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* [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested
@ 2014-08-22 18:34 manu at gcc dot gnu.org
2014-08-26 10:56 ` [Bug testsuite/62234] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: manu at gcc dot gnu.org @ 2014-08-22 18:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
Bug ID: 62234
Summary: warnings/errors from LTO cannot be tested
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: manu at gcc dot gnu.org
As discussed here: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61913#c11
there is no way to test warnings/errors produced by LTO, so whatever we add is
due to get broken sooner or later (or be broken from the start like PR61913
shows).
Please, can someone with dejagnu foo fix this?
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/62234] warnings/errors from LTO cannot be tested
2014-08-22 18:34 [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested manu at gcc dot gnu.org
@ 2014-08-26 10:56 ` rguenth at gcc dot gnu.org
2015-03-24 9:17 ` manu at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-08-26 10:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-08-26
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/62234] warnings/errors from LTO cannot be tested
2014-08-22 18:34 [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested manu at gcc dot gnu.org
2014-08-26 10:56 ` [Bug testsuite/62234] " rguenth at gcc dot gnu.org
@ 2015-03-24 9:17 ` manu at gcc dot gnu.org
2015-04-30 3:10 ` hubicka at gcc dot gnu.org
2018-02-13 20:58 ` egallager at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: manu at gcc dot gnu.org @ 2015-03-24 9:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |61913
--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Keep track of all the bugs that do not have tests because of this one.
>From gcc-bugs-return-481342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 24 08:49:04 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/65536] [5 regression] LTO line number information garbled
Date: Tue, 24 Mar 2015 09:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65536
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dodji at gcc dot gnu.org,
| |manu at gcc dot gnu.org
--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Even a large, but self-contained testcase would be helpful. Probably one can
figure out where the problem is by detecting that an overflow is about to
happen.
I don't understand how linemaps are supposed to work in LTO mode. Are they
exactly the same as without LTO and saved to the object file? Are they
recomputed? For all input files into the same line_table or one line_table for
each file separately?
Linemaps are designed to encode one single main file plus files included by
this main file. To encode multiple files, you will need multiple linemaps,
re-encoding everything into a single linemap seems fragile.
CCing Dodji, he may have a better idea where linemap may be failing.
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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/65533] [5 Regression] 252.eon in SPEC CPU 2000 failed to build
Date: Tue, 24 Mar 2015 09:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide533
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> Hmm, looks basically ok, though doing
>
> vect_free_slp_tree (child);
>
> from the cleanup before
>
> /* If the SLP build for operand zero failed and operand zero
> and one can be commutated try that for the scalar stmts
> that failed the match. */
> if (i == 0
> ...
>
> and simply re-allocating child with
>
> child = vect_create_new_slp_node (oprnd_info->def_stmts);
> if (!child)
> {
> vect_free_oprnd_info (oprnds_info);
> return false;
> }
>
> might be "simpler".
Well, it would be more costly (having to deallocate and allocate everything
again), and not really much shorter in the source. Only if we in the future
popluate early not just the SLP_TREE_CHILDREN vector, but various further
things your version might be better from maintanance POV.
> Your patch is ok if it is already tested.
Not yet tested, but bootstraps/regtests already in progress. If you feel
strongly about this, I can surely kill those, write a new patch and redo that.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/62234] warnings/errors from LTO cannot be tested
2014-08-22 18:34 [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested manu at gcc dot gnu.org
2014-08-26 10:56 ` [Bug testsuite/62234] " rguenth at gcc dot gnu.org
2015-03-24 9:17 ` manu at gcc dot gnu.org
@ 2015-04-30 3:10 ` hubicka at gcc dot gnu.org
2018-02-13 20:58 ` egallager at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: hubicka at gcc dot gnu.org @ 2015-04-30 3:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01538.html has a testcase that
should be added once this is fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug testsuite/62234] warnings/errors from LTO cannot be tested
2014-08-22 18:34 [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested manu at gcc dot gnu.org
` (2 preceding siblings ...)
2015-04-30 3:10 ` hubicka at gcc dot gnu.org
@ 2018-02-13 20:58 ` egallager at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: egallager at gcc dot gnu.org @ 2018-02-13 20:58 UTC (permalink / raw)
To: gcc-bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #3)
> https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01538.html has a testcase that
> should be added once this is fixed.
I don't see a testcase, just a patch...
>From gcc-bugs-return-593214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 20:58:59 2018
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/62234] warnings/errors from LTO cannot be tested
Date: Tue, 13 Feb 2018 20:59:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Jan Hubicka from comment #3)
> > https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01538.html has a testcase that
> > should be added once this is fixed.
>
> I don't see a testcase, just a patch...
Oh wait never mind the testcase is at the top separate from the patch
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84375] New: [8 Regression] ICE with friend in local class
Date: Tue, 13 Feb 2018 21:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84375
Bug ID: 84375
Summary: [8 Regression] ICE with friend in local class
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
CC: nathan at gcc dot gnu.org
Blocks: 12944
Target Milestone: ---
The following invalid testcase triggers an ICE on trunk:
===========================
void foo()
{
struct A
{
friend void A();
};
}
===========================
bug.cc: In function 'void foo()':
bug.cc:5:19: error: friend declaration 'void A()' in local class without prior
local declaration
friend void A();
^
bug.cc:6:4: internal compiler error: in pop_local_binding, at
cp/name-lookup.c:2062
};
^
0x61f401 pop_local_binding(tree_node*, tree_node*)
../../gcc/gcc/cp/name-lookup.c:2062
0x8962ad poplevel(int, int, int)
../../gcc/gcc/cp/decl.c:776
0x99e5c3 do_poplevel(tree_node*)
../../gcc/gcc/cp/semantics.c:451
0x9a0149 finish_compound_stmt(tree_node*)
../../gcc/gcc/cp/semantics.c:1450
0x91cd0f cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11211
0x933460 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21747
0x933460 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21784
0x933d10 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26685
0x934a27 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:26601
0x934a27 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19473
0x93bac8 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13038
0x93c8d8 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x940832 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12761
0x940c41 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12637
0x940f34 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4559
0x940f34 c_parse_file()
../../gcc/gcc/cp/parser.c:38857
0xa3f566 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
The regression was introduced between 2017-05-19 and 2017-05-25.
Nathan, this might be related to your name-lookup changes.
Would you mind having a look?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12944
[Bug 12944] [meta-bug] C++ name-lookup problems
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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/84313] [F08] reject procedure pointers in COMMON blocks
Date: Tue, 13 Feb 2018 21:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84313
--- Comment #2 from janus at gcc dot gnu.org ---
Author: janus
Date: Tue Feb 13 21:00:37 2018
New Revision: 257636
URL: https://gcc.gnu.org/viewcvs?rev=257636&root=gcc&view=rev
Log:
2018-02-13 Janus Weil <janus@gcc.gnu.org>
PR fortran/84313
* symbol.c (check_conflict): Reject procedure pointers in common
blocks.
2018-02-13 Janus Weil <janus@gcc.gnu.org>
PR fortran/84313
* gfortran.dg/proc_ptr_common_1.f90: Fix invalid test case,
add necessary compiler options.
* gfortran.dg/proc_ptr_common_2.f90: Add missing error message.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/symbol.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/proc_ptr_common_1.f90
trunk/gcc/testsuite/gfortran.dg/proc_ptr_common_2.f90
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From: "nathan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84375] [8 Regression] ICE with friend in local class
Date: Tue, 13 Feb 2018 21:18:00 -0000
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-13
Assignee|unassigned at gcc dot gnu.org |nathan at gcc dot gnu.org
Ever confirmed|0 |1
>From gcc-bugs-return-593218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 21:18:17 2018
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Subject: [Bug fortran/80945] Invalid code with allocatable character array in READ/WRITE statement
Date: Tue, 13 Feb 2018 21:21:00 -0000
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Still fails with current trunk.
Code from comment#1, somewhat simplified:
program main
implicit none
integer:: i
integer, parameter:: N = 10
character(len=:), dimension(:),allocatable:: ca
allocate(character(len=N):: ca(3))
ca(1) = "foo"
ca(2) = "bar"
ca(3) = "xyzzy"
write (*, '(3A5)') ca(1:3)
end program
This yields on gcc110:
foo foo foo
Looking at the tree dump, we see
MAIN__ ()
{
integer(kind=8) .ca;
struct array01_unknown ca;
bitsizetype D.2078;
sizetype D.2079;
D.2078 = (bitsizetype) (sizetype) NON_LVALUE_EXPR <.ca> * 8;
D.2079 = (sizetype) NON_LVALUE_EXPR <.ca>;
and later
{
integer(kind=4) overflow.0;
.ca = 10;
ca.dtype = {.elem_len=(unsigned long) SAVE_EXPR <(sizetype) NON_LVALUE_EXPR
<.ca>>, .rank=1, .type=6};
...
_gfortran_st_write (&dt_parm.1);
{
struct array01_unknown parm.2;
parm.2.dtype = {.elem_len=(unsigned long) SAVE_EXPR <D.2079>, .rank=1,
.type=6};
parm.2.dim[0].lbound = 1;
parm.2.dim[0].ubound = 3;
parm.2.dim[0].stride = 1;
parm.2.data = (void *) &(*(character(kind=1)[0:][1:.ca] * restrict)
ca.data)[1 - ca.dim[0].lbound];
parm.2.offset = ca.offset;
_gfortran_transfer_array_write (&dt_parm.1, &parm.2, 1, .ca);
so the dtype gets its elem_len from the uninitialized copy of .ca
instead of the correctly initialized value later.
Paul, does this ring any bells?
>From gcc-bugs-return-593219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 21:21:48 2018
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84376] New: [7/8 Regression] ICE with missing template parameter
Date: Tue, 13 Feb 2018 21:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84376
Bug ID: 84376
Summary: [7/8 Regression] ICE with missing template parameter
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
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Target Milestone: ---
The following invalid code snippet (compiled with "-std=c++1z")
triggers an ICE since GCC 7.1.0:
=================================================
template<int> struct A {};
template<typename T> T foo() { return T(); }
template<> A foo<A>();
=================================================
bug.cc:5:21: internal compiler error: tree check: expected identifier_node,
have template_id_expr in dguide_name_p, at cp/pt.c:25461
template<> A foo<A>();
^
0x78a296 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9335
0x63283b tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3132
0x63283b dguide_name_p(tree_node*)
../../gcc/gcc/cp/pt.c:25461
0x8a1be9 grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*,
decl_context, int, tree_node**)
../../gcc/gcc/cp/decl.c:11020
0x8a49e6 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc/gcc/cp/decl.c:4950
0x934399 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19569
0x93abea cp_parser_single_declaration
../../gcc/gcc/cp/parser.c:27141
0x93b7f7 cp_parser_explicit_specialization
../../gcc/gcc/cp/parser.c:16637
0x9409b6 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12707
0x940c41 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12637
0x940f34 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4559
0x940f34 c_parse_file()
../../gcc/gcc/cp/parser.c:38857
0xa3f566 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
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Subject: [Bug c++/84333] [6/7/8 Regression] ICE with ternary operator in template function
Date: Tue, 13 Feb 2018 21:29:00 -0000
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--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Feb 13 21:23:22 2018
New Revision: 257638
URL: https://gcc.gnu.org/viewcvs?rev=257638&root=gcc&view=rev
Log:
/cp
2018-02-13 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84333
* call.c (build_conditional_expr_1): Use cp_save_expr instead of
save_expr for the G++ extension.
/testsuite
2018-02-13 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84333
* g++.dg/template/sizeof16.C: New.
* g++.dg/template/sizeof17.C: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/template/sizeof16.C
trunk/gcc/testsuite/g++.dg/template/sizeof17.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug testsuite/62234] warnings/errors from LTO cannot be tested
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I added support for this in r256801:
dg-lto-warning and dg-lto-message
https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00257.html
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Subject: [Bug fortran/84313] [F08] reject procedure pointers in COMMON blocks
Date: Tue, 13 Feb 2018 21:34:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.0
--- Comment #3 from janus at gcc dot gnu.org ---
Fixed with r257636. Closing.
>From gcc-bugs-return-593222-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 21:31:54 2018
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Subject: [Bug c/82210] [6/7 Regression] Having _Alignas in a struct with VLAs causes writing to one array to overwrite another
Date: Tue, 13 Feb 2018 21:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] Having |[6/7 Regression] Having
|_Alignas in a struct with |_Alignas in a struct with
|VLAs causes writing to one |VLAs causes writing to one
|array to overwrite another |array to overwrite another
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug testsuite/84094] several correctness issues in gfortran.dg
Date: Tue, 13 Feb 2018 21:35:00 -0000
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Bug 84094 depends on bug 84313, which changed state.
Bug 84313 Summary: [F08] reject procedure pointers in COMMON blocks
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84313
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----------------------------------------------------------------------------
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Subject: [Bug middle-end/46786] ICE: verify_stmts failed: statement marked for throw, but doesn't with -fopenmp -fnon-call-exceptions
Date: Tue, 13 Feb 2018 21:36:00 -0000
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |reichelt at gcc dot gnu.org
Known to work| |4.6.0
Resolution|--- |FIXED
Known to fail|4.6.0 |4.4.0, 4.5.4
--- Comment #1 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
This is fixed since GCC 4.6.0.
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84333] [6/7 Regression] ICE with ternary operator in template function
Date: Tue, 13 Feb 2018 21:36:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] ICE with |[6/7 Regression] ICE with
|ternary operator in |ternary operator in
|template function |template function
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
>From gcc-bugs-return-593227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 21:36:16 2018
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/62234] warnings/errors from LTO cannot be tested
Date: Tue, 13 Feb 2018 21:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62234
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #6)
> I added support for this in r256801:
> dg-lto-warning and dg-lto-message
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00257.html
So can this be closed as FIXED then?
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Subject: [Bug testsuite/62234] warnings/errors from LTO cannot be tested
Date: Tue, 13 Feb 2018 21:39:00 -0000
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--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Maybe keep it open until tests have been added for the various bugs referred to
here?
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Subject: [Bug jit/64089] libgccjit.so.0.0.1 linkage failure on darwin
Date: Tue, 13 Feb 2018 21:39:00 -0000
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--- Comment #15 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch for the linker issue:
https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00776.html
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Subject: [Bug jit/84288] Support jit on Solaris
Date: Tue, 13 Feb 2018 21:41:00 -0000
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--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch for the linker issue:
https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00776.html
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Subject: [Bug c++/84364] [8 Regression] -Weffc++ warns on "return *this" in template after r253599
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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> ---
Fixed.
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Subject: [Bug c++/84364] [8 Regression] -Weffc++ warns on "return *this" in template after r253599
Date: Tue, 13 Feb 2018 21:42:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 13 21:40:35 2018
New Revision: 257640
URL: https://gcc.gnu.org/viewcvs?rev=257640&root=gcc&view=rev
Log:
PR c++/84364
* typeck.c (check_return_expr): Don't emit -Weffc++ warning
about return other than *this in assignment operators if
retval is type dependent expression.
* g++.dg/warn/effc4.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/effc4.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/81930] [meta-bug] Issues with -Weffc++
Date: Tue, 13 Feb 2018 21:50:00 -0000
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Bug 81930 depends on bug 84364, which changed state.
Bug 84364 Summary: [8 Regression] -Weffc++ warns on "return *this" in template after r253599
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84364
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug c++/84376] [7/8 Regression] ICE with missing template parameter
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-13
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks.
Confirmed. Started with r242018.
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Subject: [Bug c++/84364] [8 Regression] -Weffc++ warns on "return *this" in template after r253599
Date: Tue, 13 Feb 2018 21:54:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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CC| |victor at paleologue dot fr
--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
*** Bug 77984 has been marked as a duplicate of this bug. ***
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Subject: [Bug c++/77984] Invalid warning on templated operator= with -Weffc++
Date: Tue, 13 Feb 2018 21:54:00 -0000
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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> ---
Looks like this was duplicated and then fixed as PR c++/84364.
*** This bug has been marked as a duplicate of bug 84364 ***
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Subject: [Bug target/84365] gcc.target/powerpc/altivec-7-le.c fails on power9
Date: Tue, 13 Feb 2018 21:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84365
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Tue Feb 13 21:52:12 2018
New Revision: 257641
URL: https://gcc.gnu.org/viewcvs?rev=257641&root=gcc&view=rev
Log:
PR target/84365
* gcc.target/powerpc/altivec-7-le.c: Also match lxv when compiling
with -mcpu=power9.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/altivec-7-le.c
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Subject: [Bug c++/81930] [meta-bug] Issues with -Weffc++
Date: Tue, 13 Feb 2018 22:04:00 -0000
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Bug 81930 depends on bug 77984, which changed state.
Bug 77984 Summary: Invalid warning on templated operator= with -Weffc++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77984
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Subject: [Bug testsuite/84370] Invalid option used in test case gcc.target/powerpc/builtins-3-p9-runnable.c
Date: Tue, 13 Feb 2018 22:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84370
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Tue Feb 13 22:04:00 2018
New Revision: 257642
URL: https://gcc.gnu.org/viewcvs?rev=257642&root=gcc&view=rev
Log:
PR target/84370
* gcc.target/powerpc/builtins-3-p9-runnable.c: Remove deprecated
option.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/builtins-3-p9-runnable.c
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Subject: [Bug libgomp/65904] Memory corruption with acc_shutdown, nvptx offloading, libgomp.oacc-c-c++-common/asyncwait-1.c
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
CC| |egallager at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to jules from comment #1)
> Patch posted: https://gcc.gnu.org/ml/gcc-patches/2015-05/msg00021.html
adding "patch" keyword
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Subject: [Bug rtl-optimization/84169] [8 Regression] wrong code with u128 multiplication result at aarch64 -O
Date: Tue, 13 Feb 2018 22:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84169
--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Feb 13 22:12:55 2018
New Revision: 257644
URL: https://gcc.gnu.org/viewcvs?rev=257644&root=gcc&view=rev
Log:
combine: Update links correctly for new I2 (PR84169)
If there is a LOG_LINK between two insns, this means those two insns
can be combined, as far as dataflow is concerned. There never should
be a LOG_LINK between two unrelated insns. If there is one, combine
will try to combine the insns without doing all the needed checks if
the earlier destination is used before the later insn, etc.
Unfortunately we do not update the LOG_LINKs correctly in some cases.
This patch fixes at least some of those cases.
PR rtl-optimization/84169
* combine.c (try_combine): New variable split_i2i3. Set it to true if
we generated a parallel as new i3 and we split that to new i2 and i3
instructions. Handle split_i2i3 similar to swap_i2i3: scan the
LOG_LINKs of i3 to see which of those need to link to i2 now. Link
those to i2, not i1. Partially rewrite this scan code.
gcc/testsuite/
PR rtl-optimization/84169
* gcc.c-torture/execute/pr84169.c: New.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr84169.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/84365] gcc.target/powerpc/altivec-7-le.c fails on power9
Date: Tue, 13 Feb 2018 22:17:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-02/msg00784.ht
| |ml
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--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug target/84365] gcc.target/powerpc/altivec-7-le.c fails on power9
Date: Tue, 13 Feb 2018 22:28:00 -0000
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
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Subject: [Bug fortran/82065] gfortran rejects redundant use of intrinsic module constant
Date: Tue, 13 Feb 2018 22:33:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
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----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
Slight variation of the original testcase that compiles
but gives a wrong result:
use iso_fortran_env
implicit none
print *, integer_kinds
call testsub
call testsub2
contains
subroutine testsub
print *, integer_kinds
end subroutine
subroutine testsub2
use iso_fortran_env, only : x => integer_kinds
print *, x
end subroutine
end
% ./a.out
1 2 4 8
1 2 4 8
0 0 0 0
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Subject: [Bug rtl-optimization/84169] [8 Regression] wrong code with u128 multiplication result at aarch64 -O
Date: Tue, 13 Feb 2018 22:35:00 -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> ---
Fixed.
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Subject: [Bug testsuite/84370] Invalid option used in test case gcc.target/powerpc/builtins-3-p9-runnable.c
Date: Tue, 13 Feb 2018 22:36:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-02/msg00789.ht
| |ml
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CC| |bergner at gcc dot gnu.org
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot gnu.org
Target Milestone|--- |8.0
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug testsuite/84370] Invalid option used in test case gcc.target/powerpc/builtins-3-p9-runnable.c
Date: Tue, 13 Feb 2018 22:41:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
>From gcc-bugs-return-593248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 22:41:12 2018
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Subject: [Bug debug/84342] [8 Regression] Location views breaks cross builds of arm including gnueabihf
Date: Tue, 13 Feb 2018 22:42:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |law at redhat dot com
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--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
I've added a marker for this BZ to Alex's change that fixed things.
Tamar -- the thing to look for are cases where a pattern emits no code, but
claims a nonzero size.
The ARM is inherently going to have problems with this because of how it uses
the ccfsm state to eliminate branches. I don't really see a good way to fix
this because at the time when we set the length information we don't have the
ccfsm state (which is only available during assembly output).
>From gcc-bugs-return-593249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 13 22:42:24 2018
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Subject: [Bug tree-optimization/84321] [8 Regression] ice in intersect_range_with_nonzero_bits, at tree-vrp.c:213
Date: Tue, 13 Feb 2018 22:42:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #15 from Jeffrey A. Law <law at redhat dot com> ---
Fixed by Richard's change on the trunk.
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Subject: [Bug target/84366] gcc.dg/torture/float128-cmp-invalid.c fails when run on power9
Date: Tue, 13 Feb 2018 22:44:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-13
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--- Comment #4 from Michael Meissner <meissner at gcc dot gnu.org> ---
Just confirming that this is the IEEE variant of
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684
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Subject: [Bug debug/84319] [8 regression] Location views break bootstrap with Solaris/SPARC as
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Should be fixed by Alex's change on the trunk.
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Subject: [Bug testsuite/84243] [8 Regression] gcc.target/i386/cet-intrin-4.c at r257414
Date: Tue, 13 Feb 2018 22:58:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
Should be fixed on the trunk now.
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Subject: [Bug tree-optimization/84051] [6/7/8 Regression] missing -Warray-bounds on an out-of-bounds access via an array pointer
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug tree-optimization/84053] [6/7/8 Regression] missing -Warray-bounds accessing a local array across inlined function boundaries
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug tree-optimization/84050] [6/7/8 Regression] missing -Warray-bounds accessing a struct array member
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug tree-optimization/84047] [6/7/8 Regression] missing -Warray-bounds on an out-of-bounds index into an array
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug target/84279] [8 Regression] powerpc64le ICE on cvc4
Date: Tue, 13 Feb 2018 23:08:00 -0000
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--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Tue Feb 13 23:05:59 2018
New Revision: 257647
URL: https://gcc.gnu.org/viewcvs?rev=257647&root=gcc&view=rev
Log:
gcc/
PR target/84279
* config/rs6000/rs6000.c (mem_operand_gpr): Disallow altivec addresses.
gcc/testsuite/
PR target/84279
* g++.dg/pr84279.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/pr84279.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/84279] [8 Regression] powerpc64le ICE on cvc4
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug tree-optimization/46029] -ftree-loop-if-convert-stores causes FAIL: libstdc++-v3/testsuite/ext/pb_ds/example/tree_intervals.cc
Date: Tue, 13 Feb 2018 23:18:00 -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 Sebastian Pop from comment #5)
> Maybe the patch was not committed because it was not ready before stage3:
> "GCC 4.6 Stage 3 (starts 2010-11-03)". I will update the patch and resubmit
> for review.
Have you resubmitted it yet?
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
Date: Tue, 13 Feb 2018 23:23:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
This looks like a similar problem as PR84365. I'll have a look.
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-13
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
Confirmed, same issue, same fix.
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Subject: [Bug rtl-optimization/84169] [8 Regression] wrong code with u128 multiplication result at aarch64 -O
Date: Tue, 13 Feb 2018 23:30:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Yeah, not planning to do backports, although the core problem is ancient.
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-02/msg00798.ht
| |ml
Resolution|--- |FIXED
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Tue Feb 13 23:29:38 2018
New Revision: 257648
URL: https://gcc.gnu.org/viewcvs?rev=257648&root=gcc&view=rev
Log:
PR target/84372
* gcc.target/powerpc/lvsl-lvsr.c: Also match lxv when compiling
with -mcpu=power9.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/lvsl-lvsr.c
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/84377] New: gcc-7.3.0 miscompiles truncf128@@GLIBC_2.26 in libm.so
Date: Wed, 14 Feb 2018 00:13:00 -0000
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Bug ID: 84377
Summary: gcc-7.3.0 miscompiles truncf128@@GLIBC_2.26 in libm.so
Product: gcc
Version: 7.3.0
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Created attachment 43411
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43411&action=edit
preprocessed source
I stumbled on this when trying to track down failures in the glibc-2.26
testsuite on Gentoo.
See also for the initial report
https://sourceware.org/bugzilla/show_bug.cgi?id=22826
* Problem occurs only with gcc-7.3.0, not gcc-6.4.0 with identical settings
* Problem occurs only when the test program loads libm.so compiled by said
compiler; which compiler is used to compile the test binary doesn't matter.
* Problem occurs (at least) when building a -m32 library in an x86-64 system; a
pure 32 bit install seems to be fine (but it has different CFLAGS etc).
* The test reports that truncf returns completely wrong data. Example:
testing _Float128 (without inline functions)
Failure: Test: trunc (1.625)
Result:
is: 1.62500000000000000000000000000000000e+00
0x1.a000000000000000000000000000p+0
should be: 1.00000000000000000000000000000000000e+00
0x1.0000000000000000000000000000p+0
difference: 6.25000000000000000000000000000000000e-01
0x1.4000000000000000000000000000p-1
ulp : 3245185536584267267831560205762560.0000
max.ulp : 0.0000
Compiler call:
x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed --save-temps
../sysdeps/ieee754/float128/s_truncf128.c -c -std=gnu11 -fgnu89-inline -O2
-Wall -Wundef -Wwrite-strings -fmerge-all-constants -fno-strict-aliasing
-frounding-math -fstack-protector-all -ggdb -march=native -Wstrict-prototypes
-Wold-style-definition -mpreferred-stack-boundary=4 -fPIC -Wa,-mtune=i686
-U_FORTIFY_SOURCE -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
-I../include
-I/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl/math
-I/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl
-I../sysdeps/unix/sysv/linux/i386/i686 -I../sysdeps/i386/i686/nptl
-I../sysdeps/unix/sysv/linux/i386 -I../sysdeps/unix/sysv/linux/x86
-I../sysdeps/x86/nptl -I../sysdeps/i386/nptl
-I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux
-I../sysdeps/nptl -I../sysdeps/pthread -I../sysdeps/gnu
-I../sysdeps/unix/inet -I../sysdeps/unix/sysv -I../sysdeps/unix/i386
-I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/i386/i686/fpu/multiarch
-I../sysdeps/i386/i686/fpu -I../sysdeps/i386/i686/multiarch
-I../sysdeps/i386/i686 -I../sysdeps/i386/fpu -I../sysdeps/x86/fpu/include
-I../sysdeps/x86/fpu -I../sysdeps/i386 -I../sysdeps/x86
-I../sysdeps/wordsize-32 -I../sysdeps/ieee754/float128
-I../sysdeps/ieee754/ldbl-96/include -I../sysdeps/ieee754/ldbl-96
-I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754
-I../sysdeps/generic -I.. -I../libio -I. -nostdinc -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include -isystem
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include-fixed -isystem /usr/include
-D_LIBC_REENTRANT -include
/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl/libc-modules.h
-DMODULE_NAME=libm -include ../include/libc-symbols.h -DPIC -DSHARED
-DTOP_NAMESPACE=glibc -I../soft-fp -o
/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl/math/s_truncf128.os
-MD -MP -MF
/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl/math/s_truncf128.os.dt
-MT
/var/tmp/portage/sys-libs/glibc-2.26-r6/work/build-x86-x86_64-pc-linux-gnu-nptl/math/s_truncf128.os
Preprocessed source will be attached.
Compiler version:
gcc (Gentoo 7.3.0 p1.0) 7.3.0
(please get back to me for questions about the Gentoo patchset)
A disassembly of the binaries is attached to the glibc bug.
More info on request.
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Subject: [Bug bootstrap/84326] [8 Regression] build fails on powerpc64-linux-gnu when configured wth --with-cpu-32=power7 --with-cpu-64=power7
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot gnu.org
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
I have it recreated, so I'll have a look.
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Subject: [Bug tree-optimization/84047] [6/7/8 Regression] missing -Warray-bounds on an out-of-bounds index into an array
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
CC| |egallager at gcc dot gnu.org
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #6)
> I posted a patch for a similar issue reported in bug 83776
> (https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02144.html). It handles
> MEM_REFs and diagnoses the test case in comment #0 (I must have missed that
> when I opened this bug) but it doesn't handle the test case in comment #2.
still worth adding the "patch" keyword to this one anyways, even if it only
handles one of the test cases.
>From gcc-bugs-return-593269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 01:00:40 2018
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Subject: [Bug tree-optimization/66013] Missed optimization after inlining va_list parameter, -m32 case
Date: Wed, 14 Feb 2018 01:30:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #6)
> Removing patch keyword. Discussed patch in
> https://gcc.gnu.org/ml/gcc-patches/2015-05/msg00886.html .
I think it's worth keeping the patch keyword even if it's already been
discussed; it's still there to return to if someone wants to start trying to
fix this again
>From gcc-bugs-return-593270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 01:30:04 2018
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Subject: [Bug target/84279] [8 Regression] powerpc64le ICE on cvc4
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-593271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 02:06:44 2018
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Subject: [Bug bootstrap/84326] [8 Regression] build fails on powerpc64-linux-gnu when configured wth --with-cpu-32=power7 --with-cpu-64=power7
Date: Wed, 14 Feb 2018 04:10:00 -0000
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Matthias Klose from comment #0)
> cc1: warning: will not generate 'power7' instructions because assembler
> lacks 'power7' support
> cc1: error: '-msecure-plt' not supported by your assembler
So this is the error you get if the gcc configure doesn't find your cross
binutils.
Is the install dir of your cross binutils on your PATH? If it is, do the
binaries have powerpc64-linux-gnu-* names, which your gcc configure is
expecting?
Can you attach the output of your configure?
>From gcc-bugs-return-593272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 04:10:31 2018
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Subject: [Bug tree-optimization/83776] [6/7/8 Regression] missing -Warray-bounds indexing past the end of a string literal
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-593273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 04:15:49 2018
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 06:11:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
Segher, I can have a look at this if you aren't already. I can see how of the
builtin only uses the altivec_lxv_<mode>_2op patterm, how it would fail on a
-m32 compile, since that pattern is disabled and you're supposed to use
altivec_lxv_<mode>_2op_si.
That said, why do we have two patterns at all? It seems like they should be
able to be combined fairly easily using the P iterator:
; The next two patterns embody what lvx should usually look like.
(define_insn "altivec_lvx_<mode>_2op"
[(set (match_operand:VM2 0 "register_operand" "=v")
(mem:VM2 (and:DI (plus:DI (match_operand:DI 1 "register_operand" "b")
(match_operand:DI 2 "register_operand" "r"))
(const_int -16))))]
"TARGET_ALTIVEC && TARGET_64BIT"
"lvx %0,%1,%2"
[(set_attr "type" "vecload")])
; 32-bit versions of the above.
(define_insn "altivec_lvx_<mode>_2op_si"
[(set (match_operand:VM2 0 "register_operand" "=v")
(mem:VM2 (and:SI (plus:SI (match_operand:SI 1 "register_operand" "b")
(match_operand:SI 2 "register_operand" "r"))
(const_int -16))))]
"TARGET_ALTIVEC && TARGET_32BIT"
"lvx %0,%1,%2"
[(set_attr "type" "vecload")])
>From gcc-bugs-return-593274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 06:11:32 2018
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Subject: [Bug fortran/68746] FAIL: gfortran.dg/read_dir.f90 -O0 execution test
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
No ill effects on gcc-testresults, seems to work.
Thanks for the report and for the suggestion on how to fix it.
>From gcc-bugs-return-593275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 07:19:05 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
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Alan Modra <amodra at gmail dot com> changed:
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--- Comment #10 from Alan Modra <amodra at gmail dot com> ---
Jakub had it correct in comment #8.
>From gcc-bugs-return-593276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 07:21:49 2018
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Subject: [Bug target/79242] [7/8 Regression] ICE in simplify_subreg, at simplify-rtx.c:6029
Date: Wed, 14 Feb 2018 08:38:00 -0000
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--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Feb 14 07:21:11 2018
New Revision: 257653
URL: https://gcc.gnu.org/viewcvs?rev=257653&root=gcc&view=rev
Log:
2018-02-14 Jozef Lawrynowicz <jozefl.gcc@gmail.com>
PR target/79242
* machmode.def: Define a complex mode for PARTIAL_INT.
* genmodes.c (complex_class): Return MODE_COMPLEX_INT for
MODE_PARTIAL_INT.
* doc/rtl.texi: Document CSPImode.
* config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
handling.
(msp430_hard_regno_nregs_with_padding): Likewise.
PR target/79242
* gcc.target/msp430/pr79242.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/msp430/pr79242.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/msp430/msp430.c
trunk/gcc/doc/rtl.texi
trunk/gcc/genmodes.c
trunk/gcc/machmode.def
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/83965] [8 Regression] ICE in vectorize_fold_left_reduction, at tree-vect-loop.c:6154
Date: Wed, 14 Feb 2018 08:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83965
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for the fix, I've got one another test-case that started to ICE since
the affected revision:
$ cat ice.i
int c;
unsigned char d;
int e (unsigned char *f)
{
int g;
for (int a; a; a++)
{
for (int b = 0; b < 6; b++)
g += __builtin_abs (f[b] - d);
f += c;
}
return g;
}
$ gcc -ftrapv -Ofast ice.i
during GIMPLE pass: vect
ice.i: In function ‘e’:
ice.i:3:5: internal compiler error: in vectorize_fold_left_reduction, at
tree-vect-loop.c:6217
int e (unsigned char *f)
^
0x11c140a vectorize_fold_left_reduction
../../gcc/tree-vect-loop.c:6217
0x11c4985 vectorizable_reduction(gimple*, gimple_stmt_iterator*, gimple**,
_slp_tree*, _slp_instance*)
../../gcc/tree-vect-loop.c:7375
0x11a83bc vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
../../gcc/tree-vect-stmts.c:9512
0x11e5f5e vect_schedule_slp_instance
../../gcc/tree-vect-slp.c:4187
0x11e62c8 vect_schedule_slp(vec_info*)
../../gcc/tree-vect-slp.c:4255
0x11c974f vect_transform_loop(_loop_vec_info*)
../../gcc/tree-vect-loop.c:8881
0x11ec714 vectorize_loops()
../../gcc/tree-vectorizer.c:740
0x1092f65 execute
../../gcc/tree-ssa-loop.c:414
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-593278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 08:46:35 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
Date: Wed, 14 Feb 2018 09:22:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43412
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43412&action=edit
gcc8-pr82368.patch
Untested fix.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/84377] gcc-7.3.0 miscompiles truncf128@@GLIBC_2.26 in libm.so
Date: Wed, 14 Feb 2018 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 #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Tried to reproduce this with:
pr84377-test.c:
extern _Float128 truncf128 (_Float128);
int
main ()
{
_Float128 f = truncf128 (1.625);
if (f != 1.0)
__builtin_abort ();
return 0;
}
pr84377.i (#c0 attachment).
gcc -m32 -O2 -std=gnu11 -fgnu89-inline -fno-strict-aliasing -frounding-math
-fstack-protector-all -march=native -fPIC pr84377-test.c pr84377.i -o
pr84377-test
with
gcc version 7.3.1 20180130 (Red Hat 7.3.1-2) (GCC)
but it doesn't fail for me, does it for you? What does -march=native expand
for you (add -v and show the options passed to cc1)?
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Subject: [Bug tree-optimization/84037] [8 Regression] Speed regression of polyhedron benchmark since r256644
Date: Wed, 14 Feb 2018 09:35:00 -0000
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--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Is this fixed now or is there more work to do?
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Subject: [Bug c++/84350] [7/8 Regression] ICE with new and auto
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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 rtl-optimization/83723] [8 Regression] ICE: in gen_rtx_SUBREG, at emit-rtl.c:1010
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, you forgot to note an important fact that -fpie is needed to reproduce it.
Reproduced now with -m32 -g -O2 -mfpmath=sse -msse2 -fpie .
Started with r256073, so it was likely just latent before.
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Subject: [Bug c++/84350] [7/8 Regression] ICE with new and auto
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
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Subject: [Bug c++/84375] [8 Regression] ICE with friend in local class
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/84376] [7/8 Regression] ICE with missing template parameter
Date: Wed, 14 Feb 2018 10:05:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/84037] [8 Regression] Speed regression of polyhedron benchmark since r256644
Date: Wed, 14 Feb 2018 10:06:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #30)
> Is this fixed now or is there more work to do?
I'm performance testing some more fixes.
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Subject: [Bug target/84363] [8 Regression] Assembler error in stage1/libgcc: Error: view number mismatch
Date: Wed, 14 Feb 2018 10:07:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/83723] [8 Regression] ICE: in gen_rtx_SUBREG, at emit-rtl.c:1010
Date: Wed, 14 Feb 2018 10:14:00 -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> ---
Created attachment 43413
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43413&action=edit
gcc8-pr83723.patch
Untested fix.
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Subject: [Bug debug/84317] [8 regression] SEGV in dwarf2out.c (dwarf2out_source_line)
Date: Wed, 14 Feb 2018 10:17:00 -0000
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--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
The corrected patch, that I emailed you just after I got your email and
realized I'd posted the patch without that fix, has been in the trunk since
yesterday, FWIW.
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Subject: [Bug debug/84342] [8 Regression] Location views breaks cross builds of arm including gnueabihf
Date: Wed, 14 Feb 2018 10:51:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Jeff, Christina, the point of introducing the new target hook was precisely to
enable ports to override the length-based logic. So, whatever logic is used to
decide to eliminate a branch can be reused to indicate that the apparent branch
insn won't take up any code space at the current point.
>From gcc-bugs-return-593292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 10:51:33 2018
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Subject: [Bug debug/84342] [8 Regression] Location views breaks cross builds of arm including gnueabihf
Date: Wed, 14 Feb 2018 10:58:00 -0000
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--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Jeff: ccfsm is indeed the problem here, as it does indeed decide quite late to
remove a branch. Though we've tried emitting a nop instead of nothing just to
test and this fixes the branch but causes another failure.
So it looks like there might be multiple things wrong here. Haven't taken a
look at the new failure yet.
Alexandre: I assume you mean TARGET_RESET_LOCATION_VIEW? So for this we should
just return a 1 for the branch?
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Subject: [Bug debug/84342] [8 Regression] Location views breaks cross builds of arm including gnueabihf
Date: Wed, 14 Feb 2018 11:08:00 -0000
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--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
That's the hook, yes. But if you return 1, then the view-computing logic will
behave just as if it noticed a nonzero length for the insn. If the branch is
eliminated and no code it generated for that insn, you should instead return
-1.
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Subject: [Bug target/82005] [8 regression] early lto debug creates invalid assembly on Darwin
Date: Wed, 14 Feb 2018 11:09:00 -0000
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--- Comment #26 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #25)
> On February 13, 2018 5:35:22 PM GMT+01:00, simon at pushface dot org
> <gcc-bugzilla@gcc.gnu.org> wrote:
> >https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
> >
> >--- Comment #24 from simon at pushface dot org ---
> >(In reply to Richard Biener from comment #22)
> >
> >> These are already implemented
> >> by darwin in darwin_asm_lto_{start,end} where it could simply
> >temporarily
> >> adjust debug_info_level to DINFO_LEVEL_NONE. Like with the
> >following.
> >
> >I may be missing something, but that patch doesn’t actually adjust
> >debug_info_level?
>
> Whoops, sorry. Of course. Add debug_info_level = DINFO_LEVEL_NONE ; or how
> it is spelled.
For completeness here is a fixed diff:
Index: gcc/config/darwin.c
===================================================================
--- gcc/config/darwin.c (revision 257620)
+++ gcc/config/darwin.c (working copy)
@@ -1933,6 +1933,7 @@ static GTY (()) vec<darwin_lto_section_e
in darwin_end_file. */
static FILE *lto_asm_out_file, *saved_asm_out_file;
static char *lto_asm_out_name;
+static enum debug_info_levels saved_debug_info_level;
/* Prepare asm_out_file for LTO output. For darwin, this means hiding
asm_out_file and switching to an alternative output file. */
@@ -1941,6 +1942,8 @@ darwin_asm_lto_start (void)
{
gcc_assert (! saved_asm_out_file);
saved_asm_out_file = asm_out_file;
+ saved_debug_info_level = debug_info_level;
+ debug_info_level = DINFO_LEVEL_NONE;
if (! lto_asm_out_name)
lto_asm_out_name = make_temp_file (".lto.s");
lto_asm_out_file = fopen (lto_asm_out_name, "a");
@@ -1959,6 +1962,7 @@ darwin_asm_lto_end (void)
fclose (lto_asm_out_file);
asm_out_file = saved_asm_out_file;
saved_asm_out_file = NULL;
+ debug_info_level = saved_debug_info_level;
}
static void
>From gcc-bugs-return-593295-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 11:09:33 2018
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From: "dilfridge at gentoo dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84377] gcc-7.3.0 miscompiles truncf128@@GLIBC_2.26 in libm.so
Date: Wed, 14 Feb 2018 11:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84377
--- Comment #2 from Andreas K. Huettel <dilfridge at gentoo dot org> ---
>
> but it doesn't fail for me, does it for you?
Yes it fails here.
(~amd64 chroot) pinacolada ~/test # gcc -m32 -O2 -std=gnu11 -fgnu89-inline
-fno-strict-aliasing -frounding-math -fstack-protector-all -march=native -fPIC
pr84377-test.c pr84377.i -o pr84377-test
(~amd64 chroot) pinacolada ~/test # ./pr84377-test
Abgebrochen
(~amd64 chroot) pinacolada ~/test #
(=Aborted)
> What does -march=native expand
> for you (add -v and show the options passed to cc1)?
(~amd64 chroot) pinacolada ~/test # LANG=C gcc -v -m32 -O2 -std=gnu11
-fgnu89-inline -fno-strict-aliasing -frounding-math -fstack-protector-all
-march=native -fPIC pr84377-test.c pr84377.i -o pr84377-test
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-7.3.0/work/gcc-7.3.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/7.3.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/7.3.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/7.3.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/7.3.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/7.3.0/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 7.3.0 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 --disable-libgcj
--enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts
--disable-libmpx --enable-vtable-verify --enable-libvtv --enable-lto
--without-isl --enable-libsanitizer --enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 7.3.0 (Gentoo 7.3.0 p1.0)
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/cc1 -quiet -v -imultilib 32
pr84377-test.c -march=skylake -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3
-mno-sse4a -mcx16 -msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm
-mno-lwp -mfma -mno-fma4 -mno-xop -mbmi -msgx -mbmi2 -mno-tbm -mavx -mavx2
-msse4.2 -msse4.1 -mlzcnt -mrtm -mhle -mrdrnd -mf16c -mfsgsbase -mrdseed
-mprfchw -madx -mfxsr -mxsave -mxsaveopt -mno-avx512f -mno-avx512er
-mno-avx512cd -mno-avx512pf -mno-prefetchwt1 -mclflushopt -mxsavec -mxsaves
-mno-avx512dq -mno-avx512bw -mno-avx512vl -mno-avx512ifma -mno-avx512vbmi
-mno-avx5124fmaps -mno-avx5124vnniw -mno-clwb -mno-mwaitx -mno-clzero -mno-pku
-mno-rdpid --param l1-cache-size=32 --param l1-cache-line-size=64 --param
l2-cache-size=8192 -mtune=skylake -quiet -dumpbase pr84377-test.c -m32 -auxbase
pr84377-test -O2 -std=gnu11 -version -fgnu89-inline -fno-strict-aliasing
-frounding-math -fstack-protector-all -fPIC -o /tmp/ccxL6T9P.s
GNU C11 (Gentoo 7.3.0 p1.0) version 7.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 3.1.6,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include-fixed
/usr/include
End of search list.
GNU C11 (Gentoo 7.3.0 p1.0) version 7.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 3.1.6,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: d1cccfcc83f321cbb1113d0d0df65594
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/bin/as
-v --32 -o /tmp/cclwtFas.o /tmp/ccxL6T9P.s
GNU assembler version 2.29.1 (x86_64-pc-linux-gnu) using BFD version (Gentoo
2.29.1 p3) 2.29.1
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/cc1 -fpreprocessed pr84377.i
-march=skylake -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16
-msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm -mno-lwp -mfma -mno-fma4
-mno-xop -mbmi -msgx -mbmi2 -mno-tbm -mavx -mavx2 -msse4.2 -msse4.1 -mlzcnt
-mrtm -mhle -mrdrnd -mf16c -mfsgsbase -mrdseed -mprfchw -madx -mfxsr -mxsave
-mxsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf
-mno-prefetchwt1 -mclflushopt -mxsavec -mxsaves -mno-avx512dq -mno-avx512bw
-mno-avx512vl -mno-avx512ifma -mno-avx512vbmi -mno-avx5124fmaps
-mno-avx5124vnniw -mno-clwb -mno-mwaitx -mno-clzero -mno-pku -mno-rdpid --param
l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192
-mtune=skylake -quiet -dumpbase pr84377.i -m32 -auxbase pr84377 -O2 -std=gnu11
-version -fgnu89-inline -fno-strict-aliasing -frounding-math
-fstack-protector-all -fPIC -o /tmp/ccxL6T9P.s
GNU C11 (Gentoo 7.3.0 p1.0) version 7.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 3.1.6,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C11 (Gentoo 7.3.0 p1.0) version 7.3.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 3.1.6,
MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: d1cccfcc83f321cbb1113d0d0df65594
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/bin/as
-v --32 -o /tmp/ccHYPii4.o /tmp/ccxL6T9P.s
GNU assembler version 2.29.1 (x86_64-pc-linux-gnu) using BFD version (Gentoo
2.29.1 p3) 2.29.1
COMPILER_PATH=/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/:/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/:/usr/libexec/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib32/:/lib/../lib32/:/usr/lib/../lib32/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/lib/:/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/collect2 -plugin
/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/liblto_plugin.so
-plugin-opt=/usr/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/lto-wrapper
-plugin-opt=-fresolution=/tmp/ccvHhMqG.res -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -pie -o
pr84377-test /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib32/Scrt1.o
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib32/crti.o
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32/crtbeginS.o
-L/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32
-L/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib32 -L/lib/../lib32
-L/usr/lib/../lib32 -L/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0
-L/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/lib
-L/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../.. /tmp/cclwtFas.o
/tmp/ccHYPii4.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed
-lgcc_s --no-as-needed /usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/32/crtendS.o
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib32/crtn.o
COLLECT_GCC_OPTIONS='-v' '-m32' '-O2' '-std=gnu11' '-fgnu89-inline'
'-fno-strict-aliasing' '-frounding-math' '-fstack-protector-all'
'-march=native' '-fPIC' '-o' 'pr84377-test'
(~amd64 chroot) pinacolada ~/test #
>From gcc-bugs-return-593297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 11:22:16 2018
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 11:22:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
See https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00031.html -- I think Kaushik
is still looking at this?
>From gcc-bugs-return-593296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 11:21:03 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] [8 regression] early lto debug creates invalid assembly on Darwin
Date: Wed, 14 Feb 2018 11:22:00 -0000
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--- Comment #27 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> For completeness here is a fixed diff:
With the patch the failures (-m32/-m64) went down from 1059 to 467.
>From gcc-bugs-return-593298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 11:22:44 2018
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] [8 regression] early lto debug creates invalid assembly on Darwin
Date: Wed, 14 Feb 2018 12:11:00 -0000
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--- Comment #28 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 14 Feb 2018, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
>
> --- Comment #27 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > For completeness here is a fixed diff:
>
> With the patch the failures (-m32/-m64) went down from 1059 to 467.
How do the remaining failures look like?
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From: "petschy at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84378] New: Misleading diagnostics when using ambiguous names for ptr to memfun args in member fn
Date: Wed, 14 Feb 2018 12:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84378
Bug ID: 84378
Summary: Misleading diagnostics when using ambiguous names for
ptr to memfun args in member fn
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: petschy at gmail dot com
Target Milestone: ---
Created attachment 43414
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43414&action=edit
source to reproduce the bug
An enum member and a using typedef clashes. When defining a member function
pointer, GCC gives the correct reason if it is defined in a free standing
function, however, the reasoning is omitted if it is defined in a class member
function. Tried with 7.3.1, 8.0.0 and 8.0.1, all the same.
In both cases there is some misleading 'noise' in the diagnostics.
Errors for the free standing function:
20180214-pmf.cpp: In function ‘void foo()’:
20180214-pmf.cpp:25:19: error: cannot declare pointer to ‘void’ member
void(Bar::*mfpf)(MyFoo, bool, const char*);
^~~~~
There is NO 'void' member.
20180214-pmf.cpp:25:19: error: reference to ‘MyFoo’ is ambiguous
20180214-pmf.cpp:19:19: note: candidates are: ‘Enum MyFoo’
enum Enum : int { MyFoo, MyBar, MyBaz };
^~~~~
20180214-pmf.cpp:9:44: note: ‘using MyFoo = struct
ns1::Foo<int, ns2::MyFooTag>’
using MyFoo = ns1::Foo<int, class MyFooTag>;
^
This is all I needed!
20180214-pmf.cpp:25:26: error: expected primary-expression before ‘bool’
void(Bar::*mfpf)(MyFoo, bool, const char*);
^~~~
20180214-pmf.cpp:25:32: error: expected primary-expression before ‘const’
void(Bar::*mfpf)(MyFoo, bool, const char*);
^~~~~
20180214-pmf.cpp:25:43: error: expression list treated as compound expression
in initializer [-fpermissive]
void(Bar::*mfpf)(MyFoo, bool, const char*);
^
20180214-pmf.cpp:27:15: error: cannot convert ‘void (Bar::*)(ns2::MyFoo, bool,
const char*)’ {aka ‘void (Bar::*)(ns1::Foo<int, ns2::MyFooTag>, bool, const
char*)’} to ‘void Bar::*’ in assignment
mfpf = &Bar::Baz;
^~~
This isn't too helpful, either.
Errors for the member function. The most helpful message about the ambiguity is
omitted, unfortunately:
20180214-pmf.cpp: In member function ‘void Class::MemFun()’:
20180214-pmf.cpp:38:20: error: cannot declare pointer to ‘void’ member
void(Bar::*mfpf)(MyFoo2, bool, const char*);
^~~~~~
20180214-pmf.cpp:38:28: error: expected primary-expression before ‘bool’
void(Bar::*mfpf)(MyFoo2, bool, const char*);
^~~~
20180214-pmf.cpp:38:34: error: expected primary-expression before ‘const’
void(Bar::*mfpf)(MyFoo2, bool, const char*);
^~~~~
20180214-pmf.cpp:38:45: error: expression list treated as compound expression
in initializer [-fpermissive]
void(Bar::*mfpf)(MyFoo2, bool, const char*);
^
20180214-pmf.cpp:40:16: error: cannot convert ‘void (Bar::*)(ns2::MyFoo2, bool,
const char*)’ {aka ‘void (Bar::*)(ns1::Foo<int, ns2::MyFoo2Tag>, bool, const
char*)’} to ‘void Bar::*’ in assignment
mfpf = &Bar::Baz2;
^~~~
$ g++-7.3.1 -v
Using built-in specs.
COLLECT_GCC=g++-7.3.1
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/7.3.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --enable-languages=c,c++ --disable-multilib
--program-suffix=-7.3.1 --disable-bootstrap CFLAGS='-O2 -march=native'
CXXFLAGS='-O2 -march=native'
Thread model: posix
gcc version 7.3.1 20180214 (GCC)
$ g++-8.0.1 -v
Using built-in specs.
COLLECT_GCC=g++-8.0.1
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --enable-languages=c,c++ --disable-multilib
--program-suffix=-8.0.1 --disable-bootstrap CFLAGS='-O2 -march=native'
CXXFLAGS='-O2 -march=native'
Thread model: posix
gcc version 8.0.1 20180214 (experimental) (GCC)
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Subject: [Bug fortran/84313] [F08] reject procedure pointers in COMMON blocks
Date: Wed, 14 Feb 2018 12:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84313
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 14 12:12:15 2018
New Revision: 257654
URL: https://gcc.gnu.org/viewcvs?rev=257654&root=gcc&view=rev
Log:
PR fortran/84313
* testsuite/libgomp.fortran/threadprivate4.f90: Add
-std=f2003 -fall-intrinsics into dg-additional-options.
Modified:
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.fortran/threadprivate4.f90
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83831] [RX] Unused bclr,bnot,bset insns
Date: Wed, 14 Feb 2018 12:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83831
--- Comment #4 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Wed Feb 14 12:33:37 2018
New Revision: 257655
URL: https://gcc.gnu.org/viewcvs?rev=257655&root=gcc&view=rev
Log:
gcc/
PR target/83831
* config/rx/rx-protos.h (rx_reg_dead_or_unused_after_insn,
rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
declarations.
(set_of_reg): New struct.
(rx_find_set_of_reg, rx_find_use_of_reg): New functions.
* config/rx/rx.c (rx_reg_dead_or_unused_after_insn,
rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
functions.
* config/rx/rx.md (andsi3, iorsi3, xorsi3): Convert to insn_and_split.
Split into bitclr, bitset, bitinvert patterns if appropriate.
(*bitset, *bitinvert, *bitclr): Convert to named insn_and_split and
use rx_fuse_in_memory_bitop.
(*bitset_in_memory, *bitinvert_in_memory, *bitclr_in_memory): Convert
to named insn, correct maximum insn length.
gcc/testsuite/
PR target/83831
* gcc.target/rx/pr83831.c: New tests.
Added:
trunk/gcc/testsuite/gcc.target/rx/pr83831.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rx/rx-protos.h
trunk/gcc/config/rx/rx.c
trunk/gcc/config/rx/rx.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/83990] [7 Regression] Spurious "potential null pointer dereference" warning regression from 7.1 onwards
Date: Wed, 14 Feb 2018 13:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83990
--- Comment #15 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Wed Feb 14 12:55:47 2018
New Revision: 257656
URL: https://gcc.gnu.org/viewcvs?rev=257656&root=gcc&view=rev
Log:
Fix location handling in ipa_modify_call_arguments
2018-02-14 Martin Jambor <mjambor@suse.cz>
PR c++/83990
* ipa-prop.c (ipa_modify_call_arguments): Use location of call
statements, also set location of a load to a temporary.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/ipa-prop.c
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Subject: [Bug c++/84374] placeholder decltype(auto) accepted when it's not the placeholder alone in trailing-return-type
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-14
Ever confirmed|0 |1
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Subject: [Bug c++/84364] [8 Regression] -Weffc++ warns on "return *this" in template after r253599
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84364
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Jonathan Wakely from comment #3)
> > Insert obligatory "we should fix -Weffc++ or deprecate it" comment.
>
> Insert obligatory statement of my preference for the former of those 2
> options.
We all want ponies, but unless somebody actually fixes it, it's arguably doing
more harm than good.
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Subject: [Bug c++/55836] Weffc++: warning: base class 'class std::list<int, std::allocator<int> >' has a non-virtual destructor
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Lars Hamrén from comment #0)
> Suggestions: either remove the warning in these cases (when the problem is
> in the standard library), or add virtual destructors to standard library
> classes.
I think this bug is simply INVALID.
The warning is correct that you're deriving from a class without a virtual
destructor, the fact the class is from the standard library doesn't change
that. (Bug 56879 suggests limiting the warning to cases that matter, and Bug
16166 suggests there should be separate options for the various warnings
controlled by -Weffc++, which would help here, but still wouldn't change the
fact that deriving publicly from std::list is potentially bad).
Giving std::list a virtual destructor is absolutely out of the question.
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Subject: [Bug c++/81930] [meta-bug] Issues with -Weffc++
Date: Wed, 14 Feb 2018 13:09:00 -0000
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Bug 81930 depends on bug 55836, which changed state.
Bug 55836 Summary: Weffc++: warning: base class 'class std::list<int, std::allocator<int> >' has a non-virtual destructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55836
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
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Subject: [Bug c++/84322] -fstrong-eval-order violated on assignment with function call
Date: Wed, 14 Feb 2018 13:15:00 -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> ---
Confirmed.
(In reply to Oleg Oshmyan from comment #0)
> Here are my gcc -v and uname -a, which I doubt will be useful but are
> requested on https://gcc.gnu.org/bugs/:
Thank you for providing them though.
> For reference, I have also tried GCC 6.3.0 and 5.1.0 (which do not
> understand -fstrong-eval-order but do understand -std=c++17), and they use
> the same order as GCC 7.3.0.
Unsurprising, since GCC 5 and GCC 6 were released before the evaluation order
rules changed in the C++17 drafts. Understanding the -std=c++17 option doesn't
mean they conform to the final standard and this evaluation order is how GCC
always did it.
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Subject: [Bug c++/84357] [8 Regression] Incorrect 'foo' is used uninitialized with -O3
Date: Wed, 14 Feb 2018 13:43:00 -0000
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--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Feb 14 13:14:51 2018
New Revision: 257657
URL: https://gcc.gnu.org/viewcvs?rev=257657&root=gcc&view=rev
Log:
Check array indices in object_address_invariant_in_loop_p (PR 84357)
object_address_invariant_in_loop_p ignored ARRAY_REF indices on
the basis that:
/* Index of the ARRAY_REF was zeroed in analyze_indices, thus we only
need to check the stride and the lower bound of the reference. */
That was true back in 2007 when the code was added:
static void
dr_analyze_indices (struct data_reference *dr, struct loop *nest)
{
[...]
while (handled_component_p (aref))
{
if (TREE_CODE (aref) == ARRAY_REF)
{
op = TREE_OPERAND (aref, 1);
access_fn = analyze_scalar_evolution (loop, op);
access_fn = resolve_mixers (nest, access_fn);
VEC_safe_push (tree, heap, access_fns, access_fn);
TREE_OPERAND (aref, 1) = build_int_cst (TREE_TYPE (op), 0);
}
aref = TREE_OPERAND (aref, 0);
}
but the assignment was removed a few years ago. We were therefore
treating "two->arr[i]" and "three->arr[i]" as loop invariant.
2018-02-14 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/84357
* tree-data-ref.c (object_address_invariant_in_loop_p): Check
operand 1 of an ARRAY_REF too.
gcc/testsuite/
PR tree-optimization/84357
* gcc.dg/vect/pr84357.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr84357.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-data-ref.c
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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 debug/84317] [8 regression] SEGV in dwarf2out.c (dwarf2out_source_line)
Date: Wed, 14 Feb 2018 13:44:00 -0000
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--- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #3 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
> Uni-Bielefeld.DE> ---
>> --- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot
>> Uni-Bielefeld.DE> ---
> [...]
>> I'm currently running a couple of bootstraps (Solaris 10, 11.3, 11.3
>> with as/ld and gas/ld on SPARC, Solaris 10 with as/ld, Solaris 11.3 with
>> gas/ld, Solaris 11.4 with gas/gld on x86) with a tree that has
>>
>> https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00624.html
>>
>> applied to check if that fixes either or both of this PR and PR
>> debug/84319.
[...]
> Removing the #pragma GCC poison and trying again...
They've all completed successfully now, no regressions compared to the
last successful builds, i.e. both the SEGVs and the
error: can't compute difference between symbols in different segments
errors are gone.
The only caveat is that locview is disabled on Solaris/x86 with as
(neither HAVE_AS_DWARF2_DEBUG_LINE nor HAVE_AS_DWARF2_DEBUG_VIEW
defined) where the builds succeeded before your latest patch.
Rainer
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Subject: [Bug debug/84317] [8 regression] SEGV in dwarf2out.c (dwarf2out_source_line)
Date: Wed, 14 Feb 2018 13:57:00 -0000
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--- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
> The corrected patch, that I emailed you just after I got your email and
> realized I'd posted the patch without that fix, has been in the trunk since
> yesterday, FWIW.
I know: I've also bootstrapped with it last night.
Thanks.
Rainer
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 14:06:00 -0000
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--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #7)
> See https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00031.html -- I think
> Kaushik
> is still looking at this?
Ah, ok. I do agree with your comment to use the *_2op_si pattern.
Do you agree we could combine these patterns? If so, I could do that as a
followon cleanup patch.
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Subject: [Bug c++/84322] -fstrong-eval-order violated on assignment with function call
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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
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We have:
else if (flag_strong_eval_order > 1
&& TREE_CODE (*expr_p) == MODIFY_EXPR
&& lvalue_has_side_effects (op0)
&& (TREE_CODE (op1) == CALL_EXPR
|| (SCALAR_TYPE_P (TREE_TYPE (op1))
&& !TREE_CONSTANT (op1))))
TREE_OPERAND (*expr_p, 1) = get_formal_tmp_var (op1, pre_p);
but lvalue_has_side_effects does nothing if TREE_SIDE_EFFECTS is 0:
static bool
lvalue_has_side_effects (tree e)
{
if (!TREE_SIDE_EFFECTS (e))
return false;
while (handled_component_p (e))
{
if (TREE_CODE (e) == ARRAY_REF
&& TREE_SIDE_EFFECTS (TREE_OPERAND (e, 1)))
return true;
e = TREE_OPERAND (e, 0);
}
if (DECL_P (e))
/* Just naming a variable has no side-effects. */
return false;
else if (INDIRECT_REF_P (e))
/* Similarly, indirection has no side-effects. */
return TREE_SIDE_EFFECTS (TREE_OPERAND (e, 0));
else
/* For anything else, trust TREE_SIDE_EFFECTS. */
return TREE_SIDE_EFFECTS (e);
}
A mere read from memory is not accounted for in TREE_SIDE_EFFECTS, but as the
testcase shows, we probably need to consider it as a side-effect too.
What about:
extern int a[10];
int g ();
void
f ()
{
*(a + a[1]) = g ();
}
or any other arbitrary expressions on the LHS which can read from
needs_to_live_in_memory variables?
I'm also wondering about
if (!error_operand_p (op0)
&& !error_operand_p (op1)
&& (TYPE_STRUCTURAL_EQUALITY_P (TREE_TYPE (op0))
|| TYPE_STRUCTURAL_EQUALITY_P (TREE_TYPE (op1)))
&& !useless_type_conversion_p (TREE_TYPE (op1), TREE_TYPE (op0)))
TREE_OPERAND (*expr_p, 1) = build1 (VIEW_CONVERT_EXPR,
TREE_TYPE (op0), op1);
after which the P0145 checks aren't done, can it ever happen that op1 is a
CALL_EXPR in this case?
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
Date: Wed, 14 Feb 2018 14:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84368
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> ---
Can't reproduce with r257093 and onwards, it is just accepted.
Before that it just ICEd, starting with r251433. Before that it has been
accepted too.
>From gcc-bugs-return-593314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 14:17:44 2018
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
Date: Wed, 14 Feb 2018 14:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Actually, on another box I can reproduce it. Wonder if the order of
instantiation of pending templates isn't depending on some unstable sort or
something similar, this is a second PR in a short time where it can't be
reproduced in all compilers I have around.
>From gcc-bugs-return-593315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 14:20:13 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
Date: Wed, 14 Feb 2018 14:27:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 14 14:19:36 2018
New Revision: 257658
URL: https://gcc.gnu.org/viewcvs?rev=257658&root=gcc&view=rev
Log:
PR other/82368
* elf.c (EM_PPC64, EF_PPC64_ABI): Undefine and define.
(struct elf_ppc64_opd_data): New type.
(elf_initialize_syminfo): Add opd argument, handle symbols
pointing into the PowerPC64 ELFv1 .opd section.
(elf_add): Read .opd section on PowerPC64 ELFv1, pass pointer
to structure with .opd data to elf_initialize_syminfo.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/elf.c
>From gcc-bugs-return-593316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 14:27:05 2018
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From: "paul.richard.thomas at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/80945] Invalid code with allocatable character array in READ/WRITE statement
Date: Wed, 14 Feb 2018 14:37:00 -0000
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--- Comment #8 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> ---
Hi Thomas,
It doesn't just ring bells, it lets off sirens and sets the marching
bands to marching!
I can only find rather old sources on the web but I seem to remember
that the new dtype generation uses gfc_get_element_type , which makes
use of GFC_TYPE_ARRAY_DATAPTR_TYPE. If this latter does not get reset
with each reallocation it would be the source of the trouble.
I'll try to take a look tonight, although the 14th February might prevail :-)
Paul
On 13 February 2018 at 21:18, tkoenig at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80945
>
> --- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> Still fails with current trunk.
>
> Code from comment#1, somewhat simplified:
>
> program main
> implicit none
> integer:: i
> integer, parameter:: N = 10
> character(len=:), dimension(:),allocatable:: ca
> allocate(character(len=N):: ca(3))
> ca(1) = "foo"
> ca(2) = "bar"
> ca(3) = "xyzzy"
> write (*, '(3A5)') ca(1:3)
> end program
>
> This yields on gcc110:
>
> foo foo foo
>
> Looking at the tree dump, we see
>
> MAIN__ ()
> {
> integer(kind=8) .ca;
> struct array01_unknown ca;
> bitsizetype D.2078;
> sizetype D.2079;
>
> D.2078 = (bitsizetype) (sizetype) NON_LVALUE_EXPR <.ca> * 8;
> D.2079 = (sizetype) NON_LVALUE_EXPR <.ca>;
>
> and later
>
> {
> integer(kind=4) overflow.0;
>
> .ca = 10;
> ca.dtype = {.elem_len=(unsigned long) SAVE_EXPR <(sizetype) NON_LVALUE_EXPR
> <.ca>>, .rank=1, .type=6};
>
> ...
>
> _gfortran_st_write (&dt_parm.1);
> {
> struct array01_unknown parm.2;
>
> parm.2.dtype = {.elem_len=(unsigned long) SAVE_EXPR <D.2079>, .rank=1,
> .type=6};
> parm.2.dim[0].lbound = 1;
> parm.2.dim[0].ubound = 3;
> parm.2.dim[0].stride = 1;
> parm.2.data = (void *) &(*(character(kind=1)[0:][1:.ca] * restrict)
> ca.data)[1 - ca.dim[0].lbound];
> parm.2.offset = ca.offset;
> _gfortran_transfer_array_write (&dt_parm.1, &parm.2, 1, .ca);
>
> so the dtype gets its elem_len from the uninitialized copy of .ca
> instead of the correctly initialized value later.
>
> Paul, does this ring any bells?
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>From gcc-bugs-return-593317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 14:37:03 2018
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
Date: Wed, 14 Feb 2018 14:39:00 -0000
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--- Comment #3 from Benjamin Buch <benni.buch at gmail dot com> ---
I'm on git commit a5283f322810189a156a0fb080bf6d65e6f7970e which should be
R257627.
I used:
$ git svn find-rev $(git log --max-count 1 --pretty=format:%H)
Migrating from a git-svn v1 layout...
Data from a previous version of git-svn exists, but
.git/svn
(required for this version (2.7.4) of git-svn) does not exist.
Done migrating from a git-svn v1 layout
257627
Hope this is the correct way to get the revision number.
I will check if I can reproduce it with current trunk again.
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Subject: [Bug c/84100] [7 Regression] Function __attribute__((optimize(align-loops2))) gives spurious warning and is ignored
Date: Wed, 14 Feb 2018 14:46:00 -0000
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--- Comment #11 from Chris Hall <gcc at gmch dot uk> ---
FWIW: __attribute__((aligned(32))) works nicely for functions.
Generally there is little to be gained from aligning all loops/jumps/labels in
a given function or group of functions.
Further, when code alignment issues bite, there is no guarantee that the
solution is to align all loops/jumps/labels in the same way.
So, it would be nice to be able to apply __attribute__((aligned(n))) to loops
and/or labels... and perhaps to blocks. That way, precise alignment could be
applied precisely where it matters.
I have been doing some detailed timing of relatively small operations, which of
course involves a loop to do the operation being timed many times. If the
timing loop is not 32-byte aligned, the timings I get are not stable.
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Subject: [Bug c++/84357] [8 Regression] Incorrect 'foo' is used uninitialized with -O3
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-593320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 14:47:43 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/84197] [7/8 Regression] Segmentation fault when setting -g
Date: Wed, 14 Feb 2018 14:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84197
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/84379] New: Problems with sol2.c GTY handling
Date: Wed, 14 Feb 2018 15:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84379
Bug ID: 84379
Summary: Problems with sol2.c GTY handling
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: *-*-solaris2.*
While investigating the jit testsuite failures on Solaris with the native as
(cf. PR jit/84288), I noticed that there's no GTY markup in gcc/config/sol2.c.
Trying to fix that (adding GTY(()) markers to struct comdat_entry and
solaris_comdat_htab and including gt-sol2.h resulted in code that wouldn't even
compile:
In file included from /vol/gcc/src/hg/trunk/solaris/gcc/coretypes.h:423:0,
from /vol/gcc/src/hg/trunk/solaris/gcc/config/sol2.c:23:
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h: In instantiation of 'void
gt_ggc_mx(hash_table<E>*) [with E = comdat_entry_hasher]':
./gt-sol2.h:28:19: required from here
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h:1049:39: error: 'ggc_maybe_mx'
is not a member of 'comdat_entry_hasher'
E::ggc_maybe_mx (h->m_entries[i]);
^
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h: In instantiation of 'void
gt_pch_nx(hash_table<E>*) [with D = comdat_entry_hasher]':
./gt-sol2.h:44:19: required from here
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h:1084:33: error: 'pch_nx' is not
a member of 'comdat_entry_hasher'
D::pch_nx (h->m_entries[i]);
^
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h: In instantiation of 'void
hashtab_entry_note_pointers(void*, void*, gt_pointer_operator, void*) [with D =
comdat_entry_hasher; gt_pointer_operator = void (*)(void*, void*)]':
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h:1076:74: required from 'void
gt_pch_nx(hash_table<E>*) [with D = comdat_entry_hasher]'
./gt-sol2.h:44:19: required from here
/vol/gcc/src/hg/trunk/solaris/gcc/hash-table.h:1067:47: error: 'pch_nx' is not
a member of 'comdat_entry_hasher'
D::pch_nx (map->m_entries[i], op, cookie);
^
make[3]: *** [/vol/gcc/src/hg/trunk/solaris/gcc/config/t-sol2:36: sol2.o] Error
1
I haven't yet been able to fix that.
I've also tried a build with --enable-checking=yes,gcac to determine if the
jit testsuite failures observed are really caused by GC issues. However, the
32-bit build would abort early with an OOM error, and the 64-bit build times
were so over-the-top that they probably wouldn't complete in a week.
