45776
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45776&action=edit
helgrind log output
Hello,
Im unsure if this is a bug or feature request, depending on who is "wrong"
(g++/valgrind)
I'm using g++ (Debian 8.2.0-14) 8.2.0, and the program is compiled with
following flags: "-std=c++17 -lpthread"
Consider following snippet of code:
----
int main(){
std::mutex m1;
std::mutex m2;
int data1{};
int data2{};
auto f1 = std::async(std::launch::async, [&](){
std::scoped_lock sl{m1, m2};
++data1;
++data2;
return data1;
});
auto f2 = std::async(std::launch::async, [&](){
std::scoped_lock sl{m2, m1};
++data1;
++data2;
return data2;
});
return f1.get() + f2.get(); // result should be 3
}
----
helgrind (valgrind-3.14.0) reports that the lock order is violated: error
message attached)
it prints exactly the same error for
----
int main(){
std::mutex m1;
std::mutex m2;
int data1{};
int data2{};
auto f1 = std::async(std::launch::async, [&](){
std::lock_guard lg1{m1};std::lock_guard lg2{m2};
++data1;
++data2;
return data1;
});
auto f2 = std::async(std::launch::async, [&](){
std::lock_guard lg1{m1};std::lock_guard lg2{m2};
++data1;
++data2;
return data2;
});
return f1.get() + f2.get(); // result should be 3
}
----
In case helgrind is correct, it seems that there are some issues behind
std::scoped_lock, since it was explicitly designed for solving issues with lock
order.
In case helgrind (and possibly for the same reason other tools) is wrong, this
is would be a feature request.
A possible fix (or improvement) would be for `std::scoped_lock` to sort its
arguments by address (since std::mutex are not copyable or movable, and thus
their address should remain constant):
----
auto make_lock(std::mutex& m1_, std::mutex& m2_) {
const auto mless = std::less<std::mutex*>{};
return std::scoped_lock{*std::min(&m1_, &m2_, mless), *std::max(&m1_,
&m2_, mless)};
}
int main(){
std::mutex m1;
std::mutex m2;
int data1{};
int data2{};
auto f1 = std::async(std::launch::async, [&](){
auto sl = make_lock(m1,m2);
++data1;
++data2;
return data1;
});
auto f2 = std::async(std::launch::async, [&](){
auto sl = make_lock(m2,m1);
++data1;
++data2;
return data2;
});
return f1.get() + f2.get(); // result should be 3
}
----
in this case, helgrind does not generate any warning.
I do not know the internal algorithm of `std::scoped_lock`, so it might be
completely wrong, but sorting by address might also avoid possible live-lock
issues.
>From gcc-bugs-return-634366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:35:25 2019
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Subject: [Bug c/35592] Want attribute to enable precision loss warning
Date: Wed, 20 Feb 2019 16:35:00 -0000
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
Created attachment 45777
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45777&action=edit
testcase
(In reply to felix-gcc from comment #6)
> Sure. For example:
>
> char* c=malloc(lseek(somefd,0,SEEK_END);
>
> on a platform where off_t is 64-bit, but where size_t is 32-bit. For
> example: i686-linux with #define _FILE_OFFSET_BITS 64.
>
> Now that I'm thinking about it, would it be possible to have a generic
> overflow warning in that context? For example,
>
> malloc(p->len+1)
>
> So that gcc sees I'm adding something there, and if the range is not clamped
> down before that gives an error?
I combined those into a testcase which is attached. I thought the new
-Walloc-size-larger-than= warning that (I think it was) Martin added would
catch it, but apparently not?
>From gcc-bugs-return-634367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:42:49 2019
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 16:42:00 -0000
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The C standard does not allow the line number (in a #line directive) to be
smaller than 1 or bigger than 0x7fffffff. It says nothing about actually
having this many lines, or overflowing the line number with following lines,
but I suppose we could disallow that as well.
As the ICEs show many parts of GCC assume line numbers increase, so the
wrap-around signed integer is a problem (it is anyway, it's UB in the compiler
itself). We could make the line number saturate, but this particular ICE won't
go away unless line numbers are strictly increasing (or the code is changed).
Changing the type to 64 bit won't help at all either, of course (we never
actually see source files of 2G lines, already).
>From gcc-bugs-return-634369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:51:56 2019
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Subject: [Bug ipa/86395] add support of -fopt-info-inline in inliner
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |WAITING
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #6)
> David: Can the bug be marked as resolved?
WAITING on a reply
>From gcc-bugs-return-634368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:51:12 2019
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Subject: [Bug other/84889] Ideas on revamping how we format diagnostics
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #15 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #14)
> David: Can the bug be marked as resolved?
WAITING on a reply
>From gcc-bugs-return-634370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:53:33 2019
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Subject: [Bug c/53063] encode group options in the .opt files
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #12 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #11)
> Can the bug be marked as resolved?
WAITING on a reply
>From gcc-bugs-return-634371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:58:34 2019
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Subject: [Bug target/80204] macosx-version-min wrong for macOS Sierra 10.12.3
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to simon from comment #6)
> Selected output from "gcc empty.c -v -Wl,-v" on macOS 10.14.1 (darwin
> 18.2.0),
> with gcc 9.0.0 20181103 built on x86_64-apple-darwin15, correctly showing
> -mmacosx-version-min=10.14.0 & equivalents throughout.
>
> Equivalent success with 8.1.0.
>
> --------------------------------------------------------
>
> Target: x86_64-apple-darwin15
> Configured with: /Volumes/Miscellaneous/tmp/gcc/configure
> --prefix=/Volumes/Miscellaneous/tmp/opt/gcc-9.0.0
> --without-libiconv-prefix --disable-libmudflap --disable-libstdcxx-pch
> --disable-libsanitizer --disable-libcc1 --disable-libcilkrts
> --disable-multilib --disable-nls --enable-languages=c,c++,ada
> --disable-bootstrap --host=x86_64-apple-darwin15
> --target=x86_64-apple-darwin15 --build=x86_64-apple-darwin15
> --with-boot-ldflags='-static-libstdc++ -static-libgcc
> -Wl,-headerpad_max_install_names'
> Thread model: posix
> gcc version 9.0.0 20181103 (experimental) (GCC)
> COLLECT_GCC_OPTIONS='-v' '-mmacosx-version-min=10.14.0'
> '-asm_macosx_version_min=10.14' '-mtune=core2'
> /opt/gcc-9.0.0/bin/../libexec/gcc/x86_64-apple-darwin15/9.0.0/cc1
> -quiet -v -iprefix
> /opt/gcc-9.0.0/bin/../lib/gcc/x86_64-apple-darwin15/9.0.0/
> -D__DYNAMIC__ empty.c -fPIC -quiet -dumpbase empty.c
> -mmacosx-version-min=10.14.0 -mtune=core2 -auxbase empty -version
> -o /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc2Zzpgh.s
>
> --------------------------------------------------------
>
> as -arch x86_64 -v -force_cpusubtype_ALL -mmacosx-version-min=10.14
> -o /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc9YzAyh.o
> /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc2Zzpgh.s
> Apple LLVM version 10.0.0 (clang-1000.10.44.4)
> Target: x86_64-apple-darwin18.2.0
> Thread model: posix
> InstalledDir: /Library/Developer/CommandLineTools/usr/bin
> "/Library/Developer/CommandLineTools/usr/bin/clang" -cc1as
> -triple x86_64-apple-macosx10.14.0 -filetype obj
> -main-file-name cc2Zzpgh.s -target-cpu penryn -fdebug-compilation-dir
> /Users/simon/tmp -dwarf-debug-producer Apple LLVM version 10.0.0
> (clang-1000.10.44.4) -dwarf-version=4 -mrelocation-model pic -o
> /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc9YzAyh.o
> /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc2Zzpgh.s
>
> --------------------------------------------------------
>
> /usr/bin/ld -dynamic -arch x86_64 -macosx_version_min 10.14.0
> -weak_reference_mismatches non-weak -o a.out
> -L/opt/gcc-9.0.0/bin/../lib/gcc/x86_64-apple-darwin15/9.0.0
> -L/opt/gcc-9.0.0/bin/../lib/gcc
> -L/opt/gcc-9.0.0/bin/../lib/gcc/x86_64-apple-darwin15/9.0.0/../../..
> -v /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc9YzAyh.o
> -no_compact_unwind -lSystem -lgcc_ext.10.5 -lgcc -lSystem -v
So, that sounds like a "yes, this can be closed"
>From gcc-bugs-return-634372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:58:49 2019
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug d/89418] New: D test cases fail on powerpc64le
Date: Wed, 20 Feb 2019 16:58:00 -0000
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Bug ID: 89418
Summary: D test cases fail on powerpc64le
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
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FAIL: gdc.test/compilable/ctfe_math.d -O2 output-exists ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -O2 -frelease output-exists
ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -frelease output-exists ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -g output-exists ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -g -O2 output-exists ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -g -O2 -frelease output-exists
ctfe_math.o
FAIL: gdc.test/compilable/ctfe_math.d -g -frelease output-exists ctfe_math.o
FAIL: gdc.test/compilable/test5227.d output-exists test5227.o
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-test/gcc/testsuite/gdc8/../../gdc
-B/home/seurer/gcc/build/gcc-test/gcc/testsuite/gdc8/../../
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never
-I/home/seurer/gcc/gcc-test/gcc/testsuite/../../libphobos/libdruntime
-I/home/seurer/gcc/gcc-test/gcc/testsuite/../../libphobos/src
-I/home/seurer/gcc/gcc-test/gcc/testsuite/../../libstdc++-v3/libsupc++ -g
-I/home/seurer/gcc/gcc-test/gcc/testsuite/gdc.test/compilable -c -o ctfe_math.o
compilable/ctfe_math.d
/home/seurer/gcc/gcc-test/libphobos/src/std/math.d:244:5: error: static assert
"Only 64-bit, 80-bit, and 128-bit reals are supported for LittleEndian CPUs"
compiler exited with status 1
package:
// The following IEEE 'real' formats are currently supported.
version (LittleEndian)
{
static assert(real.mant_dig == 53 || real.mant_dig == 64
|| real.mant_dig == 113,
"Only 64-bit, 80-bit, and 128-bit reals"~
" are supported for LittleEndian CPUs");
}
else
{
static assert(real.mant_dig == 53 || real.mant_dig == 106
|| real.mant_dig == 113,
"Only 64-bit and 128-bit reals are supported for BigEndian CPUs."~
" double-double reals have partial support");
}
I don't really know enough about D to diagnose this much further.
>From gcc-bugs-return-634373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 16:59:57 2019
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Subject: [Bug d/89418] D test cases fail on powerpc64le
Date: Wed, 20 Feb 2019 16:59:00 -0000
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc64le-unknown-linux-g
| |nu
Host| |powerpc64le-unknown-linux-g
| |nu
Build| |powerpc64le-unknown-linux-g
| |nu
--- Comment #1 from seurer at gcc dot gnu.org ---
Note that these error messages only occur on powerpc64le. BE seems to work OK.
>From gcc-bugs-return-634374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:04:37 2019
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Subject: [Bug c++/89357] alignas for automatic variables with alignment greater than 16 fails
Date: Wed, 20 Feb 2019 17:04:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|accepts-invalid |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-20
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.
The reason why the __attribute__ is accepted is because it's not considered a
C++ 11 form of specifying alignment and so it's subject to less checking (done
by the check_cxx_fundamental_alignment_constraints function).
The alignas form is considered a C++ form (has ATTR_FLAG_CXX11 bit set in flags
below) and so makes it pass the first test. The cxx_fundamental_alignment_p()
test also fails (the fundamental alignment on aarch64 is 16). The third if
statement is entered, followed by the else block of the inner if. There,
MAX_STACK_ALIGNMENT is used as the upper bound. On aarch64,
MAX_STACK_ALIGNMENT is defined to STACK_BOUNDARY which is 16, and that is why
alignas(128) is considered invalid. In contrast, on x86_64,
MAX_STACK_ALIGNMENT is defined to MAX_OFILE_ALIGNMENT, both of which are
2147483648.
So either MAX_STACK_ALIGNMENT on aarch64 is wrong or the test in
check_cxx_fundamental_alignment_constraint is wrong.
MAX_STACK_ALIGNMENT is defined in section 18.5 Storage Layout of the internals
manual as:
Biggest stack alignment guaranteed by the backend. Use this macro to specify
the maximum alignment of a variable on stack.
and with the following (far more descriptive) comment in gcc/defaults.h:
/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
effort stack alignment supported by the backend. If the backend
supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
boundary will limit the maximum guaranteed stack alignment. */
It's a little ambiguous but my guess is that MAX_STACK_ALIGNMENT is meant to be
the maximum alignment the back-end will maintain for the stack pointer in
general, independent of any overaligned variables, and isn't intended as
constraint on the alignment of explicitly overaligned stack variables. (I can
think of no reason why the back-end would impose any such constraint on the
stack.) If that's correct the test for MAX_STACK_ALIGNMENT is the bug. The
test was introduced with the implementation of the alignas specifier in
r192199.
check_cxx_fundamental_alignment_constraints (tree node,
unsigned align_log,
int flags)
{
bool alignment_too_large_p = false;
unsigned requested_alignment = (1U << align_log) * BITS_PER_UNIT;
unsigned max_align = 0;
if ((!(flags & ATTR_FLAG_CXX11) && !warn_cxx_compat)
|| (node == NULL_TREE || node == error_mark_node))
return true;
if (cxx_fundamental_alignment_p (requested_alignment))
return true;
if (VAR_P (node))
{
if (TREE_STATIC (node) || DECL_EXTERNAL (node))
/* For file scope variables and static members, the target supports
alignments that are at most MAX_OFILE_ALIGNMENT. */
max_align = MAX_OFILE_ALIGNMENT;
else
/* For stack variables, the target supports at most
MAX_STACK_ALIGNMENT. */
max_align = MAX_STACK_ALIGNMENT;
if (requested_alignment > max_align)
alignment_too_large_p = true;
}
>From gcc-bugs-return-634375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:05:41 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88294] [9 Regression] ICE on (invalid) C++11 code: in tsubst_copy, at cp/pt.c:15391
Date: Wed, 20 Feb 2019 17:05:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A similar test crashes:
bool b;
template<typename> struct A
{
void g () noexcept (b) { }
};
int main ()
{
A<int> a;
a.g ();
}
but that's PR88987.
>From gcc-bugs-return-634376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:11:32 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 17:11:00 -0000
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--- Comment #9 from Jonny Grant <jg at jguk dot org> ---
(In reply to Segher Boessenkool from comment #8)
> The C standard does not allow the line number (in a #line directive) to be
> smaller than 1 or bigger than 0x7fffffff. It says nothing about actually
> having this many lines, or overflowing the line number with following lines,
> but I suppose we could disallow that as well.
int main(void)
{
#line 0
}
#1 with x86-64 gcc (trunk)
Compiler returned: 0
Maybe zero could be disallowed too.
> As the ICEs show many parts of GCC assume line numbers increase, so the
> wrap-around signed integer is a problem (it is anyway, it's UB in the
> compiler
> itself). We could make the line number saturate, but this particular ICE
> won't
> go away unless line numbers are strictly increasing (or the code is changed).
> Changing the type to 64 bit won't help at all either, of course (we never
> actually see source files of 2G lines, already).
Not sure what is best here, I'm not knowledgeable of GCC, but maybe setting it
to -1 if it goes above, and then never increment again if(-1 == line) ...
>From gcc-bugs-return-634377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:13:30 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 17:13:00 -0000
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--- Comment #10 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #4)
> There's another related issue, can it be covered on this ticket?
>
> GCC does not show the part of the output below I marked with after
> commenting out line 4 <-----
>
> #1 with x86-64 gcc (trunk)
> <source>: In function 'main':
> <source>:6:7: warning: line number out of range
> 6 | #line 9223372036854775807 <-----
> | ^~~~~~~~~~~~~~~~~~~
>
>
>
>
> int main(void)
> {
> // Note: Comment back in the next line to reproduce
> //#line 12147483647
>
> #line 9223372036854775807
> }
What's happening is that GCC is honoring the earlier #line directive, and it
attempts to load the source for that line; there aren't that many lines in the
file, so it doesn't print anything.
>From gcc-bugs-return-634378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:18:40 2019
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Subject: [Bug c++/88572] error: braces around scalar initializer - should be a warning
Date: Wed, 20 Feb 2019 17:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88572
Will Wray <wjwray at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45683|0 |1
is obsolete| |
--- Comment #16 from Will Wray <wjwray at gmail dot com> ---
Created attachment 45778
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45778&action=edit
Updated patch addressing review comments
(Updated Change Log entry for decl.c)
Log:
PR c++/88572
* decl.c (reshape_init_r): Remove condition that was incorrectly
rejecting braces around scalar initializer within aggregate init.
Produce no warning. Add a conditional block rejecting braced-init
of scalar variable, including empty-brace value-initialization
that was being incorrectly accepted.
>From gcc-bugs-return-634379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:28:42 2019
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Subject: [Bug fortran/89385] Incorrect members of C descriptor for an allocatable object
Date: Wed, 20 Feb 2019 17:28:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 45779
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45779&action=edit
Draft patch
One typo, one stupid error and a couple of misunderstood bits in the standard
led to this.
The testcase provided runs OK and the patch bootstraps and regtests.
I will go through the other PRs that you provided and will see what further
fixes are required.
Thanks
Paul
>From gcc-bugs-return-634380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:31:54 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89419] New: [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
Date: Wed, 20 Feb 2019 17:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89419
Bug ID: 89419
Summary: [8/9 Regression] ICE in is_normal_capture_proxy
starting with r253601
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Target Milestone: ---
The following testcase started to ICE with -std=c++17 in r253601:
struct A;
struct B {
struct C { C (); C (C &); } b;
};
struct D { A operator* (); };
struct A {
template <typename T> void foo (T x) { x (this); }
};
struct E {
auto bar () { return e; }
D e;
};
struct F { B f; int g; };
int
main ()
{
E e;
auto f = *e.bar ();
auto i = [&] { F g; g.g = 1; auto h = [&](auto) { g.g = 0; }; f.foo (h);
return g; };
}
>From gcc-bugs-return-634381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:32:24 2019
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Subject: [Bug c++/89419] [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
Date: Wed, 20 Feb 2019 17:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P2
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>From gcc-bugs-return-634382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:39:13 2019
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Subject: [Bug c++/89420] New: [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
Date: Wed, 20 Feb 2019 17:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89420
Bug ID: 89420
Summary: [9 Regression] ICE: unexpected expression 'int()' of
kind cast_expr
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Changed between 20181028 and 20181104 (with any -std) :
$ cat z1.cc
template <explicit (int())>
$ g++-9-20190217 -c z1.cc
z1.cc:1:11: warning: 'explicit(bool)' only available with -std=c++2a or
-std=gnu++2a
1 | template <explicit (int())>
| ^~~~~~~~
z1.cc:1:26: internal compiler error: unexpected expression 'int()' of kind
cast_expr
1 | template <explicit (int())>
| ^
0x620880 cxx_eval_constant_expression
../../gcc/cp/constexpr.c:5001
0x622104 cxx_eval_outermost_constant_expr
../../gcc/cp/constexpr.c:5115
0x6243d0 maybe_constant_value(tree_node*, tree_node*, bool)
../../gcc/cp/constexpr.c:5347
0x74ade7 check_narrowing(tree_node*, tree_node*, int, bool)
../../gcc/cp/typeck2.c:931
0x5f95b0 convert_like_real
../../gcc/cp/call.c:7366
0x603692 build_converted_constant_expr(tree_node*, tree_node*, int)
../../gcc/cp/call.c:4215
0x6466d2 build_explicit_specifier(tree_node*, int)
../../gcc/cp/decl.c:16687
0x6ab02c cp_parser_function_specifier_opt
../../gcc/cp/parser.c:14236
0x6b6be0 cp_parser_decl_specifier_seq
../../gcc/cp/parser.c:13945
0x6ce143 cp_parser_parameter_declaration
../../gcc/cp/parser.c:22266
0x6cf003 cp_parser_template_parameter
../../gcc/cp/parser.c:15979
0x6cf003 cp_parser_template_parameter_list
../../gcc/cp/parser.c:15562
0x6d457d cp_parser_explicit_template_declaration
../../gcc/cp/parser.c:27955
0x6d457d cp_parser_template_declaration_after_export
../../gcc/cp/parser.c:27989
0x6d7119 cp_parser_declaration
../../gcc/cp/parser.c:13122
0x6d775e cp_parser_translation_unit
../../gcc/cp/parser.c:4698
0x6d775e c_parse_file()
../../gcc/cp/parser.c:41039
0x7962a0 c_common_parse_file()
../../gcc/c-family/c-opts.c:1155
>From gcc-bugs-return-634383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:43:18 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89421] New: [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Wed, 20 Feb 2019 17:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89421
Bug ID: 89421
Summary: [9 Regression] ICE in retrieve_specialization, at
cp/pt.c:1245
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Changed between 20181111 and 20181118 :
$ cat z1.cc
template < //>
auto c = []{ return []{}; }();
$ g++-9-20190217 -c z1.cc
z1.cc:2:29: internal compiler error: Segmentation fault
2 | auto c = []{ return []{}; }();
| ^
0xe32b7f crash_signal
../../gcc/toplev.c:326
0x7c6c75 tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/tree.h:3175
0x7c6c75 retrieve_specialization
../../gcc/cp/pt.c:1245
0x815564 instantiate_decl(tree_node*, bool, bool)
../../gcc/cp/pt.c:24335
0x6ef537 maybe_instantiate_decl
../../gcc/cp/decl2.c:5281
0x6f221c mark_used(tree_node*, int)
../../gcc/cp/decl2.c:5437
0x627aba build_over_call
../../gcc/cp/call.c:7945
0x63b0a8 build_op_call_1
../../gcc/cp/call.c:4671
0x63b0a8 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
../../gcc/cp/call.c:4700
0x83c0b3 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/cp/semantics.c:2586
0x78cad6 cp_parser_postfix_expression
../../gcc/cp/parser.c:7373
0x79bc95 cp_parser_unary_expression
../../gcc/cp/parser.c:8459
0x77347f cp_parser_cast_expression
../../gcc/cp/parser.c:9345
0x773c92 cp_parser_binary_expression
../../gcc/cp/parser.c:9446
0x774da9 cp_parser_assignment_expression
../../gcc/cp/parser.c:9742
0x774705 cp_parser_constant_expression
../../gcc/cp/parser.c:10026
0x774d51 cp_parser_initializer_clause
../../gcc/cp/parser.c:22702
0x779737 cp_parser_initializer
../../gcc/cp/parser.c:22642
0x79e683 cp_parser_default_argument
../../gcc/cp/parser.c:22537
0x79e683 cp_parser_parameter_declaration
../../gcc/cp/parser.c:22430
>From gcc-bugs-return-634384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:45:55 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
Date: Wed, 20 Feb 2019 17:45:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-20
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
r265641
>From gcc-bugs-return-634386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:46:47 2019
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Subject: [Bug c++/89422] New: [8/9 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
Date: Wed, 20 Feb 2019 17:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89422
Bug ID: 89422
Summary: [8/9 Regression] ICE in field_byte_offset, at
dwarf2out.c:19086
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Started with gcc-8 and option -g :
$ cat z1.cc
template <int> struct S
{
friend void foo (int a = []{ return 0; }()) {}
int b;
};
S<0> t;
$ g++-9-20190217 -c z1.cc
$
$ g++-9-20190217 -c z1.cc -g
z1.cc: In instantiation of 'struct S<0>':
z1.cc:6:6: required from here
z1.cc:3:28: internal compiler error: Segmentation fault
3 | friend void foo (int a = []{ return 0; }()) {}
| ^~~~~~~~~~~~~~~
0xba166f crash_signal
../../gcc/toplev.c:326
0x8ac58e field_byte_offset
../../gcc/dwarf2out.c:19086
0x8ad27d add_data_member_location_attribute
../../gcc/dwarf2out.c:19365
0x8adb96 gen_field_die
../../gcc/dwarf2out.c:24290
0x898b5f gen_field_die
../../gcc/dwarf2out.c:24266
0x898b5f gen_decl_die
../../gcc/dwarf2out.c:26419
0x89a6a7 gen_member_die
../../gcc/dwarf2out.c:25169
0x89a6a7 gen_struct_or_union_type_die
../../gcc/dwarf2out.c:25265
0x89a6a7 gen_tagged_type_die
../../gcc/dwarf2out.c:25466
0x89b1ac gen_type_die_with_usage
../../gcc/dwarf2out.c:25661
0x89a2b7 gen_tagged_type_die
../../gcc/dwarf2out.c:25435
0x89b1ac gen_type_die_with_usage
../../gcc/dwarf2out.c:25661
0x89ba66 gen_type_die
../../gcc/dwarf2out.c:25715
0x8988ce gen_decl_die
../../gcc/dwarf2out.c:26347
0x899376 dwarf2out_decl
../../gcc/dwarf2out.c:26892
0x89963c dwarf2out_type_decl
../../gcc/dwarf2out.c:26619
0xadd0c2 rest_of_type_compilation(tree_node*, int)
../../gcc/passes.c:339
0x615b4d finish_struct_1(tree_node*)
../../gcc/cp/class.c:7068
0x616f74 finish_struct(tree_node*, tree_node*)
../../gcc/cp/class.c:7212
0x6f97e6 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.c:18126
>From gcc-bugs-return-634385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:46:07 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
Date: Wed, 20 Feb 2019 17:46:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:48:58 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89403] [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
Date: Wed, 20 Feb 2019 17:48:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45780
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45780&action=edit
gcc9-pr89403.patch
Untested fix. The problem is that maybe_clone_body really doesn't expect to be
called multiple times on the same function.
>From gcc-bugs-return-634388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:52:43 2019
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Wed, 20 Feb 2019 17:52:00 -0000
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--- Comment #25 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Steve Ellcey from comment #24)
> See email strings at:
>
> https://gcc.gnu.org/ml/fortran/2019-01/msg00276.html
> https://gcc.gnu.org/ml/fortran/2019-02/msg00057.html
>
> For more discussion.
Sure, it looks like we simply need to reinstate Szabolc's patch with a #ifdef
arm/aarch64 around it. I need to find out whether a feclearexcept
(FE_ALL_EXCEPT) is necessary on Arm targets which can trap (very few exist
IIRC).
>From gcc-bugs-return-634389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:55:41 2019
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From: "ctice at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89423] New: -fvtable-verify does not work properly with -flto
Date: Wed, 20 Feb 2019 17:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89423
Bug ID: 89423
Summary: -fvtable-verify does not work properly with -flto
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
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When compiled with '-flto' the extra internal functions that VTV generates,and
which are necessary for it to work correctly, do not get propagated into the
final binary. You can see this compiling the bb_tests.cc test case in the
libvtv testsuite, and grepping for 'GLOBAL' in the final output:
$ /usr/local/google3/cmtice/gcc-fsf.root/usr/local/bin/g++ -o bb_tests
bb_tests.cc -O1 -fvtable-verify=std // Compile without flto
$ nm bb_tests | grep GLOBAL
0000000000601000 d _GLOBAL_OFFSET_TABLE_
0000000000400930 t _GLOBAL__sub_I.00099__Z14get_cond_value
$ /usr/local/google3/cmtice/gcc-fsf.root/usr/local/bin/g++ -o
bb_tests_flto bb_tests.cc -O1 -flto -fvtable-verify=std // Compile
with flto
$ nm bb_tests_flto | grep GLOBAL
0000000000601000 d _GLOBAL_OFFSET_TABLE_
>From gcc-bugs-return-634390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 17:56:11 2019
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Subject: [Bug middle-end/89423] -fvtable-verify does not work properly with -flto
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ctice at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 18:03:38 2019
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From: "raphael.monod at wanadoo dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/80408] Problems with SIGNAL, pthread and print together
Date: Wed, 20 Feb 2019 18:03:00 -0000
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--- Comment #4 from Raphael Monod <raphael.monod at wanadoo dot fr> ---
Thank you for your answer. But I don't understand why adding -lpthread option
change the behavior if I do not use any thread. Moreover, if I refer to this
page ( https://docs.oracle.com/cd/E19455-01/806-5257/gen-26/index.html ) write
statement seems to be async-signal safe ? Where am I wrong ?
Finaly, what can I do if I want to print a message in my trap function ?
Thank you for your interest to my problem.
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89421] [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Wed, 20 Feb 2019 18:03:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
r266056.
>From gcc-bugs-return-634393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 18:04:01 2019
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Subject: [Bug target/89400] [7/8/9 Regression] ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
Date: Wed, 20 Feb 2019 18:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r228540 compiled this fine with these options, r228940 already ICEs, though
with
pr89400.c: In function ‘foo’:
pr89400.c:7:1: error: unrecognizable insn:
}
^
(insn 9 8 10 2 (set (reg:SI 116)
(zero_extend:SI (unspec:HI [
(mem:HI (reg/f:SI 111 [ b.1_3 ]) [0 MEM[(char *
{ref-all})b.1_3]+0 S2 A8])
] UNSPEC_UNALIGNED_LOAD))) pr89400.c:6 -1
(nil))
Maybe started with r228643?
The invalid %-code appeared in between r230540 and r231340, maybe r231114 or
r230664 or r230663.
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Subject: [Bug target/89400] [7/8/9 Regression] ICE: output_operand: invalid %-code with -march=armv6kz -mthumb -munaligned-access
Date: Wed, 20 Feb 2019 18:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ramana at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
All the "unaligned_access" instructions use %? in the patterns (except the last
one) where %? is TARGET_32BIT specific.
If the unaligned loads/stores don't really work for thumb1, then
if (! opts_set->x_unaligned_access)
{
opts->x_unaligned_access = (TARGET_32BIT_P (opts->x_target_flags)
&& arm_arch6 && (arm_arch_notm || arm_arch7));
}
else if (opts->x_unaligned_access == 1
&& !(arm_arch6 && (arm_arch_notm || arm_arch7)))
{
warning (0, "target CPU does not support unaligned accesses");
opts->x_unaligned_access = 0;
}
should be changed to:
else if (opts->x_unaligned_access == 1
&& (!(arm_arch6 && (arm_arch_notm || arm_arch7))
|| !TARGET_32BIT_P (opts->x_target_flags)))
If the unaligned_access instructions are also for thumb1, then perhaps they
need to set predicable to no for !TARGET_32BIT e.g. based on isa attribute and
avoid using %? in the thumb1 alternative patterns.
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 18:21:00 -0000
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--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #9)
> Maybe zero could be disallowed too.
Yes, but maybe we need that for historical reasons.
> Not sure what is best here, I'm not knowledgeable of GCC, but maybe setting
> it to -1 if it goes above, and then never increment again if(-1 == line) ...
The testcase will still ICE then... The assert is
/* The spans must be ordered. */
gcc_assert (prev->m_first_line < next->m_first_line);
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Subject: [Bug target/84530] -mfunction-return=thunk does not work for simple_return_pop_internal insn
Date: Wed, 20 Feb 2019 18:44:00 -0000
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Ev Drikos <drikosev at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |drikosev at gmail dot com
--- Comment #7 from Ev Drikos <drikosev at gmail dot com> ---
Hello,
There is perhaps a Darwin specific problem reproduced in various versions, ie
8.2:
Not really sure if the problem I face is indeed related to this PR.
$ gcc8 -mfunction-return=thunk gcc/testsuite/gcc.target/i386/ret-thunk-26.c
-arch i386
Undefined symbols for architecture i386:
"__x86_return_thunk", referenced from:
_foo in ccQ3DlYI.o
_bar in ccQ3DlYI.o
_main in ccQ3DlYI.o
(maybe you meant: ___x86_return_thunk)
ld: symbol(s) not found for architecture i386
collect2: error: ld returned 1 exit status
$
$ gcc8 -v
Using built-in specs.
COLLECT_GCC=gcc8
COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin17.5.0/8.2.0/lto-wrapper
Target: x86_64-apple-darwin17.5.0
Configured with: ../gcc-8.2.0/configure --prefix=/opt/local --program-suffix=8
--enable-languages=c,c++,fortran --enable-checking=release --disable-nls
--with-system-zlib
Thread model: posix
gcc version 8.2.0 (GCC)
$
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Subject: [Bug c++/88572] error: braces around scalar initializer - should be a warning
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--- Comment #17 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Feb 20 18:50:32 2019
New Revision: 269045
URL: https://gcc.gnu.org/viewcvs?rev=269045&root=gcc&view=rev
Log:
PR c++/88572 - wrong handling of braces on scalar init.
* decl.c (reshape_init_r): Allow braces around scalar initializer
within aggregate init. Reject double braced-init of scalar
variable.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/g++.dg/cpp0x/initlist69.C
trunk/gcc/testsuite/g++.dg/cpp1z/direct-enum-init1.C
trunk/gcc/testsuite/g++.dg/init/brace1.C
trunk/gcc/testsuite/g++.dg/init/brace2.C
trunk/gcc/testsuite/g++.dg/init/union2.C
trunk/gcc/testsuite/g++.dg/warn/Wbraces2.C
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88380] [7/8/9 Regression] Sequence of not-explicitly initialised, initialised, variable length generates no initialiser
Date: Wed, 20 Feb 2019 18:55:00 -0000
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Feb 20 18:54:45 2019
New Revision: 269046
URL: https://gcc.gnu.org/viewcvs?rev=269046&root=gcc&view=rev
Log:
PR c++/88380 - wrong-code with flexible array and NSDMI.
Here 'skipped' was set to -1 to force an explicit initializer for 'uninit'
before the initializer for 'initialized', and so we also tried to emit an
explicit initializer for the flexible array, for which build_zero_init
returns error_mark_node. We should ignore flexarrays even when
skipped < 0.
* typeck2.c (process_init_constructor_record): Skip flexarrays.
Added:
trunk/gcc/testsuite/g++.dg/ext/flexary33.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck2.c
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Subject: [Bug c++/87513] [8/9 Regression] ICE in write_expression, at cp/mangle.c:3050
Date: Wed, 20 Feb 2019 18:59:00 -0000
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--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Feb 20 18:59:18 2019
New Revision: 269048
URL: https://gcc.gnu.org/viewcvs?rev=269048&root=gcc&view=rev
Log:
PR c++/87513 - 'sorry' mangling PMF template-id.
Here build_offset_ref calls build_qualified_name to make a SCOPE_REF because
the dependent template arguments make type_dependent_expression_p (member)
true. We could probably work hard to prevent this, but it doesn't seem
necessary, and it's easy to fix write_expression to handle the result.
* mangle.c (write_expression): Handle SCOPE_REF to BASELINK.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/decltype-tid1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/mangle.c
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 19:16:00 -0000
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--- Comment #12 from Jonny Grant <jg at jguk dot org> ---
Just to add
C spec says UB.
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf
"The #line preprocessing directive that results after expansion does not match
one of
the two well-defined forms, or its digit sequence specifies zero or a number
greater
than 2147483647 (6.10.4)."
As I understand it, it is #line <the next line will be numbered>
So if it is #line 1, the following line (actual line 2) will be counted as line
1.
#line 0, means that the actual 2nd line in a file is treated as 0.
>From gcc-bugs-return-634401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 19:27:33 2019
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Subject: [Bug d/89418] D test cases fail on powerpc64le
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--- Comment #2 from seurer at gcc dot gnu.org ---
real.mant_dig is 106 on powerpc64le
>From gcc-bugs-return-634402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 19:32:20 2019
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Subject: [Bug d/89418] D test cases fail on powerpc64le
Date: Wed, 20 Feb 2019 19:32:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Funny. real.mant_dig == 106 means 128bit IBM long double (or as some call it,
double-double as the error message suggest).
The error message is incorrect in both cases too:
"Only 64-bit, 80-bit, and 128-bit reals"~
" are supported for LittleEndian CPUs"
Should really be:
"Only IEEE 64-bit, IEEE 80-bit, and IEEE 128-bit reals"~
" are supported for LittleEndian CPUs"
And:
"Only IEEE 64-bit and IEEE 128-bit reals are supported for BigEndian CPUs."~
" double-double reals have partial support"
>From gcc-bugs-return-634403-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 19:57:46 2019
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Subject: [Bug d/89177] unaligned memory access in libphobos
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--- Comment #4 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Johannes Pfau from comment #2)
> Thanks for the bug report & patch. It seems upstream phobos has already
> fixed this in a different way:
>
> https://github.com/dlang/phobos/commit/
> d5f710c57e717ef470d093c1739156dcb2f2d469#diff-
> 2f532fcf37a0e29f7683a930ad9915ae
>
> Could you please try whether simply replacing the murmurhash.d file with
> this latest upstream version works?
> https://raw.githubusercontent.com/dlang/phobos/master/std/digest/murmurhash.d
>
Confirmed, this works for me, no regressions in arm-Linux-gnueabihf.
>From gcc-bugs-return-634404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:07:57 2019
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Subject: [Bug c/89410] [7/8/9 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 20:07:00 -0000
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--- Comment #13 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Wed Feb 20 20:07:20 2019
New Revision: 269050
URL: https://gcc.gnu.org/viewcvs?rev=269050&root=gcc&view=rev
Log:
Fix ICE with #line directive (PR c/89410)
PR c/89410 reports various issues with #line directives with very
large numbers; one of them is an ICE inside diagnostic-show-locus.c
when emitting a diagnostic at line 0xffffffff.
The issue is that the arithmetic in layout::calculate_line_spans to
determine if two line spans are sufficiently close to consolidate
was using the unsigned 32-bit linenum_type, which was overflowing
when comparing the line for the expanded location with those of
the location range (all on line 0xffffffff), leading to it
erroneously adding two spans for the same line, leading to an
assertion failure.
This patch fixes the ICE by generalizing the use of long long in
line-map.h's comparison function for linenum_type into a new
linenum_arith_t typedef, and using it here.
Doing so uncovered a second problem: the loop to print the lines
within the line_span for this case is infinite: looping from
0xfffffff upwards, overflowing to 0, and then never becoming
greater than 0xfffffff. The patch fixes this by using linenum_arith_t
there also.
gcc/ChangeLog:
PR c/89410
* diagnostic-show-locus.c (layout::calculate_line_spans): Use
linenum_arith_t when determining if two adjacent line spans are
close enough to merge.
(diagnostic_show_locus): Use linenum_arith_t when iterating over
lines within each line_span.
gcc/testsuite/ChangeLog:
PR c/89410
* gcc.dg/pr89410-1.c: New test.
* gcc.dg/pr89410-2.c: New test.
libcpp/ChangeLog:
PR c/89410
* include/line-map.h (linenum_arith_t): New typedef.
(compare): Use it.
Added:
trunk/gcc/testsuite/gcc.dg/pr89410-1.c
trunk/gcc/testsuite/gcc.dg/pr89410-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/diagnostic-show-locus.c
trunk/gcc/testsuite/ChangeLog
trunk/libcpp/ChangeLog
trunk/libcpp/include/line-map.h
>From gcc-bugs-return-634405-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:13:18 2019
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Subject: [Bug fortran/86248] [7/8/9 Regression] LEN_TRIM in specification expression causes link failure
Date: Wed, 20 Feb 2019 20:13:00 -0000
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
Some digging shows that the name mangling is done in trans-decl.c,
gfc_sym_mangled_identifier. Strangely, the funny name mangling comes
from the component fn_result_spec being set in resolve.c, flag_fn_result_spec,
but only when darray_fixed is a PARAMETER.
The code in question was added by pault in rev. 243478:
243478 pault if (!s->fn_result_spec
243478 pault && s->attr.flavor == FL_PARAMETER)
243478 pault {
243478 pault /* Function contained in a module.... */
243478 pault if (ns->proc_name && ns->proc_name->attr.flavor ==
FL_MODULE)
243478 pault {
243478 pault gfc_symtree *st;
243478 pault s->fn_result_spec = 1;
Maybe he can shine some light on this.
>From gcc-bugs-return-634406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:13:21 2019
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Wed, 20 Feb 2019 20:13:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|calculate_line_spans, at |calculate_line_spans, at
|diagnostic-show-locus.c:123 |diagnostic-show-locus.c:123
|7 after #line |7 after #line
--- Comment #14 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
r269050 should fix the ICE on trunk; removing the "9" part of the Regression
from the Summary.
>From gcc-bugs-return-634407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:17:56 2019
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Subject: [Bug ipa/86395] add support of -fopt-info-inline in inliner
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Oops, sorry. Marking as resolved.
>From gcc-bugs-return-634408-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:19:42 2019
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Subject: [Bug c++/87513] [8 Regression] ICE in write_expression, at cp/mangle.c:3050
Date: Wed, 20 Feb 2019 20:19:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|write_expression, at |write_expression, at
|cp/mangle.c:3050 |cp/mangle.c:3050
--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-634410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:23:48 2019
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From: "jb at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/80408] Problems with SIGNAL, pthread and print together
Date: Wed, 20 Feb 2019 20:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80408
--- Comment #5 from Janne Blomqvist <jb at gcc dot gnu.org> ---
(In reply to Raphael Monod from comment #4)
> Thank you for your answer. But I don't understand why adding -lpthread
> option change the behavior if I do not use any thread.
In libgfortran, if a thread library is not linked in, thread-related stuff such
as mutexes are stubbed out in order to improve performance. With -lpthread it's
thus more likely that the code deadlocks. Note that there's no guarantee it
works without -lpthread either, it's just an accident.
> Moreover, if I refer
> to this page (
> https://docs.oracle.com/cd/E19455-01/806-5257/gen-26/index.html ) write
> statement seems to be async-signal safe ? Where am I wrong ?
> Finaly, what can I do if I want to print a message in my trap function ?
> Thank you for your interest to my problem.
That link refers to the POSIX write() function, which is a much lower level
interface than the Fortran write statement. POSIX write() is async-signal-safe,
but Fortran write has no such guarantees.
As the things you can do in a signal handler is extremely limited, one way to
handle it is to just set a flag variable, and then in the normal code you
regularly check that flag variable, and print messages or whatever.
Another way is the so-called self-pipe trick, where you create a pipe, and the
signal handler can then write to the pipe. A thread in your program can then
poll on the other end of the pipe. Handling pipes, and the need to use POSIX
write/read rather than Fortran READ/WRITE probably means you'll have to
implement that part of the program in C.
>From gcc-bugs-return-634409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:23:26 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/84889] Ideas on revamping how we format diagnostics
Date: Wed, 20 Feb 2019 20:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84889
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Target Milestone|9.0 |10.0
--- Comment #16 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #14)
> David: Can the bug be marked as resolved?
Much of this is implemented for gcc 9.
I want to keep this open, to revisit it in gcc 10. I think the main pending
items are:
(In reply to David Malcolm from comment #0)
[...]
> * the diagnostic and the followup notes are grouped, so it's easier to pick
> out what messages relate to what
[...]
> IIRC, clang does something where the left-hand column is only non-empty for
> the start of a diagnostic; followup lines (e.g. due to line wrapping) are
> indented by 1 char, so that the "wall of text" is broken up somewhat
[...]
>From gcc-bugs-return-634411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 20:38:51 2019
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From: "kelvin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89424] New: __builtin_vec_ext_v1ti (v, i) results in ICE with variable i (RS6000)
Date: Wed, 20 Feb 2019 20:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89424
Bug ID: 89424
Summary: __builtin_vec_ext_v1ti (v, i) results in ICE with
variable i (RS6000)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kelvin at gcc dot gnu.org
Target Milestone: ---
Target: rs6000
Build: 9.0.1
Created attachment 45781
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45781&action=edit
preprocessed source code for reproducer
The __builtin_vec_ext_v1ti (v, i) function should work with both constant and
variable values of int i.
With current trunk
$GCC_BUILD/GCC/xgcc -B$gcc_build/GCC/ -maltivec -mvsx -O1 -o problem.exe
problem.c
ends with an internal cmopiler error:
during RTL pass: expand
prXXXXX-0.c: In function ‘ei’:
prXXXXX-0.c:25:10: internal compiler error: in rs6000_expand_vector_extract, at
config/rs6000/rs6000.c:6970
25 | return __builtin_vec_ext_v1ti (v, i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x10faeabf rs6000_expand_vector_extract(rtx_def*, rtx_def*, rtx_def*)
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:6970
0x10feeeaf altivec_expand_vec_ext_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:14736
0x10feeeaf altivec_expand_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:14969
0x10ff1def rs6000_expand_builtin
/home/kelvin/gcc-root/gcc-trunk2/gcc/config/rs6000/rs6000.c:16530
0x1034702b expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
/home/kelvin/gcc-root/gcc-trunk2/gcc/builtins.c:7226
0x10557feb expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:11025
0x1056d8f3 store_expr(tree_node*, rtx_def*, int, bool, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:5669
0x10571463 expand_assignment(tree_node*, tree_node*, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:5432
0x10571463 expand_assignment(tree_node*, tree_node*, bool)
/home/kelvin/gcc-root/gcc-trunk2/gcc/expr.c:4978
0x1038082b expand_call_stmt
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:2722
0x1038082b expand_gimple_stmt_1
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:3691
0x1038082b expand_gimple_stmt
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:3850
0x1038959f expand_gimple_basic_block
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:5886
0x1038be27 execute
/home/kelvin/gcc-root/gcc-trunk2/gcc/cfgexpand.c:6509
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Makefile:26: recipe for target 'prXXXXX-0.exe' failed
make: *** [prXXXXX-0.exe] Error 1
kelvin@genoa:~/gcc-root/tests$
>From gcc-bugs-return-634412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 21:17:07 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89336] internal compiler error when compiling a constexpr function
Date: Wed, 20 Feb 2019 21:17:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 21:16:27 2019
New Revision: 269052
URL: https://gcc.gnu.org/viewcvs?rev=269052&root=gcc&view=rev
Log:
PR c++/89336
* constexpr.c (cxx_eval_store_expression): Diagnose changing of active
union member for -std=c++17 and earlier.
* g++.dg/cpp1y/constexpr-89336-3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89336-3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 21:30:56 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/83057] OPEN without a filename and without STATUS='SCRATCH' could produce a warning
Date: Wed, 20 Feb 2019 21:30:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
The following obvious patch to the logic fixes the NEWUNIT issue:
Index: gcc/fortran/io.c
===================================================================
--- gcc/fortran/io.c (revision 269028)
+++ gcc/fortran/io.c (working copy)
@@ -2504,16 +2504,15 @@
goto cleanup;
}
- if (!open->file && open->status)
- {
- if (open->status->expr_type == EXPR_CONSTANT
+ if (!open->file &&
+ (!open->status ||
+ (open->status->expr_type == EXPR_CONSTANT
&& gfc_wide_strncasecmp (open->status->value.character.string,
- "scratch", 7) != 0)
- {
+ "scratch", 7) != 0)))
+ {
gfc_error ("NEWUNIT specifier must have FILE= "
"or STATUS='scratch' at %C");
goto cleanup;
- }
}
}
else if (!open->unit)
I do not think we need to handle the other case,
as many people expect the file fort.20 to be created.
(At least I do.)
>From gcc-bugs-return-634414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 21:41:49 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89425] New: -Wabsolute-value warns in dead code
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Bug ID: 89425
Summary: -Wabsolute-value warns in dead code
Product: gcc
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Trying building glibc with -Wextra with GCC mainline shows up warnings from
-Wabsolute-value illustrated by the following test:
double f (double x) { return sizeof (x) == sizeof (float) ? __builtin_fabsf (x)
: __builtin_fabs (x); }
t.c: In function 'f':
t.c:1:61: warning: absolute value function '__builtin_fabsf' given an argument
of type 'double' but has parameter of type 'float' which may cause truncation
of value [-Wabsolute-value]
1 | double f (double x) { return sizeof (x) == sizeof (float) ?
__builtin_fabsf (x) : __builtin_fabs (x); }
|
^~~~~~~~~~~~~~~
As with a range of other warnings in the C front end, this one should not apply
if c_inhibit_evaluation_warnings, to avoid such useless warnings. (I'm not
sure that will actually be sufficient to be able to use this warning when
building glibc, because _Generic and __builtin_choose_expr don't look like they
set c_inhibit_evaluation_warnings, but it's certainly a desirable improvement
to this warning.)
>From gcc-bugs-return-634415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 21:59:23 2019
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89397
--- Comment #7 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Feb 20 21:58:45 2019
New Revision: 269054
URL: https://gcc.gnu.org/viewcvs?rev=269054&root=gcc&view=rev
Log:
PR target/89397
* config/i386/i386.c (ix86_atomic_assign_expand_fenv): Check
TARGET_SSE in addition to TARGET_SSE_MATH.
(ix86_excess_precision): Ditto.
(ix86_float_exceptions_rounding_supported_p): Ditto.
(use_rsqrt_p): Ditto.
* config/i386/sse.md (rsqrt<mode>2): Ditto.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/sse.md
>From gcc-bugs-return-634416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 22:03:54 2019
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89415] [9 Regression] gcc.dg/sinatan-1.c FAILs
Date: Wed, 20 Feb 2019 22:03:00 -0000
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--- Comment #4 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> See https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01650.html
I've now included the patch in a sparc-sun-solaris2.11 bootstrap and the
sinatan-1.c failures are gone.
Thanks.
Rainer
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Subject: [Bug c/89425] -Wabsolute-value warns in dead code
Date: Wed, 20 Feb 2019 22:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89425
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=68193
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Joseph S. Myers from comment #0)
> (I'm not sure that will actually be sufficient to be able to use this
> warning when building glibc, because _Generic and __builtin_choose_expr
> don't look like they set c_inhibit_evaluation_warnings, but it's certainly a
> desirable improvement to this warning.)
I think the part about _Generic is bug 68193
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Subject: [Bug tree-optimization/86367] FRE1 tree pass deletes code in gcc.target/powerpc/nan128-1.c when long double is IEEE 128
Date: Wed, 20 Feb 2019 22:17:00 -0000
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--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
If you use -fsignaling-nans everything works as expected.
>From gcc-bugs-return-634419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 22:34:37 2019
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Subject: [Bug tree-optimization/86367] FRE1 tree pass deletes code in gcc.target/powerpc/nan128-1.c when long double is IEEE 128
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> ---
So yes what Joseph says in #c7 seems to be what is going on.
>From gcc-bugs-return-634420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 20 22:34:57 2019
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Subject: [Bug target/89426] New: -mfpmath=sse isn't preserved
Date: Wed, 20 Feb 2019 22:34:00 -0000
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Bug ID: 89426
Summary: -mfpmath=sse isn't preserved
Product: gcc
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Target: i386
[hjl@gnu-cfl-1 gcc]$ cat x.i
float
__attribute__((target("arch=haswell")))
foo (float x, float y)
{
return x * y;
}
[hjl@gnu-cfl-1 gcc]$ gcc -S -m32 -march=i686 -mfpmath=sse x.i -O2
cc1: warning: SSE instruction set disabled, using 387 arithmetics
[hjl@gnu-cfl-1 gcc]$ cat x.s
.file "x.i"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
flds 4(%esp)
fmuls 8(%esp)
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
I am expecting SSE FP math in foo.
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Subject: [Bug fortran/83057] OPEN without a filename and without STATUS='SCRATCH' could produce a warning
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
Patch submitted:
https://gcc.gnu.org/ml/fortran/2019-02/msg00176.html
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Subject: [Bug tree-optimization/88074] [7/8 Regression] g++ hangs on math expression
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--- Comment #32 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 22:41:26 2019
New Revision: 269055
URL: https://gcc.gnu.org/viewcvs?rev=269055&root=gcc&view=rev
Log:
PR middle-end/88074
PR middle-end/89415
* toplev.c (do_compile): Double the emin/emax exponents to workaround
buggy mpc_norm.
* gcc.dg/pr88074-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr88074-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/toplev.c
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Subject: [Bug middle-end/89415] [9 Regression] gcc.dg/sinatan-1.c FAILs
Date: Wed, 20 Feb 2019 22:42:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 22:41:26 2019
New Revision: 269055
URL: https://gcc.gnu.org/viewcvs?rev=269055&root=gcc&view=rev
Log:
PR middle-end/88074
PR middle-end/89415
* toplev.c (do_compile): Double the emin/emax exponents to workaround
buggy mpc_norm.
* gcc.dg/pr88074-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr88074-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/toplev.c
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Subject: [Bug middle-end/89415] [9 Regression] gcc.dg/sinatan-1.c FAILs
Date: Wed, 20 Feb 2019 22:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89415
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed now.
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
Date: Wed, 20 Feb 2019 23:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89091
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 23:01:41 2019
New Revision: 269056
URL: https://gcc.gnu.org/viewcvs?rev=269056&root=gcc&view=rev
Log:
PR middle-end/89091
* fold-const.c (decode_field_reference): Return NULL_TREE if
lang_hooks.types.type_for_size returns NULL. Check it before
overwriting *exp_. Use return NULL_TREE instead of return 0.
* gcc.dg/torture/pr89091.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89091.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89412] [7/8 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
Date: Wed, 20 Feb 2019 23:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89412
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] gcc ICE |[7/8 Regression] gcc ICE in
|in simplify_subreg, at |simplify_subreg, at
|simplify-rtx.c:6273 on |simplify-rtx.c:6273 on
|i686-linux-gnu |i686-linux-gnu
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9+ so far.
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9+ so far.
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Subject: [Bug middle-end/89412] [7/8/9 Regression] gcc ICE in simplify_subreg, at simplify-rtx.c:6273 on i686-linux-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89412
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 20 23:02:29 2019
New Revision: 269057
URL: https://gcc.gnu.org/viewcvs?rev=269057&root=gcc&view=rev
Log:
PR middle-end/89412
* expr.c (expand_assignment): If result is a MEM, use change_address
instead of simplify_gen_subreg.
* gcc.c-torture/compile/pr89412.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr89412.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/89409] [9 Regression] FAIL: c-c++-common/ubsan/div-by-zero-[67].c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89409
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89427] New: missing -Warray-bounds on a MEM_REF of array plus offset
Date: Wed, 20 Feb 2019 23:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89427
Bug ID: 89427
Summary: missing -Warray-bounds on a MEM_REF of array plus
offset
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Target Milestone: ---
The out-of-bounds access below is not diagnosed even though it could be. The
vrp_pro::check_mem_ref function gives up too soon. It's passed as an argument
MEM_REF (_2, 0) where _2 = &MEM[(void *)&a + 8B] + _1. It extracts the _2 but
bails when that's not an ADDR_EXPR of either a STRING_CST or VAR_DECL. It
should also look the argument of the inner MEM_REF and consider its size and
offset if it's a VAR_DECL.
$ cat u.c && gcc -O2 -S -Wall -Wextra -Warray-bounds=2 u.c
char a[8];
void f (int i)
{
char *p = a + sizeof a;
if (i < 5)
i = 5;
p[i] = 0; // missing -Warray-bounds
}
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Subject: [Bug tree-optimization/89427] missing -Warray-bounds on a MEM_REF of array plus offset
Date: Wed, 20 Feb 2019 23:25:00 -0000
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The equivalent code using memcpy (or even strcpy) is diagnosed:
$ cat u.c && gcc -O2 -S -Wall u.c
char a[8];
void f (int i)
{
char *p = a + sizeof a;
if (i < 5)
i = 5;
__builtin_memcpy (p + i, "", 1);
}
u.c: In function ‘f’:
u.c:8:3: warning: ‘__builtin_memcpy’ offset [13, 2147483655] is out of the
bounds [0, 8] of object ‘a’ with type ‘char[8]’ [-Warray-bounds]
8 | __builtin_memcpy (p + i, "", 1);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
u.c:1:6: note: ‘a’ declared here
1 | char a[8];
| ^
Likewise for memset (by -Wstringop-overflow=):
$ cat u.c && gcc -O2 -S -Wall u.c
char a[8];
void f (int i)
{
char *p = a + sizeof a;
if (i < 5)
i = 5;
__builtin_memset (p + i, 0, 1);
}
u.c: In function ‘f’:
u.c:8:3: warning: ‘__builtin_memset’ writing 1 byte into a region of size 0
overflows the destination [-Wstringop-overflow=]
8 | __builtin_memset (p + i, 0, 1);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug c++/89405] [8/9 Regression] ICE in import_export_decl, at cp/decl2.c:2959
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89405
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 21 00:08:59 2019
New Revision: 269058
URL: https://gcc.gnu.org/viewcvs?rev=269058&root=gcc&view=rev
Log:
PR c++/89405
* decl.c (maybe_commonize_var): When clearing TREE_PUBLIC and
DECL_COMMON, set DECL_INTERFACE_KNOWN.
* g++.dg/cpp1z/inline-var5.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/inline-var5.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89403] [7/8/9 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
Date: Thu, 21 Feb 2019 00:10:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 21 00:09:47 2019
New Revision: 269059
URL: https://gcc.gnu.org/viewcvs?rev=269059&root=gcc&view=rev
Log:
PR c++/89403
* decl2.c (c_parse_final_cleanups): Move TREE_ASM_WRITTEN setting
for flag_syntax_only from here...
* semantics.c (expand_or_defer_fn_1): ... here.
* g++.dg/cpp0x/pr89403.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr89403.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl2.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88826] ICE (segfault) when compiling invalid C++ code with -std=c++2a
Date: Thu, 21 Feb 2019 00:42:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Thu, 21 Feb 2019 01:00:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-21
Known to work| |8.2.1
Version|unknown |9.0
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Summary|[regression] |[9 regression]
|std::vector<std::thread, |std::vector<std::thread,
|custom_allocator>::push_bac |custom_allocator>::push_bac
|k no longer builds. |k no longer builds.
Ever confirmed|0 |1
Known to fail| |9.0
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Subject: [Bug go/89407] [9 Regression] go bootstrap failure on s390x starting with r268941
Date: Thu, 21 Feb 2019 01:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89407
--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Thu Feb 21 01:06:01 2019
New Revision: 269063
URL: https://gcc.gnu.org/viewcvs?rev=269063&root=gcc&view=rev
Log:
PR go/89407
internal/cpu: use #ifdef __s390x__ in C code
Patch by Jakub Jelinek.
Fixes https://gcc.gnu.org/PR89407
Reviewed-on: https://go-review.googlesource.com/c/163297
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/internal/cpu/cpu_gccgo.c
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Subject: [Bug go/89407] [9 Regression] go bootstrap failure on s390x starting with r268941
Date: Thu, 21 Feb 2019 01:07:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Fixed, I hope.
>From gcc-bugs-return-634438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 01:29:04 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89428] New: missing -Wstringop-overflow on a PHI with variable offset
Date: Thu, 21 Feb 2019 01:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89428
Bug ID: 89428
Summary: missing -Wstringop-overflow on a PHI with variable
offset
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC diagnoses the 1-byte overflow in the call to memset in f() but fails to
diagnose the much bigger overflow in g(). The problem is the PHI that the
compute_objsize() function doesn't handle.
$ cat t.c && gcc -O2 -S -Wall -Wextra -fdump-tree-optimized=/dev/stdout t.c
char a[7];
void f (__SIZE_TYPE__ i)
{
if (i < 1 || 2 < i) i = 1;
__builtin_memset (a + i, 0, 7); // warning (good)
}
void g (__SIZE_TYPE__ i)
{
if (2 < i) i = 0;
__builtin_memset (a + i, 0, 99); // missing warning (bug)
}
;; Function f (f, funcdef_no=0, decl_uid=1907, cgraph_uid=1, symbol_order=1)
Removing basic block 3
f (long unsigned int i)
{
long unsigned int _1;
void * _2;
<bb 2> [local count: 1073741824]:
_1 = i_4(D) + 18446744073709551615;
if (_1 > 1)
goto <bb 3>; [59.00%]
else
goto <bb 4>; [41.00%]
<bb 3> [local count: 633507680]:
<bb 4> [local count: 1073741824]:
# i_3 = PHI <i_4(D)(2), 1(3)>
_2 = &a + i_3;
__builtin_memset (_2, 0, 7); [tail call]
return;
}
t.c: In function ‘f’:
t.c:7:3: warning: ‘__builtin_memset’ writing 7 bytes into a region of size 6
overflows the destination [-Wstringop-overflow=]
7 | __builtin_memset (a + i, 0, 7); // warning (good)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
;; Function g (g, funcdef_no=1, decl_uid=1910, cgraph_uid=2, symbol_order=2)
Removing basic block 5
g (long unsigned int i)
{
char[7] * _6;
char[7] * prephitmp_7;
<bb 2> [local count: 1073741824]:
if (i_3(D) > 2)
goto <bb 4>; [50.00%]
else
goto <bb 3>; [50.00%]
<bb 3> [local count: 536870912]:
_6 = &a + i_3(D);
<bb 4> [local count: 1073741824]:
# prephitmp_7 = PHI <_6(3), &a(2)>
__builtin_memset (prephitmp_7, 0, 99); [tail call]
return;
}
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Subject: [Bug c++/52320] missing destructor call after thrown exception in initializer
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=57510
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Related to PR 57510
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Subject: [Bug c++/52130] missing check for matching underlying type during instantiation of enum member of class template
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The relevant text in the standard is:
"A scoped enumeration shall not be later redeclared as unscoped or with a
different underlying type. An unscoped enumeration shall not be later
redeclared as scoped and each redeclaration shall include an enum-base
specifying the same underlying type as in the original declaration."
A suitable diagnostic would be:
enumeration type redeclared with different underlying type
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Subject: [Bug c++/87921] [7/8/9 Regression] Incorrect error "storage size of [array] isn't known (when it is)
Date: Thu, 21 Feb 2019 02:25:00 -0000
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 21 02:24:40 2019
New Revision: 269064
URL: https://gcc.gnu.org/viewcvs?rev=269064&root=gcc&view=rev
Log:
PR c++/87921 - wrong error with inline static data member.
c_parse_final_cleanups checks DECL_IN_AGGR_P to avoid trying to emit a
static data member that has not been defined. The inline variable patch
changed that to exempt inline variables. But in this case we haven't
instantiated the variable yet, so we really don't have a definition. This
patch changes inline variable handling such that DECL_IN_AGGR_P is not set
for a defined inline variable, so we can remove all the checks of
DECL_INLINE_VAR_P after DECL_IN_AGGR_P.
With that change we were failing on a static data member that had been
instantiated due to a use before we got around to processing it in
instantiate_class_template; we should detect that and avoid all the
finish_static_data_member_decl processing, which assumes that it is the
first time we're seeing the variable.
* decl2.c (finish_static_data_member_decl): Don't set DECL_IN_AGGR_P
for a non-template inline variable. Do nothing for an
already-instantiated variable.
(c_parse_final_cleanups): Check DECL_IN_AGGR_P without
DECL_INLINE_VAR_P.
* decl.c (check_initializer): Likewise.
(make_rtl_for_nonlocal_decl): Likewise.
* pt.c (instantiate_decl): Likewise.
* typeck2.c (store_init_value): Likewise.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/inline-var6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl.c
trunk/gcc/cp/decl2.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/typeck2.c
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Subject: [Bug c++/87921] [7/8 Regression] Incorrect error "storage size of [array] isn't known (when it is)
Date: Thu, 21 Feb 2019 02:55:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] |[7/8 Regression] Incorrect
|Incorrect error "storage |error "storage size of
|size of [array] isn't known |[array] isn't known (when
|(when it is) |it is)
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962
Date: Thu, 21 Feb 2019 03:23:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |ice-on-valid-code
Target|x86_64-pc-linux-gnu |x86_64-pc-linux-gnu,
| |powerpc*-linux
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-02/msg01728.ht
| |ml
--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
As part of some offline discussions, it was determined that the asm usage is
valid and should be handled, so I changed the keywords to ice-on-valid-code.
Patch submitted that fixes the asmcons pass to handle this scenario.
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Thu, 21 Feb 2019 03:26:00 -0000
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--- Comment #11 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #5)
> Created attachment 45760 [details]
> Current set of patches
>
> It turns out there is a lot more than just wrong register_move_cost. This
> patchset does fix the PR without introducing too many regressions, but it is
> a work in progress.
>
> I have some questions about union register classes:
> 1) What should register_move_cost return for a union class like
> GEN_OR_VSX_REGS and some other class? Worst case, best case, or doesn't it
> matter?
> 2) What should preferred_reload_class return for union classes?
> Looking at other ports doesn't shed much light..
IRA uses practically the same algorithm as the old RA. Only instead of
pseudos, pseudo ranges (allocnos) are used.
It is hard to describe the algorithm briefly. It has a few drawbacks.
Roughly speaking it does not take into account that, when we calculate the
costs, different pseudo operands should be on the same insn alternative.
Choosing the classes implicitly affects on a final choice of insn alternative.
For some time I worked on different approach which is based on choosing insn
alternatives first and then calculating the costs. The code for this is
currently on branch ira-select.
As for register move costs inside an union class, for better RA results I
think we should not take costs of moves between different subclasses into
account. So it should be a minimal costs of moves only inside subclasses.
For example, if we have GENERAL_FLOATING_REGS class the cost for moves inside
the class (from GENERAL_FLOATING_REGS to GENERAL_FLOATING_REGS) should be not
cost of move from GENERAL to FLOAT class but minimal cost of move only inside
GENERAL class and only inside FLOAT class. Analogously, for moves between two
different classes (when one or both classes are an union classes), we should
use minimal cost of moves from subclasses of the two classes.
The most common case when the algorithm chooses union classes is one when we
use a pseudo to implement memory-memory move. For example, moving memory
through general or float registers has the same cost. If we use maximal cost
for moves between regs of GENERAL_FLOATING_REGS, the algorithm decreases the
number of registers which can be used for such moves by using only general or
only float regs.
That is how I see the right approach but I never benchmarked different
approaches, for example, on SPEC. So the approach I propose here has not been
checked on practice.
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Subject: [Bug c++/88690] [7/8/9 Regression] c++17 internal compiler error: in output_constructor_regular_field, at varasm.c:5031
Date: Thu, 21 Feb 2019 05:20:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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Subject: [Bug fortran/80408] Problems with SIGNAL, pthread and print together
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--- Comment #6 from Raphael Monod <raphael.monod at wanadoo dot fr> ---
Thank you very much for your explanations. Now I understand why I was wrong. I
will try to change my code to take into account your suggestions.
Once more, thank you very much.
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Subject: [Bug c++/89403] [7/8 Regression] ICE in maybe_clone_body, at cp/optimize.c:693
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|maybe_clone_body, at |maybe_clone_body, at
|cp/optimize.c:693 |cp/optimize.c:693
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug c++/89405] [8 Regression] ICE in import_export_decl, at cp/decl2.c:2959
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89405
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|import_export_decl, at |import_export_decl, at
|cp/decl2.c:2959 |cp/decl2.c:2959
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-634449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 08:03:38 2019
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Subject: [Bug fortran/89363] RANK incorrect for unallocated allocatable
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
This is not part of the ISO_Fortran_binding implementation but is clearly
associated with it.
I can see how to fix it and will get on with it today.
Paul
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Subject: [Bug c++/89392] [7/8/9 Regression] ICE in bitmap_bit_p, at bitmap.c:978
Date: Thu, 21 Feb 2019 08:04:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 21 08:03:40 2019
New Revision: 269065
URL: https://gcc.gnu.org/viewcvs?rev=269065&root=gcc&view=rev
Log:
2019-02-21 Richard Biener <rguenther@suse.de>
PR middle-end/89392
cp/
* vtable-class-hierarchy.c (vtv_generate_init_routine): Do not
make symtab process new functions here.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/vtable-class-hierarchy.c
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Subject: [Bug c++/89429] New: ICE with __func__
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89429
Bug ID: 89429
Summary: ICE with __func__
Product: gcc
Version: 8.2.0
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Created attachment 45782
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45782&action=edit
Example code
g++ (Debian 8.2.0-20) 8.2.0
Compiling the attached code with `g++ testcase.cpp` results in an internal
compiler error:
main.cpp: In instantiation of 'g() [with T = int]::<lambda(auto:1)> [with
auto:1 = int]':
main.cpp:4:13: required from 'void f(Function&&) [with Function = g() [with T
= int]::<lambda(auto:1)>]'
main.cpp:11:6: required from 'void g() [with T = int]'
main.cpp:18:12: required from here
main.cpp:12:9: internal compiler error: in enclosing_instantiation_of, at
cp/pt.c:13321
__func__;
^~~~~~~~
0x7f5b303dc09a __libc_start_main
../csu/libc-start.c:308
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
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Subject: [Bug c++/89429] ICE with __func__
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--- Comment #1 from Valentin <vakevk at gmail dot com> ---
Sorry, this was the wrong attachment.
The proper code is:
template <typename Function>
void f(Function&& function) {
// `0` is not special. Can be any value of any type.
function(0);
}
// No error when this template parameter is removed.
template<typename T>
void g() {
// Must be `auto`.
f([](auto) {
__func__;
});
}
void h() {
// `int` is not special. Can be any type.
g<int>();
}
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Subject: [Bug c++/89429] ICE with __func__
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--- Comment #2 from Valentin <vakevk at gmail dot com> ---
Comment on attachment 45782
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45782
Example code
template <typename Function>
void f(Function&& function) {
// `0` is not special. Can be any value of any type.
function(0);
}
// No error when this template parameter is removed.
template<typename T>
void g() {
// Must be `auto`.
f([](auto) {
__func__;
});
}
void h() {
// `int` is not special. Can be any type.
g<int>();
}
>From gcc-bugs-return-634454-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 08:28:08 2019
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89430] New: A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 08:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89430
Bug ID: 89430
Summary: A missing ifcvt optimization to generate csel
Product: gcc
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For a small case,
unsigned *a;
void test(unsigned k, unsigned b) {
if (b < a[k]) {
a[k] = b;
}
}
"gcc -O3 -S" generates,
adrp x2, a
uxtw x0, w0
ldr x2, [x2, #:lo12:a]
ldr w3, [x2, x0, lsl 2]
cmp w3, w1
bls .L1
str w1, [x2, x0, lsl 2]
Actually we should use csel instruction instead of conditional branch, so
expect to have the followings generated,
adrp x2, a
uxtw x0, w0
ldr x2, [x2, #:lo12:a]
ldr w3, [x2, x0, lsl 2]
cmp w3, w1
csel w1, w1, w3, hi
str w1, [x2, x0, lsl 2]
RTL optimization ifcvt misses this opportunity.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89423] -fvtable-verify does not work properly with -flto
Date: Thu, 21 Feb 2019 08:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |lto
CC| |hubicka at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also doing
> make check-target-libvtv RUNTESTFLAGS="--target_board=unix/-flto"
reveals
FAIL: libvtv.cc/bb_tests.cc -O2 -fvtable-verify=std (internal compiler error)
FAIL: libvtv.cc/bb_tests.cc -O2 -fvtable-verify=std (test for excess errors)
FAIL: libvtv.cc/const_vtable.cc -O2 -fvtable-verify=std (internal compiler
error)
FAIL: libvtv.cc/const_vtable.cc -O2 -fvtable-verify=std (test for excess
errors)
FAIL: libvtv.cc/nested_vcall_test.cc -O2 -fvtable-verify=std (internal compiler
error)
FAIL: libvtv.cc/nested_vcall_test.cc -O2 -fvtable-verify=std (test for excess
errors)
FAIL: libvtv.cc/template-list-iostream.cc -O2 -fvtable-verify=std (internal
compiler error)
FAIL: libvtv.cc/template-list-iostream.cc -O2 -fvtable-verify=std (test for
excess errors)
FAIL: libvtv.cc/thunk_vtable_map_attack.cc -O2 -fvtable-verify=std (internal
compiler error)
FAIL: libvtv.cc/thunk_vtable_map_attack.cc -O2 -fvtable-verify=std (test for
excess errors)
FAIL: libvtv.cc/virtfunc-test.cc -O2 -fvtable-verify=std (internal compiler
error)
FAIL: libvtv.cc/virtfunc-test.cc -O2 -fvtable-verify=std (test for excess
errors)
FAIL: libvtv.cc/bb_tests.cc -O2 -fvtable-verify=preinit (internal compiler
error)
FAIL: libvtv.cc/bb_tests.cc -O2 -fvtable-verify=preinit (test for excess
errors)
FAIL: libvtv.cc/const_vtable.cc -O2 -fvtable-verify=preinit (internal compiler
error)
FAIL: libvtv.cc/const_vtable.cc -O2 -fvtable-verify=preinit (test for excess
errors)
FAIL: libvtv.cc/nested_vcall_test.cc -O2 -fvtable-verify=preinit (internal
compiler error)
FAIL: libvtv.cc/nested_vcall_test.cc -O2 -fvtable-verify=preinit (test for
excess errors)
FAIL: libvtv.cc/template-list-iostream.cc -O2 -fvtable-verify=preinit (internal
compiler error)
FAIL: libvtv.cc/template-list-iostream.cc -O2 -fvtable-verify=preinit (test for
excess errors)
FAIL: libvtv.cc/thunk_vtable_map_attack.cc -O2 -fvtable-verify=preinit
(internal compiler error)
FAIL: libvtv.cc/thunk_vtable_map_attack.cc -O2 -fvtable-verify=preinit (test
for excess errors)
FAIL: libvtv.cc/virtfunc-test.cc -O2 -fvtable-verify=preinit (internal compiler
error)
FAIL: libvtv.cc/virtfunc-test.cc -O2 -fvtable-verify=preinit (test for excess
errors)
Running
/space/rguenther/src/svn/trunk/libvtv/testsuite/libvtv.mempool.cc/mempool.exp
...
Running /space/rguenther/src/svn/trunk/libvtv/testsuite/libvtv.mt.cc/mt.exp ...
=== libvtv Summary ===
# of expected passes 152
# of unexpected failures 24
# of unresolved testcases 12
All ICEs are: internal compiler error: in verify_bb_vtables, at
vtable-verify.c:708
I suspect that since the vtable-verify pass runs pretty late (right before
RTL expansion) it relies on some global data structure that is not
streamed / rebuilt in the late LTO LTRANS phase.
I guess for this and the original bug the issue is that the vtable verify
code is a "second class citizen" and not integated with the symbol table
code. I wonder whether keying everything to the actual vtable object
would work? It would be a bit ugly to marshal the vtable verify stuff
through the generic tree type streaming.
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 08:41:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This transformation is not valid for the C11/C++11 memory model.
>From gcc-bugs-return-634459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 08:45:42 2019
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
related to PR 54935.
I think there are other related recorded bugs too but I can't find them right
now.
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Subject: [Bug fortran/89431] New: CPP integer macros not defined
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Bug ID: 89431
Summary: CPP integer macros not defined
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
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The integer macros specified in the "Preprocessing and conditional compilation"
section of the manual do not exist. The real macros on the other hand do.
On x86_64:
program test
use iso_fortran_env
implicit none
write(*,*) integer_kinds
#ifdef __GFC_INTEGER_1__
write(*,*) "__GFC_INTEGER_1__ defined"
#else
write(*,*) "__GFC_INTEGER_1__ undefined"
#endif
#ifdef __GFC_INTEGER_2__
write(*,*) "__GFC_INTEGER_2__ defined"
#else
write(*,*) "__GFC_INTEGER_2__ undefined"
#endif
#ifdef __GFC_INTEGER_8__
write(*,*) "__GFC_INTEGER_8__ defined"
#else
write(*,*) "__GFC_INTEGER_8__ undefined"
#endif
#ifdef __GFC_INTEGER_16__
write(*,*) "__GFC_INTEGER_16__ defined"
#else
write(*,*) "__GFC_INTEGER_16__ undefined"
#endif
write(*,*) real_kinds
#ifdef __GFC_REAL_10__
write(*,*) "__GFC_REAL_10__ defined"
#else
write(*,*) "__GFC_REAL_10__ undefined"
#endif
#ifdef __GFC_REAL_10__
write(*,*) "__GFC_REAL_16__ defined"
#else
write(*,*) "__GFC_REAL_16__ undefined"
#endif
end program
produces
1 2 4 8 16
__GFC_INTEGER_1__ undefined
__GFC_INTEGER_2__ undefined
__GFC_INTEGER_8__ undefined
__GFC_INTEGER_16__ undefined
4 8 10 16
__GFC_REAL_10__ defined
__GFC_REAL_16__ defined
Also present on 8.2 and 7.4
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Subject: [Bug fortran/89364] Assumed rank object with incorrect values for shape and bounds
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Again this is not C interop but I will take it.
The shape intrinsic is indeed to return -1, according to the cited paragraph.
Paul
>From gcc-bugs-return-634461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 08:59:18 2019
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
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--- Comment #12 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #11)
> Created attachment 45652 [details]
> Tentative patch
>
> Patch proposed in comment #10, added ChangeLog and rationale, bootstrapped
> and reg-tested.
Hi Jakub,
does this patch address your concerns mentioned in comment 6?
In other words, OK to propose at libsanitizer upstream?
Thanks,
- Tom
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
Date: Thu, 21 Feb 2019 09:11:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You can try, but it seems upstream doesn't really care.
>From gcc-bugs-return-634463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:18:39 2019
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Subject: [Bug c++/89429] ICE with __func__
Date: Thu, 21 Feb 2019 09:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Most likely introduced by PR88752 and fixed by PR89241 (at least on the trunk).
As mentioned in PR88752, it has been applied for 3 days on 8 branch and then
reverted there.
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
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--- Comment #14 from Denis Khalikov <dennis.khalikov at gmail dot com> ---
IMHO, this is a really hard to face in real word.
You, probably, have to write your program on assembly and then let "as" to add
section with debuginfo, because "as" can not generate dwarf tag
(DW_TAG_subprogram) which cares about address and name of the function, you
will get the poblem.
As far as I remember, the problem was faced in some "fault injection" project,
because the wrappers around libbactrace functions, were copy-pasted from
sanitizers, and does not really related to sanitizers in any cases.
>From gcc-bugs-return-634465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:26:48 2019
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Subject: [Bug c++/89421] [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Thu, 21 Feb 2019 09:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The ICE is on
1245 tree class_template = CLASSTYPE_TI_TEMPLATE (DECL_CONTEXT
(tmpl));
(gdb) p tmpl
$1 = <template_decl 0x7fffea81f280 operator()>
where DECL_CONTEXT is <record_type 0x7fffea94ca80 __lambda0> on which
CLASSTYPE_TEMPLATE_INFO is NULL.
Note, there is another ICE, debug_tree (tmpl) ICEs on:
#1 0x00000000009aa1d1 in dump_template_decl (pp=0x2f5fde0
<actual_pretty_printer>, t=<template_decl 0x7fffea81f280 operator()>,
flags=128)
at ../../gcc/cp/error.c:1396
1396 gcc_assert (TREE_CODE (TREE_TYPE (t)) ==
TEMPLATE_TEMPLATE_PARM);
because TREE_TYPE (t) is a METHOD_TYPE rather than TEMPLATE_TEMPLATE_PARM.
>From gcc-bugs-return-634466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:31:50 2019
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Subject: [Bug c++/89422] [8/9 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Target Milestone|--- |8.4
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r251433.
>From gcc-bugs-return-634467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:33:58 2019
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 09:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Besides of store data races the issue is that we seem to not know that a[k]
doesn't trap inside cond_store_replacement because we consider loads and stores
separately (as if the memory might be mapped readonly):
We need to be careful with loads
or stores, for instance a load might not trap, while a store would,
so if we see a dominating read access this doesn't mean that a later
write access would not trap. Hence we also need to differentiate the
type of access(es) seen.
??? We currently are very conservative and assume that a load might
trap even if a store doesn't (write-only memory). This probably is
overly conservative. */
Changing the testcase to do
unsigned *a;
void test(unsigned k, unsigned b) {
a[k] = 5;
if (b < a[k]) {
a[k] = b;
}
}
generates
test:
.LFB0:
.cfi_startproc
movl $5, %eax
cmpl $5, %esi
movl %edi, %edi
cmovnb %eax, %esi
movq a(%rip), %rax
movl %esi, (%rax,%rdi,4)
ret
>From gcc-bugs-return-634469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:38:26 2019
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Subject: [Bug c++/89422] [8/9 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:38:16 2019
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Subject: [Bug c++/89422] [8/9 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
Date: Thu, 21 Feb 2019 09:38:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
Program received signal SIGSEGV, Segmentation fault.
0x0000000000e33f81 in field_byte_offset (decl=0x7ffff699d7b8,
ctx=0x7fffffffb5e0, cst_offset=0x7fffffffb4a8)
at /space/rguenther/src/svn/trunk2/gcc/dwarf2out.c:19086
19086 if (TREE_CODE (DECL_FIELD_BIT_OFFSET (decl)) != INTEGER_CST)
(gdb) p decl
$1 = (const_tree) 0x7ffff699d7b8
(gdb) p debug_tree (decl)
<field_decl 0x7ffff699d7b8 b
type <integer_type 0x7ffff68985e8 int asm_written public type_6 SI
size <integer_cst 0x7ffff689c078 constant 32>
unit-size <integer_cst 0x7ffff689c090 constant 4>
align:32 warn_if_not_align:0 symtab:-158767472 alias-set -1
canonical-type 0x7ffff68985e8 precision:32 min <integer_cst 0x7ffff689c030
-2147483648> max <integer_cst 0x7ffff689c048 2147483647>
pointer_to_this <pointer_type 0x7ffff68a19d8>>
decl_3 VOID t.C:4:11
align:1 warn_if_not_align:0 offset_align 1 context <record_type
0x7ffff69d1690 S> chain <type_decl 0x7ffff699d720 S>>
$2 = void
(gdb) p decl->field_decl.bit_offset
$3 = (tree) 0x0
(gdb) p decl->field_decl.offset
$4 = (tree) 0x0
that's not a valid FIELD_DECL. The aggregate is
<record_type 0x7ffff69d1690 S asm_written type_0 type_5 type_6 VOID
size <integer_cst 0x7ffff687aea0 type <integer_type 0x7ffff68980a8
bitsizetype> constant 0>
unit-size <integer_cst 0x7ffff687ae58 type <integer_type 0x7ffff6898000
sizetype> constant 0>
align:8 warn_if_not_align:0 symtab:-158767632 alias-set -1 canonical-type
0x7ffff69d1690
fields <using_decl 0x7ffff699d850 operator= decl_0 VOID t.C:1:23
align:1 warn_if_not_align:0 context <record_type 0x7ffff69d1690 S>
result <record_type 0x7ffff69d1690 S>
chain <field_decl 0x7ffff699d7b8 b type <integer_type 0x7ffff68985e8
int>
decl_3 VOID t.C:4:11
align:1 warn_if_not_align:0 offset_align 1 context <record_type
0x7ffff69d1690 S> chain <type_decl 0x7ffff699d720 S>>> context
<translation_unit_decl 0x7ffff6887168 t.C>
full-name "struct S<<anonymous> >"
n_parents=0 use_template=0 interface-unknown
chain <type_decl 0x7ffff699d688 S>>
and we call debug_hooks->type_decl on the __lambda1 TYPE_DECL.
>From gcc-bugs-return-634470-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:40:05 2019
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Subject: [Bug target/89426] -mfpmath=sse isn't preserved
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reasonable expectation.
>From gcc-bugs-return-634471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:45:00 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84536] [7/8 Regression] ICE with non-type template parameter
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE with |[7/8 Regression] ICE with
|non-type template parameter |non-type template parameter
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
>From gcc-bugs-return-634472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 09:45:58 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 21 Feb 2019 09:45:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On the other side, after going into SSA, the ABNORMAL_DISPATCHER successors
would have PHIs for the SSA_NAMEs and thus ICE like this wouldn't happen, so in
theory we could do something in the cfg pass itself only.
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Subject: [Bug sanitizer/81081] [ASAN] ASAN is not properly calling libbacktrace to symbolize program written on assembler
Date: Thu, 21 Feb 2019 09:53:00 -0000
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--- Comment #15 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #13)
> You can try, but it seems upstream doesn't really care.
Done: https://reviews.llvm.org/D58493
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 10:09:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |kargl at gcc dot gnu.org
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
These macros have been introduced at revision r267464.
Looking at the code I don't see why __GFC_REAL_* are defined, but not
__GFC_INTEGER_*.
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Subject: [Bug c++/89421] [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Thu, 21 Feb 2019 10:11:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |paolo.carlini at oracle dot com
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Ah, yesterday I saw something which seems closely related (I will double check)
but for *valid* code. This:
template<int = [](){ return 1; }()>
class T;
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 10:14:00 -0000
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--- Comment #4 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
> We need to be careful with loads
> or stores, for instance a load might not trap, while a store would,
> so if we see a dominating read access this doesn't mean that a later
> write access would not trap.
Why? For this case, there is a dominating load for the same address. I don't
see why it might trap. Any example?
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 10:19:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jiangning Liu from comment #4)
> > We need to be careful with loads
> > or stores, for instance a load might not trap, while a store would,
> > so if we see a dominating read access this doesn't mean that a later
> > write access would not trap.
>
> Why? For this case, there is a dominating load for the same address. I don't
> see why it might trap. Any example?
The memory might be mapped readonly.
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Subject: [Bug d/89432] New: FAIL: libphobos.unittests/druntime/{static,shared}/core.time on CentOS 5.11, Linux 2.6.18
Date: Thu, 21 Feb 2019 10:25:00 -0000
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Bug ID: 89432
Summary: FAIL:
libphobos.unittests/druntime/{static,shared}/core.time
on CentOS 5.11, Linux 2.6.18
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
Reporter: ubizjak at gmail dot com
Target Milestone: ---
libphobos testing on x86_64 CentOS 5.11 fails a testcase:
FAIL: libphobos.unittests/druntime/static/core.time
FAIL: libphobos.unittests/druntime/shared/core.time
with:
Aborting from ../../../../git/gcc/libphobos/libdruntime/core/time.d(2075)
MonoTimeImpl!(ClockType.bootTime) failed to get the frequency of the system's
monotonic clock.
clock_gettime on CentOS 5.11 (Linux 2.6.18) supports only:
clock_gettime returns the current timespec value of tp for the
specific clock, which_clock. The values that clockid_t currently supports for
POSIX.1b timers, as defined in include/linux/time.h, are:
CLOCK_REALTIME
Systemwide realtime clock.
CLOCK_MONOTONIC
Represents monotonic time. Cannot be set.
CLOCK_PROCESS_CPUTIME_ID
High resolution per-process timer.
CLOCK_THREAD_CPUTIME_ID
Thread-specific timer.
CLOCK_REALTIME_HR
High resolution version of CLOCK_REALTIME.
CLOCK_MONOTONIC_HR
High resolution version of CLOCK_MONOTONIC.
There is the following code in time.d:
static bool clockSupported(ClockType c)
{
version (Linux_Pre_2639) // skip CLOCK_BOOTTIME on older linux kernels
return c != ClockType.second && c != ClockType.bootTime;
else
return c != ClockType.second; // second doesn't work with
MonoTimeImpl
but it looks that Linux_Pre_2639 is not handled correctly. Depending on which
kernel is considered the oldest supported kernel, version should also check for
2.6.28, 2.6.32 and 2.6.12:
CLOCK_REALTIME
System-wide clock that measures real (i.e., wall-clock) time.
Setting this clock requires appropriate privileges. This clock is
affected by discontinuous jumps in the system time (e.g., if the system
administrator manually changes the clock), and by the incremental adjustments
performed by adjtime(3) and NTP.
CLOCK_REALTIME_COARSE (since Linux 2.6.32; Linux-specific)
A faster but less precise version of CLOCK_REALTIME. Use when
you need very fast, but not fine-grained timestamps. Requires
per-architecture support, and probably also architecture support for this flag
in the vdso(7).
CLOCK_MONOTONIC
Clock that cannot be set and represents monotonic time since some
unspecified starting point. This clock is not affected by discontinuous jumps
in the system time (e.g., if the system administrator manually changes the
clock), but is affected by the incremental adjustments performed by
adjtime(3) and NTP.
CLOCK_MONOTONIC_COARSE (since Linux 2.6.32; Linux-specific)
A faster but less precise version of CLOCK_MONOTONIC. Use
when you need very fast, but not fine-grained timestamps. Requires
per-architecture support, and probably also architecture support for this flag
in the vdso(7).
CLOCK_MONOTONIC_RAW (since Linux 2.6.28; Linux-specific)
Similar to CLOCK_MONOTONIC, but provides access to a raw
hardware-based time that is not subject to NTP adjustments or the incremental
adjustments performed by adjtime(3).
CLOCK_BOOTTIME (since Linux 2.6.39; Linux-specific)
Identical to CLOCK_MONOTONIC, except it also includes any time
that the system is suspended. This allows applications to get a suspend-aware
monotonic clock without having to deal with the complications of
CLOCK_REALTIME, which may have discontinuities if the time is changed using
settimeofday(2) or similar.
CLOCK_PROCESS_CPUTIME_ID (since Linux 2.6.12)
Per-process CPU-time clock (measures CPU time consumed by all
threads in the process).
CLOCK_THREAD_CPUTIME_ID (since Linux 2.6.12)
Thread-specific CPU-time clock.
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 10:38:00 -0000
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--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to Dominique d'Humieres from comment #1)
> These macros have been introduced at revision r267464.
>
> Looking at the code I don't see why __GFC_REAL_* are defined, but not
> __GFC_INTEGER_*.
Looking at the code I note that __GFC_INT_*__ is used not __GFC_INTEGER_*__, I
changed the test program to use __GFC_INT_1__ instead of __GFC_INTEGER_1__ and
it too is undefined.
>From gcc-bugs-return-634480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 10:44:30 2019
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 10:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89431
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
program test
use iso_fortran_env
implicit none
write(*,*) integer_kinds
#ifdef __GFC_INT_1__
write(*,*) "__GFC_INT_1__ defined"
#else
write(*,*) "__GFC_INT_1__ undefined"
#endif
#ifdef __GFC_INT_2__
write(*,*) "__GFC_INT_2__ defined"
#else
write(*,*) "__GFC_INT_2__ undefined"
#endif
#ifdef __GFC_INT_8__
write(*,*) "__GFC_INT_8__ defined"
#else
write(*,*) "__GFC_INT_8__ undefined"
#endif
#ifdef __GFC_INT_16__
write(*,*) "__GFC_INT_16__ defined"
#else
write(*,*) "__GFC_INT_16__ undefined"
#endif
write(*,*) real_kinds
#ifdef __GFC_REAL_10__
write(*,*) "__GFC_REAL_10__ defined"
#else
write(*,*) "__GFC_REAL_10__ undefined"
#endif
#ifdef __GFC_REAL_10__
write(*,*) "__GFC_REAL_16__ defined"
#else
write(*,*) "__GFC_REAL_16__ undefined"
#endif
end program
gives
1 2 4 8 16
__GFC_INT_1__ defined
__GFC_INT_2__ defined
__GFC_INT_8__ defined
__GFC_INT_16__ defined
4 8 10 16
__GFC_REAL_10__ defined
__GFC_REAL_16__ defined
So either the doc has to be adjusted to gcc/fortran/cpp.c or gcc/fortran/cpp.c
has to be adjusted to the doc.
>From gcc-bugs-return-634481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 10:49:26 2019
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 21 Feb 2019 10:49:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45783
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45783&action=edit
gcc9-pr89280.patch
Untested fix.
>From gcc-bugs-return-634482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 10:52:20 2019
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 10:52:00 -0000
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--- Comment #4 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to Dominique d'Humieres from comment #3)
> program test
> use iso_fortran_env
> implicit none
> write(*,*) integer_kinds
> #ifdef __GFC_INT_1__
> write(*,*) "__GFC_INT_1__ defined"
> #else
> write(*,*) "__GFC_INT_1__ undefined"
> #endif
> #ifdef __GFC_INT_2__
> write(*,*) "__GFC_INT_2__ defined"
> #else
> write(*,*) "__GFC_INT_2__ undefined"
> #endif
> #ifdef __GFC_INT_8__
> write(*,*) "__GFC_INT_8__ defined"
> #else
> write(*,*) "__GFC_INT_8__ undefined"
> #endif
> #ifdef __GFC_INT_16__
> write(*,*) "__GFC_INT_16__ defined"
> #else
> write(*,*) "__GFC_INT_16__ undefined"
> #endif
> write(*,*) real_kinds
> #ifdef __GFC_REAL_10__
> write(*,*) "__GFC_REAL_10__ defined"
> #else
> write(*,*) "__GFC_REAL_10__ undefined"
> #endif
> #ifdef __GFC_REAL_10__
> write(*,*) "__GFC_REAL_16__ defined"
> #else
> write(*,*) "__GFC_REAL_16__ undefined"
> #endif
> end program
>
> gives
>
> 1 2 4 8 16
> __GFC_INT_1__ defined
> __GFC_INT_2__ defined
> __GFC_INT_8__ defined
> __GFC_INT_16__ defined
> 4 8 10 16
> __GFC_REAL_10__ defined
> __GFC_REAL_16__ defined
>
> So either the doc has to be adjusted to gcc/fortran/cpp.c or
> gcc/fortran/cpp.c has to be adjusted to the doc.
Since Fortran uses the name integer for its type rather than int I suggest that
the code should be changed.
>From gcc-bugs-return-634483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 10:55:19 2019
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Thu, 21 Feb 2019 10:55:00 -0000
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--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
While playing with the patch I noticed that there's a significant different in
between GCC 7 and GCC8:
$ cat global4.c
int f;
int main()
{
return *(&f+1);
}
$ g++-7 -fsanitize=address global4.c -fno-common && ./a.out
=================================================================
==12692==ERROR: AddressSanitizer: global-buffer-overflow on address
0x0000004040e4 at pc 0x000000401193 bp 0x7fffffffdc00 sp 0x7fffffffdbf8
READ of size 4 at 0x0000004040e4 thread T0
#0 0x401192 in main (/home/marxin/Programming/testcases/a.out+0x401192)
#1 0x7ffff6cedb7a in __libc_start_main (/lib64/libc.so.6+0x23b7a)
#2 0x4010a9 in _start (/home/marxin/Programming/testcases/a.out+0x4010a9)
0x0000004040e4 is located 0 bytes to the right of global variable 'f' defined
in 'global4.c:1:5' (0x4040e0) of size 4
SUMMARY: AddressSanitizer: global-buffer-overflow
(/home/marxin/Programming/testcases/a.out+0x401192) in main
Shadow bytes around the buggy address:
0x0000800787c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x000080078810: 00 00 00 00 00 00 00 00 00 00 00 00[04]f9 f9 f9
0x000080078820: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078830: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078840: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078860: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Here there's really no left global red zone.
However:
g++-8 -fsanitize=address global4.c -fno-common && ./a.out
=================================================================
==12713==ERROR: AddressSanitizer: global-buffer-overflow on address
0x0000004040e4 at pc 0x00000040118e bp 0x7fffffffdc00 sp 0x7fffffffdbf8
READ of size 4 at 0x0000004040e4 thread T0
#0 0x40118d in main (/home/marxin/Programming/testcases/a.out+0x40118d)
#1 0x7ffff7076b7a in __libc_start_main ../csu/libc-start.c:308
#2 0x4010a9 in _start (/home/marxin/Programming/testcases/a.out+0x4010a9)
0x0000004040e4 is located 0 bytes to the right of global variable 'f' defined
in 'global4.c:1:5' (0x4040e0) of size 4
SUMMARY: AddressSanitizer: global-buffer-overflow
(/home/marxin/Programming/testcases/a.out+0x40118d) in main
Shadow bytes around the buggy address:
0x0000800787c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800787f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x000080078810: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00[04]f9 f9 f9
0x000080078820: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078830: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078840: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078860: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
There's a left 'f9', but the variable has 4 x '00' which is wrong. That's
probably due to some alignment. But fixing that would fix the underlying
problem of this PR.
There's no assembly changes .s file in between GCC 7 and GCC 8. So a
libsanitizer difference.
However, clang-7 does following:
$ clang -fsanitize=address global4.c -fno-common && ./a.out
=================================================================
==12765==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000dd0844 at pc 0x0000004f41ac bp 0x7fffffffdbf0 sp 0x7fffffffdbe8
READ of size 4 at 0x000000dd0844 thread T0
#0 0x4f41ab in main (/home/marxin/Programming/testcases/a.out+0x4f41ab)
#1 0x7ffff7c52b7a in __libc_start_main
/usr/src/debug/glibc-2.29-1.3.x86_64/csu/../csu/libc-start.c:308:16
#2 0x41d2d9 in _start
/home/abuild/rpmbuild/BUILD/glibc-2.29/csu/../sysdeps/x86_64/start.S:120
0x000000dd0844 is located 0 bytes to the right of global variable 'f' defined
in 'global4.c:1:5' (0xdd0840) of size 4
SUMMARY: AddressSanitizer: global-buffer-overflow
(/home/marxin/Programming/testcases/a.out+0x4f41ab) in main
Shadow bytes around the buggy address:
0x0000801b20b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b20c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b20d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b20e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b20f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0000801b2100: 00 00 00 00 00 00 00 00[04]f9 f9 f9 f9 f9 f9 f9
0x0000801b2110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b2120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b2130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b2140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000801b2150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>From gcc-bugs-return-634484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 10:56:41 2019
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Thu, 21 Feb 2019 10:56:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems to work fine even if the dead returns_twice call is found later, e.g. on
int a;
void foo (void);
__attribute__ ((returns_twice)) int bar (void);
void baz (int, int);
static inline void
inl (int x)
{
while (x)
foo ();
}
void
qux (void)
{
inl (1);
baz (bar (), a);
}
it simplifies the GIMPLE IL in einline (and further in ethread), in the end
generates in this case the same assembly, because we don't have those edges in
RTL and so RTL optimizations cure it. But the abnormal SSA_NAMEs etc. could
get in the way of quite a few optimizations.
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
Not true for:
$ cat global5.c
const char c1[] = "a";
int main()
{
return *(&c1[0]+3);
}
$ gcc-8 -fsanitize=address global5.c -fno-common && ./a.out
=================================================================
==13012==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000402023 at pc 0x00000040118f bp 0x7fffffffdc00 sp 0x7fffffffdbf8
READ of size 1 at 0x000000402023 thread T0
#0 0x40118e in main (/home/marxin/Programming/testcases/a.out+0x40118e)
#1 0x7ffff73b4b7a in __libc_start_main ../csu/libc-start.c:308
#2 0x4010a9 in _start (/home/marxin/Programming/testcases/a.out+0x4010a9)
0x000000402023 is located 1 bytes to the right of global variable 'c1' defined
in 'global5.c:1:12' (0x402020) of size 2
'c1' is ascii string 'a'
SUMMARY: AddressSanitizer: global-buffer-overflow
(/home/marxin/Programming/testcases/a.out+0x40118e) in main
Shadow bytes around the buggy address:
0x0000800783b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800783c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800783d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800783e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800783f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x000080078400: 00 00 00 00[02]f9 f9 f9 f9 f9 f9 f9 00 00 00 00
0x000080078410: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078420: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078430: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080078450: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Thus the dummies will be really needed.
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Thu, 21 Feb 2019 10:59:00 -0000
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--- Comment #6 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
(In reply to Richard Biener from comment #5)
> (In reply to Jiangning Liu from comment #4)
> > > We need to be careful with loads
> > > or stores, for instance a load might not trap, while a store would,
> > > so if we see a dominating read access this doesn't mean that a later
> > > write access would not trap.
> >
> > Why? For this case, there is a dominating load for the same address. I don't
> > see why it might trap. Any example?
>
> The memory might be mapped readonly.
But in such a simple basic block, how can it be mapped readonly? We can easily
know it is NOT to do readonly mapping.
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Subject: [Bug hsa/89302] libgomp.c-c++-common/for-11.c fails when offloaded to HSA
Date: Thu, 21 Feb 2019 11:01:00 -0000
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--- Comment #1 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Thu Feb 21 11:00:47 2019
New Revision: 269066
URL: https://gcc.gnu.org/viewcvs?rev=269066&root=gcc&view=rev
Log:
[omp] Move NE_EXPR handling to omp_adjust_for_condition
2019-02-21 Martin Jambor <mjambor@suse.cz>
PR hsa/89302
* omp-general.c (omp_extract_for_data): Removed a duplicate call
to omp_adjust_for_condition, moved NE_EXPR code_cond processing...
(omp_adjust_for_condition): ...here. Added necessary parameters.
* omp-general.h (omp_adjust_for_condition): Updated declaration.
* omp-grid.c (grid_attempt_target_gridification): Adjust to pass
proper values to new parameters of omp_adjust_for_condition.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-general.c
trunk/gcc/omp-general.h
trunk/gcc/omp-grid.c
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Subject: [Bug d/89432] FAIL: libphobos.unittests/druntime/{static,shared}/core.time on CentOS 5.11, Linux 2.6.18
Date: Thu, 21 Feb 2019 11:03:00 -0000
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--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Uroš Bizjak from comment #0)
> libphobos testing on x86_64 CentOS 5.11 fails a testcase:
>
>
> There is the following code in time.d:
>
> static bool clockSupported(ClockType c)
> {
> version (Linux_Pre_2639) // skip CLOCK_BOOTTIME on older linux
> kernels
> return c != ClockType.second && c != ClockType.bootTime;
> else
> return c != ClockType.second; // second doesn't work with
> MonoTimeImpl
>
> but it looks that Linux_Pre_2639 is not handled correctly. Depending on
> which kernel is considered the oldest supported kernel, version should also
> check for 2.6.28, 2.6.32 and 2.6.12:
>
Linux_Pre_2639 is not an implicit version, and requires explicit detection and
adding '-fversion=Linux_Pre_2639' to GDCFLAGSX in the configure/testsuite
scripts.
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Subject: [Bug d/89432] FAIL: libphobos.unittests/druntime/{static,shared}/core.time on CentOS 5.11, Linux 2.6.18
Date: Thu, 21 Feb 2019 11:07:00 -0000
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--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Mostly likely check will be adding an HAVE_CLOCK_BOOTIME test.
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
Date: Thu, 21 Feb 2019 11:08:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
I agree with the analysis of the standard and will add the corrected testcase
to the testsuite.
Many thanks for sorting this out.
Paul
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Subject: [Bug c/89433] New: Repeated use of the OpenACC 'routine' directive
Date: Thu, 21 Feb 2019 11:09:00 -0000
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Bug ID: 89433
Summary: Repeated use of the OpenACC 'routine' directive
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: openacc
Severity: normal
Priority: P3
Component: c
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Depends on: 72741
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We found that it's not correct that we currently unconditionally diagnose an
error for repeated use of the OpenACC 'routine' directive on one
function/declaration. (For reference, it is also permissible for an "ordinary"
function to have several declarations plus a definition, as long as these are
compatible.) This is, the following shall be valid:
#pragma acc routine worker
void f(void)
{
}
#pragma acc routine (f) worker
#pragma acc routine worker
extern void f(void);
Within one translation unit, we just remove the existing diagnostic, and
declare it user error if any two usages are not compatible, but in that case we
try to be helpful, and produce a compile-time diagnostic. For incompatible use
spanning over multiple translation units, it will be more difficult to produce
meaningful diagnostics/semantics.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
[Bug 72741] Fortran OpenACC routine directive doesn't properly handle clauses
specifying the level of parallelism
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Subject: [Bug fortran/89365] Inquiry functions for assumed rank objects fail
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I agree with the analysis of the standard and will add the corrected testcase
> to the testsuite.
Hi Paul,
Can you please extend the analysis to pr67894?
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Subject: [Bug rtl-optimization/89434] New: [8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89434
Bug ID: 89434
Summary: [8/9 Regression] wrong code with -Og and
__builtin_mul_overflow()
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 45784
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45784&action=edit
reduced testcase
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -Og testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190219 (experimental) (GCC)
>From gcc-bugs-return-634494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 11:33:00 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/87880] [9 regression] All macOS asan execution tests FAIL
Date: Thu, 21 Feb 2019 11:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87880
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess on Linux nothing ever calls __cxa_rethrow_primary_exception, so it
isn't a big deal that libasan provides a wrapper for it.
If you want to introduce ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION, it would need
to be introduced some way that either it would default to 1 and
gcc/libsanitizer/asan/Makefile.in was able to override it, so e.g.
#ifndef ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION
# define ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION 1
#endif
in say asan/asan_internal.h and add -DASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION=0
to libsanitizer/asan/Makefile.*.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89435] New: wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
Date: Thu, 21 Feb 2019 11:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89435
Bug ID: 89435
Summary: wrong code with -O1 -march=armv4
-fno-forward-propagate with __builtin_sub_overflow()
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 45785
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45785&action=edit
reduced testcase
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -O1 -march=armv4 -fno-forward-propagate
testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269006-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190219 (experimental) (GCC)
The value is 0xffffffff instead of 0xff. It seems to come from this
instruction:
main:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
push {r4, r5, r6, lr} @
@ testcase.c:12: d = __builtin_bswap64 (a);
mov r1, #0 @ tmp173,
@ testcase.c:12: d = __builtin_bswap64 (a);
ldr r3, .L9 @ tmp140,
str r1, [r3] @ tmp173, d
@ testcase.c:13: b = __builtin_sub_overflow ((u8) - e, (u32) d, &g);
mvn r2, #0 @ _19,
and r1, r1, #1 @ tmp147, _19,
g is in r2, == 0xffffffff
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
Date: Thu, 21 Feb 2019 11:50:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Header-less version of the testcase:
typedef __SIZE_TYPE__ size_t;
__attribute__((always_inline)) static inline void
copy (int *restrict a, int *restrict b)
{
*b = *a;
*a = 7;
}
__attribute__((noinline)) void
floppy (int *mat, size_t *idxs)
{
for (int i = 0; i < 3; i++)
copy (&mat[i%2], &mat[idxs[i]]);
}
int
main ()
{
int mat[2] = {10, 20};
size_t idxs[3] = {1, 0, 1};
floppy (mat, idxs);
if (mat[0] != 7 || mat[1] != 10)
__builtin_abort ();
return 0;
}
Richi, any progress on this? How should the loop unrolling determine when to
use different base/clique and when to use the same? I mean, isn't it different
if each loop body invokes another inlined call with restrict args vs. when the
loop is within the same original function?
>From gcc-bugs-return-634497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 11:52:25 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Thu, 21 Feb 2019 11:52:00 -0000
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--- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ramana, any progress on this?
>From gcc-bugs-return-634498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:05:06 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Thu, 21 Feb 2019 12:05:00 -0000
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--- Comment #46 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 21 12:04:26 2019
New Revision: 269067
URL: https://gcc.gnu.org/viewcvs?rev=269067&root=gcc&view=rev
Log:
PR bootstrap/88714
* constraints.md (q): Remove.
* config/arm/ldrdstrd.md (*arm_ldrd, *arm_strd): Use rk constraint
instead of q.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/constraints.md
trunk/gcc/config/arm/ldrdstrd.md
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 21 Feb 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87609
>
> --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Header-less version of the testcase:
> typedef __SIZE_TYPE__ size_t;
>
> __attribute__((always_inline)) static inline void
> copy (int *restrict a, int *restrict b)
> {
> *b = *a;
> *a = 7;
> }
>
> __attribute__((noinline)) void
> floppy (int *mat, size_t *idxs)
> {
> for (int i = 0; i < 3; i++)
> copy (&mat[i%2], &mat[idxs[i]]);
> }
>
> int
> main ()
> {
> int mat[2] = {10, 20};
> size_t idxs[3] = {1, 0, 1};
> floppy (mat, idxs);
> if (mat[0] != 7 || mat[1] != 10)
> __builtin_abort ();
> return 0;
> }
>
> Richi, any progress on this? How should the loop unrolling determine when to
> use different base/clique and when to use the same? I mean, isn't it different
> if each loop body invokes another inlined call with restrict args vs. when the
> loop is within the same original function?
I've posted the patch as RFC back in October but got no response
(and forgot about it).
In general you always have to use different base/clique unless you
are copying stmts whose access address do not vary with the iteration.
Of course that's only required if the programmer didn't tell you
that there's no aliasing - which makes the issue only appear when
inlining happens. A similar case would be the user writing
for (...)
{
int * restrict x = &p[i];
int * restruct y = &p[i+1];
*x = *y;
}
but we do not support this "local" generation of restrict qualified
pointers (so you have to jump through inlines to get the same effect).
So eventually we could have a flag in struct function whether
the function had a function with restrict tags inlined into it
and only then perform this copying... or somehow remember all
"inlined cliques" and only ever remap those (we could divide
the namespace for this - PTA only ever uses a single clique
which we could hard-code to 1, but then PTA runs multiple times
so it might get a little more complicated).
Unfortunately I have no benchmarks or real-world code using
restrict so I cannot really assess the impact of the
boiler-plate remapping in copy_bbs.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89434] [8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Thu, 21 Feb 2019 12:15:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.3
>From gcc-bugs-return-634501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:20:21 2019
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Subject: [Bug hsa/89302] libgomp.c-c++-common/for-11.c fails when offloaded to HSA
Date: Thu, 21 Feb 2019 12:20:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-634502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:23:04 2019
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
Date: Thu, 21 Feb 2019 12:23:00 -0000
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--- Comment #6 from bin cheng <amker at gcc dot gnu.org> ---
Hmm, I missed your patch as well as this bug. Will try to study this, just not
sure how much I can recap after long time.
>From gcc-bugs-return-634503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:27:50 2019
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/87824] x86_64-linux multilib issues
Date: Thu, 21 Feb 2019 12:27:00 -0000
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--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Rainer Orth from comment #17)
> (In reply to Iain Buclaw from comment #6)
> [...]
> > > Running target unix
> > > FAIL: runnable/cppa.d execution test
> > > FAIL: runnable/cppa.d -g execution test
> > > FAIL: runnable/cppa.d -g -shared-libphobos execution test
> > > FAIL: runnable/cppa.d -shared-libphobos execution test
> >
> > Have now reproduced, the test checks old behaviour that I dropped support
> > for long ago. The first failed attempt to have a type that maps to C 'long'
> > and 'unsigned long' had a 'struct __c_long' type that expected the compiler
> > to magically pass it around as the correct integer type. This had
> > passed/gone unnoticed on x86_64 because 'struct{long}' and 'long' are passed
> > in the same way.
> >
> > Support should have been removed from the dmd front-end when it was dropped
> > from the library, but it still lives on in the testsuite.
>
> I'm seeing the same not only on Linux/x86_64, but also on Solaris/x86, only
> for the non-default multilib.
>
> The failure is the same however:
>
> In file included from runnable/extra-files/cppb.cpp:36:^M
> /vol/gcc/src/hg/trunk/dist/gcc/testsuite/../../libstdc++-v3/libsupc++/
> exception:37:10: fatal error: bits/c++config.h: No such file or directory^M
I'd like to propose an alternative patch. The testsuite harness should simply
ask libstdc++ for correct include paths, like in the to be attached patch.
(This is how libstdc++ testsuite determines correct include flags.)
>From gcc-bugs-return-634504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:30:49 2019
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--- Comment #21 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 45786
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45786&action=edit
Patch for libstdc++ multilib include issue
>From gcc-bugs-return-634505-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 12:51:46 2019
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Subject: [Bug target/70341] [7/8/9 Regression] cost model for addresses is incorrect, slsr is using reg + reg + CST for arm
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With additional default: __builtin_unreachable (); this gets somewhat optimized
into:
add r0, r0, r1
cmp r3, #3
ldrls pc, [pc, r3, asl #2]
b .L3
.L4:
.word .L7
.word .L6
.word .L5
.word .L3
.L5:
ldr r0, [r0, #8]
b handle_case_3
.L6:
ldr r0, [r0, #8]
b handle_case_2
.L7:
ldr r0, [r0, #8]
b handle_case_1
.L3:
ldr r0, [r0, #8]
b handle_case_4
so add r0, r0, r1 is hoisted by the jump2 pass, but strangely it doesn't happen
for the ldr r0, [r0, #8] instruction.
On x86_64-linux with -O2, we also get:
movl 8(%rsi), %edi
jmp handle_case_2
...
movl 8(%rsi), %edi
jmp handle_case_4
etc. without the default: and the jump2 pass hoists those movl 8(%rsi), %edi
instructions before the switch.
Guess the reason why jump2 doesn't hoist anything without default:
__builtin_unreachable (); is that the instruction(s) are not common to all the
paths, so it would be a speculative execution, which still is a win for -Os.
Though, on x86_64 for -Os and 5 such cases instead of 4 (for 4 there is no
switch, but a series of conditional branches) the RA actually does hoist it.
>From gcc-bugs-return-634506-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 13:05:27 2019
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2018-09/msg01436.html
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45787
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45787&action=edit
first part of a fix
This makes PTA always populate (and overwrite) CLIQUE == 1, partitioning
cliques
into "function local" ones (just CLIQUE == 1) and ones introduced to the
function via inlining (CLIQUE > 1) - those have narrower scope than the
function and thus
we may have to remap them whenever we copy a stmt.
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--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Feb 21 13:41:53 2019
New Revision: 269068
URL: https://gcc.gnu.org/viewcvs?rev=269068&root=gcc&view=rev
Log:
i386: Check -mindirect-branch/-mfunction-return with -fcf-protection
Issue an error when -mindirect-branch or -mfunction-return are used
with incompatible -fcf-protection.
gcc/
PR target/87412
* config/i386/i386.c (ix86_set_indirect_branch_type): Issue an
error for -mindirect-branch/-mfunction-return with incompatible
-fcf-protection.
gcc/testsuite/
PR target/87412
* gcc.target/i386/pr87412-1.c: New file.
* gcc.target/i386/pr87412-2.c: Likewise.
* gcc.target/i386/pr87412-3.c: Likewise.
* gcc.target/i386/pr87412-4.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr87412-1.c
trunk/gcc/testsuite/gcc.target/i386/pr87412-2.c
trunk/gcc/testsuite/gcc.target/i386/pr87412-3.c
trunk/gcc/testsuite/gcc.target/i386/pr87412-4.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634509-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 13:43:14 2019
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Subject: [Bug target/87412] -fcf-protection and -mindirect-branch=thunk are incompatible on x86_64
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 9.
>From gcc-bugs-return-634510-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 13:47:09 2019
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
Date: Thu, 21 Feb 2019 13:47:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45788
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45788&action=edit
second part
This is the second part (was already posted for review in October), I've
removed
the extra checking (which fires...) and added an assert.
First one is separately in testing plus both ones together.
Note that with all the copying overflowing of clique just became more likely
so I'll eventually abstract away the ++fun->last_clique and overflow to
zero (no dependence info). But of course 32000 cliques should be enough
forever!
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Thu, 21 Feb 2019 14:25:00 -0000
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--- Comment #20 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
This seems to make sense. One should clone extern inline only if something
useful can be propagated across I suppose. Patch is OK with some comment and
testcase.
>From gcc-bugs-return-634512-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 14:41:40 2019
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Subject: [Bug target/70341] [7/8/9 Regression] cost model for addresses is incorrect, slsr is using reg + reg + CST for arm
Date: Thu, 21 Feb 2019 14:41:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45789
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45789&action=edit
gcc9-pr70341.patch
Untested fix for e.g.:
#define A(N) void foo##N (int);
#define B(N) A(N##0) A(N##1) A(N##2) A(N##3)
#define C(N) B(N##0) B(N##1) B(N##2) B(N##3)
#define D C(1) C(2)
D
struct E { int a, b, c, d; };
struct F { struct E e[1]; };
void
test (struct F *x, int y)
{
struct E *p = &x->e[y];
#undef A
#define A(N) case N: foo##N (p->c); break;
switch (p->b)
{
D
default: __builtin_unreachable ();
}
}
at -O2 on both arm and aarch64 - by making sure the casesi MEM load is mem/u/c
try_head_merge_bb is willing to move over the loads across the casesi.
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From: "przemyslaw.wirkus at arm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89436] New: [8/9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
Date: Thu, 21 Feb 2019 15:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89436
Bug ID: 89436
Summary: [8/9 Regression] ICE in
glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal
compiler error: in decompose, at rtl.h:2266)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: przemyslaw.wirkus at arm dot com
Target Milestone: ---
# GCC Version
revision r268990
# Host system type
Linux machine 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
Ubuntu 18.04.2 LTS
# Options given when GCC was configured/built (gcc2 stage)
--target=arm-none-linux-gnueabi \
--enable-shared \
--disable-libatomic \
--without-cloog \
--without-isl \
--disable-libssp \
--disable-libgomp \
--disable-libmudflap \
--disable-libquadmath \
--enable-checking=yes \
--enable-languages=c \
--with-float=softfp \
--with-fpu=crypto-neon-fp-armv8 \
--with-mode=thumb \
--with-arch=armv8-a \
--with-arch=armv7-a
# Reduced testcase and command line that triggers the bug
$cat e_pow_cpp.c
typedef double a;
b;
c() {
a d, e;
b = d + d * e;
}
$ ./arm-none-linux-gnueabi-gcc -O2 -g e_pow_cpp.c -S -w -march=armv8-a
-mfloat-abi=softfp -mfpu=crypto-neon-fp-armv8
e_pow_cpp.c:2:1: warning: data definition has no type or storage class
2 | b;
| ^
e_pow_cpp.c:2:1: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
e_pow_cpp.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
3 | c() {
| ^
e_pow_cpp.c: In function ‘c’:
e_pow_cpp.c:6:1: error: qsort comparator non-negative on sorted output: 0
6 | }
| ^
during RTL pass: cprop_hardreg
e_pow_cpp.c:6:1: internal compiler error: qsort checking failed
0x5a3764 qsort_chk_error
$src/gcc/gcc/vec.c:214
0x14f0b09 qsort_chk(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
$src/gcc/gcc/vec.c:257
0x151d1b1 gcc_qsort(void*, unsigned long, unsigned long, int (*)(void const*,
void const*))
$src/gcc/gcc/sort.cc:238
0x7a6fa8 vec<df_mw_hardreg*, va_heap, vl_embed>::qsort(int (*)(void const*,
void const*))
$src/gcc/gcc/vec.h:1114
0x7a6fa8 vec<df_mw_hardreg*, va_heap, vl_ptr>::qsort(int (*)(void const*, void
const*))
$src/gcc/gcc/vec.h:1898
0x7a6fa8 df_sort_and_compress_mws
$src/gcc/gcc/df-scan.c:2252
0x7a6fa8 df_canonize_collection_rec
$src/gcc/gcc/df-scan.c:2281
0x7a932f df_insn_refs_collect
$src/gcc/gcc/df-scan.c:3229
0x7a973a df_insn_refs_verify
$src/gcc/gcc/df-scan.c:4088
0x7ab403 df_insn_rescan(rtx_insn*)
$src/gcc/gcc/df-scan.c:1065
0xb44897 confirm_change_group()
$src/gcc/gcc/recog.c:503
0xb47c1c apply_change_group()
$src/gcc/gcc/recog.c:516
0xb4bbc8 copyprop_hardreg_forward_1
$src/gcc/gcc/regcprop.c:1001
0xb4bfb9 execute
$src/gcc/gcc/regcprop.c:1307
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-634514-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 15:25:01 2019
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Subject: [Bug rtl-optimization/89434] [8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Thu, 21 Feb 2019 15:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Testcase for gcc.c-torture/execute/:
/* PR rtl-optimization/89434 */
#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ == 8 && __CHAR_BIT__ == 8
long g = 0;
static inline unsigned long long
foo (unsigned long long u)
{
unsigned x;
__builtin_mul_overflow (-1, g, &x);
u |= (unsigned) u < (unsigned short) x;
return x - u;
}
int
main ()
{
unsigned long long x = foo (0x222222222ULL);
if (x != 0xfffffffddddddddeULL)
__builtin_abort ();
return 0;
}
#else
int
main ()
{
return 0;
}
#endif
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501
--- Comment #14 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
(In reply to Martin Liška from comment #12)
> However:
> g++-8 -fsanitize=address global4.c -fno-common && ./a.out
> =================================================================
> ==12713==ERROR: AddressSanitizer: global-buffer-overflow on address
> 0x0000004040e4 at pc 0x00000040118e bp 0x7fffffffdc00 sp 0x7fffffffdbf8
> READ of size 4 at 0x0000004040e4 thread T0
> #0 0x40118d in main (/home/marxin/Programming/testcases/a.out+0x40118d)
> #1 0x7ffff7076b7a in __libc_start_main ../csu/libc-start.c:308
> #2 0x4010a9 in _start (/home/marxin/Programming/testcases/a.out+0x4010a9)
>
> 0x0000004040e4 is located 0 bytes to the right of global variable 'f'
> defined in 'global4.c:1:5' (0x4040e0) of size 4
> SUMMARY: AddressSanitizer: global-buffer-overflow
> (/home/marxin/Programming/testcases/a.out+0x40118d) in main
> Shadow bytes around the buggy address:
> 0x0000800787c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0000800787d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0000800787e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x0000800787f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x000080078800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> =>0x000080078810: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00[04]f9 f9 f9
> 0x000080078820: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
> 0x000080078830: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x000080078840: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x000080078850: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0x000080078860: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
> There's a left 'f9', but the variable has 4 x '00' which is wrong. That's
> probably due to some alignment. But fixing that would fix the underlying
> problem of this PR.
>
As far as I can tell, this particular redzone has nothing to do with globals
layout. It is produced by the following calls:
#0 __asan::PoisonShadow (addr=6294944, size=64, value=249 '\371') at
/home/src/gcc/libsanitizer/asan/asan_poisoning.cc:39
#1 0x00007ffff716ac31 in __asan_register_globals (globals=0x600da0, n=1) at
/home/src/gcc/libsanitizer/asan/asan_globals.cc:371
#2 0x0000000000400815 in _GLOBAL__sub_I_00099_1_main () at global4.c:6
#3 0x000000000040086d in __libc_csu_init ()
#4 0x00007ffff6d847bf in __libc_start_main (main=0x40079f <main>, argc=1,
argv=0x7fffffffe6b8, init=0x400820 <__libc_csu_init>, fini=<optimized out>,
rtld_fini=<optimized out>,
stack_end=0x7fffffffe6a8) at ../csu/libc-start.c:247
#5 0x00000000004006b9 in _start ()
Looking at asan_globals.cc:370:
// Poison the metadata. It should not be accessible to user code.
PoisonShadow(reinterpret_cast<uptr>(globals), n * sizeof(__asan_global),
kAsanGlobalRedzoneMagic);
So this redzone is just a struct __asan_global, which is being poisoned.
gcc-7 and gcc-8 just make this struct relocate at different adresses for some
reason.
>From gcc-bugs-return-634516-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 15:43:24 2019
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89437] New: [9 regression] incorrect result for sinl (atanl (x))
Date: Thu, 21 Feb 2019 15:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89437
Bug ID: 89437
Summary: [9 regression] incorrect result for sinl (atanl (x))
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
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A recently added optimization uses an inline expansion for sinl (atanl (x)). As
it involves computing sqrtl (x * x + 1) which can overflow for large x, there
is a check to ensure x is within the right range. The check emitted is x <=
sqrtl (LDBL_MAX). It's not clear whether that's a bug in mpfr or
build_sinatan_real, however it is safe to change the test to x < sqrtl
(LDBL_MAX).
In principle the comparison should use a much smaller constant given that x * x
+ 1 equals x * x for x > 2^113 for any long double format, so we know sinl
(atanl (x)) must be 1.0 for all larger values.
Testcase is gcc.dg/sinatan-1.c after using nextafterl instead of incorrect
nextafter for the long double. I'll post a patch to fix this.
>From gcc-bugs-return-634517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 15:50:03 2019
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 15:50:00 -0000
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--- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Thu, Feb 21, 2019 at 10:09:03AM +0000, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89431
>
> Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Priority|P3 |P5
> Status|UNCONFIRMED |NEW
> Last reconfirmed| |2019-02-21
> CC| |kargl at gcc dot gnu.org
> Ever confirmed|0 |1
> Severity|normal |enhancement
>
> --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> These macros have been introduced at revision r267464.
>
> Looking at the code I don't see why __GFC_REAL_* are defined, but not
> __GFC_INTEGER_*.
>
The INTEGER are not needed for the IEEE arithmetic modules. Read
ieee_arithmetic.F90.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89438] New: [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89438
Bug ID: 89438
Summary: [9 Regression] ICE in
glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal
compiler error: in decompose, at rtl.h:2266)
Product: gcc
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# GCC Version
revision r268990
# Host system type
Linux machine 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
Ubuntu 18.04.2 LTS
# Options given when GCC was configured/built (gcc2 stage)
--target=arm-none-linux-gnueabi \
--enable-shared \
--disable-libatomic \
--without-cloog \
--without-isl \
--disable-libssp \
--disable-libgomp \
--disable-libmudflap \
--disable-libquadmath \
--enable-checking=yes \
--enable-languages=c \
--with-float=softfp \
--with-fpu=crypto-neon-fp-armv8 \
--with-mode=thumb \
--with-arch=armv8-a \
--with-arch=armv7-a
# Reduced testcase and command line that triggers the bug
$ cat e_pow_cpp.c
typedef double a;
struct {
double b;
double c;
struct {
double d, e
} f[]
} g;
h, i, j;
double k;
double l() {
int m;
if (j)
return;
long ix, p = ix - 80;
a kd, n;
n = kd * h + g.f[p].e;
m = n;
a o = 1 ? m : 1.0;
k = i ? -o : o;
return k;
}
$ ./arm-none-linux-gnueabi-gcc -O2 -g e_pow_cpp.c -S -w -march=armv8-a
-mfloat-abi=softfp -mfpu=crypto-neon-fp-armv8
during RTL pass: vartrack
e_pow_cpp.c: In function ‘l’:
e_pow_cpp.c:22:1: internal compiler error: in decompose, at rtl.h:2266
22 | }
| ^
0xbbc00f wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*,
unsigned int, std::pair<rtx_def*, machine_mode> const&)
$src/gcc/gcc/rtl.h:2264
0xbbc00f wide_int_ref_storage<false,
false>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&, unsigned int)
$src/gcc/gcc/wide-int.h:1013
0xbbc00f generic_wide_int<wide_int_ref_storage<false, false>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, unsigned int)
$src/gcc/gcc/wide-int.h:788
0xbbc00f wi::binary_traits<std::pair<rtx_def*, machine_mode>,
std::pair<rtx_def*, machine_mode>, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type>::result_type wi::sub<std::pair<rtx_def*,
machine_mode>, std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, std::pair<rtx_def*, machine_mode> const&)
$src/gcc/gcc/wide-int.h:2488
0xbbc00f simplify_const_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
$src/gcc/gcc/simplify-rtx.c:4282
0xbb9a7f simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
$src/gcc/gcc/simplify-rtx.c:2164
0xbc566b simplify_plus_minus
$src/gcc/gcc/simplify-rtx.c:4686
0xbb62ab simplify_binary_operation_1
$src/gcc/gcc/simplify-rtx.c:2388
0xbb9acd simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
$src/gcc/gcc/simplify-rtx.c:2167
0x780327 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1856
0x781c8e cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
$src/gcc/gcc/cselib.c:1562
0xf11ef1 vt_expand_var_loc_chain
$src/gcc/gcc/var-tracking.c:8384
0xf11ef1 vt_expand_loc_callback
$src/gcc/gcc/var-tracking.c:8547
0x780242 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1716
0x77ffc5 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1755
0x781c8e cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
$src/gcc/gcc/cselib.c:1562
0xf11ef1 vt_expand_var_loc_chain
$src/gcc/gcc/var-tracking.c:8384
0xf11ef1 vt_expand_loc_callback
$src/gcc/gcc/var-tracking.c:8547
0x780242 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1716
0x77ffc5 cselib_expand_value_rtx_1
$src/gcc/gcc/cselib.c:1755
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86829] Missing sin(atan(x)) and cos(atan(x)) optimizations
Date: Thu, 21 Feb 2019 15:56:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #8 from Wilco <wilco at gcc dot gnu.org> ---
This has caused a regression, see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89437 and
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01739.html
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
Date: Thu, 21 Feb 2019 15:57:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Known to work| |8.2.1
Last reconfirmed| |2019-02-21
Component|c |rtl-optimization
CC| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
Target Milestone|--- |9.0
Known to fail| |9.0
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed. Also needs -mthumb if your compiler use it by default.
>From gcc-bugs-return-634521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 16:02:35 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Thu, 21 Feb 2019 16:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89434
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|rtl-optimization |target
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|8.3 |7.5
Summary|[8/9 Regression] wrong code |[7/8/9 Regression] wrong
|with -Og and |code with -Og and
|__builtin_mul_overflow() |__builtin_mul_overflow()
>From gcc-bugs-return-634522-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 16:09:05 2019
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Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Thu, 21 Feb 2019 16:09:00 -0000
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--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Thu, Feb 21, 2019 at 10:44:25AM +0000, dominiq at lps dot ens.fr wrote:
> 4 8 10 16
> __GFC_REAL_10__ defined
> __GFC_REAL_16__ defined
These are needed for the IEEE arithmetic module, where
there is a catch 22 in writing ieee_selected_real_kind.
One needs to know that REAL(10) and REAL(16) exists,
and selected_real_kind is insufficient. These can
probably be removed if someone wants to rewrite
ieee_arithmetic.F90 in m4, and then have the library
build system generate ieee_arithmetic.f90 from m4.
>From gcc-bugs-return-634523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 16:11:25 2019
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think this started with r197520.
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45790
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45790&action=edit
gcc9-pr89434.patch
Untested fix.
>From gcc-bugs-return-634525-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 16:32:22 2019
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Thu, 21 Feb 2019 16:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89434
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |collison at gcc dot gnu.org,
| |gretay at gcc dot gnu.org,
| |ktkachov at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On the testcase, we have
(insn 56 55 50 2 (set (reg:SI 137 [ u+4 ])
(const_int 2 [0x2])) "pr89434.c":9:5 652 {*arm_movsi_vfp}
(nil))
...
(insn 53 52 24 2 (set (subreg:SI (reg:DI 118 [ _11 ]) 4)
(minus:SI (minus:SI (reg:SI 139 [ _5+4 ])
(reg:SI 137 [ u+4 ]))
(ltu:SI (reg:CC_C 100 cc)
(const_int 0 [0])))) "pr89434.c":10:12 29 {*subsi3_carryin}
(nil))
in asmcons and IRA determines it can propagate the constant into the
instruction:
(insn 53 57 24 2 (set (subreg:SI (reg:DI 118 [ _11 ]) 4)
(minus:SI (plus:SI (reg:SI 139 [ _5+4 ])
(const_int -2 [0xfffffffffffffffe]))
(ltu:SI (reg:CC_C 100 cc)
(const_int 0 [0])))) "pr89434.c":10:12 30
{*subsi3_carryin_const}
(expr_list:REG_DEAD (reg:SI 139 [ _5+4 ])
(expr_list:REG_DEAD (reg:CC_C 100 cc)
(nil))))
The RTL pattern looks good, but it actually emits
sbc r1, r3, #1
instruction, which is actually r1 = r3 + (-1) - carry aka r1 = r3 - 1 - carry
rather than r1 = r3 + (-2) - carry aka r1 = r3 - 2 - carry.
We shouldn't bitwise ~ the number, but negate it to get the constant we want.
And the *subsi3_carryin_compare_const looks totally wrong, not only it doesn't
contain even the PR70014 fix, but if it matches, it will match something
completely different from what it wants to match. This define_insn change is
completely untested though.
>From gcc-bugs-return-634526-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 17:12:15 2019
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Subject: [Bug c/89439] New: [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:268
Date: Thu, 21 Feb 2019 17:12:00 -0000
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Bug ID: 89439
Summary: [7/8/9 Regression] ICE in make_ssa_name_fn, at
tree-ssanames.c:268
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
Feeding g++ with testsuite/gcc.c-torture/compile/pr84305.c
affects versions since g++-7 at -O1+ :
$ cat pr84305.c
int res, a, b;
void *foo;
static void f2 (int arg) { res = ((int (*)[arg][b]) foo)[0][0][0]; }
void f1 (void) { f2 (a); }
$ gcc-9-20190217 -c pr84305.c -O2
$
$ g++-6 -c pr84305.c -O2
$
$ g++-9-20190217 -c pr84305.c -O0
$
$ g++-9-20190217 -c pr84305.c -O2
during GIMPLE pass: eipa_sra
pr84305.c: In function 'void _ZL2f2i.isra.0(int)':
pr84305.c:4:26: internal compiler error: Segmentation fault
4 | void f1 (void) { f2 (a); }
| ^
0xe32b7f crash_signal
../../gcc/toplev.c:326
0x1076397 make_ssa_name_fn(function*, tree_node*, gimple*, unsigned int)
../../gcc/tree-ssanames.c:268
0xebb95e make_ssa_name
../../gcc/tree-ssanames.h:114
0xebb95e remap_ssa_name
../../gcc/tree-inline.c:245
0xec2c17 copy_tree_body_r(tree_node**, int*, void*)
../../gcc/tree-inline.c:1134
0x112d5f3 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12093
0x112de82 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12415
0x112de82 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12415
0xeba9f6 remap_type_1
../../gcc/tree-inline.c:594
0xeb9481 remap_type(tree_node*, copy_body_data*)
../../gcc/tree-inline.c:623
0xec3952 remap_gimple_op_r
../../gcc/tree-inline.c:1015
0x112d5f3 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12093
0x112de82 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12415
0x112de82 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../gcc/tree.c:12415
0xb72a13 walk_gimple_op(gimple*, tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
../../gcc/gimple-walk.c:202
0xebcb91 remap_gimple_stmt
../../gcc/tree-inline.c:1794
0xebdf54 copy_bb
../../gcc/tree-inline.c:1844
0xebfcba copy_cfg_body
../../gcc/tree-inline.c:2779
0xebfcba copy_body
../../gcc/tree-inline.c:3021
0xec93a6 tree_function_versioning(tree_node*, tree_node*, vec<ipa_replace_map*,
va_gc, vl_embed>*, bool, bitmap_head*, bool, bitmap_head*, basic_block_def*)
../../gcc/tree-inline.c:5989
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Subject: [Bug c/89440] New: [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Thu, 21 Feb 2019 17:15:00 -0000
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Bug ID: 89440
Summary: [9 Regression] ICE in
vect_create_epilog_for_reduction, at
tree-vect-loop.c:5502
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Changed between 20181111 and 20181118,
with -Ofast or -O3 -ffast-math :
$ cat z1.c
float
f (float x)
{
int i;
float j;
float a = 0;
for (i = 0; i < 4; ++i)
{
for (j = 0; j < 4; ++j)
{
a += 1;
x += a;
}
}
return x;
}
$ gcc-9-20181111 -c z1.c -Ofast
$
$ gcc-9-20190217 -c z1.c -Ofast
during GIMPLE pass: vect
z1.c: In function 'f':
z1.c:2:1: internal compiler error: in vect_create_epilog_for_reduction, at
tree-vect-loop.c:5502
2 | f (float x)
| ^
0x5b2dbd vect_create_epilog_for_reduction
../../gcc/tree-vect-loop.c:5500
0xc865c4 vectorizable_reduction(_stmt_vec_info*, gimple_stmt_iterator*,
_stmt_vec_info**, _slp_tree*, _slp_instance*, vec<stmt_info_for_cost, va_heap,
vl_ptr>*)
../../gcc/tree-vect-loop.c:7088
0xc79390 vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*,
_slp_tree*, _slp_instance*)
../../gcc/tree-vect-stmts.c:9784
0xc7aa3f vect_transform_loop_stmt
../../gcc/tree-vect-loop.c:8139
0xc7d78d vect_transform_loop(_loop_vec_info*)
../../gcc/tree-vect-loop.c:8358
0xca3726 try_vectorize_loop_1
../../gcc/tree-vectorizer.c:979
0xca3fc1 vectorize_loops()
../../gcc/tree-vectorizer.c:1111
>From gcc-bugs-return-634528-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 17:20:53 2019
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Subject: [Bug rtl-optimization/89435] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
Date: Thu, 21 Feb 2019 17:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89435
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |jakub at gcc dot gnu.org,
| |segher at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, before combine we have:
(insn 106 2 23 2 (set (reg:SI 170 [+4 ])
(const_int 0 [0])) "pr89435.c":8:7 179 {*arm_movsi_insn}
(nil))
...
(insn 27 26 28 2 (set (reg:SI 142)
(const_int 255 [0xff])) "pr89435.c":9:7 179 {*arm_movsi_insn}
(nil))
...
(insn 27 26 28 2 (set (reg:SI 142)
(const_int 255 [0xff])) "pr89435.c":9:7 179 {*arm_movsi_insn}
(nil))
(insn 28 27 36 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg:SI 142)
(reg:SI 170 [+4 ])))
(set (reg:SI 141)
(minus:SI (reg:SI 142)
(reg:SI 170 [+4 ])))
]) "pr89435.c":9:7 28 {subsi3_compare1}
(expr_list:REG_DEAD (reg:SI 170 [+4 ])
(expr_list:REG_DEAD (reg:SI 142)
(expr_list:REG_UNUSED (reg:CC 100 cc)
(nil)))))
...
(insn 42 99 43 4 (set (reg:QI 125 [ _18 ])
(subreg:QI (reg:SI 141) 0)) "pr89435.c":9:7 189 {*arm_movqi_insn}
(expr_list:REG_DEAD (reg:SI 141)
(nil)))
...
(insn 77 76 78 8 (set (reg:SI 164)
(and:SI (subreg:SI (reg:QI 125 [ _18 ]) 0)
(const_int 255 [0xff]))) "pr89435.c":11:9 82 {*arm_andsi3_insn}
(expr_list:REG_DEAD (reg:QI 125 [ _18 ])
(nil)))
(insn 78 77 79 8 (set (reg:SI 124 [ _15 ])
(plus:SI (reg:SI 164)
(reg:SI 162))) "pr89435.c":11:9 4 {*arm_addsi3}
(expr_list:REG_DEAD (reg:SI 164)
(expr_list:REG_DEAD (reg:SI 162)
(nil))))
That looks good and will set (reg:SI 164) to 255.
Combiner makes:
(insn 28 27 36 2 (set (reg:SI 141)
(const_int 255 [0xff])) "pr89435.c":9:7 179 {*arm_movsi_insn}
(nil))
...
(insn 42 36 43 2 (set (reg:QI 125 [ _18 ])
(subreg:QI (reg:SI 141) 0)) "pr89435.c":9:7 189 {*arm_movqi_insn}
(expr_list:REG_DEAD (reg:SI 141)
(nil)))
...
(insn 78 77 79 7 (set (reg:SI 124 [ _15 ])
(plus:SI (reg:SI 162)
(subreg:SI (reg:QI 125 [ _18 ]) 0))) "pr89435.c":11:9 4
{*arm_addsi3}
(expr_list:REG_DEAD (reg:QI 125 [ _18 ])
(expr_list:REG_DEAD (reg:SI 162)
(nil))))
and that looks already wrong to me, because it has optimized away the &= 255.
The paradoxical register in the insn 78 means the upper bits are undefined, but
we really use the upper bits later on (fully 32-bit comparison). Either it
should have propagated the constant down, or it can't assume anything about the
paradoxical subreg bits (if they must not be ignored), because the RA can stick
the different pseudos into different registers, rather than setting a single hw
register to 0xff and then having the upper bits always zero.
>From gcc-bugs-return-634529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 17:24:08 2019
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Subject: [Bug rtl-optimization/89435] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
Date: Thu, 21 Feb 2019 17:24:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In particular, the wrong combination is I think:
Trying 77 -> 78:
77: r164:SI=r125:QI#0&0xff
REG_DEAD r125:QI
78: r124:SI=r164:SI+r162:SI
REG_DEAD r164:SI
REG_DEAD r162:SI
Successfully matched this instruction:
(set (reg:SI 124 [ _15 ])
(plus:SI (reg:SI 162)
(subreg:SI (reg:QI 125 [ _18 ]) 0)))
That is simply not equivalent, even if we know that the value assigned to
pseudo 125 is constant 0xff and we loaded it into SImode register somewhere.
>From gcc-bugs-return-634530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 17:35:15 2019
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|wrong code with -O1 |[7/8/9 Regression] wrong
|-march=armv4 |code with -O1 -march=armv4
|-fno-forward-propagate with |-fno-forward-propagate with
|__builtin_sub_overflow() |__builtin_sub_overflow()
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bisecting now, from skimming of what combiner does r242085 was still ok and
r242439 already not. But don't have a setup where can I actually run
-march=armv4 code.
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Subject: [Bug c++/30357] Enum typecast warning
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu.org,
| |redi at gcc dot gnu.org
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Andrew Pinski from comment #1)
> > Related to PR 12242.
>
> And also bug 67314 and bug 7654 (assignments without the cast), bug 78736
> and bug 60591 (conversions), and bug 52763 (comparisons). Should probably be
> closed as a dup of one of them. Or maybe the other way around.
Any preferences as to which way to go?
>From gcc-bugs-return-634532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 18:02:18 2019
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Subject: [Bug fortran/86119] [8/9 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
Date: Thu, 21 Feb 2019 18:02:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Thu Feb 21 18:01:41 2019
New Revision: 269070
URL: https://gcc.gnu.org/viewcvs?rev=269070&root=gcc&view=rev
Log:
2019-02-21 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/86119
* class.c (gfc_get_len_component): Add argument k for kind.
If the kind of the resulting expression is not equal to k,
convert it.
* gfortran.h (gfc_len_component): Adjust prototype.
* simplify.c (gfc_simplify_len): Pass kind to
gfc_get_len_component.
2019-02-21 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/86119
* gfortran.dg/warn_conversion_11.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/warn_conversion_11.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/class.c
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/simplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/86119] [8 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.3 |8.4
Summary|[8/9 Regression] Intrinsic |[8 Regression] Intrinsic
|len has wrong type if used |len has wrong type if used
|within select type for a |within select type for a
|class(*) string |class(*) string
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk, waiting until gcc-8 reopens for a backport.
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Subject: [Bug c/89425] [9 Regression] -Wabsolute-value warns in dead subexpressions
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Testing a simple fix.
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Subject: [Bug c/89425] [9 Regression] -Wabsolute-value warns in dead subexpressions
Date: Thu, 21 Feb 2019 18:09:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |msebor at gcc dot gnu.org
Summary|-Wabsolute-value warns in |[9 Regression]
|dead code |-Wabsolute-value warns in
| |dead subexpressions
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. For reference, the -Wshift-count-overflow warning handles this
correctly (of course, if still fires when the dead code is in an if statement).
Since there is a precedent/solution for avoiding these warnings in the C
front-end I suppose this bug qualifies as a 9 regression.
$ cat u.c && gcc -S -Wall -Wextra -m32 u.c
long f (long x)
{
return sizeof (x) == 8 ? x >> 63 : x >> 31; // no warning for unreachable
subexpression (good)
}
long g (long x)
{
if (sizeof (x) == 8) return x >> 63; else return x >> 31; //
-Wshift-count-overflow for unreachable statement
}
double h (double x)
{
return sizeof (x) == sizeof (float) ? __builtin_fabsf (x) : __builtin_fabs
(x); // -Wabsolute-value for unreachable subexpression
}
u.c: In function ‘g’:
u.c:8:33: warning: right shift count >= width of type [-Wshift-count-overflow]
8 | if (sizeof (x) == 8) return x >> 63; else return x >> 31;
| ^~
u.c: In function ‘h’:
u.c:13:41: warning: absolute value function ‘__builtin_fabsf’ given an argument
of type ‘double’ but has parameter of type ‘float’ which may cause truncation
of value [-Wabsolute-value]
13 | return sizeof (x) == sizeof (float) ? __builtin_fabsf (x) :
__builtin_fabs (x); // -Wabsolute-value for unreachable subexpression
| ^~~~~~~~~~~~~~~
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Subject: [Bug c++/88690] [7/8/9 Regression] c++17 internal compiler error: in output_constructor_regular_field, at varasm.c:5031
Date: Thu, 21 Feb 2019 18:16:00 -0000
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--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 21 18:16:15 2019
New Revision: 269073
URL: https://gcc.gnu.org/viewcvs?rev=269073&root=gcc&view=rev
Log:
PR c++/88690 - C++17 ICE with empty base in aggregate.
Base fields for empty bases appear in initialization order, which may not be
the same as layout order. If they also show up in a CONSTRUCTOR in that
order, output_constructor_regular_field aborts because it understandably
doesn't want to go backwards. I also considered making o_c_r_f more
tolerant of the case where the out-of-order field has fieldsize 0, and so no
actual data needs to be emitted, but we might as well avoid adding an
element to the CONSTRUCTOR in the first place.
* typeck2.c (process_init_constructor_record): Skip trivial
initialization of an empty base.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/aggr-base7.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck2.c
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Subject: [Bug c++/88572] error: braces around scalar initializer - should be a warning
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jason at gcc dot gnu.org
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #18 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed in GCC 9.
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Subject: [Bug c++/88690] [7/8 Regression] c++17 internal compiler error: in output_constructor_regular_field, at varasm.c:5031
Date: Thu, 21 Feb 2019 18:18:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] c++17 |[7/8 Regression] c++17
|internal compiler error: in |internal compiler error: in
|output_constructor_regular_ |output_constructor_regular_
|field, at varasm.c:5031 |field, at varasm.c:5031
--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug testsuite/83453] FAIL: c-c++-common/Wattributes.c -std=gnu++98 (test for warnings, line 404)
Date: Thu, 21 Feb 2019 18:18:00 -0000
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--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
The test was fixed to handle error at 404 on hppa64 and s390:
inline int ATTR ((aligned (4)))
finline_hot_noret_align (int); /* { dg-warning "ignoring attribute .aligned
\
\(4\\). because it conflicts with attribute .aligned \\(8\\)." "" { target { !
{
hppa*64*-*-* s390*-*-* } } } } */
/* { dg-error "alignment for '.*finline_hot_noret_align.*' must be at least 8"
"
" { target hppa*64*-*-* s390*-*-* } .-1 } */
However, the error no longer occurs with gcc-9:
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:398:29: warning:
igno
ring attribute 'cold' because it conflicts with attribute 'hot' [-Wattributes]
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:395:1: note:
previous
declaration here
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:401:29: warning:
igno
ring attribute 'warn_unused_result' because it conflicts with attribute
'noretur
n' [-Wattributes]
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:398:1: note:
previous
declaration here
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:411:29: warning:
igno
ring attribute 'const' because it conflicts with attribute 'noreturn'
[-Wattribu
tes]
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:408:1: note:
previous
declaration here
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:425:1: warning:
ignor
ing attribute 'nocommon' because it conflicts with attribute 'common'
[-Wattribu
tes]
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/Wattributes.c:422:1: note:
previous
declaration here
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Subject: [Bug c++/88380] [7/8 Regression] Sequence of not-explicitly initialised, initialised, variable length generates no initialiser
Date: Thu, 21 Feb 2019 18:19:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] Sequence |[7/8 Regression] Sequence
|of not-explicitly |of not-explicitly
|initialised, initialised, |initialised, initialised,
|variable length generates |variable length generates
|no initialiser |no initialiser
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The paradoxical register in the insn 78 means the upper bits are
> undefined, but we really use the upper bits later on (fully 32-bit
> comparison). Either it should have propagated the constant down, or it
> can't assume anything about the paradoxical subreg bits (if they must not be
> ignored), because the RA can stick the different pseudos into different
> registers, rather than setting a single hw register to 0xff and then having
> the upper bits always zero.
The RA (reload/LRA) has special provisions for WORD_REGISTER_OPERATIONS targets
though to make sure that only full words are reloaded, so that the combiner can
make such assumptions. I can have a closer look at the PR if you want.
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/89441] New: FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for excess errors)
Date: Thu, 21 Feb 2019 18:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89441
Bug ID: 89441
Summary: FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for
excess errors)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
spawn /test/gnu/gcc/objdir/gcc/testsuite/g++/../../xg++
-B/test/gnu/gcc/objdir/gcc/testsuite/g++/../../
/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/ipa/pr89009.C
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -nostdinc++
-I/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/hppa64-hp-hpux11.11
-I/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/libsupc++
-I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -std=gnu++98
-fvisibility=hidden -fpic -O2 -fno-inline
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libstdc++-v3/src/.libs
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libstdc++-v3/src/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libstdc++-v3/src/.libs -lm -o
./pr89009.exe
ld: (Warning) Potential unresolved symbol "main":
shared library reference is resolved to non-exported
definition in file "/var/tmp//ccx7UrAn.o".
1 warnings.
output is:
ld: (Warning) Potential unresolved symbol "main":
shared library reference is resolved to non-exported
definition in file "/var/tmp//ccx7UrAn.o".
1 warnings.
FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for excess errors)
Excess errors:
ld: (Warning) Potential unresolved symbol "main":
shared library reference is resolved to non-exported
definition in file "/var/tmp//ccx7UrAn.o".
1 warnings.
Why does test hide main?
>From gcc-bugs-return-634543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 18:59:37 2019
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/87412] -fcf-protection and -mindirect-branch=thunk are incompatible on x86_64
Date: Thu, 21 Feb 2019 18:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87412
--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Feb 21 18:59:00 2019
New Revision: 269074
URL: https://gcc.gnu.org/viewcvs?rev=269074&root=gcc&view=rev
Log:
i386: Replace -fcf-protection with -fcf-protection=branch
Since -mindirect-branch is incompatible with -fcf-protection=return and
-fcf-protection, replace -fcf-protection with -fcf-protection=branch.
PR target/87412
* gcc.target/i386/indirect-thunk-attr-14.c: Replace
-fcf-protection with -fcf-protection=branch.
* gcc.target/i386/indirect-thunk-attr-15.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-16.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-8.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-9.c: Likewise.
* gcc.target/i386/indirect-thunk-extern-10.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-14.c
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-15.c
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-16.c
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-10.c
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-8.c
trunk/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-9.c
>From gcc-bugs-return-634544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:00:40 2019
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Subject: [Bug testsuite/83453] FAIL: c-c++-common/Wattributes.c -std=gnu++98 (test for warnings, line 404)
Date: Thu, 21 Feb 2019 19:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83453
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
The checking was relaxed to allow the attribute to specify a less restrictive
alignment than the minimum provided by the target without triggering the
warning, so the xfails can be removed. The rationale for the relaxation is
that a looser alignment is trivially satisfied by providing a stricter
alignment. The following discussion has the background:
https://gcc.gnu.org/ml/gcc/2018-11/msg00127.html
>From gcc-bugs-return-634545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:15:21 2019
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Subject: [Bug fortran/86119] [8 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
Date: Thu, 21 Feb 2019 19:15:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Just to make sure I don't forget this.
>From gcc-bugs-return-634546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:18:28 2019
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Subject: [Bug testsuite/83453] FAIL: c-c++-common/Wattributes.c -std=gnu++98 (test for warnings, line 404)
Date: Thu, 21 Feb 2019 19:18:00 -0000
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--- Comment #5 from dave.anglin at bell dot net ---
On 2019-02-21 2:00 p.m., msebor at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83453
>
> --- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
> The checking was relaxed to allow the attribute to specify a less restrictive
> alignment than the minimum provided by the target without triggering the
> warning, so the xfails can be removed. The rationale for the relaxation is
> that a looser alignment is trivially satisfied by providing a stricter
> alignment. The following discussion has the background:
> https://gcc.gnu.org/ml/gcc/2018-11/msg00127.html
>
Okay, I will remove hppa64 and s390 error check. However, it seems the warning
at 404 is not generated
on hppa64 and s390, but it is on other targets.
>From gcc-bugs-return-634547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:36:23 2019
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Subject: [Bug d/87824] x86_64-linux multilib issues
Date: Thu, 21 Feb 2019 19:36:00 -0000
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--- Comment #22 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
(In reply to Uroš Bizjak from comment #20)
>
> I'd like to propose an alternative patch. The testsuite harness should
> simply ask libstdc++ for correct include paths, like in the to be attached
> patch.