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From: "itsimbal at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84239] Reimplement rdssp[d|q] and incssp[d|q] CET intrinsics
Date: Wed, 14 Feb 2018 15:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84239
--- Comment #1 from itsimbal at gcc dot gnu.org ---
Author: itsimbal
Date: Wed Feb 14 15:06:21 2018
New Revision: 257660
URL: https://gcc.gnu.org/viewcvs?rev=257660&root=gcc&view=rev
Log:
Reimplement CET intrinsics for rdssp/incssp insn.
Introduce a couple of new CET intrinsics for reading and updating a
shadow stack pointer (_get_ssp and _inc_ssp). They replace the existing
_rdssp[d|q] and _incssp[d|q] instrinsics.
PR target/84239
* gcc/config/i386/cetintrin.h: Remove _rdssp[d|q] and
add _get_ssp intrinsics. Remove argument from
__builtin_ia32_rdssp[d|q].
* gcc/config/i386/i386-builtin-types.def: Add UINT_FTYPE_VOID.
* gcc/config/i386/i386-builtin.def: Remove argument from
__builtin_ia32_rdssp[d|q].
* gcc/config/i386/i386.c: Use UINT_FTYPE_VOID. Use
ix86_expand_special_args_builtin for _rdssp[d|q].
* gcc/config/i386/i386.md: Remove argument from rdssp[si|di] insn.
Clear register before usage.
* doc/extend.texi: Remove argument from __builtin_ia32_rdssp[d|q].
Add documentation for new _get_ssp and _inc_ssp intrinsics.
* testsuite/gcc.target/i386/cet-intrin-3.c: Use new _get_ssp and
_inc_ssp intrinsics.
* testsuite/gcc.target/i386/cet-intrin-4.c: Likewise.
* testsuite/gcc.target/i386/cet-rdssp-1.c: Remove argument from
__builtin_ia32_rdssp[d|q].
* libgcc/config/i386/shadow-stack-unwind.hi (_Unwind_Frames_Extra):
Use new _get_ssp and _inc_ssp intrinsics.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/cetintrin.h
trunk/gcc/config/i386/i386-builtin-types.def
trunk/gcc/config/i386/i386-builtin.def
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.md
trunk/gcc/doc/extend.texi
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/cet-intrin-3.c
trunk/gcc/testsuite/gcc.target/i386/cet-intrin-4.c
trunk/gcc/testsuite/gcc.target/i386/cet-rdssp-1.c
trunk/libgcc/ChangeLog
trunk/libgcc/config/i386/shadow-stack-unwind.h
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/84380] New: No GTY handling for language-specific target files
Date: Wed, 14 Feb 2018 15:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84380
Bug ID: 84380
Summary: No GTY handling for language-specific target files
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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While looking into GC issues, I noticed that a couple of language-dependent
target files have GTY markup, but are not included in target_gtfiles in
config.gcc
(and cannot), but there's also no mechanism to handle them (some
<lang>_target_gtfiles
matching {c, cxx, fortran}_target_objs:
powerpcspe/powerpcspe-c.c
rs6000/rs6000-c.c
s390/s390-c.c
sol2-cxx.c
spu/spu-c.c
vms/vms-c.c
This would need special treatment in config.gcc (defining matching variables)
and in configure.ac to append those lists to the per-language sections of
all_gtfiles.
Simply appending another doesn't work: gengtype complains:
gtyp-input.list:159: duplicate language tag [cp]
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From: "igor.v.tsimbalist at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84239] Reimplement rdssp[d|q] and incssp[d|q] CET intrinsics
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84239
igor.v.tsimbalist at intel dot com changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #2 from igor.v.tsimbalist at intel dot com ---
Fixed.
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Subject: [Bug target/81652] [meta-bug] -fcf-protection=full -mcet bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81652
Bug 81652 depends on bug 84239, which changed state.
Bug 84239 Summary: Reimplement rdssp[d|q] and incssp[d|q] CET intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84239
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug jit/84288] Support jit on Solaris
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84288
--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> * If DejaGnu is installed into a non-system directory, dejagnu.h isn't found
> compiling the tests. I've hacked around this by hardcoding a matching -I
> option in jit.exp.
I believe this should be handled like GMPINC: gcc/configure.ac gains an
--with-dejagnu option which ultimately sets DEJAGNUINC, that's emitted
to site.exp in gcc/Makefile.in so gcc/testsuite/jit.dg/jit.exp can
use it.
> * When gcc is configured with Solaris as and ld, a couple of tests FAIL like
> this:
>
> NOTE: test-compile-to-assembler.c.exe iteration 2 of 5: writing
> reproducer to ./test-compile-to-assembler.c.exe.reproducer.c
> ./test-compile-to-assembler.c.exe: error: in get, at cgraph.h:404
> 0xfcfd4d3a symtab_node::get(tree_node const*)
> /vol/gcc/src/hg/trunk/local/gcc/cgraph.h:401
> 0xfcfd4d3a decl_comdat_group(tree_node const*)
> /vol/gcc/src/hg/trunk/local/gcc/tree.c:708
> 0xfd0ce378 solaris_define_comdat_signature(comdat_entry**, void*)
> /vol/gcc/src/hg/trunk/local/gcc/config/sol2.c:267
> 0xfd0ce6d6 void hash_table<comdat_entry_hasher,
> xcallocator>::traverse_noresize<void*,
> &(solaris_define_comdat_signature(comdat_entry**, void*))>(void*)
> /vol/gcc/src/hg/trunk/local/gcc/hash-table.h:969
> 0xfd0ce6d6 void hash_table<comdat_entry_hasher, xcallocator>::traverse<void*,
> &(solaris_define_comdat_signature(comdat_entry**, void*))>(void*)
> /vol/gcc/src/hg/trunk/local/gcc/hash-table.h:990
> 0xfd0ce6d6 solaris_file_end()
> /vol/gcc/src/hg/trunk/local/gcc/config/sol2.c:291
> [...]
> FAIL: test-compile-to-assembler.c.exe: non-zero exit code: 7862 exp9 0 4
[...]
> Haven't yet started debugging how error_mark arrives there.
That those errors only happen during the second iteration seems to
point at a GC issue. In fact, there are problems here, cf. PR
other/84379), but no solution so far.
>From gcc-bugs-return-593328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 15:17:40 2018
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Subject: [Bug target/84279] [8 Regression] powerpc64le ICE on cvc4
Date: Wed, 14 Feb 2018 15:19:00 -0000
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--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Feb 14 15:17:04 2018
New Revision: 257661
URL: https://gcc.gnu.org/viewcvs?rev=257661&root=gcc&view=rev
Log:
gcc/
Back port from mainline
2018-02-13 Peter Bergner <bergner@vnet.ibm.com>
PR target/84279
* config/rs6000/rs6000.c (mem_operand_gpr): Disallow altivec addresses.
gcc/testsuite/
Back port from mainline
2018-02-13 Peter Bergner <bergner@vnet.ibm.com>
PR target/84279
* g++.dg/pr84279.C: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/pr84279.C
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/84279] [8 Regression] powerpc64le ICE on cvc4
Date: Wed, 14 Feb 2018 15:24:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
--- Comment #10 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
>From gcc-bugs-return-593330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 15:24:49 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
Date: Wed, 14 Feb 2018 15:28:00 -0000
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--- Comment #4 from Benjamin Buch <benni.buch at gmail dot com> ---
I can still reproduce it on R257659:
$ g++ -std=c++14 main.cpp
main.cpp: In instantiation of 'foo(T ...) [with T = {int}]::<lambda(auto:1
...)> [with auto:1 = {int}]':
main.cpp:9:6: required from 'void foo(T ...) [with T = {int}]'
main.cpp:13:10: required from here
main.cpp:8:17: error: use of 'bar' before deduction of 'auto'
sink(bar(v, T{}) ...);
~~~^~~~~~~~
$ g++ --version
g++ (GCC) 8.0.1 20180214 (experimental)
Copyright (C) 2018 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.
GCC trunk compiled on Intel(R) Core(TM) i7-6700K CPU, Ubuntu 16.04 (64 Bit)
with GCC 6.3:
$ g++-6 --version
g++-6 (Ubuntu/Linaro 6.3.0-18ubuntu2~16.04) 6.3.0 20170519
Copyright (C) 2016 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.
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Subject: [Bug c++/83990] [7 Regression] Spurious "potential null pointer dereference" warning regression from 7.1 onwards
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/84220] rs6000 builtin __builtin_vec_sld() ICEs on invalid 3rd argument
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--- Comment #2 from Will Schmidt <willschm at gcc dot gnu.org> ---
Author: willschm
Date: Wed Feb 14 15:32:02 2018
New Revision: 257662
URL: https://gcc.gnu.org/viewcvs?rev=257662&root=gcc&view=rev
Log:
[gcc]
2018-02-14 Will Schmidt <will_schmidt@vnet.ibm.com>
PR target/84220
* config/rs6000/rs6000-c.c: Update definitions for
ALTIVEC_BUILTIN_VEC_SLD, ALTIVEC_BUILTIN_VEC_SLDW,
ALTIVEC_BUILTIN_VEC_XXPERMDI builtins.
[testsuite]
2018-02-14 Will Schmidt <will_schmidt@vnet.ibm.com>
PR target/84220
* gcc.target/powerpc/pr84220-sld.c: New test.
* gcc.target/powerpc/pr84220-sld2.c: New test.
* gcc.target/powerpc/pr84220-sldw.c: New test.
* gcc.target/powerpc/pr84220-xxperm.c: New test.
* gcc.target/powerpc/pr84220-xxsld.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr84220-sld.c
trunk/gcc/testsuite/gcc.target/powerpc/pr84220-sld2.c
trunk/gcc/testsuite/gcc.target/powerpc/pr84220-sldw.c
trunk/gcc/testsuite/gcc.target/powerpc/pr84220-xxperm.c
trunk/gcc/testsuite/gcc.target/powerpc/pr84220-xxsld.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000-c.c
trunk/gcc/testsuite/ChangeLog
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84381] New: replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Wed, 14 Feb 2018 15:56:00 -0000
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Bug ID: 84381
Summary: replace non-std 'call abort' by 'stop 1' in gfortran
testsuite
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A lot of the runtime tests in gfortran.dg use the non-std intrinsic subroutine
ABORT to generate a test failure. The same could be accomplished in a fully
standard-compliant way by using "stop 1" or similar.
This replacement has been done e.g. in:
https://github.com/nncarlson/gfortran.dg/commit/82f3582391402bd01c1f8393c72ce20522ebc62
It affects a lot of test cases, but it can be done fully mechanically.
>From gcc-bugs-return-593334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 15:56:52 2018
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Subject: [Bug fortran/84382] New: add command-line options -std=gnu2003 and -std=gnu2008 for gfortran
Date: Wed, 14 Feb 2018 16:05:00 -0000
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Bug ID: 84382
Summary: add command-line options -std=gnu2003 and -std=gnu2008
for gfortran
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In analogy to the g++ options -std=gnu++17 etc (as apposed to -std=c++17),
gfortran should have options like -std=gnu2003 and -std=gnu2008 that instruct
the compiler to adhere to a given Fortran standard plus GNU extensions.
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Subject: [Bug testsuite/62234] warnings/errors from LTO cannot be tested
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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 #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #6)
> I added support for this in r256801:
> dg-lto-warning and dg-lto-message
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00257.html
Awesome! It might be worth an email to the dev list to let people aware of the
limitation know about this enhancement -- I know of least two bugs that I
should add tests for now that this works.
It might also be helpful to update the README and mention this and the other
dg-lto- directives. Let me post one.
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Subject: [Bug tree-optimization/84383] New: [8 Regression] ICE in maybe_diag_stxncpy_trunc
Date: Wed, 14 Feb 2018 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84383
Bug ID: 84383
Summary: [8 Regression] ICE in maybe_diag_stxncpy_trunc
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
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int a;
struct S { char *s; };
void bar (struct S *);
void
foo (char *b)
{
struct S c[4];
bar (c);
__builtin_strncpy (c[a].s, b, 32);
c[a].s[31] = '\0';
}
ICEs at -O2 or fails under valgrind, like:
==32746== Conditional jump or move depends on uninitialised value(s)
==32746== at 0x1234997: maybe_diag_stxncpy_trunc(gimple_stmt_iterator,
tree_node*, tree_node*) (tree-ssa-strlen.c:1881)
==32746== by 0x1235595: handle_builtin_stxncpy(built_in_function,
gimple_stmt_iterator*) (tree-ssa-strlen.c:2079)
==32746== by 0x1238BEE:
strlen_check_and_optimize_stmt(gimple_stmt_iterator*, bool*)
(tree-ssa-strlen.c:3142)
==32746== by 0x123A225:
strlen_dom_walker::before_dom_children(basic_block_def*)
(tree-ssa-strlen.c:3475)
depending on what uninitialized value dstoff has.
>From gcc-bugs-return-593337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:18:08 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:25:01 2018
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Subject: [Bug preprocessor/52899] tabstop has no effect
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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Resolution|--- |WORKSFORME
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
The option is used in c-family/c-indentation.c (since r223098):
/* Round up VIS_COLUMN to nearest tab stop. */
static unsigned int
next_tab_stop (unsigned int vis_column)
{
const unsigned int tab_width = cpp_opts->tabstop;
vis_column = ((vis_column + tab_width) / tab_width) * tab_width;
return vis_column;
}
There are no tests that exercise the option in the test suite but
c-c++-common/Wmisleading-indentation.c fails when run with -ftabstop=N set to
less than 7.
So I'm going to resolve this as WORKSFORSOME (as in "works for some use
cases"). Adding a test just for -ftabstop alone would still be useful.
>From gcc-bugs-return-593339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:30:58 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
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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> ---
Started with r255031.
>From gcc-bugs-return-593340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:48:53 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43415
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43415&action=edit
gcc8-pr84383.patch
Untested fix.
BTW, the code is still problematic, e.g. the:
if (code == ARRAY_REF || code == MEM_REF)
lhs = TREE_OPERAND (lhs, 0);
For MEM_REF, TREE_OPERAND (lhs, 0) is either ADDR_EXPR of some decl, or an
SSA_NAME, I can understand what you can do with the SSA_NAME (for the stpncpy
result comparison which will also be a SSA_NAME), but other than that it is
then apples vs. oranges e.g. in the get_addr_base_and_unit_offset calls.
Also, the comment says:
/* Look for dst[i] = '\0'; after the stxncpy() call and if found
avoid the truncation warning. */
but you aren't testing for that, but rather that there is any kind of
assignment after the strncpy call (no check that the rhs of the next_stmt is
integer_zerop).
>From gcc-bugs-return-593341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:49:21 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
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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> ---
Martin, please look at the above comment.
>From gcc-bugs-return-593342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 16:54:48 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84384] New: new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
Date: Wed, 14 Feb 2018 17:00:00 -0000
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Bug ID: 84384
Summary: new test case
gcc.target/powerpc/builtins-4-int128-runnable.c fails
on power7
Product: gcc
Version: 8.0
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Missing option on the test case perhaps?
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/builtins-4-int128-runnable.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -maltivec -mvsx -lm -o
./builtins-4-int128-runnable.exe
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:
In function 'main':
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:20:3:
error: unknown type name 'vector'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:20:21:
error: expected '=', ',', ';', 'asm' or '__attribute__' before
'vec_128_expected1'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:21:3:
error: unknown type name 'vector'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:21:22:
error: expected '=', ',', ';', 'asm' or '__attribute__' before
'vec_u128_expected1'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:3:
error: 'vec_128_expected1' undeclared (first use in this function); did you
mean 'vec_expte'?
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:3:
note: each undeclared identifier is reported only once for each function it
appears in
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:24:
error: 'vector' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:30:
error: expected ')' before '__int128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:42:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:33:3:
error: 'vec_128_result1' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:49:3:
error: 'vec_u128_result1' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:3:
error: 'vec_u128_expected1' undeclared (first use in this function); did you
mean 'vec_expte'?
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:31:
error: expected ')' before '__uint128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:44:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:69:30:
error: expected ')' before '__int128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:69:42:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:89:31:
error: expected ')' before '__uint128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:89:44:
error: expected ';' before '{' token
compiler exited with status 1
output is:
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:
In function 'main':
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:20:3:
error: unknown type name 'vector'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:20:21:
error: expected '=', ',', ';', 'asm' or '__attribute__' before
'vec_128_expected1'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:21:3:
error: unknown type name 'vector'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:21:22:
error: expected '=', ',', ';', 'asm' or '__attribute__' before
'vec_u128_expected1'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:3:
error: 'vec_128_expected1' undeclared (first use in this function); did you
mean 'vec_expte'?
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:3:
note: each undeclared identifier is reported only once for each function it
appears in
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:24:
error: 'vector' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:30:
error: expected ')' before '__int128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:32:42:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:33:3:
error: 'vec_128_result1' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:49:3:
error: 'vec_u128_result1' undeclared (first use in this function)
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:3:
error: 'vec_u128_expected1' undeclared (first use in this function); did you
mean 'vec_expte'?
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:31:
error: expected ')' before '__uint128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:50:44:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:69:30:
error: expected ')' before '__int128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:69:42:
error: expected ';' before '{' token
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:89:31:
error: expected ')' before '__uint128_t'
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.target/powerpc/builtins-4-int128-runnable.c:89:44:
error: expected ';' before '{' token
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Subject: [Bug target/84371] test case gcc.target/powerpc/builtins-3.c fails on power9
Date: Wed, 14 Feb 2018 17:01:00 -0000
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--- Comment #1 from seurer at gcc dot gnu.org ---
In addition to trunk this also fails with gcc 7
>From gcc-bugs-return-593344-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 17:01:03 2018
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Subject: [Bug fortran/84218] ICE in free_expr0, at fortran/expr.c:451
Date: Wed, 14 Feb 2018 17:10:00 -0000
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--- Comment #3 from G. Steinmetz <gscfq@t-online.de> ---
Some working variants/extentions with substring "x(i:i)" :
$ cat z2.f90
program p
integer :: i
character(3) :: x
data (x(i:i), i=1,3) /'a', 'b', 'c'/
print *, x
end
$ gfortran-8-20180211 z2.f90 -static-libgfortran
$ a.out
abc
$ cat z3.f90
program p
integer :: i
character(3) :: x
data (x(i:i), i=1,3) /3*'a'/
print *, x
end
$ gfortran-8-20180211 z3.f90 -static-libgfortran
$ a.out
aaa
$ cat z4.f90
program p
character(3) :: x
data x(1:1), x(2:2), x(3:3) /'a', 'b', 'c'/
print *, x
end
$ gfortran-8-20180211 z4.f90 -static-libgfortran
$ a.out
abc
>From gcc-bugs-return-593345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 17:10:42 2018
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
Date: Wed, 14 Feb 2018 17:23:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|CLOSED |REOPENED
Resolution|FIXED |---
--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This needs to be fixed on 7 as well.
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Subject: [Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-14
CC| |bergner at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.4
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Subject: [Bug c++/84350] [7/8 Regression] ICE with new and auto
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--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Feb 14 17:59:29 2018
New Revision: 257666
URL: https://gcc.gnu.org/viewcvs?rev=257666&root=gcc&view=rev
Log:
/cp
2018-02-14 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84350
* pt.c (do_auto_deduction): Don't check the TREE_TYPE of a null
init, early return.
/testsuite
2018-02-14 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84350
* g++.dg/cpp0x/auto49.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/auto49.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |meissner at gcc dot gnu.org
--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
So looking at the differences between -mcpu=power7 and -mcpu=power8, the
preprocessed source shows diffs like:
- __attribute__((altivec(vector__))) __int128_t vec_128_expected1,
vec_128_result1;
- __attribute__((altivec(vector__))) __uint128_t vec_u128_expected1,
vec_u128_result1;
+ vector __int128_t vec_128_expected1, vec_128_result1;
+ vector __uint128_t vec_u128_expected1, vec_u128_result1;
Not sure if vector __int128_t should be supported on power7 or not yet. Will
look into it.
>From gcc-bugs-return-593350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:00:59 2018
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Subject: [Bug c++/84350] [7 Regression] ICE with new and auto
Date: Wed, 14 Feb 2018 18:15:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE with |[7 Regression] ICE with new
|new and auto |and auto
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
>From gcc-bugs-return-593351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:15:50 2018
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Subject: [Bug fortran/84385] New: [F03] Reject invalid SELECT TYPE selector (allocate_with_source_22.f03)
Date: Wed, 14 Feb 2018 18:30:00 -0000
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Bug ID: 84385
Summary: [F03] Reject invalid SELECT TYPE selector
(allocate_with_source_22.f03)
Product: gcc
Version: 8.0
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https://github.com/nncarlson/gfortran.dg/issues/6
allocate_with_source_22.f03 violates F03:C811 ( = F08:C835). There is a check
for this clause in gfc_match_select_type, which apparently fails for that case.
>From gcc-bugs-return-593352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:30:45 2018
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Subject: [Bug c++/70401] [c++1z on mingw]compile variadic template failed
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rainer@emrich-ebersheim.de
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Let's add Rainer too.
>From gcc-bugs-return-593353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:31:02 2018
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Subject: [Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |carll at gcc dot gnu.org
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
So it seems it's not supported on power7. I talked with Carl and he's going to
test replacing vsx_hw test with p8vector_hw.
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Subject: [Bug fortran/84386] New: Implicitly declared variables in BLOCK have scope of including program unit
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Bug ID: 84386
Summary: Implicitly declared variables in BLOCK have scope of
including program unit
Product: gcc
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See
https://groups.google.com/forum/#!topic/comp.lang.fortran/62PqdmItLeI
for details of the problem. The following code should execute
without hitting a 'STOP 1'.
program foo
call block1
print *
call block2
end program foo
!
! For an implicitly declared variable (e.g., i and j here), the
! scope of the variable is from the inclusive scoping unit. That
! is, 'j = 1' in block1 is implicitly declared to be in the
! namespace of block1. In addition, the implicitly declared 'i'
! in block bah is also in the namespace of block1.
!
subroutine block1
j = 1
bah: block
i = 42
j = 42
end block bah
if (i /= 42) stop 1 ! i should be 42
if (j /= 42) stop 1
end subroutine block1
!
! In the following 'i' has an implicit declaration in the scope
! of block2. The explicit declaration of 'i' in block bah means
! that this 'i' has the scope of bah.
!
subroutine block2
i = 1
j = 1
bah: block
integer i
i = 42
j = 42
if (i /= 42) stop 1
if (j /= 42) stop 1
end block bah
if (i /= 1) stop 1
if (j /= 42) stop 1
end subroutine block2
>From gcc-bugs-return-593355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:35:42 2018
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Known to fail| |6.4.1, 7.3.1, 8.0
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Subject: [Bug preprocessor/83173] C preprocessor generates incorrect linemarkers
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Pádraig Brady <P at draigBrady dot com> changed:
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----------------------------------------------------------------------------
CC| |P at draigBrady dot com
--- Comment #5 from Pádraig Brady <P at draigBrady dot com> ---
Seeing this also with GCC 7.3. Will try proposed patches
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Subject: [Bug c++/84314] [8 Regression] Another ICE in finish_member_declaration
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 43416
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43416&action=edit
patch
Patch awaiting review.
>From gcc-bugs-return-593359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 18:52:30 2018
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed in GCC 7 as well.
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
Date: Wed, 14 Feb 2018 18:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84372
--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Feb 14 18:48:53 2018
New Revision: 257667
URL: https://gcc.gnu.org/viewcvs?rev=257667&root=gcc&view=rev
Log:
Back port from mainline
2018-02-13 Peter Bergner <bergner@vnet.ibm.com>
PR target/84372
* gcc.target/powerpc/lvsl-lvsr.c: Also match lxv when compiling
with -mcpu=power9.
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/lvsl-lvsr.c
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Subject: [Bug target/84372] test case gcc.target/powerpc/lvsl-lvsr.c fails on power9
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84372
Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
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Subject: [Bug preprocessor/83173] C preprocessor generates incorrect linemarkers
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83173
--- Comment #6 from Mike Gulick <mgulick at mathworks dot com> ---
(In reply to Pádraig Brady from comment #5)
> Seeing this also with GCC 7.3. Will try proposed patches
Latest version of patch and test:
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00557.html
Test: https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01993.html
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Subject: [Bug fortran/84387] New: Defined output does not work for a derived type that has no components
Date: Wed, 14 Feb 2018 19:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84387
Bug ID: 84387
Summary: Defined output does not work for a derived type that
has no components
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Consider the following:
--- begin console output ---
C:\Temp>type p.f90
module m
type :: t
private
!integer :: m_i = 0 !<-- ***
contains
private
procedure, pass(this) :: write_t
generic, public :: write(formatted) => write_t
end type
contains
subroutine write_t(this, lun, iotype, vlist, istat, imsg)
! argument definitions
class(t), intent(in) :: this
integer, intent(in) :: lun
character(len=*), intent(in) :: iotype
integer, intent(in) :: vlist(:)
integer, intent(out) :: istat
character(len=*), intent(inout) :: imsg
write(lun, fmt=*, iostat=istat, iomsg=imsg) "Hello World!"
return
end subroutine write_t
end module
program p
use m, only : t
type(t) :: foo
print "(dt)", foo !<-- or list-directed: print *, foo
end program
C:\Temp>gfortran p.f90 -o p.exe
C:\Temp>p.exe
C:\Temp>
--- end console output ---
Program run-time behavior suggests the defined output with the object foo with
type(t) is not executed. Is this intended? I didn't notice anything in the
Fortran standard (10-007r1 document toward Fortran 2008) that suggests such a
behavior. Program built with another compiler printed "Hello World!" as I
expected.
Fyi in case it is of any relevance: if the line marked *** above corresponding
to a component of type(t) is uncommented and the program is then rebuilt using
gfortran, the output is:
C:\Temp>p.exe
Hello World!
Thanks for your time and attention,
Vipul Parekh
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Subject: [Bug testsuite/84388] New: test case gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c fails on power9
Date: Wed, 14 Feb 2018 19:19:00 -0000
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Bug ID: 84388
Summary: test case
gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-
p9.c fails on power9
Product: gcc
Version: 7.3.1
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This test case was updated a couple times on trunk but not for gcc-7. See
r253606 and r248202 for instance.
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-7/gcc/xgcc
-B/home/seurer/gcc/build/gcc-7/gcc/
/home/seurer/gcc/gcc-7/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -maltivec -mvsx
-mcpu=power9 -O2 -ffat-lto-objects -S -o fold-vec-mult-int128-p9.s
PASS: gcc.target/powerpc/fold-vec-mult-int128-p9.c (test for excess errors)
FAIL: gcc.target/powerpc/fold-vec-mult-int128-p9.c scan-assembler-times [
\t]xsmulqp 2
Executing on host: /home/seurer/gcc/build/gcc-7/gcc/xgcc
-B/home/seurer/gcc/build/gcc-7/gcc/ vmx_hw_available32556.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -mno-vsx -lm -o
vmx_hw_available32556.exe (timeout = 300)
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Subject: [Bug fortran/84389] New: Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Wed, 14 Feb 2018 19:20:00 -0000
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Bug ID: 84389
Summary: Defined output: unexpected compiler error with the use
of ":" edit descriptor
Product: gcc
Version: 8.0
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Consider the following:
--- begin console output ---
C:\Temp>type p.f90
module m
type :: t
private
contains
private
procedure, pass(this) :: write_t
generic, public :: write(formatted) => write_t
end type
contains
subroutine write_t(this, lun, iotype, vlist, istat, imsg)
! argument definitions
class(t), intent(in) :: this
integer, intent(in) :: lun
character(len=*), intent(in) :: iotype
integer, intent(in) :: vlist(:)
integer, intent(out) :: istat
character(len=*), intent(inout) :: imsg
write(lun, fmt=*, iostat=istat, iomsg=imsg) "Hello World!"
return
end subroutine write_t
end module
program p
use m, only : t
type(t) :: foo(2)
print "(*(dt:,','))", foo
end program
C:\Temp>gfortran p.f90 -o p.exe
p.f90:37:14:
print "(*(dt:,','))", foo
1
Error: Unexpected element ':' in format string at (1)
C:\Temp>
--- end output ---
Program compiled and built using another toolset gives my expected output:
Hello World!,Hello World!
Cheers,
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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/84385] [F03] Reject invalid SELECT TYPE selector (allocate_with_source_22.f03)
Date: Wed, 14 Feb 2018 19:22:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-14
Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from janus at gcc dot gnu.org ---
Draft patch:
Index: gcc/fortran/match.c
===================================================================
--- gcc/fortran/match.c (revision 257635)
+++ gcc/fortran/match.c (working copy)
@@ -6201,6 +6201,7 @@ gfc_match_select_type (void)
|| CLASS_DATA (expr1)->attr.codimension)
&& expr1->ref
&& expr1->ref->type == REF_ARRAY
+ && expr1->ref->u.ar.type == AR_FULL
&& expr1->ref->next == NULL);
/* Check for F03:C811. */
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Subject: [Bug target/84369] test case gcc.dg/sms-10.c fails on power9
Date: Wed, 14 Feb 2018 19:22:00 -0000
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--- Comment #1 from seurer at gcc dot gnu.org ---
Also fails with gcc 7 and gcc 6 on power9
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 19:27:00 -0000
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--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
Created attachment 43417
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43417&action=edit
Proposed patch to merge altivec patterns.
Hi Kaushik,
Can you see if the following unetsted patch fixes your ICE? In the end, it's
cleaner to just combine the two patterns.
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Subject: [Bug target/84390] New: test case gcc.target/powerpc/vsxcopy.c fails for gcc 7 and gcc 6 on power9
Date: Wed, 14 Feb 2018 19:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84390
Bug ID: 84390
Summary: test case gcc.target/powerpc/vsxcopy.c fails for gcc 7
and gcc 6 on power9
Product: gcc
Version: 7.3.1
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This works OK on trunk.
make -k check-gcc RUNTESTFLAGS=powerpc.exp=gcc.target/powerpc/vsxcopy.c
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-7/gcc/xgcc
-B/home/seurer/gcc/build/gcc-7/gcc/
/home/seurer/gcc/gcc-7/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O1 -mvsx
-ffat-lto-objects -S -o vsxcopy.s
PASS: gcc.target/powerpc/vsxcopy.c (test for excess errors)
FAIL: gcc.target/powerpc/vsxcopy.c scan-assembler lxvd2x
FAIL: gcc.target/powerpc/vsxcopy.c scan-assembler stxvd2x
PASS: gcc.target/powerpc/vsxcopy.c scan-assembler-not xxpermdi
It looks like the trunk copy of the testcase was updated:
seurer@perch:~/gcc/build/gcc-7$ diff
/home/seurer/gcc/gcc-7/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
4,5c4,5
< /* { dg-final { scan-assembler "lxvd2x" } } */
< /* { dg-final { scan-assembler "stxvd2x" } } */
---
> /* { dg-final { scan-assembler {\m(lxvd2x|lxv)\M} } } */
> /* { dg-final { scan-assembler {\m(stxvd2x|stxv)\M} } } */
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Subject: [Bug target/84390] test case gcc.target/powerpc/vsxcopy.c fails for gcc 7 and gcc 6 on power9
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Mine. Needs the same lxvd2x|lxv fix we used on other test cases.
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--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Feb 14 19:56:25 2018
New Revision: 257670
URL: https://gcc.gnu.org/viewcvs?rev=257670&root=gcc&view=rev
Log:
PR target/84390
* gcc.target/powerpc/vsxcopy.c: Also match lxv when compiling
with -mcpu=power9.
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
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--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Feb 14 20:03:21 2018
New Revision: 257671
URL: https://gcc.gnu.org/viewcvs?rev=257671&root=gcc&view=rev
Log:
Backport from GCC 7 branch
2018-02-14 Peter Bergner <bergner@vnet.ibm.com>
PR target/84390
* gcc.target/powerpc/vsxcopy.c: Also match lxv when compiling
with -mcpu=power9.
Modified:
branches/gcc-6-branch/gcc/testsuite/ChangeLog
branches/gcc-6-branch/gcc/testsuite/gcc.target/powerpc/vsxcopy.c
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--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as fixed.
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--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on both release branches.
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Subject: [Bug preprocessor/82939] genmatch fills up terminal with endless printing of periods
Date: Wed, 14 Feb 2018 20:19:00 -0000
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #7)
> It works when I use a previous version of gcc I built myself though. (8.0
> from 20170525)
Regardless of the fact that I was able to work around this bug, I'm still
wondering why those periods need to be printed in the first place? Would it
break anything to just remove that loop?
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Subject: [Bug target/79242] [7 Regression] ICE in simplify_subreg, at simplify-rtx.c:6029
Date: Wed, 14 Feb 2018 20:20:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
CC| |egallager at gcc dot gnu.org
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #9)
> Author: law
> Date: Wed Feb 14 07:21:11 2018
> New Revision: 257653
>
> URL: https://gcc.gnu.org/viewcvs?rev=257653&root=gcc&view=rev
> Log:
> 2018-02-14 Jozef Lawrynowicz <jozefl.gcc@gmail.com>
>
> PR target/79242
> * machmode.def: Define a complex mode for PARTIAL_INT.
> * genmodes.c (complex_class): Return MODE_COMPLEX_INT for
> MODE_PARTIAL_INT.
> * doc/rtl.texi: Document CSPImode.
> * config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
> handling.
> (msp430_hard_regno_nregs_with_padding): Likewise.
>
> PR target/79242
> * gcc.target/msp430/pr79242.c: New test.
>
> Added:
> trunk/gcc/testsuite/gcc.target/msp430/pr79242.c
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/config/msp430/msp430.c
> trunk/gcc/doc/rtl.texi
> trunk/gcc/genmodes.c
> trunk/gcc/machmode.def
> trunk/gcc/testsuite/ChangeLog
Did this fix it?
>From gcc-bugs-return-593376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:20:13 2018
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Subject: [Bug c++/84269] C++ FE does not suggest which #include to use for "memset"
Date: Wed, 14 Feb 2018 20:24:00 -0000
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Another one: std::make_tuple
...and so on.
>From gcc-bugs-return-593377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:24:50 2018
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Subject: [Bug target/84390] test case gcc.target/powerpc/vsxcopy.c fails for gcc 7 and gcc 6 on power9
Date: Wed, 14 Feb 2018 20:36:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-02/msg00867.ht
| |ml
--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing for real now.
>From gcc-bugs-return-593378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:36:15 2018
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Subject: [Bug c++/84360] unnecessary aka in error message
Date: Wed, 14 Feb 2018 20:38:00 -0000
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
As I understand it, "using" is a more modern form of typedef (e.g. with
template support).
So should this ideally read:
return type ‘T’ {aka ‘class std::tuple<int, int, int>’} is incomplete
to express both the name the code used, and the underlying type?
>From gcc-bugs-return-593379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:38:30 2018
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Subject: [Bug c++/84360] unnecessary aka in error message
Date: Wed, 14 Feb 2018 20:43:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #3)
> So should this ideally read:
> return type ‘T’ {aka ‘class std::tuple<int, int, int>’} is incomplete
> to express both the name the code used, and the underlying type?
Yes.
>From gcc-bugs-return-593380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:43:07 2018
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Subject: [Bug driver/84391] New: External specs file misinterpreted, unless read twice
Date: Wed, 14 Feb 2018 20:49:00 -0000
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Bug ID: 84391
Summary: External specs file misinterpreted, unless read twice
Product: gcc
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I'm experimenting with a customised GCC specs file, to enable selection of
alternative runtime libraries for MinGW. I started by extracting the default
(built-in) specs:
$ mingw32-gcc -dumpspecs > lib/gcc/mingw32/6.3.0/specs
This causes mingw32-gcc to read its default specs from this file, ignoring the
built-in specs. So far, so good; all behaves as expected, (and as documented).
Adding the '-v' option confirms that the specs are now read from the external
file, and built-in specs are not used.
Next, I defined new specs strings, within my external specs file:
*msvcrt_id:
-D__MSVCRT_VERSION__=0x0
*msvcrt_version:
${msvcr*:$(msvcrt_id)%*0} $<msvcr*
and I prepended:
*cpp:
%(msvcrt_version) ...original cpp spec-string unchanged...
in place, to the original cpp spec-string, within the same specs file.
The intent is to interpret a custom '-msvcr90' option (say), to set the MinGW
specific '__MSVCRT_VERSION__' feature macro as appropriate for using
MSVCR90.DLL, rather than the MSVCRT.DLL default. However, if I specify it,
using natural invocation syntax, I see:
$ mingw32-gcc -E -dM -msvcr90 -xc /dev/null | grep MSVCRT
mingw32-gcc: error: unrecognized command line option '-msvcr90'
Conversely, if I adopt this alternative (unnatural) invocation syntax:
$ mingw32-gcc -specs=specs -E -dM -msvcr90 -xc /dev/null | grep MSVCRT
#define __MSVCRT_VERSION__ 0x0900
#define __MSVCRT__ 1
I see exactly the effect I am trying to achieve.
If I add the '-v' option to the former (failing) command, I see that my
external specs file is read once, (before any other output is produced); if I
add '-v' to the latter (successful) command, I see that my external specs file
is read twice, (again, before any other output is produced).
FWIW, I also see the expected behaviour if I augment the built-in specs, by
placing my customisations in an alternatively named auxiliary specs file, (say
mingw.specs), and invoke:
$ mingw32-gcc -specs=mingw.specs -E -dM -msvcr90 -xc /dev/null | grep MSVCRT
#define __MSVCRT_VERSION__ 0x0900
#define __MSVCRT__ 1
Unless I'm overlooking something, I guess this is a bug in the way GCC
processes an external specs file explicitly named as 'specs', when reading it
implicitly; it seems that it may be worked around by loading it explicitly,
(although this is certainly much less convenient).
>From gcc-bugs-return-593381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:49:08 2018
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Subject: [Bug c++/79361] [6 Regression] ICE redefining a template function as defaulted or deleted
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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> ---
Let's close this as fixed in 7.1.0.
>From gcc-bugs-return-593382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 20:58:05 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
Date: Wed, 14 Feb 2018 21:02:00 -0000
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--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #10)
> Jakub had it correct in comment #8.
Yeah, I have no idea how I got that completely wrong notion. Sorry all.
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Subject: [Bug target/84392] New: test case gcc.dg/graphite/uns-interchange-9.c and 3 others fail on power9
Date: Wed, 14 Feb 2018 21:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84392
Bug ID: 84392
Summary: test case gcc.dg/graphite/uns-interchange-9.c and 3
others fail on power9
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
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These 4 tests fail on power9
FAIL: gcc.dg/graphite/uns-interchange-9.c scan-tree-dump graphite "tiled"
FAIL: gcc.dg/graphite/interchange-3.c scan-tree-dump graphite "tiled"
FAIL: gcc.dg/graphite/interchange-7.c scan-tree-dump graphite "tiled"
FAIL: gcc.dg/graphite/interchange-9.c scan-tree-dump graphite "tiled"
They appear to be erratic in failing; while trying to track down an originating
revision I was seeing some older revisions work and then later fail.
When they fail they all fail the same way:
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-trunk/gcc/xgcc
-B/home/seurer/gcc/build/gcc-trunk/gcc/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gcc.dg/graphite/interchange-3.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -ffast-math
-floop-nest-optimize -fdump-tree-graphite-all -lm -o ./interchange-3.exe
PASS: gcc.dg/graphite/interchange-3.c (test for excess errors)
. . .
PASS: gcc.dg/graphite/interchange-3.c execution test
FAIL: gcc.dg/graphite/interchange-3.c scan-tree-dump graphite "tiled"
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Subject: [Bug libgomp/84393] New: "make install" omits gfortran modules, following cross-native build
Date: Wed, 14 Feb 2018 21:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84393
Bug ID: 84393
Summary: "make install" omits gfortran modules, following
cross-native build
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
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CC: jakub at gcc dot gnu.org
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I've successfully built, and installed, GCC-6.3.0 as a GNU/Linux hosted cross
compiler suite for the mingw32 target; the language set includes fortran, and
libgomp is enabled. I then proceeded to use this cross compiler suite to
create a cross native build, for deployment on the mingw32 host itself.
When installing the cross compiler suite, "make install" has added the
following eight files to my
$CROSS_COMPILER_ROOT/lib/gcc/mingw32/6.3.0/finclude:
omp_lib.f90
omp_lib.h
omp_lib_kinds.mod
omp_lib.mod
openacc.f90
openacc_kinds.mod
openacc_lib.h
openacc.mod
However, when staging the cross native build, "make install" neglects to
install any of these files.
>From gcc-bugs-return-593385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 21:14:10 2018
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Subject: [Bug target/83984] ld: The value 0x8000000000005 does not fit when applying the relocation DIR21L
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--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Author: danglin
Date: Wed Feb 14 21:13:26 2018
New Revision: 257672
URL: https://gcc.gnu.org/viewcvs?rev=257672&root=gcc&view=rev
Log:
PR target/83984
* config/pa/pa.md: Load address of PIC label using the linkage table
if the label is nonlocal.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/pa/pa.md
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Subject: [Bug testsuite/84094] several correctness issues in gfortran.dg
Date: Wed, 14 Feb 2018 21:50:00 -0000
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Bug 84094 depends on bug 84385, which changed state.
Bug 84385 Summary: [F03] Reject invalid SELECT TYPE selector (allocate_with_source_22.f03)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84385
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/84385] [F03] Reject invalid SELECT TYPE selector (allocate_with_source_22.f03)
Date: Wed, 14 Feb 2018 21:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84385
--- Comment #2 from janus at gcc dot gnu.org ---
Author: janus
Date: Wed Feb 14 21:46:59 2018
New Revision: 257673
URL: https://gcc.gnu.org/viewcvs?rev=257673&root=gcc&view=rev
Log:
2018-02-14 Janus Weil <janus@gcc.gnu.org>
PR fortran/84385
* match.c (gfc_match_select_type): Fix check for selector in
SELECT TYPE statement.
2018-02-14 Janus Weil <janus@gcc.gnu.org>
PR fortran/84385
* gfortran.dg/allocate_with_source_22.f03: Fix invalid test case.
* gfortran.dg/allocate_with_source_23.f90: Ditto.
* gfortran.dg/select_type_1.f03: Extend test case.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/match.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/allocate_with_source_22.f03
trunk/gcc/testsuite/gfortran.dg/allocate_with_source_23.f03
trunk/gcc/testsuite/gfortran.dg/select_type_1.f03
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Subject: [Bug fortran/84385] [F03] Reject invalid SELECT TYPE selector (allocate_with_source_22.f03)
Date: Wed, 14 Feb 2018 22:03:00 -0000
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #3 from janus at gcc dot gnu.org ---
Fixed with r257673. Closing.
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Subject: [Bug c/84108] [8 Regression] incorrect -Wattributes warning for packed/aligned conflict on struct members
Date: Wed, 14 Feb 2018 22:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84108
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Feb 14 22:02:43 2018
New Revision: 257674
URL: https://gcc.gnu.org/viewcvs?rev=257674&root=gcc&view=rev
Log:
PR middle-end/84108 - incorrect -Wattributes warning for packed/aligned
conflict on struct members
gcc/ChangeLog:
PR c/84108
* attribs.c (diag_attr_exclusions): Consider the exclusion(s)
that correspond to the kind of a declaration.
gcc/testsuite/ChangeLog:
PR c/84108
* gcc.dg/Wattributes-8.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Wattributes-8.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/attribs.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
Date: Wed, 14 Feb 2018 22:16:00 -0000
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Carl Love <carll at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #4 from Carl Love <carll at gcc dot gnu.org> ---
Commited patch to update the dg directives.
commit 257675 2/14/2018
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=257675
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Subject: [Bug c/84108] [8 Regression] incorrect -Wattributes warning for packed/aligned conflict on struct members
Date: Wed, 14 Feb 2018 22:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84108
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in r257674.
(In reply to Arnd Bergmann from comment #3)
If you see any other problems (e.g., those I asked about in comment 5), rather
than reopening this bug please open a new one.
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From: "csolomon at lanl dot gov" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84394] New: compiler error when using modules with derived types in block data subprograms
Date: Wed, 14 Feb 2018 22:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84394
Bug ID: 84394
Summary: compiler error when using modules with derived types
in block data subprograms
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: csolomon at lanl dot gov
Target Milestone: ---
Created attachment 43418
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43418&action=edit
Simplified reproducer of the error.
Configuration info:
gfortran -v
Using built-in specs.
COLLECT_GCC=/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix
/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install
Thread model: posix
gcc version 8.0.1 20180211 (experimental) (GCC)
Problem info:
When compiling a block data subprogram that uses a module containing a derived
type the error below is obtained. An error (without as much detail) also
occurs with GCC 7.3.0, but does not occur with GCC 6.4.0. A simplified
reproducer is attached.
gfortran -Wall -Wextra block_data_bug.f90 -o test
in gfc_format_decoder, at fortran/error.c:943
0x597156 gfc_format_decoder
../../gcc/fortran/error.c:943
0x1583bf7 pp_format(pretty_printer*, text_info*)
../../gcc/pretty-print.c:1375
0x1574307 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
../../gcc/diagnostic.c:984
0x76c2ba gfc_error_opt
../../gcc/fortran/error.c:1308
0x76d7b0 gfc_error(char const*, ...)
../../gcc/fortran/error.c:1337
0x7f911f check_conflict
../../gcc/fortran/symbol.c:485
0x7dbb3a resolve_component
../../gcc/fortran/resolve.c:13642
0x7dc29a resolve_fl_derived0
../../gcc/fortran/resolve.c:14018
0x7dc867 resolve_fl_derived0
../../gcc/fortran/resolve.c:14162
0x7dc867 resolve_fl_derived
../../gcc/fortran/resolve.c:14140
0x7d9127 resolve_symbol
../../gcc/fortran/resolve.c:14514
0x7fa612 do_traverse_symtree
../../gcc/fortran/symbol.c:4157
0x7d3123 resolve_types
../../gcc/fortran/resolve.c:16415
0x7d819c gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16529
0x7c5fa6 gfc_parse_file()
../../gcc/fortran/parse.c:6262
0x80c6df gfc_be_parse_file
../../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.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 22:26:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #43417|0 |1
is obsolete| |
--- Comment #10 from Peter Bergner <bergner at gcc dot gnu.org> ---
Created attachment 43419
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43419&action=edit
Updated patch without debug cruft. No other changes.
Oops, I didn't mean to leave in stuff to make my make check less noisy. Here's
an updated patch.
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Subject: [Bug c++/52277] spell corrector for misspelled identifiers
Date: Wed, 14 Feb 2018 22:28:00 -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 #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #3)
> Implementation of Levenshtein distance (in C++) committed to trunk as
> r230285; currently we offer hints for misspelled command-line options (PR
> 67613), and in the C FE for misspelled fields.
>
> There's plenty more that could be implemented; see:
> https://gcc.gnu.org/ml/gcc-patches/2015-09/msg01090.html
> for some other implementation ideas.
I'm thinking it'd make sense to close this bug, since the basic spell corrector
is in, and open separate issues for the "plenty more that could be implemented"
so they can be focused on individually
>From gcc-bugs-return-593395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 14 22:28:21 2018
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Subject: [Bug c++/52277] spell corrector for misspelled identifiers
Date: Wed, 14 Feb 2018 22:47:00 -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 David Malcolm from comment #3)
> > Implementation of Levenshtein distance (in C++) committed to trunk as
> > r230285; currently we offer hints for misspelled command-line options (PR
> > 67613), and in the C FE for misspelled fields.
> >
> > There's plenty more that could be implemented; see:
> > https://gcc.gnu.org/ml/gcc-patches/2015-09/msg01090.html
> > for some other implementation ideas.
>
> I'm thinking it'd make sense to close this bug, since the basic spell
> corrector is in, and open separate issues for the "plenty more that could be
> implemented" so they can be focused on individually
Or, if opening separate issues, maybe this one could actually stay open and
become a meta-bug for all the other spell checker issues
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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++/52277] spell corrector for misspelled identifiers
Date: Wed, 14 Feb 2018 23:00:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Heh, I'd forgotten that this one was still open.
(In reply to David Malcolm from comment #3)
> Implementation of Levenshtein distance (in C++) committed to trunk as
> r230285; currently we offer hints for misspelled command-line options (PR
> 67613), and in the C FE for misspelled fields.
>
> There's plenty more that could be implemented; see:
> https://gcc.gnu.org/ml/gcc-patches/2015-09/msg01090.html
> for some other implementation ideas.
I think all of those ideas are done now; there may be others, but we can open
separate RFEs for them.
Let's close this one out.
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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++/84192] [7/8 Regression] ICE with statement expression
Date: Wed, 14 Feb 2018 23:00:00 -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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I wonder if we shouldn't just force a STATEMENT_LIST around the
statement-expression even if it contains just a single statement (in
finish_stmt_expr).
Then the constexpr.c code would know it deals with a statement expression and
would arrange for jump_target to be passed around, like it does when using:
bool bar()
{
return ({ (void) 0; return true; }) && false;
}
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/67613] spell suggestions for misspelled command line options
Date: Wed, 14 Feb 2018 23:05:00 -0000
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Bug 67613 depends on bug 52277, which changed state.
Bug 52277 Summary: spell corrector for misspelled identifiers
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52277
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Wed, 14 Feb 2018 23:09:00 -0000
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--- Comment #11 from Peter Bergner <bergner at gcc dot gnu.org> ---
Ah, testing my patch, we're getting duplicate named patterns. I'll have to
think about this.
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Subject: [Bug testsuite/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Wed, 14 Feb 2018 23:22:00 -0000
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Neil Carlson <neil.n.carlson at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |neil.n.carlson at gmail dot com
--- Comment #1 from Neil Carlson <neil.n.carlson at gmail dot com> ---
If the replacement could still be done mechanically (beyond my sed scripting
skills), it would be useful to replace occurrences of ABORT with a sequence of
stop statements; i.e., "stop 1", "stop 2", etc. Then a failure would point to a
specific location, and not one of several possible locations.
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Subject: [Bug tree-optimization/83698] bogus offset in -Wrestrict messages for strcat of unknown strings
Date: Wed, 14 Feb 2018 23:23:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Feb 14 23:22:15 2018
New Revision: 257676
URL: https://gcc.gnu.org/viewcvs?rev=257676&root=gcc&view=rev
Log:
PR tree-optimization/83698 - bogus offset in -Wrestrict messages for strcat of
unknown strings
gcc/ChangeLog:
PR tree-optimization/83698
* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): For
arrays constrain the offset range to their bounds.
(builtin_access::strcat_overlap): Adjust the bounds of overlap offset.
(builtin_access::overlap): Avoid setting the size of overlap if it's
already been set.
(maybe_diag_overlap): Also consider arrays when deciding what values
of offsets to include in diagnostics.
gcc/testsuite/ChangeLog:
PR tree-optimization/83698
* gcc.dg/Wrestrict-7.c: New test.
* c-c++-common/Wrestrict.c: Adjust expected values for strcat.
* gcc.target/i386/chkp-stropt-17.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/Wrestrict-7.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-warn-restrict.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/Wrestrict.c
trunk/gcc/testsuite/gcc.target/i386/chkp-stropt-17.c
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Subject: [Bug tree-optimization/83698] bogus offset in -Wrestrict messages for strcat of unknown strings
Date: Wed, 14 Feb 2018 23:28:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in r257676.
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Subject: [Bug tree-optimization/84395] New: -Wstringop-truncation where -Wstringop-overflow is expected
Date: Wed, 14 Feb 2018 23:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84395
Bug ID: 84395
Summary: -Wstringop-truncation where -Wstringop-overflow is
expected
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The test case below triggers what looks like a bogus -Wstringop-truncation
warning when it instead should trigger -Wstringop-overflow.
The -Wstringop-truncation warning indicates that the checker considers the size
of the entire array (i.e., 3 * 7 chars) when it should consider the size of the
subarray a[i] (i.e., 7 chars).
The missing -Wstringop-overflow suggests this checker is doing the same.
$ cat t.c && gcc -O2 -S -Wall -Wextra t.c
char a[3][7];
void f (const char *s, int i)
{
__builtin_strncpy (a[i], s, 21); // -Wstringop-truncation but no
-Wstringop-overflow?
a[i][6] = 0;
}
t.c: In function ‘f’:
t.c:5:3: warning: ‘__builtin_strncpy’ specified bound 21 equals destination
size [-Wstringop-truncation]
__builtin_strncpy (a[i], s, 21); // -Wstringop-truncation but no
-Wstringop-overflow?
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug target/84384] new test case gcc.target/powerpc/builtins-4-int128-runnable.c fails on power7
Date: Wed, 14 Feb 2018 23:37:00 -0000
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Carl Love <carll at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
--- Comment #5 from Carl Love <carll at gcc dot gnu.org> ---
Closing bug. Issue is fixed.
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84396] New: missing -Wstringop-truncation with non-nul assignment to destination
Date: Wed, 14 Feb 2018 23:39:00 -0000
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Bug ID: 84396
Summary: missing -Wstringop-truncation with non-nul assignment
to destination
Product: gcc
Version: 8.0
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As pointed out in bug 84383 comment #2, a comment in the -Wstringop-truncation
checker suggests that the warning should be suppressed by the assignment of
'\0' to the destination after a potentially truncating call to strncpy.
However, an inspection of the code as well as the test case below indicate that
assigning even a non-NUL value to the destination suppresses the warning.
$ cat t.c && gcc -O2 -S -Wall -Wextra t.c
char a[7];
void f (const char *s)
{
__builtin_strncpy (a, s, sizeof a); // -Wstringop-truncation (good)
}
void g (const char *s)
{
__builtin_strncpy (a, s, sizeof a); // no -Wstringop-truncation (good)
a[sizeof a - 1] = 0;
}
void h (const char *s)
{
__builtin_strncpy (a, s, sizeof a); // missing -Wstringop-truncation
a[sizeof a - 1] = '\n';
}
t.c: In function ‘f’:
t.c:5:3: warning: ‘__builtin_strncpy’ specified bound 7 equals destination size
[-Wstringop-truncation]
__builtin_strncpy (a, s, sizeof a); // -Wstringop-truncation (good)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
Date: Wed, 14 Feb 2018 23:53:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=84395,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=84396
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
Yes, the code isn't perfect. I think one bug is what you already pointed out
in the -Wrestrict code (bug 84095 comment #1) and that I recently submitted a
fix for. There may be others. I just filed bug 84395 for one issue. I'll see
what other test cases I can come up with and open bugs for the problems I find.
The reference to '\0' in the comment describes the ideal goal I had in mind.
It might be worth tightening things up to look for a literal zero. I raised
bug 84396 for this.
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Subject: [Bug target/83984] ld: The value 0x8000000000005 does not fit when applying the relocation DIR21L
Date: Thu, 15 Feb 2018 00:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83984
John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-593408-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 00:27:28 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84397] New: missing -Wstringop-truncation on strncpy into a multidimensional array
Date: Thu, 15 Feb 2018 00:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84397
Bug ID: 84397
Summary: missing -Wstringop-truncation on strncpy into a
multidimensional array
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The -Wstringop-truncation detects the potential string truncation in the first
strncpy call below but fails to detect the similar problem in the second call.
$ cat a.c && gcc -O2 -S -Wall a.c
char a[2][7];
void f0 (const char *s)
{
__builtin_strncpy (a[0], s, sizeof a[0]); // missing -Wstringop-truncation
}
void f1 (const char *s)
{
__builtin_strncpy (a[1], s, sizeof a[1]); // -Wstringop-truncation (good)
}
void fi (const char *s, int i)
{
__builtin_strncpy (a[i], s, sizeof a[i]); // missing -Wstringop-truncation
}
a.c: In function ‘f1’:
a.c:10:3: warning: ‘__builtin_strncpy’ specified bound 7 equals destination
size [-Wstringop-truncation]
__builtin_strncpy (a[1], s, sizeof a[1]); // -Wstringop-truncation (good)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug fortran/84394] compiler error when using modules with derived types in block data subprograms
Date: Thu, 15 Feb 2018 00:41:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
CC| |kargl at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from kargl at gcc dot gnu.org ---
Further reduced testcase
module mod1
implicit none
type :: type1
integer :: i1
end type type1
end module
module mod2
implicit none
contains
subroutine sub1
integer vals
common /block1/ vals(5)
if (any(vals /= [1, 2, 3, 4, 5])) stop 1
end subroutine
end module
block data blkdat
use mod1
integer vals
common /block1/ vals(5)
data vals/1, 2, 3, 4, 5/
end block data blkdat
program main
use mod2, only: sub1
implicit none
call sub1
end program
Looking at
0x7f911f check_conflict
../../gcc/fortran/symbol.c:485
This is really odd. gdb shows
Breakpoint 1, check_conflict (attr=attr@entry=0x203caec38,
name=0x203c22430 "_deallocate", where=where@entry=0x203caec78)
at ../../gcc/gcc/fortran/symbol.c:485
485 gfc_error("%s attribute not allowed in BLOCK DATA program "
(gdb) p *where
$1 = {nextc = 0x0, lb = 0x0}
So, gfortran is inserting a _deallocate (perhaps for a temporary array).
I suspect were can the conflict check for a name starting with an
underscore.
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Subject: [Bug tree-optimization/84397] missing -Wstringop-truncation on strncpy into a multidimensional array
Date: Thu, 15 Feb 2018 00:41:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=84395
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is probably due to the same underlying problem as bug 84395. The checker
computes the remaining space in the outermost object (via compute_objsize)
instead of figuring out the size of the referenced array.
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Subject: [Bug fortran/84394] compiler error when using modules with derived types in block data subprograms
Date: Thu, 15 Feb 2018 00:48:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Known to fail| |7.3.1, 8.0
>From gcc-bugs-return-593412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 00:48:03 2018
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84394] compiler error when using modules with derived types in block data subprograms
Date: Thu, 15 Feb 2018 00:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84394
--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #1)
> Breakpoint 1, check_conflict (attr=attr@entry=0x203caec38,
> name=0x203c22430 "_deallocate", where=where@entry=0x203caec78)
> at ../../gcc/gcc/fortran/symbol.c:485
> 485 gfc_error("%s attribute not allowed in BLOCK DATA program "
> (gdb) p *where
> $1 = {nextc = 0x0, lb = 0x0}
>
> So, gfortran is inserting a _deallocate (perhaps for a temporary array).
> I suspect were can the conflict check for a name starting with an
> underscore.
I forgot to mention that attr->access = ACCESS_PRIVATE, which
the actual root cause. I also suspect that the attr is re-using
a previous attr struct without clear it first. In any case, the
following works around the problem.
Index: symbol.c
===================================================================
--- symbol.c (revision 257665)
+++ symbol.c (working copy)
@@ -479,11 +479,10 @@ check_conflict (symbol_attribute *attr, const char *na
if (attr->intent != INTENT_UNKNOWN)
a1 = intent;
- if (a1 != NULL)
+ if (a1 != NULL && *name != '_')
{
- gfc_error
- ("%s attribute not allowed in BLOCK DATA program unit at %L",
- a1, where);
+ gfc_error("%s attribute not allowed in BLOCK DATA program "
+ "unit at %L", a1, where);
return false;
}
}
>From gcc-bugs-return-593413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 00:49:18 2018
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Subject: [Bug driver/84391] External specs file misinterpreted, unless read twice
Date: Thu, 15 Feb 2018 01:11:00 -0000
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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> ---
This is the correct behavior; the driver itself has option checking. If you
want a custom option, you need to either use directly the -specs option which
disables option checking or add the .opt file inside GCC to say the option is a
driver only option.
GCC will either use its internal specs or use the file called specs for the
specs but that does not disable option checking.
>From gcc-bugs-return-593414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 01:11:26 2018
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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/84398] New: missing -Wstringop-truncation on strncpy into VLA and dynamically allocated arrays
Date: Thu, 15 Feb 2018 01:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84398
Bug ID: 84398
Summary: missing -Wstringop-truncation on strncpy into VLA and
dynamically allocated arrays
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Target Milestone: ---
-stringop-truncation works as expected with statically allocated arrays but
fails to detect the same problem involving dynamically allocated arrays.
$ cat t.c && gcc -O2 -S -Wall t.c
void sink (void*);
void f0 (const char *s)
{
char a[7];
__builtin_strncpy (a, s, sizeof a); // -Wstringop-truncation (good)
sink (a);
}
void f1 (const char *s, unsigned n)
{
if (n > 256)
n = 256;
char a[n];
__builtin_strncpy (a, s, n); // missing warning
sink (a);
}
void f2 (const char *s, unsigned n)
{
if (n > 256)
n = 256;
char *p = __builtin_alloca (n); // missing warning
__builtin_strncpy (p, s, n);
sink (p);
}
void f3 (const char *s, unsigned n)
{
if (n > 256)
n = 256;
char *p = __builtin_malloc (n);
__builtin_strncpy (p, s, n); // missing warning
sink (p);
}
t.c: In function ‘f0’:
t.c:6:3: warning: ‘__builtin_strncpy’ specified bound 7 equals destination size
[-Wstringop-truncation]
__builtin_strncpy (a, s, sizeof a); // -Wstringop-truncation (good)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Thu, 15 Feb 2018 03:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84389
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
CC| |kargl at gcc dot gnu.org
--- Comment #1 from kargl at gcc dot gnu.org ---
(In reply to Vipul Parekh from comment #0)
> Consider the following:
>
> --- begin console output ---
> C:\Temp>type p.f90
> module m
>
> type :: t
> private
If you add
integer i
to work around the issue you reported in different bug report,
and ...
> contains
> private
> procedure, pass(this) :: write_t
> generic, public :: write(formatted) => write_t
> end type
>
> contains
>
> subroutine write_t(this, lun, iotype, vlist, istat, imsg)
>
> ! argument definitions
> class(t), intent(in) :: this
> integer, intent(in) :: lun
> character(len=*), intent(in) :: iotype
> integer, intent(in) :: vlist(:)
> integer, intent(out) :: istat
> character(len=*), intent(inout) :: imsg
>
> write(lun, fmt=*, iostat=istat, iomsg=imsg) "Hello World!"
>
> return
>
> end subroutine write_t
>
> end module
>
> program p
>
> use m, only : t
>
> type(t) :: foo(2)
>
> print "(*(dt:,','))", foo
provide a valid format-item, then gfortran gives
the expected output.
gfcx -o z b.f90 && ./z
Hello World!, Hello World!
The EBNF in F2018 is
R1301 format-stmt is FORMAT format-specification
R1302 format-specification is ( [ format-items ] )
or ( [ format-items, ] unlimited-format-item )
R1305 unlimited-format-item is * ( format-items )
R1303 format-items is format-item [ [ , ] format-item ] ...
R1304 format-item is [ r ] data-edit-desc
or control-edit-desc
R1307 data-edit-desc is I w [ . m ]
...
or DT [ char-literal-constant ][ ( v-list ) ]
R724 char-literal-constant is [ kind-param _ ] ' [ rep-char ] ... '
or [ kind-param _ ] " [ rep-char ] ... "
R1312 v is signed-int-literal-constant
R1313 control-edit-desc is position-edit-desc
or :
You have DT:. The colon is neither a char-literal-constant nor v-list.
If you want the colon to be a control-edit-desc, then you need to
include a format-item for it.
The format string you want is "(*(dt,:','))".
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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/84399] New: [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Thu, 15 Feb 2018 08:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84399
Bug ID: 84399
Summary: [8 Regression] [graphite] ICE in set_codegen_error, at
graphite-isl-ast-to-gimple.c:206
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
scev-max-expr-size once again.
gcc-8.0.0-alpha20180211 snapshot (r257571) ICEs when compiling the following
snippet w/ -O2 -floop-nest-optimize -fno-tree-loop-im --param
scev-max-expr-size=1:
void
h8 (int cv, int od)
{
for (;;)
{
int ih = &od;
if (cv == 0)
while (od < 1)
{
int lq;
for (lq = 0; lq < 3; ++lq)
for (ih = 0; ih < 4; ++ih)
od += lq;
}
while (ih < 1)
{
}
}
}
% gcc-8.0.0-alpha20180211 -O2 -floop-nest-optimize -fno-tree-loop-im --param
scev-max-expr-size=1 -w -c wucxhfnm.c
during GIMPLE pass: graphite
wucxhfnm.c: In function 'h8':
wucxhfnm.c:2:1: internal compiler error: in set_codegen_error, at
graphite-isl-ast-to-gimple.c:206
h8 (int cv, int od)
^~
0x7244e2 translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:205
0x724730 translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/tree.h:3246
0x724730 translate_isl_ast_to_gimple::get_rename_from_scev(tree_node*,
gimple**, loop*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:1102
0x1457d59
translate_isl_ast_to_gimple::graphite_copy_stmts_from_block(basic_block_def*,
basic_block_def*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:1221
0x1458749
translate_isl_ast_to_gimple::copy_bb_and_scalar_dependences(basic_block_def*,
edge_def*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:1270
0x1458ec1
translate_isl_ast_to_gimple::translate_isl_ast_node_user(isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:830
0x1459085 translate_isl_ast_to_gimple::translate_isl_ast_for_loop(loop*,
isl_ast_node*, edge_def*, tree_node*, tree_node*, tree_node*, std::map<isl_id*,
tree_node*, std::less<isl_id*>, std::allocator<std::pair<isl_id* const,
tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:623
0x1459359 translate_isl_ast_to_gimple::translate_isl_ast_node_for(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:751
0x1459584 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:859
0x1459584 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:859
0x1459584 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:859
0x1459085 translate_isl_ast_to_gimple::translate_isl_ast_for_loop(loop*,
isl_ast_node*, edge_def*, tree_node*, tree_node*, tree_node*, std::map<isl_id*,
tree_node*, std::less<isl_id*>, std::allocator<std::pair<isl_id* const,
tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:623
0x1459359 translate_isl_ast_to_gimple::translate_isl_ast_node_for(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:751
0x1459584 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:859
0x145996c graphite_regenerate_ast_isl(scop*)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite-isl-ast-to-gimple.c:1505
0x1455ac3 graphite_transform_loops()
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:413
0x1455fd0 graphite_transforms
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:475
0x1455fd0 execute
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180211/work/gcc-8-20180211/gcc/graphite.c:552
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From: "mihaipop11 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: =?UTF-8?B?W0J1ZyBjKysvODQ0MDBdIE5ldzog4oCcbGludXjigJ0gc3RyaW5nIGluIHBh?= =?UTF-8?B?dGggcmVwbGFjZWQgd2hlbiB1c2luZyDigJw8PuKAnSBhbmdsZSBicmFja2V0?= =?UTF-8?B?cyB0byBpbmNsdWRlIGEgaGVhZGVy?Date: Thu, 15 Feb 2018 08:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84400
Bug ID: 84400
Summary: “linux†string in path replaced when using “<>†angle
brackets to include a header
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mihaipop11 at gmail dot com
Target Milestone: ---
I am using "Ubuntu 16.04.0 LTS" with: gcc version 5.4.0 20160609 (Ubuntu
5.4.0-6ubuntu1~16.04.6), but this problem can be reproduced on later gcc
versions as well, gcc-6 and gcc-7.
Here https://github.com/mihaipop11/gcc-linux you can find a link to a github
repo containing all the sources but i'll also explain this below.
How to reproduce:
We have this nice little program with these files:
// main.cpp
#include <iostream>
#include INCLUDE_FILE
int main()
{
std::cout << "Works this time" << std::endl;
}
and a header file inside a folder, let's say named include, doesn't matter that
is empty, this is only for demonstration purposes.
// include.hpp
//empty header
Overall the structure looks like this:
<dir>
├── main.cpp
└── include
└── include.hpp
Compilation step:
I analysed two cases and the bug appears in the second one.
First case:
The <dir> folder name which holds the files should be named anything but
something that contains the string linux. ex: test-notlinux
Overall the structure looks like this:
test-notlinux
├── main.cpp
└── include
└── include.hpp
Now, cd test-notlinux and try to compile the sources:
g++ "-D INCLUDE_FILE=\"${PWD}/include/include.hpp\"" main.cpp
g++ "-D INCLUDE_FILE=<${PWD}/include/include.hpp>" main.cpp
Result: Both commands work as expected. No issue here.
Second case: The <dir> folder name which holds the files contains the string
linux. ex: test-linux
Overall the structure looks like this:
test-linux
├── main.cpp
└── include
└── include.hpp
Now, cd test-linux and try to compile the sources:
// first command should work
g++ "-D INCLUDE_FILE=\"${PWD}/include/include.hpp\"" main.cpp
// but this ...
g++ "-D INCLUDE_FILE=<${PWD}/include/include.hpp>" main.cpp
Result: The second command apparently replaces the linux string from the dir
name with 1
Output: /tmp/test-1/include/include.hpp: No such file or directory
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQ0MDBdIOKAnGxpbnV44oCdIHN0cmluZyBpbiBwYXRoIHJl?= =?UTF-8?B?cGxhY2VkIHdpdGgg4oCcMeKAnSB3aGVuIHVzaW5nIOKAnDw+4oCdIGFuZ2xl?= =?UTF-8?B?IGJyYWNrZXRzIHRvIGluY2x1ZGUgYSBoZWFkZXIgdGhyb3VnaCBhIG1hY3Jv?Date: Thu, 15 Feb 2018 08:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84400
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
linux is a macro defined to 1. In <> case the macro is expanded while in ""
case, the token is a string.
>From gcc-bugs-return-593419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 08:29:56 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84401] New: Misleading error message when running out of RAM
Date: Thu, 15 Feb 2018 09:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84401
Bug ID: 84401
Summary: Misleading error message when running out of RAM
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sergey.ignatchenko at ithare dot com
Target Milestone: ---
Whenever GCC consumes too much RAM (="the box doesn't have enough RAM to
compile whatever-is-necessary-to-compile"), GCC is likely to be sent SIGKILL;
it leads to an error message along the following lines:
g++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
This message is (a) not really helpful for the developer, and (b) causes quite
a few non-bugs to be submitted (such as
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34882,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36665,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61860 ,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30615 ,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71671 ,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80434 ,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30615, etc. ).
While there is no _guarantee_ that SIGKILL is caused by lack of RAM, this seems
to be the most likely case by far, so simply adjusting the message (just for
SIGKILL) to the following, would improve quality-of-life both for
devs-using-GCC (who will know what they should do right away), and for GCC devs
(who won't need to deal with non-bug reports):
g++: internal compiler error: Killed (program cc1plus)
This error is often caused by lack of RAM on your computer, PLEASE CHECK THAT
YOU DIDN'T RAN OUT OF RAM FIRST.
If it is not the case, please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
>From gcc-bugs-return-593422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 09:46:04 2018
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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|--- |INVALID
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
linux is a predefined macro only when using the GNU extensions, so just compile
with -std=c++{98,11,14,17,2a} or -ansi and it won't be defined (only __linux__,
__linux and __gnu_linux__ will be).
>From gcc-bugs-return-593420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 09:45:38 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/84402] New: [meta] GCC build system: parallelism bottleneck
Date: Thu, 15 Feb 2018 09:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84402
Bug ID: 84402
Summary: [meta] GCC build system: parallelism bottleneck
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
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As discussed yesterday on IRC, current build of GCC has various issues that
make it not fully parallelable on machines with higher number of CPUs.