>
> (This is how libstdc++ testsuite determines correct include flags.)
Seems reasonable.
Filtering out flags not recognized by D would mean there's no need to touch
libstdc++.
# For the tests that mix C++ and D, need to know where headers are located.
set odir [lookfor_file ${gccpath} libstdc++-v3]
if { ${odir} != "" } {
set cxxflags [exec sh ${odir}/scripts/testsuite_flags --build-includes]
set idx [lsearch $cxxflags "-nostdinc++"]
append flags [lreplace $cxxflags $idx $idx]
}
>From gcc-bugs-return-634548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:42:22 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89442] New: [concepts] missing "wrong number of template arguments" error in requires-clause
Date: Thu, 21 Feb 2019 19:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89442
Bug ID: 89442
Summary: [concepts] missing "wrong number of template
arguments" error in requires-clause
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
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template<typename T, typename U> constexpr bool foo = true;
template<typename T> int f(T) requires foo<T> { return 0; }
int i = f(0);
$ g++17 -fconcepts con.cc -c
con.cc:5:12: error: cannot call function 'int f(T) requires foo<T> [with T =
int]'
5 | int i = f(0);
| ^
con.cc:3:26: note: constraints not satisfied
3 | template<typename T> int f(T) requires foo<T> { return 0; }
| ^
con.cc:3:26: note: 'foo<T>' evaluated to false
The error tells me that foo<T> evaluated to false, but it should say foo<T> is
invalid and report an ill-formed constraint, as in this equivalent version:
template<typename, typename>
struct bar { static constexpr bool value = true; };
template<typename T> int f(T) requires bar<T>::value { return 0; }
int i = f(0);
This second one (correctly) says:
con.cc:4:45: error: wrong number of template arguments (1, should be 2)
4 | template<typename T> int f(T) requires bar<T>::value { return 0; }
| ^
con.cc:2:8: note: provided for 'template<class, class> struct bar'
2 | struct bar { static constexpr bool value = true; };
| ^~~
con.cc:6:12: error: cannot call function 'int f(T) requires
<erroneous-expression> [with T = int]'
6 | int i = f(0);
| ^
con.cc:4:26: note: constraints not satisfied
4 | template<typename T> int f(T) requires bar<T>::value { return 0; }
| ^
con.cc:6:12: note: ill-formed constraint
6 | int i = f(0);
| ^
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Subject: [Bug c++/89442] [concepts] missing "wrong number of template arguments" error in requires-clause
Date: Thu, 21 Feb 2019 19:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89442
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
Blocks| |67491
Ever confirmed|0 |1
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491
[Bug 67491] [meta-bug] concepts issues
>From gcc-bugs-return-634550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 19:57:07 2019
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Subject: [Bug d/87824] x86_64-linux multilib issues
Date: Thu, 21 Feb 2019 19:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87824
--- Comment #23 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Iain Buclaw from comment #22)
> (In reply to Uroš Bizjak from comment #20)
> >
> > I'd like to propose an alternative patch. The testsuite harness should
> > simply ask libstdc++ for correct include paths, like in the to be attached
> > patch.
> >
> > (This is how libstdc++ testsuite determines correct include flags.)
>
> Seems reasonable.
>
> Filtering out flags not recognized by D would mean there's no need to touch
> libstdc++.
>
>
> # For the tests that mix C++ and D, need to know where headers are located.
> set odir [lookfor_file ${gccpath} libstdc++-v3]
> if { ${odir} != "" } {
> set cxxflags [exec sh ${odir}/scripts/testsuite_flags --build-includes]
> set idx [lsearch $cxxflags "-nostdinc++"]
> append flags [lreplace $cxxflags $idx $idx]
> }
Yes, this would also work; there are some additional include directories that
look specific to libstdc++ testing, but won't hurt here.
So, do you want me to officially propose the above patch or do you want to take
it from here?
>From gcc-bugs-return-634551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 20:01:56 2019
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From: "manuel.lauss at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89443] New: asm "volatile" keyword no longer supported
Date: Thu, 21 Feb 2019 20:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89443
Bug ID: 89443
Summary: asm "volatile" keyword no longer supported
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45791
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45791&action=edit
compressed preprocessed source
I'm not certain whether this is a gcc bug at all:
The attached preprocessed source, taken from qtscript-5.11.3, throws this error
with current gcc-8.2.1. A gcc-8 snapshot taken on 01-DEC-2018 used to compile
this package just fine.
It seems that the "volatile" in asm volatile (...) is no longer valid:
g++ -c test.i
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:483:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:484:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:483:15: error:
expected ‘)’ before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:518:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:519:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:518:15: error:
expected ‘)’ before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:534:5: error:
expected ‘(’ before ‘volatile’
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:535:1: error:
expected unqualified-id before string constant
../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:534:15: error:
expected ‘)’ before string constant
E.g line 105753 in test.i file:
asm volatile (
".text\n"
".globl " "ctiTrampoline" "\n"
".hidden " "ctiTrampoline" "\n"
"ctiTrampoline" ":" "\n"
"pushq %rbp" "\n"
"movq %rsp, %rbp" "\n"
"pushq %r12" "\n"
[...]
removing the "volatile" solves this. gcc-7.4.1 has the same problems.
Thank you!
>From gcc-bugs-return-634552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 20:07:52 2019
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Thu, 21 Feb 2019 20:07:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Simplified:
program p
character(:), pointer :: z(:)
z = (z)
end
>From gcc-bugs-return-634553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 20:17:53 2019
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From: "terra at gnome dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/61582] C++11 regex memory corruption
Date: Thu, 21 Feb 2019 20:17:00 -0000
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M Welinder <terra at gnome dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |terra at gnome dot org
--- Comment #22 from M Welinder <terra at gnome dot org> ---
FWIW, there is an excellent overview of regular expression engine pitfalls
and methods here:
https://swtch.com/~rsc/regexp/regexp1.html
https://swtch.com/~rsc/regexp/regexp2.html
https://swtch.com/~rsc/regexp/regexp3.html
Those are about 10 years old, but not outdated.
The TL;DR is "use NFAs and DFAs, not back-tracking".
>From gcc-bugs-return-634554-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 20:25:37 2019
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
Date: Thu, 21 Feb 2019 20:25:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #21 from Jeffrey A. Law <law at redhat dot com> ---
Sorry, but when I look at this, the warning seems correct and valid to me.
In the .fre1 dump we have:
;; basic block 2, loop depth 0, maybe hot
;; prev block 0, next block 3, flags: (NEW, VISITED)
;; pred: ENTRY (FALLTHRU,EXECUTABLE)
f.1_1 = f;
_10 = f.1_1 + 1;
if (_10 != 0)
goto <bb 3>; [INV]
else
goto <bb 4>; [INV]
;; succ: 3 (TRUE_VALUE,EXECUTABLE)
;; 4 (FALSE_VALUE,EXECUTABLE)
;; basic block 3, loop depth 0, maybe hot
;; prev block 2, next block 4, flags: (NEW, VISITED)
;; pred: 2 (TRUE_VALUE,EXECUTABLE)
iftmp.0_11 = (char) _10;
goto <bb 5>; [INV]
;; succ: 5 (FALLTHRU,EXECUTABLE)
;; basic block 4, loop depth 0, maybe hot
;; prev block 3, next block 5, flags: (NEW, VISITED)
;; pred: 2 (FALSE_VALUE,EXECUTABLE)
iftmp.0_12 = (char) f.1_1;
;; succ: 5 (FALLTHRU,EXECUTABLE)
;; basic block 5, loop depth 0, maybe hot
;; prev block 4, next block 6, flags: (NEW, VISITED)
;; pred: 3 (FALLTHRU,EXECUTABLE)
;; 4 (FALLTHRU,EXECUTABLE)
# iftmp.0_7 = PHI <iftmp.0_11(3), iftmp.0_12(4)>
_4 = (long unsigned int) f.1_1;
x.4_5 = x;
c.5_6 = c;
__builtin_strncpy (c.5_6, x.4_5, _4);
In particular note the conditional at the end of bb2 and the dataflow when _10
is zero. WHen that occurs we'll go to bb4 and we'll know that f.1_1 must have
the value -1. WHich in turn means iftmp_0.12 has the value -1 which flows
into the PHI at the start of BB5. We see all this in the .evrp dump:
;; basic block 2, loop depth 0, maybe hot
;; prev block 0, next block 3, flags: (NEW, VISITED)
;; pred: ENTRY (FALLTHRU,EXECUTABLE)
f.1_1 = f;
_10 = f.1_1 + 1;
if (_10 != 0)
goto <bb 3>; [INV]
else
goto <bb 4>; [INV]
;; succ: 3 (TRUE_VALUE,EXECUTABLE)
;; 4 (FALSE_VALUE,EXECUTABLE)
;; basic block 3, loop depth 0, maybe hot
;; prev block 2, next block 4, flags: (NEW, VISITED)
;; pred: 2 (TRUE_VALUE,EXECUTABLE)
iftmp.0_11 = (char) _10;
;; succ: 4 (FALLTHRU,EXECUTABLE)
;; basic block 4, loop depth 0, maybe hot
;; prev block 3, next block 5, flags: (NEW, VISITED)
;; pred: 3 (FALLTHRU,EXECUTABLE)
;; 2 (FALSE_VALUE,EXECUTABLE)
# iftmp.0_7 = PHI <iftmp.0_11(3), -1(2)>
_4 = (long unsigned int) f.1_1;
x.4_5 = x;
c.5_6 = c;
__builtin_strncpy (c.5_6, x.4_5, _4);
if (iftmp.0_7 != 0)
goto <bb 5>; [INV]
else
goto <bb 6>; [INV]
Jump threading will want to optimize away the test at the end of bb4, so it
duplicates bb4 isolating each incoming edge. The duplicate for the edge 2->4
will look like:
;; basic block 6, loop depth 0, count 536870912 (estimated locally), maybe
hot
;; prev block 5, next block 1, flags: (NEW, VISITED)
;; pred: 2 [50.0% (guessed)] count:536870912 (estimated locally)
(FALSE_VALUE,EXECUTABLE)
# _17 = PHI <-1(2)>
iftmp.0_18 = (char) _17;
_19 = (long unsigned int) f.1_1;
x.4_20 = x;
c.5_21 = c;
__builtin_strncpy (c.5_21, x.4_20, _19);
goto <bb 4>; [100.00%]
;; succ: 4 [always (guessed)] count:536870912 (estimated locally)
(FALLTHRU)
Which is exactly what we want and highlights the error in the original user
code. Namely that when f+1 is zero we'll make a totally bogus call to strncpy.
Suppressing warnings per Jakub's comment in c#10 would just hide the fact that
the user's code is just plain broken. If you find yourself blaming threading
for exposing a warning like this, you're barking up the wrong tree Jakub.
Threading is just exposing what's already broken in the user's original code
and we absolutely do want these warnings.
>From gcc-bugs-return-634555-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 20:34:47 2019
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r242326. Since that version, we have before ira:
(insn 28 27 36 2 (set (reg:SI 141)
(const_int 255 [0xff])) "pr89435.c":9 182 {*arm_movsi_insn}
(nil))
...
(insn 42 36 43 2 (set (reg:QI 125 [ _18 ])
(subreg:QI (reg:SI 141) 0)) "pr89435.c":9 192 {*arm_movqi_insn}
(expr_list:REG_DEAD (reg:SI 141)
(nil)))
...
(insn 78 77 79 6 (set (reg:SI 124 [ _15 ])
(plus:SI (reg:SI 162)
(subreg:SI (reg:QI 125 [ _18 ]) 0))) "pr89435.c":11 4 {*arm_addsi3}
(expr_list:REG_DEAD (reg:QI 125 [ _18 ])
(expr_list:REG_DEAD (reg:SI 162)
(nil))))
and starting with ira:
(insn 42 36 43 2 (set (reg:QI 125 [ _18 ])
(const_int -1 [0xffffffffffffffff])) "pr89435.c":9 192
{*arm_movqi_insn}
(nil))
...
(insn 78 77 79 6 (set (reg:SI 124 [ _15 ])
(plus:SI (reg:SI 162)
(subreg:SI (reg:QI 125 [ _18 ]) 0))) "pr89435.c":11 4 {*arm_addsi3}
(expr_list:REG_DEAD (reg:SI 162)
(expr_list:REG_DEAD (reg:QI 125 [ _18 ])
(nil))))
ARM has:
#define WORD_REGISTER_OPERATIONS 1
#define LOAD_EXTEND_OP(MODE) \
(TARGET_THUMB ? ZERO_EXTEND : \
((arm_arch4 || (MODE) == QImode) ? ZERO_EXTEND \
: ((BYTES_BIG_ENDIAN && (MODE) == HImode) ? SIGN_EXTEND : UNKNOWN)))
Does that mean that (set (reg:QI 125) (const_int -1)) instruction should
actually set the register to 0xff rather than 0xffffffff?
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And sure, if you could look at this (or somebody from ARM otherwise), it would
be highly appreciated.
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Subject: [Bug c++/88419] [7/8/9 Regression] [ICE] "Same canonical type node for different types" for CTAD in noexcept
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Subject: [Bug rtl-optimization/89435] [7/8/9 Regression] wrong code with -O1 -march=armv4 -fno-forward-propagate with __builtin_sub_overflow()
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Feb 21 20:47:43 2019
New Revision: 269075
URL: https://gcc.gnu.org/viewcvs?rev=269075&root=gcc&view=rev
Log:
PR libstdc++/89416 fix __is_move_insertable trait
The common base class for __is_move_insertable and __is_copy_insertable
instantiates both the copy and move tests, when only one is needed. The
unneeded one might cause errors outside the immediate context.
The solution used in this patch is to replace them with alias templates,
which will only be instantiated as needed.
PR libstdc++/89416
* include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
class template with class. Replace move and copy member types with
member alias templates, so they are only instantiated when needed.
(__is_copy_insertable, __is_move_insertable): Adjust base class.
* testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
test for C++11/14/17 as well.
* testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
test.
Added:
trunk/libstdc++-v3/testsuite/23_containers/vector/modifiers/push_back/89416.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/alloc_traits.h
trunk/libstdc++-v3/testsuite/23_containers/vector/modifiers/push_back/89130.cc
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Subject: [Bug c++/89422] [8/9 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
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Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Actually ICE on valid too:
template<typename>
struct S {
explicit(int(1)) S(int);
};
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Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And another:
template<typename>
struct S {
explicit(int{1}) S(int, int);
};
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 21 21:21:25 2019
New Revision: 269078
URL: https://gcc.gnu.org/viewcvs?rev=269078&root=gcc&view=rev
Log:
PR c++/89285
* builtins.c (fold_builtin_arith_overflow): If first two args are
INTEGER_CSTs, set intres and ovfres to constants rather than calls
to ifn.
* constexpr.c (struct constexpr_fundef): Add parms and result members.
(retrieve_constexpr_fundef): Adjust for the above change.
(register_constexpr_fundef): Save constexpr body with copy_fn,
temporarily set DECL_CONTEXT on DECL_RESULT before that.
(get_fundef_copy): Change FUN argument to FUNDEF with
constexpr_fundef * type, grab body and parms/result out of
constexpr_fundef struct and temporarily change it for copy_fn calls
too.
(cxx_eval_builtin_function_call): For __builtin_FUNCTION temporarily
adjust current_function_decl from ctx->call context. Test
!potential_constant_expression instead of !is_constant_expression.
(cxx_bind_parameters_in_call): Grab parameters from new_call. Undo
convert_for_arg_passing changes for TREE_ADDRESSABLE type passing.
(cxx_eval_call_expression): Adjust get_fundef_copy caller.
(cxx_eval_conditional_expression): For IF_STMT, allow then or else
operands to be NULL.
(label_matches): Handle BREAK_STMT and CONTINUE_STMT.
(cxx_eval_loop_expr): Add support for FOR_STMT, WHILE_STMT and DO_STMT.
(cxx_eval_switch_expr): Add support for SWITCH_STMT.
(cxx_eval_constant_expression): Handle IF_STMT, FOR_STMT, WHILE_STMT,
DO_STMT, CONTINUE_STMT, SWITCH_STMT, BREAK_STMT and CONTINUE_STMT.
For SIZEOF_EXPR, recurse on the result of fold_sizeof_expr. Ignore
DECL_EXPR with USING_DECL operand.
* lambda.c (maybe_add_lambda_conv_op): Build thisarg using
build_int_cst to make it a valid constant expression.
* g++.dg/ubsan/vptr-4.C: Expect reinterpret_cast errors.
* g++.dg/cpp1y/constexpr-84192.C (f2): Adjust expected diagnostics.
* g++.dg/cpp1y/constexpr-70265-2.C (foo): Adjust expected line of
diagnostics.
* g++.dg/cpp1y/constexpr-89285.C: New test.
* g++.dg/cpp0x/constexpr-arith-overflow.C (add, sub, mul): Ifdef out
for C++11.
(TEST_ADD, TEST_SUB, TEST_MUL): Define to Assert (true) for C++11.
* g++.dg/cpp0x/constexpr-arith-overflow2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-arith-overflow2.C
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89285.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/lambda.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-arith-overflow.C
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-70265-2.C
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-84192.C
trunk/gcc/testsuite/g++.dg/ubsan/vptr-4.C
>From gcc-bugs-return-634564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 21:23:38 2019
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Thu, 21 Feb 2019 21:23:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Known to work| |8.2.0
Known to fail| |9.0
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
My bisection blames r264721 (pr70149).
>From gcc-bugs-return-634565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 21:36:34 2019
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Subject: [Bug debug/86964] [ 7/8/9 Regression ] Too many debug symbols included, especially for extern globals
Date: Thu, 21 Feb 2019 21:36:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
CC| |law at redhat dot com
Summary|Too many debug symbols |[ 7/8/9 Regression ] Too
|included, especially for |many debug symbols
|extern globals |included, especially for
| |extern globals
--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
Adding regression marker per email from Richi which indicates this is a
regression relative to the pre-early-debug changes.
>From gcc-bugs-return-634566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 21:45:09 2019
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Subject: [Bug fortran/87103] [OOP] ICE in gfc_new_symbol() due to overlong symbol name
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Dominique d'Humieres from comment #3)
> Patch at https://gcc.gnu.org/ml/fortran/2018-09/msg00044.html.
Status of this patch? (The ICE is still there).
>From gcc-bugs-return-634568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 22:03:46 2019
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Subject: [Bug c/89440] [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Thu, 21 Feb 2019 22:03:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-21
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed; it's failing this assertion:
5497 /* FORNOW. Currently not supporting the case that an
inner-loop
5498 reduction is not used in the outer-loop (but only
outside the
5499 outer-loop), unless it is double reduction. */
5500 gcc_assert ((STMT_VINFO_RELEVANT_P (exit_phi_vinfo)
5501 && !STMT_VINFO_LIVE_P (exit_phi_vinfo))
5502 || double_reduc);
>From gcc-bugs-return-634567-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 22:03:35 2019
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Subject: [Bug c++/89443] toplevel inline-asm with volatile after the asm is not anymore support in C++
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to PR55681.
>From gcc-bugs-return-634569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 22:06:18 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Thu, 21 Feb 2019 22:06:00 -0000
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Looking at the reduced test case, we have
z.span = 0;
{
character(kind=1)[0:][1:.z] * D.3877;
integer(kind=8) D.3878;
integer(kind=8) D.3879;
integer(kind=8) D.3880;
character(kind=1)[0:][1:._F.DA0] * D.3881;
integer(kind=8) D.3882;
integer(kind=8) D.3883;
integer(kind=8) D.3884;
integer(kind=8) D.3885;
struct array01_unknown atmp.0;
logical(kind=4) D.3899;
integer(kind=8) D.3900;
void * restrict D.3901;
void * restrict D.3902;
integer(kind=8) D.3903;
integer(kind=8) D.3904;
D.3908 = .z;
(notice the absence of a declaration for D.3908 above) and later
while (1)
{
if (S.1 > D.3885) goto L.1;
{
integer(kind=8) D.3908;
integer(kind=8) D.3909;
integer(kind=8) D.3910;
I suspect this can be fixed by replacing "gfc_add_block"
with "gfc_init_block" in the right place. Now the only
problem is where...
>From gcc-bugs-return-634570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 21 22:31:33 2019
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Thu, 21 Feb 2019 22:31:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Rather, the problem seems to be somewhere in trans-expr.c:
if (expr1->ts.deferred && gfc_check_dependency (expr1, expr2, true))
rse.string_length = gfc_evaluate_now (rse.string_length, &rse.pre);
The variable created by gfc_evaluate_now here is D.3908, the culprit
for gimplification in the simplified test case. Hmm...
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Subject: [Bug fortran/88227] ICE in gfc_convert_boz, at fortran/target-memory.c:788
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88227
Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #2 from Harald Anlauf <anlauf at gmx dot de> ---
There is no suitable integer kind for -m32 to represent a real(kind=16).
target-memory.c:
801 for (index = 0; gfc_integer_kinds[index].kind != 0; ++index)
802 if ((unsigned) gfc_integer_kinds[index].bit_size >= ts_bit_size)
803 break;
804
805 expr->ts.kind = gfc_integer_kinds[index].kind;
806 buffer_size = MAX (buffer_size, size_integer (expr->ts.kind));
(gdb) p expr->ts.kind
$13 = 0
So shall we reject the conversion of the BOZ?
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Thu, 21 Feb 2019 22:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88117
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #5)
> Rather, the problem seems to be somewhere in trans-expr.c:
>
> if (expr1->ts.deferred && gfc_check_dependency (expr1, expr2, true))
> rse.string_length = gfc_evaluate_now (rse.string_length, &rse.pre);
>
>
> The variable created by gfc_evaluate_now here is D.3908, the culprit
> for gimplification in the simplified test case. Hmm...
Actually, not here.
It is
/* Stabilize a string length for temporaries. */
if (expr2->ts.type == BT_CHARACTER && !expr1->ts.deferred
&& !(VAR_P (rse.string_length)
|| TREE_CODE (rse.string_length) == PARM_DECL
|| TREE_CODE (rse.string_length) == INDIRECT_REF))
string_length = gfc_evaluate_now (rse.string_length, &rse.pre);
where string_length seems to be added to the wrong scope - it is
used before it is defined, which causes the gimplification error.
Now, I'm not sure how to change that, at least not tonight.
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--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Thu Feb 21 22:50:24 2019
New Revision: 269079
URL: https://gcc.gnu.org/viewcvs?rev=269079&root=gcc&view=rev
Log:
PR go/89170
* varasm.c (decode_addr_const): Call lookup_constant_def rather
than output_constant_def.
(add_constant_to_table): New static function.
(output_constant_def): Call add_constant_to_table.
(tree_output_constant_def): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/varasm.c
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Subject: [Bug c++/88419] [7/8/9 Regression] [ICE] "Same canonical type node for different types" for CTAD in noexcept
Date: Thu, 21 Feb 2019 23:07:00 -0000
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 21 23:07:12 2019
New Revision: 269080
URL: https://gcc.gnu.org/viewcvs?rev=269080&root=gcc&view=rev
Log:
PR c++/88419 - C++17 ICE with class template arg deduction.
Just like in make_constrained_auto, we need to defer setting TYPE_CANONICAL
until we've set fields that will affect structural_comptypes.
* pt.c (make_template_placeholder): Set TYPE_CANONICAL after
CLASS_PLACEHOLDER_TEMPLATE.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction62.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/88419] [7/8 Regression] [ICE] "Same canonical type node for different types" for CTAD in noexcept
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] [ICE] |[7/8 Regression] [ICE]
|"Same canonical type node |"Same canonical type node
|for different types" for |for different types" for
|CTAD in noexcept |CTAD in noexcept
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/89422] [8 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
Date: Thu, 21 Feb 2019 23:08:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|field_byte_offset, at |field_byte_offset, at
|dwarf2out.c:19086 |dwarf2out.c:19086
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/89422] [8 Regression] ICE in field_byte_offset, at dwarf2out.c:19086
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89422
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 21 23:07:47 2019
New Revision: 269081
URL: https://gcc.gnu.org/viewcvs?rev=269081&root=gcc&view=rev
Log:
PR c++/89422 - ICE with -g and lambda in default arg in template.
Here, we were trying to instantiate the default argument before setting
DECL_FRIEND_CONTEXT, so that the instantiated lambda ended up being treated
as part of the S template, which confused dwarf2out.
* pt.c (tsubst_function_decl): SET_DECL_FRIEND_CONTEXT sooner.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-defarg9.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/86953] [7/8 Regression] compiler crashes with constexpr operator== and specific struct (cxx_eval_bit_field_ref, at cp/constexpr.c:2704)
Date: Thu, 21 Feb 2019 23:12:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
Known to work| |9.0
Depends on| |89285
Summary|[7/8/9 Regression] compiler |[7/8 Regression] compiler
|crashes with constexpr |crashes with constexpr
|operator== and specific |operator== and specific
|struct |struct
|(cxx_eval_bit_field_ref, at |(cxx_eval_bit_field_ref, at
|cp/constexpr.c:2704) |cp/constexpr.c:2704)
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
The patch for 89285 seems to have fixed this on trunk.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89285
[Bug 89285] [8/9 Regression] ICE after casting the this pointer in the
constructor in C++17 mode
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Assuming fixed.
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Subject: [Bug target/89444] New: [9 Regression] r264052 removed PTA_AES from PTA_SKYLAKE/PTA_GOLDMONT
Date: Thu, 21 Feb 2019 23:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89444
Bug ID: 89444
Summary: [9 Regression] r264052 removed PTA_AES from
PTA_SKYLAKE/PTA_GOLDMONT
Product: gcc
Version: 9.0
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Target: i386, x86-64
r263989 moved AESNI generation to Skylake and Goldmont. But r264052
reverted it by accident.
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Subject: [Bug rtl-optimization/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r266385.
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Subject: [Bug fortran/88227] ICE in gfc_convert_boz, at fortran/target-memory.c:788
Date: Thu, 21 Feb 2019 23:23:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to Harald Anlauf from comment #2)
> There is no suitable integer kind for -m32 to represent a real(kind=16).
>
> target-memory.c:
> 801 for (index = 0; gfc_integer_kinds[index].kind != 0; ++index)
> 802 if ((unsigned) gfc_integer_kinds[index].bit_size >= ts_bit_size)
> 803 break;
> 804
> 805 expr->ts.kind = gfc_integer_kinds[index].kind;
> 806 buffer_size = MAX (buffer_size, size_integer (expr->ts.kind));
> (gdb) p expr->ts.kind
> $13 = 0
>
> So shall we reject the conversion of the BOZ?
No. Someday, I'll get around to fixing BOZ in gfortran.
The correct solution is to define a basic type of BT_BOZ.
In the gfc_expr structure, we add a new boz member and
assign it the string literal. Thus, one has
e->ts.type = BT_BOZ;
e->boz = "z'1234'";
gfc_convert_boz then needs to accept a boz expression and
convert to either REAL or INTEGER with the appropriate kind.
A REAL type should never need to go through an INTEGER
intermediate.
Note, the requirements on BOZ varies in an inconsistent
manner between the various standards. The current behaviors
goes way back to f95 where a BOZ can only technically be
in a DATA statement. That BOZ is converted to an INTEGER
with the widest range irrespective of what the data-object
was. Way back then, INTEGER(16) was the largest possible
INTEGER for gfortran on any architecture, so it was decided
to convert the BOZ into an INTEGER with at most 128-bits.
I had a patch that implemented most of the BT_BOZ concept,
but it has collected too much dust.
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Subject: [Bug c++/86917] [7/8/9 Regression] ICE in verify_ctor_sanity, at cp/constexpr.c:2798
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
The problem is that cxx_eval_vec_init_1 doesn't expect/handle the "from_array"
case.
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #3 from Ian Lance Taylor <ian at airs dot com> ---
Fixed.
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Subject: [Bug rtl-optimization/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug target/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45792
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45792&action=edit
gcc9-pr89438.patch
Untested fix. In RTL CONST_INTs in modes with narrower bitsizes than DImode
must be sign-extended from the corresponding mode, so either trunc_int_for_mode
is needed, gen_int_mode, or we need to sign-extend it manually like this.
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Subject: [Bug c++/89443] toplevel inline-asm with volatile after the asm is not anymore support in C++
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This is not a bug. This change was made in r267280:
"""
c++, asm: Do not handle any asm-qualifiers in top-level asm
Previously, "volatile" was allowed. Changing this simplifies the code,
makes things more regular, and makes the C and C++ frontends handle
this the same way.
"""
https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00605.html
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed for all open branches (7.5, 8.3, 9.0).
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Fri, 22 Feb 2019 00:07:00 -0000
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The above commit just brings 9.x into the similar state as 8.x on this
testcase, thus it is ice-on-valid.
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Subject: [Bug c++/88869] [7/8/9 Regression] ICE (Segmentation Fault) when using lambda
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Jason Merrill <jason at gcc dot gnu.org> changed:
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Subject: [Bug c++/88394] [8/9 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Feb 22 00:47:30 2019
New Revision: 269087
URL: https://gcc.gnu.org/viewcvs?rev=269087&root=gcc&view=rev
Log:
PR go/89406
net: remove unixgram test sockets
Backport https://golang.org/cl/163277 from the master library.
Updates https://gcc.gnu.org/PR89406
Reviewed-on: https://go-review.googlesource.com/c/163200
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/net/listen_test.go
trunk/libgo/go/net/mockserver_test.go
trunk/libgo/go/net/splice_test.go
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Subject: [Bug c++/89443] toplevel inline-asm with volatile after the asm is not anymore support in C++
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #2)
> This is not a bug. This change was made in r267280:
>
> """
> c++, asm: Do not handle any asm-qualifiers in top-level asm
>
> Previously, "volatile" was allowed. Changing this simplifies the code,
> makes things more regular, and makes the C and C++ frontends handle
> this the same way.
> """
>
> https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00605.html
should probably be mentioned in the "Caveats" section of the gcc-9 changes
page, and/or the "Porting To GCC 9" page
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Subject: [Bug target/89445] New: [8 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 01:54:00 -0000
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Bug ID: 89445
Summary: [8 regression] _mm512_maskz_loadu_pd "forgets" to use
the mask
Product: gcc
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Created attachment 45793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45793&action=edit
example showing segmentation fault
In the following code:
void daxpy(size_t n, double a, double const* __restrict x, double* __restrict
y)
{
const __m512d v_a = _mm512_broadcastsd_pd(_mm_set_sd(a));
const __mmask16 final = (1U << (n % 8u)) - 1;
__mmask16 mask = 65535u;
for (size_t i = 0; i < n * sizeof(double); i += 8 * sizeof(double)) {
if (i + 8 * sizeof(double) > n * sizeof(double))
mask = final;
__m512d v_x = _mm512_maskz_loadu_pd(mask, (char const *)x + i);
__m512d v_y = _mm512_maskz_loadu_pd(mask, (char const *)y + i);
__m512d tmp = _mm512_fmadd_pd(v_x, v_a, v_y);
_mm512_mask_storeu_pd((char *)y + i, mask, tmp);
}
}
When compiled with GCC 8, the loop looks like
.L5:
cmpq %rax, %r10
cmovb %r9d, %r8d
movzbl %r8b, %ecx
kmovd %ecx, %k1
leaq (%rdx,%rax), %rcx
vmovapd (%rsi,%rax), %zmm1{%k1}{z}
vmovapd (%rcx), %zmm2{%k1}{z}
vfmadd132pd %zmm0, %zmm2, %zmm1
vmovupd %zmm1, (%rcx){%k1}
addq $64, %rax
cmpq %rdi, %rax
jb .L5
Whereas GCC trunk (as of r269073) generates:
.L5:
vmovapd (%rsi,%rax), %zmm1
cmpq %rax, %r9
vfmadd213pd (%rdx,%rax), %zmm0, %zmm1
cmovb %r8d, %ecx
kmovb %ecx, %k1
vmovupd %zmm1, (%rdx,%rax){%k1}
addq $64, %rax
cmpq %rdi, %rax
jb .L5
Godbolt link: https://gcc.godbolt.org/z/2ys7ZO
Since the neither memory loads are masked, the resulting registers can contain
garbage and trigger FP exceptions. They can also cause segmentation faults if
portions of the source are not mapped regions. The attached example forces the
operation on a page boundary where half the 64 bytes addressed by the second
load are unmapped. When run, the example will crash.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89446] New: [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Fri, 22 Feb 2019 02:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89446
Bug ID: 89446
Summary: [7/8 Regression] __builtin_constant_p expression
crashes in char_traits::compare
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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#include <string_view>
int main()
{
std::string_view s1, s2;
return s1 == s2;
}
This crashes when compiled with -std=c++17 -O1 -fnon-call-exceptions
Program received signal SIGSEGV, Segmentation fault.
main () at /usr/include/c++/8/bits/char_traits.h:303
303 if (__builtin_constant_p(__n)
#0 main () at /usr/include/c++/8/bits/char_traits.h:303
I think the fix is:
--- a/libstdc++-v3/include/bits/char_traits.h
+++ b/libstdc++-v3/include/bits/char_traits.h
@@ -248,7 +248,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__constant_char_array_p(const _CharT* __a, size_t __n)
{
size_t __i = 0;
- while (__builtin_constant_p(__a[__i]) && __i < __n)
+ while (__i < __n && __builtin_constant_p(__a[__i]) && __i < __n)
__i++;
return __i == __n;
}
But we can also avoid those checks entirely for empty strings:
@@ -301,14 +301,14 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
static _GLIBCXX17_CONSTEXPR int
compare(const char_type* __s1, const char_type* __s2, size_t __n)
{
+ if (__n == 0)
+ return 0;
#if __cplusplus > 201402
if (__builtin_constant_p(__n)
&& __constant_char_array_p(__s1, __n)
&& __constant_char_array_p(__s2, __n))
return __gnu_cxx::char_traits<char_type>::compare(__s1, __s2, __n);
#endif
- if (__n == 0)
- return 0;
return __builtin_memcmp(__s1, __s2, __n);
}
(and similarly in char_traits<char>::find and char_traits<wchar_t>).
It doesn't currently fail on trunk, because we use
__builtin_is_constant_evaluated now instead of the __builtin_constant_p checks,
but the bug is still present.
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Fri, 22 Feb 2019 02:05:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-22
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Subject: [Bug c++/88869] [7/8 Regression] ICE (Segmentation Fault) when using lambda
Date: Fri, 22 Feb 2019 02:08:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE |[7/8 Regression] ICE
|(Segmentation Fault) when |(Segmentation Fault) when
|using lambda |using lambda
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/88869] [7/8/9 Regression] ICE (Segmentation Fault) when using lambda
Date: Fri, 22 Feb 2019 02:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88869
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 22 02:08:05 2019
New Revision: 269093
URL: https://gcc.gnu.org/viewcvs?rev=269093&root=gcc&view=rev
Log:
PR c++/88869 - C++17 ICE with CTAD and explicit specialization.
The members of an explicit specialization of a class template don't have the
template parameters of that class template, so we shouldn't try to provide
arguments for them. Only set outer_args when the class is an instantiation.
* pt.c (do_class_deduction): Don't include explicit specialization
args in outer_args.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction63.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug target/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 02:41:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ams at gcc dot gnu.org,
| |hjl.tools at gmail dot com,
| |jh at suse dot cz, mjambor at suse dot cz
Summary|[8 regression] |[9 regression]
|_mm512_maskz_loadu_pd |_mm512_maskz_loadu_pd
|"forgets" to use the mask |"forgets" to use the mask
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r264688.
>From gcc-bugs-return-634600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 02:46:20 2019
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Subject: [Bug c++/88183] [8/9 Regression] Fold expression with operator .* inside an polymorphic lambda
Date: Fri, 22 Feb 2019 02:46:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Reduced:
struct A { int i; };
template <class T> T g(T);
template <class U, class... Vs>
void f(U u, Vs... vs)
{
[vs...](auto x) {
(g(x) .* ... .* vs) = 42;
}(u);
}
int main()
{
f(A(), &A::i);
}
Basically, the problem is that fold-expressions don't currently support partial
instantiation like that done by tsubst_lambda_expr.
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Subject: [Bug c++/88394] [8 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
Date: Fri, 22 Feb 2019 02:48:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] g++ ICE |[8 Regression] g++ ICE
|(Segmentation fault) in |(Segmentation fault) in
|insert_capture_proxy |insert_capture_proxy
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/88394] [8/9 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
Date: Fri, 22 Feb 2019 02:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88394
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 22 02:47:33 2019
New Revision: 269094
URL: https://gcc.gnu.org/viewcvs?rev=269094&root=gcc&view=rev
Log:
PR c++/88394 - ICE with VLA init-capture.
We mostly use is_normal_capture_proxy to decide whether or not to use
DECL_CAPTURED_VARIABLE; we could just check whether it's set. VLA capture
is still mostly broken, but this fixes this ICE.
* lambda.c (is_normal_capture_proxy): Check DECL_CAPTURED_VARIABLE.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-init-vla1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
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Subject: [Bug c++/88394] [8 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
Date: Fri, 22 Feb 2019 02:48:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] g++ ICE |[8 Regression] g++ ICE
|(Segmentation fault) in |(Segmentation fault) in
|insert_capture_proxy |insert_capture_proxy
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 22 02:47:33 2019
New Revision: 269094
URL: https://gcc.gnu.org/viewcvs?rev=269094&root=gcc&view=rev
Log:
PR c++/88394 - ICE with VLA init-capture.
We mostly use is_normal_capture_proxy to decide whether or not to use
DECL_CAPTURED_VARIABLE; we could just check whether it's set. VLA capture
is still mostly broken, but this fixes this ICE.
* lambda.c (is_normal_capture_proxy): Check DECL_CAPTURED_VARIABLE.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-init-vla1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/87685] [8/9 Regression] Calling a static method from inside a generic lambda requires to capture 'this'
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-634605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 03:35:55 2019
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Fri, 22 Feb 2019 03:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89430
--- Comment #7 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
To avoid "readonly" issue, try this case,
unsigned test(unsigned k, unsigned b) {
unsigned a[2];
if (b < a[k]) {
a[k] = b;
}
return a[0]+a[2];
}
Variable a is local, and it is NOT readonly, so now the following code is
generated,
sub sp, sp, #16
uxtw x0, w0
add x2, sp, 8
ldr w3, [x2, x0, lsl 2]
cmp w3, w1
bls .L2
str w1, [x2, x0, lsl 2]
.L2:
ldr w1, [sp, 8]
ldr w0, [sp, 16]
add sp, sp, 16
add w0, w1, w0
ret
But gcc should generate code below instead,
uxtw x2, w0
add x3, sp, 8
ldr w5, [sp, 16]
ldr w4, [x3, x2, lsl 2]
cmp w4, w1
csel w1, w1, w4, hi
str w1, [x3, x2, lsl 2]
ldr w0, [sp, 8]
add sp, sp, 16
add w0, w0, w5
ret
Any other glass jaw?
>From gcc-bugs-return-634606-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:17:16 2019
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88838] [SVE] Use 32-bit WHILELO in LP64 mode
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kugan at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kugan at gcc dot gnu.org
--- Comment #2 from kugan at gcc dot gnu.org ---
AFIK, we need to:
1. Change the whilelo pattern in backend
2. Change RTL CSE
- Add support for VEC_DUPLICATE
- When handling PARALLEL rtx, we may kill CSE defined in the first set so that
it docent reach
Attached patch fix this. With the patch I now have:
.LFB0:
.cfi_startproc
cmp w3, 0
ble .L1
sub w4, w3, #1
cntw x3
lsr w4, w4, 1
add w4, w4, 1
whilelo p0.s, xzr, x4
.p2align 3,,7
.L3:
ld2w {z4.s - z5.s}, p0/z, [x1]
ld2w {z2.s - z3.s}, p0/z, [x2]
add z0.s, z4.s, z2.s
sub z1.s, z5.s, z3.s
st2w {z0.s - z1.s}, p0, [x0]
incb x1, all, mul #2
whilelo p0.s, x3, x4
incb x0, all, mul #2
incw x3
incb x2, all, mul #2
bne .L3
.L1:
ret
.cfi_endproc
>From gcc-bugs-return-634607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:18:17 2019
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Subject: [Bug target/88838] [SVE] Use 32-bit WHILELO in LP64 mode
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--- Comment #3 from kugan at gcc dot gnu.org ---
Created attachment 45794
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45794&action=edit
RFC patch
>From gcc-bugs-return-634608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:22:13 2019
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Subject: [Bug target/88838] [SVE] Use 32-bit WHILELO in LP64 mode
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--- Comment #4 from kugan at gcc dot gnu.org ---
sorry wr(In reply to kugan from comment #3)
> Created attachment 45794 [details]
> RFC patch
Oops wrong place, it should be for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88836
>From gcc-bugs-return-634609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:23:44 2019
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Subject: [Bug target/88836] [SVE] Redundant PTEST in loop test
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--- Comment #2 from kugan at gcc dot gnu.org ---
Created attachment 45795
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45795&action=edit
RFC patch
AFIK, we need to:
1. Change the whilelo pattern in backend
2. Change RTL CSE
- Add support for VEC_DUPLICATE
- When handling PARALLEL rtx, we may kill CSE defined in the first set so that
it docent reach
Attached patch fix this. With the patch I now have:
.LFB0:
.cfi_startproc
cmp w3, 0
ble .L1
sub w4, w3, #1
cntw x3
lsr w4, w4, 1
add w4, w4, 1
whilelo p0.s, xzr, x4
.p2align 3,,7
.L3:
ld2w {z4.s - z5.s}, p0/z, [x1]
ld2w {z2.s - z3.s}, p0/z, [x2]
add z0.s, z4.s, z2.s
sub z1.s, z5.s, z3.s
st2w {z0.s - z1.s}, p0, [x0]
incb x1, all, mul #2
whilelo p0.s, x3, x4
incb x0, all, mul #2
incw x3
incb x2, all, mul #2
bne .L3
.L1:
ret
.cfi_endproc
>From gcc-bugs-return-634610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:44:16 2019
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
Date: Fri, 22 Feb 2019 05:44:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Ian Lance Taylor <ian at airs dot com> ---
I don't see any more of these when testing on x86_64-pc-linux-gnu, but then I
never saw anything like /tmp/200483472. If you still see them with current
trunk, give me details like the platform, what is in the directory, and whether
there are any failing tests. Thanks.
>From gcc-bugs-return-634611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 05:52:11 2019
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Subject: [Bug c++/86969] [8/9 Regression] ICE (in tsubst_copy) for a generic recursive lambda
Date: Fri, 22 Feb 2019 05:52:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jason at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
>From gcc-bugs-return-634612-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 06:49:02 2019
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Subject: [Bug c++/87685] [8/9 Regression] Calling a static method from inside a generic lambda requires to capture 'this'
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87685
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 22 06:47:37 2019
New Revision: 269095
URL: https://gcc.gnu.org/viewcvs?rev=269095&root=gcc&view=rev
Log:
PR c++/87685 - generic lambda 'this' capture error.
The standard says that in a generic lambda we should speculatively capture
'this' if we see a call to an overload set that contains a non-static member
function, but it seems wrong to reject the program if we can't capture,
since it might not actually be needed.
* lambda.c (lambda_expr_this_capture): Change add_capture_p to int.
(maybe_generic_this_capture): Pass -1.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-this3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/lambda.c
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Fri, 22 Feb 2019 07:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/89444] [9 Regression] r264052 removed PTA_AES from PTA_SKYLAKE/PTA_GOLDMONT
Date: Fri, 22 Feb 2019 07:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 07:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Keywords| |wrong-code
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Subject: [Bug debug/86964] [7/8/9 Regression] Too many debug symbols included, especially for extern globals
Date: Fri, 22 Feb 2019 07:57:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.9.4
Target Milestone|--- |7.5
Summary|[ 7/8/9 Regression ] Too |[7/8/9 Regression] Too many
|many debug symbols |debug symbols included,
|included, especially for |especially for extern
|extern globals |globals
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Subject: [Bug tree-optimization/89440] [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Fri, 22 Feb 2019 07:58:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|c |tree-optimization
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
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Subject: [Bug tree-optimization/89439] [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:268
Date: Fri, 22 Feb 2019 08:00:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
Component|c |tree-optimization
Known to work| |6.5.0
Target Milestone|--- |7.5
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug d/89177] unaligned memory access in libphobos
Date: Fri, 22 Feb 2019 08:02:00 -0000
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--- Comment #5 from Johannes Pfau <johannespfau at gmail dot com> ---
OK, thanks for testing. I'll post a patch to the ML this evening.
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Subject: [Bug rtl-optimization/89436] [8/9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (during RTL pass: cprop_hardreg: internal compiler error: qsort checking failed)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-checking, wrong-code
CC| |amonakov at gcc dot gnu.org
Component|c |rtl-optimization
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The comparator looks innocous...
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Subject: [Bug c++/89439] [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:268
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89439
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|tree-optimization |c++
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we're inlining a released SSA name:
#2 0x00000000014e8383 in remap_ssa_name (name=<ssa_name 0x7ffff69ed048>,
id=0x7fffffffd6c0) at /space/rguenther/src/svn/trunk2/gcc/tree-inline.c:245
245 new_tree = make_ssa_name (remap_type (TREE_TYPE (name), id));
(gdb) p debug_tree (name)
<ssa_name 0x7ffff69ed048 nothrow
def_stmt
version:10 in-free-list>
$2 = void
from
# VUSE <.MEM_14(D)>
_13 = MEM[(int[0:(sizetype) D.2308][0:(sizetype) D.2307] *)foo.2_12][0]{lb: 0
sz: _6 * 4}[0];
where you can see not properly gimplified VLA stuff and thus missing
DECL_EXPRs.
FE issue.
;; Function void f2(int) (null)
;; enabled by -tree-original
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (res = (*(((sizetype) (SAVE_EXPR <(ssizetype) b + -1>) + 1) *
((sizetype) (SAVE_EXPR <(ssizetype) arg + -1>) + 1);, (int[0:(sizetype)
(SAVE_EXPR <(ssizetype) arg + -1>)][0:(sizetype) (SAVE_EXPR <(ssizetype) b +
-1>)] *) foo;))[0][0]) >>>>>;
nowhere is the VLA type we cast to instantiated.
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Subject: [Bug target/89444] [9 Regression] r264052 removed PTA_AES from PTA_SKYLAKE/PTA_GOLDMONT
Date: Fri, 22 Feb 2019 08:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89444
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Sorry for breakage and thanks for the patch.
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Subject: [Bug tree-optimization/89440] [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Fri, 22 Feb 2019 08:32:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, I believe we can simply remove the assert since for nested cycles we can
handle this just fine. With integers we get
t2.c:7:3: missed: inner-loop induction only used outside of the outer
vectorized loop.
t2.c:2:1: missed: not vectorized: relevant phi not supported: a_28 = PHI
<a_29(5), a_10(8)>
which is a missed optimization.
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Subject: [Bug fortran/89431] CPP integer macros not defined
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--- Comment #7 from MarkEggleston <mark.eggleston at codethink dot com> ---
The only reason this PR was raised was because an attempt to use conditional
compilation based on integer kinds failed because the implementation did not
match the documentation.
There is no issue with the existence of __GFC_REAL_10_ and __GFC_REAL_16_.
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 22 08:36:30 2019
New Revision: 269097
URL: https://gcc.gnu.org/viewcvs?rev=269097&root=gcc&view=rev
Log:
2019-02-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/87609
* tree-core.h (tree_base): Document special clique values.
* tree-inline.c (remap_dependence_clique): Do not use the
special clique value of one.
(maybe_set_dependence_info): Use clique one.
(clear_dependence_clique): New callback.
(compute_dependence_clique): Clear clique one from all refs
before assigning it (again).
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-core.h
trunk/gcc/tree-inline.c
trunk/gcc/tree-ssa-structalias.c
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Subject: [Bug tree-optimization/87609] [7/8/9 Regression] miscompilation with restrict and loop
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 22 08:38:14 2019
New Revision: 269098
URL: https://gcc.gnu.org/viewcvs?rev=269098&root=gcc&view=rev
Log:
2019-02-22 Richard Biener <rguenther@suse.de>
PR middle-end/87609
* cfghooks.h (dependence_hash): New typedef.
(struct copy_bb_data): New type.
(cfg_hooks::duplicate_block): Adjust to take a copy_bb_data argument.
(duplicate_block): Likewise.
* cfghooks.c (duplicate_block): Pass down copy_bb_data.
(copy_bbs): Create and pass down copy_bb_data.
* cfgrtl.c (cfg_layout_duplicate_bb): Adjust.
(rtl_duplicate_bb): Likewise.
* tree-cfg.c (gimple_duplicate_bb): If the copy_bb_data arg is not NULL
remap dependence info.
* gcc.dg/torture/restrict-7.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/restrict-7.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfghooks.c
trunk/gcc/cfghooks.h
trunk/gcc/cfgrtl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-cfg.c
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Subject: [Bug tree-optimization/87609] [7/8 Regression] miscompilation with restrict and loop
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] |[7/8 Regression]
|miscompilation with |miscompilation with
|restrict and loop |restrict and loop
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug rtl-optimization/89436] [8/9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (during RTL pass: cprop_hardreg: internal compiler error: qsort checking failed)
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--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
This was previously reported as PR 86096. Let me copy-paste my response from
there:
df_mw_compare has:
if (mw1->mw_reg != mw2->mw_reg)
return mw1->mw_order - mw2->mw_order;
Note mw_reg in the 'if' vs mw_order in the 'return'. This is invalid.
It's simpler and more efficient to just use mw_order as the last tie-breaker
regardless of mw_reg value.
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Franz Sirl from comment #3)
> Created attachment 43650 [details]
> another testcase
>
> On x86_64-linux, when compiled with "gcc-7 -O2 -fsanitize=address" this
> testcase prints nothing. With "gcc-7 -O2 -fsanitize=address
> -fsanitize=undefined" this slightly confusing message is output:
>
> test-asan1.c:36:29: runtime error: load of address 0x000000602660 with
> insufficient space for an object of type 'inttype'
> 0x000000602660: note: pointer points here
> 0c 00 00 00 80 20 60 00 00 00 00 00 28 00 00 00 00 00 00 00 60 00 00 00
> 00 00 00 00 80 0c 40 00
> ^
> test-asan1.c:36:29: runtime error: store to address 0x000000602660 with
> insufficient space for an object of type 'inttype'
> 0x000000602660: note: pointer points here
> 0c 00 00 00 80 20 60 00 00 00 00 00 28 00 00 00 00 00 00 00 60 00 00 00
> 00 00 00 00 80 0c 40 00
> ^
This is a different story and properly caught by UBSAN.
>From gcc-bugs-return-634630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:25:26 2019
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Subject: [Bug rtl-optimization/89436] [8/9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (during RTL pass: cprop_hardreg: internal compiler error: qsort checking failed)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
duplicate then.
*** This bug has been marked as a duplicate of bug 86096 ***
>From gcc-bugs-return-634631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:25:27 2019
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Subject: [Bug rtl-optimization/86096] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 0)
Date: Fri, 22 Feb 2019 09:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |przemyslaw.wirkus at arm dot com
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89436 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-634632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:26:04 2019
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Subject: [Bug rtl-optimization/86096] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 0)
Date: Fri, 22 Feb 2019 09:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |ice-on-valid-code
Priority|P3 |P2
Version|unknown |9.0
Target Milestone|--- |8.3
Summary|ICE: qsort checking failed |[8/9 Regression] ICE: qsort
|(error: qsort comparator |checking failed (error:
|non-negative on sorted |qsort comparator
|output: 0) |non-negative on sorted
| |output: 0)
>From gcc-bugs-return-634633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:34:53 2019
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Subject: [Bug go/89447] New: libgo largefile support is incomplete and inconsistent
Date: Fri, 22 Feb 2019 09:34:00 -0000
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Bug ID: 89447
Summary: libgo largefile support is incomplete and inconsistent
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ro at gcc dot gnu.org
CC: cmang at google dot com
Target Milestone: ---
Target: *-*-solaris2.*
When investigating the remaining libgo testsuite failures on Solaris, I came
across a group with a common root cause. E.g.
--- FAIL: TestSharedLibName (0.00s)
build_test.go:182: not owner
build_test.go:182: not owner
FAIL
/vol/gcc/src/hg/trunk/local/libgo/testsuite/gotest[685]: wait: 8433: Terminated
FAIL: cmd/go/internal/work
The failure is from a call to os.RemoveAll. It turns out that removeAllFrom
returns early because statInfo.Mode&syscall.S_IFMT != syscall.S_IFDIR which is
weird given that tmpGopath *is* a directory.
I find that fstatat is called
Thread 15 hit Breakpoint 1, 0xfdb71b7c in fstatat () from /lib/libc.so.1
(gdb) where
#0 0xfdb71b7c in fstatat () from /lib/libc.so.1
#1 0xfe7c2da8 in internal..z2fsyscall..z2funix.Fstatat (dirfd=dirfd@entry=3,
path=..., stat=stat@entry=0x6ca280, flags=flags@entry=4096)
at /vol/gcc/src/hg/trunk/local/libgo/go/internal/syscall/unix/at.go:70
#2 0xfe947680 in os.removeAllFrom (parent=parent@entry=0xd050060, path=...)
at /vol/gcc/src/hg/trunk/local/libgo/go/os/removeall_at.go:66
#3 0xfe947e04 in os.RemoveAll (
path=<error reading variable: Cannot access memory at address 0x5>)
at /vol/gcc/src/hg/trunk/local/libgo/go/os/removeall_at.go:48
which seems broken: given that this is a 32-bit program and sysinfo.go was
built with -D_FILE_OFFSET_BITS=64 (and thus the struct that is passed in is
actually struct stat64), this should be a call to fstatat64 instead.
And indeed the contents of Stat_t is off:
$4 = {Dev = 4292345858, st_pad1 = {0, 0, 0}, Ino = 2669371652487266752,
Mode = 3, Nlink = 2110, Uid = 1004, Gid = 4294967295, Rdev = 0, st_pad2 = {
0, 177}, Size = 6660097377203678494, Atim = {Sec = 1550674759,
Nsec = 566076105}, Mtim = {Sec = 1550674759, Nsec = 566076105}, Ctim = {
Sec = 8192, Nsec = 16}, Blksize = 1953329254, Blocks = 0,
st_fstype = '\000' <repeats 15 times>, st_pad4 = {0, 0, 0, 0, 0, 0, 0, 0}}
with Mode = 3 and Nlink = 2110 (which is really Uid!).
It turns out that there are more instances of the same problem: looking for
references to functions that have unused largefile equivalents in libc, I found
creat, getdents, mmap, openat, sendfile, and mkstemp (x86 only).
The attached initial patch fixes many of those by adding largefile equivalents.
Afterwards, only calls to mmap (from closures.o, i.e. libffi_convenience.a
and mem_gccgo.go) and mkstemp (again from closures.o) are left. ISTM that they
are ok, given that they don't use the Offset_t etc. types from sysinfo.go, but
the underlying 32-bit ones. With the exception of getdents (which is
Solaris-specific
anyway), all those largefile functions are present on Linux, too, but I suspect
the build tags aren't right yet.
Bootstrapped on i386-pc-solaris2.11, sparc-sun-solaris2.11, and
x86_64-pc-linux-gnu (both multilibs each). No regressions on Linux/x86_64
and many related testsuite failures in both libgo and gotools are gone on
Solaris.
>From gcc-bugs-return-634634-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:35:39 2019
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Subject: [Bug rtl-optimization/86096] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 0)
Date: Fri, 22 Feb 2019 09:35:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #1)
> df_mw_compare has:
>
> if (mw1->mw_reg != mw2->mw_reg)
> return mw1->mw_order - mw2->mw_order;
>
> Note mw_reg in the 'if' vs mw_order in the 'return'. This is invalid.
>
> It's simpler and more efficient to just use mw_order as the last tie-breaker
> regardless of mw_reg value.
patch is pre-approved
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Subject: [Bug go/89447] libgo largefile support is incomplete and inconsistent
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--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 45796
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45796&action=edit
Initial patch
>From gcc-bugs-return-634636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:36:28 2019
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug c/89448] New: Failure to generate diagnostic for "complex int" (OK for "_Complex int")
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89448
Bug ID: 89448
Summary: Failure to generate diagnostic for "complex int" (OK
for "_Complex int")
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mrison at hotmail dot com
Target Milestone: ---
$ cat complex.c
#include <complex.h>
int lower (void)
{
complex int a = 0;
return creal (a);
}
int upperunder (void)
{
_Complex int a = 0;
return creal (a);
}
int redef (void)
{
#undef complex
#define complex _Complex
complex int a = 0;
return creal (a);
}
$ gcc -std=c99 -pedantic -c complex.c
complex.c: In function ‘upperunder’:
complex.c:9:3: warning: ISO C does not support complex integer types
[-Wpedantic]
_Complex int a = 0;
^~~~~~~~
complex.c: In function ‘redef’:
complex.c:15:17: warning: ISO C does not support complex integer types
[-Wpedantic]
#define complex _Complex
^
complex.c:16:3: note: in expansion of macro ‘complex’
complex int a = 0;
^~~~~~~
$
Why no diagnostic in lower() but yes in redef()? Sounds as if the
"complex" from <complex.h> is not just "_Complex".
The preprocessed form just further confuses the matter, because (as expected)
"complex" does appear to be just "_Complex":
# 2 "complex.c"
int lower (void)
{
# 4 "complex.c" 3 4
_Complex
# 4 "complex.c"
int a = 0;
return creal (a);
}
I am using gcc from Ubuntu 18.04:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
7.3.0-27ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
Thanks,
Mark
>From gcc-bugs-return-634638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:41:45 2019
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Subject: [Bug go/89447] libgo largefile support is incomplete and inconsistent
Date: Fri, 22 Feb 2019 09:41:00 -0000
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--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
FWIW, after this patch and
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01815.html
only the runtime failures mentioned there and go/build (which times out
after 4 minutes, just as it does on Linux/x86_64 for me) remain on
Solaris/x86.
There are some more on Solaris/SPARC, though, but overall it's not too
bad either (32 and 64-bit):
=== libgo Summary ===
# of expected passes 352
# of unexpected failures 18
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Subject: [Bug go/89447] libgo largefile support is incomplete and inconsistent
Date: Fri, 22 Feb 2019 09:50:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
CC| |ebotcazou at gcc dot gnu.org
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> There are some more on Solaris/SPARC, though, but overall it's not too
> bad either (32 and 64-bit):
>
> === libgo Summary ===
>
> # of expected passes 352
> # of unexpected failures 18
Do you have https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01332.html too?
>From gcc-bugs-return-634640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:55:29 2019
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Subject: [Bug go/89447] libgo largefile support is incomplete and inconsistent
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--- Comment #4 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
[...]
> Do you have https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01332.html too?
I have a similar patch from Ian, otherwise results are way worse.
>From gcc-bugs-return-634641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 09:59:48 2019
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #16 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45797
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45797&action=edit
Patch candidate
Patch candidate where I made some refactoring and come up with tests.
Works fine on x86_64, on ppc64le there are some issues with -fsection-anchors,
but that would be possible to resolve.
Please let me know if you're fine with that and we can submit that to
gcc-patches ML?
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #17 from Martin Liška <marxin at gcc dot gnu.org> ---
> 2. What should we do with sections like .data.rel.ro, .data.rel.ro.local?
> They suffer from this bug too, but it's not that easy to put globals there,
> as you must set various attributes onto decl to ensure it will receive the
> right reloc value.
Answer for this would be that we probably can't do that with approach #2 (as
defined in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1). Btw. how can
one hit an invalid memory in .data.rel.ro (or .data.rel.ro.local)?
>From gcc-bugs-return-634643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 10:23:12 2019
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Subject: [Bug testsuite/89441] FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for excess errors)
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Mine, patch has been just sent:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01818.html
>From gcc-bugs-return-634644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 10:31:41 2019
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Subject: [Bug c/89449] New: False -Wsuggest-attribute=format warning
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Bug ID: 89449
Summary: False -Wsuggest-attribute=format warning
Product: gcc
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This is a false positive as one can't actually put format attribute on the
function:
$ cat valist.c
#include <stdarg.h>
void logv(const char *format, va_list list) {
__builtin_vprintf (format, list);
}
void
__attribute__ ((format (printf, 1, 2)))
logv2 (const char *format, va_list list)
{
__builtin_vprintf (format, list);
}
$ g++ valist.c -c -Wsuggest-attribute=format
valist.c: In function ‘void logv(const char*, __va_list_tag*)’:
valist.c:4:33: warning: function ‘void logv(const char*, __va_list_tag*)’ might
be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
4 | __builtin_vprintf (format, list);
| ^
valist.c: At global scope:
valist.c:9:40: error: ‘format’ attribute argument 3 value ‘2’ does not refer to
a variable argument list
9 | logv2 (const char *format, va_list list)
| ^
valist.c: In function ‘void logv2(const char*, __va_list_tag*)’:
valist.c:11:33: warning: function ‘void logv2(const char*, __va_list_tag*)’
might be a candidate for ‘gnu_printf’ format attribute
[-Wsuggest-attribute=format]
11 | __builtin_vprintf (format, list);
| ^
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Subject: [Bug ipa/78027] [6 Regression] ICE in new_oacc_loop_routine, at omp-low.c:19000
Date: Fri, 22 Feb 2019 10:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78027
--- Comment #11 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Fri Feb 22 10:50:02 2019
New Revision: 269103
URL: https://gcc.gnu.org/viewcvs?rev=269103&root=gcc&view=rev
Log:
Silence '-Whsa' diagnostic in 'gfortran.dg/goacc/pr78027.f90'
... which has been present (with HSA offloading configured) ever since this
test case got added.
gcc/testsuite/
PR fortran/78027
* gfortran.dg/goacc/pr78027.f90: Add 'dg-additional-options
"-Wno-hsa"'.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/pr78027.f90
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Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
Date: Fri, 22 Feb 2019 10:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
--- Comment #8 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Fri Feb 22 10:50:35 2019
New Revision: 269105
URL: https://gcc.gnu.org/viewcvs?rev=269105&root=gcc&view=rev
Log:
[PR72741] Use 'oacc_build_routine_dims' for Fortran OpenACC 'routine'
directives, too
... instead of having an incomplete local implementation.
With these changes in place, we can then also revert the work-around r267213
"[nvptx] Unify C/Fortran routine handling in nvptx_goacc_validate_dims".
gcc/fortran/
PR fortran/72741
* gfortran.h (oacc_routine_lop): New enum.
(symbol_attribute): Use it.
* openmp.c (gfc_oacc_routine_dims): Replace with...
(gfc_oacc_routine_lop): ... this new function.
(gfc_match_oacc_routine): Adjust.
* trans-decl.c (add_attributes_to_decl): Likewise.
gcc/
PR fortran/72741
* omp-general.c (oacc_replace_fn_attrib): Mostly split out into...
(oacc_replace_fn_attrib_attr): ... this new function.
* omp-general.h (oacc_replace_fn_attrib_attr): New prototype.
* config/nvptx/nvptx.c (nvptx_goacc_validate_dims_1): Revert
workaround.
gcc/testsuite/
PR fortran/72741
* gfortran.dg/goacc/classify-routine.f95: Adjust.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/nvptx/nvptx.c
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/openmp.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/omp-general.c
trunk/gcc/omp-general.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/classify-routine.f95
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Subject: [Bug tree-optimization/89440] [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Fri, 22 Feb 2019 10:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89440
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89440] [9 Regression] ICE in vect_create_epilog_for_reduction, at tree-vect-loop.c:5502
Date: Fri, 22 Feb 2019 10:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89440
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 22 10:52:49 2019
New Revision: 269111
URL: https://gcc.gnu.org/viewcvs?rev=269111&root=gcc&view=rev
Log:
2019-02-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/89440
* tree-vect-loop.c (vect_create_epilog_for_reduction): Remove
not necessary assert.
* gcc.dg/vect/pr89440.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr89440.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89450] New: RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 10:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89450
Bug ID: 89450
Summary: RFC: Strengthen -fstrict-enums
Product: gcc
Version: unknown
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Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Currently, we warn about:
$ cat /tmp/strict.cc
enum XXX
{
A,
B,
C,
D,
E
};
int foo(XXX x)
{
switch (x)
case A:
case B:
case C:
case D:
case E:
return 2;
}
int main(int argc, char **argv)
{
return foo ((XXX)argc);
}
$ g++ /tmp/strict.cc -c -fstrict-enums
/tmp/strict.cc: In function ‘int foo(XXX)’:
/tmp/strict.cc:19:1: warning: control reaches end of non-void function
[-Wreturn-type]
19 | }
| ^
Issues is that:
14746 /* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
14747 if (flag_strict_enums)
14748 set_min_and_max_values_for_integral_type (enumtype, precision,
sgn);
is called for precision, which sets min = 0 and max = 7.
What about doing:
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 612afbacd27..46302b4a61d 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -14745,7 +14745,10 @@ finish_enum_value_list (tree enumtype)
/* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
if (flag_strict_enums)
- set_min_and_max_values_for_integral_type (enumtype, precision, sgn);
+ {
+ TYPE_MIN_VALUE (enumtype) = minnode;
+ TYPE_MAX_VALUE (enumtype) = maxnode;
+ }
}
else
underlying_type = ENUM_UNDERLYING_TYPE (enumtype);
I can also imagine another option level when desired.
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 10:57:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
CC| |jason at gcc dot gnu.org,
| |jwakely at redhat dot com
Ever confirmed|0 |1
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89451] New: [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Fri, 22 Feb 2019 11:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89451
Bug ID: 89451
Summary: [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O
(internal compiler error)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Building today's trunk on x86_64-linux-gnu (Ubuntu 18.10), I see the following
failure in the gfortran testsuite:
FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
FAIL: gfortran.dg/pr79315.f90 -O (test for excess errors)
The backtrace for the ICE looks like this:
$ gfortran-9 pr79315.f90 -Ofast -ftree-parallelize-loops=4
during GIMPLE pass: ifcvt
pr79315.f90:37:0:
37 | do i = its, ite
|
internal compiler error: in gimple_duplicate_bb, at tree-cfg.c:6255
0x5b4a92 gimple_duplicate_bb
/home/janus/github/gcc/trunk/gcc/tree-cfg.c:6255
0x7845f2 duplicate_block(basic_block_def*, edge_def*, basic_block_def*,
copy_bb_data*)
/home/janus/github/gcc/trunk/gcc/cfghooks.c:1085
0x785774 copy_bbs(basic_block_def**, unsigned int, basic_block_def**,
edge_def**, unsigned int, edge_def**, loop*, basic_block_def*, bool)
/home/janus/github/gcc/trunk/gcc/cfghooks.c:1353
0x790d6f duplicate_loop_to_header_edge(loop*, edge_def*, unsigned int,
simple_bitmap_def*, edge_def*, vec<edge_def*, va_heap, vl_ptr>*, int)
/home/janus/github/gcc/trunk/gcc/cfgloopmanip.c:1296
0xc54768 gimple_duplicate_loop_to_header_edge(loop*, edge_def*, unsigned int,
simple_bitmap_def*, edge_def*, vec<edge_def*, va_heap, vl_ptr>*, int)
/home/janus/github/gcc/trunk/gcc/tree-ssa-loop-manip.c:921
0x793e1c loop_version(loop*, void*, basic_block_def**, profile_probability,
profile_probability, profile_probability, profile_probability, bool)
/home/janus/github/gcc/trunk/gcc/cfgloopmanip.c:1696
0xb90eb9 version_loop_for_if_conversion
/home/janus/github/gcc/trunk/gcc/tree-if-conv.c:2746
0xb978a7 tree_if_conversion(loop*, vec<gimple*, va_heap, vl_ptr>*)
/home/janus/github/gcc/trunk/gcc/tree-if-conv.c:3033
0xb98929 execute
/home/janus/github/gcc/trunk/gcc/tree-if-conv.c:3150
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 11:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89450
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Well the documentation says this:
basically, a value that can be represented in the minimum number of bits needed
to represent all the enumerators
So if we are going to change the definition of -fstrict-enum, this would be a
very visiable change and even a difference from the documentation from previous
versions.
I would think we should not change it as it is documented exactly this way.
>From gcc-bugs-return-634653-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:27:04 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Fri, 22 Feb 2019 11:27:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
CC| |rguenther at suse dot de
Known to work| |8.2.0
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=79315
Known to fail| |9.0
--- Comment #1 from janus at gcc dot gnu.org ---
The test case itself is more than two years old (r245089). I haven't checked
when it started failing.
In any case, the ICE does not occur with gfortran 8.2.0, and I'm pretty sure it
was not present on trunk in December.
>From gcc-bugs-return-634654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:34:17 2019
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Subject: [Bug c/89449] False -Wsuggest-attribute=format warning
Date: Fri, 22 Feb 2019 11:34:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Use 0 instead of 2 as documented.
0 means it can't check the list.
>From gcc-bugs-return-634655-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:37:53 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Fri, 22 Feb 2019 11:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hum, I can't reproduce the failure, but yes, the assert is new. But I spotted
an unrelated error in the patch...
>From gcc-bugs-return-634656-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:40:39 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 11:40:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> Well the documentation says this:
> basically, a value that can be represented in the minimum number of bits
> needed to represent all the enumerators
>
> So if we are going to change the definition of -fstrict-enum, this would be
> a very visiable change and even a difference from the documentation from
> previous versions.
>
> I would think we should not change it as it is documented exactly this way.
Yep, I would preserve the current behavior. So having -fstrict-enum=[12], where
=1 will be current definition and =2 the strengthen one, should work
>From gcc-bugs-return-634657-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:42:09 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Fri, 22 Feb 2019 11:42:00 -0000
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--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to janus from comment #1)
> In any case, the ICE does not occur with gfortran 8.2.0, and I'm pretty sure
> it was not present on trunk in December.
More specifically, I think it must have appeared after 2019-01-08.
>From gcc-bugs-return-634658-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:42:40 2019
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Subject: [Bug c/89449] False -Wsuggest-attribute=format warning
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Grrr, shame on me :P RTFM rules
>From gcc-bugs-return-634659-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 11:44:04 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Fri, 22 Feb 2019 11:44:00 -0000
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--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> ---
nOn Fri, 22 Feb 2019, janus at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89451
>
> --- Comment #3 from janus at gcc dot gnu.org ---
> (In reply to janus from comment #1)
> > In any case, the ICE does not occur with gfortran 8.2.0, and I'm pretty sure
> > it was not present on trunk in December.
>
> More specifically, I think it must have appeared after 2019-01-08.
The assert was added with
2019-02-22 Richard Biener <rguenther@suse.de>
PR middle-end/87609
* cfghooks.h (dependence_hash): New typedef.
(struct copy_bb_data): New type.
(cfg_hooks::duplicate_block): Adjust to take a copy_bb_data
argument.
(duplicate_block): Likewise.
* cfghooks.c (duplicate_block): Pass down copy_bb_data.
(copy_bbs): Create and pass down copy_bb_data.
* cfgrtl.c (cfg_layout_duplicate_bb): Adjust.
(rtl_duplicate_bb): Likewise.
* tree-cfg.c (gimple_duplicate_bb): If the copy_bb_data arg is not
NULL
remap dependence info.
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89280
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45783|0 |1
is obsolete| |
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45798
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45798&action=edit
gcc9-pr89280.patch
Updated patch. The previous patch completely broke
__builtin_setjmp_{setup,receiver} handling, where the latter is normally only
reachable through EDGE_ABNORMAL edge. We need to make those visited if the
corresponding __builtin_setjmp_setup is visited.
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Subject: [Bug c/89448] Failure to generate diagnostic for "complex int" (OK for "_Complex int")
Date: Fri, 22 Feb 2019 11:50:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Because 'complex' is from a system header probably ...
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 11:52:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Indeed, at least we shouldn't change the middle-end representation. The FE can
of course warn more strictly if the language allows.
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 22 Feb 2019 11:54:00 -0000
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--- Comment #30 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #29)
> Ramana, any progress on this?
I'm still trying to get the various spec files and the t-multilib bits sorted
and half-term has intervened here in the UK.
>From gcc-bugs-return-634664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 12:13:41 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89449] False -Wsuggest-attribute=format warning
Date: Fri, 22 Feb 2019 12:13:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Just for reference:
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Common-Function-Attributes.html#Common-Function-Attributes
:
For functions where the arguments are not available to be checked (such as
vprintf), specify the third parameter as zero. In this case the compiler only
checks the format string for consistency.
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89444] [9 Regression] r264052 removed PTA_AES from PTA_SKYLAKE/PTA_GOLDMONT
Date: Fri, 22 Feb 2019 12:49:00 -0000
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--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Feb 22 12:49:21 2019
New Revision: 269114
URL: https://gcc.gnu.org/viewcvs?rev=269114&root=gcc&view=rev
Log:
x86: (Reapply) Move AESNI generation to Skylake and Goldmont
This is a repeat of commit r263989, which commit r264052 accidentally
reverted.
2019-02-22 Thiago Macieira <thiago.macieira@intel.com>
PR target/89444
* config/i386/i386.h (PTA_WESTMERE): Remove PTA_AES.
(PTA_SKYLAKE): Add PTA_AES.
(PTA_GOLDMONT): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.h
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
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--- Comment #5 from janus at gcc dot gnu.org ---
Ah, yes, the ICE was obviously introduced with r269098.
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From: "nknikita at niisi dot ras.ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89452] New: basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
Date: Fri, 22 Feb 2019 13:01:00 -0000
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Bug ID: 89452
Summary: basic_stringbuf::seekoff and basic_stringbuf::seekpos
implementations
Product: gcc
Version: 7.4.0
Status: UNCONFIRMED
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It seems that basic_stringbuf::seekoff and basic_stringbuf::seekpos
implementations are inconsistent with the requirements of the standard.
As far as I can see, the standard ensures the execution of the following code
will not be terminated:
std::stringbuf sb("abcdefgh", std::ios_base::in);
assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
According to ISO/IEC 14882:2017(E):
1. basic_streambuf::pubseekpos calls seekpos member function of the most
derived class, i.e., basic_stringbuf::seekpos.
2. basic_stringbuf::seekpos (3, std::ios_base::in | std::ios_base::out)
effectively calls basic_stringbuf::seekoff (3, std::ios_bas::beg,
std::ios_base::in | std::ios_base::out).
3. basic_stringbuf::seekoff identifies what sequences should be positioned.
Since std::ios_base::in | std::ios_base::out is passed as which and
ios_base::beg is passed as way, both the input and the output sequences should
be affected ([stringbuf.virtuals]/9).
4. pptr() is a null pointer. Paragraphs [stringbuf.cons]/3, [streambuf.cons]/1,
[stringbuf. members]/3 guarantee it.
5. [stringbuf.virtuals]/10 specifies that the positioning operation fails,
i.e., pos_type(-1) should be returned.
However, seekoff/seekpos implementations impose some additional requirements
while identifying sequences to be positioned:
bool __testin = (ios_base::in & this->_M_mode & __mode) != 0;
bool __testout = (ios_base::out & this->_M_mode & __mode) != 0;
that is, the openmode is also checked. The input/output sequence therefore will
not be positioned if stringbuf openmode does not include
ios_base::in/ios_base::out. In the example given, the input sequence will be
positioned without an error (an unexpected behavior).
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Subject: [Bug target/89444] [9 Regression] r264052 removed PTA_AES from PTA_SKYLAKE/PTA_GOLDMONT
Date: Fri, 22 Feb 2019 13:26:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Fri, 22 Feb 2019 13:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45790|0 |1
is obsolete| |
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45799
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45799&action=edit
gcc9-pr89434.patch
The previous patch failed bootstrap, hope this one will pass it.
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Subject: [Bug middle-end/85598] [7/8/9 Regression] Incorrect warning only at -O2 and -O3
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--- Comment #23 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Fri Feb 22 13:46:01 2019
New Revision: 269115
URL: https://gcc.gnu.org/viewcvs?rev=269115&root=gcc&view=rev
Log:
PR middle-end/85598
* gimple-ssa-sprintf.c (pass_sprintf_length::execute): Enable loop
analysis for pass.
Added:
trunk/gcc/testsuite/gcc.dg/pr85598.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-sprintf.c
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Not just
while (__i < __n && __builtin_constant_p(__a[__i]))
?
>From gcc-bugs-return-634672-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 14:53:37 2019
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Subject: [Bug c/89449] False -Wsuggest-attribute=format warning
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=28492
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
The location info being bad here is bug 28492
>From gcc-bugs-return-634673-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 14:55:10 2019
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From: "alejandro.martinezvicente at arm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89453] New: Bug parsing "," operator with openmp
Date: Fri, 22 Feb 2019 14:55:00 -0000
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Bug ID: 89453
Summary: Bug parsing "," operator with openmp
Product: gcc
Version: 9.0
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Hi,
This code
void
f (float **a, float **b, int n)
{
int i, j;
#pragma omp for simd
for (i = 0, j = 0; i < n; i++, j++)
{
a[i][j] = b[j][i];
}
}
fails to compile with -fopenmp-simd:
$ gcc -fopenmp-simd -std=c99 -O3 -c -o foo.o test.c
test.c: In function ‘f’:
test.c:7:13: error: expected ‘;’ before ‘,’ token
for (i = 0, j = 0; i < n; i++, j++)
^
test.c:7:32: error: invalid increment expression
for (i = 0, j = 0; i < n; i++, j++)
^
It does compile correctly with "gcc -std=c99 -O3 -c -o foo.o test.c"
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Subject: [Bug fortran/89348] Fortran Command Options documentation fixes
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Fixed by the Paul's patch at
https://gcc.gnu.org/ml/fortran/2019-02/msg00180.html.
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Subject: [Bug regression/81331] [7 Regression] missed Eh delivery in partitioned function
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/83530] [7 Regression] ICE in reset_sched_cycles_in_current_ebb, at sel-sched.c:7150
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/84659] [7 Regression] ICE: Segmentation fault (stack overflow in bb_note) w/ selective scheduling
Date: Fri, 22 Feb 2019 15:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/78496] [7 Regression] Missed opportunities for jump threading
Date: Fri, 22 Feb 2019 15:16:00 -0000
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Subject: [Bug rtl-optimization/83852] [7 Regression] ICE in sel_redirect_edge_and_branch, at sel-sched-ir.c:5644 on 32-bit BE powerpc targets
Date: Fri, 22 Feb 2019 15:16:00 -0000
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Subject: [Bug target/83760] [7 Regression] [SH] ICE in maybe_record_trace_start building glibc tst-copy_file_range.c
Date: Fri, 22 Feb 2019 15:17:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug testsuite/85368] [8 regression] phi-opt-11 test fails on IBM Z
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:19:03 2019
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Subject: [Bug middle-end/84048] [8/9 Regression] FAIL: gcc.dg/torture/tls/run-ld.c -O0 -pie -fPIE execution test
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/86019] [8/9 Regression] Unref implementation using atomic_thread_fence generates worse code on x86-64 in gcc 8.1 than 7.3
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87770] [8 Regression] ICE in type_dependent_expression_p, at cp/pt.c:25230
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/89116] [8/9 Regression] ICE in cfg_layout_redirect_edge_and_branch_force, at cfgrtl.c:4482
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug debug/86549] [8/9 Regression] -flto -g0 vs. -g issues
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/83361] [7 Regression ?] ICE: verify_flow_info failed (error: non-cold basic block 3 reachable only by paths crossing the cold partition) on 32-bit BE powerpc targets
Date: Fri, 22 Feb 2019 15:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug ada/82844] [8/9 Regression] Many ada tests time out on x32
Date: Fri, 22 Feb 2019 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/79166] [ARM] Implement neon_valid_immediate tricks for BYTES_BIG_ENDIAN
Date: Fri, 22 Feb 2019 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/80791] [8/9 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Fri, 22 Feb 2019 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/89057] [8/9 Regression] AArch64 ld3 st4 less optimized
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/87874] [8 Regression] ICE in simplify_subreg, at simplify-rtx.c:6396
Date: Fri, 22 Feb 2019 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/85804] [8/9 Regression][AArch64] Mis-compilation of loop with strided array access and xor reduction
Date: Fri, 22 Feb 2019 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:22:12 2019
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Subject: [Bug tree-optimization/80198] [7/8/9 Regression] does not vectorize generic inplace integer operation
Date: Fri, 22 Feb 2019 15:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:22:40 2019
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #51 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/86259] [8/9 Regression] min(4, strlen(s)) optimized to strlen(s) with -flto
Date: Fri, 22 Feb 2019 15:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #34 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/88273] [8 Regression] warning: 'memcpy' offset [-527, -529] is out of the bounds [0, 16] of object 'vrsave' with type 'union <anonymous>' [-Warray-bounds]
Date: Fri, 22 Feb 2019 15:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86379] [8 Regression] Class member access of |using|'d field goes horribly awry in presence of templates
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/85459] [8/9 Regression] Larger code generated from GMP template meta-programming
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:34 2019
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Subject: [Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/83838] Many gcc.target/i386/indirect-thunk*.c tests FAIL
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/84251] [8/9 Regression] Performance regression in gcc 8/9 when comparing floating point numbers
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:23:09 2019
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Subject: [Bug tree-optimization/85964] [8/9 Regression] compile time hog w/ -O3 -ftracer -fno-guess-branch-probability
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/71596] gcc bootstrap fails due to segv in genrecog
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87513] [8 Regression] ICE in write_expression, at cp/mangle.c:3050
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:28 2019
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Subject: [Bug c++/85046] [8/9 Regression] cp/name-lookup.c:6175:53: runtime error: member access within null pointer of type 'struct cp_binding_level'
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug preprocessor/69543] [7/8/9 Regression] _Pragma does not apply within macro
Date: Fri, 22 Feb 2019 15:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87652] [8 Regression] inner class template of outer class template can't access friend's protected data member
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87748] [8/9 Regression] G++-8 treats SFINAE as error
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:36 2019
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Subject: [Bug target/83267] [8/9 regression] [armeb] gfortran.fortran-torture/execute/scalarize2.f90 fails since r255307
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:45 2019
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Subject: [Bug ada/80590] [8/9 regression] non-bootstrap build failure of Ada runtime
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634710-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:40 2019
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Subject: [Bug middle-end/86827] [8/9 Regression] -Warray-bounds produces negative indicies
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:19:41 2019
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Subject: [Bug target/86589] [8 regression] gcc.target/powerpc/altivec-7-le.c and gcc.target/powerpc/vsx-7-be.c fail starting with r262440
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:26:18 2019
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Subject: [Bug rtl-optimization/86438] [8 Regression] wrong code at -Os
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86969] [8/9 Regression] ICE (in tsubst_copy) for a generic recursive lambda
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/84733] [8/9 Regression] internal compiler error: Segmentation fault (check_local_shadow())
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:27:03 2019
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Subject: [Bug c++/88183] [8/9 Regression] Fold expression with operator .* inside an polymorphic lambda
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug go/84948] [8/9 regression] ICE in set_from, at go/gofrontend/types.cc:2660
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:26:42 2019
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:29:33 2019
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Subject: [Bug c++/85569] [8/9 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/86096] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 0)
Date: Fri, 22 Feb 2019 15:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:25:22 2019
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Subject: [Bug c/88568] [7 Regression] 'dllimport' no longer implies 'extern' in C
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:28:25 2019
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Subject: [Bug tree-optimization/89182] [8 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/84490] [8/9 regression] 436.cactusADM regressed by 6-8% percent with -Ofast on Zen and Haswell, compared to gcc 7.2
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/81018] [8/9 regression] gfortran.dg/graphite/pr14741.f90 FAILs
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug ipa/85103] [8/9 Regression] Performance regressions on SPEC with r257582
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/80511] [8/9 Regression] gcc.dg/Wstrict-overflow-18.c gcc.dg/Wstrict-overflow-7.c gcc.dg/pragma-diag-3.c
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/87273] [8/9 Regression] ICE in merge_fences, at sel-sched-ir.c:708
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:23:19 2019
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Subject: [Bug middle-end/87489] [8/9 Regression] Spurious -Wnonnull warning
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:31:49 2019
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Subject: [Bug c++/87322] [8 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:33:24 2019
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Subject: [Bug debug/86593] [8 Regression] internal compiler error: in based_loc_descr, at dwarf2out.c:14272
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/83851] [8/9 regression] gcc.dg/vect/pr53185-2.c fails on armeb after r256634
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:32:59 2019
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Subject: [Bug c++/89419] [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/84135] [8/9 Regression] ICE in gfc_trans_array_cobounds, at fortran/trans-array.c:6033
Date: Fri, 22 Feb 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634741-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:33:43 2019
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Subject: [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness
Date: Fri, 22 Feb 2019 15:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:13 2019
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Subject: [Bug tree-optimization/78972] [7/8/9 Regression] poor x86 simd instruction scheduling
Date: Fri, 22 Feb 2019 15:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:23 2019
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Subject: [Bug c++/87015] [8/9 Regression] miscompilation of template heavy Boost Spirit code
Date: Fri, 22 Feb 2019 15:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:28:40 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
Date: Fri, 22 Feb 2019 15:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634752-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:35:34 2019
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Subject: [Bug c++/88123] [8/9 Regression] faulty qualified name lookup of overloaded operator within generic lambda via using-directive
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:35:27 2019
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Subject: [Bug target/87007] [8/9 Regression] 10% slowdown with -march=skylake-avx512
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:00 2019
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Subject: [Bug tree-optimization/83403] Missed register promotion opportunities in loop
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/82407] [meta-bug] qsort_chk fallout tracking
Date: Fri, 22 Feb 2019 15:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/86214] [8 Regression] Strongly increased stack usage
Date: Fri, 22 Feb 2019 15:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634745-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:14 2019
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Subject: [Bug target/88530] [8/9 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:35:06 2019
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Subject: [Bug c++/86932] [8/9 Regression] Empty non-type template parameter pack not considered for SFINAE.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87480] [8/9 Regression] SFINAE constructor not matched, only in templated function
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:54 2019
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Subject: [Bug c++/86747] [8 Regression] rejects-valid with redundant friend declaration
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86926] [8 Regression] ICE for a recursive generic lambda
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/88780] [8/9 Regression] bogus -Wstringop-truncation for copying as many bytes from a string as its length
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:37:04 2019
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Subject: [Bug target/87793] [8 Regression] GCC reports error when compiling with "-fpic -Os -g"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:34:48 2019
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Subject: [Bug rtl-optimization/86685] [8/9 Regression] 436.cactusADM regression on aarch64
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:38:14 2019
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Subject: [Bug c++/87327] [8/9 Regression] Calling member functions on captured constexpr variables "is not a constant expression"
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87571] [8/9 Regression] ICE in friend_accessible_p, accessing protected member of template friend inside template class
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/85506] ICE in gfc_assign_data_value, at fortran/data.c:448
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/88775] [8/9 Regression] Optimize std::string assignment
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug ipa/87554] [8/9 Regression] internal compiler error: in record_reference, at cgraphbuild.c:64
Date: Fri, 22 Feb 2019 15:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/82258] [8/9 regression] allocate_zerosize_3.f fails since r251949
Date: Fri, 22 Feb 2019 15:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/87296] [8/9 Regression] -Wstringop-overflow false positive due to using MEM_REF type of &MEM
Date: Fri, 22 Feb 2019 15:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/89331] [8/9 Regression] internal compiler error: in build_simple_base_path, at cp/class.c:589
Date: Fri, 22 Feb 2019 15:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:38:35 2019
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Subject: [Bug c++/84598] [8/9 Regression] internal compiler error: Segmentation fault (cp_default_conversion())
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/82255] Vectorizer cost model overcounts cost of some vectorized loads
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/84353] [8/9 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 22 Feb 2019 15:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/84923] [8 regression] gcc.dg/attr-weakref-1.c failed on aarch64
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/85481] [8/9 Regression] ICE in maybe_explain_implicit_delete
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86521] [8/9 Regression] GCC 8 selects incorrect overload of ref-qualified conversion operator template
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/84472] Missing finalization and memory leak
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/80938] [7 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2330
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/84518] [8/9 Regression] ICE with lambda capturing broken variable
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86943] [7 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:39:05 2019
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Subject: [Bug fortran/88247] [8/9 Regression] ICE in get_array_ctor_var_strlen, at fortran/trans-array.c:2068
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/89190] [8 regression][ARM] armv8-m.base invalid ldm ICE
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/85640] [8/9 Regression] code size regression vs 7.x
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/77568] [7/8/9 regression] CSE/PRE/Hoisting blocks common instruction contractions
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:39:08 2019
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Subject: [Bug fortran/85686] [8/9 Regression] ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/58454] Potentially wrong(or at least weird/inconsistent) code generation with -O2 -fno-strict-overflow
Date: Fri, 22 Feb 2019 15:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug sanitizer/84508] Load of misaligned address using _mm_load_sd
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:39:40 2019
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Subject: [Bug target/82138] [8/9 Regression] Assembler messages: Error: can't resolve `.got2' {.got2 section} - `.LCF0' {.text.unlikely section}
Date: Fri, 22 Feb 2019 15:30:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:39:37 2019
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Subject: [Bug tree-optimization/87008] [8/9 Regression] gimple mem-to-mem assignment badly optimized
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug testsuite/80759] gcc.target/x86_64/abi/ms-sysv FAILs
Date: Fri, 22 Feb 2019 15:30:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #67 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86960] [8/9 Regression] internal compiler error: in coerce_template_parms
Date: Fri, 22 Feb 2019 15:30:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/78176] [MIPS] miscompiles ldxc1 with large pointers on 32-bits
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87685] [8/9 Regression] Calling a static method from inside a generic lambda requires to capture 'this'
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:39:59 2019
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Subject: [Bug preprocessor/78497] compiling with -save-temps adds -Wimplicit-fallthrough warnings
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/84016] [8/9 Regression] Spec2000 regression around Jan 14 and Jan 19 2018
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/88730] [8 Regression] gcc generates wrong debug information at -Og
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:32:25 2019
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Subject: [Bug rtl-optimization/85899] [8/9 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
Date: Fri, 22 Feb 2019 15:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:40:21 2019
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Subject: [Bug tree-optimization/79224] [7 Regression] Large C-Ray slowdown
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87750] [8/9 Regression] Failed compilation / parsing of template member call after 'using' declaration
Date: Fri, 22 Feb 2019 15:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/83052] ICE in extract_insn, at recog.c:2305 with -mcmodel=large
Date: Fri, 22 Feb 2019 15:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/87768] [8 Regression] ICE in tsubst_copy_and_build, at cp/pt.c:19002 when using concepts
Date: Fri, 22 Feb 2019 15:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:40:17 2019
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Subject: [Bug c++/87996] [8 Regression] "size of array is negative" error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX
Date: Fri, 22 Feb 2019 15:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug debug/68860] [7/8/9 regression] FAIL: gcc.dg/guality/pr36728-1.c -flto -O3 -g line 17 arg1 == 1
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634810-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:40:47 2019
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Subject: [Bug tree-optimization/86270] [8/9 Regression] Simple loop needs an extra register and an extra instruction
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/85762] [8/9 Regression] range-v3 abstraction overhead not optimized away
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634808-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:40:41 2019
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Subject: [Bug sanitizer/86899] [8/9 regression] TSAN incorrect warning: control reaches end of non-void function
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/84481] [8/9 Regression] 429.mcf with -O2 regresses by ~6% and ~4%, depending on tuning, on Zen compared to GCC 7.2
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/86097] [8 Regression] ICE: verify_gimple failed (error: mismatching comparison operand types)
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/80700] [7/8/9 Regression] ICE: Bus error (on SPE target)
Date: Fri, 22 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug debug/88389] [8/9 Regression] -flto -g -gsplit-dwarf is broken
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86524] [8 Regression] std::less with pointer arguments not usable in static_assert in constexpr function
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/88872] [8 Regression] ICE with g++ 8.x in cp_build_addr_expr_1, at cp/typeck.c:5936
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug driver/83206] -mfpu=auto does not work on ARM (armv7l-unknown-linux-gnueabihf)
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug sanitizer/88054] libsanitizer uses dlsym for versioned symbols of glibc (dlvsym should be used)
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/21161] [7/8/9 Regression] "clobbered by longjmp" warning ignores the data flow
Date: Fri, 22 Feb 2019 15:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/78798] [cleanup] some int-valued functions should be bool
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug rtl-optimization/81025] [8/9 Regression] gcc ICE while building glibc for MIPS soft-float multi-lib variant
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/84964] [8/9 Regression] ICE in expand_call, at calls.c:4540
Date: Fri, 22 Feb 2019 15:35:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/83043] [8/9 Regression] FAIL: libgomp.graphite/force-parallel-1.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/87374] [8 Regression] ICE in extract_insn, at recog.c:2305
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Fri, 22 Feb 2019 15:35:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/86468] [8/9 regression] ICE verify_gimple failed
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:42:00 2019
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Subject: [Bug testsuite/81179] gcc.dg/vect/pr65947-9.c and gcc.dg/vect/pr65947-14.c fail starting with r249553
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:41:51 2019
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Subject: [Bug fortran/77961] [Coarray] [OOP] Allocatable components in CLASS-typed coarrays unsupported.
Date: Fri, 22 Feb 2019 15:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:42:14 2019
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Subject: [Bug fortran/83705] [8/9 Regression] ICE/wrong code with large values of REPEAT after revision r256284
Date: Fri, 22 Feb 2019 15:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:41:45 2019
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Subject: [Bug libfortran/82962] valgrind reports "Conditional jump or move depends on uninitialised value" in EXECUTE_COMMAND_LINE
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug debug/84342] Location views breaks cross builds of arm including gnueabihf
Date: Fri, 22 Feb 2019 15:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/88301] [8 Regression] Optimization regression with undefined unsigned overflow
Date: Fri, 22 Feb 2019 15:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/84922] fortran reports inconsistency in rank of arguments in interface and contained procedures
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/89413] [PDT] ICE in resolve_fl_derived, at fortran/resolve.c:14392
Date: Fri, 22 Feb 2019 15:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/19706] Recognize common Fortran usages of copysign.
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:42:38 2019
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Subject: [Bug target/85860] [8/9 Regression] ICE: in lra_split_hard_reg_for, at lra-assigns.c:1810: unable to find a register to spill with -flive-range-shrinkage -mbmi2
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/78009] [OOP] polymorphic component of derived type array slice handling error
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug testsuite/82006] [8/9 Regression] ERROR: torture-init: torture_without_loops is not empty as expected
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug go/87589] [8/9 regression] index0-out.go FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87651] [8 Regression] inner class with template template friend declaration of same name fails to compile in gcc 8.1, 8.2, and 9.0
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89102] 'common_type' of single abominable function should not have a nested typename
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/88394] [8 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/80155] [7/8/9 regression] Performance regression with code hoisting enabled
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/87851] [8/9 Regression] Wrong return type for len_trim
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/89212] [8 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
>From gcc-bugs-return-634820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 15:41:18 2019
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Subject: [Bug rtl-optimization/84345] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 1)
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/80291] [OOP] ICE in gfc_conv_expr_descriptor, at fortran/trans-array.c:6662
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/84974] [8 Regression] ICE: Segmentation fault (ovl_first()/location_of())
Date: Fri, 22 Feb 2019 15:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/86567] [8/9 Regression] -Wnonnull/-Wformat/-Wrestrict affect code generation
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug tree-optimization/82446] [8/9 Regression] Missed equalities in dr_group_sort_cmp
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug c++/88752] [8 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug fortran/66366] [OOP] ICE on invalid with non-allocatable CLASS variable
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.3 has been released.
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Subject: [Bug target/87007] [8/9 Regression] 10% slowdown with -march=skylake-avx512
Date: Fri, 22 Feb 2019 15:54:00 -0000
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--- Comment #7 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Feb 22 15:54:08 2019
New Revision: 269119
URL: https://gcc.gnu.org/viewcvs?rev=269119&root=gcc&view=rev
Log:
i386: Add pass_remove_partial_avx_dependency
With -mavx, for
$ cat foo.i
extern float f;
extern double d;
extern int i;
void
foo (void)
{
d = f;
f = i;
}
we need to generate
vxorp[ds] %xmmN, %xmmN, %xmmN
...
vcvtss2sd f(%rip), %xmmN, %xmmX
...
vcvtsi2ss i(%rip), %xmmN, %xmmY
to avoid partial XMM register stall. This patch adds a pass to generate
a single
vxorps %xmmN, %xmmN, %xmmN
at entry of the nearest dominator for basic blocks with SF/DF conversions,
which is in the fake loop that contains the whole function, instead of
generating one
vxorp[ds] %xmmN, %xmmN, %xmmN
for each SF/DF conversion.
NB: The LCM algorithm isn't appropriate here since it may place a vxorps
inside the loop. Simple testcase show this:
$ cat badcase.c
extern float f;
extern double d;
void
foo (int n, int k)
{
for (int j = 0; j != n; j++)
if (j < k)
d = f;
}
It generates
...
loop:
if(j < k)
vxorps %xmm0, %xmm0, %xmm0
vcvtss2sd f(%rip), %xmm0, %xmm0
...
loopend
...
This is because LCM only works when there is a certain benifit. But for
conditional branch, LCM wouldn't move
vxorps %xmm0, %xmm0, %xmm0
out of loop. SPEC CPU 2017 on Intel Xeon with AVX512 shows:
1. The nearest dominator
|RATE |Improvement|
|500.perlbench_r | 0.55% |
|538.imagick_r | 8.43% |
|544.nab_r | 0.71% |
2. LCM
|RATE |Improvement|
|500.perlbench_r | -0.76% |
|538.imagick_r | 7.96% |
|544.nab_r | -0.13% |
Performance impacts of SPEC CPU 2017 rate on Intel Xeon with AVX512
using
-Ofast -flto -march=skylake-avx512 -funroll-loops
before
commit e739972ad6ad05e32a1dd5c29c0b950a4c4bd576
Author: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Jan 31 20:06:42 2019 +0000
PR target/89071
* config/i386/i386.md (*extendsfdf2): Split out reg->reg
alternative to avoid partial SSE register stall for TARGET_AVX.
(truncdfsf2): Ditto.
(sse4_1_round<mode>2): Ditto.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268427
138bc75d-0d04-0410-961f-82ee72b054a4
are:
|INT RATE |Improvement|
|500.perlbench_r | 0.55% |
|502.gcc_r | 0.14% |
|505.mcf_r | 0.08% |
|523.xalancbmk_r | 0.18% |
|525.x264_r |-0.49% |
|531.deepsjeng_r |-0.04% |
|541.leela_r |-0.26% |
|548.exchange2_r |-0.3% |
|557.xz_r |BuildSame|
|FP RATE |Improvement|
|503.bwaves_r |-0.29% |
|507.cactuBSSN_r | 0.04% |
|508.namd_r |-0.74% |
|510.parest_r |-0.01% |
|511.povray_r | 2.23% |
|519.lbm_r | 0.1% |
|521.wrf_r | 0.49% |
|526.blender_r | 0.13% |
|527.cam4_r | 0.65% |
|538.imagick_r | 8.43% |
|544.nab_r | 0.71% |
|549.fotonik3d_r | 0.15% |
|554.roms_r | 0.08% |
After commit e739972ad6ad05e32a1dd5c29c0b950a4c4bd576, on Skylake client,
impacts on 538.imagick_r with
-fno-unsafe-math-optimizations -march=native -Ofast -funroll-loops -flto
1. Size comparision:
before:
text data bss dec hex filename
2436377 8352 4528 2449257 255f69 imagick_r
after:
text data bss dec hex filename
2425249 8352 4528 2438129 2533f1 imagick_r
2. Number of vxorps:
before after difference
4948 4135 -19.66%
3. Performance improvement:
|RATE |Improvement|
|538.imagick_r | 5.5% |
gcc/
2019-02-22 H.J. Lu <hongjiu.lu@intel.com>
Hongtao Liu <hongtao.liu@intel.com>
Sunil K Pandey <sunil.k.pandey@intel.com>
PR target/87007
* config/i386/i386-passes.def: Add
pass_remove_partial_avx_dependency.
* config/i386/i386-protos.h
(make_pass_remove_partial_avx_dependency): New.
* config/i386/i386.c (make_pass_remove_partial_avx_dependency):
New function.
(pass_data_remove_partial_avx_dependency): New.
(pass_remove_partial_avx_dependency): Likewise.
(make_pass_remove_partial_avx_dependency): Likewise.
* config/i386/i386.md (avx_partial_xmm_update): New attribute.
(*extendsfdf2): Add avx_partial_xmm_update.
(truncdfsf2): Likewise.
(*float<SWI48:mode><MODEF:mode>2): Likewise.
(SF/DF conversion splitters): Disabled for TARGET_AVX.
gcc/testsuite/
2019-02-22 H.J. Lu <hongjiu.lu@intel.com>
Hongtao Liu <hongtao.liu@intel.com>
Sunil K Pandey <sunil.k.pandey@intel.com>
PR target/87007
* gcc.target/i386/pr87007-1.c: New test.
* gcc.target/i386/pr87007-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr87007-1.c
trunk/gcc/testsuite/gcc.target/i386/pr87007-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386-passes.def
trunk/gcc/config/i386/i386-protos.h
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Fri, 22 Feb 2019 15:54:00 -0000
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--- Comment #21 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Feb 22 15:54:08 2019
New Revision: 269119
URL: https://gcc.gnu.org/viewcvs?rev=269119&root=gcc&view=rev
Log:
i386: Add pass_remove_partial_avx_dependency
With -mavx, for
$ cat foo.i
extern float f;
extern double d;
extern int i;
void
foo (void)
{
d = f;
f = i;
}
we need to generate
vxorp[ds] %xmmN, %xmmN, %xmmN
...
vcvtss2sd f(%rip), %xmmN, %xmmX
...
vcvtsi2ss i(%rip), %xmmN, %xmmY
to avoid partial XMM register stall. This patch adds a pass to generate
a single
vxorps %xmmN, %xmmN, %xmmN
at entry of the nearest dominator for basic blocks with SF/DF conversions,
which is in the fake loop that contains the whole function, instead of
generating one
vxorp[ds] %xmmN, %xmmN, %xmmN
for each SF/DF conversion.
NB: The LCM algorithm isn't appropriate here since it may place a vxorps
inside the loop. Simple testcase show this:
$ cat badcase.c
extern float f;
extern double d;
void
foo (int n, int k)
{
for (int j = 0; j != n; j++)
if (j < k)
d = f;
}
It generates
...
loop:
if(j < k)
vxorps %xmm0, %xmm0, %xmm0
vcvtss2sd f(%rip), %xmm0, %xmm0
...
loopend
...
This is because LCM only works when there is a certain benifit. But for
conditional branch, LCM wouldn't move
vxorps %xmm0, %xmm0, %xmm0
out of loop. SPEC CPU 2017 on Intel Xeon with AVX512 shows:
1. The nearest dominator
|RATE |Improvement|
|500.perlbench_r | 0.55% |
|538.imagick_r | 8.43% |
|544.nab_r | 0.71% |
2. LCM
|RATE |Improvement|
|500.perlbench_r | -0.76% |
|538.imagick_r | 7.96% |
|544.nab_r | -0.13% |
Performance impacts of SPEC CPU 2017 rate on Intel Xeon with AVX512
using
-Ofast -flto -march=skylake-avx512 -funroll-loops
before
commit e739972ad6ad05e32a1dd5c29c0b950a4c4bd576
Author: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Jan 31 20:06:42 2019 +0000
PR target/89071
* config/i386/i386.md (*extendsfdf2): Split out reg->reg
alternative to avoid partial SSE register stall for TARGET_AVX.
(truncdfsf2): Ditto.
(sse4_1_round<mode>2): Ditto.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268427
138bc75d-0d04-0410-961f-82ee72b054a4
are:
|INT RATE |Improvement|
|500.perlbench_r | 0.55% |
|502.gcc_r | 0.14% |
|505.mcf_r | 0.08% |
|523.xalancbmk_r | 0.18% |
|525.x264_r |-0.49% |
|531.deepsjeng_r |-0.04% |
|541.leela_r |-0.26% |
|548.exchange2_r |-0.3% |
|557.xz_r |BuildSame|
|FP RATE |Improvement|
|503.bwaves_r |-0.29% |
|507.cactuBSSN_r | 0.04% |
|508.namd_r |-0.74% |
|510.parest_r |-0.01% |
|511.povray_r | 2.23% |
|519.lbm_r | 0.1% |
|521.wrf_r | 0.49% |
|526.blender_r | 0.13% |
|527.cam4_r | 0.65% |
|538.imagick_r | 8.43% |
|544.nab_r | 0.71% |
|549.fotonik3d_r | 0.15% |
|554.roms_r | 0.08% |
After commit e739972ad6ad05e32a1dd5c29c0b950a4c4bd576, on Skylake client,
impacts on 538.imagick_r with
-fno-unsafe-math-optimizations -march=native -Ofast -funroll-loops -flto
1. Size comparision:
before:
text data bss dec hex filename
2436377 8352 4528 2449257 255f69 imagick_r
after:
text data bss dec hex filename
2425249 8352 4528 2438129 2533f1 imagick_r
2. Number of vxorps:
before after difference
4948 4135 -19.66%
3. Performance improvement:
|RATE |Improvement|
|538.imagick_r | 5.5% |
gcc/
2019-02-22 H.J. Lu <hongjiu.lu@intel.com>
Hongtao Liu <hongtao.liu@intel.com>
Sunil K Pandey <sunil.k.pandey@intel.com>
PR target/87007
* config/i386/i386-passes.def: Add
pass_remove_partial_avx_dependency.
* config/i386/i386-protos.h
(make_pass_remove_partial_avx_dependency): New.
* config/i386/i386.c (make_pass_remove_partial_avx_dependency):
New function.
(pass_data_remove_partial_avx_dependency): New.
(pass_remove_partial_avx_dependency): Likewise.
(make_pass_remove_partial_avx_dependency): Likewise.
* config/i386/i386.md (avx_partial_xmm_update): New attribute.
(*extendsfdf2): Add avx_partial_xmm_update.
(truncdfsf2): Likewise.
(*float<SWI48:mode><MODEF:mode>2): Likewise.
(SF/DF conversion splitters): Disabled for TARGET_AVX.
gcc/testsuite/
2019-02-22 H.J. Lu <hongjiu.lu@intel.com>
Hongtao Liu <hongtao.liu@intel.com>
Sunil K Pandey <sunil.k.pandey@intel.com>
PR target/87007
* gcc.target/i386/pr87007-1.c: New test.
* gcc.target/i386/pr87007-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr87007-1.c
trunk/gcc/testsuite/gcc.target/i386/pr87007-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386-passes.def
trunk/gcc/config/i386/i386-protos.h
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89431] CPP integer macros not defined
Date: Fri, 22 Feb 2019 16:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89431
--- Comment #8 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 22, 2019 at 08:33:25AM +0000, mark.eggleston at codethink dot com
wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89431
>
> --- Comment #7 from MarkEggleston <mark.eggleston at codethink dot com> ---
> The only reason this PR was raised was because an attempt to use conditional
> compilation based on integer kinds failed because the implementation did not
> match the documentation.
>
> There is no issue with the existence of __GFC_REAL_10_ and __GFC_REAL_16_.
>
Just looks at the documentation. Yep, it's wrong.
I'll fix it shortly. An yes, I prefer INT to
INTEGER.
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Subject: [Bug target/87007] [8 Regression] 10% slowdown with -march=skylake-avx512
Date: Fri, 22 Feb 2019 16:13:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] 10% |[8 Regression] 10% slowdown
|slowdown with |with -march=skylake-avx512
|-march=skylake-avx512 |
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed on trunk so far.
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Subject: [Bug target/89229] Incorrect xmm16-xmm31/ymm16-ymm31 in vector move
Date: Fri, 22 Feb 2019 16:19:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kretz at kde dot org
--- Comment #22 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 86896 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/86896] invalid vmovdqa64 instruction for KNL emitted
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |DUPLICATE
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
Dup
*** This bug has been marked as a duplicate of bug 89229 ***
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/89454] New: gcc generates wrong debug information at -Og
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Bug ID: 89454
Summary: gcc generates wrong debug information at -Og
Product: gcc
Version: unknown
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It bug affects the latest trunk.
It also affects gcc-8 to gcc-4.8.
With "-Og", it incorrectly prints "l=0".
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 9.0.1 20190222 (experimental) [trunk revision 269113] (GCC)
$ cat abc.c
int a;
int main() {
char l = 0;
if (a)
;
else
l = 10 || 0;
optimize_me_not();
}
$ cat cmds
b 8
r
p l
kill
q
$ cat outer.c
optimize_me_not() {}
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x40049c: file abc.c, line 8.
Breakpoint 1, main () at abc.c:8
8 optimize_me_not();
$1 = 1 '\001'
Kill the program being debugged? (y or n) [answered Y; input not from terminal]
$ gcc-trunk -g abc.c outer.c -Og
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x400486: file abc.c, line 8.
Breakpoint 1, main () at abc.c:8
8 optimize_me_not();
$1 = 0 '\000'
Kill the program being debugged? (y or n) [answered Y; input not from terminal]
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Subject: [Bug c/89425] [9 Regression] -Wabsolute-value warns in dead subexpressions
Date: Fri, 22 Feb 2019 16:25:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Feb 22 16:24:36 2019
New Revision: 269121
URL: https://gcc.gnu.org/viewcvs?rev=269121&root=gcc&view=rev
Log:
PR c/89425 - -Wabsolute-value warns in dead subexpressions
gcc/c/ChangeLog:
PR c/89425
* c-parser.c (sizeof_ptr_memacc_comptypes): Avoid warning in
unreachable subexpressions.
gcc/testsuite/ChangeLog:
PR c/89425
* gcc.dg/Wabsolute-value.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Wabsolute-value.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/89425] [9 Regression] -Wabsolute-value warns in dead subexpressions
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89425
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed via r269121.
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Subject: [Bug target/89229] Incorrect xmm16-xmm31/ymm16-ymm31 in vector move
Date: Fri, 22 Feb 2019 16:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
--- Comment #23 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01841.html
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Subject: [Bug target/89229] Incorrect xmm16-xmm31/ymm16-ymm31 in vector move
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45707|0 |1
is obsolete| |
--- Comment #24 from H.J. Lu <hjl.tools at gmail dot com> ---
Comment on attachment 45707
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45707
A new patch
>From fd7220a7551ee774614ca89574241813aae153b7 Mon Sep 17 00:00:00 2001
>From: "H.J. Lu" <hjl.tools@gmail.com>
>Date: Tue, 12 Feb 2019 13:25:41 -0800
>Subject: [PATCH] i386: Properly encode xmm16-xmm31/ymm16-ymm31 for vector move
>
>i386 backend has
>
>INT_MODE (OI, 32);
>INT_MODE (XI, 64);
>
>So, XI_MODE represents 64 INTEGER bytes = 64 * 8 = 512 bit operation,
>in case of const_1, all 512 bits set.
>
>We can load zeros with narrower instruction, (e.g. 256 bit by inherent
>zeroing of highpart in case of 128 bit xor), so TImode in this case.
>
>Some targets prefer V4SF mode, so they will emit float xorps for zeroing.
>
>sse.md has
>
>(define_insn "mov<mode>_internal"
> [(set (match_operand:VMOVE 0 "nonimmediate_operand"
> "=v,v ,v ,m")
> (match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand"
> " C,BC,vm,v"))]
>....
> /* There is no evex-encoded vmov* for sizes smaller than 64-bytes
> in avx512f, so we need to use workarounds, to access sse registers
> 16-31, which are evex-only. In avx512vl we don't need workarounds. */
> if (TARGET_AVX512F && <MODE_SIZE> < 64 && !TARGET_AVX512VL
> && (EXT_REX_SSE_REG_P (operands[0])
> || EXT_REX_SSE_REG_P (operands[1])))
> {
> if (memory_operand (operands[0], <MODE>mode))
> {
> if (<MODE_SIZE> == 32)
> return "vextract<shuffletype>64x4\t{$0x0, %g1, %0|%0, %g1, 0x0}";
> else if (<MODE_SIZE> == 16)
> return "vextract<shuffletype>32x4\t{$0x0, %g1, %0|%0, %g1, 0x0}";
> else
> gcc_unreachable ();
> }
>...
>
>However, since ix86_hard_regno_mode_ok has
>
> /* TODO check for QI/HI scalars. */
> /* AVX512VL allows sse regs16+ for 128/256 bit modes. */
> if (TARGET_AVX512VL
> && (mode == OImode
> || mode == TImode
> || VALID_AVX256_REG_MODE (mode)
> || VALID_AVX512VL_128_REG_MODE (mode)))
> return true;
>
> /* xmm16-xmm31 are only available for AVX-512. */
> if (EXT_REX_SSE_REGNO_P (regno))
> return false;
>
> if (TARGET_AVX512F && <MODE_SIZE> < 64 && !TARGET_AVX512VL
> && (EXT_REX_SSE_REG_P (operands[0])
> || EXT_REX_SSE_REG_P (operands[1])))
>
>is a dead code.
>
>All TYPE_SSEMOV vector moves are consolidated to ix86_output_ssemov:
>
>1. If xmm16-xmm31/ymm16-ymm31 registers aren't used, SSE/AVX vector
>moves will be generated.
>2. If xmm16-xmm31/ymm16-ymm31 registers are used:
> a. With AVX512VL, AVX512VL vector moves will be generated.
> b. Without AVX512VL, xmm16-xmm31/ymm16-ymm31 register to register
> move will be done with zmm register move.
>
>ext_sse_reg_operand is removed since it is no longer needed.
>
>gcc/
>
> PR target/89229
> * config/i386/i386-protos.h (ix86_output_ssemov): New prototype.
> * config/i386/i386.c (ix86_get_ssemov): New function.
> (ix86_output_ssemov): Likewise.
> * config/i386/i386.md (*movxi_internal_avx512f): Call
> ix86_output_ssemov for TYPE_SSEMOV.
> (*movoi_internal_avx): Call ix86_output_ssemov for TYPE_SSEMOV.
> Remove ext_sse_reg_operand and TARGET_AVX512VL check.
> (*movti_internal): Likewise.
> (*movdi_internal): Call ix86_output_ssemov for TYPE_SSEMOV.
> Remove ext_sse_reg_operand check.
> (*movsi_internal): Likewise.
> (*movtf_internal): Call ix86_output_ssemov for TYPE_SSEMOV.
> (*movdf_internal): Call ix86_output_ssemov for TYPE_SSEMOV.
> Remove TARGET_AVX512F, TARGET_PREFER_AVX256, TARGET_AVX512VL
> and ext_sse_reg_operand check.
> (*movsf_internal_avx): Call ix86_output_ssemov for TYPE_SSEMOV.
> Remove TARGET_PREFER_AVX256, TARGET_AVX512VL and
> ext_sse_reg_operand check.
> * config/i386/mmx.md (MMXMODE:*mov<mode>_internal): Call
> ix86_output_ssemov for TYPE_SSEMOV. Remove ext_sse_reg_operand
> check.
> * config/i386/sse.md (VMOVE:mov<mode>_internal): Call
> ix86_output_ssemov for TYPE_SSEMOV. Remove TARGET_AVX512VL
> check.
> * config/i386/predicates.md (ext_sse_reg_operand): Removed.
>
>gcc/testsuite/
>
> PR target/89229
> * gcc.target/i386/pr89229-2a.c: New test.
> * gcc.target/i386/pr89229-2b.c: Likewise.
> * gcc.target/i386/pr89229-2c.c: Likewise.
> * gcc.target/i386/pr89229-3a.c: Likewise.
> * gcc.target/i386/pr89229-3b.c: Likewise.
> * gcc.target/i386/pr89229-3c.c: Likewise.
> * gcc.target/i386/pr89229-4a.c: Likewise.
> * gcc.target/i386/pr89229-4b.c: Likewise.
> * gcc.target/i386/pr89229-4c.c: Likewise.
> * gcc.target/i386/pr89229-5a.c: Likewise.
> * gcc.target/i386/pr89229-5b.c: Likewise.
> * gcc.target/i386/pr89229-5c.c: Likewise.
> * gcc.target/i386/pr89229-6a.c: Likewise.
> * gcc.target/i386/pr89229-6b.c: Likewise.
> * gcc.target/i386/pr89229-6c.c: Likewise.
> * gcc.target/i386/pr89229-7a.c: Likewise.
> * gcc.target/i386/pr89229-7b.c: Likewise.
> * gcc.target/i386/pr89229-7c.c: Likewise.
>---
> gcc/config/i386/i386-protos.h | 2 +
> gcc/config/i386/i386.c | 250 +++++++++++++++++++++
> gcc/config/i386/i386.md | 212 ++---------------
> gcc/config/i386/mmx.md | 29 +--
> gcc/config/i386/predicates.md | 5 -
> gcc/config/i386/sse.md | 98 +-------
> gcc/testsuite/gcc.target/i386/pr89229-2a.c | 15 ++
> gcc/testsuite/gcc.target/i386/pr89229-2b.c | 13 ++
> gcc/testsuite/gcc.target/i386/pr89229-2c.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-3a.c | 17 ++
> gcc/testsuite/gcc.target/i386/pr89229-3b.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-3c.c | 7 +
> gcc/testsuite/gcc.target/i386/pr89229-4a.c | 17 ++
> gcc/testsuite/gcc.target/i386/pr89229-4b.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-4c.c | 7 +
> gcc/testsuite/gcc.target/i386/pr89229-5a.c | 16 ++
> gcc/testsuite/gcc.target/i386/pr89229-5b.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-5c.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-6a.c | 16 ++
> gcc/testsuite/gcc.target/i386/pr89229-6b.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-6c.c | 6 +
> gcc/testsuite/gcc.target/i386/pr89229-7a.c | 16 ++
> gcc/testsuite/gcc.target/i386/pr89229-7b.c | 12 +
> gcc/testsuite/gcc.target/i386/pr89229-7c.c | 6 +
> 24 files changed, 453 insertions(+), 327 deletions(-)
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-2a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-2b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-2c.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-3a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-3b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-3c.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-4a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-4b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-4c.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-5a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-5b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-5c.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-6a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-6b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-6c.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-7a.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-7b.c
> create mode 100644 gcc/testsuite/gcc.target/i386/pr89229-7c.c
>
>diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
>index 2d600173917..27f5cc13abf 100644
>--- a/gcc/config/i386/i386-protos.h
>+++ b/gcc/config/i386/i386-protos.h
>@@ -38,6 +38,8 @@ extern void ix86_expand_split_stack_prologue (void);
> extern void ix86_output_addr_vec_elt (FILE *, int);
> extern void ix86_output_addr_diff_elt (FILE *, int, int);
>
>+extern const char *ix86_output_ssemov (rtx_insn *, rtx *);
>+
> extern enum calling_abi ix86_cfun_abi (void);
> extern enum calling_abi ix86_function_type_abi (const_tree);
>
>diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
>index fd05873ba39..97d1ea4229e 100644
>--- a/gcc/config/i386/i386.c
>+++ b/gcc/config/i386/i386.c
>@@ -10281,6 +10281,256 @@ ix86_standard_x87sse_constant_load_p (const rtx_insn *insn, rtx dst)
> return true;
> }
>
>+/* Return the opcode of the TYPE_SSEMOV instruction. To move from
>+ or to xmm16-xmm31/ymm16-ymm31 registers, we either require
>+ TARGET_AVX512VL or it is a register to register move which can
>+ be done with zmm register move. */
>+
>+static const char *
>+ix86_get_ssemov (rtx *operands, unsigned size, machine_mode mode)
>+{
>+ static char buf[128];
>+ bool misaligned_p = (misaligned_operand (operands[0], mode)
>+ || misaligned_operand (operands[1], mode));
>+ bool evex_reg_p = (EXT_REX_SSE_REG_P (operands[0])
>+ || EXT_REX_SSE_REG_P (operands[1]));
>+ machine_mode scalar_mode = GET_MODE_INNER (mode);
>+
>+ const char *opcode = NULL;
>+ enum
>+ {
>+ opcode_int,
>+ opcode_float,
>+ opcode_double
>+ } type = opcode_int;
>+ if (SCALAR_FLOAT_MODE_P (scalar_mode))
>+ {
>+ switch (scalar_mode)
>+ {
>+ case E_SFmode:
>+ if (size == 64 || !evex_reg_p || TARGET_AVX512VL)
>+ opcode = misaligned_p ? "%vmovups" : "%vmovaps";
>+ else
>+ type = opcode_float;
>+ break;
>+ case E_DFmode:
>+ if (size == 64 || !evex_reg_p || TARGET_AVX512VL)
>+ opcode = misaligned_p ? "%vmovupd" : "%vmovapd";
>+ else
>+ type = opcode_double;
>+ break;
>+ case E_TFmode:
>+ if (size == 64)
>+ opcode = misaligned_p ? "vmovdqu64" : "vmovdqa64";
>+ else if (evex_reg_p)
>+ {
>+ if (TARGET_AVX512VL)
>+ opcode = misaligned_p ? "vmovdqu64" : "vmovdqa64";
>+ }
>+ else
>+ opcode = misaligned_p ? "%vmovdqu" : "%vmovdqa";
>+ break;
>+ default:
>+ gcc_unreachable ();
>+ }
>+ }
>+ else if (SCALAR_INT_MODE_P (scalar_mode))
>+ {
>+ switch (scalar_mode)
>+ {
>+ case E_QImode:
>+ if (size == 64)
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu8"
>+ : "vmovdqu64")
>+ : "vmovdqa64");
>+ else if (evex_reg_p)
>+ {
>+ if (TARGET_AVX512VL)
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu8"
>+ : "vmovdqu64")
>+ : "vmovdqa64");
>+ }
>+ else
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu8"
>+ : "%vmovdqu")
>+ : "%vmovdqa");
>+ break;
>+ case E_HImode:
>+ if (size == 64)
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu16"
>+ : "vmovdqu64")
>+ : "vmovdqa64");
>+ else if (evex_reg_p)
>+ {
>+ if (TARGET_AVX512VL)
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu16"
>+ : "vmovdqu64")
>+ : "vmovdqa64");
>+ }
>+ else
>+ opcode = (misaligned_p
>+ ? (TARGET_AVX512BW
>+ ? "vmovdqu16"
>+ : "%vmovdqu")
>+ : "%vmovdqa");
>+ break;
>+ case E_SImode:
>+ if (size == 64)
>+ opcode = misaligned_p ? "vmovdqu32" : "vmovdqa32";
>+ else if (evex_reg_p)
>+ {
>+ if (TARGET_AVX512VL)
>+ opcode = misaligned_p ? "vmovdqu32" : "vmovdqa32";
>+ }
>+ else
>+ opcode = misaligned_p ? "%vmovdqu" : "%vmovdqa";
>+ break;
>+ case E_DImode:
>+ case E_TImode:
>+ case E_OImode:
>+ if (size == 64)
>+ opcode = misaligned_p ? "vmovdqu64" : "vmovdqa64";
>+ else if (evex_reg_p)
>+ {
>+ if (TARGET_AVX512VL)
>+ opcode = misaligned_p ? "vmovdqu64" : "vmovdqa64";
>+ }
>+ else
>+ opcode = misaligned_p ? "%vmovdqu" : "%vmovdqa";
>+ break;
>+ case E_XImode:
>+ opcode = misaligned_p ? "vmovdqu64" : "vmovdqa64";
>+ break;
>+ default:
>+ gcc_unreachable ();
>+ }
>+ }
>+ else
>+ gcc_unreachable ();
>+
>+ if (!opcode)
>+ {
>+ /* NB: We get here only because we move xmm16-xmm31/ymm16-ymm31
>+ registers without AVX512VL by using zmm register move. */
>+ if (!evex_reg_p
>+ || TARGET_AVX512VL
>+ || memory_operand (operands[0], mode)
>+ || memory_operand (operands[1], mode))
>+ gcc_unreachable ();
>+ size = 64;
>+ switch (type)
>+ {
>+ case opcode_int:
>+ opcode = misaligned_p ? "vmovdqu32" : "vmovdqa32";
>+ break;
>+ case opcode_float:
>+ opcode = misaligned_p ? "%vmovups" : "%vmovaps";
>+ break;
>+ case opcode_double:
>+ opcode = misaligned_p ? "%vmovupd" : "%vmovapd";
>+ break;
>+ }
>+ }
>+
>+ switch (size)
>+ {
>+ case 64:
>+ snprintf (buf, sizeof (buf), "%s\t{%%g1, %%g0|%%g0, %%g1}",
>+ opcode);
>+ break;
>+ case 32:
>+ snprintf (buf, sizeof (buf), "%s\t{%%t1, %%t0|%%t0, %%t1}",
>+ opcode);
>+ break;
>+ case 16:
>+ snprintf (buf, sizeof (buf), "%s\t{%%x1, %%x0|%%x0, %%x1}",
>+ opcode);
>+ break;
>+ default:
>+ gcc_unreachable ();
>+ }
>+ return buf;
>+}
>+
>+/* Return the template of the TYPE_SSEMOV instruction to move
>+ operands[1] into operands[0]. */
>+
>+const char *
>+ix86_output_ssemov (rtx_insn *insn, rtx *operands)
>+{
>+ machine_mode mode = GET_MODE (operands[0]);
>+ if (get_attr_type (insn) != TYPE_SSEMOV
>+ || mode != GET_MODE (operands[1]))
>+ gcc_unreachable ();
>+
>+ enum attr_mode insn_mode = get_attr_mode (insn);
>+
>+ switch (insn_mode)
>+ {
>+ case MODE_XI:
>+ case MODE_V8DF:
>+ case MODE_V16SF:
>+ return ix86_get_ssemov (operands, 64, mode);
>+
>+ case MODE_OI:
>+ case MODE_V4DF:
>+ case MODE_V8SF:
>+ return ix86_get_ssemov (operands, 32, mode);
>+
>+ case MODE_TI:
>+ case MODE_V2DF:
>+ case MODE_V4SF:
>+ return ix86_get_ssemov (operands, 16, mode);
>+
>+ case MODE_DI:
>+ /* Handle broken assemblers that require movd instead of movq. */
>+ if (!HAVE_AS_IX86_INTERUNIT_MOVQ
>+ && (GENERAL_REG_P (operands[0])
>+ || GENERAL_REG_P (operands[1])))
>+ return "%vmovd\t{%1, %0|%0, %1}";
>+ else
>+ return "%vmovq\t{%1, %0|%0, %1}";
>+
>+ case MODE_V2SF:
>+ if (TARGET_AVX && REG_P (operands[0]))
>+ return "vmovlps\t{%1, %d0|%d0, %1}";
>+ else
>+ return "%vmovlps\t{%1, %0|%0, %1}";
>+
>+ case MODE_DF:
>+ if (TARGET_AVX && REG_P (operands[0]) && REG_P (operands[1]))
>+ return "vmovsd\t{%d1, %0|%0, %d1}";
>+ else
>+ return "%vmovsd\t{%1, %0|%0, %1}";
>+
>+ case MODE_V1DF:
>+ gcc_assert (!TARGET_AVX);
>+ return "movlpd\t{%1, %0|%0, %1}";
>+
>+ case MODE_SI:
>+ return "%vmovd\t{%1, %0|%0, %1}";
>+
>+ case MODE_SF:
>+ if (TARGET_AVX && REG_P (operands[0]) && REG_P (operands[1]))
>+ return "vmovss\t{%d1, %0|%0, %d1}";
>+ else
>+ return "%vmovss\t{%1, %0|%0, %1}";
>+
>+ default:
>+ gcc_unreachable ();
>+ }
>+}
>+
> /* Returns true if OP contains a symbol reference */
>
> bool
>diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
>index 9948f77fca5..40ed93dc804 100644
>--- a/gcc/config/i386/i386.md
>+++ b/gcc/config/i386/i386.md
>@@ -1878,11 +1878,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- if (misaligned_operand (operands[0], XImode)
>- || misaligned_operand (operands[1], XImode))
>- return "vmovdqu32\t{%1, %0|%0, %1}";
>- else
>- return "vmovdqa32\t{%1, %0|%0, %1}";
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -1905,25 +1901,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- if (misaligned_operand (operands[0], OImode)
>- || misaligned_operand (operands[1], OImode))
>- {
>- if (get_attr_mode (insn) == MODE_V8SF)
>- return "vmovups\t{%1, %0|%0, %1}";
>- else if (get_attr_mode (insn) == MODE_XI)
>- return "vmovdqu32\t{%1, %0|%0, %1}";
>- else
>- return "vmovdqu\t{%1, %0|%0, %1}";
>- }
>- else
>- {
>- if (get_attr_mode (insn) == MODE_V8SF)
>- return "vmovaps\t{%1, %0|%0, %1}";
>- else if (get_attr_mode (insn) == MODE_XI)
>- return "vmovdqa32\t{%1, %0|%0, %1}";
>- else
>- return "vmovdqa\t{%1, %0|%0, %1}";
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -1933,13 +1911,7 @@
> (set_attr "type" "sselog1,sselog1,ssemov,ssemov")
> (set_attr "prefix" "vex")
> (set (attr "mode")
>- (cond [(ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand"))
>- (const_string "XI")
>- (and (eq_attr "alternative" "1")
>- (match_test "TARGET_AVX512VL"))
>- (const_string "XI")
>- (ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
>+ (cond [(ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
> (and (eq_attr "alternative" "3")
> (match_test "TARGET_SSE_TYPELESS_STORES")))
> (const_string "V8SF")
>@@ -1965,27 +1937,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- /* TDmode values are passed as TImode on the stack. Moving them
>- to stack may result in unaligned memory access. */
>- if (misaligned_operand (operands[0], TImode)
>- || misaligned_operand (operands[1], TImode))
>- {
>- if (get_attr_mode (insn) == MODE_V4SF)
>- return "%vmovups\t{%1, %0|%0, %1}";
>- else if (get_attr_mode (insn) == MODE_XI)
>- return "vmovdqu32\t{%1, %0|%0, %1}";
>- else
>- return "%vmovdqu\t{%1, %0|%0, %1}";
>- }
>- else
>- {
>- if (get_attr_mode (insn) == MODE_V4SF)
>- return "%vmovaps\t{%1, %0|%0, %1}";
>- else if (get_attr_mode (insn) == MODE_XI)
>- return "vmovdqa32\t{%1, %0|%0, %1}";
>- else
>- return "%vmovdqa\t{%1, %0|%0, %1}";
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -2012,12 +1964,6 @@
> (set (attr "mode")
> (cond [(eq_attr "alternative" "0,1")
> (const_string "DI")
>- (ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand"))
>- (const_string "XI")
>- (and (eq_attr "alternative" "3")
>- (match_test "TARGET_AVX512VL"))
>- (const_string "XI")
> (ior (not (match_test "TARGET_SSE2"))
> (ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
> (and (eq_attr "alternative" "5")
>@@ -2091,31 +2037,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- switch (get_attr_mode (insn))
>- {
>- case MODE_DI:
>- /* Handle broken assemblers that require movd instead of movq. */
>- if (!HAVE_AS_IX86_INTERUNIT_MOVQ
>- && (GENERAL_REG_P (operands[0]) || GENERAL_REG_P (operands[1])))
>- return "%vmovd\t{%1, %0|%0, %1}";
>- return "%vmovq\t{%1, %0|%0, %1}";
>-
>- case MODE_TI:
>- /* Handle AVX512 registers set. */
>- if (EXT_REX_SSE_REG_P (operands[0])
>- || EXT_REX_SSE_REG_P (operands[1]))
>- return "vmovdqa64\t{%1, %0|%0, %1}";
>- return "%vmovdqa\t{%1, %0|%0, %1}";
>-
>- case MODE_V2SF:
>- gcc_assert (!TARGET_AVX);
>- return "movlps\t{%1, %0|%0, %1}";
>- case MODE_V4SF:
>- return "%vmovaps\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> case TYPE_SSECVT:
> if (SSE_REG_P (operands[0]))
>@@ -2201,10 +2123,7 @@
> (cond [(eq_attr "alternative" "2")
> (const_string "SI")
> (eq_attr "alternative" "12,13")
>- (cond [(ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand"))
>- (const_string "TI")
>- (ior (not (match_test "TARGET_SSE2"))
>+ (cond [(ior (not (match_test "TARGET_SSE2"))
> (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL"))
> (const_string "V4SF")
> (match_test "TARGET_AVX")
>@@ -2327,25 +2246,7 @@
> gcc_unreachable ();
>
> case TYPE_SSEMOV:
>- switch (get_attr_mode (insn))
>- {
>- case MODE_SI:
>- return "%vmovd\t{%1, %0|%0, %1}";
>- case MODE_TI:
>- return "%vmovdqa\t{%1, %0|%0, %1}";
>- case MODE_XI:
>- return "vmovdqa32\t{%g1, %g0|%g0, %g1}";
>-
>- case MODE_V4SF:
>- return "%vmovaps\t{%1, %0|%0, %1}";
>-
>- case MODE_SF:
>- gcc_assert (!TARGET_AVX);
>- return "movss\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> case TYPE_MMX:
> return "pxor\t%0, %0";
>@@ -2411,10 +2312,7 @@
> (cond [(eq_attr "alternative" "2,3")
> (const_string "DI")
> (eq_attr "alternative" "8,9")
>- (cond [(ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand"))
>- (const_string "XI")
>- (ior (not (match_test "TARGET_SSE2"))
>+ (cond [(ior (not (match_test "TARGET_SSE2"))
> (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL"))
> (const_string "V4SF")
> (match_test "TARGET_AVX")
>@@ -3234,31 +3132,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- /* Handle misaligned load/store since we
>- don't have movmisaligntf pattern. */
>- if (misaligned_operand (operands[0], TFmode)
>- || misaligned_operand (operands[1], TFmode))
>- {
>- if (get_attr_mode (insn) == MODE_V4SF)
>- return "%vmovups\t{%1, %0|%0, %1}";
>- else if (TARGET_AVX512VL
>- && (EXT_REX_SSE_REG_P (operands[0])
>- || EXT_REX_SSE_REG_P (operands[1])))
>- return "vmovdqu64\t{%1, %0|%0, %1}";
>- else
>- return "%vmovdqu\t{%1, %0|%0, %1}";
>- }
>- else
>- {
>- if (get_attr_mode (insn) == MODE_V4SF)
>- return "%vmovaps\t{%1, %0|%0, %1}";
>- else if (TARGET_AVX512VL
>- && (EXT_REX_SSE_REG_P (operands[0])
>- || EXT_REX_SSE_REG_P (operands[1])))
>- return "vmovdqa64\t{%1, %0|%0, %1}";
>- else
>- return "%vmovdqa\t{%1, %0|%0, %1}";
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> case TYPE_MULTI:
> return "#";
>@@ -3411,37 +3285,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- switch (get_attr_mode (insn))
>- {
>- case MODE_DF:
>- if (TARGET_AVX && REG_P (operands[0]) && REG_P (operands[1]))
>- return "vmovsd\t{%d1, %0|%0, %d1}";
>- return "%vmovsd\t{%1, %0|%0, %1}";
>-
>- case MODE_V4SF:
>- return "%vmovaps\t{%1, %0|%0, %1}";
>- case MODE_V8DF:
>- return "vmovapd\t{%g1, %g0|%g0, %g1}";
>- case MODE_V2DF:
>- return "%vmovapd\t{%1, %0|%0, %1}";
>-
>- case MODE_V2SF:
>- gcc_assert (!TARGET_AVX);
>- return "movlps\t{%1, %0|%0, %1}";
>- case MODE_V1DF:
>- gcc_assert (!TARGET_AVX);
>- return "movlpd\t{%1, %0|%0, %1}";
>-
>- case MODE_DI:
>- /* Handle broken assemblers that require movd instead of movq. */
>- if (!HAVE_AS_IX86_INTERUNIT_MOVQ
>- && (GENERAL_REG_P (operands[0]) || GENERAL_REG_P (operands[1])))
>- return "%vmovd\t{%1, %0|%0, %1}";
>- return "%vmovq\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -3497,9 +3341,6 @@
> (eq_attr "alternative" "12,16")
> (cond [(not (match_test "TARGET_SSE2"))
> (const_string "V4SF")
>- (and (match_test "TARGET_AVX512F")
>- (not (match_test "TARGET_PREFER_AVX256")))
>- (const_string "XI")
> (match_test "TARGET_AVX")
> (const_string "V2DF")
> (match_test "optimize_function_for_size_p (cfun)")
>@@ -3515,12 +3356,7 @@
>
> /* movaps is one byte shorter for non-AVX targets. */
> (eq_attr "alternative" "13,17")
>- (cond [(and (ior (not (match_test "TARGET_PREFER_AVX256"))
>- (not (match_test "TARGET_AVX512VL")))
>- (ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand")))
>- (const_string "V8DF")
>- (ior (not (match_test "TARGET_SSE2"))
>+ (cond [(ior (not (match_test "TARGET_SSE2"))
> (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL"))
> (const_string "V4SF")
> (match_test "TARGET_SSE_PARTIAL_REG_DEPENDENCY")
>@@ -3612,24 +3448,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- switch (get_attr_mode (insn))
>- {
>- case MODE_SF:
>- if (TARGET_AVX && REG_P (operands[0]) && REG_P (operands[1]))
>- return "vmovss\t{%d1, %0|%0, %d1}";
>- return "%vmovss\t{%1, %0|%0, %1}";
>-
>- case MODE_V16SF:
>- return "vmovaps\t{%g1, %g0|%g0, %g1}";
>- case MODE_V4SF:
>- return "%vmovaps\t{%1, %0|%0, %1}";
>-
>- case MODE_SI:
>- return "%vmovd\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> case TYPE_MMXMOV:
> switch (get_attr_mode (insn))
>@@ -3702,12 +3521,7 @@
> better to maintain the whole registers in single format
> to avoid problems on using packed logical operations. */
> (eq_attr "alternative" "6")
>- (cond [(and (ior (not (match_test "TARGET_PREFER_AVX256"))
>- (not (match_test "TARGET_AVX512VL")))
>- (ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand")))
>- (const_string "V16SF")
>- (ior (match_test "TARGET_SSE_PARTIAL_REG_DEPENDENCY")
>+ (cond [(ior (match_test "TARGET_SSE_PARTIAL_REG_DEPENDENCY")
> (match_test "TARGET_SSE_SPLIT_REGS"))
> (const_string "V4SF")
> ]
>diff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md
>index c1e0f2c411e..9c3808338d3 100644
>--- a/gcc/config/i386/mmx.md
>+++ b/gcc/config/i386/mmx.md
>@@ -115,29 +115,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- switch (get_attr_mode (insn))
>- {
>- case MODE_DI:
>- /* Handle broken assemblers that require movd instead of movq. */
>- if (!HAVE_AS_IX86_INTERUNIT_MOVQ
>- && (GENERAL_REG_P (operands[0]) || GENERAL_REG_P (operands[1])))
>- return "%vmovd\t{%1, %0|%0, %1}";
>- return "%vmovq\t{%1, %0|%0, %1}";
>- case MODE_TI:
>- return "%vmovdqa\t{%1, %0|%0, %1}";
>- case MODE_XI:
>- return "vmovdqa64\t{%g1, %g0|%g0, %g1}";
>-
>- case MODE_V2SF:
>- if (TARGET_AVX && REG_P (operands[0]))
>- return "vmovlps\t{%1, %0, %0|%0, %0, %1}";
>- return "%vmovlps\t{%1, %0|%0, %1}";
>- case MODE_V4SF:
>- return "%vmovaps\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -186,10 +164,7 @@
> (cond [(eq_attr "alternative" "2")
> (const_string "SI")
> (eq_attr "alternative" "11,12")
>- (cond [(ior (match_operand 0 "ext_sse_reg_operand")
>- (match_operand 1 "ext_sse_reg_operand"))
>- (const_string "XI")
>- (match_test "<MODE>mode == V2SFmode")
>+ (cond [(match_test "<MODE>mode == V2SFmode")
> (const_string "V4SF")
> (ior (not (match_test "TARGET_SSE2"))
> (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL"))
>diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
>index 865947debcc..99226e86436 100644
>--- a/gcc/config/i386/predicates.md
>+++ b/gcc/config/i386/predicates.md
>@@ -54,11 +54,6 @@
> (and (match_code "reg")
> (match_test "SSE_REGNO_P (REGNO (op))")))
>
>-;; True if the operand is an AVX-512 new register.
>-(define_predicate "ext_sse_reg_operand"
>- (and (match_code "reg")
>- (match_test "EXT_REX_SSE_REGNO_P (REGNO (op))")))
>-
> ;; Return true if op is a QImode register.
> (define_predicate "any_QIreg_operand"
> (and (match_code "reg")
>diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
>index 5dc0930ac1f..2014f0a7832 100644
>--- a/gcc/config/i386/sse.md
>+++ b/gcc/config/i386/sse.md
>@@ -982,98 +982,7 @@
> return standard_sse_constant_opcode (insn, operands);
>
> case TYPE_SSEMOV:
>- /* There is no evex-encoded vmov* for sizes smaller than 64-bytes
>- in avx512f, so we need to use workarounds, to access sse registers
>- 16-31, which are evex-only. In avx512vl we don't need workarounds. */
>- if (TARGET_AVX512F && <MODE_SIZE> < 64 && !TARGET_AVX512VL
>- && (EXT_REX_SSE_REG_P (operands[0])
>- || EXT_REX_SSE_REG_P (operands[1])))
>- {
>- if (memory_operand (operands[0], <MODE>mode))
>- {
>- if (<MODE_SIZE> == 32)
>- return "vextract<shuffletype>64x4\t{$0x0, %g1, %0|%0, %g1, 0x0}";
>- else if (<MODE_SIZE> == 16)
>- return "vextract<shuffletype>32x4\t{$0x0, %g1, %0|%0, %g1, 0x0}";
>- else
>- gcc_unreachable ();
>- }
>- else if (memory_operand (operands[1], <MODE>mode))
>- {
>- if (<MODE_SIZE> == 32)
>- return "vbroadcast<shuffletype>64x4\t{%1, %g0|%g0, %1}";
>- else if (<MODE_SIZE> == 16)
>- return "vbroadcast<shuffletype>32x4\t{%1, %g0|%g0, %1}";
>- else
>- gcc_unreachable ();
>- }
>- else
>- /* Reg -> reg move is always aligned. Just use wider move. */
>- switch (get_attr_mode (insn))
>- {
>- case MODE_V8SF:
>- case MODE_V4SF:
>- return "vmovaps\t{%g1, %g0|%g0, %g1}";
>- case MODE_V4DF:
>- case MODE_V2DF:
>- return "vmovapd\t{%g1, %g0|%g0, %g1}";
>- case MODE_OI:
>- case MODE_TI:
>- return "vmovdqa64\t{%g1, %g0|%g0, %g1}";
>- default:
>- gcc_unreachable ();
>- }
>- }
>-
>- switch (get_attr_mode (insn))
>- {
>- case MODE_V16SF:
>- case MODE_V8SF:
>- case MODE_V4SF:
>- if (misaligned_operand (operands[0], <MODE>mode)
>- || misaligned_operand (operands[1], <MODE>mode))
>- return "%vmovups\t{%1, %0|%0, %1}";
>- else
>- return "%vmovaps\t{%1, %0|%0, %1}";
>-
>- case MODE_V8DF:
>- case MODE_V4DF:
>- case MODE_V2DF:
>- if (misaligned_operand (operands[0], <MODE>mode)
>- || misaligned_operand (operands[1], <MODE>mode))
>- return "%vmovupd\t{%1, %0|%0, %1}";
>- else
>- return "%vmovapd\t{%1, %0|%0, %1}";
>-
>- case MODE_OI:
>- case MODE_TI:
>- if (misaligned_operand (operands[0], <MODE>mode)
>- || misaligned_operand (operands[1], <MODE>mode))
>- return TARGET_AVX512VL
>- && (<MODE>mode == V4SImode
>- || <MODE>mode == V2DImode
>- || <MODE>mode == V8SImode
>- || <MODE>mode == V4DImode
>- || TARGET_AVX512BW)
>- ? "vmovdqu<ssescalarsize>\t{%1, %0|%0, %1}"
>- : "%vmovdqu\t{%1, %0|%0, %1}";
>- else
>- return TARGET_AVX512VL ? "vmovdqa64\t{%1, %0|%0, %1}"
>- : "%vmovdqa\t{%1, %0|%0, %1}";
>- case MODE_XI:
>- if (misaligned_operand (operands[0], <MODE>mode)
>- || misaligned_operand (operands[1], <MODE>mode))
>- return (<MODE>mode == V16SImode
>- || <MODE>mode == V8DImode
>- || TARGET_AVX512BW)
>- ? "vmovdqu<ssescalarsize>\t{%1, %0|%0, %1}"
>- : "vmovdqu64\t{%1, %0|%0, %1}";
>- else
>- return "vmovdqa64\t{%1, %0|%0, %1}";
>-
>- default:
>- gcc_unreachable ();
>- }
>+ return ix86_output_ssemov (insn, operands);
>
> default:
> gcc_unreachable ();
>@@ -1082,10 +991,7 @@
> [(set_attr "type" "sselog1,sselog1,ssemov,ssemov")
> (set_attr "prefix" "maybe_vex")
> (set (attr "mode")
>- (cond [(and (eq_attr "alternative" "1")
>- (match_test "TARGET_AVX512VL"))
>- (const_string "<sseinsnmode>")
>- (and (match_test "<MODE_SIZE> == 16")
>+ (cond [(and (match_test "<MODE_SIZE> == 16")
> (ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
> (and (eq_attr "alternative" "3")
> (match_test "TARGET_SSE_TYPELESS_STORES"))))
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-2a.c b/gcc/testsuite/gcc.target/i386/pr89229-2a.c
>new file mode 100644
>index 00000000000..0cf78039481
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-2a.c
>@@ -0,0 +1,15 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512" } */
>+
>+typedef __int128 __m128t __attribute__ ((__vector_size__ (16),
>+ __may_alias__));
>+
>+__m128t
>+foo1 (void)
>+{
>+ register __int128 xmm16 __asm ("xmm16") = (__int128) -1;
>+ asm volatile ("" : "+v" (xmm16));
>+ return (__m128t) xmm16;
>+}
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-2b.c b/gcc/testsuite/gcc.target/i386/pr89229-2b.c
>new file mode 100644
>index 00000000000..8d5d6c41d30
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-2b.c
>@@ -0,0 +1,13 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+typedef __int128 __m128t __attribute__ ((__vector_size__ (16),
>+ __may_alias__));
>+
>+__m128t
>+foo1 (void)
>+{
>+ register __int128 xmm16 __asm ("xmm16") = (__int128) -1; /* { dg-error "register specified for 'xmm16'" } */
>+ asm volatile ("" : "+v" (xmm16));
>+ return (__m128t) xmm16;
>+}
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-2c.c b/gcc/testsuite/gcc.target/i386/pr89229-2c.c
>new file mode 100644
>index 00000000000..218da46dcd0
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-2c.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-2a.c"
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-3a.c b/gcc/testsuite/gcc.target/i386/pr89229-3a.c
>new file mode 100644
>index 00000000000..fd56f447016
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-3a.c
>@@ -0,0 +1,17 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512" } */
>+
>+extern int i;
>+
>+int
>+foo1 (void)
>+{
>+ register int xmm16 __asm ("xmm16") = i;
>+ asm volatile ("" : "+v" (xmm16));
>+ register int xmm17 __asm ("xmm17") = xmm16;
>+ asm volatile ("" : "+v" (xmm17));
>+ return xmm17;
>+}
>+
>+/* { dg-final { scan-assembler-times "vmovdqa32\[^\n\r]*xmm1\[67]\[^\n\r]*xmm1\[67]" 1 } } */
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-3b.c b/gcc/testsuite/gcc.target/i386/pr89229-3b.c
>new file mode 100644
>index 00000000000..9265fc0354b
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-3b.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+#include "pr89229-3a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovdqa32\[^\n\r]*zmm1\[67]\[^\n\r]*zmm1\[67]" 1 } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-3c.c b/gcc/testsuite/gcc.target/i386/pr89229-3c.c
>new file mode 100644
>index 00000000000..d3fdf1ee273
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-3c.c
>@@ -0,0 +1,7 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-3a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovdqa32\[^\n\r]*xmm1\[67]\[^\n\r]*xmm1\[67]" 1 } } */
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-4a.c b/gcc/testsuite/gcc.target/i386/pr89229-4a.c
>new file mode 100644
>index 00000000000..cb9b071e873
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-4a.c
>@@ -0,0 +1,17 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+extern long long i;
>+
>+long long
>+foo1 (void)
>+{
>+ register long long xmm16 __asm ("xmm16") = i;
>+ asm volatile ("" : "+v" (xmm16));
>+ register long long xmm17 __asm ("xmm17") = xmm16;
>+ asm volatile ("" : "+v" (xmm17));
>+ return xmm17;
>+}
>+
>+/* { dg-final { scan-assembler-times "vmovdqa64\[^\n\r]*xmm1\[67]\[^\n\r]*xmm1\[67]" 1 } } */
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-4b.c b/gcc/testsuite/gcc.target/i386/pr89229-4b.c
>new file mode 100644
>index 00000000000..023e81253a0
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-4b.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+#include "pr89229-4a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovdqa32\[^\n\r]*zmm1\[67]\[^\n\r]*zmm1\[67]" 1 } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-4c.c b/gcc/testsuite/gcc.target/i386/pr89229-4c.c
>new file mode 100644
>index 00000000000..e02eb37c16d
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-4c.c
>@@ -0,0 +1,7 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-4a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovdqa64\[^\n\r]*xmm1\[67]\[^\n\r]*xmm1\[67]" 1 } } */
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-5a.c b/gcc/testsuite/gcc.target/i386/pr89229-5a.c
>new file mode 100644
>index 00000000000..856115b2f5a
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-5a.c
>@@ -0,0 +1,16 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512" } */
>+
>+extern float d;
>+
>+void
>+foo1 (float x)
>+{
>+ register float xmm16 __asm ("xmm16") = x;
>+ asm volatile ("" : "+v" (xmm16));
>+ register float xmm17 __asm ("xmm17") = xmm16;
>+ asm volatile ("" : "+v" (xmm17));
>+ d = xmm17;
>+}
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-5b.c b/gcc/testsuite/gcc.target/i386/pr89229-5b.c
>new file mode 100644
>index 00000000000..cb0f3b55ccc
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-5b.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+#include "pr89229-5a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovaps\[^\n\r]*zmm1\[67]\[^\n\r]*zmm1\[67]" 1 } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-5c.c b/gcc/testsuite/gcc.target/i386/pr89229-5c.c
>new file mode 100644
>index 00000000000..529a520133c
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-5c.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-5a.c"
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-6a.c b/gcc/testsuite/gcc.target/i386/pr89229-6a.c
>new file mode 100644
>index 00000000000..f88d7c8d74c
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-6a.c
>@@ -0,0 +1,16 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512" } */
>+
>+extern double d;
>+
>+void
>+foo1 (double x)
>+{
>+ register double xmm16 __asm ("xmm16") = x;
>+ asm volatile ("" : "+v" (xmm16));
>+ register double xmm17 __asm ("xmm17") = xmm16;
>+ asm volatile ("" : "+v" (xmm17));
>+ d = xmm17;
>+}
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-6b.c b/gcc/testsuite/gcc.target/i386/pr89229-6b.c
>new file mode 100644
>index 00000000000..316d85d921e
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-6b.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+#include "pr89229-6a.c"
>+
>+/* { dg-final { scan-assembler-times "vmovapd\[^\n\r]*zmm1\[67]\[^\n\r]*zmm1\[67]" 1 } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-6c.c b/gcc/testsuite/gcc.target/i386/pr89229-6c.c
>new file mode 100644
>index 00000000000..7a4d254670c
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-6c.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-6a.c"
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-7a.c b/gcc/testsuite/gcc.target/i386/pr89229-7a.c
>new file mode 100644
>index 00000000000..fcb85c366b6
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-7a.c
>@@ -0,0 +1,16 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512" } */
>+
>+extern __float128 d;
>+
>+void
>+foo1 (__float128 x)
>+{
>+ register __float128 xmm16 __asm ("xmm16") = x;
>+ asm volatile ("" : "+v" (xmm16));
>+ register __float128 xmm17 __asm ("xmm17") = xmm16;
>+ asm volatile ("" : "+v" (xmm17));
>+ d = xmm17;
>+}
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-7b.c b/gcc/testsuite/gcc.target/i386/pr89229-7b.c
>new file mode 100644
>index 00000000000..37eb83c783b
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-7b.c
>@@ -0,0 +1,12 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mno-avx512vl" } */
>+
>+extern __float128 d;
>+
>+void
>+foo1 (__float128 x)
>+{
>+ register __float128 xmm16 __asm ("xmm16") = x; /* { dg-error "register specified for 'xmm16'" } */
>+ asm volatile ("" : "+v" (xmm16));
>+ d = xmm16;
>+}
>diff --git a/gcc/testsuite/gcc.target/i386/pr89229-7c.c b/gcc/testsuite/gcc.target/i386/pr89229-7c.c
>new file mode 100644
>index 00000000000..e37ff2bf5bd
>--- /dev/null
>+++ b/gcc/testsuite/gcc.target/i386/pr89229-7c.c
>@@ -0,0 +1,6 @@
>+/* { dg-do compile { target { ! ia32 } } } */
>+/* { dg-options "-O2 -march=skylake-avx512 -mprefer-vector-width=512" } */
>+
>+#include "pr89229-7a.c"
>+
>+/* { dg-final { scan-assembler-not "%zmm\[0-9\]+" } } */
>--
>2.20.1
>
>From gcc-bugs-return-634853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 16:35:59 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Fri, 22 Feb 2019 16:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89324
--- Comment #5 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Author: matmal01
Date: Fri Feb 22 16:35:22 2019
New Revision: 269122
URL: https://gcc.gnu.org/viewcvs?rev=269122&root=gcc&view=rev
Log:
Handle stack pointer with SUBS/ADDS instructions.
In general the stack pointer was not handled for many SUBS/ADDS patterns in
aarch64.md.
Both the "extended register" and "immediate" forms allow the stack pointer to
be
used as the source register, while no form allows the stack pointer for the
destination register.
The define_insn patterns generating ADDS/SUBS did not allow the stack pointer
for any operand, while the define_peephole2 patterns that generated RTX to be
matched by these patterns allowed the stack pointer for any operand.
The patterns are fixed by adding the 'k' constraint for the first source
operand
to all define_insns that generate the ADDS/SUBS "extended register" and
"immediate" forms (but not the "shifted register" form).
In peephole optimizations, constraint strings are ignored (see "(gccint) C
Constraint Interface" info node in the documentation), so the decision to act
or
not is based solely on the predicate and condition.
This patch introduces a new predicate "aarch64_general_reg" to be used in
define_peephole2 patterns where only GENERAL_REGS registers are acceptable and
uses that predicate in the peepholes that generate patterns for ADDS/SUBS.
Full bootstrap and regtest done on aarch64-none-linux-gnu.
Regression tests done on aarch64-none-linux-gnu and aarch64-none-elf cross
compiler.
OK for trunk?
gcc/ChangeLog:
2019-02-22 Matthew Malcomson <matthew.malcomson@arm.com>
PR target/89324
* config/aarch64/aarch64.md: Use aarch64_general_reg predicate on
destination register in peepholes generating patterns for ADDS/SUBS.
(add<mode>3_compare0,
*addsi3_compare0_uxtw, add<mode>3_compareC,
add<mode>3_compareV_imm, add<mode>3_compareV,
*adds_<optab><ALLX:mode>_<GPI:mode>,
*subs_<optab><ALLX:mode>_<GPI:mode>,
*adds_<optab><ALLX:mode>_shift_<GPI:mode>,
*subs_<optab><ALLX:mode>_shift_<GPI:mode>,
*adds_<optab><mode>_multp2, *subs_<optab><mode>_multp2,
*sub<mode>3_compare0, *subsi3_compare0_uxtw,
sub<mode>3_compare1): Allow stack pointer for source register.
* config/aarch64/predicates.md (aarch64_general_reg): New predicate.
gcc/testsuite/ChangeLog:
2019-02-22 Matthew Malcomson <matthew.malcomson@arm.com>
PR target/89324
* gcc.dg/rtl/aarch64/subs_adds_sp.c: New test.
* gfortran.fortran-torture/compile/pr89324.f90: New test.
Added:
trunk/gcc/testsuite/gcc.dg/rtl/aarch64/subs_adds_sp.c
trunk/gcc/testsuite/gfortran.fortran-torture/compile/pr89324.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64.md
trunk/gcc/config/aarch64/predicates.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 16:39:24 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Fri, 22 Feb 2019 16:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87761
--- Comment #13 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Feb 22 16:38:43 2019
New Revision: 269123
URL: https://gcc.gnu.org/viewcvs?rev=269123&root=gcc&view=rev
Log:
PR rtl-optimization/87761
* config/mips/mips.md: Add new combiner pattern to recognize
a bitfield extraction using (ashiftrt (truncate (ashift (...)))).
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mips/mips.md
>From gcc-bugs-return-634855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 16:41:43 2019
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89445
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Indeed. Before that change we have:
Trying 36, 47 -> 51:
36: r117:V8DF=vec_merge([r107:DI+r103:DI],const_vector,r90:HI#0)
47: r124:V8DF={r117:V8DF*r94:V8DF+r121:V8DF}
REG_DEAD r121:V8DF
REG_DEAD r117:V8DF
51: [r100:DI]=vec_merge(r124:V8DF,[r100:DI],r90:HI#0)
REG_DEAD r100:DI
REG_DEAD r124:V8DF
Failed to match this instruction:
(set (mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(vec_merge:V8DF (fma:V8DF (vec_merge:V8DF (mem:V8DF (plus:DI (reg/v/f:DI
107 [ x ])
(reg/v:DI 103 [ i ])) [0 S64 A8])
(const_vector:V8DF [
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
(const_double:DF 0.0 [0x0.0p+0])
])
(subreg:QI (reg/v:HI 90 [ mask ]) 0))
(reg:V8DF 94 [ _18 ])
(reg:V8DF 121))
(mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(subreg:QI (reg/v:HI 90 [ mask ]) 0)))
With the change:
Trying 36, 47 -> 51:
36: r117:V8DF=vec_merge([r107:DI+r103:DI],const_vector,r90:HI#0)
47: r124:V8DF={r117:V8DF*r94:V8DF+r121:V8DF}
REG_DEAD r121:V8DF
REG_DEAD r117:V8DF
51: [r100:DI]=vec_merge(r124:V8DF,[r100:DI],r90:HI#0)
REG_DEAD r100:DI
REG_DEAD r124:V8DF
Failed to match this instruction:
(set (mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(vec_merge:V8DF (fma:V8DF (mem:V8DF (plus:DI (reg/v/f:DI 107 [ x ])
(reg/v:DI 103 [ i ])) [0 S64 A8])
(reg:V8DF 94 [ _18 ])
(reg:V8DF 121))
(mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(subreg:QI (reg/v:HI 90 [ mask ]) 0)))
Successfully matched this instruction:
(set (reg:V8DF 124)
(fma:V8DF (mem:V8DF (plus:DI (reg/v/f:DI 107 [ x ])
(reg/v:DI 103 [ i ])) [0 S64 A8])
(reg:V8DF 94 [ _18 ])
(reg:V8DF 121)))
Successfully matched this instruction:
(set (mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(vec_merge:V8DF (reg:V8DF 124)
(mem:V8DF (reg/f:DI 100 [ _30 ]) [0 S64 A8])
(subreg:QI (reg/v:HI 90 [ mask ]) 0)))
Something like simplify_merge_mask can be done only if there are MEMs involved
in the operand (or guaranteed not to trap through MEM_NOTRAP_P) and if all the
operations don't have trap states or similar issues (so no floating point ops
nor division by zero, anything else?).
In theory, if the second argument in both inner and outer VEC_MERGE is
CONST_VECTOR and we could prove that feeding that constant into the operation
would result in that same value always, we could optimize away the outer
VEC_MERGE rather than inner, but I guess with floating point ops and signed
zero etc. even that might be hard.
So, shall we just revert that commit until it is fixed, or is there an easy way
to avoid doing it in the problematic cases?
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Subject: [Bug target/89324] [9 Regression] ICE in extract_constrain_insn, at recog.c:2211 on aarch64
Date: Fri, 22 Feb 2019 16:52:00 -0000
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Matthew Malcomson <matmal01 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-634858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 16:58:35 2019
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> Not just
> while (__i < __n && __builtin_constant_p(__a[__i]))
> ?
Yeah that's what I'm testing, not sure where the (i < n && __bcp && i < n)
version came from!
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Subject: [Bug tree-optimization/86259] [8/9 Regression] min(4, strlen(s)) optimized to strlen(s) with -flto
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--- Comment #35 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
at least gcc 9 has been fixed.
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Something like:
--- gcc/simplify-rtx.c.jj 2019-01-10 11:43:14.390377646 +0100
+++ gcc/simplify-rtx.c 2019-02-22 17:54:36.633829649 +0100
@@ -6073,8 +6073,10 @@ simplify_ternary_operation (enum rtx_cod
if (!side_effects_p (op2))
{
- rtx top0 = simplify_merge_mask (op0, op2, 0);
- rtx top1 = simplify_merge_mask (op1, op2, 1);
+ rtx top0
+ = may_trap_p (op0) ? NULL_RTX : simplify_merge_mask (op0, op2, 0);
+ rtx top1
+ = may_trap_p (op1) ? NULL_RTX : simplify_merge_mask (op1, op2, 1);
if (top0 || top1)
return simplify_gen_ternary (code, mode, mode,
top0 ? top0 : op0,
fixes this, except that it seems may_trap_p_1 isn't really ready to handle
vectors (or do they never trap, that would surprise me).
E.g.
default:
/* Any floating arithmetic may trap. */
if (SCALAR_FLOAT_MODE_P (GET_MODE (x)) && flag_trapping_math)
return 1;
Shouldn't that really be FLOAT_MODE_P instead of SCALAR_FLOAT_MODE_P?
For DIV etc. the above plus:
if (!CONSTANT_P (XEXP (x, 1)) || (XEXP (x, 1) == const0_rtx))
return 1;
wouldn't we want test for vector integer divisions (does any target have them,
maybe mips?) if all the elements of a CONST_VECTOR are non-zero?
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
vmovupd (%rsi,%rax), %zmm1{%k1}{z}
addq %rdx, %rax
vmovupd (%rax), %zmm2{%k1}{z}
vfmadd132pd %zmm0, %zmm2, %zmm1
vmovupd %zmm1, (%rax){%k1}
isn't optimal btw, it would be nice if we could merge that masking into the
vfmadd132pd instruction, like:
vmovupd (%rsi,%rax), %zmm1{%k1}{z}
addq %rdx, %rax
vfmadd132pd (%rax), %zmm2, %zmm1%{k1}{z}
vmovupd %zmm1, (%rax){%k1}
but not really sure how to achieve that.
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Subject: [Bug tree-optimization/85762] [8/9 Regression] range-v3 abstraction overhead not optimized away
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--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
The problem is that we now consider MEM_REFs loading a different type
than the one of the underlying DECL as V_C_E and are equally careful
about it.
I this particular case, we have statements like.
MEM[(struct box *)&D.389258].value = pos
Where D.363334 is of type struct adaptor_cursor. If we follow the
chain of first non-method fields, we get struct adaptor_cursor ->
struct adaptor_value_type_ -> struct adaptor_value_type_2_ -> struct
compressed_pair -> struct tagged -> struct getter -> struct getter ->
struct compressed_tuple_ -> struct box, which is the type of the
MEM_REF itself.
So the MEM_REF is not really a V_C_E but instead represents a bunch of
COMPONENT_REFs. The following patch makes all of the overhead go away
but I guess the type walking results should be cached somehow and it
also only works for MEM_REFs with zero offset, I'm not sure how likely
it is to get MEM_REFs with equal semantics for fields with non-zero
offset.
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index eeef31ba496..e94d01e0ffa 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -1169,10 +1169,27 @@ contains_vce_or_bfcref_p (const_tree ref)
|| TREE_CODE (TREE_OPERAND (ref, 0)) != ADDR_EXPR)
return false;
- tree mem = TREE_OPERAND (TREE_OPERAND (ref, 0), 0);
+ tree mem_type = TREE_TYPE (TREE_OPERAND (TREE_OPERAND (ref, 0), 0));
if (TYPE_MAIN_VARIANT (TREE_TYPE (ref))
- != TYPE_MAIN_VARIANT (TREE_TYPE (mem)))
- return true;
+ != TYPE_MAIN_VARIANT (mem_type))
+ {
+ while (TREE_CODE (mem_type) == RECORD_TYPE)
+ {
+ tree fld;
+ for (fld = TYPE_FIELDS (mem_type); fld; fld = DECL_CHAIN (fld))
+ if (TREE_CODE (fld) == FIELD_DECL)
+ {
+ if (TYPE_MAIN_VARIANT (TREE_TYPE (ref))
+ == TYPE_MAIN_VARIANT (TREE_TYPE (fld)))
+ return false;
+ mem_type = TREE_TYPE (fld);
+ break;
+ }
+ if (!fld)
+ break;
+ }
+ return true;
+ }
return false;
}
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Subject: [Bug c++/88853] ICE: verify_type failed (error: type variant differs by TYPE_PACKED)
Date: Fri, 22 Feb 2019 17:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88853
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Feb 22 17:38:11 2019
New Revision: 269125
URL: https://gcc.gnu.org/viewcvs?rev=269125&root=gcc&view=rev
Log:
PR tree-optimization/88993 - GCC 9 -Wformat-overflow=2 should reflect real libc
limits
PR tree-optimization/88835 - overly aggressive -Werror=format-overflow for
printf
gcc/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gimple-ssa-sprintf.c (sprintf_dom_walker::call_info::is_file_func):
New helper.
(sprintf_dom_walker::call_info::is_string_func): New helper.
(format_directive): Only issue "may exceed" 4095/INT_MAX warnings
for formatted string functions.
(sprintf_dom_walker::handle_gimple_call): Fix a typo in a comment.
gcc/testsuite/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gcc.dg/tree-ssa/builtin-fprintf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-printf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-snprintf-warn-3.c: Adjust.
* gcc.dg/tree-ssa/builtin-sprintf-warn-18.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-fprintf-warn-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-printf-warn-2.c
Modified:
trunk/gcc/gimple-ssa-sprintf.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-18.c
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Subject: [Bug tree-optimization/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
Date: Fri, 22 Feb 2019 17:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88993
--- Comment #14 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Feb 22 17:38:11 2019
New Revision: 269125
URL: https://gcc.gnu.org/viewcvs?rev=269125&root=gcc&view=rev
Log:
PR tree-optimization/88993 - GCC 9 -Wformat-overflow=2 should reflect real libc
limits
PR tree-optimization/88835 - overly aggressive -Werror=format-overflow for
printf
gcc/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gimple-ssa-sprintf.c (sprintf_dom_walker::call_info::is_file_func):
New helper.
(sprintf_dom_walker::call_info::is_string_func): New helper.
(format_directive): Only issue "may exceed" 4095/INT_MAX warnings
for formatted string functions.
(sprintf_dom_walker::handle_gimple_call): Fix a typo in a comment.
gcc/testsuite/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gcc.dg/tree-ssa/builtin-fprintf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-printf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-snprintf-warn-3.c: Adjust.
* gcc.dg/tree-ssa/builtin-sprintf-warn-18.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-fprintf-warn-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-printf-warn-2.c
Modified:
trunk/gcc/gimple-ssa-sprintf.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-18.c
>From gcc-bugs-return-634863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 17:38:58 2019
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Fri, 22 Feb 2019 17:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Feb 22 17:38:11 2019
New Revision: 269125
URL: https://gcc.gnu.org/viewcvs?rev=269125&root=gcc&view=rev
Log:
PR tree-optimization/88993 - GCC 9 -Wformat-overflow=2 should reflect real libc
limits
PR tree-optimization/88835 - overly aggressive -Werror=format-overflow for
printf
gcc/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gimple-ssa-sprintf.c (sprintf_dom_walker::call_info::is_file_func):
New helper.
(sprintf_dom_walker::call_info::is_string_func): New helper.
(format_directive): Only issue "may exceed" 4095/INT_MAX warnings
for formatted string functions.
(sprintf_dom_walker::handle_gimple_call): Fix a typo in a comment.
gcc/testsuite/ChangeLog:
PR tree-optimization/88993
PR tree-optimization/88853
* gcc.dg/tree-ssa/builtin-fprintf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-printf-warn-2.c: New test.
* gcc.dg/tree-ssa/builtin-snprintf-warn-3.c: Adjust.
* gcc.dg/tree-ssa/builtin-sprintf-warn-18.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-fprintf-warn-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-printf-warn-2.c
Modified:
trunk/gcc/gimple-ssa-sprintf.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-3.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-18.c
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
Bug 88835 depends on bug 88993, which changed state.
Bug 88993 Summary: [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88993
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug tree-optimization/85741] [meta-bug] bogus/missing -Wformat-overflow
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85741
Bug 85741 depends on bug 88993, which changed state.
Bug 88993 Summary: [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88993
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-634865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 17:40:06 2019
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Subject: [Bug tree-optimization/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has been relaxed for GCC 9 in r269125.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85741
Bug 85741 depends on bug 88835, which changed state.
Bug 88835 Summary: overly aggressive -Werror=format-overflow for printf since r265648
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has been relaxed for GCC 9 in r269125.
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Subject: [Bug c++/81431] add warning for missing initializers in constructor
Date: Fri, 22 Feb 2019 17:47:00 -0000
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #3)
> I would prefer to see -Weffc++ deprecated and removed, so tying this valid
> request to -Weffc++ might see it die.
If bug 16166 is fixed, then this request would be tied to whichever suboption
the warning is moved to, rather than to -Weffc++ itself. Splitting -Weffc++ up
could be a step to deprecating/removing it.
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Subject: [Bug tree-optimization/87609] [7/8 Regression] miscompilation with restrict and loop
Date: Fri, 22 Feb 2019 17:57:00 -0000
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 22 17:56:59 2019
New Revision: 269127
URL: https://gcc.gnu.org/viewcvs?rev=269127&root=gcc&view=rev
Log:
2019-02-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/87609
* tree-cfg.c (gimple_duplicate_bb): Only remap inlined cliques.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-cfg.c
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Subject: [Bug c++/4898] adding an option to verify exception specifications [-Wexceptions]
Date: Fri, 22 Feb 2019 18:04:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |87403
Summary|adding an option to verify |adding an option to verify
|exception specifications |exception specifications
| |[-Wexceptions]
--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> (In reply to Martin Sebor from comment #2)
> > I agree a new warning would be useful. For example, the following code should
> > be diagnosed:
> >
> > struct S { S () throw () { throw 0; } };
>
> This is still relevant in current standards, where throw() is equivalent to
> noexcept.
>
> Clang warns:
>
> throw.cc:1:28: warning: 'S' has a non-throwing exception specification but
> can still throw [-Wexceptions]
> struct S { S () throw () { throw 0; } };
> ^
> throw.cc:1:12: note: function declared non-throwing here
> struct S { S () throw () { throw 0; } };
> ^ ~~~~~~~~
> 1 warning generated.
>
Having a -Wexceptions like clang's would be a useful new warning; thus, making
this block the new-warning meta-bug
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] [Meta-bug] Issues that suggest a new warning
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Subject: [Bug other/704] --help and --version
Date: Fri, 22 Feb 2019 18:05:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #17 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #16)
> (In reply to Iain Sandoe from comment #15)
> > Author: iains
> > Date: Wed Aug 22 12:12:46 2018
> > New Revision: 263768
> >
> > URL: https://gcc.gnu.org/viewcvs?rev=263768&root=gcc&view=rev
> > Log:
> > Make the gcc-ar,nm, strip tools respond correctly to --help and --version
> > when there's no plugin built.
> >
> > gcc/
> >
> > PR other/704
> > * gcc-ar.c (main): Don’t try to invoke the plug-in if we’re not
> > building it.
> >
> >
> > Modified:
> > trunk/gcc/ChangeLog
> > trunk/gcc/gcc-ar.c
>
> So can this be closed now?
WAITING on a reply
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Subject: [Bug tree-optimization/87008] [8/9 Regression] gimple mem-to-mem assignment badly optimized
Date: Fri, 22 Feb 2019 18:08:00 -0000
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--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #1)
> struct A { double a, b; };
> struct B : A {};
> template<class T>void cp(T&a,T const&b){a=b;}
> double f(B x){
> B y; cp<A>(y,x);
> B z; cp<A>(z,x);
> return y.a - z.a;
> }
>
> This is not quite equivalent because RTL manages to optimize this case, but
> gimple, with -Ofast, still gets the ugly:
>
> ISRA.1 = MEM[(const struct A &)&x];
> SR.9_9 = MEM[(struct A *)&ISRA.1];
> ISRA.1 = MEM[(const struct A &)&x];
> SR.8_10 = MEM[(struct A *)&ISRA.1];
> _3 = SR.9_9 - SR.8_10;
> return _3;
>
> Writing cp<B> instead of cp<A> makes it work, and the main difference starts
> in SRA. I expect (didn't check) this is another victim of r255510 .
Indeed, with the proof-of-concept patch from PR 85762, this gets optimized
into:
<bb 2> [local count: 1073741824]:
SR.7_2 = MEM[(const struct A &)&x];
_3 = SR.7_2 - SR.7_2;
return _3;
with -O2 and to retrn 0 with -Ofast.
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Subject: [Bug target/89455] New: [9 Regression] FAIL: g++.target/i386/mv16.C on Westmere
Date: Fri, 22 Feb 2019 18:20:00 -0000
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Bug ID: 89455
Summary: [9 Regression] FAIL: g++.target/i386/mv16.C on
Westmere
Product: gcc
Version: 9.0
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Target: i386,x86-64
Since r263989 has been re-applied, I got
FAIL: g++.target/i386/mv16.C -std=gnu++14 execution test
FAIL: g++.target/i386/mv16.C -std=gnu++17 execution test
FAIL: g++.target/i386/mv16.C -std=gnu++98 execution test
on Westmere.
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Subject: [Bug tree-optimization/85459] [8/9 Regression] Larger code generated from GMP template meta-programming
Date: Fri, 22 Feb 2019 18:23:00 -0000
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--- Comment #9 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Given that this is related to r255510, I tried out the proof-of concept patch
from PR 85762 first too and it shrunk text size (compiled with -O3 and Monday
trunk) from 901 to 417. So very likely the same issue.
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45800
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45800&action=edit
gcc9-pr89445.patch
Full untested fix.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89453] Bug parsing "," operator with openmp
Date: Fri, 22 Feb 2019 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89453
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is not valid OpenMP, so it is perfectly fine it is rejected.
In OpenMP, you can't use arbitrary for (...) following the various loop
pragmas, they have various restrictions.
>From gcc-bugs-return-634879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 18:34:39 2019
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Subject: [Bug c/89453] Bug parsing "," operator with openmp
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See e.g. OpenMP 5.0 2.9.1 chapter, or OpenMP 4.5 2.6 chapter.
for (init-expr; test-expr; incr-expr) structured-block
init-expr
One of the following:
var = lb
integer-type var = lb
random-access-iterator-type var = lb
pointer-type var = lb
...
incr-expr
One of the following:
++var
var++
- - var
var - -
var += incr
var - = incr
var = var + incr
var = incr + var
var = var - incr
So both your init-expr and incr-expr are invalid.
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Subject: [Bug c++/88853] ICE: verify_type failed (error: type variant differs by TYPE_PACKED)
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Please ignore comment #1 -- wrong bug id in the commit.
>From gcc-bugs-return-634881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 18:45:47 2019
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 18:45:00 -0000
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
Would it make sense to have an attribute so this can be specified for each
enum, instead of globally?
>From gcc-bugs-return-634883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 18:46:32 2019
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Subject: [Bug fortran/32770] [Meta-bug] -fdefault-integer-8 issues
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Bug 32770 depends on bug 84509, which changed state.
Bug 84509 Summary: STOP and ERROR STOP statements with -fdefault-integer-8 and large stop code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84509
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----------------------------------------------------------------------------
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Resolution|--- |WONTFIX
>From gcc-bugs-return-634882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 18:46:31 2019
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Subject: [Bug fortran/84509] STOP and ERROR STOP statements with -fdefault-integer-8 and large stop code
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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--- Comment #4 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Closing this as WONTFIX, since GCC 8 has been released, and adding new ABI
entry points just for this corner case isn't worth it. Or if somebody feels
differently, please reopen and contribute a patch.
>From gcc-bugs-return-634884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 19:09:34 2019
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Subject: [Bug target/89456] New: target attribute doesn't work well with -march=native
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Bug ID: 89456
Summary: target attribute doesn't work well with -march=native
Product: gcc
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Target: i386,x86-64
-march=native is expanded to -march=xxx -myyy -mno-zzz. Whe compiling
int __attribute__ ((target("arch=broadwell"))) foo () {
return 13;
}
arch=broadwell won't set x_ix86_isa_flags since x_ix86_isa_flags_explicit
has been set via command line. As the result, all_ix86_isa_flags checks
in get_builtin_code_for_version will be wrong.
>From gcc-bugs-return-634885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 19:10:21 2019
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 19:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89450
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #0)
> Issues is that:
>
> 14746 /* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
> 14747 if (flag_strict_enums)
> 14748 set_min_and_max_values_for_integral_type (enumtype,
> precision, sgn);
>
> is called for precision, which sets min = 0 and max = 7.
Because that's how enums work in C++, as required by the standard.
That's not an issue.
> What about doing:
>
> diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
> index 612afbacd27..46302b4a61d 100644
> --- a/gcc/cp/decl.c
> +++ b/gcc/cp/decl.c
> @@ -14745,7 +14745,10 @@ finish_enum_value_list (tree enumtype)
>
> /* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
> if (flag_strict_enums)
> - set_min_and_max_values_for_integral_type (enumtype, precision, sgn);
> + {
> + TYPE_MIN_VALUE (enumtype) = minnode;
> + TYPE_MAX_VALUE (enumtype) = maxnode;
> + }
> }
> else
> underlying_type = ENUM_UNDERLYING_TYPE (enumtype);
>
> I can also imagine another option level when desired.
Please no. -fstrict-enums currently makes the compiler *more* strictly
conforming, by following the rules of the standard. Your suggestion arguably
makes it *less* conforming, by deciding that valid values should emit a
warning.
What you want is not how enums work in C++. Please don't abuse -fstrict-enums
when what you want is "some other kind of enum, not one that strictly follows
the C++ standard".
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89402
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 22 19:10:47 2019
New Revision: 269130
URL: https://gcc.gnu.org/viewcvs?rev=269130&root=gcc&view=rev
Log:
PR libstdc++/89402
* src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
type to std::size_t and argument to type to long double.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/c++98/compatibility-ldbl.cc
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Fri, 22 Feb 2019 19:16:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 45801
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45801&action=edit
A patch for the PR.
Once you had done the detective work, Thomas, the rest was pretty easy.
Basically, the fact that 'z' is a pointer is what throws it.
Bootstraps and retests OK.
The patch to trans-expr.c has a large offset because my ISO_Fortran_binding
patch is on the tree, awaiting a green light.
Cheers
Paul
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Subject: [Bug c++/4898] adding an option to verify exception specifications [-Wexceptions]
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=4898
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Why a new warning instead of making -Wterminate handle throw() as well as
noexcept ?
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Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
Date: Fri, 22 Feb 2019 19:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89420
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89420] [9 Regression] ICE: unexpected expression 'int()' of kind cast_expr
Date: Fri, 22 Feb 2019 19:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89420
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Feb 22 19:24:37 2019
New Revision: 269131
URL: https://gcc.gnu.org/viewcvs?rev=269131&root=gcc&view=rev
Log:
PR c++/89420 - ICE with CAST_EXPR in explicit-specifier.
* decl.c (build_explicit_specifier): Don't check
processing_template_decl. Call instantiation_dependent_expression_p
instead of value_dependent_expression_p. Call
instantiate_non_dependent_expr_sfinae before
build_converted_constant_expr instead of calling
instantiate_non_dependent_expr after it. Add
processing_template_decl_sentinel.
* g++.dg/cpp2a/explicit14.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/explicit14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89457] New: -madx doesn't generate ADX instructions
Date: Fri, 22 Feb 2019 19:51:00 -0000
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Bug ID: 89457
Summary: -madx doesn't generate ADX instructions
Product: gcc
Version: 9.0
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[hjl@gnu-4 pr89456]$ cat y.i
unsigned char
foo (unsigned char __CF, unsigned int __X,
unsigned int __Y, unsigned int *__P)
{
return __builtin_ia32_addcarryx_u32 (__CF, __X, __Y, __P);
}
[hjl@gnu-4 pr89456]$ gcc -S -O2 -madx y.i
[hjl@gnu-4 pr89456]$ cat y.s
.file "y.i"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
movzbl %dil, %edi
movl %edi, %eax
addb $-1, %al
adcl %edx, %esi
setc %al
movl %esi, (%rcx)
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (GNU) 8.2.1 20190215 (Red Hat 8.2.1-9)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-4 pr89456]$
I am expecting:
addb $-1, %dil
adcxl %edx, %esi
movl %esi, (%rcx)
setb %al
retq
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Subject: [Bug target/89456] target attribute doesn't work well with -mXXX
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-22
Summary|target attribute doesn't |target attribute doesn't
|work well with |work well with -mXXX
|-march=native |
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-4 pr89456]$ cat x.i
__attribute__ ((target("arch=broadwell")))
float
foo (float x, float y)
{
return y;
}
[hjl@gnu-4 pr89456]$ gcc -O2 -mavx -S x.i
x.i: In function ‘foo’:
x.i:4:1: error: SSE register return with SSE disabled
{
^
[hjl@gnu-4 pr89456]$
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Subject: [Bug ada/89349] segfault when building GCC 8 branch with GCC master
Date: Fri, 22 Feb 2019 20:18:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|raised STORAGE_ERROR : |segfault when building GCC
|stack overflow or erroneous |8 branch with GCC master
|memory access when building |
|GCC 8 branch with GCC |
|master |
--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
The backtrace is:
Program received signal SIGSEGV, Segmentation fault.
0x102254bc in __gnat_reset_attributes (
attr=0x1197f4d0 <osint.unknown_attributes>)
at /work/botcazou/gcc-8/src/gcc/ada/adaint.c:337
337 attr->exists = ATTR_UNSET;
(gdb) bt
#0 0x102254bc in __gnat_reset_attributes (
attr=0x1197f4d0 <osint.unknown_attributes>)
at /work/botcazou/gcc-8/src/gcc/ada/adaint.c:337
#1 0x104a4e54 in <osint___elabb> ()
at /work/botcazou/gcc-8/src/gcc/ada/osint.adb:3164
#2 0x106df57c in adainit () at ada/b_gnat1.adb:360
#3 0x1025b3e8 in gnat_parse_file ()
at /work/botcazou/gcc-8/src/gcc/ada/gcc-interface/misc.c:119
#4 0x10d36ba4 in compile_file () at /work/botcazou/gcc-8/src/gcc/toplev.c:455
#5 0x10d39d5c in do_compile () at /work/botcazou/gcc-8/src/gcc/toplev.c:2132
#6 toplev::main (this=this@entry=0xffd7f638, argc=<optimized out>,
argc@entry=35, argv=<optimized out>, argv@entry=0xffd7f8d4)
at /work/botcazou/gcc-8/src/gcc/toplev.c:2267
#7 0x11833de4 in main (argc=35, argv=0xffd7f8d4)
at /work/botcazou/gcc-8/src/gcc/main.c:39
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
It's a known historical quirk which has been fixed on the mainline:
2018-05-25 Arnaud Charlet <charlet@adacore.com>
* osint.ads (Unknown_Attributes): No longer pretend this is a constant.
(No_File_Info_Cache): Initialize separately.
* osint.adb (No_File_Info_Cache): Update initializer.
In osint.ads there is:
Unknown_Attributes : constant File_Attributes := (others => 0);
-- Will be initialized properly at elaboration (for efficiency later on,
-- avoid function calls every time we want to reset the attributes).
which is both put into read-only memory and written to later...
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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--- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
We have confirmed this is addressed in the standard, though, as usual, one has
to read two or three conditions and deduce it.
2018: Section 12.6.4.8.4. I am looking at how to fix.
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Subject: [Bug ada/89349] segfault when building GCC 8 branch with GCC master
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Testing a backport.
>From gcc-bugs-return-634897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 20:28:33 2019
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Subject: [Bug fortran/89431] CPP integer macros not defined
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89431
--- Comment #9 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Fri Feb 22 20:27:57 2019
New Revision: 269132
URL: https://gcc.gnu.org/viewcvs?rev=269132&root=gcc&view=rev
Log:
2019-02-22 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/89431
* gfortran.texi: Fix documentation to match the implementation.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.texi
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Subject: [Bug libfortran/52879] Pathological reseeding of PRNG generator genernates poor sequence
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Janne Blomqvist <jb at gcc dot gnu.org> ---
I think the current implementation has a decent protection against bad seeds,
so lets close this as fixed.
>From gcc-bugs-return-634899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 20:36:16 2019
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Subject: [Bug fortran/83057] OPEN without a filename and without STATUS='SCRATCH' could produce a warning
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83057
--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Fri Feb 22 20:35:38 2019
New Revision: 269134
URL: https://gcc.gnu.org/viewcvs?rev=269134&root=gcc&view=rev
Log:
2019-02-22 Harald Anlauf <anlauf@gmx.de>
PR fortran/83057
* io.c (gfc_match_open): Fix logic in checks of OPEN statement
when NEWUNIT= is specified.
PR fortran/83057
* gfortran.dg/newunit_6.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/newunit_6.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/io.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89431] CPP integer macros not defined
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
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--- Comment #10 from kargl at gcc dot gnu.org ---
Fixed on trunk. Closing.
>From gcc-bugs-return-634901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 20:44:26 2019
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/704] --help and --version
Date: Fri, 22 Feb 2019 20:44:00 -0000
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--- Comment #18 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Whether this is fixed may be determined by running all of the programs
installed in $exec_prefix/bin by current mainline with the --help and
--version options (and confirming the GCC version number is properly shown
in the --version output).
>From gcc-bugs-return-634902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 20:49:52 2019
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Subject: [Bug target/79251] PowerPC vec_insert generates store-hit-load if the element number is variable
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Verified this is still a problem in GCC 9.
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Subject: [Bug other/89458] New: adding aligned attribute to struct causes too much to be copied
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89458
Bug ID: 89458
Summary: adding aligned attribute to struct causes too much to
be copied
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: dnikitin at 3redpartners dot com
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If I add __attribute__ ((aligned (256))) to a small struct, the whole 256 bytes
are copied by the default copy constructor. I don't think it's correct. This is
with -O3 optimization. Attached is a piece of code to demo:
struct Obj {
void clone(Obj& r);
void clone2(Obj& r);
int a;
int b;
int c; int c1; int c2; int c3; long c4; long c5; long c6;
}__attribute__ ((aligned (256)));
void Obj::clone(Obj& r) {
*this = r;
}
built like so:
g++ -O3 -std=c++14 -march=skylake
The compilation result is a giant "clone" function that copies 256 bytes of
memory
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Subject: [Bug fortran/71066] [7/8 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Fri, 22 Feb 2019 21:03:00 -0000
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Fri Feb 22 21:02:40 2019
New Revision: 269135
URL: https://gcc.gnu.org/viewcvs?rev=269135&root=gcc&view=rev
Log:
2019-02-22 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
Backport from trunk
* trans-decl.c (generate_coarray_sym_init): For an array
constructor in a DATA statement of a coarray variable, set the
rank to 1 to avoid confusion later on. If the constructor
contains only one value, use that for initiailizig.
2019-02-12 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
Backport from trunk
* gfortran.dg/coarray_data_1.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/coarray_data_1.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-decl.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/82255] Vectorizer cost model overcounts cost of some vectorized loads
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.4 |10.0
>From gcc-bugs-return-634906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 21:28:40 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/704] --help and --version
Date: Fri, 22 Feb 2019 21:28:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed|2006-02-02 13:45:08 |2019-2-22
--- Comment #19 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #18)
> Whether this is fixed may be determined by running all of the programs
> installed in $exec_prefix/bin by current mainline with the --help and
> --version options (and confirming the GCC version number is properly shown
> in the --version output).
looks like gcc-nm and gcc-ranlib still fail with --help:
$ /usr/local/bin/gcc-nm --help
error: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/nm: invalid
argument --
Usage: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/nm
[-agnopruUmxjlfAP[s segname sectname] [-] [-t format] [[-arch <arch_flag>] ...]
[file ...]
$ /usr/local/bin/gcc-ranlib --help
error: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/ranlib: unknown
option character `-' in: --help
Usage: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/ranlib [-sactfqLT]
[-] archive [...]
$ /usr/local/bin/x86_64-apple-darwin10.8.0-gcc-nm --help
error: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/nm: invalid
argument --
Usage: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/nm
[-agnopruUmxjlfAP[s segname sectname] [-] [-t format] [[-arch <arch_flag>] ...]
[file ...]
$ /usr/local/bin/x86_64-apple-darwin10.8.0-gcc-ranlib --help
error: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/ranlib: unknown
option character `-' in: --help
Usage: /opt/iains/x86_64-apple-darwin10/darwin-gcc-5-3r0/bin/ranlib [-sactfqLT]
[-] archive [...]
$
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--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #9)
> Why a new warning instead of making -Wterminate handle throw() as well as
> noexcept ?
For consistency with clang? I dunno, I guess putting it under -Wterminate could
work too...
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 21:31:00 -0000
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--- Comment #6 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Jakub Jelinek from comment #4)
> vmovupd (%rsi,%rax), %zmm1{%k1}{z}
> addq %rdx, %rax
> vmovupd (%rax), %zmm2{%k1}{z}
> vfmadd132pd %zmm0, %zmm2, %zmm1
> vmovupd %zmm1, (%rax){%k1}
> isn't optimal btw, it would be nice if we could merge that masking into the
> vfmadd132pd instruction, like:
> vmovupd (%rsi,%rax), %zmm1{%k1}{z}
> addq %rdx, %rax
> vfmadd132pd (%rax), %zmm2, %zmm1%{k1}{z}
> vmovupd %zmm1, (%rax){%k1}
> but not really sure how to achieve that.
It would be nice. It would be even nicer not to have that "addq". That's
actually what ICC generates (click on the godbolt link and change one of the
compilers to ICC 19):
..B1.3: # Preds ..B1.3 ..B1.2
cmpq %rax, %r8 #12.13
cmova %r10d, %r9d #12.13
kmovw %r9d, %k1 #13.20
vmovupd (%r8,%rsi), %zmm1{%k1}{z} #13.20
vfmadd213pd (%r8,%rdx), %zmm0, %zmm1{%k1}{z} #15.20
vmovupd %zmm1, (%r8,%rdx){%k1} #16.9
addq $64, %r8 #10.48
cmpq %rcx, %r8 #10.32
jb ..B1.3 # Prob 82% #10.32
There's one more simplification here: ICC lacks the movzbl instruction which
GCC inserted but is completely superfluous. First, we've already calculated the
proper 32-bit pattern and stored it in %r9d, there was no need to zero extend
it. Second, when operating on 512-bit packed doubles, there are 8 lanes, so
only the low 8 bits of the mask register will be considered in the first place.
(Arguably, the intrinsic should have used __mmask8, but that wasn't added until
AVX512DQ and this is F)
That reduces the number of instructions and will save you a couple of uops per
loop. Depending on how long your loop is, it may help you fit in the DSB and
help the Loop Stream Detector. I'm not at all knowledgeable about those
details, so I'll just link to
https://stackoverflow.com/questions/39311872/is-performance-reduced-when-executing-loops-whose-uop-count-is-not-a-multiple-of#answer-39940932.
For this particular loop, if run long enough, I don't think there's any effect,
but this is an area for improvement for longer loops. The number of
instructions is also significant for short-lived loops, which happens to me
often when using SIMD for strings (tens of bytes of length, so the loop is run
once or twice only).
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Subject: [Bug target/80571] AVX allows multiple vcvtsi2ss/sd (integer -> float/double) to reuse a single dep-breaking vxorps, even hoisting it out of loops
Date: Fri, 22 Feb 2019 21:31:00 -0000
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--- Comment #2 from Peter Cordes <peter at cordes dot ca> ---
I think hjl's patch for PR 89071 / PR 87007 fixes (most of?) this, at least for
AVX.
If register pressure is an issue, using a reg holding a arbitrary constant
(instead of xor-zeroed) is a valid option, as this bug points out. So I'm not
sure we should close this as a duplicate of those fixed bugs.
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From: "andres_takach at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libquadmath/89459] New: Incorrect rounding for fma in some cases
Date: Fri, 22 Feb 2019 21:35:00 -0000
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Bug ID: 89459
Summary: Incorrect rounding for fma in some cases
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Target Milestone: ---
Created attachment 45802
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45802&action=edit
testcase for issue: c++ fma_rnd_bug.cxx -lquadmath
The function fmaq(x,y,z) should be equivalent to x*y+z if x*y returns a finite
exact value.
Test
x = smallest (subnormal)
hex: 00000000000000000000000000000001
y = 2*(2^112 + 1)
hex: 40700000000000000000000000000001
z = x
fma(x,y,z) returns hex (same as x*y):
00020000000000000000000000000001
x*y+z return hex (it is rounded to nearest even):
00020000000000000000000000000002
GCC version info:
Using built-in specs.
COLLECT_GCC=/wv/hlstools/gcc6.2.0-64/pkgs/dcs_gcc/gcc-6.2.0/lib/gcc/../../bin/c++
COLLECT_LTO_WRAPPER=/wv/hlstools/gcc6.2.0-64/pkgs/dcs_gcc/gcc-6.2.0/lib/gcc/../../libexec/gcc/x86_64-linux-gnu/6.2.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with:
/wv/hls01/dcs_gcc/rls_iwa/2016-09-27_163927/aol/build/src/gcc-6.2.0/configure
--prefix=/wv/hls01/dcs_gcc/rls_iwa/2016-09-27_163927/aol/exports/mgc_home/pkgs/dcs_gcc.aol/gcc-6.2.0
-build=x86_64-linux-gnu --enable-languages=c,c++ --enable-threads --with-dwarf2
--with-pkgversion=Calypto
Thread model: posix
gcc version 6.2.0 (Calypto)
>From gcc-bugs-return-634911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 21:38:19 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Fri, 22 Feb 2019 21:38:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #5)
> (In reply to Martin Liška from comment #0)
> > Issues is that:
> >
> > 14746 /* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
> > 14747 if (flag_strict_enums)
> > 14748 set_min_and_max_values_for_integral_type (enumtype,
> > precision, sgn);
> >
> > is called for precision, which sets min = 0 and max = 7.
>
> Because that's how enums work in C++, as required by the standard.
>
> That's not an issue.
>
> > What about doing:
> >
> > diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
> > index 612afbacd27..46302b4a61d 100644
> > --- a/gcc/cp/decl.c
> > +++ b/gcc/cp/decl.c
> > @@ -14745,7 +14745,10 @@ finish_enum_value_list (tree enumtype)
> >
> > /* If -fstrict-enums, still constrain TYPE_MIN/MAX_VALUE. */
> > if (flag_strict_enums)
> > - set_min_and_max_values_for_integral_type (enumtype, precision, sgn);
> > + {
> > + TYPE_MIN_VALUE (enumtype) = minnode;
> > + TYPE_MAX_VALUE (enumtype) = maxnode;
> > + }
> > }
> > else
> > underlying_type = ENUM_UNDERLYING_TYPE (enumtype);
> >
> > I can also imagine another option level when desired.
>
> Please no. -fstrict-enums currently makes the compiler *more* strictly
> conforming, by following the rules of the standard. Your suggestion arguably
> makes it *less* conforming, by deciding that valid values should emit a
> warning.
>
> What you want is not how enums work in C++. Please don't abuse
> -fstrict-enums when what you want is "some other kind of enum, not one that
> strictly follows the C++ standard".
This reminds me, I think there are some other related bug reports out there,
but I can't find them right now...
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From: "peter at cordes dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Fri, 22 Feb 2019 21:39:00 -0000
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--- Comment #22 from Peter Cordes <peter at cordes dot ca> ---
Nice, that's exactly the kind of thing I suggested in bug 80571. If this
covers
* vsqrtss/sd (mem),%merge_into, %xmm
* vpcmpeqd %same,%same, %dest # false dep on KNL / Silvermont
* vcmptrueps %same,%same, %ymm # splat -1 without AVX2. false dep on all
known uarches
as well as int->FP conversions, then we could probably close that as fixed by
this as well.
bug 80571 does suggest that we could look for any cold reg, like a non-zero
constant, instead of requiring an xor-zeroed vector, so it might go slightly
beyond what this patch does.
And looking for known-to-be-ready dead regs from earlier in the same dep chain
could certainly be useful for non-AVX code-gen, allowing us to copy-and-sqrt
without introducing a dependency on anything that's not already ready.
(In reply to hjl@gcc.gnu.org from comment #21)
> Author: hjl
> Date: Fri Feb 22 15:54:08 2019
> New Revision: 269119
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |danglin at gcc dot gnu.org
--- Comment #27 from John David Anglin <danglin at gcc dot gnu.org> ---
Fails with gcc-9 on hppa64-hp-hpux11.11.
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From: "thiago at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 21:59:00 -0000
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--- Comment #7 from Thiago Macieira <thiago at kde dot org> ---
Comment on attachment 45800
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45800
gcc9-pr89445.patch
Tested and works on my machine.
The movzbl that GCC 8 generated is also gone, but it inserted moves *from* the
OpMask register:
.L4:
movq %rcx, %rax
addq $64, %rcx
cmpq %rdi, %rcx
kmovw %k1, %r9d
cmova %r8d, %r9d
kmovw %r9d, %k1
vmovupd (%rsi,%rax), %zmm1{%k1}{z}
addq %rdx, %rax
vmovupd (%rax), %zmm2{%k1}{z}
vfmadd132pd %zmm0, %zmm2, %zmm1
vmovupd %zmm1, (%rax){%k1}
cmpq %rdi, %rcx
jb .L4
Seems like it forgot the GPR that used to contain the mask, so it needed to
reload from %k1. The end detection is also slightly worse.
Yesterday, when I benchmarked with GCC 8, it ran 1000 iterations over 10
million doubles in roughly 11.9 ms, with 10 million instructions. Today, I am
getting 11.8 ms at 16 million instructions (the increase of instructions/cycle
is roughly equal to the decrease in instructions per iteration, proving that
memory bandwidth is the bottleneck)
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Subject: [Bug libstdc++/89460] New: FAIL: experimental/net/headers.cc (test for excess errors)
Date: Fri, 22 Feb 2019 22:00:00 -0000
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Bug ID: 89460
Summary: FAIL: experimental/net/headers.cc (test for excess
errors)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
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Host: hppa*-*-hpux*
Target: hppa*-*-hpux*
Build: hppa*-*-hpux*
spawn /test/gnu/gcc/objdir/./gcc/xg++ -shared-libgcc
-B/test/gnu/gcc/objdir/./gc
c -nostdinc++ -L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src
-L/tes
t/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu64/gcc/gcc-9/hppa6
4-hp-hpux11.11/bin/ -B/opt/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/lib/ -isystem
/op
t/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/include -isystem
/opt/gnu64/gcc/gcc-9/hppa
64-hp-hpux11.11/sys-include -fchecking=1
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11
.11/./libstdc++-v3/src/.libs -fmessage-length=0 -fno-show-column
-ffunction-sect
ions -fdata-sections -g -O2 -DLOCALEDIR="." -nostdinc++
-I/test/gnu/gcc/objdir/h
ppa64-hp-hpux11.11/libstdc++-v3/include/hppa64-hp-hpux11.11
-I/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/lib
supc++ -I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/lib
stdc++-v3/testsuite/util
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/experimental/n
et/headers.cc -include bits/stdc++.h -fno-diagnostics-show-caret
-fdiagnostics-c
olor=never -S -o headers.s
In file included from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/incl
ude/experimental/net:40,
from
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/experimental/net/
headers.cc:20:
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/experimental/socke
t: In member function 'bool
std::experimental::net::v1::basic_socket<_Protocol>:
:at_mark(std::error_code&) const':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/experimental/socke
t:798: error: '::sockatmark' has not been declared
compiler exited with status 1
output is:
In file included from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/incl
ude/experimental/net:40,
from
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/experimental/net/
headers.cc:20:
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/experimental/socke
t: In member function 'bool
std::experimental::net::v1::basic_socket<_Protocol>:
:at_mark(std::error_code&) const':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/experimental/socke
t:798: error: '::sockatmark' has not been declared
FAIL: experimental/net/headers.cc (test for excess errors)
Excess errors:
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/experimental/socket:798:
error: '::sockatmark' has not been declared
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
Date: Fri, 22 Feb 2019 22:01:00 -0000
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--- Comment #8 from Thiago Macieira <thiago at kde dot org> ---
Sorry, in editing I ended up removing an important point: GCC 8 also generates
the move *from* OpMask when I put it in the benchmark loop. So that's not a
regression, per se.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/52879] Pathological reseeding of PRNG generator genernates poor sequence
Date: Fri, 22 Feb 2019 22:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52879
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I think the current implementation has a decent protection against bad seeds,
> so lets close this as fixed.
The least I can say is that I am not convinced about the "decent protection".
>From gcc-bugs-return-634918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 22:06:31 2019
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89461] New: FAIL: experimental/net/timer/waitable/cons.cc
Date: Fri, 22 Feb 2019 22:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89461
Bug ID: 89461
Summary: FAIL: experimental/net/timer/waitable/cons.cc
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa*-*-hpux*
Target: hppa*-*-hpux*
Build: hppa*-*-hpux*
spawn /test/gnu/gcc/objdir/./gcc/xg++ -shared-libgcc
-B/test/gnu/gcc/objdir/./gc
c -nostdinc++ -L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src
-L/tes
t/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu64/gcc/gcc-9/hppa6
4-hp-hpux11.11/bin/ -B/opt/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/lib/ -isystem
/op
t/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/include -isystem
/opt/gnu64/gcc/gcc-9/hppa
64-hp-hpux11.11/sys-include -fchecking=1
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11
.11/./libstdc++-v3/src/.libs -fmessage-length=0 -fno-show-column
-ffunction-sect
ions -fdata-sections -g -O2 -DLOCALEDIR="." -nostdinc++
-I/test/gnu/gcc/objdir/h
ppa64-hp-hpux11.11/libstdc++-v3/include/hppa64-hp-hpux11.11
-I/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/lib
supc++ -I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/lib
stdc++-v3/testsuite/util
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/experimental/n
et/timer/waitable/cons.cc -include bits/stdc++.h -fno-diagnostics-show-caret
-fd
iagnostics-color=never ./libtestc++.a /opt/gnu64/lib/libiconv.sl -Wl,+b
-Wl,/opt
/gnu64/lib
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src/filesyste
m/.libs -lm -o ./cons.exe
ld: Unsatisfied symbol "__atomic_fetch_sub_8" in file /var/tmp//ccK5pq8s.o
1 errors.
collect2: error: ld returned 1 exit status
compiler exited with status 1
output is:
ld: Unsatisfied symbol "__atomic_fetch_sub_8" in file /var/tmp//ccK5pq8s.o
1 errors.
collect2: error: ld returned 1 exit status
FAIL: experimental/net/timer/waitable/cons.cc (test for excess errors)
Excess errors:
ld: Unsatisfied symbol "__atomic_fetch_sub_8" in file /var/tmp//ccK5pq8s.o
1 errors.
collect2: error: ld returned 1 exit status
Setting LD_LIBRARY_PATH to
:/test/gnu/gcc/objdir/gcc:/test/gnu/gcc/objdir/hppa64
-hp-hpux11.11/./libstdc++-v3/../libatomic/.libs:/test/gnu/gcc/objdir/hppa64-hp-h
pux11.11/./libstdc++-v3/../libgomp/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.1
1/./libstdc++-v3/src/.libs::/test/gnu/gcc/objdir/gcc:/test/gnu/gcc/objdir/hppa64
-hp-hpux11.11/./libstdc++-v3/../libatomic/.libs:/test/gnu/gcc/objdir/hppa64-hp-h
pux11.11/./libstdc++-v3/../libgomp/.libs:/test/gnu/gcc/objdir/hppa64-hp-hpux11.1
1/./libstdc++-v3/src/.libs
FAIL: experimental/net/timer/waitable/cons.cc execution test
Similar fails:
FAIL: experimental/net/timer/waitable/dest.cc (test for excess errors)
FAIL: experimental/net/timer/waitable/dest.cc execution test
FAIL: experimental/net/timer/waitable/ops.cc (test for excess errors)
FAIL: experimental/net/timer/waitable/ops.cc execution test
>From gcc-bugs-return-634919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 22:35:10 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89456] target attribute doesn't work well with -mXXX
Date: Fri, 22 Feb 2019 22:35:00 -0000
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
On AVX2 machine:
[hjl@gnu-skx-1 tmp]$ gcc
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/g++.target/i386/mv17.C
[hjl@gnu-skx-1 tmp]$ ./a.out
[hjl@gnu-skx-1 tmp]$ gcc
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/g++.target/i386/mv17.C
-march=haswell
[hjl@gnu-skx-1 tmp]$ ./a.out
a.out:
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/g++.target/i386/mv17.C:39:
int main(): Assertion `val == 2' failed.
Aborted
[hjl@gnu-skx-1 tmp]$
>From gcc-bugs-return-634920-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 22:48:07 2019
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Subject: [Bug target/89411] RISC-V backend will generate wrong instruction for longlong type like lw a3,-2048(a5)
Date: Fri, 22 Feb 2019 22:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89411
Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wilson at gcc dot gnu.org
--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
I think the problem is in riscv_valid_lo_sum_p where we do
/* We may need to split multiword moves, so make sure that each word
can be accessed without inducing a carry. */
if (GET_MODE_SIZE (mode) > UNITS_PER_WORD
&& (!TARGET_STRICT_ALIGN
|| GET_MODE_BITSIZE (mode) > GET_MODE_ALIGNMENT (mode)))
return false;
The problem is that this doesn't work for BLKmode, as GET_MODE_SIZE,
GET_MODE_BITSIZE, and GET_MODE_ALIGNMENT don't return usable values for
BLKmode. We could perhaps just return false for mode == BLKmode here, but that
requires some testing to see what conditions BLKmode might appear here. We
don't want to accidentally disable this optimization when it is useful and
safe.
Best case solution is probably to pass down a decl or a MEM, so we can get the
actual size and alignment from there. That is a little bit more work, so I
only want to do that if necessary.
>From gcc-bugs-return-634922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 22:58:02 2019
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Subject: [Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
Date: Fri, 22 Feb 2019 22:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
Bug 26163 depends on bug 86448, which changed state.
Bug 86448 Summary: GCC 9 compiler generates slower code for spec 2006 milc on a power9 using -mcpu=power9 than using -mcpu=power8
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86448
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----------------------------------------------------------------------------
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>From gcc-bugs-return-634921-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 22:58:01 2019
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Subject: [Bug target/86448] GCC 9 compiler generates slower code for spec 2006 milc on a power9 using -mcpu=power9 than using -mcpu=power8
Date: Fri, 22 Feb 2019 22:58:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Not confirmed at this time. Let's close it until we have something more
definitive to look at.
>From gcc-bugs-return-634923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 23:16:57 2019
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Subject: [Bug c++/84676] [7/8/9 Regression] internal compiler error: Segmentation fault (build_new_op_1)
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--- Comment #5 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Feb 22 23:16:14 2019
New Revision: 269138
URL: https://gcc.gnu.org/viewcvs?rev=269138&root=gcc&view=rev
Log:
2019-02-22 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84676
* g++.dg/cpp0x/pr84676.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr84676.C
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 22 23:17:37 2019
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Subject: [Bug c++/84676] [7 Regression] internal compiler error: Segmentation fault (build_new_op_1)
Date: Fri, 22 Feb 2019 23:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84676
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] internal |[7 Regression] internal
|compiler error: |compiler error:
|Segmentation fault |Segmentation fault
|(build_new_op_1) |(build_new_op_1)
--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in trunk and 8.1.0.
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
Date: Sat, 23 Feb 2019 00:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89459
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Please see whether this still applies with GCC mainline (postdating my
2018-11-07 merge of fmaq changes from glibc which brought in at least one
bug fix).
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Subject: [Bug tree-optimization/88074] [7/8 Regression] g++ hangs on math expression
Date: Sat, 23 Feb 2019 00:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88074
--- Comment #33 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 23 00:14:52 2019
New Revision: 269139
URL: https://gcc.gnu.org/viewcvs?rev=269139&root=gcc&view=rev
Log:
PR middle-end/88074
* simplify.c (norm2_do_sqrt, gfc_simplify_norm2): Use
mpfr_number_p && !mpfr_zero_p instead of mpfr_regular_p.
(norm2_add_squared): Likewise. Use mp_exp_t rather than mpfr_exp_t.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/simplify.c
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Subject: [Bug libstdc++/89460] FAIL: experimental/net/headers.cc (test for excess errors)
Date: Sat, 23 Feb 2019 00:20:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-23
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Ever confirmed|0 |1
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Sat, 23 Feb 2019 01:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89446
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 23 01:02:05 2019
New Revision: 269144
URL: https://gcc.gnu.org/viewcvs?rev=269144&root=gcc&view=rev
Log:
PR libstdc++/89446 fix null pointer dereference in char_traits
PR libstdc++/89446
* include/bits/char_traits.h (__constant_char_array): Check index is
in range before dereferencing.
* testsuite/21_strings/basic_string_view/operators/char/89446.cc:
New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/char/89446.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/char_traits.h
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Sat, 23 Feb 2019 01:02:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 23 01:01:56 2019
New Revision: 269143
URL: https://gcc.gnu.org/viewcvs?rev=269143&root=gcc&view=rev
Log:
PR libstdc++/89446 fix null pointer dereference in char_traits
PR libstdc++/89446
* include/bits/char_traits.h (__constant_char_array): Check index is
in range before dereferencing.
* testsuite/21_strings/basic_string_view/operators/char/89446.cc:
New test.
Added:
branches/gcc-7-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/char/89446.cc
Modified:
branches/gcc-7-branch/libstdc++-v3/ChangeLog
branches/gcc-7-branch/libstdc++-v3/include/bits/char_traits.h
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84939] [7/8/9 Regression] internal compiler error: in gimplify_expr, at gimplify.c:12382
Date: Sat, 23 Feb 2019 01:03:00 -0000
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--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This also crashes the compiler, in a different way:
void b() {
struct c {
int d struct d e;
};
}
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Subject: [Bug fortran/89462] New: gfortran loops in code generation
Date: Sat, 23 Feb 2019 01:08:00 -0000
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Bug ID: 89462
Summary: gfortran loops in code generation
Product: gcc
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Forwarding bug reported by gvozdila at
https://www.linux.org.ru/forum/development/14824493 :
$ cat a.f95
CHARACTER*1 FUNCTION test(H)
CHARACTER*1 test2,TR,aTP
ENTRY test2(L)
CALL ttest3(aTP)
test = TR
RETURN
END
$ gfortran -c a.f95
<hung>
Seems to be an old regression:
$ for gf in /usr/bin/gfortran*; do echo -n "$gf: "; ( ulimit -t 5; $gf -c
a.f95 >/dev/null 2>&1 && echo "OK" || echo "BAD" ; ); done
/usr/bin/gfortran: BAD
/usr/bin/gfortran-4.0.4: OK
/usr/bin/gfortran-4.1.2: OK
/usr/bin/gfortran-4.2.4: BAD
/usr/bin/gfortran-4.3.6: BAD
/usr/bin/gfortran-4.4.7: BAD
/usr/bin/gfortran-4.5.4: BAD
/usr/bin/gfortran-4.6.4: BAD
/usr/bin/gfortran-4.7.4: BAD
/usr/bin/gfortran-4.8.5: BAD
/usr/bin/gfortran-4.9.4: BAD
/usr/bin/gfortran-5.4.0: BAD
/usr/bin/gfortran-5.5.0: BAD
/usr/bin/gfortran-6.4.0: BAD
/usr/bin/gfortran-6.5.0: BAD
/usr/bin/gfortran-7.3.0: BAD
/usr/bin/gfortran-7.4.0: BAD
/usr/bin/gfortran-8.2.0: BAD
$ gdb --quiet -p 13184
Attaching to process 13184
...
(gdb) bt
#0 poplevel (keep=keep@entry=1, functionbody=functionbody@entry=1) at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/fortran/f95-lang.c:386
#1 0x00000000006ce95a in gfc_generate_function_code (ns=<optimized out>) at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/fortran/trans-decl.c:6633
#2 0x000000000065c960 in translate_all_program_units
(gfc_global_ns_list=<optimized out>) at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/fortran/parse.c:6125
#3 gfc_parse_file () at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/fortran/parse.c:6328
#4 0x00000000006a45d0 in gfc_be_parse_file () at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/fortran/f95-lang.c:204
#5 0x0000000000b0584e in compile_file () at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/toplev.c:455
#6 0x00000000005c8fff in do_compile () at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/toplev.c:2136
#7 toplev::main (this=this@entry=0x7fffef35aea6, argc=<optimized out>,
argc@entry=13, argv=<optimized out>, argv@entry=0x7fffef35afa8)
at /usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/toplev.c:2271
#8 0x00000000005cb2cb in main (argc=13, argv=0x7fffef35afa8) at
/usr/src/debug/sys-devel/gcc-8.2.0-r6/gcc-8.2.0/gcc/main.c:39
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89390] [9 Regression] ICE in get_string, at spellcheck-tree.h:46
Date: Sat, 23 Feb 2019 01:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89390
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Sat Feb 23 01:19:38 2019
New Revision: 269145
URL: https://gcc.gnu.org/viewcvs?rev=269145&root=gcc&view=rev
Log:
Capture source location of dtors (PR c++/89390)
gcc/cp/ChangeLog:
PR c++/89390
* parser.c (cp_parser_unqualified_id): Capture and use locations
for destructors.
gcc/testsuite/ChangeLog:
PR c++/89390
* g++.dg/diagnostic/pr89390.C: Update expected location of error,
renaming to a multicharacter name, so that start != finish. Add
tests for dtor locations.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/diagnostic/pr89390.C
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/89463] New: gcc generates wrong debug information at -O3
Date: Sat, 23 Feb 2019 01:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89463
Bug ID: 89463
Summary: gcc generates wrong debug information at -O3
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
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It bug affects the latest trunk.
It also affects gcc-8 and gcc-7.
gcc-6 works fine.
With "-O3", it incorrectly prints "i=0".
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 9.0.1 20190222 (experimental) [trunk revision 269113] (GCC)
$ cat abc.c
int a;
int main() {
int i;
for (; a < 10; a++)
i = 0;
for (; i < 6; i++)
;
optimize_me_not();
}
$ cat outer.c
optimize_me_not() {}
$ cat cmds
b 8
r
p i
kill
q
$ gcc-trunk -g abc.c outer.c
$ gdb-trunk -x cmds -batch a.out
Breakpoint 1 at 0x4004b9: file abc.c, line 8.
Breakpoint 1, main () at abc.c:8
8 optimize_me_not();
$1 = 6
Kill the program being debugged? (y or n) [answered Y; input not from terminal]
[Inferior 1 (process 29883) killed]
$ gcc-trunk -g abc.c outer.c -O3
$ gdb-trunk -x cmds -batch a.out
Breakpoint 1 at 0x4003b7: file abc.c, line 8.
Breakpoint 1, main () at abc.c:8
8 optimize_me_not();
$1 = 0
Kill the program being debugged? (y or n) [answered Y; input not from terminal]
[Inferior 1 (process 31868) killed]
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Sat, 23 Feb 2019 01:33:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|gcc generates wrong debug |debug information for
|information at -O3 |iteractor of an empty loop
| |is gone (at -O3)
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What is happening is the empty loop is being removed and not replaced with a
debug statement say i is 6 afterwards. I don't know if this is a good idea to
put a debug statement here or not.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Sat, 23 Feb 2019 01:43:00 -0000
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--- Comment #2 from Qirun Zhang <qrzhang at gatech dot edu> ---
(In reply to Andrew Pinski from comment #1)
> What is happening is the empty loop is being removed and not replaced with a
> debug statement say i is 6 afterwards. I don't know if this is a good idea
> to put a debug statement here or not.
Agreed.
Nevertheless, it should not print a wrong value.
The expected behavior is "<optimized out>" like what gcc-6.5.0 does as
follows:
$ gcc-6 -O3 out.c abc.c -g
$ gdb-trunk -x cmds -batch a.out
Breakpoint 1 at 0x547: file abc.c, line 8.
Breakpoint 1, main () at abc.c:8
8 optimize_me_not();
$1 = <optimized out>
Kill the program being debugged? (y or n) [answered Y; input not from terminal]
[Inferior 1 (process 17644) killed]
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Subject: [Bug c/77970] inconsistent and unhelpful -Wformat warning for %lc
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-23
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01862.html for some of
the headaches this causes. Confirmed on that basis.
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Subject: [Bug target/89355] Unnecessary ENDBR
Date: Sat, 23 Feb 2019 02:42:00 -0000
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 89353 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/89353] Unnecessary ENDBR with -mmanual-endbr
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Unnecessary ENDBR should be fixed by PR 89355.
*** This bug has been marked as a duplicate of bug 89355 ***
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Subject: [Bug target/81652] [meta-bug] -fcf-protection=full bugs
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Bug 81652 depends on bug 89353, which changed state.
Bug 89353 Summary: Unnecessary ENDBR with -mmanual-endbr
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89353
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
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Subject: [Bug c++/67026] GCC incorrectly rejects well-formed constexpr function definition
Date: Sat, 23 Feb 2019 03:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67026
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 23 03:01:59 2019
New Revision: 269148
URL: https://gcc.gnu.org/viewcvs?rev=269148&root=gcc&view=rev
Log:
PR libstdc++/89446 fix null pointer dereference in char_traits
PR libstdc++/89446
* include/bits/char_traits.h (__constant_char_array): Check index is
in range before dereferencing.
(char_traits<char>::compare, char_traits<char>::find)
(char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
immediately if n is zero.
(char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
Remove workarounds for PR 67026.
* testsuite/21_strings/basic_string_view/operators/char/89446.cc:
New test.
* testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
New test.
Added:
trunk/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/char/89446.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/char_traits.h
>From gcc-bugs-return-634940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 03:02:51 2019
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
Date: Sat, 23 Feb 2019 03:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89446
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 23 03:01:59 2019
New Revision: 269148
URL: https://gcc.gnu.org/viewcvs?rev=269148&root=gcc&view=rev
Log:
PR libstdc++/89446 fix null pointer dereference in char_traits
PR libstdc++/89446
* include/bits/char_traits.h (__constant_char_array): Check index is
in range before dereferencing.
(char_traits<char>::compare, char_traits<char>::find)
(char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
immediately if n is zero.
(char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
Remove workarounds for PR 67026.
* testsuite/21_strings/basic_string_view/operators/char/89446.cc:
New test.
* testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
New test.
Added:
trunk/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/char/89446.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/char_traits.h
>From gcc-bugs-return-634942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 05:16:37 2019
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Subject: [Bug fortran/89462] gfortran loops in code generation
Date: Sat, 23 Feb 2019 05:16:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-23
CC| |jvdelisle at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Confirmed on trunk.
>From gcc-bugs-return-634943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 06:19:40 2019
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From: "gcc at nmacleod dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89464] New: shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 06:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89464
Bug ID: 89464
Summary: shared_ptr_base.h: error: '__tag' was not declared in
this scope (gcc-8.3.0 regression?)
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
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Target Milestone: ---
I've just tried building the LibreELEC operating system with gcc-8.3.0 (glibc
2.29) and it has failed when compiling the Kodi addon "PVR HDHomeRun"[1].
The compile error is:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/bin/x86_64-libreelec-linux-gnu-g++
-DADDON_GLOBAL_VERSION_MAIN_USED -DADDON_INSTANCE_VERSION_PVR_USED
-DBUILD_KODI_ADDON -Dpvr_hdhomerun_EXPORTS
-I/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include
-I/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/kodi
-I/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/p8-platform
-I/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/hdhomerun
-march=x86-64 -m64 -mmmx -msse -msse2 -mfpmath=sse -fomit-frame-pointer -Wall
-pipe -Os -std=c++11 -Os -DNDEBUG -fPIC -D_LINUX -DTARGET_POSIX
-DTARGET_LINUX -D_GNU_SOURCE -DHAVE_LINUX_MEMFD=1 -DHAVE_MKOSTEMP=1
-DHAVE_SSE=1 -DHAVE_SSE2=1 -DHAVE_SSE3=1 -DHAVE_SSSE3=1 -DHAVE_SSE4_1=1 -MD -MT
CMakeFiles/pvr.hdhomerun.dir/src/HDHomeRunTuners.cpp.o -MF
CMakeFiles/pvr.hdhomerun.dir/src/HDHomeRunTuners.cpp.o.d -o
CMakeFiles/pvr.hdhomerun.dir/src/HDHomeRunTuners.cpp.o -c
../src/HDHomeRunTuners.cpp
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/include/c++/8.3.0/bits/shared_ptr.h:52,
from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/include/c++/8.3.0/memory:81,
from ../src/HDHomeRunTuners.cpp:30:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/include/c++/8.3.0/bits/shared_ptr_base.h:
In static member function 'static const std::type_info&
std::_Sp_make_shared_tag::_S_ti()':
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.1-devel-gcc/toolchain/x86_64-libreelec-linux-gnu/include/c++/8.3.0/bits/shared_ptr_base.h:511:49:
error: '__tag' was not declared in this scope
return reinterpret_cast<const type_info&>(__tag);
^~~~~
The build log for this addon is here: http://ix.io/1BOs
The PVR HDHomeRun code compiles without issue when using gcc-8.2.0 instead of
gcc-8.3.0, so maybe this is a gcc-8.3.0 regression?
gcc-8.3.0 has been built from source along with the rest of the LibreELEC
toolchain. The build host is Ubuntu 17.10.
1.
https://github.com/kodi-pvr/pvr.hdhomerun/blob/master/src/HDHomeRunTuners.cpp#L30
>From gcc-bugs-return-634944-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 06:32:11 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 06:32:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-23
Component|c++ |libstdc++
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
17b46dadecbf (redi 2018-11-22 15:02:46 +0000 510) alignas(type_info)
static constexpr char __tag[sizeof(type_info)] = { };
0d9884f7ccc3 (redi 2017-05-11 13:21:07 +0000 511) return
reinterpret_cast<const type_info&>(__tag);
Hmm, it is there for me.
Can you add -save-temps and provide the preprocessed source?
>From gcc-bugs-return-634945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 06:50:27 2019
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/704] --help and --version
Date: Sat, 23 Feb 2019 06:50:00 -0000
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--- Comment #20 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #19)
> (In reply to joseph@codesourcery.com from comment #18)
> > Whether this is fixed may be determined by running all of the programs
> > installed in $exec_prefix/bin by current mainline with the --help and
> > --version options (and confirming the GCC version number is properly shown
> > in the --version output).
>
> looks like gcc-nm and gcc-ranlib still fail with --help:
That's not a fault with the GCC wrappers, it's because the "upstream" cctools
nm and ranlib don't respond to "--help" (or --version). I have amended
versions of them that handle --help and --version (available on github***) that
work:
$ ./gcc/gcc-ar --help
usage: ar -d [-TLsv] archive file ...
ar -m [-TLsv] archive file ...
<snip>
$ ./gcc/gcc-ar --version
xtools-1.1.0 ar
- the point is that this is not a problem with the GCC wrappers, the intention
of them is to pass the --help and --version onto the underlying commands.
>From the point of view of Darwin, I'd say this could be closed, of course it
might not be completely clean for other platforms.
*** Note: the versions published on github are quite old - on the TODO to
provide some updates.
>From gcc-bugs-return-634946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 06:51:41 2019
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 06:51:00 -0000
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--- Comment #2 from Milhouse <gcc at nmacleod dot com> ---
This is a new build log, with -save-temps added: http://ix.io/1BOD
I've uploaded the PVR HDHomeRun build directory as a tar.gz:
http://milhouse.libreelec.tv/other/pvrhdhomerun.tar.gz
This directory includes .s, .i, .ii etc. files - hopefully this is what you are
looking for.
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 07:52:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Someone is doing:
#define alignas(x) __attribute__((aligned(x)))
Which is not valid as alignas does take a type name also.
You can figure out who by adding -g3 (with -save-temps still) and looking at
the .ii file to see who defines it.
Easies way to fix this is to reorder the header files:
#include "HDHomeRunTuners.h"
#include <cstring>
#include <ctime>
#include <functional>
#include <memory>
#include <set>
#include <string>
#include <vector>
So the system ones are included first.
But this is not a GCC issue.
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 08:12:00 -0000
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is in https://github.com/Silicondust/libhdhomerun:
hdhomerun_os_posix.h
Which does:
#if !defined(alignas)
#define alignas(n) __attribute__((aligned(n)))
#endif
That is wrong.
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
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--- Comment #5 from Milhouse <gcc at nmacleod dot com> ---
Thanks very much for digging into this so quickly and identifying the cause,
I'll feed it back to the add-on author.
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Subject: [Bug c/89448] Failure to generate diagnostic for "complex int" (OK for "_Complex int")
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--- Comment #2 from Mark RISON <mrison at hotmail dot com> ---
(In reply to Richard Biener from comment #1)
> Because 'complex' is from a system header probably ...
It still ought to give a diagnostic, no?
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Subject: [Bug ada/89349] segfault when building GCC 8 branch with GCC master
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--- Comment #15 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Sat Feb 23 10:04:41 2019
New Revision: 269154
URL: https://gcc.gnu.org/viewcvs?rev=269154&root=gcc&view=rev
Log:
PR ada/89349
Backport from mainline
2018-05-25 Arnaud Charlet <charlet@adacore.com>
* osint.ads (Unknown_Attributes): No longer pretend this is a constant.
(No_File_Info_Cache): Initialize separately.
* osint.adb (No_File_Info_Cache): Update initializer.
Modified:
branches/gcc-7-branch/gcc/ada/ChangeLog
branches/gcc-7-branch/gcc/ada/osint.adb
branches/gcc-7-branch/gcc/ada/osint.ads
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Subject: [Bug ada/89349] segfault when building GCC 8 branch with GCC master
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--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Sat Feb 23 10:04:23 2019
New Revision: 269153
URL: https://gcc.gnu.org/viewcvs?rev=269153&root=gcc&view=rev
Log:
PR ada/89349
Backport from mainline
2018-05-25 Arnaud Charlet <charlet@adacore.com>
* osint.ads (Unknown_Attributes): No longer pretend this is a constant.
(No_File_Info_Cache): Initialize separately.
* osint.adb (No_File_Info_Cache): Update initializer.
Modified:
branches/gcc-8-branch/gcc/ada/ChangeLog
branches/gcc-8-branch/gcc/ada/osint.adb
branches/gcc-8-branch/gcc/ada/osint.ads
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Subject: [Bug ada/89349] segfault when building GCC 7 & 8 branch with GCC master
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Version|9.0 |7.4.1
Resolution|--- |FIXED
Target Milestone|--- |7.5
Summary|segfault when building GCC |segfault when building GCC
|8 branch with GCC master |7 & 8 branch with GCC
| |master
--- Comment #16 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
.
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Subject: [Bug fortran/71066] [7 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
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--- Comment #17 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 23 11:49:47 2019
New Revision: 269155
URL: https://gcc.gnu.org/viewcvs?rev=269155&root=gcc&view=rev
Log:
2019-02-23 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
Backport from trunk
* trans-decl.c (generate_coarray_sym_init): For an array
constructor in a DATA statement of a coarray variable, set the
rank to 1 to avoid confusion later on. If the constructor
contains only one value, use that for initiailizig.
2019-02-23 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71066
Backport from trunk
* gfortran.dg/coarray_data_1.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/coarray_data_1.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/trans-decl.c
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Subject: [Bug fortran/71066] [7 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Sat, 23 Feb 2019 11:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #18 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
>From gcc-bugs-return-634956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 12:19:23 2019
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
Date: Sat, 23 Feb 2019 12:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89366
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 23 12:18:44 2019
New Revision: 269156
URL: https://gcc.gnu.org/viewcvs?rev=269156&root=gcc&view=rev
Log:
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
PR fortran/89366
* decl.c (gfc_verify_c_interop_param): Restriction on string
length being one is lifted for F2018.
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): For scalar
characters with intent in, make a temporary and copy the result
of the expression evaluation into it.
(gfc_conv_procedure_call): Set a flag for character formal args
having a character length that is not unity. If the procedure
is bind C, call gfc_conv_gfc_desc_to_cfi_desc in this case.
Also, extend bind C calls to unconditionally convert both
pointers and allocatable expressions.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
* gfortran.dg/ISO_Fortran_binding_1.f90 : Correct test for
previously incorrect lbound for allocatable expressions. Also
correct stop values to avoid repetition.
* gfortran.dg/ISO_Fortran_binding_5.f90 : New test
* gfortran.dg/ISO_Fortran_binding_5.c : Support previous test.
PR fortran/89366
* gfortran.dg/ISO_Fortran_binding_6.f90 : New test
* gfortran.dg/ISO_Fortran_binding_6.c : Support previous test.
* gfortran.dg/pr32599.f03 : Set standard to F2008.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
PR fortran/89366
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc) : In the
interchange between character and derived, the character type
was being set incorrectly.
(gfc_desc_to_cfi_desc) : Eliminate the interchange of types in
this function. Do not add the kind and length information to
the type field of structures. Lbounds were incorrectly being
set to zero for allocatable and pointer descriptors. Should
have been non-pointer, non-allocatables that received this
treatment.
Added:
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.f90
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.f90
trunk/gcc/testsuite/gfortran.dg/pr32599.f03
trunk/libgfortran/ChangeLog
trunk/libgfortran/runtime/ISO_Fortran_binding.c
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Subject: [Bug fortran/89385] Incorrect members of C descriptor for an allocatable object
Date: Sat, 23 Feb 2019 12:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89385
--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 23 12:18:44 2019
New Revision: 269156
URL: https://gcc.gnu.org/viewcvs?rev=269156&root=gcc&view=rev
Log:
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
PR fortran/89366
* decl.c (gfc_verify_c_interop_param): Restriction on string
length being one is lifted for F2018.
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): For scalar
characters with intent in, make a temporary and copy the result
of the expression evaluation into it.
(gfc_conv_procedure_call): Set a flag for character formal args
having a character length that is not unity. If the procedure
is bind C, call gfc_conv_gfc_desc_to_cfi_desc in this case.
Also, extend bind C calls to unconditionally convert both
pointers and allocatable expressions.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
* gfortran.dg/ISO_Fortran_binding_1.f90 : Correct test for
previously incorrect lbound for allocatable expressions. Also
correct stop values to avoid repetition.
* gfortran.dg/ISO_Fortran_binding_5.f90 : New test
* gfortran.dg/ISO_Fortran_binding_5.c : Support previous test.
PR fortran/89366
* gfortran.dg/ISO_Fortran_binding_6.f90 : New test
* gfortran.dg/ISO_Fortran_binding_6.c : Support previous test.
* gfortran.dg/pr32599.f03 : Set standard to F2008.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/89385
PR fortran/89366
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc) : In the
interchange between character and derived, the character type
was being set incorrectly.
(gfc_desc_to_cfi_desc) : Eliminate the interchange of types in
this function. Do not add the kind and length information to
the type field of structures. Lbounds were incorrectly being
set to zero for allocatable and pointer descriptors. Should
have been non-pointer, non-allocatables that received this
treatment.
Added:
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.f90
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.f90
trunk/gcc/testsuite/gfortran.dg/pr32599.f03
trunk/libgfortran/ChangeLog
trunk/libgfortran/runtime/ISO_Fortran_binding.c
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Subject: [Bug fortran/89366] Fails to compile BIND(C) interface with assumed-length character argument
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
CC| |pault at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Many thanks for the report.
Paul
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Subject: [Bug fortran/89385] Incorrect members of C descriptor for an allocatable object
Date: Sat, 23 Feb 2019 12:29:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Many thanks for the report.
Paul
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/89465] New: [GCOV] Wrong coverage with setjmp and longjmp function
Date: Sat, 23 Feb 2019 12:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89465
Bug ID: 89465
Summary: [GCOV] Wrong coverage with setjmp and longjmp function
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: yangyibiao at nju dot edu.cn
CC: marxin at gcc dot gnu.org
Target Milestone: ---
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
$ cat small.c
long jmp_buf[5];
void baz(void) { __builtin_longjmp(&jmp_buf, 1); }
int main()
{
int a = 0;
if (__builtin_setjmp(&jmp_buf) == 0) {
while (1) {
a = 1;
baz();
}
}
return a;
}
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:85.71% of 7
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
-: 1:long jmp_buf[5];
-: 2:
1: 3:void baz(void) { __builtin_longjmp(&jmp_buf, 1); }
-: 4:
1: 5:int main()
-: 6:{
1: 7: int a = 0;
2: 8: if (__builtin_setjmp(&jmp_buf) == 0) {
-: 9: while (1) {
#####: 10: a = 1;
1: 11: baz();
-: 12: }
-: 13: }
1: 14: return a;
-: 15:}
Line #10 is wrongly marked as not executed. I am not sure whether this bug has
been fixed in the gcc 8.3.X or gcc 9.0 versions.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
Bug ID: 89466
Summary: Accessing the Internet while boostrapping
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: tkoenig at gcc dot gnu.org
Target Milestone: ---
I finally got around to checking what was holding up the bootstrap
process for so long while the message
"checking for docbook stylesheets for documentation creation"
was displayed. Apparently, the configure script downloads something
from the Internet using
xsltproc --noout --nonet --xinclude
http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl
Now, this has several problems.
First, connecting to somehwere external should be under the user's control, no
software package should be doing so during compilation by default. There is
such a thing as data privacy.
If a source file is needed during compilation, include it in the first place.
Second, this takes far too much time.
Third, this is run repeatedly in several states during bootstrapping.
As to why I mark this a "blocker": This is a serious obstacle to my further
contribution to gcc.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 12:52:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bkoz at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|Accessing the Internet |[7/8/9 Regression]
|while boostrapping |Accessing the Internet
| |while boostrapping
--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This appears to have been introduced in r170763.
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Sat, 23 Feb 2019 13:06:00 -0000
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--- Comment #17 from Mark Wielaard <mark at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #16)
> The warning has been relaxed for GCC 9 in r269125.
Thanks, I can confirm elfutils builds fine without warnings with GCC 9 now.
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From: "yangyibiao at nju dot edu.cn" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug gcov-profile/89467] New: [GCOV] wrong freqencies when there is comparison operator in the right side of the assignment statement
Date: Sat, 23 Feb 2019 13:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89467
Bug ID: 89467
Summary: [GCOV] wrong freqencies when there is comparison
operator in the right side of the assignment statement
Product: gcc
Version: 8.2.0
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$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
$ cat small.c
void foo(int p)
{
int e;
int b = 0, f = 0, d = 0;
if ((p < f) && p) {
L:
for (e = 0; 0;) ;
} else if (d) {
b = (0 >= b);
}
for (; e <= 3; e++) {
if (b) { continue; }
b = 3;
goto L;
}
}
void main()
{
int a = -1;
foo(a);
}
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:87.50% of 16
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:void foo(int p)
-: 2:{
-: 3: int e;
1: 4: int b = 0, f = 0, d = 0;
3: 5: if ((p < f) && p) {
1: 6:L:
2: 7: for (e = 0; 0;) ;
#####: 8: } else if (d) {
#####: 9: b = (0 >= b);
-: 10: }
-: 11:
6: 12: for (; e <= 3; e++) {
5: 13: if (b) { continue; }
1: 14: b = 3;
1: 15: goto L;
-: 16: }
1: 17:}
-: 18:
1: 19:void main()
-: 20:{
1: 21: int a = -1;
1: 22: foo(a);
1: 23:}
Line #5 is wrongly marked as executed 3 times which should be only executed
once.
When Line #9 is removed, the coverage report will be correct as:
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:100.00% of 14
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:void foo(int p)
-: 2:{
-: 3: int e;
1: 4: int b = 0, f = 0, d = 0;
1: 5: if ((p < f) && p) {
1: 6:L:
2: 7: for (e = 0; 0;) ;
-: 8: } else if (d) {
-: 9: // b = (0 >= b);
-: 10: }
-: 11:
6: 12: for (; e <= 3; e++) {
5: 13: if (b) { continue; }
1: 14: b = 3;
1: 15: goto L;
-: 16: }
1: 17:}
-: 18:
1: 19:void main()
-: 20:{
1: 21: int a = -1;
1: 22: foo(a);
1: 23:}
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Subject: [Bug fortran/61765] [7/8/9 Regression] [F03] Rejects valid BIND(C) ENTRY
Date: Sat, 23 Feb 2019 13:16:00 -0000
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
For the record, after revision r267902 the test in pr34500 comment 0 gives an
ICE instead of a wrong error (see pr34500 comment 6).
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 13:19:00 -0000
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 23 13:18:47 2019
New Revision: 269157
URL: https://gcc.gnu.org/viewcvs?rev=269157&root=gcc&view=rev
Log:
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88117
* resolve.c (deferred_op_assign): Return if the lhs expression
has the pointer attribute.
* trans-expr.c (gfc_trans_assignment_1): Do not fix the string
length if the lhs expression has the pointer attribute.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88117
* gfortran.dg/deferred_character_32.f90 : New test
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_32.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 13:25:00 -0000
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Paul Thomas from comment #8)
> Author: pault
> Date: Sat Feb 23 13:18:47 2019
> New Revision: 269157
>
> URL: https://gcc.gnu.org/viewcvs?rev=269157&root=gcc&view=rev
> Log:
> 2019-02-23 Paul Thomas <pault@gcc.gnu.org>
>
> PR fortran/88117
> * resolve.c (deferred_op_assign): Return if the lhs expression
> has the pointer attribute.
> * trans-expr.c (gfc_trans_assignment_1): Do not fix the string
> length if the lhs expression has the pointer attribute.
>
> 2019-02-23 Paul Thomas <pault@gcc.gnu.org>
>
> PR fortran/88117
> * gfortran.dg/deferred_character_32.f90 : New test
>
> Added:
> trunk/gcc/testsuite/gfortran.dg/deferred_character_32.f90
> Modified:
> trunk/gcc/fortran/ChangeLog
> trunk/gcc/fortran/resolve.c
> trunk/gcc/fortran/trans-expr.c
> trunk/gcc/testsuite/ChangeLog
I committed as 'obvious' to trunk. The testcase does not produce correct code
on 8- or 7-branches. The part of the patch in resolve.c fixes this and so I
intend to backport since it is obvious that extra temporary creation should not
be necessary here; pointers being the same as non-allocatable/non-pointer lhs's
in this context.
Please note, that the testcase works fine on trunk if 'z' is made allocatable.
Paul
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Subject: [Bug c++/88294] [9 Regression] ICE on (invalid) C++11 code: in tsubst_copy, at cp/pt.c:15391
Date: Sat, 23 Feb 2019 14:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88294
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sat Feb 23 14:05:31 2019
New Revision: 269158
URL: https://gcc.gnu.org/viewcvs?rev=269158&root=gcc&view=rev
Log:
PR c++/88294 - ICE with non-constant noexcept-specifier.
* pt.c (maybe_instantiate_noexcept): Set up the list of local
specializations. Set current_class_{ptr,ref}.
* g++.dg/cpp0x/noexcept34.C: New test.
* g++.dg/cpp0x/noexcept35.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept34.C
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept35.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88294] [9 Regression] ICE on (invalid) C++11 code: in tsubst_copy, at cp/pt.c:15391
Date: Sat, 23 Feb 2019 14:06:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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From: "yangyibiao at nju dot edu.cn" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/89468] New: [GCOV] wrong frequencies when the block is empty in a if statement
Date: Sat, 23 Feb 2019 14:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89468
Bug ID: 89468
Summary: [GCOV] wrong frequencies when the block is empty in a
if statement
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: yangyibiao at nju dot edu.cn
CC: marxin at gcc dot gnu.org
Target Milestone: ---
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
$ cat small.c
int main()
{
int ret = 0;
int a[2] = {1955, -1957};
for (int i = 0; i < 2; ++i)
{
if (i % 2 == 1 && a[i] != -2 * i - 1955) {
ret = 1;
}
else if (i % 2 == 0 && a[i] != 1955 + 2 * i) {
// ret = 2;
}
}
return ret;
}
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:87.50% of 8
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int main()
-: 2:{
1: 3: int ret = 0;
1: 4: int a[2] = {1955, -1957};
3: 5: for (int i = 0; i < 2; ++i)
-: 6: {
2: 7: if (i % 2 == 1 && a[i] != -2 * i - 1955) {
#####: 8: ret = 1;
-: 9: }
1*: 10: else if (i % 2 == 0 && a[i] != 1955 + 2 * i) {
-: 11: // ret = 2;
-: 12: }
-: 13: }
1: 14: return ret;
-: 15:}
Line #10 should be also executed twice as Line #7.
When Line #11 is not removed, the result is correct as:
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:77.78% of 9
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int main()
-: 2:{
1: 3: int ret = 0;
1: 4: int a[2] = {1955, -1957};
3: 5: for (int i = 0; i < 2; ++i)
-: 6: {
2: 7: if (i % 2 == 1 && a[i] != -2 * i - 1955) {
#####: 8: ret = 1;
-: 9: }
2: 10: else if (i % 2 == 0 && a[i] != 1955 + 2 * i) {
#####: 11: ret = 2;
-: 12: }
-: 13: }
1: 14: return ret;
-: 15:}
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Subject: [Bug c++/89419] [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
Date: Sat, 23 Feb 2019 14:47:00 -0000
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----------------------------------------------------------------------------
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r269094 -- PR88394. Will add the test to trunk.
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Subject: [Bug c++/89419] [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sat Feb 23 14:54:23 2019
New Revision: 269159
URL: https://gcc.gnu.org/viewcvs?rev=269159&root=gcc&view=rev
Log:
PR c++/89419
* g++.dg/cpp1y/lambda-generic-89419.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-89419.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89419] [8/9 Regression] ICE in is_normal_capture_proxy starting with r253601
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Done. PR88394 is still open, so the fix will be backported to 8.
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 23 14:59:50 2019
New Revision: 269160
URL: https://gcc.gnu.org/viewcvs?rev=269160&root=gcc&view=rev
Log:
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88117
* resolve.c (deferred_op_assign): Return if the lhs expression
has the pointer attribute.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88117
* gfortran.dg/deferred_character_32.f90 : New test
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/deferred_character_32.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug gcov-profile/89469] New: [GCOV] wrong frequencies for the first statement in the for(;;) block
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89469
Bug ID: 89469
Summary: [GCOV] wrong frequencies for the first statement in
the for(;;) block
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: yangyibiao at nju dot edu.cn
CC: marxin at gcc dot gnu.org
Target Milestone: ---
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
$ cat small.c
int main()
{
int start = 0, mid = 3, limit = 3, lastMid = 6, r = 0;
for (;;) {
mid = (start + limit) / 2;
if (lastMid == mid) {
break;
}
r = mid == 1 ? 1 : 0;
if (r > 0) {
start = mid;
} else {
return 1;
}
}
return 0;
}
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:80.00% of 10
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int main()
-: 2:{
1: 3: int start = 0, mid = 3, limit = 3, lastMid = 6, r = 0;
-: 4: for (;;) {
1: 5: mid = (start + limit) / 2;
2: 6: if (lastMid == mid) {
#####: 7: break;
-: 8: }
-: 9:
2: 10: r = mid == 1 ? 1 : 0;
-: 11:
2: 12: if (r > 0) {
1: 13: start = mid;
-: 14: } else {
1: 15: return 1;
-: 16: }
-: 17: }
#####: 18: return 0;
-: 19:}
Line #5 is wrongly marked as executed once which should be executed twice.
When Line #7 is removed, the result is correct as:
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:100.00% of 7
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int main()
-: 2:{
1: 3: int start = 0, mid = 3, limit = 3, lastMid = 6, r = 0;
-: 4: for (;;) {
2: 5: mid = (start + limit) / 2;
-: 6: if (lastMid == mid) {
-: 7: // break;
-: 8: }
-: 9:
2: 10: r = mid == 1 ? 1 : 0;
-: 11:
2: 12: if (r > 0) {
1: 13: start = mid;
-: 14: } else {
1: 15: return 1;
-: 16: }
-: 17: }
-: 18: return 0;
-: 19:}
>From gcc-bugs-return-634976-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 15:17:47 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Sat, 23 Feb 2019 15:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89451
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-23
Ever confirmed|0 |1
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
WORKSFORME on x86_64-apple-darwin18 r269156. It doesn't look as a gfortran bug.
>From gcc-bugs-return-634977-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 15:31:40 2019
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From: "yangyibiao at nju dot edu.cn" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/89470] New: [GCOV] wrong frequencies when if statement is executed after a complicated "?:"statement
Date: Sat, 23 Feb 2019 15:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89470
Bug ID: 89470
Summary: [GCOV] wrong frequencies when if statement is executed
after a complicated "?:"statement
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: yangyibiao at nju dot edu.cn
CC: marxin at gcc dot gnu.org
Target Milestone: ---
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
$ cat small.c
int foo()
{
int hints = 2, xi = 1, dy = 18481, adx = 0, ady = 18481;
if (dy != 0 && (adx <= ady >> 4))
{
hints = dy > 0 ? 2 : 1;
if (xi) {
hints ^= 3;
}
}
else
{
hints = 0;
}
return hints;
}
int main()
{
foo();
}
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:90.00% of 10
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int foo()
-: 2:{
1: 3: int hints = 2, xi = 1, dy = 18481, adx = 0, ady = 18481;
1: 4: if (dy != 0 && (adx <= ady >> 4)) {
1*: 5: hints = dy > 0 ? 2 : 1;
2: 6: if (xi) {
1: 7: hints ^= 3;
-: 8: }
-: 9: }
-: 10: else
-: 11: {
#####: 12: hints = 0;
-: 13: }
1: 14: return hints;
-: 15:}
-: 16:
1: 17:int main()
-: 18:{
1: 19: foo();
-: 20:}
Line # 6 is wrongly marked as executed twice which should be only executed
once.
When Line #12 is removed, the result is correst as:
$ gcc -O0 --coverage small.c -w; ./a.out; gcov small.c; cat small.c.gcov
File 'small.c'
Lines executed:100.00% of 9
Creating 'small.c.gcov'
-: 0:Source:small.c
-: 0:Graph:small.gcno
-: 0:Data:small.gcda
-: 0:Runs:1
-: 0:Programs:1
1: 1:int foo()
-: 2:{
1: 3: int hints = 2, xi = 1, dy = 18481, adx = 0, ady = 18481;
1: 4: if (dy != 0 && (adx <= ady >> 4)) {
1*: 5: hints = dy > 0 ? 2 : 1;
1: 6: if (xi) {
1: 7: hints ^= 3;
-: 8: }
-: 9: }
-: 10: else
-: 11: {
-: 12: // hints = 0;
-: 13: }
1: 14: return hints;
-: 15:}
-: 16:
1: 17:int main()
-: 18:{
1: 19: foo();
-: 20:}
>From gcc-bugs-return-634978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 15:54:35 2019
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Subject: [Bug testsuite/87010] FAIL: gcc.dg/torture/20180712-1.c -O1 (test for excess errors)
Date: Sat, 23 Feb 2019 15:54:00 -0000
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--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 45803
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45803&action=edit
Patch
Fixes test failure on hppa.
>From gcc-bugs-return-634979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 16:06:20 2019
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From: "gcc at nmacleod dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 16:06:00 -0000
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--- Comment #6 from Milhouse <gcc at nmacleod dot com> ---
Andrew, can you tell me what the correct algnas() definition should be, as
everywhere it is used seems to be passing a single argument. This is the usage
in shared_ptr_base.h:
alignas(type_info) static constexpr char __tag[sizeof(type_info)] = { };
Also, if possible can you explain what change in gcc-8.3.0 is triggering this
new behaviour (considering gcc-8.2.0 doesn't complain).
Many thanks in advance!
>From gcc-bugs-return-634980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 16:21:57 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 16:21:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE is now gone, but I get segmentation fault at run time. If I comment the
line
z = (z)
I get
ab
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Is this expected?
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Subject: [Bug inline-asm/89471] New: FAIL: gcc.dg/pr84941.c (test for excess errors)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89471
Bug ID: 89471
Summary: FAIL: gcc.dg/pr84941.c (test for excess errors)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: inline-asm
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa*-*-* (32-bit)
Target: hppa*-*-* (32-bit)
Build: hppa*-*-* (32-bit)
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/obj
dir/gcc/ /home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr84941.c
-fno-diagnostics-
show-caret -fno-diagnostics-show-line-numbers -fdiagnostics-color=never -O2 -S
-
o pr84941.s
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr84941.c: In function 'foo':
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr84941.c:9:3: error: 'asm' operand
has impossible constraints
compiler exited with status 1
FAIL: gcc.dg/pr84941.c (test for excess errors)
Excess errors:
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr84941.c:9:3: error: 'asm' operand
has impossible constraints
Doesn't fail on hppa64. Fails on 8.2.1 as well.
>From gcc-bugs-return-634982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 16:29:14 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/87010] FAIL: gcc.dg/torture/20180712-1.c -O1 (test for excess errors)
Date: Sat, 23 Feb 2019 16:29:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|testsuite |inline-asm
--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Given patch, I suspect it should be possible to handle constraints.
>From gcc-bugs-return-634983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 16:31:49 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/704] --help and --version
Date: Sat, 23 Feb 2019 16:31:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #21 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #20)
> (In reply to Eric Gallager from comment #19)
> > (In reply to joseph@codesourcery.com from comment #18)
> > > Whether this is fixed may be determined by running all of the programs
> > > installed in $exec_prefix/bin by current mainline with the --help and
> > > --version options (and confirming the GCC version number is properly shown
> > > in the --version output).
> >
> > looks like gcc-nm and gcc-ranlib still fail with --help:
>
> That's not a fault with the GCC wrappers, it's because the "upstream"
> cctools nm and ranlib don't respond to "--help" (or --version). I have
> amended versions of them that handle --help and --version (available on
> github***) that work:
>
> $ ./gcc/gcc-ar --help
> usage: ar -d [-TLsv] archive file ...
> ar -m [-TLsv] archive file ...
> <snip>
>
> $ ./gcc/gcc-ar --version
> xtools-1.1.0 ar
>
> - the point is that this is not a problem with the GCC wrappers, the
> intention of them is to pass the --help and --version onto the underlying
> commands.
>
> From the point of view of Darwin, I'd say this could be closed, of course it
> might not be completely clean for other platforms.
>
> *** Note: the versions published on github are quite old - on the TODO to
> provide some updates.
OK, closing then.
>From gcc-bugs-return-634984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 16:43:43 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89472] New: FAIL: gcc.dg/debug/dwarf2/inline5.c scan-assembler-times DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+ +[^#/!@\\|]*\\(DIE \\(0x[0-9a-f]*\\) DW_TAG_variable 1
Date: Sat, 23 Feb 2019 16:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89472
Bug ID: 89472
Summary: FAIL: gcc.dg/debug/dwarf2/inline5.c
scan-assembler-times
DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+
+[^#/!@\\|]*\\(DIE \\(0x[0-9a-f]*\\) DW_TAG_variable 1
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa*-*-* (dwarf2)
Target: hppa*-*-* (dwarf2)
Build: hppa*-*-* (dwarf2)
Created attachment 45804
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45804&action=edit
.s file
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/obj
dir/gcc/ /home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c
-fno
-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=n
ever -O -gdwarf -dA -ffat-lto-objects -fno-ident -S -o inline5.s
PASS: gcc.dg/debug/dwarf2/inline5.c (test for excess errors)
PASS: gcc.dg/debug/dwarf2/inline5.c scan-assembler-times
DW_TAG_inlined_subrouti
ne 2
PASS: gcc.dg/debug/dwarf2/inline5.c scan-assembler-times
DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+ +DW_AT_abstract_origin 2
gcc.dg/debug/dwarf2/inline5.c: DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+
+[^#/!@\\|]*\\(DIE \\(0x[0-9a-f]*\\) DW_TAG_variable found 3 times
FAIL: gcc.dg/debug/dwarf2/inline5.c scan-assembler-times
DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+ +[^#/!@\\|]*\\(DIE
\\(0x[0-9a-f]*\\) DW_TAG_variable 1
PASS: gcc.dg/debug/dwarf2/inline5.c scan-assembler-not \\(DIE
\\(0x([0-9a-f]*)\\) DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+
+[^(].*DW_TAG_lexical_block\\)[^#/!@;\\|x]*x\\1[^#/!@;\\|]*[#/!@;\\|]
+DW_AT_abstract_origin
PASS: gcc.dg/debug/dwarf2/inline5.c scan-assembler-not
DW_TAG_lexical_block\\)[^#/!@;\\|x]*x([0-9a-f]*)[^#/!@;\\|]*[#/!@;\\|]+
+DW_AT_abstract_origin.*\\(DIE \\(0x\\1\\)
DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+ +DW_AT
testcase /home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/debug/dwarf2/dwarf2.exp
completed in 2 seconds
>From gcc-bugs-return-634985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:02:44 2019
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89473] New: FAIL: gcc.dg/tree-ssa/builtin-sprintf-10.c (test for excess errors)
Date: Sat, 23 Feb 2019 17:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89473
Bug ID: 89473
Summary: FAIL: gcc.dg/tree-ssa/builtin-sprintf-10.c (test for
excess errors)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/obj
dir/gcc/
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10
.c -fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-
color=never -O2 -Wall -fdump-tree-optimized -S -o builtin-sprintf-10.s
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c: In
fu
nction 'elim_wide_char_call':
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c:50:25:
warning: format '%lc' expects argument of type 'wint_t', but argument 4 has
typ
e 'long int' [-Wformat=]
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c:26:9:
note: in definition of macro 'ELIM'
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c:50:28:
note: format string is defined here
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c:51:25:
warning: format '%lc' expects argument of type 'wint_t', but argument 4 has
typ
e 'long int' [-Wformat=]
[...]
FAIL: gcc.dg/tree-ssa/builtin-sprintf-10.c (test for excess errors)
Excess errors:
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-10.c:50:25:
warning: format '%lc' expects argument of type 'wint_t', but argument 4 has
type 'long int' [-Wformat=]
[...]
>From gcc-bugs-return-634986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:05:56 2019
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From: "tk at tkoenig dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 17:05:00 -0000
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--- Comment #12 from tk at tkoenig dot net ---
> --- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The ICE is now gone, but I get segmentation fault at run time. If I comment the
> line
>
> z = (z)
>
> I get
>
> ab
>
> Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
>
> Is this expected?
Yes. The pointer is not pointing at a valid target.
>From gcc-bugs-return-634987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:06:19 2019
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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89474] New: ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Sat, 23 Feb 2019 17:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89474
Bug ID: 89474
Summary: ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C code:
a;
b(double);
c() {
while (d())
b(a);
}
compiled with recent gcc trunk and compiler flags -O3 -march=native,
does this:
during RTL pass: ira
bug507.c:6:1: internal compiler error: in df_reg_chain_verify_unmarked, at
df-scan.c:3995
6 | }
| ^
0x61ca63 df_reg_chain_verify_unmarked
../../trunk/gcc/df-scan.c:3995
The bug seems to start between revisions 269100 and 269150.
/proc/cpuinfo says
vendor_id : AuthenticAMD
cpu family : 21
model : 2
model name : AMD FX(tm)-8350 Eight-Core Processor
>From gcc-bugs-return-634988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:16:09 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sat, 23 Feb 2019 17:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
--- Comment #10 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #9)
> A patch that does this has been posted here:
>
> https://gcc.gnu.org/ml/fortran/2019-02/msg00153.html
This patch also fixes PR88326.
>From gcc-bugs-return-634989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:19:16 2019
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Subject: [Bug target/83443] FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c (test for warnings, line 119)
Date: Sat, 23 Feb 2019 17:19:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed|2018-01-15 00:00:00 |2019-02-23
Ever confirmed|0 |1
--- Comment #9 from John David Anglin <danglin at gcc dot gnu.org> ---
The test doesn't fail on hppa64-*=hpux*.
>From gcc-bugs-return-634991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:57:49 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}
Date: Sat, 23 Feb 2019 17:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
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>From gcc-bugs-return-634990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 17:57:27 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89475] New: Teach ccp about __builtin_bswap{16,32,64}
Date: Sat, 23 Feb 2019 17:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89475
Bug ID: 89475
Summary: Teach ccp about __builtin_bswap{16,32,64}
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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When looking at PR89435, I've noticed ccp should be able, but doesn't, optimize
__builtin_bswap{16,32,64}.
Those builtins should preserve both the mask and INTEGER_CST from the argument,
just bswapped.
Short testcase:
void link_error (void);
unsigned short
f0 (unsigned short x)
{
x &= 0xaa55;
x = __builtin_bswap16 (x);
if (x & 0xaa55)
link_error ();
return x;
}
unsigned short
f1 (unsigned short x)
{
x &= 0x55aa;
x = __builtin_bswap16 (x);
if (x & 0x55aa)
link_error ();
return x;
}
unsigned int
f2 (unsigned int x)
{
x &= 0x55aa5aa5U;
x = __builtin_bswap32 (x);
if (x & 0x5aa555aaU)
link_error ();
return x;
}
unsigned long long int
f3 (unsigned long long int x)
{
x &= 0x55aa5aa544cc2211ULL;
x = __builtin_bswap64 (x);
if (x & 0xeedd33bb5aa555aaULL)
link_error ();
return x;
}
unsigned short
f4 (unsigned short x)
{
x = __builtin_bswap32 (x);
if (x != 0)
link_error ();
return x;
}
unsigned int
f5 (unsigned int x)
{
x = __builtin_bswap64 (x);
if (x != 0)
link_error ();
return x;
}
unsigned short
f6 (unsigned short x)
{
x |= 0xaa55;
x = __builtin_bswap16 (x);
if ((x | 0xaa55) != 0xffff)
link_error ();
return x;
}
unsigned short
f7 (unsigned short x)
{
x |= 0x55aa;
x = __builtin_bswap16 (x);
if ((x | 0x55aa) != 0xffff)
link_error ();
return x;
}
unsigned int
f8 (unsigned int x)
{
x |= 0x55aa5aa5U;
x = __builtin_bswap32 (x);
if ((x | 0x5aa555aaU) != 0xffffffffU)
link_error ();
return x;
}
unsigned long long int
f9 (unsigned long long int x)
{
x |= 0x55aa5aa544cc2211ULL;
x = __builtin_bswap64 (x);
if ((x | 0xeedd33bb5aa555aaULL) != 0xffffffffffffffffULL)
link_error ();
return x;
}
Perhaps somewhat related to PR55177.
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Subject: [Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45805
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45805&action=edit
gcc9-pr89475.patch
Untested improvement. GCC10 material I guess.
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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--- Comment #9 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat Feb 23 18:07:10 2019
New Revision: 269161
URL: https://gcc.gnu.org/viewcvs?rev=269161&root=gcc&view=rev
Log:
2019-02-23 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/84387
* trans-io.c (transfer_expr): Do not return if there are no
components to the derived type or class.
* gfortran.dg/dtio_34.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/dtio_34.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-io.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-634994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 18:12:28 2019
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:12:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Your xsltproc is broken, the --nonet option means it should not try to download
DTDs.
>From gcc-bugs-return-634995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 18:13:20 2019
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a known bug on Suse, I think Richi looked into it a while ago.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:21:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Apparently Suse's xsltproc 1.1.32 works properly, so please either uninstall
xsltproc or upgrade to a fixed version.
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 18:24:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
alignas is a keyword in C++, it's not supposed to be a macro at all.
GCC 8.3.0 now uses alignas in the standard library headers, which is OK because
it's a C++ feature supported by the compiler. Stop defining a macro with the
name of a keyword, that's undefined.
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Sat, 23 Feb 2019 18:26:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> The problem is in https://github.com/Silicondust/libhdhomerun:
> hdhomerun_os_posix.h
> Which does:
> #if !defined(alignas)
> #define alignas(n) __attribute__((aligned(n)))
> #endif
This would be less broken as:
#if !defined(__cplusplus) && !defined(alignas)
#define alignas(n) __attribute__((aligned(n)))
#endif
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:31:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> Your xsltproc is broken, the --nonet option means it should not try to
> download DTDs.
So, the hyperlink can be safely removed or redirected to /dev/null?
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:32:00 -0000
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No. It's a key used to lookup an entry in the xmlcatalog database.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:36:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See 'man xmlcatalog' and http://www.xmlsoft.org/catalog.html and
http://www.jclark.com/sp/catalog.htm
The xsltproc command is correct, and does not connect to the internet, it just
queries the local catalog. Your xsltproc has a bug, not GCC.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #4)
> Apparently Suse's xsltproc 1.1.32 works properly, so please either uninstall
> xsltproc or upgrade to a fixed version.
It is an absolute no-no to access the net from a configure script.
If see a few options:
1. If it is not needed (as you seem to imply, because otherwiseI could
not remove it) remove the use of xsltproc in configure
2. If if is needed after all, then put a working version into
the prerequesites, include a version check and fail at
configure time if the version shows this broken behavior.
As an aside, putting in a hyperlink as a database entry seems...
asking for trouble, to put it mildly.
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 18:46:00 -0000
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--- Comment #13 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 23 18:44:54 2019
New Revision: 269163
URL: https://gcc.gnu.org/viewcvs?rev=269163&root=gcc&view=rev
Log:
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88117
* resolve.c (deferred_op_assign): Return if the lhs expression
has the pointer attribute.
2019-02-23 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88117
* gfortran.dg/deferred_character_32.f90 : New test
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/deferred_character_32.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #8)
> (In reply to Jonathan Wakely from comment #4)
> > Apparently Suse's xsltproc 1.1.32 works properly, so please either uninstall
> > xsltproc or upgrade to a fixed version.
>
> It is an absolute no-no to access the net from a configure script.
It doesn't access the net, it runs a local-only command. Your system is buggy.
>
> If see a few options:
>
> 1. If it is not needed (as you seem to imply, because otherwiseI could
> not remove it) remove the use of xsltproc in configure
No. It's needed to tell if we can generate the docs.
> 2. If if is needed after all, then put a working version into
> the prerequesites, include a version check and fail at
> configure time if the version shows this broken behavior.
It's a Suse-specific bug, the same version of xsltproc works fine for me on
Fedora.
> As an aside, putting in a hyperlink as a database entry seems...
> asking for trouble, to put it mildly.
XML is not my fault.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 18:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #9)
> It's a Suse-specific bug, the same version of xsltproc works fine for me on
> Fedora.
The version on my system is
xsltproc -V
Using libxml 20904, libxslt 10128 and libexslt 817
xsltproc was compiled against libxml 20904, libxslt 10128 and libexslt 817
libxslt 10128 was compiled against libxml 20904
libexslt 817 was compiled against libxml 20904
Is this the same output as on your sytem?
>From gcc-bugs-return-635006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 18:56:06 2019
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Subject: [Bug fortran/88117] [9 Regression] ICE in gimplify_var_or_parm_decl, at gimplify.c:2697
Date: Sat, 23 Feb 2019 18:56:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on 7- thru' 9-branches.
Thanks for the report and Thanks again to Thomas for the detective work.
Paul
>From gcc-bugs-return-635007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 18:58:29 2019
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 45806
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45806&action=edit
Check for working xmlcatalog
Does this help?
>From gcc-bugs-return-635008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 19:00:55 2019
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #10)
> Is this the same output as on your sytem?
No, my version is newer, but I've tested your version previously. You have
libxslt 1.1.28, and it's buggy for some reason.
>From gcc-bugs-return-635009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 19:02:35 2019
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Subject: [Bug fortran/89476] New: FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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Bug ID: 89476
Summary: FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
Product: gcc
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CC: pault at gcc dot gnu.org
Target Milestone: ---
On Linux/x86-64, r269156 gave
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -O0 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -O1 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -O2 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess
errors)
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -O3 -g (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_5.f90 -Os (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -O0 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -O1 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -O2 (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess
errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -O3 -g (test for excess errors)
FAIL: gfortran.dg/ISO_Fortran_binding_6.f90 -Os (test for excess errors)
>From gcc-bugs-return-635010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 19:03:30 2019
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #11)
> Created attachment 45806 [details]
> Check for working xmlcatalog
>
> Does this help?
I'm giving it a spin, it will take an hour or so.
>From gcc-bugs-return-635011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 19:05:45 2019
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Subject: [Bug fortran/89476] FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-23
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c:7:10: fatal error:
ISO_Fortran_binding.h: No such file or directory
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Subject: [Bug fortran/89476] FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
They should use
#include "../../../libgfortran/ISO_Fortran_binding.h"
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
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--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://trac.osgeo.org/postgis/ticket/963
Looks more like you don't have those dtd installed ...
This referenced bug report is from 8 years ago complaining about the same
thing.
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Sat, 23 Feb 2019 19:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #14)
> https://trac.osgeo.org/postgis/ticket/963
>
> Looks more like you don't have those dtd installed ...
The point of the configure checks is to find out if they're installed, and if
they're usable. It should fail immediately if not, because of the --nonet
option.
> This referenced bug report is from 8 years ago complaining about the same
> thing.
Not exactly. In that bug report they say that using --nonet makes it fail
immediately, not try to download the DTDs. That's how it's supposed to work.
It's not a problem for the DTDs to be missing, the configure script detects
that. The problem is a buggy version of xsltproc that ignores the --nonet
option.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #11)
> Created attachment 45806 [details]
> Check for working xmlcatalog
>
> Does this help?
I'm bootstrapping right now, and it seems the problem is gone.
Looks good from my side.
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89461
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This might help, but probably isn't the right fix:
--- a/libstdc++-v3/include/experimental/io_context
+++ b/libstdc++-v3/include/experimental/io_context
@@ -134,7 +134,8 @@ inline namespace v1
io_context* _M_ctx;
};
- using count_type = size_t;
+ using count_type
+ = conditional_t<atomic<size_t>::is_always_lock_free(), size_t, int>;
// construct / copy / destroy:
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, that should be:
--- a/libstdc++-v3/include/experimental/io_context
+++ b/libstdc++-v3/include/experimental/io_context
@@ -134,7 +134,8 @@ inline namespace v1
io_context* _M_ctx;
};
- using count_type = size_t;
+ using count_type
+ = conditional_t<ATOMIC_LONG_LOCK_FREE == 2, unsigned long, unsigned
int>;
// construct / copy / destroy:
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Subject: [Bug driver/69471] "-march=native" unintentionally breaks further -march/-mtune flags
Date: Sat, 23 Feb 2019 19:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69471
--- Comment #10 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sat Feb 23 19:39:35 2019
New Revision: 269164
URL: https://gcc.gnu.org/viewcvs?rev=269164&root=gcc&view=rev
Log:
driver: Also prune joined switches with negation
When -march=native is passed to host_detect_local_cpu to the backend,
it overrides all command lines after it. That means
$ gcc -march=native -march=skylake-avx512
is the treated as
$ gcc -march=skylake-avx512 -march=native
Prune joined switches with Negative and RejectNegative to allow
-march=skylake-avx512 to override previous -march=native on command-line.
gcc/
PR driver/69471
* opts-common.c (prune_options): Also prune joined switches
with Negative and RejectNegative.
* config/i386/i386.opt (march=): Add Negative(march=).
(mtune=): Add Negative(mtune=).
* doc/options.texi: Document Negative used together with Joined
and RejectNegative.
gcc/testsuite/
PR driver/69471
* gcc.dg/pr69471-1.c: New test.
* gcc.dg/pr69471-2.c: Likewise.
* gcc.target/i386/pr69471-3.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/pr69471-1.c
trunk/gcc/testsuite/gcc.dg/pr69471-2.c
trunk/gcc/testsuite/gcc.target/i386/pr69471-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.opt
trunk/gcc/doc/options.texi
trunk/gcc/opts-common.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89476] FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89476
--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sat Feb 23 19:58:52 2019
New Revision: 269165
URL: https://gcc.gnu.org/viewcvs?rev=269165&root=gcc&view=rev
Log:
Include "../../../libgfortran/ISO_Fortran_binding.h"
PR testsuite/89476
* gfortran.dg/ISO_Fortran_binding_5.c: Include
"../../../libgfortran/ISO_Fortran_binding.h".
* gfortran.dg/ISO_Fortran_binding_6.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
trunk/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
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Subject: [Bug fortran/89476] FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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Subject: [Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}
Date: Sat, 23 Feb 2019 20:35:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
x &= 0xaa55;
x = __builtin_bswap16 (x);
if (x & 0xaa55)
I think that should be:
x &= 0xaa55;
x = __builtin_bswap16 (x);
if (x & 0x55aa)
instead.
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Subject: [Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}
Date: Sat, 23 Feb 2019 20:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89475
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> x &= 0xaa55;
> x = __builtin_bswap16 (x);
> if (x & 0xaa55)
>
>
> I think that should be:
> x &= 0xaa55;
> x = __builtin_bswap16 (x);
> if (x & 0x55aa)
>
> instead.
Never mind; I can't do math this morning, ~0xaa55 is 0x55aa :).
>From gcc-bugs-return-635023-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 20:42:38 2019
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Subject: [Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}
Date: Sat, 23 Feb 2019 20:42:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> (In reply to Andrew Pinski from comment #2)
> > x &= 0xaa55;
> > x = __builtin_bswap16 (x);
> > if (x & 0xaa55)
> >
> >
> > I think that should be:
> > x &= 0xaa55;
> > x = __builtin_bswap16 (x);
> > if (x & 0x55aa)
> >
> > instead.
>
> Never mind; I can't do math this morning, ~0xaa55 is 0x55aa :).
Yeah, __builtin_bswap16 (~0xaa55) == 0xaa55.
>From gcc-bugs-return-635024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 20:54:28 2019
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From: "arthur.j.odwyer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89477] New: Incorrect CTAD deduction guides for set and multiset
Date: Sat, 23 Feb 2019 20:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89477
Bug ID: 89477
Summary: Incorrect CTAD deduction guides for set and multiset
Product: gcc
Version: unknown
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Priority: P3
Component: libstdc++
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I just implemented set/multiset deduction guides for libc++ because they were
missing entirely. My regression test fails on libstdc++ trunk.
The full test is here (non-GNU code warning!) https://reviews.llvm.org/D58582
and https://godbolt.org/z/4-OFMh
The reduced test case is:
```
// https://godbolt.org/z/0TNJ59
#include <set>
#include <memory_resource>
int main()
{
std::pmr::polymorphic_allocator<int> a;
int arr[] = {1,2,3};
std::set s(arr, arr+3, a); // ERROR
std::set t({1, 2, 3}, a); // ERROR
}
```
libstdc++ believes that CTAD is ambiguous here because although it is obvious
that "arr" and "arr+3" are InputIterators, it is not sure whether
"std::pmr::polymorphic_allocator<int>()" is intended to be an Allocator or a
Compare.
http://eel.is/c++draft/container.requirements#associative.reqmts-15.3
is clear that a deduction guide template parameter named Compare should not
pick up anything which "qualifies as an allocator." So this CTAD should be
unambiguous.
>From gcc-bugs-return-635025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 21:03:33 2019
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Subject: [Bug testsuite/89473] FAIL: gcc.dg/tree-ssa/builtin-sprintf-10.c (test for excess errors)
Date: Sat, 23 Feb 2019 21:03:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The failures were due to bug 77970. These should be gone with r269137 and
r269167. Please reopen if they persist.
>From gcc-bugs-return-635026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 21:09:16 2019
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sat, 23 Feb 2019 21:09:00 -0000
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--- Comment #3 from Neil Carlson <neil.n.carlson at gmail dot com> ---
r265171 is the commit that broke the 9.0 trunk; r265171 segfaults but r265170
works correctly. I haven't been able to pinpoint where this stuff was
back-ported to the 8 branch, but it definitely was. This example used to work
for 7, 8, and 9.
>From gcc-bugs-return-635027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 21:11:41 2019
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Subject: [Bug target/83443] FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c (test for warnings, line 119)
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Has r269166 made a difference in clearing up these failures?
>From gcc-bugs-return-635028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 21:13:46 2019
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Subject: [Bug tree-optimization/89478] New: missed optimization for lambda expression when variable is uninitialized when declared
Date: Sat, 23 Feb 2019 21:13:00 -0000
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Bug ID: 89478
Summary: missed optimization for lambda expression when
variable is uninitialized when declared
Product: gcc
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testcase:
constexpr void mul2(int &a, const int b)
{
a = b * 2;
}
int test = []() {int a; mul2(a, 123); return a;}();
int test2 = []() {int a = 0; mul2(a, 123); return a;}();
output for GCC trunk with -O3 -std=c++17
_GLOBAL__sub_I_test:
movl $246, test(%rip)
ret
test2:
.long 246
test:
.zero 4
simple testcase:
int test3 = []() {int a; a = 5; return a;}();
_GLOBAL__sub_I_test:
movl $5, test(%rip)
ret
test:
.zero 4
>From gcc-bugs-return-635030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 21:16:18 2019
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Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug fortran/87566] ICE with class(*) and select
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Neil Carlson <neil.n.carlson at gmail dot com> changed:
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--- Comment #12 from Neil Carlson <neil.n.carlson at gmail dot com> ---
The commit r265171 that fixed this issue also introduced a regression in 8.2
and 9, and certainly the 7 branch too if it was back-ported to it. See PR89174
for the example, which had worked correctly for 7, 8, and 9, but which now
segfaults on at least 8 and 9. I suppose it's too late revert that patch ...
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Subject: [Bug tree-optimization/89478] missed optimization for lambda expression when variable is uninitialized when declared
Date: Sat, 23 Feb 2019 21:38:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
I think the uninitialized variable makes the initialization not constexpr (and
indeed gcc/clang complain if you try to declare test constexpr). Then we hit
the well-known missed optimization that gcc is unable to convert a dynamic
initialization into a static initialization even in the most trivial constant
cases.
>From gcc-bugs-return-635032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:17:07 2019
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Subject: [Bug fortran/86119] [8 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 23 22:16:29 2019
New Revision: 269170
URL: https://gcc.gnu.org/viewcvs?rev=269170&root=gcc&view=rev
Log:
2019-02-23 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/86119
Backport from trunk
* class.c (gfc_get_len_component): Add argument k for kind.
If the kind of the resulting expression is not equal to k,
convert it.
* gfortran.h (gfc_len_component): Adjust prototype.
* simplify.c (gfc_simplify_len): Pass kind to
gfc_get_len_component.
2019-02-23 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/86119
Backport from trunk
* gfortran.dg/warn_conversion_11.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/warn_conversion_11.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/class.c
branches/gcc-8-branch/gcc/fortran/gfortran.h
branches/gcc-8-branch/gcc/fortran/simplify.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:19:22 2019
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Subject: [Bug fortran/86119] [8 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all affected branches, closing.
>From gcc-bugs-return-635034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:36:39 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I also cannot reproduce this.
>From gcc-bugs-return-635035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:39:26 2019
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From: "eyalroz at technion dot ac.il" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89479] New: __restrict
Date: Sat, 23 Feb 2019 22:39:00 -0000
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Bug ID: 89479
Summary: __restrict
Product: gcc
Version: 9.0
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(This is all illustrated at: https://godbolt.org/z/nz2YXE )
Let us make our language C++17. Consider the following function:
int foo(const int* x, void g())
{
int result = *x;
g();
result += *x;
return result;
}
since we have no aliasing guarantees, we must assume the invocation of g() may
change the value at address x, so we must perform two reads from x to compute
the result - one before the call and one after.
If, however, we add __restrict__ specifier to x:
int bar(const int* __restrict__ x, void g())
{
int result = *x;
g();
result += *x;
return result;
}
we may assume x "points to an unaliased integer" (as per
https://gcc.gnu.org/onlinedocs/gcc/Restricted-Pointers.html ). That means we
can read from address x just once, and double the value to get our result. I
realize there's a subtle point here, which is whether being "unaliased" also
applies to g()'s behavior. It is my understanding that it does.
Well, clang 7.0 understands things they way I do, and indeed optimizes one of
the reads away in `bar()`. But - g++ 8.3 (and g++ "trunk", whatever that means
on GodBolt) doesn't do so, and reads _twice_ from x both in `foo()` and in
`bar()`.
>From gcc-bugs-return-635037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:55:10 2019
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Subject: [Bug tree-optimization/81009] missing aliasing optimization for const restrict pointers
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Marc Glisse <glisse at gcc dot gnu.org> changed:
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--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
*** Bug 89479 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 22:55:10 2019
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Subject: [Bug tree-optimization/89479] __restrict
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Marc Glisse <glisse at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |alias, missed-optimization
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Seems similar enough.
*** This bug has been marked as a duplicate of bug 81009 ***
>From gcc-bugs-return-635038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 23 23:25:14 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84605] [7/8/9 Regression] internal compiler error: in xref_basetypes, at cp/decl.c:13818
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Looking into it.
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/80635] std::optional and bogus -Wmaybe-uninitialized warning
Date: Sat, 23 Feb 2019 23:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-23
Ever confirmed|0 |1
--- Comment #18 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-635040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 00:17:40 2019
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 00:17:00 -0000
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Just tried out r265170 on powerpc64le (because that machine
boots faster :-), and the test case also segfaults.
Hmm...
>From gcc-bugs-return-635041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 00:29:46 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/78969] bogus snprintf truncation warning due to missing range info
Date: Sun, 24 Feb 2019 00:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78969
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #14)
> Martin: Can you please take a look at the last comment?
There is very little to go on in comment #13. Please provide a complete test
case that reproduces the warning you think is a false positive.
The warning for the test case in comment #0 and comment #4 was fixed by r257857
in GCC 8.0.1:
r257857 | law | 2018-02-20 13:59:22 -0500 (Tue, 20 Feb 2018) | 8 lines
PR middle-end/82123
PR tree-optimization/81592
PR middle-end/79257
* gimple-ssa-sprintf.c (format_integer): Query EVRP range analyzer
for range data rather than using global data.
* gcc.dg/pr81592.c: New test.
* gcc.dg/pr82123.c: New test.
The test cases in comment #11 and comment #12 still trigger a warning with GCC
9 so I'm tempted to treat those as separate (and move them to a bug of their
own) and resolve this bug as fixed.
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Subject: [Bug target/89474] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Sun, 24 Feb 2019 01:11:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target| |x86_64-*-linux-gnu
Component|c |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>-march=native,
Can you provide gcc -v output when compiling this file?
>From gcc-bugs-return-635043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 02:02:05 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Sun, 24 Feb 2019 02:02:00 -0000
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--- Comment #12 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Sun Feb 24 02:01:05 2019
New Revision: 269174
URL: https://gcc.gnu.org/viewcvs?rev=269174&root=gcc&view=rev
Log:
[RS6000] Fix <bd>_<mode> and <bd>tf_<mode> splitters
This patch fixes a bug that can result in "insn does not satisfy its
constraints" if these splitters fire due to not getting ctr for the
jump insn. Since the jump insn can have any of r,m,d,wi,c,l as the
decremented count output, it's not sufficient to check for
gpc_reg_operand (which matches VSX regs for example). Seen after
correcting register_move_cost when the cost of gpr <-> vsx is much
lower. Since this is a prerequisite to fixing PR89271, I'm mentioning
that PR in the ChangeLog.
The <bd>tf_<mode> split had a further bug in that it wouldn't match
if the count output was m,d,wi, or l.
PR target/89271
* config/rs6000/rs6000.md (<bd>_<mode> split): Check for an int
output reg on add insn.
(<bd>tf_<mode> split): Likewise. Match predicates with insn.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Sun, 24 Feb 2019 03:37:00 -0000
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Orion Poplawski <orion at cora dot nwra.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |orion at cora dot nwra.com
--- Comment #3 from Orion Poplawski <orion at cora dot nwra.com> ---
This change appears to break building of the score-p profiler at least with
clang++ 7.0.1:
/bin/sh ./libtool --tag=CXX --mode=compile /usr/bin/clang++ -DHAVE_CONFIG_H
-I. -I../../build-libwrap -I./../src -I../../build-libwrap/../src
-DLIBWRAP_BUILD -I../src/utils/include
-I../../build-libwrap/../src/utils/include
-I../../build-libwrap/../vendor/common/src/utils/include -g -O2 -c -o
libscorep_tools_la-scorep_tools_dir.lo `test -f
'../src/tools/lib/scorep_tools_dir.cpp' || echo
'../../build-libwrap/'`../src/tools/lib/scorep_tools_dir.cpp
libtool: compile: /usr/bin/clang++ -DHAVE_CONFIG_H -I. -I../../build-libwrap
-I./../src -I../../build-libwrap/../src -DLIBWRAP_BUILD -I../src/utils/include
-I../../build-libwrap/../src/utils/include
-I../../build-libwrap/../vendor/common/src/utils/include -g -O2 -c
../../build-libwrap/../src/tools/lib/scorep_tools_dir.cpp -fPIC -DPIC -o
.libs/libscorep_tools_la-scorep_tools_dir.o
BUILDSTDERR: In file included from
../../build-libwrap/../src/tools/lib/scorep_tools_dir.cpp:19:
BUILDSTDERR: In file included from
../../build-libwrap/../src/tools/lib/scorep_tools_dir.hpp:22:
BUILDSTDERR: In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/string:55:
BUILDSTDERR: In file included from
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/basic_string.h:40:
BUILDSTDERR:
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:604:44:
error: 'copy' is a protected member of 'std::__is_alloc_insertable_impl'
BUILDSTDERR: : __is_alloc_insertable_impl::template copy<_Alloc>
BUILDSTDERR: ^
BUILDSTDERR:
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:595:7:
note: declared protected here
BUILDSTDERR: using copy = decltype(_M_select<_Alloc, const _Tp&>(0));
BUILDSTDERR: ^
BUILDSTDERR:
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:616:44:
error: 'move' is a protected member of 'std::__is_alloc_insertable_impl'
BUILDSTDERR: : __is_alloc_insertable_impl::template move<_Alloc>
BUILDSTDERR: ^
BUILDSTDERR:
/usr/bin/../lib/gcc/x86_64-redhat-linux/9/../../../../include/c++/9/bits/alloc_traits.h:598:7:
note: declared protected here
BUILDSTDERR: using move = decltype(_M_select<_Alloc, _Tp>(0));
BUILDSTDERR: ^
Apparently just by including <string>
>From gcc-bugs-return-635045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 03:46:16 2019
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Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
Date: Sun, 24 Feb 2019 03:46:00 -0000
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--- Comment #2 from Andres Takach <andres_takach at mentor dot com> ---
Tried 8.3.0 (took hours to compile!) and it has the same behavior.
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Subject: [Bug c++/89480] New: internal compiler error: in unify, at cp/pt.c:22160 with the template argument force conversion.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89480
Bug ID: 89480
Summary: internal compiler error: in unify, at cp/pt.c:22160
with the template argument force conversion.
Product: gcc
Version: 8.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: kutdanila at yandex dot ru
Target Milestone: ---
Created attachment 45807
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45807&action=edit
Source file
Command line
`g++ test.cpp -o test`
Source file is attached
The code itself:
template <typename Foo, Foo Part>
struct TSelect {};
enum What {
The
};
template <typename Foo>
struct AnotherOneSelector {
static constexpr Foo Id = Foo::The;
};
template <typename Foo, typename SelectPartType>
struct THelper;
template <typename Foo>
struct THelper<Foo, TSelect<Foo, Foo{AnotherOneSelector<Foo>::Id}>> {};
int main() {
THelper<What, TSelect<What, What::The>> t;
}
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Sun, 24 Feb 2019 07:27:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reopened
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Subject: [Bug tree-optimization/89479] __restrict
Date: Sun, 24 Feb 2019 07:44:00 -0000
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Eyal Rozenberg <eyalroz at technion dot ac.il> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|DUPLICATE |---
--- Comment #2 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
(In reply to Marc Glisse from comment #1)
> Seems similar enough.
With respect - this is not about x being a const __restrict pointer; what I
said (including the clang behavior) applies exactly the same when we remove the
const. See: https://godbolt.org/z/hH643a (where the const is gone).
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Sun, 24 Feb 2019 07:59:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45760|0 |1
is obsolete| |
--- Comment #13 from Alan Modra <amodra at gmail dot com> ---
Created attachment 45808
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45808&action=edit
Current set of patches
>From gcc-bugs-return-635050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 08:16:23 2019
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Subject: [Bug tree-optimization/89479] __restrict
Date: Sun, 24 Feb 2019 08:16:00 -0000
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--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
Hmm indeed they are different (it would have been clearer to omit const in the
initial testcase). I couldn't find an obvious duplicate in bug 49774.
>From gcc-bugs-return-635051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 08:23:43 2019
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Subject: [Bug target/88469] [7/8 regression] AAPCS/AAPCS64 - Struct with 64-bit bitfield (128-bit on AArch64) may be passed in wrong registers
Date: Sun, 24 Feb 2019 08:23:00 -0000
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--- Comment #12 from Stefan Ring <stefanrin at gmail dot com> ---
Unfortunately my armv5 device has died in the meantime, so I cannot verify my
original use case. The behavior is indeed different on armv7. It does not trap,
even for the original misaligned code. And contrary to x86, where the alignment
check flag can be changed by user space, this is a privileged operation on arm,
so I cannot even selectively enable it.
>From gcc-bugs-return-635052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 08:46:17 2019
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Subject: [Bug target/89474] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Sun, 24 Feb 2019 08:46:00 -0000
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--- Comment #2 from David Binderman <dcb314 at hotmail dot com> ---
Using built-in specs.
COLLECT_GCC=/home/dcb/gcc/results/bin/gcc
Target: x86_64-pc-linux-gnu
Configured with: ../trunk/configure --prefix=/home/dcb/gcc/results.269150
--disa
ble-multilib --disable-werror --enable-checking=df,extra,fold,rtl,yes
--enable-l
anguages=c,c++,fortran
Thread model: posix
gcc version 9.0.1 20190223 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-O3' '-march=native' '-c' '-w' '-v'
/home/dcb/gcc/results.269150/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/cc1 -quiet
-
v bug507.c -march=bdver2 -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -msse4a
-m
cx16 -msahf -mno-movbe -maes -mno-sha -mpclmul -mpopcnt -mabm -mlwp -mfma
-mfma4
-mxop -mbmi -mno-sgx -mno-bmi2 -mno-pconfig -mno-wbnoinvd -mtbm -mavx
-mno-avx2
-msse4.2 -msse4.1 -mlzcnt -mno-rtm -mno-hle -mno-rdrnd -mf16c -mno-fsgsbase
-mn
o-rdseed -mprfchw -mno-adx -mfxsr -mxsave -mno-xsaveopt -mno-avx512f
-mno-avx512
er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1 -mno-clflushopt -mno-xsavec
-mno
-xsaves -mno-avx512dq -mno-avx512bw -mno-avx512vl -mno-avx512ifma
-mno-avx512vbm
i -mno-avx5124fmaps -mno-avx5124vnniw -mno-clwb -mno-mwaitx -mno-clzero
-mno-pku
-mno-rdpid -mno-gfni -mno-shstk -mno-avx512vbmi2 -mno-avx512vnni -mno-vaes
-mno
-vpclmulqdq -mno-avx512bitalg -mno-movdiri -mno-movdir64b -mno-waitpkg
-mno-clde
mote -mno-ptwrite --param l1-cache-size=16 --param l1-cache-line-size=64
--param
l2-cache-size=2048 -mtune=bdver2 -quiet -dumpbase bug507.c -auxbase bug507 -O3
-w -version -o /tmp/ccO1klSX.s
GNU C17 (GCC) version 9.0.1 20190223 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.1 20190223 (experimental), GMP version
6.1
.2, MPFR version 3.1.6-p2, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/home/dcb/gcc/results.269150/lib/gcc/x86_64-pc-l
inux-gnu/9.0.1/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/home/dcb/gcc/results.269150/lib/gcc/x86_64-pc-linux-gnu/9.0.1/include
/usr/local/include
/home/dcb/gcc/results.269150/include
/home/dcb/gcc/results.269150/lib/gcc/x86_64-pc-linux-gnu/9.0.1/include-fixed
/usr/include
End of search list.
GNU C17 (GCC) version 9.0.1 20190223 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.1 20190223 (experimental), GMP version
6.1
.2, MPFR version 3.1.6-p2, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: f1cd29d4369196367e92853cfa6243b0
during RTL pass: ira
bug507.c: In function ‘c’:
bug507.c:6:1: internal compiler error: in df_reg_chain_verify_unmarked, at
df-sc
an.c:3995
6 | }
| ^
0x61ca63 df_reg_chain_verify_unmarked
../../trunk/gcc/df-scan.c:3995
Everything is ok at -O3, so it looks machine type specific.
>From gcc-bugs-return-635053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 09:24:41 2019
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From: "mickey.veksler at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89481] New: constexpr function allows writing one active union member and reading another
Date: Sun, 24 Feb 2019 09:24:00 -0000
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Bug ID: 89481
Summary: constexpr function allows writing one active union
member and reading another
Product: gcc
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The following code should not compile, not when passed as a template argument
to std::intergral_constant<bool, all_zeros()> :
constexpr bool all_zeros()
{
union mix {
double numeric;
char bytes[sizeof(double)+1];
};
mix zero{-0.0}; // active is 'numeric'
// setting a different active member(?):
zero.bytes[sizeof(double)] = '\0';
for (unsigned i=0 ; i != sizeof(double) ; ++i)
{
// or this is illegal (since it was never initialized through 'bytes')
if (zero.bytes[i])
return false;
}
return true;
}
The puzzling thing is that the following two give different results:
int main()
{
// return all_zeros();
return std::integral_constant<bool, all_zeros()>::value;
}
Unlike gcc, clang-7.0.0 emits diagnostics:
<source>:3:16: error: constexpr function never produces a constant expression
[-Winvalid-constexpr]
constexpr bool all_zeros()
^
<source>:10:32: note: assignment to member 'bytes' of union with active
member 'numeric' is not allowed in a constant expression
zero.bytes[sizeof(double)] = '\0';
^
>From gcc-bugs-return-635054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 09:30:06 2019
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Subject: [Bug fortran/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Sun, 24 Feb 2019 09:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89451
janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #8 from janus at gcc dot gnu.org ---
In fact I only see the problem when configuring with --with-arch=haswell. It
goes away if I remove that flag.
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 09:35:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The problem is with the subroutine, not with the call from
the main program.
If you split the module and main program into a separate file
and compile the modlue with r264951 (a random version which works)
and the mani program with r265171, the program works.
The other way around, it segfaults.
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Subject: [Bug target/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|fortran |target
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to janus from comment #8)
> In fact I only see the problem when configuring with --with-arch=haswell. It
> goes away if I remove that flag.
Looks like a target regression then, which Fortran just happens to expose.
Moving component to TARGET.
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
And on my AMD system, it does indeed pass with r265170. OK.
Looking at the diff of the tree dumps between the two versions,
the difference is
--- a.r265170 2019-02-24 10:56:39.138713129 +0100
+++ a.r265171 2019-02-24 10:56:59.598888069 +0100
@@ -229,10 +229,7 @@
}
(struct __vtype__STAR *) this->_data->mold._vptr = (struct __vtype__STAR *)
((struct __class__STAR_t *) value)->_vptr;
this->_data->mold._len = ((struct __class__STAR_t *) value)->_len;
- if (this->_data->mold._vptr->_def_init != 0B)
- {
- (void) __builtin_memcpy (this->_data->mold._data, (void *)
this->_data->mold._vptr->_def_init, (unsigned long)
this->_data->mold._vptr->_size);
- }
+ (void) __builtin_memcpy (this->_data->mold._data, (void *)
this->_data->mold._vptr->_def_init, (unsigned long)
this->_data->mold._vptr->_size);
}
so there is a NULL pointer check missing from the code compiled with
r265171.
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This patch makes the test case work again:
===================================================================
--- trans-expr.c (Revision 265171)
+++ trans-expr.c (Arbeitskopie)
@@ -394,7 +394,11 @@
e->ref = NULL;
}
+#if 0
base_expr = gfc_copy_expr (e);
+#else
+ base_expr = gfc_expr_to_initialize (e);
+#endif
/* Restore the original tail expression. */
if (class_ref)
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Subject: [Bug c/89482] New: arm aarch32 inline assembly w constraints generate s registers instead of d
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Bug ID: 89482
Summary: arm aarch32 inline assembly w constraints generate s
registers instead of d
Product: gcc
Version: 8.2.0
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The 8.2.0 documentation at
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Machine-Constraints.html#Machine-Constraints
says:
t
VFP floating-point registers s0-s31. Used for 32 bit values.
w
VFP floating-point registers d0-d31 and the appropriate subset d0-d15 based on
command line options. Used for 64 bit values only. Not valid for Thumb1.
However, when I try to compile the following:
main.c
````
#include <assert.h>
int main(void) {
float my_float = 1.5;
__asm__ (
"vmov s0, 1.0;"
"vadd.f32 %[my_float], %[my_float], s0;"
: [my_float] "+t" (my_float)
:
: "s0"
);
assert(my_float == 2.5);
#if 1
double my_double = 1.5;
__asm__ (
"vmov.f64 d0, 1.0;"
"vadd.f64 %[my_double], %[my_double], d0;"
: [my_double] "+w" (my_double)
:
: "d0"
);
assert(my_double == 2.5);
#endif
}
````
with:
arm-linux-gnueabihf-gcc -std=c99 -ggdb3 -march=armv7-a -pedantic -Wall
-Wextra -o 'main' 'main.c'
the part in #if 1 would fail with:
selected FPU does not support instruction -- `vadd.f64 s14,s14,d0'
so it appears that the "w" constraint is actually being converted to an s
register.
Tested in Ubuntu 18.10, packaged GCC 8.2.0, mentioned at:
https://stackoverflow.com/questions/53960240/armv8-floating-point-output-inline-assembly
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #7)
> This patch makes the test case work again:
This also introduces numerous regressions, so this is not recommended
as a fix :-)
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Subject: [Bug fortran/89476] FAIL: gfortran.dg/ISO_Fortran_binding_5.f90
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Many Thanks HJ.
I find that there is a ISO_Fortran_binding.h still residing in gfortran.dg, in
my tree. Hence the successful regtesting on my side.
Sorry about that
Paul
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Subject: [Bug fortran/87566] ICE with class(*) and select
Date: Sun, 24 Feb 2019 10:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87566
--- Comment #13 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Neil Carlson from comment #12)
> The commit r265171 that fixed this issue also introduced a regression in 8.2
> and 9, and certainly the 7 branch too if it was back-ported to it. See
> PR89174 for the example, which had worked correctly for 7, 8, and 9, but
> which now segfaults on at least 8 and 9. I suppose it's too late revert that
> patch ...
Hi Neil,
As I said in comment #8, I decided that backporting was not going to work
because there were too many antecedent patches.
I just checked through the ChangeLog for 8-branch and there is no sign of
anybody else attempting the fix.
I'll take a look at 89174.
Thanks
Paul
>From gcc-bugs-return-635063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 10:52:21 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 10:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
FWITW, there is a difference when handling the MOLD expression
in gfc_find_and_cut_at_last_class_ref.
In the version that calls gfc_expr_to_initialize, we see
(gdb) call debug(base_expr)
push:this % mold (CLASS __class__STAR_a)
whereas with current trunk we see
(gdb) call debug(base_expr)
push:this % mold (DERIVED STAR)
On entry, the variable is push:this % mold (DERIVED STAR), so
the call to gfc_expre_to_initialize seems to do something about the
type...
>From gcc-bugs-return-635064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 12:31:34 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 12:31:00 -0000
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This seems to work:
Index: trans-expr.c
===================================================================
--- trans-expr.c (Revision 269161)
+++ trans-expr.c (Arbeitskopie)
@@ -352,7 +352,7 @@ gfc_vptr_size_get (tree vptr)
of refs following. */
gfc_expr *
-gfc_find_and_cut_at_last_class_ref (gfc_expr *e)
+gfc_find_and_cut_at_last_class_ref (gfc_expr *e, bool is_mold)
{
gfc_expr *base_expr;
gfc_ref *ref, *class_ref, *tail = NULL, *array_ref;
@@ -394,7 +394,10 @@ gfc_expr *
e->ref = NULL;
}
- base_expr = gfc_copy_expr (e);
+ if (is_mold)
+ base_expr = gfc_expr_to_initialize (e);
+ else
+ base_expr = gfc_copy_expr (e);
/* Restore the original tail expression. */
if (class_ref)
Index: trans-stmt.c
===================================================================
--- trans-stmt.c (Revision 269161)
+++ trans-stmt.c (Arbeitskopie)
@@ -6641,7 +6641,7 @@ gfc_trans_allocate (gfc_code * code)
/* Use class_init_assign to initialize expr. */
gfc_code *ini;
ini = gfc_get_code (EXEC_INIT_ASSIGN);
- ini->expr1 = gfc_find_and_cut_at_last_class_ref (expr);
+ ini->expr1 = gfc_find_and_cut_at_last_class_ref (expr, true);
tmp = gfc_trans_class_init_assign (ini);
gfc_free_statements (ini);
gfc_add_expr_to_block (&block, tmp);
Index: trans.h
===================================================================
--- trans.h (Revision 269161)
+++ trans.h (Arbeitskopie)
@@ -412,7 +412,7 @@ tree gfc_class_data_get (tree);
tree gfc_class_vptr_get (tree);
tree gfc_class_len_get (tree);
tree gfc_class_len_or_zero_get (tree);
-gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *);
+gfc_expr * gfc_find_and_cut_at_last_class_ref (gfc_expr *, bool is_mold =
false);
/* Get an accessor to the class' vtab's * field, when a class handle is
available. */
tree gfc_class_vtab_hash_get (tree);
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From: "walter.zwieflhofer at ineosteamuk dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89291] internal compiler error: in gfc_trans_use_stmts
Date: Sun, 24 Feb 2019 12:48:00 -0000
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--- Comment #5 from zwieflhofer <walter.zwieflhofer at ineosteamuk dot com> ---
Yes, I did provided NCAR with the URL to this bug-id but no response so far.
I did not try the 8.2 trunk - sort of assuming that NCAR will do so anyway in
due course as part of their standard release testing.
I am good with 5.5.0 unless you tell me that 8.2 will create binaries that are
likley to run faster on Intel/AMD.
>From gcc-bugs-return-635066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 13:01:27 2019
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From: "integrex at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89483] New: internal compiler error: Segmentation fault signal terminated program cc1plus with templates
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89483
Bug ID: 89483
Summary: internal compiler error: Segmentation fault signal
terminated program cc1plus with templates
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: integrex at yandex dot ru
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Created attachment 45809
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45809&action=edit
segfault-program.cpp
Description:
Segmentation fault happens while compiling segfault-program.cpp (in
attachments) with options: "g++ -ftemplate-depth=1000000 segfault-program.cpp".
Also, there is no errors while compiling non-segfault-program.cpp (in
attachments) with the same compiler options, but it takes some time:
real 2m16,186s
user 2m14,934s
sys 0m0,231s
Additional info:
* Verbose output of compiling (with -v option) in attachments (verbose-output).
* g++ version: "g++ (GCC) 8.2.1 20180831".
* Arch Linux version: "Linux Billy 4.18.16-arch1-1-ARCH #1 SMP PREEMPT Sat Oct
20 22:06:45 UTC 2018 x86_64 GNU/Linux".
* Preprosessed segfault program in attachments (preprocessed-segfault-program).
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Subject: [Bug c++/89483] internal compiler error: Segmentation fault signal terminated program cc1plus with templates
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--- Comment #1 from Daniil Sharko <integrex at yandex dot ru> ---
Created attachment 45810
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45810&action=edit
non-segfault-program.cpp
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Subject: [Bug c++/89483] internal compiler error: Segmentation fault signal terminated program cc1plus with templates
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--- Comment #2 from Daniil Sharko <integrex at yandex dot ru> ---
Created attachment 45811
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45811&action=edit
verbose-output
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Subject: [Bug c++/89483] internal compiler error: Segmentation fault signal terminated program cc1plus with templates
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--- Comment #3 from Daniil Sharko <integrex at yandex dot ru> ---
Created attachment 45812
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preprocessed-segfault-program
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 13:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/89484] New: Compiler ICE: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171 when using __attribute__((interrupt))
Date: Sun, 24 Feb 2019 14:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89484
Bug ID: 89484
Summary: Compiler ICE: internal compiler error: in
dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171
when using __attribute__((interrupt))
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hdusel@tangerine-soft.de
Target Milestone: ---
Environmant
===========
Given is a Crosscompiler GCC 8.3 (official Release)
This Crosscompiler hass been build with Xcode Clang
(Apple LLVM version 10.0.0 (clang-1000.11.45.5) Target:
x86_64-apple-darwin17.7.0)
xGCC Target architecture is "RX" (Renesas RX)
Running Host is: Mac OS X 10.11.6
Problem:
=======
If one tries to compile the code as follows:
------------ code start -------------
static void __attribute__((interrupt)) ISR_handleUartReceiveData(void)
{}
------------- code end --------------
...by using the commend line...
$> rx-none-elf-c++ ../Test.cpp -c -g
...The following ICE will happen:
during RTL pass: dwarf2
../Test.cpp: In function 'void ISR_handleUartReceiveData()':
../Test.cpp:6:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa,
at dwarf2cfi.c:1171
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Side note:
=========
I Discovered that the command line option '-g' __as_well__ the occurence of
'__attribute__((interrupt))' in the program code is vital to trigger this ICE!
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Subject: [Bug target/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Sun, 24 Feb 2019 15:21:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to janus from comment #8)
> In fact I only see the problem when configuring with --with-arch=haswell. It
> goes away if I remove that flag.
Does it fail without --with-arch=haswell if you add -march=haswell by hand?
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Subject: [Bug d/89177] unaligned memory access in libphobos
Date: Sun, 24 Feb 2019 15:34:00 -0000
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--- Comment #6 from Johannes Pfau <johannespfau at gmail dot com> ---
Patch posted here: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg01897.html
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Subject: [Bug c++/89484] Compiler ICE: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171 when using __attribute__((interrupt))
Date: Sun, 24 Feb 2019 15:36:00 -0000
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--- Comment #1 from Hans-Peter Dusel <hdusel@tangerine-soft.de> ---
Tried to verify this with a GCC 8.3 Crosscompiler (same environment as
described) but now for Target ARM.