I've did a hack to make where I recorded timestamp when a target is triggered
and finished:
https://github.com/marxin/make/tree/timestamp
Then I built GCC with -j1 and used following parser to generate reports:
https://github.com/marxin/script-misc/blob/master/parse-make-log.py
I prepared various reports that I'm going to add as attachments.
>From gcc-bugs-return-593421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 09:46:02 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84403] New: Possible further extension of constexpr: allow to use them as template parameters
Date: Thu, 15 Feb 2018 09:46:00 -0000
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Bug ID: 84403
Summary: Possible further extension of constexpr: allow to use
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Product: gcc
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Values in constexpr functions are known at compile time, so theoretically they
could be used as template parameters like in example below. Please consider
proposing this and implementing for some future version of C++ standard.
#include <type_traits>
constexpr int test(int n)
{
return std::integral_constant<int, n>::value;
}
>From gcc-bugs-return-593424-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 09:47:09 2018
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43421
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make all-host -j128 on 128 core EPYC machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43420
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make all-host -j8 on 8 core Haswell machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43423
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wall time report: make (for configure --disable-boostrap) on Haswell machine
(system compiler -O2 -g)
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43422
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make (for configure --disable-boostrap) -j128 on 128 core EPYC machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43425
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wall time report: boostrap stage2 on Haswell machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43424
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43424&action=edit
wall time report: boostrap stage1 on Haswell machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
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wall time report: boostrap stage3 on Haswell machine
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/82939] genmatch fills up terminal with endless printing of periods
Date: Thu, 15 Feb 2018 10:02:00 -0000
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--- Comment #9 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 14 Feb 2018, egallager at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82939
>
> --- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
> (In reply to Eric Gallager from comment #7)
> > It works when I use a previous version of gcc I built myself though. (8.0
> > from 20170525)
>
> Regardless of the fact that I was able to work around this bug, I'm still
> wondering why those periods need to be printed in the first place? Would it
> break anything to just remove that loop?
I suspect so. I don't think the loop is in any way relevant - it just
is the place where the stage1 miscompile manifests?
>From gcc-bugs-return-593431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:02:44 2018
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQ0MDBdIOKAnGxpbnV44oCdIHN0cmluZyBpbiBwYXRoIHJl?= =?UTF-8?B?cGxhY2VkIHdpdGgg4oCcMeKAnSB3aGVuIHVzaW5nIOKAnDw+4oCdIGFuZ2xl?= =?UTF-8?B?IGJyYWNrZXRzIHRvIGluY2x1ZGUgYSBoZWFkZXIgdGhyb3VnaCBhIG1hY3Jv?Date: Thu, 15 Feb 2018 10:08:00 -0000
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--- Comment #3 from mihai pop <mihaipop11 at gmail dot com> ---
This works, great
>From gcc-bugs-return-593432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:08:59 2018
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
Date: Thu, 15 Feb 2018 10:13:00 -0000
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I forgot to note that minimum time threshold is 0.5s for the wall time reports.
>From gcc-bugs-return-593433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:13:32 2018
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Subject: [Bug rtl-optimization/83530] [7/8 Regression] ICE in reset_sched_cycles_in_current_ebb, at sel-sched.c:7150
Date: Thu, 15 Feb 2018 10:17:00 -0000
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--- Comment #11 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
I've made a deeper comparison with what the Haifa does. We diverge because the
loop in reset_sched_cycles only models resource stalls and relies on the
information from the earlier scheduling pass for data stalls. However, there
is no such information in this case as the loop was scheduled with the modulo
scheduler.
I need to think more on how this was supposed to work. (Maybe the issue just
wasn't caught before just because we almost have no testing of modulo sched +
selective scheduler combination. There is a single test of pr42388.) If we
indeed do also need to model data stalls, it is easy to piggyback on the
sel-sched infrastructure in this case to make the scheduling but just to select
the next insn always for the BB_DISABLE_SCHEDULE blocks. I've verified that
such a patch works. Similarly, adding -freschedule-modulo-scheduled-blocks
makes the ICE disappear.
The initial patch that needs to be cleaned up (if the above is correct) is
like:
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index 76092f9587a..fcdc2e7102e 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -5004,12 +5013,14 @@ remove_temp_moveop_nops (bool full_tidying)
distinguishing between bookkeeping copies and original insns. */
static int max_uid_before_move_op = 0;
+static int force_next_insn = 0;
+
/* Remove from AV_VLIW_P all instructions but next when debug counter
tells us so. Next instruction is fetched from BNDS. */
static void
remove_insns_for_debug (blist_t bnds, av_set_t *av_vliw_p)
{
- if (! dbg_cnt (sel_sched_insn_cnt))
+ if (! dbg_cnt (sel_sched_insn_cnt) || force_next_insn)
/* Leave only the next insn in av_vliw. */
{
av_set_iterator av_it;
@@ -7642,7 +7653,13 @@ sel_sched_region (int rgn)
sel_sched_region_1 ();
else
/* Force initialization of INSN_SCHED_CYCLEs for correct bundling. */
- reset_sched_cycles_p = true;
+ {
+ reset_sched_cycles_p = false;
+ pipelining_p = false;
+ force_next_insn = 1;
+ sel_sched_region_1 ();
+ force_next_insn = 0;
+ }
sel_region_finish (reset_sched_cycles_p);
}
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Subject: [Bug preprocessor/82939] genmatch fills up terminal with endless printing of periods
Date: Thu, 15 Feb 2018 10:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note the function shouldn't ever be called since the call is guarded by:
if (set->trace_includes)
trace_include (set, map);
and the linemap should have set->trace_includes set to false. So
it would be interesting to look at (in the failing case) the assembly
of line-map.o:linemap_init which does
void
linemap_init (struct line_maps *set,
source_location builtin_location)
{
*set = line_maps ();
thus default-constructs line_maps and does an aggregate assignment.
Maybe sth goes wrong here and we can work around the bug by providing
a constructor initializing all members instead of relying on value-init.
Just in case you want to investigate some more ;)
Note that on the GCC 7 branch we instead do
linemap_init (struct line_maps *set,
source_location builtin_location)
{
memset (set, 0, sizeof (struct line_maps));
Martin - you changed this to assignment from default-construction. Was there
any good reason to do so?
Quickly checking compilers with the followign testcase shows
struct line_maps {
~line_maps ();
bool trace_includes;
};
void foo (line_maps *m)
{
*m = line_maps ();
}
GCC 4.2.4:
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (*NON_LVALUE_EXPR <m> = *(struct line_maps &) (struct line_maps *)
&TARGET_EXPR <D.2350, {.trace_includes=0}>) >>>
GCC 4.2.3:
;; Function line_maps::line_maps() (_ZN9line_mapsC1Ev *INTERNAL* )
;; enabled by -tree-original
{
}
;; Function void foo(line_maps*) (_Z3fooP9line_maps)
;; enabled by -tree-original
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (*NON_LVALUE_EXPR <m> = *(struct line_maps &) (struct line_maps *)
&TARGET_EXPR <D.2368, <<< Unknown tree: aggr_init_expr
__comp_ctor
0B
D.2368 >>>
>) >>>
>>;
so GCC 4.2.3 doesn't properly value-initialize for this expression (but 4.2.4
does). GCC 4.3.0 looks fine as well, so does 4.1.2 and 4.1.0 but not
4.2.{0,1,2} either.
Not sure what to suggest here but _not_ use unfixed 4.2.{0,1,2,3} as
host-compiler...
I suppose Apple isn't going to fix their GCC 4.2.x based compiler (IIRC
that's even gone for newer OS-X / XCode).
Eric - can you check Apple G++ on the above small testcase?
>From gcc-bugs-return-593435-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:26:42 2018
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Subject: [Bug debug/84404] New: Several "leb128 operand is an undefined symbol" in go testsuite with latest debug improvements
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Bug ID: 84404
Summary: Several "leb128 operand is an undefined symbol" in go
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Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
Target Milestone: ---
Recent debug improvements introduced several build failures in the go testsuite
on alphaev68-linux-gnu:
$ make image/draw/check
/tmp/ccQj1Xoe.s: Assembler messages:
/tmp/ccQj1Xoe.s:83370: Error: leb128 operand is an undefined symbol: $LVU5253
/tmp/ccQj1Xoe.s:83380: Error: leb128 operand is an undefined symbol: $LVU5253
FAIL: image/draw
I have no idea why these symbols are missing, I'll attach the resulting
assembly.
>From gcc-bugs-return-593436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:27:32 2018
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Subject: [Bug preprocessor/82939] genmatch fills up terminal with endless printing of periods
Date: Thu, 15 Feb 2018 10:28:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |documentation
CC| |mikestump at comcast dot net
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'm inclined to WONTFIX this bug given Snow Leopard is out of support, but
maybe darwin people can test the latest OS-X version which still uses GCC as
/usr/bin/g++ if it is affected by this bug? So we can at least document this
issue in install.texi.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Thu, 15 Feb 2018 10:31:00 -0000
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--- Comment #52 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Jonathan,
Would the patch in comment 42 be acceptable? I'm suggesting it as an interim
fix, limited to the known affected build triplets while get somehow get Apple
to fix the APFS issue, so that GCC builds out of the box for macOS users. I
confirm that it fixes the problem on darwin.
Index: configure.ac
===================================================================
--- configure.ac (revision 257657)
+++ configure.ac (working copy)
@@ -473,6 +473,12 @@ AM_CONDITIONAL(BUILD_PDF,
test $ac_cv_prog_DBLATEX = "yes" &&
test $ac_cv_prog_PDFLATEX = "yes")
+case "$build" in
+ *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;;
+ * ) glibcxx_include_dir_notparallel=no ;;
+esac
+AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL,
+ test $glibcxx_include_dir_notparallel = "yes")
# Propagate the target-specific source directories through the build chain.
ATOMICITY_SRCDIR=config/${atomicity_dir}
Index: include/Makefile.am
===================================================================
--- include/Makefile.am (revision 257657)
+++ include/Makefile.am (working copy)
@@ -1479,3 +1479,7 @@ $(decimal_headers): ; @:
$(ext_headers): ; @:
$(experimental_headers): ; @:
$(experimental_bits_headers): ; @:
+if INCLUDE_DIR_NOTPARALLEL
+# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
+.NOTPARALLEL:
+endif
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Subject: [Bug debug/84404] Several "leb128 operand is an undefined symbol" in go testsuite with latest debug improvements
Date: Thu, 15 Feb 2018 10:34:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 43427
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43427&action=edit
generated assembly
>From gcc-bugs-return-593439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:34:18 2018
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Subject: [Bug debug/84404] Several "leb128 operand is an undefined symbol" in go testsuite with latest debug improvements
Date: Thu, 15 Feb 2018 10:56:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |alphaev68-linux-gnu
CC| |aoliva at gcc dot gnu.org
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
$ ~/gcc-build/gcc/xgcc --version
xgcc (GCC) 8.0.1 20180214 (experimental) [trunk revision 257656]
$ as --version
GNU assembler (Gentoo 2.30 p1) 2.30.0
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 `alpha-unknown-linux-gnu'.
>From gcc-bugs-return-593440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 10:56:22 2018
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
Date: Thu, 15 Feb 2018 11:04:00 -0000
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the following restores genmatch functionality for me with using GCC 4.2.3 as
host compiler
Index: libcpp/line-map.c
===================================================================
--- libcpp/line-map.c (revision 257682)
+++ libcpp/line-map.c (working copy)
@@ -344,7 +344,12 @@ void
linemap_init (struct line_maps *set,
source_location builtin_location)
{
+#if __GNUC_MAJOR__ == 4 && __GNUC_MINOR__ == 2
+ /* PR33916. */
+ memset (set, 0, sizeof (struct line_maps));
+#else
*set = line_maps ();
+#endif
set->highest_location = RESERVED_LOCATION_COUNT - 1;
set->highest_line = RESERVED_LOCATION_COUNT - 1;
set->location_adhoc_data_map.htab =
but we then hang in hash_table<hash_map<edge_def*, auto_vec<edge_var_map, 0ul>,
simple_hashmap_traits<default_hash_traits<edge_def*>, auto_vec<edge_var_map,
0ul> > >::hash_entry, xcallocator>::find_with_hash via
redirect_edge_var_map_clear when
doing libgcc configure tests...
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Unreliable testcase ("works" for me at -O2 but not -O0 -- we need the
default-constructed assignment RHS on the stack to have an uninitialized value
of non-zero):
struct line_maps {
~line_maps ();
bool trace_includes;
};
line_maps::~line_maps () {}
int main ()
{
line_maps m;
m.trace_includes = true;
m = line_maps ();
if (m.trace_includes)
return 1;
return 0;
}
at -O2 gcc 4.2.3 optimizes this to just
main:
.LFB5:
movzbl %al, %eax
ret
...
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
The following testcase from Jakub seems to work reliably at -O{0,1,2}:
extern "C" void abort ();
struct S { ~S () { if (x) abort (); }; int x, y, z; };
void foo (S *p) { *p = S (); }
int main () { S s; s.x = 1; s.y = 2; s.z = 3; foo (&s); if (s.x != 0 || s.y !=
0 || s.z != 0) abort (); }
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Subject: [Bug tree-optimization/84334] [8 Regression] Stack overflow with -Ofast -frounding-math
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 15 11:17:05 2018
New Revision: 257683
URL: https://gcc.gnu.org/viewcvs?rev=257683&root=gcc&view=rev
Log:
PR tree-optimization/84334
* match.pd ((A +- CST1) +- CST2 -> A + CST3): If A is
also a CONSTANT_CLASS_P, punt.
* gcc.dg/pr84334.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr84334.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-593444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 11:19:24 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
Date: Thu, 15 Feb 2018 11:23:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 15 11:18:47 2018
New Revision: 257684
URL: https://gcc.gnu.org/viewcvs?rev=257684&root=gcc&view=rev
Log:
PR tree-optimization/84383
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Don't look at
dstoff nor call operand_equal_p if dstbase is NULL.
* gcc.c-torture/compile/pr84383.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr84383.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQ0MDBdIOKAnGxpbnV44oCdIHN0cmluZyBpbiBwYXRoIHJl?= =?UTF-8?B?cGxhY2VkIHdpdGgg4oCcMeKAnSB3aGVuIHVzaW5nIOKAnDw+4oCdIGFuZ2xl?= =?UTF-8?B?IGJyYWNrZXRzIHRvIGluY2x1ZGUgYSBoZWFkZXIgdGhyb3VnaCBhIG1hY3Jv?Date: Thu, 15 Feb 2018 11:24:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You can also just use the "" version instead of <>. Since you're using an
absolute path it makes no difference anyway, the same file will always be
included.
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
Date: Thu, 15 Feb 2018 11:26:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Full testcase suitable for configure:
extern "C" void abort ();
struct S { ~S () { if (x) abort (); }; int x, y, z; };
void foo (S *p) { *p = S (); }
int main () { S s; s.x = 1; s.y = 2; s.z = 3; foo (&s); if (s.x != 0 || s.y !=
0 || s.z != 0) abort (); }
Given how many places r249234 changed, adding workarounds for the PR33916 GCC
4.2.[0-3] bug might be too pervasive. All 4.2.* compilers from 20061017 to
20080212 are likely broken, unless patched.
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Subject: [Bug tree-optimization/84334] [8 Regression] Stack overflow with -Ofast -frounding-math
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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.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #53 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes limiting it to darwin is OK, I'll make that change.
>From gcc-bugs-return-593449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 11:29:34 2018
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Subject: [Bug tree-optimization/84383] [8 Regression] ICE in maybe_diag_stxncpy_trunc
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-593450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 11:33:06 2018
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Subject: [Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 15 11:32:27 2018
New Revision: 257685
URL: https://gcc.gnu.org/viewcvs?rev=257685&root=gcc&view=rev
Log:
PR other/82368
* elf.c (SHT_PROGBITS): Undefine and define.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/elf.c
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Subject: [Bug bootstrap/84405] New: [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
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Bug ID: 84405
Summary: [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC
4.2.4
Product: gcc
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Target: x86_64-*-*
When bootstrapping with GCC 4.1.2 and 4.2.4 host compilers we hang during
configure of libgcc.
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |82939
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There's a related bootstrap failure with GCC 4.2.{0,1,2,3} which has been
tracked down.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82939
[Bug 82939] genmatch fills up terminal with endless printing of periods
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/84190] [7/8 Regression] double arithmetic on x86 no longer rounds to nearest
Date: Thu, 15 Feb 2018 11:48:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For the required part I guess we need Joseph's input, though even if it might
not be technically required, I thought that for volatile our general approach
has been "be conservative when you see volatile".
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Subject: [Bug preprocessor/83063] [8 Regression] ICE on an invalid preprocessor snippet
Date: Thu, 15 Feb 2018 11:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|tromey at gcc dot gnu.org |jason at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Jason has a patch.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 12:14:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64-*-* |x86_64-linux-gnu
Known to work| |4.3.6
Known to fail| |3.4.6, 4.1.2, 4.2.4
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note 3.4.6 I tested was a compiler for i?86-linux. The hang is when compiling
the following unreduced configure test from libgcc:
/* confdefs.h */
#define PACKAGE_NAME "GNU C Runtime Library"
#define PACKAGE_TARNAME "libgcc"
#define PACKAGE_VERSION "1.0"
#define PACKAGE_STRING "GNU C Runtime Library 1.0"
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL "http://www.gnu.org/software/libgcc/"
/* end confdefs.h. */
#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
static char *e (p, i)
char **p;
int i;
{
return p[i];
}
static char *f (char * (*g) (char **, int), char **p, ...)
{
char *s;
va_list v;
va_start (v,p);
s = g (p, va_arg (v,int));
va_end (v);
return s;
}
/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has
function prototypes and stuff, but not '\xHH' hex character constants.
These don't provoke an error unfortunately, instead are silently treated
as 'x'. The following induces an error, until -std is added to get
proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an
array size at least. It's necessary to write '\x00'==0 to get something
that's true only with -std. */
int osf4_cc_array ['\x00' == 0 ? 1 : -1];
/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
inside strings and character constants. */
#define FOO(x) 'x'
int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
int test (int i, double x);
struct s1 {int (*f) (int a);};
struct s2 {int (*f) (double a);};
int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int,
int);
int argc;
char **argv;
int
main ()
{
return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
;
return 0;
}
Backtrace is
#0 0x08e48e57 in hash_map<edge_def*, auto_vec<edge_var_map, 0u>,
simple_hashmap_traits<default_hash_traits<edge_def*>, auto_vec<edge_var_map,
0u> > >::hash_entry::equal (a=..., b=@0xfffd4590: <edge 0xf71cdce0 (ENTRY ->
2)>)
at /tmp/trunk/gcc/hash-map.h:44
#1 0x08e4828c in hash_table<hash_map<edge_def*, auto_vec<edge_var_map, 0u>,
simple_hashmap_traits<default_hash_traits<edge_def*>, auto_vec<edge_var_map,
0u> > >::hash_entry, xcallocator>::find_with_hash (this=0xb656a40,
comparable=@0xfffd4590: <edge 0xf71cdce0 (ENTRY -> 2)>, hash=4276329372)
at /tmp/trunk/gcc/hash-table.h:858
#2 0x08e4784f in hash_map<edge_def*, auto_vec<edge_var_map, 0u>,
simple_hashmap_traits<default_hash_traits<edge_def*>, auto_vec<edge_var_map,
0u> > >::get (
this=0xb656a40, k=@0xfffd4590: <edge 0xf71cdce0 (ENTRY -> 2)>)
at /tmp/trunk/gcc/hash-map.h:161
#3 0x08e3caf7 in redirect_edge_var_map_clear (
e=<edge 0xf71cdce0 (ENTRY -> 2)>) at /tmp/trunk/gcc/tree-ssa.c:79
#4 0x08e3cbeb in ssa_redirect_edge (e=<edge 0xf71cdce0 (ENTRY -> 2)>,
dest=<basic_block 0xf710c8e8 (3)>) at /tmp/trunk/gcc/tree-ssa.c:145
#5 0x08be9bf5 in gimple_redirect_edge_and_branch (
e=<edge 0xf71cdce0 (ENTRY -> 2)>, dest=<basic_block 0xf710c8e8 (3)>)
at /tmp/trunk/gcc/tree-cfg.c:6163
#6 0x085df140 in redirect_edge_and_branch (e=<edge 0xf71cdce0 (ENTRY -> 2)>,
dest=<basic_block 0xf710c8e8 (3)>) at /tmp/trunk/gcc/cfghooks.c:369
#7 0x08bde392 in gimple_split_edge (edge_in=<edge 0xf71cdce0 (ENTRY -> 2)>)
at /tmp/trunk/gcc/tree-cfg.c:2969
#8 0x085dfab1 in split_edge (e=<edge 0xf71cdce0 (ENTRY -> 2)>)
at /tmp/trunk/gcc/cfghooks.c:648
#9 0x08c46208 in tree_function_versioning (old_decl=
<function_decl 0xf7236800 f>,
new_decl=<function_decl 0xf7241680 f.constprop>,
tree_map=0xf7244420 = {...}, update_clones=true, args_to_skip=0x0,
skip_return=false, blocks_to_copy=0x0, new_entry=<basic_block 0x0>)
at /tmp/trunk/gcc/tree-inline.c:6055
#10 0x08621d7d in cgraph_materialize_clone (
node=<cgraph_node* 0xf71d0424 "f.constprop">)
at /tmp/trunk/gcc/cgraphclones.c:1024
#11 0x08622194 in symbol_table::materialize_all_clones (this=0xf71020c8)
at /tmp/trunk/gcc/cgraphclones.c:1125
#12 0x0891eacb in (anonymous namespace)::pass_materialize_all_clones::execute (
this=0xb5f47f8) at /tmp/trunk/gcc/ipa.c:1429
#13 0x08a6f3a7 in execute_one_pass (
pass=<opt_pass* 0xb5f47f8 "materialize-all-clones"(90)>)
at /tmp/trunk/gcc/passes.c:2497
#14 0x08a70419 in execute_ipa_pass_list (
pass=<opt_pass* 0xb5f47f8 "materialize-all-clones"(90)>)
at /tmp/trunk/gcc/passes.c:2932
#15 0x0861d030 in symbol_table::compile (this=0xf71020c8)
at /tmp/trunk/gcc/cgraphunit.c:2589
#16 0x0861d25f in symbol_table::finalize_compilation_unit (this=0xf71020c8)
at /tmp/trunk/gcc/cgraphunit.c:2717
#17 0x08b90f17 in compile_file () at /tmp/trunk/gcc/toplev.c:480
#18 0x08b936ce in do_compile () at /tmp/trunk/gcc/toplev.c:2097
#19 0x08b93a28 in toplev::main (this=0xfffd4ab0, argc=24, argv=0xfffd4b64)
at /tmp/trunk/gcc/toplev.c:2232
#20 0x097f0e21 in main (argc=24, argv=0xfffd4b64) at /tmp/trunk/gcc/main.c:39
and it doesn't finish frame #1
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83789] __builtin_altivec_lvx fails for powerpc for altivec-4.c
Date: Thu, 15 Feb 2018 12:21:00 -0000
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--- Comment #12 from Kaushikp <kaushik.phatak at kpitcummins dot com> ---
>> we're getting duplicate named patterns.
Yes, it does generate multiple patters for the concerned built-ins causing
toolchain build failure.
I think it's trying to force the same pattern for 32-bit which exist for 64-bit
causing redefinition error.
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From: "jozefl.gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84406] New: [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 12:23:00 -0000
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Bug ID: 84406
Summary: [8 Regression][MSP430] ICE on valid code in
find_widening_optab_handler_and_mode, at
optabs-query.c:476
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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Reporter: jozefl.gcc at gmail dot com
Target Milestone: ---
Trunk currently fails to build for the msp430-elf target due to an ICE.
A reduced testcase is below.
# 1 "testcase.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "testcase.c"
void a (void) {
__int20 a, b;
__int20 c = a * b;
}
$ ./gcc/xgcc -B./gcc/ -S testcase.i
during RTL pass: expand
testcase.c: In function 'a':
testcase.c:3:11: internal compiler error: in
find_widening_optab_handler_and_mode, at optabs-query.c:476
__int20 c = a * b;
^
0xaaa5cc find_widening_optab_handler_and_mode(optab_tag, machine_mode,
machine_mode, machine_mode*)
../../gcc/optabs-query.c:476
0xa9f399 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
../../gcc/optabs.c:1290
0x8355fd expand_mult(machine_mode, rtx_def*, rtx_def*, rtx_def*, int, bool)
../../gcc/expmed.c:3536
0x85b492 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/expr.c:8946
0x726b49 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3730
0x726b49 expand_gimple_stmt
../../gcc/cfgexpand.c:3790
0x72881b expand_gimple_basic_block
../../gcc/cfgexpand.c:5819
0x72e196 execute
../../gcc/cfgexpand.c:6425
Started with:
commit d2a1b4530f1d00fb35c2aee051b00398a624bd27
Author: rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Nov 1 12:30:39 2017 +0000
Widening optab cleanup
...
The ICE appears to be caused by the fact there is no widening multiply insn for
PSImode currently implemented for msp430, which is what
find_widening_optab_handler_and_mode is searching for.
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Subject: [Bug target/79242] [7 Regression] ICE in simplify_subreg, at simplify-rtx.c:6029
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--- Comment #11 from Jozef Lawrynowicz <jozefl.gcc at gmail dot com> ---
(In reply to Eric Gallager from comment #10)
> (In reply to Jeffrey A. Law from comment #9)
> > Author: law
> > Date: Wed Feb 14 07:21:11 2018
> > New Revision: 257653
> >
> > URL: https://gcc.gnu.org/viewcvs?rev=257653&root=gcc&view=rev
> > Log:
> > 2018-02-14 Jozef Lawrynowicz <jozefl.gcc@gmail.com>
> >
> > PR target/79242
> > * machmode.def: Define a complex mode for PARTIAL_INT.
> > * genmodes.c (complex_class): Return MODE_COMPLEX_INT for
> > MODE_PARTIAL_INT.
> > * doc/rtl.texi: Document CSPImode.
> > * config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
> > handling.
> > (msp430_hard_regno_nregs_with_padding): Likewise.
> >
> > PR target/79242
> > * gcc.target/msp430/pr79242.c: New test.
> >
> > Added:
> > trunk/gcc/testsuite/gcc.target/msp430/pr79242.c
> > Modified:
> > trunk/gcc/ChangeLog
> > trunk/gcc/config/msp430/msp430.c
> > trunk/gcc/doc/rtl.texi
> > trunk/gcc/genmodes.c
> > trunk/gcc/machmode.def
> > trunk/gcc/testsuite/ChangeLog
>
> Did this fix it?
The patch is currently only on trunk, but after back-porting it to
gcc-7-branch, GCC now builds successfully for the msp430-elf target.
The original testcase also compiles successfully with the resulting toolchain.
Trunk still doesn't build for msp430-elf though, due to Bug 84406.
>From gcc-bugs-return-593459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 12:34:58 2018
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Subject: [Bug c++/83990] [7 Regression] Spurious "potential null pointer dereference" warning regression from 7.1 onwards
Date: Thu, 15 Feb 2018 12:54:00 -0000
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--- Comment #17 from Tony E Lewis <TonyELewis at hotmail dot com> ---
I confirm that I'm seeing this as fixed on GCC trunk on Godbolt. Thanks very
much to all involved in getting this sorted quickly.
>From gcc-bugs-return-593460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 12:56:13 2018
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Thu, 15 Feb 2018 13:17:00 -0000
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--- Comment #54 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Thanks! Given that it affects bootstrap, maybe I ask that it be included in all
active branches?
>From gcc-bugs-return-593461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 13:17:33 2018
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43428
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43428&action=edit
Parallel build of make all-host on 8 core Haswell machine
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Subject: [Bug target/84392] test case gcc.dg/graphite/uns-interchange-9.c and 3 others fail on power9
Date: Thu, 15 Feb 2018 13:40:00 -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
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
which ISL version are you using? Anything older than 0.18 is known to cause
some of those fails.
>From gcc-bugs-return-593463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 13:40:53 2018
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Subject: [Bug tree-optimization/84399] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Thu, 15 Feb 2018 13:41:00 -0000
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I have a patch. We are failing to properly verify SCEV analyses we rely on
later.
>From gcc-bugs-return-593464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 13:41:08 2018
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From: "mikulas at artax dot karlin.mff.cuni.cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84407] New: incorrect constant propagation with -frounding-math
Date: Thu, 15 Feb 2018 13:56:00 -0000
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Bug ID: 84407
Summary: incorrect constant propagation with -frounding-math
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
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With -frounding-math, gcc should not do optimizations if the result is affected
by the rounding mode. But it still does some of them - it propagates constants
across integer-to-float conversions, despite the fact that these conversions
are affected by the rounding mode.
When this program is compiled with -O2 -frounding-math (on x86-64 linux), you
get:
7fffffffffffffff -> 8000000000000000
7fffffffffffffff -> 8000000000000000
7fffffffffffffff -> 8000000000000000
7fffffffffffffff -> 8000000000000000
With -O0 -frounding-math, you get:
7fffffffffffffff -> 8000000000000000
7fffffffffffffff -> 7ffffffffffffc00
7fffffffffffffff -> 8000000000000000
7fffffffffffffff -> 7ffffffffffffc00
#include <stdio.h>
#include <inttypes.h>
#include <fenv.h>
void print_val(uint64_t x)
{
printf("%016"PRIx64"", x);
}
static void cnv_print(uint64_t x)
{
double f = x;
uint64_t y = f;
print_val(x);
printf(" -> ");
print_val(y);
printf("\n");
}
int main(void)
{
fesetround(FE_TONEAREST);
cnv_print(0x7fffffffffffffff);
fesetround(FE_DOWNWARD);
cnv_print(0x7fffffffffffffff);
fesetround(FE_UPWARD);
cnv_print(0x7fffffffffffffff);
fesetround(FE_TOWARDZERO);
cnv_print(0x7fffffffffffffff);
return 0;
}
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 14:00:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target| |msp430-elf
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Subject: [Bug tree-optimization/84407] incorrect constant propagation with -frounding-math
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
Ever confirmed|0 |1
Known to fail| |4.8.5, 7.3.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. At -O2 it is IPA-CP and with forcing inlining of cnv_print that
isn't necessary, the folding happens during inlining then.
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Subject: [Bug fortran/84386] Implicitly declared variables in BLOCK have scope of including program unit
Date: Thu, 15 Feb 2018 14:19:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
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Subject: [Bug target/78804] [RX] -m64bit-doubles does not work
Date: Thu, 15 Feb 2018 14:27:00 -0000
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--- Comment #16 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I've been using the patch from attachment 41982 in production for RX for a
while and haven't had any issues so far.
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Subject: [Bug debug/83758] ICE building gccgo on powerpc64le --with-cpu=power8
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--- Comment #35 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Thu Feb 15 14:26:46 2018
New Revision: 257690
URL: https://gcc.gnu.org/viewcvs?rev=257690&root=gcc&view=rev
Log:
Fix my changelog entry for PR target/83758
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug fortran/84394] [7/8 Regression] compiler error when using modules with derived types in block data subprograms
Date: Thu, 15 Feb 2018 14:34:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.4.0
Summary|compiler error when using |[7/8 Regression] compiler
|modules with derived types |error when using modules
|in block data subprograms |with derived types in block
| |data subprograms
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
AFAICT the regression seems to be caused (exposed) by r255202.
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Subject: [Bug c++/84330] [6/7/8 Regression] [concepts] ICE with broken constraint
Date: Thu, 15 Feb 2018 14:49:00 -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 #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
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Subject: [Bug debug/83758] ICE building gccgo on powerpc64le --with-cpu=power8
Date: Thu, 15 Feb 2018 14:50:00 -0000
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--- Comment #36 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Thu Feb 15 14:48:15 2018
New Revision: 257691
URL: https://gcc.gnu.org/viewcvs?rev=257691&root=gcc&view=rev
Log:
2018-02-15 Aaron Sawdey <acsawdey@linux.vnet.ibm.com>
Back port from mainline
2018-01-30 Aaron Sawdey <acsawdey@linux.vnet.ibm.com>
PR target/83758
* config/rs6000/rs6000.c (rs6000_internal_arg_pointer): Only return
a reg rtx.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.c
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Subject: [Bug testsuite/84388] test case gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c fails for gcc 7 on power9
Date: Thu, 15 Feb 2018 14:52:00 -0000
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--- Comment #1 from Will Schmidt <willschm at gcc dot gnu.org> ---
Author: willschm
Date: Thu Feb 15 14:50:15 2018
New Revision: 257692
URL: https://gcc.gnu.org/viewcvs?rev=257692&root=gcc&view=rev
Log:
[testsuite]
2018-02-15 Will Schmidt <will_schmidt@vnet.ibm.com>
PR target/84388
* gcc.target/powerpc/fold-vec-mult-int128-p8.c: Update dg-options
and scan-assembler stanzas.
* gcc.target/powerpc/fold-vec-mult-int128-p9.c: Same.
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p8.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c
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Subject: [Bug web/82686] Debian sid powerpc64-unknown-linux-gnu 4.13.0-1-powerpc64 bootstrap breaks in stage3 with unexpected requirement for bdw-gc
Date: Thu, 15 Feb 2018 15:01:00 -0000
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--- Comment #9 from Stefan <kdevel at vogtner dot de> ---
(In reply to Jonathan Wakely from comment #7)
> (In reply to Dennis Clarke from comment #6)
> > Actually first thing I did was remove a few options from configure stage
> > such that I could at least get past this small bump in the road :
> >
> > --enable-multiarch and --enable-multilib removed.
> >
> >
> > Configure went fine and the bootstrap went past the previous gc bump and then
>
> Which confirms you needed the 32-bit gc packages.
For years I am building each and every new GCC with languages
ada,c,c++,fortran,go,java,objc,obj-c++
Okay, Java is gone so I compile GCC 7.3.0 with
langs=ada,c,c++,fortran,go,objc,obj-c++
[prefix]/configure --prefix=$inst \
--enable-objc-gc \
--enable-languages=$langs
make bootstrap
Never had I to supply any binary libgc. Instead I moved the source dir of the
garbage collector into GCC's source directory:
tar xfz $src/gc-7.1.tar.gz
mv gc-7.1 gc
This no longer works since GCC 7. I get:
checking for sched.h... yes
checking whether the target supports thread-local storage... yes
checking if the type of bitfields matters... yes
checking for bdw garbage collector... checking for system boehm-gc...
configure: error: system bdw-gc required but not found
make[1]: *** [configure-target-libobjc] Fehler 1
make[1]: Leaving directory `/scratch/mockbuild1/bld-7.3.0/gcc-objdir'
make: *** [all] Fehler 2
This is Linux x86_64 GNU/Linux (Centos 6.9). How do I prompt GCC to compile the
Boehm GC?
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Subject: [Bug target/84220] rs6000 builtin __builtin_vec_sld() ICEs on invalid 3rd argument
Date: Thu, 15 Feb 2018 15:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84220
Will Schmidt <willschm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Will Schmidt <willschm at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-593476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:02:26 2018
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Subject: [Bug testsuite/84388] test case gcc/testsuite/gcc.target/powerpc/fold-vec-mult-int128-p9.c fails for gcc 7 on power9
Date: Thu, 15 Feb 2018 15:15:00 -0000
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Will Schmidt <willschm at gcc dot gnu.org> changed:
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--- Comment #2 from Will Schmidt <willschm at gcc dot gnu.org> ---
Fixed on gcc-7 branch.
>From gcc-bugs-return-593477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:15:48 2018
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Subject: [Bug c++/84192] [7/8 Regression] ICE with statement expression
Date: Thu, 15 Feb 2018 15:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84192
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43429
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43429&action=edit
gcc8-pr84192.patch
Untested fix.
>From gcc-bugs-return-593478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:19:44 2018
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/84408] New: [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
Date: Thu, 15 Feb 2018 15:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84408
Bug ID: 84408
Summary: [8 regression] gcc.dg/plugin/poly-int-07_plugin.c
compilation times out with -g
Product: gcc
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i think it's since r257631 that assembler time went from 1s to 50s on
aarch64-linux-gnu, this seems a bit excessive for default -g behaviour, so
either less .loc directives should be emitted or as should be optimized to deal
with it.
(i don't think poly-int-07_plugin.c is very special)
starting from a preprocessed poly-int-07_plugin.ii:
-O -g:
$ ./xg++ -B. -g -O -fPIC -shared -fno-rtti -time poly-int-07_plugin.ii
# cc1plus 37.16 0.58
# as 50.89 0.30
# collect2 0.23 0.04
$ ./xg++ -B. -g -O -fPIC -shared -fno-rtti -S -o - poly-int-07_plugin.ii |wc -l
1884187
$ size -A a.out |grep debug
.debug_aranges 1504 0
.debug_info 3225386 0
.debug_abbrev 4236 0
.debug_line 576871 0
.debug_str 291657 0
.debug_loc 1690436 0
.debug_ranges 317184 0
-O -g -gno-inline-points:
$ ./xg++ -B. -g -gno-inline-points -O -fPIC -shared -fno-rtti -time
poly-int-07_plugin.ii
# cc1plus 33.99 0.48
# as 1.11 0.07
# collect2 0.16 0.03
$ ./xg++ -B. -g -gno-inline-points -O -fPIC -shared -fno-rtti -S -o -
poly-int-07_plugin.ii |wc -l
610435
$ size -A a.out |grep debug
.debug_aranges 1504 0
.debug_info 704560 0
.debug_abbrev 4017 0
.debug_line 142083 0
.debug_str 291676 0
.debug_loc 557516 0
.debug_ranges 98896 0
>From gcc-bugs-return-593479-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:40:07 2018
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 15:52:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Tried to bisect this, but it doesn't lead anywhere. r80000 fails to compile
it, just because I haven't tried to tweak the 3.4.6 preprocessed *.ii file
enough (e.g. offsetof), r90000 through r113198 compile it, but it hangs at
runtime,
r113199 ICEs on it in C++ FE, r113250 ICEs on it in the gimplifier, r113500
errors on it:
../../gcc/poly-int.h:172: error: incomplete type ‘wi::int_traits<short unsigned
int:10>’ used in nested name specifier
../../gcc/tree-ssa.c: In function ‘void maybe_rewrite_mem_ref_base(tree_node**,
bitmap_head*)’:
../../gcc/tree-ssa.c:1388: error: no match for ‘operator==’ in
‘wi::to_offset(((const tree_node*)tree_class_check(contains_struct_check((*
tp), TS_TYPED, ((const char*)"../../gcc/tree-ssa.c"), 1387, ((const char*)(&
__FUNCTION__)))->tree_node::typed.tree_typed::type, tcc_type, ((const
char*)"../../gcc/tree-ssa.c"), 1387, ((const char*)(&
__FUNCTION__)))->tree_node::type_common.tree_type_common::size)) ==
tree_class_check(contains_struct_check((* tp), TS_TYPED, ((const
char*)"../../gcc/tree-ssa.c"), 1388, ((const char*)(&
__FUNCTION__)))->tree_node::typed.tree_typed::type, tcc_type, ((const
char*)"../../gcc/tree-ssa.c"), 1388, ((const char*)(&
__FUNCTION__)))->tree_node::type_common.tree_type_common::precision’
../../gcc/tree-ssa.c: In function ‘tree_node*
non_rewritable_mem_ref_base(tree_node*)’:
../../gcc/tree-ssa.c:1457: error: no match for ‘operator==’ in
‘wi::to_offset(((const tree_node*)tree_class_check(contains_struct_check(base,
TS_TYPED, ((const char*)"../../gcc/tree-ssa.c"), 1456, ((const char*)(&
__FUNCTION__)))->tree_node::typed.tree_typed::type, tcc_type, ((const
char*)"../../gcc/tree-ssa.c"), 1456, ((const char*)(&
__FUNCTION__)))->tree_node::type_common.tree_type_common::size)) ==
tree_class_check(contains_struct_check(base, TS_TYPED, ((const
char*)"../../gcc/tree-ssa.c"), 1457, ((const char*)(&
__FUNCTION__)))->tree_node::typed.tree_typed::type, tcc_type, ((const
char*)"../../gcc/tree-ssa.c"), 1457, ((const char*)(&
__FUNCTION__)))->tree_node::type_common.tree_type_common::precision’
and so does up to r117833, r117834 is the first one with the bad value
initialization, fixed only in r132088, which is the first one that actually
works.
>From gcc-bugs-return-593480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:52:34 2018
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Subject: [Bug tree-optimization/83043] [8 Regression] FAIL: libgomp.graphite/force-parallel-1.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
Date: Thu, 15 Feb 2018 15:55:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This is just graphite, shouldn't it be P4?
>From gcc-bugs-return-593481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:55:04 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/84190] [7/8 Regression] double arithmetic on x86 no longer rounds to nearest
Date: Thu, 15 Feb 2018 15:58:00 -0000
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--- Comment #11 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
It's not technically required (at least for this issue and as regards C
standards conformance) simply because options such as -std=c99 / -std=c11
imply -fexcess-precision=standard, so meaning it doesn't make any visible
difference whether those accesses are treated as volatile or not.
It may still make sense to treat these as volatile accesses (and so force
the values to memory, in such a case of a local variable being accessed
through a pointer-to-volatile), to accord with user expectations when
using volatile.
>From gcc-bugs-return-593482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 15:58:49 2018
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Subject: [Bug tree-optimization/84407] incorrect constant propagation with -frounding-math
Date: Thu, 15 Feb 2018 16:01:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Cf. bug 57245 (a similar bug for truncation from wider floating-point
types).
>From gcc-bugs-return-593483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:01:48 2018
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From: "hubicka at ucw dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/83043] [8 Regression] FAIL: libgomp.graphite/force-parallel-1.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
Date: Thu, 15 Feb 2018 16:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83043
--- Comment #9 from Jan Hubicka <hubicka at ucw dot cz> ---
> This is just graphite, shouldn't it be P4?
I would say so. Indeed it is most probably some loop becoming cold and thus
quite harmless bug. I will look into it.
>From gcc-bugs-return-593484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:20:35 2018
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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/84409] New: [F03] check DTIO arguments for character len
Date: Thu, 15 Feb 2018 16:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84409
Bug ID: 84409
Summary: [F03] check DTIO arguments for character len
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: janus at gcc dot gnu.org
Target Milestone: ---
https://github.com/nncarlson/gfortran.dg/issues/17
dtio_22.f90 is invalid, which is not detected.
>From gcc-bugs-return-593485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:27:39 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84409] [F03] check DTIO arguments for character len
Date: Thu, 15 Feb 2018 16:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84409
janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-15
Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
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--- Comment #1 from janus at gcc dot gnu.org ---
Draft patch:
Index: gcc/fortran/interface.c
===================================================================
--- gcc/fortran/interface.c (revision 257682)
+++ gcc/fortran/interface.c (working copy)
@@ -4702,6 +4702,10 @@ check_dtio_arg_TKR_intent (gfc_symbol *fsym, bool
gfc_error ("DTIO dummy argument at %L must be an "
"ASSUMED SHAPE ARRAY", &fsym->declared_at);
+ if (type == BT_CHARACTER && fsym->ts.u.cl->length != NULL)
+ gfc_error ("DTIO character argument at %L must have assumed length",
+ &fsym->declared_at);
+
if (fsym->attr.intent != intent)
gfc_error ("DTIO dummy argument at %L must have INTENT %s",
&fsym->declared_at, gfc_code2string (intents, (int)intent));
>From gcc-bugs-return-593486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:29:03 2018
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Subject: [Bug target/84392] test case gcc.dg/graphite/uns-interchange-9.c and 3 others fail on power9
Date: Thu, 15 Feb 2018 16:31:00 -0000
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seurer at gcc dot gnu.org changed:
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--- Comment #2 from seurer at gcc dot gnu.org ---
That could be it. I started the tester over with a complete refresh of the
source and haven't seen the failures since.
>From gcc-bugs-return-593487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:31:41 2018
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 16:32:00 -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,
| |rsandifo at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The find_widening_optab_handler_and_mode change is clearly wrong for partial
modes. While wider modes for MODE_INT modes should be MODE_INT too, for
MODE_PARTIAL_INT modes GET_MODE_WIDER_MODE is the associated MODE_INT mode.
>From gcc-bugs-return-593488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:32:20 2018
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 16:35:00 -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> ---
Created attachment 43430
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43430&action=edit
gcc8-pr84406.patch
Untested fix.
>From gcc-bugs-return-593489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:35:07 2018
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Subject: [Bug target/83915] FAIL: gcc.target/aarch64/sve/extract_1.c -march=armv8.2-a+sve (internal compiler error)
Date: Thu, 15 Feb 2018 16:39:00 -0000
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nsz at gcc dot gnu.org changed:
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--- Comment #2 from nsz at gcc dot gnu.org ---
i don't see ICEs any more.
>From gcc-bugs-return-593490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:39:49 2018
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From: "jens4303 at me dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Thu, 15 Feb 2018 16:41:00 -0000
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--- Comment #55 from Jens-S. Vöckler <jens4303 at me dot com> ---
Would it be worthwhile to limit it to "darwin" *and* "apfs" on objdir? I am
thinking of something along the lines of
diskutil info $(stat -f '%Sd' /path/to/objdir) | \
perl -lane 'print $F[$#F] if /^\s+type/i'
Once the build system determined "darwin", "diskutil" and "stat" should be
readily available. The expression above returns "apfs" if you need to enact the
patch, and "hfs" if you do not.
>From gcc-bugs-return-593491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 16:41:21 2018
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
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--- Comment #56 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
(In reply to Jens-S. Vöckler from comment #55)
> Would it be worthwhile to limit it to "darwin" *and* "apfs" on objdir?
There is very little downside to applying on all darwin systems (negligible
increase in build time). I would advise to keep it simple.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Thu, 15 Feb 2018 16:51:00 -0000
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--- Comment #57 from Jens-S. Vöckler <jens4303 at me dot com> ---
(In reply to Francois-Xavier Coudert from comment #56)
> I would advise to keep it simple.
Agreed: Simple is better.
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 16:54:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |8.0
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Subject: [Bug c++/84314] [8 Regression] Another ICE in finish_member_declaration
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 16:54:12 2018
New Revision: 257695
URL: https://gcc.gnu.org/viewcvs?rev=257695&root=gcc&view=rev
Log:
PR c++/84314 - ICE with templates and fastcall attribute.
* attribs.c (build_type_attribute_qual_variant): Don't clobber
TYPE_CANONICAL on an existing type.
Added:
trunk/gcc/testsuite/g++.dg/ext/attrib55.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/attribs.c
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |ktkachov at gcc dot gnu.org,
| |nickc at gcc dot gnu.org,
| |rearnsha at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Just double-checked this on current trunk and I still can't reproduce this.
Nor with r248000, r245631 nor 244212 I have around (all crosses).
If anyone can reproduce it, can you please have a look at it?
>From gcc-bugs-return-593496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 17:05:38 2018
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
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Wilco <wilco.dijkstra at arm dot com> changed:
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--- Comment #41 from Wilco <wilco.dijkstra at arm dot com> ---
I'm guessing it's this (64-bit loads reading 32-bit data):
vldr d16, .L39
vldr d17, .L39+8
.L5:
vsub.i32 q10, q11, q8
add r3, r3, #1
vsub.i32 q9, q8, q11
.L39:
.word 1
.word 2
.word 3
.word 4
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Subject: [Bug libffi/84410] New: libffi doesn't support riscv now, but not disabled in configure.ac
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Bug ID: 84410
Summary: libffi doesn't support riscv now, but not disabled in
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The libffi library currently doesn't support UCB RISC-V architecture (both in
the downstream copy and the upstream).
However, in configure.ac it's not masked for riscv*-*-*, and when trying to
build libgo it will try to build libffi and fail.
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
(In reply to Jakub Jelinek from comment #5)
> Just double-checked this on current trunk and I still can't reproduce this.
> Nor with r248000, r245631 nor 244212 I have around (all crosses).
>
> If anyone can reproduce it, can you please have a look at it?
It needs an -mfloat-abi=hard to reproduce.
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Subject: [Bug web/82686] Debian sid powerpc64-unknown-linux-gnu 4.13.0-1-powerpc64 bootstrap breaks in stage3 with unexpected requirement for bdw-gc
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--- Comment #10 from Dennis Clarke <dclarke at blastwave dot org> ---
I had not yet tested a build of gcc previous to gcc 7.x regarding
this issue. Seemed counter intuitive to revert backwards but now
I have to agree that "something changed" again in the world of
doing a bootstrap of gcc. This seems to be happening more and more
and getting gcc to reasonably build is becoming more and more of
a black art as opposed to a science.
I will, for the sake of experimentation, go try a bootstrap of
the gcc 6.4.0 and then if that works out move on to 7.3.0.
I know that our friend Jonathan Wakely in comment 5 of this bug
report. Also there is question if this is a bug at all. I tend
to look at the existence of a bootstrap problem based on testing
across multiple platforms and I can not run into this same problem
on a sparc based Solaris 10 server wherein I do get multi-arch or
at least multi-lib successful build results. There are no test
results posted on the GCC site anymore :
https://gcc.gnu.org/gcc-7/buildstat.html
That seems to have died at least a year ago or more so it is
very difficult to search the vast noise of the maillist using
some format https://gcc.gnu.org/ml/gcc-testresults/YYYY-MM/ as
a target string and then the platform and version. Simply said
it is becoming more and more a black art.
Jonathan says " This library needs to be available for each
multilib variant" from the docs however this is not true at
all on some platforms. Certainly sparc has no issues.
I will try gcc 6.4.0 for the sake of a test and then move onwards.
Dennis Clarke
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Thu, 15 Feb 2018 17:39:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Indeed, with -march=armv7-a -mcpu=cortex-a8 -mfpu=neon -O2 pr82989.c
-mfloat-abi=hard -mprint-tune-info
I can reproduce. prefer_neon_for_64bits seems to be false, and LRA first says:
Choosing alt 4 in insn 7: (0) ?&r (1) r (2) i (3) X (4) X (5) X
{lshrdi3_neon}
which I assume would be with GPRs, but then decides to pick:
Choosing alt 6 in insn 7: (0) ?w (1) w (2) i (3) X (4) X (5) X
{lshrdi3_neon}
instead. That alternative has avoid_neon_for_64bits arch, even when it uses
neon registers, just has ? to disparage it slightly.
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Thu, 15 Feb 2018 17:43:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In both adddi3_neon and lshrdi3_neon the GPR alternatives use exactly the same
number of ?s as the NEON ones with avoid_neon_for_64bits, just the
neon_for_64bits alternatives don't have any. So I don't see how it is a
preference of not using NEON, when TARGET_PREFER_NEON_64BITS is true, neon is
clearly preferred, otherwise there is no preferencing at all. And indeed, for
DImode shifts by 32 the GPR regs should be prefered. Anyway, leaving this to
ARM maintainers, don't know about the arch enough to do something.
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Subject: [Bug preprocessor/83063] [8 Regression] ICE on an invalid preprocessor snippet
Date: Thu, 15 Feb 2018 17:43:00 -0000
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 17:43:01 2018
New Revision: 257696
URL: https://gcc.gnu.org/viewcvs?rev=257696&root=gcc&view=rev
Log:
PR preprocessor/83063 - __VA_OPT__ and ##
PR preprocessor/83708
* macro.c (vaopt_state): Reorder m_last_was_paste before m_state.
(vaopt_state::vaopt_state): Adjust.
(vaopt_state::update_flags): Add BEGIN and END.
(vaopt_state::update): Return them.
(copy_paste_flag): Factor out of replace_args.
(last_token_is): New.
(replace_args): Handle BEGIN and END. Avoid padding there.
(tokens_buff_last_token_ptr): Return NULL if no tokens.
Added:
trunk/gcc/testsuite/c-c++-common/cpp/va-opt-2.c
trunk/gcc/testsuite/c-c++-common/cpp/va-opt-3.c
Modified:
trunk/libcpp/ChangeLog
trunk/libcpp/macro.c
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Subject: [Bug preprocessor/83708] Token-based policy broken by __VA_OPT__
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--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 17:43:01 2018
New Revision: 257696
URL: https://gcc.gnu.org/viewcvs?rev=257696&root=gcc&view=rev
Log:
PR preprocessor/83063 - __VA_OPT__ and ##
PR preprocessor/83708
* macro.c (vaopt_state): Reorder m_last_was_paste before m_state.
(vaopt_state::vaopt_state): Adjust.
(vaopt_state::update_flags): Add BEGIN and END.
(vaopt_state::update): Return them.
(copy_paste_flag): Factor out of replace_args.
(last_token_is): New.
(replace_args): Handle BEGIN and END. Avoid padding there.
(tokens_buff_last_token_ptr): Return NULL if no tokens.
Added:
trunk/gcc/testsuite/c-c++-common/cpp/va-opt-2.c
trunk/gcc/testsuite/c-c++-common/cpp/va-opt-3.c
Modified:
trunk/libcpp/ChangeLog
trunk/libcpp/macro.c
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Subject: [Bug preprocessor/83708] Token-based policy broken by __VA_OPT__
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jason at gcc dot gnu.org
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug preprocessor/83063] [8 Regression] ICE on an invalid preprocessor snippet
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
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Subject: [Bug other/84379] Problems with sol2.c GTY handling
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--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 43431
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43431&action=edit
proposed patch
By closely following what darwin.c does for machopic_indirections, I arrived at
the attached patch which both bootstrapped and fixed the GC related failures
in the jit testsuite.
>From gcc-bugs-return-593509-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 17:51:04 2018
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/84288] Support jit on Solaris
Date: Thu, 15 Feb 2018 17:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84288
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
Depends on| |84379
Ever confirmed|0 |1
--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> ---
I've now developed a patch for PR target/84379 that cures the GC-related
failures
described before.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84379
[Bug 84379] Problems with sol2.c GTY handling
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Subject: [Bug target/84154] [7 Regression] PowerPC GCC 7 and 8 have regression in converting fp to short/char and returning it
Date: Thu, 15 Feb 2018 18:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84154
--- Comment #9 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Thu Feb 15 17:54:41 2018
New Revision: 257697
URL: https://gcc.gnu.org/viewcvs?rev=257697&root=gcc&view=rev
Log:
[gcc]
2018-02-15 Michael Meissner <meissner@linux.vnet.ibm.com>
Back port from trunk
2018-02-07 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84154
* config/rs6000/rs6000.md (fix_trunc<SFDF:mode><QHI:mode>2):
Convert from define_expand to be define_insn_and_split. Rework
float/double/_Float128 conversions to QI/HI/SImode to work with
both ISA 2.07 (power8) or ISA 3.0 (power9). Fix regression where
conversions to QI/HImode types did a store and then a load to
truncate the value. For conversions to VSX registers, don't split
the insn, instead emit the code directly. Use the code iterator
any_fix to combine signed and unsigned conversions.
(fix<uns>_trunc<SFDF:mode>si2_p8): Likewise.
(fixuns_trunc<SFDF:mode><QHI:mode>2): Likewise.
(fix_trunc<IEEE128:mode><QHI:mode>2): Likewise.
(fix<uns>_trunc<SFDF:mode><QHI:mode>2): Likewise.
(fix_<mode>di2_hw): Likewise.
(fixuns_<mode>di2_hw): Likewise.
(fix_<mode>si2_hw): Likewise.
(fixuns_<mode>si2_hw): Likewise.
(fix<uns>_<IEEE128:mode><SDI:mode>2_hw): Likewise.
(fix<uns>_trunc<IEEE128:mode><QHI:mode>2): Likewise.
(fctiw<u>z_<mode>_smallint): Rename fctiw<u>z_<mode>_smallint to
fix<uns>_trunc<SFDF:mode>si2_p8.
(fix_trunc<SFDF:mode><QHI:mode>2_internal): Delete, no longer
used.
(fixuns_trunc<SFDF:mode><QHI:mode>2_internal): Likewise.
(fix<uns>_<mode>_mem): Likewise.
(fctiw<u>z_<mode>_mem): Likewise.
(fix<uns>_<mode>_mem): Likewise.
(fix<uns>_trunc<SFDF:mode><QHSI:mode>2_mem): On ISA 3.0, prevent
the register allocator from doing a direct move to the GPRs to do
a store, and instead use the ISA 3.0 store byte/half-word from
vector register instruction. For IEEE 128-bit floating point,
also optimize stores of 32-bit ints.
(fix<uns>_trunc<IEEE128:mode><QHSI:mode>2_mem): Likewise.
[gcc/testsuite]
2018-02-15 Michael Meissner <meissner@linux.vnet.ibm.com>
Back port from trunk
2018-02-07 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84154
* gcc.target/powerpc/pr84154-1.c: New tests.
* gcc.target/powerpc/pr84154-2.c: Likewise.
* gcc.target/powerpc/pr84154-3.c: Likewise.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/pr84154-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/pr84154-2.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/pr84154-3.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.md
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-593511-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 18:03:20 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 18:04:00 -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| |2018-02-15
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The first revision that can't be bootstrapped with GCC 3.4.6 is again r249234.
While rejecting GCC 4.2.[0-3] with PR33916 unfixed might be an option, I'm
afraid rejecting everything older than that is not.
I'll try to see what's going on in say 4.1.*.
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Subject: [Bug c++/84330] [6/7/8 Regression] [concepts] ICE with broken constraint
Date: Thu, 15 Feb 2018 18:06:00 -0000
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Feb 15 18:05:40 2018
New Revision: 257698
URL: https://gcc.gnu.org/viewcvs?rev=257698&root=gcc&view=rev
Log:
/cp
2018-02-15 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84330
* constraint.cc (tsubst_constraint_info): Handle an error_mark_node
as first argument.
/testsuite
2018-02-15 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84330
* g++.dg/concepts/pr84330.C: New.
Added:
trunk/gcc/testsuite/g++.dg/concepts/pr84330.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constraint.cc
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/70401] [c++1z on mingw]compile variadic template failed
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--- Comment #4 from Rainer Emrich <rainer@emrich-ebersheim.de> ---
gcc-7.3.0 on x86_64-w64-mingw32 doesn't compile this code:
$ g++ -std=c++1z aa.cpp -o aa.exe
aa.cpp: In instantiation of 'std::ostream& operator<<(std::ostream&, const
std::tuple<_Tps ...>&) [with T = {long long unsigned int, long long unsigned
int, const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*}; std::ostream = std::basic_ostream<char>]':
aa.cpp:133:54: required from here
aa.cpp:113:7: error: call of overloaded 'apply(const operator<<(std::ostream&,
const std::tuple<_Tps ...>&) [with T = {long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*, const char*,
long long unsigned int, long long unsigned int, const char*, const char*, long
long unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*}; std::ostream =
std::basic_ostream<char>]::<lambda(auto:1&& ...)>&, const std::tuple<long long
unsigned int, long long unsigned int, const char*, long long unsigned int,
const char*, const char*, long long unsigned int, long long unsigned int, const
char*, const char*, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*>&)' is ambiguous
apply(printer,toprint);
~~~~~^~~~~~~~~~~~~~~~~
aa.cpp:105:6: note: candidate: auto apply(F&&, Tuple&&) [with F = const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long long
unsigned int, long long unsigned int, const char*, long long unsigned int,
const char*, const char*, long long unsigned int, long long unsigned int, const
char*, const char*, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*}; std::ostream =
std::basic_ostream<char>]::<lambda(auto:1&& ...)>&; Tuple = const
std::tuple<long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const
char*>&]
auto apply(F&& f, Tuple&& t) {
^~~~~
In file included from aa.cpp:1:0:
d:\opt\devel\gnu\gcc\mingw_nt\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.3.0\include\c++\7.3.0\tuple:1668:5:
note: candidate: constexpr decltype(auto) std::apply(_Fn&&, _Tuple&&) [with _Fn
= const operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long
long unsigned int, long long unsigned int, const char*, long long unsigned int,
const char*, const char*, long long unsigned int, long long unsigned int, const
char*, const char*, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*}; std::ostream =
std::basic_ostream<char>]::<lambda(auto:1&& ...)>&; _Tuple = const
std::tuple<long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const
char*>&]
apply(_Fn&& __f, _Tuple&& __t)
^~~~~
aa.cpp: In instantiation of 'std::ostream& operator<<(std::ostream&, const
std::tuple<_Tps ...>&) [with T = {long long unsigned int, long long unsigned
int, const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*};
std::ostream = std::basic_ostream<char>]':
aa.cpp:134:53: required from here
aa.cpp:113:7: error: call of overloaded 'apply(const operator<<(std::ostream&,
const std::tuple<_Tps ...>&) [with T = {long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*, const char*,
long long unsigned int, long long unsigned int, const char*, const char*, long
long unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*};
std::ostream = std::basic_ostream<char>]::<lambda(auto:1&& ...)>&, const
std::tuple<long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*>&)' is ambiguous
apply(printer,toprint);
~~~~~^~~~~~~~~~~~~~~~~
aa.cpp:105:6: note: candidate: auto apply(F&&, Tuple&&) [with F = const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long long
unsigned int, long long unsigned int, const char*, long long unsigned int,
const char*, const char*, long long unsigned int, long long unsigned int, const
char*, const char*, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*, const char*,
long long unsigned int, long long unsigned int, const char*, const char*, long
long unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&; Tuple = const std::tuple<long long unsigned int, long long unsigned
int, const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*>&]
auto apply(F&& f, Tuple&& t) {
^~~~~
In file included from aa.cpp:1:0:
d:\opt\devel\gnu\gcc\mingw_nt\x86_64-w64-mingw32\mingw-w64-runtime-trunk-svn\gcc-7.3.0\include\c++\7.3.0\tuple:1668:5:
note: candidate: constexpr decltype(auto) std::apply(_Fn&&, _Tuple&&) [with _Fn
= const operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long
long unsigned int, long long unsigned int, const char*, long long unsigned int,
const char*, const char*, long long unsigned int, long long unsigned int, const
char*, const char*, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, const char*, const char*,
long long unsigned int, long long unsigned int, const char*, const char*, long
long unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&; _Tuple = const std::tuple<long long unsigned int, long long unsigned
int, const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*, long
long unsigned int, const char*, const char*, long long unsigned int, long long
unsigned int, const char*, const char*, long long unsigned int, const char*,
long long unsigned int, long long unsigned int, const char*, long long unsigned
int, long long unsigned int, const char*, long long unsigned int, const char*,
const char*, long long unsigned int, long long unsigned int, const char*, const
char*, long long unsigned int, const char*, long long unsigned int, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, const char*, const char*, long long
unsigned int, long long unsigned int, const char*, const char*, long long
unsigned int, const char*, long long unsigned int, long long unsigned int,
const char*, long long unsigned int, long long unsigned int, const char*>&]
apply(_Fn&& __f, _Tuple&& __t)
^~~~~
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Subject: [Bug c++/84330] [6/7 Regression] [concepts] ICE with broken constraint
Date: Thu, 15 Feb 2018 18:10:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] |[6/7 Regression] [concepts]
|[concepts] ICE with broken |ICE with broken constraint
|constraint |
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/70401] [c++1z on mingw]compile variadic template failed
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--- Comment #5 from Rainer Emrich <rainer@emrich-ebersheim.de> ---
For a recent trunk version 8.0.1 20180207 (experimental) [trunk revision
257437] it's the same.
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Subject: [Bug c++/84368] [8 Regression] return type of generic lambda in variadic lambda in template is not deduced
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 18:15:32 2018
New Revision: 257699
URL: https://gcc.gnu.org/viewcvs?rev=257699&root=gcc&view=rev
Log:
PR c++/84368 - wrong error with local variable in variadic lambda.
* pt.c (tsubst_pack_expansion): Fix handling of non-packs in
local_specializations.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-variadic14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #43428|0 |1
is obsolete| |
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43432
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43432&action=edit
Parallel build of make all-host on 8 core Haswell machine
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Subject: [Bug translation/84303] Styled quotes in error message may be inappropriate
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I'll confirm this.
I would suggest to consider adopting the convention used by other back ends
(e.g, mips or i386) for spelling attribute target: "attribute %<target%>"
(i.e., the word attribute is not quoted but the keyword target is), and/or for
attributes in general used by the middle-end ("%<name%> attribute").
This convention is helpful because there are at least two ways of spelling an
attribute in user code, depending on the language:
__attribute__ ((target)) in both C and C++
[[gnu::target]] in C++
C hasn't adopted the C++ syntax but a proposal for including it in C2X has been
submitted and favorably received. At the same time, some people on the C
committee have been arguing for alternate syntax along the lines of
_Attribute (target)
If this were to adopted (either in favor of the C++ notation or in addition to
it), there would be three different ways to spell the same thing.
Unless GCC can determine and use what appears in the source code using a
generic spelling is less confusing or misleading.
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Subject: [Bug c++/84376] [7/8 Regression] ICE with missing template parameter
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jason at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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Subject: [Bug debug/83758] ICE building gccgo on powerpc64le --with-cpu=power8
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--- Comment #37 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Thu Feb 15 18:36:20 2018
New Revision: 257701
URL: https://gcc.gnu.org/viewcvs?rev=257701&root=gcc&view=rev
Log:
2018-02-15 Aaron Sawdey <acsawdey@linux.vnet.ibm.com>
Back port from mainline
2018-01-30 Aaron Sawdey <acsawdey@linux.vnet.ibm.com>
PR target/83758
* config/rs6000/rs6000.c (rs6000_internal_arg_pointer): Only return
a reg rtx.
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/rs6000/rs6000.c
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Subject: [Bug libffi/84410] libffi doesn't support riscv now, but not disabled in configure.ac
Date: Thu, 15 Feb 2018 18:40:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Neither does libgo support RISC-V yet.
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #10)
> Created attachment 43432 [details]
> Parallel build of make all-host on 8 core Haswell machine
This was generated with a slightly modified make (being able to run fully in
parallel):
https://github.com/marxin/make/tree/timestamp-v2
And output is then parsed and 'stacked' graph is generated:
https://github.com/marxin/script-misc/blob/master/parse-make-log-parallel.py
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 18:44:00 -0000
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--- Comment #3 from Jozef Lawrynowicz <jozefl.gcc at gmail dot com> ---
Created attachment 43433
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43433&action=edit
define {u,}mulhipsi3 insns
I applied the patch but trunk still ICEs.
After defining some insns for "umulhipsi3" and "mulhipsi3" in msp430.md, the
build gets a little further, but then a case is encountered where a widen from
QI to PSI is attempted. QI != PARTIAL_INT_MODE, so we ICE again.
The insns in attached patch are mostly just copied from the mulhisi*, so are
almost definitely not correct, but they are at least there for GCC to use in
the build.
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 18:46:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think Richard needs to explain why he changed the function from using
GET_MODE_WIDER_MODE to the assert + simple iteration on modes, it isn't clear
from his patch why it was changed. Does that not really work with the variable
sized modes on SVE?
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Subject: [Bug testsuite/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Thu Feb 15 18:46:22 2018
New Revision: 257703
URL: https://gcc.gnu.org/viewcvs?rev=257703&root=gcc&view=rev
Log:
2018-02-15 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/84381
* gfortran.dg/stop_shouldfail.f90: New test.
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug debug/83758] ICE building gccgo on powerpc64le --with-cpu=power8
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acsawdey at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #38 from acsawdey at gcc dot gnu.org ---
Backports complete, so this can be closed.
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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--- Comment #16 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #15)
> Full testcase suitable for configure:
> extern "C" void abort ();
> struct S { ~S () { if (x) abort (); }; int x, y, z; };
> void foo (S *p) { *p = S (); }
> int main () { S s; s.x = 1; s.y = 2; s.z = 3; foo (&s); if (s.x != 0 || s.y
> != 0 || s.z != 0) abort (); }
> Given how many places r249234 changed, adding workarounds for the PR33916
> GCC 4.2.[0-3] bug might be too pervasive. All 4.2.* compilers from 20061017
> to 20080212 are likely broken, unless patched.
I can confirm that this aborts for me when compiled with g++ 4.2.1 with -O2.
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
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--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> I think Richard needs to explain why he changed the function from using
> GET_MODE_WIDER_MODE to the assert + simple iteration on modes, it isn't
> clear from his patch why it was changed. Does that not really work with the
> variable sized modes on SVE?
FOR_EACH_MODE does use GET_MODE_WIDER_MODE. I think problem is just
with the assertion.
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Subject: [Bug c++/84411] New: Missed optimization: static guard variable generated for empty virtual destructor
Date: Thu, 15 Feb 2018 19:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84411
Bug ID: 84411
Summary: Missed optimization: static guard variable generated
for empty virtual destructor
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: arthur.j.odwyer at gmail dot com
Target Milestone: ---
Consider the following program:
struct Base {
constexpr Base() = default;
virtual int foo();
// virtual ~Base() = default;
};
struct Derived : public Base {
constexpr Derived() = default;
virtual int foo() override;
};
Base& get_base() {
static Derived d;
return d;
}
This is a simplified version of the current idioms around `std::error_category`
and `std::pmr::memory_resource`, except that for now I have commented-out the
virtual destructor.
Notice that because `Derived d` is trivially destructible, no atomic guard
variable is generated to register its destructor with __cxa_atexit.
Now uncomment the defaulted virtual destructor of `Base`. The semantics of
`Derived d` have not changed: we are still expecting to call ~Derived by
non-virtual dispatch, and ~Derived is still known statically to be a no-op. But
now suddenly GCC decides to generate an atomic guard variable and a call to
`__cxa_atexit`!
I think GCC could do better here, and if it did, it would eliminate a lot of
atomic instructions in the critical path for things like `std::error_code{}`
and `std::pmr::new_delete_resource()`.
>From gcc-bugs-return-593531-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:05:55 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 19:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|jakub at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, there are two assertions, and without the first one the second one
doesn't work either, modes from different classes aren't well ordered.
>From gcc-bugs-return-593532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:10:51 2018
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 19:13:00 -0000
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--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 43434
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43434&action=edit
Possible patch
This is the kind of change I was thinking of.
>From gcc-bugs-return-593533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:13:06 2018
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 19:14:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 43434
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43434
Possible patch
From the above comments, from_mode can be also MODE_INT and to_mode
MODE_PARTIAL_INT, though I wonder how, because it clearly couldn't reach the
PSImode by FOR_EACH_MODE.
>From gcc-bugs-return-593534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:14:45 2018
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Subject: [Bug libstdc++/83982] Exception guarantee of C++14 vector::resize(size_type) is not met
Date: Thu, 15 Feb 2018 19:33:00 -0000
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--- Comment #3 from Daniel Trebbien <dtrebbien at gmail dot com> ---
Friendly reminder: I have attached a patch for this issue which I would like to
have reviewed and committed.
>From gcc-bugs-return-593535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:33:52 2018
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 19:34:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, seems it is that hash-table.h change that really doesn't work in GCC
r132088, not just 4.2.*, but any (tried even 3.2).