This Crosscompiler together with the mentioned Code-snippet and command line
__does not__ cause an ICE.
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Sun, 24 Feb 2019 15:44:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sun Feb 24 15:44:18 2019
New Revision: 269175
URL: https://gcc.gnu.org/viewcvs?rev=269175&root=gcc&view=rev
Log:
PR libstdc++/89416 fix accessibility of members
PR libstdc++/89416
* include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
copy and move members public.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/alloc_traits.h
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It should be OK with Clang now.
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Sun, 24 Feb 2019 16:04:00 -0000
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--- Comment #15 from Jonny Grant <jg at jguk dot org> ---
(In reply to Segher Boessenkool from comment #11)
> (In reply to Jonny Grant from comment #9)
> > Maybe zero could be disallowed too.
>
> Yes, but maybe we need that for historical reasons.
>
> > Not sure what is best here, I'm not knowledgeable of GCC, but maybe setting
> > it to -1 if it goes above, and then never increment again if(-1 == line) ...
>
> The testcase will still ICE then... The assert is
>
> /* The spans must be ordered. */
> gcc_assert (prev->m_first_line < next->m_first_line);
Maybe it needs an update, if #line 0 is not allowed
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Sun, 24 Feb 2019 16:04:00 -0000
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--- Comment #16 from Jonny Grant <jg at jguk dot org> ---
Hello!
Checked 23 Feb trunk
g++ (Compiler-Explorer-Build) 9.0.1 20190223 (experimental)
comment 9 test case
#line 0
does not give an error
Original test case still shows negative line numbers
<source>:-737418241:2: warning: #warning second [-Wcpp]
<source>:-737418240:7: warning: line number out of range
Same for comment 5 test case
Could the "line number out of range" specify what the max line number supported
is perhaps?
>From gcc-bugs-return-635079-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 16:27:33 2019
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89291] internal compiler error: in gfc_trans_use_stmts
Date: Sun, 24 Feb 2019 16:27:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
According to the goddess google, this likely is not a gfortran issue.
Regardless, for reference:
https://github.com/wrf-model/WRF
If someone wants to try to download and build this.
>From gcc-bugs-return-635080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 16:41:39 2019
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Subject: [Bug fortran/89219] ICE with derived type I/O
Date: Sun, 24 Feb 2019 16:41:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I will try.
>From gcc-bugs-return-635081-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 17:30:59 2019
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Subject: [Bug c++/89484] Compiler ICE: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171 when using __attribute__((interrupt))
Date: Sun, 24 Feb 2019 17:30:00 -0000
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--- Comment #2 from Hans-Peter Dusel <hdusel@tangerine-soft.de> ---
thor:build hdusel$ /opt/gcc-8.3.0-rx-none-elf/bin/rx-none-elf-g++ -v
Using built-in specs.
COLLECT_GCC=/opt/gcc-8.3.0-rx-none-elf/bin/rx-none-elf-g++
COLLECT_LTO_WRAPPER=/opt/gcc-8.3.0-rx-none-elf/libexec/gcc/rx-none-elf/8.3.0/lto-wrapper
Target: rx-none-elf
Configured with: /tmp/build_cross_gcc/gcc-8.3.0_arch/gcc-8.3.0/configure
--target=rx-none-elf --prefix=/opt/gcc-8.3.0-rx-none-elf --disable-nls
--disable-shared --disable-threads --disable-libssp --enable-multilib
--enable-lto --without-headers --with-newlib --with-gnu-as --with-gnu-ld
--with-gcc --enable-languages=c,c++ --disable-werror
Thread model: single
gcc version 8.3.0 (GCC)
>From gcc-bugs-return-635082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 17:45:55 2019
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Subject: [Bug c/89485] New: Support vectorcall calling convention on windows
Date: Sun, 24 Feb 2019 17:45:00 -0000
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Bug ID: 89485
Summary: Support vectorcall calling convention on windows
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I'm very surprised that I didn't find an issue for this so sorry if this is
discussed/rejected somewhere else.
It appears that both MSVC and clang supports a vectorcall calling convention
which is very similar to the one used on linux and passes large vectors in the
corresponding vector register instead of on the stack. It'll be nice if gcc can
support that both for efficiency and for compatibility.
Ref
https://docs.microsoft.com/en-us/cpp/cpp/vectorcall?view=vs-2017
https://clang.llvm.org/docs/AttributeReference.html#id335
>From gcc-bugs-return-635083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 18:29:24 2019
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Subject: [Bug target/89271] [9 Regression] gcc.target/powerpc/vsx-simode2.c stopped working in GCC 9
Date: Sun, 24 Feb 2019 18:29:00 -0000
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--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Cool results so far!
+FAIL: gcc.target/powerpc/p9-dimode1.c scan-assembler-not \\mmtvsrd\\M
p9_plus_1:
.LFB1:
.cfi_startproc
- vspltisw 0,1
- vupklsw 0,0
+ li 9,1
+ mtvsrd 0,9
The new code is actually cheaper on p9. The test is wrong?
>From gcc-bugs-return-635084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 19:11:33 2019
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Subject: [Bug target/89451] [9 Regression] FAIL: gfortran.dg/pr79315.f90 -O (internal compiler error)
Date: Sun, 24 Feb 2019 19:11:00 -0000
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janus at gcc dot gnu.org changed:
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--- Comment #11 from janus at gcc dot gnu.org ---
(In reply to H.J. Lu from comment #10)
> Does it fail without --with-arch=haswell if you add -march=haswell by hand?
Yes, it does.
Further investigation seems to indicate that the problem is related to AVX:
Compiling the test case results in an ICE when adding -mavx or
-march=sandybridge, but not with -msse4.2 or -march=westmere.
>From gcc-bugs-return-635085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 19:25:10 2019
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Feb 24 19:23:51 2019
New Revision: 269176
URL: https://gcc.gnu.org/viewcvs?rev=269176&root=gcc&view=rev
Log:
PR rtl-optimization/89445
* simplify-rtx.c (simplify_ternary_operation): Don't use
simplify_merge_mask on operands that may trap.
* rtlanal.c (may_trap_p_1): Use FLOAT_MODE_P instead of
SCALAR_FLOAT_MODE_P checks. For integral division by zero, if
second operand is CONST_VECTOR, check if any element could be zero.
Don't expect traps for VEC_{MERGE,SELECT,CONCAT,DUPLICATE} unless
their operands can trap.
* gcc.target/i386/avx512f-pr89445.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/avx512f-pr89445.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/rtlanal.c
trunk/gcc/simplify-rtx.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635086-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 24 19:32:32 2019
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Subject: [Bug rtl-optimization/89445] [9 regression] _mm512_maskz_loadu_pd "forgets" to use the mask
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed now. Guess for the missed optimizations we should have another
PR, targeted at GCC 10.
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from janus at gcc dot gnu.org ---
In fact it looks like the problem is gone at r269173 (probably fixed by
r269127).
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sun, 24 Feb 2019 20:04:00 -0000
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--- Comment #11 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 24 20:03:28 2019
New Revision: 269177
URL: https://gcc.gnu.org/viewcvs?rev=269177&root=gcc&view=rev
Log:
2019-02-24 Harald Anlauf <anlauf@gmx.de>
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr88326.f90
trunk/gcc/testsuite/gfortran.dg/pr89266.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/arith.c
trunk/gcc/fortran/check.c
trunk/gcc/fortran/class.c
trunk/gcc/fortran/simplify.c
trunk/gcc/fortran/target-memory.c
trunk/gcc/fortran/target-memory.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88326] [7/8/9 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Sun, 24 Feb 2019 20:04:00 -0000
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--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Feb 24 20:03:28 2019
New Revision: 269177
URL: https://gcc.gnu.org/viewcvs?rev=269177&root=gcc&view=rev
Log:
2019-02-24 Harald Anlauf <anlauf@gmx.de>
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr88326.f90
trunk/gcc/testsuite/gfortran.dg/pr89266.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/arith.c
trunk/gcc/fortran/check.c
trunk/gcc/fortran/class.c
trunk/gcc/fortran/simplify.c
trunk/gcc/fortran/target-memory.c
trunk/gcc/fortran/target-memory.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/87007] [8 Regression] 10% slowdown with -march=skylake-avx512
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ro at gcc dot gnu.org
--- Comment #9 from Rainer Orth <ro at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #8)
> Fixed on trunk so far.
However the new tests FAIL for 32-bit (seen on i386-pc-solaris2.11):
+FAIL: gcc.target/i386/pr87007-1.c scan-assembler-times
vxorps[^\\n\\r]*xmm[0-9] 1
+FAIL: gcc.target/i386/pr87007-2.c scan-assembler-times
vxorps[^\\n\\r]*xmm[0-9] 1
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Subject: [Bug fortran/84779] [7/8/9 Regression] Compiling gfortran.fortran-torture/execute/entry_4.f90 with -O1 or -Os and -fdefault-integer-8 gives an ICE
Date: Sun, 24 Feb 2019 21:05:00 -0000
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
With rev. 269177 and on x86_64-pc-linux-gnu, I now see the ICE only at -O1,
but no longer at -Os.
After a frustrating debugging session, I decided to look at the
-fdump-tree-all for all options -O0 ... -O2, but didn't get any idea
what to look for. Maybe some help from a middle-end expert
would be needed.
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From: "st at quanttec dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89486] New: GCC fails to compile designated initializer use involving implicit conversion
Date: Sun, 24 Feb 2019 22:05:00 -0000
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Bug ID: 89486
Summary: GCC fails to compile designated initializer use
involving implicit conversion
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
The following code fails to compile with the current trunk version of GCC.
clang compiles the code fine.
struct P {
int a = 0;
void* b;
};
void f(P) {}
void test() {
f({.b = nullptr});
}
<source>: In function 'void test()':
<source>:9:19: error: could not convert '{nullptr}' from '<brace-enclosed
initializer list>' to 'P'
9 | f({.b = nullptr});
| ^
| |
| <brace-enclosed initializer list>
Compiler returned: 1
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From: "SztfG at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89478] missed optimization for lambda expression when variable is uninitialized when declared
Date: Sun, 24 Feb 2019 22:07:00 -0000
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--- Comment #2 from SztfG at yandex dot ru ---
(In reply to Marc Glisse from comment #1)
> I think the uninitialized variable makes the initialization not constexpr
> (and indeed gcc/clang complain if you try to declare test constexpr). Then
> we hit the well-known missed optimization that gcc is unable to convert a
> dynamic initialization into a static initialization even in the most trivial
> constant cases.
Then need to mark this bug as duplicate, but where that bug in GCC bugzilla,
which about that well-known missed optimization?
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Subject: [Bug target/81879] Bad compilation of small program if LTO is used
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-24
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed. I can confirm that the difference in resolution file is the problem:
750 6dacea834fb099d1 PREVAILING_DEF_IRONLY _ZNKSt5ctypeIcE8do_widenEc
vs.
750 1b64a3a32ab1e36a PREEMPTED_REG _ZNKSt5ctypeIcE8do_widenEc
Note that on a native x86_64-linux-gnu system, the resolution is also
PREVAILING_DEF_IRONLY with -static option.
It's also visible with:
x86_64-w64-mingw32-nm --plugin
/usr/lib64/gcc/x86_64-w64-mingw32/8.2.0/liblto_plugin.so simpler.o | grep
do_widen
00000000 T _ZNKSt5ctypeIcE8do_widenEc
while on a native linux system:
nm s2.o | grep do_widen
00000000 W _ZNKSt5ctypeIcE8do_widenEc
T == The symbol is in the text (code) section.
W == The symbol is a weak object.
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/87007] [8 Regression] 10% slowdown with -march=skylake-avx512
Date: Sun, 24 Feb 2019 22:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87007
--- Comment #10 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sun Feb 24 22:41:55 2019
New Revision: 269178
URL: https://gcc.gnu.org/viewcvs?rev=269178&root=gcc&view=rev
Log:
i386: Compile PR target/87007 tests with -mfpmath=sse
-mfpmath=sse is needed to enable SSE for FP math in 32-bit.
PR target/87007
* gcc.target/i386/pr87007-1.c: Compile with -mfpmath=sse.
* gcc.target/i386/pr87007-2.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/pr87007-1.c
trunk/gcc/testsuite/gcc.target/i386/pr87007-2.c
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Subject: [Bug fortran/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 22:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 24 22:49:47 2019
New Revision: 269179
URL: https://gcc.gnu.org/viewcvs?rev=269179&root=gcc&view=rev
Log:
2019-02-24 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89174
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): Add is_mold
to garguments. If we are dealing with a MOLD, call
gfc_expr_to_initialize().
* trans-stmt.c (gfc_trans_allocate): For MOLD, pass is_mold=true
to gfc_find_and_cut_at_last_class_ref.
* trans.h (gfc_find_and_cut_at_last_class_ref): Add optional
argument is_mold with default false.
2019-02-24 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89174
* gfortran.dg/allocate_with_mold_3.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/allocate_with_mold_3.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89174] [8 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 24 Feb 2019 22:51:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] Allocation |[8 Regression] Allocation
|segfault with CLASS(*) MOLD |segfault with CLASS(*) MOLD
--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug target/81879] Bad compilation of small program if LTO is used
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
The .res file contains just a single object, thus PREEMPTED_REG does not make
sense. Problem will be probably in binutils. I'm investigating right now..
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Subject: [Bug middle-end/31279] Uninitialized warning for call-by-reference arguments with known intent(in)
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2012-02-02 00:00:00 |2019-2-24
CC| |msebor at gcc dot gnu.org
Depends on| |83859
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
I have implemented three attributes: read_only, read_write, and write_only.
They take two arguments: one refers to the pointer function parameter and the
other to the size of the object the pointer points to. See bug 83859. Besides
warning, they can also be used for optimization. I'm hoping to submit the
feature for GCC 10.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83859
[Bug 83859] Please add new attribute which will establish relation between
parameters for buffer and its size
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Subject: [Bug c++/84585] [7/8/9 Regression] internal compiler error: in get_local_decls, at cp/name-lookup.c:3654
Date: Sun, 24 Feb 2019 23:44:00 -0000
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--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Sun Feb 24 23:44:11 2019
New Revision: 269180
URL: https://gcc.gnu.org/viewcvs?rev=269180&root=gcc&view=rev
Log:
2019-02-24 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84585
* g++.dg/cpp0x/pr84585.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr84585.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84585] [7 Regression] internal compiler error: in get_local_decls, at cp/name-lookup.c:3654
Date: Sun, 24 Feb 2019 23:46:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|vegard.nossum at gmail dot com |
Summary|[7/8/9 Regression] internal |[7 Regression] internal
|compiler error: in |compiler error: in
|get_local_decls, at |get_local_decls, at
|cp/name-lookup.c:3654 |cp/name-lookup.c:3654
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in trunk and 8.1.0.
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Subject: [Bug middle-end/36823] missing uninitialized warning (IPA, inlining)
Date: Sun, 24 Feb 2019 23:58:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2009-02-09 15:35:38 |2019-2-24
CC| |msebor at gcc dot gnu.org
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
GCC 7, 8 and 9 do warn at -O1 but not at -O2. The last version on Godbolt to
warn at -O2 was 4.1 (I don't have access to the bisection machine so I can't
tell where this problem was introduced).
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Subject: [Bug tree-optimization/40635] bogus name and location in 'may be used uninitialized' warning
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40635
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2017-03-02 00:00:00 |2019-2-24
CC| |msebor at gcc dot gnu.org
Known to fail| |8.3.0, 9.0
--- Comment #12 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.
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Subject: [Bug target/89485] Support vectorcall calling convention on windows
Date: Mon, 25 Feb 2019 00:10:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*-mingw32
Component|c |target
Severity|normal |enhancement
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89219] ICE with derived type I/O
Date: Mon, 25 Feb 2019 01:01:00 -0000
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--- Comment #4 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
After a semi-lengthy session I am seeing this just before the segfault.
(gdb) p *expr
$2 = {expr_type = EXPR_OP, ts = {type = BT_CLASS, kind = 0, u = {
derived = 0x1f24e70, cl = 0x1f24e70, pad = 32657008}, interface = 0x0,
is_c_interop = 0, is_iso_c = 0, f90_type = BT_CLASS, deferred = false,
interop_kind = 0x0}, rank = 0, shape = 0x0, symtree = 0x0, ref = 0x0,
where = {nextc = 0x1eca90c, lb = 0x1eca8c0}, base_expr = 0x0, is_boz = 0,
is_snan = 0, error = 0, user_operator = 0, mold = 0, must_finalize = 0,
no_bounds_check = 0, external_blas = 0, do_not_resolve_again = 0,
do_not_warn = 0, representation = {length = 0, string = 0x0}, value = {
logical = 27, iokind = 27, integer = {{_mp_alloc = 27, _mp_size = 0,
_mp_d = 0x0}}, real = {{_mpfr_prec = 27, _mpfr_sign = 0,
_mpfr_exp = 31821088, _mpfr_d = 0x0}}, complex = {{re = {{
_mpfr_prec = 27, _mpfr_sign = 0, _mpfr_exp = 31821088,
_mpfr_d = 0x0}}, im = {{_mpfr_prec = 0, _mpfr_sign = 0,
_mpfr_exp = 0, _mpfr_d = 0x0}}}}, op = {
op = INTRINSIC_PARENTHESES, uop = 0x0, op1 = 0x1e58d20, op2 = 0x0},
function = {actual = 0x1b, name = 0x0, isym = 0x1e58d20, esym = 0x0},
compcall = {actual = 0x1b, name = 0x0, base_object = 0x1e58d20, tbp = 0x0,
ignore_pass = 0, assign = 0}, character = {length = 27, string = 0x0},
constructor = 0x1b}, param_list = 0x0}
(gdb) frame
#0 get_dtio_proc (ts=ts@entry=0x1ee8498, code=code@entry=0x1ee8570,
dtio_sub=dtio_sub@entry=0x7fffffffcd00)
at ../../trunk/gcc/fortran/trans-io.c:2246
2246 gfc_add_vptr_component (expr);
One thing that strikes me here is we are trying to get the dtio procedure out
of I think an EXPR_OP. So I wonder if we need to try to resolve or simplify
this to get the actual class. This is new territory for me. Anyone else have
any input?
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Subject: [Bug libstdc++/89464] shared_ptr_base.h: error: '__tag' was not declared in this scope (gcc-8.3.0 regression?)
Date: Mon, 25 Feb 2019 01:59:00 -0000
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--- Comment #9 from Milhouse <gcc at nmacleod dot com> ---
Thanks Jonathan, that's all clear now. A fix has been pushed which is working
with both gcc-8.2.0 and gcc-8.3.0:
https://github.com/Silicondust/libhdhomerun/pull/19
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Subject: [Bug fortran/89174] [8 Regression] Allocation segfault with CLASS(*) MOLD
Date: Mon, 25 Feb 2019 04:06:00 -0000
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--- Comment #13 from Neil Carlson <neil.n.carlson at gmail dot com> ---
I've pinpointed were the regression was introduced on the 8 branch.
r268313 segfaults, but r268311 (the preceding change to 8) works fine.
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Subject: [Bug fortran/89174] [8 Regression] Allocation segfault with CLASS(*) MOLD
Date: Mon, 25 Feb 2019 04:10:00 -0000
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--- Comment #14 from Neil Carlson <neil.n.carlson at gmail dot com> ---
The comment for r268313 calls out a change to
gfc_find_and_cut_at_last_class_ref -- same function Thomas worked on for the
fix on the trunk.
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Subject: [Bug rtl-optimization/89487] New: [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
Date: Mon, 25 Feb 2019 05:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89487
Bug ID: 89487
Summary: [8/9 Regression] ICE in expand_expr_addr_expr_1, at
expr.c:7993
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target: x86_64-pc-linux-gnu
gcc-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling the following
snippet reduced from ocaml 4.05.0 package:
void
caml_interprete (void)
{
register int *pc asm("%r15");
register int *sp asm("%r14");
int i;
for (i = 0; i < 3; ++i)
*--sp = pc[i];
}
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190224 -O2 -ftree-loop-distribution -c
/tmp/interp.i
during RTL pass: expand
/tmp/interp.i: In function 'caml_interprete':
/tmp/interp.i:2:1: internal compiler error: in expand_expr_addr_expr_1, at
expr.c:7993
2 | caml_interprete (void)
| ^~~~~~~~~~~~~~~
0x60739b expand_expr_addr_expr_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:7993
0xa2909b expand_expr_addr_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:8106
0xa2909b expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:11261
0xa355e4 expand_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.h:279
0xa355e4 expand_operands(tree_node*, tree_node*, rtx_def*, rtx_def**,
rtx_def**, expand_modifier)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:7872
0xa3d20c expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:8732
0xa29987 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:11317
0xa35927 expand_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.h:279
0xa35927 expand_expr_addr_expr_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:7931
0xa2909b expand_expr_addr_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:8106
0xa2909b expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:11261
0xa355e4 expand_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.h:279
0xa355e4 expand_operands(tree_node*, tree_node*, rtx_def*, rtx_def**,
rtx_def**, expand_modifier)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:7872
0xa3bfaa expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:9732
0xa2bc5d expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:9942
0xa3ed51 expand_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.h:279
0xa3ed51 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:8508
0xa2bc5d expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:9942
0x984200 expand_normal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.h:285
0x984200 do_compare_and_jump
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/dojump.c:1204
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From: "arthur.j.odwyer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
Date: Mon, 25 Feb 2019 05:28:00 -0000
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--- Comment #1 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Similar cases for `unordered_{multi,}set` as well.
// https://godbolt.org/z/onYid6
#include <unordered_set>
int main() {
const int arr[] = { 1, 2, 3 };
std::unordered_set s(arr, arr+3, 42, std::hash<int>(),
std::allocator<int>());
std::unordered_set t({ 1, 2, 3 }, 42, std::allocator<int>());
}
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Subject: [Bug c++/89488] New: [9 Regression] ICE in merge_exception_specifiers, at cp/typeck2.c:2395
Date: Mon, 25 Feb 2019 06:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89488
Bug ID: 89488
Summary: [9 Regression] ICE in merge_exception_specifiers, at
cp/typeck2.c:2395
Product: gcc
Version: 9.0
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g++-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling the following
testcase:
struct zl {
struct {
int x2 = zl ();
} fx;
};
% g++-9.0.0-alpha20190224 -c vczgd7oc.cpp
vczgd7oc.cpp:3:18: error: default member initializer for 'zl::<unnamed
struct>::x2' required before the end of its enclosing class
3 | int x2 = zl ();
| ^
vczgd7oc.cpp:3:12: note: defined here
3 | int x2 = zl ();
| ^~~~~~~~
vczgd7oc.cpp:3:18: internal compiler error: in merge_exception_specifiers, at
cp/typeck2.c:2395
3 | int x2 = zl ();
| ^
0x67cfaf merge_exception_specifiers(tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/typeck2.c:2395
0x96aa69 process_subob_fn
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/method.c:1261
0x96aa69 process_subob_fn
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/method.c:1246
0x96b0a5 walk_field_subobs
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/method.c:1458
0x96b900 synthesized_method_walk
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/method.c:1724
0x96eae3 get_defaulted_eh_spec(tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/method.c:1762
0xa07186 maybe_instantiate_noexcept(tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/pt.c:24190
0x92e0da mark_used(tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/decl2.c:5392
0x893ff5 build_over_call
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/call.c:8552
0x896b1f build_new_method_call_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/call.c:9773
0x896b1f build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/call.c:9848
0x897889 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/call.c:9272
0x949ac6 build_value_init(tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/init.c:354
0xa7af92 build_functional_cast(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/typeck2.c:2274
0x997574 cp_parser_functional_cast
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:28255
0x9a9c41 cp_parser_postfix_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:7098
0x9b8bc9 cp_parser_unary_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:8469
0x991d72 cp_parser_cast_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:9355
0x99264a cp_parser_binary_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:9457
0x9937b6 cp_parser_assignment_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cp/parser.c:9754
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Subject: [Bug c++/89483] internal compiler error: Segmentation fault signal terminated program cc1plus with templates
Date: Mon, 25 Feb 2019 06:21:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>-ftemplate-depth=1000000
You get what you get when you increase this value.
And it is documented to maybe run out of stack space too:
The default value is 900, as the compiler can run out of stack space before
hitting 1024 in some situations.
>From gcc-bugs-return-635113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 06:22:34 2019
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Subject: [Bug c++/89483] internal compiler error: Segmentation fault signal terminated program cc1plus with templates
Date: Mon, 25 Feb 2019 06:22:00 -0000
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://gcc.gnu.org/onlinedocs/gcc-8.3.0/gcc/C_002b_002b-Dialect-Options.html#index-ftemplate-depth
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Mon, 25 Feb 2019 06:25:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |documentation
Target| |arm*, aarch64*
Component|c |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is a few undocumented modifies (not constraints) that need to be
documented for both ARM (aarch32) and AARCH64. There is at least another bug
about them.
NOTE x86 documents the modifies these days.
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Subject: [Bug tree-optimization/89489] New: [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
Date: Mon, 25 Feb 2019 06:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89489
Bug ID: 89489
Summary: [9 Regression] ICE in gimple_duplicate_bb, at
tree-cfg.c:6257
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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gfortran-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling
gcc/testsuite/gfortran.dg/inline_sum_5.f90 w/ -O1 -floop-parallelize-all
-ftree-parallelize-loops=2:
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190224 -O1
-floop-parallelize-all -ftree-parallelize-loops=2 -c
gcc/testsuite/gfortran.dg/inline_sum_5.f90
during GIMPLE pass: cunroll
f951: internal compiler error: in gimple_duplicate_bb, at tree-cfg.c:6257
0x64d066 gimple_duplicate_bb
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-cfg.c:6257
0x94d81e duplicate_block(basic_block_def*, edge_def*, basic_block_def*,
copy_bb_data*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfghooks.c:1085
0x94ee42 copy_bbs(basic_block_def**, unsigned int, basic_block_def**,
edge_def**, unsigned int, edge_def**, loop*, basic_block_def*, bool)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfghooks.c:1353
0x95bebc duplicate_loop_to_header_edge(loop*, edge_def*, unsigned int,
simple_bitmap_def*, edge_def*, vec<edge_def*, va_heap, vl_ptr>*, int)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfgloopmanip.c:1296
0xf00818 gimple_duplicate_loop_to_header_edge(loop*, edge_def*, unsigned int,
simple_bitmap_def*, edge_def*, vec<edge_def*, va_heap, vl_ptr>*, int)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-manip.c:921
0xee4df0 try_unroll_loop_completely
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:907
0xee4df0 canonicalize_loop_induction_variables
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1250
0xee6fc0 tree_unroll_loops_completely_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1391
0xee6f2a tree_unroll_loops_completely_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1344
0xee6f2a tree_unroll_loops_completely_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1344
0xee7223 tree_unroll_loops_completely
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1437
0xee761c execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-loop-ivcanon.c:1597
(While my target here is powerpc, the ICE is not target-specific.)
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Subject: [Bug rtl-optimization/89490] New: char array constant put in string merge section
Date: Mon, 25 Feb 2019 07:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89490
Bug ID: 89490
Summary: char array constant put in string merge section
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45813
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45813&action=edit
preprocessed source
gold flagged this from a svn r269173 build:
warning:
.../powerpc64le-linux/libstdc++-v3/src/.libs//libstdc++.a(lt1-codecvt.o): last
entry in mergeable string section
'.rodata._ZNSt12_GLOBAL__N_114write_utf8_bomIcEEbRNS_5rangeIT_Lb1EEESt12codecvt_mode.part.0.str1.8'
not null terminated
and yes, 3 bytes are put in the string merge section (flags AMS) without a NUL.
I'm not sure about the classification of this bug since I haven't done any
analysis, it may turn out to be a target problem.
cc1plus -fpreprocessed codecvt.ii -quiet -dumpbase codecvt.cc -mcpu=power9
-auxbase-strip codecvt.o -g -O2 -Wall -Wextra -Wwrite-strings -Wcast-qual
-Wabi=2 -std=gnu++11 -version -fchecking=1 -fno-implicit-templates
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=codecvt.lo -fchar8_t -fPIC -o codecvt.s
>From gcc-bugs-return-635117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 07:26:34 2019
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Subject: [Bug rtl-optimization/89490] char array constant put in string merge section
Date: Mon, 25 Feb 2019 07:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89490
--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
Reduced C testcase, compile at -O1.
static const unsigned char utf8_bom[3] = { 0xEF, 0xBB, 0xBF };
void
plonk (unsigned char *p)
{
__builtin_memcpy (p, utf8_bom, 3);
}
>From gcc-bugs-return-635118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 08:38:45 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Mon, 25 Feb 2019 08:38:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernd.edlinger at hotmail dot de
Summary|char array constant put in |[9 Regression] char array
|string merge section |constant put in string
| |merge section
--- Comment #2 from Alan Modra <amodra at gmail dot com> ---
Putting the array initialiser in a STRING_CST conflicts with
varasm.c:categorize_decl_for_section returning SECCAT_RODATA_MERGE_STR for
STRING_CST.
>From gcc-bugs-return-635119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:03:57 2019
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From: "david.bolvansky at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89491] New: Inline jump tables
Date: Mon, 25 Feb 2019 09:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89491
Bug ID: 89491
Summary: Inline jump tables
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
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Component: tree-optimization
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int square(int x) {
return x*x;
}
int add(int x) {
return x + x;
}
typedef int (*p) (int);
p arr[4] = {square, add};
int test(int x) {
int res = arr[1](x);
return res;
}
Expected:
test(int):
lea eax, [rdi+rdi]
ret
Currently:
test(int):
jmp [QWORD PTR arr[rip+8]]
------------
If the index to the jump table isn't a constant, should not be better to expand
"if else" chain like:
if (x==1) arr[1](x);
else if (x==2) arr[2](x);
..and then take an opportunity to inline functions?
>From gcc-bugs-return-635120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:04:44 2019
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Subject: [Bug c++/89486] GCC fails to compile designated initializer use involving implicit conversion
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Harald van Dijk <harald at gigawatt dot nl> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |harald at gigawatt dot nl
--- Comment #1 from Harald van Dijk <harald at gigawatt dot nl> ---
This is a duplicate of #71446. As the error message hints, {.b = nullptr} is
treated as just {nullptr} here, so it attempts to initialise a rather than b.
>From gcc-bugs-return-635121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:10:25 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89491] Inline jump tables
Date: Mon, 25 Feb 2019 09:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89491
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
arr is non-constant so GCC cannot assume it would be square or add all the
time.
>From gcc-bugs-return-635122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:29:38 2019
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Subject: [Bug c++/89481] constexpr function allows writing one active union member and reading another
Date: Mon, 25 Feb 2019 09:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89481
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC trunk starting with r269052 aka PR89336 fix will reject this too for
-std=c++14 and -std=c++17 too:
pr89481.C:20:29: in ‘constexpr’ expansion of ‘all_zeros()’
pr89481.C:10:32: error: change of the active member of a union from
‘all_zeros()::mix::numeric’ to ‘all_zeros()::mix::bytes’
10 | zero.bytes[sizeof(double)] = '\0';
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
It is accepted with -std=c++2a where changing of active member is allowed.
>From gcc-bugs-return-635123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:31:04 2019
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Subject: [Bug c++/89481] constexpr function allows writing one active union member and reading another
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45814
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45814&action=edit
gcc9-pr89481.patch
Untested fix for -std=c++2a compilation.
>From gcc-bugs-return-635124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 09:46:23 2019
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Subject: [Bug tree-optimization/89491] Inline jump tables
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--- Comment #2 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
Right, static helps.
What about more complex examples, like inlining vtables?
https://gcc.godbolt.org/z/ZXkRYa
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Subject: [Bug target/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 25 09:51:27 2019
New Revision: 269185
URL: https://gcc.gnu.org/viewcvs?rev=269185&root=gcc&view=rev
Log:
PR target/89438
* config/arm.vfp.md (*negdf2_vfp): Use
gen_int_mode (0x80000000, SImode) instead of GEN_INT (0x80000000).
* config/arm/neon.md (neon_copysignf<mode>): Likewise.
* gcc.dg/pr89438.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89438.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/neon.md
trunk/gcc/config/arm/vfp.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89438] [9 Regression] ICE in glibc/sysdeps/ieee754/dbl-64/e_pow.c (internal compiler error: in decompose, at rtl.h:2266)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-635127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 10:16:31 2019
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Mon, 25 Feb 2019 10:16:00 -0000
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ktkachov at gcc dot gnu.org changed:
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
Hmm, I can't reproduce this with trunk or GCC 8.
I think the exact GCC configuration is key here.
Can you provide the output of "arm-linux-gnueabihf-gcc -v" please?
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
Target Milestone|--- |9.0
Summary|ice in |[9 Regression] ice in
|df_reg_chain_verify_unmarke |df_reg_chain_verify_unmarke
|d, at df-scan.c:3995 |d, at df-scan.c:3995
Ever confirmed|0 |1
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Confirmed with "-O2 -mavx".
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Subject: [Bug target/89434] [7/8/9 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 25 10:32:38 2019
New Revision: 269186
URL: https://gcc.gnu.org/viewcvs?rev=269186&root=gcc&view=rev
Log:
PR target/89434
* config/arm/arm.md (*subsi3_carryin_const): Use
arm_neg_immediate_operand predicate instead of
arm_not_immediate_operand, "L" constraint instead of "K" and
print it using %n2 instead of %B2.
(*subsi3_carryin_const0): New define_insn.
(*subsi3_carryin_compare_const): Use const_int_I_operand predicate
instead of arm_not_operand and "I" constraint instead of "K" and
print it using %n3 instead of %B2. Instead of using match_dup 2 add
another match_operand and in the condition check that it is negation
of operands[2].
(*subsi3_carryin_compare_const0): New define_ins.
(*subdi_di_zesidi): Adjust to use *subsi3_carryin_const0 instead of
*subsi3_carryin_const.
(*arm_cmpdi_insn): Fix splitting into *subsi3_carryin_compare_const,
split into *subsi3_carryin_compare_const0 if the highpart is zero.
* gcc.c-torture/execute/pr89434.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr89434.c
trunk/gcc/testsuite/gcc.dg/pr89434.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libfortran/89274] Inconsistent list directed output of INTEGER(16)
Date: Mon, 25 Feb 2019 10:40:00 -0000
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--- Comment #2 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Mon Feb 25 10:39:38 2019
New Revision: 269187
URL: https://gcc.gnu.org/viewcvs?rev=269187&root=gcc&view=rev
Log:
2019-02-25 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR libfortran/89274
* gfortran.dg/list_directed_large.f90: New test.
2019-02-25 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR libfortran/89274
* io/write.c (write_integer): Add width for INTEGER(16).
Added:
trunk/gcc/testsuite/gfortran.dg/list_directed_large.f90
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/write.c
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hjl at gcc dot gnu.org,
| |hubicka at gcc dot gnu.org
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
Regression introduced by r269119:
i386: Add pass_remove_partial_avx_dependency.
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Subject: [Bug libfortran/89274] Inconsistent list directed output of INTEGER(16)
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Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Seems obvious, Ok for trunk with a ChangeLog.
>
> Another point of view would be that for list-directed we should always
> use width=0 for all kinds; that would make list-directed more useful
> for things like
>
> print *, 'Frobnicator value is ', frob, ' frobs.'
>
> but would make it less useful for outputting tables.
IIRC this has already been discussed in the past. The choice of a fixed width
has been made a long time ago and IMO it is too late to change it.
>From gcc-bugs-return-635133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 10:55:38 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
Date: Mon, 25 Feb 2019 10:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |8.4
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems tree-data-ref.c creates on this testcase (many apparently) ADDR_EXPRs of
these hard register VAR_DECLs and some of them survive until expansion, which
ICEs on them. We should never try to create ADDR_EXPR of DECL_HARD_REGISTER
VAR_Ps IMHO.
>From gcc-bugs-return-635134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:01:01 2019
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Subject: [Bug c++/89488] [9 Regression] ICE in merge_exception_specifiers, at cp/typeck2.c:2395
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
>From gcc-bugs-return-635135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:01:03 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can we ignore the DECL_HARD_REGISTER drs, or never canonicalize them to &var
(after all, they should never have any non-zero step, offset etc.), something
else?
>From gcc-bugs-return-635136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:04:56 2019
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Subject: [Bug c++/89488] [9 Regression] ICE in merge_exception_specifiers, at cp/typeck2.c:2395
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-635137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:07:52 2019
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From: "ciro.santilli at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Mon, 25 Feb 2019 11:07:00 -0000
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--- Comment #3 from Ciro Santilli <ciro.santilli at gmail dot com> ---
On Ubuntu 16.04 GCC 5.4.0 which I have access to now and fails with the same
error `arm-linux-gnueabihf-gcc -v` gives:
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/arm-linux-gnueabihf/5/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
5.4.0-6ubuntu1~16.04.9' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm
--disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-armhf-cross/jre
--enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-armhf-cross
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-armhf-cross
--with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--disable-libgcj --enable-objc-gc --enable-multiarch --enable-multilib
--disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16
--with-float=hard --with-mode=thumb --disable-werror --enable-multilib
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=arm-linux-gnueabihf --program-prefix=arm-linux-gnueabihf-
--includedir=/usr/arm-linux-gnueabihf/include
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9)
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] wrong |[7/8 Regression] wrong code
|code with -Og and |with -Og and
|__builtin_mul_overflow() |__builtin_mul_overflow()
Known to fail|9.0 |
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-635139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:14:48 2019
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Cleaned up testcase:
int a;
void foo (double);
int baz (void);
void
bar (void)
{
while (baz ())
foo (a);
}
>From gcc-bugs-return-635140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:17:14 2019
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Subject: [Bug fortran/89492] New: [9 Regression] Endless compilation of an invalid TRANSFER after r269177
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Bug ID: 89492
Summary: [9 Regression] Endless compilation of an invalid
TRANSFER after r269177
Product: gcc
Version: 9.0
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As reported at https://gcc.gnu.org/ml/fortran/2019-02/msg00198.html, after
revision r269177, compiling the reduced test
program bug4a
implicit none
type bug4
! Intentionally left empty
end type bug4
write(*,*) size(transfer(1,['']))
write(*,*) transfer(transfer([1],[bug4()]),[1],size[1])
end program bug4a
gives the error
pr34202_red.f90:8:54:
8 | write(*,*) transfer(transfer([1],[bug4()]),[1],size[1])
| 1
Error: Function 'size' requires an argument list at (1)
and enter an endless state.
If I comment the line
write(*,*) size(transfer(1,['']))
I get immediately the error
Error: Coarray designator at (1) but 'size' is not a coarray
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Mon, 25 Feb 2019 11:21:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |7.4.0, 8.3.0
Keywords| |compile-time-hog,
| |error-recovery
Last reconfirmed| |2019-02-25
Blocks| |31237
Ever confirmed|0 |1
Target Milestone|--- |9.0
Known to fail| |9.0
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31237
[Bug 31237] [meta-bug] TRANSFER intrinsic
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Subject: [Bug target/89484] ICE in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171 when using __attribute__((interrupt)) w. Debug Info
Date: Mon, 25 Feb 2019 11:53:00 -0000
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--- Comment #3 from Hans-Peter Dusel <hdusel@tangerine-soft.de> ---
This issue is not related to the c++ compiler g++. It happens also if one uses
gcc.
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Mon, 25 Feb 2019 11:55:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I admit I don't know much about df infrastructure, but it looks completely
wrong to me to first modify the various instructions to refer to at that point
created, but uninitialized v4sf_const0 pseudo, including df_insn_rescan etc.,
then df_analyze including DF_DU_CHAIN | DF_UD_CHAIN etc. and finally add an
initializer for that pseudo. I'd say df_analyze shouldn't be called if the IL
is in so inconsistent state.
>From gcc-bugs-return-635144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 11:57:44 2019
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Subject: [Bug target/89484] ICE in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1171 when using __attribute__((interrupt)) w. Debug Info
Date: Mon, 25 Feb 2019 11:57:00 -0000
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--- Comment #4 from Hans-Peter Dusel <hdusel@tangerine-soft.de> ---
The Release 8.2.0 of GCC is also affected by this issue.
Here is a snapshot (same test program as mentioned above)
- begin ----------------------------------------------
alvis:tmp hdusel$ /opt/gcc-8.2.0-rx-none-elf/bin/rx-none-elf-gcc ./test.cpp -c
-g
during RTL pass: dwarf2
./test.cpp: In function 'void ISR_handleUartReceiveData()':
./test.cpp:2:2: internal compiler error: in dwarf2out_frame_debug_adjust_cfa,
at dwarf2cfi.c:1171
{}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
- end -----------------------------------------------
Here are the specs:
- begin ----------------------------------------------
alvis:tmp hdusel$ /opt/gcc-8.2.0-rx-none-elf/bin/rx-none-elf-gcc -v
Using built-in specs.
COLLECT_GCC=/opt/gcc-8.2.0-rx-none-elf/bin/rx-none-elf-gcc
COLLECT_LTO_WRAPPER=/opt/gcc-8.2.0-rx-none-elf/libexec/gcc/rx-none-elf/8.2.0/lto-wrapper
Target: rx-none-elf
Configured with: /tmp/build_cross_gcc/gcc-8.2.0_arch/gcc-8.2.0/configure
--target=rx-none-elf --prefix=/opt/gcc-8.2.0-rx-none-elf --disable-nls
--disable-shared --disable-threads --disable-libssp -v --without-headers
--with-newlib --with-gnu-as --with-gnu-ld --with-gcc --enable-languages=c,c++
Thread model: single
gcc version 8.2.0 (GCC)
- end -----------------------------------------------
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Mon, 25 Feb 2019 12:00:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And another issue is the insertion of the v4sf_const0 initializer outside of
bbs.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r264850.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #4 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
funny, how I managed to overlook this...
--- varasm.c.orig 2019-01-25 17:57:32.000000000 +0100
+++ varasm.c 2019-02-25 13:13:55.652051780 +0100
@@ -7634,6 +7634,8 @@
/* Output the objects themselves. */
offset = 0;
+ bool merge_strings = (block->sect->common.flags & SECTION_MERGE)
+ && (block->sect->common.flags & SECTION_STRINGS);
FOR_EACH_VEC_ELT (*block->objects, i, symbol)
{
/* Move to the object's offset, padding with zeros if necessary. */
@@ -7652,7 +7654,7 @@
HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
assemble_constant_contents (DECL_INITIAL (decl), XSTR (symbol, 0),
- DECL_ALIGN (decl), false);
+ DECL_ALIGN (decl), merge_strings);
size = get_constant_size (DECL_INITIAL (decl));
offset += size;
@@ -7669,7 +7671,8 @@
{
HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
- assemble_variable_contents (decl, XSTR (symbol, 0), false, false);
+ assemble_variable_contents (decl, XSTR (symbol, 0), false,
+ merge_strings);
size = tree_to_uhwi (DECL_SIZE_UNIT (decl));
offset += size;
if ((flag_sanitize & SANITIZE_ADDRESS)
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For the former issue, I'd go with:
--- gcc/config/i386/i386.c.jj 2019-02-22 23:02:47.805117610 +0100
+++ gcc/config/i386/i386.c 2019-02-25 12:57:18.238284322 +0100
@@ -2835,7 +2835,14 @@ remove_partial_avx_dependency (void)
continue;
if (!v4sf_const0)
- v4sf_const0 = gen_reg_rtx (V4SFmode);
+ {
+ calculate_dominance_info (CDI_DOMINATORS);
+ df_set_flags (DF_DEFER_INSN_RESCAN);
+ df_chain_add_problem (DF_DU_CHAIN | DF_UD_CHAIN);
+ df_md_add_problem ();
+ df_analyze ();
+ v4sf_const0 = gen_reg_rtx (V4SFmode);
+ }
/* Convert PARTIAL_XMM_UPDATE_TRUE insns, DF -> SF, SF -> DF,
SI -> SF, SI -> DF, DI -> SF, DI -> DF, to vec_dup and
@@ -2883,12 +2890,6 @@ remove_partial_avx_dependency (void)
if (v4sf_const0)
{
- calculate_dominance_info (CDI_DOMINATORS);
- df_set_flags (DF_DEFER_INSN_RESCAN);
- df_chain_add_problem (DF_DU_CHAIN | DF_UD_CHAIN);
- df_md_add_problem ();
- df_analyze ();
-
/* (Re-)discover loops so that bb->loop_father can be used in the
analysis below. */
loop_optimizer_init (AVOID_CFG_MODIFICATIONS);
>From gcc-bugs-return-635149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 12:38:19 2019
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Subject: [Bug tree-optimization/89491] Inline jump tables
Date: Mon, 25 Feb 2019 12:38:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Dávid Bolvanský from comment #2)
> Right, static helps.
>
> What about more complex examples, like inlining vtables?
> https://gcc.godbolt.org/z/ZXkRYa
Your example is much more complex. The vtable might be constant but where the
vtable is stored is not.
>From gcc-bugs-return-635150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:10:02 2019
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Subject: [Bug target/83443] FAIL: gcc.dg/tree-ssa/builtin-sprintf-warn-18.c (test for warnings, line 119)
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from John David Anglin <danglin at gcc dot gnu.org> ---
Test is now fixed.
>From gcc-bugs-return-635151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:20:40 2019
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Subject: [Bug target/81879] Bad compilation of small program if LTO is used
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=24267
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #5)
> The .res file contains just a single object, thus PREEMPTED_REG does not
> make sense. Problem will be probably in binutils. I'm investigating right
> now..
So no. PREEMPTED_REG is correct and culprit is probably linker:
https://sourceware.org/bugzilla/show_bug.cgi?id=24267
>From gcc-bugs-return-635152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:22:40 2019
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Martin Liška <marxin at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:26:05 2019
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45815
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45815&action=edit
gcc9-pr89474.patch
Untested full fix.
>From gcc-bugs-return-635154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:38:24 2019
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
> Please no. -fstrict-enums currently makes the compiler *more* strictly
> conforming, by following the rules of the standard. Your suggestion arguably
> makes it *less* conforming, by deciding that valid values should emit a
> warning.
>
> What you want is not how enums work in C++. Please don't abuse
> -fstrict-enums when what you want is "some other kind of enum, not one that
> strictly follows the C++ standard".
I don't insist on that, I'm fully aware that it's a hackish approach.
My motivation is chromium package which we build with gcc in openSUSE.
In order to handle all
warning: control reaches end of non-void function [-Wreturn-type]
in switch statements, we have a huge patch:
https://build.opensuse.org/package/view_file/network:chromium/chromium-beta/chromium-non-void-return.patch?expand=1
Clang is more tolerant to c++ enums:
$ cat wreturn.cpp
enum A
{
a,
b,
c
};
int foo(int argc)
{
switch ((A)argc)
case a:
case b:
case c:
return 0;
}
int main(int argc, char **argv)
{
return foo(argc);
}
$ clang++ -Wall wreturn.cpp
[no output]
>From gcc-bugs-return-635155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:38:57 2019
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Subject: [Bug tree-optimization/89491] Inline jump tables
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
"Inlining" from vtables is called devirtualization, and GCC performs that
either if there is just a single possibility, or with PGO if a particular
method is known to be very common. Doing it in other cases is probably not a
very good idea.
>From gcc-bugs-return-635156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:39:27 2019
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Subject: [Bug ada/89349] segfault when building GCC 7 & 8 branch with GCC master
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--- Comment #17 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #16)
> .
Thank you Erik for the fix!
>From gcc-bugs-return-635157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:41:38 2019
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug gcov-profile/89465] [GCOV] Wrong coverage with setjmp and longjmp function
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in r263111.
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Subject: [Bug gcov-profile/89469] [GCOV] wrong frequencies for the first statement in the for(;;) block
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-635160-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:52:25 2019
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Subject: [Bug gcov-profile/89470] [GCOV] wrong frequencies when if statement is executed after a complicated "?:"statement
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-02-25
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, it's a folding of a constant expression.
>From gcc-bugs-return-635161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 13:53:15 2019
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Subject: [Bug gcov-profile/89468] [GCOV] wrong frequencies when the block is empty in a if statement
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, again a folding of sub-expressions.
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Subject: [Bug gcov-profile/89467] [GCOV] wrong freqencies when there is comparison operator in the right side of the assignment statement after a label statement
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk.
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From: "pavel at zhukoff dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89493] New: Stack smashing on armv7hl
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89493
Bug ID: 89493
Summary: Stack smashing on armv7hl
Product: gcc
Version: 9.0
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Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45816
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45816&action=edit
reproducer
Reporting this for ada as reproducer is part of gprbuild (gprinstall) code.
In some cases (return from exception handler) stack pointer is set to weird
value and either stack smashing protection or storage error occurs.
it's easy and 100% reproducible in Fedora linux distribution
https://bugzilla.redhat.com/show_bug.cgi?id=1677173
gcc-9.0.1-0.4.fc30.armv7hl
gprbuild-2018-12.fc30.armv7hl
All other architectures (x86, s390x, ppc64le and aarch64 work fine)
We were able to strip reproducer to ~200 LOC (attached)
# gprbuild -v -cargs:Ada -O2 -g
# valgrind ./exe/process
==29563== Memcheck, a memory error detector
==29563== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==29563== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==29563== Command: ./exe/process
==29563==
warning: file does not exist '/tmp/a/satrace.log'
==29563== Warning: client switching stacks? SP change: 0xbdef07c0 --> 0x68818
==29563== to suppress, use: --max-stackframe=1108836440 or greater
aaa
==29563== Invalid write of size 4
==29563== at 0x40C04: system__secondary_stack__ss_release (in
/tmp/test/exe/process)
==29563== Address 0x68754 is 12 bytes inside data symbol
"ada_main__sec_default_sized_stacks"
==29563==
==29563== Invalid read of size 4
==29563== at 0x1A09C: _ada_process (process.adb:119)
==29563== Address 0x687ec is 164 bytes inside data symbol
"ada_main__sec_default_sized_stacks"
==29563==
==29563== Invalid read of size 4
==29563== at 0x1A0A4: _ada_process (process.adb:119)
==29563== Address 0xe1a02026 is not stack'd, malloc'd or (recently) free'd
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
Date: Mon, 25 Feb 2019 14:12:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
CC| |marxin at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Known to work| |8.2.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, a Graphite issue.
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And due to graphite I can't bisect, Martin, can you?
>From gcc-bugs-return-635166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:21:20 2019
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From: "pkubaj at anongoth dot pl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89494] New: Bootstrap error when using GCC 4.2.1
Date: Mon, 25 Feb 2019 14:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89494
Bug ID: 89494
Summary: Bootstrap error when using GCC 4.2.1
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: pkubaj at anongoth dot pl
Target Milestone: ---
I use FreeBSD on powerpc64 architecture, which has GCC 4.2.1 as a system
compiler.
It does support C++98 which, according to
https://gcc.gnu.org/install/prerequisites.html is enough to bootstrap GCC.
I can compile GCC 6.5 at most. GCC 7 and newer are broken. FreeBSD ports tree
has a work around for that to use newer GCC release from FreeBSD's ports, but
it means that to compile GCC 7 or newer, we need to compile 5 or 6.
Building GCC 9 fails with:
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.build/./gcc/xgcc
-B/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.build/./gcc/ -xc
-nostdinc /dev/null -S -o /dev/null
-fself-test=/usr/local/poudriere/ports/default/lang/g
cc9-devel/work/gcc-9-20190217/gcc/testsuite/selftests
cc1: internal compiler error: Segmentation fault
no stack trace because unwind library not available
Building GCC 7 is more verbose:
/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/xgcc
-B/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/
-B/usr/local/powerpc64-portbld-freebsd12.0/bin/
-B/usr/local/powerpc64-portbld-freebsd12.0/lib/ -isystem
/usr/local/powerpc64-portbld-freebsd12.0/include -isystem
/usr/local/powerpc64-portbld-freebsd12.0/sys-include -g -O2 -pipe
-DLIBICONV_PLUG -fno-strict-aliasing -m32 -fPIC -mstrict-align -O2 -g -O2
-pipe -DLIBICONV_PLUG -fno-strict-aliasing -DIN_GCC -W -Wall
-Wwrite-strings -Wcast-qual -Wno-format -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC
-pthread -mno-minimal-toc -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -fPIC -pthread -mno-minimal-toc -I. -I. -I../../.././gcc
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/.
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/../gcc
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/../include
-DHAVE_CC_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3
-c /usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.c
-fvisibility=hidden -DHIDE_EXPORTS
In file included from
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.c:56:0:
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.c:
In function '__muldi3':
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.h:219:20:
internal compiler error: Segmentation fault
#define __NDW(a,b) __ ## a ## di ## b
^
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.h:273:18:
note: in expansion of macro '__NDW'
#define __muldi3 __NDW(mul,3)
^~~~~
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libgcc/libgcc2.c:548:1:
note: in expansion of macro '__muldi3'
__muldi3 (DWtype u, DWtype v)
^~~~~~~~
no stack trace because unwind library not available
Obviously, I'm not asking to fix GCC 4.2.1, but to make a workaround for newer
releases
>From gcc-bugs-return-635167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:24:00 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89495] New: gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
Date: Mon, 25 Feb 2019 14:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89495
Bug ID: 89495
Summary: gcc/c-family/c-format.c:1272:20: runtime error: signed
integer overflow: 214748365 * 10 cannot be represented
in type 'int'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
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It's a recent UBSAN error:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/builtin-printf-warn-2.c
-O -Wformat -Wformat-overflow=2 -ftrack-macro-expansion=0 -W
../../gcc/c-family/c-format.c:1272:15: runtime error: signed integer overflow:
2147483640 + 8 cannot be represented in type 'int'
#0 0xaeca84 in maybe_read_dollar_number ../../gcc/c-family/c-format.c:1272
#1 0xaf28a1 in argument_parser::read_any_dollar()
../../gcc/c-family/c-format.c:2082
#2 0xafd7c6 in check_format_info_main ../../gcc/c-family/c-format.c:2855
#3 0xaf0b77 in check_format_arg ../../gcc/c-family/c-format.c:1748
#4 0xab18f6 in check_function_arguments_recurse(void (*)(void*, tree_node*,
unsigned long), void*, tree_node*, unsigned long)
../../gcc/c-family/c-common.c:5895
#5 0xab1380 in check_function_arguments_recurse(void (*)(void*, tree_node*,
unsigned long), void*, tree_node*, unsigned long)
../../gcc/c-family/c-common.c:5827
#6 0xaedc92 in check_format_info ../../gcc/c-family/c-format.c:1471
#7 0xaebc46 in check_function_format(tree_node const*, tree_node*, int,
tree_node**, vec<unsigned int, va_heap, vl_ptr>*)
../../gcc/c-family/c-format.c:1128
#8 0xab1020 in check_function_arguments(unsigned int, tree_node const*,
tree_node const*, int, tree_node**, vec<unsigned int, va_heap, vl_ptr>*)
../../gcc/c-family/c-common.c:5802
#9 0x92d079 in build_function_call_vec(unsigned int, vec<unsigned int,
va_heap, vl_ptr>, tree_node*, vec<tree_node*, va_gc, vl_embed>*,
vec<tree_node*, va_gc, vl_embed>*) ../../gcc/c/c-typeck.c:3118
#10 0x92dfdc in c_build_function_call_vec(unsigned int, vec<unsigned int,
va_heap, vl_ptr>, tree_node*, vec<tree_node*, va_gc, vl_embed>*,
vec<tree_node*, va_gc, vl_embed>*) ../../gcc/c/c-typeck.c:3184
#11 0x9db6b7 in c_parser_postfix_expression_after_primary
../../gcc/c/c-parser.c:9595
#12 0x9d9511 in c_parser_postfix_expression ../../gcc/c/c-parser.c:9270
#13 0x9cc738 in c_parser_unary_expression ../../gcc/c/c-parser.c:7383
#14 0x9cb0b0 in c_parser_cast_expression ../../gcc/c/c-parser.c:7222
#15 0x9c58c7 in c_parser_binary_expression ../../gcc/c/c-parser.c:7025
#16 0x9c4a15 in c_parser_conditional_expression ../../gcc/c/c-parser.c:6759
#17 0x9c4518 in c_parser_expr_no_commas ../../gcc/c/c-parser.c:6676
#18 0x9dc1c6 in c_parser_expression ../../gcc/c/c-parser.c:9731
#19 0x9dc6db in c_parser_expression_conv ../../gcc/c/c-parser.c:9764
#20 0x9c0147 in c_parser_statement_after_labels ../../gcc/c/c-parser.c:5610
#21 0x9be83e in c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:5148
#22 0x9bdf55 in c_parser_compound_statement ../../gcc/c/c-parser.c:4982
#23 0x9b437c in c_parser_declaration_or_fndef ../../gcc/c/c-parser.c:2354
#24 0x9b12a7 in c_parser_external_declaration ../../gcc/c/c-parser.c:1653
#25 0x9b0aa4 in c_parser_translation_unit ../../gcc/c/c-parser.c:1534
#26 0xa16edb in c_parse_file() ../../gcc/c/c-parser.c:19854
#27 0xb39675 in c_common_parse_file() ../../gcc/c-family/c-opts.c:1155
#28 0x1ffdeae in compile_file ../../gcc/toplev.c:456
#29 0x2005afb in do_compile ../../gcc/toplev.c:2204
#30 0x2006129 in toplev::main(int, char**) ../../gcc/toplev.c:2339
#31 0x436822f in main ../../gcc/main.c:39
#32 0x7ffff6e7bb7a in __libc_start_main ../csu/libc-start.c:308
#33 0x857579 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/cc1+0x857579)
../../gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow:
214748365 * 10 cannot be represented in type 'int'
#0 0xaeca29 in maybe_read_dollar_number ../../gcc/c-family/c-format.c:1272
#1 0xaf28a1 in argument_parser::read_any_dollar()
../../gcc/c-family/c-format.c:2082
#2 0xafd7c6 in check_format_info_main ../../gcc/c-family/c-format.c:2855
#3 0xaf0b77 in check_format_arg ../../gcc/c-family/c-format.c:1748
#4 0xab18f6 in check_function_arguments_recurse(void (*)(void*, tree_node*,
unsigned long), void*, tree_node*, unsigned long)
../../gcc/c-family/c-common.c:5895
#5 0xab1380 in check_function_arguments_recurse(void (*)(void*, tree_node*,
unsigned long), void*, tree_node*, unsigned long)
../../gcc/c-family/c-common.c:5827
#6 0xaedc92 in check_format_info ../../gcc/c-family/c-format.c:1471
#7 0xaebc46 in check_function_format(tree_node const*, tree_node*, int,
tree_node**, vec<unsigned int, va_heap, vl_ptr>*)
../../gcc/c-family/c-format.c:1128
#8 0xab1020 in check_function_arguments(unsigned int, tree_node const*,
tree_node const*, int, tree_node**, vec<unsigned int, va_heap, vl_ptr>*)
../../gcc/c-family/c-common.c:5802
#9 0x92d079 in build_function_call_vec(unsigned int, vec<unsigned int,
va_heap, vl_ptr>, tree_node*, vec<tree_node*, va_gc, vl_embed>*,
vec<tree_node*, va_gc, vl_embed>*) ../../gcc/c/c-typeck.c:3118
#10 0x92dfdc in c_build_function_call_vec(unsigned int, vec<unsigned int,
va_heap, vl_ptr>, tree_node*, vec<tree_node*, va_gc, vl_embed>*,
vec<tree_node*, va_gc, vl_embed>*) ../../gcc/c/c-typeck.c:3184
#11 0x9db6b7 in c_parser_postfix_expression_after_primary
../../gcc/c/c-parser.c:9595
#12 0x9d9511 in c_parser_postfix_expression ../../gcc/c/c-parser.c:9270
#13 0x9cc738 in c_parser_unary_expression ../../gcc/c/c-parser.c:7383
#14 0x9cb0b0 in c_parser_cast_expression ../../gcc/c/c-parser.c:7222
#15 0x9c58c7 in c_parser_binary_expression ../../gcc/c/c-parser.c:7025
#16 0x9c4a15 in c_parser_conditional_expression ../../gcc/c/c-parser.c:6759
#17 0x9c4518 in c_parser_expr_no_commas ../../gcc/c/c-parser.c:6676
#18 0x9dc1c6 in c_parser_expression ../../gcc/c/c-parser.c:9731
#19 0x9dc6db in c_parser_expression_conv ../../gcc/c/c-parser.c:9764
#20 0x9c0147 in c_parser_statement_after_labels ../../gcc/c/c-parser.c:5610
#21 0x9be83e in c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:5148
#22 0x9bdf55 in c_parser_compound_statement ../../gcc/c/c-parser.c:4982
#23 0x9b437c in c_parser_declaration_or_fndef ../../gcc/c/c-parser.c:2354
#24 0x9b12a7 in c_parser_external_declaration ../../gcc/c/c-parser.c:1653
#25 0x9b0aa4 in c_parser_translation_unit ../../gcc/c/c-parser.c:1534
#26 0xa16edb in c_parse_file() ../../gcc/c/c-parser.c:19854
#27 0xb39675 in c_common_parse_file() ../../gcc/c-family/c-opts.c:1155
#28 0x1ffdeae in compile_file ../../gcc/toplev.c:456
#29 0x2005afb in do_compile ../../gcc/toplev.c:2204
#30 0x2006129 in toplev::main(int, char**) ../../gcc/toplev.c:2339
#31 0x436822f in main ../../gcc/main.c:39
#32 0x7ffff6e7bb7a in __libc_start_main ../csu/libc-start.c:308
#33 0x857579 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/cc1+0x857579)
>From gcc-bugs-return-635168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:25:09 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89495] gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
Date: Mon, 25 Feb 2019 14:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89495
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Known to work| |8.2.0
Version|unknown |9.0
Target Milestone|--- |9.0
Known to fail| |9.0
>From gcc-bugs-return-635169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:27:12 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89496] New: [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
Date: Mon, 25 Feb 2019 14:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89496
Bug ID: 89496
Summary: [9 Regression] gcc/fortran/trans-types.c:3015:9:
runtime error: member access within null pointer of
type 'struct gfc_formal_arglist'
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
A recent regression:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/altreturn_1.f90
../../gcc/fortran/trans-types.c:3015:9: runtime error: member access within
null pointer of type 'struct gfc_formal_arglist'
#0 0xeb78e3 in get_formal_from_actual_arglist
../../gcc/fortran/trans-types.c:3015
#1 0xeb82d5 in gfc_get_function_type(gfc_symbol*, gfc_actual_arglist*)
../../gcc/fortran/trans-types.c:3081
#2 0xd0d1de in gfc_get_extern_function_decl(gfc_symbol*,
gfc_actual_arglist*) ../../gcc/fortran/trans-decl.c:2152
#3 0xd6e804 in conv_function_val ../../gcc/fortran/trans-expr.c:3920
#4 0xd8fa14 in gfc_conv_procedure_call(gfc_se*, gfc_symbol*,
gfc_actual_arglist*, gfc_expr*, vec<tree_node*, va_gc, vl_embed>*)
../../gcc/fortran/trans-expr.c:6626
#5 0xe65236 in gfc_trans_call(gfc_code*, bool, tree_node*, tree_node*,
bool) ../../gcc/fortran/trans-stmt.c:406
#6 0xc7680b in trans_code ../../gcc/fortran/trans.c:1890
#7 0xc76efa in gfc_trans_code(gfc_code*) ../../gcc/fortran/trans.c:2149
#8 0xd3dfce in gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6568
#9 0xc76f85 in gfc_generate_code(gfc_namespace*)
../../gcc/fortran/trans.c:2166
#10 0xad0181 in translate_all_program_units ../../gcc/fortran/parse.c:6134
#11 0xad0d8e in gfc_parse_file() ../../gcc/fortran/parse.c:6337
#12 0xc379c6 in gfc_be_parse_file ../../gcc/fortran/f95-lang.c:204
#13 0x2307a40 in compile_file ../../gcc/toplev.c:456
#14 0x230f68d in do_compile ../../gcc/toplev.c:2204
#15 0x230fcbb in toplev::main(int, char**) ../../gcc/toplev.c:2339
#16 0x469a7c8 in main ../../gcc/main.c:39
#17 0x7ffff6e7bb7a in __libc_start_main ../csu/libc-start.c:308
#18 0x86dbe9 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/f951+0x86dbe9)
>From gcc-bugs-return-635171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:27:50 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Mon, 25 Feb 2019 14:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |redi at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, before C++2a it is an extension, so outside of the C++ standard, and GCC
has been implementing it as not allowing to skip any fields.
In C++2a it is actually a standard language feature, so I guess it needs to
participate in the overload resolution.
>From gcc-bugs-return-635170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:27:27 2019
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
Date: Mon, 25 Feb 2019 14:27:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-25
Known to work| |8.2.0
Blocks| |63426
Target Milestone|--- |9.0
Ever confirmed|0 |1
Known to fail| |9.0
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426
[Bug 63426] [meta-bug] Issues found with -fsanitize=undefined
>From gcc-bugs-return-635172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 14:38:58 2019
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P4
CC| |tkoenig at gcc dot gnu.org
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Likely due to r268992 (the ICE occurs in the added block).
The PR requires an instrumented compiler.
>From gcc-bugs-return-635173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:01:56 2019
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Subject: [Bug c++/89285] [8/9 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 25 15:01:01 2019
New Revision: 269188
URL: https://gcc.gnu.org/viewcvs?rev=269188&root=gcc&view=rev
Log:
PR c++/89285
* g++.dg/cpp1y/constexpr-89285-2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89285-2.C
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:06:48 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Mon, 25 Feb 2019 15:06:00 -0000
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--- Comment #4 from Roman Perepelitsa <roman.perepelitsa at gmail dot com> ---
Please take a look at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71446#c1.
This code compiles. Given that it contains `{.value = 0}`, one would reasonably
expect that it creates an instance of a struct with the data member `value` set
to zero. However, it doesn't. The literal `{.value = 0}` creates an instance of
type `std::initialize_list<int>`. This is very misleading. The code should
either not compile or do what was intended (which is also what C++20 requires
and what clang does).
>From gcc-bugs-return-635175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:07:02 2019
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Subject: [Bug c++/89285] [8 Regression] ICE after casting the this pointer in the constructor in C++17 mode
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] ICE after |[8 Regression] ICE after
|casting the this pointer in |casting the this pointer in
|the constructor in C++17 |the constructor in C++17
|mode |mode
Known to fail| |8.3.0
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, #c16 comment is incorrect, that was the case of the earlier approach
(#c4) but not of what has been actually committed.
Keeping this open for 8.x, though the patch is unlikely to be backportable.
>From gcc-bugs-return-635176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:13:10 2019
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Subject: [Bug c++/89481] constexpr function allows writing one active union member and reading another
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--- Comment #3 from Michael Veksler <mickey.veksler at gmail dot com> ---
Thanks for looking into it.
With the fix, does it behave the same way for:
- runtime evaluation of all_zeros()
- compile time evaluation such as std::integral_constant<bool,
all_zeros()>::value;
Currently (trunk 20190223 (experimental) with -std=c++2a), it returns different
results for both cases, which does not feel right.
>From gcc-bugs-return-635178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:16:01 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amker at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r249994.
>From gcc-bugs-return-635177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:16:00 2019
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Subject: [Bug rtl-optimization/86096] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 0)
Date: Mon, 25 Feb 2019 15:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86096
--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Feb 25 15:14:39 2019
New Revision: 269189
URL: https://gcc.gnu.org/viewcvs?rev=269189&root=gcc&view=rev
Log:
df-scan: fix use of mw_order in df_mw_compare (PR 86096)
PR rtl-optimization/86096
* df-scan.c (df_mw_compare): Do not check mw_reg fields when
comparing mw_order values.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/df-scan.c
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Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 25 Feb 2019 15:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89282
--- Comment #6 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Mon Feb 25 15:19:45 2019
New Revision: 269190
URL: https://gcc.gnu.org/viewcvs?rev=269190&root=gcc&view=rev
Log:
2019-02-25 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/89282
* gfortran.dg/overload_3.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/overload_3.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89282] Garbage arithmetics results in fortran with -O3 and overloaded operators
Date: Mon, 25 Feb 2019 15:22:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> It stopped failing with r240291, but because it just added early VRP,
> it just went latent. With -O3 -fno-tree-vrp it was miscompiled until
> r240303 aka PR77648 fix. That fix has been backported to 6.3 and 5.5.
Closing.
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Subject: [Bug c++/89495] [9 Regression] gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
Date: Mon, 25 Feb 2019 15:30:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Looks like a regression only because the test is new.
I see the same code in there e.g. in GCC 3.2.
That said, I think we can do something like:
2019-02-25 Jakub Jelinek <jakub@redhat.com>
PR c++/89495
* c-format.c (maybe_read_dollar_number): Compute nargnum in
HOST_WIDE_INT type to avoid overflows and change overflow_flag
checking.
--- gcc/c-family/c-format.c.jj 2019-01-16 09:35:04.565323073 +0100
+++ gcc/c-family/c-format.c 2019-02-25 16:26:07.872810237 +0100
@@ -1268,9 +1268,9 @@ maybe_read_dollar_number (const char **f
overflow_flag = 0;
while (ISDIGIT (*fcp))
{
- int nargnum;
- nargnum = 10 * argnum + (*fcp - '0');
- if (nargnum < 0 || nargnum / 10 != argnum)
+ HOST_WIDE_INT nargnum
+ = HOST_WIDE_INT_UC (10) * argnum + (*fcp - '0');
+ if ((int) nargnum != nargnum)
overflow_flag = 1;
argnum = nargnum;
fcp++;
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Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Mon, 25 Feb 2019 15:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug fortran/71935] [7/8/9 Regression] ICE is_c_interoperable(): gfc_simplify_expr failed
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I've read the discussion, but I am not clear about
> what the problem actually is.
>
> Is this something that we can close now?
The same for me. Let close this PR. If a related problem appears in a real
code, please file a new PR.
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Subject: [Bug c++/88256] [7/8/9 Regression] ICE: Segmentation fault (in make_ssa_name_fn), C++ FE missing DECL_EXPRs
Date: Mon, 25 Feb 2019 15:40:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89439 has been marked as a duplicate of this bug. ***
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Subject: [Bug c++/89439] [7/8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:268
Date: Mon, 25 Feb 2019 15:40:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So dup of PR88256.
*** This bug has been marked as a duplicate of bug 88256 ***
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Subject: [Bug fortran/71412] [F03] iso_c_bindings and optimization interaction bug
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Indeed I think that is a duplicate of pr71544.
So let mark this PR as a duplicate.
*** This bug has been marked as a duplicate of bug 71544 ***
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Subject: [Bug fortran/71544] gfortran compiler optimization bug when dealing with c-style pointers
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |relliott at umn dot edu
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 71412 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 15:51:12 2019
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Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
Date: Mon, 25 Feb 2019 15:51:00 -0000
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
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--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Fixed on trunk (aka gcc-9). Not a regression, so no backport.
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Subject: [Bug c++/89480] internal compiler error: in unify, at cp/pt.c:22160 with the template argument force conversio
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
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Bug 68241 depends on bug 70149, which changed state.
Bug 70149 Summary: [F08] Character pointer initialization causes ICE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70149
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Subject: [Bug fortran/31392] [meta-bug] gfortran problems with initialization
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Bug 31392 depends on bug 70149, which changed state.
Bug 70149 Summary: [F08] Character pointer initialization causes ICE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70149
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>From gcc-bugs-return-635190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:02:27 2019
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Subject: [Bug fortran/70149] [F08] Character pointer initialization causes ICE
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Any answer to this question?
No feedback, closing. Please open a new PR for any related issue.
>From gcc-bugs-return-635193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:09:50 2019
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This PR is almost ten year old. Any point to let it rot anymore?
No answer: WONTFIX.
>From gcc-bugs-return-635194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:20:11 2019
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Subject: [Bug target/86019] [8/9 Regression] Unref implementation using atomic_thread_fence generates worse code on x86-64 in gcc 8.1 than 7.3
Date: Mon, 25 Feb 2019 16:20:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This used to be handled by peephole2, but that can't do anything with multiple
basic blocks and
(insn 12 11 13 3 (set (mem/v:BLK (scratch:DI) [0 A8])
(unspec:BLK [
(mem/v:BLK (scratch:DI) [0 A8])
] UNSPEC_MEMORY_BLOCKAGE))
"/usr/src/gcc-7/obj/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/atomic_base.h":102:26
688 {*memory_blockag
e}
(nil))
emitted in there. And generic code doesn't know anything about the memory
blockage instruction that it would e.g. be able to move it from the conditional
to unconditional if it was the only thing (say let ifcvt pass do it?).
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|RESOLVED |NEW
CC| |tkoenig at gcc dot gnu.org
Resolution|WONTFIX |---
Severity|normal |enhancement
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Sorry, I missed that one.
This is definitely an area where improvement would be quite helpful -
our performance there is abysmal.
Dominique, I'm all for closing bugs :-) but I think one or two
of them should stay. Just because nobody has found time, inclination
or knowledge to work on them does not mean nobody should.
>From gcc-bugs-return-635196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:43:44 2019
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Subject: [Bug c/77754] [7/8/9 Regression] internal compiler error : tree code 'call_expr' is not supported in LTO streams
Date: Mon, 25 Feb 2019 16:43:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45817
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45817&action=edit
gcc9-pr77754.patch
Seems all the ICEs went away with r266271 aka PR87229 fix. I'll test these
tests for the testsuite.
>From gcc-bugs-return-635197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:49:09 2019
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
Date: Mon, 25 Feb 2019 16:49:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This is definitely an area where improvement would be quite helpful -
> our performance there is abysmal.
Compiling the test on my laptop takes less than 3s!
>From gcc-bugs-return-635198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 16:55:09 2019
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
Date: Mon, 25 Feb 2019 16:55:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, I'm not convinced the #c0 transformation should be done by default, but
what should and can be done is instead of emitting {42, 42, 42, ...., 42}; emit
like the C or C++ FEs emit {[1..1000000] = 42} which is much more compile time
memory friendly, and if the user doesn't require that it is SAVEd, e.g. the
gimplifier has code to decide if having a .rodata initializer vs. initializing
by a loop is beneficial. See PR82294 or PR87436 for the C++ counterparts.
I see a single spot with RANGE_EXPR even in the Fortran FE, so maybe it does it
already.
>From gcc-bugs-return-635199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 17:16:15 2019
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45818
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45818&action=edit
gcc9-pr43210.patch
Like this (untested so far).
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Subject: [Bug target/88530] [8/9 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
Date: Mon, 25 Feb 2019 17:57:00 -0000
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--- Comment #3 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Mon Feb 25 17:57:01 2019
New Revision: 269193
URL: https://gcc.gnu.org/viewcvs?rev=269193&root=gcc&view=rev
Log:
AArch64: Fix command line options canonicalization version #2. (PR
target/88530)
Commandline options on AArch64 don't get canonicalized into the smallest
possible set before output to the assembler. This means that overlapping
feature
sets are emitted with superfluous parts.
Normally this isn't an issue, but in the case of crypto we have retro-actively
split it into aes and sha2. We need to emit only +crypto to the assembler
so old assemblers continue to work.
Because of how -mcpu=native and -march=native work they end up enabling all
feature bits. Instead we need to get the smallest possible set, which would
also
fix the problem with older the assemblers and the retro-active split.
The function that handles this is called quite often. It is called for any
push/pop options or attribute that changes arch, cpu etc. In order to not make
this search for the smallest set too expensive we sort the options based on the
number of features (bits) they enable. This allows us to process the list
linearly instead of quadratically (Once we have enabled a feature, we know that
anything else that enables it can be ignored. By sorting we'll get the biggest
groups first and thus the smallest combination of commandline flags).
The Option handling structures have been extended to have a boolean to indicate
whether the option is synthetic, with that I mean if the option flag itself
enables a new feature.
e.g. +crypto isn't an actual feature, it just enables other features, but
others
like +rdma enable multiple dependent features but is itself also a feature.
There are two ways to solve this.
1) Either have the options that are feature bits also turn themselves on, e.g.
change rdma to turn on FP, SIMD and RDMA as dependency bits.
2) Make a distinction between these two different type of features and have the
framework handle it correctly.
Even though it's more code I went for the second approach, as it's the one
that'll be less fragile (people can't forget it) and gives the least surprises.
Effectively this patch changes the following:
The values before the => are the old compiler and after the => the new code.
-march=armv8.2-a+crypto+sha2 => -march=armv8.2-a+crypto
-march=armv8.2-a+sha2+aes => -march=armv8.2-a+crypto
The remaining behaviors stay the same.
gcc/ChangeLog:
PR target/88530
* common/config/aarch64/aarch64-common.c
(struct aarch64_option_extension): Add is_synthetic.
(all_extensions): Use it.
(TARGET_OPTION_INIT_STRUCT): Define hook.
(struct gcc_targetm_common): Moved to end.
(all_extensions_by_on): New.
(opt_ext_cmp, typedef opt_ext): New.
(aarch64_option_init_struct): New.
(aarch64_contains_opt): New.
(aarch64_get_extension_string_for_isa_flags): Output smallest set.
* config/aarch64/aarch64-option-extensions.def
(AARCH64_OPT_EXTENSION): Explicitly include AES and SHA2 in crypto.
(fp, simd, crc, lse, fp16, rcpc, rdma, dotprod, aes, sha2, sha3,
sm4, fp16fml, sve, profile, rng, memtag, sb, ssbs, predres):
Set is_synthetic to false.
(crypto): Set is_synthetic to true.
* config/aarch64/driver-aarch64.c (AARCH64_OPT_EXTENSION): Add
SYNTHETIC.
gcc/testsuite/ChangeLog:
PR target/88530
* gcc.target/aarch64/options_set_1.c: New test.
* gcc.target/aarch64/options_set_2.c: New test.
* gcc.target/aarch64/options_set_3.c: New test.
* gcc.target/aarch64/options_set_4.c: New test.
* gcc.target/aarch64/options_set_5.c: New test.
* gcc.target/aarch64/options_set_6.c: New test.
* gcc.target/aarch64/options_set_7.c: New test.
* gcc.target/aarch64/options_set_8.c: New test.
* gcc.target/aarch64/options_set_9.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/aarch64/options_set_1.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_2.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_3.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_4.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_5.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_6.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_7.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_8.c
trunk/gcc/testsuite/gcc.target/aarch64/options_set_9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/common/config/aarch64/aarch64-common.c
trunk/gcc/config/aarch64/aarch64-option-extensions.def
trunk/gcc/config/aarch64/driver-aarch64.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 18:20:02 2019
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From: "a.drobyshev at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Mon, 25 Feb 2019 18:20:00 -0000
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--- Comment #18 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
(In reply to Martin Liška from comment #16)
> Created attachment 45797 [details]
> Patch candidate
>
> Patch candidate where I made some refactoring and come up with tests.
> Works fine on x86_64, on ppc64le there are some issues with
> -fsection-anchors, but that would be possible to resolve.
>
> Please let me know if you're fine with that and we can submit that to
> gcc-patches ML?
Looks good to me. By not setting TREE_PUBLIC flag we give our dummy globals
internal linkage (as if they were static), thus allowing linker to mix multiple
TUs with these dummies.
However, this way number of dummy globals in the resulting executable is
proportional to the number of TUs, and each of them occupies additional 64b for
redzone (due to alignment) + its poisoned metadata (struct __asan_global, also
64b on x86_64). I guess that's what was meant by "wasting more memory" in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1. I'm not sure, are we ok
with such a waste?
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #19 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
(In reply to Martin Liška from comment #17)
> > 2. What should we do with sections like .data.rel.ro, .data.rel.ro.local?
> > They suffer from this bug too, but it's not that easy to put globals there,
> > as you must set various attributes onto decl to ensure it will receive the
> > right reloc value.
>
> Answer for this would be that we probably can't do that with approach #2 (as
> defined in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1). Btw. how
> can one hit an invalid memory in .data.rel.ro (or .data.rel.ro.local)?
Take a look:
$ cat data_rel_ro.c
extern int a;
int * const b = &a;
int *foo(void)
{
int **ptr = &b;
ptr--;
return *ptr;
}
$ cat main.c
int a = -1;
int *c;
extern int *foo(void);
int main(int argc, char *argv[])
{
c = foo();
return 0;
}
Now compile this thing with -fPIE (assuming we want ASLR):
$ gcc -fsanitize=address -fPIE data_rel_ro.c main.c
...and b is put to .data.rel.ro:
$ objdump -t a.out
a.out: file format elf64-x86-64
SYMBOL TABLE:
....
0000000000601040 g O .data.rel.ro 0000000000000008 b
....
foo() hits invalid memory to the left of b, but our patched ASan doesn't detect
(as expected though):
$ ./a.out
$
However, there's still a redzone to the right, as it should be:
$ cat data_rel_ro.c
extern int a;
int * const b = &a;
int *foo(void)
{
int **ptr = &b;
ptr++;
return *ptr;
}
$ ./a.out
==32200==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000000601048 at pc 0x0000004007d8 bp 0x7ffee53dc6a0 sp 0x7ffee53dc680
READ of size 8 at 0x000000601048 thread T0
#0 0x4007d7 in foo /home/src/gcc/obj/data_rel_ro.c:8
#1 0x40082c in main /home/src/gcc/obj/main.c:8
#2 0x7f80ea98682f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#3 0x4006b8 in _start (/home/src/gcc/obj/a.out+0x4006b8)
0x000000601048 is located 0 bytes to the right of global variable 'b' defined
in 'data_rel_ro.c:2:13' (0x601040) of size 8
SUMMARY: AddressSanitizer: global-buffer-overflow
/home/src/gcc/obj/data_rel_ro.c:8 in foo
Shadow bytes around the buggy address:
0x0000800b81b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b81c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b81d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b81e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b81f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0000800b8200: 00 00 00 00 00 00 00 00 00[f9]f9 f9 f9 f9 f9 f9
0x0000800b8210: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8220: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8230: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8240: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0000800b8250: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
So I guess we still have to detect relocations. I cannot see limitations coming
particularly from approach #2 from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1. We just need to pass the
right reloc value to categorize_decl_for_section().
>From gcc-bugs-return-635203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 18:39:58 2019
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Subject: [Bug c++/70644] Warn about implicit conversion of 'this' to pointer to virtual base class during construction
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70644
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #0)
> (Reduced from PR 58822)
>
> struct Base { Base(int) { } };
>
> int foo(Base*) { return 0; }
>
> struct X : virtual Base {
> X() : Base(foo(this)) { }
> };
>
> int main() {
> X x;
> }
>
> The implicit conversion in the call foo(this) is undefined behaviour. It
> violates [basic.life] 3.8p6 (6.3) by converting the object's address to a
> pointer to virtual base before it is constructed.
>
> There is no warning, and no ubsan error.
>
> If the implicit conversion happens in a different scope, not inside the
> constructor, then we get a ubsan error (and segfault):
>
> struct Base { Base(int) { } };
>
> struct X;
> int foo(X*);
>
> struct X : virtual Base {
> X() : Base(foo(this)) { }
> };
>
> int foo(X* x) { Base* b = x; return 0; }
>
> int main() {
> X x;
> }
>
> vb.cc:10:27: runtime error: cast to virtual base of address 0x7ffd25ef32f0
> which does not point to an object of type 'X'
> 0x7ffd25ef32f0: note: object has invalid vptr
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90 0a 40 00
> 00 00 00 00 80 65 20 63
> ^~~~~~~~~~~~~~~~~~~~~~~
> invalid vptr
> Segmentation fault (core dumped)
>
>
> Since the original example is also UB it would be good to either get a
> diagnostic from the front end at the point of the implicit conversion, or at
> least get a ubsan error..
idea for a name for the proposed new warning?
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
Date: Mon, 25 Feb 2019 18:42:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
>From gcc-bugs-return-635205-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 19:29:02 2019
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From: "darkkirb at darkkirb dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89497] New: [8.2 regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Mon, 25 Feb 2019 19:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89497
Bug ID: 89497
Summary: [8.2 regression] ICE caused by Segmentation Fault when
compiling cups 2.2.10 with LTO flags enabled
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: darkkirb at darkkirb dot de
CC: marxin at gcc dot gnu.org
Target Milestone: ---
I have found a Regression in 8.3 involving cups 2.2.10 and LTO on Gentoo Linux
(x86_64). The package built fine with the C/LDFLAGS found below on 8.2, making
me believe it was recently introduced.
I have not yet tested this out on any recent development version.
Steps to reproduce:
1. Have the following variables set and exported:
a) CFLAGS="-march=native -O3 -fgraphite-identity -floop-nest-optimize
-fipa-pta -fno-semantic-interposition -flto=8 -fuse-linker-plugin -pipe
-falign-functions=32 -fPIC"
b) CXXFLAGS="${CFLAGS}"
c) LDFLAGS="${CFLAGS} -Wl,--hash-style=gnu"
2. untar the cups 2.2.10 release tarball and go into its directory
3. CC=gcc CXX=g++ ./configure
4. make -j$(nproc) libs
The compiler will report an ICE:
during GIMPLE pass: vrp
ppd-localize.c: In function ‘ppdLocalize’:
ppd-localize.c:51:1: internal compiler error: Segmentation fault
ppdLocalize(ppd_file_t *ppd) /* I - PPD file */
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.gentoo.org/> for instructions.
You can see the full link command below.
Thanks for making GCC better every day.
GCC Version: 8.3.0 (Gentoo 8.3.0 p1.0)
Target: x86_64-pc-linux-gnu
Configure flags: --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/8.3.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 8.3.0 p1.0' --disable-esp --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--enable-vtable-verify --enable-lto --with-isl --disable-isl-version-check
--enable-default-pie --enable-default-ssp
Full offending command line:
x86_64-pc-linux-gnu-gcc -m32 -L../cgi-bin -L../cups -L../filter -L../ppdc
-L../scheduler -march=native -O3 -fgraphite-identity -floop-nest-optimize
-fipa-pta -fno-semantic-interposition -flto=8 -fuse-linker-plugin -pipe
-falign-functions=32 -fPIC -Wl,--hash-style=gnu -fPIE -pie -Wall
-Wno-format-y2k -Wunused -Wno-unused-result -Wsign-conversion -fPIC -Os -g
-fstack-protector -Wno-format-truncation -Wno-tautological-compare
-D_GNU_SOURCE -L../cups -march=native -O3 -fgraphite-identity
-floop-nest-optimize -fipa-pta -fno-semantic-interposition -flto=8
-fuse-linker-plugin -pipe -falign-functions=32 -fPIC -Wl,--hash-style=gnu
-Wl,-soname,`basename libcups.so.2` -shared -Wall -Wno-format-y2k -Wunused
-Wno-unused-result -Wsign-conversion -fPIC -Os -g -fstack-protector
-Wno-format-truncation -Wno-tautological-compare -D_GNU_SOURCE -o libcups.so.2
adminutil.o array.o auth.o backchannel.o backend.o debug.o dest.o dest-job.o
dest-localization.o dest-options.o dir.o encode.o file.o getdevices.o
getifaddrs.o getputfile.o globals.o hash.o http.o http-addr.o http-addrlist.o
http-support.o ipp.o ipp-support.o langprintf.o language.o md5.o md5passwd.o
notify.o options.o ppd.o ppd-attr.o ppd-cache.o ppd-conflicts.o ppd-custom.o
ppd-emit.o ppd-localize.o ppd-mark.o ppd-page.o ppd-util.o pwg-media.o
request.o sidechannel.o snmp.o snprintf.o string.o tempfile.o thread.o tls.o
transcode.o usersys.o util.o \
-lgnutls -lpthread -lm -lcrypt -lz -lz
LDFLAGS="-march=native -O3 -fgraphite-identity -floop-nest-optimize -fipa-pta
-fno-semantic-interposition -flto=8 -fuse-linker-plugin -pipe
-falign-functions=32 -fPIC -Wl,--hash-style=gnu"
The libraries named by the previous command line are not in an inconsistent
state (= they are all shared libraries or static LTO 7.1 libraries)
Error output of that command:
during GIMPLE pass: vrp
ppd-localize.c: In function ‘ppdLocalize’:
ppd-localize.c:51:1: internal compiler error: Segmentation fault
ppdLocalize(ppd_file_t *ppd) /* I - PPD file */
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.gentoo.org/> for instructions.
>From gcc-bugs-return-635206-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 19:31:37 2019
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From: "darkkirb at darkkirb dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89497] [8.2 regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Mon, 25 Feb 2019 19:31:00 -0000
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--- Comment #1 from darkkirb at darkkirb dot de ---
(In reply to darkkirb from comment #0)
> Full offending command line:
> x86_64-pc-linux-gnu-gcc -m32 -L../cgi-bin -L../cups -L../filter -L../ppdc
> [...]
This happens for both 32 bit and 64 bit compilation, portage just built the 32
bit variant first (independent from -m32 flag)
>From gcc-bugs-return-635207-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 19:36:42 2019
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From: "pc at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89339] sse-movmskb-1.c fails for PPC Big Endian
Date: Mon, 25 Feb 2019 19:36:00 -0000
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--- Comment #2 from pc at gcc dot gnu.org ---
Author: pc
Date: Mon Feb 25 19:36:05 2019
New Revision: 269195
URL: https://gcc.gnu.org/viewcvs?rev=269195&root=gcc&view=rev
Log:
[rs6000] PR89338, PR89339: Fix compat vector intrinsics for BE and 32-bit
Test FAILS: sse2-cvtpd2dq-1, sse2-cvtpd2ps, sse2-cvttpd2dq on powerpc64
(big-endian).
_mm_cvtpd_epi32, _mm_cvtpd_ps, _mm_cvttpd_epi32: Type conversion from
vector doubleword type to vector word type leaves the results in even
lanes in big endian mode.
Test FAILS: sse-cvtss2si-1, sse-cvtss2si-2, sse-movmskb-1 on powerpc
(32-bit big-endian).
Incorrect type for interpreting the result from mfvsrd instruction leads
to incorrect results. Also, mfvsrd instruction only works as expected in
64-bit mode or for 32-bit quantities in 32-bit mode. A more general,
if slower, solution is needed for 32-bit mode.
2019-02-25 Paul A. Clarke <pc@us.ibm.com>
[gcc]
* config/rs6000/emmintrin.h (_mm_cvtpd_epi32): Fix big endian.
(_mm_cvtpd_ps): Likewise.
(_mm_cvttpd_epi32): Likewise.
PR target/89338
* config/rs6000/xmmintrin.h (_mm_cvtss_f32): Fix type mismatch.
(_mm_cvt_ss2si): Fix type mismatch and 32-bit.
PR target/89339
* config/rs6000/xmmintrin.h (_mm_movemask_pi8): Fix 32-bit.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/emmintrin.h
trunk/gcc/config/rs6000/xmmintrin.h
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Subject: [Bug target/89338] sse-cvtss2si-[12].c fails on PPC Big Endian
Date: Mon, 25 Feb 2019 19:36:00 -0000
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--- Comment #2 from pc at gcc dot gnu.org ---
Author: pc
Date: Mon Feb 25 19:36:05 2019
New Revision: 269195
URL: https://gcc.gnu.org/viewcvs?rev=269195&root=gcc&view=rev
Log:
[rs6000] PR89338, PR89339: Fix compat vector intrinsics for BE and 32-bit
Test FAILS: sse2-cvtpd2dq-1, sse2-cvtpd2ps, sse2-cvttpd2dq on powerpc64
(big-endian).
_mm_cvtpd_epi32, _mm_cvtpd_ps, _mm_cvttpd_epi32: Type conversion from
vector doubleword type to vector word type leaves the results in even
lanes in big endian mode.
Test FAILS: sse-cvtss2si-1, sse-cvtss2si-2, sse-movmskb-1 on powerpc
(32-bit big-endian).
Incorrect type for interpreting the result from mfvsrd instruction leads
to incorrect results. Also, mfvsrd instruction only works as expected in
64-bit mode or for 32-bit quantities in 32-bit mode. A more general,
if slower, solution is needed for 32-bit mode.
2019-02-25 Paul A. Clarke <pc@us.ibm.com>
[gcc]
* config/rs6000/emmintrin.h (_mm_cvtpd_epi32): Fix big endian.
(_mm_cvtpd_ps): Likewise.
(_mm_cvttpd_epi32): Likewise.
PR target/89338
* config/rs6000/xmmintrin.h (_mm_cvtss_f32): Fix type mismatch.
(_mm_cvt_ss2si): Fix type mismatch and 32-bit.
PR target/89339
* config/rs6000/xmmintrin.h (_mm_movemask_pi8): Fix 32-bit.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/emmintrin.h
trunk/gcc/config/rs6000/xmmintrin.h
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Subject: [Bug target/89338] sse-cvtss2si-[12].c fails on PPC Big Endian
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What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #3 from pc at gcc dot gnu.org ---
fixes committed
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Subject: [Bug target/89339] sse-movmskb-1.c fails for PPC Big Endian
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pc at gcc dot gnu.org changed:
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--- Comment #3 from pc at gcc dot gnu.org ---
fixes committed
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Subject: [Bug c++/67650] undef reference with -fdevirtualize
Date: Mon, 25 Feb 2019 19:42:00 -0000
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--- Comment #33 from Vincent <vincent.lextrait at gmail dot com> ---
Still in gcc 8.3.0.
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Subject: [Bug c/89498] New: [8/9 Regression] ICE in AT_loc_list, at dwarf2out.c:4871
Date: Mon, 25 Feb 2019 19:44:00 -0000
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Bug ID: 89498
Summary: [8/9 Regression] ICE in AT_loc_list, at
dwarf2out.c:4871
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Affects several testsuite cases at -O1+.
Changed between 20181111 and 20181118 :
$ cat pr71078-2.c
#include <math.h>
float f1(float x)
{
float t1 = fabsf (x);
float t2 = t1 / x;
return t2;
}
$ gcc-9-20181111 -c pr71078-2.c -O2 -gdwarf-5 -gsplit-dwarf
$
$ gcc-9-20190224 -c pr71078-2.c -O0 -gdwarf-5 -gsplit-dwarf
$
$ gcc-9-20190224 -c pr71078-2.c -O2 -gdwarf-5 -gsplit-dwarf
pr71078-2.c:8:1: internal compiler error: in AT_loc_list, at dwarf2out.c:4871
8 | }
| ^
0x755b87 AT_loc_list
../../gcc/dwarf2out.c:4871
0x76c693 AT_loc_list
../../gcc/dwarf2out.c:9874
0x76c693 value_format
../../gcc/dwarf2out.c:9735
0x76c84c build_abbrev_table
../../gcc/dwarf2out.c:9094
0x76c9d8 build_abbrev_table
../../gcc/dwarf2out.c:9117
0x76c9d8 build_abbrev_table
../../gcc/dwarf2out.c:9117
0x77060f output_comp_unit
../../gcc/dwarf2out.c:11034
0x797441 dwarf2out_finish
../../gcc/dwarf2out.c:31569
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Mon, 25 Feb 2019 19:44:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
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CC| |anlauf at gmx dot de
--- Comment #1 from Harald Anlauf <anlauf at gmx dot de> ---
Potential patch:
Index: gcc/fortran/check.c
===================================================================
--- gcc/fortran/check.c (revision 269177)
+++ gcc/fortran/check.c (working copy)
@@ -5487,6 +5487,13 @@
if (!gfc_element_size (mold, &result_elt_size))
return false;
+ if (result_elt_size == 0 && *source_size > 0)
+ {
+ gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L "
+ "has storage size 0", &mold->where);
+ return false;
+ }
+
if ((result_elt_size > 0 && (mold->expr_type == EXPR_ARRAY || mold->rank))
|| size)
{
Can you please verify that your testcases work?
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Subject: [Bug c/89499] New: [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Mon, 25 Feb 2019 19:48:00 -0000
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Started with gcc-6 at -O[23] :
$ cat z1.c
#pragma acc routine vector
void Vector (int *ptr, int n, const int inc)
{
#pragma acc loop vector
for (int i = 0; i < n; i++)
ptr[i] += inc;
return;
}
void foo (void)
{
const int m = 16;
int ary[m][m];
Vector (&ary[0][0], m*m, (1 << 24) - (1 << 16));
return;
}
$ gcc-9-20190224 -c z1.c -fopenacc -O0
$ gcc-9-20190224 -c z1.c -fopenacc -O1
$
$ gcc-9-20190224 -c z1.c -fopenacc -O2
during RTL pass: expand
z1.c: In function 'foo':
z1.c:4:11: internal compiler error: in expand_UNIQUE, at internal-fn.c:2605
4 | #pragma acc loop vector
| ^~~
0x8a133f expand_UNIQUE
../../gcc/internal-fn.c:2605
0x6d3a57 expand_call_stmt
../../gcc/cfgexpand.c:2633
0x6d3a57 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3691
0x6d3a57 expand_gimple_stmt
../../gcc/cfgexpand.c:3850
0x6d5a57 expand_gimple_basic_block
../../gcc/cfgexpand.c:5886
0x6db096 execute
../../gcc/cfgexpand.c:6509
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Subject: [Bug c/89500] New: [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
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have ssa_name in get_len, at tree.h:5653
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Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Started with gcc-9 at -O[23] :
$ cat z1.c
extern __SIZE_TYPE__ strlen (const char*);
extern __SIZE_TYPE__ strnlen (const char*, __SIZE_TYPE__);
void foo (int *a)
{
char c[0];
a[0] = strlen (c);
a[0] = strnlen (c, 0);
}
$ gcc-9-20190224 -c z1.c -O1
$
$ gcc-9-20190224 -c z1.c -O2
during GIMPLE pass: strlen
z1.c: In function 'foo':
z1.c:3:6: internal compiler error: tree check: expected integer_cst, have
ssa_name in get_len, at tree.h:5653
3 | void foo (int *a)
| ^~~
0x5cf414 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/tree.c:9848
0xc517a7 tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/tree.h:3432
0xc517a7 wi::extended_tree<192>::get_len() const
../../gcc/tree.h:5653
0xc517a7 wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/wide-int.h:964
0xc517a7 wide_int_ref_storage<true,
false>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/wide-int.h:1013
0xc517a7 generic_wide_int<wide_int_ref_storage<true, false>
>::generic_wide_int<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/wide-int.h:788
0xc517a7 bool wi::lts_p<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/wide-int.h:1880
0xe1a9ae wi::binary_traits<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >,
wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type,
wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::precision_type>::signed_predicate_result operator<
<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/wide-int.h:3227
0xe1a9ae tree_int_cst_lt(tree_node const*, tree_node const*)
../../gcc/tree.h:5809
0xe1a9ae handle_builtin_strlen
../../gcc/tree-ssa-strlen.c:1305
0xe1cf63 strlen_check_and_optimize_stmt
../../gcc/tree-ssa-strlen.c:3574
0xe1cf63 strlen_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-strlen.c:3927
0x1483d67 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:353
0xe16c97 execute
../../gcc/tree-ssa-strlen.c:4007
>From gcc-bugs-return-635216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 19:54:34 2019
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Mon, 25 Feb 2019 19:54:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Can you please verify that your testcases work?
With the patch I get
pr34202_red.f90:8:54:
8 | write(*,*) transfer(transfer([1],[bug4()]),[1],size[1])
| 1
Error: Function 'size' requires an argument list at (1)
pr34202_red.f90:7:30:
7 | write(*,*) size(transfer(1,['']))
| 1
Error: 'MOLD' argument of 'TRANSFER' intrinsic at (1) has storage size 0
Full test in progress. Thanks for the quick answer.
>From gcc-bugs-return-635217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:05:26 2019
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From: "harald at gigawatt dot nl" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Mon, 25 Feb 2019 20:05:00 -0000
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--- Comment #5 from Harald van Dijk <harald at gigawatt dot nl> ---
(In reply to Jakub Jelinek from comment #3)
> Well, before C++2a it is an extension, so outside of the C++ standard, and
> GCC has been implementing it as not allowing to skip any fields.
Not exactly. Outside of overload resolution, GCC does implement it as allowing
skipping of fields. Test case:
struct S {
int a, b;
bool equals(S other) const { return a == other.a && b == other.b; }
} s = {.a = 0, .b = 1};
int main() { return !s.equals({.b = 1}); }
This program should and does return 0, showing that {.b = 1} initialises the
second field, not the first.
>From gcc-bugs-return-635218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:22:02 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Mon, 25 Feb 2019 20:22:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.7 through 7.x emit:
sorry, unimplemented: non-trivial designated initializers not supported
here (and 4.6 and earlier didn't support C++11 enough to grok it).
That said, you're right, the skipping is implemented regardless of the -std=
mode, though you get -pedantic warnings if you do before -std=c++2a:
warning: C++ designated initializers only available with -std=c++2a or
-std=gnu++2a
>From gcc-bugs-return-635219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:35:42 2019
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
Date: Mon, 25 Feb 2019 20:35:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r262114. Looking into this.
Slightly adjusted testcase, no need for c[0] nor storing strnlen into the same
element as strlen:
typedef __SIZE_TYPE__ size_t;
extern size_t strlen (const char *);
extern size_t strnlen (const char *, size_t);
void
foo (int *a)
{
char c[4];
a[0] = strlen (c);
a[1] = strnlen (c, 0);
}
>From gcc-bugs-return-635220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:36:13 2019
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Mon, 25 Feb 2019 20:36:00 -0000
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--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
I found another issue for uses of transfer('',['']), so here's an updated
version with a clearer error message:
Index: gcc/fortran/check.c
===================================================================
--- gcc/fortran/check.c (revision 269177)
+++ gcc/fortran/check.c (working copy)
@@ -5487,6 +5487,26 @@
if (!gfc_element_size (mold, &result_elt_size))
return false;
+ if (result_elt_size == 0 && *source_size > 0)
+ {
+ gfc_error ("%<MOLD%> argument of %<TRANSFER%> intrinsic at %L "
+ "shall not have storage size 0 when %<SOURCE%> "
+ "argument has size greater than 0", &mold->where);
+ return false;
+ }
+
+ /* If MOLD is a scalar and SIZE is absent, the result is a scalar.
+ * If MOLD is an array and SIZE is absent, the result is an array and of
+ * rank one. Its size is as small as possible such that its physical
+ * representation is not shorter than that of SOURCE.
+ */
+ if (result_elt_size == 0 && *source_size == 0 && !size)
+ {
+ *result_size = 0;
+ *result_length_p = 0;
+ return true;
+ }
+
if ((result_elt_size > 0 && (mold->expr_type == EXPR_ARRAY || mold->rank))
|| size)
{
Suggested testcase:
! { dg-do compile }
!
! PR fortran/89492 - Endless compilation of an invalid TRANSFER after r269177
! Test error recovery for invalid uses of TRANSFER
! Test proper simplification for MOLD with size 0
!
! Derived from original testcase by Dominique d'Humieres
program bug4a
implicit none
type bug4
! Intentionally left empty
end type bug4
integer, parameter :: k = size(transfer('',[''])) ! k = 0
integer, parameter :: m(k) = k
print *, transfer(1,['']) ! { dg-error "shall not have
storage size 0" }
print *, size(transfer(1,[''])) ! { dg-error "shall not have
storage size 0" }
print *, size(transfer([1],[bug4()])) ! { dg-error "shall not have
storage size 0" }
print *, transfer(transfer([1],[bug4()]),[1]) ! { dg-error "shall not have
storage size 0" }
end program bug4a
>From gcc-bugs-return-635221-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:39:35 2019
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
Date: Mon, 25 Feb 2019 20:39:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Even better testcase without any UB in it:
typedef __SIZE_TYPE__ size_t;
extern size_t strlen (const char *);
extern size_t strnlen (const char *, size_t);
extern void bar (char *);
void
foo (int *a)
{
char c[64];
bar (c);
a[0] = strlen (c);
a[1] = strnlen (c, 0);
}
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Subject: [Bug debug/89498] [8/9 Regression] ICE in AT_loc_list, at dwarf2out.c:4871
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89498
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |debug
Target Milestone|--- |8.4
>From gcc-bugs-return-635223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:49:22 2019
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Mon, 25 Feb 2019 20:49:00 -0000
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--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
The patch should probably work, and a powerpc cross fixes the test case.
At least bootstrap and reg-test on x86_64-pc-linux-gnu is fine,
but that proves not too much.
When I look at the merge-all-constants-2.c test case, I think
the mergeable string secrtion looks bogus (unrelated to this):
$ cat merge-all-constants-2.c
/* { dg-do compile } */
/* { dg-require-effective-target string_merging } */
/* { dg-options "-w -O2 -fmerge-all-constants" } */
const char str1[36] = "0123456789abcdefghijklmnopqrstuvwxyz";
const char str2[37] = "0123456789abcdefghijklmnopqrstuvwxyz";
const char str3[10] = "0123456789abcdefghijklmnopqrstuvwxyz";
/* { dg-final { scan-assembler-not "\\.rodata\[\n\r\]" } } */
$ powerpc64-unknown-linux-gcc -O2 -S merge-all-constants-2.c
merge-all-constants-2.c:7:23: warning: initializer-string for array of chars is
too long
7 | const char str3[10] = "0123456789abcdefghijklmnopqrstuvwxyz";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$ cat merge-all-constants-2.s
.file "merge-all-constants-2.c"
.machine power4
.section ".text"
.globl str3
.globl str2
.globl str1
.section .rodata.str1.8,"aMS",@progbits,1
.align 3
.type str3, @object
.size str3, 10
str3:
.string "0123456789"
.zero 6
.type str2, @object
.size str2, 37
str2:
.string "0123456789abcdefghijklmnopqrstuvwxyz"
.zero 3
.type str1, @object
.size str1, 36
str1:
.string "0123456789abcdefghijklmnopqrstuvwxyz"
.ident "GCC: (GNU) 9.0.1 20190222 (experimental)"
Adding zero bytes after each string constant makes no sense IMHO,
since the linker will merge the constants, and so aligning the
constants with .zero does probably not work, but the should be
benign, except for that the alignment of the string constants.
>From gcc-bugs-return-635224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 20:51:03 2019
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Mon, 25 Feb 2019 20:51:00 -0000
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--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #7)
> in switch statements, we have a huge patch:
> https://build.opensuse.org/package/view_file/network:chromium/chromium-beta/
> chromium-non-void-return.patch?expand=1
Part of it should be resolved if you define NOTREACHED correctly .... Maybe to
__builtin_unreachable.
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
Date: Mon, 25 Feb 2019 20:58:00 -0000
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This looks pretty obvious to me, at least looking at the
-fdump-fortran-original dump. I will try to come up with
a test case.
Would it be possible to check that this also fixes the
nullpointer offset access?
Index: trans-types.c
===================================================================
--- trans-types.c (Revision 269161)
+++ trans-types.c (Arbeitskopie)
@@ -2988,9 +2988,9 @@
f = &sym->formal;
for (a = actual_args; a != NULL; a = a->next)
{
+ (*f) = gfc_get_formal_arglist ();
if (a->expr)
{
- (*f) = gfc_get_formal_arglist ();
snprintf (name, GFC_MAX_SYMBOL_LEN, "_formal_%d", var_num ++);
gfc_get_symbol (name, NULL, &s);
if (a->expr->ts.type == BT_PROCEDURE)
@@ -3012,6 +3012,9 @@
s->attr.intent = INTENT_UNKNOWN;
(*f)->sym = s;
}
+ else
+ (*f)->sym = NULL;
+
f = &((*f)->next);
}
}
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-25
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What configure options are you using? How are you invoking make?
>From gcc-bugs-return-635227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 21:04:46 2019
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This test case also segfaults with a non-instrumeted compiler:
program main
call sub(10, *10, 20)
stop 1
10 continue
end program main
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
Date: Mon, 25 Feb 2019 21:17:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The simplest fix might be:
--- gcc/tree-ssa-strlen.c.jj 2019-01-18 00:33:19.466003372 +0100
+++ gcc/tree-ssa-strlen.c 2019-02-25 21:59:18.743419101 +0100
@@ -1302,6 +1302,7 @@ handle_builtin_strlen (gimple_stmt_itera
= fold_build2_loc (loc, MIN_EXPR, TREE_TYPE (rhs), rhs, bound);
noncst_bound = (TREE_CODE (new_rhs) != INTEGER_CST
+ || TREE_CODE (rhs) != INTEGER_CST
|| tree_int_cst_lt (new_rhs, rhs));
rhs = new_rhs;
The problem is that even when rhs is not INTEGER_CST, when bound is
size_zero_node, then new_rhs is size_zero_node too, but we can't really use
tree_int_cst_lt in that case (nor know anything about the string length).
But, I think we don't want to stay at that, noncst_bound seems to be really
misnamed, but furthermore, I fail to see when it is ever useful to record
something (or when it actually would record anything, because it doesn't it
si->nonzero_chars is INTEGER_CST.
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45819
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45819&action=edit
gcc9-pr89500.patch
Untested fix.
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89492
--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
Patch with slightly extended testcase posted here:
https://gcc.gnu.org/ml/fortran/2019-02/msg00218.html
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
Date: Mon, 25 Feb 2019 22:09:00 -0000
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> (In reply to Martin Liška from comment #7)
> > in switch statements, we have a huge patch:
> > https://build.opensuse.org/package/view_file/network:chromium/chromium-beta/
> > chromium-non-void-return.patch?expand=1
>
> Part of it should be resolved if you define NOTREACHED correctly .... Maybe
> to __builtin_unreachable.
Yep, that's exactly what we've been doing :)
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Subject: [Bug fortran/84779] [7/8/9 Regression] Compiling gfortran.fortran-torture/execute/entry_4.f90 with -O1 or -Os and -fdefault-integer-8 gives an ICE
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--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
Adding the option -fno-tree-sra to -O1 (or -Os for the original case)
makes the ICE go away for me.
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Subject: [Bug c/89501] New: Odd lack of warning about missing initialization
Date: Mon, 25 Feb 2019 22:33:00 -0000
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Bug ID: 89501
Summary: Odd lack of warning about missing initialization
Product: gcc
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Created attachment 45820
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45820&action=edit
You can compile this to see a lack of warning.
We had a simple kernel patch that introduced a stupid bug due to an
uninitialized variable, and while we got it all sorted out and the fix was
trivial, people were surprised by the lack of warning for the uninitialized
case.
I'm adding a test-case as an attachment that largely matches the kernel code
that didn't warn. But it boils down to a pattern of
int ret; /* UNINITIALIZED */
if (somecondition) {
ret = functioncall(x);
if (ret)
return ret;
}
.. some more work ..
return ret; /* Possibly uninitialized return value! */
What I *suspect* happens is
 (a) gcc sees that there is only one assignment to "ret"
 (b) in the same basic block as the assignment, there is a test against "ret"
being nonzero that goes out.
and what I think happens is that (a) causes gcc to consider that assignment to
be the defining assignment (which makes all kinds of sense in an SSA world),
and then (b) means that gcc decides that clearly "ret" has to be zero in any
case that doesn't go out due to the if-test.
So it turns out that gcc almost by mistake generates code that works (and
doesn't warn about it, exactly because it works), even though the source code
was clearly buggy.
The attached test-case is stupid but intentionally made to be as close to the
kernel source case as possible. With it, I can do:
Look, ma: no warning:
gcc -O2 -S -Wall test.c
but this gives the expected warning:
gcc -O2 -S -Wall -DHIDE_PROBLEM test.c
regardless, this is not a huge problem for us, but I decided to make a report
since we have a test case, and maybe somebody gets excited about it.
Thanks,
Linus
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Subject: [Bug c/77754] [7/8/9 Regression] internal compiler error : tree code 'call_expr' is not supported in LTO streams
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 25 22:58:45 2019
New Revision: 269197
URL: https://gcc.gnu.org/viewcvs?rev=269197&root=gcc&view=rev
Log:
PR c/77754
* gcc.c-torture/compile/pr77754-1.c: New test.
* gcc.c-torture/compile/pr77754-2.c: New test.
* gcc.c-torture/compile/pr77754-3.c: New test.
* gcc.c-torture/compile/pr77754-4.c: New test.
* gcc.c-torture/compile/pr77754-5.c: New test.
* gcc.c-torture/compile/pr77754-6.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-1.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-2.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-3.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-4.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-5.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr77754-6.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P3
Status|NEW |UNCONFIRMED
Target Milestone|9.0 |---
Ever confirmed|1 |0
--- Comment #6 from Alan Modra <amodra at gmail dot com> ---
The zero bytes are added by the -fsection-anchors code. They used to align the
next object. Now, the number of zero bytes is wrong (in cases where we used to
have an unterminated string), *and* gcc's calculation of the offset to the
object within the section-anchor block is wrong.
Misaligned strings will mean poorer performance on some targets.
Miscalculating the offset will result in wrong-code errors when it results in
too many objects being placed into a block.
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think it comes down to the same issue as PR 18501.
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Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
GCC 8 branched off mainline in April 2018, long before that merge; it's
necessary to test mainline (that will become GCC 9 and later), not any
existing release, to see if that merge fixed things.
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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--- Comment #2 from Linus Torvalds <torvalds@linux-foundation.org> ---
(In reply to Andrew Pinski from comment #1)
> I think it comes down to the same issue as PR 18501.
Very possibly the same issue in just a different guise.
NOTE! I have in the meantime verified that yes, it does seem to be about the
pattern
int x;
if (somecondition) {
x = something();
if (x != XYZ)
return x;
}
return x;
where gcc seems to turn the "if (x != XYZ) return x" to mean that "x" clearly
_has_ to be XYZ elsewhere.
If I change my kernel-based test-case to do
if (ret != 1)
return ret;
instead of the original
if (ret)
return ret;
then gcc will actually generate code that ends with
movl $1, %eax
popq %rbp
popq %r12
ret
ie it will basically consider "ret" to be initialized to that value "1", even
if the basic block that assigned it was never actually executed.
Knowing how SSA works, I'm not entirely surprised, but obviously if you'd like
to see the warning about buggy source code, it's less than optimal.
Anyway, this shouldn't be a high priority, but it does strike me as a
potentially fairly common pattern that people might be missing warnings for.
Linus
>From gcc-bugs-return-635239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 23:35:41 2019
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
Date: Mon, 25 Feb 2019 23:35:00 -0000
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--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Yup. It's the same as 18501. We meet UNDEFINED and [0,0] resulting in [0,0]
and nothing ever causes reevaluation of the PHI. Things are working as
"expected".
My approach from 2005 would almost certainly address this instance since we'd
see the uninitialized use in the early uninit pass, and later see it went away.
It'd ultimately generate indicating there was an uninitialized use of "ret"
that was optimized away.
But I'm not inclined to rip the scabs of those old wounds and reopen that
discussion (for the umpteenth time)
>From gcc-bugs-return-635242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 23:36:59 2019
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
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Bug 24639 depends on bug 89501, which changed state.
Bug 89501 Summary: Odd lack of warning about missing initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89501
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----------------------------------------------------------------------------
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Resolution|--- |DUPLICATE
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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Jeffrey A. Law <law at redhat dot com> changed:
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--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
Dup. 18501 is the canonical bug for this issue.
*** This bug has been marked as a duplicate of bug 18501 ***
>From gcc-bugs-return-635241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 23:36:58 2019
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Subject: [Bug tree-optimization/18501] [7/8/9 Regression] Missing 'used uninitialized' warning (CCP)
Date: Mon, 25 Feb 2019 23:36:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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| |rg
--- Comment #89 from Jeffrey A. Law <law at redhat dot com> ---
*** Bug 89501 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 23:44:30 2019
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Subject: [Bug c/89495] [9 Regression] gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
Date: Mon, 25 Feb 2019 23:44:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 25 23:43:51 2019
New Revision: 269198
URL: https://gcc.gnu.org/viewcvs?rev=269198&root=gcc&view=rev
Log:
PR c/89495
* c-format.c (maybe_read_dollar_number): Compute nargnum in
HOST_WIDE_INT type to avoid overflows and change overflow_flag
checking.
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-format.c
>From gcc-bugs-return-635244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 25 23:46:29 2019
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #3 from dave.anglin at bell dot net ---
On 2019-02-23 2:34 p.m., redi at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89461
>
> --- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> Oops, that should be:
>
> --- a/libstdc++-v3/include/experimental/io_context
> +++ b/libstdc++-v3/include/experimental/io_context
> @@ -134,7 +134,8 @@ inline namespace v1
> io_context* _M_ctx;
> };
>
> - using count_type = size_t;
> + using count_type
> + = conditional_t<ATOMIC_LONG_LOCK_FREE == 2, unsigned long, unsigned
> int>;
>
> // construct / copy / destroy:
Makes things worse. I think we need to be using a mutes.
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
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Bug 63426 depends on bug 89495, which changed state.
Bug 89495 Summary: [9 Regression] gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89495
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Subject: [Bug c/89495] [9 Regression] gcc/c-family/c-format.c:1272:20: runtime error: signed integer overflow: 214748365 * 10 cannot be represented in type 'int'
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89450] RFC: Strengthen -fstrict-enums
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89450
--- Comment #10 from Marc Glisse <glisse at gcc dot gnu.org> ---
I still think some __attribute__((exhaustive)) on an enum definition would be
useful for this sort of thing.
>From gcc-bugs-return-635248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 00:03:50 2019
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Subject: [Bug libstdc++/64132] [7/8/9 Regression] FAIL: 22_locale/numpunct/members/char/3.cc execution test
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #14 from John David Anglin <danglin at gcc dot gnu.org> ---
This was fixed on trunk somewhere between r264889 and r265360.
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Subject: [Bug target/89502] New: Error: can't encode segment `%fs' with 32-bit address
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89502
Bug ID: 89502
Summary: Error: can't encode segment `%fs' with 32-bit address
Product: gcc
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Target: x32
[hjl@gnu-cfl-1 xx]$ cat x.i
typedef unsigned int uint32_t;
struct ctx
{
uint32_t A;
};
void *
buffer_copy (const struct ctx *ctx, void *resbuf)
{
uint32_t buffer[4];
buffer[0] = (ctx->A);
__builtin_memcpy (resbuf, buffer, sizeof (buffer));
return resbuf;
}
[hjl@gnu-cfl-1 xx]$ make x.o
/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/
-fstack-protector-strong -O1 -frename-registers -mx32 -S x.i
/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/
-fstack-protector-strong -O1 -frename-registers -mx32 -c -o x.o x.s
x.s: Assembler messages:
x.s:11: Error: can't encode segment `%fs' with 32-bit address
x.s:18: Error: can't encode segment `%fs' with 32-bit address
make: *** [Makefile:21: x.o] Error 1
[hjl@gnu-cfl-1 xx]$
The problem is
movl %fs:(%edx), %ecx
In x32, we can't have 0x67 prefix (from %edx) with segment override
since final address will be
segment base + zero-extended (base + index * scale + disp)
Since assembler
https://sourceware.org/bugzilla/show_bug.cgi?id=24263
doesn't know %edx is always positive, it issues an error.
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Subject: [Bug ada/81956] [7/8/9 regression] calling a null procedure is not skipped
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--- Comment #3 from yuta tomino <demoonlit at panathenaia dot halfmoon.jp> ---
I'm trying gcc-8.3. This is probably fixed in 8.x.
Thanks.
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Subject: [Bug target/89502] Error: can't encode segment `%fs' with 32-bit address
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
We should do
movl $24, %edx
movl %fs:(%rdx), %ecx
instead of
movl $24, %edx
movl %fs:(%edx), %ecx
Ever better, we can use UNSPEC_TP to handle it:
movl %fs:24, %ecx
to save a register.
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Subject: [Bug c++/88987] [9 Regression] ICE: unexpected expression '(bool)sm' of kind implicit_conv_expr
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
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Subject: [Bug target/89502] Error: can't encode segment `%fs' with 32-bit address
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #1)
>
> Ever better, we can use UNSPEC_TP to handle it:
>
> movl %fs:24, %ecx
>
This is how TCB is accessed in glibc.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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Alan Modra <amodra at gmail dot com> changed:
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
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bin cheng <amker at gcc dot gnu.org> changed:
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--- Comment #4 from bin cheng <amker at gcc dot gnu.org> ---
Sorry for the breakage, I will investigate this. Thanks
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--- Comment #5 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Tue Feb 26 02:33:26 2019
New Revision: 269203
URL: https://gcc.gnu.org/viewcvs?rev=269203&root=gcc&view=rev
Log:
2019-02-25 Sandra Loosemore <sandra@codesourcery.com>
PR c/80409
gcc/
* doc/extend.texi (Variadic Pointer Args): New section.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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Subject: [Bug c/80409] Document that va_arg(ap, void*) can be used to consume any pointer argument
Date: Tue, 26 Feb 2019 02:37:00 -0000
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sandra at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #6 from sandra at gcc dot gnu.org ---
Fixed on trunk.
>From gcc-bugs-return-635258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 05:36:59 2019
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Subject: [Bug rtl-optimization/80791] [8/9 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Tue, 26 Feb 2019 05:36:00 -0000
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--- Comment #22 from Kewen Lin <linkw at gcc dot gnu.org> ---
As the discussion above, on Power any IV should have an extend (sign/zero) if
its width is less than the GPR width (POINTER_SIZE equivalent here). Although
we don't model this precisely on Power, in most cases it's trivial since we
have TYPE_PRECISION check for those inconsistent width uses, extra cost will be
added, the IV is still the one we prefer even with extension consideration in
cost modeling, that is, considering extension or not doesn't affect the result.
In this case, we have one GENERIC use and one CMP use. Cand 4 was chosen as the
best, but later RTL opts can eliminate CMP use by using counter register for
the loop closing, it means we don't need to consider CMP use in ivopts phase.
Since there is no any uses for 32bit IV, the extension cost can NOT be covered
(ignored) as usual.
The cost for GENERIC use looks like [cand $index ($iv_cost + $comp_cost)]:
1) without considering extension cost, cand 4 (4 + 4) vs. cand 6 (5 + 0)
2) with considering extension cost, cand 4 (8 + 4) vs. cand 6 (9 + 0)
Since cand 6 can't be used for CMP use, so if we still need to consider CMP,
cand 4 is always selected, the cost would be larger introducing cand 6.
But if can predict CMP is useless and model extension, the cost would be: cand
4 (8 + 4) vs. cand 6 (9 + 0). Cand 6 is better.
I did some hacks locally and it works. But the most tricky and hardest part
would be how to predict CMP will be optimized away with CTR eventually,
the correctness of predict is more important. It looks better to think about
the simplest case first. The proposed idea is that:
1) one target specific hook/flag to enable this adjust
2) one target specific predict function to determine the loop can benefit
do_loop CTR transformation (like innermost loop, no calls, niter determined
etc.)
3) check only one CMP with biv after find_interesting_uses, biv's width <
POINTER_SIZE, remove the group
4) mark the biv preserved to avoid to be removed in remove_unused_ivs
5) adjust determine_iv_cost for those IVs which require extension (optinal,
for this case, it's not necessary but probably good as more precise modeling)
Hi All,
I'm a new comer to gcc and not sure the above idea is practical enough, could
you kindly give me some comments and suggestion?
>From gcc-bugs-return-635259-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 06:39:22 2019
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Subject: [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
Date: Tue, 26 Feb 2019 06:39:00 -0000
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Piotr Kubaj <pkubaj at anongoth dot pl> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pkubaj at anongoth dot pl
--- Comment #13 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
I have similar errors when building GCC 9:
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/cpuprof.go:73:26:
error: reference to undefined name 'nanotime'
73 | cpuprof.log.write(nil, nanotime(), hdr[:], nil)
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/cpuprof.go:105:33:
error: reference to undefined name 'nanotime'
105 | cpuprof.log.write(&gp.labels, nanotime(), hdr[:], stk)
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/lock_futex.go:199:14:
error: reference to undefined name 'nanotime'
199 | deadline := nanotime() + ns
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/lock_futex.go:213:10:
error: reference to undefined name 'nanotime'
213 | now := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:591:20:
error: reference to undefined name 'nanotime'
591 | assistDuration := nanotime() - c.markStartTime
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:721:12:
error: reference to undefined name 'nanotime'
721 | delta := nanotime() - gcController.markStartTime
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:745:9:
error: reference to undefined name 'nanotime'
745 | now := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1279:9:
error: reference to undefined name 'nanotime'
1279 | now := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1492:9:
error: reference to undefined name 'nanotime'
1492 | now := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1591:15:
error: reference to undefined name 'nanotime'
1591 | startTime := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1656:9:
error: reference to undefined name 'nanotime'
1656 | now := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1882:16:
error: reference to undefined name 'nanotime'
1882 | startTime := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgc.go:1933:15:
error: reference to undefined name 'nanotime'
1933 | duration := nanotime() - startTime
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgcmark.go:437:15:
error: reference to undefined name 'nanotime'
437 | startTime := nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mgcmark.go:480:14:
error: reference to undefined name 'nanotime'
480 | duration := nanotime() - startTime
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/mheap.go:1215:19:
error: reference to undefined name 'nanotime'
1215 | s.unusedsince = nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/netpoll.go:220:8:
error: reference to undefined name 'nanotime'
220 | d += nanotime()
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/os_freebsd.go:18:19:
error: reference to undefined name '_CTL_HW'
18 | mib := [2]uint32{_CTL_HW, _HW_PAGESIZE}
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/os_freebsd.go:18:28:
error: reference to undefined name '_HW_PAGESIZE'
18 | mib := [2]uint32{_CTL_HW, _HW_PAGESIZE}
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/os_freebsd.go:21:9:
error: reference to undefined name 'sysctl'
21 | ret := sysctl(&mib[0], 2, (*byte)(unsafe.Pointer(&out)), &nout, nil,
0)
| ^
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/libgo/go/runtime/os_freebsd.go:15:75:
error: use of undefined type 'umtx_time'
15 | func sys_umtx_op(addr *uint32, mode int32, val uint32, uaddr1 uinptr,
ts *umtx_time) int32
There are more of those errors, all are related to timekeeping.
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Tue, 26 Feb 2019 07:04:00 -0000
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--- Comment #2 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
I compile from FreeBSD ports tree (just change the port's Makefile not to use
external (newer) GCC, but the in-base 4.2.1), so it adds some environment
variables.
/usr/bin/env CC="g
cc6" CPP="cpp6" CXX="g++6" CFLAGS="-O2 -pipe -DLIBICONV_PLUG
-fno-strict-aliasing " CPPFLAGS="-DLIBICONV_PLUG" CXXFLAGS="-O2 -pipe
-DLIBICONV_PLUG -DLIBICONV_PLUG " LDFLAGS=" " LIBS=""
INSTALL="/usr/bin/install -c" INSTALL_DATA="install -m 0644"
INSTALL_LIB="install -s -m 0644" INSTALL_PROGRAM="install -s -m 555"
INSTALL_SCRIPT="install -m 555" MAKE=gmake
ac_cv_path_PERL=/usr/local/bin/perl ac_cv_path_PERL_PATH=/usr/local/bin/perl
PERL_USE_UNSAFE_INC=1 UNAME_m="powerpc64"
XDG_DATA_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
XDG_CONFIG_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
PATH=/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
SHELL=/bin/sh CONFIG_SHELL=/bin/sh ADDR2LINE="/usr/local/bin/addr2line"
AR="/usr/local/bin/ar" AS="/usr/local/bin/as" CPPFILT="/usr/local/bin/c++filt"
GPROF="/usr/local/bin/gprof" LD="/usr/local/bin/ld" NM="/usr/local/bin/nm"
OBJCOPY="/usr/local/bin/objcopy" OBJDUMP="/usr/local/bin/objdump"
RANLIB="/usr/local/bin/ranlib" READELF="/usr/local/bin/readelf"
SIZE="/usr/local/bin/size" STRINGS="/usr/local/bin/strings"
CONFIG_SITE=/usr/local/poudriere/ports/default/Templates/config.site
lt_cv_sys_max_cmd_len=262144
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/configure
--enable-multilib --with-build-config=bootstrap-debug --disable-nls
--enable-gnu-indirect-function --libdir=/usr/local/lib/gcc9
--libexecdir=/usr/local/libexec/gcc9 --program-suffix=9
--with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc9/include/c++/
--with-ld=/usr/local/bin/ld --with-pkgversion="FreeBSD Ports Collection"
--with-system-zlib --enable-languages=c,c++,objc,fortran --prefix=/usr/local
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Tue, 26 Feb 2019 07:05:00 -0000
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--- Comment #3 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
Make is executed with:
/usr/bin/env PERL_USE_UNSAFE_INC=1
XDG_DATA_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
XDG_CONFIG_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
PATH=/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
NO_PIE=yes MK_DEBUG_FILES=no MK_KERNEL_SYMBOLS=no SHELL=/bin/sh NO_LINT=YES
ADDR2LINE="/usr/local/bin/addr2line" AR="/usr/local/bin/ar"
AS="/usr/local/bin/as" CPPFILT="/usr/local/bin/c++filt"
GPROF="/usr/local/bin/gprof" LD="/usr/local/bin/ld" NM="/usr/local/bin/nm"
OBJCOPY="/usr/local/bin/objcopy" OBJDUMP="/usr/local/bin/objdump"
RANLIB="/usr/local/bin/ranlib" READELF="/usr/local/bin/readelf"
SIZE="/usr/local/bin/size" STRINGS="/usr/local/bin/strings" PREFIX=/usr/local
LOCALBASE=/usr/local CC="gcc6" CFLAGS="-O2 -pipe -DLIBICONV_PLUG
-fno-strict-aliasing " CPP="cpp6" CPPFLAGS="-DLIBICONV_PLUG" LDFLAGS=" "
LIBS="" CXX="g++6" CXXFLAGS="-O2 -pipe -DLIBICONV_PLUG -DLIBICONV_PLUG "
MANPREFIX="/usr/local" BSD_INSTALL_PROGRAM="install -s -m 555"
BSD_INSTALL_LIB="install -s -m 0644" BSD_INSTALL_SCRIPT="install -m 555"
BSD_INSTALL_DATA="install -m 0644" BSD_INSTALL_MAN="install -m 444" gmake -f
Makefile -j16 MAKEINFOFLAGS="--no-split" bootstrap-lean
>From gcc-bugs-return-635262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 07:08:52 2019
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From: "pkubaj at anongoth dot pl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Tue, 26 Feb 2019 07:08:00 -0000
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--- Comment #4 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
Sorry, that was for a build with GCC 6. A build with GCC 4.2.1 is done with the
following.
Configure:
/usr/bin/env CC="cc" CPP="cpp" CXX="c++" CFLAGS="-O2 -pipe -DLIBICONV_PLUG
-fno-strict-aliasing " CPPFLAGS="-DLIBICONV_PLUG" CXXFLAGS="-O2 -pipe
-DLIBICONV_PLUG -fno-strict-aliasing -DLIBICONV_PLUG " LDFLAGS=" " LIBS=""
INSTALL="/usr/bin/install -c" INSTALL_DATA="install -m 0644"
INSTALL_LIB="install -s -m 0644" INSTALL_PROGRAM="install -s -m 555"
INSTALL_SCRIPT="install -m 555" MAKE=gmake
ac_cv_path_PERL=/usr/local/bin/perl ac_cv_path_PERL_PATH=/usr/local/bin/perl
PERL_USE_UNSAFE_INC=1 UNAME_m="powerpc64"
XDG_DATA_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
XDG_CONFIG_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
PATH=/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
SHELL=/bin/sh CONFIG_SHELL=/bin/sh ADDR2LINE="/usr/local/bin/addr2line"
AR="/usr/local/bin/ar" AS="/usr/local/bin/as" CPPFILT="/usr/local/bin/c++filt"
GPROF="/usr/local/bin/gprof" LD="/usr/local/bin/ld" NM="/usr/local/bin/nm"
OBJCOPY="/usr/local/bin/objcopy" OBJDUMP="/usr/local/bin/objdump"
RANLIB="/usr/local/bin/ranlib" READELF="/usr/local/bin/readelf"
SIZE="/usr/local/bin/size" STRINGS="/usr/local/bin/strings"
CONFIG_SITE=/usr/local/poudriere/ports/default/Templates/config.site
lt_cv_sys_max_cmd_len=262144
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190217/configure
--enable-multilib --with-build-config=bootstrap-debug --disable-nls
--enable-gnu-indirect-function --libdir=/usr/local/lib/gcc9
--libexecdir=/usr/local/libexec/gcc9 --program-suffix=9
--with-as=/usr/local/bin/as --with-gmp=/usr/local
--with-gxx-include-dir=/usr/local/lib/gcc9/include/c++/
--with-ld=/usr/local/bin/ld --with-pkgversion="FreeBSD Ports Collection"
--with-system-zlib --enable-languages=c,c++,objc,fortran --prefix=/usr/local
Make:
/usr/bin/env PERL_USE_UNSAFE_INC=1
XDG_DATA_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
XDG_CONFIG_HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
HOME=/usr/local/poudriere/ports/default/lang/gcc9-devel/work
PATH=/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
NO_PIE=yes MK_DEBUG_FILES=no MK_KERNEL_SYMBOLS=no SHELL=/bin/sh NO_LINT=YES
ADDR2LINE="/usr/local/bin/addr2line" AR="/usr/local/bin/ar"
AS="/usr/local/bin/as" CPPFILT="/usr/local/bin/c++filt"
GPROF="/usr/local/bin/gprof" LD="/usr/local/bin/ld" NM="/usr/local/bin/nm"
OBJCOPY="/usr/local/bin/objcopy" OBJDUMP="/usr/local/bin/objdump"
RANLIB="/usr/local/bin/ranlib" READELF="/usr/local/bin/readelf"
SIZE="/usr/local/bin/size" STRINGS="/usr/local/bin/strings" PREFIX=/usr/local
LOCALBASE=/usr/local CC="cc" CFLAGS="-O2 -pipe -DLIBICONV_PLUG
-fno-strict-aliasing " CPP="cpp" CPPFLAGS="-DLIBICONV_PLUG" LDFLAGS=" "
LIBS="" CXX="c++" CXXFLAGS="-O2 -pipe -DLIBICONV_PLUG -fno-strict-aliasing
-DLIBICONV_PLUG " MANPREFIX="/usr/local" BSD_INSTALL_PROGRAM="install -s -m
555" BSD_INSTALL_LIB="install -s -m 0644" BSD_INSTALL_SCRIPT="install -m
555" BSD_INSTALL_DATA="install -m 0644" BSD_INSTALL_MAN="install -m 444"
gmake -f Makefile -j16 MAKEINFOFLAGS="--no-split" bootstrap-lean
>From gcc-bugs-return-635263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 07:22:08 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Tue, 26 Feb 2019 07:22:00 -0000
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--- Comment #7 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Alan Modra from comment #6)
> The zero bytes are added by the -fsection-anchors code. They used to align
> the next object. Now, the number of zero bytes is wrong (in cases where we
> used to have an unterminated string), *and* gcc's calculation of the offset
> to the object within the section-anchor block is wrong.
>
> Misaligned strings will mean poorer performance on some targets.
> Miscalculating the offset will result in wrong-code errors when it results
> in too many objects being placed into a block.
Well, I see, the alignment is not right, but even if the strings
are near to each other, they will be moved to other segments,
if the string constant was already used in another module.
Are there cases where the string constants need to be near the
section anchor, what is that and how does it look like in an assembly file?
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Tue, 26 Feb 2019 07:56:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #5)
> Adding zero bytes after each string constant makes no sense IMHO,
> since the linker will merge the constants, and so aligning the
> constants with .zero does probably not work, but the should be
> benign, except for that the alignment of the string constants.
The linker string merging code is not working with the asm directives, it
doesn't really care what part of the string comes from .string or .ascii and
what part comes from .zero directives. And, what do you find wrong on the
alignment?
The section name indicates 8 byte alignment and .align 3 directive (which is
like .balign 8 on this target) says the alignment of the strings is 8 byte, so
all the strings (including a single terminating '\0') must be padded to
multiples of 8 bytes by zeros.
>From gcc-bugs-return-635265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:12:58 2019
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/81956] [7/8/9 regression] calling a null procedure is not skipped
Date: Tue, 26 Feb 2019 08:12:00 -0000
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Feb 26 08:12:21 2019
New Revision: 269205
URL: https://gcc.gnu.org/viewcvs?rev=269205&root=gcc&view=rev
Log:
PR ada/81956
Backport from mainline
2017-09-06 Ed Schonberg <schonberg@adacore.com>
* exp_ch6.adb (Expand_Call_Helper): Do not optimize calls to
null procedures when GNAT coverage is used, so that their (empty)
bodies are properly covered.
2017-09-06 Ed Schonberg <schonberg@adacore.com>
* exp_ch6.adb (Expand_Call_Helper): Replace call to null
procedure by a single null statement, after evaluating the
actuals that require it.
Modified:
branches/gcc-7-branch/gcc/ada/ChangeLog
branches/gcc-7-branch/gcc/ada/exp_ch6.adb
>From gcc-bugs-return-635266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:14:31 2019
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Subject: [Bug ada/81956] [7 regression] call to null procedure not optimized away
Date: Tue, 26 Feb 2019 08:14:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
Summary|[7/8/9 regression] calling |[7 regression] call to null
|a null procedure is not |procedure not optimized
|skipped |away
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed in 7.5 and later releases.
>From gcc-bugs-return-635267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:22:57 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
Date: Tue, 26 Feb 2019 08:22:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #2)
> This looks pretty obvious to me, at least looking at the
> -fdump-fortran-original dump. I will try to come up with
> a test case.
>
> Would it be possible to check that this also fixes the
> nullpointer offset access?
>
> Index: trans-types.c
> ===================================================================
> --- trans-types.c (Revision 269161)
> +++ trans-types.c (Arbeitskopie)
> @@ -2988,9 +2988,9 @@
> f = &sym->formal;
> for (a = actual_args; a != NULL; a = a->next)
> {
> + (*f) = gfc_get_formal_arglist ();
> if (a->expr)
> {
> - (*f) = gfc_get_formal_arglist ();
> snprintf (name, GFC_MAX_SYMBOL_LEN, "_formal_%d", var_num ++);
> gfc_get_symbol (name, NULL, &s);
> if (a->expr->ts.type == BT_PROCEDURE)
> @@ -3012,6 +3012,9 @@
> s->attr.intent = INTENT_UNKNOWN;
> (*f)->sym = s;
> }
> + else
> + (*f)->sym = NULL;
> +
> f = &((*f)->next);
> }
> }
I can confirm this works fine for the test-case as well as for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89496#c3
Thanks for the fix.
>From gcc-bugs-return-635268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:36:10 2019
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Subject: [Bug c/89448] Failure to generate diagnostic for "complex int" (OK for "_Complex int")
Date: Tue, 26 Feb 2019 08:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89448
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yes.
>From gcc-bugs-return-635269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:37:19 2019
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Subject: [Bug target/89455] [9 Regression] FAIL: g++.target/i386/mv16.C on Westmere
Date: Tue, 26 Feb 2019 08:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89455
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-635270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:42:41 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89458] adding aligned attribute to struct causes too much to be copied
Date: Tue, 26 Feb 2019 08:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89458
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |jason at gcc dot gnu.org
Component|other |c++
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that sizeof(Obj) is 256. But yes, the padding at the end of the
object need not be copied. Thus this is a missed optimization (I'm not sure we
actually store the "original" size anywhere though). Maybe the FE could
use the classtype-as-base type here?
>From gcc-bugs-return-635271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:43:16 2019
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Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
Date: Tue, 26 Feb 2019 08:43:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-26
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>From gcc-bugs-return-635272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:46:14 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 08:46:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-26
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|[8.2 regression] ICE caused |[8 Regression] ICE caused
|by Segmentation Fault when |by Segmentation Fault when
|compiling cups 2.2.10 with |compiling cups 2.2.10 with
|LTO flags enabled |LTO flags enabled
Ever confirmed|0 |1
Known to fail| |8.3.0
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, investigating right now.
>From gcc-bugs-return-635273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:48:57 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Tue, 26 Feb 2019 08:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
Version|unknown |9.0
Ever confirmed|0 |1
Severity|enhancement |normal
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
stmt removal should generate a # DEBUG i = NULL note but eventually removal
inside a CFG cycle is awkward enough that this doesn't work reliably. In
fact we seem to get an extra = 0 note, likely from the attempt to generate
a i => i_5 one.
--- t.i.036t.dse1 2019-02-26 09:46:03.325257454 +0100
+++ t.i.037t.cddce1 2019-02-26 09:46:03.329257503 +0100
...
@@ -24,22 +52,10 @@
if (a.1_3 <= 9)
goto <bb 3>; [INV]
else
- goto <bb 6>; [INV]
-
- <bb 5> :
- # DEBUG BEGIN_STMT
- i_11 = i_5 + 1;
- # DEBUG i => i_11
-
- <bb 6> :
- # i_5 = PHI <i_11(5), 0(4)>
- # DEBUG i => i_5
- if (i_5 != 6)
goto <bb 5>; [INV]
- else
- goto <bb 7>; [INV]
- <bb 7> :
+ <bb 5> :
+ # DEBUG i => 0
# DEBUG BEGIN_STMT
optimize_me_not ();
return 0;
>From gcc-bugs-return-635274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:49:18 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89503] New: Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
Date: Tue, 26 Feb 2019 08:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89503
Bug ID: 89503
Summary: Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking, ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
Comparing a '--enable-checking=yes' build with a
'--enable-checking=yes,extra,df,fold,rtl' build of r269110 (but this started
earlier, but can't tell exactly when), I see:
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
100)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
101)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
103)
[...]
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
230)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
231)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
232)
PASS: gcc.dg/warn-strlen-no-nul.c (test for warnings, line 26)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
27)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
276)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
277)
[...]
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
74)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
75)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
76)
PASS: gcc.dg/warn-strlen-no-nul.c (test for warnings, line 8)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
81)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
85)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
92)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
96)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
98)
[-PASS:-]{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for warnings, line
99)
[-PASS:-]{+FAIL: gcc.dg/warn-strlen-no-nul.c (internal compiler error)+}
{+FAIL:+} gcc.dg/warn-strlen-no-nul.c (test for excess errors)
[...]/gcc/testsuite/gcc.dg/warn-strlen-no-nul.c: In function 'test_26':
[...]/gcc/testsuite/gcc.dg/warn-strlen-no-nul.c:26:1: warning: 'strlen'
argument missing terminating nul [-Wstringop-overflow=]
[...]/gcc/testsuite/gcc.dg/warn-strlen-no-nul.c:8:12: note: referenced
argument declared here
[...]/gcc/testsuite/gcc.dg/warn-strlen-no-nul.c:26:1: internal compiler
error: fold check: original tree changed by fold
0xc5ce8f fold_check_failed
[...]/gcc/fold-const.c:12106
0xc90d44 fold(tree_node*)
[...]/gcc/fold-const.c:12083
0xa4935e c_fully_fold_internal
[...]/gcc/c/c-fold.c:626
0xa4bb07 c_fully_fold(tree_node*, bool, bool*, bool)
[...]/gcc/c/c-fold.c:125
0xa123c7 convert_arguments
[...]/gcc/c/c-typeck.c:3542
0xa123c7 build_function_call_vec(unsigned int, vec<unsigned int, va_heap,
vl_ptr>, tree_node*, vec<tree_node*, va_gc, vl_embed>*, vec<tree_node*, va_gc,
vl_embed>*)
[...]/gcc/c/c-typeck.c:3084
0xa2ef11 c_parser_postfix_expression_after_primary
[...]/gcc/c/c-parser.c:9591
0xa207a1 c_parser_postfix_expression
[...]/gcc/c/c-parser.c:9270
0xa2a35f c_parser_unary_expression
[...]/gcc/c/c-parser.c:7380
0xa2b9cf c_parser_cast_expression
[...]/gcc/c/c-parser.c:7222
0xa2bc48 c_parser_binary_expression
[...]/gcc/c/c-parser.c:7025
0xa2cc15 c_parser_conditional_expression
[...]/gcc/c/c-parser.c:6759
0xa2d240 c_parser_expr_no_commas
[...]/gcc/c/c-parser.c:6676
0xa2d4a1 c_parser_expression
[...]/gcc/c/c-parser.c:9727
0xa2dbc7 c_parser_expression_conv
[...]/gcc/c/c-parser.c:9760
0xa3d17b c_parser_statement_after_labels
[...]/gcc/c/c-parser.c:5610
0xa3f27a c_parser_compound_statement_nostart
[...]/gcc/c/c-parser.c:5148
0xa3f808 c_parser_compound_statement
[...]/gcc/c/c-parser.c:4982
0xa40f12 c_parser_declaration_or_fndef
[...]/gcc/c/c-parser.c:2354
0xa47f6f c_parser_external_declaration
[...]/gcc/c/c-parser.c:1653
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89472] FAIL: gcc.dg/debug/dwarf2/inline5.c scan-assembler-times DW_TAG_lexical_block\\)[^#/!@;\\|]*[#/!@;\\|]+ +[^#/!@\\|]*\\(DIE \\(0x[0-9a-f]*\\) DW_TAG_variable 1
Date: Tue, 26 Feb 2019 08:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89472
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Bah, another one. A patch to XFAIL hppa is pre-approved.
>From gcc-bugs-return-635276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:55:41 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89504] New: Checking ICE in 'gcc.dg/rtl/x86_64/pro_and_epilogue.c'
Date: Tue, 26 Feb 2019 08:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89504
Bug ID: 89504
Summary: Checking ICE in 'gcc.dg/rtl/x86_64/pro_and_epilogue.c'
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
Comparing a '--enable-checking=yes' build with a
'--enable-checking=yes,extra,df,fold,rtl' build of r269110 (but this started
much, much earlier, but can't tell exactly when), I see:
[-PASS:-]{+FAIL: gcc.dg/rtl/x86_64/pro_and_epilogue.c (internal compiler
error)+}
{+FAIL:+} gcc.dg/rtl/x86_64/pro_and_epilogue.c (test for excess errors)
[-PASS:-]{+FAIL:+} gcc.dg/rtl/x86_64/pro_and_epilogue.c scan-rtl-dump-times
pro_and_epilogue "NOTE_INSN_PROLOGUE_END" 1
[-PASS:-]{+FAIL:+} gcc.dg/rtl/x86_64/pro_and_epilogue.c scan-rtl-dump-times
pro_and_epilogue "simple_return" 2
during RTL pass: pro_and_epilogue
dump file: pro_and_epilogue.c.288r.pro_and_epilogue
[...]/gcc/testsuite/gcc.dg/rtl/x86_64/pro_and_epilogue.c: In function
'test_1':
[...]/gcc/testsuite/gcc.dg/rtl/x86_64/pro_and_epilogue.c:103:1: internal
compiler error: in df_scan_verify, at df-scan.c:4233
0x5ffb7f df_scan_verify()
[...]/gcc/df-scan.c:4233
0xb729f8 df_verify()
[...]/gcc/df-core.c:1817
0xb72a87 df_analyze_1
[...]/gcc/df-core.c:1213
0xca4fb2 thread_prologue_and_epilogue_insns()
[...]/gcc/function.c:5840
0xca5872 rest_of_handle_thread_prologue_and_epilogue
[...]/gcc/function.c:6342
0xca5872 execute
[...]/gcc/function.c:6384
>From gcc-bugs-return-635277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 08:56:49 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Tue, 26 Feb 2019 08:56:00 -0000
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--- Comment #9 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
> And, what do you find wrong on the alignment?
In the case of the artificially zero terminated strings,
the .zero is now wrong, and they can actually screw up the
necessary alignment.
Maybe the easiest way out would be simply not try to put
non-zero terminated strings in merge sections, when the
-fsection-anchors is in effect?
--- varasm.c.orig 2019-01-25 17:57:32.000000000 +0100
+++ varasm.c 2019-02-26 09:48:48.061315685 +0100
@@ -838,7 +838,8 @@
if (j == unit)
break;
}
- if (i == len - unit || (unit == 1 && i == len))
+ if (i == len - unit || (unit == 1 && i == len &&
+ !flag_section_anchors))
{
sprintf (name, "%s.str%d.%d", prefix,
modesize / 8, (int) (align / 8));
>From gcc-bugs-return-635278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:01:30 2019
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Subject: [Bug tree-optimization/89479] __restrict
Date: Tue, 26 Feb 2019 09:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
I believe there's a dup somewhere. Basically function calls are not
annotated with {base,clique} (our implementation detail exposing __restrict
to the IL). To elaborate further to successfully mark a function call
with clique == 1 and base == 0 we have to prove the pointer marked restrict
doesn't escape the function through calls since I belive that for
int *p;
void g() { *p = 1; }
void f(int *q) { p = q; }
int foo(const int* x, void g())
{
f(x);
int result = *x;
g();
result += *x;
return result;
}
the access in g is still based on x since the above is equivalent to
int foo(const int* x, void g())
{
int *p = x;
int result = *x;
*p = 1;
result += *x;
return result;
}
letting aside eventual issues with the const qualification of *x.
>From gcc-bugs-return-635279-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:03:37 2019
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Subject: [Bug c++/89480] internal compiler error: in unify, at cp/pt.c:22160 with the template argument force conversion
Date: Tue, 26 Feb 2019 09:03:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Known to fail| |4.8.5, 9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Not sure if the code is valid.
>From gcc-bugs-return-635281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:05:27 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |st at quanttec dot com
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89486 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:05:25 2019
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Subject: [Bug c++/89486] GCC fails to compile designated initializer use involving implicit conversion
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----------------------------------------------------------------------------
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 71446 ***
>From gcc-bugs-return-635282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:07:58 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
Date: Tue, 26 Feb 2019 09:07:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like may_be_nonaddressable_p misses a VAR_DECL case checking for hard
registers and the code in loop-distribution should use that helper to fend
off generating invalid addresses.
>From gcc-bugs-return-635283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:08:09 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
Date: Tue, 26 Feb 2019 09:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
Date: Tue, 26 Feb 2019 09:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup of PR89451 I guess.
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
Date: Tue, 26 Feb 2019 09:18:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testing patch.
>From gcc-bugs-return-635286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:26:42 2019
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Tue, 26 Feb 2019 09:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it looks like stage1 gcc is miscompiled somehow. I wonder if you can avoid
setting CFLAGS et al?
>From gcc-bugs-return-635287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:28:34 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 09:28:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Does trunk work? Also I wonder whether the graphite flags are necessary to
trigger the issue (and as recommendation, don't use -fgraphite-identity,
it is for debugging, also avoid -floop-nest-optimize and -fipa-pta).
>From gcc-bugs-return-635288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:31:05 2019
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Subject: [Bug debug/89498] [8/9 Regression] ICE in AT_loc_list, at dwarf2out.c:4871
Date: Tue, 26 Feb 2019 09:31:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can't reproduce on trunk. If #include <math.h> is necessary can you attach
preprocessed source please?
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Subject: [Bug tree-optimization/89499] [7/8/9 Regression] ICE in expand_UNIQUE, at internal-fn.c:2605
Date: Tue, 26 Feb 2019 09:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:39:11 2019
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
Date: Tue, 26 Feb 2019 09:39:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #3)
> Yup. It's the same as 18501. We meet UNDEFINED and [0,0] resulting in
> [0,0] and nothing ever causes reevaluation of the PHI. Things are working
> as "expected".
And this meeting helps us avoid bogus warnings for cases where GCC has
difficulties proving dead code paths are actually dead ... In fact
to preserve uninit warnings we avoid doing the same things for copies,
thus when meeting [i, i] with UNDEFINED which in fact causes some
false positives to appear... (and with my
GCC-is-an-optimizing-compiler-not-a-static-analysis-tool hat on I'd wanted to
change that more than once,
but testsuite regressions prevented me from doing that)
Uninit warnings are hard ;)
>From gcc-bugs-return-635291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:39:37 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 09:39:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Does trunk work?
Thunk is fine.
> Also I wonder whether the graphite flags are necessary to
> trigger the issue (and as recommendation, don't use -fgraphite-identity,
No.
> it is for debugging, also avoid -floop-nest-optimize and -fipa-pta).
Give me some time, I'm reducing that right now (both options and source files).
>From gcc-bugs-return-635292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:50:41 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89497
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45821
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45821&action=edit
Unreduced test-case
Started to fail with r268745 which is definitely a culprit:
$ gcc 11.i 22.i 33.i 44.i -fPIC -O3 -fno-semantic-interposition -flto=8 -shared
during GIMPLE pass: vrp
ppd-localize.c: In function ‘ppdLocalize’:
ppd-localize.c:51:1: internal compiler error: Segmentation fault
ppdLocalize(ppd_file_t *ppd) /* I - PPD file */
^
0xdfd704 crash_signal
../../gcc/toplev.c:325
0x7ffff79b1e0f ???
/usr/src/debug/glibc-2.29-1.3.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xf2ac71 ptr_derefs_may_alias_p(tree_node*, tree_node*)
../../gcc/tree-ssa-alias.c:284
0xf2d2de indirect_refs_may_alias_p
../../gcc/tree-ssa-alias.c:1303
0xf2dbfa refs_may_alias_p_1(ao_ref*, ao_ref*, bool)
../../gcc/tree-ssa-alias.c:1498
0xaa0876 gimple_fold_builtin_memory_op
../../gcc/gimple-fold.c:918
0xaa79ca gimple_fold_builtin
../../gcc/gimple-fold.c:3657
0xaa95c9 gimple_fold_call
../../gcc/gimple-fold.c:4159
0xaaba38 fold_stmt_1
../../gcc/gimple-fold.c:4834
0xaac069 fold_stmt(gimple_stmt_iterator*)
../../gcc/gimple-fold.c:4981
0xe44b2a replace_uses_by(tree_node*, tree_node*)
../../gcc/tree-cfg.c:2025
0xe44fac gimple_merge_blocks
../../gcc/tree-cfg.c:2111
0x8c1c5a merge_blocks(basic_block_def*, basic_block_def*)
../../gcc/cfghooks.c:793
0xe5cccc cleanup_tree_cfg_bb
../../gcc/tree-cfgcleanup.c:715
0xe5cfae cleanup_tree_cfg_1
../../gcc/tree-cfgcleanup.c:797
0xe5d2f6 cleanup_tree_cfg_noloop
../../gcc/tree-cfgcleanup.c:911
0xe5d410 cleanup_tree_cfg()
../../gcc/tree-cfgcleanup.c:971
0xcdc9ef execute_function_todo
../../gcc/passes.c:1947
0xcdbb84 do_per_function
../../gcc/passes.c:1659
0xcdcd6d execute_todo
../../gcc/passes.c:2048
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 09:53:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45822
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45822&action=edit
Reduced test-case
However, this reduced test-case fails with GCC-8 branch for all releases.
Started on trunk with r256457 and was fixed on trunk r265421:
$ gcc 1.i 2.i 3.i 4.i -fPIC -O3 -fno-semantic-interposition -flto=8 -shared
3.i:9:4: warning: type of ‘ppdFindNextAttr’ does not match original declaration
[-Wlto-type-mismatch]
b *ppdFindNextAttr();
^
2.i:1:6: note: ‘ppdFindNextAttr’ was previously declared here
int *ppdFindNextAttr() { return 0; }
^
2.i:1:6: note: code may be misoptimized unless -fno-strict-aliasing is used
during GIMPLE pass: vrp
3.i: In function ‘d’:
3.i:14:6: internal compiler error: Segmentation fault
void d() {
^
0xdfd704 crash_signal
../../gcc/toplev.c:325
0x7ffff79b1e0f ???
/usr/src/debug/glibc-2.29-1.3.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xf2a8bc ptr_deref_may_alias_decl_p
../../gcc/tree-ssa-alias.c:169
0xf2cb91 indirect_ref_may_alias_decl_p
../../gcc/tree-ssa-alias.c:1154
0xf2db42 refs_may_alias_p_1(ao_ref*, ao_ref*, bool)
../../gcc/tree-ssa-alias.c:1488
0xaa0876 gimple_fold_builtin_memory_op
../../gcc/gimple-fold.c:918
0xaa79ca gimple_fold_builtin
../../gcc/gimple-fold.c:3657
0xaa95c9 gimple_fold_call
../../gcc/gimple-fold.c:4159
0xaaba38 fold_stmt_1
../../gcc/gimple-fold.c:4834
0xaac069 fold_stmt(gimple_stmt_iterator*)
../../gcc/gimple-fold.c:4981
0xe44b2a replace_uses_by(tree_node*, tree_node*)
../../gcc/tree-cfg.c:2025
0xe44fac gimple_merge_blocks
../../gcc/tree-cfg.c:2111
0x8c1c5a merge_blocks(basic_block_def*, basic_block_def*)
../../gcc/cfghooks.c:793
0xe5cccc cleanup_tree_cfg_bb
../../gcc/tree-cfgcleanup.c:715
0xe5cfae cleanup_tree_cfg_1
../../gcc/tree-cfgcleanup.c:797
0xe5d2f6 cleanup_tree_cfg_noloop
../../gcc/tree-cfgcleanup.c:911
0xe5d410 cleanup_tree_cfg()
../../gcc/tree-cfgcleanup.c:971
0xcdc9ef execute_function_todo
../../gcc/passes.c:1947
0xcdbb84 do_per_function
../../gcc/passes.c:1659
0xcdcd6d execute_todo
../../gcc/passes.c:2048
>From gcc-bugs-return-635294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:54:09 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 09:54:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |7.4.0, 9.0
Known to fail| |8.1.0, 8.2.0
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Will it help Richi? Can you please take a look?
>From gcc-bugs-return-635295-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 09:56:02 2019
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Subject: [Bug c/89448] Failure to generate diagnostic for "complex int" (OK for "_Complex int")
Date: Tue, 26 Feb 2019 09:56:00 -0000
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--- Comment #4 from Mark RISON <mrison at hotmail dot com> ---
[Aside...
I can't see a way to raise a bug on the GCC Bugzilla itself, so:
The status of this bug is currently NEW. However the explanatory hyperlink,
https://gcc.gnu.org/bugzilla/page.cgi?id=fields.html#bug_status suggests only
the following are valid statuses: UNCONFIRMED, CONFIRMED, IN_PROGRESS,
RESOLVED, VERIFIED.]
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89505] New: [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 10:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89505
Bug ID: 89505
Summary: [9 Regression] LibreOffice miscompilation starting
with r260383
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
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Created attachment 45823
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45823&action=edit
rh1682941.ii.xz
The attached testcase from LibreOffice is miscompiled starting with r260383
with
-O2 -fPIC -std=c++2a, unfortunately don't have a smaller testcase so far and
haven't succeeded in coming up with a reduced one.
In the dumps, look for case 263392: or 263392 and in *.optimized dump it should
look like:
_59 = rtl_str_toInt32 (_58, 10);
_148 = MIN_EXPR <_59, 1024>;
_73 = MAX_EXPR <_148, 1>;
this_12(D)->nColCount = _73;
but starting with r260383 it is not.
We have before dse1 code like:
D.857771 = 1;
...
_129 = rtl_str_toInt32 (_128, 10);
D.857770 = _129;
if (_129 <= 0)
goto <bb 8>; [34.00%]
else
goto <bb 9>; [66.00%]
<bb 8> :
<bb 9> :
# _119 = PHI <&D.857770(7), &D.857771(8)>
_12 = *_119;
this_29(D)->nColCount = _12;
D.857770 ={v} {CLOBBER};
D.857771 ={v} {CLOBBER};
D.857772 = 1024;
_13 = &this_29(D)->nColCount;
if (_12 > 1024)
goto <bb 10>; [34.00%]
else
goto <bb 11>; [66.00%]
<bb 10> :
<bb 11> :
# _116 = PHI <_13(9), &D.857772(10)>
_15 = *_116;
this_29(D)->nColCount = _15;
In *.mergephi1 with -alias-vops the difference (trunk vs. trunk with r260383
reverted) is:
# .MEM_55 = VDEF <.MEM_23>
D.857771 = 1;
...
# .MEM_206 = VDEF <.MEM_55>
- # USE = nonlocal null { D.112965 D.113017 D.857775 D.857777 D.857779 }
(nonlocal, escaped, interposable)
- # CLB = nonlocal null { D.112965 D.113017 D.857775 D.857777 D.857779 }
(nonlocal, escaped, interposable)
+ # USE = nonlocal null { D.112965 D.113017 D.857775 D.857777 D.857779
D.1010617 } (nonlocal, escaped, restrict, interposable)
+ # CLB = nonlocal null { D.112965 D.113017 D.857775 D.857777 D.857779
D.1010617 } (nonlocal, escaped, restrict, interposable)
_129 = rtl_str_toInt32 (_128, 10);
# .MEM_57 = VDEF <.MEM_206>
D.857770 = _129;
if (_129 <= 0)
goto <bb 8>; [34.00%]
else
goto <bb 9>; [66.00%]
<bb 8> :
<bb 9> :
# PT = { D.857770 D.857771 }
# ALIGN = 4, MISALIGN = 0
# _119 = PHI <&D.857770(7), &D.857771(8)>
# VUSE <.MEM_57>
- _12 = *_119;
+ _12 = MEM[(const int &)_119 clique 1 base 0];
# .MEM_59 = VDEF <.MEM_57>
- this_29(D)->nColCount = _12;
+ MEM[(struct ScXMLTableColContext *)this_29(D) clique 1 base 1].nColCount =
_12;
# .MEM_60 = VDEF <.MEM_59>
D.857770 ={v} {CLOBBER};
# .MEM_61 = VDEF <.MEM_60>
D.857771 ={v} {CLOBBER};
# .MEM_62 = VDEF <.MEM_61>
D.857772 = 1024;
- # PT = nonlocal
+ # PT = { D.1010617 } (nonlocal, escaped)
_13 = &this_29(D)->nColCount;
if (_12 > 1024)
goto <bb 10>; [34.00%]
else
goto <bb 11>; [66.00%]
<bb 10> :
<bb 11> :
- # PT = nonlocal { D.857772 }
+ # PT = { D.857772 D.1010617 } (nonlocal, escaped)
# _116 = PHI <_13(9), &D.857772(10)>
# VUSE <.MEM_62>
- _15 = *_116;
+ _15 = MEM[(const int &)_116 clique 1 base 0];
# .MEM_64 = VDEF <.MEM_62>
- this_29(D)->nColCount = _15;
+ MEM[(struct ScXMLTableColContext *)this_29(D) clique 1 base 1].nColCount =
_15;
and DSE1 removes the nColCount store:
<bb 9> :
# _119 = PHI <&D.857770(7), &D.857771(8)>
_12 = *_119;
- this_29(D)->nColCount = _12;
D.857770 ={v} {CLOBBER};
D.857771 ={v} {CLOBBER};
D.857772 = 1024;
...
<bb 11> :
# _116 = PHI <_13(9), &D.857772(10)>
_15 = *_116;
- this_29(D)->nColCount = _15;
+ *this_29(D).nColCount = _15;
D.857772 ={v} {CLOBBER};
goto <bb 18>; [INV]
I've tried to reduce this to:
template<typename _Tp> constexpr inline const _Tp&
min (const _Tp& __a, const _Tp& __b) { if (__b < __a) return __b; return __a; }
template<typename _Tp> constexpr inline const _Tp&
max (const _Tp& __a, const _Tp& __b) { if (__a < __b) return __b; return __a; }
template<typename _Tp, typename _Compare> constexpr inline const _Tp&
min (const _Tp& __a, const _Tp& __b, _Compare __comp) { if (__comp(__b, __a))
return __b; return __a; }
template<typename _Tp, typename _Compare> constexpr inline const _Tp&
max (const _Tp& __a, const _Tp& __b, _Compare __comp) { if (__comp(__a, __b))
return __b; return __a; }
int foo () throw ();
struct S { char pad[80]; int nColCount; S (); };
const signed short m = 1024;
int v;
S::S ()
{
nColCount = 1;
if (v)
{
nColCount = max<int> (foo (), 1);
nColCount = min<int> (nColCount, m);
}
}
but that doesn't reproduce this.
>From gcc-bugs-return-635297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:02:41 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 10:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
CC| |glisse at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Target Milestone|--- |9.0
>From gcc-bugs-return-635298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:05:23 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 10:05:00 -0000
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I can also confirm that building the whole project with original flags and
current GCC trunk is fine.
>From gcc-bugs-return-635299-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:09:05 2019
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
Date: Tue, 26 Feb 2019 10:09:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 26 10:08:29 2019
New Revision: 269206
URL: https://gcc.gnu.org/viewcvs?rev=269206&root=gcc&view=rev
Log:
PR target/89474
* config/i386/i386.c (remove_partial_avx_dependency): Call
df_analyze etc. before creation of the v4sf_const0 pseudo, rather than
after changing possibly many instructions to use that pseudo. Fix up
insertion of v4sf_const0 setter at the start of bb.
* gcc.target/i386/pr89474.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89474.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:16:31 2019
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Subject: [Bug tree-optimization/89479] __restrict
Date: Tue, 26 Feb 2019 10:16:00 -0000
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--- Comment #5 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
(In reply to Richard Biener from comment #4)
> exposing __restrict to the IL).
Is "IL" an acronym for "Intermediate Language"? Remember many bug
posters/readers are not GCC developers and don't know all the lingo.
> To elaborate further to successfully mark a function call
> with clique == 1 and base == 0 we have to prove the pointer marked restrict
> doesn't escape the function through calls
Certainly, calling g() could be just the same as writing to an alias of the x
pointer. But - __restrict is how we guarantee this doesn't happen (or can be
ignored) even when the compiler can't prove that's the case on its own. So I'm
not sure I understand what you're suggesting with your comment. I suppose you
could try and "disprove the __restrict" to give a warning, but other than that
- why not just respect it?
>From gcc-bugs-return-635301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:20:38 2019
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Subject: [Bug target/89502] Inefficient access to stack_guard in TCB
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> x.s: Assembler messages:
> x.s:11: Error: can't encode segment `%fs' with 32-bit address
> x.s:18: Error: can't encode segment `%fs' with 32-bit address
Is this some new warning, since
GNU assembler version 2.31.1-17.fc29
happily assembles
movl %fs:(%edx), %ecx
to:
8: 64 67 8b 0a mov %fs:(%edx),%ecx
Anyway, the following patch should fix this issue:
--cut here--
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index e77653d66a4..67872e1c15d 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -18542,6 +18542,10 @@ ix86_print_operand_address_as (FILE *file, rtx addr,
if (!ADDR_SPACE_GENERIC_P (as))
{
+ /* We can't have 0x67 prefix with segment override. */
+ if (TARGET_64BIT)
+ code = 'q';
+
if (ASSEMBLER_DIALECT == ASM_ATT)
putc ('%', file);
--cut here--
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Subject: [Bug target/89502] Inefficient access to stack_guard in TCB
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--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #1)
> Ever better, we can use UNSPEC_TP to handle it:
>
> movl %fs:24, %ecx
>
> to save a register.
We do, with -O2, but -O1 CSEs the constant into the register for some reason.
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Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 10:25:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the problem is mainly:
MEM[(struct ScXMLTableColContext *)this_29(D) clique 1 base 1].nColCount =
_15;
vs.
_15 = MEM[(const int &)_116 clique 1 base 0];
Both have the same clique, but different base.
std::min<sal_Int32>(nColCount, MAXCOLCOUNT)
returns a reference, and I bet if this argument was explicitly __restrict, that
would be invalid, referencing *this through some other pointer (reference in
this case). this argument is not restrict though, and it can alias
references/pointers within the constructor, e.g.
struct S { int s; S (S &, S *); };
S *foo (S *);
S::S (S &x, S *y)
{
// x.s can't alias this->s
// y->s can't alias this->s
S *p = foo (this);
// p->s can alias this->s
}
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Subject: [Bug target/87007] [8 Regression] 10% slowdown with -march=skylake-avx512
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Bug 87007 depends on bug 89474, which changed state.
Bug 89474 Summary: [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89474
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug target/89474] [9 Regression] ice in df_reg_chain_verify_unmarked, at df-scan.c:3995
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 10:27:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
ScXMLTableColContext::ScXMLTableColContext (struct ScXMLTableColContext * const
this, struct ScXMLImport & rImport, const struct Reference & rAttrList)
{
# PT = null { D.1010617 } (nonlocal, escaped, restrict)
struct ScXMLTableColContext * const this_29(D) = this;
...
<bb 11> :
# PT = { D.857772 D.1010617 } (nonlocal, escaped)
# _116 = PHI <_13(9), &D.857772(10)>
_15 = MEM[(const int &)_116 clique 1 base 0];
the _116 deref shouldn't have gotten base 0 because of
vi = get_varinfo (find (vi->id));
if (bitmap_intersect_p (rvars, vi->solution)
|| (escaped_p && bitmap_bit_p (vi->solution, escaped_id)))
return false;
now I need to debug what goes wrong...
>From gcc-bugs-return-635307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 10:36:42 2019
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
Date: Tue, 26 Feb 2019 10:36:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 26 10:36:05 2019
New Revision: 269207
URL: https://gcc.gnu.org/viewcvs?rev=269207&root=gcc&view=rev
Log:
PR fortran/43210
* trans-array.c (gfc_conv_array_initializer): Use RANGE_EXPR instead
of duplicating the initializer possibly many times.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
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Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 10:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-26
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So what happens is that this points to an aggregate with a lot of fields and
field-sensitive analysis when gathering what are restrict pointed-to's only
looks at the first field. Thus if you'd have
struct this { int x; void *p; };
and
_13 = &this_29(D)->nColCount;
# _116 = PHI <_13(9), &D.857772(10)>
_15 = *_116;
here _13 does not point to the _first_ field (note you need meaningful
fields - aka pointers - for points-to to separate fields fod analysis)
then we miss that _116 also points to the same thing as this_29.
Then you need a plain this_29 based access and a indirect ref to _13
to get things wrong.
struct S { int i; void *p; int j; };
int a;
int foo (struct S * __restrict p, int q)
{
int *x = &p->j;
if (q)
x = &a;
p->j = 1;
*x = 2;
return p->j;
}
shows wrong alias info:
# PT = null { D.1921 } (nonlocal, restrict)
struct S * restrict p_2(D) = p;
...
<bb 4> :
# PT = null { D.1909 D.1921 } (nonlocal, interposable)
# x_1 = PHI <x_3(2), &a(3)>
MEM[(struct S *)p_2(D) clique 1 base 1].j = 1;
MEM[(int *)x_1 clique 1 base 0] = 2;
_9 = MEM[(struct S *)p_2(D) clique 1 base 1].j;
and FRE optimizing the load.
struct S { int i; void *p; int j; };
int a;
int __attribute__((noinline))
foo (struct S * __restrict p, int q)
{
int *x = &p->j;
if (q)
x = &a;
p->j = 1;
*x = 2;
return p->j;
}
int main()
{
struct S s;
if (foo (&s, 0) != 2)
__builtin_abort ();
return 0;
}
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Subject: [Bug tree-optimization/89479] __restrict on a pointer ignored when a function is passed alongside it
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--- Comment #6 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
Thanks to a friendly StackOverflow user, I should also report that (about) the
same code produces the same compiler behavior disparity for proper C:
https://godbolt.org/z/kVYqp8
with the slight modification being `void g(void)` instead of `void g()` in the
function signatures.
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Subject: [Bug target/88469] [7/8 regression] AAPCS/AAPCS64 - Struct with 64-bit bitfield (128-bit on AArch64) may be passed in wrong registers
Date: Tue, 26 Feb 2019 11:00:00 -0000
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--- Comment #13 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to Stefan Ring from comment #12)
> Unfortunately my armv5 device has died in the meantime, so I cannot verify
> my original use case. The behavior is indeed different on armv7. It does not
> trap, even for the original misaligned code. And contrary to x86, where the
> alignment check flag can be changed by user space, this is a privileged
> operation on arm, so I cannot even selectively enable it.
Note that if you have root access on your board you can modify the kernel's
behaviour for various unaligned accesses by changing /proc/cpu/alignment (see
Documentation/arm/mem_alignment in the kernel sources). You might want to try
setting this to 3 to get the kernel to report (but fix up) any misaligned
accesses).
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Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45824
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45824&action=edit
patch I am testing
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 26 11:03:45 2019
New Revision: 269210
URL: https://gcc.gnu.org/viewcvs?rev=269210&root=gcc&view=rev
Log:
2019-02-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/89489
* tree-parloops.c (create_loop_fn): Copy over last_clique.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-parloops.c
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Subject: [Bug tree-optimization/89489] [9 Regression] ICE in gimple_duplicate_bb, at tree-cfg.c:6257
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libstdc++/64132] [7/8/9 Regression] FAIL: 22_locale/numpunct/members/char/3.cc execution test
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64132
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Probably r265165 or r265286
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 26 Feb 2019 11:31:00 -0000
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tnfchris at gcc dot gnu.org
--- Comment #17 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hi,
I'm getting a test failure on master for these new tests
UNRESOLVED: gcc.dg/pr89410-1.c: bad option "-1": must be -exact, -glob,
-regexp, or -- for " dg-warning 8 "msg" "" { target *-*-* } -1 "
is that `-1` correct there?
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Subject: [Bug libstdc++/64132] [7/8/9 Regression] FAIL: 22_locale/numpunct/members/char/3.cc execution test
Date: Tue, 26 Feb 2019 11:32:00 -0000
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--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I suspect Debian had downstream changes to the it_IT.ISO8859-15 locale data, as
was later done in upstream glibc. The original version of the test failed if
it_IT.ISO8859-15 uses thousands separators. The changes in r265165 would have
fixed it, by using a different locale.
The test I put in comment 11 was after that change to use nl_NL, which explains
why it shows no grouping. Mystery solved.
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Subject: [Bug target/88469] [7/8 regression] AAPCS/AAPCS64 - Struct with 64-bit bitfield (128-bit on AArch64) may be passed in wrong registers
Date: Tue, 26 Feb 2019 11:54:00 -0000
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--- Comment #14 from Stefan Ring <stefanrin at gmail dot com> ---
(In reply to Richard Earnshaw from comment #13)
> Note that if you have root access on your board you can modify the kernel's
> behaviour for various unaligned accesses by changing /proc/cpu/alignment
> (see Documentation/arm/mem_alignment in the kernel sources). You might want
> to try setting this to 3 to get the kernel to report (but fix up) any
> misaligned accesses).
I know that, but armv7 does not trap at all for misaligned ldrd, at the
hardware level. It does trap if it’s not even 32bit-aligned, but that’s a
different matter.
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Subject: [Bug debug/89498] [8/9 Regression] ICE in AT_loc_list, at dwarf2out.c:4871
Date: Tue, 26 Feb 2019 12:03:00 -0000
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--- Comment #2 from G. Steinmetz <gscfq@t-online.de> ---
Hm, on my environment it's not necessary to include <math.h>,
can therefore be omitted. But that case was only exemplary.
You can try to catch the other ones, e.g. simply looping over
###
export LANG=C
cd gcc/testsuite
for i in */*.[cC] */*/*.[cC] */*/*/*.[cC]
do
timeout 2.0 gcc-9-20190224 -c $i -O2 -gdwarf-5 -gsplit-dwarf
done > _list 2>&1
grep -i 'internal compiler' _list
grep -i 'internal compiler' _list | wc -l
###
Or alternatively one combination out of :
-O2 -gdwarf -gsplit-dwarf
-O2 -gdwarf-5 -gsplit-dwarf
-O2 -gdwarf-4 -gsplit-dwarf
-O2 -g -gdwarf-5 -gsplit-dwarf
It would be very astonishing if nothing comes out there ...
On my plain vanilla test PC above loop finds 19341 cases with ICE :
$ grep -i 'internal compiler' _list | wc -l
19341
Including another ICE group (closely related or not)
with 2327 failing cases, e.g. :
$ gcc-9-20190224 -c gcc.dg/align-2.c -O2 -gdwarf-5 -gsplit-dwarf
gcc.dg/align-2.c:6:1: internal compiler error: Segmentation fault
6 | extern char compile_time_assert[__alignof__(v4) == sizeof(float)*4 ? 1
: -1];
| ^~~~~~
0xa89c1f crash_signal
../../gcc/toplev.c:326
0x797b34 void hash_table<addr_hasher, xcallocator>::traverse_noresize<unsigned
int*, &(count_index_addrs(addr_table_entry**, unsigned int*))>(unsigned int*)
../../gcc/hash-table.h:965
0x797b34 dwarf2out_finish
../../gcc/dwarf2out.c:31551
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Tue, 26 Feb 2019 12:09:00 -0000
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--- Comment #20 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrey Drobyshev from comment #18)
> (In reply to Martin Liška from comment #16)
> > Created attachment 45797 [details]
> > Patch candidate
> >
> > Patch candidate where I made some refactoring and come up with tests.
> > Works fine on x86_64, on ppc64le there are some issues with
> > -fsection-anchors, but that would be possible to resolve.
> >
> > Please let me know if you're fine with that and we can submit that to
> > gcc-patches ML?
>
> Looks good to me. By not setting TREE_PUBLIC flag we give our dummy globals
> internal linkage (as if they were static), thus allowing linker to mix
> multiple TUs with these dummies.
One can't use TREE_PUBLIC because:
$ cat a.c
int a = 2;
$ cat b.c
int b = 3;
$ gcc a.c b.c -fsanitize=address
/usr/bin/ld: /tmp/ccSj1xmO.o:(.data+0x0): multiple definition of
`__asan_data_dummy_global'; /tmp/ccsHDJug.o:(.data+0x0): first defined here
/usr/bin/ld: /usr/lib/../lib64/crt1.o: in function `_start':
/home/abuild/rpmbuild/BUILD/glibc-2.29/csu/../sysdeps/x86_64/start.S:104:
undefined reference to `main'
collect2: error: ld returned 1 exit status
>
> However, this way number of dummy globals in the resulting executable is
> proportional to the number of TUs, and each of them occupies additional 64b
> for redzone (due to alignment) + its poisoned metadata (struct
> __asan_global, also 64b on x86_64). I guess that's what was meant by
> "wasting more memory" in
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1. I'm not sure, are we
> ok with such a waste?
Yes, I hope it's a reasonable trade off.
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Tue, 26 Feb 2019 12:11:00 -0000
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--- Comment #21 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for the test-case.
>
> So I guess we still have to detect relocations. I cannot see limitations
> coming particularly from approach #2 from
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c1. We just need to pass
> the right reloc value to categorize_decl_for_section().
Can you please tweak the patch to emit these?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89506] New: [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
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Bug ID: 89506
Summary: [7/8/9 Regression] ICE: in decompose, at rtl.h:2266
with -Og -g
Product: gcc
Version: 9.0
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Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 45825
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45825&action=edit
reduced testcase
Compiler output:
$ armv7a-hardfloat-linux-gnueabi-gcc -Og -g testcase.c
during RTL pass: vartrack
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: in decompose, at rtl.h:2266
10 | }
| ^
0xa54130 wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long*,
unsigned int, std::pair<rtx_def*, machine_mode> const&)
/repo/gcc-trunk/gcc/rtl.h:2264
0xdbc19c wide_int_ref_storage<false,
false>::wide_int_ref_storage<std::pair<rtx_def*, machine_mode>
>(std::pair<rtx_def*, machine_mode> const&, unsigned int)
/repo/gcc-trunk/gcc/wide-int.h:1013
0xdbc19c generic_wide_int<wide_int_ref_storage<false, false>
>::generic_wide_int<std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, unsigned int)
/repo/gcc-trunk/gcc/wide-int.h:788
0xdbc19c wi::binary_traits<std::pair<rtx_def*, machine_mode>,
std::pair<rtx_def*, machine_mode>, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type, wi::int_traits<std::pair<rtx_def*,
machine_mode> >::precision_type>::result_type wi::add<std::pair<rtx_def*,
machine_mode>, std::pair<rtx_def*, machine_mode> >(std::pair<rtx_def*,
machine_mode> const&, std::pair<rtx_def*, machine_mode> const&)
/repo/gcc-trunk/gcc/wide-int.h:2403
0xdbc19c simplify_const_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
/repo/gcc-trunk/gcc/simplify-rtx.c:4286
0xdbb693 simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/simplify-rtx.c:2164
0xdcc86e simplify_plus_minus
/repo/gcc-trunk/gcc/simplify-rtx.c:4686
0xdb6277 simplify_binary_operation_1
/repo/gcc-trunk/gcc/simplify-rtx.c:2388
0xdbb6c5 simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
/repo/gcc-trunk/gcc/simplify-rtx.c:2167
0x9b0946 cselib_expand_value_rtx_1
/repo/gcc-trunk/gcc/cselib.c:1856
0x9b1eae cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
/repo/gcc-trunk/gcc/cselib.c:1562
0x10b6ea0 vt_expand_var_loc_chain
/repo/gcc-trunk/gcc/var-tracking.c:8384
0x10b7538 vt_expand_loc_callback
/repo/gcc-trunk/gcc/var-tracking.c:8547
0x9b087a cselib_expand_value_rtx_1
/repo/gcc-trunk/gcc/cselib.c:1716
0x9b0515 cselib_expand_value_rtx_1
/repo/gcc-trunk/gcc/cselib.c:1754
0x9b1eae cselib_expand_value_rtx_cb(rtx_def*, bitmap_head*, int, rtx_def*
(*)(rtx_def*, bitmap_head*, int, void*), void*)
/repo/gcc-trunk/gcc/cselib.c:1562
0x10b6ea0 vt_expand_var_loc_chain
/repo/gcc-trunk/gcc/var-tracking.c:8384
0x10b7538 vt_expand_loc_callback
/repo/gcc-trunk/gcc/var-tracking.c:8547
0x9b087a cselib_expand_value_rtx_1
/repo/gcc-trunk/gcc/cselib.c:1716
0x9b0515 cselib_expand_value_rtx_1
/repo/gcc-trunk/gcc/cselib.c:1754
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-635322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 12:17:03 2019
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Tue, 26 Feb 2019 12:17:00 -0000
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--- Comment #6 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
(In reply to Richard Biener from comment #5)
> So it looks like stage1 gcc is miscompiled somehow. I wonder if you can
> avoid
> setting CFLAGS et al?
I just added CFLAGS+=-O0 and CXXFLAGS+=-O0. For now, the build is ongoing (I'm
building GCC 7 first, as it had the most verbose errors), but I think it's
already past the stage where it crashed. I will leave it open until all
versions are built (7, 8, 9)
Thanks!
>From gcc-bugs-return-635323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 12:38:37 2019
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Subject: [Bug fortran/67542] ICE in gfc_emit_parameter_debug_info, at fortran/trans-decl.c:4947 and :4945
Date: Tue, 26 Feb 2019 12:38:00 -0000
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I cannot get any ICE with the options and revisions I have tried.
>From gcc-bugs-return-635324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 12:49:00 2019
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Subject: [Bug fortran/79864] Implicit type conversion on assignment of unallocated array to unallocated array variable segfaults.
Date: Tue, 26 Feb 2019 12:49:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Compiling the test with '-Wall -Wextra -fcheck=all -Ofast -m32 -fsanitize=address'
> gives ...
I no longer see the warnings with 8.2.0 and trunk (9.0).
From pr79863 comment 5, the code is invalid.
>From gcc-bugs-return-635325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 12:50:27 2019
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Subject: [Bug c++/70644] Warn about implicit conversion of 'this' to pointer to virtual base class during construction
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
-Wbase-conversion (C++, Objective-C++ only)
Warn when a pointer/reference to an object is converted to a
pointer/reference to a base class of the object and any intermediate
base classes have not begun construction yet.
I think the [basic.life] reference I gave was incorrect. For an object under
construction the correct reference is [class.cdtor]. I'm no longer sure if the
original testcase is actually undefined, but both f(this) calls in this version
require an undefined conversion to B* before the D base class has begun
construction:
struct B { B(int) { } };
struct D : virtual B { D(int i) : B(i) { } };
int foo(B*) { return 0; }
struct X : D {
X() : B(foo(this)), D(foo(this)) { }
};
int main() {
X x;
}
The problem isn't specific to virtual bases either, this is also undefined
because it converts X* to B* before construction of the D base has begun:
struct B { };
struct D : B { D(int i) { } };
int foo(B*) { return 0; }
struct X : D {
X() : D(foo(this)) { }
};
int main() {
X x;
}
This testcase is based on the one in [class.cdtor] and doesn't give a warning
or ubsan error for the undefined E* to A* conversion:
struct A { };
struct B : virtual A { };
struct C : B { };
struct D : virtual A { D(A*); };
struct X { X(A*); };
struct E : C, D, X {
E()
: D(this), // undefined: upcast from E* to A* might use path E* → D* → A*
// but D is not constructed
// “D((C*)this)†would be defined:
// E* → C* is defined because E() has started,
// and C* → A* is defined because C is fully constructed
X(this) // defined: upon construction of X, C/B/D/A sublattice is
// fully constructed
{ }
};
int main()
{
E e;
}
D::D(A*) { }
X::X(A*) { }
>From gcc-bugs-return-635326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:14:36 2019
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Subject: [Bug c++/89507] New: bogus "size of array exceeds maximum object size"
Date: Tue, 26 Feb 2019 13:14:00 -0000
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Bug ID: 89507
Summary: bogus "size of array exceeds maximum object size"
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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CC: caolanm at redhat dot com, msebor at gcc dot gnu.org
Target Milestone: ---
With current trunk (towards GCC 9),
> $ cat test.cc
> unsigned char const n = 128;
> int * p = new int[n];
>
> $ g++ -c test.cc
> test.cc:2:20: error: size ‘128’ of array exceeds maximum object size ‘9223372036854775807’
> 2 | int * p = new int[n];
> | ^
This looks like a regression introduced with
<https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=268774> "PR c++/87996 -
size of array is negative error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX".
(This breaks the build of LibreOffice,
> [CXX] i18npool/source/characterclassification/cclass_unicode_parser.cxx
> i18npool/source/characterclassification/cclass_unicode_parser.cxx: In member function ‘void i18npool::cclass_Unicode::initParserTable(const com::sun::star::lang::Locale&, sal_Int32, const rtl::OUString&, sal_Int32, const rtl::OUString&)’:
> i18npool/source/characterclassification/cclass_unicode_parser.cxx:417:45: error: size ‘128’ of array exceeds maximum object size ‘9223372036854775807’
> 417 | pTable.reset(new ParserFlags[nDefCnt]);
> | ^
.)
>From gcc-bugs-return-635327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:21:19 2019
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Subject: [Bug c++/67650] undef reference with -fdevirtualize
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2018-05-03 00:00:00 |2019-2-26
--- Comment #34 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Honza, could you take another look at this reduced version please?
__attribute__((weak)) void f() { }
template <typename T>
struct Base
{
virtual void virt() = 0;
void do_virt() { virt(); }
};
template <typename T>
struct Derived : Base<T>
{
void virt() {}
};
template <typename T>
struct Wrap
{
T* p = nullptr;
virtual void indirect_virt()
{
#ifdef FIX
p->virt(); // OK
#else
p->do_virt(); // link error
#endif
}
};
template <const char*>
struct Template
{
};
constexpr char str[] = "";
struct I
{
I() { f(); }
Wrap<Derived<Template<str>>> l;
};
int main(){new I();}
This is valid C++, but when compiled with -O1 -fdevirtualize it fails with:
l.cc:13:8: warning: ‘void Derived<T>::virt() [with T = Template<(& str)>]’ used
but never defined
void virt() {}
^~~~
/usr/bin/ld: /tmp/ccYAFtTY.o: in function `Wrap<Derived<Template<&str> >
>::indirect_virt()':
l.cc:(.text+0x57): undefined reference to `Derived<Template<&str> >::virt()'
collect2: error: ld returned 1 exit status
If compiled with -DFIX it links OK.
Even though the Template<(&str)> template argument is completely unused, it
compiles fine if Derived<int> is used instead, or
Derived<AnotherTemplate<int>>. It only fails when using a template that has a
pointer for its template parameter.
>From gcc-bugs-return-635328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:21:43 2019
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Subject: [Bug target/89508] New: gcc snapshot 9.0.1 20190127 generates invalid assembler options on aarch64-unknown-linux-gnu with -march=native
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89508
Bug ID: 89508
Summary: gcc snapshot 9.0.1 20190127 generates invalid
assembler options on aarch64-unknown-linux-gnu with
-march=native
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: andrewm.roberts at sky dot com
Target Milestone: ---
The latest gcc 9 snapshot (gcc version 9.0.1 20190127 (experimental)) fails
to compile files (due to assembler option errors) when used with -march=native
on aarch64-unknown-linux-gnu
The gcc-8.3.0 release built with the same options accepts -march=native and
generates options the assembler can accept.
If -march=native is no longer accepted, it should generate a warning or error
as appropriate, or be silently ignored.
/usr/local/gcc/bin/gcc - is the gcc 9 snapshot
/usr/local/gcc-8.3.0/bin/gcc - is the gcc 8.3.0 release
All testing done an a Raspberry Pi 3B (BCM2837), ARM Cortex A53, running 64 bit
ArchLinux ARM:
uname -a
Linux alarm 4.20.11-1-ARCH #1 SMP Wed Feb 20 19:23:26 MST 2019 aarch64
GNU/Linux
The system binutils is used (2.31.1)
as --version
GNU assembler (GNU Binutils) 2.31.1
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `aarch64-unknown-linux-gnu'.
Output of gcc-9.0.1 --help=target with -march=native:
(the guessed -march line is not accepted by the assembler)
/usr/local/gcc/bin/gcc -march=native -Q --help=target
The following options are target specific:
-mabi= lp64
-march=
armv8-a+crc+profile+rng+memtag+sb+ssbs+predres
-mbig-endian [disabled]
-mbionic [disabled]
-mbranch-protection=
-mcmodel= small
-mcpu= generic
-mfix-cortex-a53-835769 [enabled]
-mfix-cortex-a53-843419 [enabled]
-mgeneral-regs-only [disabled]
-mglibc [enabled]
-mlittle-endian [enabled]
-mlow-precision-div [disabled]
-mlow-precision-recip-sqrt [disabled]
-mlow-precision-sqrt [disabled]
-mmusl [disabled]
-momit-leaf-frame-pointer [enabled]
-moverride=<string>
-mpc-relative-literal-loads [enabled]
-msign-return-address= none
-mstack-protector-guard-offset=
-mstack-protector-guard-reg=
-mstack-protector-guard= global
-mstrict-align [disabled]
-msve-vector-bits=<number> scalable
-mtls-dialect= desc
-mtls-size= 24
-mtrack-speculation [disabled]
-mtune= generic
-muclibc [disabled]
-mverbose-cost-dump [disabled]
Known AArch64 ABIs (for use with the -mabi= option):
ilp32 lp64
Supported AArch64 return address signing scope (for use with
-msign-return-address= option):
all non-leaf none
The code model option names for -mcmodel:
large small tiny
Valid arguments to -mstack-protector-guard=:
global sysreg
The possible SVE vector lengths:
1024 128 2048 256 512 scalable
The possible TLS dialects:
desc trad
Assembler messages:
Error: unknown architectural extension `rng+memtag+sb+ssbs+predres'
Error: unrecognized option
-march=armv8-a+crc+profile+rng+memtag+sb+ssbs+predres
gcc-9.0.1 build options:
/usr/local/gcc/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-9.0.0/libexec/gcc/aarch64-unknown-linux-gnu/9.0.1/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc-9.0.0/configure --prefix=/usr/local/gcc-9.0.0
--program-suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-gnu-indirect-function --enable-lto --with-isl
--enable-languages=c,c++,fortran,lto --disable-libgcj --enable-clocale=gnu
--disable-libstdcxx-pch --enable-install-libiberty --disable-multilib
--enable-shared --with-arch-directory=aarch64 --enable-multiarch
--disable-libssp --enable-default-pie --enable-default-ssp
--host=aarch64-unknown-linux-gnu --build=aarch64-unknown-linux-gnu
--with-arch=armv8-a --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190127 (experimental) (GCC)
Output of gcc-8.3.0 --help=target with -march=native:
/usr/local/gcc-8.3.0/bin/gcc -march=native -Q --help=target
The following options are target specific:
-mabi=ABI lp64
-march=ARCH armv8-a+crc
-mbig-endian [disabled]
-mbionic [disabled]
-mcmodel= small
-mcpu=CPU
-mfix-cortex-a53-835769 [enabled]
-mfix-cortex-a53-843419 [enabled]
-mgeneral-regs-only [disabled]
-mglibc [enabled]
-mlittle-endian [enabled]
-mmusl [disabled]
-momit-leaf-frame-pointer [enabled]
-moverride=STRING
-mpc-relative-literal-loads [enabled]
-msign-return-address= none
-mstrict-align [disabled]
-msve-vector-bits=N scalable
-mtls-dialect= desc
-mtls-size= 24
-mtune=CPU
-muclibc [disabled]
Known AArch64 ABIs (for use with the -mabi= option):
ilp32 lp64
Supported AArch64 return address signing scope (for use with
-msign-return-address= option):
all non-leaf none
The code model option names for -mcmodel:
large small tiny
The possible SVE vector lengths:
1024 128 2048 256 512 scalable
The possible TLS dialects:
desc trad
gcc-8.3.0 build options:
/usr/local/gcc-8.3.0/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/local/gcc-8.3.0/bin/gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-8.3.0/libexec/gcc/aarch64-unknown-linux-gnu/8.3.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc-8.3.0/configure --prefix=/usr/local/gcc-8.3.0
--program-suffix= --disable-werror --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-gnu-indirect-function --enable-lto --with-isl
--enable-languages=c,c++,fortran,lto --disable-libgcj --enable-clocale=gnu
--disable-libstdcxx-pch --enable-install-libiberty --disable-multilib
--enable-shared --with-arch-directory=aarch64 --enable-multiarch
--disable-libssp --enable-default-pie --enable-default-ssp
--host=aarch64-unknown-linux-gnu --build=aarch64-unknown-linux-gnu
--with-arch=armv8-a --disable-bootstrap
Thread model: posix
gcc version 8.3.0 (GCC)
Sample trivial test program gcc-9.0.1 WITHOUT --march=native:
echo "int main(void) { return 0; }" | /usr/local/gcc/bin/gcc -c -x c -o tmp.o -
# success
Sample trivial test program gcc-9.0.1 WITH --march=native:
echo "int main(void) { return 0; }" | /usr/local/gcc/bin/gcc -march=native -c
-x c -o tmp.o -
Assembler messages:
Error: unknown architectural extension `rng+memtag+sb+ssbs+predres'
Error: unrecognized option
-march=armv8-a+crc+profile+rng+memtag+sb+ssbs+predres
Sample trivial test program gcc-8.3.0 WITH --march=native:
echo "int main(void) { return 0; }" | /usr/local/gcc-8.3.0/bin/gcc
-march=native -c -x c -o tmp.o -
# success
>From gcc-bugs-return-635329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:25:12 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/67650] undef reference with -fdevirtualize
Date: Tue, 26 Feb 2019 13:24:00 -0000
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--- Comment #35 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #34)
> __attribute__((weak)) void f() { }
This is here so that I() { f(); } doesn't get inlined (because the compiler
can't know what f() does, since it might get replaced during linking). Without
a call to some non-inlinable function it links OK. For the version in comment
29 the std::string constructor and destructor served that purpose, because
they're defined in libstdc++.so and not inlined.
>From gcc-bugs-return-635330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:32:47 2019
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Subject: [Bug go/89171] FAIL: go/build
Date: Tue, 26 Feb 2019 13:32:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
How can I build and run a single libgo test?
>From gcc-bugs-return-635331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:33:02 2019
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89430] A missing ifcvt optimization to generate csel
Date: Tue, 26 Feb 2019 13:33:00 -0000
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--- Comment #8 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
It is related to https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02998.html
Bernd's patch is an overkill.
>From gcc-bugs-return-635332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:43:40 2019
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Subject: [Bug target/89502] Inefficient access to stack_guard in TCB
Date: Tue, 26 Feb 2019 13:43:00 -0000
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #3)
> (In reply to H.J. Lu from comment #0)
> > x.s: Assembler messages:
> > x.s:11: Error: can't encode segment `%fs' with 32-bit address
> > x.s:18: Error: can't encode segment `%fs' with 32-bit address
>
> Is this some new warning, since
Yes. it will be in binutils 2.33.
> GNU assembler version 2.31.1-17.fc29
>
> happily assembles
>
> movl %fs:(%edx), %ecx
>
> to:
>
> 8: 64 67 8b 0a mov %fs:(%edx),%ecx
>
> Anyway, the following patch should fix this issue:
>
> --cut here--
> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> index e77653d66a4..67872e1c15d 100644
> --- a/gcc/config/i386/i386.c
> +++ b/gcc/config/i386/i386.c
> @@ -18542,6 +18542,10 @@ ix86_print_operand_address_as (FILE *file, rtx addr,
>
> if (!ADDR_SPACE_GENERIC_P (as))
> {
> + /* We can't have 0x67 prefix with segment override. */
> + if (TARGET_64BIT)
> + code = 'q';
> +
> if (ASSEMBLER_DIALECT == ASM_ATT)
> putc ('%', file);
>
> --cut here--
I think we should avoid %fs:(%edx) address. Is that possible to generate
%fs:24 even at -O0? Glibc can do it at -O0:
[hjl@gnu-cfl-1 gcc]$ cat x.i
int
foo (void)
{
int i;
asm volatile ("movl %%fs:%P1, %0" : "=r" (i) : "i" (24));
return i;
}
[hjl@gnu-cfl-1 gcc]$ gcc -S -O0 x.i
[hjl@gnu-cfl-1 gcc]$ cat x.s
.file "x.i"
.text
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
#APP
# 5 "x.i" 1
movl %fs:24, %eax
# 0 "" 2
#NO_APP
movl %eax, -4(%rbp)
movl -4(%rbp), %eax
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (GNU) 8.3.1 20190223 (Red Hat 8.3.1-2)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-cfl-1 gcc]$
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Tue, 26 Feb 2019 13:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |jakub at gcc dot gnu.org
Component|rtl-optimization |target
Target Milestone|--- |7.5
Ever confirmed|0 |1
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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89508] gcc snapshot 9.0.1 20190127 generates invalid assembler options on aarch64-unknown-linux-gnu with -march=native
Date: Tue, 26 Feb 2019 13:47:00 -0000
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |tnfchris at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Marking as a dupe of PR target/88530.
This will be fixed by https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00381.html
once it's committed.
Thanks!
*** This bug has been marked as a duplicate of bug 88530 ***
>From gcc-bugs-return-635335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:47:13 2019
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Subject: [Bug target/88530] [8/9 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
Date: Tue, 26 Feb 2019 13:47:00 -0000
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |andrewm.roberts at sky dot com
--- Comment #4 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
*** Bug 89508 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:49:59 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Tue, 26 Feb 2019 13:49:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45826
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45826&action=edit
gcc9-pr89506.patch
Untested fix.
>From gcc-bugs-return-635337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:51:12 2019
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Subject: [Bug go/89171] FAIL: go/build
Date: Tue, 26 Feb 2019 13:51:00 -0000
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--- Comment #4 from Ian Lance Taylor <ian at airs dot com> ---
To run, say, just the go/build test, cd to the libgo build directory and run
"make go/build/check". To keep the test binary around, run "make
GOTESTFLAGS=--keep go/build/check". That will leave the test binary (and other
stuff) in the directory gotestNNNNN/test. In that directory you can run
"LD_LIBRARY_PATH=../../.libs ./a.out -test.short". That executable also takes
other options, like "-test.run=TestDependencies" to run just the
TestDependencies test.
>From gcc-bugs-return-635338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 13:58:52 2019
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Subject: [Bug target/89502] Inefficient access to stack_guard in TCB
Date: Tue, 26 Feb 2019 13:58:00 -0000
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--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #5)
> I think we should avoid %fs:(%edx) address. Is that possible to generate
It is what middle-end expands to, so nothing much that we can do here.
>From gcc-bugs-return-635339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 14:01:04 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 26 Feb 2019 14:01:00 -0000
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--- Comment #18 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Tamar Christina from comment #17)
> Hi,
>
> I'm getting a test failure on master for these new tests
>
> UNRESOLVED: gcc.dg/pr89410-1.c: bad option "-1": must be -exact, -glob,
> -regexp, or -- for " dg-warning 8 "msg" "" { target *-*-* } -1 "
>
> is that `-1` correct there?
Sorry about this.
It's meant to be expressing a line number of "-1", but it looks like on your
system that DejaGnu/Tcl is picking that up as an option to a regexp.
Works for me (on x86_64-pc-linux-gnu) with the following:
dejagnu-1.5.2-1.fc20.noarch
expect-5.45-10.fc20.x86_64
tcl-8.5.14-1.fc20.x86_64
where I get:
PASS: gcc.dg/pr89410-1.c (test for warnings, line -1)
PASS: gcc.dg/pr89410-2.c (test for warnings, line -1)
for such directives.
>From gcc-bugs-return-635340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 14:03:11 2019
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89479] __restrict on a pointer ignored when a function is passed alongside it
Date: Tue, 26 Feb 2019 14:03:00 -0000
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--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 26 Feb 2019, eyalroz at technion dot ac.il wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89479
>
> --- Comment #5 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
> (In reply to Richard Biener from comment #4)
> > exposing __restrict to the IL).
>
> Is "IL" an acronym for "Intermediate Language"? Remember many bug
> posters/readers are not GCC developers and don't know all the lingo.
Yes.
> > To elaborate further to successfully mark a function call
> > with clique == 1 and base == 0 we have to prove the pointer marked restrict
> > doesn't escape the function through calls
>
> Certainly, calling g() could be just the same as writing to an alias of the x
> pointer. But - __restrict is how we guarantee this doesn't happen (or can be
> ignored) even when the compiler can't prove that's the case on its own. So I'm
> not sure I understand what you're suggesting with your comment. I suppose you
> could try and "disprove the __restrict" to give a warning, but other than that
> - why not just respect it?
Well, "respecting" it means encoding it in the intermediate language
which we don't at the moment for calls.
>From gcc-bugs-return-635341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 14:08:41 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
Ever confirmed|0 |1
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'm confirming this as a bug. If we claim to support the extension we should
make it behave sensibly, and we need to fix it for C++2a anyway.
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Subject: [Bug tree-optimization/89505] [9 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 14:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89505
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 26 14:09:19 2019
New Revision: 269212
URL: https://gcc.gnu.org/viewcvs?rev=269212&root=gcc&view=rev
Log:
2019-02-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/89505
* tree-ssa-structalias.c (compute_dependence_clique): Make sure
to handle restrict pointed-to vars with multiple subvars
correctly.
* gcc.dg/torture/pr89505.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89505.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-structalias.c
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Subject: [Bug tree-optimization/89505] [8/7 Regression] LibreOffice miscompilation starting with r260383
Date: Tue, 26 Feb 2019 14:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P1 |P2
Known to work| |9.0
Target Milestone|9.0 |7.5
Summary|[9 Regression] LibreOffice |[8/7 Regression]
|miscompilation starting |LibreOffice miscompilation
|with r260383 |starting with r260383
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar, the reduced testcase also fails on branches.
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Subject: [Bug tree-optimization/89509] New: restrict doesnt work with subfield accesses
Date: Tue, 26 Feb 2019 14:13:00 -0000
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Bug ID: 89509
Summary: restrict doesnt work with subfield accesses
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
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struct S { int i; void *p; int j; };
int
foo (struct S * __restrict p, int *q, int flag)
{
int *x = &p->j;
if (flag)
x = &p->i;
*q = 1;
*x = 2;
return *q;
}
Is not optimized to return 1. This is the missed-optimization part of
PR89505.
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Subject: [Bug tree-optimization/89509] restrict doesnt work with subfield accesses
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-26
Blocks| |49774
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I have a patch (for GCC 10).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49774
[Bug 49774] [meta-bug] restrict qualification aliasing issues
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, shall we never try ck_list conversion for CONSTRUCTORs with any designators
(while for -std=c++2a we'll complain if there is a mix of designated
initializer clauses and non-designated initializ clauses, I think we don't
diagnose that earlier, so maybe we need to cache it in some CONSTRUCTOR flag?),
or never any conversion but ck_aggr?
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Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 26 Feb 2019 14:22:00 -0000
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--- Comment #19 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hmm we're running it on
Tcl: 8.5
Expect: 5.45
Dejagnu: 1.5.1
So I think those are about the same..
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Subject: [Bug c++/89481] constexpr function allows writing one active union member and reading another
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 26 14:37:39 2019
New Revision: 269213
URL: https://gcc.gnu.org/viewcvs?rev=269213&root=gcc&view=rev
Log:
PR c++/89481
* constexpr.c (cxx_eval_store_expression): When changing active union
member, set no_zero_init.
* g++.dg/cpp1y/constexpr-89481.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-89481.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89481] constexpr function allows writing one active union member and reading another
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for GCC 9+.
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From: "ian at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
Date: Tue, 26 Feb 2019 14:47:00 -0000
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--- Comment #14 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Tue Feb 26 14:46:56 2019
New Revision: 269214
URL: https://gcc.gnu.org/viewcvs?rev=269214&root=gcc&view=rev
Log:
PR go/86535
runtime: always declare nanotime in Go
For libgo it's always defined in C.
Updates https://gcc.gnu.org/PR86535
Reviewed-on: https://go-review.googlesource.com/c/163743
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/runtime/stubs3.go
>From gcc-bugs-return-635352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 14:51:38 2019
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Subject: [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
Date: Tue, 26 Feb 2019 14:51:00 -0000
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--- Comment #15 from Ian Lance Taylor <ian at airs dot com> ---
I committed a patch that should fix the nanotime problem.
Some of the other issues you describe will most likely require a fix in the
libgo/mkrsysinfo.sh script, which generates the file runtime_sysinfo.go. For
example, that is likely the problem with _CTL_HW and _HW_PAGESIZE.
For sysctl we'll need a declaration with a //extern comment.
I'm happy to advise but I don't realistically have the time to do the work
myself.
>From gcc-bugs-return-635353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 15:21:24 2019
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Received: (qmail 102690 invoked by uid 48); 26 Feb 2019 15:21:19 -0000
From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Tue, 26 Feb 2019 15:21:00 -0000
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Right. So when dealing with double-precision values you should use the %P
output modifier like so:
double my_double = 1.5;
__asm__ (
"vmov.f64 d0, 1.0;"
"vadd.f64 %P[my_double], %P[my_double], d0;"
: [my_double] "+w" (my_double)
:
: "d0"
);
This will print the right D-form of the VFP register allocated.
The documentation for this could, admittedly be improved
(https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html). I believe someone is
working on that currently.
>From gcc-bugs-return-635354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 15:49:47 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Tue, 26 Feb 2019 15:49:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think there is a serious flaw that the section anchor infrastructure is used
at all for the SECTION_MERGE sections, one really must not use any kind of
section anchors for those sections, there is no guarantees that the layout made
by the compiler will match what the linker will do in the end (between
different objects in the section that is, within a single object it has to
stay).
If that isn't done and we for some strange reason must still go through the
block stuff, I think we should do for something like following, where we'll
account for the artificially added trailing zeros.
--- gcc/varasm.c.jj 2019-02-22 09:30:19.133180850 +0100
+++ gcc/varasm.c 2019-02-26 16:42:11.699848053 +0100
@@ -7452,7 +7452,7 @@ place_block_symbol (rtx symbol)
struct constant_descriptor_rtx *desc;
unsigned int alignment;
struct object_block *block;
- tree decl;
+ tree decl = NULL_TREE;
gcc_assert (SYMBOL_REF_BLOCK (symbol));
if (SYMBOL_REF_BLOCK_OFFSET (symbol) >= 0)
@@ -7511,6 +7511,20 @@ place_block_symbol (rtx symbol)
/* Calculate the object's offset from the start of the block. */
block = SYMBOL_REF_BLOCK (symbol);
+ if ((block->sect->common.flags & SECTION_MERGE)
+ && (block->sect->common.flags & SECTION_STRINGS)
+ && decl
+ && DECL_INITIAL (decl)
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST)
+ {
+ tree str = DECL_INITIAL (decl);
+ unsigned HOST_WIDE_INT thissize = TREE_STRING_LENGTH (str);
+ if ((thissize == 0
+ || TREE_STRING_POINTER (str) [thissize - 1] != '\0')
+ && size == thissize)
+ size++;
+ }
+
mask = alignment / BITS_PER_UNIT - 1;
offset = (block->size + mask) & ~mask;
SYMBOL_REF_BLOCK_OFFSET (symbol) = offset;
@@ -7639,6 +7653,8 @@ output_object_block (struct object_block
/* Output the objects themselves. */
offset = 0;
+ bool merge_strings = ((block->sect->common.flags & SECTION_MERGE)
+ && (block->sect->common.flags & SECTION_STRINGS));
FOR_EACH_VEC_ELT (*block->objects, i, symbol)
{
/* Move to the object's offset, padding with zeros if necessary. */
@@ -7657,9 +7673,18 @@ output_object_block (struct object_block
HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
assemble_constant_contents (DECL_INITIAL (decl), XSTR (symbol, 0),
- DECL_ALIGN (decl), false);
+ DECL_ALIGN (decl), merge_strings);
size = get_constant_size (DECL_INITIAL (decl));
+ if (merge_strings
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST)
+ {
+ tree str = DECL_INITIAL (decl);
+ HOST_WIDE_INT thissize = TREE_STRING_LENGTH (str);
+ if (thissize == 0
+ || TREE_STRING_POINTER (str) [thissize - 1] != '\0')
+ size = MAX (size, thissize + 1);
+ }
offset += size;
if ((flag_sanitize & SANITIZE_ADDRESS)
&& TREE_CODE (DECL_INITIAL (decl)) == STRING_CST
@@ -7674,8 +7699,18 @@ output_object_block (struct object_block
{
HOST_WIDE_INT size;
decl = SYMBOL_REF_DECL (symbol);
- assemble_variable_contents (decl, XSTR (symbol, 0), false, false);
+ assemble_variable_contents (decl, XSTR (symbol, 0), false,
+ merge_strings);
size = tree_to_uhwi (DECL_SIZE_UNIT (decl));
+ if (merge_strings
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST)
+ {
+ tree str = DECL_INITIAL (decl);
+ HOST_WIDE_INT thissize = TREE_STRING_LENGTH (str);
+ if (thissize == 0
+ || TREE_STRING_POINTER (str) [thissize - 1] != '\0')
+ size = MAX (size, thissize + 1);
+ }
offset += size;
if ((flag_sanitize & SANITIZE_ADDRESS)
&& asan_protect_global (decl))
>From gcc-bugs-return-635355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:11:30 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
Date: Tue, 26 Feb 2019 16:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Priority|P3 |P1
Blocks| |87996
Target Milestone|--- |9.0
Summary|bogus "size of array |[9 Regression] bogus "size
|exceeds maximum object |of array exceeds maximum
|size" |object size"
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87996
[Bug 87996] [8 Regression] "size of array is negative" error when SIZE_MAX/2 <
sizeof(array) <= SIZE_MAX
>From gcc-bugs-return-635356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:11:59 2019
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Tue, 26 Feb 2019 16:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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Subject: [Bug tree-optimization/89509] restrict doesnt work with subfield accesses
Date: Tue, 26 Feb 2019 16:12:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45827
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45827&action=edit
the patch
>From gcc-bugs-return-635358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:20:32 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #11 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
I agree, that it would be better to not put any
mergeable things in a block object. If section anchors
are ever used on a string constant, it is going to fail.
A constant with size = 0 is possible, for instance
in Ada an empty string really empty. These should not
go into mergeable sections. output_constant
ignores the merge_strings parameter, therefore
I would not assume there is a zero termination
Instead of:
if (thissize == 0
|| TREE_STRING_POINTER (str) [thissize - 1] != '\0')
size = MAX (size, thissize + 1);
maybe:
if (thissize != 0
&& TREE_STRING_POINTER (str) [thissize - 1] != '\0')
size = MAX (size, thissize + 1);
>From gcc-bugs-return-635359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:21:46 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #12 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
> These should not go into mergeable sections.
I mean: These do not go into mergeable sections.
>From gcc-bugs-return-635360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:24:56 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #11)
> Instead of:
>
> if (thissize == 0
> || TREE_STRING_POINTER (str) [thissize - 1] != '\0')
> size = MAX (size, thissize + 1);
>
> maybe:
>
> if (thissize != 0
> && TREE_STRING_POINTER (str) [thissize - 1] != '\0')
> size = MAX (size, thissize + 1);
Well, it matches what output_constant does:
case STRING_CST:
thissize = (unsigned HOST_WIDE_INT)TREE_STRING_LENGTH (exp);
if (merge_strings
&& (thissize == 0
|| TREE_STRING_POINTER (exp) [thissize - 1] != '\0'))
thissize++;
(using MAX just in case there is already some extra padding in the length or
whatever else).
>From gcc-bugs-return-635361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:27:44 2019
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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--- Comment #6 from Linus Torvalds <torvalds@linux-foundation.org> ---
(In reply to Richard Biener from comment #5)
>
> And this meeting helps us avoid bogus warnings for cases where GCC has
> difficulties proving dead code paths are actually dead ...
Ack. I do see the difficulty. We already disable some of the
"may-be-uninitialized" warnings in the kernel because they end up being too
noisy for some configurations.
NP. If you guys figure something out, it will be good. If not, we'll survive.
>From gcc-bugs-return-635362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:30:46 2019
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
It's reliably the case that a false positive uninit warning also represents a
failure to optimize something. So we've got significant incentives to deeply
analyze and look for fixes. So feel free to pass examples of those along.
>From gcc-bugs-return-635363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:35:53 2019
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Sigh, I tested with clang but using std::allocator, which is handled by a
partial specialization. It's still broken with clang.
>From gcc-bugs-return-635364-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:49:09 2019
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
valid_constant_size_p assumes it is sizetype/ssizetype constant, but in this
case we check it before converting it to sizetype. Checking now if it is just
one spot or if there aren't others.
>From gcc-bugs-return-635365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 16:50:42 2019
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Subject: [Bug middle-end/89501] Odd lack of warning about missing initialization
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--- Comment #8 from Linus Torvalds <torvalds@linux-foundation.org> ---
(In reply to Jeffrey A. Law from comment #7)
> It's reliably the case that a false positive uninit warning also represents
> a failure to optimize something. So we've got significant incentives to
> deeply analyze and look for fixes. So feel free to pass examples of those
> along.
Well, most of it is due to interactions with *other* issues entirely.
For example, when we enable GCOV for coverage checking, we have to disable
tree-loop-im, because of excessive stack usage due to gcc bugzilla 69702.
And disabling that optimization then leads to bogus "might be used
uninitialized" warnings.
We have a few other cases like that. Eg we can't use -Os without also disabling
-Wmaybe-uninitialized etc.
Some of the cases may be historical (ie maybe you've fixed the issues that
cause us to do that in newer versions), but for various distro reasons we end
up supporting old compilers for a _looong_ time.
We not that long ago ended up increasing the minimum required gcc version for
the kernel to gcc-4.6.
So we have this odd "we love using new features" fight with "oops, but we end
up having people using relatively ancient compiler versions".
>From gcc-bugs-return-635366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 17:08:47 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Tue, 26 Feb 2019 17:08:00 -0000
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--- Comment #14 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Tue Feb 26 17:08:06 2019
New Revision: 269218
URL: https://gcc.gnu.org/viewcvs?rev=269218&root=gcc&view=rev
Log:
PR rtl-optimization/87761
* regcprop.c (copyprop_hardreg_forward_1): Use REG_UNUSED notes to
detect obviously dead insns and delete them.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regcprop.c
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Let me look into it.
>From gcc-bugs-return-635368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 17:28:49 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
Date: Tue, 26 Feb 2019 17:28:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45828
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45828&action=edit
gcc9-pr89507.patch
Untested patch I have right now.
>From gcc-bugs-return-635369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 17:31:10 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
Date: Tue, 26 Feb 2019 17:31:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason to change tree.c rather than doing something on the cp/init.c side
is the comment there that the checking ought to be done before conversion to
std::size_t (and also, we'd fold to sizetype just for the purposes of the
diagnostics and throw away the result).
>From gcc-bugs-return-635370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 17:44:49 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89510] New: new_allocator::construct needs to be constrained
Date: Tue, 26 Feb 2019 17:44:00 -0000
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Bug ID: 89510
Summary: new_allocator::construct needs to be constrained
Product: gcc
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The construct member has an exception specification which might cause errors
outside the immediate context when trying to determine if the function is
callable.
We should either remove the exception specification (which would be a step
backwards) or should constrain the function using enable_if.
This isn't currently causing issues because we only use the function in
contexts where it's required to work anyway. However, the internal
__is_copy_insertable and __is_move_insertable traits do attempt to check if the
construct() function template is invocable, and so could hit this issue.
Currently we don't use __is_copy_insertable, and only use __is_move_insertable
in contexts where move insertion into std::vector is required to be valid
anyway.
Any other allocators that have a conditional exception specification (including
at least malloc_allocator) need the same change.
>From gcc-bugs-return-635371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 17:59:37 2019
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Subject: [Bug c/89511] New: ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 17:59:00 -0000
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Bug ID: 89511
Summary: ICE in push_using_decl_1, at cp/name-lookup.c:3845
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Seems to be an older issue (with -std=c++17) :
$ cat z1.cc
void f ()
{
enum e { a };
using e::a;
}
$ g++-9-20190224 -c z1.cc
z1.cc: In function 'void f()':
z1.cc:4:12: internal compiler error: in push_using_decl_1, at
cp/name-lookup.c:3845
4 | using e::a;
| ^
0x6922f9 push_using_decl_1
../../gcc/cp/name-lookup.c:3845
0x6922f9 push_using_decl
../../gcc/cp/name-lookup.c:3866
0x6922f9 validate_nonmember_using_decl
../../gcc/cp/name-lookup.c:3967
0x699767 finish_local_using_decl(tree_node*, tree_node*, tree_node*)
../../gcc/cp/name-lookup.c:5166
0x6c9711 cp_parser_using_declaration
../../gcc/cp/parser.c:19495
0x6b8639 cp_parser_declaration_statement
../../gcc/cp/parser.c:12922
0x6b9097 cp_parser_statement
../../gcc/cp/parser.c:11246
0x6b9f20 cp_parser_statement_seq_opt
../../gcc/cp/parser.c:11608
0x6b9fcf cp_parser_compound_statement
../../gcc/cp/parser.c:11562
0x6d0830 cp_parser_function_body
../../gcc/cp/parser.c:22578
0x6d0830 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/cp/parser.c:22615
0x6d0b10 cp_parser_function_definition_after_declarator
../../gcc/cp/parser.c:27682
0x6d17c3 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/cp/parser.c:27598
0x6d17c3 cp_parser_init_declarator
../../gcc/cp/parser.c:20221
0x6b6b0e cp_parser_simple_declaration
../../gcc/cp/parser.c:13492
0x6d6b34 cp_parser_declaration
../../gcc/cp/parser.c:13189
0x6d728e cp_parser_translation_unit
../../gcc/cp/parser.c:4698
0x6d728e c_parse_file()
../../gcc/cp/parser.c:41062
0x796060 c_common_parse_file()
../../gcc/c-family/c-opts.c:1155
>From gcc-bugs-return-635372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:01:06 2019
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Subject: [Bug fortran/67542] ICE in gfc_emit_parameter_debug_info, at fortran/trans-decl.c:4947 and :4945
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G. Steinmetz <gscfq@t-online.de> changed:
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CC| |gscfq@t-online.de
--- Comment #9 from G. Steinmetz <gscfq@t-online.de> ---
Yep, done.
>From gcc-bugs-return-635373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:01:38 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89212] [8 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Tue, 26 Feb 2019 18:01:00 -0000
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--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Feb 26 18:00:41 2019
New Revision: 269222
URL: https://gcc.gnu.org/viewcvs?rev=269222&root=gcc&view=rev
Log:
PR c++/89212 - ICE converting nullptr to pointer-to-member-function.
* pt.c (tsubst_copy_and_build) <case CONSTRUCTOR>: Return early for
null member pointer value.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/nullptr40.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/nullptr41.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/pt.c
>From gcc-bugs-return-635374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:01:55 2019
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Subject: [Bug c++/89212] [8 Regression] ICE in fold_convert_loc at fold-const.c:2552
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-635375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:04:55 2019
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Subject: [Bug c++/89512] New: ICE in get_expr_operands, at tree-ssa-operands.c:882
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89512
Bug ID: 89512
Summary: ICE in get_expr_operands, at tree-ssa-operands.c:882
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Affects versions down to gcc-5, no ICE seen with 4.9 or older :
$ cat z1.cc
struct A {
template <typename A>
static const int a = 0;
};
struct B {
template <typename B>
static int foo ()
{
return B::a;
}
};
int bar ()
{
int i = B::foo<A> ();
}
$ g++-9-20190224 -c z1.cc
z1.cc: In function 'int bar()':
z1.cc:15:1: warning: no return statement in function returning non-void
[-Wreturn-type]
15 | }
| ^
unhandled expression in get_expr_operands():
<template_decl 0x7f4cbd04c180 a
type <integer_type 0x7f4cbd179bd0 int readonly sizes-gimplified type_6 SI
size <integer_cst 0x7f4cbd044078 constant 32>
unit-size <integer_cst 0x7f4cbd044090 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f4cbd179bd0 precision:32 min <integer_cst 0x7f4cbd044030 -2147483648> max
<integer_cst 0x7f4cbd044048 2147483647>>
used decl_1 VOID z1.cc:3:20
align:1 warn_if_not_align:0 context <record_type 0x7f4cbd1799d8 A>
parms <tree_list 0x7f4cbd17b320
purpose <integer_cst 0x7f4cbd022f30 constant 1>
value <tree_vec 0x7f4cbd1872a0 type <template_decl 0x7f4cbd04c180 a>
length:1
elt:0 <tree_list 0x7f4cbd17b2f8 value <type_decl 0x7f4cbd1457b8
A>>>>
full-name "template<class A> const int A::a<A>"
chain <type_decl 0x7f4cbd145720 A>>
during GIMPLE pass: ssa
z1.cc: In static member function 'static int B::foo() [with B = A]':
z1.cc:15:1: internal compiler error: in get_expr_operands, at
tree-ssa-operands.c:882
0xfd18e9 get_expr_operands
../../gcc/tree-ssa-operands.c:882
0xfd24cd parse_ssa_operands
../../gcc/tree-ssa-operands.c:932
0xfd3d23 build_ssa_operands
../../gcc/tree-ssa-operands.c:947
0xfd3d23 update_stmt_operands(function*, gimple*)
../../gcc/tree-ssa-operands.c:1081
0xed1f4a update_stmt
../../gcc/gimple-ssa.h:175
0xed1f4a mark_def_sites
../../gcc/tree-into-ssa.c:649
0xed1f4a mark_def_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-into-ssa.c:2346
0x16925c7 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:353
0xed4619 execute
../../gcc/tree-into-ssa.c:2458
>From gcc-bugs-return-635376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:17:21 2019
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Subject: [Bug go/89171] FAIL: go/build
Date: Tue, 26 Feb 2019 18:17:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|riscv64-*-* |
--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
If $GOROOT is unset, ctxt.GOROOT it set to "/usr". listStdPkgs then finds all
the files in /usr/src/debug.
>From gcc-bugs-return-635377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:23:21 2019
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89410] [7/8 Regression] ICE in calculate_line_spans, at diagnostic-show-locus.c:1237 after #line
Date: Tue, 26 Feb 2019 18:23:00 -0000
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--- Comment #20 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Maybe you want to say .-1 instead of -1 ?
>From gcc-bugs-return-635378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:31:13 2019
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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Tue, 26 Feb 2019 18:31:00 -0000
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tnfchris at gcc dot gnu.org
--- Comment #8 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
This is causing a glibc build failure on arm-none-Linux-gnueabihf, for some
reason I can only reproduce it native but not cross. Don't exactly know why...
configured with
```
--enable-languages=c,c++,fortran --target=arm-none-linux-gnueabihf
--build=arm-none-linux-gnueabihf --host=arm-none-linux-gnueabihf
--with-arch=armv7-a --with-fpu=neon --with-float=hard --with-mode=thumb
```
repro case
```
long long a;
void f () {
if (a >= 9223372036854775807 - 1 + 400)
for (;;)
;
}
```
compiled with
```
-c -O2 -Wno-maybe-uninitialized
```
Which gets combined by combine into
```
Trying 8 -> 10:
8: r112:DI=0x800000000000018e
10: {cc:CC_NCV=cmp(r113:DI,r112:DI);clobber scratch;}
REG_DEAD r113:DI
REG_DEAD r112:DI
REG_EQUAL cmp(r113:DI,0x800000000000018e)
Successfully matched this instruction:
(parallel [
(set (reg:CC_NCV 100 cc)
(compare:CC_NCV (reg:DI 113 [ aD.5557 ])
(const_int -9223372036854775410 [0x800000000000018e])))
(clobber (scratch:SI))
])
allowing combination of insns 8 and 10
```
and then later is split into
```
(insn 51 50 11 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg:SI 3 r3 [ aD.5557+4 ])
(const_int -2147483648 [0xffffffff80000000])))
(set (reg:SI 3 r3 [114])
(minus:SI (plus:SI (reg:SI 3 r3 [ aD.5557+4 ])
(const_int -2147483648 [0xffffffff80000000]))
(ltu:SI (reg:CC_C 100 cc)
(const_int 0 [0]))))
]) "zic.i":4:6 -1
(nil))
```
Which matches no instruction and so ICEs. On a cross build this seems to get
split into
```
(insn 51 50 11 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg:SI 3 r3 [ aD.5557+4 ])
(const_int 2147483647 [0x7fffffff])))
(set (reg:SI 3 r3 [114])
(minus:SI (plus:SI (reg:SI 3 r3 [ aD.5557+4 ])
(const_int 2147483647 [0x7fffffff]))
(ltu:SI (reg:CC_C 100 cc)
(const_int 0 [0]))))
]) "zin.i":4:6 32 {*subsi3_carryin_compare_const}
(nil))
```
So the constants seem to be different.
>From gcc-bugs-return-635379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:32:24 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89511] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 18:32:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-635380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:33:36 2019
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Tue, 26 Feb 2019 18:33:00 -0000
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--- Comment #14 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Jakub Jelinek from comment #13)
>
> Well, it matches what output_constant does:
> case STRING_CST:
> thissize = (unsigned HOST_WIDE_INT)TREE_STRING_LENGTH (exp);
> if (merge_strings
> && (thissize == 0
> || TREE_STRING_POINTER (exp) [thissize - 1] != '\0'))
> thissize++;
> (using MAX just in case there is already some extra padding in the length or
> whatever else).
Ah, well. Just FYI, this check in output_constant
if (size == 0 || flag_syntax_only)
return size;
prevents zero-padding of strings with STRING_LENGTH==0 && DECL_SIZE==0.
But due to the check in mergeable_string_section
&& (len = int_size_in_bytes (TREE_TYPE (decl))) > 0
&& TREE_STRING_LENGTH (decl) == len)
we should not get size==0 or thissize == 0 in a merge_strings section.
So it should not make a difference what happens with thissize==0.
>From gcc-bugs-return-635381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:34:13 2019
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The PR89506 patch might contain a fix for this.
>From gcc-bugs-return-635382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 18:37:22 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE in push_using_decl_1, |[7/8/9 Regression] ICE in
|at cp/name-lookup.c:3845 |push_using_decl_1, at
| |cp/name-lookup.c:3845
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
GCC 4.9.4 doesn't ICE. Started with r211479.
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Since Jakub already has a fix I'm unassigning myself.
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Subject: [Bug c++/89512] [7/8/9 Regression] ICE in get_expr_operands, at tree-ssa-operands.c:882
Date: Tue, 26 Feb 2019 18:43:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in get_expr_operands, |[7/8/9 Regression] ICE in
|at tree-ssa-operands.c:882 |get_expr_operands, at
| |tree-ssa-operands.c:882
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r214396.
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-635386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 19:10:37 2019
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Feb 26 19:10:00 2019
New Revision: 269226
URL: https://gcc.gnu.org/viewcvs?rev=269226&root=gcc&view=rev
Log:
2019-02-26 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89496
* trans-types.c (get_formal_from_actual_arglist): If
the actual arglist has no expression, the corresponding
formal arglist is an alternate return.
2019-02-26 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89496
* gfortran.dg/altreturn_9_0.f90: New file.
* gfortran.dg/altreturn_9_1.f90: New file.
Added:
trunk/gcc/testsuite/gfortran.dg/altreturn_9_0.f90
trunk/gcc/testsuite/gfortran.dg/altreturn_9_1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-types.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed, closing.
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
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Bug 63426 depends on bug 89496, which changed state.
Bug 89496 Summary: [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89496
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>From gcc-bugs-return-635389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 19:34:07 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89513] New: constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
Date: Tue, 26 Feb 2019 19:34:00 -0000
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Bug ID: 89513
Summary: constexpr functions with function try block shouldn't
be accepted at least with -pedantic in
-std=c++{11,14,17} modes
Product: gcc
Version: 9.0
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With -std=c++{11,14,17} -pedantic-errors we should reject both of these
functions, but we do reject just bar and not foo. I assume this ought to be
valid C++2a (though wonder if the catch block needs to contain only valid
constexpr constructs even when it is not actually ever evaluated during
constexpr evaluation).
constexpr bool foo ()
try {
return true;
} catch (...) {
}
constexpr bool bar ()
{
try { return true; } catch (...) {}
return true;
}
constexpr auto a = foo ();
constexpr auto b = bar ();
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Tue, 26 Feb 2019 20:02:00 -0000
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--- Comment #9 from darkkirb at darkkirb dot de ---
I have bisected the fix a bit (I didn't have enough time today to finish it)
and i found that the fix has happened in one of the 322 commits between
d1540be4d3b4b8ac6d19997539c13d2ca74f65e4 (2018-09-26, broken)
and
44257478a8d157f8e0030bb7abe1c3ac91be9302 (2018-10-31, fixed)
Hopefully the fix can be applied to the gcc-8_0 branch.
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Tue, 26 Feb 2019 20:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89492
--- Comment #5 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Tue Feb 26 20:03:08 2019
New Revision: 269227
URL: https://gcc.gnu.org/viewcvs?rev=269227&root=gcc&view=rev
Log:
2019-02-26 Harald Anlauf <anlauf@gmx.de>
PR fortran/89492
* check.c (gfc_calculate_transfer_sizes): Handle cases where
storage size of elements of MOLD is 0.
PR fortran/89492
* gfortran.dg/pr89492.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr89492.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/check.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:06:05 2019
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Subject: [Bug lto/89514] New: -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
Date: Tue, 26 Feb 2019 20:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89514
Bug ID: 89514
Summary: -g -fdebug-types-section -flto gives 'Dwarf Error: bad
length' in gdb
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
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CC: marxin at gcc dot gnu.org
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#include <iostream>
int main()
{
std::cout << "Hello, World!";
return 0;
}
g++ hello_world.cc -g -fdebug-types-section -flto -o hello_world
gdb hello_world
Then GDB 7.11.1, 8.1, 8.2 reports:
Dwarf Error: bad length (0xe7) in compilation unit header (offset 0x1e3a + 0)
For larger binaries GDB reports a corrupted dwarf version:
Dwarf Error: wrong version in compilation unit header (is 3745, should be 2, 3,
or 4)
Reproduced on GCC 8.1, 8.2, 8.3 with Binutils 2.30 and Binutils 2.32.
At first I suspected Binutils, then GDB, but I think this is a GCC issue, since
-fdebug-types-section works with -fwhole-program, but not -flto.
>From gcc-bugs-return-635393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:11:36 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 20:11:00 -0000
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
To clarify a bit: if I revert r211479 we don't ICE anymore on the new testcase
but we reject it anyway and using-enum-1.C too, which instead we should accept.
By the way, Core/1742 is still open ;)
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
Date: Tue, 26 Feb 2019 20:12:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |87295
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to PR 87295.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
[Bug 87295] [8 Regression][early debug] ICE with -ffat-lto-objects
-fdebug-types-section -g
>From gcc-bugs-return-635395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:23:41 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 20:23:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |ice-on-valid-code
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Changing the keywords;
http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_active.html#1742 says it's
well-formed.
>From gcc-bugs-return-635396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:27:53 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 20:27:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This works:
namespace N {
enum E { e };
using E::e;
}
>From gcc-bugs-return-635397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:35:23 2019
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Tue, 26 Feb 2019 20:35:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 26 20:34:46 2019
New Revision: 269229
URL: https://gcc.gnu.org/viewcvs?rev=269229&root=gcc&view=rev
Log:
PR libstdc++/89416 fix alloc insertable trait for clang (again)
PR libstdc++/89416
* include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
to class template and partial specialization using void_t.
(__is_copy_insertable, __is_move_insertable): Adjust base class.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/alloc_traits.h
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
Date: Tue, 26 Feb 2019 20:37:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 26 20:36:29 2019
New Revision: 269230
URL: https://gcc.gnu.org/viewcvs?rev=269230&root=gcc&view=rev
Log:
PR tree-optimization/89500
* tree-ssa-strlen.c (stridx_strlenloc): Adjust comment.
(handle_builtin_strlen): Remove noncst_bound variable. Always
optimize strnlen (x, 0) to 0. Optimize strnlen (x, cst) to
cst if the first cst bytes starting at x are known to be non-zero,
even if the string is not zero terminated. Don't try to modify
*si for strnlen. Update strlen_to_stridx only for strlen or if
we can prove strnlen returns the same value as strlen would.
* gcc.dg/pr89500.c: New test.
* gcc.dg/Wstringop-overflow-10.c: New test.
* gcc.dg/strlenopt-60.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-10.c
trunk/gcc/testsuite/gcc.dg/pr89500.c
trunk/gcc/testsuite/gcc.dg/strlenopt-60.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Yes, it works, it's c++/60265.
>From gcc-bugs-return-635400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 20:48:01 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 20:48:00 -0000
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--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thus, to repeat, if we only want to avoid the regression part, it would be just
matter of changing the code I added for c++/60265 to do qscope =
CP_TYPE_CONTEXT (qscope) only when we end-up in a namespace. On the other hand,
if we want to go beyond that we have a little more non-trivial work to do.
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Tue, 26 Feb 2019 20:55:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Paolo Carlini from comment #7)
> Thus, to repeat, if we only want to avoid the regression part, it would be
> just matter of changing the code I added for c++/60265 to do qscope =
> CP_TYPE_CONTEXT (qscope) only when we end-up in a namespace. On the other
> hand, if we want to go beyond that we have a little more non-trivial work to
> do.
I think I'll do just that. I don't know what we would use as the
USING_DECL_SCOPE in this case; anything other than a NAMESPACE_DECL won't work
currently. do_nonmember_using_decl uses qualified_namespace_lookup so that
would require further changes.
And maybe the DR will be resolved in such a way that both examples will be
ill-formed.
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Totally agreed.
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Paolo Carlini from comment #9)
> Totally agreed.
Thanks (also thanks for the DR reference)!.
>From gcc-bugs-return-635404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 21:23:26 2019
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Subject: [Bug tree-optimization/89500] [9 Regression] ICE: tree check: expected integer_cst, have ssa_name in get_len, at tree.h:5653
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89507] [9 Regression] bogus "size of array exceeds maximum object size"
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 26 21:27:33 2019
New Revision: 269233
URL: https://gcc.gnu.org/viewcvs?rev=269233&root=gcc&view=rev
Log:
PR c++/89507
* tree.c (valid_constant_size_p): Deal with size INTEGER_CSTs
with types other than sizetype/ssizetype.
* g++.dg/other/new2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/other/new2.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug c++/87996] [8 Regression] "size of array is negative" error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX
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Bug 87996 depends on bug 89507, which changed state.
Bug 89507 Summary: [9 Regression] bogus "size of array exceeds maximum object size"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89507
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--- Comment #15 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
I wonder if this would also work?
At least for simple test cases that seems to be fine.
--- varasm.c.orig 2019-01-25 17:57:32.000000000 +0100
+++ varasm.c 2019-02-26 22:03:39.753325517 +0100
@@ -373,6 +373,9 @@ get_block_for_section (section *sect)
if (sect == NULL)
return NULL;
+ if (sect->common.flags & SECTION_MERGE)
+ return NULL;
+
object_block **slot
= object_block_htab->find_slot_with_hash (sect, hash_section (sect),
INSERT);
>From gcc-bugs-return-635409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 21:41:33 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89513] constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
Date: Tue, 26 Feb 2019 21:41:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-26
CC| |msebor at gcc dot gnu.org
Blocks| |55004
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Clang 7 prints:
$ clang++ -S -Wall pr89513.C
pr89513.C:2:1: error: function try block not allowed in constexpr function
try {
^
pr89513.C:9:3: error: statement not allowed in constexpr function
try { return true; } catch (...) {}
^
2 errors generated.
The latest Clang with -Wall:
pr89513.C:3:1: warning: function try block in constexpr function is a C++2a
extension [-Wc++2a-extensions]
try {
^
pr89513.C:6:1: warning: control may reach end of non-void function
[-Wreturn-type]
}
^
pr89513.C:10:3: warning: use of this statement in a constexpr function is a
C++2a extension [-Wc++2a-extensions]
try { return true; } catch (...) {}
^
pr89513.C:14:16: warning: unused variable 'a' [-Wunused-const-variable]
constexpr auto a = foo ();
^
pr89513.C:15:16: warning: unused variable 'b' [-Wunused-const-variable]
constexpr auto b = bar ();
^
5 warnings generated.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004
[Bug 55004] [meta-bug] constexpr issues
>From gcc-bugs-return-635411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 22:05:39 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If that works, I'm all for it.
CCing Richard Sandiford as the original author of -fsection-anchors if he
remembers why this hasn't been done for SECTION_MERGE sections from the
beginning.
default_use_anchors_for_symbol_p starts with
/* Don't use anchors for mergeable sections. The linker might move
the objects around. */
sect = SYMBOL_REF_BLOCK (symbol)->sect;
if (sect->common.flags & SECTION_MERGE)
return false;
and seems all other targetm.use_anchors_for_symbol_p hooks just return false in
a few extra cases than default_use_anchors_for_symbol_p, never return true when
it doesn't.
So indeed, I don't see advantages in using SYMBOL_REF_BLOCK for SECTION_MERGE
section symbols.
>From gcc-bugs-return-635410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 22:05:23 2019
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Subject: [Bug c/89515] New: m32c ICE error: in leaf_function_p, at final.c:4492 when compiling newlib 3.1.0 with XGCC 8.3.0
Date: Tue, 26 Feb 2019 22:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89515
Bug ID: 89515
Summary: m32c ICE error: in leaf_function_p, at final.c:4492
when compiling newlib 3.1.0 with XGCC 8.3.0
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: hdusel@tangerine-soft.de
Target Milestone: ---
m32c-none-elf-gcc
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/targ-include
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/include
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/m32c
-L/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/libnosys
-L/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/libgloss/m32c
-mcpu=m32cm -DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"3.1.0\" -DPACKAGE_STRING=\"newlib\ 3.1.0\"
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -I.
-I/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz -Os
-fno-builtin -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY -D__NO_SYSCALLS__
-DMISSING_SYSCALL_NAMES -DABORT_PROVIDED -DHAVE_INIT_FINI -g -O2
-mcpu=m32cm -c -o lib_a-argz_create_sep.o `test -f 'argz_create_sep.c' || echo
'/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/'`argz_create_sep.c
m32c-none-elf-gcc
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/targ-include
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/include
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/m32c
-L/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/libnosys
-L/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/libgloss/m32c
-mcpu=m32cm -DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"3.1.0\" -DPACKAGE_STRING=\"newlib\ 3.1.0\"
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -I.
-I/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz -Os
-fno-builtin -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY -D__NO_SYSCALLS__
-DMISSING_SYSCALL_NAMES -DABORT_PROVIDED -DHAVE_INIT_FINI -g -O2
-mcpu=m32cm -c -o lib_a-argz_delete.o `test -f 'argz_delete.c' || echo
'/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/'`argz_delete.c
m32c-none-elf-gcc
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/newlib/targ-include
-isystem
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/include
-B/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/m32c
-L/tmp/build_cross_gcc/newlib-3.1.0_build_m32c-none-elf/m32c-none-elf/m32cm/libgloss/libnosys
-L/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/libgloss/m32c
-mcpu=m32cm -DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"3.1.0\" -DPACKAGE_STRING=\"newlib\ 3.1.0\"
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -I.
-I/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz -Os
-fno-builtin -DPREFER_SIZE_OVER_SPEED -DSMALL_MEMORY -D__NO_SYSCALLS__
-DMISSING_SYSCALL_NAMES -DABORT_PROVIDED -DHAVE_INIT_FINI -g -O2
-mcpu=m32cm -c -o lib_a-argz_extract.o `test -f 'argz_extract.c' || echo
'/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/'`argz_extract.c
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_count.c:
In function 'argz_count':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_count.c:25:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[8]: *** [lib_a-argz_count.o] Error 1
make[8]: *** Waiting for unfinished jobs....
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_append.c:
In function 'argz_append':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_append.c:31:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_add.c:
In function 'argz_add':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_add.c:32:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[8]: *** [lib_a-argz_append.o] Error 1
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_add_sep.c:
In function 'argz_add_sep':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_add_sep.c:35:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_delete.c:
In function 'argz_delete':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_delete.c:40:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[8]: *** [lib_a-argz_add.o] Error 1
make[8]: *** [lib_a-argz_add_sep.o] Error 1
make[8]: *** [lib_a-argz_delete.o] Error 1
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_create.c:
In function 'argz_create':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_create.c:49:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_create_sep.c:
In function 'argz_create_sep':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_create_sep.c:68:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[8]: *** [lib_a-argz_create.o] Error 1
make[8]: *** [lib_a-argz_create_sep.o] Error 1
during RTL pass: pro_and_epilogue
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_extract.c:
In function 'argz_extract':
/tmp/build_cross_gcc/newlib-3.1.0_arch/newlib-3.1.0/newlib/libc/argz/argz_extract.c:31:1:
internal compiler error: in leaf_function_p, at final.c:4492
}
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[8]: *** [lib_a-argz_extract.o] Error 1
make[7]: *** [all-recursive] Error 1
make[6]: *** [all-recursive] Error 1
make[5]: *** [all] Error 2
make[4]: *** [multi-do] Error 1
make[3]: *** [all-multi] Error 2
make[2]: *** [all] Error 2
make[1]: *** [all-target-newlib] Error 2
make: *** [all] Error 2
hymir:build-cross-gcc hdusel$
>From gcc-bugs-return-635412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 22:12:56 2019
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Subject: [Bug target/89515] m32c ICE error: in leaf_function_p, at final.c:4492 when compiling newlib 3.1.0 with XGCC 8.3.0
Date: Tue, 26 Feb 2019 22:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89515
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely a dup of bug 83670.
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Subject: [Bug target/89515] m32c ICE error: in leaf_function_p, at final.c:4492 when compiling newlib 3.1.0 with XGCC 8.3.0
Date: Tue, 26 Feb 2019 22:16:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Yes it is a dup.
*** This bug has been marked as a duplicate of bug 83670 ***
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Subject: [Bug target/83670] m32c ICE in leaf_function_p, at final.c:4368
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hdusel@tangerine-soft.de
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89515 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 22:25:03 2019
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Subject: [Bug target/83670] m32c ICE in leaf_function_p, at final.c:4368
Date: Tue, 26 Feb 2019 22:25:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Exposed by https://gcc.gnu.org/ml/gcc-patches/2017-05/msg01027.html .
The value might already be cached by the time we call leaf_function_p in
crtl->is_leaf which can be used here instead.
Related to the similar issue on mmix: PR 85666.
>From gcc-bugs-return-635416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 22:36:31 2019
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Subject: [Bug middle-end/82853] Optimize x % 3 == 0 without modulo
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Orr Shalom Dvory <dvoreader at gmail dot com> changed:
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CC| |dvoreader at gmail dot com
--- Comment #33 from Orr Shalom Dvory <dvoreader at gmail dot com> ---
(In reply to Jakub Jelinek from comment #25)
> Created attachment 44657 [details]
> gcc9-pr82853.patch
>
> Full untested patch. For x % C1 == C2 it handles all unsigned cases where
> C1 is odd, if C1 is even, just cases where C2 <= -1U % C1, if signed modulo,
> just x % C1 == 0 cases (where C1 is not INT_MIN).
Hi, I will try to help. I've got a more accurate formula. look at my comment
over here https://reviews.llvm.org/D50222
I'm copying it here for the sake of all.
Hi guys, I found the magical formula for unsigned integers that works also with
even numbers without the need to check for overflows with any remainder:
from divisor d and reminder r, I calculate 4 constants.
any d!=0 should fit.
void calculate_constants64(uint64_t d, uint64_t r, uint64_t &k,uint64_t &mmi,
uint64_t &s,uint64_t& u)
{
k=__builtin_ctzll(d);/* the power of 2 */
uint64_t d_odd=d>>k;
mmi=find_mod_mul_inverse(d_odd,64);
/* 64 is word size*/
s=(r*mmi);
u=(ULLONG_MAX-r)/d;/* note that I divide by d, not d_odd */
}
A little bit background: the constant (u +1) is the count of the possible
values in the range of 64 bit number that will yield the correct modulo.
The constant s should zero the first k bits if the given value have modulo of
r. it will also zero the modulo of d_odd.
then the compiler should generate the following code with the given constants:
int checkrem64(uint64_t k,uint64_t mmi, uint64_t s,uint64_t u,uint64_t x)
{
uint64_t o=((x*mmi)-s);
o= (o>>k)|(o<<(64-k));/*ROTR64(o,k)*/
return o<=u;
}
this replace the following:
/* d is the divisor, r is the remainder */
int checkrem64(uint64_t x)
{
return x%d==r;
}
this is the code to find modular inverse..
uint64_t find_mod_mul_inverse(uint64_t x, uint64_t bits)
{
if (bits > 64 || ((x&1)==0))
return 0;// invalid parameters
uint64_t mask;
if (bits == 64)
mask = -1;
else
{
mask = 1;
mask<<=bits;
mask--;
}
x&=mask;
uint64_t result=1, state=x, ctz=0;
while(state!=1ULL)
{
ctz=__builtin_ctzll(state^1);
result|=1ULL<<ctz;
state+=x<<ctz;
state&=mask;
}
return result;
}
good luck!
I tested this on all the cases of 10bit word size, and it passed.
*Edit:* I looked for something that will work for signed integers. I came up
with something that would work with negative numbers if the following
assumption was correct:
(-21)%10==9
but this assumption is not correct because (-21)%10 equals to -1.
anyway, the idea is like that, you shift the range and change s and
accordingly:
void calculate_constants64(uint64_t d, uint64_t r, uint64_t &k,uint64_t &mmi,
uint64_t &s,uint64_t& u)
{
k=__builtin_ctzll(d);/* the power of 2 */
uint64_t d_odd=d>>k;
mmi=find_mod_mul_inverse(d_odd,64);
/* 64 is word size*/
//this is the added line to make it work with signed integers
r+=0x8000 0000 0000 0000% d;
s=(r*mmi);
u=(ULLONG_MAX-r)/d;
}
int checkrem64(uint64_t k,uint64_t mmi, uint64_t s,uint64_t u,uint64_t x)
{
//this is the added line to make it work with signed integers
//x came as signed number but was casted to unsigned
x^=0x8000 0000 0000 0000;// this is addition simplified to xor, spaces for
clarity.
uint64_t o=((x*mmi)-s);
o= (o>>k)|(o<<(64-k));/*ROTR64(o,k)*/
return o<=u;
}
There is a way to tweak u and s to make it work on negative only numbers or
positive only numbers, when r is negative or positive... but for r=0, this
should work. please tell me the exact requirements, and I will do the math.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
Date: Tue, 26 Feb 2019 23:13:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 26 23:12:44 2019
New Revision: 269234
URL: https://gcc.gnu.org/viewcvs?rev=269234&root=gcc&view=rev
Log:
PR libstdc++/89477 constrain deduction guides for maps and sets
The Compare, Hash, and Pred template parameters should be constrained in
the C++17 deduction guides for associative and unordered containers.
The deduction guides for stack, queue and priority_queue are already
constrained, but this patch makes them use the _RequireNotAllocator
helper instead of reproducing the logic each time.
PR libstdc++/89477
* include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
container deduction guides.
* include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
* include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
parameters in deduction guides.
* include/bits/stl_multimap.h (multimap): Likewise.
* include/bits/stl_multiset.h (multiset): Likewise.
* include/bits/stl_queue.h (queue, priority_queue): Likewise.
* include/bits/stl_set.h (set): Likewise.
* include/bits/stl_stack.h (stack): Likewise.
* include/bits/unordered_map.h (unordered_map, unordered_multimap):
use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
constrain parameters in deduction guides.
* include/bits/unordered_set.h (unordered_set, unordered_multiset):
Likewise.
* testsuite/23_containers/map/cons/deduction.cc: Test additional
deduction cases.
* testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
* testsuite/23_containers/set/cons/deduction.cc: Likewise.
* testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
* testsuite/23_containers/unordered_multimap/cons/deduction.cc:
Likewise.
* testsuite/23_containers/unordered_multiset/cons/deduction.cc:
Likewise.
* testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/alloc_traits.h
trunk/libstdc++-v3/include/bits/hashtable.h
trunk/libstdc++-v3/include/bits/stl_map.h
trunk/libstdc++-v3/include/bits/stl_multimap.h
trunk/libstdc++-v3/include/bits/stl_multiset.h
trunk/libstdc++-v3/include/bits/stl_queue.h
trunk/libstdc++-v3/include/bits/stl_set.h
trunk/libstdc++-v3/include/bits/stl_stack.h
trunk/libstdc++-v3/include/bits/unordered_map.h
trunk/libstdc++-v3/include/bits/unordered_set.h
trunk/libstdc++-v3/testsuite/23_containers/map/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/multiset/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/set/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_map/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multimap/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/cons/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/cons/deduction.cc
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Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
Date: Tue, 26 Feb 2019 23:14:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for all associative and unordered containers.
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--- Comment #5 from Ev Drikos <drikosev at gmail dot com> ---
Hello,
At first, I'd like to note that these 2 options are also ok in MacOS-10.13:
(a) g++8 -g -std=c++11 lib.cpp main.c -o main && ./main
(b) g++8 -g -std=c++11 -I . main.c -S
g++8 -g -std=c++11 -I . lib.cpp -S
g++8 -g -std=c++11 -I . lib.s main.s -o main && ./main
Just for the record, a fresh built gcc-4.8.5~36 in OS X Yosemite (10.10)
doesn't have this problem but I just faced it in OS X Mavericks (10.9),
where I had to properly comment the stmt "ld_uses_coal_sects = true" in
file "darwin.c", added by an unofficial backport of PR/71767.
Hope this helps,
Ev. Drikos
>From gcc-bugs-return-635420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 26 23:32:51 2019
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Subject: [Bug target/89502] Inefficient access to stack_guard in TCB
Date: Tue, 26 Feb 2019 23:32:00 -0000
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
rtx
memory_address_addr_space (machine_mode mode, rtx x, addr_space_t as)
{
rtx oldx = x;
scalar_int_mode address_mode = targetm.addr_space.address_mode (as);
x = convert_memory_address_addr_space (address_mode, x, as);
/* By passing constant addresses through registers
we get a chance to cse them. */
if (! cse_not_expected && CONSTANT_P (x) && CONSTANT_ADDRESS_P (x))
x = force_reg (address_mode, x);
cprop undoes it, which isn't enabled by O1. For x86, using register
instead of a 32-bit constant usually is a performance loss. Shouldn't
backend have a choice here?
>From gcc-bugs-return-635421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 00:28:53 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 00:28:00 -0000
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--- Comment #17 from Alan Modra <amodra at gmail dot com> ---
The correct place for comment #15 patch is get_block_for_decl, I think. I'm
bootstrapping such a patch along with an assert in output_object_block that we
don't have a merge section.
>From gcc-bugs-return-635422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 01:02:58 2019
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Subject: [Bug other/704] --help and --version
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--- Comment #22 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #21)
> (In reply to Iain Sandoe from comment #20)
> > (In reply to Eric Gallager from comment #19)
> > > (In reply to joseph@codesourcery.com from comment #18)
> > > > Whether this is fixed may be determined by running all of the programs
> > > > installed in $exec_prefix/bin by current mainline with the --help and
> > > > --version options (and confirming the GCC version number is properly shown
> > > > in the --version output).
> > >
> > > looks like gcc-nm and gcc-ranlib still fail with --help:
> >
> > That's not a fault with the GCC wrappers, it's because the "upstream"
> > cctools nm and ranlib don't respond to "--help" (or --version). I have
> > amended versions of them that handle --help and --version (available on
> > github***) that work:
> >
> > $ ./gcc/gcc-ar --help
> > usage: ar -d [-TLsv] archive file ...
> > ar -m [-TLsv] archive file ...
> > <snip>
> >
> > $ ./gcc/gcc-ar --version
> > xtools-1.1.0 ar
> >
> > - the point is that this is not a problem with the GCC wrappers, the
> > intention of them is to pass the --help and --version onto the underlying
> > commands.
> >
> > From the point of view of Darwin, I'd say this could be closed, of course it
> > might not be completely clean for other platforms.
> >
> > *** Note: the versions published on github are quite old - on the TODO to
> > provide some updates.
>
> OK, closing then.
Opened an issue on GitHub for your version of cctools about this:
https://github.com/iains/darwin-xtools/issues/3
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
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Frank Ch. Eigler <fche at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fche at redhat dot com
--- Comment #66 from Frank Ch. Eigler <fche at redhat dot com> ---
Just in case it helps, we are encountering this problem with fedora29's gcc
8.2.1,
when compiling a 24-million unsigned-char initialized array:
% gcc -c -Q -v foo.i
[...]
Time variable usr sys wall
GGC
phase setup : 0.00 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
1243 kB ( 0%)
phase parsing : 25.26 ( 83%) 26.12 (100%) 51.47 ( 90%)
2592523 kB (100%)
phase opt and generate : 5.32 ( 17%) 0.08 ( 0%) 5.42 ( 10%)
7 kB ( 0%)
phase finalize : 0.00 ( 0%) 0.02 ( 0%) 0.13 ( 0%)
0 kB ( 0%)
garbage collection : 1.27 ( 4%) 0.00 ( 0%) 1.27 ( 2%)
0 kB ( 0%)
callgraph construction : 4.05 ( 13%) 0.08 ( 0%) 4.15 ( 7%)
5 kB ( 0%)
preprocessing : 5.99 ( 20%) 6.39 ( 24%) 12.20 ( 21%)
524289 kB ( 20%)
lexical analysis : 7.34 ( 24%) 8.90 ( 34%) 16.18 ( 28%)
0 kB ( 0%)
parser (global) : 11.93 ( 39%) 10.83 ( 41%) 23.09 ( 40%)
2068233 kB ( 80%)
TOTAL : 30.58 26.24 57.05
2593783 kB
>From gcc-bugs-return-635424-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 01:33:05 2019
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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Keywords| |patch
--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg02029.html
>From gcc-bugs-return-635425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 01:58:17 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #18 from Alan Modra <amodra at gmail dot com> ---
The assertion triggered in multiple places when compiling various libgcc2.c
pieces, and dfp-bit.c.
>From gcc-bugs-return-635426-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 07:02:04 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #19 from Alan Modra <amodra at gmail dot com> ---
Created attachment 45829
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45829&action=edit
Prevent use of merge sections when -fsection-anchors
This isn't particularly elegant, but survives bootstrap and regtest on
powerpc64le-linux. Companion to this patch is an rs6000 backend one that only
enables -fsection-anchors by default when -mcmodel=small.
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--- Comment #7 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
It still crashes (test was done with 7.4.0), but we're getting somewhere.
It crashes at:
libtool: compile:
/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/xgcc
-shared-libgcc -B/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc
-nostdinc++
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/src
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/src/.libs
-L/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/libsupc++/.libs
-B/usr/local/powerpc64-portbld-freebsd12.0/bin/
-B/usr/local/powerpc64-portbld-freebsd12.0/lib/ -isystem
/usr/local/powerpc64-portbld-freebsd12.0/include -isystem
/usr/local/powerpc64-portbld-freebsd12.0/sys-include
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/../libgcc
-I/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/include/powerpc64-portbld-freebsd12.0
-I/usr/local/poudriere/ports/default/lang/gcc7/work/.build/powerpc64-portbld-freebsd12.0/libstdc++-v3/include
-I/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++
-D_GLIBCXX_SHARED -fno-implicit-templates -Wall -Wextra -Wwrite-strings
-Wcast-qual -Wabi -fdiagnostics-show-location=once -ffunction-sections
-fdata-sections -frandom-seed=class_type_info.lo -g -O2 -pipe -DLIBICONV_PLUG
-c
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc
-fPIC -DPIC -D_GLIBCXX_SHARED -o class_type_info.o
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc:
In member function 'virtual bool
__cxxabiv1::__class_type_info::__do_upcast(const
__cxxabiv1::__class_type_info*, void**) const':
/usr/local/poudriere/ports/default/lang/gcc7/work/gcc-7.4.0/libstdc++-v3/libsupc++/class_type_info.cc:45:6:
internal compiler error: Segmentation fault
bool __class_type_info::
^~~~~~~~~~~~~~~~~
Interestingly, I can see -O0 added to flags before:
gmake "AR_FLAGS=rc" "CC_FOR_BUILD=cc"
"CC_FOR_TARGET=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/xgcc
-B/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/" "CFLAGS=-O0"
"CXXFLAGS=-g -O2 -pipe -DLIBICONV_PLUG " "CFLAGS_FOR_BUILD=-O0"
"CFLAGS_FOR_TARGET=-O0" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=install -m
0644" "INSTALL_PROGRAM=install -s -m 555" "INSTALL_SCRIPT=install -m 555"
"LDFLAGS=" "LIBCFLAGS=-O0" "LIBCFLAGS_FOR_TARGET=-O0" "MAKE=gmake"
"MAKEINFO=makeinfo --no-split --split-size=5000000 --split-size=5000000
--split-size=5000000" "SHELL=/bin/sh" "RUNTESTFLAGS=" "exec_prefix=/usr/local"
"infodir=/usr/local/share/info/gcc7" "libdir=/usr/local/lib/gcc7"
"includedir=/usr/local/include" "prefix=/usr/local"
"tooldir=/usr/local/powerpc64-portbld-freebsd12.0"
"gxx_include_dir=/usr/local/lib/gcc7/include/c++/"
"AR=/usr/local/powerpc64-portbld-freebsd12.0/bin/ar"
"AS=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/as"
"LD=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/collect-ld"
"RANLIB=/usr/local/powerpc64-portbld-freebsd12.0/bin/ranlib"
"NM=/usr/local/poudriere/ports/default/lang/gcc7/work/.build/./gcc/nm"
"NM_FOR_BUILD=" "NM_FOR_TARGET=/usr/local/powerpc64-portbld-freebsd12.0/bin/nm"
"DESTDIR=" "WERROR=" all-recursive
But the failing command is run strictly with -O2. If I just cd to
'/usr/local/poudriere/ports/default/lang/gcc7/work/.build/libiberty' and run it
manually, but change -O2 to -O0, it passes.
I can't find how to change -O level globally.
I currently set BOOT_CFLAGS="-O0" CFLAGS_FOR_TARGET="-O0"
CFLAGS_FOR_BUILD="-O0" STAGE_CFLAGS="-O0" STAGE2_CXXFLAGS="-O0"
STAGE2_CFLAGS="-O0" STAGE1_CXXFLAGS="-O0" STAGE1_CFLAGS="-O0" and it looks like
some files are compiled with -O0, but some commands still use -O2 (like the one
above). How can I set it to add -O0 everywhere?
>From gcc-bugs-return-635428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 07:27:26 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 07:27:00 -0000
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--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to darkkirb from comment #9)
> I have bisected the fix a bit (I didn't have enough time today to finish it)
> and i found that the fix has happened in one of the 322 commits between
>
> d1540be4d3b4b8ac6d19997539c13d2ca74f65e4 (2018-09-26, broken)
>
> and
>
> 44257478a8d157f8e0030bb7abe1c3ac91be9302 (2018-10-31, fixed)
>
> Hopefully the fix can be applied to the gcc-8_0 branch.
I already bisected that, see:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89497#c6
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Subject: [Bug fortran/89516] New: ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
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Bug ID: 89516
Summary: ICE in gfc_calculate_transfer_sizes at
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Apparently a very old surprise, test-case is simplified from:
gcc/testsuite/gfortran.dg/pr89266.f90:
$ cat ice.f90
program test
character(*), parameter :: n = ''
character(*), parameter :: o = transfer ([''], n)
end program test
$ gfortran ice.f90 -c -Wsurprising
f951: internal compiler error: Segmentation fault
0xdd0caf crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff7b79e0f ???
/usr/src/debug/glibc-2.29-2.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x7b1daa gfc_calculate_transfer_sizes(gfc_expr*, gfc_expr*, gfc_expr*, unsigned
long*, unsigned long*, unsigned long*)
/home/marxin/Programming/gcc/gcc/fortran/check.c:5506
0x7b1daa gfc_calculate_transfer_sizes(gfc_expr*, gfc_expr*, gfc_expr*, unsigned
long*, unsigned long*, unsigned long*)
/home/marxin/Programming/gcc/gcc/fortran/check.c:5470
0x7b1e58 gfc_check_transfer(gfc_expr*, gfc_expr*, gfc_expr*)
/home/marxin/Programming/gcc/gcc/fortran/check.c:5566
0x7eaa40 check_specific
/home/marxin/Programming/gcc/gcc/fortran/intrinsic.c:4634
0x7f4c7d gfc_intrinsic_func_interface(gfc_expr*, int)
/home/marxin/Programming/gcc/gcc/fortran/intrinsic.c:4870
0x84b7af resolve_unknown_f
/home/marxin/Programming/gcc/gcc/fortran/resolve.c:2873
0x84b7af resolve_function
/home/marxin/Programming/gcc/gcc/fortran/resolve.c:3211
0x84b7af gfc_resolve_expr(gfc_expr*)
/home/marxin/Programming/gcc/gcc/fortran/resolve.c:6866
0x7db2af gfc_reduce_init_expr(gfc_expr*)
/home/marxin/Programming/gcc/gcc/fortran/expr.c:2987
0x7de330 gfc_match_init_expr(gfc_expr**)
/home/marxin/Programming/gcc/gcc/fortran/expr.c:3035
0x7c9169 variable_decl
/home/marxin/Programming/gcc/gcc/fortran/decl.c:2788
0x7c9169 gfc_match_data_decl()
/home/marxin/Programming/gcc/gcc/fortran/decl.c:6015
0x827eef match_word
/home/marxin/Programming/gcc/gcc/fortran/parse.c:65
0x827eef decode_statement
/home/marxin/Programming/gcc/gcc/fortran/parse.c:376
0x82b82e next_free
/home/marxin/Programming/gcc/gcc/fortran/parse.c:1241
0x82b82e next_statement
/home/marxin/Programming/gcc/gcc/fortran/parse.c:1473
0x82cedb parse_spec
/home/marxin/Programming/gcc/gcc/fortran/parse.c:3865
0x82f87c parse_progunit
/home/marxin/Programming/gcc/gcc/fortran/parse.c:5680
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Subject: [Bug lto/87089] [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
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--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
Is Jason working on that? Can you please link a gcc-patches mailing list
discussion (if there's any).
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Is Jason working on that? Can you please link a gcc-patches mailing list
discussion (if there's any).
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Subject: [Bug lto/88585] [9 Regression] ICE in fld_incomplete_type_of, at tree.c:5295
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00684.html
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89514
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |88878
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fdebug-types-section isn't implemented for -flto and it doesn't really make
much sense for it. See PR88878. One possibility would be to ignore the option
but the workaround is to not use it.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88878
[Bug 88878] .debug_pubnames/types empty with -flto
>From gcc-bugs-return-635434-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:31:08 2019
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Subject: [Bug target/89203] Linux S/390: Unable to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
Date: Wed, 27 Feb 2019 08:31:00 -0000
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Martin Marko <m.marko08154711 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.2.0 |8.3.0
--- Comment #1 from Martin Marko <m.marko08154711 at gmail dot com> ---
Tried it again with GCC 8.3.0, still the same error.
Sry for pushing but is it possible to get a patch/workaround in the near future
as this is currently blocking us to update to C++17?
Thanks a lot for any help.
>From gcc-bugs-return-635435-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:33:04 2019
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
Date: Wed, 27 Feb 2019 08:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:38:47 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 08:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89490
--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't think users would appreciate the change in behavior where constant and
string merging would stop to work completely.
I've successfully bootstrapped/regtested the #c15 patch on powerpc64{,le}-linux
and it looks good to me.
>From gcc-bugs-return-635437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:41:39 2019
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Subject: [Bug tree-optimization/89280] [7/8/9 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 27 08:41:01 2019
New Revision: 269243
URL: https://gcc.gnu.org/viewcvs?rev=269243&root=gcc&view=rev
Log:
PR tree-optimization/89280
* tree-cfgcleanup.c (maybe_dead_abnormal_edge_p,
builtin_setjmp_setup_bb): New functions.
(cleanup_control_flow_pre): Ignore maybe_dead_abnormal_edge_p edges.
When visiting __builtin_setjmp_setup block, queue in special
setjmp_vec vector edges from .ABNORMAL_DISPATCHER to corresponding
__builtin_setjmp_receiver. Remove .ABNORMAL_DISPATCHER basic blocks
from visited after the loop if they don't have any visited successor
blocks.
* gcc.c-torture/compile/pr89280.c: New test.
* gcc.dg/torture/pr57147-2.c: Don't expect a setjmp after noreturn
function. Skip the test for -O0.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr89280.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/torture/pr57147-2.c
trunk/gcc/tree-cfgcleanup.c
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Subject: [Bug target/89203] Linux S/390: Unable to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is likely PR89361. As a workaround, just build a recent binutils first
(or use one from DTS) and build against that.
>From gcc-bugs-return-635439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:52:11 2019
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Subject: [Bug tree-optimization/89280] [7/8 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE: |[7/8 Regression] ICE:
|Segmentation fault (in |Segmentation fault (in
|is_gimple_reg_type) |is_gimple_reg_type)
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-635440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:56:23 2019
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Wed, 27 Feb 2019 08:56:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The crash is while compiling C+ code, and your CXXFLAGS still contains -O2:
"CXXFLAGS=-g -O2 -pipe -DLIBICONV_PLUG"
Try setting CXXFLAGS_FOR_TARGET.
>From gcc-bugs-return-635441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 08:58:16 2019
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Or the configure option --enable-cxx-flags="-O0 -g"
>From gcc-bugs-return-635442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:02:37 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #21 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45830
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45830&action=edit
proposed patch
>From gcc-bugs-return-635443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:03:13 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 09:03:00 -0000
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--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #6)
> Created attachment 45822 [details]
> Reduced test-case
>
> However, this reduced test-case fails with GCC-8 branch for all releases.
> Started on trunk with r256457 and was fixed on trunk r265421:
r265421 just make the bug latent.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Wed, 27 Feb 2019 09:03:00 -0000
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Piotr Kubaj from comment #7)
> But the failing command is run strictly with -O2. If I just cd to
> '/usr/local/poudriere/ports/default/lang/gcc7/work/.build/libiberty' and run
> it manually, but change -O2 to -O0, it passes.
Are you sure? The crash is in .build/powerpc64-portbld-freebsd12.0/libstdc++-v3
not .build/libiberty
Also, it seems that the new gcc-7 compiler is the one crashing here, which is
surprising. You've finished using the gcc-4.2.1 system compiler now, and I
wouldn't expect gcc-7 to crash on its own sources.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 09:07:00 -0000
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--- Comment #22 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Jakub Jelinek from comment #20)
> I don't think users would appreciate the change in behavior where constant
> and string merging would stop to work completely.
>
> I've successfully bootstrapped/regtested the #c15 patch on
> powerpc64{,le}-linux and it looks good to me.
Thanks Jakub,
It is not surprising that Alan hit the assert because when he modified the
patch and moved it the get_block_for_decl, that enabled mergable constants
to be inside a block, there are not DECLs for.
But I would like to pick up his idea to add an assertion as attachment #45830
I have bootstrapped that successfully, and built
and arm-linux-gnueabihf cross compiler (arm has section anchors IIRC).
I would be grateful if you could give it a try on you powerpc machine.
Bernd.
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 09:09:00 -0000
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--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #11)
> (In reply to Martin Liška from comment #6)
> > Created attachment 45822 [details]
> > Reduced test-case
> >
> > However, this reduced test-case fails with GCC-8 branch for all releases.
> > Started on trunk with r256457 and was fixed on trunk r265421:
>
> r265421 just make the bug latent.
Yep, I can confirm current trunk is affected with:
diff --git a/gcc/passes.def b/gcc/passes.def
index 446a7c48276..0816bfd7258 100644
--- a/gcc/passes.def
+++ b/gcc/passes.def
@@ -88,7 +88,6 @@ along with GCC; see the file COPYING3. If not see
NEXT_PASS (pass_merge_phi);
NEXT_PASS (pass_dse);
NEXT_PASS (pass_cd_dce);
- NEXT_PASS (pass_phiopt, true /* early_p */);
NEXT_PASS (pass_early_ipa_sra);
NEXT_PASS (pass_tail_recursion);
NEXT_PASS (pass_convert_switch);
>From gcc-bugs-return-635447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:10:26 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 45830
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45830
proposed patch
Please update the get_block_for_section function comment accordingly:
/* Return the object_block structure for section SECT. Create a new
structure if we haven't created one already. Return null if SECT
itself is null. */
This should say that we return NULL also for mergeable sections and why
- that section anchors can't be used in mergeable sections anyway, because the
linker might move objects around, and that using the object blocks
infrastructure in that case is both a waste and maintenance burden.
Given:
/* Don't use anchors for small data sections. The small data register
acts as an anchor for such sections. */
if (sect->common.flags & SECTION_SMALL)
return false;
we could do the same for SECTION_SMALL, but I'm not suggesting that ATM.
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Thanks for looking at this.
(In reply to kugan from comment #6)
> cmp w3, 0
> ble .L1
> sub w3, w3, #1
> mov x4, 0
> cntw x5
> ptrue p1.s, all
> lsr w3, w3, 1
> add w3, w3, 1
> whilelo p0.s, xzr, x3
> .p2align 3,,7
> .L3:
> ld2w {z4.s - z5.s}, p0/z, [x1, x4, lsl 2]
> ld2w {z2.s - z3.s}, p0/z, [x2, x4, lsl 2]
> add z0.s, z4.s, z2.s
> sub z1.s, z5.s, z3.s
> st2w {z0.s - z1.s}, p0, [x0, x4, lsl 2]
> whilelo p0.s, x5, x3
> incb x4, all, mul #2
> incw x5
> ptest p1, p0.b
> bne .L3
> .L1:
> ret
> .cfi_endproc
This doesn't look right. x4 is an index, so it should be
incremented by the number of words in two vectors, rather than
the number of bytes in two vectors.
>From gcc-bugs-return-635449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:12:14 2019
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Subject: [Bug lto/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 09:12:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
Minimal command line options:
$ gcc 1.i 2.i 3.i 4.i -fPIC -O2 -fno-semantic-interposition -flto=8 -shared
-finline-functions
during GIMPLE pass: vrp
3.i: In function ‘d’:
3.i:14:6: internal compiler error: Segmentation fault
14 | void d() {
| ^
0xc87e44 crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff7b79e0f ???
/usr/src/debug/glibc-2.29-2.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xd8b7e0 ptr_deref_may_alias_decl_p
/home/marxin/Programming/gcc/gcc/tree-ssa-alias.c:169
0xd90374 indirect_ref_may_alias_decl_p
/home/marxin/Programming/gcc/gcc/tree-ssa-alias.c:1155
0xd91335 refs_may_alias_p_1(ao_ref*, ao_ref*, bool)
/home/marxin/Programming/gcc/gcc/tree-ssa-alias.c:1499
0x9cbb5c gimple_fold_builtin_memory_op
/home/marxin/Programming/gcc/gcc/gimple-fold.c:927
0x9cdddb gimple_fold_builtin
/home/marxin/Programming/gcc/gcc/gimple-fold.c:3854
0x9cf1f8 gimple_fold_call
/home/marxin/Programming/gcc/gcc/gimple-fold.c:4354
0x9d02e2 fold_stmt_1
/home/marxin/Programming/gcc/gcc/gimple-fold.c:5019
0xcd2826 replace_uses_by(tree_node*, tree_node*)
/home/marxin/Programming/gcc/gcc/tree-cfg.c:2026
0xcd2de7 gimple_merge_blocks
/home/marxin/Programming/gcc/gcc/tree-cfg.c:2112
0x82097f merge_blocks(basic_block_def*, basic_block_def*)
/home/marxin/Programming/gcc/gcc/cfghooks.c:793
0xcdfd80 cleanup_tree_cfg_bb
/home/marxin/Programming/gcc/gcc/tree-cfgcleanup.c:719
0xce1348 cleanup_tree_cfg_noloop
/home/marxin/Programming/gcc/gcc/tree-cfgcleanup.c:905
0xce1348 cleanup_tree_cfg()
/home/marxin/Programming/gcc/gcc/tree-cfgcleanup.c:989
0xbb3917 execute_function_todo
/home/marxin/Programming/gcc/gcc/passes.c:1930
0xbb2ae2 do_per_function
/home/marxin/Programming/gcc/gcc/passes.c:1638
0xbb3c95 execute_todo
/home/marxin/Programming/gcc/gcc/passes.c:2031
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 09:15:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work|9.0 |
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|[8 Regression] ICE caused |[8/9 Regression] ICE caused
|by Segmentation Fault when |by Segmentation Fault when
|compiling cups 2.2.10 with |compiling cups 2.2.10 with
|LTO flags enabled |LTO flags enabled
Known to fail| |9.0
--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Fails due to a freed SSA NAME:
$1 = (tree) 0x7ffff78f2678
(gdb) p debug_tree(ptr)
<ssa_name 0x7ffff78f2678 nothrow var <var_decl 0x7ffff751d6c0 a>
def_stmt
version:2 in-free-list>
Let me take a look.
>From gcc-bugs-return-635451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:18:34 2019
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
Date: Wed, 27 Feb 2019 09:18:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-27
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, I have a patch fixing issues in DIE size and abbrev type calculation.
>From gcc-bugs-return-635452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:19:13 2019
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
Date: Wed, 27 Feb 2019 09:19:00 -0000
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Florian Weimer <fw at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |fw at gcc dot gnu.org
--- Comment #4 from Florian Weimer <fw at gcc dot gnu.org> ---
Is it really true that 64-bit PA-RISC lacks 64-bit atomics? That's … awkward.
>From gcc-bugs-return-635455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:22:56 2019
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Subject: [Bug libstdc++/77691] [7/8/9 regression] experimental/memory_resource/resource_adaptor.cc FAILs
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--- Comment #28 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #27)
> Fails with gcc-9 on hppa64-hp-hpux11.11.
What's the error in the libstdc++.log file?
>From gcc-bugs-return-635453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:22:19 2019
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Subject: [Bug target/89203] Linux S/390: Unable to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
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Andreas Krebbel <krebbel at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
I can confirm that this is caused by PR89361 as Jakub mentioned. With the fix
libgomp configures successfully with GCC 8 branch.
Would it be possible for you to just use GCC 8 from DTS?
Jakub: Could you please apply the patch also to GCC 8 branch?
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #24 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #23)
> Comment on attachment 45830 [details]
> proposed patch
>
> Please update the get_block_for_section function comment accordingly:
>
> /* Return the object_block structure for section SECT. Create a new
> structure if we haven't created one already. Return null if SECT
> itself is null. */
>
> This should say that we return NULL also for mergeable sections and why
> - that section anchors can't be used in mergeable sections anyway, because
> the linker might move objects around, and that using the object blocks
> infrastructure in that case is both a waste and maintenance burden.
I think we should also remove the test in default_use_anchors_for_symbol_p,
since:
sect = SYMBOL_REF_BLOCK (symbol)->sect;
will surely fault if the block is null. Agree the patch looks good
with those changes.
> Given:
> /* Don't use anchors for small data sections. The small data register
> acts as an anchor for such sections. */
> if (sect->common.flags & SECTION_SMALL)
> return false;
> we could do the same for SECTION_SMALL, but I'm not suggesting that ATM.
The idea was that the block infrastructure could also be used
at some future time to organise decls into a specific order,
e.g. to promote locality. Obviously that hasn't happened yet,
but I think we should keep the SECTION_SMALL stuff as-is and
only exclude decls that can't be put into blocks for correctness
reasons.
In general, the section anchor/section block stuff could probably
be cleaned up a lot now that unit-at-a-time is the only supported
mode. (That wasn't true when it was originally written.)
>From gcc-bugs-return-635456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:24:53 2019
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Maybe libstdc++ should just link to libatomic unconditionally for your target.
>From gcc-bugs-return-635457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:26:14 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 09:26:00 -0000
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rsandifo@gcc.gnu.org from comment #24)
> I think we should also remove the test in default_use_anchors_for_symbol_p,
> since:
>
> sect = SYMBOL_REF_BLOCK (symbol)->sect;
>
> will surely fault if the block is null. Agree the patch looks good
> with those changes.
Or add gcc_checking_assert in there as well (again with a comment that
get_block_for_section should have not created the block for those sections).
> The idea was that the block infrastructure could also be used
> at some future time to organise decls into a specific order,
> e.g. to promote locality. Obviously that hasn't happened yet,
> but I think we should keep the SECTION_SMALL stuff as-is and
> only exclude decls that can't be put into blocks for correctness
> reasons.
Ack.
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45831
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45831&action=edit
patch I am testing
>From gcc-bugs-return-635459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:28:11 2019
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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Wed, 27 Feb 2019 09:28:00 -0000
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--- Comment #10 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hi Jakub,
that does indeed fix the issue!
Thanks,
Tamar
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 09:36:00 -0000
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Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45830|0 |1
is obsolete| |
--- Comment #26 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45832
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45832&action=edit
proposed patch
updated comment.
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Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the test with -Wsurprising gives an ICE from 4.8 up to trunk (9.0).
Note that my instrumented compiler gives
../../work/gcc/fortran/check.c:5506:24: runtime error: store to null pointer of
type 'size_t'
for 9.0, i.e., in new code, while gcc8 gives
../../work/gcc/fortran/decl.c:1814:37: runtime error: member access within null
pointer of type 'struct gfc_expr'
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #27 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to rsandifo@gcc.gnu.org from comment #24)
>
> I think we should also remove the test in default_use_anchors_for_symbol_p,
> since:
>
> sect = SYMBOL_REF_BLOCK (symbol)->sect;
>
> will surely fault if the block is null. Agree the patch looks good
> with those changes.
>
The reason why there is no segfault here is the call site in expmed.c:
|| SYMBOL_REF_BLOCK (base) == NULL
|| !targetm.use_anchors_for_symbol_p (base))
But I am okay with adding a checking assert as suggested by Jakub.
(messages crossed mid-air, so I will update my patch a second time)
>From gcc-bugs-return-635463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:49:12 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89361] [7/8 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
Date: Wed, 27 Feb 2019 09:48:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 27 09:48:04 2019
New Revision: 269244
URL: https://gcc.gnu.org/viewcvs?rev=269244&root=gcc&view=rev
Log:
Backported from mainline
2019-02-18 Jakub Jelinek <jakub@redhat.com>
PR target/89361
* config/s390/s390.c (s390_indirect_branch_attrvalue,
s390_indirect_branch_settings): Define unconditionally.
(s390_set_current_function): Likewise, but guard the whole body except
the s390_indirect_branch_settings call with
#if S390_USE_TARGET_ATTRIBUTE.
(TARGET_SET_CURRENT_FUNCTION): Redefine unconditionally.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/s390/s390.c
>From gcc-bugs-return-635464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 09:54:28 2019
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Subject: [Bug target/89361] [7 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] s390 |[7 Regression] s390 broken
|broken without |without
|S390_USE_TARGET_ATTRIBUTE, |S390_USE_TARGET_ATTRIBUTE,
|likely since r257489 |likely since r257489
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.4+ too.
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Wed, 27 Feb 2019 09:57:00 -0000
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--- Comment #5 from Ciro Santilli <ciro.santilli at gmail dot com> ---
Ah awesome, thanks, %P works.
If anyone knows who is working on it / if there is a ticket to track it, let me
know.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Wed, 27 Feb 2019 09:58:00 -0000
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ktkachov at gcc dot gnu.org changed:
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CC| |gccbugzilla@limegreensocks.
| |com
--- Comment #6 from ktkachov at gcc dot gnu.org ---
(In reply to Ciro Santilli from comment #5)
> Ah awesome, thanks, %P works.
>
> If anyone knows who is working on it / if there is a ticket to track it, let
> me know.
I think David (CC'ed) was interested in this?
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Subject: [Bug c++/89488] [9 Regression] ICE in merge_exception_specifiers, at cp/typeck2.c:2395
Date: Wed, 27 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89488
--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Feb 27 10:02:23 2019
New Revision: 269245
URL: https://gcc.gnu.org/viewcvs?rev=269245&root=gcc&view=rev
Log:
/cp
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89488
* method.c (process_subob_fn): When maybe_instantiate_noexcept
returns false don't call merge_exception_specifiers.
/testsuite
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89488
* g++.dg/cpp0x/nsdmi15.C: New.
/cp
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88987
* parser.c (cp_parser_noexcept_specification_opt): Return NULL_TREE
for a non-constant parsed expression.
/testsuite
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88987
* g++.dg/cpp0x/pr88987.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/nsdmi15.C
trunk/gcc/testsuite/g++.dg/cpp0x/pr88987.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88987] [9 Regression] ICE: unexpected expression '(bool)sm' of kind implicit_conv_expr
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88987
--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Feb 27 10:02:23 2019
New Revision: 269245
URL: https://gcc.gnu.org/viewcvs?rev=269245&root=gcc&view=rev
Log:
/cp
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89488
* method.c (process_subob_fn): When maybe_instantiate_noexcept
returns false don't call merge_exception_specifiers.
/testsuite
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89488
* g++.dg/cpp0x/nsdmi15.C: New.
/cp
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88987
* parser.c (cp_parser_noexcept_specification_opt): Return NULL_TREE
for a non-constant parsed expression.
/testsuite
2019-02-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/88987
* g++.dg/cpp0x/pr88987.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/nsdmi15.C
trunk/gcc/testsuite/g++.dg/cpp0x/pr88987.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:17:22 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 10:17:00 -0000
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Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45832|0 |1
is obsolete| |
--- Comment #28 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45833
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45833&action=edit
proposed patch
addressed review comments.
>From gcc-bugs-return-635470-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:22:31 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 10:22:00 -0000
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--- Comment #29 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Either the
/* Don't use anchors for mergeable sections. The linker might move
the objects around. */
comment should be dropped, or the two comments in
default_use_anchors_for_symbol_p should be merged into one.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89488] [9 Regression] ICE in merge_exception_specifiers, at cp/typeck2.c:2395
Date: Wed, 27 Feb 2019 10:26:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
>From gcc-bugs-return-635472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:27:32 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88987] [9 Regression] ICE: unexpected expression '(bool)sm' of kind implicit_conv_expr
Date: Wed, 27 Feb 2019 10:27:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
>From gcc-bugs-return-635473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:31:00 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 10:30:00 -0000
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--- Comment #30 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #29)
> Either the
> /* Don't use anchors for mergeable sections. The linker might move
> the objects around. */
> comment should be dropped, or the two comments in
> default_use_anchors_for_symbol_p should be merged into one.
I'd drop that comment, since "linker might move objects around" is
in the big comment now.
Is the other assert clear enough or does it also need a comment?
>From gcc-bugs-return-635474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:41:41 2019
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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89517] New: [8/9 Regression] AArch64's configure option --with-arch can silently lead to incorrectly configured compiler
Date: Wed, 27 Feb 2019 10:41:00 -0000
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Bug ID: 89517
Summary: [8/9 Regression] AArch64's configure option
--with-arch can silently lead to incorrectly
configured compiler
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: tnfchris at gcc dot gnu.org
Target Milestone: ---
The options definition file for aarch64 is parsed by a series of regular
expressions and sed calls in config.gcc based on a couple of hard rules.
One of them is that all the options should be on one line. From GCC 8 the
lines
were broken up and wrapped to 80 characters but this lead the grep statements
to only select the first line from the options.
This leads to the compiler silently enabling only a subset of features or none
at all when you use --with-arch during configure.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #31 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #30)
> (In reply to Jakub Jelinek from comment #29)
> > Either the
> > /* Don't use anchors for mergeable sections. The linker might move
> > the objects around. */
> > comment should be dropped, or the two comments in
> > default_use_anchors_for_symbol_p should be merged into one.
>
> I'd drop that comment, since "linker might move objects around" is
> in the big comment now.
Ok.
> Is the other assert clear enough or does it also need a comment?
I think it is ok as is.
>From gcc-bugs-return-635476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 10:57:26 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 10:57:00 -0000
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Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
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----------------------------------------------------------------------------
Attachment #45833|0 |1
is obsolete| |
--- Comment #32 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 45834
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45834&action=edit
proposed patch
addressed review comments.
I'll bootstrap/regtest that once more and send it to the ML in the afternoon.
Thanks everybody!
>From gcc-bugs-return-635477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:26:27 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89466] [7/8/9 Regression] Accessing the Internet while boostrapping
Date: Wed, 27 Feb 2019 11:26:00 -0000
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--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Feb 27 11:25:44 2019
New Revision: 269249
URL: https://gcc.gnu.org/viewcvs?rev=269249&root=gcc&view=rev
Log:
PR libstdc++/89466 avoid slow xsltproc command in configure
Certain broken versions of xsltproc ignore the --nonet option and will
attempt to fetch the docbook stylesheet from the WWW when it isn't in
the local XML catalog.
This patch checks for the local stylesheet directory first, and doesn't
use xsltproc if no local stylesheets are found. Checking for the local
directory is done using xmlcatalog if available, only checking the
hardcoded list of directories if xmlcatalog fails. The right directory
for Suse is added to the hardcoded list.
This should avoid doing an xsltproc check that would need to download
the stylesheet, so no network connection is made even if a broken
xsltproc is present.
PR libstdc++/89466
* acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
stylesheet directories before check for xsltproc. Try to use
xmlcatalog to find local stylesheet directory before trying hardcoded
paths. Add path used by suse to hardcoded paths. Adjust xsltproc
check to look for the same stylesheet as doc/Makefile.am uses. Don't
use xsltproc if xmlcatalog fails to find a local stylesheet.
* configure.ac: Check for xmlcatalog.
* Makefile.in: Regenerate.
* configure: Likewise.
* doc/Makefile.in: Likewise.
* include/Makefile.in: Likewise.
* libsupc++/Makefile.in: Likewise.
* po/Makefile.in: Likewise.
* python/Makefile.in: Likewise.
* src/Makefile.in: Likewise.
* src/c++11/Makefile.in: Likewise.
* src/c++17/Makefile.in: Likewise.
* src/c++98/Makefile.in: Likewise.
* src/filesystem/Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/Makefile.in
trunk/libstdc++-v3/acinclude.m4
trunk/libstdc++-v3/configure
trunk/libstdc++-v3/configure.ac
trunk/libstdc++-v3/doc/Makefile.in
trunk/libstdc++-v3/include/Makefile.in
trunk/libstdc++-v3/libsupc++/Makefile.in
trunk/libstdc++-v3/po/Makefile.in
trunk/libstdc++-v3/python/Makefile.in
trunk/libstdc++-v3/src/Makefile.in
trunk/libstdc++-v3/src/c++11/Makefile.in
trunk/libstdc++-v3/src/c++17/Makefile.in
trunk/libstdc++-v3/src/c++98/Makefile.in
trunk/libstdc++-v3/src/filesystem/Makefile.in
trunk/libstdc++-v3/testsuite/Makefile.in
>From gcc-bugs-return-635478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:37:57 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 11:37:00 -0000
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--- Comment #33 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've started bootstrap/regtest of this on powerpc64{,le}-linux (on
CompileFarm).
>From gcc-bugs-return-635479-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:41:13 2019
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From: "arnaud02 at users dot sourceforge.net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89518] New: missed optimisation for array address calculations
Date: Wed, 27 Feb 2019 11:41:00 -0000
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Bug ID: 89518
Summary: missed optimisation for array address calculations
Product: gcc
Version: 8.3.0
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Considering:
int f(int index, int stride) {
const int i1 = index / stride;
const int i2 = index % stride;
const int index2 = i1*stride+i2;
return index2; // expect: index2 = index
}
gcc 8.3 with "-O3" on x84_64 emits:
f(int, int):
mov eax, edi
cdq
idiv esi
imul eax, esi
add eax, edx
ret
By contrast, clang 7 with "-O3" emits
f(int, int):
mov eax, edi
ret
MSVC 2017 with "/O2" emits:
int f(int,int)
mov eax, ecx
ret 0
Is there a way to persuade gcc to simplify this expression at compile time?
>From gcc-bugs-return-635480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:45:04 2019
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Subject: [Bug middle-end/89503] Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-27
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45835
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45835&action=edit
gcc9-pr89503.patch
I think we shouldn't checksum the TREE_NO_WARNING bit.
>From gcc-bugs-return-635482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:46:15 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89361] [7 Regression] s390 broken without S390_USE_TARGET_ATTRIBUTE, likely since r257489
Date: Wed, 27 Feb 2019 11:46:00 -0000
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Martin Marko <m.marko08154711 at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |m.marko08154711 at gmail dot com
--- Comment #6 from Martin Marko <m.marko08154711 at gmail dot com> ---
*** Bug 89203 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:46:15 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89203] Linux S/390: Unable to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
Date: Wed, 27 Feb 2019 11:46:00 -0000
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Martin Marko <m.marko08154711 at gmail dot com> changed:
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--- Comment #4 from Martin Marko <m.marko08154711 at gmail dot com> ---
Awesome!
This patch was indeed solving this issue of building.
Just an additional note: we do not use the DTS version as we apply some custom
patches as well.
I changing the issue state to resolved/duplicate in favor to #89361, which is
more specific.
Thank you so much for your help on this one.
*** This bug has been marked as a duplicate of bug 89361 ***
>From gcc-bugs-return-635483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 11:54:49 2019
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Subject: [Bug tree-optimization/89518] missed optimisation for array address calculations
Date: Wed, 27 Feb 2019 11:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89518
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-27
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
We do not have a (a / b) * b + (a % b) simplification rule. The following adds
one:
Index: gcc/match.pd
===================================================================
--- gcc/match.pd (revision 269242)
+++ gcc/match.pd (working copy)
@@ -2729,6 +2729,13 @@ (define_operator_list COND_TERNARY
(mult (convert1? (exact_div @0 @@1)) (convert2? @1))
(convert @0))
+/* Simplify (A / B) * B + (A % B) -> A. */
+(for div (trunc_div ceil_div floor_div round_div)
+ mod (trunc_mod ceil_mod floor_mod round_mod)
+ (simplify
+ (plus:c (mult:c (div @0 @1) @1) (mod @0 @1))
+ @0))
+
/* ((X /[ex] A) +- B) * A --> X +- A * B. */
(for op (plus minus)
(simplify
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Subject: [Bug target/89517] [8/9 Regression] AArch64's configure option --with-arch can silently lead to incorrectly configured compiler
Date: Wed, 27 Feb 2019 11:57:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64
Priority|P3 |P2
Target Milestone|--- |8.4
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
Date: Wed, 27 Feb 2019 11:59:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 27 11:59:07 2019
New Revision: 269250
URL: https://gcc.gnu.org/viewcvs?rev=269250&root=gcc&view=rev
Log:
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/89514
* dwarf2out.c (size_of_die): Key on AT_ref (a)->comdat_type_p
rather than on use_debug_types, doing what output_die does.
(value_format): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
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Subject: [Bug lto/87525] [7/8/9 Regression] infinite loop generated for fread() if enabling -flto and -D_FORTIFY_SOURCE=2
Date: Wed, 27 Feb 2019 12:02:00 -0000
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--- Comment #21 from Martin Jambor <jamborm at gcc dot gnu.org> ---
After a bit more thinking, I found a better spot where to treat extern inline
functions differently, I have proposed a patch in the mailing list:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg02049.html
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar, will backport together with the -fdebug-types-section fix
for PR88878.
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Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 12:06:00 -0000
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--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
There's a more readable test-case:
$ echo =1= && cat 1.i && echo =2= && cat 2.i && echo =3= && cat 3.i && echo =4=
&& cat 4.i
=1=
int guard;
int cupsArraySave() {
if (guard)
return 0;
else
return 1;
}
=2=
int *get_null() { return 0; }
=3=
unsigned long _cups_strlcpy(char *, char *, long);
typedef struct {
char array[81];
} container;
container *get();
container *get_null();
container c;
void d() {
container *a = get();
for (; a; a = get_null()) {
cupsArraySave();
_cups_strlcpy(a->array, c.array, sizeof(c.array));
}
}
=4=
unsigned long _cups_strlcpy(char *dest, char *src, long len) {
unsigned long len2 = __builtin_strlen(src);
if (len2 > len)
len2 = len;
__builtin_memmove(dest, src, len2);
}
We ICE in tree-vrp where:
SSA form after inserting ASSERT_EXPRs
d ()
{
int D.4365;
long unsigned int len2;
int * D.4357;
struct container * a;
char[81] * _1;
int _18;
int _19;
<bb 2> [local count: 118111600]:
a_6 = get ();
goto <bb 9>; [100.00%]
<bb 3> [local count: 955630223]:
a_10 = ASSERT_EXPR <a_2, a_2 != 0B>;
_18 = guard;
if (_18 != 0)
goto <bb 5>; [50.00%]
else
goto <bb 4>; [50.00%]
<bb 4> [local count: 477815111]:
<bb 5> [local count: 955630223]:
# _19 = PHI <0(3), 1(4)>
_1 = &a_10->array;
len2_15 = __builtin_strlen (&c.array);
if (len2_15 > 81)
goto <bb 6>; [50.00%]
else
goto <bb 11>; [50.00%]
<bb 11> [local count: 477815112]:
len2_23 = ASSERT_EXPR <len2_15, len2_15 <= 81>;
goto <bb 7>; [100.00%]
<bb 6> [local count: 477815111]:
len2_14 = ASSERT_EXPR <len2_15, len2_15 > 81>;
<bb 7> [local count: 955630223]:
# len2_17 = PHI <81(6), len2_23(11)>
__builtin_memmove (_1, &c.array, len2_17);
<bb 8> [local count: 955630223]:
# a_20 = PHI <0B(7)>
goto <bb 10>; [100.00%]
<bb 9> [local count: 118111601]:
# a_2 = PHI <a_6(2)>
if (a_2 != 0B)
goto <bb 3>; [97.00%]
else
goto <bb 10>; [3.00%]
<bb 10> [local count: 118111601]:
return;
}
...
Visiting statement:
_1 = &a_2->array;
LKUP STMT len2_15 = __builtin_strlen (&c.array) with .MEM_11
<<<< COPY _19 = 0
Registering jump thread: (3, 5) incoming edge; (5, 11) normal;
<<<< STMT 0 = a_2 eq_expr 0B
<<<< STMT 1 = a_2 ne_expr 0B
<<<< COPY a_10 = a_2
Threaded jump 4 --> 5 to 12
Threaded jump 3 --> 5 to 12
Removing basic block 5
;; basic block 5, loop depth 0
;; pred:
# _19 = PHI <>
_1 = &a_2->array;
len2_15 = __builtin_strlen (&c.array);
if (0 != 0)
goto <bb 6>; [100.00%]
else
goto <bb 11>; [0.00%]
;; succ: 6
;; 11
...
after the BB removal we end up with:
(gdb) p debug_function(cfun->decl, 0)
d ()
{
int D.4365;
long unsigned int len2;
int * D.4357;
struct container * a;
char[81] * _1;
int _18;
int _19;
int _24;
char[81] * _25;
<bb 2> [local count: 118111601]:
a_6 = get ();
if (a_6 != 0B)
goto <bb 3>; [97.00%]
else
goto <bb 10>; [3.00%]
<bb 3> [local count: 955630223]:
_18 = guard;
if (_18 != 0)
goto <bb 12>; [50.00%]
else
goto <bb 4>; [50.00%]
<bb 4> [local count: 477815111]:
goto <bb 12>; [100.00%]
<bb 11> [local count: 477815112]:
<bb 7> [local count: 955630223]:
# len2_17 = PHI <len2_15(12)>
__builtin_memmove (_1, &c.array, len2_17);
<bb 8> [local count: 955630223]:
<bb 10> [local count: 118111601]:
return;
<bb 12> [local count: 477815112]:
# _24 = PHI <1(4), 0(3)>
_25 = &a_6->array;
len2_26 = __builtin_strlen (&c.array);
goto <bb 7>; [100.00%]
}
Note that _1 has missing definition.
And we segfault in cleanup_tree_cfg_bb where we're trying to fold
__builtin_memmove (_1, &c.array, len2_17);
Am I correct that the bb removal should propagate _1 into the
__builtin_memmove?
Maybe a broken DEF-USE chain?
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Subject: [Bug target/89504] Checking ICE in 'gcc.dg/rtl/x86_64/pro_and_epilogue.c'
Date: Wed, 27 Feb 2019 12:08:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps run_rtl_passes or something similar needs to avoid DF verification when
DF has not been constructed yet and starting with a pass that needs it, or
something similar?
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Subject: [Bug libstdc++/89466] [7/8 Regression] Accessing the Internet while boostrapping
Date: Wed, 27 Feb 2019 12:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89466
--- Comment #18 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Could you check r269249 on trunk? It's a bit different to the patch I suggested
earlier, but should still solve the problem.
>From gcc-bugs-return-635491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 12:42:11 2019
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Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 12:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89497
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|marxin at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the issue is that CFG cleanup has to run before update_ssa and update_ssa
will have the job to replace _1 with _25. But then BB merging done as part
of later cleanup ends up folding stmts with out-of-date SSA form. We have
/* Start by iterating over all basic blocks in PRE order looking for
edge removal opportunities. Do this first because incoming SSA form
may be invalid and we want to avoid performing SSA related tasks such
as propgating out a PHI node during BB merging in that state. */
retval |= cleanup_control_flow_pre ();
but regular SSA update is still not done here.
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Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 12:48:00 -0000
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45836
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45836&action=edit
patch I am testing
So we can now properly "order" CFG cleanup and SSA update by interleaving them.
There's the slight chance that we run update_ssa twice, but the comment looks
outdated and I wonder what would trigger it:
/* When cleanup_tree_cfg merges consecutive blocks, it may
perform some simplistic propagation when removing single
valued PHI nodes. This propagation may, in turn, cause the
SSA form to become out-of-date (see PR 22037). So, even
if the parent pass had not scheduled an SSA update, we may
still need to do one. */
if (!(flags & TODO_update_ssa_any) && need_ssa_update_p (cfun))
flags |= TODO_update_ssa;
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Subject: [Bug fortran/53481] Allow for gfortran (f951) specs option
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WONTFIX
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> No activity for more than three years. Is anybody interested or
> should this PR closed as WONTFIX?
Three years later closing as WONTFIX.
>From gcc-bugs-return-635494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 12:51:50 2019
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Subject: [Bug tree-optimization/89518] missed optimisation for array address calculations
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> We do not have a (a / b) * b + (a % b) simplification rule.
Indeed. That's surprising since we do have for trunc_div
/* X - (X / Y) * Y is the same as X % Y. */
>From gcc-bugs-return-635495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 12:52:20 2019
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Subject: [Bug debug/88878] .debug_pubnames/types empty with -flto
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 27 12:51:43 2019
New Revision: 269251
URL: https://gcc.gnu.org/viewcvs?rev=269251&root=gcc&view=rev
Log:
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (output_comdat_type_unit): Add early_lto_debug
parameter, prefix section name with .gnu.debuglto_ if true.
(dwarf2out_finish): Pass false to output_comdat_type_unit.
(dwarf2out_early_finish): Pass true to output_comdat_type_unit.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
>From gcc-bugs-return-635496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 13:27:26 2019
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Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Wed, 27 Feb 2019 13:27:00 -0000
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--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
GIMPLE testcase that doesn't fail, possibly because of NOPs or because of
missing range info or whatever...
typedef struct {
char array[81];
} container;
container *get();
int guard = 0;
container c;
void __GIMPLE (startwith("vrp1"))
d ()
{
long unsigned int len2;
container * a;
char * _1;
int _18;
int i_19;
bb_2:
a_6 = get ();
if (a_6 != _Literal (struct container *) 0)
goto bb_3;
else
goto bb_8;
bb_3:
_18 = guard;
if (_18 != 0)
goto bb_5;
else
goto bb_4;
bb_4:
;
bb_5:
i_19 = __PHI (bb_3: 0, bb_4: 1);
_1 = &a_6->array[0];
len2_15 = __builtin_strlen (&c.array);
if (len2_15 > 81ul)
goto bb_6;
else
goto bb_7;
bb_6:
;
bb_7:
len2_17 = __PHI (bb_5: len2_15, bb_6: 81ul);
__builtin_memmove (_1, &c.array, len2_17);
bb_8:
return;
}
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fdebug-types-section now work as expected.
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Subject: [Bug c++/89513] constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45837
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45837&action=edit
gcc9-pr89513.patch
Untested fix. Unless we want to go ahead and implement P1002R1 right now, of
course. And if we do, the question is if we should just accept it everywhere
with a pedwarn.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 13:59:00 -0000
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--- Comment #34 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #33)
> I've started bootstrap/regtest of this on powerpc64{,le}-linux (on
> CompileFarm).
Passed bootstrap/regtest on powerpc64le-linux, on powerpc64-linux passed
bootstrap, regtest still ongoing.
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Subject: [Bug debug/88878] .debug_pubnames/types empty with -flto
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 27 14:04:18 2019
New Revision: 269253
URL: https://gcc.gnu.org/viewcvs?rev=269253&root=gcc&view=rev
Log:
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (use_debug_types): Disable when in_lto_p.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
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Subject: [Bug ipa/88235] [7/8/9 Regression] ICE: verify_cgraph_node failed (error: edge points to wrong declaration)
Date: Wed, 27 Feb 2019 14:10:00 -0000
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--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I have looked at this a bit more and the problem is that thunk
inlining expands a thunk which then makes the clone_of_p() part of
cgraph_edge::verify_corresponds_to_fndecl() fail.