The implicitly defined default constructor for A (hash_map<...>::hash_entry in
gcc) doesn't initialize the POD t field (which is correct I assume, current
trunk doesn't do that either), but the value initialization before r132088 only
constructs the non-POD u field of A and doesn't initialize t at all (in GCC
that is the m_key, in the stuck case with type edge_def *).
extern "C" void abort ();
template<typename T, typename U>
struct A { T t; U u; };
struct B { B (); ~B (); int b; };
B::B () : b (9) {}
B::~B () {}
template <typename T>
void foo (T *p) { *p = T (); }
int
main ()
{
int a;
A<int *, B> h;
h.t = &a;
foo (&h);
if (h.t)
abort ();
}
So, either we need to conditionally revert (for say
#if GCC_VERSION != 0 && GCC_VERSION < 4003 && !defined(__clang__)
) the hash-table.h change and use memset.h for old GCCs, or we need some
template hackery to determine if value_type is hash_map<something>::hash_entry
from hash-map.h and instead of using *entries = value_type (); do
entries->m_key = value_type::compare_type ();
entries->m_value = something ();
Ugh.
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Subject: [Bug fortran/84412] New: Erroneous "Inquire statement identifies an internal file" error
Date: Thu, 15 Feb 2018 19:39:00 -0000
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Bug ID: 84412
Summary: Erroneous "Inquire statement identifies an internal
file" error
Product: gcc
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Using gfortran 8.0.1 (r257607) the following produces an erroneous error of
"Inquire statement identifies an internal file":
program bug
implicit none
integer :: i
character(len=1) :: s
write (s,'(i1)') 0
open(newUnit=i,file='bug.txt',status='unknown')
inquire(unit=i)
end program bug
$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/home/abenson/Galacticus/Tools/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/home/abenson/Galacticus/Tools
--enable-languages=c,c++,fortran --disable-multilib
Thread model: posix
gcc version 8.0.1 20180212 (experimental) (GCC)
$ gfortran bug.F90
$ a.out
At line 7 of file bug.F90
Fortran runtime error: Inquire statement identifies an internal file
Error termination. Backtrace:
#0 0x7fd470750d44 in inquire_via_unit
at ../../../gcc-trunk/libgfortran/io/inquire.c:47
#1 0x400969 in ???
#2 0x4009a0 in ???
#3 0x7fd46fb7ed0c in __libc_start_main
at /data001/abenson/Galacticus/Tools/glibc-2.12.1/csu/libc-start.c:226
#4 0x4006f8 in ???
If the WRITE statement is removed the error does not occur.
>From gcc-bugs-return-593537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 19:39:31 2018
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Subject: [Bug tree-optimization/84114] global reassociation pass prevents fma usage, generates slower code
Date: Thu, 15 Feb 2018 19:44:00 -0000
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--- Comment #4 from Steve Ellcey <sje at gcc dot gnu.org> ---
While teaching the reassociation pass about fma's seems like the right answer
would it be reasonable (and simpler) to do the fma pass
(pass_optimize_widening_mul) before
the reassociation pass (pass_reassoc) to get the most fma's?
That fixes my small test case but I haven't done a bigger performance check
to see what the overall impact would be.
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 19:46:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #9 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 43435
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43435&action=edit
Possible patch v2
(In reply to Jakub Jelinek from comment #8)
> From the above comments, from_mode can be also MODE_INT and to_mode
> MODE_PARTIAL_INT, though I wonder how, because it clearly couldn't reach the
> PSImode by FOR_EACH_MODE.
Ah, missed that. So in those cases, the limit mode should
be the containing MODE_INT rather than to_mode itself.
Second try.
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Subject: [Bug c++/84376] [7/8 Regression] ICE with missing template parameter
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|7.4 |8.0
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for GCC 8.
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Subject: [Bug c++/84376] [7/8 Regression] ICE with missing template parameter
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 19:46:13 2018
New Revision: 257706
URL: https://gcc.gnu.org/viewcvs?rev=257706&root=gcc&view=rev
Log:
PR c++/84376 - ICE with omitted template arguments.
* pt.c (dguide_name_p): Check for IDENTIFIER_NODE.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction47.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 19:47:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #10 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 43436
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43436&action=edit
Possible patch v2
Sigh, attached wrong file last time.
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug jit/84288] Support jit on Solaris
Date: Thu, 15 Feb 2018 19:49:00 -0000
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--- Comment #4 from Rainer Orth <ro at gcc dot gnu.org> ---
(In reply to Rainer Orth from comment #0)
[...]
> * In the 32-bit case, two tests FAIL like this:
>
> PASSED: test-vector-rvalues.cc.exe iteration 1 of 5: verify_vec_code: fn is
> non-null
> FAILED: test-vector-rvalues.cc.exe iteration 1 of 5: check_div: actual:
> c[i] != expected: a[i] / b[i]
> incorrect value
[...]
> FAILED: test-vector-types.cc.exe iteration 1 of 5: check_div:
> actual: c[i] != expected: a[i] / b[i]
> incorrect value
[...]
> ISTM that check_div needs to use CHECK_DOUBLE_VALUE here.
I've just run an i686-pc-linux-gnu build and see exactly the same errors. So
this
seems to be a 32-bit (or 32-bit x86) issue.
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Subject: [Bug target/84154] [7 Regression] PowerPC GCC 7 and 8 have regression in converting fp to short/char and returning it
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--- Comment #10 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Thu Feb 15 19:57:46 2018
New Revision: 257707
URL: https://gcc.gnu.org/viewcvs?rev=257707&root=gcc&view=rev
Log:
2018-02-15 Michael Meissner <meissner@linux.vnet.ibm.com>
Back port from trunk
2018-02-06 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84154
* config/rs6000/rs6000.md (su code attribute): Use "u" for
unsigned_fix, not "s".
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/rs6000/rs6000.md
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
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--- Comment #11 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 43437
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Possible patch v2
This time for real.
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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++/81764] [6/7/8 Regression] Visibility attributes for explicitly instantiated template class get warned if it has been implicitly instantiated
Date: Thu, 15 Feb 2018 20:00:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.1.0
Keywords| |diagnostic
Last reconfirmed| |2018-02-15
CC| |msebor at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=84318
Ever confirmed|0 |1
Summary|Visibility attributes for |[6/7/8 Regression]
|explicitly instantiated |Visibility attributes for
|template class get warned |explicitly instantiated
|if it has been implicitly |template class get warned
|instantiated |if it has been implicitly
| |instantiated
Known to fail| |4.2.2, 4.3.2, 4.6.0, 5.4.0,
| |6.3.0, 7.2.0, 8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning might be helpful if the explicit specialization declaration
attempted to specify different visibility that the primary template (assuming
the declaration of the specialization inherits the attribute from the template)
but it's pointless when it simply reiterates the same visibility, and it would
be wrong if the specialization didn't "inherit" its attributes from the
primary. With that, I would say that it's not desirable (even though it is
intended in other cases). With that I confirm it as a bug.
The warning wasn't issued prior to r115086 (committed into GCC 4.2) so it's
also aa regression, albeit a very old one.
As the test case below shows, the warning isn't unique to the visibility
attribute. It affects other type attributes as well. Here too the warning is
pointless regardless of how attributes are treated.
Unfortunately, specifying an attribute on the declaration of an explicit
instantiation isn't specified either in C++ or in G++ and it not clear that we
know or have consensus what we want it to mean (see for example bug 84318), so
this bug isn't likely to get a lot attention until the confusion around
attributes and templates has been cleared up.
$ cat t.C && gcc -S -Wall -Wextra -Wpedantic t.C
template <class = void> class A;
template <class>
struct alignas (32) A
{
static int f () { return A<>::f (); }
};
extern template struct alignas (32) A<>;
static_assert (alignof (A<>) == 32, "");
t.C:9:37: warning: type attributes ignored after type is already defined
[-Wattributes]
extern template struct alignas (32) A<>;
^~~
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Subject: [Bug c++/84045] [7/8 Regression] ICE when is_nothrow_default_constructible is used before #include<set>
Date: Thu, 15 Feb 2018 20:22:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
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From: "matthijsvanduin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Thu, 15 Feb 2018 20:26:00 -0000
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--- Comment #9 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
I can still reproduce the same test case with: arm-linux-gnueabihf-gcc-8
(Debian 8-20180207-2) 8.0.1 20180207 (experimental) [trunk revision 257435]
-mfloat-abi=hard is implicit for arm-linux-gnueabihf, although overriding that
to -mfloat-abi=softfp produces exactly the same result for me.
(-mfloat-abi=soft completely disables all use of VFP/Neon hence obviously
suppresses this problem.)
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Subject: [Bug testsuite/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Thu, 15 Feb 2018 20:35:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The actual commit was r257702 .
>From gcc-bugs-return-593549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 20:35:49 2018
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Thu, 15 Feb 2018 20:40:00 -0000
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--- Comment #42 from Wilco <wilco.dijkstra at arm dot com> ---
Cut down example:
typedef struct { int x, y; } X;
void f (X *p, int n)
{
for (int i = 0; i < n; i++)
{ p[i].x = i;
p[i].y = i + 1;
}
}
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Subject: [Bug target/84413] New: -march=skylake-avx512 disables BT instruction
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Bug ID: 84413
Summary: -march=skylake-avx512 disables BT instruction
Product: gcc
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Target: x86
[hjl@gnu-skx-1 gcc]$ cat x.c
unsigned long long bextr64_demanded(unsigned long long x)
{
return x | 0x8000000000;
}
[hjl@gnu-skx-1 gcc]$ ./xgcc -B./ -S -O2 x.c -march=skylake-avx512
[hjl@gnu-skx-1 gcc]$ cat x.s
.file "x.c"
.text
.p2align 4,,15
.globl bextr64_demanded
.type bextr64_demanded, @function
bextr64_demanded:
.LFB0:
.cfi_startproc
movabsq $549755813888, %rax
orq %rdi, %rax
xorl %edi, %edi
ret
.cfi_endproc
.LFE0:
.size bextr64_demanded, .-bextr64_demanded
.ident "GCC: (GNU) 8.0.1 20180212 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-skx-1 gcc]$ ./xgcc -B./ -S -O2 x.c
[hjl@gnu-skx-1 gcc]$ cat x.s
.file "x.c"
.text
.p2align 4,,15
.globl bextr64_demanded
.type bextr64_demanded, @function
bextr64_demanded:
.LFB0:
.cfi_startproc
movq %rdi, %rax
xorl %edi, %edi
btsq $39, %rax
ret
.cfi_endproc
.LFE0:
.size bextr64_demanded, .-bextr64_demanded
.ident "GCC: (GNU) 8.0.1 20180212 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-skx-1 gcc]$
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Thu, 15 Feb 2018 21:04:00 -0000
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--- Comment #58 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Feb 15 20:56:41 2018
New Revision: 257710
URL: https://gcc.gnu.org/viewcvs?rev=257710&root=gcc&view=rev
Log:
PR libstdc++/81797 Add .NOTPARALLEL to include/Makefile for darwin
PR libstdc++/81797
* configure.ac (INCLUDE_DIR_NOTPARALLEL): Define.
* configure: Regenerate.
* include/Makefile.am (INCLUDE_DIR_NOTPARALLEL): Add .NOTPARALLEL when
defined.
* include/Makefile.in: Regenerate.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/configure
trunk/libstdc++-v3/configure.ac
trunk/libstdc++-v3/include/Makefile.am
trunk/libstdc++-v3/include/Makefile.in
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Thu, 15 Feb 2018 21:06:00 -0000
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--- Comment #2 from Vipul Parekh <fortranfan at outlook dot com> ---
Thank for your response.
Per section 1.4.1 in 10-007r1 toward Fortran 2008 on syntax rules toward the
BNF convention in the document, line 16 says [] encloses an optional item.
R1303 format-items is format-item [ [ , ] format-item ]
then suggests the comma in the format item is optional and the format in the
first post should work as shown.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
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--- Comment #59 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed on trunk, please test and confirm.
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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:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
There's been recent changes to the __cold_sect_of_*-affecting code on Darwin;
can you check and see if this is still an issue?
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84409] [F03] check DTIO arguments for character len
Date: Thu, 15 Feb 2018 21:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84409
--- Comment #2 from janus at gcc dot gnu.org ---
Author: janus
Date: Thu Feb 15 21:16:00 2018
New Revision: 257711
URL: https://gcc.gnu.org/viewcvs?rev=257711&root=gcc&view=rev
Log:
2018-02-15 Janus Weil <janus@gcc.gnu.org>
PR fortran/84409
* interface.c (check_dtio_arg_TKR_intent): Add a check for character
length.
2018-02-15 Janus Weil <janus@gcc.gnu.org>
PR fortran/84409
* gfortran.dg/dtio_21.f03: Add an error message.
* gfortran.dg/dtio_22.f90: Fix invalid test case.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/interface.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/dtio_21.f90
trunk/gcc/testsuite/gfortran.dg/dtio_22.f90
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Subject: [Bug libstdc++/83982] Exception guarantee of C++14 vector::resize(size_type) is not met
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The trunk is currently closed for non-regression changes, as we prepare for the
GCC 8 release.
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Subject: [Bug fortran/84409] [F03] check DTIO arguments for character len
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |8.0
--- Comment #3 from janus at gcc dot gnu.org ---
Fixed with r257711. Closing.
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Subject: [Bug testsuite/84094] several correctness issues in gfortran.dg
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Bug 84094 depends on bug 84409, which changed state.
Bug 84409 Summary: [F03] check DTIO arguments for character len
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84409
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Thu, 15 Feb 2018 21:23:00 -0000
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--- Comment #3 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Thu, Feb 15, 2018 at 09:04:24PM +0000, fortranfan at outlook dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84389
>
> --- Comment #2 from Vipul Parekh <fortranfan at outlook dot com> ---
> Thank for your response.
>
> Per section 1.4.1 in 10-007r1 toward Fortran 2008 on syntax rules toward the
> BNF convention in the document, line 16 says [] encloses an optional item.
>
> R1303 format-items is format-item [ [ , ] format-item ]
>
> then suggests the comma in the format item is optional and the format in the
> first post should work as shown.
>
Ah, indeed! You are correct. I simply missed the enclosing [ ]
in looking through all of the ENBDF rules.
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-15
Ever confirmed|0 |1
--- Comment #4 from kargl at gcc dot gnu.org ---
Confirmed.
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Subject: [Bug target/65604] MIPS -fno-delayed-branch generates incorrect code with -mcheck-zero-division
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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 Steve Ellcey from comment #4)
> Author: sje
> Date: Fri Jan 29 16:29:58 2016
> New Revision: 232985
>
> URL: https://gcc.gnu.org/viewcvs?rev=232985&root=gcc&view=rev
> Log:
> PR target/65604
> * config/mips/mips.c (mips_output_division): Check flag_delayed_branch.
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/config/mips/mips.c
(In reply to Steve Ellcey from comment #5)
> Author: sje
> Date: Fri Jan 29 16:31:18 2016
> New Revision: 232986
>
> URL: https://gcc.gnu.org/viewcvs?rev=232986&root=gcc&view=rev
> Log:
> PR target/65604
> * gcc.target/mips/div-delay.c: New test.
>
> Added:
> trunk/gcc/testsuite/gcc.target/mips/div-delay.c
> Modified:
> trunk/gcc/testsuite/ChangeLog
Did these commits fix this bug?
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Thu, 15 Feb 2018 21:29:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Another testcase that could in theory affect vec_default_construct is:
extern "C" void abort ();
typedef __typeof (sizeof (0)) size_t;
inline void *operator new (size_t, void * p) { return p; }
extern "C" void *memset (void *, int, size_t);
template<typename T, typename U>
struct A { T t; U u; };
struct B { B (); ~B (); int b; };
B::B () : b (9) {}
B::~B () {}
template <typename T>
void foo (char *p) { new (p) T (); }
int
main ()
{
int a;
struct S
{
A<int *, B> b;
char c[sizeof (A<int *, B>)];
} s;
A<int *, B> *p = (A<int *, B> *) &s.c;
memset (s.c, 0x55, sizeof (s.c));
foo <A<int *, B> > (s.c);
if (p->t)
abort ();
}
and that was fixed in PR11309 / r138355 only in 4.4.
And Jon mentions another one value initialization related - PR30111.
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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/81611] [8 Regression] gcc un-learned loop / post-increment optimization
Date: Thu, 15 Feb 2018 21:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81611
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #22 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Alexandre Oliva from comment #21)
> Author: aoliva
> Date: Tue Jan 30 17:40:50 2018
> New Revision: 257194
>
> URL: https://gcc.gnu.org/viewcvs?rev=257194&root=gcc&view=rev
> Log:
> [PR81611] accept copies in simple_iv_increment_p
>
> If there are copies between the GIMPLE_PHI at the loop body and the
> increment that reaches it (presumably through a back edge), still
> regard it as a simple_iv_increment, so that we won't consider the
> value in the back edge eligible for forwprop. Doing so would risk
> making the phi node and the incremented conflicting value live
> within the loop, and the phi node to be preserved for propagated
> uses after the loop.
>
> for gcc/ChangeLog
>
> PR tree-optimization/81611
> * tree-ssa-dom.c (simple_iv_increment_p): Skip intervening
> copies.
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/tree-ssa-dom.c
Did this fix it?
>From gcc-bugs-return-593564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 21:49:48 2018
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From: "jozefl.gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
Date: Thu, 15 Feb 2018 21:56:00 -0000
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--- Comment #12 from Jozef Lawrynowicz <jozefl.gcc at gmail dot com> ---
(In reply to rsandifo@gcc.gnu.org from comment #11)
> Created attachment 43437 [details]
> Possible patch v2
>
> This time for real.
Thanks, patch looks good to me, and the original testcase does indeed pass with
it applied.
Trunk still doesn't build for msp430-elf, but that seems to be an unrelated bug
in libstdc++.
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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/81611] [8 Regression] gcc un-learned loop / post-increment optimization
Date: Thu, 15 Feb 2018 22:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81611
--- Comment #23 from Jeffrey A. Law <law at redhat dot com> ---
No, the DOM change is only a partial fix. I've largely approved the auto-inc
change. I recommend the additional tests in c#19 be pulled into a distinct BZ
and the gcc8 regression marker removed once the auto-inc changes are committed.
>From gcc-bugs-return-593566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:02:14 2018
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Subject: [Bug c++/84045] [7 Regression] ICE when is_nothrow_default_constructible is used before #include<set>
Date: Thu, 15 Feb 2018 22:04:00 -0000
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Feb 15 22:01:33 2018
New Revision: 257713
URL: https://gcc.gnu.org/viewcvs?rev=257713&root=gcc&view=rev
Log:
PR c++/84045 - ICE with typedef and noexcept.
* except.c (build_noexcept_spec): Use strip_typedefs_expr.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept32.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/except.c
>From gcc-bugs-return-593567-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:04:45 2018
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Subject: [Bug c++/82468] [7/8 Regression] ICE with deduction guide template
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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 #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Looking into it.
>From gcc-bugs-return-593568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:08:35 2018
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Subject: [Bug target/84363] [8 Regression] Assembler error in stage1/libgcc: Error: view number mismatch
Date: Thu, 15 Feb 2018 22:15:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |law at redhat dot com
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Should be fixed by r257631.
>From gcc-bugs-return-593569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:15:51 2018
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Subject: [Bug fortran/84094] several correctness issues in gfortran.dg
Date: Thu, 15 Feb 2018 22:16:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Makes more sense as a Fortran issue, IMHO.
>From gcc-bugs-return-593570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:16:42 2018
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Subject: [Bug fortran/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Thu, 15 Feb 2018 22:20:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-02-15
Component|testsuite |fortran
Ever confirmed|0 |1
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Better as a fortran issue - I searched for it in
the Fortran bugs, and missed it at first.
Confirming.
>From gcc-bugs-return-593571-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:20:10 2018
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Subject: [Bug target/84413] -march=skylake-avx512 disables BT instruction
Date: Thu, 15 Feb 2018 22:21:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Besides X86_TUNE_USE_BT, there is probably a long list of flags that have to be
enabled for m_SKYLAKE_AVX512 (and m_CANNONLAKE and m_ICELAKE).
Somebody will have to go through all tune flags for the above mentioned
targets.
>From gcc-bugs-return-593572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:21:08 2018
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Subject: [Bug c++/83227] [7/8 Regression] internal compiler error: in process_init_constructor_array
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Jason Merrill <jason at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:23:56 2018
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Subject: [Bug middle-end/49899] ICE when redeclaring a static function as weak
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Nick Clifton from comment #2)
> I have proposed the patch on the gcc-patches list:
>
> https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01180.html
Adding "patch" keyword
>From gcc-bugs-return-593574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:29:03 2018
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Subject: [Bug rtl-optimization/64081] [6/7/8 Regression] r217827/8 prevents RTL loop unroll
Date: Thu, 15 Feb 2018 22:31:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #62 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #61)
> Punting to gcc-8. The patch needs additional work and Aldy is poking at
> something else at this point. The Aldy's analysis of the AIX issue should
> allow this to be pushed forward in the gcc-8 development cycle.
Same logic to punt to gcc-9 at this point?
>From gcc-bugs-return-593575-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:31:33 2018
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Subject: [Bug fortran/84354] Replace '%qs' with %qs in fortran/decl.c
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 22:51:08 2018
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Subject: [Bug c++/70076] no exception for excess initializer elements in a multidimensional VLA
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |egallager at gcc dot gnu.org,
| |jason at gcc dot gnu.org
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| |a/show_bug.cgi?id=69517
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #1)
> Patch for bug 69517 posted for review (below) includes a fix for this bug as
> well:
> https://gcc.gnu.org/ml/gcc-patches/2016-03/msg00441.html
Adding "patch" keyword then
>From gcc-bugs-return-593577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 23:08:22 2018
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Subject: [Bug c++/84355] [7/8 Regression] ICE with failing template argument deduction
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 15 23:15:53 2018
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Subject: [Bug fortran/80945] Invalid code with allocatable character array in READ/WRITE statement
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 43438
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43438&action=edit
A demo patch for the PR
This does the job but sucks stylistically. I will sort out something better.
It does regtest fine, though :-) It also fixes:
program main
implicit none
integer:: i
integer, parameter:: N = 10
character(len=:), dimension(:),allocatable:: ca
character(len=:), dimension(:,:),allocatable:: cb
allocate(character(len=N) :: ca(3))
ca(1) = "foo"
ca(2) = "bar"
ca(3) = "xyzzy"
write (*, '(3A5)') ca(1:3)
allocate(character(len=N) :: cb(3,2))
cb(1,1) = "foo"
cb(2,1) = "bar"
cb(3,1) = "xyzzy"
write (*, '(3A5)') cb(1:3,1) ! Hence the assignment of the rank!
end program
Paul
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Subject: [Bug c++/84355] [7/8 Regression] ICE with failing template argument deduction
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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> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00944.html
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Subject: [Bug c++/84414] New: miscompile due to assuming that object returned by value cannot alias its own member pointer values
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84414
Bug ID: 84414
Summary: miscompile due to assuming that object returned by
value cannot alias its own member pointer values
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: richard-gccbugzilla at metafoo dot co.uk
CC: timshen at gcc dot gnu.org
Target Milestone: ---
GCC (all versions) miscompiles this code:
struct A {
A *children;
long long arr[100];
A() : children() {}
A(int) : children(this) {}
};
__attribute__((noinline))
A Foo() {
return A(0);
}
A x[3] = {};
void Bar(int n) {
A a = Foo();
for (int i = 0; i < n; i++) {
a.children[i].children = x;
}
}
int main() {
Bar(3);
return x[0].children || !x[1].children || !x[2].children;
}
A correct compilation must return 0 from main, but GCC at -O2 returns 1. The
reason is that it fails to reload 'a.children' on each iteration of the loop in
'Bar', reasoning (incorrectly) that the store to 'a.children[i].children'
cannot alias 'a.children' because 'a' has not escaped.
The above code has defined behavior in C++17, where the 'guaranteed copy
elision' rules mean that the 'this' pointer inside the A::A(int) constructor
points to the 'a' object inside 'Bar'. But since GCC chooses to perform copy
elision on this code in all language modes (and always has done so), and the
fact that it performed copy-elision is observable, this is not a C++17-specific
bug. (The same miscompile can also be observed via NRVO.)
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Subject: [Bug libstdc++/83982] Exception guarantee of C++14 vector::resize(size_type) is not met
Date: Fri, 16 Feb 2018 00:12:00 -0000
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--- Comment #5 from Daniel Trebbien <dtrebbien at gmail dot com> ---
Ah! Thank you for letting me know.
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Subject: [Bug c++/84414] miscompile due to assuming that object returned by value cannot alias its own member pointer values
Date: Fri, 16 Feb 2018 00:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84414
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
To me, the temp object A inside Foo ends its scope at the end function (even
with guaranteed copy elision).
Because this would mean the compiler will have to assume nothing about any
structs that are returned which seems backwards and even counter to the
language itself.
Maybe it is time to file a DR to the C++ language folks about this case if
there is not one already. Where does the scope of object A inside Foo begin
and end?
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Fri, 16 Feb 2018 01:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84389
--- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
This patch fixes the problem, but I'm in an area of
the compiler that I do not too well. It might open
gfortran to other problems. Jerry, any comments?
Index: io.c
===================================================================
--- io.c (revision 257695)
+++ io.c (working copy)
@@ -1012,8 +1012,7 @@ data_desc:
goto between_desc;
default:
- error = unexpected_element;
- goto syntax;
+ goto format_item_1;
}
break;
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Subject: [Bug debug/84404] Several "leb128 operand is an undefined symbol" in go testsuite with latest debug improvements
Date: Fri, 16 Feb 2018 01:43:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> ---
I see the same issue w/ the following snippet compiled w/ -O2
-ftree-parallelize-loops=2 -floop-nest-optimize -g:
int te[9];
void
dt (int cz)
{
while (cz < 1)
{
int xy;
for (xy = 0; xy < 9; ++xy)
te[xy] = 0;
++cz;
}
}
% gcc-8.0.0-alpha20180211 -O2 -ftree-parallelize-loops=2 -floop-nest-optimize
-g -c pr84404.c
/tmp/ccfu80w2.s: Assembler messages:
/tmp/ccfu80w2.s:700: Error: leb128 operand is an undefined symbol: .LVU12
as of r257571.
GNU as 2.30 seems to be the key here.
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Subject: [Bug debug/84404] Several "leb128 operand is an undefined symbol" in go testsuite with latest debug improvements
Date: Fri, 16 Feb 2018 02:28:00 -0000
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--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Arseny Solokha from comment #3)
> I see the same issue
This is x86_64-pc-linux-gnu.
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84349] [6/7/8 Regression] ICE with auto in function cast
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.4
Known to fail| |4.9.4, 5.5.0, 6.4.0, 7.2.0,
| |8.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
A slightly simpler test case:
void *p = (int(*)(auto))0;
The bug seems to be that the auto isn't rejected in this context (namespace
scope). The same initializer is rejected in local scope.
Accepting it in an initializer expression results in incrementing the
processing_template_decl counter in the test case from its initial value of
zero to 1. The counter doesn't get decremented back to zero which then
triggers the unpaired call to finish_lambda_scope() below:
if (!member_p && processing_template_decl)
start_lambda_scope (decl);
initializer = cp_parser_initializer (parser,
&is_direct_init,
&is_non_constant_init);
if (!member_p && processing_template_decl)
finish_lambda_scope ();
AFAICS, the problem is somewhere in cp_parser_decl_specifier_seq() that creates
a decl_specifiers.type for the initializer at global scope for which
type_uses_auto() returns null.
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Subject: [Bug c++/84349] [6/7/8 Regression] ICE with auto in function cast
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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
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Subject: [Bug c++/83227] [7/8 Regression] internal compiler error: in process_init_constructor_array
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 02:47:19 2018
New Revision: 257720
URL: https://gcc.gnu.org/viewcvs?rev=257720&root=gcc&view=rev
Log:
PR c++/83227 - C++17 ICE with init-list derived-to-base conversion.
* call.c (convert_like_real): Don't use the copy-list-initialization
shortcut for ck_base.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist98.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/81789] CWG1687 performed too soon
Date: Fri, 16 Feb 2018 02:54:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-02-16
CC| |msebor at gcc dot gnu.org
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. This was never rejected, so it's not a regression. Looks like the
issue resolution is not implemented yet.
>From gcc-bugs-return-593590-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 02:54:34 2018
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Subject: [Bug c++/84414] miscompile due to assuming that object returned by value cannot alias its own member pointer values
Date: Fri, 16 Feb 2018 03:01:00 -0000
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--- Comment #2 from Richard Smith <richard-gccbugzilla at metafoo dot co.uk> ---
> Where does the scope of object A inside Foo begin and end?
There is formally only one object. The object constructed in the return
statement of Foo is simply the same object that is named 'a' within Bar.
> Maybe it is time to file a DR to the C++ language folks about this case
> if there is not one already.
Hmm, the [class.temporary]/3 rule already gets very close to allowing this:
"When an object of class type X is passed to or returned from a function, if
each copy constructor, move constructor, and destructor of X is either trivial
or deleted, and X has at least one non-deleted copy or move constructor,
implementations are permitted to create a temporary object to hold the function
parameter or result object. The temporary object is constructed from the
function argument or return value, respectively, and the function’s parameter
or return object is initialized as if by using the non-deleted trivial
constructor to copy the temporary (even if that constructor is inaccessible or
would not be selected by overload resolution to perform a copy or move of the
object). [ Note: This latitude is granted to allow objects of class type to be
passed to or returned from functions in registers. — end note ]"
In fact, I think the *only* problem here is that the above rule does not allow
the caller and the callee to observe the objects having the same address.
I'll take this to the committee and see whether we can get that rule relaxed
slightly.
Would you be OK with this optimization only being permitted for the above class
types (those that can be passed/returned in registers)?
>From gcc-bugs-return-593591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 03:01:06 2018
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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/67999] Wrong optimization of pointer comparisons
Date: Fri, 16 Feb 2018 03:10:00 -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 #27 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Alexander Cherepanov from comment #4)
> Interesting. In particular, this means that the warning "Argument 'size' of
> function malloc has a fishy (possibly negative) value" from valgrind is a
> serious thing. Is this gcc limitation documented somewhere? Is there a
> better reference than this bug?
GCC 7 and later mention it in the documentation of the
-Walloc-size-larger-than=n option. It should be documented more prominently.
They also diagnose the program in comment #0:
pr67999.c: In function ‘main’:
pr67999.c:7:15: warning: argument 1 value ‘3221225472’ exceeds maximum object
size 2147483647 [-Walloc-size-larger-than=]
char *buf = malloc(len);
^~~~~~~~~~~
In file included from pr67999.c:2:
/usr/include/stdlib.h:427:14: note: in a call to allocation function ‘malloc’
declared here
extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
^~~~~~
>
> Am I right that the C standards do not allow for such a limitation (and
> hence this should not be reported to glibc as a bug) and gcc is not
> standards-compliant in this regard? Or I'm missing something?
I think malloc() should fail for such large requests because objects that big
don't satisfy the basic requirements on pointer arithmetic.
>From gcc-bugs-return-593592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 03:10:56 2018
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Subject: [Bug other/81831] -Wno-psabi is not documented
Date: Fri, 16 Feb 2018 03:22:00 -0000
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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> ---
Confirmed. The option is referred to by other options but it itself is not
documented as it should be.
$ grep -e Wpsabi -e Wno-psabi
gcc/doc/invoke.texi:you use the @option{-Wno-psabi} option.
gcc/doc/invoke.texi:you use the @option{-Wno-psabi} option.
gcc/doc/invoke.texi.orig:you use the @option{-Wno-psabi} option.
gcc/doc/invoke.texi.orig:you use the @option{-Wno-psabi} option.
>From gcc-bugs-return-593593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 03:22:19 2018
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Subject: [Bug c/67999] Wrong optimization of pointer comparisons
Date: Fri, 16 Feb 2018 03:24:00 -0000
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--- Comment #28 from Daniel Micay <danielmicay at gmail dot com> ---
I got jemalloc / Bionic libc (Android) to report errors for malloc and
mmap/mremap larger than PTRDIFF_MAX a while ago (along with fixing a missing
case for mremap in musl), but glibc needs to be convinced to do the same. It
would be a lot easier to convince them with this officially documented. I think
it's perfectly reasonable if it's clearly stated that objects larger than
PTRDIFF_MAX are not supported and that the libc implementation needs to deal
with it.
>From gcc-bugs-return-593594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 03:24:42 2018
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Subject: [Bug c++/81853] [ 6/7/8 Regression] "using namespace" is not a constant expression in a statement expression
Date: Fri, 16 Feb 2018 03:27:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |msebor at gcc dot gnu.org
Known to work| |4.5.4
Summary|[C++14] "using namespace" |[ 6/7/8 Regression] "using
|is not a constant |namespace" is not a
|expression in function-like |constant expression in a
|macro |statement expression
Ever confirmed|0 |1
Known to fail| |4.6.4, 4.7.4, 4.8.4, 4.9.4,
| |5.5.0, 6.4.0, 7.2.0, 8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the simplified test case below. GCC 4.5 compiles the test case
without a complaint so the failure is a regression introduced in r166167.
$ cat t.C && gcc -S -Wall -Wextra -Wpedantic t.C
namespace N {
enum { i };
}
int g ()
{
constexpr int j = ({ using namespace N; i; });
return j;
}
t.C: In function ‘int g()’:
t.C:7:21: warning: ISO C++ forbids braced-groups within expressions
[-Wpedantic]
constexpr int j = ({ using namespace N; i; });
^
t.C:7:40: error: statement is not a constant expression
constexpr int j = ({ using namespace N; i; });
^
>From gcc-bugs-return-593595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 03:27:56 2018
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Subject: [Bug c++/81930] [meta-bug] Issues with -Weffc++
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
One less unconfirmed bug.
>From gcc-bugs-return-593596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 04:39:12 2018
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Subject: [Bug c++/84415] New: Using __m128 as a template parameter causes warnings
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Bug ID: 84415
Summary: Using __m128 as a template parameter causes warnings
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Attempting to use one of the intrinsic x86 vector types like __m128 causes a
warning:
<source>:9:30: warning: ignoring attributes on template argument '__m128 {aka
__vector(4) float}' [-Wignored-attributes]
__m128 Purr(const Meow<__m128> &m)
^
This is really annoying in warnings-as-errors mode.
This doesn't happen for uint64x2_t on ARM or ARM64.
#include <xmmintrin.h>
template <typename T>
struct Meow
{
T x;
};
__m128 Purr(const Meow<__m128> &m)
{
return m.x;
}
>From gcc-bugs-return-593597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 05:47:55 2018
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Subject: [Bug tree-optimization/37239] peeling last iteration of a <= loop
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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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 Andrew Pinski from comment #5)
> https://gcc.gnu.org/ml/gcc-patches/2015-12/msg00253.html
This was approved with a minor nit fixed
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Subject: [Bug target/59833] ARM soft-float extendsfdf2 fails to quiet signaling NaN
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| |a/show_bug.cgi?id=56828
--- Comment #15 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #14)
> powerpc failure of floating-point extensions to quiet signaling NaNs
> (because loads implicitly extend from float to double in a way that's
> defined as bit-manipulation rather than a convertFormat operation) is bug
> 56828.
but bug 56828 was closed as INVALID...
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Subject: [Bug middle-end/70920] if ((intptr_t)ptr == 0) doesn't get simplified to if (ptr == 0)
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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 prathamesh3492 from comment #5)
> (In reply to mwahab from comment #4)
> > (In reply to prathamesh3492 from comment #3)
> > > Fixed on trunk.
> >
> > I think that this is the cause of a failure in gcc.dg/tree-ssa/pr22051-2.c
> > for arm-none-linux-gnueabihf and arm-none-eabi.
> >
> > With the patch, the scan-tree-dump match in the test file fails because the
> > conditional becomes
> > ----
> > if (q_2(D) != 0B)
> > ----
> > rather than the expected
> > ----
> > if (r_3 != 0)
> > ----
> >
> > The comment in the test file suggests that the optimization might be wrong.
> Sorry for the breakage.
> Patch posted for this case:
> https://gcc.gnu.org/ml/gcc-patches/2016-08/msg00246.html
>
> Thanks,
> Prathamesh
An updated version of this patch was approved.
>From gcc-bugs-return-593600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 07:56:53 2018
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Subject: [Bug c/84190] [7/8 Regression] double arithmetic on x86 no longer rounds to nearest
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 07:56:16 2018
New Revision: 257721
URL: https://gcc.gnu.org/viewcvs?rev=257721&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84190
* tree-ssa.c (non_rewritable_mem_ref_base): Do not touch
volatile accesses if the decl isn't volatile.
* g++.dg/torture/pr84190.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr84190.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c
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Subject: [Bug c/84190] [7/8 Regression] double arithmetic on x86 no longer rounds to nearest
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 07:57:56 2018
New Revision: 257722
URL: https://gcc.gnu.org/viewcvs?rev=257722&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84190
* tree-ssa.c (non_rewritable_mem_ref_base): Do not touch
volatile accesses if the decl isn't volatile.
* g++.dg/torture/pr84190.C: New testcase.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/torture/pr84190.C
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-ssa.c
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Subject: [Bug c/84190] [7/8 Regression] double arithmetic on x86 no longer rounds to nearest
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed then. Note the vector case is still "broken" but it didn't work before.
It's also harder to fix.
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Subject: [Bug tree-optimization/37239] peeling last iteration of a <= loop
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Last reconfirmed|2008-08-27 11:58:09 |2018-2-16
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
While hmmer is now split the testcase in this bug isn't. We do find some split
points but appearantly never split the loop.
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Subject: [Bug tree-optimization/84399] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/84399] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 16 Feb 2018 08:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84399
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 08:16:17 2018
New Revision: 257723
URL: https://gcc.gnu.org/viewcvs?rev=257723&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84399
* graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
For operands we can analyze at their definition make sure we can
analyze them at each use as well.
* gcc.dg/graphite/pr84399.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/graphite/pr84399.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/graphite-scop-detection.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/81443] [8 regression] build/genrecog.o: virtual memory exhausted: Cannot allocate memory
Date: Fri, 16 Feb 2018 08:21:00 -0000
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--- Comment #23 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Feb 16 08:20:32 2018
New Revision: 257724
URL: https://gcc.gnu.org/viewcvs?rev=257724&root=gcc&view=rev
Log:
PR rtl-optimization/81443
* rtlanal.c (num_sign_bit_copies1) <SUBREG>: Do not propagate results
from inner REGs to paradoxical SUBREGs.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/rtlanal.c
>From gcc-bugs-return-593607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 08:21:31 2018
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Subject: [Bug tree-optimization/84416] New: internal compiler error: in int_cst_value, at tree.c:11089
Date: Fri, 16 Feb 2018 08:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84416
Bug ID: 84416
Summary: internal compiler error: in int_cst_value, at
tree.c:11089
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Target Milestone: ---
It seems gcc version 5.4.1, version 6.3.0, version 7.2.0 also have similar
problems when complied with -O3. gcc version 4.8.5 is able to compile.
$gcc-trunk -v
gcc version 8.0.1 20180208 (experimental) [trunk revision 257504] (GCC)
Target: x86_64-pc-linux-gnu
Thread model: posix
$gcc-trunk -O3 -c abc.c
abc.c:1:8: warning: type defaults to ‘int’ in declaration of ‘a’
[-Wimplicit-int]
static a[];
^
abc.c:2:1: warning: data definition has no type or storage class
b;
^
abc.c:2:1: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
abc.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
fn1() {
^~~
abc.c: In function ‘fn1’:
abc.c:5:18: warning: integer constant is so large that it is unsigned
a[b] = a[b - 18446744073709551607];
^~~~~~~~~~~~~~~~~~~~
during GIMPLE pass: pcom
abc.c:3:1: internal compiler error: in int_cst_value, at tree.c:11089
fn1() {
^~~
0x6f687c int_cst_value(tree_node const*)
../../gcc/gcc/tree.c:11089
0x14fddab analyze_subscript_affine_affine
../../gcc/gcc/tree-data-ref.c:3609
0x1502ed4 analyze_siv_subscript
../../gcc/gcc/tree-data-ref.c:3926
0x1502ed4 analyze_overlapping_iterations
../../gcc/gcc/tree-data-ref.c:4156
0x1502ed4 subscript_dependence_tester_1
../../gcc/gcc/tree-data-ref.c:4697
0x1503427 subscript_dependence_tester_1
../../gcc/gcc/tree-data-ref.c:4693
0x1503427 subscript_dependence_tester
../../gcc/gcc/tree-data-ref.c:4747
0x1503427 compute_affine_dependence(data_dependence_relation*, loop*)
../../gcc/gcc/tree-data-ref.c:4806
0x1504fec compute_all_dependences(vec<data_reference*, va_heap, vl_ptr>,
vec<data_dependence_relation*, va_heap, vl_ptr>*, vec<loop*, va_heap, vl_ptr>,
bool)
../../gcc/gcc/tree-data-ref.c:4873
0x15057da compute_data_dependences_for_loop(loop*, bool, vec<loop*, va_heap,
vl_ptr>*, vec<data_reference*, va_heap, vl_ptr>*,
vec<data_dependence_relation*, va_heap, vl_ptr>*)
../../gcc/gcc/tree-data-ref.c:5272
0xd76d09 tree_predictive_commoning_loop
../../gcc/gcc/tree-predcom.c:3190
0xd79d5d tree_predictive_commoning()
../../gcc/gcc/tree-predcom.c:3312
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
$cat abc.c
static a[];
b;
fn1() {
for (;; b++)
a[b] = a[b - 18446744073709551607];
}
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Subject: [Bug rtl-optimization/81443] [8 regression] build/genrecog.o: virtual memory exhausted: Cannot allocate memory
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----------------------------------------------------------------------------
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--- Comment #24 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed on mainline too.
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 08:29:00 -0000
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--- Comment #43 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Wilco from comment #42)
> Cut down example:
>
> typedef struct { int x, y; } X;
>
> void f (X *p, int n)
> {
> for (int i = 0; i < n; i++)
> { p[i].x = i;
> p[i].y = i + 1;
> }
> }
Can't reproduce your assembler with -O3 -mcpu=cortex-a9 -mfpu=neon-fp16
[-fno-vect-cost-model] [-mthumb]
Without -fno-vect-cost-model we don't vectorize anything. With we only
SLP vectorize and that using V1SI vector types (huh).
For the loop case:
t.c:6:3: note: Build SLP for _3->x = i_15;
t.c:6:3: note: Build SLP for _3->y = _4;
t.c:6:3: note: vect_is_simple_use: operand i_15
t.c:6:3: note: def_stmt: i_15 = PHI <0(5), _4(6)>
t.c:6:3: note: type of def: induction
t.c:6:3: note: vect_is_simple_use: operand _4
t.c:6:3: note: def_stmt: _4 = i_15 + 1;
t.c:6:3: note: type of def: internal
t.c:6:3: note: Build SLP failed: different types
ok, known missed handling of SLP induction.
t.c:6:3: note: ==> examining statement: _3->x = i_15;
t.c:6:3: note: vect_is_simple_use: operand i_15
t.c:6:3: note: def_stmt: i_15 = PHI <0(5), _4(6)>
t.c:6:3: note: type of def: induction
t.c:6:3: note: no array mode for DI[2]
permutaion op not supported by target.
so we don't support intereaving either. Not sure why it talks about DI[2]
instead of SI[2].
>From gcc-bugs-return-593610-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 08:29:40 2018
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Subject: [Bug c++/84415] Using __m128 as a template parameter causes warnings
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. You can use -Wno-ignored-attributes to work around this issue.
I wonder why this isn't suppressed as coming from system headers though?
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Subject: [Bug testsuite/83791] Move tests to libgomp.c-c++-common
Date: Fri, 16 Feb 2018 08:34:00 -0000
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--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Approved here: https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00920.html .
Will commit in stage1.
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Subject: [Bug tree-optimization/84417] New: internal compiler error: verify_gimple failed
Date: Fri, 16 Feb 2018 08:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84417
Bug ID: 84417
Summary: internal compiler error: verify_gimple failed
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: shlei930 at gmail dot com
Target Milestone: ---
$gcc-trunk -v
gcc version 8.0.1 20180208 (experimental) [trunk revision 257504] (GCC)
Target: x86_64-pc-linux-gnu
Thread model: posix
$gcc-trunk -O3 -c abc.c
abc.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
fn1() {
^~~
abc.c: In function ‘fn1’:
abc.c:3:15: warning: initialization of ‘double *’ from incompatible pointer
type ‘__vector(1) double *’ [-Wincompatible-pointer-types]
double *a = &x;
^
abc.c:5:1: error: invalid position or size operand to BIT_FIELD_REF
}
^
BIT_FIELD_REF <x_7(D), 64, 0x54e373edd85ffffc0>
abc.c:4:8: note: in statement
*a + *(a + 8446744073709551615);
^~~~~~~~~~~~~~~~~~~~~~~~~~
_3 = BIT_FIELD_REF <x_7(D), 64, 0x54e373edd85ffffc0>;
during GIMPLE pass: ccp
abc.c:5:1: internal compiler error: verify_gimple failed
}
^
0xcf97e3 verify_gimple_in_cfg(function*, bool)
../../gcc/gcc/tree-cfg.c:5575
0xbd8d5f execute_function_todo
../../gcc/gcc/passes.c:1994
0xbd9cae execute_todo
../../gcc/gcc/passes.c:2048
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
$cat abc.c
fn1() {
__attribute__((__vector_size__(sizeof(double)))) double x;
double *a = &x;
*a + *(a + 8446744073709551615);
}
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Subject: [Bug c++/84414] miscompile due to assuming that object returned by value cannot alias its own member pointer values
Date: Fri, 16 Feb 2018 08:51:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |alias, wrong-code
CC| |rguenth at gcc dot gnu.org
Version|unknown |7.3.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the optimization wasn't done on purpose, it's simply an oversight if
permitted. Note that this has semantic impact on the interpretation of
GCCs const and pure function attributes as well ...
There's simply no code in points-to analysis that would handle the case of an
aggregate return value address escaping from the caller at the point
of the return from the callee.
The testcase is certainly "interesting". Do I see it correctly that the
guaranteed copy elision is to make (some) code effectively returning references
to local objects valid? If so that teaches people to write bad code :/
So I hope this testcase will be rectified as invalid!
>From gcc-bugs-return-593614-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 08:51:19 2018
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Subject: [Bug debug/84408] [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64
CC| |aoliva at gcc dot gnu.org
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Subject: [Bug middle-end/70920] if ((intptr_t)ptr == 0) doesn't get simplified to if (ptr == 0)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/84417] internal compiler error: verify_gimple failed
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-593617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 08:56:41 2018
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Subject: [Bug tree-optimization/84417] [8 Regression] internal compiler error: verify_gimple failed
Date: Fri, 16 Feb 2018 09:05:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Known to work| |7.3.1
Target Milestone|--- |8.0
Summary|internal compiler error: |[8 Regression] internal
|verify_gimple failed |compiler error:
| |verify_gimple failed
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Subject: [Bug rtl-optimization/83723] [8 Regression] ICE: in gen_rtx_SUBREG, at emit-rtl.c:1010
Date: Fri, 16 Feb 2018 09:06:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 09:04:00 2018
New Revision: 257725
URL: https://gcc.gnu.org/viewcvs?rev=257725&root=gcc&view=rev
Log:
PR rtl-optimization/83723
* lra-int.h (lra_substitute_pseudo): Add DEBUG_P argument.
* lra.c (lra_substitute_pseudo): Likewise. If true, use
gen_rtx_raw_SUBREG instead of gen_rtx_SUBREG. Pass DEBUG_P to
recursive calls.
(lra_substitute_pseudo_within_insn): Adjust lra_substitute_pseudo
callers.
* lra-constraints.c (inherit_reload_reg, split_reg): Likewise.
* gcc.dg/pr83723.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr83723.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/lra-int.h
trunk/gcc/lra.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
Date: Fri, 16 Feb 2018 09:09:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 09:05:35 2018
New Revision: 257726
URL: https://gcc.gnu.org/viewcvs?rev=257726&root=gcc&view=rev
Log:
PR bootstrap/84405
* system.h (BROKEN_VALUE_INITIALIZATION): Define for GCC < 4.3.
* vec.h (vec_default_construct): Use memset instead of placement new
if BROKEN_VALUE_INITIALIZATION is defined.
* hash-table.h (hash_table<Descriptor, Allocator>::empty_slow): Use
memset instead of value initialization if BROKEN_VALUE_INITIALIZATION
is defined.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/hash-table.h
trunk/gcc/system.h
trunk/gcc/vec.h
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Subject: [Bug rtl-optimization/83723] [8 Regression] ICE: in gen_rtx_SUBREG, at emit-rtl.c:1010
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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> ---
Fixed.
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Subject: [Bug bootstrap/84405] [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
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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> ---
Worked around (so far for < 4.4 other than 4.2.[0-3]) on the trunk.
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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Bug 82939 depends on bug 84405, which changed state.
Bug 84405 Summary: [8 Regression] Fails to bootstrap with GCC 4.1.2, GCC 4.2.4
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84405
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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Martin Liška <marxin at gcc dot gnu.org> changed:
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is obsolete| |
--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43439
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Parallel build of make all-host on 8 core Haswell machine
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
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Parallel build of make all-host on 128 core EPYC machine
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Subject: [Bug target/84272] [8 Regression] AddressSanitizer: heap-use-after-free ../../gcc/config/aarch64/cortex-a57-fma-steering.c:519 in fma_node::get_parity()
Date: Fri, 16 Feb 2018 09:29:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 09:26:27 2018
New Revision: 257727
URL: https://gcc.gnu.org/viewcvs?rev=257727&root=gcc&view=rev
Log:
PR target/84272
* config/aarch64/cortex-a57-fma-steering.c (fma_forest::merge_forest):
Use ++iter rather than iter++ for std::list iterators.
(func_fma_steering::dfs): Likewise. Don't delete nodes right away,
defer deleting them until all nodes in the forest are processed. Do
free even leaf nodes. Change to_process into auto_vec.
* g++.dg/opt/pr84272.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr84272.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/cortex-a57-fma-steering.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/84272] [8 Regression] AddressSanitizer: heap-use-after-free ../../gcc/config/aarch64/cortex-a57-fma-steering.c:519 in fma_node::get_parity()
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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> ---
Fixed.
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Subject: [Bug target/84406] [8 Regression][MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/64081] [6/7/8 Regression] r217827/8 prevents RTL loop unroll
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Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #63 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #62)
> (In reply to Jeffrey A. Law from comment #61)
> > Punting to gcc-8. The patch needs additional work and Aldy is poking at
> > something else at this point. The Aldy's analysis of the AIX issue should
> > allow this to be pushed forward in the gcc-8 development cycle.
>
> Same logic to punt to gcc-9 at this point?
I'm afraid so. Adjusting milestone.
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Subject: [Bug tree-optimization/84416] internal compiler error: in int_cst_value, at tree.c:11089
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |jsm28 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> ---
This is a very old known issue with the representation of the dependence
analysis
lambda vectors. It seems to be facilitated by us using __int128 for literals
automagically for a[b - 18446744073709551607] which in this context really
doesn't make sense.
Joseph, the C FE produces
a[b] = a[(__int128) b + -0xfffffffffffffff7];
but shouldn't array indices be restricted to at most ptrdiff_t / size_t? Is
the
FE the appropriate place to do that?
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Subject: [Bug fortran/84412] [7/8 Regression] Erroneous "Inquire statement identifies an internal file" error
Date: Fri, 16 Feb 2018 09:45:00 -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| |6.4.0
Keywords| |wrong-code
Last reconfirmed| |2018-02-16
CC| |jvdelisle at gcc dot gnu.org
Ever confirmed|0 |1
Summary|Erroneous "Inquire |[7/8 Regression] Erroneous
|statement identifies an |"Inquire statement
|internal file" error |identifies an internal
| |file" error
Known to fail| |7.3.0, 8.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed, revision r254940 is OK. Likely r254982 (pr78549).
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Subject: [Bug fortran/84418] New: ICE with fortran OpenMP linear (ref ()) clause
Date: Fri, 16 Feb 2018 09:46:00 -0000
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Bug ID: 84418
Summary: ICE with fortran OpenMP linear (ref ()) clause
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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real function foo (x, y)
real :: x, y
!$omp declare simd linear (ref (x, y))
foo = x + y
end function
ICEs with -fopenmp, because OMP_CLAUSE_LINEAR_STEP is a REAL_CST 1.0 rather
than INTEGER_CST sizeof pointer.
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Subject: [Bug fortran/84418] ICE with fortran OpenMP linear (ref ()) clause
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
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Ever confirmed|0 |1
Known to fail| |7.3.0, 8.0
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Subject: [Bug sanitizer/84307] asan blocks dead-store elimination
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Feb 16 10:03:47 2018
New Revision: 257729
URL: https://gcc.gnu.org/viewcvs?rev=257729&root=gcc&view=rev
Log:
Set proper internal functions fnspec (PR sanitizer/84307).
2018-02-16 Martin Liska <mliska@suse.cz>
PR sanitizer/84307
* internal-fn.def (ASAN_CHECK): Set proper flags.
(ASAN_MARK): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/internal-fn.def
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Subject: [Bug middle-end/70897] Confused branch predictors
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I've done various changes for GCC 8. There are still improvement possibilities,
but let me close this PR.
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Subject: [Bug target/84239] Reimplement rdssp[d|q] and incssp[d|q] CET intrinsics
Date: Fri, 16 Feb 2018 10:20:00 -0000
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--- Comment #3 from itsimbal at gcc dot gnu.org ---
Author: itsimbal
Date: Fri Feb 16 10:19:14 2018
New Revision: 257730
URL: https://gcc.gnu.org/viewcvs?rev=257730&root=gcc&view=rev
Log:
Additional fix for PR 84239.
PR target/84239
* libgcc/config/i386/shadow-stack-unwind.h (_Unwind_Frames_Extra):
Include cetintrin.h not x86intrin.h.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/config/i386/shadow-stack-unwind.h
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Subject: [Bug libgomp/82428] Builtins for openacc gang/worker/vector id/size
Date: Fri, 16 Feb 2018 10:24:00 -0000
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--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
Approved for stage1 here:
https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01576.html
Version to commit: https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01630.html
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/84419] New: [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Fri, 16 Feb 2018 10:25:00 -0000
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Bug ID: 84419
Summary: [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627,
554/654, 445, 454, 481, 416 runfails after r256628
with march=skylake-avx512
Product: gcc
Version: unknown
Status: UNCONFIRMED
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Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: alexander.nesterovskiy at intel dot com
Target Milestone: ---
There are runfails for the following benchmarks since r256628:
SPEC2017 fp-rate/fp-speed:
521/621
527/627
554/654
SPEC2006 int-speed:
445
SPEC2006 fp-rate/fp-speed:
454
481
416
Minimal optset to reproduce is "-O3 -march=skylake-avx512".
Reverting changes in tree-ssa-loop-ivopts.c fixes the problem in current
revisions (r257682 at least).
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Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Fri, 16 Feb 2018 10:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |8.0
Target Milestone|--- |8.0
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Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Fri, 16 Feb 2018 11:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target| |x86_64-*-*
Priority|P3 |P1
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-02-16
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I guess it's hard to fix/analyze without a machine to reproduce on (hey Intel -
please contribute to the CF!). So - can you narrow down the issue in one
benchmark to a specific file/function and/or provide a testcase please?
>From gcc-bugs-return-593640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 11:10:41 2018
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Subject: [Bug ipa/82278] [8 regression] gcc.dg/lto/chkp-ctor-merge fail
Date: Fri, 16 Feb 2018 11:24:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |9.0
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From: "benni.buch at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84420] New: [8 Regression] ICE when accessing a structured binding to a captured variable in a template
Date: Fri, 16 Feb 2018 11:28:00 -0000
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Bug ID: 84420
Summary: [8 Regression] ICE when accessing a structured binding
to a captured variable in a template
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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int main(){
int a[1]{};
[&a]{
auto [v] = a;
(void)v;
}();
}
$ g++ -std=c++17 main.cpp
main.cpp: In lambda function:
main.cpp:5:15: internal compiler error: in is_normal_capture_proxy, at
cp/lambda.c:288
(void)v;
^
0x5e3bf6 is_normal_capture_proxy(tree_node*)
../../gcc/gcc/cp/lambda.c:288
0x8a5578 is_lambda_ignored_entity(tree_node*)
../../gcc/gcc/cp/lambda.c:1291
0x8c16ef qualify_lookup
../../gcc/gcc/cp/name-lookup.c:5322
0x8cc483 lookup_name_real_1
../../gcc/gcc/cp/name-lookup.c:6015
0x8cc483 lookup_name_real(tree_node*, int, int, bool, int, int)
../../gcc/gcc/cp/name-lookup.c:6104
0x8d450b cp_parser_lookup_name
../../gcc/gcc/cp/parser.c:26103
0x8ee22a cp_parser_class_name
../../gcc/gcc/cp/parser.c:22326
0x8ee4e1 cp_parser_type_name
../../gcc/gcc/cp/parser.c:17318
0x8fc55b cp_parser_type_name
../../gcc/gcc/cp/parser.c:17306
0x8fc55b cp_parser_simple_type_specifier
../../gcc/gcc/cp/parser.c:17178
0x8fd647 cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:6945
0x8fe2b0 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x8de69f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x8de861 cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9038
0x8deeaa cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x8e0684 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x8e0d98 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x8e2a58 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:11112
0x8e8dcd cp_parser_statement
../../gcc/gcc/cp/parser.c:10916
0x8ea2e0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
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.
$ g++ --version
g++ (GCC) 8.0.1 20180216 (experimental)
Copyright (C) 2018 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.
>From gcc-bugs-return-593642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 11:28:42 2018
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From: "benni.buch at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 11:30:00 -0000
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--- Comment #1 from Benjamin Buch <benni.buch at gmail dot com> ---
Same with:
int main(){
[]{
int a[1]{};
auto [v] = a;
(void)v;
}();
}
$ g++ -std=c++17 main.cpp
main.cpp: In lambda function:
main.cpp:5:15: internal compiler error: in is_normal_capture_proxy, at
cp/lambda.c:288
(void)v;
^
0x5e3bf6 is_normal_capture_proxy(tree_node*)
../../gcc/gcc/cp/lambda.c:288
0x8a5578 is_lambda_ignored_entity(tree_node*)
../../gcc/gcc/cp/lambda.c:1291
0x8c16ef qualify_lookup
../../gcc/gcc/cp/name-lookup.c:5322
0x8cc483 lookup_name_real_1
../../gcc/gcc/cp/name-lookup.c:6015
0x8cc483 lookup_name_real(tree_node*, int, int, bool, int, int)
../../gcc/gcc/cp/name-lookup.c:6104
0x8d450b cp_parser_lookup_name
../../gcc/gcc/cp/parser.c:26103
0x8ee22a cp_parser_class_name
../../gcc/gcc/cp/parser.c:22326
0x8ee4e1 cp_parser_type_name
../../gcc/gcc/cp/parser.c:17318
0x8fc55b cp_parser_type_name
../../gcc/gcc/cp/parser.c:17306
0x8fc55b cp_parser_simple_type_specifier
../../gcc/gcc/cp/parser.c:17178
0x8fd647 cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:6945
0x8fe2b0 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x8de69f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x8de861 cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9038
0x8deeaa cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x8e0684 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x8e0d98 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x8e2a58 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:11112
0x8e8dcd cp_parser_statement
../../gcc/gcc/cp/parser.c:10916
0x8ea2e0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
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-593643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 11:30:48 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r253265.
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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++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 11:31:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |8.0
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
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sudi at gcc dot gnu.org changed:
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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Subject: [Bug fortran/84418] ICE with fortran OpenMP linear (ref ()) clause
Date: Fri, 16 Feb 2018 11:41:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43441
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43441&action=edit
gcc8-pr84418.patch
Untested fix.
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Subject: [Bug lto/82229] GCC7's LTO underperforms compared to GCC6
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #16 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm closing that as analysis is needed from side of the program. Feel free to
reopen if you analyze what's the runtime hog.
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Subject: [Bug tree-optimization/84417] [8 Regression] internal compiler error: verify_gimple failed
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 12:01:23 2018
New Revision: 257731
URL: https://gcc.gnu.org/viewcvs?rev=257731&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84417
* tree-ssa.c (non_rewritable_mem_ref_base): Properly constrain
the MEM_REF offset when conversion to BIT_FIELD_REF is desired.
(non_rewritable_lvalue_p): Likewise, use poly-ints.
* gcc.dg/torture/pr84417.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr84417.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c
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Subject: [Bug debug/84408] [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
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Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
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--- Comment #1 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Hi. Could you please attach poly-int-07_plugin.ii to make this easier to
reproduce on a cross build?
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 12:02:34 2018
New Revision: 257732
URL: https://gcc.gnu.org/viewcvs?rev=257732&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR bootstrap/82939
* line-map.c (linemap_init): Avoid broken value-init when compiling
with GCC 4.2.
Modified:
trunk/libcpp/ChangeLog
trunk/libcpp/line-map.c
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Subject: [Bug tree-optimization/84417] [8 Regression] internal compiler error: verify_gimple failed
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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> ---
Fixed.
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Subject: [Bug bootstrap/82939] genmatch fills up terminal with endless printing of periods
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug debug/84408] [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
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--- Comment #2 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Created attachment 43442
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43442&action=edit
preprocessed testcase
Nevermind, .ii file generated on gcc116.
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Subject: [Bug debug/84408] [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
Date: Fri, 16 Feb 2018 12:59:00 -0000
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--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
I can't reproduce on gcc116.fsffrance.org. The assembler completes in less
than a second for both -gno-inline-points and without.
aldyh@gcc116:~/bld/t/gcc$ ./xg++ -B. -g -O -fPIC -shared -fno-rtti -time
poly-int-07_plugin.ii
# cc1plus 107.13 0.29
# as 0.93 0.06
./xg++ -B. -g -O -fPIC -shared -fno-rtti -time poly-int-07_plugin.ii
-gno-inline-points
aldyh@gcc116:~/bld/t/gcc$ ./xg++ -B. -g -O -fPIC -shared -fno-rtti -time
poly-int-07_plugin.ii -gno-inline-points
# cc1plus 104.89 0.33
# as 0.91 0.05
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 13:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82518
--- Comment #44 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe -O3 -mcpu=cortex-a9 -mfpu=neon-fp16 -mfloat-abi=hard is needed.
With that I certainly see the #c42 loop vectorized.
On x86_64 we get in *.optimized:
<bb 5> [local count: 567644349]:
# vect_vec_iv_.4_33 = PHI <{ 0, 1, 2, 3, 4, 5, 6, 7 }(4),
vect_vec_iv_.4_34(5)>
# ivtmp.10_14 = PHI <ivtmp.10_85(4), ivtmp.10_23(5)>
vect_vec_iv_.4_34 = vect_vec_iv_.4_33 + { 8, 8, 8, 8, 8, 8, 8, 8 };
vect__4.5_36 = vect_vec_iv_.4_33 + { 1, 1, 1, 1, 1, 1, 1, 1 };
vect_inter_high_39 = VEC_PERM_EXPR <vect_vec_iv_.4_33, vect__4.5_36, { 0, 8,
1, 9, 2, 10, 3, 11 }>;
vect_inter_low_40 = VEC_PERM_EXPR <vect_vec_iv_.4_33, vect__4.5_36, { 4, 12,
5, 13, 6, 14, 7, 15 }>;
_86 = (void *) ivtmp.10_14;
MEM[base: _86, offset: 0B] = vect_inter_high_39;
MEM[base: _86, offset: 32B] = vect_inter_low_40;
ivtmp.10_23 = ivtmp.10_14 + 64;
if (ivtmp.10_23 != _90)
goto <bb 5>; [83.33%]
else
goto <bb 6>; [16.67%]
which doesn't look optimal either, in this case I'd say better would be to have
two IVs bumped by { 8, ... 8 } in each iteration, one starting with
{ 0, 1, 1, 2, 2, 3, 3, 4 } and another with
{ 4, 5, 5, 6, 6, 7, 7, 8 } or just one and add { 4, ... 4 }; to it for the
second store and avoid both VEC_PERM_EXPRs in that case.
On armeb with the above options I see:
<bb 5> [local count: 504572758]:
# vect_vec_iv_.7_45 = PHI <{ 0, 1, 2, 3 }(4), vect_vec_iv_.7_46(5)>
# ivtmp.31_128 = PHI <ivtmp.31_130(4), ivtmp.31_129(5)>
vectp_p.9_49 = (int[8] *) ivtmp.31_128;
vect_vec_iv_.7_46 = vect_vec_iv_.7_45 + { 4, 4, 4, 4 };
vect__4.8_48 = vect_vec_iv_.7_45 + { 1, 1, 1, 1 };
vect_array.11[0] = vect_vec_iv_.7_45;
vect_array.11[1] = vect__4.8_48;
MEM[(int *)vectp_p.9_49] = STORE_LANES (vect_array.11);
ivtmp.31_129 = ivtmp.31_128 + 32;
if (ivtmp.31_129 != _133)
goto <bb 5>; [83.33%]
else
goto <bb 6>; [16.67%]
which looks wrong to me (because vect_vec_iv_.7_45 and vect__4.8_48 really
should be interleaved when stored into MEM[(int *)vectp_p.9_49]), but I really
don't know what exactly the STORE_LANES does.
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 13:22:00 -0000
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--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note the vectorized loop is pretty much the same on arm little-endian,
# vect_vec_iv_.6_33 = PHI <{ 0, 1, 2, 3 }(4), vect_vec_iv_.6_34(5)>
# ivtmp.12_14 = PHI <ivtmp.12_51(4), ivtmp.12_23(5)>
vectp_p.8_37 = (int[8] *) ivtmp.12_14;
vect_vec_iv_.6_34 = vect_vec_iv_.6_33 + { 4, 4, 4, 4 };
vect__4.7_36 = vect_vec_iv_.6_33 + { 1, 1, 1, 1 };
vect_array.10[0] = vect_vec_iv_.6_33;
vect_array.10[1] = vect__4.7_36;
MEM[(int *)vectp_p.8_37] = STORE_LANES (vect_array.10);
ivtmp.12_23 = ivtmp.12_14 + 32;
if (ivtmp.12_23 != _54)
goto <bb 5>; [83.33%]
else
goto <bb 6>; [16.67%]
for which we emit:
vmov.i32 q12, #4 @ v4si
vmov.i32 q9, #1 @ v4si
...
vldr d16, .L13
vldr d17, .L13+8
.L4:
vmov q10, q8 @ v4si
vadd.i32 q11, q8, q9
vadd.i32 q8, q8, q12
vst2.32 {d20-d23}, [r3]!
cmp r3, r2
bne .L4
vst2.32 seems to be documented to do 32-bit interleaving, so if qN registers
overlap d{2*N} and d{2*N+1} registers, I guess this does the right thing.
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 13:28:00 -0000
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--- Comment #46 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Wonder if that:
vect_array.11[0] = vect_vec_iv_.7_45;
vect_array.11[1] = vect__4.8_48;
on armeb shouldn't have been [1] and [0] instead, otherwise we end up with:
(insn 35 37 38 5 (set (subreg:V4SI (reg:OI 155 [ vect_array.11 ]) 0)
(reg:V4SI 110 [ vect_vec_iv_.7 ])) "pr82518.c":8 939 {*neon_movv4si}
(nil))
(insn 38 35 41 5 (set (subreg:V4SI (reg:OI 155 [ vect_array.11 ]) 16)
(plus:V4SI (reg:V4SI 110 [ vect_vec_iv_.7 ])
(reg:V4SI 171))) "pr82518.c":8 998 {*addv4si3_neon}
(nil))
(insn 41 38 39 5 (set (reg:V4SI 110 [ vect_vec_iv_.7 ])
(plus:V4SI (reg:V4SI 110 [ vect_vec_iv_.7 ])
(reg:V4SI 169))) 998 {*addv4si3_neon}
(nil))
(insn 39 41 43 5 (set (mem:OI (post_inc:SI (reg:SI 152 [ ivtmp.31 ])) [2
MEM[(int *)vectp_p.9_49]+0 S32 A32])
(unspec:OI [
(reg:OI 155 [ vect_array.11 ])
(unspec:V4SI [
(const_int 0 [0])
] UNSPEC_VSTRUCTDUMMY)
] UNSPEC_VST2)) "pr82518.c":8 2396 {neon_vst2v4si}
(expr_list:REG_INC (reg:SI 152 [ ivtmp.31 ])
(nil)))
where pseudo 110 is the vect_vec_iv_.7_45 ({i, i + 1, i + 2, i + 3}) and
insn 38 adds {1, 1, 1, 1} to that. It really depends on what exactly the
neon_vst2v4si instruction does on armeb.
vmov.i32 q10, #4 @ v4si
vmov.i32 q9, #1 @ v4si
...
vldr d16, .L19
vldr d17, .L19+8
.L4:
vadd.i32 q11, q8, q9
vst1.64 {d16-d17}, [sp:64]
vadd.i32 q8, q8, q10
vstr d22, [sp, #16]
vstr d23, [sp, #24]
vld1.64 {d22-d25}, [sp:64]
vst2.32 {d22-d25}, [r3]!
If it works like on armel, except the elements of the vectors are byte-swapped,
then it should be [1] and [0].
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Subject: [Bug c++/84286] [8 Regression] Segmentation fault of a chromium binary
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Good, building the problem with -O0, I see very many -Wabi warnings:
https://pastebin.com/bZFRJycS
That can probably explain why it fails, right?
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Subject: [Bug c++/16166] -Weffc++ finer granularity
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Created attachment 43443
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Patch to split -Weffc++ into separate options.
This adds several new warning options to replace -Weffc++, and makes -Weffc++
enable them all.
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Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 13:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82518
--- Comment #47 from Wilco <wilco.dijkstra at arm dot com> ---
(In reply to Jakub Jelinek from comment #46)
> Wonder if that:
> vect_array.11[0] = vect_vec_iv_.7_45;
> vect_array.11[1] = vect__4.8_48;
> on armeb shouldn't have been [1] and [0] instead, otherwise we end up with:
> (insn 35 37 38 5 (set (subreg:V4SI (reg:OI 155 [ vect_array.11 ]) 0)
> (reg:V4SI 110 [ vect_vec_iv_.7 ])) "pr82518.c":8 939 {*neon_movv4si}
> (nil))
> (insn 38 35 41 5 (set (subreg:V4SI (reg:OI 155 [ vect_array.11 ]) 16)
> (plus:V4SI (reg:V4SI 110 [ vect_vec_iv_.7 ])
> (reg:V4SI 171))) "pr82518.c":8 998 {*addv4si3_neon}
> (nil))
> (insn 41 38 39 5 (set (reg:V4SI 110 [ vect_vec_iv_.7 ])
> (plus:V4SI (reg:V4SI 110 [ vect_vec_iv_.7 ])
> (reg:V4SI 169))) 998 {*addv4si3_neon}
> (nil))
> (insn 39 41 43 5 (set (mem:OI (post_inc:SI (reg:SI 152 [ ivtmp.31 ])) [2
> MEM[(int *)vectp_p.9_49]+0 S32 A32])
> (unspec:OI [
> (reg:OI 155 [ vect_array.11 ])
> (unspec:V4SI [
> (const_int 0 [0])
> ] UNSPEC_VSTRUCTDUMMY)
> ] UNSPEC_VST2)) "pr82518.c":8 2396 {neon_vst2v4si}
> (expr_list:REG_INC (reg:SI 152 [ ivtmp.31 ])
> (nil)))
> where pseudo 110 is the vect_vec_iv_.7_45 ({i, i + 1, i + 2, i + 3}) and
> insn 38 adds {1, 1, 1, 1} to that. It really depends on what exactly the
> neon_vst2v4si instruction does on armeb.