I must say that I found the inlining decision that does the expansion
a bit unexpected:
#2 0x0000000001a53ace in inline_small_functions () at
/home/mjambor/gcc/icln/src/gcc/ipa-inline.c:2073
2073 inline_call (edge, true, &new_indirect_edges,
&overall_size, true);
(gdb) p edge
$26 = <cgraph_edge _ZThn8_N8ItemView5eventEv/14 -> *.LTHUNK0/13>
where _ZThn8_N8ItemView5eventEv/14 is a real thunk and *.LTHUNK0/13 is
an alias to the real method. The thing is that the thunk has no
(known) callers:
(gdb) p edge->caller->callers
$29 = <cgraph_edge NULL>
Is that intentional? Do we want to inline functions into their thunks
even that thunk is not itself inlined into anything?
Also, the code in clone_of_p assumes that each thunk has one callee,
which seems to be in start contrast with the comment and code in
inline_call():
/* When thunk is instrumented we may have multiple callees. */
for (e = to->callees; e && e->callee != target; e = e->next_callee)
;
>From gcc-bugs-return-635502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 14:43:25 2019
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #6 from dave.anglin at bell dot net ---
On 2019-02-27 4:19 a.m., fw at gcc dot gnu.org wrote:
> Is it really true that 64-bit PA-RISC lacks 64-bit atomics? That's … awkward.
PA-RISC only has two atomic instructions (ldcw and ldcd). These are
insufficient to implement
a full set of 32-bit atomics without kernel support.
In the 32-bit runtime, we can't in general use the ldd and std instructions as
the upper 32 register
bits are not guaranteed to be preserved during context switches. So, one has
to use 64-bit floating
point loads and stores to ensure the operation operates atomically on memory.Â
This makes 64-bit
atomics really ugly with a 32-bit kernel.
We have implemented a kernel helper to implement atomic support on linux.Â
There is no documented
kernel helper on hpux although I believe HP implemented pthread support using
light weight system
calls. Using a kernel helper, tends to make atomics very slow when there is
contention.
I tend to think using 64-bit atomics on 32-bit architectures is not a good
idea.
Dave
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Subject: [Bug target/70341] [7/8/9 Regression] cost model for addresses is incorrect, slsr is using reg + reg + CST for arm
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 27 14:50:35 2019
New Revision: 269255
URL: https://gcc.gnu.org/viewcvs?rev=269255&root=gcc&view=rev
Log:
PR target/70341
* config/arm/arm.md (arm_casesi_internal): New define_expand. Rename
old define_insn to ...
(*arm_casesi_internal): ... this. Add mode to LABEL_REFs.
* config/arm/thumb2.md (thumb2_casesi_internal): New define_expand.
Rename old define_insn to ...
(*thumb2_casesi_internal): ... this. Add mode to LABEL_REFs.
(thumb2_casesi_internal_pic): New define_expand. Rename old
define_insn to ...
(*thumb2_casesi_internal_pic): ... this. Add mode to LABEL_REFs.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
trunk/gcc/config/arm/thumb2.md
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #7 from dave.anglin at bell dot net ---
On 2019-02-27 4:24 a.m., redi at gcc dot gnu.org wrote:
> Maybe libstdc++ should just link to libatomic unconditionally for your target.
Yes, I'm trying that in current build. The issue is certain functions are
implemented inline on most
architectures but not on hppa-hpux.
There are a couple of other tests in the same boat.
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Subject: [Bug tree-optimization/89280] [7/8 Regression] ICE: Segmentation fault (in is_gimple_reg_type)
Date: Wed, 27 Feb 2019 15:22:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 27 15:22:16 2019
New Revision: 269256
URL: https://gcc.gnu.org/viewcvs?rev=269256&root=gcc&view=rev
Log:
PR tree-optimization/89280
* gcc.dg/torture/pr57147-2.c (SetNaClSwitchExpectations): Add static
keyword.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/torture/pr57147-2.c
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Subject: [Bug c++/89519] New: POD data member fails to be packed; G++ incorrectly claims it is non-POD
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Bug ID: 89519
Summary: POD data member fails to be packed; G++ incorrectly
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Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at mattwhitlock dot name
Target Milestone: ---
/* === BEGIN TEST CASE === */
#include <type_traits>
class S {
int i;
};
struct P {
char c;
S s;
} __attribute__ ((packed));
static_assert(std::is_pod<S>::value, "S should be a POD type");
static_assert(sizeof(P) == sizeof(char) + sizeof(S), "P should be packed");
/* === END TEST CASE === */
$ g++ -c test.cpp
test.cpp:9:4: warning: ignoring packed attribute because of unpacked non-POD
field 'S P::s'
S s;
^
test.cpp:13:25: error: static assertion failed: P should be packed
static_assert(sizeof(P) == sizeof(char) + sizeof(S), "P should be packed");
~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
As you can see, S is indeed a POD type, as evidenced by std::is_pod<S>::value
being true, yet the compiler fails to pack it.
This may be due to a discrepancy between C++'s definition of a POD type and
G++'s internal concept of "POD for the purpose of layout," as explained in Bug
83732 Comment 3.
Workaround: changing the access control of S::i to public (for example by
changing "class S" to "struct S") makes G++ pack P::s correctly. However, this
should not be necessary, as the standard only requires all non-static data
members in a standard-layout type to have the *same* access control, which need
not be public.
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 15:52:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Unfortunately the patch regresses:
+FAIL: c-c++-common/torture/builtin-arith-overflow-1.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-1.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-12.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-12.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-13.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-13.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-2.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-2.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-p-12.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-p-12.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-p-13.c -O2 execution test
+FAIL: c-c++-common/torture/builtin-arith-overflow-p-13.c -O2 -flto
-fno-use-linker-plugin -flto-partition=none execution test
Looking at the first one, the differences are like:
t104_4ssub:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
- mov r3, #-2147483648
- subs r0, r0, r3
+ adds r0, r0, #-2147483648
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Wed, 27 Feb 2019 15:56:00 -0000
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--- Comment #8 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Feb 27 15:56:04 2019
New Revision: 269259
URL: https://gcc.gnu.org/viewcvs?rev=269259&root=gcc&view=rev
Log:
PR target/89397
* config/i386/i386.c (ix86_atomic_assign_expand_fenv): Check
TARGET_SSE in addition to TARGET_SSE_MATH.
(ix86_excess_precision): Ditto.
(ix86_float_exceptions_rounding_supported_p): Ditto.
(use_rsqrt_p): Ditto.
* config/i386/sse.md (rsqrt<mode>2): Ditto.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/config/i386/sse.md
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 16:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org,
| |rearnsha at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm afraid I don't understand how the cmpsi2_cmpneg pattern can ever work
reliably. It uses CCmode, so I think that means all of Z, N, C and V flags
have to be useful, but while the Z and N flags really don't care whether adds
or subs is used, I believe C and V depend on that heavily.
So, I'd understand cmpsi2_addneg pattern with CCmode that would only have the
subs alternative, and another pattern with CC_NOOVmode that would have both.
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Subject: [Bug c++/88857] [7/8/9 Regression] ICE in build_value_init
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
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Subject: [Bug c/89520] New: ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Wed, 27 Feb 2019 17:23:00 -0000
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Bug ID: 89520
Summary: ICE tree check: accessed operand 4 of call_expr with 3
operands in convert_to_integer_1, at convert.c:668
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Affects versions down to at least gcc-4.1, at -O[gs123] :
(which means: compiles at -O0)
$ cat z1.c
double ceil ();
double floor ();
double trunc ();
long aceil () { return ceil (); }
long afloor () { return floor (); }
long atrunc () { return trunc (); }
$ gcc-9-20190224 -c z1.c -O2
z1.c: In function 'aceil':
z1.c:4:24: warning: too few arguments to built-in function 'ceil' expecting 1
[-Wbuiltin-declaration-mismatch]
4 | long aceil () { return ceil (); }
| ^~~~
z1.c:1:8: note: declared here
1 | double ceil ();
| ^~~~
z1.c:4:1: internal compiler error: tree check: accessed operand 4 of call_expr
with 3 operands in convert_to_integer_1, at convert.c:668
4 | long aceil () { return ceil (); }
| ^~~~
0x5cfb6c tree_operand_check_failed(int, tree_node const*, char const*, int,
char const*)
../../gcc/tree.c:10059
0x7c49d6 tree_operand_check(tree_node*, int, char const*, int, char const*)
../../gcc/tree.h:3676
0x7c49d6 convert_to_integer_1
../../gcc/convert.c:668
0x65cc8b convert(tree_node*, tree_node*)
../../gcc/c/c-convert.c:125
0x69cca5 convert_and_check(unsigned int, tree_node*, tree_node*)
../../gcc/c-family/c-common.c:1641
0x635362 convert_for_assignment
../../gcc/c/c-typeck.c:6812
0x6387d0 c_finish_return(unsigned int, tree_node*, tree_node*)
../../gcc/c/c-typeck.c:10568
0x68345a c_parser_statement_after_labels
../../gcc/c/c-parser.c:5523
0x684ffe c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:5148
0x685786 c_parser_compound_statement
../../gcc/c/c-parser.c:4982
0x68706b c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:2354
0x68f633 c_parser_external_declaration
../../gcc/c/c-parser.c:1653
0x6900f9 c_parser_translation_unit
../../gcc/c/c-parser.c:1534
0x6900f9 c_parse_file()
../../gcc/c/c-parser.c:19854
0x6f0110 c_common_parse_file()
../../gcc/c-family/c-opts.c:1155
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 17:27:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45838
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45838&action=edit
gcc9-pr89506.patch
Untested version.
With this one, e.g. that t104_4ssub changes compared to vanilla:
-mov r3, #-2147483648
-subs r0, r0, r3
+subs r0, r0, #2147483648
so if that works, would be actually an improvement.
On the other side, there are some changes where the code is larger with the
patch:
-adds r0, r0, #1
+mvn r3, #0
+subs r0, r0, r3
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Subject: [Bug c/89521] New: ICE in expand_builtin_int_roundingfn, at builtins.c:2697
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89521
Bug ID: 89521
Summary: ICE in expand_builtin_int_roundingfn, at
builtins.c:2697
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
A variation of pr89520 (closely related, but possibly valid) :
$ cat z1.c
double ceil ();
double floor ();
long aceil () { return ceil (1); }
long afloor () { return floor (1); }
$ gcc-9-20190224 -c z1.c -O2
z1.c: In function 'aceil':
z1.c:3:30: warning: 'ceil' argument 1 type is 'int' where 'double' is expected
in a call to built-in function declared without prototype
[-Wbuiltin-declaration-mismatch]
3 | long aceil () { return ceil (1); }
| ^
z1.c:1:8: note: built-in 'ceil' declared here
1 | double ceil ();
| ^~~~
z1.c: In function 'afloor':
z1.c:4:32: warning: 'floor' argument 1 type is 'int' where 'double' is expected
in a call to built-in function declared without prototype
[-Wbuiltin-declaration-mismatch]
4 | long afloor () { return floor (1); }
| ^
z1.c:2:8: note: built-in 'floor' declared here
2 | double floor ();
| ^~~~~
during RTL pass: expand
z1.c: In function 'aceil':
z1.c:3:24: internal compiler error: in expand_builtin_int_roundingfn, at
builtins.c:2697
3 | long aceil () { return ceil (1); }
| ^~~~~~~~
0x73714c expand_builtin_int_roundingfn
../../gcc/builtins.c:2697
0x74c390 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc/builtins.c:7332
0x8a9b86 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:11029
0x8b5936 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc/expr.c:5673
0x8b7228 expand_assignment(tree_node*, tree_node*, bool)
../../gcc/expr.c:5436
0x772112 expand_call_stmt
../../gcc/cfgexpand.c:2722
0x772112 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3691
0x772112 expand_gimple_stmt
../../gcc/cfgexpand.c:3850
0x774cd8 expand_gimple_tailcall
../../gcc/cfgexpand.c:3897
0x774cd8 expand_gimple_basic_block
../../gcc/cfgexpand.c:5863
0x77abde execute
../../gcc/cfgexpand.c:6509
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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89522] New: [8/9 Regression] ICE: trying to capture 'f' in instantiation of generic lambda
Date: Wed, 27 Feb 2019 17:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89522
Bug ID: 89522
Summary: [8/9 Regression] ICE: trying to capture 'f' in
instantiation of generic lambda
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Changed between 20190113 (error) and 20190120 (ICE) :
$ cat z1.cc
template <typename F>
void foo (F f)
{
f (1);
}
template <typename T>
void bar (T)
{
auto f = [&](auto i) { if (f); };
foo (f);
}
int main ()
{
bar (0);
}
$ g++-9-20190224 -c z1.cc
z1.cc: In instantiation of 'bar(T) [with T = int]::<lambda(auto:1)> [with
auto:1 = int]':
z1.cc:4:5: required from 'void foo(F) [with F = bar(T) [with T =
int]::<lambda(auto:1)>]'
z1.cc:10:7: required from 'void bar(T) [with T = int]'
z1.cc:14:9: required from here
z1.cc:9:30: internal compiler error: trying to capture 'f' in instantiation of
generic lambda
9 | auto f = [&](auto i) { if (f); };
| ^
0x723c84 add_capture(tree_node*, tree_node*, tree_node*, bool, bool)
../../gcc/cp/lambda.c:640
0x723fda add_default_capture(tree_node*, tree_node*, tree_node*)
../../gcc/cp/lambda.c:702
0x7ef00c tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.c:19413
0x7ef07d tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.c:19529
0x7d531e tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17843
0x7d4a9d tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17195
0x7d51b9 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17250
0x7d51b9 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17250
0x7d51b9 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17250
0x817014 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:16934
0x817014 instantiate_decl(tree_node*, bool, bool)
../../gcc/cp/pt.c:24661
0x6ef157 maybe_instantiate_decl
../../gcc/cp/decl2.c:5286
0x6f1f3c mark_used(tree_node*, int)
../../gcc/cp/decl2.c:5442
0x62754c build_over_call
../../gcc/cp/call.c:8552
0x639d38 build_op_call_1
../../gcc/cp/call.c:4671
0x639d38 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
../../gcc/cp/call.c:4700
0x83c1f3 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/cp/semantics.c:2586
0x7f0363 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.c:19018
0x7d531e tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:17843
0x7d50a6 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/cp/pt.c:16963
>From gcc-bugs-return-635514-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 17:32:07 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 17:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89506
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Where we create larger code, it is:
(insn 7 6 8 2 (set (reg:SI 116)
(const_int -1 [0xffffffffffffffff])) "builtin-arith-overflow-1.c":11:1
181 {*arm_movsi_insn}
(nil))
(insn 8 7 9 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg/v:SI 114 [ x ])
(reg:SI 116)))
(set (reg:SI 115)
(minus:SI (reg/v:SI 114 [ x ])
(reg:SI 116)))
]) "builtin-arith-overflow-1.c":11:1 28 {subsi3_compare1}
(expr_list:REG_DEAD (reg:SI 116)
(expr_list:REG_DEAD (reg/v:SI 114 [ x ])
(nil))))
(jump_insn 9 8 12 2 (set (pc)
(if_then_else (ltu (reg:CC 100 cc)
(const_int 0 [0]))
(label_ref 12)
(pc))) "builtin-arith-overflow-1.c":11:1 203 {arm_cond_branch}
(expr_list:REG_DEAD (reg:CC 100 cc)
(int_list:REG_BR_PROB 536868 (nil)))
where cprop previously managed to turn that subsi3_compare1 into cmpsi2_addneg,
but now it doesn't. The question is, is
mvn r3, #0
subs r0, r0, r3
setting all the Z, N, C and V flags to the same values as
adds r0, r0, #1
for all the possible values of r0 or not?
And, should I split the
(*subsi3_carryin_compare_const): Similarly, just instead of -UINTVAL.
part of the patch to a separate, non-controversial, patch, to unbreak PR89434
fallout?
>From gcc-bugs-return-635516-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 17:40:53 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89523] New: Incorrect AVX instructions with VSIB address
Date: Wed, 27 Feb 2019 17:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89523
Bug ID: 89523
Summary: Incorrect AVX instructions with VSIB address
Product: gcc
Version: 7.4.1
Status: UNCONFIRMED
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CC: ubizjak at gmail dot com
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Target: x32
32-bit indices in VSIB address are sign-extended to 64 bits. In x32,
when 32-bit indices are used as addresses, like
%ymm7, 0(,%ymm6,1), %ymm0
0xf7fa3010 is sign-extended to 0xfffffffff7fa3010 which leads to
invalid address in x32.
Testcase:
[hjl@gnu-4 00000001]$ cat foo.i
void foo (void);
extern float *ncost;
float
bar (int type, int num)
{
int i;
float cost;
cost = 0;
for (i = 0; i < num; i++)
if (type)
cost += ncost[i];
else
foo ();
return (cost);
}
[hjl@gnu-4 00000001]$ gcc -S -mx32 -Ofast -funroll-loops -march=haswell foo.i
[hjl@gnu-4 00000001]$ grep gather foo.s
vgatherdps %ymm7, 0(,%ymm6,1), %ymm0
vgatherdps %ymm11, 0(,%ymm10,1), %ymm12
vgatherdps %ymm15, 0(,%ymm14,1), %ymm5
vgatherdps %ymm7, 0(,%ymm9,1), %ymm6
vgatherdps %ymm12, 0(,%ymm11,1), %ymm13
vgatherdps %ymm5, 0(,%ymm15,1), %ymm2
vgatherdps %ymm7, 0(,%ymm10,1), %ymm6
vgatherdps %ymm14, 0(,%ymm13,1), %ymm15
vgatherdps %ymm7, 0(,%ymm10,1), %ymm6
vgatherdps %ymm13, 0(,%ymm12,1), %ymm14
vgatherdps %ymm10, 0(,%ymm9,1), %ymm7
vgatherdps %ymm12, 0(,%ymm11,1), %ymm13
vgatherdps %ymm9, 0(,%ymm2,1), %ymm10
vgatherdps %ymm12, 0(,%ymm11,1), %ymm6
vgatherdps %ymm5, 0(,%ymm15,1), %ymm2
[hjl@gnu-4 00000001]$
>From gcc-bugs-return-635517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:01:14 2019
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
Date: Wed, 27 Feb 2019 18:01:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++98 says S is non POD. This is why the difference comes into play. To be
abi compatible with the two language options it needs to be that way.
>From gcc-bugs-return-635518-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:03:47 2019
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
Date: Wed, 27 Feb 2019 18:03:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If there is a change, then using two sources one compiled with -std=c++98 and
one with -std=c++11 (or later) will not be ABI compatible.
>From gcc-bugs-return-635519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:05:28 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 18:05:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
int main () {
for (long long j = -__INT_MAX__ - 1; j <= __INT_MAX__; j++)
{
int t, t2, c, c2;
int i = j;
asm volatile ("adds %0, %2, #1; mrs %1, apsr" : "=r" (t), "=r" (c) : "r"
(i) : "cc");
asm volatile ("subs %0, %2, %3; mrs %1, apsr" : "=r" (t2), "=r" (c2) :
"r" (i), "r" (-1) : "cc");
if (t != t2 || c != c2)
__builtin_printf ("%d %d %d %d %d\n", i, t, t2, c, c2);
}
return 0;
}
suggests though (unless I've screwed up something) that at least for the adds
r0, r0, #1 vs mvn r3, #0; subs r0, r0, r3 it doesn't make a difference.
On the other side,
int main () {
for (long long j = -__INT_MAX__ - 1; j <= __INT_MAX__; j++)
{
int t, t2, c, c2;
int i = j;
asm volatile ("adds %0, %2, #2147483648; mrs %1, apsr" : "=r" (t), "=r"
(c) : "r" (i) : "cc");
asm volatile ("subs %0, %2, #2147483648; mrs %1, apsr" : "=r" (t2), "=r"
(c2) : "r" (i) : "cc");
if (t != t2 || c != c2)
__builtin_printf ("%d %d %d %d %d\n", i, t, t2, c, c2);
}
return 0;
}
triggers on lots of values. If INT_MIN is the only problematic value, we could
tweak the patch to only handle that value carefully, or always emit subs
instead of adds for that case (e.g. by swapping the two alternatives).
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
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--- Comment #3 from Matt Whitlock <gcc at mattwhitlock dot name> ---
(In reply to Andrew Pinski from comment #2)
> If there is a change, then using two sources one compiled with -std=c++98
> and one with -std=c++11 (or later) will not be ABI compatible.
ABI compatibility isn't guaranteed across C++ language standards anyway, is it?
For instance, the ABI of std::string differs between C++98 and C++11.
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45839
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45839&action=edit
gcc9-pr89434.patch
I'm testing this separately.
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Subject: [Bug target/70341] [7/8/9 Regression] cost model for addresses is incorrect, slsr is using reg + reg + CST for arm
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 27 18:11:26 2019
New Revision: 269260
URL: https://gcc.gnu.org/viewcvs?rev=269260&root=gcc&view=rev
Log:
PR target/70341
* config/aarch64/aarch64.md (casesi): Create the casesi_dispatch
MEM manually here, set MEM_READONLY_P and MEM_NOTRAP_P on it.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64.md
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Subject: [Bug lto/87089] [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
CC| |jason at gcc dot gnu.org
Assignee|hubicka at gcc dot gnu.org |jason at gcc dot gnu.org
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45840
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gcc9-pr89506.patch
If 0x80000000 is the only immediate in which adds r0,r0,#imm and adds
r0,r0,#-imm differ in condition code flags settings, then we could just use
this patch.
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I meant adds r0, r0, #imm and subs r0, r0, #-imm of course.
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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--- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #34)
> Passed bootstrap/regtest on powerpc64le-linux, on powerpc64-linux passed
> bootstrap, regtest still ongoing.
Successfully regtested (-m32/-m64) on powerpc64-linux as well.
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Subject: [Bug libstdc++/89466] [7/8 Regression] Accessing the Internet while boostrapping
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--- Comment #19 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> Could you check r269249 on trunk? It's a bit different to the patch I
> suggested earlier, but should still solve the problem.
I can confirm that this solves the problem for me.
Thanks a lot!
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Matt Whitlock from comment #3)
> ABI compatibility isn't guaranteed across C++ language standards anyway, is
> it? For instance, the ABI of std::string differs between C++98 and C++11.
What you are thinking about is the old std::string and the new C++11 compatible
std::string. std::string is not different between C++98 and C++11 in GCC; both
use the new std::string.
>From gcc-bugs-return-635529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:40:52 2019
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Subject: [Bug lto/87089] [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
Date: Wed, 27 Feb 2019 18:40:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #9)
> This is caused by:
>
> _ZN4itpp1cILNS_1aE0EED2Ev/1 (itpp::c<<anonymous> >::~c() [with itpp::a
> Referring: _ZN4itpp1cILNS_1aE0EED1Ev/2 (alias)
>
> this is a destructor which is pointed to from virutal table, but it has no
> DECL_VIRTUAL_P flag set. This makes free_lang_data to modify its context and
> point to outer namespace rather than the containing polymorphic type.
>
> Why we do not set VIRTUAL_P here?
This is the base (D2) variant of the destructor, which is not virtual and does
not appear in the vtable; the complete (D1) variant of the destructor is
virtual and does appear in the vtable, and in this case is an alias for the
base variant. I imagine that LTO is treating them as interchangeable, which
causes trouble here.
Unassigning myself.
>From gcc-bugs-return-635530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:41:28 2019
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Wed, 27 Feb 2019 18:41:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Using the expressions valgrind uses for ARM to compute flags from ADDS and SUBS
instructions and a program that simulates it on just 8-bit values instead of
32-bit ones, it seems the only problematic values where the flags change are 0
and INT_MIN. By swapping the alternatives, I think the desirable one (subs)
should trigger for both, so the above patch should be hopefully correct. Will
bootstrap/regtest it.
>From gcc-bugs-return-635531-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:46:02 2019
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Subject: [Bug ipa/88235] [7/8/9 Regression] ICE: verify_cgraph_node failed (error: edge points to wrong declaration)
Date: Wed, 27 Feb 2019 18:45:00 -0000
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--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Created attachment 45841
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45841&action=edit
Heavy handed fix
This patch fixes the verification because it stores to cgraph_node
information that the node is an expanded thunk. It is a fairly huge
change just to make a verifier shut up, but I cannot think of another
way and I always disliked the node->thunk.thunk_p testa and wanted to
replace them with node->thunk_p () call, so this is a good excuse.
Not sure if we want it for GCC 9 though (if at all, of course).
>From gcc-bugs-return-635532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 18:48:04 2019
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Subject: [Bug c++/80916] [7/8/9 Regression] Spurious "declared 'static' but never defined" warning
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Patch still waiting for review.
>From gcc-bugs-return-635533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 19:01:05 2019
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
On gcc-patches (https://gcc.gnu.org/ml/gcc-patches/2019-02/threads.html#01619)
richi pointed out that the testcase is invalid because the undefined functions
we warn about can never be defined, and I agree. And indeed with
-pedantic-errors the warnings become errors, so we reject the testcase at
compile time and never get to LTO.
So another possible fix would be changing the pedwarn in
check_global_declaration to an error.
>From gcc-bugs-return-635534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 19:03:15 2019
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
Date: Wed, 27 Feb 2019 19:03:00 -0000
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Matt Whitlock <gcc at mattwhitlock dot name> changed:
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--- Comment #5 from Matt Whitlock <gcc at mattwhitlock dot name> ---
I found this:
https://gcc.gnu.org/ml/gcc/2012-01/msg00056.html
It seems pretty resolute. I guess that means this report is a WONTFIX.
For what it's worth, having two conflicting definitions of "POD" is confusing.
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Subject: [Bug c++/89511] [7/8/9 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 27 19:07:18 2019
New Revision: 269262
URL: https://gcc.gnu.org/viewcvs?rev=269262&root=gcc&view=rev
Log:
PR c++/89511 - ICE with using-declaration and unscoped enumerator.
* parser.c (cp_parser_using_declaration): For an unscoped enum
only use its context if it's not a function declaration.
* g++.dg/cpp0x/using-enum-3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/using-enum-3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89511] [7/8 Regression] ICE in push_using_decl_1, at cp/name-lookup.c:3845
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|push_using_decl_1, at |push_using_decl_1, at
|cp/name-lookup.c:3845 |cp/name-lookup.c:3845
--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
Date: Wed, 27 Feb 2019 19:33:00 -0000
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--- Comment #9 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Feb 27 19:33:15 2019
New Revision: 269263
URL: https://gcc.gnu.org/viewcvs?rev=269263&root=gcc&view=rev
Log:
PR target/89397
* config/i386/i386.c (ix86_atomic_assign_expand_fenv): Check
TARGET_SSE in addition to TARGET_SSE_MATH.
(ix86_excess_precision): Ditto.
(ix86_float_exceptions_rounding_supported_p): Ditto.
(use_rsqrt_p): Ditto.
* config/i386/sse.md (rsqrt<mode>2): Ditto.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/i386/i386.c
branches/gcc-7-branch/gcc/config/i386/sse.md
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #67 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Are the values completely random or are there big chunks with the same values?
Recently in some cases we use RANGE_EXPR to shrink the CONSTRUCTOR sizes if
values are repeated.
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From: "alexhenrie24 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89524] New: -Wno-error doesn't work with warnings from newer versions of GCC
Date: Wed, 27 Feb 2019 19:49:00 -0000
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Bug ID: 89524
Summary: -Wno-error doesn't work with warnings from newer
versions of GCC
Product: gcc
Version: 4.8.5
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I am working on a Qt4 program that we need to compile with both GCC 4.8.5 and
GCC 8.2.0. The build process sets the -Werror option, but the Qt4 header files
trigger the new class-memaccess warning. I'd like to use
-Wno-error=class-memaccess to permit compilation and still see where we've made
this mistake in our own code, but on GCC 4.8.5 that option causes the following
error:
cc1plus: error: -Werror=class-memaccess: no option -Wclass-memaccess
So I am forced to disable the new warning altogether with -Wno-class-memaccess,
which both GCC 4.8.5 and GCC 8.2.0 accept.
You can reproduce the error on GCC 8.2.0 with any arbitrary C file, for
example:
$ gcc -Werror -Wno-error=foobar test.c
cc1: error: -Werror=foobar: no option -Wfoobar
Can we please avoid this problem in the future by ignoring
-Wno-error=<unknown-warning>?
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
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--- Comment #68 from Frank Ch. Eigler <fche at redhat dot com> ---
(In reply to Jakub Jelinek from comment #67)
> Are the values completely random or are there big chunks with the same
> values?
I'd suspect pretty random, considering that gzip of the
generated source code compresses by only 80%. In the case
of the systemtap example, it's approximately a byte dump of the
.debug_line section, which is relatively efficiently encoded,
ergo incompressible.
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Subject: [Bug fortran/57553] [F08] Valid use of STORAGE_SIZE rejected, bad error message for invalid use
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #9 from anlauf at gcc dot gnu.org ---
Fixed.
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Matt Whitlock from comment #3)
> For instance, the ABI of std::string differs between C++98 and C++11.
No it doesn't.
https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
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Subject: [Bug fortran/83057] OPEN without a filename and without STATUS='SCRATCH' could produce a warning
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #7 from anlauf at gcc dot gnu.org ---
The case with NEWUNIT= has been fixed.
I do not see a need to give a warning for
open(20)
except for e.g. -pedantic, but if you feel differently, please reopen.
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Subject: [Bug c/89520] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
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Subject: [Bug c++/89519] POD data member fails to be packed; G++ incorrectly claims it is non-POD
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Matt Whitlock from comment #0)
> test.cpp:9:4: warning: ignoring packed attribute because of unpacked non-POD
> field 'S P::s'
I think this diagnostic would be improved if it said "ignoring packed attribute
because of unpacked field 'S P::s' which is not POD for the purposes of layout"
That would refer to the term from the ABI spec that is relevant to class
layout, which is not the same as the property tested by std::is_pod.
(In reply to Matt Whitlock from comment #5)
> For what it's worth, having two conflicting definitions of "POD" is
> confusing.
The std::is_pod trait is deprecated in the C++2a draft, and the clauses
describing the core language no longer use the term POD at all.
>From gcc-bugs-return-635546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:08:22 2019
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Subject: [Bug target/89397] [7/8 Regression] ICE in build_call_expr_loc_array at gcc/tree.c:11563 since r229082
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|9.0 |7.5
--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed everywhere.
>From gcc-bugs-return-635547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:16:13 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
Date: Wed, 27 Feb 2019 20:16:00 -0000
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--- Comment #36 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
Author: edlinger
Date: Wed Feb 27 20:14:55 2019
New Revision: 269264
URL: https://gcc.gnu.org/viewcvs?rev=269264&root=gcc&view=rev
Log:
2019-02-27 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR rtl-optimization/89490
* varasm.c (get_block_for_section): Bail out for mergeable sections.
(default_use_anchors_for_symbol_p, output_object_block): Assert the
block section is not mergeable.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/varasm.c
>From gcc-bugs-return-635548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:18:01 2019
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Subject: [Bug rtl-optimization/89490] [9 Regression] char array constant put in string merge section
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Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
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----------------------------------------------------------------------------
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--- Comment #37 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
fixed.
>From gcc-bugs-return-635549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:26:33 2019
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Subject: [Bug c/89520] [7/8/9 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Wed, 27 Feb 2019 20:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |7.5
Summary|ICE tree check: accessed |[7/8/9 Regression] ICE tree
|operand 4 of call_expr with |check: accessed operand 4
|3 operands in |of call_expr with 3
|convert_to_integer_1, at |operands in
|convert.c:668 |convert_to_integer_1, at
| |convert.c:668
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
4.0 compiles this fine, 4.1 already ICEs, can't bisect right now (but have a
fix).
>From gcc-bugs-return-635550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:27:41 2019
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Subject: [Bug c/89520] [7/8/9 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Wed, 27 Feb 2019 20:27:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45842
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45842&action=edit
gcc9-pr89520.patch
Untested fix.
>From gcc-bugs-return-635551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:28:03 2019
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
Date: Wed, 27 Feb 2019 20:28:00 -0000
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--- Comment #69 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 27, 2019 8:52:12 PM GMT+01:00, fche at redhat dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12245
>
>--- Comment #68 from Frank Ch. Eigler <fche at redhat dot com> ---
>(In reply to Jakub Jelinek from comment #67)
>> Are the values completely random or are there big chunks with the
>same
>> values?
>
>I'd suspect pretty random, considering that gzip of the
>generated source code compresses by only 80%. In the case
>of the systemtap example, it's approximately a byte dump of the
>.debug_line section, which is relatively efficiently encoded,
>ergo incompressible.
We could add a NATIVE_ENCODE_RANGE_EXPR that encodes a contiguous range of
bytes in native target representation. Of course that has to be kept throughout
GIMPLE.
>From gcc-bugs-return-635552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:31:36 2019
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Subject: [Bug c/89525] New: [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
Date: Wed, 27 Feb 2019 20:31:00 -0000
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Bug ID: 89525
Summary: [9 Regression] inform messages from
-Wbuiltin-declaration-mismatch even with -w
Product: gcc
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/* { dg-do compile } */
/* { dg-options "-w" } */
double sqrt (); /* { dg-bogus "declared here" } */
void
foo (void)
{
sqrt ();
}
emits a bogus message (warning is not emitted, but inform is).
>From gcc-bugs-return-635553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:31:53 2019
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Subject: [Bug c/89525] [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
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----------------------------------------------------------------------------
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Target Milestone|--- |9.0
Ever confirmed|0 |1
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Subject: [Bug c/89525] [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
Date: Wed, 27 Feb 2019 20:39:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45843
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45843&action=edit
gcc9-pr89525.patch
Untested fix.
>From gcc-bugs-return-635555-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:49:20 2019
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Subject: [Bug c/89520] [7/8/9 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Wed, 27 Feb 2019 20:49:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Most likely started with r81269.
>From gcc-bugs-return-635556-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 20:52:13 2019
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Subject: [Bug c/89525] [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
Date: Wed, 27 Feb 2019 20:52:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r266194.
>From gcc-bugs-return-635558-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 21:04:52 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
Date: Wed, 27 Feb 2019 21:04:00 -0000
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--- Comment #2 from anlauf at gcc dot gnu.org ---
The ICE is triggered by a code path that is executed only when -Wsurprising
is used together with TRANSFER.
I'm currently testing the following patch:
Index: gcc/fortran/check.c
===================================================================
--- gcc/fortran/check.c (revision 269227)
+++ gcc/fortran/check.c (working copy)
@@ -5503,7 +5503,8 @@
if (result_elt_size == 0 && *source_size == 0 && !size)
{
*result_size = 0;
- *result_length_p = 0;
+ if (result_length_p)
+ *result_length_p = 0;
return true;
}
Will commit as obvious if it finishes successfully.
>From gcc-bugs-return-635557-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 21:04:24 2019
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
Date: Wed, 27 Feb 2019 21:04:00 -0000
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--- Comment #70 from Frank Ch. Eigler <fche at redhat dot com> ---
> We could add a NATIVE_ENCODE_RANGE_EXPR that encodes a contiguous range of
> bytes in native target representation. Of course that has to be kept
> throughout GIMPLE.
(Just a silly spitballing here ... but if such a native target representation
is
not processed again before being sent to the assembler, it could even be stored
compressed.)
>From gcc-bugs-return-635559-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 21:29:49 2019
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From: "david.bolvansky at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89526] New: Diagnose errors in asserts
Date: Wed, 27 Feb 2019 21:29:00 -0000
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Bug ID: 89526
Summary: Diagnose errors in asserts
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GCC trunk -Wall -Wextra
#include <assert.h>
int foo(int *x) {
assert(x && "nullptr");
return *x;
}
int foo2(int *x) {
assert("nullptr"); // should warn
return *x;
}
>From gcc-bugs-return-635560-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 21:55:02 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86969] [8/9 Regression] ICE (in tsubst_copy) for a generic recursive lambda
Date: Wed, 27 Feb 2019 21:55:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Feb 27 21:54:25 2019
New Revision: 269265
URL: https://gcc.gnu.org/viewcvs?rev=269265&root=gcc&view=rev
Log:
PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
Here, the problem was that extract_local_specs wasn't seeing that we use
'self' inside the lambda in the else of the inner constexpr if, because we
don't walk into lambda bodies and we didn't capture it in the lambda because
'self' is still dependent. Marek recently changed process_outer_var_ref to
do more implicit capture in templates; this example shows that we should
always capture non-packs, so that we can continue to not walk into lambda
bodies. We do walk into lambda bodies for pack expansions, so we can delay
deciding whether we're capturing a single element or the entire pack.
Immediately capturing a VLA means we need to create a dependent VLA capture
type, and not in the context of the lambda op(), since trying to look up the
instantiation of the op() while we're substituting into the capture list
would crash. So I force TYPE_CONTEXT and the binding level out to the
enclosing function before pushtag, avoid adding a TAG_DEFN, and instead
force the type to be complete in tsubst_lambda_expr.
* semantics.c (process_outer_var_ref): Do capture dependent vars.
* class.c (finish_struct): Only add TAG_DEFN if T is in
current_function_decl.
* lambda.c (vla_capture_type): Force the capture type out into the
lambda's enclosing function.
(add_capture): Pass in the lambda.
* pt.c (tsubst_lambda_expr): complete_type a VLA capture type.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-if27.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/cp/lambda.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/semantics.c
>From gcc-bugs-return-635561-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:31:44 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
Date: Wed, 27 Feb 2019 22:31:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In today's x86_64-linux and i686-linux bootstrap, I see following in /tmp
(remove all non-systemd directories in /tmp before the bootstrap):
340681328
517045444
844331773
cmd-go-test-051806874
cmd-go-test-051806874/go-build626269585
cmd-go-test-051806874/go-build486488501
cmd-go-test-051806874/go-build486488501/b001
cmd-go-test-051806874/go-build985544238
cmd-go-test-051806874/go-build275250066
cmd-go-test-051806874/go-build206701887
cmd-go-test-051806874/go-build148081200
cmd-go-test-051806874/gotest035473270
cmd-go-test-051806874/gotest035473270/src
cmd-go-test-051806874/gotest035473270/src/p
cmd-go-test-051806874/gotest035473270/src/p/p_test.go
cmd-go-test-051806874/go-build618547490
cmd-go-test-051806874/go-build618547490/b008
cmd-go-test-051806874/go-build618547490/b008/vet.out
cmd-go-test-051806874/go-build618547490/b008/vet.cfg
cmd-go-test-051806874/go-build618547490/b008/_pkg_.a
cmd-go-test-051806874/go-build618547490/b008/_buildid.o
cmd-go-test-051806874/go-build618547490/b008/_buildid.s
cmd-go-test-051806874/go-build618547490/b008/_go_.o
cmd-go-test-051806874/go-build618547490/b008/_importcfgroot_
cmd-go-test-051806874/go-build618547490/b008/_importcfgroot_/libb.a
cmd-go-test-051806874/go-build618547490/b008/_importcfgroot_/liba.a
cmd-go-test-051806874/go-build618547490/b009
cmd-go-test-051806874/go-build618547490/b009/vet.out
cmd-go-test-051806874/go-build618547490/b009/vet.cfg
cmd-go-test-051806874/go-build618547490/b009/_pkg_.a
cmd-go-test-051806874/go-build618547490/b009/_buildid.o
cmd-go-test-051806874/go-build618547490/b009/_buildid.s
cmd-go-test-051806874/go-build618547490/b009/_go_.o
cmd-go-test-051806874/go-build618547490/b009/_importcfgroot_
cmd-go-test-051806874/go-build618547490/b009/_importcfgroot_/libb.a
cmd-go-test-051806874/go-build618547490/b007
cmd-go-test-051806874/go-build618547490/b007/vet.out
cmd-go-test-051806874/go-build618547490/b007/vet.cfg
cmd-go-test-051806874/go-build618547490/b007/_pkg_.a
cmd-go-test-051806874/go-build618547490/b007/_buildid.o
cmd-go-test-051806874/go-build618547490/b007/_buildid.s
cmd-go-test-051806874/go-build618547490/b007/_go_.o
cmd-go-test-051806874/go-build814904079
cmd-go-test-051806874/gotest973510067
cmd-go-test-051806874/gotest973510067/src
cmd-go-test-051806874/gotest973510067/src/p
cmd-go-test-051806874/gotest973510067/src/p/p.go
cmd-go-test-051806874/gotest511784738
cmd-go-test-051806874/gotest511784738/src
cmd-go-test-051806874/gotest511784738/src/p1
cmd-go-test-051806874/gotest511784738/src/p1/p1_test.go
cmd-go-test-051806874/gotest511784738/src/p1/p1.go
cmd-go-test-051806874/gotest648556558
cmd-go-test-051806874/gotest648556558/src
cmd-go-test-051806874/gotest648556558/src/b
cmd-go-test-051806874/gotest648556558/src/b/b_test.go
cmd-go-test-051806874/gotest648556558/src/b/export_test.go
cmd-go-test-051806874/gotest648556558/src/b/b.go
cmd-go-test-051806874/gotest648556558/src/a
cmd-go-test-051806874/gotest648556558/src/a/a.go
cmd-go-test-051806874/gotest294122667
cmd-go-test-051806874/gotest294122667/pkg-config.out
cmd-go-test-051806874/gotest294122667/pkg-config.sh
cmd-go-test-051806874/gotest294122667/src
cmd-go-test-051806874/gotest294122667/src/x
cmd-go-test-051806874/gotest294122667/src/x/b.go
cmd-go-test-051806874/gotest294122667/src/x/a.go
cmd-go-test-051806874/gotest072509820
cmd-go-test-051806874/gotest072509820/x.exe
cmd-go-test-051806874/gotest072509820/src
cmd-go-test-051806874/gotest072509820/src/x
cmd-go-test-051806874/gotest072509820/src/x/a.go
cmd-go-test-051806874/gotest882825809
cmd-go-test-051806874/gotest882825809/pkg
cmd-go-test-051806874/gotest882825809/pkg/gccgo_linux_386
cmd-go-test-051806874/gotest882825809/pkg/gccgo_linux_386/liba.a
cmd-go-test-051806874/gotest882825809/src
cmd-go-test-051806874/gotest882825809/src/a
cmd-go-test-051806874/gotest882825809/src/a/a.go
cmd-go-test-051806874/gotest996175495
cmd-go-test-051806874/gotest996175495/src
cmd-go-test-051806874/gotest996175495/src/example
cmd-go-test-051806874/gotest996175495/src/example/b
cmd-go-test-051806874/gotest996175495/src/example/a
cmd-go-test-051806874/gotest996175495/src/example/a/a.go
cmd-go-test-051806874/gotest996175495/src/example/a/Pkg
cmd-go-test-051806874/gotest996175495/src/example/a/Pkg/pkg.go
cmd-go-test-051806874/gotest996175495/src/example/a/pkg
cmd-go-test-051806874/gotest996175495/src/example/a/pkg/pkg.go
cmd-go-test-051806874/gotest063357645
cmd-go-test-051806874/gotest063357645/src
cmd-go-test-051806874/gotest063357645/src/cgoref
cmd-go-test-051806874/gotest063357645/src/cgoref/cgoref.go
cmd-go-test-051806874/tmpdir706014513
cmd-go-test-051806874/tmpdir706014513/testbin
cmd-go-test-051806874/tmpdir706014513/testbin/go
cmd-go-test-099107789
cmd-go-test-099107789/gotest690010532
cmd-go-test-099107789/gotest690010532/symdir1
cmd-go-test-099107789/gotest690010532/gopath
cmd-go-test-099107789/gotest690010532/gopath/bin
cmd-go-test-099107789/gotest690010532/gopath/bin/dir1
cmd-go-test-099107789/gotest690010532/gopath/src
cmd-go-test-099107789/gotest690010532/gopath/src/dir1
cmd-go-test-099107789/gotest690010532/gopath/src/dir1/p.go
cmd-go-test-099107789/gotest690010532/gopath/src/dir1/internal
cmd-go-test-099107789/gotest690010532/gopath/src/dir1/internal/v
cmd-go-test-099107789/gotest690010532/gopath/src/dir1/internal/v/v.go
cmd-go-test-099107789/tmpdir216051912
cmd-go-test-099107789/tmpdir216051912/testbin
cmd-go-test-099107789/tmpdir216051912/testbin/go
go-build361223223
go-build361223223/testprogcgo_-tags=threadprof.exe
go-build361223223/testprognet.exe
go-build361223223/testprog.exe
go-build361223223/testprogcxx.exe
go-build361223223/testprogcgo.exe
This was --enable-languages=default,ada,obj-c++,lto,go,brig,d x86_64-linux
bootstrap and --enable-languages=default,obj-c++,lto,go,brig,d i686-linux one.
As, the first 3 directories where there is no obvious go string could be from
something else.
>From gcc-bugs-return-635562-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:35:51 2019
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Subject: [Bug go/89172] FAIL: runtime/pprof
Date: Wed, 27 Feb 2019 22:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89172
--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Wed Feb 27 22:35:10 2019
New Revision: 269266
URL: https://gcc.gnu.org/viewcvs?rev=269266&root=gcc&view=rev
Log:
PR go/89172
internal/cpu, runtime, runtime/pprof: handle function descriptors
When using PPC64 ELF ABI v1 a function address is not a PC, but is the
address of a function descriptor. The first field in the function
descriptor is the actual PC (see
http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi.html#FUNC-DES).
The libbacktrace library knows about this, and libgo uses actual PC
values consistently except for the helper function funcPC that appears
in both runtime and runtime/pprof.
This patch fixes funcPC by recording, in the internal/cpu package,
whether function descriptors are being used. We have to check for
function descriptors using a C compiler check, because GCC can be
configured using --with-abi to select the ELF ABI to use.
Fixes https://gcc.gnu.org/PR89172
Reviewed-on: https://go-review.googlesource.com/c/162978
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/Makefile.am
trunk/libgo/Makefile.in
trunk/libgo/configure
trunk/libgo/configure.ac
trunk/libgo/go/runtime/pprof/proto.go
trunk/libgo/go/runtime/proc.go
trunk/libgo/testsuite/Makefile.in
>From gcc-bugs-return-635563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:42:18 2019
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
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Resolution|FIXED |---
--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Did any of the tests fail?
>From gcc-bugs-return-635564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:45:47 2019
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Subject: [Bug go/89172] FAIL: runtime/pprof
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Fixed.
>From gcc-bugs-return-635565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:47:11 2019
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, some go tests fail pretty much all the time for me, but with quite high
volatility, so I usually ignore them if there aren't too many. This time
FAIL: ./index0-out.go execution, -O0 -g -fno-var-tracking-assignments
FAIL: go.test/test/nilptr2.go execution, -O2 -g
FAIL: go test cmd/go
FAIL: go test runtime
on x86_64-linux and
FAIL: ./index0-out.go execution, -O0 -g -fno-var-tracking-assignments
FAIL: go test cmd/go
FAIL: TestScript
FAIL: go test runtime
FAIL: TestAbort
on i686-linux.
>From gcc-bugs-return-635566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 22:49:14 2019
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Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
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--- Comment #3 from anlauf at gcc dot gnu.org ---
The patch turned out to require a small adjustment for scalar MOLD
of size 0, so I posted it for review:
https://gcc.gnu.org/ml/fortran/2019-02/msg00237.html
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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--- Comment #7 from Ian Lance Taylor <ian at airs dot com> ---
Can you attach the file gotools/cmd_go-testlog from your build directory?
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89406
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45844
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45844&action=edit
cmd_go-testlog from x86_64
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
Date: Wed, 27 Feb 2019 23:11:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45845
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45845&action=edit
cmd_go-testlog from i686-linux build
Note, this is on 16c32t skylake-avx512 running:
../configure --enable-languages=default,ada,obj-c++,lto,go,brig,d
--enable-checking=yes,rtl,extra && make -j32 bootstrap > LOG 2>&1 &&
GXX_TESTSUITE_STDS=98,11,14,17,2a make -j32 -k check > LOGC 2>&1;
../contrib/test_summary > LOGT 2>&1
for x86_64-linux and
PATH=~/hbin:$PATH i386 ../configure
--enable-languages=default,obj-c++,lto,go,brig,d
--enable-checking=yes,rtl,extra && PATH=~/hbin:$PATH i386 make -j32 bootstrap >
LOG 2>&1 && PATH=~/hbin:$PATH GXX_TESTSUITE_STDS=98,11,14,17,2a i386 make -j32
-k check > LOGC 2>&1; ../contrib/test_summary > LOGT 2>&1
with
for i in ~/hbin/*; do echo ===$i===; cat $i; done
===/home/jakub/hbin/as===
#!/bin/sh
exec /usr/bin/as --32 "$@"
===/home/jakub/hbin/g++===
#!/bin/sh
exec /usr/bin/g++ -m32 "$@"
===/home/jakub/hbin/gcc===
#!/bin/sh
exec /usr/bin/gcc -m32 "$@"
===/home/jakub/hbin/ld===
#!/bin/sh
case "$*" in
--version) cat <<\EOF
GNU ld version 2.20.52.0.1-10.fc17 20100131
Copyright 2012 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
EOF
exit 0;;
esac
exec /usr/bin/ld -m elf_i386 -L /usr/lib/ "$@"
Both bootstraps/regtests are running in parallel.
>From gcc-bugs-return-635570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 27 23:18:28 2019
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
Date: Wed, 27 Feb 2019 23:18:00 -0000
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--- Comment #10 from Ian Lance Taylor <ian at airs dot com> ---
Thanks. In both cases the tests were killed because they ran too long (the
timeout was 11 minutes). Since the tests were killed, they didn't clean up
after themselves.
Can you cd to the gotools directory and run "time make check-go-tool" and see
how long it takes? Also whether it passes (the full output will go to
cmd_go-testlog)? Thanks.
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Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45846
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45846&action=edit
cmd_go-testlog from x86_64-linux on idle box
real 3m9.956s
user 9m3.231s
sys 0m39.443s
Though, unlike the normal case, there aren't 63 other tests running
concurrently with that, so it doesn't surprise me if the 3 minute wall time
grows 4 or how many times (especially when the user time is 9 minutes and so it
means it is more than one concurrent process or thread to handle that.
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Subject: [Bug c++/88857] [7/8/9 Regression] ICE in build_value_init
Date: Thu, 28 Feb 2019 00:07:00 -0000
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Feb 28 00:07:06 2019
New Revision: 269267
URL: https://gcc.gnu.org/viewcvs?rev=269267&root=gcc&view=rev
Log:
PR c++/88857 - ICE with value-initialization of argument in template.
* call.c (convert_like_real): Don't call build_value_init in template.
* g++.dg/cpp0x/initlist-value4.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist-value4.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88857] [7/8 Regression] ICE in build_value_init
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|build_value_init |build_value_init
--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-635574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 01:09:34 2019
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Subject: [Bug c/89527] New: GCC ICE internal compiler error during RTL pass: mach on arm/thumb2
Date: Thu, 28 Feb 2019 01:09:00 -0000
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Bug ID: 89527
Summary: GCC ICE internal compiler error during RTL pass: mach
on arm/thumb2
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: raj.khem at gmail dot com
Target Milestone: ---
While compiling glibc-2.29, timezone/zic, gcc started to ICE( this was working
ok few weeks ago), this only happens when compiling with thumb2, it works ok in
arm mode.
$
../../recipe-sysroot-native/usr/bin/arm-yoe-linux-gnueabi/arm-yoe-linux-gnueabi-gcc
-mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7
--sysroot=/mnt/a/yoe/build/tmp/work/cortexa7t2hf-neon-vfpv4-yoe-linux-gnueabi/glibc/2.29-r0/recipe-sysroot
a.c -c
a.c: In function 'foo':
a.c:9:1: error: unrecognizable insn:
9 | }
| ^
(insn 33 32 23 2 (parallel [
(set (reg:CC 100 cc)
(compare:CC (reg:SI 3 r3 [ min_year.0_1+4 ])
(const_int -2147483648 [0xffffffff80000000])))
(set (reg:SI 3 r3 [113])
(minus:SI (plus:SI (reg:SI 3 r3 [ min_year.0_1+4 ])
(const_int -2147483648 [0xffffffff80000000]))
(ltu:SI (reg:CC_C 100 cc)
(const_int 0 [0]))))
]) "a.c":6:6 -1
(nil))
during RTL pass: mach
a.c:9:1: internal compiler error: in extract_insn, at recog.c:2310
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
==============================================
reduced testcase a.c
==============================================
static long long int min_year;
void foo() {
enum { years_of_observations = 400 + 2 };
if (min_year >= (-9223372036854775807LL -1) + years_of_observations)
return;
}
==============================================
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Subject: [Bug debug/89528] New: Wrong debug info generated at -Og [gcc-trunk]
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Bug ID: 89528
Summary: Wrong debug info generated at -Og [gcc-trunk]
Product: gcc
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$ cat 5.c
char b;
int d, e;
static int i = 1;
void a(l) { printf("", l); }
char(c)(char l) { return l || b && l == 1 ? b : b % l; }
short(f)(l, m) { return l * m; }
short(g)(short l, short m) { return m || l == 767 && m == 1; }
int(h)(l, m) { return (l ^ m & l ^ (m & 647) - m ^ m) < m; }
static int(j)(l) { return d == 0 || l == 647 && d == 1 ? l : l % d; }
short(k)(l) { return l >= 2 >> l; }
static short n(void) {
int l_1127 = ~j(9 || 0) ^ 65535;
optimize_me_not();
f(l_1127, i && e ^ 4) && g(0, 0);
e = 0;
return 5;
}
int main() { n(); }
$ cat outer.c
void optimize_me_not() {}
### -Og
Reading symbols from ./a.out...
(gdb) b 13
Breakpoint 1 at 0x400590: file 5.c, line 13.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, n () at 5.c:13
13 optimize_me_not();
(gdb) info locals
l_1127 = -4258335
### -O0
Reading symbols from ./a.out...
(gdb) b 13
Breakpoint 1 at 0x40064c: file 5.c, line 13.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, n () at 5.c:13
13 optimize_me_not();
(gdb) info locals
l_1127 = -65535
$ gcc-trunk --version
gcc-trunk (GCC) 9.0.1 20190227 (experimental) [trunk revision 269248]
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gdb-trunk --version
GNU gdb (GDB) 8.3.50.20190227-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
>From gcc-bugs-return-635576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 03:48:58 2019
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Subject: [Bug debug/89529] New: Wrong debug info generated at -Og [gcc-trunk]
Date: Thu, 28 Feb 2019 03:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89529
Bug ID: 89529
Summary: Wrong debug info generated at -Og [gcc-trunk]
Product: gcc
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$ cat 2.c
int a;
void b() {
short l_1862 = 19071;
a = 0;
for (; 0;)
optimize_me_not();
--l_1862;
}
int main() { b(); }
$ cat outer.c
void optimize_me_not() {}
### -Og
Reading symbols from ./a.out...
(gdb) b 6
Breakpoint 1 at 0x40048c: file 2.c, line 7.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, b () at 2.c:7
7 --l_1862;
(gdb) frame var
No symbol "var" in current context.
(gdb) info locals
l_1862 = 19070
### -O0
Reading symbols from ./a.out...
(gdb) b 6
Breakpoint 1 at 0x400497: file 2.c, line 7.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, b () at 2.c:7
7 --l_1862;
(gdb) info locals
l_1862 = 19071
$ gcc-trunk --version
gcc-trunk (GCC) 9.0.1 20190227 (experimental) [trunk revision 269248]
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gdb-trunk --version
GNU gdb (GDB) 8.3.50.20190227-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
>From gcc-bugs-return-635577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 03:50:11 2019
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Subject: [Bug debug/89529] Wrong debug info generated at -Og [gcc-trunk]
Date: Thu, 28 Feb 2019 03:50:00 -0000
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--- Comment #1 from dcci <dccitaliano at gmail dot com> ---
The breakpoint is set on the line where the decrement happens, so it should
probably print the value before the decrement (at -Og)
>From gcc-bugs-return-635578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 03:55:05 2019
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Subject: [Bug debug/89530] New: Wrong debug informations for C array generated at -Og [gcc-trunk]
Date: Thu, 28 Feb 2019 03:55:00 -0000
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Bug ID: 89530
Summary: Wrong debug informations for C array generated at -Og
[gcc-trunk]
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$ cat a.c
int e, g;
short f;
char h;
short(a)(b) {}
int(c)(d) {}
void i() {
int j, k;
unsigned short l_1404[3][9] = {58143, 8, 5, 80};
for (; f; f = 0)
if (h)
e = l_1404[0][7];
else {
for (; g;)
j = k = c(j);
e = a(k);
}
optimize_me_not();
}
int main() { i(); }
$ cat outer.c
void optimize_me_not() {}
### -O0
Reading symbols from ./a.out...
(gdb) b 17
Breakpoint 1 at 0x40055c: file 3.c, line 17.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, i () at 3.c:17
17 optimize_me_not();
(gdb) p l_1404[0][0]
$1 = 58143
### -Og
Reading symbols from ./a.out...
(gdb) b 17
Breakpoint 1 at 0x4004f5: file 3.c, line 17.
(gdb) r
Starting program: /home/davide/finished-reducing-gcc/a.out
Breakpoint 1, i () at 3.c:17
17 optimize_me_not();
(gdb) p l_1404[0][0]
$1 = 9
$ gcc-trunk --version
gcc-trunk (GCC) 9.0.1 20190227 (experimental) [trunk revision 269248]
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gdb-trunk --version
GNU gdb (GDB) 8.3.50.20190227-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
>From gcc-bugs-return-635579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 04:32:50 2019
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Subject: [Bug c/88088] -Wtrampolines should be enabled by -Wall (or -Wextra)
Date: Thu, 28 Feb 2019 04:32:00 -0000
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--- Comment #21 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Mark Wielaard from comment #20)
> https://gcc.gnu.org/ml/gcc-patches/2018-11/msg02055.html
Did this make it in? If not, have you pinged it lately?
>From gcc-bugs-return-635580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 04:49:02 2019
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From: "yyc1992 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/54412] minimal 32-byte stack alignment with -mavx on 64-bit Windows
Date: Thu, 28 Feb 2019 04:49:00 -0000
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Yichao Yu <yyc1992 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |yyc1992 at gmail dot com
--- Comment #23 from Yichao Yu <yyc1992 at gmail dot com> ---
> It is GCC does not realign the stack at all that is the issue.
I hit another related issue that might confirm this as well.
I noticed this when I tried to manually align the stack with inline assembly.
C++ code reduced from my test case,
```
#include <immintrin.h>
#include <stdio.h>
#include <stdint.h>
__attribute__((target("avx")))
__attribute__((noinline)) __m256d f(__m256d x, uint32_t a, const double *p)
{
__m256d res;
asm volatile ("vxorpd %0, %0, %0" :
"=x"(res), "+x"(x), "+r"(a), "+r"(p) ::
"memory", "rax", "rcx", "rdx", "r8", "r9", "r10",
"r11", "rbp");
return res;
}
__attribute__((target("avx")))
__attribute__((noinline)) __m256d f2(__m256d x, uint32_t a, const double *p)
{
__m256d res;
asm volatile ("vxorpd %0, %0, %0" :
"=x"(res), "+x"(x), "+r"(a), "+r"(p) ::
"memory", "rax", "rcx", "rdx", "r8", "r9", "r10",
"r11", "rbp");
return res;
}
__attribute__((target("avx")))
__attribute__((noinline)) __m256d f(__m256d x, __m256d y, __m256d z,
uint32_t a, const double *p)
{
__m256d res;
asm volatile ("vxorpd %0, %0, %0" :
"=x"(res), "+x"(x), "+x"(y), "+x"(z), "+r"(a), "+r"(p) ::
"memory", "rax", "rcx", "rdx", "r8", "r9", "r10",
"r11", "rbp");
return res;
}
const double points[] = {0, 0.1, 0.2, 0.6};
__attribute__((target("avx"))) void test_avx()
{
f(__m256d{0, 0, 0, 0}, __m256d{0, 0, 0, 0},
__m256d{0, 0, 0, 0}, 4, points);
f(__m256d{0, 0, 0, 0}, 4, points);
}
__attribute__((target("avx"))) void test_avx2()
{
f2(__m256d{0, 0, 0, 0}, 4, points);
}
static void call_aligned_stack(void (*p)(void))
{
asm volatile ("movq %%rsp, %%rbp\n"
"andq $-64, %%rsp\n"
"subq $64, %%rsp\n"
"callq *%0\n"
"movq %%rbp, %%rsp\n"
:: "r"(p)
: "memory", "rax", "rcx", "rdx", "r8", "r9", "r10", "r11",
"rbp");
}
int main()
{
call_aligned_stack(test_avx);
fprintf(stderr, "aaaa\n");
fflush(stderr);
call_aligned_stack(test_avx2);
return 0;
}
```
(The `fprintf` is there only to make it easier to see when the crash happens.)
The stack alignment code makes sure that the stack is aligned to 64bytes before
making the `call`, which is verified in the debugger, however, when compiled
with GCC 8.2.1 on msys2 (using the mingw-w64-x86_64-gcc package) the `test_avx`
function is happy while `test_avx2` function is not.
Looking at the generated code, for the crashing function:
```
00000000004015c0 <_Z9test_avx2v>:
4015c0: 48 83 ec 68 sub $0x68,%rsp
4015c4: c5 f9 57 c0 vxorpd %xmm0,%xmm0,%xmm0
4015c8: 4c 8d 0d 51 7a 00 00 lea 0x7a51(%rip),%r9 # 409020
<_ZL6points>
4015cf: 41 b8 04 00 00 00 mov $0x4,%r8d
4015d5: 48 8d 4c 24 40 lea 0x40(%rsp),%rcx
4015da: 48 8d 54 24 20 lea 0x20(%rsp),%rdx
4015df: c5 fd 29 44 24 20 vmovapd %ymm0,0x20(%rsp)
4015e5: c5 f8 77 vzeroupper
4015e8: e8 a3 ff ff ff callq 401590 <_Z2f2Dv4_djPKd>
4015ed: 90 nop
4015ee: 48 83 c4 68 add $0x68,%rsp
4015f2: c3 retq
```
which tries to write with 32byte alignment with a stack offset from the initial
call instruction: -8 - 0x68 + 0x20 = -80.
OTOH, for the "good" function,
```
0000000000401640 <_Z8test_avxv>:
401640: 57 push %rdi
401641: 56 push %rsi
401642: 53 push %rbx
401643: 48 81 ec b0 00 00 00 sub $0xb0,%rsp
40164a: c5 d9 57 e4 vxorpd %xmm4,%xmm4,%xmm4
40164e: 48 8d 3d cb 79 00 00 lea 0x79cb(%rip),%rdi #
409020 <_ZL6points>
401655: 48 8d 74 24 70 lea 0x70(%rsp),%rsi
40165a: 4c 8d 4c 24 30 lea 0x30(%rsp),%r9
40165f: 48 89 7c 24 28 mov %rdi,0x28(%rsp)
401664: 48 8d 9c 24 90 00 00 lea 0x90(%rsp),%rbx
40166b: 00
40166c: 4c 8d 44 24 50 lea 0x50(%rsp),%r8
401671: 48 89 f2 mov %rsi,%rdx
401674: c5 fd 29 64 24 70 vmovapd %ymm4,0x70(%rsp)
40167a: 48 89 d9 mov %rbx,%rcx
40167d: c5 fd 29 64 24 50 vmovapd %ymm4,0x50(%rsp)
401683: c5 fd 29 64 24 30 vmovapd %ymm4,0x30(%rsp)
401689: c7 44 24 20 04 00 00 movl $0x4,0x20(%rsp)
401690: 00
401691: c5 f8 77 vzeroupper
401694: e8 67 ff ff ff callq 401600 <_Z1fDv4_dS_S_jPKd>
401699: c5 d9 57 e4 vxorpd %xmm4,%xmm4,%xmm4
40169d: 49 89 f9 mov %rdi,%r9
4016a0: 48 89 f2 mov %rsi,%rdx
4016a3: 41 b8 04 00 00 00 mov $0x4,%r8d
4016a9: 48 89 d9 mov %rbx,%rcx
4016ac: c5 fd 29 64 24 70 vmovapd %ymm4,0x70(%rsp)
4016b2: c5 f8 77 vzeroupper
4016b5: e8 a6 fe ff ff callq 401560 <_Z1fDv4_djPKd>
4016ba: 90 nop
4016bb: 48 81 c4 b0 00 00 00 add $0xb0,%rsp
4016c2: 5b pop %rbx
4016c3: 5e pop %rsi
4016c4: 5f pop %rdi
4016c5: c3 retq
```
The stack offset for the 32bytes aligned access is, -8 - 8 * 3 - 0xb0 + 0x70 =
-96, which is different from the previous one by 16 so it seems that GCC isn't
even consistent with itself on what stack alignment it expect.
>From gcc-bugs-return-635581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 04:50:31 2019
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Subject: [Bug target/54412] minimal 32-byte stack alignment with -mavx on 64-bit Windows
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--- Comment #24 from Yichao Yu <yyc1992 at gmail dot com> ---
Oh, and the test case above was compiled with -O3 (and -g -Wall -Wextra).
>From gcc-bugs-return-635582-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 04:55:45 2019
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From: "arthur.j.odwyer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
Date: Thu, 28 Feb 2019 04:55:00 -0000
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--- Comment #4 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
libstdc++ passes all my test cases now except this one:
```
// https://godbolt.org/z/kvh9Ih
#include <set>
std::set<int> s;
std::set t(s, std::allocator<long>());
```
The issue is that we humans can logically deduce t's Allocator parameter as
"the same as s's Allocator parameter", but due to an implementation detail, the
compiler is also trying to deduce t's Allocator parameter as
std::allocator<long>, and so it deduces conflicting types and fails deduction.
This test case could be made to work if you changed
https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/include/bits/stl_set.h#L124
from
typedef _Alloc allocator_type;
to
typedef typename __identity<_Alloc>::type allocator_type;
or whatever libstdc++'s equivalent of __identity is.
MSVC's `set` already effectively does this, by inheriting its `allocator_type`
typedef from a base class. I don't know whether the paper standard has a
definite interpretation one way or the other; it might be open to
interpretation, or it might even say that MSVC is wrong in this case.
(Logically, I think MSVC *should* be right.)
Perhaps a new bugzilla issue should be opened for this one.
>From gcc-bugs-return-635583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 06:25:41 2019
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Subject: [Bug target/88100] no warning reported when value for vec_splat_{su}{8,16} would overflow
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--- Comment #5 from Li Jia He <helijia at gcc dot gnu.org> ---
Author: helijia
Date: Thu Feb 28 06:24:57 2019
New Revision: 269272
URL: https://gcc.gnu.org/viewcvs?rev=269272&root=gcc&view=rev
Log:
Backport from trunk
2019-02-20 Li Jia He <helijia@linux.ibm.com>
PR target/88100
* gcc/config/rs6000/rs6000.c (rs6000_gimple_fold_builtin)
<case ALTIVEC_BUILTIN_VSPLTISB, ALTIVEC_BUILTIN_VSPLTISH,
ALTIVEC_BUILTIN_VSPLTISW>: Don't convert the operand before
range checking it.
* gcc/testsuite/gcc.target/powerpc/pr88100.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/powerpc/pr88100.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/89477] Incorrect CTAD deduction guides for set and multiset
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CC| |mike at spertus dot com
--- Comment #5 from Mike Spertus <mike at spertus dot com> ---
Since this deduction comes from the standard’s set(set, Allocator) constructor,
I would say that in this case the gnu behavior is conforming and the MSVC
behavior is not (not implying anything here about what the standard should say,
just what it does...).
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Subject: [Bug c/89520] [7/8/9 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Thu, 28 Feb 2019 07:17:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 28 07:16:38 2019
New Revision: 269273
URL: https://gcc.gnu.org/viewcvs?rev=269273&root=gcc&view=rev
Log:
PR c/89520
* convert.c (convert_to_real_1, convert_to_integer_1): Punt for
builtins if they don't have a single scalar floating point argument.
Formatting fixes.
* gcc.dg/pr89520-1.c: New test.
* gcc.dg/pr89520-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89520-1.c
trunk/gcc/testsuite/gcc.dg/pr89520-2.c
Modified:
trunk/gcc/ChangeLog
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>From gcc-bugs-return-635586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 07:18:26 2019
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Subject: [Bug c/89525] [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
Date: Thu, 28 Feb 2019 07:18:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 28 07:17:49 2019
New Revision: 269274
URL: https://gcc.gnu.org/viewcvs?rev=269274&root=gcc&view=rev
Log:
PR c/89525
* c-typeck.c (convert_arguments): Call inform_declaration only if
the previous warning_at call returned true.
* gcc.dg/pr89525.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89525.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 07:21:09 2019
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From: "gccbugzilla at limegreensocks dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Thu, 28 Feb 2019 07:21:00 -0000
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--- Comment #7 from David <gccbugzilla at limegreensocks dot com> ---
(In reply to ktkachov from comment #6)
> I think David (CC'ed) was interested in this?
Well, the news here is mixed.
While I attempted to write this (see
https://www.limegreensocks.com/arm/Extended-Asm.html#AArch64Operandmodifiers),
I don't actually speak ARM assembler. AAR, my confidence in my attempts to
explain things or give examples is limited. I'm not excited about posting a
doc patch that turns out to be stupid when viewed by ARM experts.
Unless someone who does speak ARM is prepared to comment/review, I'm not sure
how to proceed. And the few people I know who do speak ARM aren't responding.
- David
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Subject: [Bug c/89525] [9 Regression] inform messages from -Wbuiltin-declaration-mismatch even with -w
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c/89520] [7/8 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89520
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|[7/8/9 Regression] ICE tree |[7/8 Regression] ICE tree
|check: accessed operand 4 |check: accessed operand 4
|of call_expr with 3 |of call_expr with 3
|operands in |operands in
|convert_to_integer_1, at |convert_to_integer_1, at
|convert.c:668 |convert.c:668
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-635590-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 07:31:58 2019
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Subject: [Bug c/89520] [7/8 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Thu, 28 Feb 2019 07:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|FIXED |---
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed only for 9+ so far though.
>From gcc-bugs-return-635591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 07:56:39 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/80791] [8/9 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Thu, 28 Feb 2019 07:56:00 -0000
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--- Comment #23 from bin cheng <amker at gcc dot gnu.org> ---
(In reply to Kewen Lin from comment #22)
> As the discussion above, on Power any IV should have an extend (sign/zero)
> if its width is less than the GPR width (POINTER_SIZE equivalent here).
> Although we don't model this precisely on Power, in most cases it's trivial
> since we have TYPE_PRECISION check for those inconsistent width uses, extra
> cost will be added, the IV is still the one we prefer even with extension
> consideration in cost modeling, that is, considering extension or not
> doesn't affect the result.
I wonder if a pre-Loop-Opt pass promotes (maybe only induction) variables to
GPR size for usual/simple cases could be helpful? That is, lift burden by
canonicalizing input to IVOPTs as much as possible. As a mono pass, the
extensibility is not good enough to cover every case, especially based on
possible following optimization.
>
> In this case, we have one GENERIC use and one CMP use. Cand 4 was chosen as
> the best, but later RTL opts can eliminate CMP use by using counter register
> for the loop closing, it means we don't need to consider CMP use in ivopts
> phase. Since there is no any uses for 32bit IV, the extension cost can NOT
> be covered (ignored) as usual.
>
> The cost for GENERIC use looks like [cand $index ($iv_cost + $comp_cost)]:
> 1) without considering extension cost, cand 4 (4 + 4) vs. cand 6 (5 + 0)
> 2) with considering extension cost, cand 4 (8 + 4) vs. cand 6 (9 + 0)
> Since cand 6 can't be used for CMP use, so if we still need to consider CMP,
> cand 4 is always selected, the cost would be larger introducing cand 6.
> But if can predict CMP is useless and model extension, the cost would be:
> cand 4 (8 + 4) vs. cand 6 (9 + 0). Cand 6 is better.
Elimination of CMP with doloop is not modeled in IVOPTs now, would be great to
have that. With that support, cand 6 would be chosen regardless of extension
here, right? Of course, computing cost based on possibly eliminable cand/use
is totally another issue and is even harder.
>
> I did some hacks locally and it works. But the most tricky and hardest part
> would be how to predict CMP will be optimized away with CTR eventually,
> the correctness of predict is more important. It looks better to think about
> the simplest case first. The proposed idea is that:
> 1) one target specific hook/flag to enable this adjust
> 2) one target specific predict function to determine the loop can benefit
> do_loop CTR transformation (like innermost loop, no calls, niter determined
> etc.)
> 3) check only one CMP with biv after find_interesting_uses, biv's width <
> POINTER_SIZE, remove the group
> 4) mark the biv preserved to avoid to be removed in remove_unused_ivs
> 5) adjust determine_iv_cost for those IVs which require extension
> (optinal, for this case, it's not necessary but probably good as more
> precise modeling)
>
> Hi All,
>
> I'm a new comer to gcc and not sure the above idea is practical enough,
> could you kindly give me some comments and suggestion?
Gibberish, I thought IVOPTs has been improved, but if we continue getting this
kind of sub-optimal issues, maybe we should try to re-implement it, as a group
of small passes each dedicating to specific transformation, rather than a big
mono pass.
Thanks
>From gcc-bugs-return-635592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 08:47:31 2019
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Subject: [Bug fortran/89531] New: Possible memory corruption in the gfortran front-end
Date: Thu, 28 Feb 2019 08:47:00 -0000
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Bug ID: 89531
Summary: Possible memory corruption in the gfortran front-end
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: GC
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Target: powerpc-*-linux-gnu*
Created attachment 45847
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45847&action=edit
Testcase
gfortran-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling the
attached testcase extracted from NAS Parallel Benchmarks 3.3.1:
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190224 -m32 -O3
-fno-predictive-commoning -fno-tree-scev-cprop -g --param ggc-min-expand=0
--param ggc-min-heapsize=0 --param loop-interchange-stride-ratio=0 --param
max-completely-peeled-insns=3 -c ym32njaj.f
I don't know whether this ICE is target-specific, as I don't have gfortran for
other targets for now.
This seems to be a GC-related error. The compiler crashes in different places,
depending on exact set of the command line arguments and source code included
in the reduced testcase.
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Subject: [Bug fortran/89531] Possible memory corruption in the gfortran front-end
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--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
Created attachment 45848
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Backtraces
Various backtraces observed during testcase minimization.
>From gcc-bugs-return-635594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 08:59:49 2019
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From: "ciro.santilli at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Thu, 28 Feb 2019 08:59:00 -0000
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--- Comment #8 from Ciro Santilli <ciro.santilli at gmail dot com> ---
Thanks for the reply, David.
Do you have the doc patch uploaded anywhere to serve as a starting point?
Quick things that we might need to change / clarify:
- is the x constraint documented somewhere? Mentioned at `b Use with "w" or
"x" constraint to print the register's 8bit B name.`
- also document the aarch32 modifiers, e.g. %P from this thread
- in
https://www.limegreensocks.com/arm/Machine-Constraints.html#Machine-Constraints
"ARM family" why do we have both 't' and 'w', since as per this thread s0 and
d0 are differentiated with a %P modifier?
I don't know GCC internals, but I know enough ARM assembly to experimentally
verify those very quickly and guess from the relevant source point if not too
convoluted, does not look too bad:
- ARM:
https://github.com/gcc-mirror/gcc/blob/gcc-8_2_0-release/gcc/config/arm/arm.c#L22466
- aarch64:
https://github.com/gcc-mirror/gcc/blob/gcc-8_2_0-release/gcc/config/aarch64/aarch64.c#L6743
>From gcc-bugs-return-635595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:12:50 2019
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Subject: [Bug c++/89532] New: internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
Date: Thu, 28 Feb 2019 09:12:00 -0000
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Bug ID: 89532
Summary: internal compiler error: in
type_has_nontrivial_copy_init, at cp/tree.c:4024
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Created attachment 45849
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testcase
Compiling the attached .ii file with -std=gnu++2a causes an ICE. The code has a
circular include, so the std::tuple type is not defined before it's used, so
the code is invalid. I haven't tried to reduce it.
I'm using:
gcc version 9.0.1 20190227 (experimental)
In file included from flat_map:44,
from flat_map.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h: In function
'constexpr auto std::__uses_alloc_piecewise_args(const _Alloc&, _Tuple1&&,
_Tuple2&&)':
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:285:19: error:
'make_tuple' is not a member of 'std'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:241:1: note:
'std::make_tuple' is defined in header '<tuple>'; did you forget to '#include
<tuple>'?
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:286:9: error:
'apply' is not a member of 'std'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:290:9: error:
'apply' is not a member of 'std'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h: At global scope:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:313:65: error:
invalid use of incomplete type 'class std::tuple<>'
In file included from /home/jwakely/gcc/9/include/c++/9.0.1/bits/move.h:55,
from /home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_pair.h:59,
from /home/jwakely/gcc/9/include/c++/9.0.1/utility:70,
from /home/jwakely/gcc/9/include/c++/9.0.1/algorithm:60,
from flat_map:36,
from flat_map.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/type_traits:2511:11: note: declaration of
'class std::tuple<>'
2511 | class tuple;
| ^~~~~
In file included from flat_map:44,
from flat_map.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/uses_allocator.h:313:65: internal
compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
0x6559ce type_has_nontrivial_copy_init(tree_node const*)
/home/jwakely/src/gcc/gcc/gcc/cp/tree.c:4024
0x9f169b build_target_expr_with_type(tree_node*, tree_node*, int)
/home/jwakely/src/gcc/gcc/gcc/cp/tree.c:800
0x9c52e3 finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
/home/jwakely/src/gcc/gcc/gcc/cp/semantics.c:2866
0x931c6b cp_parser_functional_cast
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:28237
0x943297 cp_parser_postfix_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:7098
0x950cb6 cp_parser_unary_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:8469
0x92c71f cp_parser_cast_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:9355
0x92cf2a cp_parser_binary_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:9457
0x92de69 cp_parser_assignment_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:9754
0x9312d0 cp_parser_parenthesized_expression_list
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:7902
0x942e51 cp_parser_postfix_expression
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:7248
0x944254 cp_parser_decltype_expr
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:14530
0x944254 cp_parser_decltype
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:14626
0x941cc7 cp_parser_simple_type_specifier
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:17666
0x9389b5 cp_parser_type_specifier
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:17448
0x94cf78 cp_parser_type_specifier_seq
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:21903
0x94a0a4 cp_parser_type_id_1
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:21732
0x949e1f cp_parser_trailing_type_id
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:21838
0x949e1f cp_parser_late_return_type_opt
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:21642
0x949e1f cp_parser_direct_declarator
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:20777
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-635596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:18:14 2019
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Subject: [Bug c/88088] -Wtrampolines should be enabled by -Wall (or -Wextra)
Date: Thu, 28 Feb 2019 09:18:00 -0000
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--- Comment #22 from Mark Wielaard <mark at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #21)
> (In reply to Mark Wielaard from comment #20)
> > https://gcc.gnu.org/ml/gcc-patches/2018-11/msg02055.html
>
> Did this make it in? If not, have you pinged it lately?
No, there was some review, I think we are generally good, but I am waiting for
stage1 to open.
>From gcc-bugs-return-635597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:25:51 2019
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Subject: [Bug c++/53646] Surprising effects of cxx11 vs cxx98 ABI compatibility
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #23 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think we can close this. The concrete issue of the pair(pair&&) move
constructor was fixed years ago as PR 53657, and I'm not aware of any more
incompatibilities in recent releases (where C++11 support is stable, and so
should be ABI compatible with C++98).
Any other incompatibilities are bugs and will be fixed if reported.
>From gcc-bugs-return-635598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:26:31 2019
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:27:05 2019
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:28:14 2019
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Subject: [Bug fortran/89531] Possible memory corruption in the gfortran front-end
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
WORKSFORME on x86_64-apple-darwin18 for the various revisions and options I
have tested.
>From gcc-bugs-return-635601-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:32:17 2019
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Subject: [Bug libstdc++/89452] basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Baykov Nikita from comment #0)
> 4. pptr() is a null pointer. Paragraphs [stringbuf.cons]/3,
> [streambuf.cons]/1, [stringbuf. members]/3 guarantee it.
That's no longer true, see PR 80676. It's still true in the libstdc++
implementation today though.
>From gcc-bugs-return-635602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:33:08 2019
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Subject: [Bug libstdc++/89446] [7/8 Regression] __builtin_constant_p expression crashes in char_traits::compare
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on all active branches.
>From gcc-bugs-return-635603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 09:47:16 2019
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Subject: [Bug libstdc++/89452] basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Baykov Nikita from comment #0)
> 4. pptr() is a null pointer. Paragraphs [stringbuf.cons]/3,
> [streambuf.cons]/1, [stringbuf. members]/3 guarantee it.
> 5. [stringbuf.virtuals]/10 specifies that the positioning operation fails,
> i.e., pos_type(-1) should be returned.
I disagree. p10 says it fails if pptr() is zero and newoff is nonzero. Because
way == ios_base::beg Table 113 says that newoff is zero, therefore it doesn't
fail.
This was changed many years ago by https://wg21.link/lwg453
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> This was changed many years ago by https://wg21.link/lwg453
... and clarified a few months ago by
https://github.com/cplusplus/draft/commit/af40423574aa8e3a495b382840a258f94cb6349d
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Subject: [Bug c++/89513] constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
Date: Thu, 28 Feb 2019 09:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45837|0 |1
is obsolete| |
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45850
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45850&action=edit
gcc9-pr89513.patch
Updated patch which actually implements P1002R1.
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Subject: [Bug c++/89522] [8/9 Regression] ICE: trying to capture 'f' in instantiation of generic lambda
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--- Comment #1 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Feb 28 10:27:03 2019
New Revision: 269275
URL: https://gcc.gnu.org/viewcvs?rev=269275&root=gcc&view=rev
Log:
2019-02-28 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89522
* g++.dg/cpp1y/lambda-generic-ice10.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-ice10.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89522] [8 Regression] ICE: trying to capture 'f' in instantiation of generic lambda
Date: Thu, 28 Feb 2019 10:28:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
Summary|[8/9 Regression] ICE: |[8 Regression] ICE: trying
|trying to capture 'f' in |to capture 'f' in
|instantiation of generic |instantiation of generic
|lambda |lambda
Ever confirmed|0 |1
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Already fixed in trunk.
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Subject: [Bug target/88530] [8/9 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
Date: Thu, 28 Feb 2019 10:44:00 -0000
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--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Thu Feb 28 10:43:41 2019
New Revision: 269276
URL: https://gcc.gnu.org/viewcvs?rev=269276&root=gcc&view=rev
Log:
AArch64: Have empty HWCAPs string ignored during native feature detection
This patch makes the feature detection code for AArch64 GCC not add features
automatically when the feature had no hwcaps string to match against.
This means that -mcpu=native no longer adds feature flags such as +profile.
The behavior wasn't noticed before because at the time +profile was added a bug
was preventing any feature bits from being added by native detections.
The loop has also been changed as Jakub specified in order to avoid a memory
leak that was present in the existing code and to be slightly more efficient.
gcc/ChangeLog:
PR target/88530
* config/aarch64/aarch64-option-extensions.def: Document it.
* config/aarch64/driver-aarch64.c (host_detect_local_cpu): Skip feature
if empty hwcaps.
gcc/testsuite/ChangeLog:
PR target/88530
* gcc.target/aarch64/options_set_10.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/aarch64/options_set_10.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64-option-extensions.def
trunk/gcc/config/aarch64/driver-aarch64.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 10:46:44 2019
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Subject: [Bug target/88530] [8 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] AArch64 |[8 Regression] AArch64
|Unsupported options passed |Unsupported options passed
|to assemblers when it |to assemblers when it
|doesn't need to. |doesn't need to.
--- Comment #6 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Fixed In trunk.
>From gcc-bugs-return-635610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 10:51:58 2019
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Subject: [Bug fortran/67542] ICE in gfc_emit_parameter_debug_info, at fortran/trans-decl.c:4947 and :4945
Date: Thu, 28 Feb 2019 10:51:00 -0000
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Yep, done.
Do you mean that the PR can be closed as FIXED?
I am wondering if the tests are valid Fortran.
>From gcc-bugs-return-635611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 10:56:01 2019
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Subject: [Bug fortran/87625] [OOP] (re)allocate on assignment fails for polymorphic array
Date: Thu, 28 Feb 2019 10:56:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Yes, can this please be back-ported? Still broken on at least 8.
This is not a regression.
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
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--- Comment #12 from ktkachov at gcc dot gnu.org ---
(In reply to Jakub Jelinek from comment #11)
> Created attachment 45839 [details]
> gcc9-pr89434.patch
>
> I'm testing this separately.
This patch is preapproved for trunk if testing is successful.
Thanks.
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Thu, 28 Feb 2019 11:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501
--- Comment #22 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
Created attachment 45851
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45851&action=edit
Work-in-progress fix considering relocations
I'm a bit stuck. I managed to precompute reloc value for the globals (the code
for detect_reloc_for_node() is stealed from get_variable_section ()). I also
succeded in putting dummy variable into .data.rel.ro by making a decl of a
pointer type. But .data.rel is not working: checks from varasm.c:1173 and
varasm.c:1197 are somewhat conflicting. Maybe you could find a way to overcome
this?
>From gcc-bugs-return-635614-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 11:37:31 2019
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From: "alexey.kutumov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89533] New: G++ incorrectly generates noexcept assignment operator
Date: Thu, 28 Feb 2019 11:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89533
Bug ID: 89533
Summary: G++ incorrectly generates noexcept assignment operator
Product: gcc
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Created attachment 45852
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45852&action=edit
minimal sample which reproduces problem
Consider following example (bad.cpp in atttachment). In this example i have
struct VectorWrapper with following assignment operator:
VectorWrapper& operator=(VectorWrapper) noexcept {
return *this;
}
Which is really noexcept
And copy ctor:
VectorWrapper(const VectorWrapper& ){
throw 42;
}
Which is *not* noexcept
If i wrap this struct into
struct MyData {
VectorWrapper vec;
};
And tries to copy one instance of MyData into another my program crashes even
if i try to catch exception (as seen in bad.cpp).
I suppose that compiler marks assignment operator of MyData as *noexcept* while
it actually is *NOT* noexcept, because it calls copy ctor of VectorWrapper.
I've filed same bug to MSVC:
https://developercommunity.visualstudio.com/content/problem/456988/program-crashes-while-throwing-exception-inside-ge.html?childToView=470086#comment-470086
They said that there is a bug in implementation:
For reference, here's what the Standard has to say:
The exception specification for an implicitly-declared assignment operator, or
an assignment-operator without a noexcept-specifier that is defaulted on its
first declaration, is potentially-throwing if and only if the invocation of any
assignment operator in the implicit definition is potentially-throwing
http://eel.is/c++draft/except.spec#9
Our interpretation of "invocation of any assignment operator" includes the
argument conversions required, not just the specific function(s) being called.
This wording changed quite a bit since C++14, where it explicitly called out
"any function it directly invokes" which would more obviously include the copy
constructor call, yet still no compiler I tried implemented this.
>From gcc-bugs-return-635615-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 12:18:35 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89534] New: mingw is not declarting MAKE_DECL_ONE_ONLY macro
Date: Thu, 28 Feb 2019 12:18:00 -0000
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Bug ID: 89534
Summary: mingw is not declarting MAKE_DECL_ONE_ONLY macro
Product: gcc
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I'm curious why the target is not using
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
is it intentional or a missing feature?
>From gcc-bugs-return-635616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 12:21:28 2019
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89535] New: [9 Regression] ICE when building 416.gamess in prepare_load_store_mask
Date: Thu, 28 Feb 2019 12:21:00 -0000
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Bug ID: 89535
Summary: [9 Regression] ICE when building 416.gamess in
prepare_load_store_mask
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Target: aarch64
I get an ICE when building 416.gamess with -O2 -ftree-vectorize
-march=armv8.4-a+sve -funconstrained-commons -w -std=legacy on aarch64
The reduced testcase is:
SUBROUTINE FOO(ISH,JSH,P1,P2)
PARAMETER (MXGTOT=5000, MXGSH=30)
DIMENSION TMP2(MXGSH), CCBS(MXGSH)
DIMENSION TMP1(MXGTOT,5)
DIMENSION P1(15,*)
LOGICAL SPI,SPJ
COMMON LIT,LOCI,MINI,NIJ
LOCI=KLOC(ISH)-MINI
SPI=LIT.EQ.2.AND.MINI.EQ.1
DO 10 I=I1,I2
NGA=NGA+1
IF(SPI) TMP2(NGA)=TMP1(I,1)/TMP1(I,2)
10 CONTINUE
DO 20 J=J1,J2
IF(SPJ) CCBS(NGB)=TMP1(J,1)/TMP1(J,2)
20 CONTINUE
NIJ=0
DO 300 IA=1,NGA
DO 200 JB=1,NGB
IF(DUM.GT.RTOL) GO TO 200
IF(DUM.LE.DTOL) GO TO 200
IF(SPI) P1(14,NIJ+P2)=TMP2(IA)
IF(SPJ) P1(15,NIJ+P2)=CCBS(JB)
200 CONTINUE
300 CONTINUE
RETURN
END
The ICE is:
during GIMPLE pass: vect
reduce.f:1:0:
1 | SUBROUTINE FOO(ISH,JSH,P1,P2)
|
internal compiler error: in prepare_load_store_mask, at tree-vect-stmts.c:1922
0xf50214 prepare_load_store_mask
$SRC/gcc/tree-vect-stmts.c:1922
0xf72344 vectorizable_call
$SRC/gcc/tree-vect-stmts.c:3490
0xf749fb vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*,
_slp_tree*, _slp_instance*)
$SRC/gcc/tree-vect-stmts.c:9829
0xf76386 vect_transform_loop_stmt
$SRC/gcc/tree-vect-loop.c:8199
0xf7f88c vect_transform_loop(_loop_vec_info*)
$SRC/gcc/tree-vect-loop.c:8418
0xfa86b4 try_vectorize_loop_1
$SRC/gcc/tree-vectorizer.c:979
0xfa9171 vectorize_loops()
$SRC/gcc/tree-vectorizer.c:1111
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-635617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 12:44:47 2019
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Subject: [Bug rtl-optimization/80791] [8/9 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Thu, 28 Feb 2019 12:44:00 -0000
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--- Comment #24 from Kewen Lin <linkw at gcc dot gnu.org> ---
(In reply to bin cheng from comment #23)
> (In reply to Kewen Lin from comment #22)
> > As the discussion above, on Power any IV should have an extend (sign/zero)
> > if its width is less than the GPR width (POINTER_SIZE equivalent here).
> > Although we don't model this precisely on Power, in most cases it's trivial
> > since we have TYPE_PRECISION check for those inconsistent width uses, extra
> > cost will be added, the IV is still the one we prefer even with extension
> > consideration in cost modeling, that is, considering extension or not
> > doesn't affect the result.
> I wonder if a pre-Loop-Opt pass promotes (maybe only induction) variables to
> GPR size for usual/simple cases could be helpful? That is, lift burden by
> canonicalizing input to IVOPTs as much as possible. As a mono pass, the
> extensibility is not good enough to cover every case, especially based on
> possible following optimization.
It's a very good idea to make some prepass canonicalization, but for this case
it seems we can't guarantee it's safe to promote. Compiler knows nothing about
narrower range of argument m of function f (without lto), it's possible that m
holds INT_MAX (or some values easy to wrap), if we aggressively promote it, it
will have different semantic without extend. I agree that we can determine the
range (range analysis) and get rid of the extend for some cases, or maybe
versioning overflow conditions to get a specialized version without any
possibility to overflow but it sounds too complicated.
>
> >
> > In this case, we have one GENERIC use and one CMP use. Cand 4 was chosen as
> > the best, but later RTL opts can eliminate CMP use by using counter register
> > for the loop closing, it means we don't need to consider CMP use in ivopts
> > phase. Since there is no any uses for 32bit IV, the extension cost can NOT
> > be covered (ignored) as usual.
> >
> > The cost for GENERIC use looks like [cand $index ($iv_cost + $comp_cost)]:
> > 1) without considering extension cost, cand 4 (4 + 4) vs. cand 6 (5 + 0)
> > 2) with considering extension cost, cand 4 (8 + 4) vs. cand 6 (9 + 0)
> > Since cand 6 can't be used for CMP use, so if we still need to consider CMP,
> > cand 4 is always selected, the cost would be larger introducing cand 6.
> > But if can predict CMP is useless and model extension, the cost would be:
> > cand 4 (8 + 4) vs. cand 6 (9 + 0). Cand 6 is better.
> Elimination of CMP with doloop is not modeled in IVOPTs now, would be great
> to have that. With that support, cand 6 would be chosen regardless of
> extension here, right? Of course, computing cost based on possibly
> eliminable cand/use is totally another issue and is even harder.
Yes! The key thing here is that the eliminable CMP isn't modeled, the extension
modeling isn't important (that's why it's optional in below step 5) :)
>
>
> >
> > I did some hacks locally and it works. But the most tricky and hardest part
> > would be how to predict CMP will be optimized away with CTR eventually,
> > the correctness of predict is more important. It looks better to think about
> > the simplest case first. The proposed idea is that:
> > 1) one target specific hook/flag to enable this adjust
> > 2) one target specific predict function to determine the loop can benefit
> > do_loop CTR transformation (like innermost loop, no calls, niter determined
> > etc.)
> > 3) check only one CMP with biv after find_interesting_uses, biv's width <
> > POINTER_SIZE, remove the group
> > 4) mark the biv preserved to avoid to be removed in remove_unused_ivs
> > 5) adjust determine_iv_cost for those IVs which require extension
> > (optinal, for this case, it's not necessary but probably good as more
> > precise modeling)
> >
> > Hi All,
> >
> > I'm a new comer to gcc and not sure the above idea is practical enough,
> > could you kindly give me some comments and suggestion?
>
> Gibberish, I thought IVOPTs has been improved, but if we continue getting
> this kind of sub-optimal issues, maybe we should try to re-implement it, as
> a group of small passes each dedicating to specific transformation, rather
> than a big mono pass.
I could be wrong, but I think IVOPTs becomes pretty good with your and others'
efforts. (Really appreciate!) I'm not sure whether there are more similar
issues, but it looks understandable to have some limitations or some
sub-optimal scenarios, since sometimes we don't have enough or precise inputs,
like this case, it's hard to precisely predict CMP eliminable or not, have to
use heuristics/checks to archive try-your-best optimal.
Thanks!
>
> Thanks
>From gcc-bugs-return-635618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 12:59:20 2019
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Subject: [Bug rtl-optimization/85899] [8/9 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
Date: Thu, 28 Feb 2019 12:59:00 -0000
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--- Comment #4 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
It appears that fallthru edges to the exit block are unusual in that they don't
obey the invariant e->dest == e->src->next_bb (i.e. next_bb may be anything).
If so, the assert in haifa-sched needs to be relaxed, so I'm going to
bootstrap/regtest the following:
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -8082,7 +8082,7 @@ find_fallthru_edge_from (basic_block pred)
if (e)
{
- gcc_assert (e->dest == succ);
+ gcc_assert (e->dest == succ || e->dest->index == EXIT_BLOCK);
return e;
}
}
>From gcc-bugs-return-635620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:01:05 2019
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |raj.khem at gmail dot com
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89527 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:01:03 2019
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Subject: [Bug target/89527] GCC ICE internal compiler error during RTL pass: mach on arm/thumb2 compiling glibc
Date: Thu, 28 Feb 2019 13:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Already tracked in PR89434.
*** This bug has been marked as a duplicate of bug 89434 ***
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Subject: [Bug c++/89151] SFINAE-disabled member hides another
Date: Thu, 28 Feb 2019 13:08:00 -0000
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--- Comment #5 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
Appears to be fixed in GCC 8.3.0
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Subject: [Bug target/89434] [7/8 Regression] wrong code with -Og and __builtin_mul_overflow()
Date: Thu, 28 Feb 2019 13:14:00 -0000
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 28 13:13:33 2019
New Revision: 269277
URL: https://gcc.gnu.org/viewcvs?rev=269277&root=gcc&view=rev
Log:
PR target/89434
* config/arm/arm.md (*subsi3_carryin_compare_const): Use
trunc_int_for_mode (-INTVAL (...), SImode), just instead of
-UINTVAL (...).
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89497] [8/9 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Thu, 28 Feb 2019 13:15:00 -0000
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--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #18)
> GIMPLE testcase that doesn't fail, possibly because of NOPs or because of
> missing range info or whatever...
>
> typedef struct {
> char array[81];
> } container;
> container *get();
> int guard = 0;
> container c;
>
> void __GIMPLE (startwith("vrp1"))
> d ()
> {
> long unsigned int len2;
> container * a;
> char * _1;
> int _18;
> int i_19;
>
> bb_2:
> a_6 = get ();
> if (a_6 != _Literal (struct container *) 0)
> goto bb_3;
> else
> goto bb_8;
>
> bb_3:
> _18 = guard;
> if (_18 != 0)
> goto bb_5;
> else
> goto bb_4;
>
> bb_4:
> ;
>
> bb_5:
> i_19 = __PHI (bb_3: 0, bb_4: 1);
> _1 = &a_6->array[0];
> len2_15 = __builtin_strlen (&c.array);
> if (len2_15 > 81ul)
> goto bb_6;
> else
> goto bb_7;
>
> bb_6:
> ;
>
> bb_7:
> len2_17 = __PHI (bb_5: len2_15, bb_6: 81ul);
> __builtin_memmove (_1, &c.array, len2_17);
>
> bb_8:
> return;
>
> }
Who knows, I can see the jump threading happens:
Visiting statement:
_1_23 = &a_25->array[0];
LKUP STMT len2_15 = __builtin_strlen (&c.array) with .MEM_22
<<<< COPY i_19_19 = 1
Registering jump thread: (4, 5) incoming edge; (5, 9) normal;
1>>> STMT 1 = len2_15 le_expr 81
1>>> STMT 0 = len2_15 gt_expr 81
0>>> COPY len2_27 = len2_15
<<<< STMT 0 = len2_15 gt_expr 81
<<<< STMT 1 = len2_15 le_expr 81
<<<< COPY len2_27 = len2_15
0>>> COPY i_19_19 = 0
LKUP STMT _1_23 = &a_25->array[0]
Visiting statement:
_1_23 = &a_25->array[0];
LKUP STMT len2_15 = __builtin_strlen (&c.array) with .MEM_22
<<<< COPY i_19_19 = 0
Registering jump thread: (3, 5) incoming edge; (5, 9) normal;
Threaded jump 4 --> 5 to 10
Threaded jump 3 --> 5 to 10
Removing basic block 5
;; basic block 5, loop depth 0
;; pred:
# i_19_19 = PHI <>
bb_5:
_1_23 = &a_6->array[0];
len2_15 = __builtin_strlen (&c.array);
if (0 != 0)
goto <bb 6>; [INV]
else
goto <bb 9>; [INV]
;; succ: 6
;; 9
and the BB is removed, but I can't see the ICE.
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Subject: [Bug testsuite/89441] FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for excess errors)
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Feb 28 13:17:09 2019
New Revision: 269278
URL: https://gcc.gnu.org/viewcvs?rev=269278&root=gcc&view=rev
Log:
Fix test-case visibility (PR testsuite/89441).
2019-02-28 John David Anglin <danglin@gcc.gnu.org>
PR testsuite/89441
* g++.dg/ipa/pr89009.C: Update symbol visibility.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/ipa/pr89009.C
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Subject: [Bug testsuite/89441] FAIL: g++.dg/ipa/pr89009.C -std=gnu++98 (test for excess errors)
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/63164] unnecessary calls to __dynamic_cast
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess when we implement http://wg21.link/p1327r1 we could use the same
function to optimize __dynamic_cast in constexpr as well as if during
optimization we determine which vtable a particular __dynamic_cast call is
called with and optimize that too if possible.
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Subject: [Bug tree-optimization/89535] [9 Regression] ICE when building 416.gamess in prepare_load_store_mask
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
CC| |jakub at gcc dot gnu.org
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r262589.
>From gcc-bugs-return-635628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:50:19 2019
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Subject: [Bug c/89521] ICE in expand_builtin_int_roundingfn, at builtins.c:2697
Date: Thu, 28 Feb 2019 13:50:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 28 13:49:38 2019
New Revision: 269280
URL: https://gcc.gnu.org/viewcvs?rev=269280&root=gcc&view=rev
Log:
PR c/89521
* gcc.dg/pr89521-1.c: New test.
* gcc.dg/pr89521-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89521-1.c
trunk/gcc/testsuite/gcc.dg/pr89521-2.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/89520] [7/8 Regression] ICE tree check: accessed operand 4 of call_expr with 3 operands in convert_to_integer_1, at convert.c:668
Date: Thu, 28 Feb 2019 13:51:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89521 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635629-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:51:53 2019
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Subject: [Bug c/89521] ICE in expand_builtin_int_roundingfn, at builtins.c:2697
Date: Thu, 28 Feb 2019 13:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The PR89520 fix actually fixed this one too.
*** This bug has been marked as a duplicate of bug 89520 ***
>From gcc-bugs-return-635631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:56:54 2019
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Subject: [Bug tree-optimization/89535] [9 Regression] ICE when building 416.gamess in prepare_load_store_mask
Date: Thu, 28 Feb 2019 13:56:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Mine then.
>From gcc-bugs-return-635632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 13:57:51 2019
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
Date: Thu, 28 Feb 2019 13:57:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|internal compiler error: in |[9 Regression] internal
|type_has_nontrivial_copy_in |compiler error: in
|it, at cp/tree.c:4024 |type_has_nontrivial_copy_in
| |it, at cp/tree.c:4024
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed. Started with r268969 ... oops. I'll reduce.
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Subject: [Bug preprocessor/60875] `_Pragma("message \"foo\")"` doesn't work in expression contexts.
Date: Thu, 28 Feb 2019 14:09:00 -0000
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Nikita Kniazev <nok.raven at gmail dot com> changed:
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--- Comment #4 from Nikita Kniazev <nok.raven at gmail dot com> ---
Is this forbidden by the standard? The Clang and MSVC are fine with such pragma
usage. It really complicates warning suppression.
int main()
{
return
#pragma GCC diagnostic push
42;
}
<source>: In function 'int main()':
<source>:4:9: error: '#pragma' is not allowed here
4 | #pragma GCC diagnostic push
| ^~~
<source>:4:12: error: expected ';' before numeric constant
4 | #pragma GCC diagnostic push
| ^
| ;
5 | 42;
| ~~
https://godbolt.org/z/mT1h0Z
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Subject: [Bug target/89456] target attribute doesn't work well with -mXXX
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45853
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45853&action=edit
A patch
>From gcc-bugs-return-635635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:14:53 2019
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89536] New: wrong code at -Os and above on x86_64-linux-gnu
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Bug ID: 89536
Summary: wrong code at -Os and above on x86_64-linux-gnu
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This appears to be a recent regression.
$ gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190228 (experimental) [trunk revision 269278] (GCC)
$
$ gcctk -O1 small.c; ./a.out
$
$ gcctk -Os small.c
$ ./a.out
Aborted (core dumped)
$
-----------------------------
int a = 1;
int main ()
{
a = ~(a && 1);
if (a < -1)
a = ~a;
if (!a)
__builtin_abort ();
return 0;
}
>From gcc-bugs-return-635636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:16:16 2019
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Subject: [Bug preprocessor/60875] `_Pragma("message \"foo\")"` doesn't work in expression contexts.
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Those pragmas are all extensions, so the standard doesn't cover them.
>From gcc-bugs-return-635637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:25:32 2019
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Subject: [Bug target/89455] [9 Regression] FAIL: g++.target/i386/mv16.C on Westmere
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--- Comment #1 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Feb 28 14:24:52 2019
New Revision: 269281
URL: https://gcc.gnu.org/viewcvs?rev=269281&root=gcc&view=rev
Log:
i386: Identify Westmere from PCLMUL
Since AES has been removed from Westmere in GCC 9, we should identify
Westmere from PCLMUL, instead of AES.
PR target/89455
* config/i386/i386.c (get_builtin_code_for_version): Identify
Westmere from PCLMUL, instead of AES.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
>From gcc-bugs-return-635639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:26:04 2019
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Subject: [Bug tree-optimization/89536] [9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
CC| |jakub at gcc dot gnu.org
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|wrong code at -Os and above |[9 Regression] wrong code
|on x86_64-linux-gnu |at -Os and above on
| |x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Indeed, started to differ in dom2, around Feb 25th/26th, will bisect in detail
when our bisect seed is populated.
>From gcc-bugs-return-635641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:35:59 2019
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Summary|[9 Regression] wrong code |[8/9 Regression] wrong code
|at -Os and above on |at -Os and above on
|x86_64-linux-gnu |x86_64-linux-gnu
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r269208.
>From gcc-bugs-return-635642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 14:49:20 2019
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I wonder if we shouldn't do:
--- gcc/tree-ssa-dom.c.jj 2019-02-26 14:13:08.296824100 +0100
+++ gcc/tree-ssa-dom.c 2019-02-28 15:46:52.285495060 +0100
@@ -346,6 +346,9 @@ edge_info::derive_equivalences (tree nam
boolean types with precision > 1. */
if (code == BIT_NOT_EXPR
&& TREE_CODE (rhs) == SSA_NAME
+ && (TREE_CODE (TREE_TYPE (rhs)) == BOOLEAN_TYPE
+ || (INTEGRAL_TYPE_P (TREE_TYPE (rhs))
+ && TYPE_PRECISION (TREE_TYPE (rhs)) == 1))
&& ssa_name_has_boolean_range (rhs))
{
if (integer_zerop (value))
because while ssa_name_has_boolean_range returns true for both the case where
the type is BOOLEAN_TYPE and where the type is integral with precision 1 (and
unsigned), we do not want to do this if the type has larger precision and just
the value has [0, 1] value range.
Perhaps we just should do the checks and not call ssa_name_has_boolean_range
here.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89536
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45854
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45854&action=edit
gcc9-pr89536.patch
Full untested patch.
>From gcc-bugs-return-635645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:02:22 2019
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Subject: [Bug c++/89537] New: missing location for error
Date: Thu, 28 Feb 2019 15:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89537
Bug ID: 89537
Summary: missing location for error
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
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The attached code fails to compile (with -std=gnu++20) because it does
addressof(fm->keys) instead of addressof(fm->keys()).
The error is ecpected, but it fails to show the location where the error
happens, just showing "cc1plus" instead:
inc/flat_map: In instantiation of 'std::_Flat_map_iterator<_KeyCont,
_MappedCont, _IsConst>::_Flat_map_iterator(std::flat_map<typename
_KeyCont::value_type, typename _MappedCont::value_type, _Compare, _KeyCont,
_MappedCont>*, std::size_t) [with _Compare = std::less<void>; _KeyCont =
std::vector<int, std::pmr::polymorphic_allocator<int> >; _MappedCont =
std::vector<int, std::allocator<int> >; bool _IsConst = false; typename
_MappedCont::value_type = int; typename _KeyCont::value_type = int; std::size_t
= long unsigned int]':
inc/flat_map:522:50: required from 'std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::iterator std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::begin() [with _Key = int; _Tp = int; _Compare =
std::less<void>; _KeyContainer = std::vector<int,
std::pmr::polymorphic_allocator<int> >; _MappedContainer = std::vector<int,
std::allocator<int> >; std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::iterator = std::_Flat_map_iterator<std::vector<int,
std::pmr::polymorphic_allocator<int> >, std::vector<int, std::allocator<int> >,
false>]'
flat_map.cc:9:11: required from here
cc1plus: error: invalid use of non-static member function 'const
key_container_type& std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::keys() const [with _Key = int; _Tp = int; _Compare
= std::less<void>; _KeyContainer = std::vector<int,
std::pmr::polymorphic_allocator<int> >; _MappedContainer = std::vector<int,
std::allocator<int> >; std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::key_container_type = std::vector<int,
std::pmr::polymorphic_allocator<int> >]'
In file included from flat_map.cc:1:
inc/flat_map:771:7: note: declared here
771 | value_compare value_comp() const { return
value_compare(key_comp()); }
| ^~~~
cc1plus: error: invalid use of non-static member function 'const
mapped_container_type& std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::values() const [with _Key = int; _Tp = int;
_Compare = std::less<void>; _KeyContainer = std::vector<int,
std::pmr::polymorphic_allocator<int> >; _MappedContainer = std::vector<int,
std::allocator<int> >; std::flat_map< <template-parameter-1-1>,
<template-parameter-1-2>, <template-parameter-1-3>, <template-parameter-1-4>,
<template-parameter-1-5> >::mapped_container_type = std::vector<int,
std::allocator<int> >]'
inc/flat_map:774:7: note: declared here
774 | keys() const noexcept { return _M_impl.keys; }
| ^~~~~~
I haven't tried to reduce this yet.
>From gcc-bugs-return-635646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:03:10 2019
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Subject: [Bug c++/89537] missing location for error
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 45855
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45855&action=edit
gzipped unreduced testcase
>From gcc-bugs-return-635647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:08:55 2019
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Subject: [Bug fortran/89496] [9 Regression] gcc/fortran/trans-types.c:3015:9: runtime error: member access within null pointer of type 'struct gfc_formal_arglist'
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Damian Rouson <damian at sourceryinstitute dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |damian at sourceryinstitute dot or
| |g
--- Comment #7 from Damian Rouson <damian at sourceryinstitute dot org> ---
Thanks for fixing this! It eliminates an ICE in a legacy code I'm currently
modernizing.
>From gcc-bugs-return-635648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:27:54 2019
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Subject: [Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Any progress on this?
>From gcc-bugs-return-635649-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:37:16 2019
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Subject: [Bug c++/89537] missing location for error
Date: Thu, 28 Feb 2019 15:37:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
That error comes from invalid_nonstatic_memfn_p so I'll see if I can figure out
why the location is broken. Will need to reduce it first though.
>From gcc-bugs-return-635650-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 15:52:46 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #9)
> So, shall we never try ck_list conversion for CONSTRUCTORs with any
> designators (while for -std=c++2a we'll complain if there is a mix of
> designated initializer clauses and non-designated initializ clauses, I think
> we don't diagnose that earlier, so maybe we need to cache it in some
> CONSTRUCTOR flag?), or never any conversion but ck_aggr?
If there are designated initializers, ck_aggr is the only thing that makes
sense.
>From gcc-bugs-return-635651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 16:06:41 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So like (untested):
--- gcc/call.c.jj 2019-02-28 08:14:58.251562934 +0100
+++ gcc/call.c 2019-02-28 17:04:49.697357298 +0100
@@ -819,7 +819,7 @@ build_list_conv (tree type, tree ctor, i
conversion **subconvs = alloc_conversions (len);
conversion *t;
unsigned i;
- tree val;
+ tree val, idx;
/* Within a list-initialization we can have more user-defined
conversions. */
@@ -833,8 +833,12 @@ build_list_conv (tree type, tree ctor, i
|| VOID_TYPE_P (elttype))
return NULL;
- FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (ctor), i, val)
+ FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (ctor), i, idx, val)
{
+ /* If there are any designators, ck_list is not valid. */
+ if (idx != NULL_TREE)
+ return NULL;
+
conversion *sub
= implicit_conversion (elttype, TREE_TYPE (val), val,
false, flags, complain);
@@ -1030,7 +1034,7 @@ build_complex_conv (tree type, tree ctor
unsigned HOST_WIDE_INT len = CONSTRUCTOR_NELTS (ctor);
tree elttype = TREE_TYPE (type);
unsigned i;
- tree val;
+ tree idx, val;
bool bad = false;
bool user = false;
enum conversion_rank rank = cr_exact;
@@ -1040,8 +1044,12 @@ build_complex_conv (tree type, tree ctor
flags = LOOKUP_IMPLICIT|LOOKUP_NO_NARROWING;
- FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (ctor), i, val)
+ FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (ctor), i, idx, val)
{
+ /* If there are any designators, complex conv is not valid. */
+ if (idx != NULL_TREE)
+ return NULL;
+
conversion *sub
= implicit_conversion (elttype, TREE_TYPE (val), val,
false, flags, complain);
@@ -1896,7 +1904,7 @@ implicit_conversion (tree to, tree from,
if (nelts == 0)
elt = build_value_init (to, tf_none);
- else if (nelts == 1)
+ else if (nelts == 1 && CONTRUCTOR_ELT (expr, 0)->index == NULL_TREE)
elt = CONSTRUCTOR_ELT (expr, 0)->value;
else
elt = error_mark_node;
>From gcc-bugs-return-635652-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 16:13:17 2019
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Subject: [Bug ipa/88235] [7/8/9 Regression] ICE: verify_cgraph_node failed (error: edge points to wrong declaration)
Date: Thu, 28 Feb 2019 16:13:00 -0000
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--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I think you can add cgraph predicate
former_thunk_p which tests that
return !thunk_p && (thunk_info.fixed_offset || virtual_offset_p ||
indirect_offset)
Every thunk should set one of those (it may be good to also add sanity check
that whenever thunk_p the second part of condition suceeds).
This way you don't need to change all uses of thunk_p and patch won't break LTO
streaming once backported to gcc8.
Honza
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
#c2 with it still fails though.
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
struct tuple;
template <decltype(tuple {})>
struct S { };
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Subject: [Bug lto/88585] [9 Regression] ICE in fld_incomplete_type_of, at tree.c:5295
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--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Thu Feb 28 16:45:44 2019
New Revision: 269282
URL: https://gcc.gnu.org/viewcvs?rev=269282&root=gcc&view=rev
Log:
PR lto/88585
* tree.c (find_atomic_core_type): Move ahead in file.
(check_base_type): Correctly compare alignments of atomic types.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug lto/88585] [9 Regression] ICE in fld_incomplete_type_of, at tree.c:5295
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45856
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45856&action=edit
WIP
For that test the following helps, but guess I'm still not handling anonymous
aggregates right there.
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Subject: [Bug c++/89537] missing location for error
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
template <typename> class A {};
template <typename, typename, typename, typename> class B;
class C {
using mapped_type = int;
public:
template <typename _Compare>
C(B<mapped_type, _Compare, A<int>, A<int>> *p1, unsigned)
: keys(p1->keys), values(p1->values) {}
A<int> keys;
A<int> values;
};
class D {
public:
using key_compare = int;
template <typename _Alloc> D(key_compare, _Alloc);
};
template <typename _Tp, typename, typename, typename = A<_Tp>> class B {
using _Impl = D;
_Impl _M_impl;
public:
using key_compare = int;
using iterator = C;
template <typename _Alloc> B(key_compare p1, _Alloc p2) : _M_impl(p1, p2) {}
template <typename _Alloc> B(_Alloc p1) : B(key_compare(), p1) {}
iterator begin() { return {this, 0}; }
void keys();
void values();
};
void fn1() {
B<int, int, A<int>> m(fn1);
m.begin();
}
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Subject: [Bug c++/89537] missing location for error
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
loc is UNKNOWN_LOCATION:
(gdb) up
#1 0x0000000000b98003 in invalid_nonstatic_memfn_p (loc=0, expr=<function_decl
0x7fffeaaf8000 keys>,
complain=3) at /home/mpolacek/src/gcc/gcc/cp/typeck.c:1896
1896 error_at (loc, "invalid use of non-static member function
%qD",
(gdb) p loc
$1 = 0
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I am happy with the patch in #5, so you can consider it pre-approved. It is
probably your call whether to declare the code invalid at first place.
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
Date: Thu, 28 Feb 2019 17:17:00 -0000
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--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I wonder if we shouldn't do:
> --- gcc/tree-ssa-dom.c.jj 2019-02-26 14:13:08.296824100 +0100
> +++ gcc/tree-ssa-dom.c 2019-02-28 15:46:52.285495060 +0100
> @@ -346,6 +346,9 @@ edge_info::derive_equivalences (tree nam
> boolean types with precision > 1. */
> if (code == BIT_NOT_EXPR
> && TREE_CODE (rhs) == SSA_NAME
> + && (TREE_CODE (TREE_TYPE (rhs)) == BOOLEAN_TYPE
> + || (INTEGRAL_TYPE_P (TREE_TYPE (rhs))
> + && TYPE_PRECISION (TREE_TYPE (rhs)) == 1))
> && ssa_name_has_boolean_range (rhs))
> {
> if (integer_zerop (value))
>
> because while ssa_name_has_boolean_range returns true for both the case
> where the type is BOOLEAN_TYPE and where the type is integral with precision
> 1 (and unsigned), we do not want to do this if the type has larger precision
> and just the value has [0, 1] value range.
> Perhaps we just should do the checks and not call ssa_name_has_boolean_range
> here.
There is very likely the same issue in the BIT_AND_EXPR case then.
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Subject: [Bug c++/89537] missing location for error
Date: Thu, 28 Feb 2019 17:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89537
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
With this patch
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index fb67d905acd..d9073d7c23d 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -4246,7 +4246,7 @@ resolve_args (vec<tree, va_gc> *args, tsubst_flags_t
complain)
error ("invalid use of void expression");
return NULL;
}
- else if (invalid_nonstatic_memfn_p (arg->exp.locus, arg, complain))
+ else if (invalid_nonstatic_memfn_p (EXPR_LOCATION (arg), arg, complain))
return NULL;
}
return args;
diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c
index 1db9333b5ff..1bf9ad88141 100644
--- a/gcc/cp/typeck.c
+++ b/gcc/cp/typeck.c
@@ -2562,7 +2562,8 @@ build_class_member_access_expr (cp_expr object, tree
member,
type = unknown_type_node;
/* Note that we do not convert OBJECT to the BASELINK_BINFO
base. That will happen when the function is called. */
- result = build3 (COMPONENT_REF, type, object, member, NULL_TREE);
+ result = build3_loc (input_location, COMPONENT_REF, type, object,
member,
+ NULL_TREE);
}
else if (TREE_CODE (member) == CONST_DECL)
{
we get
89537.C:9:18: error: invalid use of non-static member function ‘void B<
<template-parameter-1-1>, <template-parameter-1-2>, <template-parameter-1-3>,
<template-parameter-1-4> >::keys() [with _Tp = int; <template-parameter-1-2> =
int; <template-parameter-1-3> = A<int>; <template-parameter-1-4> = A<int>]’
9 | : keys(p1->keys), values(p1->values) {}
| ~~~~^~~~
89537.C:28:8: note: declared here
28 | void keys();
| ^~~~
so I guess it'd be an improvement.
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 28 17:29:48 2019
New Revision: 269283
URL: https://gcc.gnu.org/viewcvs?rev=269283&root=gcc&view=rev
Log:
PR c++/88049 - ICE with undefined destructor and anon namespace.
A type in an anonymous namespace can never be merged with one from
another translation unit, so a member of such a type is always its own
prevailing decl.
* lto-symtab.c (lto_symtab_prevailing_virtual_decl): Return early
for a type in an anonymous namespace.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr88049_0.C
Modified:
trunk/gcc/lto/ChangeLog
trunk/gcc/lto/lto-symtab.c
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #5)
> There is very likely the same issue in the BIT_AND_EXPR case then.
Isn't that different though? I mean, even if we have int type and have [0, 1]
range and have a check that the value isn't 0, then it must be 1.
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Subject: [Bug c++/88049] [7/8 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r23
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|lto_symtab_prevailing_virtu |lto_symtab_prevailing_virtu
|al_decl at |al_decl at
|gcc/lto/lto-symtab.c:1075 |gcc/lto/lto-symtab.c:1075
|since r231671 |since r23
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug fortran/67542] ICE in gfc_emit_parameter_debug_info, at fortran/trans-decl.c:4947 and :4945
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--- Comment #11 from G. Steinmetz <gscfq@t-online.de> ---
Well, the ICEs are gone for all posted test cases above.
Assuming that different shapes are not supported as an extension
(aka feature), as such they are not standard-conforming.
F2018 7.5.10 item 2 says
"... expr shall conform in the same way as for a variable
and expr in an intrinsic assignment statement (10.2.1.2).
If necessary, each value of intrinsic type is converted
according to the rules of intrinsic assignment (10.2.1.3)
to a value that agrees in type and type parameters with
the corresponding component of the derived type. For a
nonpointer nonallocatable component, the shape of the
expression shall conform with the shape of the component."
In the following modified example z1.f90 from comment 0
x and z should be flagged with an error :
$ cat z1b.f90
program p
type t
integer :: n
character :: c(2)
end type
type(t) :: x = t(1, ['a'])
type(t) :: y = t(2, ['a', 'b'])
type(t) :: z = t(3, ['a', 'b', 'c'])
end
---
In the meantime I felt compelled to dig a little further ...
and unfortunately there are more variants, which fail.
(also depending on presence/absence of parameter attribute,
prints, compile options)
$ cat za.f90
program p
type t
integer :: a(1)
integer :: b(1)
end type
type(t), parameter :: z(2) = t([1,2], [3])
end
$ gfortran-9-20190224 -c za.f90
$ gfortran-9-20190224 -c za.f90 -g
za.f90:7:0:
7 | end
|
internal compiler error: in native_encode_initializer, at dwarf2out.c:20274
0x804af8 native_encode_initializer
../../gcc/dwarf2out.c:20274
0x804a97 native_encode_initializer
../../gcc/dwarf2out.c:20316
0x804ad7 native_encode_initializer
../../gcc/dwarf2out.c:20259
0x826d15 tree_add_const_value_attribute
../../gcc/dwarf2out.c:20374
#...
$ cat zb.f90
program p
type t
integer :: a(1)
integer :: b(1)
end type
type(t), parameter :: z(2) = t([1,2], [3])
print *, z
end
$ gfortran-9-20190224 -c zb.f90 # -g not necessary
zb.f90:8:0:
8 | end
|
internal compiler error: in output_constructor_regular_field, at varasm.c:5207
0xda71d1 output_constructor_regular_field
../../gcc/varasm.c:5207
0xda71d1 output_constructor
../../gcc/varasm.c:5513
0xda68a5 output_constant
../../gcc/varasm.c:4885
0xda68a5 output_constructor_regular_field
../../gcc/varasm.c:5246
#...
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Isn't that different though? I mean, even if we have int type and have [0,
> 1] range and have a check that the value isn't 0, then it must be 1.
Then I don't understand the problem in the BIT_NOT_EXPR case: we h
>From gcc-bugs-return-635669-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 17:51:29 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Thu, 28 Feb 2019 17:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45856|0 |1
is obsolete| |
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45857
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45857&action=edit
gcc9-pr71446-wip.patch
So, that would be following. Except that it breaks desig{4,6}.C testcases, but
those try to implement what [over.ics.list]/2 says. So, it is unclear to me
what exactly is build_aggr_conv actually supposed to do. If the desig11.C
testcase is valid, then we can't just ignore the designators as we were doing
before, but on the other side if we must ignore the order, then would we need
to lookup up each field?
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Isn't that different though? I mean, even if we have int type and have [0,
> 1] range and have a check that the value isn't 0, then it must be 1.
Then I don't understand the problem in the BIT_NOT_EXPR case: we have int type
and [0, 1] range for rhs; if we know that BIT_NOT_EXPR is zero, we can deduce
than it must be 1 too.
>From gcc-bugs-return-635671-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 17:54:17 2019
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Then I don't understand the problem in the BIT_NOT_EXPR case: we have int
> type and [0, 1] range for rhs; if we know that BIT_NOT_EXPR is zero, we can
> deduce that it must be 1 too.
So the problem is in the non-zero case? Maybe add a test on integer_onep?
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #9)
> > Then I don't understand the problem in the BIT_NOT_EXPR case: we have int
> > type and [0, 1] range for rhs; if we know that BIT_NOT_EXPR is zero, we can
> > deduce that it must be 1 too.
>
> So the problem is in the non-zero case? Maybe add a test on integer_onep?
On the testcase, value is -2 and before your change it would derive correctly
that if BIT_NOT_EXPR is -2, then rhs must be ~-2, i.e. 1, but after the patch
it says rhs must be 0. Adding integer_onep wouldn't be correct IMHO, if you
have some non-boolean non-prec==1 integral type, even if you know rhs has range
[0, 1], if BIT_NOT_EXPR should be assumed to have value 0, then rhs needs to be
assumed to have value ~0, i.e. -1, rather than 1, and similarly if BIT_NOT_EXPR
has value 1, then rhs needs to be assumed to have value ~1, i.e. -2, rather
than 0. Due to actual value range that will turn to be something impossible,
but what the boolean-ish case does is just not correct for non-boolean.
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The [0, 1] range in that case (if not boolean or prec==1) is not the property
of the type, but just that optimizations figured out the SSA_NAME will not have
other values. In tree-ssa-dom.c it goes in the opposite direction, sees that
there is ~x == value comparison, and from that tries to derive what x could be
if that comparison is true.
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> On the testcase, value is -2 and before your change it would derive
> correctly that if BIT_NOT_EXPR is -2, then rhs must be ~-2, i.e. 1, but
> after the patch it says rhs must be 0.
Right, an annoying oversight, which would be cured by:
Index: tree-ssa-dom.c
===================================================================
--- tree-ssa-dom.c (revision 269211)
+++ tree-ssa-dom.c (working copy)
@@ -346,7 +346,8 @@ edge_info::derive_equivalences (tree nam
boolean types with precision > 1. */
if (code == BIT_NOT_EXPR
&& TREE_CODE (rhs) == SSA_NAME
- && ssa_name_has_boolean_range (rhs))
+ && ssa_name_has_boolean_range (rhs)
+ && (integer_zerop (value) || integer_onep (value)))
{
if (integer_zerop (value))
res = build_one_cst (TREE_TYPE (rhs));
> Adding integer_onep wouldn't be
> correct IMHO, if you have some non-boolean non-prec==1 integral type, even
> if you know rhs has range [0, 1], if BIT_NOT_EXPR should be assumed to have
> value 0, then rhs needs to be assumed to have value ~0, i.e. -1, rather than
> 1, and similarly if BIT_NOT_EXPR has value 1, then rhs needs to be assumed
> to have value ~1, i.e. -2, rather than 0. Due to actual value range that
> will turn to be something impossible, but what the boolean-ish case does is
> just not correct for non-boolean.
With this line of reasoning, how can the BIT_AND_EXPR case be correct?
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> On the testcase, value is -2 and before your change it would derive
> correctly that if BIT_NOT_EXPR is -2, then rhs must be ~-2, i.e. 1, but
> after the patch it says rhs must be 0.
The oversight is actually on the integer_zerop predicate itself so:
Index: tree-ssa-dom.c
===================================================================
--- tree-ssa-dom.c (revision 269211)
+++ tree-ssa-dom.c (working copy)
@@ -348,7 +348,7 @@ edge_info::derive_equivalences (tree nam
&& TREE_CODE (rhs) == SSA_NAME
&& ssa_name_has_boolean_range (rhs))
{
- if (integer_zerop (value))
+ if ((TREE_INT_CST_LOW (value) & 1) == 0)
res = build_one_cst (TREE_TYPE (rhs));
else
res = build_zero_cst (TREE_TYPE (rhs));
is the immediate fix.
On the other hand, if your line of reasoning is correct, then we must restrict
both the BIT_AND_EXPR and the BIT_NOT_EXPR cases to bona-fide boolean types.
>From gcc-bugs-return-635676-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 18:53:17 2019
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #12)
> > Adding integer_onep wouldn't be
> > correct IMHO, if you have some non-boolean non-prec==1 integral type, even
> > if you know rhs has range [0, 1], if BIT_NOT_EXPR should be assumed to have
> > value 0, then rhs needs to be assumed to have value ~0, i.e. -1, rather than
> > 1, and similarly if BIT_NOT_EXPR has value 1, then rhs needs to be assumed
> > to have value ~1, i.e. -2, rather than 0. Due to actual value range that
> > will turn to be something impossible, but what the boolean-ish case does is
> > just not correct for non-boolean.
>
> With this line of reasoning, how can the BIT_AND_EXPR case be correct?
So, for BIT_AND_EXPR we only handle the case where the result of BIT_AND_EXPR
is known to be non-zero. That means both operands have to be non-zero (and
have at least one common bit). Now, if say the operation is done on int and we
know
that rhs1 (or rhs2 or both) have [0, 1] range, that means we can safely assume
that BIT_AND_EXPR is non-zero implies that rhs1 (or rhs2 or both) are 1.
>From gcc-bugs-return-635677-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 19:01:58 2019
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
How is BIT_NOT_EXPR expanded for the prec > 1 BOOLEAN_TYPEs btw? If it is
normal QImode or SImode etc. one's complement, then I'd say it is a bug if
match.pd generates such BIT_NOT_EXPRs.
>From gcc-bugs-return-635678-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 19:09:04 2019
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #16 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> So, for BIT_AND_EXPR we only handle the case where the result of
> BIT_AND_EXPR is known to be non-zero. That means both operands have to be
> non-zero (and have at least one common bit). Now, if say the operation is
> done on int and we know that rhs1 (or rhs2 or both) have [0, 1] range, that
> means we can safely assume that BIT_AND_EXPR is non-zero implies that rhs1
> (or rhs2 or both) are 1.
But why would the [0, 1] range hold in the BIT_AND_EXPR case and not in the
BIT_NOT_EXPR case? Either we take the range as granted in both cases or in
none of them. If the former, then we can apply the exclusion game in the
BIT_NOT_EXPR case too.
>From gcc-bugs-return-635679-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 19:10:45 2019
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #17 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> How is BIT_NOT_EXPR expanded for the prec > 1 BOOLEAN_TYPEs btw? If it is
> normal QImode or SImode etc. one's complement, then I'd say it is a bug if
> match.pd generates such BIT_NOT_EXPRs.
No idea about the question, but I would agree with the conclusion.
>From gcc-bugs-return-635680-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 19:20:31 2019
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We do take the range as granted in both cases. If for BIT_NOT_EXPR on say int
the result is -2 or -1, then your TREE_INT_CST_LOW fix would DTRT, sure. If
the result is any other value, then we run into the impossible territory, if
previous optimizations did a good job, then likely that comparison should have
been folded away, but what if it appeared since the last pass that could have
optimized it away? By that I mean something like if we end up with following
before dom2:
a.0_1 = a;
_2 = a.0_1 != 0;
# RANGE [0, 1] NONZERO 1
_3 = (int) _2;
# RANGE [-2, -1]
_4 = ~_3;
# .MEM_8 = VDEF <.MEM_7(D)>
a = _4;
if (_4 == -5) // on the testcase from this pr it is -2 here
goto <bb 3>; [34.00%]
else
goto <bb 4>; [66.00%]
<bb 3> [local count: 365072220]:
# .MEM_9 = VDEF <.MEM_8>
a = _3;
Normally I'd say the _4 == -5 comparison would be optimized to 0 because _4 has
RANGE [-2, -1]. If for whatever reason it is not, then I think it is better to
keep status quo in the dominated code. I guess your TREE_INT_CST_LOW & 1 hunk
is probably still desirable for the Ada boolean case (or we fix match.pd and
drop this altogether at some point). As the patch has been applied to 8.3.1,
we have a serious regression and need a fix fast though.
>From gcc-bugs-return-635681-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 20:05:08 2019
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Subject: [Bug fortran/71544] gfortran compiler optimization bug when dealing with c-style pointers
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This looks like it does the trick (test case passes):
Index: trans-types.c
===================================================================
--- trans-types.c (Revision 269260)
+++ trans-types.c (Arbeitskopie)
@@ -1176,7 +1176,8 @@ gfc_typenode_for_spec (gfc_typespec * spec, int co
{
spec->type = BT_INTEGER;
spec->kind = gfc_index_integer_kind;
- spec->f90_type = BT_VOID;
+ spec->f90_type = BT_VOID;
+ spec->is_c_interop = 1; /* Mark as escaping later. */
}
break;
case BT_VOID:
@@ -2957,7 +2958,8 @@ create_fn_spec (gfc_symbol *sym, tree fntype)
|| f->sym->ts.u.derived->attr.pointer_comp))
|| (f->sym->ts.type == BT_CLASS
&& (CLASS_DATA (f->sym)->ts.u.derived->attr.proc_pointer_comp
- || CLASS_DATA (f->sym)->ts.u.derived->attr.pointer_comp)))
+ || CLASS_DATA (f->sym)->ts.u.derived->attr.pointer_comp))
+ || (f->sym->ts.type == BT_INTEGER && f->sym->ts.is_c_interop))
spec[spec_len++] = '.';
else if (f->sym->attr.intent == INTENT_IN)
spec[spec_len++] = 'r';
>From gcc-bugs-return-635683-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 20:31:41 2019
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Subject: [Bug c/89433] Repeated use of the OpenACC 'routine' directive
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--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Feb 28 20:31:01 2019
New Revision: 269285
URL: https://gcc.gnu.org/viewcvs?rev=269285&root=gcc&view=rev
Log:
[PR72741, PR89433] Accept intrinsic symbols in Fortran OpenACC 'routine'
directives
gcc/fortran/
PR fortran/72741
PR fortran/89433
* openmp.c (gfc_match_oacc_routine): Accept intrinsic symbols.
gcc/testsuite/
PR fortran/72741
PR fortran/89433
* gfortran.dg/goacc/routine-6.f90: Update
* gfortran.dg/goacc/routine-intrinsic-1.f: New file.
* gfortran.dg/goacc/routine-intrinsic-2.f: Likewise.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-intrinsic-1.f
trunk/gcc/testsuite/gfortran.dg/goacc/routine-intrinsic-2.f
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/routine-6.f90
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
--- Comment #9 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Feb 28 20:31:01 2019
New Revision: 269285
URL: https://gcc.gnu.org/viewcvs?rev=269285&root=gcc&view=rev
Log:
[PR72741, PR89433] Accept intrinsic symbols in Fortran OpenACC 'routine'
directives
gcc/fortran/
PR fortran/72741
PR fortran/89433
* openmp.c (gfc_match_oacc_routine): Accept intrinsic symbols.
gcc/testsuite/
PR fortran/72741
PR fortran/89433
* gfortran.dg/goacc/routine-6.f90: Update
* gfortran.dg/goacc/routine-intrinsic-1.f: New file.
* gfortran.dg/goacc/routine-intrinsic-2.f: Likewise.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-intrinsic-1.f
trunk/gcc/testsuite/gfortran.dg/goacc/routine-intrinsic-2.f
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/routine-6.f90
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Subject: [Bug c/89433] Repeated use of the OpenACC 'routine' directive
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89433
--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Feb 28 20:31:36 2019
New Revision: 269287
URL: https://gcc.gnu.org/viewcvs?rev=269287&root=gcc&view=rev
Log:
[PR72741, PR89433] Repeated use of the Fortran OpenACC 'routine' directive
gcc/fortran/
PR fortran/72741
PR fortran/89433
* openmp.c (gfc_match_oacc_routine): Handle repeated use of the
Fortran OpenACC 'routine' directive.
gcc/testsuite/
PR fortran/72741
PR fortran/89433
* gfortran.dg/goacc/routine-multiple-directives-1.f90: New file.
* gfortran.dg/goacc/routine-multiple-directives-2.f90: Likewise.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-multiple-directives-1.f90
trunk/gcc/testsuite/gfortran.dg/goacc/routine-multiple-directives-2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
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--- Comment #11 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Feb 28 20:31:36 2019
New Revision: 269287
URL: https://gcc.gnu.org/viewcvs?rev=269287&root=gcc&view=rev
Log:
[PR72741, PR89433] Repeated use of the Fortran OpenACC 'routine' directive
gcc/fortran/
PR fortran/72741
PR fortran/89433
* openmp.c (gfc_match_oacc_routine): Handle repeated use of the
Fortran OpenACC 'routine' directive.
gcc/testsuite/
PR fortran/72741
PR fortran/89433
* gfortran.dg/goacc/routine-multiple-directives-1.f90: New file.
* gfortran.dg/goacc/routine-multiple-directives-2.f90: Likewise.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-multiple-directives-1.f90
trunk/gcc/testsuite/gfortran.dg/goacc/routine-multiple-directives-2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
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--- Comment #10 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Feb 28 20:31:23 2019
New Revision: 269286
URL: https://gcc.gnu.org/viewcvs?rev=269286&root=gcc&view=rev
Log:
[PR72741] For all Fortran OpenACC 'routine' directive variants check for
multiple clauses specifying the level of parallelism
gcc/fortran/
PR fortran/72741
* gfortran.h (enum oacc_routine_lop): Add OACC_ROUTINE_LOP_ERROR.
* openmp.c (gfc_oacc_routine_lop, gfc_match_oacc_routine): Use it.
* trans-decl.c (add_attributes_to_decl): Likewise.
gcc/testsuite/
PR fortran/72741
* gfortran.dg/goacc/routine-multiple-lop-clauses-1.f90: New file.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-multiple-lop-clauses-1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/openmp.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89538] [7.3.0] GCC miscompiling LLVM because of wrong vectorization
Date: Thu, 28 Feb 2019 20:43:00 -0000
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--- Comment #1 from Taewook Oh <twoh at fb dot com> ---
And I confirmed that this bug doesn't reproduce with GCC5.
>From gcc-bugs-return-635687-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 20:43:13 2019
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Subject: [Bug c++/89538] New: [7.3.0] GCC miscompiling LLVM because of wrong vectorization
Date: Thu, 28 Feb 2019 20:43:00 -0000
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Bug ID: 89538
Summary: [7.3.0] GCC miscompiling LLVM because of wrong
vectorization
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I compiled pretty recent version of LLVM (https://reviews.llvm.org/rL354365)
with GCC 7.3.0, and experiencing segfault from LLVM when I compile. I did some
investigation and seems that GCC generates wrong binary because of the issue in
vectorization.
This
(https://github.com/llvm-mirror/llvm/blob/master/lib/CodeGen/AsmPrinter/DwarfDebug.cpp#L2650)
is the line causes the problem. The data structure (SmallVector) holds a pair
of a unique_ptr and a raw pointer, and when emplace_back attempt to push a 9th
element to the vector, it releases all the unique_ptrs that previously in the
vector. I added an instrumentation around emplace_back, and below is the output
TypeUnitsUnderConstruction size before: 8
check1 0x67ecea0 0x6b09908
check1 0x67eccb0 0x5eefa48
check1 0x67ecac0 0x61a3b58
check1 0x67ec8d0 0x6b1ab28
check1 0x67ec6e0 0x61a3ca8
check1 0x67ec110 0x6b0c0b8
check1 0x65fd1a0 0x6b0bfb8
check1 0x65fcfb0 0x66cc0d8
emplace_back 0x65fcdc0 0x7a7a958
TypeUnitsUnderConstruction size after: 9
check2 0x0 0x6b09908
check2 0x0 0x5eefa48
check2 0x0 0x61a3b58
check2 0x0 0x6b1ab28
check2 0x0 0x61a3ca8
check2 0x0 0x6b0c0b8
check2 0x0 0x6b0bfb8
check2 0x0 0x66cc0d8
check2 0x65fcdc0 0x7a7a958
You can easily guess that something might go wrong when emplace_back triggers a
logic that increases the capacity of the vector and moves the elements from the
old location to the new location. That is actually right, and I confirmed that
here in the function that increases the capacity
(https://github.com/llvm-mirror/llvm/blob/master/include/llvm/ADT/SmallVector.h#L243),
"unitilized_move" only resets the the old object but not moves the elements to
the new object.
So I investigated further to figure out which instruction actually sets "0x0"
to the new location, and found that instruction 202aef4 below is the one
202aed0: 48 c7 00 00 00 00 00 movq $0x0,(%rax)
202aed7: f3 0f 6f 08 movdqu (%rax),%xmm1
202aedb: 48 83 c0 20 add $0x20,%rax
202aedf: 48 83 c1 20 add $0x20,%rcx
202aee3: 48 c7 40 f0 00 00 00 movq $0x0,-0x10(%rax)
202aeea: 00
202aeeb: f3 0f 6f 40 f0 movdqu -0x10(%rax),%xmm0
202aef0: 0f 11 49 e0 movups %xmm1,-0x20(%rcx)
202aef4: 0f 11 41 f0 movups %xmm0,-0x10(%rcx)
202aef8: 48 39 f8 cmp %rdi,%rax
202aefb: 75 d3 jne 202aed0
However, here, %xmm0 is always expected to be 0 because of instruction 202aee3
and 202aeeb (there's no branch targeting instructions after 202aeeb). I found
this weird, and recompiled the problematic LLVM source (DwarfDebug.cpp) again
with all IR dumps
(https://gist.github.com/taewookoh/45e710594497b887e2ac54168c86c17f is my
compilation command). Then I bisected IRs to find out where these suspicious
logic introduced. And it seems to me that vectorizer is the issue.
https://gist.github.com/taewookoh/3bbe848ee487473f8012028bc78da64a is the code
snippet from DwarfDebug.cpp.160t.ifcvt while
https://gist.github.com/taewookoh/766d1bf3198ac33465fad6d875110f3e is from
DwarfDebug.cpp.161t.vect. From 160t, we can see the logic of reading a value
from the old location, reset the old location, then write the value back to the
new location
(https://gist.github.com/taewookoh/3bbe848ee487473f8012028bc78da64a#file-gistfile1-txt-L225-L284).
However, in one specialization in 161t, the logic seems twisted
(https://gist.github.com/taewookoh/3bbe848ee487473f8012028bc78da64a#file-gistfile1-txt-L225-L284).
Here, both __first$_M_current_84 and vectp.5429_127 are the index for the
original object, while vectp_Result.5433_132 is an index for the new object.
line 378-384 performs the operation of reading the value from the old object
and writing them back to the new object, but for some reason, the old location
is already reset to 0 from line 320-324. And this aligns with what I observe
from the asm instructions above: reset the memory to zero first, read from the
memory, then write to another memory.
As I'm not a gcc expert I still not 100% confident to claim this as a gcc bug
(and hard to believe that this bug hasn't been exposed), but what's happening
here is suspicious enough to me. It would be nice if someone familiar with the
code base can take a look. Thanks!
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Subject: [Bug fortran/68544] ICE trying to pass derived type constructor as a function
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--- Comment #9 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to kargl from comment #8)
> Index: gcc/fortran/resolve.c
> ===================================================================
> --- gcc/fortran/resolve.c (revision 266281)
> +++ gcc/fortran/resolve.c (working copy)
> @@ -1863,7 +1863,19 @@ resolve_procedure_expression (gfc_expr* expr)
Steve,
what is the status of your patch?
>From gcc-bugs-return-635690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 21:00:56 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89537] missing location for error
Date: Thu, 28 Feb 2019 21:00:00 -0000
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #5)
> 89537.C:9:18: error: invalid use of non-static member function ‘void B<
> <template-parameter-1-1>, <template-parameter-1-2>,
> <template-parameter-1-3>, <template-parameter-1-4> >::keys() [with _Tp =
> int; <template-parameter-1-2> = int; <template-parameter-1-3> = A<int>;
> <template-parameter-1-4> = A<int>]’
> 9 | : keys(p1->keys), values(p1->values) {}
> | ~~~~^~~~
> 89537.C:28:8: note: declared here
> 28 | void keys();
> | ^~~~
Much better!
>From gcc-bugs-return-635691-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 21:01:43 2019
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Subject: [Bug fortran/77604] ICE in get_frame_type, at tree-nested.c:208
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Harald Anlauf <anlauf at gmx dot de> changed:
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
Does this still fail? I cannot reproduce with current trunk or 8-branch.
>From gcc-bugs-return-635692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 21:09:35 2019
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Subject: [Bug fortran/87751] ICE in gfc_trans_assignment_1, at fortran/trans-expr.c:10255
Date: Thu, 28 Feb 2019 21:09:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
Known to fail| |7.3.1, 8.2.1
--- Comment #3 from anlauf at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #2)
> Changed in gcc-9 between 20181111 (ICE) and 20181118 (ok=error),
> presumably due to pr70260.
>
>
> $ gfortran-9-20181125 -c z1.f90
> z1.f90:8:3:
>
> 8 | g = 1
> | 1
> Error: Illegal assignment to external procedure at (1)
So resolved on trunk?
>From gcc-bugs-return-635693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 21:21:50 2019
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Subject: [Bug fortran/60576] [7/8/9 Regression] FAIL: gfortran.dg/assumed_rank_7.f90
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--- Comment #28 from anlauf at gcc dot gnu.org ---
Is this still an issue?
On x86_64-pc-linux-gnu and with current trunk, I do only get a memory
leak with -fsanitize=address (both -m32 and -m64), which disappears
if I deallocate the arrays at the end.
>From gcc-bugs-return-635694-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 21:44:40 2019
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Subject: [Bug fortran/68544] ICE trying to pass derived type constructor as a function
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kargl at gcc dot gnu.org changed:
What |Removed |Added
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CC| |kargl at gcc dot gnu.org
--- Comment #10 from kargl at gcc dot gnu.org ---
(In reply to Harald Anlauf from comment #9)
> (In reply to kargl from comment #8)
> > Index: gcc/fortran/resolve.c
> > ===================================================================
> > --- gcc/fortran/resolve.c (revision 266281)
> > +++ gcc/fortran/resolve.c (working copy)
> > @@ -1863,7 +1863,19 @@ resolve_procedure_expression (gfc_expr* expr)
>
> Steve,
>
> what is the status of your patch?
It no longer applies and works. Someone (pault?)
removed the list of derived types (gfc_derived_types),
so the patch needs to be reworked to walk the list
of symbols to see if the actual argument is a
derived type or not. I haven't pursued doing that
>From gcc-bugs-return-635695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 22:02:51 2019
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Subject: [Bug fortran/84868] [7/8/9 Regression] ICE in gfc_conv_descriptor_offset, at fortran/trans-array.c:208
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anlauf at gcc dot gnu.org changed:
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--- Comment #3 from anlauf at gcc dot gnu.org ---
Works also if len_trim is replaced by len.
I wonder if this is related to PR86249.
>From gcc-bugs-return-635696-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 22:20:43 2019
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Subject: [Bug fortran/60576] [7/8/9 Regression] FAIL: gfortran.dg/assumed_rank_7.f90
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--- Comment #29 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Is this still an issue?
I still get the stack-buffer-overflow reported in comment 26 with 8.2 and trunk
(9.0) but not with 7.4.
>From gcc-bugs-return-635697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 22:30:51 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/87068] No diagnostic on an ill-formed [[fallthrough]]
Date: Thu, 28 Feb 2019 22:30:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Feb 28 22:29:42 2019
New Revision: 269288
URL: https://gcc.gnu.org/viewcvs?rev=269288&root=gcc&view=rev
Log:
PR c++/87068 - missing diagnostic with fallthrough statement.
* gimplify.c (expand_FALLTHROUGH_r): If IFN_FALLTHROUGH was found
at the end of a seq, save its location to walk_stmt_info.
(expand_FALLTHROUGH): Warn if IFN_FALLTHROUGH is at the end of
a switch.
* c-c++-common/Wimplicit-fallthrough-37.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/Wimplicit-fallthrough-37.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635698-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 28 22:31:12 2019
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Subject: [Bug c++/87068] No diagnostic on an ill-formed [[fallthrough]]
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for GCC 9.
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89536
--- Comment #19 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> We do take the range as granted in both cases. If for BIT_NOT_EXPR on say
> int the result is -2 or -1, then your TREE_INT_CST_LOW fix would DTRT, sure.
> If the result is any other value, then we run into the impossible territory,
> if previous optimizations did a good job, then likely that comparison should
> have been folded away, but what if it appeared since the last pass that
> could have optimized it away?
So this is about potential pessimization instead of correctness here?
> Normally I'd say the _4 == -5 comparison would be optimized to 0 because _4
> has RANGE [-2, -1]. If for whatever reason it is not, then I think it is
> better to keep status quo in the dominated code.
Why? The default code would compute a totally bogus value.
> I guess your TREE_INT_CST_LOW & 1 hunk is probably still desirable for the Ada
> boolean case (or we fix match.pd and drop this altogether at some point). As
> the patch has been applied to 8.3.1, we have a serious regression and need a fix
> fast though.
OK, I'm going to apply the (TREE_INT_CST_LOW & 1) fixlet as it is obviously
more correct than the current code. Then we can keep arguing for a while. :-)
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Subject: [Bug fortran/77604] ICE in get_frame_type, at tree-nested.c:208
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Does this still fail? I cannot reproduce with current trunk or 8-branch.
The PR seems to be fixed on 7.4.1, 8.3.1 and trunk (9.0).
My archives point to r267379, but I don't understand why.
Also I don't see why this is ice-on-invalid-code.
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Subject: [Bug c/89539] New: [9.0 regression] gcc fails to build/bootstrap on MACOSX
Date: Thu, 28 Feb 2019 23:02:00 -0000
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Bug ID: 89539
Summary: [9.0 regression] gcc fails to build/bootstrap on
MACOSX
Product: gcc
Version: 9.0
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gcc fails to compile/bootstrap on MAC OS X Darwin 10.14.3, 64bit,
Darwin Finarfin.local 18.2.0 Darwin Kernel Version 18.2.0: Thu Dec 20 20:46:53
PST 2018; root:xnu-4903.241.1~1/RELEASE_X86_64 x86_64 i386 MacBookPro11,5
Darwin
Seems to be a very recent commit, r269230 was still working, r269284 is
failing.
My configure line was ../configure --prefix=/usr/local/ --with-gmp=/usr/local/
--with-mpfr=/usr/local/ --with-mpc=/usr/local/ --enable-checking=release
--enable-languages=c,c++,fortran,lto
The compiler is being built with
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr
--with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 10.0.0 (clang-1000.11.45.5)
Target: x86_64-apple-darwin18.2.0
Thread model: posix
InstalledDir:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
Do you need more information?
/usr/local/packages/gcc_9.0/_build/./prev-gcc/xg++
-B/usr/local/packages/gcc_9.0/_build/./prev-gcc/
-B/usr/local/x86_64-apple-darwin18.2.0/bin/ -nostdinc++
-B/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/src/.libs
-B/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/libsupc++/.libs
-I/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/include/x86_64-apple-darwin18.2.0
-I/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/include
-I/usr/local/packages/gcc_9.0/libstdc++-v3/libsupc++
-L/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/src/.libs
-L/usr/local/packages/gcc_9.0/_build/prev-x86_64-apple-darwin18.2.0/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-DHAVE_CONFIG_H -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/../include
-I./../intl -I../../gcc/../libcpp/include -I/usr/local//include
-I/usr/local//include -I/usr/local//include -I../../gcc/../libdecnumber
-I../../gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/../libbacktrace
-o dwarf2out.o -MT dwarf2out.o -MMD -MP -MF ./.deps/dwarf2out.TPo
../../gcc/dwarf2out.c
../../gcc/dwarf2out.c: In function 'void
output_comdat_type_unit(comdat_type_node*, bool)':
../../gcc/dwarf2out.c:11237:55: error: unused parameter 'early_lto_debug'
[-Werror=unused-parameter]
11237 | output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug)
| ~~~~~^~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[3]: *** [dwarf2out.o] Error 1
make[2]: *** [all-stage2-gcc] Error 2
make[1]: *** [stage2-bubble] Error 2
make: *** [all] Error 2
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #20 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Feb 28 23:03:01 2019
New Revision: 269289
URL: https://gcc.gnu.org/viewcvs?rev=269289&root=gcc&view=rev
Log:
PR tree-optimization/89536
* tree-ssa-dom.c (edge_info::derive_equivalences) <BIT_NOT_EXPR>: Test
only whether bit #0 of the value is 0 instead of the entire value.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/20190228-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-dom.c
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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--- Comment #21 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Feb 28 23:06:15 2019
New Revision: 269290
URL: https://gcc.gnu.org/viewcvs?rev=269290&root=gcc&view=rev
Log:
PR tree-optimization/89536
* tree-ssa-dom.c (edge_info::derive_equivalences) <BIT_NOT_EXPR>: Test
only whether bit #0 of the value is 0 instead of the entire value.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/20190228-1.c
- copied unchanged from r269289,
trunk/gcc/testsuite/gcc.c-torture/execute/20190228-1.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-dom.c
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-28
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I have used the following patch
--- ../_clean/gcc/dwarf2out.c 2019-02-27 15:29:19.000000000 +0100
+++ gcc/dwarf2out.c 2019-02-28 01:44:53.000000000 +0100
@@ -11234,7 +11234,7 @@ output_skeleton_debug_sections (dw_die_r
/* Output a comdat type unit DIE and its children. */
static void
-output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug)
+output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug
__attribute((unused)))
{
const char *secname;
char *tmp;
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89534
--- Comment #1 from jon_y <10walls at gmail dot com> ---
Weak symbols aren't quite supported with PE, I'm not sure if making the symbol
weak is the right approach.