> vmov.i32 q10, #4 @ v4si
> vmov.i32 q9, #1 @ v4si
> ...
> vldr d16, .L19
> vldr d17, .L19+8
> .L4:
> vadd.i32 q11, q8, q9
> vst1.64 {d16-d17}, [sp:64]
> vadd.i32 q8, q8, q10
> vstr d22, [sp, #16]
> vstr d23, [sp, #24]
> vld1.64 {d22-d25}, [sp:64]
> vst2.32 {d22-d25}, [r3]!
> If it works like on armel, except the elements of the vectors are
> byte-swapped, then it should be [1] and [0].
The vst2 works on little endian, but in big-endian the lane numbering is
complex since all data is still treated as 64-bit quantities.
The stores and vld1.64 have no effect on data layout, so everything is still
64-bit data in 64-bit registers. The vst2.32 can only be used in big-endian if
the data is lane-swapped first. AArch64 in big-endian does this:
.L26:
mov v2.16b, v0.16b
add v3.4s, v0.4s, v6.4s
add v0.4s, v0.4s, v7.4s
tbl v4.16b, {v2.16b}, v1.16b
tbl v5.16b, {v3.16b}, v1.16b
st2 {v4.4s - v5.4s}, [x2], 32
cmp x2, x3
bne .L26
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Subject: [Bug tree-optimization/84037] [8 Regression] Speed regression of polyhedron benchmark since r256644
Date: Fri, 16 Feb 2018 13:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #32 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/84016] [8 Regression] Spec2000 regression around Jan 14 and Jan 19 2018
Date: Fri, 16 Feb 2018 13:48:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 13:47:25 2018
New Revision: 257734
URL: https://gcc.gnu.org/viewcvs?rev=257734&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84037
PR tree-optimization/84016
PR target/82862
* config/i386/i386.c (ix86_builtin_vectorization_cost):
Adjust vec_construct for the fact we need additional higher latency
128bit inserts for AVX256 and AVX512 vector builds.
(ix86_add_stmt_cost): Scale vector construction cost for
elementwise loads.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
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Subject: [Bug tree-optimization/84037] [8 Regression] Speed regression of polyhedron benchmark since r256644
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--- Comment #33 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 13:47:25 2018
New Revision: 257734
URL: https://gcc.gnu.org/viewcvs?rev=257734&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84037
PR tree-optimization/84016
PR target/82862
* config/i386/i386.c (ix86_builtin_vectorization_cost):
Adjust vec_construct for the fact we need additional higher latency
128bit inserts for AVX256 and AVX512 vector builds.
(ix86_add_stmt_cost): Scale vector construction cost for
elementwise loads.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
The gamess regression mentioned should be fixed.
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Subject: [Bug target/82862] [8 Regression] SPEC CPU2006 465.tonto performance regression with r253975 (up to 40% drop for particular loop)
Date: Fri, 16 Feb 2018 13:49:00 -0000
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 16 13:47:25 2018
New Revision: 257734
URL: https://gcc.gnu.org/viewcvs?rev=257734&root=gcc&view=rev
Log:
2018-02-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/84037
PR tree-optimization/84016
PR target/82862
* config/i386/i386.c (ix86_builtin_vectorization_cost):
Adjust vec_construct for the fact we need additional higher latency
128bit inserts for AVX256 and AVX512 vector builds.
(ix86_add_stmt_cost): Scale vector construction cost for
elementwise loads.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
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Subject: [Bug target/82862] [8 Regression] SPEC CPU2006 465.tonto performance regression with r253975 (up to 40% drop for particular loop)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Possibly fixed now. Can you verify?
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Subject: [Bug c++/82764] [7/8 Regression] ICE in output_constructor_regular_field, at varasm.c:5030
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----------------------------------------------------------------------------
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 13:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84420
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83831] [RX] Unused bclr,bnot,bset insns
Date: Fri, 16 Feb 2018 13:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83831
--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Fri Feb 16 13:52:49 2018
New Revision: 257735
URL: https://gcc.gnu.org/viewcvs?rev=257735&root=gcc&view=rev
Log:
gcc/
PR target/83831
* config/rx/rx.c (rx_fuse_in_memory_bitop): Convert shift operand
to QImode.
gcc/testsuite/
PR target/83831
* gcc.target/rx/pr83831.c (test_3, test_6): Adjust test cases.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rx/rx.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/rx/pr83831.c
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From: "benni.buch at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84421] New: [8 Regression] Lambda parameter is no longer a core constant expressions
Date: Fri, 16 Feb 2018 14:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84421
Bug ID: 84421
Summary: [8 Regression] Lambda parameter is no longer a core
constant expressions
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: benni.buch at gmail dot com
Target Milestone: ---
struct A{
constexpr operator bool()const{ return true; }
};
int main(){
auto f = [](auto v){ if constexpr(v){} };
A a;
f(a);
}
$ g++ -std=c++17 main.cpp
main.cpp: In lambda function:
main.cpp:6:40: error: 'v' is not a constant expression
auto f = [](auto v){ if constexpr(v){} };
^
$ g++ --version
g++ (GCC) 8.0.1 20180216 (experimental)
Copyright (C) 2018 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.
Known to work with GCC-7:
$ g++-7 --version
g++ (GCC) 7.3.1 20180216
Copyright (C) 2017 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.
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
Date: Fri, 16 Feb 2018 14:02:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |8.0
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r255390.
>From gcc-bugs-return-593674-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 14:02:31 2018
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Fri, 16 Feb 2018 14:02:00 -0000
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--- Comment #2 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
I've made a quite small reproducer:
---
$ cat reproducer.c
#include <stdio.h>
#include <string.h>
#define SIZE 400
int foo[SIZE];
char bar[SIZE];
void __attribute__ ((noinline)) foo_func(void)
{
int i;
for (i = 1; i < SIZE; i++)
if (bar[i])
foo[i] = 1;
}
int main()
{
memset(bar, 1, sizeof(bar));
foo_func();
return 0;
}
$ gcc -O3 -march=skylake-avx512 -g reproducer.c
$ ./a.out
Segmentation fault (core dumped)
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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/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 14:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
--- Comment #48 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can someone familiar with ARM please take this over? Either this is a backend
bug, or a bug in the vectorizer part specific to only ARM/AArch64 (no other
target has STORE_LANES stuff). This is a P1 (for now), so it would be nice to
get it resolved soon.
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Subject: [Bug c++/84045] [7 Regression] ICE when is_nothrow_default_constructible is used before #include<set>
Date: Fri, 16 Feb 2018 14:13:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 14:12:42 2018
New Revision: 257737
URL: https://gcc.gnu.org/viewcvs?rev=257737&root=gcc&view=rev
Log:
PR c++/84045 - ICE with typedef and noexcept.
* except.c (build_noexcept_spec): Use strip_typedefs_expr.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/noexcept32.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/except.c
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/83227] [7 Regression] internal compiler error: in process_init_constructor_array
Date: Fri, 16 Feb 2018 14:13:00 -0000
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 14:12:48 2018
New Revision: 257738
URL: https://gcc.gnu.org/viewcvs?rev=257738&root=gcc&view=rev
Log:
PR c++/83227 - C++17 ICE with init-list derived-to-base conversion.
* call.c (convert_like_real): Don't use the copy-list-initialization
shortcut for ck_base.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/initlist98.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/call.c
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84286] [8 Regression] Segmentation fault of a chromium binary
Date: Fri, 16 Feb 2018 14:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84286
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-02-16
Ever confirmed|0 |1
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
With -O0 I see:
marxin@marxinbox:~/Programming/osc/ibs/home:marxin:gcc8-incubator/chromium/chromium-64.0.3282.140>
val ./out/Release/gn gen out/Release
==7339== Memcheck, a memory error detector
==7339== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==7339== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==7339== Command: ./out/Release/gn gen out/Release
==7339==
==7339== Invalid read of size 8
==7339== at 0x4C34E2C: memmove (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7339== by 0x4F0CB5: void std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*,
char*, std::forward_iterator_tag) (basic_string.tcc:225)
==7339== by 0x5E4D6C: SourceFile::SourceFile(SourceFile const&)
(source_file.h:22)
==7339== by 0x6156F2: std::_Head_base<3ul, SourceFile,
false>::_Head_base(SourceFile const&) (tuple:126)
==7339== by 0x6155C8: std::_Tuple_impl<3ul, SourceFile,
InputFile*>::_Tuple_impl<SourceFile const&, InputFile*, void>(SourceFile
const&, InputFile*&&) (tuple:218)
==7339== by 0x615361: std::_Tuple_impl<2ul, BuildSettings const*,
SourceFile, InputFile*>::_Tuple_impl<BuildSettings const*&, SourceFile const&,
InputFile*, void>(BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:218)
==7339== by 0x615029: std::_Tuple_impl<1ul, LocationRange, BuildSettings
const*, SourceFile, InputFile*>::_Tuple_impl<LocationRange const&,
BuildSettings const*&, SourceFile const&, InputFile*, void>(LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&) (tuple:218)
==7339== by 0x614AE7: std::_Tuple_impl<0ul, scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile,
InputFile*>::_Tuple_impl<InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*, void>(InputFileManager*&&,
LocationRange const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:218)
==7339== by 0x6140B7: std::tuple<scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile,
InputFile*>::tuple<InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*, true>(InputFileManager*&&,
LocationRange const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:647)
==7339== by 0x6132D1: base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>(std::integral_constant<bool, false>,
void (*)(), void (InputFileManager::*&&)(LocationRange const&, BuildSettings
const*, SourceFile const&, InputFile*), InputFileManager*&&, LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(bind_internal.h:467)
==7339== by 0x6123C9: base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>(void (*)(), void
(InputFileManager::*&&)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*&&, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*&&) (bind_internal.h:440)
==7339== by 0x6116AC:
base::RepeatingCallback<base::internal::BindTypeHelper<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>::UnboundRunType>
base::BindRepeating<void (InputFileManager::*)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*), InputFileManager*,
LocationRange const&, BuildSettings const*&, SourceFile const&,
InputFile*>(void (InputFileManager::*&&)(LocationRange const&, BuildSettings
const*, SourceFile const&, InputFile*), InputFileManager*&&, LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&) (bind.h:230)
==7339== Address 0x6511038 is 8 bytes before a block of size 101,873,569
alloc'd
==7339== at 0x4C2E6FF: operator new(unsigned long) (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7339== by 0x4F0C6E: void std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*,
char*, std::forward_iterator_tag) (basic_string.tcc:219)
==7339== by 0x5E4D6C: SourceFile::SourceFile(SourceFile const&)
(source_file.h:22)
==7339== by 0x6156F2: std::_Head_base<3ul, SourceFile,
false>::_Head_base(SourceFile const&) (tuple:126)
==7339== by 0x6155C8: std::_Tuple_impl<3ul, SourceFile,
InputFile*>::_Tuple_impl<SourceFile const&, InputFile*, void>(SourceFile
const&, InputFile*&&) (tuple:218)
==7339== by 0x615361: std::_Tuple_impl<2ul, BuildSettings const*,
SourceFile, InputFile*>::_Tuple_impl<BuildSettings const*&, SourceFile const&,
InputFile*, void>(BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:218)
==7339== by 0x615029: std::_Tuple_impl<1ul, LocationRange, BuildSettings
const*, SourceFile, InputFile*>::_Tuple_impl<LocationRange const&,
BuildSettings const*&, SourceFile const&, InputFile*, void>(LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&) (tuple:218)
==7339== by 0x614AE7: std::_Tuple_impl<0ul, scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile,
InputFile*>::_Tuple_impl<InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*, void>(InputFileManager*&&,
LocationRange const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:218)
==7339== by 0x6140B7: std::tuple<scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile,
InputFile*>::tuple<InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*, true>(InputFileManager*&&,
LocationRange const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(tuple:647)
==7339== by 0x6132D1: base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>(std::integral_constant<bool, false>,
void (*)(), void (InputFileManager::*&&)(LocationRange const&, BuildSettings
const*, SourceFile const&, InputFile*), InputFileManager*&&, LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&)
(bind_internal.h:467)
==7339== by 0x6123C9: base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>(void (*)(), void
(InputFileManager::*&&)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*&&, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*&&) (bind_internal.h:440)
==7339== by 0x6116AC:
base::RepeatingCallback<base::internal::BindTypeHelper<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), InputFileManager*, LocationRange const&, BuildSettings
const*&, SourceFile const&, InputFile*>::UnboundRunType>
base::BindRepeating<void (InputFileManager::*)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*), InputFileManager*,
LocationRange const&, BuildSettings const*&, SourceFile const&,
InputFile*>(void (InputFileManager::*&&)(LocationRange const&, BuildSettings
const*, SourceFile const&, InputFile*), InputFileManager*&&, LocationRange
const&, BuildSettings const*&, SourceFile const&, InputFile*&&) (bind.h:230)
==7339==
==7339== Thread 2 worker_Worker1/7:
==7339== Invalid write of size 1
==7339== at 0x537336F: assign (char_traits.h:285)
==7339== by 0x537336F: _M_set_length (basic_string.h:206)
==7339== by 0x537336F: std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >::clear() (basic_string.h:1005)
==7339== by 0x57F920: base::ReadFileToStringWithMaxSize(base::FilePath
const&, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >*, unsigned long) (file_util.cc:131)
==7339== by 0x57FAAD: base::ReadFileToString(base::FilePath const&,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>*) (file_util.cc:165)
==7339== by 0x66FA05: InputFile::Load(base::FilePath const&)
(input_file.cc:23)
==7339== by 0x60ECC3: (anonymous namespace)::DoLoadFile(LocationRange
const&, BuildSettings const*, SourceFile const&, InputFile*, std::vector<Token,
std::allocator<Token> >*, std::unique_ptr<ParseNode,
std::default_delete<ParseNode> >*, Err*) (input_file_manager.cc:45)
==7339== by 0x60FE7D: InputFileManager::LoadFile(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*, Err*)
(input_file_manager.cc:275)
==7339== by 0x60FDB6: InputFileManager::BackgroundLoadFile(LocationRange
const&, BuildSettings const*, SourceFile const&, InputFile*)
(input_file_manager.cc:264)
==7339== by 0x614A5E: void base::internal::FunctorTraits<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), void>::Invoke<scoped_refptr<InputFileManager> const&,
LocationRange const&, BuildSettings const* const&, SourceFile const&,
InputFile* const&>(void (InputFileManager::*)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
scoped_refptr<InputFileManager> const&, LocationRange const&, BuildSettings
const* const&, SourceFile const&, InputFile* const&) (bind_internal.h:194)
==7339== by 0x613FE3: void base::internal::InvokeHelper<false,
void>::MakeItSo<void (InputFileManager::* const&)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
scoped_refptr<InputFileManager> const&, LocationRange const&, BuildSettings
const* const&, SourceFile const&, InputFile* const&>(void (InputFileManager::*
const&)(LocationRange const&, BuildSettings const*, SourceFile const&,
InputFile*), scoped_refptr<InputFileManager> const&, LocationRange const&,
BuildSettings const* const&, SourceFile const&, InputFile* const&)
(bind_internal.h:277)
==7339== by 0x6130F5: void
base::internal::Invoker<base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>, void ()>::RunImpl<void
(InputFileManager::* const&)(LocationRange const&, BuildSettings const*,
SourceFile const&, InputFile*), std::tuple<scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile, InputFile*> const&, 0ul, 1ul,
2ul, 3ul, 4ul>(void (InputFileManager::* const&)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
std::tuple<scoped_refptr<InputFileManager>, LocationRange, BuildSettings
const*, SourceFile, InputFile*> const&, std::integer_sequence<unsigned long,
0ul, 1ul, 2ul, 3ul, 4ul>) (bind_internal.h:351)
==7339== by 0x612329: base::internal::Invoker<base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>, void
()>::Run(base::internal::BindStateBase*) (bind_internal.h:333)
==7339== by 0x40C6EB: base::RepeatingCallback<void ()>::Run() const &
(callback.h:94)
==7339== Address 0x5b is not stack'd, malloc'd or (recently) free'd
==7339==
==7339==
==7339== Process terminating with default action of signal 11 (SIGSEGV):
dumping core
==7339== Access not within mapped region at address 0x5B
==7339== at 0x537336F: assign (char_traits.h:285)
==7339== by 0x537336F: _M_set_length (basic_string.h:206)
==7339== by 0x537336F: std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >::clear() (basic_string.h:1005)
==7339== by 0x57F920: base::ReadFileToStringWithMaxSize(base::FilePath
const&, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >*, unsigned long) (file_util.cc:131)
==7339== by 0x57FAAD: base::ReadFileToString(base::FilePath const&,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>*) (file_util.cc:165)
==7339== by 0x66FA05: InputFile::Load(base::FilePath const&)
(input_file.cc:23)
==7339== by 0x60ECC3: (anonymous namespace)::DoLoadFile(LocationRange
const&, BuildSettings const*, SourceFile const&, InputFile*, std::vector<Token,
std::allocator<Token> >*, std::unique_ptr<ParseNode,
std::default_delete<ParseNode> >*, Err*) (input_file_manager.cc:45)
==7339== by 0x60FE7D: InputFileManager::LoadFile(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*, Err*)
(input_file_manager.cc:275)
==7339== by 0x60FDB6: InputFileManager::BackgroundLoadFile(LocationRange
const&, BuildSettings const*, SourceFile const&, InputFile*)
(input_file_manager.cc:264)
==7339== by 0x614A5E: void base::internal::FunctorTraits<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), void>::Invoke<scoped_refptr<InputFileManager> const&,
LocationRange const&, BuildSettings const* const&, SourceFile const&,
InputFile* const&>(void (InputFileManager::*)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
scoped_refptr<InputFileManager> const&, LocationRange const&, BuildSettings
const* const&, SourceFile const&, InputFile* const&) (bind_internal.h:194)
==7339== by 0x613FE3: void base::internal::InvokeHelper<false,
void>::MakeItSo<void (InputFileManager::* const&)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
scoped_refptr<InputFileManager> const&, LocationRange const&, BuildSettings
const* const&, SourceFile const&, InputFile* const&>(void (InputFileManager::*
const&)(LocationRange const&, BuildSettings const*, SourceFile const&,
InputFile*), scoped_refptr<InputFileManager> const&, LocationRange const&,
BuildSettings const* const&, SourceFile const&, InputFile* const&)
(bind_internal.h:277)
==7339== by 0x6130F5: void
base::internal::Invoker<base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>, void ()>::RunImpl<void
(InputFileManager::* const&)(LocationRange const&, BuildSettings const*,
SourceFile const&, InputFile*), std::tuple<scoped_refptr<InputFileManager>,
LocationRange, BuildSettings const*, SourceFile, InputFile*> const&, 0ul, 1ul,
2ul, 3ul, 4ul>(void (InputFileManager::* const&)(LocationRange const&,
BuildSettings const*, SourceFile const&, InputFile*),
std::tuple<scoped_refptr<InputFileManager>, LocationRange, BuildSettings
const*, SourceFile, InputFile*> const&, std::integer_sequence<unsigned long,
0ul, 1ul, 2ul, 3ul, 4ul>) (bind_internal.h:351)
==7339== by 0x612329: base::internal::Invoker<base::internal::BindState<void
(InputFileManager::*)(LocationRange const&, BuildSettings const*, SourceFile
const&, InputFile*), scoped_refptr<InputFileManager>, LocationRange,
BuildSettings const*, SourceFile, InputFile*>, void
()>::Run(base::internal::BindStateBase*) (bind_internal.h:333)
==7339== by 0x40C6EB: base::RepeatingCallback<void ()>::Run() const &
(callback.h:94)
==7339== If you believe this happened as a result of a stack
==7339== overflow in your program's main thread (unlikely but
==7339== possible), you can try to increase the size of the
==7339== main thread stack using the --main-stacksize= flag.
==7339== The main thread stack size used in this run was 8388608.
==7339==
==7339== HEAP SUMMARY:
==7339== in use at exit: 102,029,864 bytes in 670 blocks
==7339== total heap usage: 1,218 allocs, 548 frees, 408,079,140 bytes
allocated
==7339==
==7339== Thread 1:
==7339== 288 bytes in 1 blocks are possibly lost in loss record 155 of 207
==7339== at 0x4C300A5: calloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7339== by 0x4012361: allocate_dtv (in /lib64/ld-2.26.so)
==7339== by 0x4012CED: _dl_allocate_tls (in /lib64/ld-2.26.so)
==7339== by 0x5B4114C: pthread_create@@GLIBC_2.2.5 (in
/lib64/libpthread-2.26.so)
==7339== by 0x47562A: base::(anonymous namespace)::CreateThread(unsigned
long, bool, base::PlatformThread::Delegate*, base::PlatformThreadHandle*,
base::ThreadPriority) (platform_thread_posix.cc:114)
==7339== by 0x4758C9: base::PlatformThread::CreateWithPriority(unsigned
long, base::PlatformThread::Delegate*, base::PlatformThreadHandle*,
base::ThreadPriority) (platform_thread_posix.cc:199)
==7339== by 0x440C57: base::SimpleThread::Start() (simple_thread.cc:34)
==7339== by 0x432878:
base::SequencedWorkerPool::Worker::Worker(scoped_refptr<base::SequencedWorkerPool>,
int, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&) (sequenced_worker_pool.cc:577)
==7339== by 0x43668B:
base::SequencedWorkerPool::Inner::FinishStartingAdditionalThread(int)
(sequenced_worker_pool.cc:1376)
==7339== by 0x4339FD:
base::SequencedWorkerPool::Inner::PostTask(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const*,
base::SequencedWorkerPool::SequenceToken,
base::SequencedWorkerPool::WorkerShutdown, base::Location const&,
base::OnceCallback<void ()>, base::TimeDelta) (sequenced_worker_pool.cc:763)
==7339== by 0x436F46:
base::SequencedWorkerPool::PostWorkerTaskWithShutdownBehavior(base::Location
const&, base::OnceCallback<void ()>, base::SequencedWorkerPool::WorkerShutdown)
(sequenced_worker_pool.cc:1524)
==7339== by 0x6B31F5: Scheduler::ScheduleWork(base::RepeatingCallback<void
()> const&) (scheduler.cc:136)
==7339==
==7339== LEAK SUMMARY:
==7339== definitely lost: 0 bytes in 0 blocks
==7339== indirectly lost: 0 bytes in 0 blocks
==7339== possibly lost: 288 bytes in 1 blocks
==7339== still reachable: 102,029,576 bytes in 669 blocks
==7339== suppressed: 0 bytes in 0 blocks
==7339== Reachable blocks (those to which a pointer was found) are not shown.
==7339== To see them, rerun with: --leak-check=full --show-leak-kinds=all
Thus probably caused by the Wabi. Marek?
>From gcc-bugs-return-593678-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 14:13:46 2018
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84045] [7 Regression] ICE when is_nothrow_default_constructible is used before #include<set>
Date: Fri, 16 Feb 2018 14:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84045
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-593679-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 14:14:20 2018
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Subject: [Bug c++/83227] [7 Regression] internal compiler error: in process_init_constructor_array
Date: Fri, 16 Feb 2018 14:18:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/84286] [8 Regression] Segmentation fault of a chromium binary
Date: Fri, 16 Feb 2018 14:27:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We'll need to bisect on the .o level. I see no -Wabi=11 warnings though.
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Subject: [Bug c++/84286] [8 Regression] Segmentation fault of a chromium binary
Date: Fri, 16 Feb 2018 14:31:00 -0000
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #6)
> We'll need to bisect on the .o level. I see no -Wabi=11 warnings though.
It's here to be seen: https://pastebin.com/bZFRJycS
As mentioned visible only with -O0.
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Subject: [Bug c++/84375] [8 Regression] ICE with friend in local class
Date: Fri, 16 Feb 2018 14:31:00 -0000
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--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Author: nathan
Date: Fri Feb 16 14:30:55 2018
New Revision: 257739
URL: https://gcc.gnu.org/viewcvs?rev=257739&root=gcc&view=rev
Log:
[PR c++/84375] Fix ICE after bad friend
https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00987.html
PR c++/84375
* name-lookup.c (do_pushdecl): Bail out on bad local friend injection.
* g++.dg/lookup/pr84375.C: New.
Added:
trunk/gcc/testsuite/g++.dg/lookup/pr84375.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/name-lookup.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84375] [8 Regression] ICE with friend in local class
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Fixed r257739.
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Subject: [Bug c++/12944] [meta-bug] C++ name-lookup problems
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Bug 12944 depends on bug 84375, which changed state.
Bug 84375 Summary: [8 Regression] ICE with friend in local class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84375
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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Subject: [Bug target/84413] -mtune=skylake-avx512,cannonlake,icelake disable many tuning
Date: Fri, 16 Feb 2018 14:38:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |igor.v.tsimbalist at intel dot com
| |, pavel.v.chupin at gmail dot com
Target Milestone|--- |8.0
Summary|-march=skylake-avx512 |-mtune=skylake-avx512,canno
|disables BT instruction |nlake,icelake disable many
| |tuning
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Subject: [Bug c++/82764] [7/8 Regression] ICE in output_constructor_regular_field, at varasm.c:5030
Date: Fri, 16 Feb 2018 14:47:00 -0000
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Moving b out of the function reproduces the bug on x86_64 as well:
struct Empty {};
struct Empty2 : Empty {};
struct A : Empty2
{
int x {1};
int y {2};
};
struct B
{
A a {};
};
B b;
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Subject: [Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rdsandiford at googlemail dot com
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I haven't finished that before poly-int went it.
May I please ask Richard Sandiford to help me with the version of the patch
after we have poly-int in trunk?
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Subject: [Bug lto/83375] partitioner partitions static arrays with label references
Date: Fri, 16 Feb 2018 14:59:00 -0000
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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> ---
So Honza is suggesting to introduce IPA_REF_LABEL_ADDR and then do proper LTO
partitioning. Let me do this for GCC 9.
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Subject: [Bug middle-end/83023] branch probabilities pessimize malloc
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Subject: [Bug gcov-profile/84107] indirect call profiling broken with multiple DSOs
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Subject: [Bug gcov-profile/83200] Unable to manipulate (prefix, strip) coverage/profile data file (.gcda) paths at compile time
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug ipa/82278] [8 regression] gcc.dg/lto/chkp-ctor-merge fail
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/37239] peeling last iteration of a <= loop
Date: Fri, 16 Feb 2018 15:11:00 -0000
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--- Comment #8 from Michael Matz <matz at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> While hmmer is now split the testcase in this bug isn't. We do find some
> split points but appearantly never split the loop.
This is not a case for normal loop splitting. The loop in question has
multiple exits. The potential split point that is found is in the loop in
question,
but relative to the outer loop:
for ( qty--; i > 0; i--) siftDown (numbers, i, qty);
which inline-expanded looks somewhat like:
for ( qty--; i > 0; i--)
top = i, maxIdx = i, last = qty;
while (last >= (maxIdx += maxIdx)) {
/* This is where the comparison occurrs and where a sufficiently
good compiler can use a computed conditional result rather
than using control logic. */
if (maxIdx != last && numbers[maxIdx] < numbers[maxIdx + 1]) maxIdx++;
if (tmp >= numbers[maxIdx]) break;
numbers[top] = numbers[maxIdx];
top = maxIdx;
}
The potential split point is the pre-header check if the inner loop is to
be entered at all (i.e. "last >= 2*maxIdx"). The outer loop isn't split
because i and 2*maxIdx (aka 2*i) don't have the same steps.
Of course even if we'd split the outer loop we wouldn't gain anything here.
Also note that the wanted transformation isn't exactly peeling the last
iteration. The last iteration must only be entered if the non-normal exit
isn't taken. Dealing with all that is currently not implemented.
>From gcc-bugs-return-593694-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 15:11:37 2018
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Subject: [Bug sanitizer/83392] FAIL: c-c++-common/ubsan/ptr-overflow-sanitization-1.c scan-tree-dump-times
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-593695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 15:15:47 2018
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Fri, 16 Feb 2018 15:24:00 -0000
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--- Comment #5 from Neil Carlson <neil.n.carlson at gmail dot com> ---
Thomas, I saw you generated a patch with "stop n". I'd love to see how you did
it -- the regexp and counting magic.
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From: "wilco.dijkstra at arm dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84114] global reassociation pass prevents fma usage, generates slower code
Date: Fri, 16 Feb 2018 15:28:00 -0000
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Wilco <wilco.dijkstra at arm dot com> changed:
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--- Comment #5 from Wilco <wilco.dijkstra at arm dot com> ---
(In reply to Steve Ellcey from comment #4)
> While teaching the reassociation pass about fma's seems like the right
> answer would it be reasonable (and simpler) to do the fma pass
> (pass_optimize_widening_mul) before
> the reassociation pass (pass_reassoc) to get the most fma's?
>
> That fixes my small test case but I haven't done a bigger performance check
> to see what the overall impact would be.
I don't know what else that would affect since the reassociation phase runs
very early - and it's late at this stage. My patch seems much safer. Even
easier might be to return 1 for FLOAT_MODE PLUS_EXPR in
aarch64_reassociation_width. Then we can fix the reassociation phase in GCC9.
>From gcc-bugs-return-593697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 15:28:03 2018
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
Date: Fri, 16 Feb 2018 15:35:00 -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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Is that really a rejects-valid, rather than previous accepts-invalid that
PR83273 fixed? The lambda parameter is not a constant expression, the
conversion operator is.
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Subject: [Bug c++/82468] [7/8 Regression] ICE with deduction guide template
Date: Fri, 16 Feb 2018 15:36:00 -0000
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Feb 16 15:34:58 2018
New Revision: 257740
URL: https://gcc.gnu.org/viewcvs?rev=257740&root=gcc&view=rev
Log:
/cp
2018-02-16 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/82468
* decl.c (check_special_function_return_type): Reject template
template parameter in deduction guide.
/testsuite
2018-02-16 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/82468
* g++.dg/cpp1z/class-deduction48.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction48.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/82468] [7 Regression] ICE with deduction guide template
Date: Fri, 16 Feb 2018 15:38:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE with |[7 Regression] ICE with
|deduction guide template |deduction guide template
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
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Subject: [Bug target/82096] [6/7 Regression] ICE in int_mode_for_mode, at stor-layout.c:403 with arm-linux-gnueabi
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--- Comment #11 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Fri Feb 16 15:37:35 2018
New Revision: 257741
URL: https://gcc.gnu.org/viewcvs?rev=257741&root=gcc&view=rev
Log:
Fix emit_store_flag_force () function to fix ICE in int_mode_for_mode,
at stor-layout.c:403 with arm-linux-gnueabi.
*** gcc/ChangeLog ***
2018-02-16 Sudakshina Das <sudi.das@arm.com>
Backport from trunk
2018-01-10 Sudakshina Das <sudi.das@arm.com>
PR target/82096
* expmed.c (emit_store_flag_force): Swap if const op0
and change VOIDmode to mode of op0.
*** gcc/testsuite/ChangeLog ***
2018-02-16 Sudakshina Das <sudi.das@arm.com>
Backport from trunk
2018-01-12 Sudakshina Das <sudi.das@arm.com>
* gcc.c-torture/compile/pr82096.c: Add dg-skip-if
directive.
Backport from trunk
2018-01-10 Sudakshina Das <sudi.das@arm.com>
PR target/82096
* gcc.c-torture/compile/pr82096.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.c-torture/compile/pr82096.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/expmed.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
Date: Fri, 16 Feb 2018 15:39:00 -0000
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> Is that really a rejects-valid
Yes, bool(v) is a constant-expression.
>From gcc-bugs-return-593702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 15:39:14 2018
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
Date: Fri, 16 Feb 2018 15:45:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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Subject: [Bug go/84215] Random results in go/libgo tests
Date: Fri, 16 Feb 2018 15:52:00 -0000
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--- Comment #8 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Still seeing at least os/signal having random pass/fail.
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Fri, 16 Feb 2018 15:56:00 -0000
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--- Comment #1 from Hubert Tong <hstong at ca dot ibm.com> ---
This appears to have been fixed on trunk.
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Subject: [Bug c++/84348] [7/8 Regression] ICE with invalid friend declaration
Date: Fri, 16 Feb 2018 16:08:00 -0000
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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> ---
Mine.
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From: "wilco.dijkstra at arm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/82518] [8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb since r252917
Date: Fri, 16 Feb 2018 16:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82518
--- Comment #49 from Wilco <wilco.dijkstra at arm dot com> ---
AArch64 does this:
(define_expand "vec_store_lanesoi<mode>"
[(set (match_operand:OI 0 "aarch64_simd_struct_operand" "=Utv")
(unspec:OI [(match_operand:OI 1 "register_operand" "w")
(unspec:VQ [(const_int 0)] UNSPEC_VSTRUCTDUMMY)]
UNSPEC_ST2))]
"TARGET_SIMD"
{
if (BYTES_BIG_ENDIAN)
{
rtx tmp = gen_reg_rtx (OImode);
rtx mask = aarch64_reverse_mask (<MODE>mode, <nunits>);
emit_insn (gen_aarch64_rev_reglistoi (tmp, operands[1], mask));
emit_insn (gen_aarch64_simd_st2<mode> (operands[0], tmp));
}
else
emit_insn (gen_aarch64_simd_st2<mode> (operands[0], operands[1]));
DONE;
})
ARM seems to be missing the swap:
(define_expand "vec_store_lanesoi<mode>"
[(set (match_operand:OI 0 "neon_struct_operand")
(unspec:OI [(match_operand:OI 1 "s_register_operand")
(unspec:VQ2 [(const_int 0)] UNSPEC_VSTRUCTDUMMY)]
UNSPEC_VST2))]
"TARGET_NEON")
So clearly looks like a backend issue.
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Subject: [Bug target/82518] [6/7/8 regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P2
Component|tree-optimization |target
Version|8.0 |6.4.1
Summary|[8 regression] |[6/7/8 regression]
|gfortran.fortran-torture/ex |gfortran.fortran-torture/ex
|ecute/in-pack.f90 fails on |ecute/in-pack.f90 fails on
|armeb since r252917 |armeb
Known to fail| |6.4.1
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 16:44:17 2018
New Revision: 257744
URL: https://gcc.gnu.org/viewcvs?rev=257744&root=gcc&view=rev
Log:
PR c++/84421 - type-dependent if constexpr
* semantics.c (finish_if_stmt_cond): Check
type_dependent_expression_p.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-if14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
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Subject: [Bug c++/82764] [7/8 Regression] ICE in output_constructor_regular_field, at varasm.c:5030
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--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 16:44:26 2018
New Revision: 257745
URL: https://gcc.gnu.org/viewcvs?rev=257745&root=gcc&view=rev
Log:
PR c++/82764 - C++17 ICE with empty base
* class.c (build_base_field_1): Set DECL_SIZE to zero for empty
base.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/nsdmi-empty1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
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Subject: [Bug c++/84421] [8 Regression] Lambda parameter is no longer a core constant expressions
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/82764] [7/8 Regression] ICE in output_constructor_regular_field, at varasm.c:5030
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 7.4/8.
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Subject: [Bug c++/82764] [7/8 Regression] ICE in output_constructor_regular_field, at varasm.c:5030
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--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 16:45:49 2018
New Revision: 257746
URL: https://gcc.gnu.org/viewcvs?rev=257746&root=gcc&view=rev
Log:
PR c++/82764 - C++17 ICE with empty base
* class.c (build_base_field_1): Set DECL_SIZE to zero for empty
base.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/nsdmi-empty1.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/class.c
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Subject: [Bug c++/82664] [7/8 Regression ] ICE when using Match7 library
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Further reduced:
template < typename > struct target_disambiguator;
template < typename R, typename A1 > struct target_disambiguator< R(A1) > {
typedef A1 type;
template < R (&)() > struct layout;
};
int main() {
typedef target_disambiguator< void (int) > ::type target_type ;
}
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Subject: [Bug fortran/84354] Replace '%qs' with %qs in fortran/decl.c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84354
--- Comment #3 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Fri Feb 16 18:01:02 2018
New Revision: 257750
URL: https://gcc.gnu.org/viewcvs?rev=257750&root=gcc&view=rev
Log:
2018-02-16 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/84354
* decl.c (gfc_get_pdt_instance): Replace '%qs' with %qs.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
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Subject: [Bug fortran/84354] Replace '%qs' with %qs in fortran/decl.c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84354
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Closing.
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From: "carll at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/84422] New: ICE on various builtin test functions when compiled with -mcpu=power7
Date: Fri, 16 Feb 2018 18:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84422
Bug ID: 84422
Summary: ICE on various builtin test functions when compiled
with -mcpu=power7
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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On Power 8 LE the following builtin test function produce an internal compiler
error when compiled with the command:
gcc -c -m64 -mcpu=power7 <file name>
gcc/testsuite/gcc.target/powerpc/builtins-3-runnable.c
during RTL pass: vregs
gcc/testsuite/gcc.target/powerpc/fold-vec-neg-longlong.p8.c
during RTL pass: vregs
gcc/testsuite/gcc.target/powerpc/fold-vec-neg-longlong.p9.c
during RTL pass: vregs
gcc/testsuite/gcc.target/powerpc/sse2-pmuludq-1.c
during RTL pass: expand
For completeness, the following also fails and has an existing PR for it.
gcc/testsuite/gcc.target/powerpc/builtin-fctid-fctiw-runnable.c
during RTL pass: reload
Note, existing PR 83964,
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Subject: [Bug rtl-optimization/70023] [6/7/8 Regression] ICE: in assign_by_spills, at lra-assigns.c:1417/8 with -fschedule-insns
Date: Fri, 16 Feb 2018 18:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70023
--- Comment #13 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Feb 16 18:17:09 2018
New Revision: 257751
URL: https://gcc.gnu.org/viewcvs?rev=257751&root=gcc&view=rev
Log:
2018-02-16 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/70023
* lra-constraints.c (inherit_in_ebb): Take hard reg mode of
src_regno into account.
2018-02-16 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/70023
* gcc.target/i386/pr70023.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr70023.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84423] New: [concepts] ICE with invalid using declaration
Date: Fri, 16 Feb 2018 18:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84423
Bug ID: 84423
Summary: [concepts] ICE with invalid using declaration
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
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The following invalid code snippet (compiled with "-fconcepts") triggers
an ICE scine GCC 6.1.0:
======================================================
template<typename> using A = auto;
template<template<typename> class> struct B {};
B<A> b;
======================================================
bug.cc:1:34: error: typedef declared 'auto'
template<typename> using A = auto;
^
bug.cc:5:4: internal compiler error: Segmentation fault
B<A> b;
^
0xeb0c3f crash_signal
../../gcc/gcc/toplev.c:325
0x95550a get_underlying_template
../../gcc/gcc/cp/pt.c:6055
0x97b798 convert_template_argument
../../gcc/gcc/cp/pt.c:7768
0x979bbb coerce_template_parms
../../gcc/gcc/cp/pt.c:8319
0x972dc6 lookup_template_class_1
../../gcc/gcc/cp/pt.c:8855
0x972dc6 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:9204
0x9a2b3d finish_template_type(tree_node*, tree_node*, int)
../../gcc/gcc/cp/semantics.c:3183
0x920764 cp_parser_template_id
../../gcc/gcc/cp/parser.c:15824
0x92086e cp_parser_class_name
../../gcc/gcc/cp/parser.c:22344
0x92d30f cp_parser_qualifying_entity
../../gcc/gcc/cp/parser.c:6574
0x92d30f cp_parser_nested_name_specifier_opt
../../gcc/gcc/cp/parser.c:6260
0x93b0c0 cp_parser_template_introduction
../../gcc/gcc/cp/parser.c:26849
0x93b0c0 cp_parser_template_declaration_after_export
../../gcc/gcc/cp/parser.c:27006
0x9406e4 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12756
0x940b01 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12637
0x940df4 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4559
0x940df4 c_parse_file()
../../gcc/gcc/cp/parser.c:38860
0xa3eee6 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491
[Bug 67491] [meta-bug] concepts issues
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From: "sje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84114] global reassociation pass prevents fma usage, generates slower code
Date: Fri, 16 Feb 2018 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84114
--- Comment #6 from Steve Ellcey <sje at gcc dot gnu.org> ---
(In reply to Wilco from comment #5)
> (In reply to Steve Ellcey from comment #4)
> > While teaching the reassociation pass about fma's seems like the right
> > answer would it be reasonable (and simpler) to do the fma pass
> > (pass_optimize_widening_mul) before
> > the reassociation pass (pass_reassoc) to get the most fma's?
> >
> > That fixes my small test case but I haven't done a bigger performance check
> > to see what the overall impact would be.
>
> I don't know what else that would affect since the reassociation phase runs
> very early - and it's late at this stage. My patch seems much safer. Even
> easier might be to return 1 for FLOAT_MODE PLUS_EXPR in
> aarch64_reassociation_width. Then we can fix the reassociation phase in GCC9.
Moving the fma phase did not have a good performance impact (it was worse).
Your patch of setting the reassociation width to 1 did help performance on
ThunderX2.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libffi/84410] libffi doesn't support riscv now, but not disabled in configure.ac
Date: Fri, 16 Feb 2018 18:50:00 -0000
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Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |wilson at gcc dot gnu.org
Ever confirmed|0 |1
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84424] New: ICE on C++ code: tree check: expected record_type or union_type or qual_union_type, have vector_type in reduced_constant_expression_p, at cp/constexpr.c:1766
Date: Fri, 16 Feb 2018 18:51:00 -0000
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Bug ID: 84424
Summary: ICE on C++ code: tree check: expected record_type or
union_type or qual_union_type, have vector_type in
reduced_constant_expression_p, at cp/constexpr.c:1766
Product: gcc
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This seems to be a recent regression as the code is accepted by 7.2.0.
$ 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/8.0.1/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 8.0.1 20180216 (experimental) [trunk revision 257739] (GCC)
$
$ g++-7.2.0 -c tmp.cpp
$
$ g++tk -c tmp.cpp
tmp.cpp:4:42: internal compiler error: tree check: expected record_type or
union_type or qual_union_type, have vector_type in
reduced_constant_expression_p, at cp/constexpr.c:1766
constexpr vec v = __builtin_shuffle (v, u);
^
0x63cd06 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc-source-trunk/gcc/tree.c:9337
0x70aefc tree_check3(tree_node*, char const*, int, char const*, tree_code,
tree_code, tree_code)
../../gcc-source-trunk/gcc/tree.h:3172
0x70aefc reduced_constant_expression_p(tree_node*)
../../gcc-source-trunk/gcc/cp/constexpr.c:1766
0x70af64 verify_constant
../../gcc-source-trunk/gcc/cp/constexpr.c:1809
0x71267b cxx_eval_trinary_expression
../../gcc-source-trunk/gcc/cp/constexpr.c:3378
0x71267b cxx_eval_constant_expression
../../gcc-source-trunk/gcc/cp/constexpr.c:4526
0x71954d cxx_eval_outermost_constant_expr
../../gcc-source-trunk/gcc/cp/constexpr.c:4801
0x92a5a2 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc-source-trunk/gcc/cp/typeck2.c:833
0x750492 check_initializer
../../gcc-source-trunk/gcc/cp/decl.c:6378
0x778871 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc-source-trunk/gcc/cp/decl.c:7032
0x83428d cp_parser_init_declarator
../../gcc-source-trunk/gcc/cp/parser.c:19705
0x835f1f cp_parser_simple_declaration
../../gcc-source-trunk/gcc/cp/parser.c:13046
0x836e68 cp_parser_block_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12864
0x842c84 cp_parser_declaration
../../gcc-source-trunk/gcc/cp/parser.c:12761
0x841606 cp_parser_declaration_seq_opt
../../gcc-source-trunk/gcc/cp/parser.c:12637
0x841923 cp_parser_translation_unit
../../gcc-source-trunk/gcc/cp/parser.c:4559
0x841923 c_parse_file()
../../gcc-source-trunk/gcc/cp/parser.c:38860
0x98a825 c_common_parse_file()
../../gcc-source-trunk/gcc/c-family/c-opts.c:1132
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.
$
------------------------------------------------------------------
typedef int vec __attribute__ ((vector_size (2 * sizeof (int))));
constexpr vec u = { 1, 2 };
constexpr vec v = __builtin_shuffle (v, u);
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Subject: [Bug c++/84344] [concepts] ICE with invalid use of auto
Date: Fri, 16 Feb 2018 18:55:00 -0000
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--- Comment #2 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
This got fixed on 2018-02-13.
I suspect this was Jason's patch for PR84080.
Do we want to add this as an additional testcase?
Or should we just close this bug?
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Subject: [Bug c++/59912] [C++1y] ICE when deducing return type for specialized functions
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
Duplicate of PR84080 which got fixed on 2018-02-13 by rejecting the code (at
least for now, see comment #3).
*** This bug has been marked as a duplicate of bug 84080 ***
>From gcc-bugs-return-593725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:03:24 2018
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Subject: [Bug c++/84080] [6/7/8 Regression] the compiler crashes when compiling the following sample file
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
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CC| |n.sakisaka at gmail dot com
--- Comment #4 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
*** Bug 59912 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-593723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 18:55:49 2018
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Subject: [Bug target/84422] ICE on various builtin test functions when compiled with -mcpu=power7
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Carl Love <carll at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Carl Love <carll at gcc dot gnu.org> ---
GCC trunk commit 257752 fixed the issue with:
gcc/testsuite/gcc.target/powerpc/builtins-3-runnable.c
during RTL pass: vregs
>From gcc-bugs-return-593728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:07:12 2018
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Subject: [Bug c++/82664] [7/8 Regression ] ICE when using Match7 library
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 19:06:34 2018
New Revision: 257753
URL: https://gcc.gnu.org/viewcvs?rev=257753&root=gcc&view=rev
Log:
PR c++/82664 - ICE with reference to function template parm.
* pt.c (convert_nontype_argument_function): Avoid obfuscationg
NOP_EXPRs.
Added:
trunk/gcc/testsuite/g++.dg/template/nontype-fn1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #3)
> I haven't finished that before poly-int went it.
> May I please ask Richard Sandiford to help me with the version of the patch
> after we have poly-int in trunk?
The poly_int version of the comment #1 code would be something like:
poly_offset_int boff = *bit_offset + mem_ref_offset (base) * BITS_PER_UNIT;
if (!boff.to_shwi (bit_offset))
return NULL_TREE;
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Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Thanks for the reproducer, will look at this next week.
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Subject: [Bug c++/82664] [7/8 Regression ] ICE when using Match7 library
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--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 19:06:59 2018
New Revision: 257754
URL: https://gcc.gnu.org/viewcvs?rev=257754&root=gcc&view=rev
Log:
PR c++/82664 - ICE with reference to function template parm.
* pt.c (convert_nontype_argument_function): Avoid obfuscationg
NOP_EXPRs.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/template/nontype-fn1.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/pt.c
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Subject: [Bug c++/82664] [7/8 Regression ] ICE when using Match7 library
Date: Fri, 16 Feb 2018 19:23:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-593731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:23:41 2018
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Subject: [Bug c++/82148] [7/8 Regression] ICE in assign_temp, at function.c:968
Date: Fri, 16 Feb 2018 19:23:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed by the patch for 83227.
*** This bug has been marked as a duplicate of bug 83227 ***
>From gcc-bugs-return-593732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:23:42 2018
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Subject: [Bug c++/83227] [7 Regression] internal compiler error: in process_init_constructor_array
Date: Fri, 16 Feb 2018 19:39:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |matthias.hochsteger@tuwien.
| |ac.at
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
*** Bug 82148 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-593733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:39:25 2018
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Subject: [Bug c++/83835] [7/8 Regression] constexpr constructor rejected in c++17 mode (regression WRT c++14)
Date: Fri, 16 Feb 2018 19:53:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-593734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:53:12 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/84425] New: [8 Regression] Hang in ipa-inline.c starting with r250048
Date: Fri, 16 Feb 2018 19:53:00 -0000
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Bug ID: 84425
Summary: [8 Regression] Hang in ipa-inline.c starting with
r250048
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
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The following testcase hangs with -O2 in ipa-inline.c starting with r250048.
void bar (int);
void
foo (int x)
{
if (x < 5)
bar (x);
}
__attribute__((optimize(0))) void
bar (int x)
{
if (x > 10)
foo (x);
}
I think the actual bug is far older and has just been latent before.
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Subject: [Bug ipa/84425] [8 Regression] Hang in ipa-inline.c starting with r250048
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43444
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43444&action=edit
gcc8-pr84425.patch
Untested fix.
>From gcc-bugs-return-593735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 19:53:24 2018
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Subject: [Bug ipa/84425] [8 Regression] Hang in ipa-inline.c starting with r250048
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Ever confirmed|0 |1
>From gcc-bugs-return-593737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 20:00:11 2018
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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|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-16
CC| |jvdelisle at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jvdelisle at gcc dot gnu.org
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--- Comment #1 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
This does seem a litle odd. I will look into it.
>From gcc-bugs-return-593738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 20:06:05 2018
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/83835] [7/8 Regression] constexpr constructor rejected in c++17 mode (regression WRT c++14)
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 20:05:28 2018
New Revision: 257757
URL: https://gcc.gnu.org/viewcvs?rev=257757&root=gcc&view=rev
Log:
PR c++/83835 - C++17 error with constructor ctors.
* call.c (build_special_member_call): Set TARGET_EXPR_DIRECT_INIT_P.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor21.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 20:13:00 -0000
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Subject: [Bug c++/80290] [6/7/8 Regression] g++ uses unreasonable amount of memory compiling nested string maps
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--- Comment #18 from Jason Merrill <jason at gcc dot gnu.org> ---
Not currently working on this.
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Subject: [Bug c++/81853] [ 6/7/8 Regression] "using namespace" is not a constant expression in a statement expression
Date: Fri, 16 Feb 2018 20:34:00 -0000
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Subject: [Bug c++/84151] [6/7/8 Regression] g++ generates two identical loads in a volatile-qualified member function.
Date: Fri, 16 Feb 2018 20:38:00 -0000
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From: "ygribov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/81535] [8 regression] gcc.target/powerpc/pr79439.c fails starting with r250442
Date: Fri, 16 Feb 2018 20:41:00 -0000
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--- Comment #11 from Yury Gribov <ygribov at gcc dot gnu.org> ---
Author: ygribov
Date: Fri Feb 16 20:38:14 2018
New Revision: 257760
URL: https://gcc.gnu.org/viewcvs?rev=257760&root=gcc&view=rev
Log:
Fix PowerPC tests in PR 81535.
gcc/testsuite/
2018-02-16 Yury Gribov <tetra2005@gmail.com>
PR target/81535
* gcc.dg/pr56727-1.c: Prevent tailcalls and update for powerpc*-*-*.
* gcc.dg/pr56727-2.c: Ditto.
* gcc.target/powerpc/pr79439.c: Renamed to...
* gcc.target/powerpc/pr79439-1.c: ...this.
* gcc.target/powerpc/pr79439-2.c: New test.
* gcc.target/powerpc/pr79439-3.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr79439-1.c
trunk/gcc/testsuite/gcc.target/powerpc/pr79439-2.c
trunk/gcc/testsuite/gcc.target/powerpc/pr79439-3.c
Removed:
trunk/gcc/testsuite/gcc.target/powerpc/pr79439.c
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/pr56727-1.c
trunk/gcc/testsuite/gcc.dg/pr56727-2.c
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Subject: [Bug c++/84426] New: [8 Regression] ICE with conflicting class member names
Date: Fri, 16 Feb 2018 21:03:00 -0000
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Bug ID: 84426
Summary: [8 Regression] ICE with conflicting class member names
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
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The following invalid code snippet triggers an ICE on trunk:
=============================
struct A
{
int foo;
virtual void foo();
};
struct B : A {};
=============================
bug.cc:4:20: error: 'virtual void A::foo()' conflicts with a previous
declaration
virtual void foo();
^
bug.cc:3:7: note: previous declaration 'int A::foo'
int foo;
^~~
bug.cc:7:8: internal compiler error: in update_vtable_entry_for_fn, at
cp/class.c:2412
struct B : A {};
^
0x5dcc45 update_vtable_entry_for_fn
../../gcc/gcc/cp/class.c:2412
0x5dcc45 dfs_modify_vtables
../../gcc/gcc/cp/class.c:2664
0x998a4d dfs_walk_all(tree_node*, tree_node* (*)(tree_node*, void*), tree_node*
(*)(tree_node*, void*), void*)
../../gcc/gcc/cp/search.c:1410
0x99ac87 dfs_walk_once(tree_node*, tree_node* (*)(tree_node*, void*),
tree_node* (*)(tree_node*, void*), void*)
../../gcc/gcc/cp/search.c:1507
0x843eaa modify_all_vtables
../../gcc/gcc/cp/class.c:2692
0x843eaa finish_struct_1(tree_node*)
../../gcc/gcc/cp/class.c:6827
0x845d6c finish_struct(tree_node*, tree_node*)
../../gcc/gcc/cp/class.c:7061
0x927000 cp_parser_class_specifier_1
../../gcc/gcc/cp/parser.c:22498
0x928f79 cp_parser_class_specifier
../../gcc/gcc/cp/parser.c:22742
0x928f79 cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:16748
0x936126 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13606
0x93b7f0 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12916
0x93c798 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x9406f2 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12761
0x940b01 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12637
0x940df4 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4559
0x940df4 c_parse_file()
../../gcc/gcc/cp/parser.c:38860
0xa3eee6 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
The regression was introduced between 2017-09-09 and 2017-09-22.
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Subject: [Bug target/81594] Optimize PowerPC vector set and store
Date: Fri, 16 Feb 2018 21:03:00 -0000
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--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
What's the status of this one?
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Subject: [Bug c++/81853] [ 6/7/8 Regression] "using namespace" is not a constant expression in a statement expression
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81853
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:02:55 2018
New Revision: 257762
URL: https://gcc.gnu.org/viewcvs?rev=257762&root=gcc&view=rev
Log:
PR c++/81853 - using-directive and constexpr.
* constexpr.c (cxx_eval_constant_expression): Handle USING_STMT.
Added:
trunk/gcc/testsuite/g++.dg/ext/stmtexpr22.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 21:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84420
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:02:50 2018
New Revision: 257761
URL: https://gcc.gnu.org/viewcvs?rev=257761&root=gcc&view=rev
Log:
PR c++/84420 - ICE with structured binding in lambda.
* lambda.c (is_capture_proxy): Check DECL_DECOMPOSITION_P.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/decomp-lambda1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
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Subject: [Bug c++/84151] [6/7/8 Regression] g++ generates two identical loads in a volatile-qualified member function.
Date: Fri, 16 Feb 2018 21:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84151
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:03:02 2018
New Revision: 257763
URL: https://gcc.gnu.org/viewcvs?rev=257763&root=gcc&view=rev
Log:
PR c++/84151 - unnecessary volatile load with static member.
* call.c (build_new_method_call_1): Avoid loading from a volatile
lvalue used as the object argument for a static member function.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/volatile1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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Subject: [Bug c++/81853] [ 6/7/8 Regression] "using namespace" is not a constant expression in a statement expression
Date: Fri, 16 Feb 2018 21:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81853
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:06:50 2018
New Revision: 257766
URL: https://gcc.gnu.org/viewcvs?rev=257766&root=gcc&view=rev
Log:
PR c++/81853 - using-directive and constexpr.
* constexpr.c (cxx_eval_constant_expression): Handle USING_STMT.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/ext/stmtexpr22.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/constexpr.c
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 21:07:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/84420] [8 Regression] ICE when accessing a structured binding in a lambda
Date: Fri, 16 Feb 2018 21:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84420
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:06:45 2018
New Revision: 257765
URL: https://gcc.gnu.org/viewcvs?rev=257765&root=gcc&view=rev
Log:
PR c++/84420 - ICE with structured binding in lambda.
* lambda.c (is_capture_proxy): Check DECL_DECOMPOSITION_P.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp1z/decomp-lambda1.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/lambda.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/83835] [7/8 Regression] constexpr constructor rejected in c++17 mode (regression WRT c++14)
Date: Fri, 16 Feb 2018 21:07:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:06:39 2018
New Revision: 257764
URL: https://gcc.gnu.org/viewcvs?rev=257764&root=gcc&view=rev
Log:
PR c++/83835 - C++17 error with constructor ctors.
* call.c (build_special_member_call): Set TARGET_EXPR_DIRECT_INIT_P.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/constexpr-ctor21.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/call.c
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Subject: [Bug c++/84151] [6/7/8 Regression] g++ generates two identical loads in a volatile-qualified member function.
Date: Fri, 16 Feb 2018 21:07:00 -0000
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:06:56 2018
New Revision: 257767
URL: https://gcc.gnu.org/viewcvs?rev=257767&root=gcc&view=rev
Log:
PR c++/84151 - unnecessary volatile load with static member.
* call.c (build_new_method_call_1): Avoid loading from a volatile
lvalue used as the object argument for a static member function.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/tree-ssa/volatile1.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/call.c
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/83835] [7/8 Regression] constexpr constructor rejected in c++17 mode (regression WRT c++14)
Date: Fri, 16 Feb 2018 21:08:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |7.4
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/81853] [ 6/7/8 Regression] "using namespace" is not a constant expression in a statement expression
Date: Fri, 16 Feb 2018 21:19:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |7.4
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 7.4. If anyone cares about having this fixed in 6.5, I can apply it
there too.
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Subject: [Bug c++/83911] [6/7/8 Regression] ICE with target attribute on constructor in gimplify_expr at gimplify.c:11321
Date: Fri, 16 Feb 2018 21:35:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jason at gcc dot gnu.org
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Subject: [Bug c++/84151] [6 Regression] g++ generates two identical loads in a volatile-qualified member function.
Date: Fri, 16 Feb 2018 21:35:00 -0000
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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.
>From gcc-bugs-return-593758-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 21:35:37 2018
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Subject: [Bug c++/84151] [6 Regression] g++ generates two identical loads in a volatile-qualified member function.
Date: Fri, 16 Feb 2018 21:54:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 16 21:34:57 2018
New Revision: 257768
URL: https://gcc.gnu.org/viewcvs?rev=257768&root=gcc&view=rev
Log:
PR c++/84151 - unnecessary volatile load with static member.
* call.c (build_new_method_call_1): Avoid loading from a volatile
lvalue used as the object argument for a static member function.
Added:
branches/gcc-6-branch/gcc/testsuite/g++.dg/tree-ssa/volatile1.C
Modified:
branches/gcc-6-branch/gcc/cp/ChangeLog
branches/gcc-6-branch/gcc/cp/call.c
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Subject: [Bug tree-optimization/84427] New: gcc ICE at -O3 on x86_64-linux-gnu in compute_antic, at tree-ssa-pre.c:2356
Date: Fri, 16 Feb 2018 22:04:00 -0000
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Bug ID: 84427
Summary: gcc ICE at -O3 on x86_64-linux-gnu in compute_antic,
at tree-ssa-pre.c:2356
Product: gcc
Version: unknown
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Level "-O2" works fine.
$ 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/8.0.1/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 8.0.1 20180216 (experimental) [trunk revision 257735] (GCC)
$ gcc-trunk -O3 -c abc.c
abc.c: In function ‘fn1’:
abc.c:5:14: warning: implicit declaration of function ‘fn2’; did you mean
‘fn1’? [-Wimplicit-function-declaration]
void fn1() { fn2(e, a); }
^~~
fn1
during GIMPLE pass: pre
abc.c:5:6: internal compiler error: in compute_antic, at tree-ssa-pre.c:2356
void fn1() { fn2(e, a); }
^~~
0x6cc6ff compute_antic
../../gcc/gcc/tree-ssa-pre.c:2356
0x6cc6ff execute
../../gcc/gcc/tree-ssa-pre.c:4114
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.
$ cat abc.c
short a, d, e;
unsigned char b;
int c, f;
char g, h;
void fn1() { fn2(e, a); }
int fn2(int p1, int p2) {
l1:
b = a;
for (; h; h--)
if (p1)
g = p2 * c;
else {
c = d;
if (f)
goto l1;
}
}
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Subject: [Bug c++/84424] [8 Regression] ICE on C++ code: tree check: expected record_type or union_type or qual_union_type, have vector_type in reduced_constant_expression_p, at cp/constexpr.c:1766
Date: Fri, 16 Feb 2018 22:09:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-02-16
CC| |jason at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Summary|ICE on C++ code: tree |[8 Regression] ICE on C++
|check: expected record_type |code: tree check: expected
|or union_type or |record_type or union_type
|qual_union_type, have |or qual_union_type, have
|vector_type in |vector_type in
|reduced_constant_expression |reduced_constant_expression
|_p, at cp/constexpr.c:1766 |_p, at cp/constexpr.c:1766
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm it with r257668 but not with the top of trunk (r257768). The
regression was introduced in r251948. I vaguely remember a bug with a test
case similar to this one go by but I can't find it. Can you please retry with
a newer revision and report back?
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Subject: [Bug c++/84426] [8 Regression] ICE with conflicting class member names
Date: Fri, 16 Feb 2018 22:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |msebor at gcc dot gnu.org,
| |nathan at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r252005 (gcc 8.0.0):
r252005 | nathan | 2017-09-12 08:50:56 -0400 (Tue, 12 Sep 2017) | 20 lines
Kill CLASSTYPE_SORTED_FIELDS.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/84427] [8 Regression] gcc ICE at -O3 on x86_64-linux-gnu in compute_antic, at tree-ssa-pre.c:2356
Date: Fri, 16 Feb 2018 22:21:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-16
CC| |msebor at gcc dot gnu.org
Summary|gcc ICE at -O3 on |[8 Regression] gcc ICE at
|x86_64-linux-gnu in |-O3 on x86_64-linux-gnu in
|compute_antic, at |compute_antic, at
|tree-ssa-pre.c:2356 |tree-ssa-pre.c:2356
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r253998.
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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++/84423] [concepts] ICE with invalid using declaration
Date: Fri, 16 Feb 2018 22:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84423
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-02-16
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with r257668 but not with the top of trunk. Looks like it might have
been fixed recently. Can you please retry with a fresh revision and report
back?
>From gcc-bugs-return-593764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 22:23:52 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/59833] ARM soft-float extendsfdf2 fails to quiet signaling NaN
Date: Fri, 16 Feb 2018 22:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59833
--- Comment #16 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Fri, 16 Feb 2018, egallager at gcc dot gnu.org wrote:
> > powerpc failure of floating-point extensions to quiet signaling NaNs
> > (because loads implicitly extend from float to double in a way that's
> > defined as bit-manipulation rather than a convertFormat operation) is bug
> > 56828.
>
> but bug 56828 was closed as INVALID...
Maybe the test in that bug in fact only covered cases involving long
double (which is what that closure was for). There is an issue with
conversion from float to double on powerpc (FPRs always store values in
double format, and a load of a float value is a bitwise operation that
never raises exceptions but produces a double sNaN when loading a float
sNaN - which can be stored back to float in memory as a float sNaN with no
exceptions - meaning that converting a float value in registers to double
is treated as a no-op). It's normally OK to do that, if the converted
value will be used in double arithmetic - but if it's stored back to
memory as a double without having gone through arithmetic other than abs /
negate / copysign, it will incorrectly remain a double sNaN, and in that
case, given -fsignaling-nans, something should be done to convert it
explicitly to a qNaN (e.g. use an frsp instruction, which would do nothing
to a value representable as float which is not a signaling NaN).
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/84215] Random results in go/libgo tests
Date: Fri, 16 Feb 2018 22:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84215
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
On i686 with many cores, r257758 gave:
...
goroutine 24690 [GC worker (idle)]:
runtime.mcall
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:342
runtime.gopark
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:321
runtime.gcBgMarkWorker
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/mgc.go:1776
runtime.kickoff
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:1161
created by runtime.gcBgMarkStartWorkers
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/mgc.go:1722
+92
goroutine 23558 [running]:
goroutine running on other thread; stack unavailable
created by testing.T.Run
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:824 +740
goroutine 24113 [chan send]:
runtime.mcall
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:342
runtime.gopark
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:321
runtime.goparkunlock
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:327
runtime.chansend
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/chan.go:249
runtime.chansend1
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/chan.go:135
testing.tRunner..func1
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:728
runtime.deferreturn
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/panic.go:205
testing.tRunner
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:783
runtime.kickoff
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest330678/test/proc.go:1161
created by testing.T.Run
/export/gnu/import/git/sources/gcc/libgo/go/testing/testing.go:824 +740
eax 0x0
ebx 0x2
ecx 0xb93e1afc
edx 0x0
edi 0x0
esi 0x8
ebp 0xb93e1afc
esp 0xb93e1ae0
eip 0xf7f42db9
eflags 0x282
cs 0x23
fs 0x0
gs 0x63
FAIL: runtime
goroutine 4122 [IO wait]:
internal_poll.runtime_pollWait
/export/gnu/import/git/sources/gcc/libgo/go/runtime/netpoll.go:176
internal_poll.pollDesc.wait
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_poll_runtime.go:85
internal_poll.pollDesc.waitRead
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_poll_runtime.go:90
internal_poll.FD.Accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_unix.go:372
net.netFD.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/fd_unix.go:238
net.TCPListener.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock_posix.go:136
net.TCPListener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock.go:259
net_http.Server.Serve
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest249618/test/server.go:2770
httptest.func1
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:280
created by net_http_httptest.Server.goServe
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:278
+198
goroutine 4535 [semacquire]:
syscall.Accept4
/export/gnu/import/git/sources/gcc/libgo/go/syscall/libcall_linux.go:176
poll.accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/sock_cloexec.go:17
internal_poll.FD.Accept
/export/gnu/import/git/sources/gcc/libgo/go/internal/poll/fd_unix.go:365
net.netFD.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/fd_unix.go:238
net.TCPListener.accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock_posix.go:136
net.TCPListener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/net/tcpsock.go:259
crypto_tls.listener.Accept
/export/gnu/import/git/sources/gcc/libgo/go/crypto/tls/tls.go:52
net_http.Server.Serve
/export/build/gnu/gcc-32bit/build-i686-linux/i686-linux/libgo/gotest249618/test/server.go:2770
httptest.func1
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:280
created by net_http_httptest.Server.goServe
/export/gnu/import/git/sources/gcc/libgo/go/net/http/httptest/server.go:278
+198
eax 0x0
ebx 0x2
ecx 0xce0f1fbc
edx 0x0
edi 0x0
esi 0x8
ebp 0xce0f1fbc
esp 0xce0f1fa0
eip 0xf7f3edb9
eflags 0x286
cs 0x23
fs 0x0
gs 0x63
FAIL: net/http
/tmp/cc2A9bsi.s: Assembler messages:
/tmp/cc2A9bsi.s:7954: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7965: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7976: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7977: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7978: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7979: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:7993: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8004: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8015: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8016: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8017: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8018: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8032: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8043: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8054: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8055: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8056: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8057: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8071: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8082: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8093: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8094: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8095: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8096: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8110: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8121: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8132: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8133: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8134: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8135: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8149: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8160: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8171: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8172: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8173: Error: leb128 operand is an undefined symbol: .LVU443
/tmp/cc2A9bsi.s:8174: Error: leb128 operand is an undefined symbol: .LVU443
FAIL: golang_org/x/crypto/chacha20poly1305/internal/chacha20
FAIL: golang_org/x/crypto/curve25519
FAIL: golang_org/x/net/lex/httplex
checksyms: found unexpected symbol "__libc_start_main@@GLIBC_2.0"
FAIL: checksyms
spawn [open ...]^M
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=2 addr=4140130304 pc=4152026464]
runtime stack:
doscanstack1
/export/gnu/import/git/sources/gcc/libgo/runtime/stack.c:77
runtime_mstart
/export/gnu/import/git/sources/gcc/libgo/runtime/proc.c:527
goroutine 33 [GC worker (idle)]:
created by runtime.gcStart
/export/gnu/import/git/sources/gcc/libgo/go/runtime/mgc.go:1299 +412
goroutine 1 [GC assist marking (scan)]:
panic
/export/gnu/import/git/sources/gcc/libgo/go/runtime/panic.go:462
runtime_panicstring
/export/gnu/import/git/sources/gcc/libgo/runtime/panic.c:38
main.main..func1
./index0-out.go:140
main.test
./index0-out.go:112
main.main
./index0-out.go:140
FAIL: ./index0-out.go execution, -O0 -g -fno-var-tracking-assignments
>From gcc-bugs-return-593767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 22:37:11 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Fri, 16 Feb 2018 22:37:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
r254843 appears to have fixed this:
r254843 | jason | 2017-11-16 15:13:48 -0500 (Thu, 16 Nov 2017) | 15 lines
PR c++/79092 - non-type args of different types are different
>From gcc-bugs-return-593766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 22:28:10 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/84416] internal compiler error: in int_cst_value, at tree.c:11089
Date: Fri, 16 Feb 2018 22:37:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Ignoring weird targets (m32c...), there's no valid use for array indices
larger than size_t / ptrdiff_t (beyond I suppose any optimization effects
from knowing that the conversion of the array index, or offset added to a
pointer, to a pointer-sized integer of the same signedness does not change
the value).
>From gcc-bugs-return-593768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 16 22:37:30 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Fri, 16 Feb 2018 22:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79064
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Feb 16 22:36:53 2018
New Revision: 257769
URL: https://gcc.gnu.org/viewcvs?rev=257769&root=gcc&view=rev
Log:
gcc/testsuite/ChangeLog:
PR c++/79064
* g++.dg/overload15.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/template/overload15.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84192] [7/8 Regression] ICE with statement expression
Date: Fri, 16 Feb 2018 22:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84192
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 22:38:53 2018
New Revision: 257770
URL: https://gcc.gnu.org/viewcvs?rev=257770&root=gcc&view=rev
Log:
PR c++/84192
* constexpr.c (cxx_eval_constant_expression) <case RETURN_EXPR>: Don't
set *jump_target to anything if jump_target is NULL.
* g++.dg/cpp1y/constexpr-84192.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-84192.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/84418] ICE with fortran OpenMP linear (ref ()) clause
Date: Fri, 16 Feb 2018 22:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84418
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 22:40:32 2018
New Revision: 257771
URL: https://gcc.gnu.org/viewcvs?rev=257771&root=gcc&view=rev
Log:
PR fortran/84418
* trans-openmp.c (gfc_trans_omp_clauses): For OMP_CLAUSE_LINEAR_REF
kind set OMP_CLAUSE_LINEAR_STEP to TYPE_SIZE_UNIT times last_step.