Do you have a test case to show this will lead to the correct behavior with
MAKE_DECL_ONE_ONLY?
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Subject: [Bug target/41055] libgcc functions and -mregparm don't work well together
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H. Peter Anvin <hpa at zytor dot com> changed:
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CC| |hpa at zytor dot com
--- Comment #5 from H. Peter Anvin <hpa at zytor dot com> ---
Created attachment 45858
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45858&action=edit
Test case (C)
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
Date: Fri, 01 Mar 2019 00:02:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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From: "andres_takach at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libquadmath/89540] New: roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 00:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89540
Bug ID: 89540
Summary: roundq(x) returning value with non-zero fractional
part
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libquadmath
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Created attachment 45859
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45859&action=edit
Test: c++ round_bug.cxx -lquadmath
roundq should return an integer value (no fractional part), but it returns
values with fractional part. The incorrect behavior seems to occur when values
are big enough ( 2^31).
The testcase has x = 2^31 + 0.5. In this case roundq(x) returns x, instead of
2^31 + 1.
To exercise:
c++ round_bug.cxx -lquadmath
The output is (x, and roundq(x) are printed in both raw hex and decimal):
401e0000000100000000000000000000
2147483648.50000000000000000000000000000000000000000000000000
roundq(x) returns a value with fractional part
401e0000000100000000000000000000
2147483648.50000000000000000000000000000000000000000000000000
Incorrect behavior has also been confirmed with 6.2.0 and 4.9.2.
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--- Comment #6 from H. Peter Anvin <hpa at zytor dot com> ---
Created attachment 45860
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Test case (preprocessed)
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Subject: [Bug target/41055] libgcc functions and -mregparm don't work well together
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--- Comment #7 from H. Peter Anvin <hpa at zytor dot com> ---
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Test case (assembly output)
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Subject: [Bug target/41055] libgcc functions and -mregparm don't work well together
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--- Comment #8 from H. Peter Anvin <hpa at zytor dot com> ---
Created attachment 45862
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Test code (object output)
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86969] [8/9 Regression] ICE (in tsubst_copy) for a generic recursive lambda
Date: Fri, 01 Mar 2019 00:08:00 -0000
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Mar 1 00:08:21 2019
New Revision: 269292
URL: https://gcc.gnu.org/viewcvs?rev=269292&root=gcc&view=rev
Log:
PR c++/86969 - ICE with constexpr if and recursive generic lambdas.
* class.c, lambda.c, pt.c: Revert earlier change.
* lambda.c (add_capture): Don't special-case capture of dependent
VLA.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/cp/lambda.c
trunk/gcc/cp/pt.c
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Subject: [Bug c++/88183] [8/9 Regression] Fold expression with operator .* inside an polymorphic lambda
Date: Fri, 01 Mar 2019 00:09:00 -0000
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Mar 1 00:08:58 2019
New Revision: 269293
URL: https://gcc.gnu.org/viewcvs?rev=269293&root=gcc&view=rev
Log:
PR c++/88183 - ICE with .* fold-expression.
build_m_component_ref can't handle type-dependent operands, so let's use the
default case; tsubst_copy_and_build also uses build_x_binary_op for
substituting a DOTSTAR_EXPR.
* pt.c (fold_expression) [DOTSTAR_EXPR]: Remove special handling.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug target/41055] libgcc functions and -mregparm don't work well together
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--- Comment #9 from H. Peter Anvin <hpa at zytor dot com> ---
I can confirm this bug is still present as of gcc 8.2.1.
I have attached a test case which clearly shows __udivdi3 called with the
regparm convention, but libgcc definitely does not expect it:
objdump -dr `gcc -m32 -march=i386 -mregparm=3 -O3 -fomit-frame-pointer
--print-libgcc`
00000000 <__udivdi3>:
0: f3 0f 1e fb endbr32
4: 55 push %ebp
5: 57 push %edi
6: 56 push %esi
7: 53 push %ebx
8: 83 ec 1c sub $0x1c,%esp
b: 8b 54 24 3c mov 0x3c(%esp),%edx
f: 8b 6c 24 30 mov 0x30(%esp),%ebp
13: 8b 74 24 34 mov 0x34(%esp),%esi
17: 8b 5c 24 38 mov 0x38(%esp),%ebx
...
As far as I can tell, there are four possible options:
a. Build a libgcc for any combination of runtime options.
b. Add multiple functions to libgcc for each combination of runtime options
which matter.
c. Force using a single ABI for libgcc functions (in which case it might as
well use the most efficient ABI, e.g. -mregparm=3 -freg-struct-return); as the
libgcc functions are private to gcc anyway there is no reason they need to use
the main calling convention.
d. Emit these functions in a link-once section, similar to the way
__x86.get_pc_thunk.* are generated. This has upsides and downsides: the upsides
are that they are inherently correct, that they can rely on arch/optimize
flags, a dynamic library can't get out of sync with the compiler if these
functions are changed, and these functions can be marked hidden, which means
that they can be called directly. Downsides are link time and some heavy
lifting in implementation.
It also means that each dynamic library carries its own copy, but since libgcc
already marks its symbols HIDDEN, this is already the case.
>From gcc-bugs-return-635715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 00:19:21 2019
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libquadmath/89540] roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 00:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89540
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Are you sure you're using (at runtime) the libquadmath from the GCC
version you're using (via -rpath / LD_LIBRARY_PATH, or linking with static
rather than shared libquadmath), rather than an older shared library from
your distribution? This looks very much like bug 65757, which was fixed
some time ago (for GCC 8 and backported to older release branches).
>From gcc-bugs-return-635716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 00:27:17 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89526] Diagnose errors in asserts
Date: Fri, 01 Mar 2019 00:27:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |msebor at gcc dot gnu.org
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
When NDEBUG is not defined GCC will certainly detect errors in assert
expressions. But it's clear from the test case you meant warnings. I'm not
sure I see what warning GCC could issue for assert("nullptr") or what it could
do to even help here. The assert macro is implemented in the C library, so GCC
has little control over what it expands to. Whatever it does expand to, GCC
does the same checking as in other code. So for instance:
$ cat t.c && gcc -O2 -S -Wall -Wextra t.c
#include <assert.h>
void f (unsigned i)
{
assert (i >= 0);
}
In file included from t.c:1:
t.c: In function ‘f’:
t.c:5:13: warning: comparison of unsigned expression >= 0 is always true
[-Wtype-limits]
5 | assert (i >= 0);
| ^~
t.c:5:13: warning: comparison of unsigned expression >= 0 is always true
[-Wtype-limits]
5 | assert (i >= 0);
| ^~
Note the warning is duplicated because in Glibc's definition of assert the
expression appears twice. That's on purpose but it has the unfortunate effect
when the warning isn't controlled by -Wpedantic.
/* The first occurrence of EXPR is not evaluated due to the sizeof,
but will trigger any pedantic warnings masked by the __extension__
for the second occurrence. The ternary operator is required to
support function pointers and bit fields in this context, and to
suppress the evaluation of variable length arrays. */
# define assert(expr) \
((void) sizeof ((expr) ? 1 : 0), __extension__ ({ \
if (expr) \
; /* empty */ \
else \
__assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION); \
}))
With that I have to resolve this as won't fix.
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Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
Date: Fri, 01 Mar 2019 00:27:00 -0000
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--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
In fact, having tested it, and used static linking to make sure the new
libquadmath was used rather than an older distribution version, this bug
was fixed in GCC 8, presumably by the r250343 merge of changes from glibc.
>From gcc-bugs-return-635718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 00:55:40 2019
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From: "andres_takach at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libquadmath/89540] roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 00:55:00 -0000
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--- Comment #2 from Andres Takach <andres_takach at mentor dot com> ---
You are right. I did use LD_LIBRARY_PATH, but the issue I had is that I used
the "lib" instead of the "lib64" version (I did not build 32-bit compatability)
so I was picking up the wrong version since "lib" was empty.
>From gcc-bugs-return-635719-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 01:40:04 2019
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Subject: [Bug target/88100] no warning reported when value for vec_splat_{su}{8,16} would overflow
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Li Jia He <helijia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Li Jia He <helijia at gcc dot gnu.org> ---
It has been patched on the trunk and gcc 8, so modify this issue to a fixed
state.
>From gcc-bugs-return-635720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 03:04:30 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89541] New: [9 Regression] ICE in VN_INFO(tree_node*)
Date: Fri, 01 Mar 2019 03:04:00 -0000
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Bug ID: 89541
Summary: [9 Regression] ICE in VN_INFO(tree_node*)
Product: gcc
Version: 9.0
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Keywords: ice-on-valid-code
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Target Milestone: ---
gfortran-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling the
following testcase w/ -O2 (-O3, -Ofast, -Os) -fno-early-inlining -fno-tree-dce
-fno-tree-pta:
program lh
call za(0)
call za(0)
contains
subroutine za(wl)
integer wl
wl = 1
end subroutine za
end program lh
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190224 -O2 -fno-early-inlining
-fno-tree-dce -fno-tree-pta -c awq4hkbw.f90
during GIMPLE pass: pre
awq4hkbw.f90:3:0:
3 | call za(0)
|
internal compiler error: Segmentation fault
0xda0546 crash_signal
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/toplev.c:326
0xf5fd58 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree.h:3175
0xf5fd58 VN_INFO(tree_node*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:378
0xf68e3d visit_reference_op_store
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:4166
0xf68e3d visit_stmt
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:4466
0xf6a504 process_bb
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:6058
0xf6c348 do_rpo_vn
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:6553
0xf6ce69 run_rpo_vn(vn_lookup_kind)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-sccvn.c:5629
0xf3c9b3 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/tree-ssa-pre.c:4194
(While my target here is powerpc, the ICE is not target-specific.)
>From gcc-bugs-return-635721-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 03:12:33 2019
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Subject: [Bug fortran/89531] Possible memory corruption in the gfortran front-end
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--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> ---
In my case the target is 32-bit BE powerpc.
Additionally, the testcase fails w/ -fno-PIC and/or ( -fstack-protector-all or
-fno-stack-protector ); it does not fail w/ -fPIC and/or
-fstack-protector{,-explicit,-strong}.
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190224 -v
Using built-in specs.
COLLECT_GCC=powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190224
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/lto-wrapper
Target: powerpc-e300c3-linux-gnu
Configured with:
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/configure
--host=x86_64-pc-linux-gnu --target=powerpc-e300c3-linux-gnu
--build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/powerpc-e300c3-linux-gnu/gcc-bin/9.0.0-alpha20190224
--includedir=/usr/lib/gcc/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/include
--datadir=/usr/share/gcc-data/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224
--mandir=/usr/share/gcc-data/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/man
--infodir=/usr/share/gcc-data/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/info
--with-gxx-include-dir=/usr/lib/gcc/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/include/g++-v9
--with-python-dir=/share/gcc-data/powerpc-e300c3-linux-gnu/9.0.0-alpha20190224/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --disable-nls --enable-checking=yes
--disable-esp --enable-libstdcxx-time --enable-poison-system-directories
--with-sysroot=/usr/powerpc-e300c3-linux-gnu --disable-bootstrap
--enable-__cxa_atexit --enable-clocale=gnu --disable-multilib --disable-altivec
--disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--disable-vtable-verify --disable-libvtv --enable-lto --with-isl
--disable-isl-version-check --disable-libsanitizer
Thread model: posix
gcc version 9.0.0-alpha20190224 20190224 (experimental) (GCC)
>From gcc-bugs-return-635722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 03:54:24 2019
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Subject: [Bug preprocessor/89542] New: Error reported on incorrect line number when using GCC to compile .S files using #include
Date: Fri, 01 Mar 2019 03:54:00 -0000
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Bug ID: 89542
Summary: Error reported on incorrect line number when using GCC
to compile .S files using #include
Product: gcc
Version: 4.2.1
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Hi!
I am coding a bootloader for my own operating system, and the way I am
compiling the bootloader seems to be something tricky to GAS because it reports
a line far away from the original... I am using comments with # instead of //
or /**/ because it works and I prefer (maybe this is the problem).
The URL of the project is
https://github.com/hombrelogico/MyOwnOperatingSystem/tree/master/bootloader
Please, clone and run make to see more deeply if you need, but basically I am
on OpenBSD, the GCC version is specified before, and it says that asm
instruction on line XX is wrong, but on that line there's not for example a
`mov' instruction, as it reports...
Sorry because I can't expose better my error, I've read the bug reporting
rules, but can't report better...
I know I am using GCC to compile what I would be able with GAS, but as I need
to build a self-relocated binary, I prefer to pass by the CPP to remove
comments and build a big one file.
But seems that, it is generated bad after the CPP and/or when passed to GAS...
Thanks in advance, have a nice day.
>From gcc-bugs-return-635723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 04:05:20 2019
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Subject: [Bug preprocessor/89542] Error reported on incorrect line number when using GCC to compile .S files using #include
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Are you sure this is not an binutils bug at reporting the wrong line numbers
based on the preprocessed output?
>From gcc-bugs-return-635724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 04:19:19 2019
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Subject: [Bug preprocessor/89542] Error reported on incorrect line number when using GCC to compile .S files using #include
Date: Fri, 01 Mar 2019 04:19:00 -0000
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--- Comment #2 from puffydaemon at gmail dot com ---
(In reply to Andrew Pinski from comment #1)
> Are you sure this is not an binutils bug at reporting the wrong line numbers
> based on the preprocessed output?
No, I am not sure. Even I dont understand you well when speaking about
binutils... how can I check it?
>From gcc-bugs-return-635725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 06:14:39 2019
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Subject: [Bug middle-end/83239] False positive from -Wstringop-overflow on simple std::vector code
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Xi Ruoyao <xry111 at mengyan1223 dot wang> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xry111 at mengyan1223 dot wang
--- Comment #26 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
It seems this issue comes back in 8.3.0.
>From gcc-bugs-return-635726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 06:22:21 2019
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Fri, 01 Mar 2019 06:22:00 -0000
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--- Comment #9 from David <gccbugzilla at limegreensocks dot com> ---
(In reply to Ciro Santilli from comment #8)
- I haven't posted a patch file since I wasn't sure that I was all that close
to being done. But I'm certainly not opposed to the idea. Were you
volunteering to move this forward?
- "document the aarch32 modifiers" It's been discussed, but since I'm already
unable to move aarch64 forward...
- As I've mentioned, I'm not enough of an ARM expert to explain why things are
they way they are. It's possible that the reason there are "both 't' and 'w'"
has to do with history. Additionally, remember that machine constraints aren't
just for inline asm. They are used in the MD files as well where the
differences may have more meaning.
>From gcc-bugs-return-635727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 06:26:56 2019
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Subject: [Bug middle-end/83239] False positive from -Wstringop-overflow on simple std::vector code
Date: Fri, 01 Mar 2019 06:26:00 -0000
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--- Comment #27 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
I confirm it is back in 8.3.0.
See https://gcc.godbolt.org/z/QoSa3W.
>From gcc-bugs-return-635728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 07:08:54 2019
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Subject: [Bug other/89395] libiberty: heap buffer overflow in nm
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--- Comment #3 from spinpx <spinpx at gmail dot com> ---
CVE-2019-9070
>From gcc-bugs-return-635729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 07:10:05 2019
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Subject: [Bug other/89394] libiberty :stack overflow in nm
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--- Comment #3 from spinpx <spinpx at gmail dot com> ---
CVE-2019-9071
>From gcc-bugs-return-635730-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:05:27 2019
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Subject: [Bug c/89539] [9 Regression] gcc fails to build/bootstrap on MACOSX
Date: Fri, 01 Mar 2019 08:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89539
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|[9.0 regression] gcc fails |[9 Regression] gcc fails to
|to build/bootstrap on |build/bootstrap on MACOSX
|MACOSX |
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That should be:
--- gcc/dwarf2out.c.jj 2019-02-27 15:49:28.567392391 +0100
+++ gcc/dwarf2out.c 2019-03-01 09:04:15.440751912 +0100
@@ -11234,7 +11234,8 @@ output_skeleton_debug_sections (dw_die_r
/* Output a comdat type unit DIE and its children. */
static void
-output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug)
+output_comdat_type_unit (comdat_type_node *node,
+ bool early_lto_debug ATTRIBUTE_UNUSED)
{
const char *secname;
char *tmp;
then, let me commit it as obvious.
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Subject: [Bug bootstrap/89539] [9 Regression] gcc fails to build/bootstrap on MACOSX
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 1 08:10:19 2019
New Revision: 269301
URL: https://gcc.gnu.org/viewcvs?rev=269301&root=gcc&view=rev
Log:
PR bootstrap/89539
* dwarf2out.c (output_comdat_type_unit): Add ATTRIBUTE_UNUSED to
early_lto_debug argument.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-01
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r263875.
>From gcc-bugs-return-635733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:30:20 2019
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Subject: [Bug bootstrap/89539] [9 Regression] gcc fails to build/bootstrap on MACOSX
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Hopefully fixed.
>From gcc-bugs-return-635734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:31:27 2019
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Subject: [Bug tree-optimization/89536] [8/9 Regression] wrong code at -Os and above on x86_64-linux-gnu
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The regression part of this is now fixed.
>From gcc-bugs-return-635735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:36:10 2019
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
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--- Comment #71 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Frank Ch. Eigler from comment #70)
> > We could add a NATIVE_ENCODE_RANGE_EXPR that encodes a contiguous range of
> > bytes in native target representation. Of course that has to be kept
> > throughout GIMPLE.
>
> (Just a silly spitballing here ... but if such a native target
> representation is
> not processed again before being sent to the assembler, it could even be
> stored compressed.)
One step at a time - but sure. Note that we _do_ inspect the data for
constant folding so whether to compress needs to be evaluated on a case-by-case
basis (only initializers to non-constant objects for example?)
>From gcc-bugs-return-635736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:49:04 2019
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Subject: [Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays
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--- Comment #72 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #71)
> (In reply to Frank Ch. Eigler from comment #70)
> > > We could add a NATIVE_ENCODE_RANGE_EXPR that encodes a contiguous range of
> > > bytes in native target representation. Of course that has to be kept
> > > throughout GIMPLE.
> >
> > (Just a silly spitballing here ... but if such a native target
> > representation is
> > not processed again before being sent to the assembler, it could even be
> > stored compressed.)
>
> One step at a time - but sure. Note that we _do_ inspect the data for
> constant folding so whether to compress needs to be evaluated on a
> case-by-case
> basis (only initializers to non-constant objects for example?)
For anything we need to be able to access it easily, say if you have
int a[2][100000000] = { { huge NATIVE_ENCODE_RANGE_EXPR initializer here },
[0][42] = 42 };
For the non-compressed target dependent initializer we actually have a tree
already, STRING_CST, and we actually since PR71625 use it for char/signed
char/unsigned char array initializers, but decide to use it and convert to it
only after the initializer parsing is done, while to avoid using lots of memory
we'd need to decide for that already during parsing, say after parsing a couple
hundreds or thousands elements. And we might consider using it for other types
as well and just natively encode/decode stuff from/to the STRING_CST as needed.
>From gcc-bugs-return-635737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 08:50:50 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Just a note to all these testcases, you could try to turn them into a single
source file testcases by defining optimize_me_not in the same file with
__attribute__((noipa)) on it.
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--- Comment #73 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 1 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12245
>
> --- Comment #72 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #71)
> > (In reply to Frank Ch. Eigler from comment #70)
> > > > We could add a NATIVE_ENCODE_RANGE_EXPR that encodes a contiguous range of
> > > > bytes in native target representation. Of course that has to be kept
> > > > throughout GIMPLE.
> > >
> > > (Just a silly spitballing here ... but if such a native target
> > > representation is
> > > not processed again before being sent to the assembler, it could even be
> > > stored compressed.)
> >
> > One step at a time - but sure. Note that we _do_ inspect the data for
> > constant folding so whether to compress needs to be evaluated on a
> > case-by-case
> > basis (only initializers to non-constant objects for example?)
>
> For anything we need to be able to access it easily, say if you have
> int a[2][100000000] = { { huge NATIVE_ENCODE_RANGE_EXPR initializer here },
> [0][42] = 42 };
>
> For the non-compressed target dependent initializer we actually have a tree
> already, STRING_CST, and we actually since PR71625 use it for char/signed
> char/unsigned char array initializers, but decide to use it and convert to it
> only after the initializer parsing is done, while to avoid using lots of memory
> we'd need to decide for that already during parsing, say after parsing a couple
> hundreds or thousands elements. And we might consider using it for other types
> as well and just natively encode/decode stuff from/to the STRING_CST as needed.
Yes, we'd usually not end up with a single NATIVE_ENCODE_RANGE_EXPR but
we need to create that "block-wise" to have any savings. IIRC part of the
reason for the bloat was that we require constructor indices to be
present even for contiguous elements which means having INTEGER_CSTs
counting from zero to very large. IIRC I had some partial patches that
tried to delay actual constructor element creation for contiguous elements
but somehow it didn't work out - and it would break (not save anything)
once you start using designated initializers...
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Subject: [Bug fortran/77604] ICE in get_frame_type, at tree-nested.c:208
Date: Fri, 01 Mar 2019 09:14:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #5)
> > Does this still fail? I cannot reproduce with current trunk or 8-branch.
>
> The PR seems to be fixed on 7.4.1, 8.3.1 and trunk (9.0).
I can confirm that, fixed on trunk in r267347. Thus, closing as fixed.
>
> My archives point to r267379, but I don't understand why.
>
> Also I don't see why this is ice-on-invalid-code.
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Subject: [Bug target/89534] mingw is not declaring MAKE_DECL_ONE_ONLY macro
Date: Fri, 01 Mar 2019 09:20:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to jon_y from comment #1)
> Weak symbols aren't quite supported with PE, I'm not sure if making the
> symbol weak is the right approach.
>
> Do you have a test case to show this will lead to the correct behavior with
> MAKE_DECL_ONE_ONLY?
Well, it's related to https://sourceware.org/bugzilla/show_bug.cgi?id=24267
where we get a different resolution on COFF than on ELF. But apparently, it's a
bug in binutils. I was just curious what makes a difference from compiler
perspective (among ELF and COFF) and MAKE_DECL_ONE_ONLY was the difference.
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Subject: [Bug middle-end/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Fri, 01 Mar 2019 09:21:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Component|lto |middle-end
Known to work| |9.0
Summary|[8/9 Regression] ICE caused |[8 Regression] ICE caused
|by Segmentation Fault when |by Segmentation Fault when
|compiling cups 2.2.10 with |compiling cups 2.2.10 with
|LTO flags enabled |LTO flags enabled
Known to fail|9.0 |
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug middle-end/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Fri, 01 Mar 2019 09:22:00 -0000
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--- Comment #21 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 1 09:21:30 2019
New Revision: 269302
URL: https://gcc.gnu.org/viewcvs?rev=269302&root=gcc&view=rev
Log:
2019-03-01 Richard Biener <rguenther@suse.de>
PR middle-end/89497
* tree-cfgcleanup.h (cleanup_tree_cfg): Add SSA update flags
argument, defaulted to zero.
* passes.c (execute_function_todo): Pass down SSA update flags
to cleanup_tree_cfg.
* tree-cfgcleanup.c: Include tree-into-ssa.h and tree-cfgcleanup.h.
(cleanup_tree_cfg_noloop): After cleanup_control_flow_pre update SSA
form if requested.
(cleanup_tree_cfg): Get and pass down SSA update flags.
* gcc.dg/tree-ssa/reassoc-43.c: Avoid false match in regex.
* g++.dg/tree-prof/devirt.C: Scan tracer dump for foldings
that happen now earlier.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/passes.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/tree-prof/devirt.C
trunk/gcc/testsuite/gcc.dg/tree-ssa/reassoc-43.c
trunk/gcc/tree-cfgcleanup.c
trunk/gcc/tree-cfgcleanup.h
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Subject: [Bug middle-end/89543] New: Don't modify TREE_NO_WARNING during folding in place
Date: Fri, 01 Mar 2019 09:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89543
Bug ID: 89543
Summary: Don't modify TREE_NO_WARNING during folding in place
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking, ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
CC: marxin at gcc dot gnu.org, tschwinge at gcc dot gnu.org
Depends on: 89503
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
+++ This bug was initially created as a clone of Bug #89503 +++
As discussed in https://gcc.gnu.org/ml/gcc-patches/2019-03/msg00013.html and
surrounding thread, it might be a good idea not to modify TREE_NO_WARNING flags
in-place during folding, but instead unshare whatever trees surround it.
In that case the PR89503 change can be reverted.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89503
[Bug 89503] Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
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Subject: [Bug c++/89522] [8 Regression] ICE: trying to capture 'f' in instantiation of generic lambda
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |8.4
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Subject: [Bug middle-end/89503] Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 1 09:26:40 2019
New Revision: 269303
URL: https://gcc.gnu.org/viewcvs?rev=269303&root=gcc&view=rev
Log:
PR middle-end/89503
* fold-const.c (fold_checksum_tree): Ignore TREE_NO_WARNING bit
on DECL_P and EXPR_P.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
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Subject: [Bug c/65403] -Wno-error=<not implemented> is an error
Date: Fri, 01 Mar 2019 09:28:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |alexhenrie24 at gmail dot com
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89524 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:28:27 2019
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Subject: [Bug middle-end/89503] Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
Date: Fri, 01 Mar 2019 09:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/89543] Don't modify TREE_NO_WARNING during folding in place
Date: Fri, 01 Mar 2019 09:28:00 -0000
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Bug 89543 depends on bug 89503, which changed state.
Bug 89503 Summary: Checking ICE in 'gcc.dg/warn-strlen-no-nul.c'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89503
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>From gcc-bugs-return-635748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:28:54 2019
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Subject: [Bug c/89524] -Wno-error doesn't work with warnings from newer versions of GCC
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
dup.
*** This bug has been marked as a duplicate of bug 65403 ***
>From gcc-bugs-return-635750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:31:42 2019
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
Date: Fri, 01 Mar 2019 09:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-635751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:35:19 2019
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Subject: [Bug c++/89538] [7.3.0] GCC miscompiling LLVM because of wrong vectorization
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you at least attach preprocessed source of DwarfDebug.cpp plus the compiler
command that is used to cause the issue? You also may want to try GCC 7.4
which has fixes over GCC 7.3.
>From gcc-bugs-return-635753-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:36:41 2019
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
Date: Fri, 01 Mar 2019 09:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine obviously.
>From gcc-bugs-return-635752-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:36:17 2019
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Subject: [Bug libquadmath/89540] roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 09:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So INVALID/FIXED?
>From gcc-bugs-return-635754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:37:42 2019
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Subject: [Bug preprocessor/89542] Error reported on incorrect line number when using GCC to compile .S files using #include
Date: Fri, 01 Mar 2019 09:37:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also note that GCC 4.2.1 is no longer maintained.
>From gcc-bugs-return-635755-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:43:34 2019
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we have
C.3857 = 1;
where the LHS is a CONST_DECL and this doesn't get a virtual definition.
This is arguably bad IL (a CONST_DECL LHS should have been rejected by
the GIMPLE verifier). We end up here from inlining
za (integer(kind=4) & restrict wl)
{
<bb 2> :
*wl_2(D) = 1;
return;
}
into
lh ()
{
<bb 2> :
za (&C.3856);
za (&C.3857);
return;
}
I guess this is invalid Fortran but only at runtime and the proper place
to "fix-up" is likely the inliner.
DCE happily removes all "stores" to CONST_DECLs w/o further consideration.
>From gcc-bugs-return-635756-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:49:10 2019
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #23 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrey Drobyshev from comment #22)
> Created attachment 45851 [details]
> Work-in-progress fix considering relocations
>
> I'm a bit stuck. I managed to precompute reloc value for the globals (the
> code for detect_reloc_for_node() is stealed from get_variable_section ()). I
> also succeded in putting dummy variable into .data.rel.ro by making a decl
> of a pointer type.
Nice progress!
> But .data.rel is not working: checks from varasm.c:1173
> and varasm.c:1197 are somewhat conflicting. Maybe you could find a way to
> overcome this?
Can you please paste content of the lines, the lines you mentioned point to a
'}' for me.
>From gcc-bugs-return-635757-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:53:32 2019
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Fri, 01 Mar 2019 09:53:00 -0000
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #23)
> (In reply to Andrey Drobyshev from comment #22)
> > Created attachment 45851 [details]
> > Work-in-progress fix considering relocations
> >
> > I'm a bit stuck. I managed to precompute reloc value for the globals (the
> > code for detect_reloc_for_node() is stealed from get_variable_section ()). I
> > also succeded in putting dummy variable into .data.rel.ro by making a decl
> > of a pointer type.
>
> Nice progress!
>
> > But .data.rel is not working: checks from varasm.c:1173
> > and varasm.c:1197 are somewhat conflicting. Maybe you could find a way to
> > overcome this?
>
> Can you please paste content of the lines, the lines you mentioned point to
> a '}' for me.
I would like to ask, has the idea of adding an artificial object linked with
-fsanitize=address early on the link line which would register artificial dummy
variables in at least the most common data sections been considered and
rejected?
I mean, it should at least for large libraries mean significantly fewer dummy
variables, on the other side, when mixing sanitized and non-sanitized objects
within one binary/library (having sanitized ones first and then say linking a
static library non-sanitized would be fine) would mean catching up fewer
issues.
>From gcc-bugs-return-635758-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 09:59:22 2019
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Quite similar to PR87117.
>From gcc-bugs-return-635759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 10:26:43 2019
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Subject: [Bug middle-end/89544] New: Argument marshalling incorrectly assumes stack slots are naturally aligned.
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Bug ID: 89544
Summary: Argument marshalling incorrectly assumes stack slots
are naturally aligned.
Product: gcc
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CC: bernd.edlinger at hotmail dot de, ebotcazou at gcc dot gnu.org
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Target: arm
The AAPCS requires that an object which is artificially overaligned is passed
at either its natural alignment (if <= 8) or on an 8-byte boundary if it is
more aligned than that. So a struct of the form
struct s
{ int a; int b;} __attribute__((aligned(8));
has a natural alignment of 4 and must be passed by value with 4-byte alignment.
The middle end code ignores this and assign_parm_find_stack_rtl ends up
generating invalid rtl of the form
(mem/c:DI (plus:SI (reg/f:SI 104 virtual-incoming-args)
(const_int 4 [0x4])) [1 f+0 S8 A32])
ie a DImode object with 32-bit alignment. It then proceeds to ignore the under
alignment when expanding to RTL and incorrectly calls gen_movdi directly,
rather than falling back to the misaligned move code.
Test case:
struct s {
int a, b;
} __attribute__((aligned(8)));
struct s f0;
int f(int a, int b, int c, int d, int e, struct s f)
{
f0 = f;
return __alignof(f);
}
When compiled with "-O -march=armv5te" generates:
@ args = 12, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
ldrd r0, [sp, #4] <========== Invalid alignment for ldrd
ldr r3, .L2
strd r0, [r3]
mov r0, #8
bx lr
>From gcc-bugs-return-635760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 10:32:53 2019
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Subject: [Bug target/89534] mingw is not declaring MAKE_DECL_ONE_ONLY macro
Date: Fri, 01 Mar 2019 10:32:00 -0000
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--- Comment #3 from jon_y <10walls at gmail dot com> ---
My experience with weak symbols on mingw is that it will lead to an undefined
symbol error if it was the only symbol definition.
It only works if the weak symbol was encountered before the undefined symbol,
reversing the usual symbol resolution order.
So marking linkonce symbols as weak seems to be a strange solution to me.
>From gcc-bugs-return-635761-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 10:36:57 2019
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Subject: [Bug target/89545] New: ABI clarification for over-aligned type stack passing
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For the following, if you compile with -O3 -mavx2
-fno-tree-loop-distribute-patterns -fno-ipa-cp you see vectorization assuming
32byte alignment of the stack slot for 'y' in foo. That seems to be OK
given that main uses appropriately aligned stack-slots for the arguments
but I don't see this documented in the x86 ABI anywhere.
struct X { char x[32]; } __attribute__((aligned(32)));
struct X x;
struct Y { int i; float f; };
void __attribute__((noinline)) baz (struct X *p) { *(volatile char *)p->x; }
void __attribute__((noinline))
foo (int i1, int i2, int i3, int i4, int i5, int i6, struct X pad1, struct Y
pad, struct X y)
{
for (unsigned i = 0; i < 32; ++i)
y.x[i] = 1;
baz (&y);
}
int main()
{
struct Y y;
foo (0,1,2,3,4,5, x, y, x);
}
>From gcc-bugs-return-635762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 10:44:43 2019
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Subject: [Bug c++/63872] -Wunused-local-typedefs warns incorrectly on a typedef that's referenced from a template
Date: Fri, 01 Mar 2019 10:44:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Smaller testcase:
template<typename T>
T make()
{
return { typename T::type{0} };
}
void f()
{
struct X {
using type = int;
X(int) { }
};
make<X>();
}
local.cc: In function ‘void f()’:
local.cc:10:21: warning: typedef ‘using type = int’ locally defined but not
used [-Wunused-local-typedefs]
using type = int;
^
As stated in comment 0, this causes warnings for types with 'allocator_type' or
'is_transparent' typedefs, which get used indirectly by standard library
components and removing them would still compile but with different semantics.
Adding __attribute__((unused)) or [[maybe_unused]] does work, but shouldn't be
necessary.
>From gcc-bugs-return-635763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:16:07 2019
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Subject: [Bug c++/63872] -Wunused-local-typedefs warns incorrectly on a typedef that's referenced from a template
Date: Fri, 01 Mar 2019 11:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63872
Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This looks similar enough to PR 61596 to consider it a dup.
*** This bug has been marked as a duplicate of bug 61596 ***
>From gcc-bugs-return-635764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:16:09 2019
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Subject: [Bug c++/61596] -Wunused-local-typedefs warns incorrectly on a typedef that's referenced indirectly
Date: Fri, 01 Mar 2019 11:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61596
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 63872 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:16:11 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89180] [meta-bug] bogus/missing -Wunused warnings
Date: Fri, 01 Mar 2019 11:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89180
Bug 89180 depends on bug 63872, which changed state.
Bug 63872 Summary: -Wunused-local-typedefs warns incorrectly on a typedef that's referenced from a template
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63872
What |Removed |Added
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Resolution|--- |DUPLICATE
>From gcc-bugs-return-635766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:21:35 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Fri, 01 Mar 2019 11:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71446
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, I'm afraid I need to give up on the build_aggr_conv+desig11.C part of the
above patch, I really don't understand what C++ says that should be done.
I've tried to at least test the remaining part of the patch as incremental
improvement, but it regresses g++.dg/opt/pr65554.C. The problem is that
various spots in the compiler, e.g. reshape_init, add sometimes ce->index.
So, I'll try to use a flag on the CONSTRUCTOR to note if there are any user
designators (as opposed to something added by the compiler at some point).
>From gcc-bugs-return-635767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:23:50 2019
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
Date: Fri, 01 Mar 2019 11:23:00 -0000
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--- Comment #10 from Ciro Santilli <ciro.santilli at gmail dot com> ---
I'm tempted to give it a shot, since doc current state makes me sad :-)
If I do start work, I'll ping here to avoid work duplication.
>From gcc-bugs-return-635768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:33:56 2019
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Fri, 01 Mar 2019 11:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71446
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45863
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45863&action=edit
gcc9-pr71446.patch
That would be this (untested except for make check-c++all).
>From gcc-bugs-return-635769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 11:36:46 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
I've got a patch candidate for it. I hope we can get it in GCC 9.1.
>From gcc-bugs-return-635770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 12:16:55 2019
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Subject: [Bug middle-end/89544] Argument marshalling incorrectly assumes stack slots are naturally aligned.
Date: Fri, 01 Mar 2019 12:16:00 -0000
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--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I think things start to go wrong in assign_parm_find_data_types. That calls
promote_function_mode, but that then has no target-specific action when the
type is a RECORD_TYPE, and it never calls the back-end in this case.
If it did, then the backend could change the promoted mode to BLKmode to
represent the fact that the object was not correctly aligned on the stack, and
presumably the code would then be forced into a more sensible action.
>From gcc-bugs-return-635771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 12:34:39 2019
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Subject: [Bug middle-end/89544] Argument marshalling incorrectly assumes stack slots are naturally aligned.
Date: Fri, 01 Mar 2019 12:34:00 -0000
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--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Dont know if it helps, but when I wrote my patch,
I remember the reason why parameter which have an address taken
is in use_register_for_decl
returns false here:
/* Honor addressability. */
if (TREE_ADDRESSABLE (decl))
return false;
if that happens the value is copied to a new stack slot,
if TREE_ADDRESSABLE is false things go wrong.
>From gcc-bugs-return-635776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 12:39:35 2019
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Subject: [Bug debug/88878] .debug_pubnames/types empty with -flto
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88878
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fdebug-types-section should be OK now on the branch as well.
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
Date: Fri, 01 Mar 2019 12:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89514
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 1 12:38:38 2019
New Revision: 269305
URL: https://gcc.gnu.org/viewcvs?rev=269305&root=gcc&view=rev
Log:
2019-03-01 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-03-01 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/89539
* dwarf2out.c (output_comdat_type_unit): Add ATTRIBUTE_UNUSED to
early_lto_debug argument.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (use_debug_types): Disable when in_lto_p.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (output_comdat_type_unit): Add early_lto_debug
parameter, prefix section name with .gnu.debuglto_ if true.
(dwarf2out_finish): Pass false to output_comdat_type_unit.
(dwarf2out_early_finish): Pass true to output_comdat_type_unit.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/89514
* dwarf2out.c (size_of_die): Key on AT_ref (a)->comdat_type_p
rather than on use_debug_types, doing what output_die does.
(value_format): Likewise.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
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Subject: [Bug lto/89514] -g -fdebug-types-section -flto gives 'Dwarf Error: bad length' in gdb
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.3.1
Resolution|--- |FIXED
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug bootstrap/89539] [9 Regression] gcc fails to build/bootstrap on MACOSX
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89539
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 1 12:38:38 2019
New Revision: 269305
URL: https://gcc.gnu.org/viewcvs?rev=269305&root=gcc&view=rev
Log:
2019-03-01 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-03-01 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/89539
* dwarf2out.c (output_comdat_type_unit): Add ATTRIBUTE_UNUSED to
early_lto_debug argument.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (use_debug_types): Disable when in_lto_p.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (output_comdat_type_unit): Add early_lto_debug
parameter, prefix section name with .gnu.debuglto_ if true.
(dwarf2out_finish): Pass false to output_comdat_type_unit.
(dwarf2out_early_finish): Pass true to output_comdat_type_unit.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/89514
* dwarf2out.c (size_of_die): Key on AT_ref (a)->comdat_type_p
rather than on use_debug_types, doing what output_die does.
(value_format): Likewise.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
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Subject: [Bug debug/88878] .debug_pubnames/types empty with -flto
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88878
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 1 12:38:38 2019
New Revision: 269305
URL: https://gcc.gnu.org/viewcvs?rev=269305&root=gcc&view=rev
Log:
2019-03-01 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-03-01 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/89539
* dwarf2out.c (output_comdat_type_unit): Add ATTRIBUTE_UNUSED to
early_lto_debug argument.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (use_debug_types): Disable when in_lto_p.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/88878
* dwarf2out.c (output_comdat_type_unit): Add early_lto_debug
parameter, prefix section name with .gnu.debuglto_ if true.
(dwarf2out_finish): Pass false to output_comdat_type_unit.
(dwarf2out_early_finish): Pass true to output_comdat_type_unit.
2019-02-27 Richard Biener <rguenther@suse.de>
PR debug/89514
* dwarf2out.c (size_of_die): Key on AT_ref (a)->comdat_type_p
rather than on use_debug_types, doing what output_die does.
(value_format): Likewise.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
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Subject: [Bug middle-end/89544] Argument marshalling incorrectly assumes stack slots are naturally aligned.
Date: Fri, 01 Mar 2019 12:40:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
PR 89545 seems very related.
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Subject: [Bug tree-optimization/89546] New: [8/9 Regression] Suspected arm flint miscompilation starting with r255510
Date: Fri, 01 Mar 2019 12:49:00 -0000
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Bug ID: 89546
Summary: [8/9 Regression] Suspected arm flint miscompilation
starting with r255510
Product: gcc
Version: 8.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
Created attachment 45864
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45864&action=edit
rh1555151-3.C
The following testcase started aborting with -O2 -mfloat-abi=hard
-march=armv7-a -mfpu=vfp -mtune=generic-armv7-a -mabi=aapcs-linux in r255510
and aborts even with current trunk.
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
Date: Fri, 01 Mar 2019 12:52:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 1 12:52:19 2019
New Revision: 269307
URL: https://gcc.gnu.org/viewcvs?rev=269307&root=gcc&view=rev
Log:
2019-03-01 Richard Biener <rguenther@suse.de>
PR middle-end/89541
* tree-ssa-operands.c (add_stmt_operand): CONST_DECL may
get virtual operands.
(get_expr_operands): Handle CONST_DECL like other decls.
* gfortran.dg/pr89451.f90: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/pr89451.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-operands.c
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Subject: [Bug tree-optimization/35362] Splitting up a switch table into smaller ones (where there a huge gaps between the clusters)
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2013-12-24 00:00:00 |2019-3-1
CC| |marxin at gcc dot gnu.org
Component|rtl-optimization |tree-optimization
--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> ---
Now a gimple optimization opportunity (tree-switch-conversion.c).
>From gcc-bugs-return-635781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 12:56:07 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
Date: Fri, 01 Mar 2019 12:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-01
CC| |jamborm at gcc dot gnu.org
Target Milestone|--- |8.4
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've tried to bisect it further, which exact SRA change makes a difference,
using:
--- gcc/tree-sra.c.jj 2019-03-01 00:21:16.431273877 +0100
+++ gcc/tree-sra.c 2019-03-01 13:09:22.437370185 +0100
@@ -650,12 +650,22 @@ pop_access_from_work_queue (void)
return access;
}
+static bool old_rev;
+static int cntxx;
/* Allocate necessary structures. */
static void
sra_initialize (void)
{
+if (getenv ("SRA") != NULL)
+{
+ int xx = atoi (getenv ("SRA"));
+ if (cntxx++ < xx)
+ old_rev = true;
+ else
+ old_rev = false;
+}
candidate_bitmap = BITMAP_ALLOC (NULL);
candidates = new hash_table<uid_decl_hasher>
(vec_safe_length (cfun->local_decls) / 2);
@@ -1156,6 +1166,8 @@ contains_vce_or_bfcref_p (const_tree ref
ref = TREE_OPERAND (ref, 0);
}
+if (old_rev) return false;
+
if (TREE_CODE (ref) != MEM_REF
|| TREE_CODE (TREE_OPERAND (ref, 0)) != ADDR_EXPR)
return false;
@@ -1367,7 +1379,7 @@ build_accesses_from_assign (gimple *stmt
if (should_scalarize_away_bitmap && !gimple_has_volatile_ops (stmt)
&& !is_gimple_reg_type (racc->type))
{
- if (contains_vce_or_bfcref_p (rhs))
+ if (!old_rev && contains_vce_or_bfcref_p (rhs))
bitmap_set_bit (cannot_scalarize_away_bitmap,
DECL_UID (racc->base));
else
patch applied on top of r255510, so that some SRA invocations are done the
r255509 way and others r255510 way and it seems it is esra pass in get_tail
that matters whether the testcase aborts or succeeds.
>From gcc-bugs-return-635782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:02:26 2019
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Subject: [Bug rtl-optimization/38711] ira should not be using df-lr except at -O1.
Date: Fri, 01 Mar 2019 13:02:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2012-09-13 00:44:58 |2019-3-1
--- Comment #10 from Steven Bosscher <steven at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #9)
Not much has changed. There's LRA now, so for targets using LRA
things may now work. Worth a try if someone's interested.
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From: "pskocik at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/65455] typeof _Atomic fails
Date: Fri, 01 Mar 2019 13:04:00 -0000
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pskocik at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pskocik at gmail dot com
--- Comment #22 from pskocik at gmail dot com ---
(In reply to Marek Polacek from comment #18)
> So this looks like a dup of PR39985. It seems that, if anything, we should
> modify __typeof to drop all qualifiers. I.e. that all of the following
> __typeofs yield "int":
>
> const int a;
> volatile int b;
> const volatile c;
> _Atomic int d;
> int *restrict e;
> __typeof (a) x;
> __typeof (b) y;
> __typeof (c) q;
> __typeof (d) r;
> __typeof (const int) z;
> __typeof (volatile const int) w;
> __typeof (volatile int) v;
> __typeof (_Atomic volatile int) t;
> __typeof (*e) *s;
>
> Or is that not so?
>
> What should we do for C++?
As a user, I can always force top-level-qualifier dropping by rvalue conversion
(e.g., with , or ?:) but it(In reply to Jens Gustedt from comment #20)
> I would be much happier with a generic operator that makes any object into
> an rvalue. One way that comes close would be `1 ? (X) : (X)`. This is an
> expression that transforms any expression `X` that is not a narrow integer
> type into an rvalue.
>
> Unfortunately it is too ugly that anybody ever will systematically write
> `__typeof__(1?(X):(X))`. But a macro
>
> #define __typeof_unqual__(X) __typeof__(1?(X):(X))
>
> could do. (And one could fix the finite number of cases that are not covered
> with `_Generic`.)
>
> I'd like to have prefix `+` for that. This could be useful in `__typeof__`
> but also in `_Generic`. Maybe gcc could extend that operator to be
> applicable to all types.
(In reply to Jens Gustedt from comment #20)
> I would be much happier with a generic operator that makes any object into
> an rvalue. One way that comes close would be `1 ? (X) : (X)`. This is an
> expression that transforms any expression `X` that is not a narrow integer
> type into an rvalue.
>
> Unfortunately it is too ugly that anybody ever will systematically write
> `__typeof__(1?(X):(X))`. But a macro
>
> #define __typeof_unqual__(X) __typeof__(1?(X):(X))
>
> could do. (And one could fix the finite number of cases that are not covered
> with `_Generic`.)
>
> I'd like to have prefix `+` for that. This could be useful in `__typeof__`
> but also in `_Generic`. Maybe gcc could extend that operator to be
> applicable to all types.
I agree __typeof should keep all top level qualifs (clang's __typeof does). But
I'd rather the unary + were not extended to non-numeric types. I frequently
rely on it to throw comptime errors when applied to non-numerics. I think the
comma should be able to accomplish the job (__typeof(0,X)) with similar brevity
as that of the unary +.
>From gcc-bugs-return-635784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:05:33 2019
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From: "maqsood3525 at live dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89547] New: pthread_mutex_lock and pthread_cond_wait do not behave properly when compiler with -flto
Date: Fri, 01 Mar 2019 13:05:00 -0000
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Bug ID: 89547
Summary: pthread_mutex_lock and pthread_cond_wait do not behave
properly when compiler with -flto
Product: gcc
Version: lto
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: maqsood3525 at live dot com
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Created attachment 45865
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45865&action=edit
reporoducer
Hi,
When compiled with -flto the calls to pthread_mutex_lock and pthread_cond_wait
do not behave as they should,
i might be missing something here but i have attached a small reporducer for
the issue both examples should block at the second pthread_mutex_lock
but the one compiled with -flto does not.
is that the desired behaviour ?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89535] [9 Regression] ICE when building 416.gamess in prepare_load_store_mask
Date: Fri, 01 Mar 2019 13:06:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89535] [9 Regression] ICE when building 416.gamess in prepare_load_store_mask
Date: Fri, 01 Mar 2019 13:06:00 -0000
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--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Fri Mar 1 13:05:40 2019
New Revision: 269308
URL: https://gcc.gnu.org/viewcvs?rev=269308&root=gcc&view=rev
Log:
Fix mask type choice in vectorizable_call (PR 89535)
This is another case in which we were failing to pass the expected
mask vector type to vect_get_vec_def_for_operand.
2019-02-28 Richard Sandiford <richard.sandiford@arm.com>
gcc/
PR tree-optimization/89535
* tree-vect-stmts.c (vectorizable_call): Record the vector types
for each operand. Calculate the fallback choice for mask operands
and pass it to vect_get_vec_def_for_operand.
gcc/testsuite/
PR tree-optimization/89535
* gfortran.dg/vect/pr89535.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/vect/pr89535.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-stmts.c
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Subject: [Bug target/86952] Avoid jump table for switch statement with -mindirect-branch=thunk
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86952
Daniel Borkmann <daniel at iogearbox dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel at iogearbox dot net
--- Comment #12 from Daniel Borkmann <daniel at iogearbox dot net> ---
I've been looking into this issue quite recently and improved the benchmark
tool a bit along the way. There need to be multiple considerations wrt to
traversing the switch cases, the case is here is doing round robin, but
additional distributions / tests could be added. Pushed here just in case:
https://github.com/borkmann/microbenchmark
Numbers I'm getting are stable:
* Xeon E3-1240, packet.net c1.small.x86 instance:
# make prep
[...]
# make
gcc -g -I. -O2 -c -o test.o test.c
gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20 -c
-o switch-no-table.o switch-no-table.c
gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
taskset 1 ./test
no retpoline : 6098325270
no jump table: 6298192058 (no retpoline: 103.28%)
jump table : 22081802856 (no retpoline: 362.10%, no jump table: 350.61%)
# make
taskset 1 ./test
no retpoline : 6098439816
no jump table: 6298242270 (no retpoline: 103.28%)
jump table : 22107872854 (no retpoline: 362.52%, no jump table: 351.02%)
# make
taskset 1 ./test
no retpoline : 6098187038
no jump table: 6298308128 (no retpoline: 103.28%)
jump table : 22071053524 (no retpoline: 361.93%, no jump table: 350.43%)
* Xeon Gold 5120, packet.net m2.xlarge.x86 instance:
# make prep
[...]
# make
gcc -g -I. -O2 -c -o test.o test.c
gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20 -c
-o switch-no-table.o switch-no-table.c
gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
taskset 1 ./test
no retpoline : 5450356814
no jump table: 5620673036 (no retpoline: 103.12%)
jump table : 21448285314 (no retpoline: 393.52%, no jump table: 381.60%)
# make
taskset 1 ./test
no retpoline : 5450356100
no jump table: 5620678302 (no retpoline: 103.12%)
jump table : 21448119720 (no retpoline: 393.52%, no jump table: 381.59%)
# make
taskset 1 ./test
no retpoline : 5450331258
no jump table: 5620839740 (no retpoline: 103.13%)
jump table : 21446922902 (no retpoline: 393.50%, no jump table: 381.56%)
I've also looked into clang for their -mretpoline flag, and they generally turn
off jump table generation in this case. For gcc, the s390 folks implemented a
target override for the default case-values-threshold to raise it to 20. For
x86 something similar could be done. Anyway, H.J. Lu asked me to reopen this
issue (but seems like I cannot make this change from my account).
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Subject: [Bug other/79885] --with-build-sysroot= does not get honored throughout the build (fix-includes, CPP, CXXCPP, configure-stage2)
Date: Fri, 01 Mar 2019 13:07:00 -0000
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Jack Howarth <howarth.at.gcc at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |howarth.at.gcc at gmail dot com
--- Comment #11 from Jack Howarth <howarth.at.gcc at gmail dot com> ---
Just a reminder that clang solves finding the position of the SDK via xcrun and
SDKROOT.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87243
The compiler stub programs that users run execute the real clang compilers by
calling them via the xcrun program which sets the SDKROOT, among other
environmental variables, for the clang compiler to use.
ENVIRONMENT
CPATH
This environment variable is modified by xcrun to include
/usr/local/include when an explicit SDK is not requested via envi-
ronment variable nor command line argument and neither -nostdinc nor
-nostdsysteminc are present.
DEVELOPER_DIR
Overrides the active developer directory. When DEVELOPER_DIR is set,
its value will be used instead of the system-wide active developer
directory.
LIBRARY_PATH
This environment variable is modified by xcrun to include
/usr/local/lib when an explicit SDK is not requested via environment
variable nor command line argument and -Z is not being passed to the
linker.
SDKROOT
Specifies the default SDK to be used when looking up tools (some
tools may have SDK specific versions).
This environment variable is also set by xcrun to be the absolute
path to the user provided SDK (either via SDKROOT or the --sdk
option), when it is used to invoke a normal developer tool (build
tools like xcodebuild or make are exempt from this behavior).
For example, if xcrun is used to invoke clang via:
xcrun --sdk macosx clang test.c
then xcrun will provide the full path to the macosx SDK in the envi-
ronment variable SDKROOT. That in turn will be used by clang(1) to
automatically select that SDK when compiling the test.c file.
TOOLCHAINS
Specifies the default toolchain to be used when looking up tools
(for tools which are toolchain specific).
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--- Comment #13 from H.J. Lu <hjl.tools at gmail dot com> ---
Reopened with new info.
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Subject: [Bug c++/88355] [c++20] Placeholder non-type template argument type deduction fails with custom types
Date: Fri, 01 Mar 2019 13:11:00 -0000
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--- Comment #2 from Emmanuel Le Trong <emmanuel.le-trong@cnrs-orleans.fr> ---
Ok I got this new snippet showing what is very probably the same bug, although
the diagnostic message is not the same at all. (And quite frankly I don't
understand it.)
$ cat bug_5.cpp
struct T {};
template <T>
struct U {};
template <T t>
void f (U<t>) {}
int main ()
{
constexpr T t;
f (U<t>{});
}
$ g++-9 -std=c++2a -Wall -Wextra bug_5.cpp
bug_5.cpp: In function ‘int main()’:
bug_5.cpp:12:18: error: no matching function for call to ‘f(U<T()>)’
12 | f (U<t>{});
| ^
bug_5.cpp:7:10: note: candidate: ‘template<T t> void
f(U<((T*)(void)0)->T::__ct_comp (((const T)t))>)’
7 | void f (U<t>) {}
| ^
bug_5.cpp:7:10: note: template argument deduction/substitution failed:
bug_5.cpp:12:18: note: couldn't deduce template parameter ‘t’
12 | f (U<t>{});
| ^
$ g++-9 --verbose
Using built-in specs.
COLLECT_GCC=g++-9
COLLECT_LTO_WRAPPER=/home/manu/system/opt/gcc-9/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-9/configure --prefix=/home/manu/system/opt/gcc-9
--program-suffix=-9 : (reconfigured) ../gcc-9/configure
--prefix=/home/manu/system/opt/gcc-9 --program-suffix=-9 : (reconfigured)
../gcc-9/configure --prefix=/home/manu/system/opt/gcc-9 --program-suffix=-9
--enable-languages=c,c++,fortran,lto,objc --no-create --no-recursion
Thread model: posix
gcc version 9.0.1 20190227 (experimental) (GCC)
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|WONTFIX |---
--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
Reopened.
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Subject: [Bug target/84072] [meta-bug] -mindirect-branch=thunk issues
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Bug 84072 depends on bug 86952, which changed state.
Bug 86952 Summary: Avoid jump table for switch statement with -mindirect-branch=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86952
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/89541] [9 Regression] ICE in VN_INFO(tree_node*)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89546
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
When get_tail is esra optimized the old way, main is:
int n1$tail$head$payload;
struct type D.9885;
struct tuple D.9880;
struct type D.9879;
struct type D.9878;
struct type D.9875;
<bb 2> [local count: 1073741825]:
MEM[(struct tuple *)&D.9885] = 3;
MEM[(struct tuple *)&D.9885 + 4B] = 2;
MEM[(struct tuple *)&D.9885 + 8B] = 4;
D.9875.tail = D.9885;
D.9885 ={v} {CLOBBER};
D.9878 = MEM[(const struct tuple &)&D.9875 + 8];
D.9879.tail = D.9878;
D.9878 ={v} {CLOBBER};
D.9880.head = MEM[(const struct type_n &)&D.9879 + 4];
n1$tail$head$payload_32 = MEM[(struct tuple *)&D.9880];
D.9880 ={v} {CLOBBER};
D.9879 ={v} {CLOBBER};
D.9875 ={v} {CLOBBER};
if (n1$tail$head$payload_32 != 2)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [99.96%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1072883002]:
return 0;
and the testcase works. If it is esra optimized the new way, I get:
int n1$tail$head$payload;
struct type n1;
<bb 2> [local count: 1073741825]:
MEM[(struct &)&n1] ={v} {CLOBBER};
n1$tail$head$payload_90 = MEM[(struct tuple *)&n1 + 4B];
if (n1$tail$head$payload_90 != 2)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [99.96%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1072883002]:
n1 ={v} {CLOBBER};
return 0;
which is undefined, so unless the testcase is UB (but passes e.g. on
x86_64-linux too, valgrind is quiet on it, -fsanitize=address,undefined too),
something went wrong during GIMPLE optimizations.
>From gcc-bugs-return-635795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:21:04 2019
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Subject: [Bug c++/89548] New: reinterpret_cast treats xvalue as prvalue
Date: Fri, 01 Mar 2019 13:21:00 -0000
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Bug ID: 89548
Summary: reinterpret_cast treats xvalue as prvalue
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
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The following program fails to compile (with -std= any of c++11, c++14, c++17,
c++2a):
int main() {
reinterpret_cast<int&&>(static_cast<int&&>(0));
}
The error reported is:
gcc-xvalue-bug.cc: In function ‘int main()’:
gcc-xvalue-bug.cc:8:48: error: invalid cast of an rvalue expression of type
‘int’ to type ‘int&&’
reinterpret_cast<int&&>(static_cast<int&&>(0));
I.e. reinterpret_cast is treating its argument as a prvalue of type "int"
rather than an xvalue of type "int&&". Testing indicates that the return value
from the static_cast is of the correct type and value category, so the problem
lies with the reinterpret_cast.
The static_cast expression could also be replaced with a function returning
"int&&" and the same problem occurs.
The same problem also occurs when less trivial conversions are requested, for
example "reinterpret_cast<unsigned int&&>(static_cast<int&&>(0))".
For comparison, clang does not give an error, and that is consistent with my
reading of the standards.
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45866
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45866&action=edit
An psABI patch
How about this?
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Subject: [Bug c++/87234] GCC should warn if template parameter redefines default argument
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-01
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
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--- Comment #2 from Michael Matz <matz at gcc dot gnu.org> ---
I think we should say something about the addresses of stack slots individual
overaligned arguments as well (i.e. that the slot itself will also be aligned
accordingly), not just for the overall effect.
>From gcc-bugs-return-635799-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:32:35 2019
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Subject: [Bug c/89547] pthread_mutex_lock and pthread_cond_wait do not behave properly when compiler with -flto
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It works just fine for me - can you please cut&paste the output of the -flto
compile command when you append -v?
>From gcc-bugs-return-635800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:32:40 2019
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The gimple dumps aren't exactly readable with so many different tuple/type etc.
types, where it is unclear what exact offset is something being stored at.
That said, in cplxlower1 I still see a possibility to get there the desired
value of 2:
MEM[(struct tupleD.7416 &)&merged2D.7477 + 4].headD.7482.payloadD.6716 = 2;
...
D.9878.headD.7889 = MEM[(const struct type_nD.6356 &)&merged2D.7477 + 4];
MEM[(struct &)&D.9880] ={v} {CLOBBER};
D.9880.headD.7099 = MEM[(const struct type_nD.6356 &)&D.9878];
D.9878 ={v} {CLOBBER};
MEM[(struct tupleD.6387 *)&D.9880 + 4B] = 4;
D.9881 = D.9880;
MEM[(struct &)&D.9874] ={v} {CLOBBER};
D.9874.headD.7096 = MEM[(const struct type_nD.6355 &)&merged2D.7477 + 8];
D.9874.tailD.7097 = D.9881;
D.9881 ={v} {CLOBBER};
D.9880 ={v} {CLOBBER};
D.9873 = D.9874;
MEM[(struct &)&D.9865] ={v} {CLOBBER};
D.9865.tailD.7802 = D.9873;
D.9873 ={v} {CLOBBER};
D.9874 ={v} {CLOBBER};
D.9875 ={v} {CLOBBER};
D.9868 = MEM[(const struct tupleD.6387 &)&D.9865 + 8];
D.9869.tailD.8063 = D.9868;
SR.34_37 = MEM[(struct tupleD.6387 *)&D.9868 + 4B];
D.9868 ={v} {CLOBBER};
MEM[(struct &)&D.9870] ={v} {CLOBBER};
D.9870.headD.7099 = MEM[(const struct type_nD.6356 &)&D.9869 + 4];
MEM[(struct &)&n1D.7646] ={v} {CLOBBER};
MEM[(struct tupleD.6387 *)&D.9870 + 4B] = SR.34_37;
n1D.7646.tailD.7097 = D.9870;
D.9870 ={v} {CLOBBER};
D.9869 ={v} {CLOBBER};
D.9865 ={v} {CLOBBER};
_2 = n1D.7646.tailD.7097.headD.7099.payloadD.6716;
if (_2 != 2)
But in the sra pass dump that possibility is gone:
MEM[(struct &)&n1D.7646] ={v} {CLOBBER};
SR.41_6 = SR.34_37;
MEM[(struct tupleD.6387 *)&n1D.7646 + 8B] = SR.41_6;
n1$tail$head$payload_90 = MEM[(struct tupleD.6387 *)&n1D.7646 + 4B];
...
_2 = n1$tail$head$payload_90;
if (_2 != 2)
>From gcc-bugs-return-635801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:33:15 2019
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |wrong-code
Target| |arm
Priority|P3 |P2
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Subject: [Bug target/89517] [8/9 Regression] AArch64's configure option --with-arch can silently lead to incorrectly configured compiler
Date: Fri, 01 Mar 2019 13:34:00 -0000
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--- Comment #1 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Fri Mar 1 13:34:14 2019
New Revision: 269309
URL: https://gcc.gnu.org/viewcvs?rev=269309&root=gcc&view=rev
Log:
AArch64: Make every option in options.def one line
Due to config.gcc all the options need to be on one line because of the grep
lines which would select only the first line of the option.
This causes it not to select the right bits on options that are spread over
multiple lines when the --with-arch configure option is used. The issue
happens
silently and you just get a compiler with an incorrect set of default flags.
This solution just collapses everything back to one line as they were in GCC7.
Unfortunately this does make some lines quite long.
I do have an alternate patch which used the pre-processors to first flatten the
file in config.gcc. I will send that one out for GCC 10.
gcc/ChangeLog:
PR target/89517
* config/aarch64/aarch64-option-extensions.def (fp, simd, crypto, fp16,
rdma, dotprod, sha2, sha3, sm4, fp16fml, sve): Collapse line.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64-option-extensions.def
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
Date: Fri, 01 Mar 2019 13:36:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=52268
--- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #4)
> (In reply to Jonathan Wakely from comment #3)
> > I think it's still open because nobody has looked at it again recently, not
> > because of any conscious decision.
> >
> > I'm changing the component to libstdc++ as the runtime library is
> > responsible for the cleanup.
> >
> > Iain, what do you think? If comment 2 is right, then GCC 7.1 and later will
> > use __cxa_thread_atexit from libc and the destruction order will be correct.
> > I don't know when Darwin libc acquired that function, maybe it's in all
> > supported versions of Darwin but we just didn't use it until the PR 78968
> > change.
>
> A quick look says that __cxa_thread_atexit exists in libc from Darwin13,
> macOS 10.9 / Mavericks onwards.
>
> So it's not present in the system mentioned in the OP and Comment #1.
> .. it will not be present in Darwin9 and 10 which I still build and test
> for, but it's present in all versions "supported" by the vendor.
>
> We have previously worked around such issues by having a version-specific
> CRT, but not sure if that's applicable in this case.
>
> NOTE 1: Darwin uses GCC's emulatedTLS, and I have some concerns that there
> might be C++ issues with initialisers (and, thus possibly DTORs) anyway (see
> 84497).
and also bug 52268
>
> NOTE 2: (I don't think it's relevant, but just for completeness) Darwin's
> linker doesn't support ctor/dtor priorities.
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Subject: [Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin
Date: Fri, 01 Mar 2019 13:36:00 -0000
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--- Comment #12 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> Any progress on this?
I know what happens but am not fully sure as of why. The sp register should not
be available for the problematic move, so I'm figuring out why we got this
wrong.
>From gcc-bugs-return-635805-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 13:39:29 2019
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Subject: [Bug c/89547] pthread_mutex_lock and pthread_cond_wait do not behave properly when compiler with -flto
Date: Fri, 01 Mar 2019 13:39:00 -0000
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--- Comment #2 from maqsood3525 at live dot com ---
Hi ,
pardon me for the my tardinees , i should have mentioned the gcc version that
is gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
the -flto output is attached.
Thanks
Haroon
________________________________
From: rguenth at gcc dot gnu.org <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89547] pthread_mutex_lock and pthread_cond_wait do not behave
properly when compiler with -flto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89547
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-01
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It works just fine for me - can you please cut&paste the output of the -flto
compile command when you append -v?
--
You are receiving this mail because:
You reported the bug.
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It probably implements what we do but changing 32 to 1024*1024 shows that we
(possibly up to MAX_OFILE_ALIGNMENT) align parameters to arbitrarily high
values. Maybe we should cap that to some value (but make sure to not run
into issues like PR89544).
The footnote could cite an example using _Alignas.
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
Date: Fri, 01 Mar 2019 13:43:00 -0000
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Michael Matz from comment #2)
> I think we should say something about the addresses of stack slots
> individual overaligned arguments as well (i.e. that the slot itself will
> also be aligned
> accordingly), not just for the overall effect.
How about
diff --git a/low-level-sys-info.tex b/low-level-sys-info.tex
index a1778fa..a1cf2e4 100644
--- a/low-level-sys-info.tex
+++ b/low-level-sys-info.tex
@@ -519,7 +519,7 @@ Once arguments are classified, the registers get assigned
(in
left-to-right order) for passing as follows:
\begin{enumerate}
-\item If the class is MEMORY, pass the argument on the stack.
+\item If the class is MEMORY, align and pass the argument on the stack.
\item If the class is INTEGER, the next available register of the
sequence \RDI, \RSI, \RDX, \RCX, \reg{r8} and \reg{r9} is
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #3)
> It probably implements what we do but changing 32 to 1024*1024 shows that we
> (possibly up to MAX_OFILE_ALIGNMENT) align parameters to arbitrarily high
X86 backend can align stack up to MAX_OFILE_ALIGNMENT.
> values. Maybe we should cap that to some value (but make sure to not run
> into issues like PR89544).
>
> The footnote could cite an example using _Alignas.
We don't need a limit in psABI. But GCC can set a reasonable limit like
MAX_OFILE_ALIGNMENT.
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Subject: [Bug middle-end/89544] Argument marshalling incorrectly assumes stack slots are naturally aligned.
Date: Fri, 01 Mar 2019 13:52:00 -0000
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--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
An alternative way of fixing this might be if the backend could somehow control
DECL_ARG_TYPE for the parameter, to set it to a variant without the additional
alignment.
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Subject: [Bug target/89517] [8/9 Regression] AArch64's configure option --with-arch can silently lead to incorrectly configured compiler
Date: Fri, 01 Mar 2019 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89517
--- Comment #2 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Fri Mar 1 14:07:38 2019
New Revision: 269313
URL: https://gcc.gnu.org/viewcvs?rev=269313&root=gcc&view=rev
Log:
AArch64: Make every option in options.def one line (GCC-8).
Due to config.gcc all the options need to be on one line because of the grep
lines which would select only the first line of the option.
This causes it not to select the right bits on options that are spread over
multiple lines when the --with-arch configure option is used. The issue
happens
silently and you just get a compiler with an incorrect set of default flags.
This solution just collapses everything back to one line as they were in GCC7.
Unfortunately this does make some lines quite long.
gcc/ChangeLog:
PR target/89517
* config/aarch64/aarch64-option-extensions.def (fp, simd, crypto,
fp16): Collapse line.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/aarch64/aarch64-option-extensions.def
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Subject: [Bug target/89517] [8/9 Regression] AArch64's configure option --with-arch can silently lead to incorrectly configured compiler
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
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--- Comment #3 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Fixed both in trunk and GCC-8
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Subject: [Bug tree-optimization/89491] Inline jump tables
Date: Fri, 01 Mar 2019 14:15:00 -0000
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--- Comment #5 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
Let's take the original example with small modification:
int square(int x) { return x*x; }
int add(int x) { return x + x; }
typedef int (*p)(int);
static const p arr[4] = {square, add};
int test(int x) {
int res = arr[x](1);
return res;
}
Nothing is expanded/inlined. ICC can do it for "two items in arr" case.
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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is obsolete| |
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45868
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45868&action=edit
A new psABI patch
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Subject: [Bug c++/89513] constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 1 14:20:03 2019
New Revision: 269314
URL: https://gcc.gnu.org/viewcvs?rev=269314&root=gcc&view=rev
Log:
Implement P1002R1, Try-catch blocks in constexpr functions
PR c++/89513
* parser.c (cp_parser_ctor_initializer_opt_and_function_body):
Diagnose constexpr ctor or function with function-try-block with
pedwarn for c++17 and earlier. Formatting fix.
(cp_parser_try_block): Use pedwarn instead of error and only for
c++17 and earlier when try block appears in constexpr function.
* constexpr.c (build_constexpr_constructor_member_initializers):
Handle TRY_BLOCK here instead of erroring on it.
* g++.dg/cpp2a/constexpr-try1.C: New test.
* g++.dg/cpp2a/constexpr-try2.C: New test.
* g++.dg/cpp2a/constexpr-try3.C: New test.
* g++.dg/cpp2a/constexpr-try4.C: New test.
* g++.dg/cpp2a/constexpr-try5.C: New test.
* g++.dg/cpp0x/constexpr-ctor10.C: Don't expect error for C++2a.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-try1.C
trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-try2.C
trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-try3.C
trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-try4.C
trunk/gcc/testsuite/g++.dg/cpp2a/constexpr-try5.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor10.C
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Subject: [Bug c++/55004] [meta-bug] constexpr issues
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Bug 55004 depends on bug 89513, which changed state.
Bug 89513 Summary: constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89513
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/89513] constexpr functions with function try block shouldn't be accepted at least with -pedantic in -std=c++{11,14,17} modes
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed now.
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
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--- Comment #7 from Michael Matz <matz at gcc dot gnu.org> ---
What about this variant of the second part?
diff --git a/x86-64-ABI/low-level-sys-info.tex
b/x86-64-ABI/low-level-sys-info.tex
index 66270b9..93b5e95 100644
--- a/x86-64-ABI/low-level-sys-info.tex
+++ b/x86-64-ABI/low-level-sys-info.tex
@@ -517,7 +517,9 @@ Once arguments are classified, the registers get assigned
(in
left-to-right order) for passing as follows:
\begin{enumerate}
-\item If the class is MEMORY, pass the argument on the stack.
+\item If the class is MEMORY, pass the argument on the stack at an
+ address respecting the arguments alignment (which might be more
+ than its natural alignement).
\item If the class is INTEGER, the next available register of the
sequence \RDI, \RSI, \RDX, \RCX, \reg{r8} and \reg{r9} is
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
@Martin:
I've noticed that these tests has a suspicious construct:
gcc/testsuite/g++.dg/ext/flexary16.C:// { dg-options "-Wpedantic
-Wno-error=pedantic" }
gcc/testsuite/g++.dg/ext/flexary18.C:// { dg-additional-options "-Wpedantic
-Wno-error=pedantic" }
gcc/testsuite/g++.dg/ext/flexary19.C:// { dg-additional-options "-Wpedantic
-Wno-error=pedantic" }
gcc/testsuite/g++.dg/ext/flexary7.C:// { dg-options "-Wpedantic
-Wno-error=pedantic" }
gcc/testsuite/g++.dg/ext/flexary9.C:// { dg-options "-Wpedantic
-Wno-error=pedantic" }
gcc/testsuite/g++.dg/ubsan/object-size-1.C:// { dg-options "-Wpedantic
-Wno-error=pedantic -fsanitize=undefined -fpermissive" }
Note that with my patch the warning (Wpedantic) is disabled. Is it intentional
to mix the -Wpedantic and -Wno-error=pedantic?
>From gcc-bugs-return-635820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 14:46:42 2019
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45868|0 |1
is obsolete| |
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45869
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45869&action=edit
An psABI patch
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Subject: [Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin
Date: Fri, 01 Mar 2019 14:46:00 -0000
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--- Comment #13 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
So now I understand, finally. We move up an sp decrement and are supposed to
check that sp is available on the paths that are not touched by the move. There
are several successors of the move target block so the checking code is special
(and was the same there since day 1 of sel-sched). The code checks, for each
successor block, the expressions that are present in the merged availability
set at the end of target block but are not present in the successor block set.
Such expressions are marked as having unavailable target registers.
In this case for one successor block there happens to be another fence, and
that fence set has the copy of the sp decrement instruction. So it is not
detected as being unavailable. What _should_ have happened is that the
successor block with another fence should have been marked as ineligible
successor (we don't move along that path), so the av set against which we're
checking has to be NULL. The fix is just to have that properly accounted for.
The patch is below, and I wouldn't be surprised if it fixes more PRs than this
one.
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index 315f2c0c0ab..2053694b196 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -2820,10 +2820,12 @@ compute_av_set_at_bb_end (insn_t insn, ilist_t p, int
ws)
FOR_EACH_VEC_ELT (sinfo->succs_ok, is, succ)
{
basic_block succ_bb = BLOCK_FOR_INSN (succ);
+ av_set_t av_succ = (is_ineligible_successor (succ, p)
+ ? NULL
+ : BB_AV_SET (succ_bb));
gcc_assert (BB_LV_SET_VALID_P (succ_bb));
- mark_unavailable_targets (av1, BB_AV_SET (succ_bb),
- BB_LV_SET (succ_bb));
+ mark_unavailable_targets (av1, av_succ, BB_LV_SET (succ_bb));
}
/* Finally, check liveness restrictions on paths leaving the region. */
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--- Comment #6 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Yep, fixed, thanks for the overnight reaction^^. (and next time I think I have
the guts to mark it as 'bootstrap' right from the beginning)
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Subject: [Bug target/89545] ABI clarification for over-aligned type stack passing
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--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Michael Matz from comment #7)
> What about this variant of the second part?
>
Hi Michael,
I moved x86 psABI repo to
https://gitlab.com/x86-psABIs
Would you like to be co-owners?
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--- Comment #10 from Michael Matz <matz at gcc dot gnu.org> ---
Ah, I missed that. Yeah, I'd like to be co-owner.
>From gcc-bugs-return-635824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 14:55:24 2019
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--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Michael Matz from comment #10)
> Ah, I missed that. Yeah, I'd like to be co-owner.
Please send me your gitlab account name.
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--- Comment #12 from Michael Matz <matz at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #11)
> (In reply to Michael Matz from comment #10)
> > Ah, I missed that. Yeah, I'd like to be co-owner.
>
> Please send me your gitlab account name.
Err, right, that probably helps ;-) It's 'susematz'
>From gcc-bugs-return-635826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 14:57:35 2019
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Subject: [Bug tree-optimization/35362] Splitting up a switch table into smaller ones (where there a huge gaps between the clusters)
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I can confirm it's implemented. One get following clusters for the 2 tests:
grep clusters pr36362.c.171t.switchlower1
;; GIMPLE switch case clusters: JT:0-20 JT:110-220 JT:310-324
grep clusters pr36362-2.c.171t.switchlower1
;; GIMPLE switch case clusters: JT:0-20 JT:110-220 JT:310-324 1318 1320-1324
Which looks good to me.
>From gcc-bugs-return-635827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:21:48 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86952] Avoid jump table for switch statement with -mindirect-branch=thunk
Date: Fri, 01 Mar 2019 15:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86952
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Daniel Borkmann from comment #12)
> I've been looking into this issue quite recently and improved the benchmark
> tool a bit along the way. There need to be multiple considerations wrt to
> traversing the switch cases, the case is here is doing round robin, but
> additional distributions / tests could be added. Pushed here just in case:
> https://github.com/borkmann/microbenchmark
Thanks a lot for the benchmark.
>
> Numbers I'm getting are stable:
>
> * Xeon E3-1240, packet.net c1.small.x86 instance:
>
> # make prep
> [...]
> # make
> gcc -g -I. -O2 -c -o test.o test.c
> gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20
> -c -o switch-no-table.o switch-no-table.c
> gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
> gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
> gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
> taskset 1 ./test
> no retpoline : 6098325270
> no jump table: 6298192058 (no retpoline: 103.28%)
> jump table : 22081802856 (no retpoline: 362.10%, no jump table:
> 350.61%)
> # make
> taskset 1 ./test
> no retpoline : 6098439816
> no jump table: 6298242270 (no retpoline: 103.28%)
> jump table : 22107872854 (no retpoline: 362.52%, no jump table:
> 351.02%)
> # make
> taskset 1 ./test
> no retpoline : 6098187038
> no jump table: 6298308128 (no retpoline: 103.28%)
> jump table : 22071053524 (no retpoline: 361.93%, no jump table:
> 350.43%)
>
> * Xeon Gold 5120, packet.net m2.xlarge.x86 instance:
>
> # make prep
> [...]
> # make
> gcc -g -I. -O2 -c -o test.o test.c
> gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20
> -c -o switch-no-table.o switch-no-table.c
> gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
> gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
> gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
> taskset 1 ./test
> no retpoline : 5450356814
> no jump table: 5620673036 (no retpoline: 103.12%)
> jump table : 21448285314 (no retpoline: 393.52%, no jump table:
> 381.60%)
> # make
> taskset 1 ./test
> no retpoline : 5450356100
> no jump table: 5620678302 (no retpoline: 103.12%)
> jump table : 21448119720 (no retpoline: 393.52%, no jump table:
> 381.59%)
> # make
> taskset 1 ./test
> no retpoline : 5450331258
> no jump table: 5620839740 (no retpoline: 103.13%)
> jump table : 21446922902 (no retpoline: 393.50%, no jump table:
> 381.56%)
I can confirm the numbers. I've got:
model name : Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
taskset 1 ./test
no retpoline : 4311969467
no jump table: 5146081372 (no retpoline: 119.34%)
jump table : 18845846887 (no retpoline: 437.06%, no jump table: 366.22%)
>
> I've also looked into clang for their -mretpoline flag, and they generally
> turn off jump table generation in this case. For gcc, the s390 folks
> implemented a target override for the default case-values-threshold to raise
> it to 20.
Note that GCC has similar parameter:
--param case-values-threshold
The smallest number of different values for which it is best to
use a jump-table instead of a tree of conditional branches. If the value is 0,
use the default for the machine. The default is 0.
For 20 branches, I've got even worse numbers:
https://github.com/marxin/microbenchmark-1/tree/retpoline-table
taskset 1 ./test
no retpoline : 5096377521
no jump table: 5169400990 (no retpoline: 101.43%)
jump table : 28830137876 (no retpoline: 565.70%, no jump table: 557.71%)
So are you suggesting to disable jump tables with retpolines at all?
For x86 something similar could be done. Anyway, H.J. Lu asked me
> to reopen this issue (but seems like I cannot make this change from my
> account).
Yep, I would need an account ending with @gcc.org to change a bug.
>From gcc-bugs-return-635828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:25:14 2019
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Subject: [Bug c/89549] New: -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
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Bug ID: 89549
Summary: -Wmisleading-indentation is disabled from this point
onwards, since column-tracking was disabled due to the
size of the code/headers
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Seen on a test-case that is not having many lines, but one line is very wide:
$ cat mi.ii
class String {
public: bool
operator==(char *) const; bool operator!=(char *) ;
String() ; String(char *); };
class StringName { public:
StringName(char *); };
template <class a> class List { public: void push_back( a ) ;
};
class Variant { public: enum b { NIL} ; };
enum c { PROPERTY_HINT_NONE};
enum { PROPERTY_USAGE_CATEGORY
};
struct PropertyInfo { PropertyInfo(Variant::b ,
String , c , String , int ) ; };
class Object { protected: static String _get_category() ;
void _set() ; bool _get( StringName , Variant ) const ; void
_get_property_list(List<PropertyInfo> *) const ; void _notification();
static void _get_valid_parents_static(List<String> *)
; bool _is_gpl_reversed() const
;
};
class ClassDB { public: template <class > void
_add_class() ; static void get_property_list(StringName ,
List<PropertyInfo> *, bool , const Object * );
};
class d : public Object { protected: static void _bind_methods(); };
class AudioStreamPlayback : public d { public:
static String get_class_static() ; bool is_class( String ) const ; bool
is_class_ptr(void *) const ; static void *_get_bind_methods() ; static void
initialize_class() ; bool (Object::*_get_get() const)(const StringName &,
Variant &) const ; bool _getv( StringName , Variant ) const ; bool
(Object::*_get_set() )(const StringName &, const Variant &) ; bool _setv(
StringName , Variant ) ; void (Object::*_get_get_property_list()
const)(List<PropertyInfo> * ) const ; void
_get_property_listv(List<PropertyInfo> *, bool ) const ; };
String get_category_static_category ;
class AudioStreamPlaybackRandomPitch : public AudioStreamPlayback {
private: mutable StringName _class_name; friend class ClassDB; public:
static inline void *get_class_ptr_static() { static int ptr; return &ptr; }
static inline String get_class_static() { return
String("AudioStreamPlaybackRandomPitch"); } static inline String
get_parent_class_static() { return AudioStreamPlayback::get_class_static(); }
static void get_inheritance_list_static(List<String> *p_inheritance_list) {
AudioStreamPlayback:get_inheritance_list_static(p_inheritance_list);
p_inheritance_list->push_back(String("AudioStreamPlaybackRandomPitch")); }
static String get_category_static() { if (_get_category !=
AudioStreamPlayback::_get_category) { if (get_category_static_category != "")
get_category_static_category = ""; get_category_static_category =
_get_category(); } return get_category_static_category; } static String
inherits_static() { return String("AudioStreamPlayback"); } virtual bool
is_class(const String p_class) const { return (p_class ==
("AudioStreamPlaybackRandomPitch")) ? true :
AudioStreamPlayback::is_class(p_class); } virtual bool is_class_ptr(void
*p_ptr) const { return (p_ptr == get_class_ptr_static) ? true :
AudioStreamPlayback::is_class_ptr(p_ptr); } static void
get_valid_parents_static(List<String> *p_parents) { if
(AudioStreamPlaybackRandomPitch::_get_valid_parents_static !=
AudioStreamPlayback::_get_valid_parents_static) {
AudioStreamPlaybackRandomPitch:_get_valid_parents_static(p_parents); }
AudioStreamPlayback:get_valid_parents_static(p_parents); } protected: inline
static void (*_get_bind_methods())() { return
AudioStreamPlaybackRandomPitch::_bind_methods; } public: static void
initialize_class() { static bool initialized = false; if (initialized) return
AudioStreamPlayback::initialize_class();
ClassDB::_add_class<AudioStreamPlaybackRandomPitch>; if
(AudioStreamPlaybackRandomPitch::_get_bind_methods !=
AudioStreamPlayback::_get_bind_methods()) _bind_methods; initialized = true; }
protected: virtual void _initialize_classv() { initialize_class; } inline bool
(Object::*_get_get() const)(const StringName &p_name, Variant &) const { return
(bool (Object::*)(const StringName &, Variant &) const) &
AudioStreamPlaybackRandomPitch::_get; } virtual bool _getv(const StringName
p_name, Variant &r_ret) const { if (AudioStreamPlaybackRandomPitch::_get_get()
!= AudioStreamPlayback::_get_get()) { if (_get(p_name, r_ret)) return true; }
return AudioStreamPlayback::_getv(p_name, r_ret); } inline bool
(Object::*_get_set() const)(const StringName &p_name, const Variant
&p_property) { return (bool (Object::*)(const StringName &, const Variant &)) &
AudioStreamPlaybackRandomPitch::_set; } virtual bool _setv(const StringName
&p_name, const Variant &p_property) { if (AudioStreamPlayback::_setv(p_name,
p_property)) return true; if (AudioStreamPlaybackRandomPitch::_get_set() !=
AudioStreamPlayback::_get_set()) return false; } inline void
(Object::*_get_get_property_list() const)(List<PropertyInfo> * p_list) const {
return (void (Object::*)(List<PropertyInfo> *) const) &
AudioStreamPlaybackRandomPitch::_get_property_list; } virtual void
_get_property_listv(List<PropertyInfo> *p_list, bool p_reversed) const { if
(!p_reversed) { AudioStreamPlayback::_get_property_listv(p_list, p_reversed); }
p_list->push_back(PropertyInfo(Variant::NIL, get_class_static(),
PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_CATEGORY)); if
(!_is_gpl_reversed())
ClassDB::get_property_list("AudioStreamPlaybackRandomPitch", p_list, true,
this); if (AudioStreamPlaybackRandomPitch::_get_get_property_list() !=
AudioStreamPlayback::_get_get_property_list()) { _get_property_list(p_list); }
if (_is_gpl_reversed())
ClassDB::get_property_list("AudioStreamPlaybackRandomPitch", p_list, true,
this); if (p_reversed) { AudioStreamPlayback::_get_property_listv(p_list,
p_reversed); } } inline void (Object::*_get_notification() const)(int) { return
(void (Object::*)(int)) & AudioStreamPlaybackRandomPitch::_notification; }
virtual void _notificationv(int p_notification, bool p_reversed) { if
(p_reversed) ; p_reversed; } };
$ g++ mi.ii -c -Wmisleading-indentation
...
mi.ii: In member function ‘virtual void
AudioStreamPlaybackRandomPitch::_notificationv(int, bool)’:
mi.ii:13: note: -Wmisleading-indentation is disabled from this point onwards,
since column-tracking was disabled due to the size of the code/headers
class AudioStreamPlaybackRandomPitch : public AudioStreamPlayback {
private: mutable StringName _class_name; friend class ClassDB; public:
static inline void *get_class_ptr_static() { static int ptr; return &ptr; }
static inline String get_class_static() { return
String("AudioStreamPlaybackRandomPitch"); } static inline String
get_parent_class_static() { return AudioStreamPlayback::get_class_static(); }
static void get_inheritance_list_static(List<String> *p_inheritance_list) {
AudioStreamPlayback:get_inheritance_list_static(p_inheritance_list);
p_inheritance_list->push_back(String("AudioStreamPlaybackRandomPitch")); }
static String get_category_static() { if (_get_category !=
AudioStreamPlayback::_get_category) { if (get_category_static_category != "")
get_category_static_category = ""; get_category_static_category =
_get_category(); } return get_category_static_category; } static String
inherits_static() { return String("AudioStreamPlayback"); } virtual bool
is_class(const String p_class) const { return (p_class ==
("AudioStreamPlaybackRandomPitch")) ? true :
AudioStreamPlayback::is_class(p_class); } virtual bool is_class_ptr(void
*p_ptr) const { return (p_ptr == get_class_ptr_static) ? true :
AudioStreamPlayback::is_class_ptr(p_ptr); } static void
get_valid_parents_static(List<String> *p_parents) { if
(AudioStreamPlaybackRandomPitch::_get_valid_parents_static !=
AudioStreamPlayback::_get_valid_parents_static) {
AudioStreamPlaybackRandomPitch:_get_valid_parents_static(p_parents); }
AudioStreamPlayback:get_valid_parents_static(p_parents); } protected: inline
static void (*_get_bind_methods())() { return
AudioStreamPlaybackRandomPitch::_bind_methods; } public: static void
initialize_class() { static bool initialized = false; if (initialized) return
AudioStreamPlayback::initialize_class();
ClassDB::_add_class<AudioStreamPlaybackRandomPitch>; if
(AudioStreamPlaybackRandomPitch::_get_bind_methods !=
AudioStreamPlayback::_get_bind_methods()) _bind_methods; initialized = true; }
protected: virtual void _initialize_classv() { initialize_class; } inline bool
(Object::*_get_get() const)(const StringName &p_name, Variant &) const { return
(bool (Object::*)(const StringName &, Variant &) const) &
AudioStreamPlaybackRandomPitch::_get; } virtual bool _getv(const StringName
p_name, Variant &r_ret) const { if (AudioStreamPlaybackRandomPitch::_get_get()
!= AudioStreamPlayback::_get_get()) { if (_get(p_name, r_ret)) return true; }
return AudioStreamPlayback::_getv(p_name, r_ret); } inline bool
(Object::*_get_set() const)(const StringName &p_name, const Variant
&p_property) { return (bool (Object::*)(const StringName &, const Variant &)) &
AudioStreamPlaybackRandomPitch::_set; } virtual bool _setv(const StringName
&p_name, const Variant &p_property) { if (AudioStreamPlayback::_setv(p_name,
p_property)) return true; if (AudioStreamPlaybackRandomPitch::_get_set() !=
AudioStreamPlayback::_get_set()) return false; } inline void
(Object::*_get_get_property_list() const)(List<PropertyInfo> * p_list) const {
return (void (Object::*)(List<PropertyInfo> *) const) &
AudioStreamPlaybackRandomPitch::_get_property_list; } virtual void
_get_property_listv(List<PropertyInfo> *p_list, bool p_reversed) const { if
(!p_reversed) { AudioStreamPlayback::_get_property_listv(p_list, p_reversed); }
p_list->push_back(PropertyInfo(Variant::NIL, get_class_static(),
PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_CATEGORY)); if
(!_is_gpl_reversed())
ClassDB::get_property_list("AudioStreamPlaybackRandomPitch", p_list, true,
this); if (AudioStreamPlaybackRandomPitch::_get_get_property_list() !=
AudioStreamPlayback::_get_get_property_list()) { _get_property_list(p_list); }
if (_is_gpl_reversed())
ClassDB::get_property_list("AudioStreamPlaybackRandomPitch", p_list, true,
this); if (p_reversed) { AudioStreamPlayback::_get_property_listv(p_list,
p_reversed); } } inline void (Object::*_get_notification() const)(int) { return
(void (Object::*)(int)) & AudioStreamPlaybackRandomPitch::_notification; }
virtual void _notificationv(int p_notification, bool p_reversed) { if
(p_reversed) ; p_reversed; } };
It's probably related to line map and it's capacity. But can we do better here?
>From gcc-bugs-return-635829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:28:18 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
Date: Fri, 01 Mar 2019 15:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89549
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2019-3-1
Known to work| |6.4.0
Summary|-Wmisleading-indentation is |[7/8/9 Regression]
|disabled from this point |-Wmisleading-indentation is
|onwards, since |disabled from this point
|column-tracking was |onwards, since
|disabled due to the size of |column-tracking was
|the code/headers |disabled due to the size of
| |the code/headers
Known to fail| |7.4.0, 8.3.0, 9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r244292, thus GCC 7 regression.
>From gcc-bugs-return-635830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:37:51 2019
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Subject: [Bug c++/89550] New: Spurious array-bounds warning when using __PRETTY_FUNCTION__ as a string_view.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89550
Bug ID: 89550
Summary: Spurious array-bounds warning when using
__PRETTY_FUNCTION__ as a string_view.
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: aaron at bestateless dot com
Target Milestone: ---
Created attachment 45870
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45870&action=edit
Preprocessed source.
Compiler Information:
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
Example:
#include <string>
void foo() {
std::string_view s(__PRETTY_FUNCTION__);
s.remove_prefix(s.find_last_of(' '));
std::string().find(s.data());
}
Command Line:
g++ -std=c++17 -Warray-bounds -Werror -O2 -c test.cpp -o test.o
Does not fail for optimization levels -O0, -O1, or -O3. Only fails for -O2.
Expected:
Compiles successfully.
From experiments on https://godbolt.org/ this code compiles on 7.1, 7.2, 7.3,
7.4, 8.1, 8.2, and trunk. It fails to compile on 8.2.1 and 8.3.0.
Actual:
test.cpp: In function ‘void foo()’:
test.cpp:3:6: warning: offset ‘-1’ outside bounds of constant string
[-Warray-bounds]
void foo() {
^~~
Details:
This does not fail if the line with "remove_prefix" is commented out. In this
case __PRETTY_FUNCTION__ does contain a space, so it should not get npos from
the "find_last_of" call. Also does not fail if the call to "find" is
commented
out. It is the combination of both lines that causes the warning.
I can get this to fail in the same way on -O3 if I wrap the function in a
namespace name that is six characters in length or more. If it is five
characters or less then it does compile on -O3.
This example succeeds with "g++ -std=c++17 -Warray-bounds -Werror -O3":
#include <string>
namespace nnnnn
{
void foo() {
std::string_view s(__PRETTY_FUNCTION__);
s.remove_prefix(s.find_last_of(' '));
std::string().find(s.data());
}
}
This example fails with "g++ -std=c++17 -Warray-bounds -Werror -O3" (note the
namespace name is longer by one character):
#include <string>
namespace nnnnnn
{
void foo() {
std::string_view s(__PRETTY_FUNCTION__);
s.remove_prefix(s.find_last_of(' '));
std::string().find(s.data());
}
}
>From gcc-bugs-return-635831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:39:40 2019
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From: "daniel at iogearbox dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86952] Avoid jump table for switch statement with -mindirect-branch=thunk
Date: Fri, 01 Mar 2019 15:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86952
--- Comment #16 from Daniel Borkmann <daniel at iogearbox dot net> ---
(In reply to Martin Liška from comment #15)
> (In reply to Daniel Borkmann from comment #12)
> > I've been looking into this issue quite recently and improved the benchmark
> > tool a bit along the way. There need to be multiple considerations wrt to
> > traversing the switch cases, the case is here is doing round robin, but
> > additional distributions / tests could be added. Pushed here just in case:
> > https://github.com/borkmann/microbenchmark
>
> Thanks a lot for the benchmark.
>
> > Numbers I'm getting are stable:
> >
> > * Xeon E3-1240, packet.net c1.small.x86 instance:
> >
> > # make prep
> > [...]
> > # make
> > gcc -g -I. -O2 -c -o test.o test.c
> > gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20
> > -c -o switch-no-table.o switch-no-table.c
> > gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
> > gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
> > gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
> > taskset 1 ./test
> > no retpoline : 6098325270
> > no jump table: 6298192058 (no retpoline: 103.28%)
> > jump table : 22081802856 (no retpoline: 362.10%, no jump table:
> > 350.61%)
> > # make
> > taskset 1 ./test
> > no retpoline : 6098439816
> > no jump table: 6298242270 (no retpoline: 103.28%)
> > jump table : 22107872854 (no retpoline: 362.52%, no jump table:
> > 351.02%)
> > # make
> > taskset 1 ./test
> > no retpoline : 6098187038
> > no jump table: 6298308128 (no retpoline: 103.28%)
> > jump table : 22071053524 (no retpoline: 361.93%, no jump table:
> > 350.43%)
> >
> > * Xeon Gold 5120, packet.net m2.xlarge.x86 instance:
> >
> > # make prep
> > [...]
> > # make
> > gcc -g -I. -O2 -c -o test.o test.c
> > gcc -g -I. -O2 -mindirect-branch=thunk --param=case-values-threshold=20
> > -c -o switch-no-table.o switch-no-table.c
> > gcc -g -I. -O2 -mindirect-branch=thunk -c -o switch.o switch.c
> > gcc -g -I. -O2 -c -o switch-no-retpol.o switch-no-retpol.c
> > gcc -o test test.o switch-no-table.o switch.o switch-no-retpol.o
> > taskset 1 ./test
> > no retpoline : 5450356814
> > no jump table: 5620673036 (no retpoline: 103.12%)
> > jump table : 21448285314 (no retpoline: 393.52%, no jump table:
> > 381.60%)
> > # make
> > taskset 1 ./test
> > no retpoline : 5450356100
> > no jump table: 5620678302 (no retpoline: 103.12%)
> > jump table : 21448119720 (no retpoline: 393.52%, no jump table:
> > 381.59%)
> > # make
> > taskset 1 ./test
> > no retpoline : 5450331258
> > no jump table: 5620839740 (no retpoline: 103.13%)
> > jump table : 21446922902 (no retpoline: 393.50%, no jump table:
> > 381.56%)
>
> I can confirm the numbers. I've got:
> model name : Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
>
> taskset 1 ./test
> no retpoline : 4311969467
> no jump table: 5146081372 (no retpoline: 119.34%)
> jump table : 18845846887 (no retpoline: 437.06%, no jump table:
> 366.22%)
Ok, great, thanks for testing on your side as well!
> > I've also looked into clang for their -mretpoline flag, and they generally
> > turn off jump table generation in this case. For gcc, the s390 folks
> > implemented a target override for the default case-values-threshold to raise
> > it to 20.
>
> Note that GCC has similar parameter:
>
> --param case-values-threshold
> The smallest number of different values for which it is best
> to use a jump-table instead of a tree of conditional branches. If the value
> is 0, use the default for the machine. The default is 0.
Yeah, I know, I've used it above for the test case (see the gcc cmdline parts).
> For 20 branches, I've got even worse numbers:
> https://github.com/marxin/microbenchmark-1/tree/retpoline-table
>
> taskset 1 ./test
> no retpoline : 5096377521
> no jump table: 5169400990 (no retpoline: 101.43%)
> jump table : 28830137876 (no retpoline: 565.70%, no jump table:
> 557.71%)
>
> So are you suggesting to disable jump tables with retpolines at all?
I leave that up to you guys, but I would at min probably implement something
like s390 folks did for gcc, commit db7a90aa0de5 ("S/390: Disable prediction of
indirect branches"), see s390_case_values_threshold() which does:
+unsigned int
+s390_case_values_threshold (void)
+{
+ /* Disabling branch prediction for indirect jumps makes jump tables
+ much more expensive. */
+ if (TARGET_INDIRECT_BRANCH_NOBP_JUMP)
+ return 20;
+
+ return default_case_values_threshold ();
+}
> For x86 something similar could be done. Anyway, H.J. Lu asked me
> > to reopen this issue (but seems like I cannot make this change from my
> > account).
>
> Yep, I would need an account ending with @gcc.org to change a bug.
>From gcc-bugs-return-635832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:48:58 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
Date: Fri, 01 Mar 2019 15:48:00 -0000
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
The test passes without the -Wno-error=pedantic so it looks like it's not
necessary. I must have thought it was for some reason.
But to make sure I understand you correctly: do you mean that -Wpedantic
-Wno-error=pedantic suppresses the pedantic warnings? (I would expect that to
retain the pedantic warnings and not make them errors even if -Werror were on
the command line; unless -Wno-error=pedantic were followed by
-Werror=pedantic.)
>From gcc-bugs-return-635833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:49:45 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
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--- Comment #2 from dcci <dccitaliano at gmail dot com> ---
Thanks Jakub. We're trying to report more of these but it's hard to filter out
duplicates. A possible way we thought was that of stopping at some point in the
pipeline (so running a subset of the optimizations), to identify where this
broke.
(something like https://llvm.org/docs/OptBisect.html).
Is there any easy way of doing this in GCC? I skimmed through the docs and
haven't found any.
>From gcc-bugs-return-635834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:54:13 2019
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Subject: [Bug preprocessor/89542] Error reported on incorrect line number when using GCC to compile .S files using #include
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--- Comment #4 from puffydaemon at gmail dot com ---
Okay, I am going to try with clang...
El vie., 1 mar. 2019 a las 10:37, rguenth at gcc dot gnu.org (<
gcc-bugzilla@gcc.gnu.org>) escribió:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89542
>
> --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
> Also note that GCC 4.2.1 is no longer maintained.
>
> --
> You are receiving this mail because:
> You reported the bug.
>From gcc-bugs-return-635835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 15:56:34 2019
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Mar 1 15:55:56 2019
New Revision: 269317
URL: https://gcc.gnu.org/viewcvs?rev=269317&root=gcc&view=rev
Log:
PR c++/89532 - ICE with incomplete type in decltype.
* semantics.c (finish_compound_literal): Return error_mark_node
if digest_init_flags returns error_mark_node.
* g++.dg/cpp2a/nontype-class14.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/nontype-class14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Mar 1 15:57:46 2019
New Revision: 269318
URL: https://gcc.gnu.org/viewcvs?rev=269318&root=gcc&view=rev
Log:
PR c++/89537 - missing location for error with non-static member fn.
* call.c (resolve_args): Use EXPR_LOCATION.
* typeck.c (build_class_member_access_expr): Use input_location.
* g++.dg/diagnostic/member-fn-1.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/diagnostic/member-fn-1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89532] [9 Regression] internal compiler error: in type_has_nontrivial_copy_init, at cp/tree.c:4024
Date: Fri, 01 Mar 2019 15:58:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/89537] missing location for error
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-635839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:02:44 2019
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Subject: [Bug libstdc++/89452] basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
Date: Fri, 01 Mar 2019 16:02:00 -0000
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--- Comment #4 from Baykov Nikita <nknikita at niisi dot ras.ru> ---
I apologize for my careless mistake.
I have some other questions that I would like to clarify. Hope it will be right
to do it here.
1. You mentioned that pptr() was no longer required to be null pointer in this
case. I have checked https://cplusplus.github.io/LWG/issue2995. The issue has
WP status, but what is not clear to me whether the change affects only C++20
and further versions of the standard, or all of the versions, including C++17,
C++14, C++11, etc. The explanation in
https://cplusplus.github.io/LWG/lwg-active.html#IssueStatus looks ambigous to
me and I do not really understand the difference between DR, WP and C++1x
statuses.
2. Table 112 in N4800 describes how the positioning depends on function
arguments 'which' and 'way'. I am not sure if conditions in the first two rows
of the table are specified correctly. Maybe, they should be replaced with
'(which & (ios_base::in|ios_base::out)) == ios_base::in' and '(which &
(ios_base::in|ios_base::out)) == ios_base::out'? For now, the result doesn't
seem to depend on 'way'. If 'which == ios_base::in|ios_base::out && way ==
ios_base::cur', the conditions of the third row are not satisfied. However, the
conditions of the first two rows are satisfied, thus both input and output
sequences should be positioned, despite the fact that 'way == ios_base::cur'.
3. Your previous replies don't explain why the opening mode of the buffer
should be checked in addition to requirements of the standard.
>From gcc-bugs-return-635840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:03:53 2019
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Subject: [Bug libstdc++/89452] basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
Date: Fri, 01 Mar 2019 16:03:00 -0000
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--- Comment #5 from Baykov Nikita <nknikita at niisi dot ras.ru> ---
I apologize for my careless mistake.
I have some other questions that I would like to clarify. Hope it will be right
to do it here.
1. You mentioned that pptr() was no longer required to be null pointer in this
case. I have checked https://cplusplus.github.io/LWG/issue2995. The issue has
WP status, but what is not clear to me whether the change affects only C++20
and further versions of the standard, or all of the versions, including C++17,
C++14, C++11, etc. The explanation in
https://cplusplus.github.io/LWG/lwg-active.html#IssueStatus looks ambigous to
me and I do not really understand the difference between DR, WP and C++1x
statuses.
2. Table 112 in N4800 describes how the positioning depends on function
arguments 'which' and 'way'. I am not sure if conditions in the first two rows
of the table are specified correctly. Maybe, they should be replaced with
'(which & (ios_base::in|ios_base::out)) == ios_base::in' and '(which &
(ios_base::in|ios_base::out)) == ios_base::out'? For now, the result doesn't
seem to depend on 'way'. If 'which == ios_base::in|ios_base::out && way ==
ios_base::cur', the conditions of the third row are not satisfied. However, the
conditions of the first two rows are satisfied, thus both input and output
sequences should be positioned, despite the fact that 'way == ios_base::cur'.
3. Your previous replies don't explain why the opening mode of the buffer
should be checked in addition to requirements of the standard.
>From gcc-bugs-return-635841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:10:36 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
Date: Fri, 01 Mar 2019 16:10:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In GCC people don't disable passes usually, but just use -fdump-tree-all and/or
-da and look at the dumps where it broke. We do have
-fdisable-<kind>-<pass>{,=range-list} options to disable individual passes if
needed, or various -fno-tree-* or -fno-rtl-* etc. options, but it can give
surprising result if you disable too many and just using binary search in the
pass dumps is much better (start looking at -fdump-tree-optimized dump if it is
a GIMPLE or RTL issue, depending on that look at some pass in the middle of the
either range, etc.
>From gcc-bugs-return-635842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:12:54 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
Date: Fri, 01 Mar 2019 16:12:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Also, we usually bisect which gcc revision introduced a problem and from that
change we can often see what goes wrong quickly. Both Red Hat and SUSE have
terrabytes of built gcc revisions to make such bisection faster.
>From gcc-bugs-return-635843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:13:59 2019
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89551] New: [9 regression] Test case gcc.dg/uninit-pred-8_b.c fails after r269302
Date: Fri, 01 Mar 2019 16:13:00 -0000
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Bug ID: 89551
Summary: [9 regression] Test case gcc.dg/uninit-pred-8_b.c
fails after r269302
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
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Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
New failures (update from 269300 to 269304):
FAIL: gcc.dg/uninit-pred-8_b.c bogus warning (test for bogus messages, line 20)
FAIL: gcc.dg/uninit-pred-8_b.c bogus warning (test for bogus messages, line 39)
FAIL: gcc.dg/uninit-pred-8_b.c warning (test for warnings, line 42)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/uninit-pred-8_b.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -Wuninitialized -O2 -S -o uninit-pred-8_b.s
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/uninit-pred-8_b.c: In function
'foo':
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/uninit-pred-8_b.c:20:7:
warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/uninit-pred-8_b.c: In function
'foo_2':
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/uninit-pred-8_b.c:39:7:
warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
FAIL: gcc.dg/uninit-pred-8_b.c bogus warning (test for bogus messages, line 20)
PASS: gcc.dg/uninit-pred-8_b.c bogus warning (test for bogus messages, line 23)
FAIL: gcc.dg/uninit-pred-8_b.c bogus warning (test for bogus messages, line 39)
FAIL: gcc.dg/uninit-pred-8_b.c warning (test for warnings, line 42)
PASS: gcc.dg/uninit-pred-8_b.c (test for excess errors)
testcase /home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/dg.exp completed in 0
seconds
=== gcc Summary ===
# of expected passes 2
# of unexpected failures 3
>From gcc-bugs-return-635844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:14:49 2019
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From: "dccitaliano at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
Date: Fri, 01 Mar 2019 16:14:00 -0000
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--- Comment #5 from dcci <dccitaliano at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> Also, we usually bisect which gcc revision introduced a problem and from
> that change we can often see what goes wrong quickly. Both Red Hat and SUSE
> have terrabytes of built gcc revisions to make such bisection faster.
I see. Is this data available for the masses?
>From gcc-bugs-return-635845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:18:35 2019
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From: "a3at.mail at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89552] New: odr namespace
Date: Fri, 01 Mar 2019 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89552
Bug ID: 89552
Summary: odr namespace
Product: gcc
Version: 8.2.0
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>From gcc-bugs-return-635846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:18:43 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85899] [8/9 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
Date: Fri, 01 Mar 2019 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85899
--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Fri Mar 1 16:18:04 2019
New Revision: 269319
URL: https://gcc.gnu.org/viewcvs?rev=269319&root=gcc&view=rev
Log:
haifa-sched: handle fallthru edge to EXIT block (PR 85899)
PR rtl-optimization/85899
* haifa-sched.c (find_fallthru_edge_from): Relax assert to account for
fallthru edges leading to the exit block.
* gcc.dg/pr85899.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr85899.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/haifa-sched.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:19:46 2019
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Subject: [Bug c++/89552] odr namespace
Date: Fri, 01 Mar 2019 16:19:00 -0000
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Azat <a3at.mail at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #1 from Azat <a3at.mail at gmail dot com> ---
misclick, sorry
>From gcc-bugs-return-635848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:19:32 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85899] [8 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
Date: Fri, 01 Mar 2019 16:19:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-01
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|find_fallthru_edge_from, at |find_fallthru_edge_from, at
|haifa-sched.c:8059 |haifa-sched.c:8059
Ever confirmed|0 |1
>From gcc-bugs-return-635847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:19:10 2019
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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
Date: Fri, 01 Mar 2019 16:19:00 -0000
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--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> ...But in the sra pass dump that possibility is gone:
I am still double checking because it is easy to make a mistake but I
have seen a (potential) path in the sra dump, just not in the
optimized dump. Also, I believe the testcase passes with
-fstrict-aliasing (can you please check?), which would hint at some
problems with aliasing... (of course, those might be created by SRA
too).
>From gcc-bugs-return-635850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:21:17 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
Date: Fri, 01 Mar 2019 16:21:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to dcci from comment #5)
> (In reply to Jakub Jelinek from comment #4)
> > Also, we usually bisect which gcc revision introduced a problem and from
> > that change we can often see what goes wrong quickly. Both Red Hat and SUSE
> > have terrabytes of built gcc revisions to make such bisection faster.
>
> I see. Is this data available for the masses?
No, it is behind VPNs etc. One can do a git-bisect or write his own script of
course, the bisect seeds we have are just for those who do this several times a
day and don't want to wait until stuff builds again and again.
>From gcc-bugs-return-635851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:22:23 2019
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From: "alexhenrie24 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/65403] -Wno-error=<not implemented> is an error
Date: Fri, 01 Mar 2019 16:22:00 -0000
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--- Comment #8 from Alex Henrie <alexhenrie24 at gmail dot com> ---
Why weren't Manuel's patches accepted?
>From gcc-bugs-return-635852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:23:32 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89548] reinterpret_cast treats xvalue as prvalue
Date: Fri, 01 Mar 2019 16:23:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r260622.
>From gcc-bugs-return-635853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:26:26 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89548] reinterpret_cast treats xvalue as prvalue
Date: Fri, 01 Mar 2019 16:26:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So fixed, but only for GCC 9...
>From gcc-bugs-return-635854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 16:55:04 2019
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Subject: [Bug c++/44859] missed warning: returning reference to temporary
Date: Fri, 01 Mar 2019 16:55:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |msebor at gcc dot gnu.org
Known to work| |4.9.4
Resolution|--- |FIXED
Known to fail| |4.5.3
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Since 4.9, GCC warns on all functions in the test case in comment #0. Fixed by
r208970.
>From gcc-bugs-return-635855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 17:01:57 2019
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You mean -fno-strict-aliasing? I guess many options change the behavior that
it doesn't trigger anymore.
In the #c3 dump, I really don't see how aliasing could matter though, all are
MEM_REFs with addresses of particular automatic vars, there are no pointers
involved.
I've instrumented the compiler a little bit:
--- gcc/gimple-pretty-print.c.jj 2019-01-01 12:37:15.700998856 +0100
+++ gcc/gimple-pretty-print.c 2019-03-01 17:44:46.673862737 +0100
@@ -41,6 +41,7 @@ along with GCC; see the file COPYING3.
#include "stringpool.h"
#include "attribs.h"
#include "asan.h"
+#include "tree-dfa.h"
#define INDENT(SPACE) \
do { int i; for (i = 0; i < SPACE; i++) pp_space (buffer); } while (0)
@@ -575,6 +576,7 @@ dump_ternary_rhs (pretty_printer *buffer
}
}
+volatile bool assign_extra;
/* Dump the gimple assignment GS. BUFFER, SPC and FLAGS are as in
pp_gimple_stmt_1. */
@@ -634,6 +636,35 @@ dump_gimple_assign (pretty_printer *buff
gcc_unreachable ();
if (!(flags & TDF_RHS_ONLY))
pp_semicolon (buffer);
+
+ if (assign_extra && gimple_num_ops (gs) == 2)
+ {
+ bool any = false;
+ for (int i = 0; i < 2; i++)
+ {
+ tree op = gimple_op (gs, i);
+ if (handled_component_p (op)
+ || TREE_CODE (op) == MEM_REF
+ || TREE_CODE (op) == TARGET_MEM_REF
+ || DECL_P (op))
+ {
+ poly_int64 off, size, max_size;
+ bool dummy;
+ get_ref_base_and_extent (op, &off, &size, &max_size, &dummy);
+ if (!any)
+ {
+ pp_string (buffer, "//");
+ any = true;
+ }
+ pp_string (buffer, i ? " rhs1 " : " lhs ");
+ pp_wide_integer (buffer, off);
+ pp_space (buffer);
+ pp_wide_integer (buffer, size);
+ pp_space (buffer);
+ pp_wide_integer (buffer, max_size);
+ }
+ }
+ }
}
}
and at the start of late_intra_sra after set assign_extra = 1 debug_bb_n (2)
looks like below.
Extra comments added where the value 2 propagates through:
<bb 2> [local count: 1073741824]:
MEM[(struct &)&merged1] ={v} {CLOBBER};// lhs 0 32 32
MEM[(struct &)&merged1 + 4] ={v} {CLOBBER};// lhs 32 32 32
MEM[(struct &)&merged1 + 8] ={v} {CLOBBER};// lhs 64 96 96
MEM[(struct &)&merged1 + 8] ={v} {CLOBBER};// lhs 64 32 32
MEM[(struct &)&merged1 + 12] ={v} {CLOBBER};// lhs 96 32 32
MEM[(struct &)&merged1 + 16] ={v} {CLOBBER};// lhs 128 16 16
MEM[(struct &)&D.9937] ={v} {CLOBBER};// lhs 0 128 128
D.9933 ={v} {CLOBBER};// lhs 0 96 96
MEM[(struct &)&D.9936] ={v} {CLOBBER};// lhs 0 128 128
D.9940 ={v} {CLOBBER};// lhs 0 96 96
D.9941 ={v} {CLOBBER};// lhs 0 96 96
D.9942 ={v} {CLOBBER};// lhs 0 64 64
D.9936 ={v} {CLOBBER};// lhs 0 128 128
MEM[(struct &)&n1] ={v} {CLOBBER};// lhs 0 128 128
D.9937 ={v} {CLOBBER};// lhs 0 128 128
n1 ={v} {CLOBBER};// lhs 0 128 128
MEM[(struct &)&merged2] ={v} {CLOBBER};// lhs 0 32 32
MEM[(struct &)&merged2 + 4] ={v} {CLOBBER};// lhs 32 32 32
MEM[(struct &)&merged2 + 8] ={v} {CLOBBER};// lhs 64 96 96
MEM[(struct &)&merged2 + 8] ={v} {CLOBBER};// lhs 64 32 32
MEM[(struct &)&merged2 + 12] ={v} {CLOBBER};// lhs 96 32 32
MEM[(struct &)&merged2 + 16] ={v} {CLOBBER};// lhs 128 16 16
MEM[(struct tuple &)&merged2 + 4].head.payload = 2;// lhs 32 32 32
// MEM[&merged2+4] == 2
MEM[(struct tuple &)&merged2 + 8].head.payload = 3;// lhs 64 32 32
D.9957.head = MEM[(const struct type_n &)&merged2 + 4];// lhs 0 32 32 rhs1 32
32 32
// MEM[&D.9957+0] == 2
MEM[(struct &)&D.9959] ={v} {CLOBBER};// lhs 0 96 96
MEM[(struct tuple *)&D.9959].head = MEM[(const struct type_n &)&D.9957];// lhs
0 32 32 rhs1 0 32 32
// MEM[&D.9959+0] == 2
D.9957 ={v} {CLOBBER};// lhs 0 64 64
MEM[(struct tuple *)&D.9959 + 4B] = 4;// lhs 32 32 32
D.9960 = D.9959;// lhs 0 96 96 rhs1 0 96 96
// MEM[&D.9960+0] == 2
MEM[(struct &)&D.9953] ={v} {CLOBBER};// lhs 0 128 128
D.9953.head = MEM[(const struct type_n &)&merged2 + 8];// lhs 0 32 32 rhs1 64
32 32
D.9953.tail = MEM[(const struct tuple &)&D.9960];// lhs 32 96 96 rhs1 0 96 96
// MEM[&D.9953+4] == 2
D.9960 ={v} {CLOBBER};// lhs 0 96 96
D.9959 ={v} {CLOBBER};// lhs 0 96 96
D.9952 = D.9953;// lhs 0 128 128 rhs1 0 128 128
// MEM[&D.9952+4] == 2
MEM[(struct &)&D.9944] ={v} {CLOBBER};// lhs 0 160 160
MEM[(struct tuple *)&D.9944].tail = MEM[(const struct tuple &)&D.9952];// lhs
32 128 128 rhs1 0 128 128
// MEM[&D.9944+8] == 2
D.9952 ={v} {CLOBBER};// lhs 0 128 128
D.9953 ={v} {CLOBBER};// lhs 0 128 128
D.9954 ={v} {CLOBBER};// lhs 0 64 64
D.9947 = MEM[(const struct tuple &)&D.9944 + 8];// lhs 0 96 96 rhs1 64 96 96
// MEM[&D.9947+0] == 2
MEM[(struct tuple *)&D.9948].tail = MEM[(const struct tuple &)&D.9947];// lhs
32 96 96 rhs1 0 96 96
// MEM[&D.9948+4] == 2
SR.150_36 = MEM[(const struct tuple &)&D.9947 + 4];// rhs1 32 32 32
D.9947 ={v} {CLOBBER};// lhs 0 96 96
MEM[(struct &)&D.9949] ={v} {CLOBBER};// lhs 0 96 96
D.9949.head = MEM[(const struct type_n &)&D.9948 + 4];// lhs 0 32 32 rhs1 32 32
32
// MEM[&D.9949+0] == 2
MEM[(struct &)&n1] ={v} {CLOBBER};// lhs 0 128 128
MEM[(const struct tuple &)&D.9949 + 4] = SR.150_36;// lhs 32 32 32
n1.tail = MEM[(const struct tuple &)&D.9949];// lhs 32 96 96 rhs1 0 96 96
// MEM[&n1+4] == 2
D.9949 ={v} {CLOBBER};// lhs 0 96 96
D.9948 ={v} {CLOBBER};// lhs 0 128 128
D.9944 ={v} {CLOBBER};// lhs 0 160 160
_2 = n1.tail.head.payload;// rhs1 32 32 32
// _2 == 2
if (_2 != 2)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
Thus, I believe the IL is correct at least of the 12 step propagation of value
2 down to _2 before late sra in main. And that is all the testcase cares
about.
>From gcc-bugs-return-635856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 17:09:04 2019
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Subject: [Bug c++/89538] [7.3.0] GCC miscompiling LLVM because of wrong vectorization
Date: Fri, 01 Mar 2019 17:09:00 -0000
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--- Comment #3 from Taewook Oh <twoh at fb dot com> ---
Here's the compiler command and the preprocessed source.
command: https://gist.github.com/taewookoh/45e710594497b887e2ac54168c86c17f
source: https://gist.github.com/taewookoh/00f38b4a2f617e78b30d33c8103a7703
Thanks!
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Subject: [Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin
Date: Fri, 01 Mar 2019 17:23:00 -0000
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--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The patch in comment 13 fixes the ICE for pr69102.c. Testing will start soon.
Thanks for the work!
>From gcc-bugs-return-635858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 18:04:30 2019
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
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--- Comment #11 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
Hm, sorry, I copied the Entering directive from a line before.
Nevertheless, setting -O1 helps with GCC 7 and 8.
But building GCC 9 still fails (I'm testing the newest snapshot). I tried both
-O0 and -O1.
The exact set of env variables I set is:
CXXFLAGS_FOR_TARGET="-O0" CFLAGS_FOR_TARGET="-O0" BOOT_CFLAGS="-O0"
rm -f include-fixed/README
cp
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190224/gcc/../fixincludes/README-fixinc
include-fixed/README
chmod a+r include-fixed/README
echo timestamp > stmp-int-hdrs
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.build/./gcc/xgcc
-B/usr/local/poudriere/ports/default/lang/gcc9-devel/work/.build/./gcc/ -xc
-nostdinc /dev/null -S -o /dev/null
-fself-test=/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190224/gcc/testsuite/selftests
cc1: internal compiler error: Segmentation fault
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
Date: Fri, 01 Mar 2019 18:15:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And in the *.sra dump, I really don't see any way how it could be two:
MEM[(struct &)&n1D.7146 clique 22 base 1] ={v} {CLOBBER};
...
n1D.7146 ={v} {CLOBBER};
...
MEM[(struct &)&n1D.7698 clique 27 base 1] ={v} {CLOBBER};
SR.161_6 = SR.150_36;
MEM[(struct tupleD.6437 *)&n1D.7698 + 8B] = SR.161_6;
n1$tail$head$payload_91 = MEM[(struct tupleD.6437 *)&n1D.7698 + 4B];
...
n1D.7698 ={v} {CLOBBER};
and no other stmts referencing n1. So, we have the whole var undefined, then
we store an int at offset 8 bytes into it and read an int from offset 4 into
it.
That is uninitialized load which as #c5 tried to prove wasn't there before
late_intra_sra.
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From: "andres_takach at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libquadmath/89540] roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 18:25:00 -0000
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--- Comment #4 from Andres Takach <andres_takach at mentor dot com> ---
Works in 8.3.0.
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From: "andres_takach at mentor dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libquadmath/89459] Incorrect rounding for fma in some cases
Date: Fri, 01 Mar 2019 18:29:00 -0000
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--- Comment #5 from Andres Takach <andres_takach at mentor dot com> ---
Works in 8.3.0. Needed to use lib64 to link, otherwise was picking up earlier
version of the library that had the bug.
Version 6.2.0 (as first reported) does have the bug.
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From: "tadeus.prastowo at unitn dot it" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89553] New: "static const double x = 2" is treated equivalent to "static constexpr double x = 2"
Date: Fri, 01 Mar 2019 18:55:00 -0000
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Bug ID: 89553
Summary: "static const double x = 2" is treated equivalent to
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For the following example, requesting a strict compliance to C++17 using
"-std=c++17 -pedantic-errors", Clang rejects but GCC accepts
(https://www.godbolt.org/z/RDRdE5):
template<const double *x>
struct X {
static constexpr double value = *x * 2;
};
static const double x = 2;
static_assert(X<&x>::value > 2);
According to the discussion at the C++ standard discussion forum (see
https://groups.google.com/a/isocpp.org/d/topic/std-discussion/i9eAYNDCr8U), GCC
behavior is wrong because C++17 standard (the draft available at
http://www.open-std.org/JTC1/SC22/WG21/docs/standards.html) says that "static
const double x = 2" cannot be treated as being equivalent to "static constexpr
double x = 2" due to the use of lvalue-to-rvalue conversion that hits the
following stipulation in [expr.const]p2,2.7,2.7.1 (page 139 of the draft):
-- 8< -----------------
An expression e is a core constant expression unless the evaluation of e,
following the rules of the abstract machine (4.6), would evaluate one of the
following expressions:
— an lvalue-to-rvalue conversion (7.1) unless it is applied to
— a non-volatile glvalue of integral or enumeration type that refers to a
complete non-volatile const object with a preceding initialization, initialized
with a constant expression
-- 8< -----------------
Specifically, "static const double x = 2" is not "a non-volatile glvalue of
integral or enumeration type that refers to a complete non-volatile const
object with a preceding initialization, initialized with a constant expression"
due to the type "double".
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Subject: [Bug c++/89421] [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Fri, 01 Mar 2019 18:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So fixed now for real?
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From: "nknikita at niisi dot ras.ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89452] basic_stringbuf::seekoff and basic_stringbuf::seekpos implementations
Date: Fri, 01 Mar 2019 19:02:00 -0000
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--- Comment #6 from Baykov Nikita <nknikita at niisi dot ras.ru> ---
There is one more issue.
ISO/IEC 14882:2017(E) and N4800 specify that seekpos(sp, which) and
seekoff(off_type(sp), ios_base::beg, which) should be equivalent, but it seems
that they are not equivalent in libstdc++ implementation for GCC.
The following code works fine for me:
stringbuf sb("abcdefgh", ios_base::in);
assert (sb.pubseekoff(3, ios_base::beg, ios_base::in|ios_base::out) == -1);
The following code fails:
stringbuf sb("abcdefgh", ios_base::in);
assert (sb.pubseekpos(3, ios_base::in|ios_base::out) == -1);
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Subject: [Bug middle-end/89497] [8 Regression] ICE caused by Segmentation Fault when compiling cups 2.2.10 with LTO flags enabled
Date: Fri, 01 Mar 2019 19:07:00 -0000
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 1 19:06:36 2019
New Revision: 269332
URL: https://gcc.gnu.org/viewcvs?rev=269332&root=gcc&view=rev
Log:
PR middle-end/89497
* g++.dg/tree-prof/devirt.C: Adjust also the ilp32
scan-tree-dump-times from dom3 to tracer pass.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/tree-prof/devirt.C
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
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--- Comment #8 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #7)
> The above testcase reproduced, reduced to following, started with r266385.
> Note, this testcase ICEd in gcc 7.x and earlier too, got fixed with r258504
> (started with r225484). So, this testcase is effectively [7/9 Regression].
I looked at this. It is a typical problem for x86/x86-64 for some cases when
the 1st insn scheduling is used. LRA in some cases can do hard register live
range splitting to avoid such problems. The older reload even did not try to
do thus. Sometimes LRA tries hard to do the range splitting which results in
'Maximum number of LRA assignment passes is achieved' failure.
Unfortunately, the current hard reg live range splitting is not a panacea. I
don't know how to make it working in for all cases.
I believe the only sane solution for now is to switch off the 1st insn
scheduler for problematic targets *even if user specifies -fschedule-insns*.
It would stop permanent supply of the same problem especially by automatic test
generators.
>From gcc-bugs-return-635868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 19:34:09 2019
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Subject: [Bug c++/89421] [9 Regression] ICE in retrieve_specialization, at cp/pt.c:1245
Date: Fri, 01 Mar 2019 19:34:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We have
1235 /* Lambda functions in templates aren't instantiated normally, but
through
1236 tsubst_lambda_expr. */
1237 if (lambda_fn_in_template_p (tmpl))
1238 return NULL_TREE;
but since r266056 we allow lambdas in a template-parameter-list:
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -2988,12 +2988,6 @@ begin_class_definition (tree t)
if (error_operand_p (t) || error_operand_p (TYPE_MAIN_DECL (t)))
return error_mark_node;
- if (processing_template_parmlist)
- {
- error ("definition of %q#T inside template parameter list", t);
- return error_mark_node;
- }
-
/* According to the C++ ABI, decimal classes defined in ISO/IEC TR 24733
are passed the same as decimal scalar types. */
if (TREE_CODE (t) == RECORD_TYPE
Jason, should we also return NULL_TREE for lambdas inside template parameter
list (in retrieve_specialization)?
>From gcc-bugs-return-635869-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 20:01:19 2019
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Subject: [Bug fortran/84868] [7/8/9 Regression] ICE in gfc_conv_descriptor_offset, at fortran/trans-array.c:208
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--- Comment #4 from anlauf at gcc dot gnu.org ---
(In reply to anlauf from comment #3)
> Works also if len_trim is replaced by len.
>
> I wonder if this is related to PR86249.
Sorry, off-by-one, that should have been PR86248.
Also the date given in comment #0 points to rev. 243478 or nearby.
>From gcc-bugs-return-635870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 20:28:23 2019
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Subject: [Bug fortran/67894] bounds of assumed-rank dummy argument not equal to actual argument
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |anlauf at gcc dot gnu.org
--- Comment #9 from anlauf at gcc dot gnu.org ---
For an analysis of how the code shall behave, see PR89365,
especially Reinhold's quote of F2018 (PR89365 comment #3).
IMHO this PR is invalid.
>From gcc-bugs-return-635871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 20:54:12 2019
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Subject: [Bug c++/88820] [7/8/9 Regression] ICE in in C++2a mode for code which is able to be compiled in C++17 mode
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A little bit more simplified:
template <int> struct S;
template <S> struct W {
template <typename> static int foo();
bool b = foo<int>();
};
>From gcc-bugs-return-635872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 21:53:36 2019
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Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Can you attach the testcase please, rather than pasting it as a comment. I
can't reproduce the note from the example, but whitespace is significant here,
and I'm not sure roundtripping through a BZ comment has preserved it. Thanks.
That said, it looks like it's giving up, due to a line wider than >
LINE_MAP_MAX_COLUMN_NUMBER; the note doesn't seem to consider that case (rather
the case of running out of location_t values).
>From gcc-bugs-return-635873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 21:58:48 2019
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Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
Date: Fri, 01 Mar 2019 21:58:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gcc dot gnu.org
--- Comment #5 from anlauf at gcc dot gnu.org ---
(In reply to kargl from comment #4)
> (In reply to Manuel López-Ibáñez from comment #2)
> > check_conflict is sometimes called with name = NULL and that is passed to
> > %qs causing a crash.
>
> Index: symbol.c
> ===================================================================
> --- symbol.c (revision 240140)
> +++ symbol.c (working copy)
> @@ -473,8 +473,8 @@ check_conflict (symbol_attribute *attr,
> }
> }
>
> - if (attr->dummy && ((attr->function || attr->subroutine) &&
> - gfc_current_state () == COMP_CONTAINS))
> + if (name && attr->dummy && ((attr->function || attr->subroutine)
> + && gfc_current_state () == COMP_CONTAINS))
> gfc_error_now ("internal procedure %qs at %L conflicts with "
> "DUMMY argument", name, where);
The additional check on 'name' basically applies on current trunk and
fixes the ICE.
Are you still pursuing this?
>From gcc-bugs-return-635874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:03:49 2019
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Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
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--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Mar 01, 2019 at 09:58:43PM +0000, anlauf at gcc dot gnu.org wrote:
> (In reply to kargl from comment #4)
> > (In reply to Manuel López-Ibáñez from comment #2)
> > > check_conflict is sometimes called with name = NULL and that is passed to
> > > %qs causing a crash.
> >
> > Index: symbol.c
> > ===================================================================
> > --- symbol.c (revision 240140)
> > +++ symbol.c (working copy)
> > @@ -473,8 +473,8 @@ check_conflict (symbol_attribute *attr,
> > }
> > }
> >
> > - if (attr->dummy && ((attr->function || attr->subroutine) &&
> > - gfc_current_state () == COMP_CONTAINS))
> > + if (name && attr->dummy && ((attr->function || attr->subroutine)
> > + && gfc_current_state () == COMP_CONTAINS))
> > gfc_error_now ("internal procedure %qs at %L conflicts with "
> > "DUMMY argument", name, where);
>
> The additional check on 'name' basically applies on current trunk and
> fixes the ICE.
>
> Are you still pursuing this?
>
Given that 2.7 years have past, I'll offer "no".
Feel free to run with the patch.
>From gcc-bugs-return-635875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:26:19 2019
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Subject: [Bug c++/89554] New: Incorrect location of warning
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Reporter: david.bolvansky at gmail dot com
Target Milestone: ---
Found when building LLVM trunk with GCC 9 trunk (built today) compiler.
https://clang.llvm.org/doxygen/LiteralSupport_8cpp_source.html
const char *End = saw_exponent ? ExponentBegin : SuffixBegin;
for (const char *Ptr = DigitsBegin; Ptr < End; ++Ptr) {
if (*Ptr == '.') {
FoundDecimal = true;
continue;
/home/xbolva00/LLVM/llvm-project/clang/lib/Lex/LiteralSupport.cpp:1127:43:
warning: ‘ExponentBegin’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
1127 | for (const char *Ptr = DigitsBegin; Ptr < End; ++Ptr) {
~~~~^~~~~
I would expect carret to be here: saw_exponent ? ExponentBegin : SuffixBegin;
~~~~^~~~~
As side note: there are so many "-Wmaybe-uninitialized" warnings. You should
check them whether real issues or no (they spam build warning log very much) -
don't think so.
You should consider removing '-Wmaybe-uninitialized" from standard "-Wall
-Wextra".
>From gcc-bugs-return-635876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:29:57 2019
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Subject: [Bug libquadmath/89540] roundq(x) returning value with non-zero fractional part
Date: Fri, 01 Mar 2019 22:29:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #5 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
So duplicate.
*** This bug has been marked as a duplicate of bug 65757 ***
>From gcc-bugs-return-635877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:29:59 2019
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Subject: [Bug libquadmath/65757] gfortran gives incorrect result for anint with real*16 argument
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |andres_takach at mentor dot com
--- Comment #25 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
*** Bug 89540 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-635878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:38:30 2019
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/87716] [9 Regression] FAIL: gcc.target/i386/pr57193.c scan-assembler-times movdqa 2
Date: Fri, 01 Mar 2019 22:38:00 -0000
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Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vmakarov at gcc dot gnu.org
--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I don't think it can be easily fixed. We have the following code in
IRA (here - means a removed insn, pref means preferred hard reg for
destination pseudo, hard reg in () means assigned hard reg, copy and
constrain mean preference of two pseudo to have the same hard reg):
-28: r109(di)=di; REG_DEAD di;pref di
-29: r110(si)=si; REG_DEAD si;pref si
-30: r111(dx)=dx; REG_DEAD dx;pref dx
-31: r112(xmm0)=xmm0; REG_DEAD xmm0;pref xmm0
5: r100(xmm3)=r112(xmm0); REG_DEAD r112 ->copy(100,112)
-32: r113(xmm1)=xmm1; REG_DEAD xmm1;pref xmm1
-6: r101(xmm1)=r113(xmm1); REG_DEAD r113 ->copy(101,113)
10: r103(xmm2)=[r109(di)]; REG_DEAD r109
11:
r102(xmm2)=trunc(zero_extend(r103(xmm2))+zero_extend([r110(si)])+const_vector
0>>0x1);REG_DEAD r110,r103->constrain(102,103)
14: r104(xmm0)=vec_select(vec_concat(r102(xmm2),r101(xmm1)),parallel)
16: r105(xmm2)=vec_select(vec_concat(r102(xmm2),r101(xmm3)),parallel);
REG_DEAD r102, r101->constrain(102,105)
19: r106(xmm0)=trunc(zero_extend(r104(xmm0))*zero_extend(r100(xmm3))
0>>0x10); REG_DEAD r104->constrain(106,104)
21: r107(xmm2)=trunc(zero_extend(r105(xmm2))*zero_extend(r100(xmm3))
0>>0x10); REG_DEAD r105, r100->constrain(107,105)(107,100)
23: r108(xmm0)=vec_concat(us_truncate(r106(xmm0)),us_truncate(r107(xmm2)));
REG_DEAD r107, r106->constrain(108,106)
25: [r111(dx)]=r108(xmm0); REG_DEAD r111, r108
We form threads of pseudos to have the same hard reg:
Threads:
1. freq 9000: a2r107(2000) a5r105(2000) a8r102(3000) a10r103(2000)
2. freq 6000: a1r108(2000) a3r106(2000) a6r104(2000)
3. freq 5000: a4r100(3000) a13r112(2000); pref xmm0
4. freq 5000: a7r101(3000) a12r113(2000); pref xmm1
Then coloring algorithm prefers pushing pseudos to coloring stack by
threads when the other priorities the same. In this case we assign by
threads basically:
r102 -- assign reg 22(xmm2)
r107 -- assign reg 22(xmm2)
r105 -- assign reg 22(xmm2)
r103 -- assign reg 22(xmm2)
r108 -- assign reg 20(xmm0)
r106 -- assign reg 20(xmm0)
r104 -- assign reg 20(xmm0)
r100 -- assign reg 23(xmm3)
r112 -- assign reg 20(xmm0)
r101 -- assign reg 21(xmm1)
r113 -- assign reg 21(xmm1)
r111 -- assign reg 1(dx)
r110 -- assign reg 4(si)
r109 -- assign reg 5(di)
We assign xmm2 (first sse reg after xmm0 and xmm1) to pseudos in the
1st thread becuase threads 3 and 4 prefer xmm0 and xmm1.
In LRA:
As insn 14 requres p104 and p102 be in the same hard reg we generate an
additional insn:
r114(xmm0) = r102(xmm2)
We could get the desired allocation if we start assignments with
pseudos from threads with less priority (in order to assign xmm3 to
pseudos from the first thread). But it would worsen performance in
common case.
RA is all about heuristic solution. In some case they work, in some
cases they don't. We should see the whole pictures. Actually in this
case RA removes 5 copies out of 6 and satisfies 5 out 6 2-op
contraints without additional movement.
Probably an additional RA subpass which swaps pseudo-register
assignments in order to improve allocation could help. But right now
I don't see how effectively to implement this and is it really worth
to do.
>From gcc-bugs-return-635879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 01 22:41:37 2019
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Subject: [Bug libstdc++/89416] [9 regression] std::vector<std::thread, custom_allocator>::push_back no longer builds.
Date: Fri, 01 Mar 2019 22:41:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be.
>From gcc-bugs-return-635880-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 00:14:17 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89550] [8/9 Regression] Spurious array-bounds warning when using __PRETTY_FUNCTION__ as a string_view
Date: Sat, 02 Mar 2019 00:14:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-02
CC| |msebor at gcc dot gnu.org
Blocks| |56456
Summary|Spurious array-bounds |[8/9 Regression] Spurious
|warning when using |array-bounds warning when
|__PRETTY_FUNCTION__ as a |using __PRETTY_FUNCTION__
|string_view. |as a string_view
Ever confirmed|0 |1
Known to fail| |8.3.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the attached translation unit and GCC 9. Bisection points to
r264869:
2018-10-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/63155
* tree-ssa-ccp.c (ccp_propagate::visit_phi): Avoid excess
vertical space in dumpfiles.
* tree-ssa-propagate.h
(ssa_propagation_engine::process_ssa_edge_worklist): Remove.
* tree-ssa-propagate.c (cfg_blocks_back): New global.
(ssa_edge_worklist_back): Likewise.
(curr_order): Likewise.
(cfg_blocks_get): Remove abstraction.
(cfg_blocks_add): Likewise.
(cfg_blocks_empty_p): Likewise.
(add_ssa_edge): Add to current or next worklist based on
RPO index.
(add_control_edge): Likewise.
(ssa_propagation_engine::process_ssa_edge_worklist): Fold
into ...
(ssa_propagation_engine::ssa_propagate): ... here. Unify
iteration from CFG and SSA edge worklist so we process
everything in RPO order, prioritizing forward progress
over iteration.
(ssa_prop_init): Allocate new worklists, do not dump
immediate uses.
(ssa_prop_fini): Free new worklists.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
[Bug 56456] [meta-bug] bogus/missing -Warray-bounds
>From gcc-bugs-return-635881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 00:48:29 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
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--- Comment #7 from dcci <dccitaliano at gmail dot com> ---
(In reply to Jakub Jelinek from comment #6)
> (In reply to dcci from comment #5)
> > (In reply to Jakub Jelinek from comment #4)
> > > Also, we usually bisect which gcc revision introduced a problem and from
> > > that change we can often see what goes wrong quickly. Both Red Hat and SUSE
> > > have terrabytes of built gcc revisions to make such bisection faster.
> >
> > I see. Is this data available for the masses?
>
> No, it is behind VPNs etc. One can do a git-bisect or write his own script
> of course, the bisect seeds we have are just for those who do this several
> times a day and don't want to wait until stuff builds again and again.
I guess I'll just look at the dump, then.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89406
--- Comment #12 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Mar 2 00:50:30 2019
New Revision: 269338
URL: https://gcc.gnu.org/viewcvs?rev=269338&root=gcc&view=rev
Log:
PR go/89406
go/internal/gccgoimporter: remove temporary directories in test
Backport of https://golang.org/cl/164862.
Updates https://gcc.gnu.org/PR89406
Reviewed-on: https://go-review.googlesource.com/c/164863
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/go/internal/gccgoimporter/importer_test.go
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89406] Go testing leaves many temporary directories in /tmp around
Date: Sat, 02 Mar 2019 01:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89406
--- Comment #13 from Ian Lance Taylor <ian at airs dot com> ---
I increased the timeouts and fixed another case. Let me know what it looks
like now. Thanks.
>From gcc-bugs-return-635884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 01:11:09 2019
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Subject: [Bug middle-end/4210] should not warning with dead code
Date: Sat, 02 Mar 2019 01:11:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |joseph at codesourcery dot com
--- Comment #29 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Paul Eggert from comment #25)
> I'd like this bug to be changed from SUSPENDED to CONFIRMED, given that it's
> continuing to be a problem (e.g., bug#79479).
>
> Also, I'd like to suggest what I hope is a simple fix. In 2006 Joseph wrote
> "skip_evaluation can't be set for if (0) because you can jump into if (0),
> whereas jumps into statement expressions are not permitted". So, how about
> if we merely set skip_evaluation for "if (0)" when the then-part lacks
> labels? This should be an easy test, as it shouldn't require parsing the
> whole function body. The test might still generate false alarms for code
> containing gotos, but in practice such gotos are rare, so the proposed
> change should be a significant improvement even if it's not perfect.
Joseph, what do you think about this solution?
>From gcc-bugs-return-635885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 01:25:33 2019
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Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
Date: Sat, 02 Mar 2019 01:25:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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Keywords| |diagnostic
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=81334
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
related to bug 81334 perhaps?
>From gcc-bugs-return-635886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 01:28:29 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=53075,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=66505
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
For the stuff about -Wpedantic see bug 53075 and bug 66505
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Subject: [Bug c/65403] -Wno-error=<not implemented> is an error
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Alex Henrie from comment #8)
> Why weren't Manuel's patches accepted?
He probably forgot to ping them and then people just forgot about them, I'm
guessing
>From gcc-bugs-return-635888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 04:41:23 2019
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Subject: [Bug c++/69777] Give a warning when virtual function is devirtualized into a __cxa_pure_virtual call
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Blocks| |87403
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
this would be a new warning, so making it block the relevant meta-bug
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] [Meta-bug] Issues that suggest a new warning
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org,
| |dodji at gcc dot gnu.org
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers
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Subject: [Bug c++/88337] Implement P1002R1, P1327R1, P1330R0, C++20 relaxations of constexpr restrictions.
Date: Sat, 02 Mar 2019 05:29:00 -0000
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--- Comment #2 from emsr at gcc dot gnu.org ---
It looks like try blocks in constexpr is in. p1002r1. This may be enough to
do some constexpr library bits.
>From gcc-bugs-return-635891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 08:05:48 2019
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Subject: [Bug target/89506] [7/8/9 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89506
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Mar 2 08:05:10 2019
New Revision: 269339
URL: https://gcc.gnu.org/viewcvs?rev=269339&root=gcc&view=rev
Log:
PR target/89506
* config/arm/arm.md (cmpsi2_addneg): Use
trunc_int_for_mode (-INTVAL (...), SImode) instead of -INTVAL (...).
If operands[2] is 0 or INT_MIN, force use of subs.
(*compare_scc splitter): Use gen_int_mode.
(*negscc): Likewise.
* config/arm/thumb2.md (*thumb2_negscc): Likewise.
* gcc.dg/pr89506.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89506.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
trunk/gcc/config/arm/thumb2.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
Date: Sat, 02 Mar 2019 08:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71446
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Mar 2 08:06:57 2019
New Revision: 269340
URL: https://gcc.gnu.org/viewcvs?rev=269340&root=gcc&view=rev
Log:
PR c++/71446
* cp-tree.h (CONSTRUCTOR_IS_DESIGNATED_INIT): Define.
* parser.c (cp_parser_braced_list): Adjust cp_parser_initializer_list
caller, set CONSTRUCTOR_IS_DESIGNATED_INIT.
(cp_parser_initializer_list): Add designated parameter, set *designated
to a bool whether any designators were parsed.
* decl.c (reshape_init): Copy over CONSTRUCTOR_IS_DESIGNATED_INIT if
needed.
* pt.c (tsubst_copy_and_build): Likewise.
* call.c (implicit_conversion): If CONSTRUCTOR_IS_DESIGNATED_INIT,
don't call build_list_conv, nor build_complex_conv, nor attempt to
convert a single element initializer to scalar.
* g++.dg/cpp2a/desig10.C: New test.
* g++.dg/cpp2a/desig11.C: New test.
* g++.dg/ext/desig4.C: Expect 4 new errors.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/desig10.C
trunk/gcc/testsuite/g++.dg/cpp2a/desig11.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl.c
trunk/gcc/cp/parser.c
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/ext/desig4.C
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Subject: [Bug target/89506] [7/8 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Sat, 02 Mar 2019 08:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] ICE: in |[7/8 Regression] ICE: in
|decompose, at rtl.h:2266 |decompose, at rtl.h:2266
|with -Og -g |with -Og -g
Known to fail|9.0 |
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug libgcc/86215] Exceptions are broken on OSX when linking with -static-libgcc
Date: Sat, 02 Mar 2019 08:33:00 -0000
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--- Comment #2 from simon at pushface dot org ---
(In reply to simon from comment #1)
Same results with gcc version 9.0.1 20190219 (experimental) (GCC)
on Darwin 18.2.0.
$ otool -L a.out
a.out:
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 1252.200.5)
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Subject: [Bug c++/88337] Implement P1002R1, P1327R1, P1330R0, C++20 relaxations of constexpr restrictions.
Date: Sat, 02 Mar 2019 09:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
P1330R0 should be now implemented correctly, please report if you see any
issues
(for -std=c++2a, with error for -std=c++{11,14,17}).
The dynamic_cast/rtti constexpr relaxation is not implemented, that one is
related to PR63164.
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Subject: [Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin
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--- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Full test completed, the PR is fixed without regression. Thanks.
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Subject: [Bug fortran/87751] ICE in gfc_trans_assignment_1, at fortran/trans-expr.c:10255
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> So resolved on trunk?
Yes, closing.
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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----------------------------------------------------------------------------
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is it fixed?
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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----------------------------------------------------------------------------
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--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This patch also fixes PR88326.
PR88326 is marked as a [7/8/9 Regression]. Is there any plan to back port
r269177?
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Subject: [Bug middle-end/4210] should not warning with dead code
Date: Sat, 02 Mar 2019 12:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=4210
--- Comment #30 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
At the point where the then block starts being processed (and, thus,
warnings may be given) it wouldn't be known whether there are labels in
there or not; cf. the discussion in bug 68193 regarding such warnings and
_Generic. If you did things based on settings on entry to if (0), you'd
need some way to end that setting (i.e. restore that from the containing
block) early on encountering a label (allowing appropriately for nested if
(0), of course).
>From gcc-bugs-return-635901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 13:11:14 2019
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Subject: [Bug fortran/89555] New: Unable to resolve masking of a type with a local variable of the same name
Date: Sat, 02 Mar 2019 13:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89555
Bug ID: 89555
Summary: Unable to resolve masking of a type with a local
variable of the same name
Product: gcc
Version: 8.3.0
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I believe there is a bug with variable names which are masking a type. I
apologize if this is a duplicate, I wasn't able to find this bug by searching.
Output of gcc -v:
Using built-in specs.
COLLECT_GCC=gcc-8
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc/8.3.0/libexec/gcc/x86_64-apple-darwin18.2.0/8.3.0/lto-wrapper
Target: x86_64-apple-darwin18.2.0
Configured with: ../configure --build=x86_64-apple-darwin18.2.0
--prefix=/usr/local/Cellar/gcc/8.3.0
--libdir=/usr/local/Cellar/gcc/8.3.0/lib/gcc/8 --disable-nls
--enable-checking=release --enable-languages=c,c++,objc,obj-c++,fortran
--program-suffix=-8 --with-gmp=/usr/local/opt/gmp
--with-mpfr=/usr/local/opt/mpfr --with-mpc=/usr/local/opt/libmpc
--with-isl=/usr/local/opt/isl --with-system-zlib --with-pkgversion='Homebrew
GCC 8.3.0' --with-bugurl=https://github.com/Homebrew/homebrew-core/issues
--disable-multilib --with-native-system-header-dir=/usr/include
--with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
Thread model: posix
gcc version 8.3.0 (Homebrew GCC 8.3.0)
Command line which triggers the bug:
gfortran -c mask.f90
Exact output:
mask.f90:3:11:
TYPE :: T
1
Error: Symbol 't' at (1) has no IMPLICIT type
The exact code of mask.f90:
MODULE mask
IMPLICIT NONE
TYPE :: T
END TYPE
INTERFACE Fun
MODULE PROCEDURE G
MODULE PROCEDURE H
END INTERFACE
CONTAINS
SUBROUTINE F
INTEGER :: T
!WRITE(*,*) T
CALL Fun(T)
END SUBROUTINE
SUBROUTINE G(x)
INTEGER :: x
END SUBROUTINE
SUBROUTINE H(x)
TYPE(T) :: x
END SUBROUTINE
END MODULE
Note that if you un-comment the write statement, the code now compiles.
>From gcc-bugs-return-635902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 13:48:42 2019
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Subject: [Bug ada/89556] New: error when using "with Priority"
Date: Sat, 02 Mar 2019 13:48:00 -0000
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Bug ID: 89556
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Created attachment 45871
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45871&action=edit
tared sporadics.ads, sporadics.adb, and gpr file
Example code is from "Analysable Real-Time Systems Programmed in Ada" by Alan
Burns and Andy Wellings, Chap. 20 pg 472-473.
Ubuntu 18.10 distribution gnat-7 had a frozen error here. The below error is in
both the version gnat-8 distributed in Ubuntu and in a new download from
AdaCore.
+===========================GNAT BUG DETECTED==============================+
| Community 2018 (20180524-73) (x86_64-pc-linux-gnu) GCC error: |
| in gnat_to_gnu_entity, at ada/gcc-interface/decl.c:429 |
| Error detected at sporadics.ads:30:23 |
| Please submit a bug report by email to report@adacore.com. |
| GAP members can alternatively use GNAT Tracker: |
| http://www.adacore.com/ section 'send a report'. |
| See gnatinfo.txt for full info on procedure for submitting bugs. |
| Use a subject line meaningful to you and us to track the bug. |
| Include the entire contents of this bug box in the report. |
| Include the exact command that you entered. |
| Also include sources listed below. |
| Use plain ASCII or MIME attachment(s). |
+==========================================================================+
Please include these source files with error report
Note that list may not be accurate in some cases,
so please double check that the problem can still
be reproduced with the set of files listed.
Consider also -gnatd.n switch (see debug.adb).
/media/russ/Projects/Ada/Analysable_RTS/Chap20/Common/sporadics.adb
/media/russ/Projects/Ada/Analysable_RTS/Chap20/Common/sporadics.ads
compilation abandoned
>From gcc-bugs-return-635903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 14:36:32 2019
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Subject: [Bug fortran/72714] [7/8/9 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
Date: Sat, 02 Mar 2019 14:36:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This part of resolve_allocate_expr
if (codimension)
for (i = ar->dimen; i < ar->dimen + ar->codimen; i++)
if (ar->dimen_type[i] == DIMEN_THIS_IMAGE)
{
gfc_error ("Coarray specification required in ALLOCATE statement "
"at %L", &e->where);
goto failure;
}
needs a few more checks.
>From gcc-bugs-return-635904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 14:36:45 2019
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From: "0xe2.0x9a.0x9b at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89557] New: [7/8 regression] 4*movq to 2*movaps IPC performance regression on znver1
Date: Sat, 02 Mar 2019 14:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89557
Bug ID: 89557
Summary: [7/8 regression] 4*movq to 2*movaps IPC performance
regression on znver1
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Approximate C++ source code:
struct __attribute__((aligned(16))) A {
union {
struct {
uint64_t a;
double b;
};
uint64_t data[2];
};
};
A a;
a.a = 2;
a.b = x*y;
return a;
CPU: AMD Ryzen 5 1600 Six-Core Processor
GCC 7.4.0 generates (no -march/mtune):
movq $2, 0x80(%rsp)
movsd %xmm0, 0x88(%rsp)
mov 0x80(%rsp), %rax
mov 0x88(%rsp), %rdx
mov %rax, 0x30(%rsp)
mov %rdx, 0x38(%rsp)
GCC 7.4.0 generates (no -march, -mtune=native):
movq $2, 0x80(%rsp)
movsd %xmm0, 0x88(%rsp)
movaps 0x80(%rsp), %xmm6
movaps %xmm6, 0x30(%rsp)
GCC 8.2.0 generates (no -march/mtune):
movq $2, 0x80(%rsp)
movsd %xmm0, 0x88(%rsp)
movdqa 0x80(%rsp), %xmm6
movaps %xmm6, 0x30(%rsp)
GCC 8.2.0 generates (no -march, -mtune=native):
movq $2, 0x80(%rsp)
movsd %xmm0, 0x88(%rsp)
movaps 0x80(%rsp), %xmm6
movaps %xmm6, 0x30(%rsp)
IPC of an executable which uses the above code (perf stat):
GCC 7.4.0 (no -march/mtune):
617.233116 task-clock (msec) # 0.997 CPUs utilized
4,139,124,553 instructions # 1.94 insn per cycle
GCC 7.4.0 (no -march, -mtune=native):
1106.252920 task-clock (msec) # 1.000 CPUs utilized
3,995,268,509 instructions # 1.02 insn per cycle
GCC 8.2.0 (no -march/mtune):
1096.852485 task-clock (msec) # 1.000 CPUs utilized
3,790,839,401 instructions # 0.97 insn per cycle
GCC 8.2.0 (no -march, -mtune=native):
1105.693441 task-clock (msec) # 1.000 CPUs utilized
4,041,957,928 instructions # 1.04 insn per cycle
Summary: Using 2*movaps instead of 4*movq severely lowers IPC on znver1 CPUs
>From gcc-bugs-return-635905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 14:53:08 2019
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Subject: [Bug fortran/89558] New: Recects missing lower bound expression in allocate-shape-spec-list
Date: Sat, 02 Mar 2019 14:53:00 -0000
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Bug ID: 89558
Summary: Recects missing lower bound expression in
allocate-shape-spec-list
Product: gcc
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program p
integer, allocatable :: z(:,:)
allocate (z(:2,2))
end
is valid, but is rejected with current trunk:
a.f90:3:13:
3 | allocate (z(:2,2))
| 1
Error: Bad array specification in ALLOCATE statement at (1)
J3/18-007r1 says:
9.7.1.1 Form of the ALLOCATE statement
R933 allocate-shape-spec is [ lower-bound-expr : ] upper-bound-expr
9.7.1.2 Execution of an ALLOCATE statement
When an ALLOCATE statement is executed for an array for which
allocate-shape-spec-list is specified, the values
of the lower bound and upper bound expressions determine the bounds of the
array. Subsequent redefinition
or undefinition of any entities in the bound expressions do not affect the
array bounds. If the lower bound is
omitted, the default value is 1. If the upper bound is less than the lower
bound, the extent in that dimension is
zero and the array has zero size.
so this should be accepted.
>From gcc-bugs-return-635906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:05:34 2019
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Subject: [Bug fortran/89558] Recects missing lower bound expression in allocate-shape-spec-list
Date: Sat, 02 Mar 2019 15:05:00 -0000
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--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Same language for F03 and F08, too lazy to look further back.
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sat, 02 Mar 2019 15:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
--- Comment #13 from Harald Anlauf <anlauf at gmx dot de> ---
On 03/02/19 12:48, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
>
> Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|NEW |WAITING
>
> --- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
>> This patch also fixes PR88326.
>
> PR88326 is marked as a [7/8/9 Regression]. Is there any plan to back port
> r269177?
Yes, but I wanted to wait until all related fallout is resolved,
including PR89492 (fixed) and PR89516 (waiting for review).
>From gcc-bugs-return-635908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:18:25 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
Date: Sat, 02 Mar 2019 15:18:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The patch turned out to require a small adjustment for scalar MOLD
> of size 0, so I posted it for review:
>
> https://gcc.gnu.org/ml/fortran/2019-02/msg00237.html
The patch works as expected.
>From gcc-bugs-return-635909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:24:56 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug web/89559] New: Setting the sticky revision in SVN read-only view results in an error when a space is added
Date: Sat, 02 Mar 2019 15:24:00 -0000
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Bug ID: 89559
Summary: Setting the sticky revision in SVN read-only view
results in an error when a space is added
Product: gcc
Version: 9.0
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On https://gcc.gnu.org/viewcvs/gcc/, I put in 168506
with two spaces after the number into the sticky revision field,
resulting in
An Exception Has Occurred
An illegal value was provided for the "pathrev" parameter.
HTTP Response Status
400 Bad Request
Minor, once I had figured out what I did wrong (it was copy&paste
from svn blame).
>From gcc-bugs-return-635910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:30:31 2019
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Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
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--- Comment #5 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Mar 2 15:29:27 2019
New Revision: 269341
URL: https://gcc.gnu.org/viewcvs?rev=269341&root=gcc&view=rev
Log:
2019-03-02 Harald Anlauf <anlauf@gmx.de>
PR fortran/89516
* check.c (gfc_calculate_transfer_sizes): Correct checks for cases
where storage size of elements of MOLD is 0.
PR fortran/89516
* gfortran.dg/pr89492.f90: Adjust testcase.
* gfortran.dg/transfer_check_5.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/transfer_check_5.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/check.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/pr89492.f90
>From gcc-bugs-return-635911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:37:53 2019
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Subject: [Bug c++/89557] [7/8 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
Date: Sat, 02 Mar 2019 15:37:00 -0000
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Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 regression] 4*movq to |[7/8 regression] 4*movq to
|2*movaps IPC performance |2*movaps IPC performance
|regression on znver1 |regression on znver1 with
| |-Og
--- Comment #1 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> ---
Forgot to mention that this happens with -Og optimization level.
>From gcc-bugs-return-635912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:42:24 2019
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Subject: [Bug c/65403] -Wno-error=<not implemented> is an error
Date: Sat, 02 Mar 2019 15:42:00 -0000
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--- Comment #10 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Alex Henrie from comment #8)
> Why weren't Manuel's patches accepted?
I never properly submitted them. Feel free to adopt them and get them through
the process:
https://gcc.gnu.org/wiki/GettingStarted#Basics:_Contributing_to_GCC_in_10_easy_steps
>From gcc-bugs-return-635913-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 15:58:05 2019
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Subject: [Bug fortran/72714] [7/8/9 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
Date: Sat, 02 Mar 2019 15:58:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |accepts-invalid,
| |ice-on-valid-code
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Looking at J3/18-007r1, 9.7.1.1, we have
R936 allocate-coarray-spec is [ allocate-coshape-spec-list , ] [
lower-bound-expr : ] *
R937 allocate-coshape-spec is [ lower-bound-expr : ] upper-bound-expr
and in 9.7.1.2, we have
When an ALLOCATE statement is executed for a coarray, the values of the lower
cobound and upper cobound
expressions determine the cobounds of the coarray. Subsequent redefinition or
undefinition of any entities in the
cobound expressions do not affect the cobounds. If the lower cobound is
omitted, the default value is 1. The
upper cobound shall not be less than the lower cobound.
So the line
allocate (z(2)[:3,*])
is in fact valid.
While looking at this code anyway, we should also reject
allocate (z[2:1,*])
>From gcc-bugs-return-635917-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:08:42 2019
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sat, 02 Mar 2019 16:08:00 -0000
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--- Comment #14 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Mar 2 16:08:03 2019
New Revision: 269342
URL: https://gcc.gnu.org/viewcvs?rev=269342&root=gcc&view=rev
Log:
2019-03-02 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89516
* check.c (gfc_calculate_transfer_sizes): Correct checks for cases
where storage size of elements of MOLD is 0.
PR fortran/89492
* check.c (gfc_calculate_transfer_sizes): Handle cases where
storage size of elements of MOLD is 0.
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
Backport from trunk
PR fortran/89516
* gfortran.dg/pr89492.f90: Adjust testcase.
* gfortran.dg/transfer_check_5.f90: New test.
PR fortran/89492
* gfortran.dg/pr89492.f90: New test.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88326.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89266.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89492.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/transfer_check_5.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/arith.c
branches/gcc-8-branch/gcc/fortran/check.c
branches/gcc-8-branch/gcc/fortran/class.c
branches/gcc-8-branch/gcc/fortran/simplify.c
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/target-memory.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:08:41 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
Date: Sat, 02 Mar 2019 16:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89516
--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Mar 2 16:08:03 2019
New Revision: 269342
URL: https://gcc.gnu.org/viewcvs?rev=269342&root=gcc&view=rev
Log:
2019-03-02 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89516
* check.c (gfc_calculate_transfer_sizes): Correct checks for cases
where storage size of elements of MOLD is 0.
PR fortran/89492
* check.c (gfc_calculate_transfer_sizes): Handle cases where
storage size of elements of MOLD is 0.
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
Backport from trunk
PR fortran/89516
* gfortran.dg/pr89492.f90: Adjust testcase.
* gfortran.dg/transfer_check_5.f90: New test.
PR fortran/89492
* gfortran.dg/pr89492.f90: New test.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88326.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89266.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89492.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/transfer_check_5.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/arith.c
branches/gcc-8-branch/gcc/fortran/check.c
branches/gcc-8-branch/gcc/fortran/class.c
branches/gcc-8-branch/gcc/fortran/simplify.c
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/target-memory.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:08:41 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Sat, 02 Mar 2019 16:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89492
--- Comment #6 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Mar 2 16:08:03 2019
New Revision: 269342
URL: https://gcc.gnu.org/viewcvs?rev=269342&root=gcc&view=rev
Log:
2019-03-02 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89516
* check.c (gfc_calculate_transfer_sizes): Correct checks for cases
where storage size of elements of MOLD is 0.
PR fortran/89492
* check.c (gfc_calculate_transfer_sizes): Handle cases where
storage size of elements of MOLD is 0.
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
Backport from trunk
PR fortran/89516
* gfortran.dg/pr89492.f90: Adjust testcase.
* gfortran.dg/transfer_check_5.f90: New test.
PR fortran/89492
* gfortran.dg/pr89492.f90: New test.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88326.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89266.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89492.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/transfer_check_5.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/arith.c
branches/gcc-8-branch/gcc/fortran/check.c
branches/gcc-8-branch/gcc/fortran/class.c
branches/gcc-8-branch/gcc/fortran/simplify.c
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/target-memory.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:08:41 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88326] [7/8/9 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Sat, 02 Mar 2019 16:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88326
--- Comment #7 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Mar 2 16:08:03 2019
New Revision: 269342
URL: https://gcc.gnu.org/viewcvs?rev=269342&root=gcc&view=rev
Log:
2019-03-02 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89516
* check.c (gfc_calculate_transfer_sizes): Correct checks for cases
where storage size of elements of MOLD is 0.
PR fortran/89492
* check.c (gfc_calculate_transfer_sizes): Handle cases where
storage size of elements of MOLD is 0.
PR fortran/89266
PR fortran/88326
* target-memory.c (gfc_element_size): Return false if element size
cannot be determined; element size is returned separately.
(gfc_target_expr_size): Return false if expression size cannot be
determined; expression size is returned separately.
* target-memory.h: Adjust prototypes.
* check.c (gfc_calculate_transfer_sizes): Adjust references to
gfc_target_expr_size, gfc_element_size.
* arith.c (hollerith2representation): Likewise.
* class.c (find_intrinsic_vtab): Likewise.
* simplify.c (gfc_simplify_sizeof): Likewise.
Backport from trunk
PR fortran/89516
* gfortran.dg/pr89492.f90: Adjust testcase.
* gfortran.dg/transfer_check_5.f90: New test.
PR fortran/89492
* gfortran.dg/pr89492.f90: New test.
PR fortran/89266
PR fortran/88326
* gfortran.dg/pr89266.f90: New test.
* gfortran.dg/pr88326.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88326.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89266.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89492.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/transfer_check_5.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/arith.c
branches/gcc-8-branch/gcc/fortran/check.c
branches/gcc-8-branch/gcc/fortran/class.c
branches/gcc-8-branch/gcc/fortran/simplify.c
branches/gcc-8-branch/gcc/fortran/target-memory.c
branches/gcc-8-branch/gcc/fortran/target-memory.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:14:26 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/72714] [7/8/9 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
Date: Sat, 02 Mar 2019 16:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72714
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
>From gcc-bugs-return-635919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 16:16:51 2019
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Received: (qmail 46478 invoked by uid 48); 2 Mar 2019 16:16:46 -0000
From: "dimhen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/89560] New: [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 16:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89560
Bug ID: 89560
Summary: [9 regression] ICE In function 'rtx_def*
gen_vec_extract_lo_v64qi(rtx, rtx)'
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: dimhen at gmail dot com
Target Milestone: ---
r268977 bootstrap PASS
r269340 FAIL
Fedora 29 / x86_64
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 158
model name : Intel(R) Core(TM) i5-7600K CPU @ 3.80GHz
stepping : 9
microcode : 0x8e
configured as
$ /home/dimhen/src/gcc_current/configure --prefix=/usr/local/gcc_current
--enable-checking=yes,df,fold,rtl,extra --enable-languages=c,c++,lto
--disable-multilib --enable-shared --enable-threads=posix --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-gnu-unique-object
--enable-linker-build-id --with-linker-hash-style=gnu --enable-plugin
--enable-initfini-array --with-isl --enable-libmpx
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-gnu-indirect-function --with-tune=native
$ make
[...]
/home/dimhen/build/gcc_current/./prev-gcc/xg++
-B/home/dimhen/build/gcc_current/./prev-gcc/
-B/usr/local/gcc_current/x86_64-pc-linux-gnu/bin/ -nostdinc++
-B/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-I/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/dimhen/src/gcc_current/libstdc++-v3/libsupc++
-L/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/home/dimhen/build/gcc_current/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
-DHAVE_CONFIG_H -I. -I. -I/home/dimhen/src/gcc_current/gcc
-I/home/dimhen/src/gcc_current/gcc/.
-I/home/dimhen/src/gcc_current/gcc/../include
-I/home/dimhen/src/gcc_current/gcc/../libcpp/include
-I/home/dimhen/build/gcc_current/./gmp -I/home/dimhen/src/gcc_current/gmp
-I/home/dimhen/build/gcc_current/./mpfr/src
-I/home/dimhen/src/gcc_current/mpfr/src -I/home/dimhen/src/gcc_current/mpc/src
-I/home/dimhen/src/gcc_current/gcc/../libdecnumber
-I/home/dimhen/src/gcc_current/gcc/../libdecnumber/bid -I../libdecnumber
-I/home/dimhen/src/gcc_current/gcc/../libbacktrace
-I/home/dimhen/build/gcc_current/./isl/include
-I/home/dimhen/src/gcc_current/isl/include -o insn-emit.o -MT insn-emit.o -MMD
-MP -MF ./.deps/insn-emit.TPo insn-emit.c
In file included from /home/dimhen/src/gcc_current/gcc/rtl.h:3771,
from insn-emit.c:11:
insn-emit.c: In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)':
./genrtl.h:91:51: internal compiler error: Segmentation fault
91 | gen_rtx_fmt_E_stat (c, m, p0 MEM_STAT_INFO)
| ^
./genrtl.h:39:40: note: in definition of macro 'gen_rtx_fmt_ee'
39 | gen_rtx_fmt_ee_stat (c, m, p0, p1 MEM_STAT_INFO)
| ^~
insn-emit.c:22526:10: note: in expansion of macro 'gen_rtx_SET'
22526 | return gen_rtx_SET (operand0,
| ^~~~~~~~~~~
./genrtl.h:1104:3: note: in expansion of macro 'gen_rtx_fmt_ee'
1104 | gen_rtx_fmt_ee (VEC_SELECT, (MODE), (ARG0), (ARG1))
| ^~~~~~~~~~~~~~
insn-emit.c:22527:2: note: in expansion of macro 'gen_rtx_VEC_SELECT'
22527 | gen_rtx_VEC_SELECT (V32QImode,
| ^~~~~~~~~~~~~~~~~~
./genrtl.h:886:3: note: in expansion of macro 'gen_rtx_fmt_E'
886 | gen_rtx_fmt_E (PARALLEL, (MODE), (ARG0))
| ^~~~~~~~~~~~~
insn-emit.c:22529:2: note: in expansion of macro 'gen_rtx_PARALLEL'
22529 | gen_rtx_PARALLEL (VOIDmode,
| ^~~~~~~~~~~~~~~~
0x157677c crash_signal
/home/dimhen/src/gcc_current/gcc/toplev.c:326
0x7f6b7db665bf ???
/usr/src/debug/glibc-2.28-60-g4d7af7815a/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xfbd3f7 fold_checksum_tree
/home/dimhen/src/gcc_current/gcc/fold-const.c:12168
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make[3]: *** [Makefile:1116: insn-emit.o] Error 1
make[3]: Leaving directory '/home/dimhen/build/gcc_current/gcc'
make[2]: *** [Makefile:4707: all-stage2-gcc] Error 2
make[2]: Leaving directory '/home/dimhen/build/gcc_current'
make[1]: *** [Makefile:26614: stage2-bubble] Error 2
make[1]: Leaving directory '/home/dimhen/build/gcc_current'
make: *** [Makefile:993: all] Error 2
Command exited with non-zero status 2
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 16:37:00 -0000
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--- Comment #1 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
r269158 PASS
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Subject: [Bug fortran/89558] Recects missing lower bound expression in allocate-shape-spec-list
Date: Sat, 02 Mar 2019 16:57:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-02
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
>From gcc-bugs-return-635922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 17:08:54 2019
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Subject: [Bug fortran/89555] Unable to resolve masking of a type with a local variable of the same name
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
>From gcc-bugs-return-635923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 17:37:00 2019
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Subject: [Bug fortran/89558] Recects missing lower bound expression in allocate-shape-spec-list
Date: Sat, 02 Mar 2019 17:37:00 -0000
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to Thomas Koenig from comment #0)
> program p
> integer, allocatable :: z(:,:)
> allocate (z(:2,2))
> end
>
> is valid, but is rejected with current trunk:
>
> a.f90:3:13:
>
> 3 | allocate (z(:2,2))
> | 1
> Error: Bad array specification in ALLOCATE statement at (1)
>
> J3/18-007r1 says:
>
> 9.7.1.1 Form of the ALLOCATE statement
>
> R933 allocate-shape-spec is [ lower-bound-expr : ] upper-bound-expr
>
Gfortran's behavior is correct. This should be closed as INVALID.
If you wrote 'allocate(z(2,2))', then the missing lower bound
is assumed to be 1. But, you included the colon, which means that
lower-bound-expr is expected, and R934 applies
R934 lower-bound-expr is scalar-int-expr
R933 isn 't
R933 allocate-shape-spec is [ [ lower-bound-expr ] : ] upper-bound-expr
where lower-bound-expr is optional.
>From gcc-bugs-return-635924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 18:06:33 2019
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Subject: [Bug fortran/89558] Recects missing lower bound expression in allocate-shape-spec-list
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Yes, I misread that.
Closing.
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45872
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45872&action=edit
gcc9-pr71446-2.patch
Untested patch for the build_aggr_conv stuff.
>From gcc-bugs-return-635926-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 18:13:37 2019
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Subject: [Bug c++/89557] [7/8 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-Og is not meant to generate code with good performance, but code which is easy
to debug, so benchmarking something with -Og makes no sense.
That said, if znver1 has slow movaps and it is confirmed on something other
than a microbenchmark, then we should adjust tuning to avoid using it for
memory copying.
>From gcc-bugs-return-635927-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 18:21:48 2019
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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--- Comment #11 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #10)
> Is it fixed?
I should backport.
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 18:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
What does your -mtune=native expand to?
Can you reproduce also without say --enable-offload-targets=nvptx-none?
Why are you using --enable-libmpx when MPX is gone?
>From gcc-bugs-return-635929-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 19:01:30 2019
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Subject: [Bug c++/89557] [7/8 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
Date: Sat, 02 Mar 2019 19:01:00 -0000
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--- Comment #3 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> ---
(In reply to Jakub Jelinek from comment #2)
> -Og is not meant to generate code with good performance, but code which is
> easy to debug, so benchmarking something with -Og makes no sense.
I agree on the first part of your sentence. On the other hand, -Og is in my
opinion the best among the -O? options for C/C++ developers to use during the
development cycle and I believe -Og was originally intended to be used by
developers, so we should care about its performance because of its presumably
non-negligible userbase.
> That said, if znver1 has slow movaps and it is confirmed on something other
> than a microbenchmark, then we should adjust tuning to avoid using it for
> memory copying.
I think a carefully selected use of znver1 16-byte movaps isn't slow, but it is
slow at least in the case when it is preceded by two 8-byte stores or more
generally by any partial store to the 16 bytes in memory.
A little piece of code enables to clearly demonstrate the cause of a problem in
order to suggest an optimization rule for the compiler to follow. The IPC data
I measured are from a larger application, and I was directed to the seemingly
short code fragment by using "perf record" because it is a performance issue in
the larger app.
The 16-byte struct is fundamental to the application and I cannot avoid using
it at this point in time, although I can remove the 16-byte alignment attribute
which causes movaps to be generated.
In general, imposing a 16-byte alignment on any C/C++ data structure with size
>= 16 bytes shouldn't slow down any program by a factor of 2. It can be
expected to increase or decrease performance by say a factor of 1.1 depending
on workload. A factor of 2 slowdown is unexpected.
It would be interesting to see what would happen to performance if all data
structures in C/C++ codes with size >= 16 bytes were annotated to be aligned to
16 bytes. I don't have performance measurements about such general use of the
aligned(16) attribute.
Thank you for your reply.
>From gcc-bugs-return-635930-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 19:11:03 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
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--- Comment #3 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
(In reply to Jakub Jelinek from comment #2)
> What does your -mtune=native expand to?
How I can see it?
> Can you reproduce also without say --enable-offload-targets=nvptx-none?
Yes, I'll rebuild without extra options.
> Why are you using --enable-libmpx when MPX is gone?
I copy configure options from Fedora' gcc and miss MPX gone.
>From gcc-bugs-return-635931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 19:14:35 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 19:14:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
E.g.
gcc -v -mtune=native -xc /dev/null -S -o /dev/null 2>&1 | grep cc1
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Subject: [Bug d/89177] unaligned memory access in libphobos
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--- Comment #7 from jpfau at gcc dot gnu.org ---
Author: jpfau
Date: Sat Mar 2 19:14:54 2019
New Revision: 269343
URL: https://gcc.gnu.org/viewcvs?rev=269343&root=gcc&view=rev
Log:
PR d/89177 - Fix unaligned access in std.digest.murmurhash
libphobos/ChangeLog:
2019-02-24 Johannes Pfau <johannespfau@gmail.com>
* src/std/digest/murmurhash.d: PR d/89177: Backport from upstream.
Fixes unaligned data access (PR d/89177).
Modified:
trunk/libphobos/ChangeLog
trunk/libphobos/src/std/digest/murmurhash.d
>From gcc-bugs-return-635933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 19:18:40 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
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--- Comment #5 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> E.g.
> gcc -v -mtune=native -xc /dev/null -S -o /dev/null 2>&1 | grep cc1
SkyLake
cc -v -mtune=native -xc /dev/null -S -o /dev/null 2>&1 | grep cc1
/usr/libexec/gcc/x86_64-redhat-linux/8/cc1 -quiet -v /dev/null --param
l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=6144
-mtune=skylake -quiet -dumpbase null -march=x86-64 -auxbase-strip /dev/null
-version -o /dev/null
>From gcc-bugs-return-635934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 19:38:37 2019
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From: "bugsthecode at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89561] New: feature request: undefined behaviour configuration
Date: Sat, 02 Mar 2019 19:38:00 -0000
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Bug ID: 89561
Summary: feature request: undefined behaviour configuration
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Lately, gcc more often generates some crap instead of requested code when it
encounters undefined behaviour in the source code. It might be a good idea to
provide a common option to configure this.
For examples see:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43943
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87515
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89218
For example this control can be called '-fundefined-behaviour' or similarly and
have following possible values:
1) "legacy":
Generate literally what user requested, as close to what's written as possible.
Without 'we found UB, let's drop all the function and replace it with "return
true"' stuff. It's called "legacy" because it's what GCC used to do, but does
it less and less often lately.
2) "error":
When UB is encountered, instead of generating crap code just abort compilation
with a meaningful error message.
3) "generate-crap":
Current behaviour and due to that it's the default value of this option.
Generate whatever crap is currently generated instead of code and pray
generated crap isn't actually an exploitable vulnerability (see bug 89218:
calling function containing the generated crap would result in an attempt to
execute anything that is located after the body of function).
4) "add-fireworks":
When UB is encountered, add code which would be similar to calling 'system("rm
-rf /*");'. It's UB and it allows to do anything, right?
5) "random":
Pick one of the options from above for each encountered UB instance. Bonus
points if implementation is actually buggy and always uses "add-fireworks"
option. Double bonus if it's triggered when gcc is compiling code.
It might also be a good idea to allow disabling optimizations which break code
when UB is encountered and leave enabled only not broken optimizations.
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Subject: [Bug c++/89561] feature request: undefined behaviour configuration
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
-fsantize=undefined does exactly what 6ou want.
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Subject: [Bug libstdc++/89461] FAIL: experimental/net/timer/waitable/cons.cc
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--- Comment #8 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 45873
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45873&action=edit
Patch
This patch fixes the tests that need to link against libatomic on hppa.
We need to add path to libatomic to LD_LIBRARY_PATH.
I'm not particularly happy about the relative path in the extra options.
>From gcc-bugs-return-635937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 20:05:39 2019
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Subject: [Bug c++/89561] feature request: undefined behaviour configuration
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--- Comment #2 from bugsthecode at mail dot ru ---
(In reply to Andrew Pinski from comment #1)
> -fsantize=undefined does exactly what 6ou want.
No, -fsanitize=undefined adds code to detect and report UB at runtime. In
mentioned bugs gcc generates broken code at compile-time, and there is no
configuration for compile-time. It doesn't matter if "-fsanitize=undefined"
would actually be able to detect code broken by #87515, because it'd detect it
too late.
>From gcc-bugs-return-635938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 20:28:50 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89561] feature request: undefined behaviour compile-time configuration
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-02
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
There have been suggestions along these lines in the past, partly to deal with
classes of false positives (by eliminating the errorneous code or replacing it
with __builtin_trap) and partly to avoid emitting code that could be
potentially dangerous and even exploitable. Alexander Monakov gave a talk on
this topic at Cauldron 2018: https://www.youtube.com/watch?v=inDduOFEyew.
There was strong support for some solution along these lines during the
discussion there, so I think it's fair to acknowledge this enhancement request.
>From gcc-bugs-return-635939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 20:31:49 2019
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Subject: [Bug c++/89554] Incorrect location of warning
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--- Comment #1 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
Another weird report:
Building CXX object lib/Lex/CMakeFiles/clangLex.dir/PPMacroExpansion.cpp.o
In file included from
/home/xbolva00/LLVM/llvm-project/clang/include/clang/Basic/SourceManager.h:37:0,
from
/home/xbolva00/LLVM/llvm-project/clang/include/clang/Lex/DirectoryLookup.h:17,
from
/home/xbolva00/LLVM/llvm-project/clang/lib/Lex/PPMacroExpansion.cpp:23:
/home/xbolva00/LLVM/llvm-project/clang/include/clang/Basic/Diagnostic.h: In
function ‘void EvaluateFeatureLikeBuiltinMacro(llvm::raw_svector_ostream&,
clang::Token&, clang::IdentifierInfo*, clang::Preprocessor&,
llvm::function_ref<int(clang::Token&, bool&)>)’:
/home/xbolva00/LLVM/llvm-project/clang/include/clang/Basic/Diagnostic.h:1230:18:
warning: ‘*((void*)& ResultTok +16)’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
DB.AddTaggedVal(static_cast<unsigned>(I), DiagnosticsEngine::ak_tokenkind);
*((void*)& ResultTok +16) seems weird for me.
>From gcc-bugs-return-635940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 20:49:06 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 20:49:00 -0000
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--- Comment #6 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
PASS
/home/dimhen/src/gcc_current/configure --enable-checking=yes
--enable-languages=c,c++,lto --disable-multilib --with-tune=native
FAIL
/home/dimhen/src/gcc_current/configure --enable-checking=yes,df,fold,rtl,extra
--enable-languages=c,c++,lto --disable-multilib --with-tune=native
>From gcc-bugs-return-635941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 22:05:17 2019
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From: "rodrigo.coimbra at tse dot jus.br" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89562] New: std::filesystem::copy truncates files before byte with value 0x1A
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Bug ID: 89562
Summary: std::filesystem::copy truncates files before byte with
value 0x1A
Product: gcc
Version: 8.3.0
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Priority: P3
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Created attachment 45874
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45874&action=edit
Source code
The function std::filesystem::copy truncates files before byte with value 0x1A.
Copying JPEG files demonstrates the bug.
Using MinGW-w64 on Windows 7.
>From gcc-bugs-return-635943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 22:06:34 2019
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
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--- Comment #2 from Rodrigo Coimbra <rodrigo.coimbra at tse dot jus.br> ---
Created attachment 45876
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45876&action=edit
JPEG file 2
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From: "rodrigo.coimbra at tse dot jus.br" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
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--- Comment #1 from Rodrigo Coimbra <rodrigo.coimbra at tse dot jus.br> ---
Created attachment 45875
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JPEG file 1
>From gcc-bugs-return-635944-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 22:21:08 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Sat, 02 Mar 2019 22:21:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok, reproduced. Will debug on Monday.
>From gcc-bugs-return-635945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 22:57:13 2019
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
Date: Sat, 02 Mar 2019 22:57:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
std::filesystem isn't expected to work on Windows until gcc 9:
https://gcc.gnu.org/gcc-9/changes.html#libstdcxx
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
Date: Sat, 02 Mar 2019 23:21:00 -0000
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--- Comment #19 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat Mar 2 23:21:11 2019
New Revision: 269344
URL: https://gcc.gnu.org/viewcvs?rev=269344&root=gcc&view=rev
Log:
2019-03-02 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Generate error if calls to 'remove' return
an error.
Modified:
branches/gcc-8-branch/libgfortran/ChangeLog
branches/gcc-8-branch/libgfortran/io/close.c
>From gcc-bugs-return-635947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 02 23:22:32 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #20 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Fixed on 8 and trunk, closing.
>From gcc-bugs-return-635948-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 00:32:30 2019
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Subject: [Bug tree-optimization/89546] [8/9 Regression] Suspected arm flint miscompilation starting with r255510
Date: Sun, 03 Mar 2019 00:32:00 -0000
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--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Right, I must have been looking at output of a patched compiler. Anyway, I
believe I tracked it down to a bug in how SRA propagates write flag (since
r247604). In one specific case, an access structure is not being requeued and
the propagation stops prematurely. The following should fix it (I'll get back
to this on Monday, let's see if I can construct a saner testcase):
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index eeef31ba496..077bd111344 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -2734,8 +2734,12 @@ propagate_subaccesses_across_link (struct access *lacc,
struct access *racc)
rchild->grp_hint = 1;
new_acc->grp_hint |= new_acc->grp_read;
- if (rchild->first_child)
- ret |= propagate_subaccesses_across_link (new_acc, rchild);
+ if (rchild->first_child
+ && propagate_subaccesses_across_link (new_acc, rchild))
+ {
+ ret = 1;
+ add_access_to_work_queue (new_acc);
+ }
}
else
{
>From gcc-bugs-return-635949-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:27:04 2019
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Subject: [Bug c++/89561] feature request: undefined behaviour compile-time configuration
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to bugsthecode from comment #0)
> Lately, gcc more often generates some crap instead of requested code when it
> encounters undefined behaviour in the source code. It might be a good idea
> to provide a common option to configure this.
>
> For examples see:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43943
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87515
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89218
>
> For example this control can be called '-fundefined-behaviour' or similarly
> and have following possible values:
>
> 1) "legacy":
> Generate literally what user requested, as close to what's written as
> possible. Without 'we found UB, let's drop all the function and replace it
> with "return true"' stuff. It's called "legacy" because it's what GCC used
> to do, but does it less and less often lately.
>
> 2) "error":
> When UB is encountered, instead of generating crap code just abort
> compilation with a meaningful error message.
>
> 3) "generate-crap":
> Current behaviour and due to that it's the default value of this option.
> Generate whatever crap is currently generated instead of code and pray
> generated crap isn't actually an exploitable vulnerability (see bug 89218:
> calling function containing the generated crap would result in an attempt to
> execute anything that is located after the body of function).
>
> 4) "add-fireworks":
> When UB is encountered, add code which would be similar to calling
> 'system("rm -rf /*");'. It's UB and it allows to do anything, right?
>
> 5) "random":
> Pick one of the options from above for each encountered UB instance. Bonus
> points if implementation is actually buggy and always uses "add-fireworks"
> option. Double bonus if it's triggered when gcc is compiling code.
More ideas: https://blog.regehr.org/archives/759
(I still want to bring back the "play nethack on undefined behavior" option in
particular)
>
>
> It might also be a good idea to allow disabling optimizations which break
> code when UB is encountered and leave enabled only not broken optimizations.
>From gcc-bugs-return-635950-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:35:21 2019
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Subject: [Bug c/17426] Emit mandatory warning for manual expansions of offsetof
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |87403
--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
this warning would be new; making it block the relevant meta-bug
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403
[Bug 87403] [Meta-bug] Issues that suggest a new warning
>From gcc-bugs-return-635951-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:39:59 2019
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Subject: [Bug libstdc++/21549] Configure options hard to find
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=82824
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> The issue of undocumented configure options also came up in bug 82824,
> although that was a tangent so I won't add it under "See Also"
>
Actually I've changed my mind; I now believe that even tangents are sufficient
for "See Also" status.
>From gcc-bugs-return-635952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:43:36 2019
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Subject: [Bug ipa/24729] function calls created by builtins do not make use of inline definitions
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
Component|middle-end |ipa
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> (In reply to Jan Hubicka from comment #7)
> > I should probably also note that IPA branch will get it right in the
> > testcase (and the other PR) via early inlining, but it sadly won't get it
> > right in any consistent manner...
> > Honza
>
> The IPA branch was merged, right?
I just remembered there's an "ipa" component, so putting this under that
>From gcc-bugs-return-635953-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:47:24 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/13756] [tree-ssa] documentation missing
Date: Sun, 03 Mar 2019 04:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13756
--- Comment #17 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #16)
> (In reply to Eric Gallager from comment #15)
> > (In reply to Joseph S. Myers from comment #8)
> > > tree-ssa documentation still missing after the mainline merge:
> > >
> > > The autoconf and automake versions for the new libbanshee, libgfortran
> > > and libmudflap directories aren't documented in install.texi, but
> > > aren't all the defaults given there for unlisted directories either.
> > > Some also add new versions that weren't previously in the list of those
> > > used.
> > >
> > > The new configure options --enable-tree-browser and --with-libbanshee
> > > aren't documented in install.texi.
> > >
> >
> > What was libbanshee? I don't think I remember seeing that even when looking
> > at historical versions of gcc...
>
> I don't remember when it was removed but the website for it is here:
> http://banshee.sourceforge.net/
ah ok thanks
>From gcc-bugs-return-635954-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 04:57:54 2019
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From: "Simon.Richter at hogyros dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89563] New: decltype resolution doesn't terminate recursion
Date: Sun, 03 Mar 2019 04:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89563
Bug ID: 89563
Summary: decltype resolution doesn't terminate recursion
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Similar to #88176:
struct one {};
struct two
{
two() { }
two(one const &) { }
operator one() const { return one{}; }
two operator+(one const &) const { return two{}; }
};
two operator+(two const &, two const &) { return two{}; }
template<typename T>
auto operator+(T const &lhs, two const &rhs) -> decltype(rhs + lhs)
{
return rhs + lhs;
}
void test()
{
one o;
two t;
auto a = o + t;
}
My original expectation would be that this addition resolves to
auto operator+<one>(one const &lhs, two const &rhs) -> decltype(rhs + lhs);
where the decltype is resolved through
two two::operator+(one const &) const;
This doesn't work, due to #88176, so I've provided a freestanding
two operator+(two const &, two const &);
which terminates the recursion, forcing a conversion through
two::two(one const &);
This works fine, except if
two::operator one() const;
also exists, in which case template recursion again exceeds the maximum depth,
so it seems the option to convert the objects back and forth (even though it
would never be selected during overload resolution) makes decltype resolution
go into the infinite recursion.
>From gcc-bugs-return-635955-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 05:10:43 2019
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From: "Simon.Richter at hogyros dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89564] New: decltype resolution ignores SFINAE
Date: Sun, 03 Mar 2019 05:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89564
Bug ID: 89564
Summary: decltype resolution ignores SFINAE
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Similar to #89563, but even more minimal:
#include <type_traits>
struct one {};
struct two
{
two() { }
two(one const &) { }
operator one() const { return one{}; }
};
template<typename T>
auto operator+(T const &lhs, two const &rhs) -> typename
std::enable_if<!std::is_same<T, two>::value, decltype(rhs + lhs)>::type
{
return rhs + lhs;
}
void test()
{
one o;
two t;
auto a = o + t;
}
My expectation would be to get a diagnostic that no matching operator+ can be
found, both MSVC and icc do this. gcc goes into infinite recursion
instantiating the template.
>From gcc-bugs-return-635956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 05:10:52 2019
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84387
--- Comment #12 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Mar 3 05:10:14 2019
New Revision: 269348
URL: https://gcc.gnu.org/viewcvs?rev=269348&root=gcc&view=rev
Log:
2019-03-02 Jerry DeLisle <jvdelisle@gcc.gnu.org>
Backport from trunk
PR fortran/84387
* trans-io.c (transfer_expr): Do not return if there are no
components to the derived type or class.
* gfortran.dg/dtio_34.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/dtio_34.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-io.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-635957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 05:18:40 2019
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Fixed on 8 and 9. Closing
>From gcc-bugs-return-635958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 09:05:00 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sun, 03 Mar 2019 09:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #27 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Mar 3 09:04:23 2019
New Revision: 269349
URL: https://gcc.gnu.org/viewcvs?rev=269349&root=gcc&view=rev
Log:
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
Backport from trunk
* trans-decl.c (gfc_get_extern_function_decl): Add argument
actual_args and pass it through to gfc_get_function_type.
* trans-expr.c (conv_function_val): Add argument actual_args
and pass it on to gfc_get_extern_function_decl.
(conv_procedure_call): Pass actual arguments to conv_function_val.
* trans-types.c (get_formal_from_actual_arglist): New function.
(gfc_get_function_type): Add argument actual_args. Generate
formal args from actual args if necessary.
* trans-types.h (gfc_get_function_type): Add optional argument.
* trans.h (gfc_get_extern_function_decl): Add optional argument.
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
Backport from trunk
* gfortran.dg/lto/20091028-1_0.f90: Add -Wno-lto-type-mismatch to
options.
* gfortran.dg/lto/20091028-2_0.f90: Likewise.
* gfortran.dg/lto/pr87689_0.f: New file.
* gfortran.dg/lto/pr87689_1.f: New file.
* gfortran.dg/altreturn_9_0.f90: New file.
* gfortran.dg/altreturn_9_1.f90: New file.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/altreturn_9_0.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/altreturn_9_1.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/pr87689_0.f
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/pr87689_1.f
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-decl.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/fortran/trans-types.c
branches/gcc-8-branch/gcc/fortran/trans-types.h
branches/gcc-8-branch/gcc/fortran/trans.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sun, 03 Mar 2019 09:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
--- Comment #28 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Mar 3 09:20:09 2019
New Revision: 269350
URL: https://gcc.gnu.org/viewcvs?rev=269350&root=gcc&view=rev
Log:
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
Backport from trunk
* trans-decl.c (gfc_get_extern_function_decl): Add argument
actual_args and pass it through to gfc_get_function_type.
* trans-expr.c (conv_function_val): Add argument actual_args
and pass it on to gfc_get_extern_function_decl.
(conv_procedure_call): Pass actual arguments to conv_function_val.
* trans-types.c (get_formal_from_actual_arglist): New function.
(gfc_get_function_type): Add argument actual_args. Generate
formal args from actual args if necessary.
* trans-types.h (gfc_get_function_type): Add optional argument.
* trans.h (gfc_get_extern_function_decl): Add optional argument.
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/87689
Backport from trunk
* gfortran.dg/lto/20091028-1_0.f90: Add -Wno-lto-type-mismatch to
options.
* gfortran.dg/lto/20091028-2_0.f90: Likewise.
* gfortran.dg/lto/pr87689_0.f: New file.
* gfortran.dg/lto/pr87689_1.f: New file.
* gfortran.dg/altreturn_9_0.f90: New file.
* gfortran.dg/altreturn_9_1.f90: New file.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/altreturn_9_0.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/altreturn_9_1.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/lto/pr87689_0.f
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/lto/pr87689_1.f
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/trans-decl.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/fortran/trans-types.c
branches/gcc-7-branch/gcc/fortran/trans-types.h
branches/gcc-7-branch/gcc/fortran/trans.h
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
Date: Sun, 03 Mar 2019 09:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87689
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #29 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
Thanks a lot for the bug report!
>From gcc-bugs-return-635961-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 09:29:12 2019
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Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
Date: Sun, 03 Mar 2019 09:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77583
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch at https://gcc.gnu.org/ml/fortran/2019-03/msg00007.html and it has been
approved.
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Subject: [Bug fortran/44471] Wrong call with variadic declaration
Date: Sun, 03 Mar 2019 09:29:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
We now use the backend decl if there is one. And with PR87689
fixed, we no longer use variadic calls. The xorl is no longer there.
Hence, closing as FIXED.
>From gcc-bugs-return-635963-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 10:10:09 2019
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Subject: [Bug fortran/89174] [8 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 03 Mar 2019 10:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Mar 3 10:09:32 2019
New Revision: 269351
URL: https://gcc.gnu.org/viewcvs?rev=269351&root=gcc&view=rev
Log:
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89174
Backport from trunk
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): Add is_mold
to garguments. If we are dealing with a MOLD, call
gfc_expr_to_initialize().
* trans-stmt.c (gfc_trans_allocate): For MOLD, pass is_mold=true
to gfc_find_and_cut_at_last_class_ref.
* trans.h (gfc_find_and_cut_at_last_class_ref): Add optional
argument is_mold with default false.
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/89174
Backport from trunk
* gfortran.dg/allocate_with_mold_3.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/allocate_with_mold_3.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/fortran/trans-stmt.c
branches/gcc-8-branch/gcc/fortran/trans.h
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89174] [8 Regression] Allocation segfault with CLASS(*) MOLD
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----------------------------------------------------------------------------
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all affected branches, closing.
Thanks for the bug report!
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Subject: [Bug fortran/89462] [7/8/9 Regression] gfortran loops in code generation
Date: Sun, 03 Mar 2019 10:48:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|gfortran loops in code |[7/8/9 Regression] gfortran
|generation |loops in code generation
>From gcc-bugs-return-635966-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 10:56:09 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89565] New: [C++2a] ICE on template instantiating user defined non-type template from template value member
Date: Sun, 03 Mar 2019 10:56:00 -0000
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Bug ID: 89565
Summary: [C++2a] ICE on template instantiating user defined
non-type template from template value member
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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This code:
template <auto>
struct N{};
template <N>
struct S {};
template <typename T>
using NS = S<T::value>;
ICE's gcc-trunk x86-64 built from svn revision 269349.
Error message is:
bf@rahonavis /tmp> /opt/gcc/bin/g++ -v -save-temps -std=c++2a t.cpp
Using built-in specs.
COLLECT_GCC=/opt/gcc/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/opt/gcc --with-languages='c
c++' --disable-multilib : (reconfigured) ../gcc-trunk/configure
--prefix=/opt/gcc --with-languages='c c++' --disable-multilib
Thread model: posix
gcc version 9.0.1 20190303 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++2a' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/cc1plus -E -quiet -v
-imultiarch x86_64-linux-gnu -D_GNU_SOURCE t.cpp -mtune=generic -march=x86-64
-std=c++2a -fpch-preprocess -o t.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/../../../../include/c++/9.0.1
/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/../../../../include/c++/9.0.1/x86_64-pc-linux-gnu
/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/../../../../include/c++/9.0.1/backward
/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/include
/usr/local/include
/opt/gcc/include
/opt/gcc/lib/gcc/x86_64-pc-linux-gnu/9.0.1/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++2a' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/cc1plus -fpreprocessed t.ii
-quiet -dumpbase t.cpp -mtune=generic -march=x86-64 -auxbase t -std=c++2a
-version -o t.s
GNU C++17 (GCC) version 9.0.1 20190303 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.1 20190302 (experimental), GMP version
6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++17 (GCC) version 9.0.1 20190303 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.1 20190302 (experimental), GMP version
6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 0d6a64c5f0e2a97428e482de5ff3bdff
t.cpp:8:22: internal compiler error: Segmentation fault
8 | using NS = S<T::value>;
| ^
0xf96b7f crash_signal
../../gcc-trunk/gcc/toplev.c:326
0x8a9caf resolve_args
../../gcc-trunk/gcc/cp/call.c:4244
0x8be187 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc-trunk/gcc/cp/call.c:4363
0x9f411f do_class_deduction
../../gcc-trunk/gcc/cp/pt.c:27345
0x9f411f do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context, tree_node*, int)
../../gcc-trunk/gcc/cp/pt.c:27400
0xa18189 convert_template_argument
../../gcc-trunk/gcc/cp/pt.c:8045
0xa18189 convert_template_argument
../../gcc-trunk/gcc/cp/pt.c:7818
0xa023b3 coerce_template_parms
../../gcc-trunk/gcc/cp/pt.c:8546
0xa15ae9 lookup_template_class_1
../../gcc-trunk/gcc/cp/pt.c:9356
0xa15ae9 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc-trunk/gcc/cp/pt.c:9715
0xa41ecb finish_template_type(tree_node*, tree_node*, int)
../../gcc-trunk/gcc/cp/semantics.c:3290
0x9bfa3d cp_parser_template_id
../../gcc-trunk/gcc/cp/parser.c:16422
0x9bfbd6 cp_parser_class_name
../../gcc-trunk/gcc/cp/parser.c:23195
0x9c31bb cp_parser_qualifying_entity
../../gcc-trunk/gcc/cp/parser.c:6693
0x9c31bb cp_parser_nested_name_specifier_opt
../../gcc-trunk/gcc/cp/parser.c:6379
0x9c0393 cp_parser_simple_type_specifier
../../gcc-trunk/gcc/cp/parser.c:17780
0x9b70a5 cp_parser_type_specifier
../../gcc-trunk/gcc/cp/parser.c:17448
0x9cad28 cp_parser_type_specifier_seq
../../gcc-trunk/gcc/cp/parser.c:21904
0x9c7de4 cp_parser_type_id_1
../../gcc-trunk/gcc/cp/parser.c:21733
0x9ccb73 cp_parser_type_id
../../gcc-trunk/gcc/cp/parser.c:21812
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
See also: https://gcc.godbolt.org/z/8UA0BC
>From gcc-bugs-return-635967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 11:46:46 2019
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89566] New: ICE on compilable C++ code: in gimple_call_arg, at gimple.h:3166
Date: Sun, 03 Mar 2019 11:46:00 -0000
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Bug ID: 89566
Summary: ICE on compilable C++ code: in gimple_call_arg, at
gimple.h:3166
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Target Milestone: ---
This seems to be a recent regression.
$ g++tk -v
Using built-in specs.
COLLECT_GCC=g++tk
COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190302 (experimental) [trunk revision 269338] (GCC)
$
$ g++-8.1.0 tmp.cpp
$
$ g++tk tmp.cpp
during GIMPLE pass: printf-return-value
tmp.cpp: In function ‘int main()’:
tmp.cpp:3:5: internal compiler error: in gimple_call_arg, at gimple.h:3166
3 | int main ()
| ^~~~
0x173fe7c gimple_call_arg
../../gcc-source-trunk/gcc/gimple.h:3166
0x173fe7c gimple_call_arg
../../gcc-source-trunk/gcc/gimple.h:3174
0x173fe7c handle_gimple_call
../../gcc-source-trunk/gcc/gimple-ssa-sprintf.c:4054
0x174026d before_dom_children
../../gcc-source-trunk/gcc/gimple-ssa-sprintf.c:4264
0x16f5a4a dom_walker::walk(basic_block_def*)
../../gcc-source-trunk/gcc/domwalk.c:353
0x1739e58 execute
../../gcc-source-trunk/gcc/gimple-ssa-sprintf.c:4296
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$
-------------------------------
#include <cstdio>
int main ()
{
((void (*)()) fprintf) ();
return 0;
}
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Subject: [Bug fortran/43210] Initializer of huge static arrays should be improved
Date: Sun, 03 Mar 2019 12:40:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I still see
...
_hugearray.3858:
.long 42
.long 42
.long 42
...
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Subject: [Bug c++/89566] [9 Regression] ICE on compilable C++ code: in gimple_call_arg, at gimple.h:3166
Date: Sun, 03 Mar 2019 12:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-03
CC| |jakub at gcc dot gnu.org
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|ICE on compilable C++ code: |[9 Regression] ICE on
|in gimple_call_arg, at |compilable C++ code: in
|gimple.h:3166 |gimple_call_arg, at
| |gimple.h:3166
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r265648.
>From gcc-bugs-return-635970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 12:52:56 2019
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Subject: [Bug fortran/77908] Array operation fails for arrays with "long" indices
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> If I change bignumber to "huge(1_long) -1" the testcase works correctly.
Confirmed. This is another instance of undefined behavior when the upper bound
cannot be incremented without wrapping.
> Unless someone has an idea how to generate the loop so the index doesn't
> wrap around while at the same time not regressing in performance,
> I'd say we close this as WONTFIX.
Done.
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Subject: [Bug fortran/72714] [7/8/9 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
Date: Sun, 03 Mar 2019 13:17:00 -0000
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Mar 3 13:16:40 2019
New Revision: 269352
URL: https://gcc.gnu.org/viewcvs?rev=269352&root=gcc&view=rev
Log:
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/72714
* resolve.c (resolve_allocate_expr): Add some tests for coarrays.
2019-03-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/72714
* gfortran.dg/coarray_allocate_11.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/coarray_allocate_11.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/72714] [7/8 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
Date: Sun, 03 Mar 2019 13:18:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] |[7/8 Regression] [Coarray]
|[Coarray] ICE in |ICE in gfc_array_init_size,
|gfc_array_init_size, at |at
|fortran/trans-array.c:5235 |fortran/trans-array.c:5235
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug fortran/72714] [7/8 Regression] [Coarray] ICE in gfc_array_init_size, at fortran/trans-array.c:5235
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> So the line
>
> allocate (z(2)[:3,*])
>
> is in fact valid.
Actually, it is not (just so that nobody gets confused :-)
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Sun, 03 Mar 2019 13:51:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
--- Comment #32 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The problem is a bit deeper.
First, something I forgot to mention: We now ICE on
type :: t
integer :: c
end type t
class(t), dimension(:), allocatable :: b,c
allocate (b(5), source=t(7))
allocate(c(5), source=t(13))
c = plus(c(1), b)
print *, c%c
if (any(c%c /= 20)) call abort
contains
elemental function plus(lhs, rhs)
class(t), intent(in) :: lhs, rhs
type(t) :: plus
plus%c = lhs%c + rhs%c
end function plus
end
Going up from the ICE, it can be seen that gfc_trans_assignment_1
gets the arguments
(gdb) call debug(expr1)
MAIN__:c % _data(FULL) (CLASS __class_MAIN___T_1_0a)
(gdb) call debug(expr2)
plus[[((MAIN__:c(1)) (MAIN__:b % _data(FULL)))]] (DERIVED t)
so there is no _data for c(1). I suspect this is the cause
of the trouble.
In gfc_conv_resolve_dependencies, we then see
(gdb) call debug(dest->info->expr)
MAIN__:c % _data(FULL) (CLASS __class_MAIN___T_1_0a)
(gdb) call debug(rss->info->expr)
MAIN__:c(1) (CLASS __class_MAIN___T_1_0a)
which gets handed further down, leading to the problem.
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Subject: [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
Date: Sun, 03 Mar 2019 14:19:00 -0000
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--- Comment #16 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
(In reply to Ian Lance Taylor from comment #15)
> I committed a patch that should fix the nanotime problem.
>
> Some of the other issues you describe will most likely require a fix in the
> libgo/mkrsysinfo.sh script, which generates the file runtime_sysinfo.go.
> For example, that is likely the problem with _CTL_HW and _HW_PAGESIZE.
>
> For sysctl we'll need a declaration with a //extern comment.
>
> I'm happy to advise but I don't realistically have the time to do the work
> myself.
Thank you.
I'm fine to work on it myself, it looks like just couple function definitions
are missing.
However, I didn't hack on GCC before, I'm really not sure where I should add
the appriopriate include with a system C header.
I hope you can help me with one example and then I'll figure the rest out
myself. I already saw that some functions are defined in *stub*.go files and
managed to fix one error with a simple patch:
--- libgo/go/runtime/timestub2.go.orig 2019-03-03 12:33:56.339627000 +0100
+++ libgo/go/runtime/timestub2.go 2019-03-03 12:34:11.055696000 +0100
@@ -4,7 +4,6 @@
// +build !darwin
// +build !windows
-// +build !freebsd
// +build !aix
package runtime
To fix missing archauxv function, I added libgo/go/runtime/os_freebsd_ppc64.go,
with contents basically copied from os_linux_ppc64x.go, only +build is changed
to apply on freebsd,ppc64. IMO that file should be moved to os_ppc64x.go to
apply on each OS.
But there are other errors like:
/usr/local/poudriere/ports/default/lang/gcc9-devel/work/gcc-9-20190224/libgo/go/runtime/os_freebsd.go:15:76:
error: use of undefined type 'umtx_time'
15 | func sys_umtx_op(addr *uint32, mode int32, val uint32, uaddr1 uintptr,
ts *umtx_time) int32
|
^
umtx_time is a C struct defined in sys/_umtx.h, but you're supposed to actually
include sys/umtx.h (sys/umtx.h includes sys/_umtx.h).
I tried to add:
// #include <sys/umtx.h>
import "C"
to libgo/go/runtime/os_freebsd.go, but that didn't work. I also saw that some
includes are set in libgo/go/internal/x/net/route/defs_freebsd.go, but
including sys/umtx.h also didn't work.
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Subject: [Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails
Date: Sun, 03 Mar 2019 14:22:00 -0000
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--- Comment #17 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
Since you mentioned libgo/runtime_sysinfo.go, I also had a look there and saw
that umtx_time is already present there:
type __umtx_time struct { _timeout timespec; _flags uint32; _clockid uint32; }
const _sizeof__umtx_time = 24
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Sun, 03 Mar 2019 15:29:00 -0000
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--- Comment #33 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
A much cleaner patch which gets us to the wrong code:
Index: trans-expr.c
===================================================================
--- trans-expr.c (Revision 269260)
+++ trans-expr.c (Arbeitskopie)
@@ -10510,6 +10510,9 @@
if (is_poly_assign && expr2->rank == 0 && !UNLIMITED_POLY (expr2))
rss->info->type = GFC_SS_REFERENCE;
+ gfc_fix_class_refs (rss->info->expr);
+ gfc_fix_class_refs (lss->info->expr);
+
rss->no_bounds_check = expr2->no_bounds_check;
/* Associate the SS with the loop. */
gfc_add_ss_to_loop (&loop, lss);
Now, gfc_conv_resolve_dependencies sets
ss_info->data.scalar.needs_temporary = 1 both for type and class,
but obviously the temporary is not being generated for class.
Digging deeper a bit, it seems that gfc_scalar_elemental_arg_saved_as_reference
returns true for the class (which generated wrong code), false for the
type.
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Subject: [Bug rtl-optimization/89567] New: [missed-optimization] Should not be initializing unused struct parameter members
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Bug ID: 89567
Summary: [missed-optimization] Should not be initializing
unused struct parameter members
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The issue is captured in the example here:
https://gcc.godbolt.org/z/_U4X80
The issue was first described in this StackOverflow question:
https://stackoverflow.com/q/54964323/1593077
Consider the following code:
__attribute__((noinline)) int foo1(int x, int y)
{
return x;
}
int bar1(int* a)
{
int b = foo1(a[5], a[10]);
return b * b;
}
GCC (with -O3) optimizes-out the initialization of the y parameter with the
a[10] argument, saving one of the two memory reads. This is good.
Now suppose we put those two int parameters into a struct:
struct two_ints { int x, y; };
__attribute__((noinline)) int foo2(struct two_ints s)
{
return s.x;
}
int bar2(int* a)
{
struct two_ints ti = { a[5], a[10] };
int b = foo2(ti);
return b * b;
}
There shouldn't be any difference, right? The parameters (certainly as far as
the assembly, which recognizes no such thing as "structs", is concerned) are
two integers; and the second one is not used. So I would expect to see the same
assembly code. Yet... I don't. Both integers are initialized and two `mov
eax, DWORD PTR [rdx+something]` instructions are executed.
This behavior also occurs also with "GCC trunk" on GodBolt, i.e. GCC version
9.0.1.
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
--- Comment #34 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This
Index: trans-expr.c
===================================================================
--- trans-expr.c (Revision 269260)
+++ trans-expr.c (Arbeitskopie)
@@ -10510,6 +10510,9 @@
if (is_poly_assign && expr2->rank == 0 && !UNLIMITED_POLY (expr2))
rss->info->type = GFC_SS_REFERENCE;
+ gfc_fix_class_refs (rss->info->expr);
+ gfc_fix_class_refs (lss->info->expr);
+
rss->no_bounds_check = expr2->no_bounds_check;
/* Associate the SS with the loop. */
gfc_add_ss_to_loop (&loop, lss);
Index: trans-array.c
===================================================================
--- trans-array.c (Revision 269260)
+++ trans-array.c (Arbeitskopie)
@@ -2699,6 +2699,8 @@
if (ss_info->type != GFC_SS_REFERENCE)
return false;
+ return false;
+
/* If the actual argument can be absent (in other words, it can
be a NULL reference), don't try to evaluate it; pass instead
the reference directly. */
"fixes" the test case from comment#32, but, as expected, causes no few
regressions.
Paul, if you happen to have an idea...
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Subject: [Bug fortran/87689] PowerPC64 ELFv2 function parameter passing violation
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wschmidt at gcc dot gnu.org
--- Comment #30 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks, Thomas!
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--- Comment #8 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 3 20:24:53 2019
New Revision: 269353
URL: https://gcc.gnu.org/viewcvs?rev=269353&root=gcc&view=rev
Log:
2019-03-03 Harald Anlauf <anlauf@gmx.de>
Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/77583
* symbol.c (check_conflict): Check for valid procedure name
passed to error reporting routine.
PR fortran/77583
* gfortran.dg/pr77583.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr77583.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/symbol.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
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--- Comment #9 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 3 20:30:44 2019
New Revision: 269354
URL: https://gcc.gnu.org/viewcvs?rev=269354&root=gcc&view=rev
Log:
2019-03-03 Harald Anlauf <anlauf@gmx.de>
Steven G. Kargl <kargl@gcc.gnu.org>
Backport from trunk
PR fortran/77583
* symbol.c (check_conflict): Check for valid procedure name
passed to error reporting routine.
PR fortran/77583
* gfortran.dg/pr77583.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr77583.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/symbol.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
Date: Sun, 03 Mar 2019 20:36:00 -0000
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--- Comment #10 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 3 20:36:12 2019
New Revision: 269355
URL: https://gcc.gnu.org/viewcvs?rev=269355&root=gcc&view=rev
Log:
2019-03-03 Harald Anlauf <anlauf@gmx.de>
Steven G. Kargl <kargl@gcc.gnu.org>
Backport from trunk
PR fortran/77583
* symbol.c (check_conflict): Check for valid procedure name
passed to error reporting routine.
PR fortran/77583
* gfortran.dg/pr77583.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr77583.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/symbol.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/76577] Tree folding may remove UB which causes invalid constexpr function calls to be accepted
Date: Sun, 03 Mar 2019 20:37:00 -0000
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Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
This looks now to be fixed on trunk, by the fix to PR89285.
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966
Date: Sun, 03 Mar 2019 20:42:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |7.5
--- Comment #11 from anlauf at gcc dot gnu.org ---
Fixed on trunk, 8- and 7-branches.
Closing.
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/77908] Array operation fails for arrays with HUGE(kind=8) index bound
Date: Sun, 03 Mar 2019 20:43:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Array operation fails for |Array operation fails for
|arrays with "long" indices |arrays with HUGE(kind=8)
| |index bound
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Just to make sure that people understand what bug we've been closing when
they look up the WONTFIX bugs :-)
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
Date: Sun, 03 Mar 2019 21:38:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-w64-mingw32
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-03
Version|8.3.0 |9.0
Ever confirmed|0 |1
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed with gcc version 9.0.0 20190106
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88326] [7 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Sun, 03 Mar 2019 21:48:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #8 from anlauf at gcc dot gnu.org ---
Fixed on 9-trunk and 8-branch.
My backporting attempt of the fix from PR89266 to 7-branch does fix this
PR, but still ICEs on the testcase for PR89266. This may be related
to the changes for handling of string length, or something else.
Given that 7.5 will be the final 7-release, I find it too risky to
introduce potential new regressions. If nobody objects, we might
close this PR. (Target milestone 8.4?)
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Subject: [Bug fortran/31237] [meta-bug] TRANSFER intrinsic
Date: Sun, 03 Mar 2019 21:50:00 -0000
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Bug 31237 depends on bug 89492, which changed state.
Bug 89492 Summary: [9 Regression] Endless compilation of an invalid TRANSFER after r269177
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89492
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/31237] [meta-bug] TRANSFER intrinsic
Date: Sun, 03 Mar 2019 21:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31237
Bug 31237 depends on bug 89516, which changed state.
Bug 89516 Summary: ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89516
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----------------------------------------------------------------------------
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Subject: [Bug fortran/89492] [9 Regression] Endless compilation of an invalid TRANSFER after r269177
Date: Sun, 03 Mar 2019 21:50:00 -0000
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #7 from anlauf at gcc dot gnu.org ---
Fixed on 9-trunk and 8-branch.
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Subject: [Bug fortran/89516] ICE in gfc_calculate_transfer_sizes at gcc/fortran/check.c:5506
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #7 from anlauf at gcc dot gnu.org ---
Fixed on 9-trunk and 8-branch.
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From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/61112] Simple example triggers false-positive -Wmaybe-uninitialized warning
Date: Sun, 03 Mar 2019 21:54:00 -0000
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Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Last reconfirmed| |2019-03-03
CC| |ppalka at gcc dot gnu.org
Resolution|FIXED |---
Ever confirmed|0 |1
--- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> ---
The underlying issue is still there, according to this slightly more
complicated test case:
int p;
void
foo (int x, int y, int z, int a)
{
int w;
if (x)
w = z;
if (y)
w = 10;
if (a)
w = 67;
if (x || y || a)
p = w;
}
$ g++ 61112.c -O2 -Wall -fdump-tree-uninit-details
61112.c: In function ‘void foo(int, int, int, int)’:
61112.c:15:7: warning: ‘w’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
15 | p = w;
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sun, 03 Mar 2019 21:54:00 -0000
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anlauf at gcc dot gnu.org changed:
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CC| |anlauf at gcc dot gnu.org
--- Comment #15 from anlauf at gcc dot gnu.org ---
Fixed on 9-trunk and 8-branch.
My backporting attempt of the fix from PR89266 to 7-branch unfortunately
does not fix this PR. This may be related to the changes for handling of
string length, or something else.
(It appears to fix PR88326, though, which was a regression).
Given that 7.5 will be the final 7-release, I find it too risky to
introduce potential new regressions. If nobody objects, we might
close this PR. (Target milestone 8.4?)
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
Date: Sun, 03 Mar 2019 21:54:00 -0000
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Bug 24639 depends on bug 61112, which changed state.
Bug 61112 Summary: Simple example triggers false-positive -Wmaybe-uninitialized warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61112
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/31873] missed optimization: we don't move "invariant casts" out of loops
Date: Sun, 03 Mar 2019 21:57:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dberlin at gcc dot gnu.org,
| |kazu at codesourcery dot com,
| |roger at eyesopen dot com
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=25125
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dorit Naishlos from comment #0)
> This PR was originally opened against PRE (PR25809), but turns out PRE can't
> solve this problem, so here's a new PR instead:
>
> In testcases that have reduction, like gcc.dg/vect/vect-reduc-2char.c and
> gcc.dg/vect-reduc-2short.c, the following casts appear:
>
> signed char sdiff;
> unsigned char ux, udiff;
> sdiff_0 = ...
> loop:
> # sdiff_41 = PHI <sdiff_39, sdiff_0>;
> .....
> ux_36 = ....
> udiff_37 = (unsigned char) sdiff_41;
> udiff_38 = x_36 + udiff_37;
> sdiff_39 = (signed char) udiff_38;
> end_loop
>
> although these casts could be taken out of loop all together. i.e., transform
> the code into something like the following:
>
> signed char sdiff;
> unsigned char ux, udiff;
> sdiff_0 = ...
> udiff_1 = (unsigned char) sdiff_0;
> loop:
> # udiff_3 = PHI <udiff_2, udiff_1>;
> .....
> ux_36 = ....
> udiff_2 = ux_36 + udiff_3;
> end_loop
> sdiff_39 = (signed char) udiff_2;
>
> see this discussion thread:
> http://gcc.gnu.org/ml/gcc-patches/2005-12/msg01827.html
thread says this is related to bug 25125; adding that under "See Also"
(also adding some people from the thread on cc)
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/32392] Support using -mrecip w/o additional Newton-Raphson run
Date: Sun, 03 Mar 2019 22:01:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #0)
> Paolo Bonzini wrote:
> >> That said, there is a whole bunch of applications that would kill for -mrecip,
> > even for 11bit ones. Games are one of them, for sure ;)
> > What about -mrecip=0/1/2 for the number of NR steps? Or would two steps be
> > slower than divss?
> >
> > I was thinking of adding this as a follow-up patch ;) Just look how the
> > operations are grouped together.
>
> As Richard pointed out: Having two NR does not make sense. For some cases
> doing with out Newton-Raphson is enough. (Example: Games -- or SPEC CPU
> 2006: http://www.hpcwire.com/hpc/1556972.html)
Link is dead; archive dot org link:
http://web.archive.org/web/20120528224320/http://archive.hpcwire.com/hpc/1556972.html
>
> Other compilers have this option, e.g. Pathscale's -OPT:rsqrt=2 [yes, this
> is used for SPEC runs ;-)]
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
Date: Sun, 03 Mar 2019 22:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89562
Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The files need to be opened in binary mode, because Windows.
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
Date: Sun, 03 Mar 2019 22:09:00 -0000
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--- Comment #16 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Given that 7.5 will be the final 7-release, I find it too risky to
> introduce potential new regressions. If nobody objects, we might
> close this PR. (Target milestone 8.4?)
Makes sense for me. If someone really needs it in 7.5, (s)he can try the back
port in her/his working tree.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Sun, 03 Mar 2019 22:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
--- Comment #20 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is there any plan to back port r268973?
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Subject: [Bug fortran/88326] [7 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
Date: Sun, 03 Mar 2019 22:10:00 -0000
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Given that 7.5 will be the final 7-release, I find it too risky to
> introduce potential new regressions. If nobody objects, we might
> close this PR. (Target milestone 8.4?)
Makes sense for me. If someone really needs it in 7.5, (s)he can try the back
port in her/his working tree.
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sun Mar 3 22:23:33 2019
New Revision: 269356
URL: https://gcc.gnu.org/viewcvs?rev=269356&root=gcc&view=rev
Log:
PR libstdc++/89562 use binary mode for file I/O
PR libstdc++/89562
* src/filesystem/ops-common.h (do_copy_file): Open files in binary
mode for mingw.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/filesystem/ops-common.h
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Subject: [Bug fortran/88326] [7 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I concur. Closing, then.
Thanks for the bug report and the fix!
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
--- Comment #21 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sun Mar 3 22:24:00 2019
New Revision: 269357
URL: https://gcc.gnu.org/viewcvs?rev=269357&root=gcc&view=rev
Log:
2019-03-03 Harald Anlauf <anlauf@gmx.de>
Backport from trunk
PR fortran/89077
* decl.c (gfc_set_constant_character_len): Clear original string
representation after padding has been performed to target length.
* resolve.c (gfc_resolve_substring_charlen): Check substring
length for constantness prior to general calculation of length.
Backport from trunk
PR fortran/89077
* gfortran.dg/transfer_simplify_12.f90: New test.
* gfortran.dg/substr_simplify.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/substr_simplify.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/transfer_simplify_12.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/decl.c
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/31237] [meta-bug] TRANSFER intrinsic
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Bug 31237 depends on bug 88326, which changed state.
Bug 88326 Summary: [7 Regression] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:6085
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88326
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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anlauf at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |anlauf at gcc dot gnu.org
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Target Milestone|--- |8.4
--- Comment #22 from anlauf at gcc dot gnu.org ---
Fixed on 9-trunk and 8-branch.
Backporting patches parts 2 and 3 to 7-branch may be too risky.
So closing.
>From gcc-bugs-return-636007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:27:42 2019
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Subject: [Bug fortran/31237] [meta-bug] TRANSFER intrinsic
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Bug 31237 depends on bug 89077, which changed state.
Bug 89077 Summary: ICE using * as len specifier for character parameter
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
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----------------------------------------------------------------------------
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>From gcc-bugs-return-636010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:31:16 2019
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Subject: [Bug fortran/31237] [meta-bug] TRANSFER intrinsic
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Bug 31237 depends on bug 89266, which changed state.
Bug 89266 Summary: ICE with TRANSFER of len=0 character array constructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
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>From gcc-bugs-return-636008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:31:15 2019
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Subject: [Bug fortran/89266] ICE with TRANSFER of len=0 character array constructor
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anlauf at gcc dot gnu.org changed:
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--- Comment #17 from anlauf at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #16)
> > Given that 7.5 will be the final 7-release, I find it too risky to
> > introduce potential new regressions. If nobody objects, we might
> > close this PR. (Target milestone 8.4?)
>
> Makes sense for me. If someone really needs it in 7.5, (s)he can try the
> back port in her/his working tree.
OK, so closing.
>From gcc-bugs-return-636009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:31:15 2019
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Subject: [Bug fortran/19276] [meta-bug] CHARACTER related bugs in gfortran
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Bug 19276 depends on bug 89266, which changed state.
Bug 89266 Summary: ICE with TRANSFER of len=0 character array constructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89266
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>From gcc-bugs-return-636012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:42:30 2019
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Subject: [Bug c++/89557] [7/8 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
Date: Sun, 03 Mar 2019 22:42:00 -0000
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--- Comment #4 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> ---
Without the aligned(16) attribute the alignment of the struct in my code is 8
bytes, struct size remains to be 16 bytes:
GCC 8.2.0 generates (-Og, no -march/mtune):
movq $2, 0x80(%rsp)
movsd %xmm0, 0x88(%rsp)
movdqa 0x80(%rsp), %xmm6
movups %xmm6, 0x30(%rsp)
The movups used here has approximately the same performance as movaps on
znver1.
>From gcc-bugs-return-636011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 03 22:42:22 2019
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Subject: [Bug libstdc++/89562] std::filesystem::copy truncates files before byte with value 0x1A
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fied on trunk. I can't even compile gcc-8-branch for mingw so I'm not going to
backport it.
>From gcc-bugs-return-636013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 00:04:57 2019
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Subject: [Bug c++/89568] New: constexpr functions are implicitly noexcept
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Bug ID: 89568
Summary: constexpr functions are implicitly noexcept
Product: gcc
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Short repro:
struct Y { };
bool operator<(Y a, Y b) { return false; }
constexpr bool operator>(Y a, Y b) { return false; }
static_assert(!noexcept(Y{} > Y{}));
static_assert(!noexcept(Y{} < Y{}));
Neither case should be noexcept, since neither function is marked noexcept, but
the first static assertion triggers.
>From gcc-bugs-return-636014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 01:11:49 2019
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Subject: [Bug target/89482] arm aarch32 inline assembly w constraints generate s registers instead of d
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--- Comment #11 from David <gccbugzilla at limegreensocks dot com> ---
(In reply to Ciro Santilli from comment #10)
> If I do start work, I'll ping here to avoid work duplication.
Do. I have some resources I could email you.
>From gcc-bugs-return-636015-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 01:39:01 2019
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Subject: [Bug rtl-optimization/89487] [8/9 Regression] ICE in expand_expr_addr_expr_1, at expr.c:7993
Date: Mon, 04 Mar 2019 01:39:00 -0000
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--- Comment #6 from bin cheng <amker at gcc dot gnu.org> ---
Author: amker
Date: Mon Mar 4 01:38:25 2019
New Revision: 269361
URL: https://gcc.gnu.org/viewcvs?rev=269361&root=gcc&view=rev
Log:
PR tree-optimization/89487
* tree-loop-distribution.c (has_nonaddressable_dataref_p): New.
(create_rdg_vertices): Compute has_nonaddressable_dataref_p.
(distribute_loop): Don't do runtime alias check if there is non-
addressable data reference.
* tree-ssa-loop-ivopts.c (may_be_nonaddressable_p): Check if VAR_DECL
is a register variable.
* gcc/testsuite/gcc.dg/tree-ssa/pr89487.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr89487.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-loop-distribution.c
trunk/gcc/tree-ssa-loop-ivopts.c
>From gcc-bugs-return-636016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 02:03:47 2019
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Subject: [Bug c++/89565] [C++2a] ICE on template instantiating user defined non-type template from template value member
Date: Mon, 04 Mar 2019 02:03:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
An ICE in unify_one_argument started with r243867. Changed into an ICE in
resole_args in r245796.
>From gcc-bugs-return-636017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 02:46:26 2019
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From: "jg at jguk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89569] New: line number is not accurate on large file gcc compared to clang
Date: Mon, 04 Mar 2019 02:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89569
Bug ID: 89569
Summary: line number is not accurate on large file gcc compared
to clang
Product: gcc
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Line number not accurate, and not expected wraparound value. Clang shows
expected 3 (it wraps around uint32), GCC shows 270860129
1. Compile cre_test.c
2. run ./cre_line.o >test.c
3. gcc-8 -Wall -o test test.c
4. observe the warning line number incorrect
$ clang-7 -Wall -o test2 test.c
test.c:3:2: warning: msg1 [-W#warnings]
$ gcc-8 -Wall -o test test.c
test.c: In function ‘main’:
test.c:270856150: warning: #warning msg1 [-Wcpp]
// gcc -Wall -o cre_line cre_line.c
#include <stdio.h>
int main()
{
printf("#include <stdio.h>\nint main() {\n");
for(size_t i = 0; i != 4294967296; ++i)
{
printf("\n");
}
printf("#warning msg1\n return 0;");
return 0;
}
>From gcc-bugs-return-636018-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 02:57:35 2019
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Subject: [Bug rtl-optimization/54936] ICE: in prepare_cmp_insn, at optabs.c:4177 with -fnon-call-exceptions and vector float compare
Date: Mon, 04 Mar 2019 02:57:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> ---
I believe this PR can be finally closed.
>From gcc-bugs-return-636019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 02:57:38 2019
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Subject: [Bug rtl-optimization/89570] New: [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 02:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89570
Bug ID: 89570
Summary: [9 Regression] ICE in prepare_cmp_insn, at
optabs.c:4001
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
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Target: powerpc-*-linux-gnu*
gcc-9.0.0-alpha20190224 snapshot (r269177) ICEs when compiling the following
testcase w/ -mvsx -O1 -ftree-vectorize -fno-trapping-math -fno-tree-dce
-fno-tree-dominator-opts:
void
e6 (double *xt, double *w4, double *mg)
{
int tj;
for (tj = 0; tj < 7; tj += 2)
{
xt[tj] = w4[tj] ? mg[tj] / 2.0 : mg[tj];
xt[tj + 1] = w4[tj + 1] ? mg[tj + 1] / 2.0 : mg[tj + 1];
}
}
% powerpc-e300c3-linux-gnu-gcc-9.0.0-alpha20190224 -mvsx -O1 -ftree-vectorize
-fno-trapping-math -fno-tree-dce -fno-tree-dominator-opts -c v3agviey.c
during RTL pass: expand
v3agviey.c: In function 'e6':
v3agviey.c:2:1: internal compiler error: in prepare_cmp_insn, at optabs.c:4001
2 | e6 (double *xt, double *w4, double *mg)
| ^~
0x62fab1 prepare_cmp_insn
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/optabs.c:4001
0xc15be6 emit_cmp_and_jump_insns(rtx_def*, rtx_def*, rtx_code, rtx_def*,
machine_mode, int, rtx_def*, profile_probability)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/optabs.c:4146
0x939dfc do_compare_rtx_and_jump(rtx_def*, rtx_def*, rtx_code, int,
machine_mode, rtx_def*, rtx_code_label*, rtx_code_label*, profile_probability)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/dojump.c:1171
0x93babd do_compare_and_jump
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/dojump.c:1245
0x93d1f4 do_jump_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/dojump.c:198
0x9ead1d expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/expr.c:9413
0x8bd6f8 expand_gimple_stmt_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfgexpand.c:3789
0x8bd6f8 expand_gimple_stmt
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfgexpand.c:3850
0x8be227 expand_gimple_basic_block
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfgexpand.c:5886
0x8c4427 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190224/work/gcc-9-20190224/gcc/cfgexpand.c:6509
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89571] New: [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
Date: Mon, 04 Mar 2019 04:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89571
Bug ID: 89571
Summary: [9 Regression] ICE in nothrow_spec_p, at
cp/except.c:1238
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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g++-9.0.0-alpha20190303 snapshot (r269357) ICEs when compiling the following
testcase:
struct z8 {
constexpr static int qq /* = 0 */;
};
template<typename T>
struct kf {
kf (const kf &) noexcept (T::qq);
};
struct lk {
kf<z8> e1;
};
template<typename T>
T &sc ();
struct b6 {
decltype (lk (sc<lk> ())) zz;
};
% g++-9.0.0-alpha20190303 -c ldifdhlp.cpp
ldifdhlp.cpp:2:24: error: 'constexpr' static data member 'qq' must have an
initializer
2 | constexpr static int qq /* = 0 */;
| ^~
ldifdhlp.cpp: In instantiation of 'kf<T>::kf(const kf<T>&) [with T = z8]':
ldifdhlp.cpp:18:26: required from here
ldifdhlp.cpp:7:3: error: the value of 'z8::qq' is not usable in a constant
expression
7 | kf (const kf &) noexcept (T::qq);
| ^~
ldifdhlp.cpp:2:24: note: 'z8::qq' was not initialized with a constant
expression
2 | constexpr static int qq /* = 0 */;
| ^~
ldifdhlp.cpp:18:26: internal compiler error: in nothrow_spec_p, at
cp/except.c:1238
18 | decltype (lk (sc<lk> ())) zz;
| ^
0x602261 nothrow_spec_p(tree_node const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/except.c:1238
0x88e2f8 set_flags_from_callee(tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:334
0x88e443 build_call_a(tree_node*, int, tree_node**)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:369
0x89047c build_cxx_call(tree_node*, int, tree_node**, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:9043
0x894579 build_over_call
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:8586
0x896eff build_new_method_call_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:9775
0x896eff build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:9850
0x897c69 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:9274
0x8a289b perform_direct_initialization_if_possible(tree_node*, tree_node*,
bool, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/call.c:11136
0xa6b329 build_static_cast_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/typeck.c:7178
0xa6f6c7 cp_build_c_cast(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/typeck.c:7974
0xa6f6c7 cp_build_c_cast(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/typeck.c:7891
0xa7b6bf build_functional_cast(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/typeck2.c:2263
0x997aa4 cp_parser_functional_cast
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:28288
0x9aa111 cp_parser_postfix_expression
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:7098
0x9ac22d cp_parser_decltype_expr
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:14530
0x9ac22d cp_parser_decltype
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:14626
0x9ac9ef cp_parser_qualifying_entity
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:6669
0x9ac9ef cp_parser_nested_name_specifier_opt
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:6379
0x9ad353 cp_parser_nested_name_specifier
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/cp/parser.c:6619
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Subject: [Bug middle-end/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 06:24:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |middle-end
Target Milestone|--- |9.0
>From gcc-bugs-return-636022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 06:40:02 2019
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Subject: [Bug c++/89533] G++ incorrectly generates noexcept assignment operator
Date: Mon, 04 Mar 2019 06:40:00 -0000
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--- Comment #1 from Alexey Kutumov <alexey.kutumov at gmail dot com> ---
Hi,
FYI, i`ve filed same bug to clang`s bugzilla:
https://bugs.llvm.org/show_bug.cgi?id=40896
There is a comment from clang bug:
Richard Smith 2019-03-01 21:13:38 PST
I would consider this to be both a Clang bug and a bug in the standard's
wording. I think it's clear that we should be considering whether the copy
constructor throws as well as whether the assignment operator throws.
>From gcc-bugs-return-636023-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 06:57:44 2019
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Subject: [Bug tree-optimization/89572] New: ICE in dyn_cast<gcond*, gimple>(gimple*) / get_loop_exit_condition(loop const*)
Date: Mon, 04 Mar 2019 06:57:00 -0000
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Bug ID: 89572
Summary: ICE in dyn_cast<gcond*, gimple>(gimple*) /
get_loop_exit_condition(loop const*)
Product: gcc
Version: 9.0
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Keywords: ice-on-valid-code
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Another __attribute__((returns_twice)) issue.
gcc-9.0.0-alpha20190303 snapshot (r269357), 8.3, 7.3, 6.3, 5.4, 4.9.4 all ICE
when compiling the following testcase w/ -O2 -finline-functions:
int vh, it, k1;
void
vn (void)
{
++vh;
if (vh == 0 && it == 0)
k1 = -k1;
}
__attribute__ ((returns_twice)) void
ef (int *uw)
{
while (uw != (void *) 0)
{
vn ();
*uw = 0;
}
}
void
gu (int *uw)
{
ef (uw);
}
% gcc-9.0.0-alpha20190303 -O2 -finline-functions -c qnf39r7s.c
during GIMPLE pass: ivopts
qnf39r7s.c: In function 'gu':
qnf39r7s.c:22:1: internal compiler error: Segmentation fault
22 | gu (int *uw)
| ^~
0xd6fc4f crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/toplev.c:326
0xe4314d gcond* dyn_cast<gcond*, gimple>(gimple*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/is-a.h:224
0xe4314d get_loop_exit_condition(loop const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/tree-scalar-evolution.c:913
0xfe2e27 find_loop_location(loop*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/tree-vect-loop-manip.c:1322
0xec2e52 tree_ssa_iv_optimize_loop
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/tree-ssa-loop-ivopts.c:7538
0xec2e52 tree_ssa_iv_optimize()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/tree-ssa-loop-ivopts.c:7628
0xee1f80 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190303/work/gcc-9-20190303/gcc/tree-ssa-loop.c:513
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Subject: [Bug rtl-optimization/88652] sel-sched.c:1545:11: runtime error: index 2 out of bounds for type 'long unsigned int [2]'
Date: Mon, 04 Mar 2019 08:32:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Any progress on this please?
>From gcc-bugs-return-636025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 08:39:31 2019
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Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
Date: Mon, 04 Mar 2019 08:39:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45877
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45877&action=edit
test-case
>From gcc-bugs-return-636026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 08:40:04 2019
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Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
Date: Mon, 04 Mar 2019 08:40:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Unreduced test-case:
https://drive.google.com/file/d/1Fp8OE7frCHNglDQ5CTGyBaQXHkeeD-vZ/view?usp=sharing
>From gcc-bugs-return-636027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 08:52:30 2019
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Subject: [Bug target/86952] Avoid jump table for switch statement with -mindirect-branch=thunk
Date: Mon, 04 Mar 2019 08:52:00 -0000
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--- Comment #17 from Martin Liška <marxin at gcc dot gnu.org> ---
> I leave that up to you guys, but I would at min probably implement something
> like s390 folks did for gcc, commit db7a90aa0de5 ("S/390: Disable prediction
> of indirect branches"), see s390_case_values_threshold() which does:
Sure, that's probably the right approach. I would appreciate help with the
benchmark.
Can you please come up with a --param case-values-threshold value that will
show
when a jump table (w/ retpolines) is equally fast as a decision tree
(-fno-jump-tables)?
>
> +unsigned int
> +s390_case_values_threshold (void)
> +{
> + /* Disabling branch prediction for indirect jumps makes jump tables
> + much more expensive. */
> + if (TARGET_INDIRECT_BRANCH_NOBP_JUMP)
> + return 20;
> +
> + return default_case_values_threshold ();
> +}
>
> > For x86 something similar could be done. Anyway, H.J. Lu asked me
> > > to reopen this issue (but seems like I cannot make this change from my
> > > account).
> >
> > Yep, I would need an account ending with @gcc.org to change a bug.
>From gcc-bugs-return-636028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:09:57 2019
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Subject: [Bug c/89549] [7/8/9 Regression] -Wmisleading-indentation is disabled from this point onwards, since column-tracking was disabled due to the size of the code/headers
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |7.5
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Subject: [Bug middle-end/89551] [9 regression] Test case gcc.dg/uninit-pred-8_b.c fails after r269302
Date: Mon, 04 Mar 2019 09:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-04
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Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.
>From gcc-bugs-return-636029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:10:10 2019
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Subject: [Bug c++/89550] [8/9 Regression] Spurious array-bounds warning when using __PRETTY_FUNCTION__ as a string_view
Date: Mon, 04 Mar 2019 09:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-636031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:15:45 2019
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Subject: [Bug target/89557] [7/8/9 regression] 4*movq to 2*movaps IPC performance regression on znver1 with -Og
Date: Mon, 04 Mar 2019 09:15:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |WAITING
Keywords| |missed-optimization
Last reconfirmed| |2019-03-04
Component|c++ |target
Ever confirmed|0 |1
Summary|[7/8 regression] 4*movq to |[7/8/9 regression] 4*movq
|2*movaps IPC performance |to 2*movaps IPC performance
|regression on znver1 with |regression on znver1 with
|-Og |-Og
Target Milestone|--- |7.5
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please provide a compilable testcase.
>From gcc-bugs-return-636032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:17:41 2019
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Subject: [Bug preprocessor/66505] -Wno-error=pedantic does not reverse -Werror -Wpedantic
Date: Mon, 04 Mar 2019 09:17:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I believe I'll fix it once patch for PR89051 will be merged.
>From gcc-bugs-return-636033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:18:39 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Mon, 04 Mar 2019 09:18:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-636034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:22:55 2019
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Subject: [Bug c++/89561] feature request: undefined behaviour compile-time configuration
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that iff GCC could easily see "what you want" and see that some undefined
behavior rule contradicts this then from a QOI perspective GCC already tries
to do what you want. The difficult thing is to detect what you want (from
inside generic analysis infrastructure).
For example GCC will not misoptimize
int i;
int main() { *(float *)&i = 0.0; return i; }
even if it could (because type-based alias rules make the code undefined)
because it sees the must-alias.
That is, -fundefined-behavior=XYZ is impossible besides making all undefined
behavior implementation-defined (there are many options to individually control
such thing already, like -fwrapv for example).
>From gcc-bugs-return-636035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:28:20 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members
Date: Mon, 04 Mar 2019 09:28:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
CC| |marxin at gcc dot gnu.org,
| |mjambor at suse dot cz
Component|tree-optimization |ipa
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
You are looking for IPA DSE - by marshalling through a struct you make GCCs
job a lot harder... "pro-active" IPA-SRA might help here, or making its
analysis stronger by looking for (partial) aggregate argument usage...
Don't hold your breath.
>From gcc-bugs-return-636036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:29:39 2019
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Subject: [Bug target/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 09:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-636037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:29:58 2019
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Subject: [Bug c++/89571] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/89572] ICE in dyn_cast<gcond*, gimple>(gimple*) / get_loop_exit_condition(loop const*)
Date: Mon, 04 Mar 2019 09:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-636039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:45:48 2019
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From: "eyalroz at technion dot ac.il" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members
Date: Mon, 04 Mar 2019 09:45:00 -0000
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--- Comment #2 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
(In reply to Richard Biener from comment #1)
> You are looking for IPA DSE
I'm not a compiler expert and don't know what this means. Even literally, I
don't know what these acronyms stand for.
> by marshalling through a struct you make GCCs job a lot harder...
Well, first - yes, I suppose this could make things harder. However, as GCC
does its magic, I presume that at some point the struct abstraction is lost,
and we only have code which passes values to another function in registers, and
one of these values is unused. So at some point along the way this might be
easier than analyzing structs.
> "pro-active" IPA-SRA might help here,
Again, I have no idea what that is... could I trouble you to elaborate just a
bit more?
>From gcc-bugs-return-636040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 09:52:50 2019
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Subject: [Bug c/89573] New: -fexcess-precision=standard doesn't work for conversion to integer of multiplication
Date: Mon, 04 Mar 2019 09:52:00 -0000
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Bug ID: 89573
Summary: -fexcess-precision=standard doesn't work for
conversion to integer of multiplication
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The following, built with -m32 -march=i586 -fexcess-precision=standard on
x86_64-linux outputs
a: -75345
b: -75346
c: -75346
where the first result is off. The IL looks like
int r = (int) ((long double) log (p) * (long double) inv_log_of_base);
where possibly the missing cast to (double) is elided by bogus optimization
(didn't try to track down the issue yet).
-ffloat-store makes the testcase work as does any optimization (well, we
then get constant folding).
#include <math.h>
#include <stdio.h>
int main(int argc, char **argv)
{
double p = 0.00053447623258905705;
double inv_log_of_base = 10000.499991668185;
int r = log(p) * inv_log_of_base;
printf("a: %d\n", r);
double gr = log(p) * inv_log_of_base;
printf("b: %g\n", gr);
double g = log(p);
int c = g * inv_log_of_base;
printf("c: %d\n", c);
return 0;
}
>From gcc-bugs-return-636041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:01:44 2019
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Subject: [Bug tree-optimization/89566] [9 Regression] ICE on compilable C++ code: in gimple_call_arg, at gimple.h:3166
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45878
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45878&action=edit
gcc9-pr89566.patch
Untested fix.
>From gcc-bugs-return-636042-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:16:40 2019
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Subject: [Bug tree-optimization/89572] [7/8/9 Regression] ICE in dyn_cast<gcond*, gimple>(gimple*) / get_loop_exit_condition(loop const*)
Date: Mon, 04 Mar 2019 10:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in dyn_cast<gcond*, |[7/8/9 Regression] ICE in
|gimple>(gimple*) / |dyn_cast<gcond*,
|get_loop_exit_condition(loo |gimple>(gimple*) /
|p const*) |get_loop_exit_condition(loo
| |p const*)
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started to ICE with r202185.
>From gcc-bugs-return-636043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:20:57 2019
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Subject: [Bug c++/89571] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
Date: Mon, 04 Mar 2019 10:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r269032 aka PR88368 fix.
>From gcc-bugs-return-636044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:21:19 2019
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Subject: [Bug c++/88368] [7/8 Regression] Improper ``use of deleted function''
Date: Mon, 04 Mar 2019 10:21:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The above change introduced PR89571.
>From gcc-bugs-return-636045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:22:26 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89551] [9 regression] Test case gcc.dg/uninit-pred-8_b.c fails after r269302
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |law at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
The difference starts in DOM3 by the CFG cleanup change catching two more BB
merging opportunities which then in VRP2 causes(?) extra jump threadings to
happen (for whatever reason...).
On x86_64 we have different IL (branch-cost, logical-op-non-short-circuit)
so what happens is different.
The IL we hand off to the late uninit pass is not resembling the original
source in any way due to these threadings and the usual inabilities of
the uninit pass pop up.
--param logical-op-non-short-circuit=1 fixes the testcase on powerpc64le,
=0 makes it fail on x86_64.
I'll adjust the testcase, not sure if anybody wants to analyze why
jump threading goes berzerk here.
Note disabling DOM3 fixes the testcase as well - the effect is just
the extra forwarder and then in VRP2:
Visiting statement:
_2 = g.0_1 + 1;
-<<<< COPY m_19 = m_8(D)
-0>>> COPY m_20 = m_8(D)
+LKUP STMT n_7(D) le_expr 9
+FIND: 0
+LKUP STMT m_8(D) gt_expr 100
+FIND: 0
+ Registering jump thread: (6, 7) incoming edge; (7, 8) joiner; (8, 10)
normal; (10, 11) nocopy;
<<<< COPY m_20 = m_8(D)
+LKUP STMT n_7(D) le_expr 9
+FIND: 0
+ Registering jump thread: (6, 7) incoming edge; (7, 9) joiner; (9, 11)
normal;
and more similar cases.
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Subject: [Bug tree-optimization/19792] Missed optimizations due to signedness in the way
Date: Mon, 04 Mar 2019 10:27:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2016-08-06 00:00:00 |2019-3-4
CC| |rguenth at gcc dot gnu.org
--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> ---
Still an issue as of "g++ (Compiler-Explorer-Build) 9.0.1 20190303
(experimental)" on x86-64 at -O2:
_Z3fooj:
movslq %edi, %rax
movl %edi, %edi
movzbl size_lookup(%rdi), %edx
cmpb %dl, size_lookup(%rax)
sete %al
movzbl %al, %eax
ret
_Z3barj:
movl $1, %eax
ret
FWIW "clang version 7.0.0 (tags/RELEASE_700/final 342594)" at -O2:
_Z3fooj: # @_Z3fooj
movslq %edi, %rax
movb size_lookup(%rax), %cl
movl %eax, %edx
xorl %eax, %eax
cmpb size_lookup(%rdx), %cl
sete %al
retq
_Z3barj: # @_Z3barj
movl $1, %eax
retq
and "icc (ICC) 19.0.1.144 20181018":
_Z3fooj:
xorl %eax, %eax #6.36
movslq %edi, %rdi #6.11
movb size_lookup(%rdi), %dl #6.11
movl %edi, %edi #6.36
cmpb size_lookup(%rdi), %dl #6.36
sete %al #6.36
ret #6.36
_Z3barj:
movl $1, %eax #13.15
ret
>From gcc-bugs-return-636047-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:30:56 2019
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From: "dmitrievdv242 at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89574] New: internal compiler error: in conv_function_val, at fortran/trans-expr.c:3792
Date: Mon, 04 Mar 2019 10:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89574
Bug ID: 89574
Summary: internal compiler error: in conv_function_val, at
fortran/trans-expr.c:3792
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dmitrievdv242 at yandex dot ru
Target Milestone: ---
Created attachment 45879
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45879&action=edit
A source file to reproduce the bug
The bug occurs when you have a module with some name (lets name it init) and it
uses a module with an aliased subroutine or function with the same name (init)
- see the attached source file.
-The command command line that triggers the bug (with -v and -save-temps
flags):
gfortran-8 -v -save-temps -o test test.f90
-The the compiler output:
Driving: gfortran-8 -v -save-temps -o test test.f90 -l gfortran -l m
-shared-libgcc
Using built-in specs.
COLLECT_GCC=gfortran-8
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/8/lto-wrapper
Target: i686-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.1.0-5ubuntu1~16.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=i686-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--with-target-system-zlib --enable-objc-gc=auto --enable-targets=all
--enable-multiarch --disable-werror --with-arch-32=i686
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu
--target=i686-linux-gnu
Thread model: posix
gcc version 8.1.0 (Ubuntu 8.1.0-5ubuntu1~16.04)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'test' '-shared-libgcc'
'-mtune=generic' '-march=i686'
/usr/lib/gcc/i686-linux-gnu/8/f951 test.f90 -quiet -dumpbase test.f90
-mtune=generic -march=i686 -auxbase test -version -fintrinsic-modules-path
/usr/lib/gcc/i686-linux-gnu/8/finclude -o test.s
GNU Fortran (Ubuntu 8.1.0-5ubuntu1~16.04) version 8.1.0 (i686-linux-gnu)
compiled by GNU C version 8.1.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran2008 (Ubuntu 8.1.0-5ubuntu1~16.04) version 8.1.0 (i686-linux-gnu)
compiled by GNU C version 8.1.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
test.f90:23:0:
call test_init
internal compiler error: in conv_function_val, at fortran/trans-expr.c:3792
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
The flag -save-temps doesn't produce any *.i files, only one *.s file.
>From gcc-bugs-return-636048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:47:45 2019
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Subject: [Bug middle-end/56770] Partial sums loop optimization
Date: Mon, 04 Mar 2019 10:47:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
Assignee|steven at gcc dot gnu.org |unassigned at gcc dot gnu.org
>From gcc-bugs-return-636049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:49:03 2019
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Subject: [Bug c/89573] -fexcess-precision=standard doesn't work for conversion to integer of multiplication
Date: Mon, 04 Mar 2019 10:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The FE correctly builds
<<< Unknown tree: excess_precision_expr
(long double) __builtin_log (p) * (long double) inv_log_of_base >>>
but then convert_for_assignment seems to elide via convert_to_real_1:
/* Convert (outertype)((innertype0)a+(innertype1)b)
into ((newtype)a+(newtype)b) where newtype
is the widest mode from all of these. */
304 case PLUS_EXPR:
305 case MINUS_EXPR:
306 case MULT_EXPR:
307 case RDIV_EXPR:
308 {
309 tree arg0 = strip_float_extensions (TREE_OPERAND (expr,
0));
310 tree arg1 = strip_float_extensions (TREE_OPERAND (expr,
1));
where strip_float_extensions makes the comment not true (because we ignore
the casts to long double).
Maybe the code in convert_and_check
1627 if (TREE_CODE (expr) == EXCESS_PRECISION_EXPR)
1628 {
1629 tree orig_type = TREE_TYPE (expr);
1630 expr = TREE_OPERAND (expr, 0);
1631 expr_for_warning = convert (orig_type, expr);
1632 if (orig_type == type)
1633 return expr_for_warning;
shouldn't use convert here but convert_to_real_1 with fold_p = false?
But then other code may simply elide the conversions (can we really
ignore the extra rounding performed by the outer truncating conversion, ever?)
>From gcc-bugs-return-636050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:49:11 2019
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Subject: [Bug tree-optimization/55629] Missed value numbering to a constant
Date: Mon, 04 Mar 2019 10:49:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2012-12-09 00:00:00 |2019-3-4
--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> ---
Trunk today with -O2:
foo(int):
cmpl $1, %edi
sbbl %eax, %eax
notl %eax
cmpl $1, %edi
sbbl %edx, %edx
leal 6(%rdx,%rax), %eax
ret
and with -O2:
foo(int):
movl $5, %eax
ret
>From gcc-bugs-return-636051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 10:53:37 2019
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Subject: [Bug rtl-optimization/45026] struct passed as argument in memory compiles to dead stores
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|ia64-unknown-linux-gnu |
Last reconfirmed|2011-02-25 23:15:12 |2019-3-4
Component|target |rtl-optimization
Summary|Empty function compiles to |struct passed as argument
|many loads and stores |in memory compiles to dead
| |stores
--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> ---
Still an issue on ia64, but actually a generic issue (per comment #1).
>From gcc-bugs-return-636052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:00:58 2019
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Subject: [Bug testsuite/19095] testsuite/gcc.dg/vect/vect.exp is not precise enough on x86
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2006-03-05 03:54:36 |2019-3-4
--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> ---
Still an issue, and add avx to the list now.
>From gcc-bugs-return-636053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:02:09 2019
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Subject: [Bug tree-optimization/19792] Missed optimizations due to signedness in the way
Date: Mon, 04 Mar 2019 11:02:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think for foo the "solution" is to only consider indices with well-defined
behavior, that is, for size_lookup[] indices in [0,257] which means we
should be safely able to truncate the index to unsigned char (for the
purpose of analysis only!).
Note we're not value-numbering (int) t the same as t but even
size_lookup[(short) t] should result in the same value to be loaded
unless undefined behavior is invoked.
Of course extern unsigned char size_lookup[257]; might be considered
extern unsigned char size_lookup[]; for QOI reasons and existing broken
code, so... but just change the testcase to non-extern size_lookup.
The solution might ly in value-numbering which could, when value-numbering
the two loads lookup (and insert!) VNs of (shortest-allowed-type)index.
The danger is of course that the shortest-allowed-type might differ
depentent on the shape of the lookup where otherwise we'd compute the
same VN.
I'm quite sure we can't simply trust TYPE_DOMAIN of TREE_TYPE of
TREE_OPERAND (array-ref, 0) when constraining operand 1.
>From gcc-bugs-return-636054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:12:39 2019
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Subject: [Bug target/44532] x86-64 unnecessary parameter extension
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Last reconfirmed|2010-06-14 11:30:39 |2019-3-4
CC| |steven at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> ---
GCC trunk today:"
f1(short, int):
movswl %di, %eax
imull %esi, %eax
ret
f2(unsigned short, int):
movzwl %di, %eax
imull %esi, %eax
ret
clang trunk:
f1(short, int): # @f1(short, int)
movl %edi, %eax
imull %esi, %eax
retq
f2(unsigned short, int): # @f2(unsigned short,
int)
movl %edi, %eax
imull %esi, %eax
retq
icc 19.0.1:
f1(short, int):
movswq %di, %rax #3.12
imull %esi, %eax #3.16
ret #3.16
f2(unsigned short, int):
movzwl %di, %eax #7.1
imull %esi, %eax #8.16
ret
Given the comments from H.J. and the icc output, let's WONTFIX this one.
>From gcc-bugs-return-636055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:14:44 2019
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Subject: [Bug target/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-03-04
CC| |jakub at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-fno-tree-dce considered harmful (as in many cases).
Seems in this case match.pd invoked during forwprop4 (after generic vector
lowering) creates statements that don't have hw support.
(simplify
(vec_cond @0 @1 (view_convert? (uncond_op@4 @2 @3)))
(with { tree op_type = TREE_TYPE (@4); }
(if (element_precision (type) == element_precision (op_type))
(view_convert (cond_op (bit_not @0) @2 @3 (view_convert:op_type @1)))))))
and are dead.
The dse3 to forwprop4 changes are:
- vect_iftmp.20_108 = vect__6.19_106 * vect_cst__107;
+ vect_iftmp.20_108 = vect__6.19_106 * { 5.0e-1, 5.0e-1 };
iftmp.5_28 = _14 * 5.0e-1;
- vect_iftmp.21_110 = VEC_COND_EXPR <vect__4.16_103 == vect_cst__109,
vect__6.19_106, vect_iftmp.20_108>;
+ _34 = vect__4.16_103 == { 0.0, 0.0 };
+ _1 = vect__4.16_103 != { 0.0, 0.0 };
+ vect_iftmp.21_110 = VEC_COND_EXPR <vect__4.16_103 == { 0.0, 0.0 },
vect__6.19_106, vect_iftmp.20_108>;
No target other than aarch64 has the IFN_COND_* support so far (though I bet
AVX512F could be a good candidate for that), so for the other targets the above
match.pd pattern just creates garbage that with -fno-tree-dce isn't even
removed.
Shouldn't that match.pd simplification be a) restricted to targets that
actually have some IFN_COND_*, so that it doesn't do useless work elsewhere b)
even if it fails, clean up the temporaries it created while processing the
(bit_not @0) if it fails?
Guess this has been introduced with r260710.
>From gcc-bugs-return-636056-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:17:39 2019
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Subject: [Bug target/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 11:17:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or perhaps as an alternative, we shouldn't use the match.pd code here to tweak
the conditions of VEC_COND_EXPRs exactly because the conditions themselves
might be valid solely in VEC_COND_EXPR's first argument and not as standalone
stmt, and just use some C helper from the match.pd rule or something to deal
with that instead.
>From gcc-bugs-return-636058-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:19:34 2019
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Subject: [Bug c++/87603] [C++17] noexcept isn't special cased for constant expressions anymore
Date: Mon, 04 Mar 2019 11:19:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |barry.revzin at gmail dot com
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89568 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-636057-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:19:34 2019
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Subject: [Bug c++/89568] constexpr functions are implicitly noexcept
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Actually in C++11 and C++14 they are required to be noexcept. That changed for
C++17. See PR 87603 for more info.
*** This bug has been marked as a duplicate of bug 87603 ***
>From gcc-bugs-return-636059-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:22:44 2019
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Subject: [Bug c++/71425] GCC does not implement C++/WG21 DR 1399/1388
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
Ever confirmed|0 |1
>From gcc-bugs-return-636060-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:31:57 2019
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Subject: [Bug target/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
At the minimum guarding those simplifications with something like
expand_vec_cmp_expr_p test for @0 if we can figure out mask type somehow (what
would IFN_COND_* need), and a check whether IFN_COND_* is supported at all.
>From gcc-bugs-return-636061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:39:14 2019
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Subject: [Bug rtl-optimization/14504] Missed Bit Twiddling Optimization
Date: Mon, 04 Mar 2019 11:39:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2009-04-22 23:02:33 |2019-3-4
--- Comment #9 from Steven Bosscher <steven at gcc dot gnu.org> ---
// -O3 -m32 -fomit-frame-pointer
unsigned long cond_mask_1(bool flag, unsigned long mask, unsigned long target)
{
return flag ? target | mask : target & ~mask;
}
unsigned long cond_mask_2(bool flag, unsigned long mask, unsigned long target)
{
return (mask | target ^ 0xFFFFFFFFUL + flag) ^ 0xFFFFFFFFUL + flag;
}
GCC trunk:
cond_mask_1(bool, unsigned long, unsigned long):
movl 12(%esp), %eax
movl 8(%esp), %edx
movl %eax, %ecx
orl %edx, %ecx
notl %edx
andl %eax, %edx
cmpb $0, 4(%esp)
movl %ecx, %eax
cmove %edx, %eax
ret
cond_mask_2(bool, unsigned long, unsigned long):
movzbl 4(%esp), %eax
leal -1(%eax), %edx
movl 12(%esp), %eax
xorl %edx, %eax
orl 8(%esp), %eax
xorl %edx, %eax
ret
>From gcc-bugs-return-636062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 11:49:00 2019
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Subject: [Bug sanitizer/86899] [8/9 regression] TSAN incorrect warning: control reaches end of non-void function
Date: Mon, 04 Mar 2019 11:49:00 -0000
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Sergey Semushin <Predelnik at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Predelnik at gmail dot com
--- Comment #5 from Sergey Semushin <Predelnik at gmail dot com> ---
Had the same issue where the only dead code was leftover break in a switch case
after return. Reasons are probably exactly the same but maybe in this form this
issue will arise more often.
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Subject: [Bug c++/88334] Implement P0482R6, C++20 char8_t.
Date: Mon, 04 Mar 2019 12:03:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is done now.
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Subject: [Bug libstdc++/88322] Implement C++20 library features.
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Bug 88322 depends on bug 88334, which changed state.
Bug 88334 Summary: Implement P0482R6, C++20 char8_t.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88334
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug c++/88323] implement C++20 language features.
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Bug 88323 depends on bug 88334, which changed state.
Bug 88334 Summary: Implement P0482R6, C++20 char8_t.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88334
What |Removed |Added
----------------------------------------------------------------------------
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>From gcc-bugs-return-636066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:04:16 2019
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Subject: [Bug libstdc++/88340] Implement P0019R8, C++20 std::atomic_ref.
Date: Mon, 04 Mar 2019 12:04:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 88305 ***
>From gcc-bugs-return-636067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:04:16 2019
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Subject: [Bug libstdc++/88305] Implement P0019R8, C++20 std::atomic_ref
Date: Mon, 04 Mar 2019 12:04:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 88340 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-636068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:04:16 2019
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Subject: [Bug libstdc++/88322] Implement C++20 library features.
Date: Mon, 04 Mar 2019 12:04:00 -0000
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Bug 88322 depends on bug 88340, which changed state.
Bug 88340 Summary: Implement P0019R8, C++20 std::atomic_ref.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88340
What |Removed |Added
----------------------------------------------------------------------------
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>From gcc-bugs-return-636069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:07:37 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 12:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45880
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45880&action=edit
gcc9-pr89570.patch
Untested fix. No way to test on aarch64 with SVE though (nor experience with
that in cross-testing).
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From: "jozef.l at mittosystems dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89575] New: LRA for msp430 - Max. number of generated reload insns - frame pointer subreg simplification
Date: Mon, 04 Mar 2019 12:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89575
Bug ID: 89575
Summary: LRA for msp430 - Max. number of generated reload insns
- frame pointer subreg simplification
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jozef.l at mittosystems dot com
Target Milestone: ---
Created attachment 45881
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45881&action=edit
testcase
When enabling LRA for msp430, libgcc fails to build, specifically _muldi3.o.
> gcc -S tester.i -O2
> during RTL pass: reload
> ../../../../libgcc/libgcc2.c: In function '__muldi3':
> ../../../../libgcc/libgcc2.c:558:1: internal compiler error: Max. number of generated reload insns per insn is achieved (90)
>
> 558 | }
> | ^
> 0xa2ab20 lra_constraints(bool)
> ../../gcc/lra-constraints.c:4875
> 0xa12b84 lra(_IO_FILE*)
> ../../gcc/lra.c:2461
> 0x9c68f1 do_reload
> ../../gcc/ira.c:5516
> 0x9c68f1 execute
> ../../gcc/ira.c:5700
The cycling reload occurs because IRA assigns hard register R4 (also
FRAME_POINTER_REGNUM, but not fixed for this use) to a pseudo reg, but when LRA
goes to simplify a subreg of the pseudo, it disallows simplification of this
subreg.
Specifically, simplify_subreg_regno (rtlanal.c):
> /* We shouldn't simplify stack-related registers. */
> if ((!reload_completed || frame_pointer_needed)
> && xregno == FRAME_POINTER_REGNUM)
> return -1;
This is in an output reload, so a new set of mov insns are generated to load
the value back into the original, problematic pseudo of R4. Once again
simplify_subreg_regno is called to simplify the pseudo of R4, but it is
disallowed and the cycle continues.
From the IRA dump:
> Disposition:
> 0:r28 l0 8 2:r30 l0 4 1:r31 l0 4
> ...
> (insn 2 6 3 2 (set (subreg:HI (reg/v:DI 30 [ arg1 ]) 0)
> (reg:HI 12 R12 [ arg1 ])) "tester.c":16:1 12 {movhi}
> (expr_list:REG_DEAD (reg:HI 12 R12 [ arg1 ])
> (nil)))
From the reload dump:
> Creating newreg=37 from oldreg=30, assigning class NO_REGS to subreg reg r37
> 2: r37:DI#0=R12:HI
> ...
> Inserting subreg reload after:
> 42: r30:DI#0=r37:DI#0
> ...
> Creating newreg=38 from oldreg=30, assigning class NO_REGS to subreg reg r38
> 42: r38:DI#0=r37:DI#0
> ...
> Inserting subreg reload after:
> 52: r30:DI#0=r38:DI#0
And so on.
Is it OK to allow simplification of a subreg of FRAME_POINTER_REGNUM
when lra_in_progress is true? After all, constraints on the allocation of hard
regs shouldn't get more resitrictive as compilation progresses?
e.g.
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 3873b4098b0..9700928ff4e 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -3971,7 +3971,7 @@ simplify_subreg_regno (unsigned int xregno, machine_mode
xmode,
return -1;
/* We shouldn't simplify stack-related registers. */
- if ((!reload_completed || frame_pointer_needed)
+ if ((!(reload_completed || lra_in_progress) || frame_pointer_needed)
&& xregno == FRAME_POINTER_REGNUM)
return -1;
This fixes the cycling reload for insn 2, as the frame pointer is not needed,
but there are further separate issues building the test case.
I've attached a reduced test case, and the IRA and reload dumps.
> gcc -v
> Target: msp430-elf
> Configured with: ../configure --target=msp430-elf --disable-nls --enable-languages=c,c++
> Thread model: single
> gcc version 9.0.1 20190301 (experimental) (GCC)
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Subject: [Bug rtl-optimization/89575] LRA for msp430 - Max. number of generated reload insns - frame pointer subreg simplification
Date: Mon, 04 Mar 2019 12:08:00 -0000
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--- Comment #2 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Created attachment 45883
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45883&action=edit
reload dump
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Subject: [Bug rtl-optimization/89575] LRA for msp430 - Max. number of generated reload insns - frame pointer subreg simplification
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--- Comment #1 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Created attachment 45882
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45882&action=edit
ira dump
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89570] [9 Regression] ICE in prepare_cmp_insn, at optabs.c:4001
Date: Mon, 04 Mar 2019 12:17:00 -0000
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 4 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89570
>
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|NEW |ASSIGNED
> Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
>
> --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Created attachment 45880
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45880&action=edit
> gcc9-pr89570.patch
>
> Untested fix. No way to test on aarch64 with SVE though (nor experience with
> that in cross-testing).
LGTM
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Subject: [Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jamborm at gcc dot gnu.org
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
In the first excample, the interproceudral constant propagation pass
(IPA-CP) found that foo1 is so small that copying all of it might be
worth not passing the unused argument and so it does, that is why
you'll find function foo1 twice in the assembly. This functionality
in the pass is there just "on the side" and it is not easy to make it
also work with aggegates, not even desireable (that is the job of a
different pass, see below).
Both examples are compiled better if you make foo1 and foo2 static.
In the latter case, you get exactly what you want, the structure is be
split and only the used part survives. In the first example, you
don't get a clone emitted which you probably don't need. Both of
these transformation are done by a pass called interprocedural scalar
replacement of aggregates (IPA-SRA), which specifically also aims to
remove unused arguments, but it never creates multiple clones.
If you cannot make these functions static, you need link-time
optimization (LTO, option -flto) because you need information about
one compilation unit to optimize others. The current IPA-SRA cannot
unfortunately make use of it but I have a replacement for it that can,
hopefully it will be part of GCC 10.
I'm afraid you'd need to provide a strong real-world use-case to make
me investigate how to make IPA-SRA clone so you might not need static
and/or LTO because that would mean devising a cost/benefit
(size/speedup) heuristics and that is not easy.
>From gcc-bugs-return-636076-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:23:56 2019
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Subject: [Bug tree-optimization/89572] [7/8 Regression] ICE in dyn_cast<gcond*, gimple>(gimple*) / get_loop_exit_condition(loop const*)
Date: Mon, 04 Mar 2019 12:23:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 4 12:23:17 2019
New Revision: 269363
URL: https://gcc.gnu.org/viewcvs?rev=269363&root=gcc&view=rev
Log:
2019-03-04 Richard Biener <rguenther@suse.de>
PR middle-end/89572
* tree-scalar-evolution.c: (get_loop_exit_condition): Use
safe_dyn_cast.
* gcc.dg/torture/pr89572.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89572.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-scalar-evolution.c
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Subject: [Bug tree-optimization/89572] [7/8 Regression] ICE in dyn_cast<gcond*, gimple>(gimple*) / get_loop_exit_condition(loop const*)
Date: Mon, 04 Mar 2019 12:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |9.0
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|dyn_cast<gcond*, |dyn_cast<gcond*,
|gimple>(gimple*) / |gimple>(gimple*) /
|get_loop_exit_condition(loo |get_loop_exit_condition(loo
|p const*) |p const*)
Known to fail|9.0 |
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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From: "wielkiegie at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89576] New: constexpr not working if implicitly captured in a lambda in a function template (gcc 8.3+)
Date: Mon, 04 Mar 2019 12:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89576
Bug ID: 89576
Summary: constexpr not working if implicitly captured in a
lambda in a function template (gcc 8.3+)
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wielkiegie at gmail dot com
Target Milestone: ---
There are many similar bugs that I have found in the bugzilla (see below), but
this one differs from the other ones:
1. It happens only in gcc 8.3 and trunk (gcc 8.2 and earlier are fine)
2. The lambda is not generic (but it is contained in a function template which
might be similar internally)
3. The capture is implicit
Example to reproduce:
------------------------------------------------
template <class T>
void foo()
{
constexpr int x = 0;
[&] {
if constexpr (x) {}
};
}
------------------------------------------------
Produces the following in gcc 8.3 and trunk:
------------------------------------------------
<source>: In lambda function:
<source>:6:24: error: lambda capture of 'x' is not a constant expression
if constexpr (x) {}
^
------------------------------------------------
The following changes to the example make it compile:
1. Adding static to the constexpr int
2. Making it a regular function and not a template
3. Removing the [&] capture
Changing the capture from [&] to [=] doesn't help.
If I change it to an explicit capture [x], it fails in all gcc versions except
gcc 7.4 and passes on clang.
The other similar bug reports: bug 86429, bug 82643
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From: "steven at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/45144] SRA optimization issue of bit-field
Date: Mon, 04 Mar 2019 12:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45144
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |steven at gcc dot gnu.org
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--- Comment #6 from Steven Bosscher <steven at gcc dot gnu.org> ---
With/without -fno-tree-sra gives same code since GCC 5.4.1.
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Subject: [Bug tree-optimization/89437] [9 regression] incorrect result for sinl (atanl (x))
Date: Mon, 04 Mar 2019 12:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89437
--- Comment #1 from Wilco <wilco at gcc dot gnu.org> ---
Author: wilco
Date: Mon Mar 4 12:36:04 2019
New Revision: 269364
URL: https://gcc.gnu.org/viewcvs?rev=269364&root=gcc&view=rev
Log:
Fix PR89437
Fix PR89437. Fix the sinatan-1.c testcase to not run without
a C99 target system. Use nextafterl for long double initialization.
Fix an issue with sinl (atanl (sqrtl (LDBL_MAX)) returning 0.0
instead of 1.0 by using x < sqrtl (LDBL_MAX) in match.pd.
gcc/
PR tree-optimization/89437
* match.pd: Use lt in sin(atan(x)) and cos(atan(x)) simplifications.
testsuite/
PR tree-optimization/89437
* gcc.dg/sinatan-1.c: Fix testcase.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/sinatan-1.c
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Subject: [Bug middle-end/19987] [meta-bug] fold missing optimizations in general
Date: Mon, 04 Mar 2019 12:38:00 -0000
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Bug 19987 depends on bug 15241, which changed state.
Bug 15241 Summary: [tree-ssa] Convert a <= 7 && b <= 7 into (a | b) <= 7.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15241
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/15241] [tree-ssa] Convert a <= 7 && b <= 7 into (a | b) <= 7.
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--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> ---
Fixed since GCC 8
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Subject: [Bug tree-optimization/41320] XFAIL gcc.dg/tree-ssa/forwprop-12.c
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Actually reconstructing array-refs is dangerous so I think the testcase looks
for something unwanted...
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Subject: [Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members
Date: Mon, 04 Mar 2019 12:47:00 -0000
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--- Comment #4 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
> In the first excample, the interproceudral constant propagation pass
> (IPA-CP) found that foo1 is so small that copying all of it might be
> worth not passing the unused argument and so it does, that is why
> you'll find function foo1 twice in the assembly.
Why does this have anything to do with constant propagation? I also don't
understand the sense in two identical copies.
It also sounds like "the wrong optimization" is being used if it's not about
noticing unused parameters.
> This functionality
> in the pass is there just "on the side" and it is not easy to make it
> also work with aggegates, not even desireable (that is the job of a
> different pass, see below).
>
> Both examples are compiled better if you make foo1 and foo2 static.
This really makes no sense to me! bar() is not affected by other TUs at all...
> In the latter case, you get exactly what you want, the structure is be
> split and only the used part survives. In the first example, you
> don't get a clone emitted which you probably don't need. Both of
> these transformation are done by a pass called interprocedural scalar
> replacement of aggregates (IPA-SRA), which specifically also aims to
> remove unused arguments, but it never creates multiple clones.
I like this pass :-) ... so, why does it work for the static case with bar2()
but doesn't work with bar1() ?
> I'm afraid you'd need to provide a strong real-world use-case to make
> me investigate how to make IPA-SRA clone so you might not need static
> and/or LTO because that would mean devising a cost/benefit
> (size/speedup) heuristics and that is not easy.
For now I'm just trying to understand why this isn't already happening. Then
I'll perhaps try to understand why clang does do this.
But - don't necessarily clone. IIUC, cloning would possibly mean removing that
parameter even though it's a field of a struct. But even if you _don't_ clone,
functions calling foo() should still not have to initialize that member. It
seems like we're talking about different optimizations.
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Subject: [Bug tree-optimization/63864] Missed late memory CSE
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--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> ---
Code looks pretty much the same for "test_ok" and "test_slow" since GCC 6 for
x86-64, and since GCC 7 for i686.
GCC 6.3 x86-64:
test_ok(float (*) [3], float, float, float, float, float):
mulss %xmm3, %xmm0
movss 4(%rdi), %xmm6
mulss %xmm3, %xmm1
mulss %xmm3, %xmm2
movss 12(%rdi), %xmm3
movaps %xmm0, %xmm5
addss %xmm4, %xmm1
movss (%rdi), %xmm0
addss %xmm4, %xmm5
addss %xmm4, %xmm2
mulss %xmm1, %xmm3
mulss %xmm5, %xmm0
mulss %xmm5, %xmm6
mulss 8(%rdi), %xmm5
addss %xmm3, %xmm0
movss 24(%rdi), %xmm3
mulss %xmm2, %xmm3
addss %xmm3, %xmm0
movss 16(%rdi), %xmm3
mulss %xmm1, %xmm3
mulss 20(%rdi), %xmm1
addss %xmm3, %xmm6
movss 28(%rdi), %xmm3
mulss %xmm2, %xmm3
mulss 32(%rdi), %xmm2
addss %xmm1, %xmm5
addss %xmm3, %xmm6
addss %xmm2, %xmm5
addss %xmm6, %xmm0
addss %xmm5, %xmm0
ret
test_slow(mat3&, float, float, float, float, float):
mulss %xmm3, %xmm0
mulss %xmm3, %xmm1
mulss %xmm2, %xmm3
movss 16(%rdi), %xmm2
movaps %xmm0, %xmm6
addss %xmm4, %xmm1
movss 4(%rdi), %xmm0
addss %xmm4, %xmm6
addss %xmm3, %xmm4
movss (%rdi), %xmm3
mulss %xmm1, %xmm2
mulss %xmm6, %xmm0
mulss %xmm6, %xmm3
mulss 8(%rdi), %xmm6
addss %xmm2, %xmm0
movss 28(%rdi), %xmm2
mulss %xmm4, %xmm2
addss %xmm2, %xmm0
movss 12(%rdi), %xmm2
mulss %xmm1, %xmm2
mulss 20(%rdi), %xmm1
addss %xmm2, %xmm3
movss 24(%rdi), %xmm2
mulss %xmm4, %xmm2
mulss 32(%rdi), %xmm4
addss %xmm6, %xmm1
addss %xmm2, %xmm3
addss %xmm4, %xmm1
addss %xmm3, %xmm0
addss %xmm1, %xmm0
ret
GCC 7.4 i686:
test_ok(float (*) [3], float, float, float, float, float):
flds 20(%esp)
flds 8(%esp)
fmul %st(1), %st
movl 4(%esp), %eax
fadds 24(%esp)
flds 12(%esp)
fmul %st(2), %st
fadds 24(%esp)
fxch %st(2)
fmuls 16(%esp)
fadds 24(%esp)
flds (%eax)
fmul %st(2), %st
flds 12(%eax)
fmul %st(4), %st
faddp %st, %st(1)
flds 24(%eax)
fmul %st(2), %st
faddp %st, %st(1)
flds 4(%eax)
fmul %st(3), %st
flds 16(%eax)
fmul %st(5), %st
faddp %st, %st(1)
flds 28(%eax)
fmul %st(3), %st
faddp %st, %st(1)
faddp %st, %st(1)
fxch %st(2)
fmuls 8(%eax)
fxch %st(3)
fmuls 20(%eax)
faddp %st, %st(3)
fmuls 32(%eax)
faddp %st, %st(2)
faddp %st, %st(1)
ret
test_slow(mat3&, float, float, float, float, float):
flds 20(%esp)
flds 8(%esp)
fmul %st(1), %st
movl 4(%esp), %eax
fadds 24(%esp)
flds 12(%esp)
fmul %st(2), %st
fadds 24(%esp)
fxch %st(2)
fmuls 16(%esp)
fadds 24(%esp)
flds 4(%eax)
fmul %st(2), %st
flds 16(%eax)
fmul %st(4), %st
faddp %st, %st(1)
flds 28(%eax)
fmul %st(2), %st
faddp %st, %st(1)
flds (%eax)
fmul %st(3), %st
flds 12(%eax)
fmul %st(5), %st
faddp %st, %st(1)
flds 24(%eax)
fmul %st(3), %st
faddp %st, %st(1)
faddp %st, %st(1)
fxch %st(2)
fmuls 8(%eax)
fxch %st(3)
fmuls 20(%eax)
faddp %st, %st(3)
fmuls 32(%eax)
faddp %st, %st(2)
faddp %st, %st(1)
ret
>From gcc-bugs-return-636085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:54:45 2019
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Subject: [Bug rtl-optimization/37516] ~(-2 - a) is not being optimized into a + 1
Date: Mon, 04 Mar 2019 12:54:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
A match.pd rule should be reasonably easy to write. Beware that ~a is not
undefined but -a - 1 might be if it overflows. That is
(simplify
(bit_not (minus INTEGER_CST@0 @1))
(plus @1 (minus (negate @0) { build_one_cst (type); }))
with the constant folding done at compile-time, caring for overflow in the
constant term. As said, not sure how to avoid @1 + new-cst from overflowing.
>From gcc-bugs-return-636086-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:58:12 2019
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Subject: [Bug tree-optimization/21982] GCC should combine adjacent stdio calls
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Steven Bosscher <steven at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed|2006-02-05 21:14:21 |2019-3-4
--- Comment #38 from Steven Bosscher <steven at gcc dot gnu.org> ---
What happened with Diego's patch?
(https://gcc.gnu.org/ml/gcc-patches/2005-06/msg00909.html)
>From gcc-bugs-return-636087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 12:59:11 2019
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Subject: [Bug other/89577] New: In the manual, replace -fprofile-arcs -ftest-coverage by the simpler --coverage
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Bug ID: 89577
Summary: In the manual, replace -fprofile-arcs -ftest-coverage
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Product: gcc
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The GCC manual Section 10 (gcov)
https://gcc.gnu.org/onlinedocs/gcc/Invoking-Gcov.html
https://gcc.gnu.org/onlinedocs/gcc/Gcov-and-Optimization.html
uses "-fprofile-arcs -ftest-coverage" while the simpler option --coverage could
be used instead (I also assume that --coverage may be better in general, as it
generates the right option when linking). I suggest the replacement.
>From gcc-bugs-return-636090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:03:49 2019
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Subject: [Bug c++/89576] [8/9 Regression] constexpr not working if implicitly captured in a lambda in a function template (gcc 8.3+)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
CC| |jakub at gcc dot gnu.org,
| |nathan at gcc dot gnu.org
Target Milestone|--- |8.4
Summary|constexpr not working if |[8/9 Regression] constexpr
|implicitly captured in a |not working if implicitly
|lambda in a function |captured in a lambda in a
|template (gcc 8.3+) |function template (gcc
| |8.3+)
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r268016. When not it template, it is still accepted.
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Subject: [Bug tree-optimization/14455] Structs that cannot alias are not SRA'd
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Steven Bosscher <steven at gcc dot gnu.org> changed:
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Subject: [Bug other/89394] libiberty :stack overflow in nm
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Cheng Wen <wcventure at 126 dot com> changed:
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CC| |wcventure at 126 dot com
--- Comment #4 from Cheng Wen <wcventure at 126 dot com> ---
This issue is similar to CVE-2018-18700 & CVE-2018-18701
>From gcc-bugs-return-636091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:06:44 2019
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Subject: [Bug middle-end/78824] multiple add should in my opinion be optimized to multiplication
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Steven Bosscher <steven at gcc dot gnu.org> changed:
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Subject: [Bug other/89394] libiberty :stack overflow in nm
Date: Mon, 04 Mar 2019 13:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89394
--- Comment #5 from Cheng Wen <wcventure at 126 dot com> ---
So many similar cases and repetitive CVEs.
This problem has been fixed before, but it has not been completely fixed.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85122
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85452
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87335
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87636
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87675
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87681
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Subject: [Bug tree-optimization/65964] [meta] Operand Shortening
Date: Mon, 04 Mar 2019 13:11:00 -0000
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Bug 65964 depends on bug 14844, which changed state.
Bug 14844 Summary: [tree-ssa] narrow types if wide result is not needed for unsigned types or when wrapping is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14844
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Subject: [Bug tree-optimization/14844] [tree-ssa] narrow types if wide result is not needed for unsigned types or when wrapping is true
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Subject: [Bug middle-end/19986] [meta-bug] fold missing optimizations (compared to RTL)
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Bug 19986 depends on bug 14844, which changed state.
Bug 14844 Summary: [tree-ssa] narrow types if wide result is not needed for unsigned types or when wrapping is true
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14844
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>From gcc-bugs-return-636096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:14:27 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89569] line number is not accurate on large file gcc compared to clang
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--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I don't think the word "accurate" is right here: both gcc and clang print the
wrong line number - they're just getting it wrong in different ways.
>From gcc-bugs-return-636097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:16:00 2019
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Subject: [Bug tree-optimization/83352] Missed optimization in math expression: sqrt(sqrt(a)) == pow(a, 1/4)
Date: Mon, 04 Mar 2019 13:15:00 -0000
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--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> ---
More than 1 year no explanation for how "pow(a, 1/4)" can be compiled
to faster code than "sqrt(sqrt(a))" => WONTFIX.
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Subject: [Bug target/86011] Inefficient code generated for ldivmod with constant value
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Subject: [Bug target/40072] Nonoptimal code - CMOVxx %eax,%edi; mov %edi,%eax; retq
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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89567] [missed-optimization] Should not be initializing unused struct parameter members
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--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Eyal Rozenberg from comment #4)
> > In the first excample, the interproceudral constant propagation pass
> > (IPA-CP) found that foo1 is so small that copying all of it might be
> > worth not passing the unused argument and so it does, that is why
> > you'll find function foo1 twice in the assembly.
>
> Why does this have anything to do with constant propagation? I also don't
> understand the sense in two identical copies.
The transformation literally removes a parameter from a function. All
(direct) callers in the same compilation unit then call the new clone,
all indirect clones and callers from other compilation units call the
old one, with the old calling convention. I understand that in your
simple testcase that does not matter but in others it might (and
IPA-CP is a high-level pass that does not know about physical
registers, calling conventions etc.).
>
> It also sounds like "the wrong optimization" is being used if it's not about
> noticing unused parameters.
You can call it that way if you like to. It was just easy to add
there, it makes a good job and has no practical disadvantages.
>
> > This functionality
> > in the pass is there just "on the side" and it is not easy to make it
> > also work with aggegates, not even desireable (that is the job of a
> > different pass, see below).
> >
> > Both examples are compiled better if you make foo1 and foo2 static.
>
> This really makes no sense to me! bar() is not affected by other TUs at
> all...
IPA-SRA primarily changes foo.
>
> > In the latter case, you get exactly what you want, the structure is be
> > split and only the used part survives. In the first example, you
> > don't get a clone emitted which you probably don't need. Both of
> > these transformation are done by a pass called interprocedural scalar
> > replacement of aggregates (IPA-SRA), which specifically also aims to
> > remove unused arguments, but it never creates multiple clones.
>
> I like this pass :-) ... so, why does it work for the static case with
> bar2() but doesn't work with bar1() ?
I don't understand your question, just make foo1 and/or foo2 static
and it will trigger. The pass needs to adjust all callers and
therefore only works on static functions because otherwise there may
be other call in other compilation units.
>
> > I'm afraid you'd need to provide a strong real-world use-case to make
> > me investigate how to make IPA-SRA clone so you might not need static
> > and/or LTO because that would mean devising a cost/benefit
> > (size/speedup) heuristics and that is not easy.
>
> For now I'm just trying to understand why this isn't already happening. Then
> I'll perhaps try to understand why clang does do this.
>
> But - don't necessarily clone. IIUC, cloning would possibly mean removing
> that parameter even though it's a field of a struct. But even if you _don't_
> clone, functions calling foo() should still not have to initialize that
> member. It seems like we're talking about different optimizations.
Indeed, you really have a IPA-DSE in your mind (DSE stands for dead
store elimination), that would only affect callers. We don't have
that, it might be an alternative for to IPA-SRA when we do cannot or
do not want to clone.
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Subject: [Bug tree-optimization/17217] not removing removal of nested structs
Date: Mon, 04 Mar 2019 13:34:00 -0000
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Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |WAITING
--- Comment #6 from Steven Bosscher <steven at gcc dot gnu.org> ---
What code is expected in this really old bug? Trunk x86-64 today:
int h(int *a);
struct G
{
int t;
int t1;
};
static int g1(struct G*);
int f1(int i, int j)
{
struct G nestedf1={i,j};
return g1(&nestedf1)+nestedf1.t1;
}
__attribute__((noinline))
static int g1(struct G *nestedf1)
{
return h(&nestedf1->t)+ nestedf1->t1;
}
g1(G*):
pushq %rbx
movq %rdi, %rbx
call h(int*)
addl 4(%rbx), %eax
popq %rbx
ret
f1(int, int):
subq $24, %rsp
movl %edi, 8(%rsp)
leaq 8(%rsp), %rdi
movl %esi, 12(%rsp)
call g1(G*)
addl 12(%rsp), %eax
addq $24, %rsp
ret
>From gcc-bugs-return-636102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:39:33 2019
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Subject: [Bug gcov-profile/89577] In the manual, replace -fprofile-arcs -ftest-coverage by the simpler --coverage
Date: Mon, 04 Mar 2019 13:39:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-04
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Yep, let me update that.
>From gcc-bugs-return-636103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:41:40 2019
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Subject: [Bug tree-optimization/89437] [9 regression] incorrect result for sinl (atanl (x))
Date: Mon, 04 Mar 2019 13:41:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Wilco <wilco at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-636104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 13:46:53 2019
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Subject: [Bug tree-optimization/17217] not removing removal of nested structs
Date: Mon, 04 Mar 2019 13:46:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |UNCONFIRMED
Ever confirmed|1 |0
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Steven Bosscher from comment #6)
> What code is expected in this really old bug? Trunk x86-64 today:
> __attribute__((noinline))
g1 is not to be noinline for the nested testcase.
The un-nested testcase is actually should not be optimized.
The nested function testcase shows the issue.
For the original testcase:
int h(int *a);
int f(int i, int j)
{
int t = i;
int t1 = j;
int g()
{
return h(&t) + t1;
}
return g() + t1;
}
We should optimize this to the same as:
int h(int *a);
int f(int i, int j)
{
return h(&t) + 2 * j;
}
>From gcc-bugs-return-636105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 14:05:30 2019
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Subject: [Bug target/89578] New: [9 Regression] 5% runtime regression for 481.wrf at -Ofast -flto
Date: Mon, 04 Mar 2019 14:05:00 -0000
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Bug ID: 89578
Summary: [9 Regression] 5% runtime regression for 481.wrf at
-Ofast -flto
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I see with -march=native on haswell in addition to -Ofast -flto ~5% runtime
regression for 481.wrf with the last known good rev. being r269093 and
the first known bad one r269146.
>From gcc-bugs-return-636106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 14:06:25 2019
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Subject: [Bug c++/89538] [7.3.0] GCC miscompiling LLVM because of wrong vectorization
Date: Mon, 04 Mar 2019 14:06:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
>
> So I investigated further to figure out which instruction actually sets
> "0x0" to the new location, and found that instruction 202aef4 below is the
> one
>
> 202aed0: 48 c7 00 00 00 00 00 movq $0x0,(%rax)
> 202aed7: f3 0f 6f 08 movdqu (%rax),%xmm1
> 202aedb: 48 83 c0 20 add $0x20,%rax
> 202aedf: 48 83 c1 20 add $0x20,%rcx
> 202aee3: 48 c7 40 f0 00 00 00 movq $0x0,-0x10(%rax)
> 202aeea: 00
> 202aeeb: f3 0f 6f 40 f0 movdqu -0x10(%rax),%xmm0
> 202aef0: 0f 11 49 e0 movups %xmm1,-0x20(%rcx)
> 202aef4: 0f 11 41 f0 movups %xmm0,-0x10(%rcx)
> 202aef8: 48 39 f8 cmp %rdi,%rax
> 202aefb: 75 d3 jne 202aed0
What's the name of the function this assembly belongs to?
Can you please test the 7.4.0 release?
>From gcc-bugs-return-636107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 14:07:55 2019
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Subject: [Bug target/89578] [9 Regression] 5% runtime regression for 481.wrf at -Ofast -flto
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-04
CC| |marxin at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Also seen here:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=2.270.0&plot.1=7.270.0&plot.2=4.270.0&plot.3=8.270.0
I'll bisect that.
>From gcc-bugs-return-636108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 14:08:48 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89578] [9 Regression] 5% runtime regression for 481.wrf at -Ofast -flto
Date: Mon, 04 Mar 2019 14:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|needs-bisection |
Status|ASSIGNED |UNCONFIRMED
Last reconfirmed|2019-03-04 00:00:00 |
CC| |hjl.tools at gmail dot com
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|1 |0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Suspicious changes include the fix for PR87609 and the new
pass_remove_partial_avx_dependency. I see no other relevant changes.
>From gcc-bugs-return-636109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 14:36:33 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68211] Free __m128d subreg of double
Date: Mon, 04 Mar 2019 14:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68211
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |NEW
Last reconfirmed|2016-04-19 00:00:00 |2019-3-4
--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> ---
"g++ (Compiler-Explorer-Build) 9.0.1 20190303 (experimental)":
#include <x86intrin.h>
double sqrt_up(double x){
__m128d y = { x, 0 };
return _mm_cvtsd_f64(_mm_sqrt_round_sd(y, y,
_MM_FROUND_TO_POS_INF|_MM_FROUND_NO_EXC));
}
double f(double x)
{
return __builtin_sqrt(x);
}
sqrt_up(double):
vmovq %xmm0, %xmm0
vsqrtsd {ru-sae}, %xmm0, %xmm0, %xmm0
ret
f(double):
vsqrtsd %xmm0, %xmm0, %xmm0
ret
>From gcc-bugs-return-636110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 15:08:56 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89578] [9 Regression] 5% runtime regression for 481.wrf at -Ofast -flto
Date: Mon, 04 Mar 2019 15:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89578
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
Ever confirmed|0 |1
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> Suspicious changes include the fix for PR87609 and the new
> pass_remove_partial_avx_dependency. I see no other relevant changes.
Yes, started with r269098.
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From: "abigail.buccaneer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89579] New: -Wclobbered warning false positive when compiling with -Og
Date: Mon, 04 Mar 2019 15:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89579
Bug ID: 89579
Summary: -Wclobbered warning false positive when compiling with
-Og
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic, rejects-valid
Severity: normal
Priority: P3
Component: c++
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Reporter: abigail.buccaneer at gmail dot com
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Created attachment 45884
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45884&action=edit
Minimal reproduction
When compiling with `-Wclobbered -Og`, we see false positives from the
-Wclobbered warning. These don't occur with any other optimization level. This
breaks our build under `-Wextra -Werror -Og`.
Attached is a minimal reproduction test case. This bug is present from GCC
5.5.0 to GCC trunk (9.0.1 20190303). GCC 5.4.0 and below are not affected.
>From gcc-bugs-return-636112-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 15:20:33 2019
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From: "eric at efcs dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89580] New: overload resolution for pointers fails to consider conversion operator
Date: Mon, 04 Mar 2019 15:20:00 -0000
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Bug ID: 89580
Summary: overload resolution for pointers fails to consider
conversion operator
Product: gcc
Version: 9.0
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I believe the following code is valid and should be accepted.
// g++ -std=c++11
struct Foo {
template <class T> operator T() const;
};
// error: no match for 'operator==' (operand types are 'Foo' and 'void*')
bool R = (Foo{} == static_cast<void*>(nullptr));
Note that when Foo's conversion operator is declared as `operator T*()`, the
code is accepted.
See https://godbolt.org/z/nc43wx
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Mon, 04 Mar 2019 15:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-04
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Oops, caused by my previous fold_checksum_tree fix r269303 aka PR89503.
Short testcase:
#define TEN(x) x##0, x##1, x##2, x##3, x##4, x##5, x##6, x##7, x##8, x##9,
#define HUNDRED(x) TEN(x##0) TEN(x##1) TEN(x##2) TEN(x##3) TEN(x##4) \
TEN(x##5) TEN(x##6) TEN(x##7) TEN(x##8) TEN(x##9)
int foo (int, ...);
int
bar (void)
{
return (foo (HUNDRED (1) 0));
}
>From gcc-bugs-return-636114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 15:44:29 2019
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Subject: [Bug bootstrap/89560] [9 regression] ICE In function 'rtx_def* gen_vec_extract_lo_v64qi(rtx, rtx)'
Date: Mon, 04 Mar 2019 15:44:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45885
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45885&action=edit
gcc9-pr89560.patch
Fix the buffer overflow. Unlike most other trees, CALL_EXPR has variable size,
on 64-bit targets 48 + call_expr_nargs * 8, while fold_checksum_tree was using
fixed size 216 byte long buffer, so any CALL_EXPR with 22 or more arguments and
TREE_NO_WARNING flag set caused buffer overflow.
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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88530] [8 Regression] AArch64 Unsupported options passed to assemblers when it doesn't need to.
Date: Mon, 04 Mar 2019 15:49:00 -0000
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--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Author: tnfchris
Date: Mon Mar 4 15:48:49 2019
New Revision: 269366
URL: https://gcc.gnu.org/viewcvs?rev=269366&root=gcc&view=rev
Log:
AArch64: Make test options_set_10.c not run on native.
The test options_set_10.c shouldn't run when cross compiled.
In addition to gating it on linux I'm also gating it on native now.
gcc/testsuite/ChangeLog:
PR target/88530
* gcc.target/aarch64/options_set_10.c:
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/aarch64/options_set_10.c
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From: "yyc1992 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89581] New: Unneeded stack alignment on windows x86
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Bug ID: 89581
Summary: Unneeded stack alignment on windows x86
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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Priority: P3
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On windows, when compiling the following code with ` gcc -mavx2 a.c -o - -S -O3
-g0 -fno-asynchronous-unwind-tables -fomit-frame-pointer -Wall -Wextra`
```
typedef struct {
double x1;
double x2;
} vdouble __attribute__((aligned(16)));
vdouble f(vdouble x, vdouble y)
{
return (vdouble){x.x1 + y.x1, x.x2 + y.x2};
}
```
I got
```
pushq %rbp
vmovdqa (%r8), %xmm0
movq %rcx, %rax
vaddpd (%rdx), %xmm0, %xmm0
movq %rsp, %rbp
andq $-16, %rsp
vmovaps %xmm0, (%rcx)
leave
ret
```
which include 4 extra instructions to align the stack without actually using
it....
FWIW, clang has a similar problem on linux...
https://bugs.llvm.org/show_bug.cgi?id=40844
Also worth noting that with -O2 all three vector instructions are splitted into
scalar ones whereas clang does this transformation at -O2...
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89582] New: Suboptimal code generated for floating point struct in -O3 compare to -O2
Date: Mon, 04 Mar 2019 16:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89582
Bug ID: 89582
Summary: Suboptimal code generated for floating point struct in
-O3 compare to -O2
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: yyc1992 at gmail dot com
Target Milestone: ---
When testing the code for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89581 on
linux, I noticed that the code seems suboptimum when compiled under -O3 rather
than -O2 on linux x64.
```
typedef struct {
double x1;
double x2;
} vdouble __attribute__((aligned(16)));
vdouble f(vdouble x, vdouble y)
{
return (vdouble){x.x1 + y.x1, x.x2 + y.x2};
}
```
Compiled with `-O2` produces
```
f:
addsd %xmm3, %xmm1
addsd %xmm2, %xmm0
ret
```
With `-O3` or `-Ofast`, however, the code produced is,
```
f:
movq %xmm0, -40(%rsp)
movq %xmm1, -32(%rsp)
movapd -40(%rsp), %xmm4
movq %xmm2, -24(%rsp)
movq %xmm3, -16(%rsp)
addpd -24(%rsp), %xmm4
movaps %xmm4, -40(%rsp)
movsd -32(%rsp), %xmm1
movsd -40(%rsp), %xmm0
ret
```
It seems that gcc tries to use the vector instruction but had to use the stack
for that. I did a quick benchmark which confirms that the -O3 version is much
slower than the -O2 version.
Clang produces
```
f:
addsd %xmm2, %xmm0
addsd %xmm3, %xmm1
retq
```
As long as any optimizations are on, which seems appropriate.
>From gcc-bugs-return-636118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 16:21:22 2019
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From: "yyc1992 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89581] Unneeded stack alignment on windows x86
Date: Mon, 04 Mar 2019 16:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89581
--- Comment #1 from Yichao Yu <yyc1992 at gmail dot com> ---
The problem is still there when compiled with -O2
```
f:
pushq %rbp
vmovq (%r8), %xmm1
movq %rcx, %rax
vmovq 8(%r8), %xmm0
vaddsd (%rdx), %xmm1, %xmm1
vaddsd 8(%rdx), %xmm0, %xmm0
movq %rsp, %rbp
andq $-16, %rsp
vmovsd %xmm1, (%rcx)
vmovsd %xmm0, 8(%rcx)
leave
ret
```
but is not there under `-O2` when the arguments and results are passed
explicitly by reference.
```
void f2(vdouble *res, const vdouble *x, const vdouble *y)
{
*res = (vdouble){x->x1 + y->x1, x->x2 + y->x2};
}
```
```
f2:
vmovsd 8(%rdx), %xmm0
vmovsd (%rdx), %xmm1
vaddsd 8(%r8), %xmm0, %xmm0
vaddsd (%r8), %xmm1, %xmm1
vmovsd %xmm0, 8(%rcx)
vmovsd %xmm1, (%rcx)
```
The problem comes back, however, with the explicit pass by reference version
when compiled under -O3
```
f2:
pushq %rbp
vmovapd (%rdx), %xmm0
vaddpd (%r8), %xmm0, %xmm0
movq %rsp, %rbp
andq $-16, %rsp
vmovaps %xmm0, (%rcx)
leave
ret
```
>From gcc-bugs-return-636119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 16:21:37 2019
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From: "simon at pushface dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/89583] New: GNAT.Sockets.Bind_Socket fails with IPv4 address
Date: Mon, 04 Mar 2019 16:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89583
Bug ID: 89583
Summary: GNAT.Sockets.Bind_Socket fails with IPv4 address
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
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Created attachment 45886
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45886&action=edit
Reproducer
On Darwin 18.2.0 (Mojave), gcc (GCC) 9.0.1 20190219 (experimental),
GNAT.Sockets.Bind_Socket fails if given an IPv4 address.
I believe that this is caused by the introduction of the new
IPv6-aware Sockaddr, which is an Unchecked_Union where the size
in bytes can be 4 (unspec), 16 (IPv4) or 28 (IPv6) bytes; when
Bind_Socket says
Sin : aliased Sockaddr;
Len : constant C.int := Sin'Size / 8;
begin
Set_Address (Sin'Unchecked_Access, Address);
Res := C_Bind (C.int (Socket), Sin'Address, Len);
it sets Len to be 28, and macOS (darwin 15, darwin 18) says this
is an invalid argument; see demonstrator.
>From gcc-bugs-return-636120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 16:22:01 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89579] -Wclobbered warning false positive when compiling with -Og
Date: Mon, 04 Mar 2019 16:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89579
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |law at gcc dot gnu.org,
| |redi at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is caused by the uninitialized __capacity variable in
basic_string& operator=(basic_string&& __str);
The code is like:
// Just move the allocated pointer, our allocator can free it.
pointer __data = nullptr;
size_type __capacity;
if (!_M_is_local())
{
if (_Alloc_traits::_S_always_equal())
{
// __str can reuse our existing storage.
__data = _M_data();
__capacity = _M_allocated_capacity;
}
else // __str can't use it, so free it.
_M_destroy(_M_allocated_capacity);
}
_M_data(__str._M_data());
_M_length(__str.length());
_M_capacity(__str._M_allocated_capacity);
if (__data)
{
__str._M_data(__data);
__str._M_capacity(__capacity);
}
else
__str._M_data(__str._M_local_buf);
Although __capacity is never actually used uninitialized (and e.g. the uninit
warning pass figures that out), because it is used only if __data is non-NULL
and __data is non-NULL only if __capacity is also initialized, with -Og or e.g.
with -O1 -fno-tree-dominator-opts, if we don't perform jump threading, we end
up with something like:
if (&dummy.D.19123._M_local_buf != _35)
goto <bb 14>; [70.00%]
else
goto <bb 15>; [30.00%]
<bb 14> [local count: 173485181]:
__capacity_44 = dummy.D.19123._M_allocated_capacity;
<bb 15> [local count: 247835973]:
# __data_47 = PHI <_35(14), 0B(13)>
# __capacity_48 = PHI <__capacity_44(14), __capacity_50(D)(13)>
dummy._M_dataplus._M_p = _37;
_45 = D.24766._M_string_length;
dummy._M_string_length = _45;
_46 = D.24766.D.19123._M_allocated_capacity;
dummy.D.19123._M_allocated_capacity = _46;
if (__data_47 != 0B)
goto <bb 16>; [70.00%]
else
goto <bb 17>; [30.00%]
<bb 16> [local count: 173485181]:
D.24766._M_dataplus._M_p = __data_47;
D.24766.D.19123._M_allocated_capacity = __capacity_48;
goto <bb 18>; [100.00%]
before expansion and later when IRA checks for the clobbered vars, it does:
if (VAR_P (decl)
&& DECL_RTL_SET_P (decl)
&& REG_P (DECL_RTL (decl))
&& regno_clobbered_at_setjmp (setjmp_crosses, REGNO (DECL_RTL
(decl))))
where the last one uses:
return ((REG_N_SETS (regno) > 1
|| REGNO_REG_SET_P (df_get_live_out (ENTRY_BLOCK_PTR_FOR_FN (cfun)),
regno))
&& REGNO_REG_SET_P (setjmp_crosses, regno));
While REG_N_SETS is just 1 here for the pseudo used for __capacity, because of
the uninitialized use in the PHI it is considered live on the entry block and
that is why the warning is emitted.
Changing libstdc++ code to size_type __capacity = 0; makes the warning away,
though we'd need to check if it doesn't result in worse generated code.
>From gcc-bugs-return-636122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 16:22:18 2019
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Subject: [Bug c++/89579] -Wclobbered warning false positive when compiling with -Og
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89579
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-04
Ever confirmed|0 |1
>From gcc-bugs-return-636121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 04 16:22:10 2019
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