* libgomp.fortran/pr84418-1.f90: New test.
* libgomp.fortran/pr84418-2.f90: New test.
Added:
trunk/libgomp/testsuite/libgomp.fortran/pr84418-1.f90
trunk/libgomp/testsuite/libgomp.fortran/pr84418-2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-openmp.c
trunk/libgomp/ChangeLog
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Subject: [Bug c++/84424] [8 Regression] ICE on C++ code: tree check: expected record_type or union_type or qual_union_type, have vector_type in reduced_constant_expression_p, at cp/constexpr.c:1766
Date: Fri, 16 Feb 2018 23:05:00 -0000
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--- Comment #2 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Martin Sebor from comment #1)
> I can confirm it with r257668 but not with the top of trunk (r257768). The
> regression was introduced in r251948. I vaguely remember a bug with a test
> case similar to this one go by but I can't find it. Can you please retry
> with a newer revision and report back?
My latest build is r257757, which still ICEs on this test.
I am building the top of the trunk.
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Subject: [Bug ipa/84425] [8 Regression] Hang in ipa-inline.c starting with r250048
Date: Fri, 16 Feb 2018 23:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84425
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 16 23:05:00 2018
New Revision: 257772
URL: https://gcc.gnu.org/viewcvs?rev=257772&root=gcc&view=rev
Log:
PR ipa/84425
* ipa-inline.c (inline_small_functions): Fix a typo.
* gcc.c-torture/compile/pr84425.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr84425.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-inline.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/84418] ICE with fortran OpenMP linear (ref ()) clause
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far, queued for 7.4 backporting.
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Subject: [Bug c++/84192] [7 Regression] ICE with statement expression
Date: Fri, 16 Feb 2018 23:06:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|mpolacek at gcc dot gnu.org |jakub at gcc dot gnu.org
Summary|[7/8 Regression] ICE with |[7 Regression] ICE with
|statement expression |statement expression
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug ipa/84425] [8 Regression] Hang in ipa-inline.c starting with r250048
Date: Fri, 16 Feb 2018 23:26:00 -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> ---
Fixed.
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Subject: [Bug ada/84277] [8 Regression] A lot of new acats testsuite failures
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84277
--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Feb 16 23:26:08 2018
New Revision: 257773
URL: https://gcc.gnu.org/viewcvs?rev=257773&root=gcc&view=rev
Log:
PR ada/84277
* gnat.dg/array11.adb (Array11): Tweak index and remove warning.
* gnat.dg/dispatch1.adb: Rename into...
* gnat.dg/disp1.adb: ...this.
* gnat.dg/dispatch1_p.ads: Rename into...
* gnat.dg/disp1_pkg.ads: ...this.
* gnat.dg/disp2.adb: Rename into...
* gnat.dg/dispatch2.adb: ...this.
* gnat.dg/dispatch2_p.ads: Rename into...
* gnat.dg/disp2_pkg.ads: ...this.
* gnat.dg/dispatch2_p.adb: Rename into...
* gnat.dg/disp2_pkg.adb: this.
* gnat.dg/generic_dispatch.adb: Rename into...
* gnat.dg/generic_disp.adb: this.
* gnat.dg/generic_dispatch_p.ads: Rename into...
* gnat.dg/generic_disp_pkg.ads: ...this.
* gnat.dg/generic_dispatch_p.adb: Rename into...
* gnat.dg/generic_disp_pkg.adb: ...this.
* gnat.dg/null_pointer_deref1.adb (Null_Pointer_Deref1): Robustify.
* gnat.dg/null_pointer_deref2.adb (Null_Pointer_Deref2): Likewise.
* gnat.dg/object_overflow1.adb: Tweak index.
* gnat.dg/object_overflow2.adb: Likewise.
* gnat.dg/object_overflow3.adb: Likewise.
* gnat.dg/object_overflow4.adb: Likewise.
* gnat.dg/object_overflow5.adb: Likewise.
Added:
trunk/gcc/testsuite/gnat.dg/disp1.adb
- copied, changed from r257772, trunk/gcc/testsuite/gnat.dg/dispatch1.adb
trunk/gcc/testsuite/gnat.dg/disp1_pkg.ads
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/dispatch1_p.ads
trunk/gcc/testsuite/gnat.dg/disp2.adb
- copied, changed from r257772, trunk/gcc/testsuite/gnat.dg/dispatch2.adb
trunk/gcc/testsuite/gnat.dg/disp2_pkg.adb
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/dispatch2_p.adb
trunk/gcc/testsuite/gnat.dg/disp2_pkg.ads
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/dispatch2_p.ads
trunk/gcc/testsuite/gnat.dg/generic_disp.adb
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/generic_dispatch.adb
trunk/gcc/testsuite/gnat.dg/generic_disp_pkg.adb
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
trunk/gcc/testsuite/gnat.dg/generic_disp_pkg.ads
- copied, changed from r257772,
trunk/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Removed:
trunk/gcc/testsuite/gnat.dg/dispatch1.adb
trunk/gcc/testsuite/gnat.dg/dispatch1_p.ads
trunk/gcc/testsuite/gnat.dg/dispatch2.adb
trunk/gcc/testsuite/gnat.dg/dispatch2_p.adb
trunk/gcc/testsuite/gnat.dg/dispatch2_p.ads
trunk/gcc/testsuite/gnat.dg/generic_dispatch.adb
trunk/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
trunk/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gnat.dg/array11.adb
trunk/gcc/testsuite/gnat.dg/null_pointer_deref1.adb
trunk/gcc/testsuite/gnat.dg/null_pointer_deref2.adb
trunk/gcc/testsuite/gnat.dg/object_overflow1.adb
trunk/gcc/testsuite/gnat.dg/object_overflow2.adb
trunk/gcc/testsuite/gnat.dg/object_overflow3.adb
trunk/gcc/testsuite/gnat.dg/object_overflow4.adb
trunk/gcc/testsuite/gnat.dg/object_overflow5.adb
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/84277] [8 Regression] A lot of new acats testsuite failures
Date: Fri, 16 Feb 2018 23:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84277
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Feb 16 23:26:49 2018
New Revision: 257774
URL: https://gcc.gnu.org/viewcvs?rev=257774&root=gcc&view=rev
Log:
PR ada/84277
* gnat.dg/array11.adb (Array11): Tweak index and remove warning.
* gnat.dg/dispatch1.adb: Rename into...
* gnat.dg/disp1.adb: ...this.
* gnat.dg/dispatch1_p.ads: Rename into...
* gnat.dg/disp1_pkg.ads: ...this.
* gnat.dg/disp2.adb: Rename into...
* gnat.dg/dispatch2.adb: ...this.
* gnat.dg/dispatch2_p.ads: Rename into...
* gnat.dg/disp2_pkg.ads: ...this.
* gnat.dg/dispatch2_p.adb: Rename into...
* gnat.dg/disp2_pkg.adb: this.
* gnat.dg/generic_dispatch.adb: Rename into...
* gnat.dg/generic_disp.adb: this.
* gnat.dg/generic_dispatch_p.ads: Rename into...
* gnat.dg/generic_disp_pkg.ads: ...this.
* gnat.dg/generic_dispatch_p.adb: Rename into...
* gnat.dg/generic_disp_pkg.adb: ...this.
* gnat.dg/null_pointer_deref1.adb (Null_Pointer_Deref1): Robustify.
* gnat.dg/null_pointer_deref2.adb (Null_Pointer_Deref2): Likewise.
* gnat.dg/object_overflow1.adb: Tweak index.
* gnat.dg/object_overflow2.adb: Likewise.
* gnat.dg/object_overflow3.adb: Likewise.
* gnat.dg/object_overflow4.adb: Likewise.
* gnat.dg/object_overflow5.adb: Likewise.
Added:
branches/gcc-7-branch/gcc/testsuite/gnat.dg/disp1.adb
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch1.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/disp1_pkg.ads
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch1_p.ads
branches/gcc-7-branch/gcc/testsuite/gnat.dg/disp2.adb
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/disp2_pkg.adb
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2_p.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/disp2_pkg.ads
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2_p.ads
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_disp.adb
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_disp_pkg.adb
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_disp_pkg.ads
- copied, changed from r257773,
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Removed:
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch1.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch1_p.ads
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2_p.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/dispatch2_p.ads
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gnat.dg/array11.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/null_pointer_deref1.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/null_pointer_deref2.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/object_overflow1.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/object_overflow2.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/object_overflow3.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/object_overflow4.adb
branches/gcc-7-branch/gcc/testsuite/gnat.dg/object_overflow5.adb
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/84277] [8 Regression] A lot of new acats testsuite failures
Date: Fri, 16 Feb 2018 23:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84277
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Feb 16 23:27:21 2018
New Revision: 257775
URL: https://gcc.gnu.org/viewcvs?rev=257775&root=gcc&view=rev
Log:
PR ada/84277
* gnat.dg/array11.adb (Array11): Tweak index and remove warning.
* gnat.dg/dispatch1.adb: Rename into...
* gnat.dg/disp1.adb: ...this.
* gnat.dg/dispatch1_p.ads: Rename into...
* gnat.dg/disp1_pkg.ads: ...this.
* gnat.dg/disp2.adb: Rename into...
* gnat.dg/dispatch2.adb: ...this.
* gnat.dg/dispatch2_p.ads: Rename into...
* gnat.dg/disp2_pkg.ads: ...this.
* gnat.dg/dispatch2_p.adb: Rename into...
* gnat.dg/disp2_pkg.adb: this.
* gnat.dg/generic_dispatch.adb: Rename into...
* gnat.dg/generic_disp.adb: this.
* gnat.dg/generic_dispatch_p.ads: Rename into...
* gnat.dg/generic_disp_pkg.ads: ...this.
* gnat.dg/generic_dispatch_p.adb: Rename into...
* gnat.dg/generic_disp_pkg.adb: ...this.
* gnat.dg/null_pointer_deref1.adb (Null_Pointer_Deref1): Robustify.
* gnat.dg/null_pointer_deref2.adb (Null_Pointer_Deref2): Likewise.
* gnat.dg/object_overflow1.adb: Tweak index.
* gnat.dg/object_overflow2.adb: Likewise.
* gnat.dg/object_overflow3.adb: Likewise.
* gnat.dg/object_overflow4.adb: Likewise.
* gnat.dg/object_overflow5.adb: Likewise.
Added:
branches/gcc-6-branch/gcc/testsuite/gnat.dg/disp1.adb
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch1.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/disp1_pkg.ads
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch1_p.ads
branches/gcc-6-branch/gcc/testsuite/gnat.dg/disp2.adb
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/disp2_pkg.adb
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2_p.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/disp2_pkg.ads
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2_p.ads
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_disp.adb
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_disp_pkg.adb
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_disp_pkg.ads
- copied, changed from r257774,
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Removed:
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch1.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch1_p.ads
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2_p.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/dispatch2_p.ads
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/generic_dispatch_p.ads
Modified:
branches/gcc-6-branch/gcc/testsuite/ChangeLog
branches/gcc-6-branch/gcc/testsuite/gnat.dg/array11.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/null_pointer_deref1.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/null_pointer_deref2.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/object_overflow1.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/object_overflow2.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/object_overflow3.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/object_overflow4.adb
branches/gcc-6-branch/gcc/testsuite/gnat.dg/object_overflow5.adb
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/81535] [8 regression] gcc.target/powerpc/pr79439.c fails starting with r250442
Date: Fri, 16 Feb 2018 23:51:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |law at redhat dot com
Resolution|--- |FIXED
--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
Fixed by Yury's testsuite fixes on the trunk.
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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++/84424] [8 Regression] ICE on C++ code: tree check: expected record_type or union_type or qual_union_type, have vector_type in reduced_constant_expression_p, at cp/constexpr.c:1766
Date: Sat, 17 Feb 2018 00:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I can reproduce with latest trunk too.
The ICE is on:
1765 if (CONSTRUCTOR_NO_IMPLICIT_ZERO (t))
1766 field = next_initializable_field (TYPE_FIELDS (TREE_TYPE (t)));
1767 else
1768 field = NULL_TREE;
where t is:
<constructor 0x7fffefdb3228
type <vector_type 0x7fffefd9f9d8 vec
type <integer_type 0x7fffefc625e8 int public type_6 SI
size <integer_cst 0x7fffefc650c0 constant 32>
unit-size <integer_cst 0x7fffefc650d8 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffefc625e8 precision:32 min <integer_cst 0x7fffefc65078 -2147483648> max
<integer_cst 0x7fffefc65090 2147483647>
pointer_to_this <pointer_type 0x7fffefc6aa80>>
V2SI
size <integer_cst 0x7fffefc45e70 constant 64>
unit-size <integer_cst 0x7fffefc45e88 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffefd72d20 nunits:2>
constant tree_1 length:0>
created in:
4783 if (AGGREGATE_TYPE_P (type) || VECTOR_TYPE_P (type))
4784 {
4785 /* In C++14 an NSDMI can participate in aggregate initialization,
4786 and can refer to the address of the object being initialized,
so
4787 we need to pass in the relevant VAR_DECL if we want to do the
4788 evaluation in a single pass. The evaluation will dynamically
4789 update ctx.values for the VAR_DECL. We use the same strategy
4790 for C++11 constexpr constructors that refer to the object
being
4791 initialized. */
4792 ctx.ctor = build_constructor (type, NULL);
4793 CONSTRUCTOR_NO_IMPLICIT_ZERO (ctx.ctor) = true;
VECTOR_TYPE obviously doesn't have TYPE_FIELDS.
I guess we need to teach reduced_constant_expression_p how to handle
VECTOR_TYPE constructors.
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Subject: [Bug target/84154] [7 Regression] PowerPC GCC 7 and 8 have regression in converting fp to short/char and returning it
Date: Sat, 17 Feb 2018 00:24:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Michael Meissner <meissner at gcc dot gnu.org> ---
Fixed in trunk and GCC 7 branches.
GCC 6 incorporated the first fix (to set the conversion correctly for
signed/unsigned) that only shows up if the scalar is in an Altivec register.
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Subject: [Bug target/79242] [7 Regression] ICE in simplify_subreg, at simplify-rtx.c:6029
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on gcc-7 branch as well.
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Subject: [Bug lto/83997] ICE with alias template and attribute
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-17
CC| |msebor at gcc dot gnu.org
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug target/79242] [7 Regression] ICE in simplify_subreg, at simplify-rtx.c:6029
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--- Comment #13 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Sat Feb 17 00:25:15 2018
New Revision: 257779
URL: https://gcc.gnu.org/viewcvs?rev=257779&root=gcc&view=rev
Log:
2018-02-16 Jozef Lawrynowicz <jozefl.gcc@gmail.com>
PR target/79242
* machmode.def: Define a complex mode for PARTIAL_INT.
* genmodes.c (complex_class): Return MODE_COMPLEX_INT for
MODE_PARTIAL_INT.
* doc/rtl.texi: Document CSPImode.
* config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
handling.
(msp430_hard_regno_nregs_with_padding): Likewise.
PR target/79242
gcc.target/msp430/pr79242.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/msp430/pr79242.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/msp430/msp430.c
branches/gcc-7-branch/gcc/doc/rtl.texi
branches/gcc-7-branch/gcc/genmodes.c
branches/gcc-7-branch/gcc/machmode.def
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug debug/84342] Location views breaks cross builds of arm including gnueabihf
Date: Sat, 17 Feb 2018 00:35:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8 Regression] Location |Location views breaks cross
|views breaks cross builds |builds of arm including
|of arm including gnueabihf |gnueabihf
--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
Alex: I realize that's the point of the hook. But I'm pretty sure there's no
way to fix the ARM port given the point at which lengths are set and the point
at which ccfsm is valid are at two different times. We'd either need a revamp
of ccfsm or some layering violations to allow dwarf2out to access the
underlying routines for length query and bypass the cache.
It's my view this BZ is resolved. But if you want to keep it open to track the
incorrect lengths in the ARM port, that's fine. But it's certainly no longer a
regression for gcc-8.
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Subject: [Bug tree-optimization/83991] [8 regression] gcc.dg/vect/pr79347.c fail
Date: Sat, 17 Feb 2018 00:53:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |law at redhat dot com
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--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
DUP.
*** This bug has been marked as a duplicate of bug 82965 ***
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Subject: [Bug debug/84317] [8 regression] SEGV in dwarf2out.c (dwarf2out_source_line)
Date: Sat, 17 Feb 2018 00:53:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Resolution|--- |FIXED
--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
WRT c#5. The final consensus was that we can't reliably support the views
within GCC unless the target ports are audited for insns which emit no code,
but which have a nonzero length.
Until ports are audited and deemed safe, the best way to get view support is to
use a modern version of the GNU assembler. So things are behaving as we
want/expect them.
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Subject: [Bug tree-optimization/82965] [8 regression][armeb] gcc.dg/vect/pr79347.c starts failing after r254379
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andrey.y.guskov at intel dot com
--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
*** Bug 83991 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-593789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 00:56:54 2018
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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/32306] [6/7/8 Regression] redundant && || not eliminated
Date: Sat, 17 Feb 2018 00:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32306
--- Comment #37 from Jeffrey A. Law <law at redhat dot com> ---
Another thought for dealing with this BZ: Use the infrastructure Alex built to
identify blocks that are in effect forwarders (ie, they need not be copied for
jump threading). Use that knowledge to thread deeper in the CFG each
iteration.
>From gcc-bugs-return-593790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 00:57:28 2018
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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++/83624] Strong using deprecation warning in C++03
Date: Sat, 17 Feb 2018 01:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83624
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Support for attribute strong was removed in GCC 8 via r248337. GCC now issues
the following warning (and provides no option to suppress it):
$ cat pr83624.C && gcc -S -Wall -Wextra pr83624.C
namespace my_ns {}
using namespace my_ns __attribute__((__strong__));
pr83624.C:2:49: warning: strong using directive no longer supported
using namespace my_ns __attribute__((__strong__));
^
pr83624.C:1:11: note: you may use an inline namespace instead
namespace my_ns {}
^~~~~
I'm sympathetic to the argument for continuing to support it but I'm afraid the
decision has already been made and implemented and it seems quite unlikely that
it will be reversed. So resolving as won't fix.
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Subject: [Bug c++/83542] template deduction failure when using pack in both deduced and non-deduced contexts
Date: Sat, 17 Feb 2018 03:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-17
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with 8.0. Both Clang and ICC compile the code.
>From gcc-bugs-return-593792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 03:13:44 2018
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
Date: Sat, 17 Feb 2018 03:15:00 -0000
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--- Comment #2 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Looking at our -fdump-tree-original, since the derived type contains nothing we
are not building any call to output anything.
>From a practical point of view its a nonsensical case and one could argue to
not bother with this one.
>From a pedantic point of view (or perhaps academic) maybe we should create an
empty call so the user defined procedure gets called. Very interesting and a
frontend related question.
>From gcc-bugs-return-593793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 03:15:52 2018
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Subject: [Bug fortran/84387] Defined output does not work for a derived type that has no components
Date: Sat, 17 Feb 2018 03:56:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
Assignee|jvdelisle at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Unassigning myself. This one is low priority.
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Sat, 17 Feb 2018 05:44:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvdelisle at gcc dot gnu.org
--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Steve Kargl from comment #5)
> This patch fixes the problem, but I'm in an area of
> the compiler that I do not too well. It might open
> gfortran to other problems. Jerry, any comments?
>
> Index: io.c
> ===================================================================
> --- io.c (revision 257695)
> +++ io.c (working copy)
> @@ -1012,8 +1012,7 @@ data_desc:
> goto between_desc;
>
> default:
> - error = unexpected_element;
> - goto syntax;
> + goto format_item_1;
> }
> break;
Hi Steve,
I think I prefer this patch, regression tested OK.
diff --git a/gcc/fortran/io.c b/gcc/fortran/io.c
index 9b7c2de16f4..d9f0fb1d4ac 100644
--- a/gcc/fortran/io.c
+++ b/gcc/fortran/io.c
@@ -985,6 +985,9 @@ data_desc:
case FMT_COMMA:
goto format_item;
+ case FMT_COLON:
+ goto format_item_1;
+
case FMT_LPAREN:
dtio_vlist:
>From gcc-bugs-return-593795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 05:44:45 2018
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Subject: [Bug sanitizer/84428] New: =q22=dressSanitizer CHECK failed: ../../../sanitizer/asan/asan_interceptors.cc:384 "((__interception::real___cxa_throw)) != (0)" (0x0, 0x0)
Date: Sat, 17 Feb 2018 06:09:00 -0000
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Bug ID: 84428
Summary: ==7122==AddressSanitizer CHECK failed:
../../../sanitizer/asan/asan_interceptors.cc:384
"((__interception::real___cxa_throw)) != (0)" (0x0,
0x0)
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: ezyang at mit dot edu
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: ---
jenkins@37ecc4612171:~/pytorch$ gcc-7 --version
gcc-7 (Ubuntu 7.2.0-1ubuntu1~14.04) 7.2.0
Copyright (C) 2017 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.
When I run ASAN on my program, it trips this assert failure:
test_AdaptiveMaxPool1d_indices (__main__.TestNN) ... ==7122==AddressSanitizer
CHECK failed: ../../../../sanitizer/asan/asan_interceptors.cc:384
"((__interception::real___cxa_throw)) != (0)" (0x0, 0x0)
#0 0x7f7f9a3edbc5 (/usr/lib/gcc/x86_64-linux-gnu/7/libasan.so+0xe4bc5)
#1 0x7f7f9a40a8f5 in __sanitizer::CheckFailed(char const*, int, char
const*, unsigned long long, unsigned long long)
(/usr/lib/gcc/x86_64-linux-gnu/7/libasan.so+0x1018f5)
#2 0x7f7f9a340e8c in __interceptor___cxa_throw
(/usr/lib/gcc/x86_64-linux-gnu/7/libasan.so+0x37e8c)
#3 0x7f7f7b7e48cf in
torch::autograd::SavedVariable::unpack(std::shared_ptr<torch::autograd::Function>)
const torch/csrc/autograd/saved_variable.cpp:50
#4 0x7f7f7bfeb75f in
torch::autograd::generated::AdaptiveMaxPool2DBackward::apply(std::vector<torch::autograd::Variable,
std::allocator<torch::autograd::Variable> > const&)
torch/csrc/autograd/generated/Functions.cpp:4096
#5 0x7f7f7b7a5af6 in
torch::autograd::Function::operator()(std::vector<torch::autograd::Variable,
std::allocator<torch::autograd::Variable> >
const&)/var/lib/jenkins/pytorch/torch/csrc/autograd/function.h:93
#6 0x7f7f7b7a5af6 in call_function torch/csrc/autograd/engine.cpp:235
#7 0x7f7f7b7a5af6 in
torch::autograd::Engine::evaluate_function(torch::autograd::FunctionTask&)
torch/csrc/autograd/engine.cpp:254
#8 0x7f7f7b7a93b6 in
torch::autograd::Engine::thread_main(torch::autograd::GraphTask*)
torch/csrc/autograd/engine.cpp:174
#9 0x7f7f7b79919e in torch::autograd::Engine::thread_init(int)
torch/csrc/autograd/engine.cpp:150
#10 0x7f7f7b84e505 in
torch::autograd::python::PythonEngine::thread_init(int)
torch/csrc/autograd/python_engine.cpp:34
#11 0x7f7f7b7b412c in void std::__invoke_impl<void, void
(torch::autograd::Engine::*)(int), torch::autograd::Engine*,
int>(std::__invoke_memfun_deref, void (torch::autograd::Engine::*&&)(int),
torch::autograd::Engine*&&, int&&) /usr/include/c++/7/bits/invoke.h:73
#12 0x7f7f7b7b412c in std::__invoke_result<void
(torch::autograd::Engine::*)(int), torch::autograd::Engine*, int>::type
std::__invoke<void(torch::autograd::Engine::*)(int), torch::autograd::Engine*,
int>(void (torch::autograd::Engine::*&&)(int), torch::autograd::Engine*&&,
int&&) /usr/include/c++/7/bits/invoke.h:95
#13 0x7f7f7b7b412c in decltype (__invoke((_S_declval<0ul>)(),
(_S_declval<1ul>)(), (_S_declval<2ul>)()))
std::thread::_Invoker<std::tuple<void (torch::autograd::Engine::*)(int),
torch::autograd::Engine*, int> >::_M_invoke<0ul, 1ul,
2ul>(std::_Index_tuple<0ul, 1ul, 2ul>) /usr/include/c++/7/thread:234
#14 0x7f7f7b7b412c in std::thread::_Invoker<std::tuple<void
(torch::autograd::Engine::*)(int), torch::autograd::Engine*, int>
>::operator()() /usr/include/c++/7/thread:243
#15 0x7f7f7b7b412c in
std::thread::_State_impl<std::thread::_Invoker<std::tuple<void
(torch::autograd::Engine::*)(int), torch::autograd::Engine*, int> > >::_M_run()
/usr/include/c++/7/thread:186
#16 0x7f7f919c821e (/usr/lib/x86_64-linux-gnu/libstdc++.so.6+0x9121e)
#17 0x7f7f99bb8183 in start_thread
(/lib/x86_64-linux-gnu/libpthread.so.0+0x8183)
#18 0x7f7f998e503c in clone (/lib/x86_64-linux-gnu/libc.so.6+0xfe03c)
Steps to reproduce:
1. Build this branch of PyTorch with ASAN
https://github.com/pytorch/pytorch/pull/5271 (CFLAGS="-fsanitize=address
-fuse-ld=gold"0
2. Run LD_PRELOAD="/usr/lib/gcc/x86_64-linux-gnu/7/libasan.so" python
test/test_nn.py -v TestNN.test_AdaptiveMaxPool1d_indices
I can try to reduce but I wanted to first see if the error rung a bell
Some notes:
1. The code is legitimately throwing a C++ exception
2. The code in question is dynamically loaded by Python (thus the LD_PRELOAD)
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Subject: [Bug middle-end/77433] warn about usage of object that outside of the scope of the object
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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| |msebor at gcc dot gnu.org
--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> Confirmed, I can't seem to find the bug report (I thought there was one).
bug 69433 or bug 82520 perhaps?
(In reply to Jakub Jelinek from comment #7)
> https://gcc.gnu.org/ml/gcc-patches/2016-05/msg00911.html
> https://gcc.gnu.org/ml/gcc-patches/2016-08/msg01331.html
> use-after-scope sanitization should catch this.
I forget, was this added? Adding "patch" keyword in case it wasn't.
>From gcc-bugs-return-593797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 06:10:14 2018
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Subject: [Bug sanitizer/84428] =q22=dressSanitizer CHECK failed: ../../../sanitizer/asan/asan_interceptors.cc:384 "((__interception::real___cxa_throw)) != (0)" (0x0, 0x0)
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Seems like real___cxa_throw was not being initialized.
>From gcc-bugs-return-593798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 06:53:35 2018
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Sat, 17 Feb 2018 07:59:00 -0000
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--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Sat, Feb 17, 2018 at 03:56:14AM +0000, jvdelisle at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84389
>
> I think I prefer this patch, regression tested OK.
>
> diff --git a/gcc/fortran/io.c b/gcc/fortran/io.c
> index 9b7c2de16f4..d9f0fb1d4ac 100644
> --- a/gcc/fortran/io.c
> +++ b/gcc/fortran/io.c
> @@ -985,6 +985,9 @@ data_desc:
> case FMT_COMMA:
> goto format_item;
>
> + case FMT_COLON:
> + goto format_item_1;
> +
> case FMT_LPAREN:
>
> dtio_vlist:
>
Works for me.
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Mikael Pettersson from comment #7)
> Patch posted:
> https://gcc.gnu.org/ml/gcc-patches/2016-09/msg00647.html
The reply was that it should be sent upstream. Adding the "patch" keyword here
for now anyways though.
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Subject: [Bug target/70713] msp430 interrupt attribute prevents overriding weak symbols
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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> ---
(In reply to dj@gcc.gnu.org from comment #3)
> Author: dj
> Date: Tue Sep 13 20:06:47 2016
> New Revision: 240123
>
> URL: https://gcc.gnu.org/viewcvs?rev=240123&root=gcc&view=rev
> Log:
> 2016-09-13 Joe Seymour <joe.s@somniumtech.com>
>
> gcc/
> PR target/70713
> * config/msp430/msp430.c (msp430_start_function): Emit an error
> if a function is both weak and specifies an interrupt number.
>
> gcc/testsuite/
> PR target/70713
> * gcc.target/msp430/function-attributes-1.c: New test.
> * gcc.target/msp430/function-attributes-2.c: New test.
> * gcc.target/msp430/function-attributes-3.c: New test.
>
> Added:
> trunk/gcc/testsuite/gcc.target/msp430/function-attributes-1.c
> trunk/gcc/testsuite/gcc.target/msp430/function-attributes-2.c
> trunk/gcc/testsuite/gcc.target/msp430/function-attributes-3.c
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/config/msp430/msp430.c
> trunk/gcc/testsuite/ChangeLog
Did this fix it?
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Subject: [Bug fortran/74600] [openacc] duplicate data map error
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Thomas Schwinge from comment #2)
> Cesar posted patch:
> <https://gcc.gnu.org/ml/gcc-patches/2016-09/msg00556.html>, waiting for
> review.
Jakub said it'd require more discussion; I'll add the "patch" keyword in the
meantime
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Subject: [Bug tree-optimization/82965] [8 regression][armeb] gcc.dg/vect/pr79347.c starts failing after r254379
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--- Comment #10 from bin.cheng <amker.cheng at gmail dot com> ---
a proposed patch @https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02419.html
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Subject: [Bug fortran/84115] [8 Regression] Failure in associate construct with concatenated character target
Date: Sat, 17 Feb 2018 11:13:00 -0000
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--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 17 11:07:32 2018
New Revision: 257781
URL: https://gcc.gnu.org/viewcvs?rev=257781&root=gcc&view=rev
Log:
2018-02-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/84115
* resolve.c (resolve_assoc_var): If a non-constant target expr.
has no string length expression, make the associate variable
into a deferred length, allocatable symbol.
* trans-decl.c (gfc_is_reallocatable_lhs): Add and use a ptr to
the symbol.
* trans-stmt.c (trans_associate_var): Null and free scalar
associate names that are allocatable. After assignment, remove
the allocatable attribute to prevent reallocation.
2018-02-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/84115
* gfortran.dg/associate_35.f90: Remove error, add stop n's and
change to run.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/primary.c
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/associate_35.f90
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Subject: [Bug fortran/84115] [8 Regression] Failure in associate construct with concatenated character target
Date: Sat, 17 Feb 2018 11:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84115
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk, thanks for the report.
Paul
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Subject: [Bug fortran/84115] [8 Regression] Failure in associate construct with concatenated character target
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Forgot to close it :-)
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Subject: [Bug c++/84423] [concepts] ICE with invalid using declaration
Date: Sat, 17 Feb 2018 13:06:00 -0000
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--- Comment #2 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
I can still reproduce the crash with a clean trunk from 2 hours ago (r257780).
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Subject: [Bug fortran/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
Date: Sat, 17 Feb 2018 14:17:00 -0000
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Neil Carlson from comment #5)
> Thomas, I saw you generated a patch with "stop n". I'd love to see how you
> did it -- the regexp and counting magic.
At first, I tried to find the all-inclusive regexp to do this, but
that didn't work fast enough, so I settled for running different
scripts for different cases. I didn't actually save all the
scripts.
The first one was
#! /usr/bin/perl
$n = 1;
$abort = "call *abort *([(] *[)])?";
while (<>)
{
if (/$abort/) {
s/$abort/STOP $n/;
$n++;
}
print;
}
and another one
$n = 1;
while (<>)
{
if (/call\s*abort$/i) {
s/call\s*abort/STOP $n/i;
$n++;
}
print;
}
and invoked them with
find . -type f -name '*.[fF]*' -exec perl -i ./c2.pl '{}' ';'
Not the most general solution, but it got me there :-)
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Subject: [Bug fortran/84381] replace non-std 'call abort' by 'stop 1' in gfortran testsuite
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 17 14:05:34 2018
New Revision: 257782
URL: https://gcc.gnu.org/viewcvs?rev=257782&root=gcc&view=rev
Log:
2018-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/84381
* gfortran.dg/abort_shoulfail.f90: New test.
* gcc.target/powerpc/ppc-fortran/pr80108-1.f90: Replace CALL ABORT
by STOP n.
* gfortran.dg/PR19754_2.f90: Likewise.
* gfortran.dg/PR19872.f: Likewise.
... and so on. The full ChangeLog was rejected because it was too long :-)
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Subject: [Bug fortran/84094] several correctness issues in gfortran.dg
Date: Sat, 17 Feb 2018 15:16:00 -0000
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Bug 84094 depends on bug 84381, which changed state.
Bug 84381 Summary: replace non-std 'call abort' by 'stop 1' in gfortran testsuite
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84381
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Sat, 17 Feb 2018 15:53:00 -0000
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--- Comment #60 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #59)
> Should be fixed on trunk, please test and confirm.
Confirmed fixed on trunk. Many thanks.
Could you please backport to gcc-7-branch and gcc-6-branch? Or okay the
backport, which I would be happy to apply.
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Subject: [Bug fortran/84270] [7/8 Regression] optimization bug with assumed size array argument
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 17 15:53:07 2018
New Revision: 257783
URL: https://gcc.gnu.org/viewcvs?rev=257783&root=gcc&view=rev
Log:
2018-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/84270
* frontend-passes (scalarized_expr): If the expression
is an assumed size array, leave in the last reference
and pass AR_SECTION instead of AR_FULL to gfc_resolve
in order to avoid an error.
2018-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/84270
* gfortran.dg/inline_matmul_22.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/inline_matmul_22.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/frontend-passes.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/84270] [7/8 Regression] optimization bug with assumed size array argument
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84270
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 17 16:01:50 2018
New Revision: 257784
URL: https://gcc.gnu.org/viewcvs?rev=257784&root=gcc&view=rev
Log:
2018-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/84270
* frontend-passes (scalarized_expr): If the expression
is an assumed size array, leave in the last reference
and pass AR_SECTION instead of AR_FULL to gfc_resolve
in order to avoid an error.
2018-02-17 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/84270
* gfortran.dg/inline_matmul_22.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/inline_matmul_22.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/frontend-passes.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Sat, 17 Feb 2018 16:02:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2018-02-17
Resolution|FIXED |---
Ever confirmed|0 |1
--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
FAIL: g++.dg/template/overload15.C -std=c++11 (test for excess errors)
Excess errors:
/daten/aranym/gcc/gcc-20180217/gcc/testsuite/g++.dg/template/overload15.C:14:10:
error: call of overloaded 'f<0>(char (*)[1])' is ambiguous
/daten/aranym/gcc/gcc-20180217/gcc/testsuite/g++.dg/template/overload15.C:15:10:
error: no matching function for call to 'f<0>(char (*)[7])'
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84270] [7/8 Regression] optimization bug with assumed size array argument
Date: Sat, 17 Feb 2018 18:02:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all affected branches, closing.
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/82996] ICE and segfault with derived type finalization
Date: Sat, 17 Feb 2018 19:47:00 -0000
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--- Comment #9 from Neil Carlson <neil.n.carlson at gmail dot com> ---
With today's version (r257782) I'm still seeing the same thing Dominique
reported in comment 7, except that there is no longer any abort -- the programs
terminate successfully (0 exit code) despite the reported runtime error. I'm
not sure what to make of that.
Example error:
$ ./a.out
gfortran-20171114a.f90:48: runtime error: member access within misaligned
address 0x00000060ab25 for type 'struct foo', which requires 8 byte alignment
0x00000060ab25: note: pointer points here
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00
^
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Subject: [Bug target/84361] Fails to use vfmaddsub* for complex multiplication
Date: Sat, 17 Feb 2018 21:03:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=81904
--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
Related to one part of bug 81904.
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Subject: [Bug c++/84139] C++17 Filesystem/Filesystem TS + cmcstl2 = GCC ICE
Date: Sat, 17 Feb 2018 21:30:00 -0000
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--- Comment #5 from Christopher Di Bella <cjdb.ns at gmail dot com> ---
It appears this is now compiling on trunk: https://godbolt.org/g/L9igrS.
Thanks.
Is it safe to close this issue yet?
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84429] New: [8 Regression] ICE capturing variable-sized array
Date: Sat, 17 Feb 2018 21:46:00 -0000
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Bug ID: 84429
Summary: [8 Regression] ICE capturing variable-sized array
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
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The following valid code snippet triggers an ICE on trunk:
=====================================
void foo(int i)
{
char x[i];
[&]{ [&]{ return x; }; };
}
=====================================
bug.cc: In lambda function:
bug.cc:4:20: internal compiler error: in build_capture_proxy, at
cp/lambda.c:459
[&]{ [&]{ return x; }; };
^
0x8d5615 build_capture_proxy(tree_node*, tree_node*)
../../gcc/gcc/cp/lambda.c:459
0x8d5926 add_capture(tree_node*, tree_node*, tree_node*, bool, bool)
../../gcc/gcc/cp/lambda.c:660
0x8d5ece add_default_capture(tree_node*, tree_node*, tree_node*)
../../gcc/gcc/cp/lambda.c:710
0x9abfe8 finish_id_expression(tree_node*, tree_node*, tree_node*, cp_id_kind*,
bool, bool, bool*, bool, bool, bool, bool, char const**, unsigned int)
../../gcc/gcc/cp/semantics.c:3541
0x91dd9c cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5607
0x9301bc cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7026
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x913878 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x91c01b cp_parser_jump_statement
../../gcc/gcc/cp/parser.c:12396
0x91c01b cp_parser_statement
../../gcc/gcc/cp/parser.c:10810
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91d897 cp_parser_lambda_body
../../gcc/gcc/cp/parser.c:10669
0x91d897 cp_parser_lambda_expression
../../gcc/gcc/cp/parser.c:10176
0x91d897 cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5257
0x9301bc cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7026
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
Please submit a full bug report, [etc.]
The regression was introduced between 2017-09-26 and 2017-10-07.
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Subject: [Bug c++/84430] New: [7/8 Regression] ICE with #pragma omp simd in lambda
Date: Sat, 17 Feb 2018 21:57:00 -0000
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Bug ID: 84430
Summary: [7/8 Regression] ICE with #pragma omp simd in lambda
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, openmp
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The following valid code snippet (compiled with "-std=c++1z -fopenmp")
triggers an ICE since GCC 7.1.0:
=======================================
void foo()
{
[]{
#pragma omp simd
for (int i = 0; i < 10; ++i)
;
};
}
=======================================
bug.cc: In lambda function:
bug.cc:7:3: sorry, unimplemented: unexpected AST of kind omp_simd
};
^
bug.cc:7:3: internal compiler error: in potential_constant_expression_1, at
cp/constexpr.c:5993
0x857e92 potential_constant_expression_1
../../gcc/gcc/cp/constexpr.c:5993
0x8975c6 finish_function(bool)
../../gcc/gcc/cp/decl.c:15671
0x8d83c2 finish_lambda_function(tree_node*)
../../gcc/gcc/cp/lambda.c:1384
0x91d8c1 cp_parser_lambda_body
../../gcc/gcc/cp/parser.c:10675
0x91d8c1 cp_parser_lambda_expression
../../gcc/gcc/cp/parser.c:10176
0x91d8c1 cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5257
0x9301bc cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7026
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x913878 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x915538 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:11112
0x91b8ad cp_parser_statement
../../gcc/gcc/cp/parser.c:10916
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91ce97 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11209
0x933610 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21750
0x933610 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21787
0x933ec0 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26688
0x934bd7 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:26604
Please submit a full bug report, [etc.]
>From gcc-bugs-return-593820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 21:57:43 2018
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Subject: [Bug c/84431] New: Suboptimal code for masked shifts (x86/x86-64)
Date: Sat, 17 Feb 2018 22:34:00 -0000
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Product: gcc
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In x86 and x86-64, the assumption is that upper bits of the CL register are
unused (i.e., masked) when doing a shift operation. It is not possible to do
shift for more than (WORD_BITS - 1) positions. Normally, the compiler has to
check whether the specified shift value exceeds the word size before generating
corresponding shld/shl commands (shrd/shr, etc).
Now, if the shift value is given by some variable, it is normally unknown at
compile time whether it is exceeding (WORD_BITS - 1), so the compiler has to
generate corresponding checks. On the other hand, it is very easy to give a
hint to the compiler (if it is known that the shift < WORD_BITS) by masking
shift value like this (the example below is for i386; for x86-64 the type will
be __uint128_t and mask 63):
unsigned long long func(unsigned long long a, unsigned shift)
{
return a << (shift & 31);
}
In the ideal scenario, the compiler has to just load value to CL without even
masking it because it is implied already by the shift operation.
Note that clang/LLVM recognizes this pattern (at least for i386) by generating
the following assembly code:
func: # @func
pushl %esi
movl 8(%esp), %esi
movb 16(%esp), %cl
movl 12(%esp), %edx
movl %esi, %eax
shldl %cl, %esi, %edx
shll %cl, %eax
popl %esi
retl
GCC generates suboptimal code in this case:
func:
pushl %esi
pushl %ebx
movl 20(%esp), %ecx
movl 16(%esp), %esi
movl 12(%esp), %ebx
andl $31, %ecx
movl %esi, %edx
shldl %ebx, %edx
movl %ebx, %eax
xorl %ebx, %ebx
sall %cl, %eax
andl $32, %ecx
cmovne %eax, %edx
cmovne %ebx, %eax
popl %ebx
popl %esi
ret
>From gcc-bugs-return-593821-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 22:34:53 2018
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Subject: [Bug fortran/84432] New: Detect illegal component initialization in pdt_27.f03
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Bug ID: 84432
Summary: Detect illegal component initialization in pdt_27.f03
Product: gcc
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https://github.com/nncarlson/gfortran.dg/issues/13
pdt_27.f03 is illegal wrt F08:C458. gfortran should check for that constraint.
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Subject: [Bug fortran/84412] [7/8 Regression] Erroneous "Inquire statement identifies an internal file" error
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |jvdelisle at gcc dot gnu.org
--- Comment #2 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Mine
>From gcc-bugs-return-593823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 23:13:18 2018
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 17 23:15:47 2018
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Subject: [Bug fortran/84432] [F08] Detect illegal component initialization in pdt_27.f03
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Detect illegal component |[F08] Detect illegal
|initialization in |component initialization in
|pdt_27.f03 |pdt_27.f03
--- Comment #1 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> pdt_27.f03 is illegal wrt F08:C458.
That constraint seems to be missing in F03 AFAICS. I find the neighboring
clauses (C457/459) as C446/447 in F03, but not F08:C458.
>From gcc-bugs-return-593825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 04:01:04 2018
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Subject: [Bug c++/83911] [6/7/8 Regression] ICE with target attribute on constructor in gimplify_expr at gimplify.c:11321
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 43445
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43445&action=edit
patch
The problem here is that we're substituting a dispatcher function for a
constructor, and the dispatcher function isn't marked as being a constructor.
This seems like a general issue that the dispatcher lacks all language-specific
information that might be helpful, but in this specific instance it's easy
enough to copy DECL_CXX_CONSTRUCTOR_P.
>From gcc-bugs-return-593826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 05:11:40 2018
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Subject: [Bug middle-end/84433] New: gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84433
Bug ID: 84433
Summary: gcc 7 and before miscompile loop and remove exit due
to incorrect range calculation
Product: gcc
Version: 7.3.1
Status: UNCONFIRMED
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Component: middle-end
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Target: ppc64le
Created attachment 43446
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43446&action=edit
test case for range error bug
An incorrect range calculation results in the cunroll pass thinking that the
loop exit conditional branch can never happen:
Analyzing # of iterations of loop 1
exit condition [15, + , 4294967295] != 0
bounds on difference of bases: -15 ... -15
result:
# of iterations 15, bounded by 15
Loop 1 iterates 15 times.
Loop 1 iterates at most 14 times.
Loop 1 likely iterates at most 14 times.
Analyzing # of iterations of loop 1
exit condition [15, + , 4294967295] != 0
bounds on difference of bases: -15 ... -15
result:
# of iterations 15, bounded by 15
Removed pointless exit: if (ivtmp_24 != 0)
As a result gcc 7 and below (I've also tested 5.4.0 and 6.4.1) generate an
infinite loop here with -O2 or -O3. -O1 generates working code.
It appears this is fixed in gcc 8 as trunk does not have this failure. Not sure
if this can be fixed in 7 or 6 but I think I will see if this little test case
can go into the testsuite to make sure we don't run into this again.
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 18 08:59:06 2018
New Revision: 257788
URL: https://gcc.gnu.org/viewcvs?rev=257788&root=gcc&view=rev
Log:
2018-02-18 Paul Thomas <pault@gcc.gnu.org>
PR fortran/80945
* trans-array.c (gfc_conv_expr_descriptor): Set parmtype from
the typenode in the case of deferred length characters.
2018-02-18 Paul Thomas <pault@gcc.gnu.org>
PR fortran/80945
* gfortran.dg/associate_35.f90: Remove error, add stop n's and
change to run.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_19.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84434] New: [8 Regression] internal compiler error: tree check: expected var_decl or field_decl or function_decl or type_decl or template_decl, have using_decl in build_deduction_guide, at cp/pt.c:25636
Date: Sun, 18 Feb 2018 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84434
Bug ID: 84434
Summary: [8 Regression] internal compiler error: tree check:
expected var_decl or field_decl or function_decl or
type_decl or template_decl, have using_decl in
build_deduction_guide, at cp/pt.c:25636
Product: gcc
Version: 8.0
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Priority: P3
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namespace std {
template <typename _Tp> using decay_t = _Tp;
template <typename> class optional {};
} // namespace std
class RiskAnalysis {
struct Context;
void RunAnalysis(std::optional<Context>) noexcept;
};
namespace ext {
namespace detail::scope_guard {
template <typename Fn> class A {
Fn m_fn;
public:
template <typename Fn_> A(Fn_ p1) : m_fn(p1) {}
};
template <typename... Params> class B {
using callback_type = scope_guard::A<Params...>;
callback_type callback;
public:
template <typename... Params_> B(Params_... p1) : callback(p1...) {}
};
template <typename T> struct C { using type = T; };
template <typename T> using unwrap_decay_t = typename C<std::decay_t<T>>::type;
} // namespace detail::scope_guard
template <typename... Params>
struct scope_guard : detail::scope_guard::B<Params...> {
using base_type = detail::scope_guard::B<Params...>;
using base_type::base_type;
~scope_guard();
};
template <typename... Params>
scope_guard(Params...)
->scope_guard<detail::scope_guard::unwrap_decay_t<Params>...>;
} // namespace ext
void RiskAnalysis::RunAnalysis(std::optional<Context>) noexcept {
ext::scope_guard([] {});
}
$ ./cc1plus -quiet bz.cc -std=c++17
bz.cc: In member function ‘void
RiskAnalysis::RunAnalysis(std::optional<RiskAnalysis::Context>)’:
bz.cc:40:25: internal compiler error: tree check: expected var_decl or
field_decl or function_decl or type_decl or template_decl, have using_decl in
build_deduction_guide, at cp/pt.c:25636
ext::scope_guard([] {});
^
0x15d5158 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/home/marek/src/gcc/gcc/tree.c:9335
0x82674b tree_check5(tree_node*, char const*, int, char const*, tree_code,
tree_code, tree_code, tree_code, tree_code)
/home/marek/src/gcc/gcc/tree.h:3223
0xa71f40 build_deduction_guide
/home/marek/src/gcc/gcc/cp/pt.c:25636
0xa74140 do_class_deduction
/home/marek/src/gcc/gcc/cp/pt.c:25850
0xa74955 do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context, tree_node*, int)
/home/marek/src/gcc/gcc/cp/pt.c:25978
0xb110d1 build_functional_cast(tree_node*, tree_node*, int)
/home/marek/src/gcc/gcc/cp/typeck2.c:2088
0x9cefcb cp_parser_functional_cast
/home/marek/src/gcc/gcc/cp/parser.c:27250
0x9a6287 cp_parser_postfix_expression
/home/marek/src/gcc/gcc/cp/parser.c:6952
0x9a9b63 cp_parser_unary_expression
/home/marek/src/gcc/gcc/cp/parser.c:8318
0x9aac7f cp_parser_cast_expression
/home/marek/src/gcc/gcc/cp/parser.c:9086
0x9aad79 cp_parser_binary_expression
/home/marek/src/gcc/gcc/cp/parser.c:9187
0x9abad7 cp_parser_assignment_expression
/home/marek/src/gcc/gcc/cp/parser.c:9476
0x9abe74 cp_parser_expression
/home/marek/src/gcc/gcc/cp/parser.c:9645
0x9aefee cp_parser_expression_statement
/home/marek/src/gcc/gcc/cp/parser.c:11112
0x9ae8fb cp_parser_statement
/home/marek/src/gcc/gcc/cp/parser.c:10916
0x9af64d cp_parser_statement_seq_opt
/home/marek/src/gcc/gcc/cp/parser.c:11255
0x9af543 cp_parser_compound_statement
/home/marek/src/gcc/gcc/cp/parser.c:11209
0x9c3eaa cp_parser_function_body
/home/marek/src/gcc/gcc/cp/parser.c:21750
0x9c416d cp_parser_ctor_initializer_opt_and_function_body
/home/marek/src/gcc/gcc/cp/parser.c:21787
0x9cdad1 cp_parser_function_definition_after_declarator
/home/marek/src/gcc/gcc/cp/parser.c:26688
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-593829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 09:32:14 2018
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Subject: [Bug c++/84434] [8 Regression] internal compiler error: tree check: expected var_decl or field_decl or function_decl or type_decl or template_decl, have using_decl in build_deduction_guide, at cp/pt.c:25636
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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> ---
Started with r252005.
The ICE goes away if I remove "~scope_guard();".
>From gcc-bugs-return-593831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 10:47:11 2018
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Subject: [Bug sanitizer/67899] build failure in the sanitizer libs on sparc-linux-gnu
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |ebotcazou at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed a while ago.
*** This bug has been marked as a duplicate of bug 78532 ***
>From gcc-bugs-return-593830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 10:25:37 2018
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Subject: [Bug middle-end/84016] [8 Regression] Spec2000 regression around Jan 14 and Jan 19 2018
Date: Sun, 18 Feb 2018 10:47:00 -0000
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--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I can confirm that gamess is fixed. In addition tonto's regression from earlier
cost tuning was fixed as well. There is nice improvement to galgel
(15400->15800) which is not fixing earlier regression and apsi (4580->4680)
Zhere is small regression on zeusmp (39.6->39). Apsi is not on best score so
far.
There is also a noticeable code size reduction.
So it looks really good!
>From spec2000 we stll have mgrid, facerec and fma3d. facerec is related to code
size as it went up and down 19% during inliner tuning. It is not up with final
values and may be worth to investigate it.
tfft of polyhedron is aslso still regressing. Martin, perhaps you can bisect
that one as it seems most consistent?
Honza
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Subject: [Bug sanitizer/78532] [7 Regression] libsanitizer fails to build on sparc64-linux-gnu
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |aaro.koskinen at iki dot fi
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 67899 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-593833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 12:25:47 2018
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Subject: [Bug c++/84435] New: -Wliteral-suffix warns on a using-directive
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Bug ID: 84435
Summary: -Wliteral-suffix warns on a using-directive
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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The following brief snippet wrongly triggers `-Wliteral-suffix`:
#include <string>
using std::string_literals::operator""s;
GCC 7.3.0's output:
<source>:2:37: warning: literal operator suffixes not preceded by '_' are
reserved for future standardization [-Wliteral-suffix]
using std::string_literals::operator""s;
^~~
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84381
--- Comment #8 from janus at gcc dot gnu.org ---
Author: janus
Date: Sun Feb 18 12:29:09 2018
New Revision: 257789
URL: https://gcc.gnu.org/viewcvs?rev=257789&root=gcc&view=rev
Log:
2018-02-18 Janus Weil <janus@gcc.gnu.org>
PR fortran/84381
* gfortran.dg/io_real_boz2.f90: Remove option "-fall-intrinsics".
* gfortran.dg/pointer_intent_3.f90: Ditto.
* gfortran.dg/proc_ptr_common_1.f90: Ditto.
* gfortran.dg/protected_3.f90: Ditto.
* gfortran.dg/protected_4.f90: Ditto.
* gfortran.dg/protected_5.f90: Ditto.
* gfortran.dg/protected_6.f90: Ditto.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/io_real_boz2.f90
trunk/gcc/testsuite/gfortran.dg/pointer_intent_3.f90
trunk/gcc/testsuite/gfortran.dg/proc_ptr_common_1.f90
trunk/gcc/testsuite/gfortran.dg/protected_3.f90
trunk/gcc/testsuite/gfortran.dg/protected_4.f90
trunk/gcc/testsuite/gfortran.dg/protected_5.f90
trunk/gcc/testsuite/gfortran.dg/protected_6.f90
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From: "mferoldif at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84436] New: Missed optimization with switch on enum constants returning the same value
Date: Sun, 18 Feb 2018 13:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84436
Bug ID: 84436
Summary: Missed optimization with switch on enum constants
returning the same value
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: c++
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The following snippet:
enum class E
{
A, B, C,
};
int foo(E e)
{
switch (e)
{
case E::A: return 0;
case E::B: return 1;
case E::C: return 2;
}
}
Produces the following ineffective code:
foo(E):
cmp edi, 1
mov eax, 1
je .L1
cmp edi, 2
mov eax, 2
je .L1
xor eax, eax
.L1:
rep ret
There is no reason why it should not produce a single `mov eax, edi`
and ret instruction.
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Subject: [Bug target/84437] New: long long casting breaks PDP-11 with -m10 model option (includes trivial reproducer)
Date: Sun, 18 Feb 2018 13:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84437
Bug ID: 84437
Summary: long long casting breaks PDP-11 with -m10 model option
(includes trivial reproducer)
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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long long x(int y)
{
return y;
}
pdp11-aout-gcc -m10 -S /tmp/3.c
/tmp/3.c: In function ‘x’:
/tmp/3.c:4:1: error: unrecognizable insn:
}
^
(insn 7 6 8 2 (set (reg:HI 24)
(ashift:HI (reg:HI 23)
(const_int -15 [0xfffffffffffffff1]))) "/tmp/3.c":3 -1
(nil))
/tmp/3.c:4:1: internal compiler error: in extract_insn, at recog.c:2311
0x8d8b48 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc-7.3.0/gcc/rtl-error.c:108
0x8d8b79 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc-7.3.0/gcc/rtl-error.c:116
0x8ae40f extract_insn(rtx_insn*)
../../gcc-7.3.0/gcc/recog.c:2311
0x6fe3f3 instantiate_virtual_regs_in_insn
../../gcc-7.3.0/gcc/function.c:1589
0x6fe3f3 instantiate_virtual_regs
../../gcc-7.3.0/gcc/function.c:1957
0x6fe3f3 execute
../../gcc-7.3.0/gcc/function.c:2006
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Subject: [Bug target/84438] New: Another code pattern that breaks PDP11 with -m10: including reproducer code
Date: Sun, 18 Feb 2018 14:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84438
Bug ID: 84438
Summary: Another code pattern that breaks PDP11 with -m10:
including reproducer code
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 43447
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43447&action=edit
Example showing the bug
The attached function blows up the compiler with -m10
(gcc 7.3.0 pdp11-aout host is linux 64bit)
tmp/5.c: In function ‘div10quickm’:
/tmp/5.c:18:1: error: unrecognizable insn:
}
^
(insn 11 10 12 2 (set (reg:SI 23 [ _2 ])
(ashift:SI (reg:SI 23 [ _2 ])
(const_int -1 [0xffffffffffffffff]))) "/tmp/5.c":7 -1
(expr_list:REG_EQUAL (lshiftrt:SI (reg:SI 37)
(const_int 2 [0x2]))
(nil)))
/tmp/5.c:18:1: internal compiler error: in extract_insn, at recog.c:2311
0x8d8b48 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc-7.3.0/gcc/rtl-error.c:108
0x8d8b79 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc-7.3.0/gcc/rtl-error.c:116
0x8ae40f extract_insn(rtx_insn*)
../../gcc-7.3.0/gcc/recog.c:2311
0x6fe3f3 instantiate_virtual_regs_in_insn
../../gcc-7.3.0/gcc/function.c:1589
0x6fe3f3 instantiate_virtual_regs
../../gcc-7.3.0/gcc/function.c:1957
0x6fe3f3 execute
../../gcc-7.3.0/gcc/function.c:2006
>From gcc-bugs-return-593838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 14:24:49 2018
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Subject: [Bug libfortran/84439] New: call to backtrace fails after about 6000 iterations (32-bit executable)
Date: Sun, 18 Feb 2018 14:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84439
Bug ID: 84439
Summary: call to backtrace fails after about 6000 iterations
(32-bit executable)
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 43448
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43448&action=edit
Test calling backtrace() repeatedly, fails after about 5600 iteration (32-bit
executable)
There appears to be a memory leak in backtrace(). At about 5500 iterations mmap
complains about insufficient memory and stack trace no longer shows function
names:
[...]
#0 0xf7667245 in ???
#1 0xf7667289 in ???
#2 0x804874b in fun5_
at [...]/gf_backtrace.f:44
#3 0x80486c6 in fun4_
at [...]/gf_backtrace.f:37
#4 0x80486b3 in fun3_
at [...]/gf_backtrace.f:31
#5 0x80486a0 in fun2_
at [...]/gf_backtrace.f:25
#6 0x804868d in fun1_
at [...]/gf_backtrace.f:19
#7 0x804877b in testbacktrace
at [...]/gf_backtrace.f:12
#8 0x80487ce in main
at [...]/gf_backtrace.f:14
5696 calls to backtrace()
Could not print backtrace: mmap: Cannot allocate memory
#0 0xf7633273
#1 0xf7633289
#2 0x80487bd
#3 0x804871a
#4 0x80486f2
#5 0x80486ca
#6 0x80486a2
#7 0x8048802
#8 0x8048855
#9 0xf73c0672
#10 0x80485a0
[fun5 ( 46)] 5697 calls to backtrace()
[...]
System: OpenSUSE 42.3, x86_64, kernel 4.4.114. Test program is attached,
compile with :
gfortran -m32 -o bug-report-backtrace -g -Wall -Wextra -std=gnu
bug-report-backtrace.f
Thanks
>From gcc-bugs-return-593839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 14:42:08 2018
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Subject: [Bug libfortran/84439] call to backtrace fails after about 6000 iterations (32-bit executable)
Date: Sun, 18 Feb 2018 15:30:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-02-18
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
On x86_64-apple-darwin17 I get
...
99999 calls to backtrace()
#0 0x16919f
#1 0x1691b9
#2 0x3ad0f
#3 0x3ac7a
#4 0x3ac5e
#5 0x3ac42
#6 0x3ac26
#7 0x3ad57
#8 0x3ad9f
***** calls to backtrace()
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Subject: [Bug driver/84440] New: unrecognized command line option '-Wno-format-invalid-specifier'
Date: Sun, 18 Feb 2018 15:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84440
Bug ID: 84440
Summary: unrecognized command line option
'-Wno-format-invalid-specifier'
Product: gcc
Version: 7.2.1
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Format attribute is usually used with
the custom printf-alike funcs. It is not
unusual for those funcs to implement more
format specifiers than printf() does.
clang has '-Wno-format-invalid-specifier'
to avoid checking those, and only check
the printf-compatible subset. But gcc
only says this:
---
cc1: warning: unrecognized command line option '-Wno-format-invalid-specifier'
---
Would be nice to have this option, as
it increases the usability of the
format-checking attributes. Plus the
better compatibility with clang.
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Subject: [Bug fortran/84412] [7/8 Regression] Erroneous "Inquire statement identifies an internal file" error
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--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Feb 18 15:32:39 2018
New Revision: 257791
URL: https://gcc.gnu.org/viewcvs?rev=257791&root=gcc&view=rev
Log:
2018-02-18 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/84412
* io/transfer.c (finalize_transfer): After completng an internal unit
I/O operation, clear internal_unit_kind.
Added:
trunk/gcc/testsuite/gfortran.dg/inquire_18.f90
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/transfer.c
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Subject: [Bug libstdc++/84367] [C++11] std::ostringstream stops inserting after multiple call to move assignment operator
Date: Sun, 18 Feb 2018 16:12:00 -0000
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--- Comment #2 from Frederic Tingaud <ftingaud at gmail dot com> ---
I reran the test with GCC 7.3, but got the same error:
#include <sstream>
#include <cassert>
#include <iostream>
int test()
{
std::ostringstream oss;
std::cerr << "\nRunning with GCC v" << __GNUC__ << "." << __GNUC_MINOR__ <<
"." << __GNUC_PATCHLEVEL__ << " - libc++=" << __GLIBCXX__ << std::endl;
for (int i = 0; i < 100; ++i) {
oss << "abc";
std::cerr << i << " ";
assert(oss.str() == "abc");
oss = std::ostringstream();
}
return 0;
}
output:
Running with GCC v7.3.0 - libc++=20180125
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
file.cpp:13: int test(): Assertion `oss.str() == "abc"' failed.
Aborted
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--- Comment #20 from John David Anglin <danglin at gcc dot gnu.org> ---
// { dg-additional-options "-latomic" { target libatomic_available } }
doesn't work:
spawn /test/gnu/gcc/objdir/./gcc/xg++ -shared-libgcc
-B/test/gnu/gcc/objdir/./gc
c -nostdinc++ -L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src
-L/t
est/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/
objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu/gcc/gcc-8/h
ppa2.0w-hp-hpux11.11/bin/ -B/opt/gnu/gcc/gcc-8/hppa2.0w-hp-hpux11.11/lib/
-isyst
em /opt/gnu/gcc/gcc-8/hppa2.0w-hp-hpux11.11/include -isystem
/opt/gnu/gcc/gcc-8/
hppa2.0w-hp-hpux11.11/sys-include
-B/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/.
/libstdc++-v3/src/.libs -fmessage-length=0 -fno-show-column -g -O2
-DLOCALEDIR="
." -nostdinc++
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include
/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/libstdc+
+-v3/include/backward -I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util
libatomic_
available10911.c -latomic -fno-diagnostics-show-caret -fdiagnostics-color=never
./libtestc++.a
-L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src/fil
esystem/.libs -lm -o libatomic_available10911.exe
/usr/ccs/bin/ld: Can't find library: "atomic"
collect2: error: ld returned 1 exit status
In this build, we the following library path:
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libatomic/.libs
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Subject: [Bug fortran/84412] [7/8 Regression] Erroneous "Inquire statement identifies an internal file" error
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--- Comment #4 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Feb 18 16:30:42 2018
New Revision: 257793
URL: https://gcc.gnu.org/viewcvs?rev=257793&root=gcc&view=rev
Log:
2018-02-18 Jerry DeLisle <jvdelisle@gcc.gnu.org>
Backport from trunk
PR libgfortran/84412
* io/transfer.c (finalize_transfer): After completng an internal unit
I/O operation, clear internal_unit_kind.
* gfortran.dg/inquire_18.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/inquire_18.f90
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/libgfortran/ChangeLog
branches/gcc-7-branch/libgfortran/io/transfer.c
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Subject: [Bug fortran/84412] [7/8 Regression] Erroneous "Inquire statement identifies an internal file" error
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I muffed the testsuite changelog on the first commit and have fixed that.
This is now fixed on trunk (8) and 7
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Subject: [Bug target/82005] [8 regression] early lto debug creates invalid assembly on Darwin
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--- Comment #29 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> How do the remaining failures look like?
Part of them are darwin specific and several have already been reported (see
https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=NEW&bug_status=WAITING&bug_status=ASSIGNED&bug_status=UNCONFIRMED&bug_status=REOPENED&email1=dominiq%40lps.ens.fr&emailassigned_to1=1&emailreporter1=1&emailtype1=exact&list_id=201803).
Another part is also seen on linux (see
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01178.html).
Digging through ~500 failures is no fun and I'll wait for some fixes for the
above.
However I have restore my testing of the gfortran test suite with -g -flto and
I see the following new failures:
FAIL: gfortran.dg/namelist_14.f90 -g -flto (internal compiler error)
FAIL: gfortran.dg/namelist_14.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_69.f90 -g -flto (internal compiler error)
FAIL: gfortran.dg/namelist_69.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_70.f90 -g -flto (internal compiler error)
FAIL: gfortran.dg/namelist_70.f90 -g -flto (test for excess errors)
all of them of the kind
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/namelist_14.f90: In function 'foo':
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/namelist_14.f90:96: internal compiler
error: in add_dwarf_attr, at dwarf2out.c:4353
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Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Sun, 18 Feb 2018 19:01:00 -0000
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--- Comment #21 from dave.anglin at bell dot net ---
On 2018-02-18 11:12 AM, danglin at gcc dot gnu.org wrote:
> // { dg-additional-options "-latomic" { target libatomic_available } }
>
> doesn't work:
The attached hack does work but it depends on the relative placement of
the libatomic and
libstdc++ directories.
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Subject: [Bug c++/84441] New: Internal compiler error
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Bug ID: 84441
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Created attachment 43450
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43450&action=edit
Preprocessed source code.
gcc 4.x and gcc 5.x compiles the following snippet, version 6.x and 7.x fails.
The compiler output is
/tmp/bug_report.cpp: In constructor 'derived::derived(int)':
/tmp/bug_report.cpp:15:84: internal compiler error: in assign_temp, at
function.c:968
( int n ) : base( n>=0 ? make_base( 1, n ) : make_base( -1, (size_t)0-n ) ) {
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccye5Pzm.out file, please attach this to
your bugreport.
+===+
#include <string>
struct base
{
typedef std::string string;
string r;
int e;
};
base make_base( int, size_t n );
struct derived : public base
{
derived( int n ) : base( n>=0 ? make_base( 1, n ) : make_base( -1,
(size_t)0-n ) ) { }
};
derived f() { return derived(1); }
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From: "jyong at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/70401] [c++1z on mingw]compile variadic template failed
Date: Sun, 18 Feb 2018 19:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70401
--- Comment #6 from jyong at gcc dot gnu.org ---
I don't think this is mingw specific, I get the same error on Linux with
gcc-7.3.
g++ -std=c++1z variadic.cpp -o aa
variadic.cpp: In instantiation of ‘std::ostream& operator<<(std::ostream&,
const std::tuple<_Tps ...>&) [with T = {long unsigned int, long unsigned int,
const char*, long unsigned int, const char*, const char*, long unsigned int,
long unsigned int, const char*, const char*, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, long
unsigned int, const char*, long unsigned int, const char*}; std::ostream =
std::basic_ostream<char>]’:
variadic.cpp:134:54: required from here
variadic.cpp:114:7: error: call of overloaded ‘apply(const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, const
char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&& ...)>&,
const std::tuple<long unsigned int, long unsigned int, const char*, long
unsigned int, const char*, const char*, long unsigned int, long unsigned int,
const char*, const char*, long unsigned int, const char*, long unsigned int,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, const char*>&)’ is ambiguous
apply(printer,toprint);
~~~~~^~~~~~~~~~~~~~~~~
variadic.cpp:106:6: note: candidate: auto apply(F&&, Tuple&&) [with F = const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, const
char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&& ...)>&;
Tuple = const std::tuple<long unsigned int, long unsigned int, const char*,
long unsigned int, const char*, const char*, long unsigned int, long unsigned
int, const char*, const char*, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*, long unsigned int, const char*>&]
auto apply(F&& f, Tuple&& t) {
^~~~~
In file included from variadic.cpp:2:0:
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/tuple:1668:5: note:
candidate: constexpr decltype(auto) std::apply(_Fn&&, _Tuple&&) [with _Fn =
const operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long
unsigned int, long unsigned int, const char*, long unsigned int, const char*,
const char*, long unsigned int, long unsigned int, const char*, const char*,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*, long unsigned int,
const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&; _Tuple = const std::tuple<long unsigned int, long unsigned int, const
char*, long unsigned int, const char*, const char*, long unsigned int, long
unsigned int, const char*, const char*, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, long unsigned
int, const char*, long unsigned int, const char*>&]
apply(_Fn&& __f, _Tuple&& __t)
^~~~~
variadic.cpp: In instantiation of ‘std::ostream& operator<<(std::ostream&,
const std::tuple<_Tps ...>&) [with T = {long unsigned int, long unsigned int,
const char*, long unsigned int, const char*, const char*, long unsigned int,
long unsigned int, const char*, const char*, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, long
unsigned int, const char*, long unsigned int, const char*, const char*, long
unsigned int, long unsigned int, const char*, const char*, long unsigned int,
const char*, long unsigned int, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, const
char*, const char*, long unsigned int, long unsigned int, const char*, const
char*, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*, long unsigned int, long unsigned int, const char*}; std::ostream =
std::basic_ostream<char>]’:
variadic.cpp:135:53: required from here
variadic.cpp:114:7: error: call of overloaded ‘apply(const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, const
char*, const char*, long unsigned int, long unsigned int, const char*, const
char*, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*, long unsigned int, long unsigned int, const char*, long unsigned
int, const char*, const char*, long unsigned int, long unsigned int, const
char*, const char*, long unsigned int, const char*, long unsigned int, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, const char*, const char*, long unsigned int, long unsigned
int, const char*, const char*, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&, const std::tuple<long unsigned int, long unsigned int, const char*,
long unsigned int, const char*, const char*, long unsigned int, long unsigned
int, const char*, const char*, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*, long unsigned int, const char*, const char*, long unsigned int,
long unsigned int, const char*, const char*, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, long
unsigned int, const char*, long unsigned int, const char*, const char*, long
unsigned int, long unsigned int, const char*, const char*, long unsigned int,
const char*, long unsigned int, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*>&)’ is ambiguous
apply(printer,toprint);
~~~~~^~~~~~~~~~~~~~~~~
variadic.cpp:106:6: note: candidate: auto apply(F&&, Tuple&&) [with F = const
operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long unsigned
int, long unsigned int, const char*, long unsigned int, const char*, const
char*, long unsigned int, long unsigned int, const char*, const char*, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, long unsigned int, const char*, long unsigned int, const
char*, const char*, long unsigned int, long unsigned int, const char*, const
char*, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*, long unsigned int, long unsigned int, const char*, long unsigned
int, const char*, const char*, long unsigned int, long unsigned int, const
char*, const char*, long unsigned int, const char*, long unsigned int, long
unsigned int, const char*, long unsigned int, long unsigned int, const char*,
long unsigned int, const char*, const char*, long unsigned int, long unsigned
int, const char*, const char*, long unsigned int, const char*, long unsigned
int, long unsigned int, const char*, long unsigned int, long unsigned int,
const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&; Tuple = const std::tuple<long unsigned int, long unsigned int, const
char*, long unsigned int, const char*, const char*, long unsigned int, long
unsigned int, const char*, const char*, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, long unsigned
int, const char*, long unsigned int, const char*, const char*, long unsigned
int, long unsigned int, const char*, const char*, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*, long unsigned int,
long unsigned int, const char*, long unsigned int, const char*, const char*,
long unsigned int, long unsigned int, const char*, const char*, long unsigned
int, const char*, long unsigned int, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, const char*,
const char*, long unsigned int, long unsigned int, const char*, const char*,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*>&]
auto apply(F&& f, Tuple&& t) {
^~~~~
In file included from variadic.cpp:2:0:
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/include/g++-v7/tuple:1668:5: note:
candidate: constexpr decltype(auto) std::apply(_Fn&&, _Tuple&&) [with _Fn =
const operator<<(std::ostream&, const std::tuple<_Tps ...>&) [with T = {long
unsigned int, long unsigned int, const char*, long unsigned int, const char*,
const char*, long unsigned int, long unsigned int, const char*, const char*,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*, long unsigned int,
const char*, const char*, long unsigned int, long unsigned int, const char*,
const char*, long unsigned int, const char*, long unsigned int, long unsigned
int, const char*, long unsigned int, long unsigned int, const char*, long
unsigned int, const char*, const char*, long unsigned int, long unsigned int,
const char*, const char*, long unsigned int, const char*, long unsigned int,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, const char*, const char*, long unsigned int, long
unsigned int, const char*, const char*, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, long unsigned
int, const char*}; std::ostream = std::basic_ostream<char>]::<lambda(auto:1&&
...)>&; _Tuple = const std::tuple<long unsigned int, long unsigned int, const
char*, long unsigned int, const char*, const char*, long unsigned int, long
unsigned int, const char*, const char*, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, long unsigned
int, const char*, long unsigned int, const char*, const char*, long unsigned
int, long unsigned int, const char*, const char*, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*, long unsigned int,
long unsigned int, const char*, long unsigned int, const char*, const char*,
long unsigned int, long unsigned int, const char*, const char*, long unsigned
int, const char*, long unsigned int, long unsigned int, const char*, long
unsigned int, long unsigned int, const char*, long unsigned int, const char*,
const char*, long unsigned int, long unsigned int, const char*, const char*,
long unsigned int, const char*, long unsigned int, long unsigned int, const
char*, long unsigned int, long unsigned int, const char*>&]
apply(_Fn&& __f, _Tuple&& __t)
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Subject: [Bug fortran/81773] [Coarray] Get with vector index on lhs leads to incorrect caf_get_by_ref() call.
Date: Sun, 18 Feb 2018 19:19:00 -0000
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--- Comment #3 from vehre at gcc dot gnu.org ---
Created attachment 43451
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43451&action=edit
Preliminary patch
First shot on fixing the issue. At least for caf_get() it fixes the issue.
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Subject: [Bug libstdc++/84442] New: FAIL: 30_threads/thread/cons/terminate.cc (test for excess errors)
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Bug ID: 84442
Summary: FAIL: 30_threads/thread/cons/terminate.cc (test for
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Target Milestone: ---
Host: hppa*-*-hpux11*
Target: hppa*-*-hpux11*
Build: hppa*-*-hpux11*
spawn /test/gnu/gcc/objdir/./gcc/xg++ -shared-libgcc
-B/test/gnu/gcc/objdir/./gc
c -nostdinc++ -L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src
-L/t
est/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/
objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu/gcc/gcc-8/h
ppa2.0w-hp-hpux11.11/bin/ -B/opt/gnu/gcc/gcc-8/hppa2.0w-hp-hpux11.11/lib/
-isyst
em /opt/gnu/gcc/gcc-8/hppa2.0w-hp-hpux11.11/include -isystem
/opt/gnu/gcc/gcc-8/
hppa2.0w-hp-hpux11.11/sys-include
-B/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/./libstdc++-v3/src/.libs
-fmessage-length=0 -fno-show-column -g -O2 -DLOCALEDIR="." -nostdinc++
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/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/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/30_threads/thread/cons/terminate.cc
-pthread -fno-diagnostics-show-caret -fdiagnostics-color=never ./libtestc++.a
-L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src/filesystem/.libs
-lm -o ./terminate.exe
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/30_threads/thread/cons/terminate.cc:
In function 'void handle_terminate()':
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/30_threads/thread/cons/terminate.cc:31:
error: '_Exit' is not a member of 'std'
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
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--- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Feb 18 19:19:47 2018
New Revision: 257795
URL: https://gcc.gnu.org/viewcvs?rev=257795&root=gcc&view=rev
Log:
2018-02-18 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/84389
* io.c (check_format): Allow FMT_COLON.
* gfortran.dg/dtio_33.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/dtio_33.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/io.c
trunk/gcc/testsuite/ChangeLog
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/70401] [c++1z on mingw]compile variadic template failed
Date: Sun, 18 Feb 2018 19:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70401
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
If that’s the case then apparently this got fixed and then regressed, because
back in November I’m pretty sure x86_64-linux was fine. I’ll double check asap.
In the meanwhile, since the release of 8.1.0 is very close, I’m asking Jakub,
as release manager, to have a look at this from that point of view.
>From gcc-bugs-return-593854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 19:25:08 2018
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Subject: [Bug fortran/84389] Defined output: unexpected compiler error with the use of ":" edit descriptor
Date: Sun, 18 Feb 2018 19:32:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Fixed on gcc 8, no plan to backport.
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Subject: [Bug target/82258] [8 regression] allocate_zerosize_3.f fails since r251949
Date: Sun, 18 Feb 2018 19:38:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P4 |P3
Component|fortran |target
--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to rsandifo@gcc.gnu.org from comment #13)
> I think this is almost certainly a back-end bug, and the same one that
> caused PR83851
Thus, setting to component "target" (and re-setting the priorty to P3).
>From gcc-bugs-return-593856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 19:38:52 2018
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Subject: [Bug fortran/83898] [6/7 Regression] ICE in gfc_conv_expr_descriptor, at fortran/trans-array.c:7181
Date: Sun, 18 Feb 2018 19:44:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
Summary|[6/7/8 Regression] ICE in |[6/7 Regression] ICE in
|gfc_conv_expr_descriptor, |gfc_conv_expr_descriptor,
|at |at
|fortran/trans-array.c:7181 |fortran/trans-array.c:7181
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Hi Paul,
do you plan to backport?
>From gcc-bugs-return-593857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 19:44:31 2018
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Subject: [Bug tree-optimization/84443] New: powerpc suboptimal code generation (shrink wrap unlikely path) for Linux spinlocks
Date: Sun, 18 Feb 2018 19:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84443
Bug ID: 84443
Summary: powerpc suboptimal code generation (shrink wrap
unlikely path) for Linux spinlocks
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Created attachment 43452
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43452&action=edit
testcase with comment at the top describing desired output
A small fast path code gets several non-volatile registers saved on stack, and
a sub-optimal restore in the return path.
The example is derived from (but not identical to) the Linux kernel spinlock
implementation.
Tested with gcc version 8.0.1 20180207 (experimental) [trunk revision 257435]
(Debian 8-20180207-2).
>From gcc-bugs-return-593858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 19:56:14 2018
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Subject: [Bug c++/84444] New: ICE with __builtin_launder and cast
Date: Sun, 18 Feb 2018 20:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84444
Bug ID: 84444
Summary: ICE with __builtin_launder and cast
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
Target Milestone: ---
The following (valid?) code snippet (compiled with "-O") triggers an ICE
since GCC 7.1.0:
=================================================
struct A {};
__SIZE_TYPE__ foo(A* p)
{
return (__SIZE_TYPE__)__builtin_launder(p);
}
=================================================
bug.cc: In function 'long unsigned int foo(A*)':
bug.cc:5:44: internal compiler error: Segmentation fault
return (__SIZE_TYPE__)__builtin_launder(p);
^
0xeb0f4f crash_signal
../../gcc/gcc/toplev.c:325
0xa7fc1a builtin_mathfn_code(tree_node const*)
../../gcc/gcc/builtins.c:7840
0xaf0342 convert_to_integer_1
../../gcc/gcc/convert.c:553
0x8702ef ocp_convert(tree_node*, tree_node*, int, int, int)
../../gcc/gcc/cp/cvt.c:822
0x9e2987 cp_build_c_cast(tree_node*, tree_node*, int)
../../gcc/gcc/cp/typeck.c:7802
0x9e2ada build_c_cast(unsigned int, tree_node*, cp_expr)
../../gcc/gcc/cp/typeck.c:7706
0x911421 cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9075
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x913878 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x91c01b cp_parser_jump_statement
../../gcc/gcc/cp/parser.c:12396
0x91c01b cp_parser_statement
../../gcc/gcc/cp/parser.c:10810
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91ce97 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11209
0x933610 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21750
0x933610 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21787
0x933ec0 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26688
0x934bd7 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:26604
0x934bd7 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19476
0x93bc78 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13038
Please submit a full bug report, [etc.]
>From gcc-bugs-return-593859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 20:01:54 2018
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Subject: [Bug c++/84445] New: ICE with __builtin_launder and virtual function
Date: Sun, 18 Feb 2018 20:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84445
Bug ID: 84445
Summary: ICE with __builtin_launder and virtual function
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
Target Milestone: ---
The following (valid?) code snippet triggers an ICE since GCC 7.1.0:
=================================================
struct A
{
virtual void foo();
};
void bar(A* p)
{
__builtin_launder(p)->foo();
}
=================================================
bug.cc: In function 'void bar(A*)':
bug.cc:8:29: internal compiler error: tree check: expected record_type or
union_type or qual_union_type, have pointer_type in lookup_base, at
cp/search.c:195
__builtin_launder(p)->foo();
^
0x78a40a tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9335
0x99b71e tree_check3(tree_node*, char const*, int, char const*, tree_code,
tree_code, tree_code)
../../gcc/gcc/tree.h:3172
0x99b71e lookup_base(tree_node*, tree_node*, int, base_kind*, int)
../../gcc/gcc/cp/search.c:195
0x847cf4 build_vtbl_ref_1
../../gcc/gcc/cp/class.c:706
0x847d5b build_vfn_ref(tree_node*, tree_node*)
../../gcc/gcc/cp/class.c:737
0x81b76f build_over_call
../../gcc/gcc/cp/call.c:8227
0x81d803 build_new_method_call_1
../../gcc/gcc/cp/call.c:9280
0x81d803 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/gcc/cp/call.c:9355
0x930636 cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7207
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x913878 cp_parser_expression
../../gcc/gcc/cp/parser.c:9645
0x915538 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:11112
0x91b8ad cp_parser_statement
../../gcc/gcc/cp/parser.c:10916
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91ce97 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11209
0x933610 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21750
0x933610 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21787
Please submit a full bug report, [etc.]
>From gcc-bugs-return-593860-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 20:17:36 2018
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Subject: [Bug c++/84446] New: [8 Regression] ICE with broken lambda
Date: Sun, 18 Feb 2018 20:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84446
Bug ID: 84446
Summary: [8 Regression] ICE with broken lambda
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
Target Milestone: ---
The following invalid code snippet triggers an ICE on trunk:
===============================
template<int> void foo()
{
int i,
i = [] { virtual }();
}
===============================
bug.cc: In function 'void foo()':
bug.cc:4:3: error: redeclaration of 'int i'
i = [] { virtual }();
^
bug.cc:3:7: note: 'int i' previously declared here
int i,
^
bug.cc: In lambda function:
bug.cc:4:10: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in template_class_depth, at cp/pt.c:394
i = [] { virtual }();
^
0x78a73c tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9385
0x635a64 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc/gcc/tree.h:3255
0x635a64 template_class_depth(tree_node*)
../../gcc/gcc/cp/pt.c:394
0x90b5c7 cp_parser_function_specifier_opt
../../gcc/gcc/cp/parser.c:13744
0x936708 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13502
0x93bae0 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12916
0x93ca88 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x93d4b9 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:12457
0x91be7b cp_parser_statement
../../gcc/gcc/cp/parser.c:10906
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91d897 cp_parser_lambda_body
../../gcc/gcc/cp/parser.c:10669
0x91d897 cp_parser_lambda_expression
../../gcc/gcc/cp/parser.c:10176
0x91d897 cp_parser_primary_expression
../../gcc/gcc/cp/parser.c:5257
0x9301bc cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:7026
0x930d90 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8318
0x91117f cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:9086
0x91198a cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:9187
0x913164 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9476
0x9122bb cp_parser_constant_expression
../../gcc/gcc/cp/parser.c:9760
0x9130e7 cp_parser_initializer_clause
../../gcc/gcc/cp/parser.c:21890
Please submit a full bug report, [etc.]
The regression was introduced between 2017-08-19 and 2017-09-02.
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84447] New: [8 Regression] ICE with inherited deleted constructor and default argument
Date: Sun, 18 Feb 2018 21:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84447
Bug ID: 84447
Summary: [8 Regression] ICE with inherited deleted constructor
and default argument
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
The following invalid code snippet triggers an ICE on trunk:
=================================================
struct A
{
template<typename T> A(T, T = 0) = delete;
};
struct B : A
{
using A::A;
};
B b(0);
=================================================
bug.cc:11:6: internal compiler error: in tsubst_default_argument, at
cp/pt.c:12184
B b(0);
^
0x6384c6 tsubst_default_argument(tree_node*, int, tree_node*, tree_node*, int)
../../gcc/gcc/cp/pt.c:12184
0x819794 convert_default_arg(tree_node*, tree_node*, tree_node*, int, int)
../../gcc/gcc/cp/call.c:7336
0x81a708 build_over_call
../../gcc/gcc/cp/call.c:7949
0x81d803 build_new_method_call_1
../../gcc/gcc/cp/call.c:9280
0x81d803 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/gcc/cp/call.c:9355
0x81e363 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
../../gcc/gcc/cp/call.c:8883
0x8cc4e3 expand_default_init
../../gcc/gcc/cp/init.c:1889
0x8cc4e3 expand_aggr_init_1
../../gcc/gcc/cp/init.c:2004
0x8cce49 build_aggr_init(tree_node*, tree_node*, int, int)
../../gcc/gcc/cp/init.c:1744
0x881b5f build_aggr_init_full_exprs
../../gcc/gcc/cp/decl.c:6188
0x881b5f check_initializer
../../gcc/gcc/cp/decl.c:6337
0x8996cc cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:7038
0x934883 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19697
0x93bc78 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13038
0x93ca88 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x9409e2 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12761
0x940df1 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12637
0x9410e4 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4559
0x9410e4 c_parse_file()
../../gcc/gcc/cp/parser.c:38860
0xa3f396 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
The regression was introduced between 2017-08-19 and 2017-09-02.
>From gcc-bugs-return-593862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 21:02:03 2018
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84432] [F08] Detect illegal component initialization in pdt_27.f03
Date: Sun, 18 Feb 2018 21:24:00 -0000
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Neil Carlson <neil.n.carlson at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |neil.n.carlson at gmail dot com
--- Comment #2 from Neil Carlson <neil.n.carlson at gmail dot com> ---
One of the corrigenda to F2003 (https://wg5-fortran.org/N1801-N1850/N1823.pdf)
added C447a:
"If component-initialization appears, every type parameter and array
bound of the component shall be an initialization expression."
Corresponds to F08:C458, except "initialization" replaces "colon or constant".
Not sure if there is anything significant between the two (probably is).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84448] New: [6/7/8 Regression] ICE with broken condition in parallel for loop
Date: Sun, 18 Feb 2018 21:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84448
Bug ID: 84448
Summary: [6/7/8 Regression] ICE with broken condition in
parallel for loop
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code, openmp
Severity: normal
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The following invalid code snippet (compiled with "-fopenmp")
triggers an ICE since GCC 6.1.0:
=================================================
struct A
{
operator int() const;
A& operator +=(int);
A& operator ++();
};
void foo(A a, A b)
{
#pragma omp for
for (A i = a; i <=; ++i)
;
}
=================================================
bug.cc: In function 'void foo(A, A)':
bug.cc:11:21: error: expected primary-expression before ';' token
for (A i = a; i <=; ++i)
^
bug.cc:12:5: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in element_mode, at tree.c:12977
;
^
0x78a73c tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9385
0x7901e2 tree_class_check(tree_node const*, tree_code_class, char const*, int,
char const*)
../../gcc/gcc/tree.h:3511
0x7901e2 element_mode(tree_node const*)
../../gcc/gcc/tree.c:12977
0xe17198 HONOR_NANS(tree_node const*)
../../gcc/gcc/real.c:5095
0xbe8d2c fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/gcc/fold-const.c:11132
0xbecd0a fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/gcc/fold-const.c:12328
0xbe4155 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/gcc/fold-const.c:9310
0xc00bec fold(tree_node*)
../../gcc/gcc/fold-const.c:11965
0x86803a cp_fold
../../gcc/gcc/cp/cp-gimplify.c:2280
0x868e0c cp_fold_maybe_rvalue
../../gcc/gcc/cp/cp-gimplify.c:2006
0x9a75f7 handle_omp_for_class_iterator
../../gcc/gcc/cp/semantics.c:7665
0x9a75f7 finish_omp_for(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*, tree_node*, tree_node*, tree_node*, vec<tree_node*,
va_heap, vl_ptr>*, tree_node*)
../../gcc/gcc/cp/semantics.c:8138
0x917251 cp_parser_omp_for_loop
../../gcc/gcc/cp/parser.c:35164
0x93d7d3 cp_parser_omp_for
../../gcc/gcc/cp/parser.c:35362
0x918d34 cp_parser_omp_construct
../../gcc/gcc/cp/parser.c:38080
0x919c27 cp_parser_pragma
../../gcc/gcc/cp/parser.c:38707
0x91c1ec cp_parser_statement
../../gcc/gcc/cp/parser.c:10877
0x91cdc0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11255
0x91ce97 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11209
0x933610 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21750
Please submit a full bug report, [etc.]
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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/83823] [8 Regression] Character length issues with PACK()
Date: Sun, 18 Feb 2018 21:33:00 -0000
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
r254157 is the culprit (r254156 is OK).
Just how this patch has caused this regression isn't quite
clear at first glance... I'll look.
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From: "reichelt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84449] New: [7/8 Regression] ICE with constexpr and deleted destructor
Date: Sun, 18 Feb 2018 21:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84449
Bug ID: 84449
Summary: [7/8 Regression] ICE with constexpr and deleted
destructor
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: normal
Priority: P3
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The following invalid code snippet (compiled with "-std=c++1z")
triggers an ICE since GCC 7.1.0:
================================
struct A
{
constexpr A(int) {}
~A() = delete;
};
struct B
{
A a;
constexpr B() : a(0) {}
};
================================
bug.cc: In constructor 'constexpr B::B()':
bug.cc:10:22: error: use of deleted function 'A::~A()'
constexpr B() : a(0) {}
^
bug.cc:4:3: note: declared here
~A() = delete;
^
bug.cc:10:25: error: use of deleted function 'A::~A()'
constexpr B() : a(0) {}
^
bug.cc:4:3: note: declared here
~A() = delete;
^
bug.cc:10:25: internal compiler error: tree check: expected target_expr, have
error_mark in bot_manip, at cp/tree.c:2906
constexpr B() : a(0) {}
^
0x78a40a tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9335
0x668c3b tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3132
0x668c3b bot_manip
../../gcc/gcc/cp/tree.c:2906
0x115823b 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/gcc/tree.c:11400
0x9bd869 break_out_target_exprs(tree_node*)
../../gcc/gcc/cp/tree.c:3028
0x84d8d1 build_data_member_initialization
../../gcc/gcc/cp/constexpr.c:341
0x84e3fd build_constexpr_constructor_member_initializers
../../gcc/gcc/cp/constexpr.c:592
0x84e3fd massage_constexpr_body
../../gcc/gcc/cp/constexpr.c:726
0x858696 register_constexpr_fundef(tree_node*, tree_node*)
../../gcc/gcc/cp/constexpr.c:848
0x897f7f maybe_save_function_definition
../../gcc/gcc/cp/decl.c:15544
0x897f7f finish_function(bool)
../../gcc/gcc/cp/decl.c:15675
0x933ec9 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26691
0x935b9c cp_parser_late_parsing_for_member
../../gcc/gcc/cp/parser.c:27568
0x927fac cp_parser_class_specifier_1
../../gcc/gcc/cp/parser.c:22716
0x929269 cp_parser_class_specifier
../../gcc/gcc/cp/parser.c:22742
0x929269 cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:16748
0x936416 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13606
0x93bae0 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12916
0x93ca88 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12863
0x9409e2 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12761
Please submit a full bug report, [etc.]
>From gcc-bugs-return-593866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 21:45:45 2018
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |mikpelinux at gmail dot com
--- Comment #1 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Appears this wrong-code was fixed for gcc-8.0 by r251690.
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Subject: [Bug c++/84423] [concepts] ICE with invalid using declaration
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can now reproduce it too.
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Is that fixed in trunk then, or just hidden?
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Subject: [Bug fortran/84432] [F08] Detect illegal component initialization in pdt_27.f03
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-18
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
From the activity I guess this PR is confirmed.
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Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
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Martin Liška <marxin at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 22:16:12 2018
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Subject: [Bug c++/70401] [c++1z] variadic template failed
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
CC|paolo.carlini at oracle dot com |
Summary|[c++1z on mingw]compile |[c++1z] variadic template
|variadic template failed |failed
--- Comment #8 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Ok, I can confirm that we are still rejecting this everywhere (note, not as an
ICE, simply as reported above). Probably, what fooled me back in November, is
that it wasn't clear to me that we got a bunch of issues with C++14 code
rejected with -std=c++1z on the command line. Probably we should also create a
meta-bug.
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Subject: [Bug c++/70401] [c++1z] variadic template failed
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We should add c++17 testing into check-c++, not everybody tests with
check-c++-all.
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|REOPENED |NEW
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
The failure only appears only on some targets (it would be helpful if you
mentioned the target where you see a test fail when posting test results).
The test doesn't fail in my local build on x86_64.
There also is no failure in the results for
hppa-unknown-linux-gnu
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01199.html <<<
hppa2.0w-hp-hpux11.11:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01220.html
ia64-suse-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01211.html
powerpc64le-unknown-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01224.html
x86_64-pc-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01202.html
I do see failures on the following targets:
powerpc-ibm-aix7.2.0.0
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01225.html
aarch64-suse-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01218.html
hppa-unknown-linux-gnu
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01228.html <<<
m68k-unknown-linux-gnu
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01215.html
powerpc64-unknown-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01229.html
s390x-ibm-linux-gnu zEC12:
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01217.html
s390x-ibm-linux-gnu default
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg01212.html
What's interesting is that between two recent hppa-unknown-linux-gnu builds the
test is reported to fail in one but not the other (see <<< above).
>From gcc-bugs-return-593874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 22:51:52 2018
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
Date: Sun, 18 Feb 2018 23:22:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-02-18
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Let me take a look.
>From gcc-bugs-return-593875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 23:22:04 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84449] [7/8 Regression] ICE with constexpr and deleted destructor
Date: Sun, 18 Feb 2018 23:24:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-02-18
CC| |jason at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the top of trunk. The ICE occurs with -std=c++17 as well.
Bisection points to r245612:
r245612 | jason | 2017-02-20 13:18:30 -0500 (Mon, 20 Feb 2017) | 3 lines
PR c++/78139 - destructor needed by new-expression
* call.c (build_special_member_call): Use tf_no_cleanup.
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Subject: [Bug c++/84448] [6/7/8 Regression] ICE with broken condition in parallel for loop
Date: Sun, 18 Feb 2018 23:26:00 -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> ---
Confirmed with the top of trunk. Bisected to r230365 (gcc 6.0.0):
r230365 | jason | 2015-11-13 19:08:05 -0500 (Fri, 13 Nov 2015) | 59 lines
Merge C++ delayed folding branch.
>From gcc-bugs-return-593877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 18 23:26:43 2018
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Subject: [Bug c++/84447] [8 Regression] ICE with inherited deleted constructor and default argument
Date: Sun, 18 Feb 2018 23:28:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisected to r251422 (gcc 8.0.0):
r251422 | jason | 2017-08-29 15:40:08 -0400 (Tue, 29 Aug 2017) | 10 lines
Instantiate default arguments/member initializers once.
Prior to that GCC errors out with:
t.C:11:6: error: use of deleted function ‘B::B(T, T) [with T = int][inherited
from A]’
B b(0);
^
t.C:8:12: note: ‘B::B(T, T) [with T = int][inherited from A]’ is implicitly
deleted because the default definition would be ill-formed:
using A::A;
^
t.C:8:12: error: use of deleted function ‘A::A(T, T) [with T = int]’
t.C:3:24: note: declared here
template<typename T> A(T, T = 0) = delete;
^
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Subject: [Bug c++/84446] [8 Regression] ICE with broken lambda
Date: Sun, 18 Feb 2018 23:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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| |msebor at gcc dot gnu.org
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the top of trunk. ICE introduced in r251433:
r251433 | jason | 2017-08-29 16:37:15 -0400 (Tue, 29 Aug 2017) | 28 lines
Reimplement handling of lambdas in templates.
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From: "steven at uplinklabs dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/84450] New: bootstrap-lto ICE in g-dyntab.adb
Date: Sun, 18 Feb 2018 23:36:00 -0000
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Bug ID: 84450
Summary: bootstrap-lto ICE in g-dyntab.adb
Product: gcc
Version: 7.3.1
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Component: bootstrap
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Reporter: steven at uplinklabs dot net
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This bug has been around for at least a few GCC versions now, but I hadn't
gotten around to reporting it.
My configure flags:
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu \
--prefix=/usr \
--libdir=/usr/lib \
--libexecdir=/usr/lib \
--mandir=/usr/share/man \
--infodir=/usr/share/info \
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ \
--with-build-config=bootstrap-lto \
--disable-libssp \
--disable-libstdcxx-pch \
--disable-libunwind-exceptions \
--disable-werror \
--enable-__cxa_atexit \
--enable-checking=release \
--enable-clocale=gnu \
--enable-gnu-indirect-function \
--enable-gnu-unique-object \
--enable-initfini-array \
--enable-install-libiberty \
--enable-libmpx \
--enable-linker-build-id \
--enable-lto \
--enable-multilib \
--enable-plugin \
--enable-shared \
--enable-threads=posix \
--with-isl \
--with-linker-hash-style=gnu \
--with-multilib-list=m32,m64,mx32 \
--with-system-zlib
Non-bootstrap-lto builds work fine, but if I -do- try a bootstrap-lto build, I
get this:
/build/gcc-multilib/src/gcc/gcc/ada/g-dyntab.adb: In function
‘prep__symbol_table__free’:
/build/gcc-multilib/src/gcc/gcc/ada/g-dyntab.adb:140:9: internal compiler
error: in gen_typedef_die, at dwarf2out.c:24370
end Free;
^
0x8b8125 gen_typedef_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24370
0x8ba02b gen_decl_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25390
0x8b866b gen_type_die_with_usage
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24547
0x8b8de2 gen_type_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24758
0x8ba0aa gen_decl_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25410
0x8b9204 process_scope_var
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24903
0x8b9262 decls_for_scope
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24928
0x8b3d1a gen_subprogram_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:22465
0x8b9f58 gen_decl_die
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25364
0x8badaa dwarf2out_decl
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25879
0x8bae09 dwarf2out_function_decl
/build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25894
0x939efe rest_of_handle_final
/build/gcc-multilib/src/gcc/gcc/final.c:4520
0x93a06c execute
/build/gcc-multilib/src/gcc/gcc/final.c:4562
This is built from gcc-7-branch@257786.
Any more details I can provide?
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Subject: [Bug c++/84445] [7/8 Regression] ICE with __builtin_launder and virtual function
Date: Sun, 18 Feb 2018 23:39:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-18
CC| |msebor at gcc dot gnu.org
Summary|ICE with __builtin_launder |[7/8 Regression] ICE with
|and virtual function |__builtin_launder and
| |virtual function
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to somewhere between r242708 and r242710.
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Subject: [Bug c++/84444] ICE with __builtin_launder and cast
Date: Mon, 19 Feb 2018 00:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-18
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the top of trunk. Doesn't appear to be be a regression (i.e.,
it was introduced with __builtin_launder in r241506.
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Subject: [Bug c++/84441] [6/7/8 Regression] Internal compiler error
Date: Mon, 19 Feb 2018 00:17:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
CC| |msebor at gcc dot gnu.org
Summary|Internal compiler error |[6/7/8 Regression] Internal
| |compiler error
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the top of trunk and the stack trace below:
during RTL pass: expand
pr84441.C: In constructor ‘derived::derived(int)’:
pr84441.C:17:15: internal compiler error: in assign_temp, at function.c:977
(size_t)0-n ) ) { }
^
0xe756e6 assign_temp(tree_node*, int, int)
/ssd/src/gcc/svn/gcc/function.c:977
0xc3ab15 expand_call(tree_node*, rtx_def*, int)
/ssd/src/gcc/svn/gcc/calls.c:3434
0xe0b3ee expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/ssd/src/gcc/svn/gcc/expr.c:10990
0xdfd6d6 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
/ssd/src/gcc/svn/gcc/expr.c:8227
0xdda6ba expand_normal
/ssd/src/gcc/svn/gcc/expr.h:282
0xdf8521 store_field
/ssd/src/gcc/svn/gcc/expr.c:6975
0xdefba7 expand_assignment(tree_node*, tree_node*, bool)
/ssd/src/gcc/svn/gcc/expr.c:5249
0xc59426 expand_call_stmt
/ssd/src/gcc/svn/gcc/cfgexpand.c:2688
0xc5c911 expand_gimple_stmt_1
/ssd/src/gcc/svn/gcc/cfgexpand.c:3624
0xc5d044 expand_gimple_stmt
/ssd/src/gcc/svn/gcc/cfgexpand.c:3790
0xc65757 expand_gimple_basic_block
/ssd/src/gcc/svn/gcc/cfgexpand.c:5819
0xc67357 execute
/ssd/src/gcc/svn/gcc/cfgexpand.c:6425
Please submit a full bug report,
with preprocessed source if appropriate.
The first revision to fail is r228704 (gcc 6.0.0):
r228704 | jason | 2015-10-12 03:58:43 -0400 (Mon, 12 Oct 2015) | 5 lines
PR c++/67557
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Subject: [Bug c++/84429] [8 Regression] ICE capturing variable-sized array
Date: Mon, 19 Feb 2018 00:24:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-02-19
CC| |jason at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the top of trunk. The ICE was introduced in r253265 (gcc
8.0.0):
r253265 | jason | 2017-09-28 15:39:38 -0400 (Thu, 28 Sep 2017) | 16 lines
Use local_specializations to find capture proxies.
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Subject: [Bug c++/84423] [6/7/8 Regression] [concepts] ICE with invalid using declaration
Date: Mon, 19 Feb 2018 03:38:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nathan at gcc dot gnu.org
Summary|[concepts] ICE with invalid |[6/7/8 Regression]
|using declaration |[concepts] ICE with invalid
| |using declaration
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r229629 as the cause of the ICE (gcc 6.0.0):
r229629 | jason | 2015-10-31 12:20:05 -0400 (Sat, 31 Oct 2015) | 15 lines
Implement multiple 'auto' feature from Concepts TS.
Prior to that the code was rejected with:
pr84423.C:1:30: error: invalid use of ‘auto’
template<typename> using A = auto;
^
pr84423.C:5:3: error: ‘A’ was not declared in this scope
B<A> b;
^
pr84423.C:5:4: error: template argument 1 is invalid
B<A> b;
^
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Subject: [Bug fortran/32957] C/Fortran interoperability and -fdefault-integer-8
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #4)
> Created attachment 26187 [details]
> patch to fix some failures with -fdefault-integer-8
>
> I have this patch in my tree for a quite long time. It fixes some failures
> with -fdefault-integer-8 by replacing some implicit kinds with explicit ones.
patches go to the gcc-patches mailing list
>From gcc-bugs-return-593886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 04:26:09 2018
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Subject: [Bug target/59888] Darwin linker error "illegal text-relocation" with -shared
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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=63622,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=63580
--- Comment #14 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Francois-Xavier Coudert from comment #13)
> Might this be related with PR63622 (and thus PR63580)?
These have both been closed.
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Subject: [Bug testsuite/58321] FAIL: gcc.target/i386/memcpy-strategy-3.c scan-assembler-times memcpy 2 on x86_64-apple-darwin*
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> Still present at r220301 (see
> https://gcc.gnu.org/ml/gcc-testresults/2015-01/msg03581.html). Does the
> patch in comment 2 makes sense or is there a better fix?
Try sending it to gcc-patches for review
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Subject: [Bug target/62018] FAIL: gcc.dg/torture/ftrapv-(1|2).c * execution test on x86_64-apple-darwin1[34]
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Resolution|--- |FIXED
--- Comment #32 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #31)
> This PR seems "fixed" (as in silenced) on x86_64-apple-darwin15.
OK I guess I'll close it as FIXED then.
>From gcc-bugs-return-593889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 04:40:35 2018
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
Date: Mon, 19 Feb 2018 04:47:00 -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
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=68264
--- Comment #13 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #8)
> > You might want to double check that it's not a bug in the HP-UX libm.
>
> AFAIU Joseph (comment 2) the test should be skipped on platforms defaulting
> to -fno-math-errno as Darwin.
There has been discussion on making ALL platforms default to -fno-math-errno
lately on gcc-patches: https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01065.html
I assume if that were to happen, it'd make sense just to remove the test
entirely?
>From gcc-bugs-return-593890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 04:47:43 2018
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Subject: [Bug fortran/68289] Missing diagnostic pragmas
Date: Mon, 19 Feb 2018 04:55:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|WAITING |SUSPENDED
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=44054,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=64273
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> IMO implementing the diagnostic pragmas in gfortran will just be a waste of
> time. Thus if someone want to close this PR as WONTFIX, I won't object!
That sounds more like material for putting it in SUSPENDED; WONTFIX is more for
a fundamental disagreement with it rather than just lack of interest, and
WAITING is for when the reporter needs to provide more info.
>From gcc-bugs-return-593891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 04:55:40 2018
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Subject: [Bug c++/84429] [8 Regression] ICE capturing variable-sized array
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>From gcc-bugs-return-593892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 05:46:53 2018
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From: "tolez_xuninada at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84451] New: Multiple invocation of virtual base class constructor in diamond inheritance
Date: Mon, 19 Feb 2018 06:51:00 -0000
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Bug ID: 84451
Summary: Multiple invocation of virtual base class constructor
in diamond inheritance
Product: gcc
Version: 5.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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I have a virtual and multiple inheritance situation: classes E<int> and
F<int> inherits virtually from Root<int> and G<int>
inherits from a wrapper class MultipleInherit<Root<int>,E<int>,F<int>>,
which in turns inherit from E<int> and F<int>. Here's a minimal working
example:
In testbases1.cpp:
#include<iostream>
#include<utility>
#include<type_traits>
using namespace std;
namespace details {
template
<
template <class,class> class BinaryPred,
class FirstOp,
class SecondOp,
class ... RestOp
> struct OneToAll {
static constexpr bool value =
BinaryPred<FirstOp,SecondOp>::value &&
OneToAll<BinaryPred,FirstOp,RestOp...>::value;
};
template
<
template <class,class> class BinaryPred,
class FirstOp,
class SecondOp,
class ... RestOp
>
constexpr bool OneToAll_v =
OneToAll<BinaryPred,FirstOp,SecondOp,RestOp...>::value;
template
<
template <class,class> class BinaryPred,
class FirstOp,
class SecondOp
>
struct OneToAll<BinaryPred,FirstOp,SecondOp> {
static constexpr bool value = BinaryPred<FirstOp,SecondOp>::value;
};
struct EmptyBase {};
template < class VirtualBase, class ... Bases >
struct MultipleInherit :
public
std::conditional_t<OneToAll_v<std::is_base_of,VirtualBase,Bases...>,
EmptyBase,
VirtualBase>,
public Bases...
{
static constexpr std::size_t NBases = sizeof...(Bases)+1;
template < class ... Args >
MultipleInherit(Args&&... args)
:VirtualBase(std::forward<Args>(args)...)
,Bases{std::forward<Args>(args)...}...
{
cout << "MI()\n";
}
};
}
using namespace details;
template <class T>
struct Root {
Root(T& i, const double& d) : ri_(i), d_(d) { cout << "Root()\n"; };
protected:
T& ri_;
double d_;
};
template < class T >
struct E : public virtual Root<T> {
E(T& i, const double& d) : Root<T>(i,d) {
cout << "E()\n";
}
};
template < class T >
struct F : public virtual Root<T> {
F(T& i, const double& d) : Root<T>(i,d) {
cout << "F()\n";
}
};
template < class T >
struct G : public MultipleInherit<Root<T>,E<T>,F<T>> {
using BaseType = MultipleInherit<Root<T>,E<T>,F<T>>;
G(T& i, const double& d) : Root<T>(i,d),BaseType(i,d) {
cout << "G()\n";
}
};
int main(int argc, char* argv[]) {
int i = 3;
double d = 4;
G<int> g(i,d);
}
If I compile with gcc 7.3.0: g++ testbases1.cpp -o testbases1 -g -std=c++14,
I get the expected output:
Root()
E()
F()
MI()
G()
I also tried clang++ which gives the correct answer too. But if I compile with
gcc 5.5.0, I get:
Root()
Root()
E()
Root()
F()
MI()
G()
The gcc 5.5.0 is obviously giving the wrong answer because one would expect
the virtual base is only constructed once in this situation.
>From gcc-bugs-return-593893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 06:51:43 2018
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Subject: [Bug c++/17913] ICE jumping into statement expression
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AK <hiraditya at msn dot com> changed:
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----------------------------------------------------------------------------
CC| |hiraditya at msn dot com
--- Comment #25 from AK <hiraditya at msn dot com> ---
I think this bug is fixed:
void f(void) { 1 ? 1 : ({ a : 1; 1; }); goto a; }
g++-7.3 -O3 -std=c++11 test.c -S -o -
f():
.L2:
jmp .L2
>From gcc-bugs-return-593894-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 06:56:31 2018
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Subject: [Bug c++/22238] Awful error messages with virtual functions
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AK <hiraditya at msn dot com> changed:
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----------------------------------------------------------------------------
CC| |hiraditya at msn dot com
--- Comment #24 from AK <hiraditya at msn dot com> ---
The recent error messages look much better. Maybe we can close this.
prog.cpp: In member function ‘void A::bar()’:
prog.cpp:6:23: error: could not convert ‘A::foo()’ from ‘void’ to ‘bool’
void bar() { if (foo()) ; }
>From gcc-bugs-return-593895-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 07:26:11 2018
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Subject: [Bug fortran/68358] Some tests in gfortran.dg fail when compiled with '-g -flto' and Xcode 7
Date: Mon, 19 Feb 2018 07:51:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://llvm.org/bugs/show_
| |bug.cgi?id=25757
--- Comment #16 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #14)
> (In reply to Nenad Vukicevic from comment #13)
> > For what is worth I filed two bug reports:
>
> Thanks!
>
> > LLVM:
> > https://llvm.org/bugs/show_bug.cgi?id=25757
> >
> > APPLE:
> > Bug 23778972 (not sure how to get URL for this bug)
>
> AFAIK there isn't any way (radr:// URLs are not visible externally)
> Some folks have an "unofficial" external radar site, but not sure how
> successful that is in progressing bug reports.
>
Link to the "unofficial" external site: https://openradar.appspot.com/page/1
(not seeing that bug there though)
>From gcc-bugs-return-593896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 07:51:39 2018
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Subject: [Bug tree-optimization/84452] New: [8 Regression] ICE in expand_simd_clones at gcc/omp-simd-clone.c:1612
Date: Mon, 19 Feb 2018 08:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84452
Bug ID: 84452
Summary: [8 Regression] ICE in expand_simd_clones at
gcc/omp-simd-clone.c:1612
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: segher at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-unknown-linux-gnu
Target: ppc64le-linux-gnu
Probably GCC 8 regression:
$ ppc64le-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr84309.c -Ofast
during GIMPLE pass: vect
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr84309.c: In
function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/i386/pr84309.c:10:1:
internal compiler error: Segmentation fault
foo (void)
^~~
0xb84bff crash_signal
.././../gcc/toplev.c:325
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x00000000012d0bc3 in expand_simd_clones (node=node@entry=0x7ffff69cd2e0)
at .././../gcc/omp-simd-clone.c:1612
#2 0x00000000013085d7 in vect_recog_pow_pattern (stmts=<optimized out>,
type_in=0x7fffffffd0b0, type_out=0x7fffffffd0b8) at
.././../gcc/tree-vect-patterns.c:1118
#3 0x0000000001303fe9 in vect_pattern_recog_1
(recog_func=recog_func@entry=0x1ca16a0 <vect_vect_recog_func_ptrs+64>,
stmts_to_replace=stmts_to_replace@entry=0x7fffffffd100, si=...) at
.././../gcc/tree-vect-patterns.c:4489
#4 0x00000000013089f7 in vect_pattern_recog (vinfo=vinfo@entry=0x1e8bc00) at
.././../gcc/tree-vect-patterns.c:4681
#5 0x0000000000e15a6f in vect_analyze_loop_2 (fatal=<synthetic pointer>:
<optimized out>, loop_vinfo=<optimized out>) at
.././../gcc/tree-vect-loop.c:2161
#6 vect_analyze_loop (loop=loop@entry=0x7ffff67fc770,
orig_loop_vinfo=orig_loop_vinfo@entry=0x0) at .././../gcc/tree-vect-loop.c:2612
#7 0x0000000000e33557 in vectorize_loops () at
.././../gcc/tree-vectorizer.c:664
#8 0x0000000000aa4281 in execute_one_pass (pass=pass@entry=0x1dc3200) at
.././../gcc/passes.c:2497
#9 0x0000000000aa4b41 in execute_pass_list_1 (pass=0x1dc3200) at
.././../gcc/passes.c:2586
#10 0x0000000000aa4b53 in execute_pass_list_1 (pass=0x1dc2a70) at
.././../gcc/passes.c:2587
#11 0x0000000000aa4b53 in execute_pass_list_1 (pass=0x1dc16e0) at
.././../gcc/passes.c:2587
#12 0x0000000000aa4b95 in execute_pass_list (fn=<optimized out>,
pass=<optimized out>) at .././../gcc/passes.c:2597
#13 0x000000000074bcf0 in cgraph_node::expand (this=0x7ffff69cd000) at
.././../gcc/cgraphunit.c:2139
#14 0x000000000074d291 in expand_all_functions () at
.././../gcc/cgraphunit.c:2275
#15 symbol_table::compile (this=this@entry=0x7ffff67fe000) at
.././../gcc/cgraphunit.c:2624
#16 0x000000000074fb67 in symbol_table::compile (this=0x7ffff67fe000) at
.././../gcc/cgraphunit.c:2720
#17 symbol_table::finalize_compilation_unit (this=0x7ffff67fe000) at
.././../gcc/cgraphunit.c:2717
#18 0x0000000000b84ede in compile_file () at .././../gcc/toplev.c:480
#19 0x000000000059fd75 in do_compile () at .././../gcc/toplev.c:2132
#20 toplev::main (this=this@entry=0x7fffffffd58e, argc=<optimized out>,
argc@entry=23, argv=<optimized out>, argv@entry=0x7fffffffd688) at
.././../gcc/toplev.c:2267
#21 0x00000000005a22ab in main (argc=23, argv=0x7fffffffd688) at
.././../gcc/main.c:39
(gdb) p *current_pass
$1 = {<pass_data> = {type = GIMPLE_PASS, name = 0x14d5527 "vect", optinfo_flags
= 36, tv_id = TV_TREE_VECTORIZATION, properties_required = 40,
properties_provided = 0, properties_destroyed = 0, todo_flags_start = 524288,
todo_flags_finish = 0},
_vptr.opt_pass = 0x14dace8 <vtable for (anonymous
namespace)::pass_vectorize+16>, sub = 0x1dc3260, next = 0x1dc32c0,
static_pass_number = 166, m_ctxt = 0x1d9a860}
>From gcc-bugs-return-593897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:02:32 2018
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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++/84453] New: [8 Regression] ICE in build_type_attribute_qual_variant, at attribs.c:1166
Date: Mon, 19 Feb 2018 08:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84453
Bug ID: 84453
Summary: [8 Regression] ICE in
build_type_attribute_qual_variant, at attribs.c:1166
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
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I see it on ppc64le cross compiler:
$ ppc64le-linux-gnu-g++
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/ref-qual14.C -c
-mlongcall
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/ref-qual14.C:9:44:
internal compiler error: in build_type_attribute_qual_variant, at
attribs.c:1166
struct target_class<Ret (Class::*)(Args...)>
^
0x838d35 build_type_attribute_qual_variant(tree_node*, tree_node*, int)
.././../gcc/attribs.c:1166
0x7f55ed cp_build_type_attribute_variant(tree_node*, tree_node*)
.././../gcc/cp/tree.c:4628
0x803e29 strip_typedefs(tree_node*, bool*)
.././../gcc/cp/tree.c:1620
0x8042e0 strip_typedefs(tree_node*, bool*)
.././../gcc/cp/tree.c:1406
0x8044fd strip_typedefs(tree_node*, bool*)
.././../gcc/cp/tree.c:1421
0x7486ec canonicalize_type_argument
.././../gcc/cp/pt.c:7515
0x796383 coerce_template_parms
.././../gcc/cp/pt.c:8324
0x78b92a lookup_template_class_1
.././../gcc/cp/pt.c:8860
0x78b92a lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
.././../gcc/cp/pt.c:9209
0x7d01ad finish_template_type(tree_node*, tree_node*, int)
.././../gcc/cp/semantics.c:3183
0x71fb74 cp_parser_template_id
.././../gcc/cp/parser.c:15824
0x71fd9f cp_parser_class_name
.././../gcc/cp/parser.c:22344
0x72dffe cp_parser_qualifying_entity
.././../gcc/cp/parser.c:6574
0x72dffe cp_parser_nested_name_specifier_opt
.././../gcc/cp/parser.c:6260
0x727cd5 cp_parser_class_head
.././../gcc/cp/parser.c:22832
0x727cd5 cp_parser_class_specifier_1
.././../gcc/cp/parser.c:22428
0x729ab1 cp_parser_class_specifier
.././../gcc/cp/parser.c:22742
0x729ab1 cp_parser_type_specifier
.././../gcc/cp/parser.c:16748
0x737c86 cp_parser_decl_specifier_seq
.././../gcc/cp/parser.c:13606
0x73cf25 cp_parser_single_declaration
.././../gcc/cp/parser.c:27054
Please submit a full bug report,
And I also see it on x86_64-linux-gnu, but I'll need some time to reduce a
test-case.
>From gcc-bugs-return-593898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:08:29 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84454] New: [8 Regression] ICE in invalid_nonstatic_memfn_p at gcc/cp/typeck.c:1882
Date: Mon, 19 Feb 2018 08:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84454
Bug ID: 84454
Summary: [8 Regression] ICE in invalid_nonstatic_memfn_p at
gcc/cp/typeck.c:1882
Product: gcc
Version: unknown
Status: UNCONFIRMED
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Severity: normal
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Starting from r247842 we ICE on:
$ g++ /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/pr67238.C
-Wpacked -fpack-struct
‘
Segmentation fault
return g([]{}, a...);
~^~~~~~~~~~~~
0xdcd60f crash_signal
../../gcc/toplev.c:325
0x850049 invalid_nonstatic_memfn_p(unsigned int, tree_node*, int)
../../gcc/cp/typeck.c:1882
0x82022e finish_decltype_type(tree_node*, bool, int)
../../gcc/cp/semantics.c:8724
0x7cbbe6 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.c:14439
0x6e3e3e dump_template_bindings
../../gcc/cp/error.c:397
0x6e3e3e dump_substitution
../../gcc/cp/error.c:1525
0x6e4a33 dump_substitution
../../gcc/cp/error.c:1673
0x6e4a33 dump_function_decl
../../gcc/cp/error.c:1681
0x6f12af decl_to_string
../../gcc/cp/error.c:3055
0x6f12af cp_printer
../../gcc/cp/error.c:4072
0x16fb9ea pp_format(pretty_printer*, text_info*)
../../gcc/pretty-print.c:1375
0x16fc090 pp_format_verbatim(pretty_printer*, text_info*)
../../gcc/pretty-print.c:1437
0x16fc164 pp_verbatim(pretty_printer*, char const*, ...)
../../gcc/pretty-print.c:1641
0x6e2445 print_instantiation_full_context
../../gcc/cp/error.c:3458
0x6ee025 maybe_print_instantiation_context
../../gcc/cp/error.c:3606
0x6ee025 cp_diagnostic_starter
../../gcc/cp/error.c:3299
0x16eb8fa diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
../../gcc/diagnostic.c:985
0x16ebcbe diagnostic_impl
../../gcc/diagnostic.c:1108
0x16ebfec warning(int, char const*, ...)
../../gcc/diagnostic.c:1199
0xdbf480 finalize_record_size
../../gcc/stor-layout.c:1742
>From gcc-bugs-return-593899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:12:29 2018
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Subject: [Bug c++/84455] New: [8 Regression] ICE in build_call_a at gcc/cp/call.c:389 during error reporting
Date: Mon, 19 Feb 2018 08:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84455
Bug ID: 84455
Summary: [8 Regression] ICE in build_call_a at
gcc/cp/call.c:389 during error reporting
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
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Starting from r251433 we ICE on:
$ g++
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice14.C
--param ggc-min-heapsize=0
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice14.C:32:8:
internal compiler error: Segmentation fault
B<int> a;
^
0xdcd60f crash_signal
../../gcc/toplev.c:325
0x60cf31 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
../../gcc/tree.h:3245
0x60cf31 build_call_a(tree_node*, int, tree_node**)
../../gcc/cp/call.c:389
0x60f4b8 build_cxx_call(tree_node*, int, tree_node**, int)
../../gcc/cp/call.c:8654
0x614994 build_over_call
../../gcc/cp/call.c:8237
0x617e68 build_new_method_call_1
../../gcc/cp/call.c:9277
0x617e68 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
../../gcc/cp/call.c:9346
0x619250 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
../../gcc/cp/call.c:8880
0x6fda97 expand_default_init
../../gcc/cp/init.c:1889
0x6fda97 expand_aggr_init_1
../../gcc/cp/init.c:2004
0x6fe668 build_aggr_init(tree_node*, tree_node*, int, int)
../../gcc/cp/init.c:1744
0x69cfff build_aggr_init_full_exprs
../../gcc/cp/decl.c:6182
0x69cfff check_initializer
../../gcc/cp/decl.c:6331
0x6c58bc cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/cp/decl.c:7032
0x77cbb3 cp_parser_init_declarator
../../gcc/cp/parser.c:19697
0x78541c cp_parser_simple_declaration
../../gcc/cp/parser.c:13038
0x786368 cp_parser_block_declaration
../../gcc/cp/parser.c:12863
0x78b084 cp_parser_declaration
../../gcc/cp/parser.c:12761
0x78b4cb cp_parser_declaration_seq_opt
../../gcc/cp/parser.c:12637
0x78b7d0 cp_parser_translation_unit
../../gcc/cp/parser.c:4559
>From gcc-bugs-return-593900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:50:08 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84348] [7/8 Regression] ICE with invalid friend declaration
Date: Mon, 19 Feb 2018 08:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84348
--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Feb 19 08:49:30 2018
New Revision: 257802
URL: https://gcc.gnu.org/viewcvs?rev=257802&root=gcc&view=rev
Log:
/cp
2018-02-19 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84348
* decl.c (grokdeclarator): Early return error_mark_node upon
ill-formed friend declaration.
/testsuite
2018-02-19 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84348
* g++.dg/cpp0x/auto50.C: New.
* g++.dg/parse/friend12.C: Adjust.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/auto50.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/parse/friend12.C
>From gcc-bugs-return-593901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:54:15 2018
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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Mon, 19 Feb 2018 08:56:00 -0000
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #6 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Also seen on arm* targets:
/gcc/testsuite/g++.dg/template/overload15.C:14:10: error: call of overloaded
'f<0>(char (*)[1])' is ambiguous
/gcc/testsuite/g++.dg/template/overload15.C:15:10: error: no matching function
for call to 'f<0>(char (*)[7])'
Unlike you, I do see the new test pass on aarch64, except if I also use
-mabi=ilp32. Is your aarch64-suse-linux-gnu configured with ilp32 by default?
>From gcc-bugs-return-593902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 08:56:18 2018
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From: "sebastian.peryt at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/84431] Suboptimal code for masked shifts (x86/x86-64)
Date: Mon, 19 Feb 2018 09:08:00 -0000
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Sebastian Peryt <sebastian.peryt at intel dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sebastian.peryt at intel dot com
--- Comment #1 from Sebastian Peryt <sebastian.peryt at intel dot com> ---
Ruslan, can you provide which compilation options you have used to reproduce
this issue?
>From gcc-bugs-return-593903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:08:00 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/83392] FAIL: c-c++-common/ubsan/ptr-overflow-sanitization-1.c scan-tree-dump-times
Date: Mon, 19 Feb 2018 09:18:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok so with -O the difference is in between x86_64 and i586:
i586:
Visiting statement:
p_3 = &b + 2147483649;
which is likely CONSTANT
Lattice value changed to CONSTANT &MEM[(void *)&b + 2147483649B]. Adding SSA
edges to worklist.
marking stmt to be not simulated again
x86_64:
Visiting statement:
p_3 = &b + 9223372036854775809;
which is likely CONSTANT
Lattice value changed to CONSTANT &MEM[(void *)&b + -9223372036854775807B].
Adding SSA edges to worklist.
marking stmt to be not simulated again
It's for reduced test-case:
#define SMAX __PTRDIFF_MAX__
void foo(void)
{
char *p;
char *p2;
char b[1];
char c[1];
p = b + SMAX; /* pointer overflow check is needed */
p = b;
p = b - SMAX; /* pointer overflow check is needed */
p2 = p + SMAX; /* b: pointer overflow check is needed */
}
Hope it's correct, thus I'll disable cycling of optimizations.
Jakub?
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84348] [7 Regression] ICE with invalid friend declaration
Date: Mon, 19 Feb 2018 09:23:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE with |[7 Regression] ICE with
|invalid friend declaration |invalid friend declaration
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed in trunk.
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Subject: [Bug c++/84453] [8 Regression] ICE in build_type_attribute_qual_variant, at attribs.c:1166
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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> ---
Started with r257695.
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Subject: [Bug sanitizer/84428] =q22=dressSanitizer CHECK failed: ../../../sanitizer/asan/asan_interceptors.cc:384 "((__interception::real___cxa_throw)) != (0)" (0x0, 0x0)
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I guess it's build with:
python setup.py install
Please tell me how to use virtualenv to test it locally? Thank you.
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Subject: [Bug c++/84453] [8 Regression] ICE in build_type_attribute_qual_variant, at attribs.c:1166
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
On x86_64-linux-gnu:
$ cat /tmp/ice.ii
struct a {
void b(long() __attribute__((fastcall))) {}
};
$ g++ ice.ii -m32 -c --param ggc-min-expand=0 --param ggc-min-heapsize=0
ice.ii:2:8: internal compiler error: in build_type_attribute_qual_variant, at
attribs.c:1166
void b(long() __attribute__((fastcall))) {}
^
0x8800a5 build_type_attribute_qual_variant(tree_node*, tree_node*, int)
../../gcc/attribs.c:1166
0x83c94d cp_build_type_attribute_variant(tree_node*, tree_node*)
../../gcc/cp/tree.c:4628
0x718c28 write_type
../../gcc/cp/mangle.c:2118
0x717b46 write_type
../../gcc/cp/mangle.c:2303
0x71a564 write_method_parms
../../gcc/cp/mangle.c:2796
0x71a846 write_bare_function_type
../../gcc/cp/mangle.c:2732
0x72238c mangle_decl_string
../../gcc/cp/mangle.c:3792
0x7226f3 get_mangled_id
../../gcc/cp/mangle.c:3814
0x7226f3 mangle_decl(tree_node*)
../../gcc/cp/mangle.c:3852
0x10992f2 decl_assembler_name(tree_node*)
../../gcc/tree.c:687
0x99791f symtab_node::get_comdat_group_id()
../../gcc/cgraph.h:215
0x99791f analyze_functions
../../gcc/cgraphunit.c:1081
0x999282 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2691
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Subject: [Bug c++/84453] [8 Regression] ICE in build_type_attribute_qual_variant, at attribs.c:1166
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
CC| |jason at gcc dot gnu.org
Target Milestone|--- |8.0
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Subject: [Bug c++/84430] [7/8 Regression] ICE with #pragma omp simd in lambda
Date: Mon, 19 Feb 2018 09:39:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r239268.
>From gcc-bugs-return-593910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:40:40 2018
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Subject: [Bug debug/84457] New: [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:40:00 -0000
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Bug ID: 84457
Summary: [8 regression] gcc.dg/guality/pr49888.c fail
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: andrey.y.guskov at intel dot com
Target Milestone: ---
r257631 triggers this:
spawn gdb -nx -nw -quiet -batch -x pr49888.gdb ./pr49888.exe
FAIL: gcc.dg/guality/pr49888.c -O1 line 18 !c == 1
Option set:
-with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-shared
--enable-host-shared --enable-clocale=gnu --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,jit,lto -with-arch=silvermont
--with-cpu=silvermont
>From gcc-bugs-return-593911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:40:41 2018
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Subject: [Bug debug/84458] New: [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:43:00 -0000
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Bug ID: 84458
Summary: [8 regression] gcc.dg/guality/pr49888.c fail
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
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r257631 triggers this:
spawn gdb -nx -nw -quiet -batch -x pr49888.gdb ./pr49888.exe
FAIL: gcc.dg/guality/pr49888.c -O1 line 18 !c == 1
Option set:
-with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-shared
--enable-host-shared --enable-clocale=gnu --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,jit,lto -with-arch=silvermont
--with-cpu=silvermont
>From gcc-bugs-return-593912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:43:04 2018
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Subject: [Bug debug/84459] New: [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:48:00 -0000
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Bug ID: 84459
Summary: [8 regression] gcc.dg/guality/pr49888.c fail
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
r257631 triggers this:
spawn gdb -nx -nw -quiet -batch -x pr49888.gdb ./pr49888.exe
FAIL: gcc.dg/guality/pr49888.c -O1 line 18 !c == 1
Option set:
-with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-shared
--enable-host-shared --enable-clocale=gnu --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,jit,lto -with-arch=silvermont
--with-cpu=silvermont
>From gcc-bugs-return-593913-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:49:31 2018
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Subject: [Bug middle-end/84016] [8 Regression] Spec2000 regression around Jan 14 and Jan 19 2018
Date: Mon, 19 Feb 2018 09:49:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
>
> tfft of polyhedron is aslso still regressing. Martin, perhaps you can bisect
> that one as it seems most consistent?
>
Can't see any difference for both tfft and tfft2 benchmarks on my Haswell
machine. Can you reproduce that locally?
>From gcc-bugs-return-593914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:49:37 2018
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Subject: [Bug c++/84455] [8 Regression] ICE in build_call_a at gcc/cp/call.c:389 during error reporting
Date: Mon, 19 Feb 2018 09:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |ice-on-valid-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-19
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |8.0
Ever confirmed|0 |1
>From gcc-bugs-return-593917-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:51:58 2018
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Subject: [Bug debug/84459] [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:51:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
dup
*** This bug has been marked as a duplicate of bug 84457 ***
>From gcc-bugs-return-593916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:51:31 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/84457] [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:51:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 84458 has been marked as a duplicate of this bug. ***
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Subject: [Bug debug/84458] [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:51:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
dup
*** This bug has been marked as a duplicate of bug 84457 ***
>From gcc-bugs-return-593918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 09:51:59 2018
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Subject: [Bug debug/84457] [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 09:55:00 -0000
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 84459 has been marked as a duplicate of this bug. ***
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/80589] Typing mistakes in two messages
Date: Mon, 19 Feb 2018 09:55:00 -0000
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--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 19 09:54:09 2018
New Revision: 257803
URL: https://gcc.gnu.org/viewcvs?rev=257803&root=gcc&view=rev
Log:
Fix documentation typos (PR other/80589).
2018-02-19 Martin Liska <mliska@suse.cz>
PR other/80589
* doc/invoke.texi: Fix typo.
* params.def (PARAM_MAX_LOOP_HEADER_INSNS): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/invoke.texi
trunk/gcc/params.def
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Subject: [Bug other/80589] Typing mistakes in two messages
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.0
Known to fail|8.0 |
--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
Now should be fixed on trunk.
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Subject: [Bug c++/84455] [8 Regression] ICE in build_call_a at gcc/cp/call.c:389 during error reporting
Date: Mon, 19 Feb 2018 09:59:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43453
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43453&action=edit
gcc8-pr84455.patch
Untested fix. This mirrors what cp_parser_lambda_body does.
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Subject: [Bug debug/84457] [8 regression] gcc.dg/guality/pr49888.c fail
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--- Comment #3 from Andrey Guskov <andrey.y.guskov at intel dot com> ---
Whoops. Sorry. Kept getting an HTTP 504 from post_bug.cgi.
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Subject: [Bug c++/84454] [8 Regression] ICE in invalid_nonstatic_memfn_p at gcc/cp/typeck.c:1882
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Last reconfirmed| |2018-02-19
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Target Milestone|--- |8.0
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Subject: [Bug c++/84454] [8 Regression] ICE in invalid_nonstatic_memfn_p at gcc/cp/typeck.c:1882
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug fortran/67420] gfortran.dg/norm2_3.f90 FAILs
Date: Mon, 19 Feb 2018 10:16:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|SUSPENDED |WAITING
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Given the location of the failure, this is probably a duplicate of PR67420,
> because we use the built-in sqrtl() in NORM2. Marked as SUSPENDED for now.
Self-referencing duplicate!
Looking at the results posted at
https://gcc.gnu.org/ml/gcc-testresults/2017-01/msg00014.html this PR seems
fixed since more than a year.
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Subject: [Bug tree-optimization/84452] [8 Regression] ICE in expand_simd_clones at gcc/omp-simd-clone.c:1612
Date: Mon, 19 Feb 2018 10:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
CC| |jakub at gcc dot gnu.org
Version|unknown |8.0
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |8.0
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, introduced with r257617, will fix.
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Subject: [Bug tree-optimization/84452] [8 Regression] ICE in expand_simd_clones at gcc/omp-simd-clone.c:1612
Date: Mon, 19 Feb 2018 10:21:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43454
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43454&action=edit
gcc8-pr84452.patch
Untested fix.
>From gcc-bugs-return-593928-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:21:08 2018
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 10:26:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #10 from Wilco <wilco at gcc dot gnu.org> ---
The only solution to this is to make a hard choice between Neon and integer
registers before register allocation.
>From gcc-bugs-return-593929-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:26:18 2018
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 10:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vmakarov at gcc dot gnu.org
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>From my completely ARM unaware POV, if NEON is available, it isn't a strict
requirement that NEON must never be used for this, just a matter of
preferences. So perhaps one or two further ?s on the avoid_neon_for_64bits
alternatives to let the RA know it should prefer the GPR alternative which
already contains a single ? and therefore right now is equal preference to the
avoid_neon_for_64bits.
>From gcc-bugs-return-593930-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:29:40 2018
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Subject: [Bug target/84460] New: [8 regression] gcc.target/i386/pr57193.c fail
Date: Mon, 19 Feb 2018 10:30:00 -0000
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Bug ID: 84460
Summary: [8 regression] gcc.target/i386/pr57193.c fail
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r257669 triggers this:
spawn -ignore SIGHUP /work/gcc/xgcc -B/work/gcc/
/source/gcc/testsuite/gcc.target/i386/pr57193.c
-B/work/x86_64-pc-linux-gnu/./libmpx/
-B/work/x86_64-pc-linux-gnu/./libmpx/mpxrt
-L/work/x86_64-pc-linux-gnu/./libmpx/mpxrt/.libs
-B/work/x86_64-pc-linux-gnu/./libmpx/
-B/work/x86_64-pc-linux-gnu/./libmpx/mpxwrap
-L/work/x86_64-pc-linux-gnu/./libmpx/mpxwrap/.libs -fno-diagnostics-show-caret
-fdiagnostics-color=never -O2 -msse2 -mno-sse3 -ffat-lto-objects -S -o
pr57193.s
PASS: gcc.target/i386/pr57193.c (test for excess errors)
FAIL: gcc.target/i386/pr57193.c scan-assembler-times movdqa 2 (found 3 times)
Option set:
-with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-shared
--enable-host-shared --enable-clocale=gnu --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,jit,lto -with-arch=silvermont
--with-cpu=silvermont
>From gcc-bugs-return-593931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:30:46 2018
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82862] [8 Regression] SPEC CPU2006 465.tonto performance regression with r253975 (up to 40% drop for particular loop)
Date: Mon, 19 Feb 2018 10:42:00 -0000
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--- Comment #8 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
I'd say that it's not just fixed but improved with an impressive gain.
It is about +4% on HSW AVX2 and about +8% on SKX AVX512 after r257734 (compared
to r257732) for a 465.tonto SPEC rate.
Comparing to reference r253973 it is about +2% on HSW AVX2 and +18% on SKX
AVX512 (AVX512 was greatly improved in last 3 months).
>From gcc-bugs-return-593932-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:42:11 2018
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Subject: [Bug c++/84461] New: [8 regression] openjdk-10 fails to build
Date: Mon, 19 Feb 2018 10:50:00 -0000
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Bug ID: 84461
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In file included from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/gc/shared/adaptiveSizePolicy.hpp:31,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/gc/shared/genCollectedHeap.hpp:28,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/gc/shared/gcLocker.hpp:29,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/runtime/interfaceSupport.hpp:28,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/prims/methodHandles.hpp:32,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciMethod.hpp:33,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/code/debugInfoRec.hpp:30,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciEnv.hpp:31,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciUtilities.hpp:28,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciNullObject.hpp:30,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciConstant.hpp:29,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/ci/ciArray.hpp:29,
from
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/precompiled/precompiled.hpp:35:
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/memory/metaspaceShared.cpp:
In instantiation of 'static intptr_t* CppVtableCloner<T>::clone_vtable(const
char*, CppVtableInfo*) [with T = ConstantPool; intptr_t = long int]':
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/memory/metaspaceShared.cpp:693:3:
required from here
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/logging/log.hpp:50:115:
error: no match for 'operator<' (operand types are '<unresolved overloaded
function type>' and 'LogLevel::type')
#define log_debug(...) (!log_is_enabled(Debug, __VA_ARGS__)) ? (void)0 :
LogImpl<LOG_TAGS(__VA_ARGS__)>::write<LogLevel::Debug>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
/home/abuild/rpmbuild/BUILD/jdk10-107413b070b9/src/hotspot/share/memory/metaspaceShared.cpp:625:3:
note: in expansion of macro 'log_debug'
log_debug(cds, vtables)("Copying %3d vtable entries for %s", n, name);
^~~~~~~~~
>From gcc-bugs-return-593933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:50:48 2018
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Subject: [Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'
Date: Mon, 19 Feb 2018 10:52:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks Richard!
Now I still see the other issue in dwarf2out:
Breakpoint 1, based_loc_descr (reg=0x7ffff51183a8, offset=...,
initialized=VAR_INIT_STATUS_INITIALIZED) at ../../gcc/dwarf2out.c:14170
warning: Source file is more recent than executable.
14170 elim = strip_offset_and_add (elim, &offset);
(gdb) c
Continuing.
../../gcc/poly-int.h:414:21: runtime error: signed integer overflow:
9223372036854775789 + 48 cannot be represented in type 'long int'
#0 0xaa9c75 in poly_int_pod<1u, long>& poly_int_pod<1u,
long>::operator+=<long>(poly_int_pod<1u, long> const&) ../../gcc/poly-int.h:414
#1 0xaa9266 in strip_offset_and_add(rtx_def*, poly_int_pod<1u, long>*)
../../gcc/rtl.h:4340
#2 0xd4f022 in based_loc_descr ../../gcc/dwarf2out.c:14170
#3 0xd5da4c in mem_loc_descriptor(rtx_def*, machine_mode, machine_mode,
var_init_status) ../../gcc/dwarf2out.c:15643
#4 0xd65a2a in loc_descriptor ../../gcc/dwarf2out.c:16616
...
(gdb) p debug_rtx(elim)
(plus:DI (reg/f:DI 7 sp)
(const_int 48 [0x30]))
$2 = void
(gdb) p offset
$3 = {<poly_int_pod<1, long>> = {coeffs = {9223372036854775789}}, <No data
fields>}
Is it Jakub something we should handle? Do you have a suggestion how to do
that?
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Subject: [Bug target/84460] [8 regression] gcc.target/i386/pr57193.c fail
Date: Mon, 19 Feb 2018 10:54:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
-mtune=generic will solve this.
>From gcc-bugs-return-593934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:52:13 2018
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82989] [7/8 regression ] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 10:54:00 -0000
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--- Comment #12 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> From my completely ARM unaware POV, if NEON is available, it isn't a strict
> requirement that NEON must never be used for this, just a matter of
> preferences. So perhaps one or two further ?s on the avoid_neon_for_64bits
> alternatives to let the RA know it should prefer the GPR alternative which
> already contains a single ? and therefore right now is equal preference to
> the avoid_neon_for_64bits.
The costing model for preferencing is extremely complex and suboptimal. There
are too many bugs in it, it all appears to be written for a CISC ISA (eg. it
assumes it can just replace any register operand with a MEM at no extra cost,
even if such a pattern doesn't exist).
So hacking in some more ?'s is never going to result in good code. The issue is
also made more complex by the fact that expanding 64-bit operations after
register allocation is an extremely bad idea - see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77308.
So today the choice is between generating inefficient ARM code or inefficient
Neon code...
By making this a hard choice early on (only generate ARM, or use Neon when
beneficial) we can actually generate high quality code. I've got patches that
give huge gains and still allow a user to prefer Neon instructions with
-mneon-for-64bits.
>From gcc-bugs-return-593936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:54:23 2018
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Subject: [Bug target/84460] [8 regression] gcc.target/i386/pr57193.c fail
Date: Mon, 19 Feb 2018 10:56:00 -0000
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--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
On Mon, Feb 19, 2018 at 11:30 AM, andrey.y.guskov at intel dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84460
>
> Andrey Guskov <andrey.y.guskov at intel dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Target| |x86_64-*-*
> CC| |uros at gcc dot gnu.org
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>From gcc-bugs-return-593937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 10:56:25 2018
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
Date: Mon, 19 Feb 2018 11:03:00 -0000
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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> ---
It's an invalid code:
$ gcc pr84433.c -Wall -fsanitize=undefined -g &&
UBSAN_OPTIONS="print_stacktrace=1" ./a.out
pr84433.c: In function ‘func’:
pr84433.c:45:1: warning: control reaches end of non-void function
[-Wreturn-type]
}
^
pr84433.c:36:11: runtime error: index 15 out of bounds for type 'structA [15]'
#0 0x400d5a in func /home/marxin/Programming/testcases/pr84433.c:36
#1 0x400edb in main /home/marxin/Programming/testcases/pr84433.c:62
#2 0x7ffff6d20f49 in __libc_start_main (/lib64/libc.so.6+0x20f49)
#3 0x400729 in _start (/home/marxin/Programming/testcases/a.out+0x400729)
B.int1 = 16 expected 16
$ clang pr84433.c -Wall -fsanitize=undefined -g &&
UBSAN_OPTIONS="print_stacktrace=1" ./a.out
pr84433.c:45:1: warning: control reaches end of non-void function
[-Wreturn-type]
}
^
1 warning generated.
pr84433.c:36:3: runtime error: index 15 out of bounds for type 'struct structA
[15]'
#0 0x42019a in func /home/marxin/Programming/testcases/pr84433.c:36:24
#1 0x420753 in main /home/marxin/Programming/testcases/pr84433.c:62:3
#2 0x7ffff6eb1f49 in __libc_start_main (/lib64/libc.so.6+0x20f49)
#3 0x402829 in _start
/home/abuild/rpmbuild/BUILD/glibc-2.26/csu/../sysdeps/x86_64/start.S:120
B.int1 = 16 expected 16
>From gcc-bugs-return-593938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:03:47 2018
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Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
Date: Mon, 19 Feb 2018 11:06:00 -0000
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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. Note that in GCC 8 we generate a better code:
g++ pr84436.C -O2 -c -S -o/dev/stdout
_Z3foo1E:
.LFB0:
movl %edi, %edi
movl CSWTCH.0(,%rdi,4), %eax
ret
.LFE0:
.size _Z3foo1E, .-_Z3foo1E
.section .rodata
.align 8
.type CSWTCH.0, @object
.size CSWTCH.0, 12
CSWTCH.0:
.long 0
.long 1
.long 2
It's clear that it's optimization opportunity. My question is why you don't
simple do:
enum class E
{
A = 0, B, C,
};
int foo(E e)
{
return (int)e;
}
? Is it reduced from a bigger code base?
>From gcc-bugs-return-593939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:06:53 2018
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 11:13:00 -0000
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--- Comment #13 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
In case it's of interest, I did a quick benchmark of my testcase executed in a
loop on a cortex-a8:
Without neon:
12 instructions/iteration
14 cycles/iteration
With neon:
14 instructions/iteration
35.2-35.3 cycles/iteration
(This includes 4 instructions for the loop itself.)
When using neon, the majority of the time is spent in a nasty pipeline stall
for moving data from neon registers to arm registers, which takes a minimum of
20 cycles according to the cortex-a8 TRM.
>From gcc-bugs-return-593940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:13:40 2018
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 11:28:00 -0000
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--- Comment #14 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Matthijs van Duin from comment #13)
> In case it's of interest, I did a quick benchmark of my testcase executed in
> a loop on a cortex-a8:
>
> Without neon:
> 12 instructions/iteration
> 14 cycles/iteration
>
> With neon:
> 14 instructions/iteration
> 35.2-35.3 cycles/iteration
>
> (This includes 4 instructions for the loop itself.)
>
> When using neon, the majority of the time is spent in a nasty pipeline stall
> for moving data from neon registers to arm registers, which takes a minimum
> of 20 cycles according to the cortex-a8 TRM.
Yes on older cores it can be a bad idea to allow accidental use of Neon
instructions. The simplest workaround is to switch off Neon, just use
-mfpu=vfp.
We probably also need to block the register allocator from spilling integer
registers to the FP register file as that would have the same stall (another
thing it really seems to insist on for some odd reason). There are AArch64
patches for this that could be ported to Arm.
>From gcc-bugs-return-593941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:28:36 2018
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From: "mferoldif at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
Date: Mon, 19 Feb 2018 11:39:00 -0000
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--- Comment #2 from Mário Feroldi <mferoldif at gmail dot com> ---
That code (which is just a simplified example) is generated by macros.
>From gcc-bugs-return-593942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:39:32 2018
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
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--- Comment #15 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
(In reply to Wilco from comment #14)
> Yes on older cores it can be a bad idea to allow accidental use of Neon
> instructions. The simplest workaround is to switch off Neon, just use
> -mfpu=vfp.
Sure, though that's not exactly ideal since it is very desirable for the Neon
unit to be used for single-precision floats. (9-10 cycles for add/sub in VFP,
10-12 cycles for mul in VFP, 1 cycle for two add/sub/mul ops in Neon)
>From gcc-bugs-return-593943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:42:33 2018
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Subject: [Bug c++/84449] [7/8 Regression] ICE with constexpr and deleted destructor
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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> ---
Created attachment 43455
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43455&action=edit
gcc8-pr84449.patch
Untested fix.
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Subject: [Bug c++/84429] [8 Regression] ICE capturing variable-sized array
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>From gcc-bugs-return-593945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:44:48 2018
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
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--- Comment #16 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Matthijs van Duin from comment #15)
> (In reply to Wilco from comment #14)
> > Yes on older cores it can be a bad idea to allow accidental use of Neon
> > instructions. The simplest workaround is to switch off Neon, just use
> > -mfpu=vfp.
>
> Sure, though that's not exactly ideal since it is very desirable for the
> Neon unit to be used for single-precision floats. (9-10 cycles for add/sub
> in VFP, 10-12 cycles for mul in VFP, 1 cycle for two add/sub/mul ops in Neon)
That's why it's a workaround until the bug is fixed - assuming the performance
critical functions use both 64-bit integer and 32-bit fp operations, you could
benchmark both options and choose the one that works best for now.
>From gcc-bugs-return-593946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 11:53:57 2018
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Subject: [Bug c++/84447] [8 Regression] ICE with inherited deleted constructor and default argument
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-593948-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 12:11:02 2018
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Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Mon, 19 Feb 2018 12:11:00 -0000
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--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 43456
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43456&action=edit
Possible patch
I think the problem was that the optimisation was dropping
the alignment information, so we ended up using an aligned
rather than an unaligned access.
I don't have access to skylake hardware, but could you
try the attached patch?
>From gcc-bugs-return-593947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 12:01:11 2018
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Subject: [Bug fortran/79854] diagnostics: gfc_conv_constant_to_tree should be gfc_internal_error
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> AFAICT this internal error has never triggered. If someone can come with a
> test for it, this would be nice.
In the meantime, though, I think it'd make sense just to change it to an
internal error anyways (even without a testcase), for translation purposes
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Subject: [Bug fortran/83823] [8 Regression] Character length issues with PACK()
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The problem seems to be the simplifcation which gets the
string length wrong.
>From gcc-bugs-return-593950-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 12:12:45 2018
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Subject: [Bug fortran/83823] [8 Regression] Character length issues with PACK()
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Subject: [Bug c++/84446] [8 Regression] ICE with broken lambda
Date: Mon, 19 Feb 2018 12:14:00 -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> ---
Created attachment 43457
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43457&action=edit
gcc8-pr84446.patch
Untested fix.
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Subject: [Bug c++/84446] [8 Regression] ICE with broken lambda
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
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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> ---
Good, it still makes sense to do a optimization where a part of switch
statements are mapped by such identity function. Let me do it in GCC 9. I'm
planning to do more switch reorganization.
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Subject: [Bug gcov-profile/83877] Make gcov accept a path to the gcda and a path to the gcno file
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Subject: [Bug sanitizer/82183] gcc.dg/sancov/cmp0.c fails on aarch64
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Subject: [Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'
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Subject: [Bug c/81272] libdecnumber/decNumber.c:6032: wrong condition ?
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Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
Note that this is good for identity, but we could also turn a map 0->3, 1->4,
5->8 into x->x+3, or generally any map (with an unreachable default case) into
a polynomial (or some other simple function), the cost of which might be higher
or lower than the jump table. It probably isn't worth going too far in that
direction though.
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From: "christianlupus at web dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84462] New: internal compiler error: in output_constructor_regular_field when creating array of structs (with testcase)
Date: Mon, 19 Feb 2018 12:40:00 -0000
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Bug ID: 84462
Summary: internal compiler error: in
output_constructor_regular_field when creating array
of structs (with testcase)
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: christianlupus at web dot de
Target Milestone: ---
Host: avr
Created attachment 43458
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43458&action=edit
Minimal testcase
To trigger the problem one needs to invocate
# avr-g++ -O0 -v -save-temps -c bug.cpp -o bug.o
on the given input file. This results in the following output:
Reading specs from /usr/lib/gcc/avr/7.3.0/device-specs/specs-avr2
COLLECT_GCC=avr-g++
Target: avr
Configured with: /build/avr-gcc/src/gcc-7-20180125/configure
--disable-install-libiberty --disable-libssp --disable-libstdcxx-pch
--disable-libunwind-exceptions --disable-linker-build-id --disable-nls
--disable-werror --disable-__cxa_atexit --enable-checking=release
--enable-clocale=gnu --enable-gnu-unique-object --enable-gold
--enable-languages=c,c++ --enable-ld=default --enable-lto --enable-plugin
--enable-shared --infodir=/usr/share/info --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --prefix=/usr --target=avr
--with-as=/usr/bin/avr-as --with-gnu-as --with-gnu-ld --with-ld=/usr/bin/avr-ld
--with-plugin-ld=ld.gold --with-system-zlib --with-isl
--enable-gnu-indirect-function
Thread model: single
gcc version 7.3.0 (GCC)
COLLECT_GCC_OPTIONS='-O0' '-v' '-save-temps' '-c' '-o' 'bug.o'
'-specs=device-specs/specs-avr2'
/usr/lib/gcc/avr/7.3.0/cc1plus -E -quiet -v bug.cpp -mn-flash=6 -mskip-bug
-O0 -fpch-preprocess -mn-flash=6 -mskip-bug -fno-rtti -fno-enforce-eh-specs
-fno-exceptions -o bug.ii
ignoring nonexistent directory
"/usr/lib/gcc/avr/7.3.0/../../../../avr/include/c++/7.3.0"
ignoring nonexistent directory
"/usr/lib/gcc/avr/7.3.0/../../../../avr/include/c++/7.3.0/avr"
ignoring nonexistent directory
"/usr/lib/gcc/avr/7.3.0/../../../../avr/include/c++/7.3.0/backward"
ignoring nonexistent directory
"/usr/lib/gcc/avr/7.3.0/../../../../avr/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/avr/7.3.0/include
/usr/lib/gcc/avr/7.3.0/include-fixed
/usr/lib/gcc/avr/7.3.0/../../../../avr/include
End of search list.
COLLECT_GCC_OPTIONS='-O0' '-v' '-save-temps' '-c' '-o' 'bug.o'
'-specs=device-specs/specs-avr2'
/usr/lib/gcc/avr/7.3.0/cc1plus -fpreprocessed bug.ii -mn-flash=6 -mskip-bug
-quiet -dumpbase bug.cpp -auxbase-strip bug.o -O0 -version -mn-flash=6
-mskip-bug -fno-rtti -fno-enforce-eh-specs -fno-exceptions -o bug.s
GNU C++14 (GCC) version 7.3.0 (avr)
compiled by GNU C version 7.2.1 20180116, GMP version 6.1.2, MPFR
version 4.0.0, MPC version 1.1.0, isl version isl-0.18-GMP
warning: MPFR header version 4.0.0 differs from library version 4.0.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (GCC) version 7.3.0 (avr)
compiled by GNU C version 7.2.1 20180116, GMP version 6.1.2, MPFR
version 4.0.0, MPC version 1.1.0, isl version isl-0.18-GMP
warning: MPFR header version 4.0.0 differs from library version 4.0.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 1d5b2c6ab68d14352ece4d9fac25dd7b
bug.cpp:33:1: internal compiler error: in output_constructor_regular_field,
at varasm.c:5031
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
When compiling for my amd64 machine the very same error happens, so it seems
not to be a problem of the avr target.
The gcc was installed as binary version from the Archlinux main repository for
amd64.
# avr-g++ -v
Using built-in specs.
Reading specs from /usr/lib/gcc/avr/7.3.0/device-specs/specs-avr2
COLLECT_GCC=avr-g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/avr/7.3.0/lto-wrapper
Target: avr
Configured with: /build/avr-gcc/src/gcc-7-20180125/configure
--disable-install-libiberty --disable-libssp --disable-libstdcxx-pch
--disable-libunwind-exceptions --disable-linker-build-id --disable-nls
--disable-werror --disable-__cxa_atexit --enable-checking=release
--enable-clocale=gnu --enable-gnu-unique-object --enable-gold
--enable-languages=c,c++ --enable-ld=default --enable-lto --enable-plugin
--enable-shared --infodir=/usr/share/info --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --prefix=/usr --target=avr
--with-as=/usr/bin/avr-as --with-gnu-as --with-gnu-ld --with-ld=/usr/bin/avr-ld
--with-plugin-ld=ld.gold --with-system-zlib --with-isl
--enable-gnu-indirect-function
Thread model: single
gcc version 7.3.0 (GCC)
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Subject: [Bug ipa/80277] ipa-icf overlooking functions with identical assemble and semantics
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Subject: [Bug tree-optimization/71361] [7 Regression] Changes in ivopts caused perf regression on x86
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
Closing.
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Subject: [Bug debug/63572] [6/7/8 Regression] ICF breaks user debugging experience
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/84462] internal compiler error: in output_constructor_regular_field when creating array of structs (with testcase)
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--- Comment #1 from Christian Wolf <christianlupus at web dot de> ---
Created attachment 43459
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43459&action=edit
Output of g++ during run with save-temps
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Subject: [Bug c++/84436] Missed optimization with switch on enum constants returning the same value
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #4)
> Note that this is good for identity, but we could also turn a map 0->3,
> 1->4, 5->8 into x->x+3, or generally any map (with an unreachable default
> case) into a polynomial (or some other simple function), the cost of which
> might be higher or lower than the jump table. It probably isn't worth going
> too far in that direction though.
Sure, it's also described here:
https://docs.google.com/viewer?url=https%3A%2F%2Fpdfs.semanticscholar.org%2F9269%2F51f0f3e5d67d8ea2bf7b7bca4c5e7de3dafc.pdf%23page%3D103
It's a bit different as it handles situations like
switch (x)
case 16:
case 32:
...
where one should perform operation to index to have a consecutive jump table.
But it touches similar.
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Subject: [Bug middle-end/59521] __builtin_expect not effective in switch
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Subject: [Bug tree-optimization/78902] Missed malloc optimizations: malloc w/o LHS and zero argument
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Severity|normal |enhancement
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Subject: [Bug tree-optimization/82405] Function not inlined for switch and suboptimal assembly is generated
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug libstdc++/84367] [C++11] std::ostringstream stops inserting after multiple call to move assignment operator
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Frederic Tingaud <ftingaud at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Frederic Tingaud <ftingaud at gmail dot com> ---
Reopening because I reproduced with GCC 7.3. See previous comment for test
case.
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Subject: [Bug fortran/48890] [F95] Wrong length of a character component of named constant derived-type
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Blocks| |83497
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Looks like the root cause of PR 83497.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83497
[Bug 83497] [8 Regression] CPU2000 172.mgrid starts failing with r254730
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Subject: [Bug c++/84445] [7/8 Regression] ICE with __builtin_launder and virtual 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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43460
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43460&action=edit
gcc8-pr84445.patch
Untested fix.
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Subject: [Bug fortran/48890] [F95] Wrong length of a character component of named constant derived-type
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks|83497 |83823
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Of course, I meant 83823.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83497
[Bug 83497] [8 Regression] CPU2000 172.mgrid starts failing with r254730
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83823
[Bug 83823] [8 Regression] Character length issues with PACK()
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Subject: [Bug target/45996] -falign-functions=X does not work
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-19
Ever confirmed|0 |1
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Andrew should we document that or should I just close it as invalid. What do
you think?
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Subject: [Bug debug/84408] [8 regression] gcc.dg/plugin/poly-int-07_plugin.c compilation times out with -g
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--- Comment #4 from nsz at gcc dot gnu.org ---
(In reply to Aldy Hernandez from comment #3)
> I can't reproduce on gcc116.fsffrance.org. The assembler completes in less
> than a second for both -gno-inline-points and without.
>
> aldyh@gcc116:~/bld/t/gcc$ ./xg++ -B. -g -O -fPIC -shared -fno-rtti -time
> poly-int-07_plugin.ii
> # cc1plus 107.13 0.29
> # as 0.93 0.06
>
are you sure your gas has .loc view support? (gcc config disables it if there
is no support)
with same preprocessed source i get
# cc1plus 166.26 0.72
# as 89.16 0.24
# collect2 0.19 0.05
i'm not sure why cc1plus time got much slower compared to my earlier runs.
the asm is about 31MB and 1.9M lines, i don't think gas can process it in < 1s.
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Subject: [Bug c++/84435] -Wliteral-suffix warns on a using-directive
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--- Comment #1 from Mário Feroldi <mferoldif at gmail dot com> ---
Note that the following `foo`'s variant doesn't make the warning go away:
int foo(E e)
{
(e == E::A || e == E::B || e == E::C) ? void() :
__builtin_unreachable();
switch (e)
{
case E::A: return 0;
case E::B: return 1;
case E::C: return 2;
}
}
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug c++/84445] [7/8 Regression] ICE with __builtin_launder and virtual function
Date: Mon, 19 Feb 2018 13:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug c++/84435] -Wliteral-suffix warns on a using-directive
Date: Mon, 19 Feb 2018 13:08:00 -0000
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--- Comment #2 from Mário Feroldi <mferoldif at gmail dot com> ---
I'm really sorry for the mess up (previous comment wasn't meant to be posted on
this issue); could someone delete it?
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Subject: [Bug c/84100] [7 Regression] Function __attribute__((optimize(align-loops2))) gives spurious warning and is ignored
Date: Mon, 19 Feb 2018 13:17:00 -0000
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--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Chris Hall from comment #11)
> FWIW: __attribute__((aligned(32))) works nicely for functions.
You are right, that works fine! It should be equal to use
#pragma GCC optimize "align-functions=128"
or the corresponding attribute.
>
> Generally there is little to be gained from aligning all loops/jumps/labels
> in a given function or group of functions.
>
> Further, when code alignment issues bite, there is no guarantee that the
> solution is to align all loops/jumps/labels in the same way.
>
> So, it would be nice to be able to apply __attribute__((aligned(n))) to
> loops and/or labels... and perhaps to blocks. That way, precise alignment
> could be applied precisely where it matters.
>
> I have been doing some detailed timing of relatively small operations, which
> of course involves a loop to do the operation being timed many times. If
> the timing loop is not 32-byte aligned, the timings I get are not stable.
Such fine grained control would be nice, but it's very problematic to track
such information from a front-end to back-end where the real alignment happens.
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Subject: [Bug c++/84444] ICE with __builtin_launder and cast
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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> ---
Created attachment 43461
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43461&action=edit
gcc8-pr84444.patch
Untested fix.
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Subject: [Bug c++/84434] [8 Regression] internal compiler error: tree check: expected var_decl or field_decl or function_decl or type_decl or template_decl, have using_decl in build_deduction_guide, at cp/pt.c:25636
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Let's add Nathan, then.
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From: "sergey.ignatchenko at ithare dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84463] New: Supposedly-incompliant "error: '* key0' is not a constant expression"
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Bug ID: 84463
Summary: Supposedly-incompliant "error: '* key0' is not a
constant expression"
Product: gcc
Version: 7.2.0
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== COMPILER ==========
root@ubuntu-gcc7:~/ithare/kscope/test/nix# g++ --version
g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0
Copyright (C) 2017 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.
== CODE ============
#include <stdint.h>
#include <cstddef>
struct chacha_tv {
const char *desc;
const uint8_t key[32];
const uint8_t iv[8];
const size_t len;
const unsigned char out[512];
};
static constexpr chacha_tv chacha_test_vectors[] = {
{
"TC1: All zero key and IV",
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
64,
{
0x76, 0xb8, 0xe0, 0xad, 0xa0, 0xf1, 0x3d, 0x90,
0x40, 0x5d, 0x6a, 0xe5, 0x53, 0x86, 0xbd, 0x28,
0xbd, 0xd2, 0x19, 0xb8, 0xa0, 0x8d, 0xed, 0x1a,
0xa8, 0x36, 0xef, 0xcc, 0x8b, 0x77, 0x0d, 0xc7,
0xda, 0x41, 0x59, 0x7c, 0x51, 0x57, 0x48, 0x8d,
0x77, 0x24, 0xe0, 0x3f, 0xb8, 0xd8, 0x4a, 0x37,
0x6a, 0x43, 0xb8, 0xf4, 0x15, 0x18, 0xa1, 0x1c,
0xc3, 0x87, 0xb6, 0x69, 0xb2, 0xee, 0x65, 0x86,
},
},
};
constexpr int
KSCOPE_CT_Chacha_set_key_iv2(const uint8_t* key0, int keybits /*128 or 256*/,
const uint8_t iv0[8], const uint8_t counter0[8]) {
uint8_t c = key0[0];
return 0;
}
constexpr static const chacha_tv* tv = &chacha_test_vectors[0];
constexpr static const int k = tv->key[0];
constexpr static uint8_t kk[3] = {0,1,2};
constexpr static int x0 =
KSCOPE_CT_Chacha_set_key_iv2(chacha_test_vectors[0].key,256,tv->iv,nullptr);//OK
constexpr static int x1 =
KSCOPE_CT_Chacha_set_key_iv2(kk,256,tv->iv,nullptr);//OK
constexpr static int x2 =
KSCOPE_CT_Chacha_set_key_iv2(tv->key,256,tv->iv,nullptr);
== PROBLEM ============
When trying to compile the code above with GCC 7.2, the following error is
generated:
../chachatest.cpp:50:55: in constexpr expansion of
'KSCOPE_CT_Chacha_set_key_i
v2(((const uint8_t*)(((const uint8_t (*)[32])tv) + 8)), 256, ((const
uint8_t*)((
(const uint8_t (*)[8])tv) + 40)), 0)'
../chachatest.cpp:41:27: error: '* key0' is not a constant expression
uint8_t c = key0[0];
Expected behaviour is to acknowledge that key0 is an 'address constant
expression' in a sense of 5.19 (at least my humble reading of the standard says
that it is), and to allow the code to be compiled. Notes:
- note that both x0 and x1 compile ok
- both Clang and MSVC seem to agree it is an 'address constant expression' and
don't complain.
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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--- Comment #2 from Daniel Vollmer <zerolo at gmail dot com> ---
I'm having even more trouble to get this to work using a current gcc-7
(Homebrew GCC 7.3.0) 7.3.0.
First, I see some warnings in step 1) of the form
ld: warning: direct access in function
'__GLOBAL__sub_I_65535_0_Preprocessor.cpp.lto_priv.322' from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccm0fMqG.ltrans3.ltrans.o'
to global weak symbol
'__ZZN5Eigen8internal20manage_caching_sizesENS_6ActionEPlS2_E13m_l2CacheSize'
from file
'/var/folders/02/yl3m8d4d0397mk6dxn6dpcqw0000gp/T//ccm0fMqG.ltrans18.ltrans.o'
means the weak symbol cannot be overridden at runtime. This was likely caused
by different translation units being compiled with different visibility
settings.
even though visibility settings should be identical AFAICT.
The real blocker is exiting the binary (more accurately: Python extension) in
step 2) as it seems to hang (hanging for about 5mins now, for a profile run
that took 30secs) in
Call graph:
2508 Thread_3830138 DispatchQueue_1: com.apple.main-thread (serial)
+ 2507 start (in libdyld.dylib) + 8 [0x7fff772d111c]
+ ! 2507 exit (in libsystem_c.dylib) + 55 [0x7fff7737e362]
+ ! 2507 __cxa_finalize_ranges (in libsystem_c.dylib) + 351
[0x7fff7737e051]
+ ! 2507 dyld::runAllStaticTerminators(void*) (in dyld) + 64
[0x10d65a613]
+ ! 2507 __gcov_exit (in libFlucs.dylib) + 146 [0x110a54062]
libgcov-driver.c:871
+ ! 919 gcov_do_dump (in libFlucs.dylib) + 310,262,...
[0x110a52c66,0x110a52c36,...] libgcov-driver.c:171
+ ! 595 gcov_do_dump (in libFlucs.dylib) + 277,391,...
[0x110a52c45,0x110a52cb7,...] libgcov-driver.c:167
+ ! 520 gcov_do_dump (in libFlucs.dylib) + 274,322,...
[0x110a52c42,0x110a52c72,...] libgcov-driver.c:173
+ ! 205 gcov_do_dump (in libFlucs.dylib) + 377,259,...
[0x110a52ca9,0x110a52c33,...] libgcov-driver.c:172
+ ! 96 gcov_do_dump (in libFlucs.dylib) + 432,470,...
[0x110a52ce0,0x110a52d06,...] libgcov-driver.c:332
+ ! 66 gcov_do_dump (in libFlucs.dylib) + 439,436
[0x110a52ce7,0x110a52ce4] libgcov-driver.c:334
+ ! 44 gcov_do_dump (in libFlucs.dylib) + 493,227,...
[0x110a52d1d,0x110a52c13,...] libgcov-driver.c:316
+ ! 28 gcov_do_dump (in libFlucs.dylib) + 442 [0x110a52cea]
libgcov-driver.c:335
+ ! 13 gcov_do_dump (in libFlucs.dylib) + 351,366
[0x110a52c8f,0x110a52c9e] libgcov-driver.c:329
+ ! 7 gcov_do_dump (in libFlucs.dylib) + 293 [0x110a52c55]
libgcov-driver.c:317
+ ! 5 gcov_do_dump (in libFlucs.dylib) + 482,484
[0x110a52d12,0x110a52d14] libgcov-driver.c:309
+ ! 4 gcov_do_dump (in libFlucs.dylib) + 77 [0x110a52b7d]
libgcov-driver.c:302
+ ! : 4 strlen (in libsystem_c.dylib) + 14 [0x7fff7732142e]
+ ! 3 gcov_do_dump (in libFlucs.dylib) + 224 [0x110a52c10]
libgcov-driver.c:311
+ ! 1 gcov_do_dump (in libFlucs.dylib) + 234 [0x110a52c1a]
libgcov-driver.c:313
+ ! 1 gcov_do_dump (in libFlucs.dylib) + 345 [0x110a52c89]
libgcov-driver.c:325
So unfortunately I cannot even get to step 3) to repo the hot / cold section
issue.
>From gcc-bugs-return-593984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:31:10 2018
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Subject: [Bug middle-end/60725] [-Wreturn-type] false positive in trivial switch
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Mário Feroldi <mferoldif at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mferoldif at gmail dot com
--- Comment #9 from Mário Feroldi <mferoldif at gmail dot com> ---
Note that this version of `f1` doesn't prevent the warning. I wonder why?
enum E { E1 };
static inline int f1(enum E e) {
(e == E1) ? void() : __builtin_unreachable(); // *
switch (e) {
case E1: return 1;
}
}
int main () {
f1(E1);
return 0;
}
>From gcc-bugs-return-593985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:32:55 2018
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #5 from acsawdey at gcc dot gnu.org ---
Very interesting ... the return can be added and the problem still exists.
However changing the size of the array sA to be >= 16 makes the problem go
away. Why is that?
>From gcc-bugs-return-593986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:38:56 2018
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Subject: [Bug c++/84441] [6/7/8 Regression] Internal compiler error
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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|--- |6.5
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
struct A;
struct B { using C = int *; template <typename> using D = A; };
struct F : B { struct G { typedef D<char> h; }; };
struct I {
struct J { J (F::C, A &); F::C k; } l;
F::G::h &foo ();
I (I &&) : l (0, foo ()) {}
};
struct N { I o; int e; };
N bar ();
struct E : N { E () : N (0 ? bar () : bar ()) {} };
void
baz ()
{
E ();
}
>From gcc-bugs-return-593988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:52:50 2018
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Subject: [Bug debug/84457] [8 regression] gcc.dg/guality/pr49888.c fail
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |reichelt at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #4 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
Hopefully this was the last duplicate ;-)
*** This bug has been marked as a duplicate of bug 84456 ***
>From gcc-bugs-return-593987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:42:14 2018
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to acsawdey from comment #5)
> Very interesting ... the return can be added and the problem still exists.
> However changing the size of the array sA to be >= 16 makes the problem go
> away. Why is that?
Because there are 2 undefined behaviors: the missing return and access to array
which is out of bounds.
>From gcc-bugs-return-593989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 13:52:51 2018
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Subject: [Bug debug/84456] New: [8 regression] gcc.dg/guality/pr49888.c fail
Date: Mon, 19 Feb 2018 14:12:00 -0000
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Bug ID: 84456
Summary: [8 regression] gcc.dg/guality/pr49888.c fail
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: andrey.y.guskov at intel dot com
Target Milestone: ---
r257631 triggers this:
spawn gdb -nx -nw -quiet -batch -x pr49888.gdb ./pr49888.exe
FAIL: gcc.dg/guality/pr49888.c -O1 line 18 !c == 1
Option set:
-with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-shared
--enable-host-shared --enable-clocale=gnu --enable-cloog-backend=isl
--enable-languages=c,c++,fortran,jit,lto -with-arch=silvermont
--with-cpu=silvermont
--- Comment #1 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
*** Bug 84457 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-593990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:12:10 2018
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Subject: [Bug c++/84441] [6/7/8 Regression] Internal compiler error
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
CC| |jason at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Further reduced:
int &foo ();
struct A { struct B { B (int *, int &); int *b; } a; A (A &&) : a (0, foo ())
{} };
struct C { A c; int d; };
C bar ();
struct D : C { D () : C (0 ? bar () : bar ()) {} };
D d;
The problem is when expanding this_2(D)->D.2434 = bar ();, where both lhs and
rhs
have TREE_ADDRESSABLE type, but type of bar () return value is C, which has
128-bit size, and type of the lhs - COMPONENT_REF - is also C, 128-bit, but its
second operand is a 96-bit FIELD_DECL instead (C without the padding at the
end).
When using C (bar ()) instead of C (0 ? bar () : bar ()) it compiles fine, but
in that case bar () is not called with the COMPONENT_REF with 96-bit FIELD_DECL
on lhs, but instead a C temporary that is later on copy constructed into the
96-bit FIELD_DECL. So, it feels more like a C++ FE bug than something the
expansion needs to handle, but I could be wrong.
>From gcc-bugs-return-593992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:19:21 2018
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715
--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
As it's fixed on GCC-7 and currect trunk, can we Jakub close that?
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug c/82323] circular ifunc attribute on a function definition silently accepted
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I've noticed that C++ FE can handle the problem #1:
./xg++ -B. ~/Programming/testcases/pr82323.c
/home/marxin/Programming/testcases/pr82323.c:2:1: error: ‘int foo()’ defined
both normally and as ‘ifunc’ attribute
foo (void) { return 0; }
^~~
I tried to look at the and I'm leaving this PR to somebody more skilled with
FE.
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #7 from acsawdey at gcc dot gnu.org ---
Created attachment 43462
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43462&action=edit
revised test case
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I haven't heard any answer to #c16 whether it actually helped the kernel or
not.
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #8 from acsawdey at gcc dot gnu.org ---
It looks like both gcc 7 and 8 assume that the statement
ptrA->sA[ptrB->int1].zt = parm1;
will only be executed 14+1 times because of the declaration sA[15].
However gcc 7 assumes the whole loop will only execute that number of times:
Statement ptrA_14(D)->sA[ptrB__int1_lsm.11_22].zt = _34;
is executed at most 14 (bounded by 14) + 1 times in loop 1.
Analyzing # of iterations of loop 1
exit condition [15, + , 4294967295] != 0
bounds on difference of bases: -15 ... -15
result:
# of iterations 15, bounded by 15
Loop 1 iterates 15 times.
Loop 1 iterates at most 14 times.
Loop 1 likely iterates at most 14 times.
Analyzing # of iterations of loop 1
exit condition [15, + , 4294967295] != 0
bounds on difference of bases: -15 ... -15
result:
# of iterations 15, bounded by 15
Removed pointless exit: if (ivtmp_24 != 0)
were gcc8 does not:
Statement ptrA_13(D)->sA[ptrB__int1_lsm.5_22].zt = _20;
is executed at most 14 (bounded by 14) + 1 times in loop 1.
Analyzing # of iterations of loop 1
exit condition [15, + , 4294967295] != 0
bounds on difference of bases: -15 ... -15
result:
# of iterations 15, bounded by 15
Loop 1 iterates 15 times.
Loop 1 iterates at most 15 times.
Loop 1 likely iterates at most 15 times.
Neither gcc 7 nor 8 produce any warnings for the revised test case with -Wall.
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to acsawdey from comment #7)
> Created attachment 43462 [details]
> revised test case
$ gcc pr84433-v2.c -fsanitize=undefined && ./a.out
pr84433-v2.c:36:11: runtime error: index 15 out of bounds for type 'structA
[15]'
B.int1 = 16 expected 16
Patching the file with:
diff -u pr84433-v2-original.c pr84433-v2.c
--- pr84433-v2-original.c 2018-02-19 15:22:40.250620365 +0100
+++ pr84433-v2.c 2018-02-19 15:22:45.054713707 +0100
@@ -9,7 +9,7 @@
typedef struct structC
{
struct structB sB[16][10];
- struct structA sA[15];
+ struct structA sA[16];
struct structA sA2[16];
uint32_t int1;
uint32_t int2;
$ gcc pr84433-v2.c -O2 && ./a.out
B.int1 = 16 expected 16
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Subject: [Bug middle-end/84433] gcc 7 and before miscompile loop and remove exit due to incorrect range calculation
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--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to acsawdey from comment #8)
> It looks like both gcc 7 and 8 assume that the statement
>
> ptrA->sA[ptrB->int1].zt = parm1;
>
> will only be executed 14+1 times because of the declaration sA[15].
>
> However gcc 7 assumes the whole loop will only execute that number of times:
>
> Statement ptrA_14(D)->sA[ptrB__int1_lsm.11_22].zt = _34;
> is executed at most 14 (bounded by 14) + 1 times in loop 1.
> Analyzing # of iterations of loop 1
> exit condition [15, + , 4294967295] != 0
> bounds on difference of bases: -15 ... -15
> result:
> # of iterations 15, bounded by 15
> Loop 1 iterates 15 times.
> Loop 1 iterates at most 14 times.
> Loop 1 likely iterates at most 14 times.
> Analyzing # of iterations of loop 1
> exit condition [15, + , 4294967295] != 0
> bounds on difference of bases: -15 ... -15
> result:
> # of iterations 15, bounded by 15
> Removed pointless exit: if (ivtmp_24 != 0)
>
> were gcc8 does not:
>
> Statement ptrA_13(D)->sA[ptrB__int1_lsm.5_22].zt = _20;
> is executed at most 14 (bounded by 14) + 1 times in loop 1.
> Analyzing # of iterations of loop 1
> exit condition [15, + , 4294967295] != 0
> bounds on difference of bases: -15 ... -15
> result:
> # of iterations 15, bounded by 15
> Loop 1 iterates 15 times.
> Loop 1 iterates at most 15 times.
> Loop 1 likely iterates at most 15 times.
GCC makes an assumption that the loop does iterate 'at most' 15 times.
The issue happens in runtime, compiler doesn't prove that in compile time.
For situations like this one can use UBSAN or ASAN sanitizers.
>
> Neither gcc 7 nor 8 produce any warnings for the revised test case with
> -Wall.
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #21 from Martin Liška <marxin at gcc dot gnu.org> ---
I see, let me unassign that.
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Subject: [Bug target/45996] -falign-functions=X does not work
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug c++/84430] [7/8 Regression] ICE with #pragma omp simd in lambda
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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> ---
Created attachment 43463
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43463&action=edit
gcc8-pr84430.patch
Untested fix.
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Subject: [Bug c++/84430] [7/8 Regression] ICE with #pragma omp simd in lambda
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug c++/84139] C++17 Filesystem/Filesystem TS + cmcstl2 = GCC ICE
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
We should find out if it was really fixed or has just gone latent.
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Subject: [Bug libstdc++/81338] stringstream remains empty after being moved into multiple times
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 84367 has been marked as a duplicate of this bug. ***
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/84367] [C++11] std::ostringstream stops inserting after multiple call to move assignment operator
Date: Mon, 19 Feb 2018 14:49:00 -0000
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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> ---
(In reply to Frederic Tingaud from comment #2)
> Running with GCC v7.3.0 - libc++=20180125
This only shows which compiler was used at preprocessing time, are you sure you
linked to the right libstdc++.so?
https://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.how_to_set_paths
When I test with GCC 7.3.0 it works correctly.
N.B. your test case doesn't work, you need a main function.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/84367] [C++11] std::ostringstream stops inserting after multiple call to move assignment operator
Date: Mon, 19 Feb 2018 14:53:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Closing again, because it really is fixed.
$ /home/jwakely/gcc/7.3.0/bin/g++ -Wall -Wextra -g ss.cc
-Wl,-rpath,/home/jwakely/gcc/7.3.0/lib64/
$ ldd a.out
linux-vdso.so.1 (0x00007ffd96dcb000)
libstdc++.so.6 => /home/jwakely/gcc/7.3.0/lib64/libstdc++.so.6
(0x00007f81c792a000)
libm.so.6 => /lib64/libm.so.6 (0x00007f81c7614000)
libgcc_s.so.1 => /home/jwakely/gcc/7.3.0/lib64/libgcc_s.so.1
(0x00007f81c73fd000)
libc.so.6 => /lib64/libc.so.6 (0x00007f81c7028000)
/lib64/ld-linux-x86-64.so.2 (0x00007f81c7cab000)
$ ./a.out
Running with GCC v7.3.0 - libc++=20180125
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
*** This bug has been marked as a duplicate of bug 81338 ***
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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++/84464] New: Pack expansion in mem-initializer-list with expression-list
Date: Mon, 19 Feb 2018 14:54:00 -0000
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Bug ID: 84464
Summary: Pack expansion in mem-initializer-list with
expression-list
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Reporter: tadeus.prastowo at unitn dot it
Target Milestone: ---
I am referring to C++14 standard
(http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3797.pdf) for the
following problem. Section 12.6.2 "Initializing bases and members" paragraph 1
says that mem-initializer can either be mem-initializer-id(expression-list_opt)
or mem-initializer-id braced-init-list, and mem-initializer... is a valid
construct. But, GCC rejects the first alternative of the valid construct but
accepts the second alternative of the valid construct as demonstrated by the
following program. Since both alternatives are valid constructs, GCC shall
accept the first alternative as well.
GCC cannot compile the following program (cf. https://godbolt.org/g/QWj5Q3),
but Clang can (cf. https://godbolt.org/g/jA7Z8H). I use flag `-std=c++14'.
#include <cstdio>
struct C1 {
bool a;
float b;
C1(bool x, float y) : a(x), b(y) {}
};
struct C2 {
bool c;
float d;
C2(bool x, float y) : c(x), d(y) {}
};
struct C3 {
bool e;
float f;
C3(bool x, float y) : e(x), f(y) {}
};
template<class... baseclasses>
struct A : public baseclasses...
{
template<class... Ts> A(Ts... args) : baseclasses(args...)... {
// This uses mem-initializer-id(expression-list_opt).
// Section 5.2 par 1 says that expression-list is initializer-list.
// Section 8.5 par 1 says that initializer-list can be
// initializer-clause... with initializer-clause being
// assignment-expression.
// Section 5.17 par 1 says that assignment-expression can boil down
// to an identifier, for example, args.
// So, the construct is valid as far as I can see. But,
// g++ 5.4.1 fails with: invalid use of pack expansion expression.
// g++ 7.3.0 fails with: no matching function for call to
// ‘C1::C1(bool)’.
// The fix is to use mem-initializer-id braced-init-list as in:
// : baseclasses{args...}...
}
};
int main() {
A<C1, C2, C3> a(true, 1.0F);
std::printf("%d %f %d %f %d %f\n", a.a, a.b, a.c, a.d, a.e, a.f);
}
>From gcc-bugs-return-594008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:54:12 2018
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Subject: [Bug c++/81860] [7 Regression] Call to undefined inline function involving inheriting constructors
Date: Mon, 19 Feb 2018 14:57:00 -0000
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Feb 19 14:53:36 2018
New Revision: 257806
URL: https://gcc.gnu.org/viewcvs?rev=257806&root=gcc&view=rev
Log:
Fix lambdas in template default argument of inherited ctor.
gcc/cp:
Backport from mainline
2017-08-29 Jason Merrill <jason@redhat.com>
Fix lambdas in template default argument of inherited ctor.
* method.c (synthesized_method_base_walk): Replace an inherited
template with its specialization.
(synthesized_method_walk): Make inheriting_ctor a pointer.
(maybe_explain_implicit_delete, explain_implicit_non_constexpr)
(deduce_inheriting_ctor, implicitly_declare_fn): Adjust.
gcc/testsuite:
Backport from mainline
2018-01-02 Marek Polacek <polacek@redhat.com>
PR c++/81860
* g++.dg/cpp0x/inh-ctor30.C: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/inh-ctor30.C
branches/gcc-7-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-mangle5.C
Modified:
branches/gcc-7-branch/gcc/cp/ChangeLog
branches/gcc-7-branch/gcc/cp/method.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-594011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:59:30 2018
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Subject: [Bug target/84328] [6/7/8 Regression] -finline-small-functions and inline keyword lead to slowdown since version 6
Date: Mon, 19 Feb 2018 14:59:00 -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 only change I see is with r233211, before that user time is around
0m5.233s and after that around 0m5.404s, which is more like 3% than 10% and
there is nothing wrong on the actual change.
>From gcc-bugs-return-594009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:57:03 2018
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Subject: [Bug target/81693] FAIL: gcc.dg/torture/pr25967-*.c -O* execution test on darwin
Date: Mon, 19 Feb 2018 14:59:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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| |a/show_bug.cgi?id=25967
--- Comment #28 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #27)
> By definition of the "naked" attribute, the program is responsible
> to manage stack. Since simulated interrupt functions don't follow
> the normal software calling convention and there is no attempt
> made to accommodate it in the naked function, the outgoing stack
> is properly aligned to requirement of software calling convention.
> Since Darwin checks the incoming stack alignment, the failure is
> expected.
So XFAIL it and close this bug then?
>From gcc-bugs-return-594010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:59:26 2018
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Subject: [Bug libstdc++/70694] 50 experimental/filesystem/* failures on x86_64-apple-darwin10
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #3)
> Created attachment 38291 [details]
> don't jam visibility for newer Darwin
>
>
> Dominique, please could you try this?
(In reply to Dominique d'Humieres from comment #5)
> > Does the patch work?
>
> Indeed!
Iain, could you send the patch to gcc-patches for review please?
>From gcc-bugs-return-594012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 14:59:59 2018
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
Date: Mon, 19 Feb 2018 15:00:00 -0000
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--- Comment #22 from Arnd Bergmann <arnd at linaro dot org> ---
(In reply to Jakub Jelinek from comment #20)
> I haven't heard any answer to #c16 whether it actually helped the kernel or
> not.
Sorry about that. Yes, it definitely helped the kernel a lot. At this point, we
also have localized workarounds to the same effect (using local variables
instead of accessing inline function arguments) in all functions that exceeded
the arbitrary 2048 byte stack size limit, and backported into the 4.4 kernel
and later, but with the newer gcc releases, we also get a lower stack
consumption for lots of other functions that were high but below that limit.
I had hoped that we could also do this on gcc-7 branch without KASAN, as high
stack consumption is always problematic for the kernel, and the same functions
that got bumped over the warning limit with KASAN still suffer from wasted
stack space on older compilers without KASAN. Since you consider that too
invasive for the stable releases, my current workaround has to suffice.
One side issue that is not solved at all by the patch is
-fsanitize-address-use-after-scope, since that still leads to extreme stack
usage in the kernel. The problem here is that it forces many local variables
into separate stack slots even when they could get reused without
-fsanitize-address-use-after-scope, making it still actively dangerous to run
kernels built with this option.
My workaround in the kernel is now to have that option disabled by default and
only enabled when users explicitly turn it on. I still think it would be nice
to address that in the way I originally suggested, by copying the behavior that
LLVM uses with its variably sized redzone area.
>From gcc-bugs-return-594013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:00:53 2018
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Subject: [Bug driver/83193] Help for invalid -march= options from cc1 omits -march=native on x86-64, arm. aarch64, output also inconsistent
Date: Mon, 19 Feb 2018 15:02:00 -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> ---
Confirmed, by '-march=native no longer documented in cc1 help message and the
help output' you mean adding 'native' as one possible option value for -march
and -mtune. Am I right?
>From gcc-bugs-return-594014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:02:54 2018
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Subject: [Bug c++/79094] Pack expansion in using-declaration rejects an attempt to inherit a pack of constructors
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug c++/84464] Pack expansion in mem-initializer-list with expression-list
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
Ever confirmed|0 |1
>From gcc-bugs-return-594016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:06:33 2018
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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/81693] FAIL: gcc.dg/torture/pr25967-*.c -O* execution test on darwin
Date: Mon, 19 Feb 2018 15:11:00 -0000
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--- Comment #29 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Eric Gallager from comment #28)
> (In reply to H.J. Lu from comment #27)
> > By definition of the "naked" attribute, the program is responsible
> > to manage stack. Since simulated interrupt functions don't follow
> > the normal software calling convention and there is no attempt
> > made to accommodate it in the naked function, the outgoing stack
> > is properly aligned to requirement of software calling convention.
> > Since Darwin checks the incoming stack alignment, the failure is
> > expected.
>
> So XFAIL it and close this bug then?
Yes.
>From gcc-bugs-return-594017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:11:48 2018
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From: "nruslan_devel at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/84431] Suboptimal code for masked shifts (x86/x86-64)
Date: Mon, 19 Feb 2018 15:18:00 -0000
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--- Comment #2 from Ruslan Nikolaev <nruslan_devel at yahoo dot com> ---
Sebastian, it is
gcc -m32 -Wall -O2 -S test.c
(the same is for clang)
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From: "sudi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 15:31:00 -0000
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--- Comment #17 from sudi at gcc dot gnu.org ---
Since this looks like a pretty invasive problem, according to my discussions
with Wilco and Kyrill, I think I will try to propose a smaller, but temporary
fix using the ?s and special casing 32 for this PR (which could go in sooner).
I will also open a new PR to handle this at the expand phase and clean up the
code aimed at gcc 9.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84448] [6/7/8 Regression] ICE with broken condition in parallel for loop
Date: Mon, 19 Feb 2018 15:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |6.5
>From gcc-bugs-return-594020-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:32:45 2018
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84465] New: FAIL: g++.dg/template/overload15.C
Date: Mon, 19 Feb 2018 15:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84465
Bug ID: 84465
Summary: FAIL: g++.dg/template/overload15.C
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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i see
FAIL: g++.dg/template/overload15.C -std=c++98 (test for excess errors)
FAIL: g++.dg/template/overload15.C -std=c++11 (test for excess errors)
FAIL: g++.dg/template/overload15.C -std=c++14 (test for excess errors)
on arm-* targets
spawn -ignore SIGHUP /B/gcc/testsuite/g++/../../xg++
-B/B/gcc/testsuite/g++/../../ /S/gcc/testsuite/g++.dg/template/overload15.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/B/arm-none-linux-gnueabihf/libstdc++-v3/include/arm-none-linux-gnueabihf
-I/B/arm-none-linux-gnueabihf/libstdc++-v3/incl
/S/gcc/testsuite/g++.dg/template/overload15.C: In function 'void f()':
/S/gcc/testsuite/g++.dg/template/overload15.C:14:10: error: call of overloaded
'f<0>(char (*)[1])' is ambiguous
/S/gcc/testsuite/g++.dg/template/overload15.C:5:6: note: candidate: 'void
f(char (*)[(((0 - 1) > N) ? 1 : 7)]) [with unsigned int N = 0]'
/S/gcc/testsuite/g++.dg/template/overload15.C:8:6: note: candidate: 'void
f(char (*)[(((0 - 1) > N) ? 1 : 7)]) [with unsigned int N = 0]'
/S/gcc/testsuite/g++.dg/template/overload15.C:15:10: error: no matching
function for call to 'f<0>(char (*)[7])'
/S/gcc/testsuite/g++.dg/template/overload15.C:5:6: note: candidate:
'template<unsigned int N> void f(char (*)[(((0 - 1) > N) ? 1 : 7)])'
/S/gcc/testsuite/g++.dg/template/overload15.C:5:6: note: template argument
deduction/substitution failed:
/S/gcc/testsuite/g++.dg/template/overload15.C:15:8: note: cannot convert '&
y' (type 'char (*)[7]') to type 'char (*)[1]'
/S/gcc/testsuite/g++.dg/template/overload15.C:8:6: note: candidate:
'template<unsigned int N> void f(char (*)[(((0 - 1) > N) ? 1 : 7)])'
/S/gcc/testsuite/g++.dg/template/overload15.C:8:6: note: template argument
deduction/substitution failed:
/S/gcc/testsuite/g++.dg/template/overload15.C:15:8: note: cannot convert '&
y' (type 'char (*)[7]') to type 'char (*)[1]'
compiler exited with status 1
FAIL: g++.dg/template/overload15.C -std=c++11 (test for excess errors)
Excess errors:
/S/gcc/testsuite/g++.dg/template/overload15.C:14:10: error: call of overloaded
'f<0>(char (*)[1])' is ambiguous
/S/gcc/testsuite/g++.dg/template/overload15.C:15:10: error: no matching
function for call to 'f<0>(char (*)[7])'
>From gcc-bugs-return-594021-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:33:18 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/55922] brace initializing parent cause bogus virtual base constructor calls
Date: Mon, 19 Feb 2018 15:34:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2015-06-25 00:00:00 |2018-2-19
Known to work| |7.1.0, 8.0.1
Known to fail| |6.3.0
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is fixed in GCC 7.1 and later, but not in the gcc-6 branch.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84451] Multiple invocation of virtual base class constructor in diamond inheritance
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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> ---
GCC 5 is no longer supported, but GCC 6 also has the bug.
This was fixed by r238689 so is a dup of PR 66617 which is a dup of PR 66847
*** This bug has been marked as a duplicate of bug 66847 ***
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Subject: [Bug c++/84435] -Wliteral-suffix warns on a using-directive
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
Ever confirmed|0 |1
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, we can't delete comments.
>From gcc-bugs-return-594024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:35:41 2018
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Subject: [Bug c++/66847] Derived class calling protected base ctor using C++11 {brace} init = spurious access denied error
Date: Mon, 19 Feb 2018 15:37:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 84451 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-594025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:37:55 2018
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/29256] [6/7/8 regression] loop performance regression
Date: Mon, 19 Feb 2018 15:38:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
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--- Comment #66 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Aldy Hernandez from comment #65)
> (In reply to Jeffrey A. Law from comment #45)
> > This problem still exists and can be seen by making the arrays external and
> > using -fno-tree-loop-distribute-patterns.
>
> Still a problem. I get the same code Jeff got for comment 45.
A simple workaround for GCC8 might be to tweak the address costs when loop
unrolling is enabled, so offsets are preferred over indexing (either in IVOpt
or backend). For GCC9 a tree level loop optimization has been proposed which
will fix this issue.
>From gcc-bugs-return-594029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:38:43 2018
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Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Mon, 19 Feb 2018 15:38:00 -0000
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--- Comment #23 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, I meant -L flags but seem to be unable to use my Shift key properly.
>From gcc-bugs-return-594026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:38:17 2018
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Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Mon, 19 Feb 2018 15:38:00 -0000
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--- Comment #22 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think we can rely on the relative placement, but it would be better to add
that to the _l flags used for the testsuite.
>From gcc-bugs-return-594027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:38:27 2018
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Subject: [Bug c++/84465] FAIL: g++.dg/template/overload15.C
Date: Mon, 19 Feb 2018 15:38:00 -0000
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nsz at gcc dot gnu.org changed:
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--- Comment #1 from nsz at gcc dot gnu.org ---
dup.
*** This bug has been marked as a duplicate of bug 79064 ***
>From gcc-bugs-return-594028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:38:28 2018
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Subject: [Bug c++/79064] Cannot overload member function templates on type of literal
Date: Mon, 19 Feb 2018 15:39:00 -0000
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nsz at gcc dot gnu.org changed:
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--- Comment #7 from nsz at gcc dot gnu.org ---
*** Bug 84465 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-594030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:39:29 2018
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/84466] New: [8 regression] libgomp.graphite/force-parallel-8.c fails starting with r257723
Date: Mon, 19 Feb 2018 15:39:00 -0000
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Bug ID: 84466
Summary: [8 regression] libgomp.graphite/force-parallel-8.c
fails starting with r257723
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
I am seeing this on powerpc64 both LE and BE.
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/
/home/seurer/gcc/gcc-test2/libgomp/testsuite/libgomp.graphite/force-parallel-8.c
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs
-I/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp
-I/home/seurer/gcc/gcc-test2/libgomp/testsuite/../../include
-I/home/seurer/gcc/gcc-test2/libgomp/testsuite/.. -fmessage-length=0
-fno-diagnostics-show-caret -Wno-hsa -fdiagnostics-color=never -fopenmp -ansi
-pedantic-errors -O2 -ftree-parallelize-loops=4 -floop-parallelize-all
-fdump-tree-parloops-details -fdump-tree-optimized -fno-loop-strip-mine
-fno-loop-block -fdump-tree-graphite-all
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs
-lm -o ./force-parallel-8.exe
PASS: libgomp.graphite/force-parallel-8.c (test for excess errors)
Setting LD_LIBRARY_PATH to
.:/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test2/gcc:/home/seurer/gcc/build/gcc-test2/gcc/32:.:/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test2/gcc:/home/seurer/gcc/build/gcc-test2/gcc/32:/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-6.3.0/lib64
spawn [open ...]
PASS: libgomp.graphite/force-parallel-8.c execution test
FAIL: libgomp.graphite/force-parallel-8.c scan-tree-dump-times graphite "5
loops carried no dependency" 1 (found 0 times)
PASS: libgomp.graphite/force-parallel-8.c scan-tree-dump-times optimized
"loopfn.0" 4
PASS: libgomp.graphite/force-parallel-8.c scan-tree-dump-times optimized
"loopfn.1" 4
testcase
/home/seurer/gcc/gcc-test2/libgomp/testsuite/libgomp.graphite/graphite.exp
completed in 2 seconds
=== libgomp Summary ===
# of expected passes 4
# of unexpected failures 1
>From gcc-bugs-return-594032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:49:14 2018
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Subject: [Bug c++/81860] [7 Regression] Call to undefined inline function involving inheriting constructors
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 7.4 now.
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Subject: [Bug c++/22238] Awful error messages with virtual functions
Date: Mon, 19 Feb 2018 15:49:00 -0000
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--- Comment #25 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to AK from comment #24)
> The recent error messages look much better. Maybe we can close this.
>
> prog.cpp: In member function ‘void A::bar()’:
> prog.cpp:6:23: error: could not convert ‘A::foo()’ from ‘void’ to ‘bool’
> void bar() { if (foo()) ; }
There are other issues being tracked here, like the one in comment 12.
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Subject: [Bug target/84467] New: Choosing between Integer and NEON for 64-bit operations
Date: Mon, 19 Feb 2018 15:52:00 -0000
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Bug ID: 84467
Summary: Choosing between Integer and NEON for 64-bit
operations
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This is a follow up report to bug 82989
The comment bug 82989, comment 12 details about the need for early decisions to
be made about choosing to take either NEON code or ARM code. This means that at
the expand phase, we should be able to make a clear choice and avoid mixing the
two.
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Subject: [Bug target/84467] Choosing between Integer and NEON for 64-bit operations
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sudi at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org,
| |matthijsvanduin at gmail dot com,
| |wilco at gcc dot gnu.org
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Subject: [Bug target/84467] Choosing between Integer and NEON for 64-bit operations
Date: Mon, 19 Feb 2018 15:54:00 -0000
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--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.
>From gcc-bugs-return-594036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:54:41 2018
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512
Date: Mon, 19 Feb 2018 15:55:00 -0000
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--- Comment #5 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
Yes, looks like the problem is with unaligned access (there is no fail in
reproducer when starting a loop with i=0).
It seems that your patch works - there are no runfails for reproducer, 445,
521, 527, 554 (tested on SPEC train workload).
I'll report upon finishing other benchmarks.
>From gcc-bugs-return-594037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:55:53 2018
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From: "sudi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82989] [7/8 regression] Inexplicable use of NEON for 64-bit math
Date: Mon, 19 Feb 2018 15:56:00 -0000
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--- Comment #18 from sudi at gcc dot gnu.org ---
Created bug 84467 to continue discussions about the early expand phase
decisions to choose or reject NEON operations
>From gcc-bugs-return-594038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 15:56:55 2018
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From: "romain.geissler at amadeus dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84468] New: [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
Date: Mon, 19 Feb 2018 16:02:00 -0000
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Bug ID: 84468
Summary: [gcc 8] Inconsistent -Wstringop-truncation warnings
with -O2
Product: gcc
Version: 8.0.1
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Hi,
I can see some strange behavior for the warning -W=stringop-truncation with -O2
and current master, depending on how I enclose my code in if/else blocks or
not, despite that logically speaking, the end result is always the same.
See this code:
EOF
#include <string.h>
class A
{
public:
A();
A(const char* iCString);
A& operator=(const A& iA);
private:
void setCString(const char* iCString);
// Uncommenting the attribute silences the warning
// but actually we do have a "string", not a "nonstring".
/* [[gnu::nonstring]] */ char _cstring[3 + 1];
};
A::A()
{
_cstring[0] = '\0';
}
A::A(const char* iCString)
{
setCString(iCString);
}
A& A::operator=(const A& iA)
{
if (this != &iA) // Commenting this line silences the warning.
{
setCString(iA._cstring);
}
return *this;
}
void A::setCString(const char* iCString)
{
// This version produces warning.
if (iCString)
{
strncpy(_cstring, iCString, 3);
}
_cstring[3] = '\0';
/*
// This version doesn't produce any warning, but has the same logic as
above.
if (iCString)
{
strncpy(_cstring, iCString, 3);
_cstring[3] = '\0';
}
else
{
_cstring[3] = '\0';
}
*/
/*
// This version also produces a warning, despite having the same logic as
above,
// just with an extra assigment to _cstring[3] when iCString is not null.
if (iCString)
{
strncpy(_cstring, iCString, 3);
_cstring[3] = '\0';
}
_cstring[3] = '\0';
*/
}
When compiled with -Wall -Werror -Wextra -std=gnu++17 -O2 and current master. I
get:
error: ‘char* strncpy(char*, const char*, size_t)’ output may be truncated
copying 3 bytes from a string of length 3 [-Werror=stringop-truncation]
First what I find strange is the warning itself. gcc is clever enough to see
that source is 3 bytes long, that we copy in a buffer that is 4 bytes long, so
why would it complain about a truncation anyway ? Or maybe I misunderstood the
wording of the warning itself ?
Second, why are the different variant of A::setCString I commented in the code
working differently wrt the warning, while logically speaking they do have the
same behavior. If we need to write our if/else block in a given way to make gcc
understand it is safe, this starts to be complex for developers.
Final question: do you think it would somehow make sense to introduce a
"string" attribute, that would be the contrary of the newly introduced
"nonstring". "nonstring" means that maybe the string is not null terminate.
"string" would mean that for sure the array is always null terminated, and thus
doing things like strncpy(_cstring, anotherA._cstring, 4) (note that I used 4
and not 3 for the total size), would always work ? "nonstring" correctly
silences the warning, but has the exact opposite semantic meaning than I have
in this particular case.
Cheers,
Romain
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Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Mon, 19 Feb 2018 16:03:00 -0000
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--- Comment #24 from dave.anglin at bell dot net ---
On 2018-02-19 10:38 AM, redi at gcc dot gnu.org wrote:
> I think we can rely on the relative placement, but it would be better to add
> that to the _l flags used for the testsuite.
I couldn't find how to add it in libstdc++.exp.
"-L/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/libsupc++/.libs"
seems to have been passed down for toplevel. For C programs, libdir is
set specially but not for C++ programs.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
Date: Mon, 19 Feb 2018 16:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
--- Comment #61 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Feb 19 16:02:38 2018
New Revision: 257808
URL: https://gcc.gnu.org/viewcvs?rev=257808&root=gcc&view=rev
Log:
PR libstdc++/81797 Add .NOTPARALLEL to include/Makefile for darwin
Backport from mainline
2018-02-15 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/81797
* configure.ac (INCLUDE_DIR_NOTPARALLEL): Define.
* configure: Regenerate.
* include/Makefile.am (INCLUDE_DIR_NOTPARALLEL): Add .NOTPARALLEL when
defined.
* include/Makefile.in: Regenerate.
Modified:
branches/gcc-7-branch/libstdc++-v3/ChangeLog
branches/gcc-7-branch/libstdc++-v3/configure
branches/gcc-7-branch/libstdc++-v3/configure.ac
branches/gcc-7-branch/libstdc++-v3/include/Makefile.am
branches/gcc-7-branch/libstdc++-v3/include/Makefile.in
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/69331] FAIL: 20_util/shared_ptr/thread/default_weaktoshared.cc execution test
Date: Mon, 19 Feb 2018 16:08:00 -0000
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You can have a look e.g. how libgomp/testsuite/lib/*.exp finds -L options it
wants to add to find libstdc++ or libgfortran. That said, I think better would
be not to add this unconditionally to all libstdc++ tests, but add some
dg-add-libatomic-options or similar tcl code that would append it if some test
requests it.
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From: "benni.buch at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84469] New: [7/8 Regression] GCC rejects valid code in structured binding in range-based-for in template
Date: Mon, 19 Feb 2018 16:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84469
Bug ID: 84469
Summary: [7/8 Regression] GCC rejects valid code in structured
binding in range-based-for in template
Product: gcc
Version: 8.0.1
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struct A{
template < typename T >
void f()const{}
};
template < typename >
void foo(){
A a[1][1];
for(auto const& [b]: a){
b.f< int >();
}
}
int main(){
foo< int >();
}
Is a valid program.
$ g++ -std=c++17 main.cpp
main.cpp: In function 'void foo()':
main.cpp:10:14: error: expected primary-expression before 'int'
b.f< int >();
^~~
main.cpp:10:13: error: expected ';' before 'int'
b.f< int >();
^~~~
;
$ g++ --version
g++ (GCC) 8.0.1 20180219 (experimental)
Copyright (C) 2018 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.
$ g++-7 -std=c++17 main.cpp
main.cpp: In function 'void foo()':
main.cpp:10:14: error: expected primary-expression before 'int'
b.f< int >();
^~~
main.cpp:10:14: error: expected ';' before 'int'
$ g++-7 --version
g++ (GCC) 7.3.1 20180216
Copyright (C) 2017 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.
It is accepted without the structured binding:
struct A{
template < typename T >
void f()const{}
};
template < typename >
void foo(){
A a[1];
for(auto const& b: a){
b.f< int >(); // OK
}
}
int main(){
foo< int >();
}
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Subject: [Bug c++/84446] [8 Regression] ICE with broken lambda
Date: Mon, 19 Feb 2018 16:17:00 -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> ---
Jakub, alternately, the below appears to work, and avoids having to catch the
error_mark_node so late:
Index: parser.c
===================================================================
--- parser.c (revision 257801)
+++ parser.c (working copy)
@@ -19644,12 +19644,12 @@ cp_parser_init_declarator (cp_parser* parser,
member templates. The former involves deferring
parsing of the initializer until end of class as with default
arguments. So right here we only handle the latter. */
- if (!member_p && processing_template_decl)
+ if (!member_p && processing_template_decl && decl != error_mark_node)
start_lambda_scope (decl);
initializer = cp_parser_initializer (parser,
&is_direct_init,
&is_non_constant_init);
- if (!member_p && processing_template_decl)
+ if (!member_p && processing_template_decl && decl != error_mark_node)
finish_lambda_scope ();
if (initializer == error_mark_node)
cp_parser_skip_to_end_of_statement (parser);
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Subject: [Bug libstdc++/84442] FAIL: 30_threads/thread/cons/terminate.cc (test for excess errors)
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Does HPUX provide _exit() in <unistd.h> instead?
>From gcc-bugs-return-594045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 16:18:29 2018
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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++/84446] [8 Regression] ICE with broken lambda
Date: Mon, 19 Feb 2018 16:19:00 -0000
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--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
... well, I must add the diagnostic would be much more terse and similar to,
eg, clang's.
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Subject: [Bug libstdc++/84442] FAIL: 30_threads/thread/cons/terminate.cc (test for excess errors)
Date: Mon, 19 Feb 2018 16:21:00 -0000
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--- Comment #2 from dave.anglin at bell dot net ---
On 2018-02-19 11:17 AM, redi at gcc dot gnu.org wrote:
> Does HPUX provide _exit() in <unistd.h> instead?
Yes.
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Subject: [Bug libstdc++/84442] FAIL: 30_threads/thread/cons/terminate.cc (test for excess errors)
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
Ever confirmed|0 |1
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
OK then this should help:
--- a/libstdc++-v3/testsuite/30_threads/thread/cons/terminate.cc
+++ b/libstdc++-v3/testsuite/30_threads/thread/cons/terminate.cc
@@ -25,10 +25,19 @@
#include <thread>
#include <exception>
#include <cstdlib>
+#if !_GLIBCXX_USE_C99_STDLIB && defined _GLIBCXX_HAVE_UNISTD_H
+# include <unistd.h>
+#endif
void handle_terminate()
{
+#if _GLIBCXX_USE_C99_STDLIB
std::_Exit(0);
+#elif defined _GLIBCXX_HAVE_UNISTD_H
+ _exit(0);
+#else
+ std::exit(0);
+#endif
}
void f() { throw 1; }
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Subject: [Bug libstdc++/84442] FAIL: 30_threads/thread/cons/terminate.cc (test for excess errors)
Date: Mon, 19 Feb 2018 16:25:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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From: "steven at uplinklabs dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/84450] bootstrap-lto ICE in g-dyntab.adb
Date: Mon, 19 Feb 2018 16:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84450
--- Comment #1 from Steven Noonan <steven at uplinklabs dot net> ---
Sorry for the comment spam, but...
I think DMARC/DKIM caused the notification for this bug to drop on the floor,
as I saw a DMARC report for my domain saying 65 messages on *@gnu.org were
rejected because they didn't originate from my domain's mailservers and didn't
have the right DKIM signature. I've changed my domain's DMARC policy to "none"
so hopefully messages forged by Bugzilla don't drop anymore, until I can figure
out a better policy.
Adding this comment to make sure this issue gets seen at least once on the
mailing list.
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From: "itsimbal at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84148] CET shouldn't be enabled in 32-bit run-time libraries by default
Date: Mon, 19 Feb 2018 16:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84148
--- Comment #16 from itsimbal at gcc dot gnu.org ---
Author: itsimbal
Date: Mon Feb 19 16:25:49 2018
New Revision: 257809
URL: https://gcc.gnu.org/viewcvs?rev=257809&root=gcc&view=rev
Log:
CET shouldn't be enabled in 32-bit run-time libraries by defualt
ENDBR32 and RDSSPD are multi-byte NOPs on x86-64 processors and
newer x86 processors, starting Pentium Pro. They are UD on older
32-bit processors. Detect this at configure time and adjust the
default value for enable_cet. GCC will enable CET in 32-bit run-time
libraries in any case if --enable-cet is used to configure GCC.
PR target/84148
* config/cet.m4: Check if target support multi-byte NOPS (SSE).
* libatomic/configure: Regenerate.
* libbacktrace/configure: Likewise.
* libgcc/configure: Likewise.
* libgfortran/configure: Likewise.
* libgomp/configure: Likewise.
* libitm/configure: Likewise.
* libmpx/configure: Likewise.
* libobjc/configure: Likewise.
* libquadmath/configure: Likewise.
* libsanitizer/configure: Likewise.
* libssp/configure: Likewise.
* libstdc++-v3/configure: Likewise.
* libvtv/configure: Likewise.
Modified:
trunk/config/ChangeLog
trunk/config/cet.m4
trunk/libatomic/ChangeLog
trunk/libatomic/configure
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/configure
trunk/libgcc/ChangeLog
trunk/libgcc/configure
trunk/libgfortran/ChangeLog
trunk/libgfortran/configure
trunk/libgomp/ChangeLog
trunk/libgomp/configure
trunk/libitm/ChangeLog
trunk/libitm/configure
trunk/libmpx/ChangeLog
trunk/libmpx/configure
trunk/libobjc/ChangeLog
trunk/libobjc/configure
trunk/libquadmath/ChangeLog
trunk/libquadmath/configure
trunk/libsanitizer/ChangeLog
trunk/libsanitizer/configure
trunk/libssp/ChangeLog
trunk/libssp/configure
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/configure
trunk/libvtv/ChangeLog
trunk/libvtv/configure
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Subject: [Bug target/84460] [8 regression] gcc.target/i386/pr57193.c fail
Date: Mon, 19 Feb 2018 16:31:00 -0000
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--- Comment #3 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Mon Feb 19 16:28:39 2018
New Revision: 257810
URL: https://gcc.gnu.org/viewcvs?rev=257810&root=gcc&view=rev
Log:
2018-01-16 Sebastian Peryt <sebastian.peryt@intel.com>
PR target/84460
* gcc.target/i386/pr57193.c: Add -mtune=generic.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/pr57193.c
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Subject: [Bug target/84460] [8 regression] gcc.target/i386/pr57193.c fail
Date: Mon, 19 Feb 2018 16:32:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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CC| |law at redhat dot com
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--- Comment #4 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on trunk.
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/79854] diagnostics: gfc_conv_constant_to_tree should be gfc_internal_error
Date: Mon, 19 Feb 2018 16:32:00 -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 Eric Gallager from comment #2)
> (In reply to Dominique d'Humieres from comment #1)
> > AFAICT this internal error has never triggered. If someone can come with a
> > test for it, this would be nice.
>
> In the meantime, though, I think it'd make sense just to change it to an
> internal error anyways (even without a testcase), for translation purposes
Unless someone can trigger this error or can prove that gfc_internal_error
is available when the error ought to trigger, then please leave the
code as is.
fatal_error() is used in a number places because gfortran's error mechanism
is not available. See gfc_init() and gfc_init_1().
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Subject: [Bug fortran/79854] diagnostics: gfc_conv_constant_to_tree should be gfc_internal_error
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Priority|P3 |P5
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Subject: [Bug c/81272] libdecnumber/decNumber.c:6032: wrong condition ?
Date: Mon, 19 Feb 2018 16:54:00 -0000
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--- Comment #2 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to Martin Liška from comment #1)
> Confirmed, it's not consistent. Let me fix that.
Seven months later, it seems to me to be still not fixed.
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If glibc implements a faster exp10/exp10f, we could do what I've done for
PR84309 and expand pow (10, x) as exp10 (x) and pow (C, x) where C is pow (10,
N) for integral N as exp10 (log10 (C) * x).
Even if it doesn't, there is some chance that perhaps 628.pop2_s propagates a
constant into that x of pow (10, x), so in theory even just deferring the
folding to after vectorization like we do for C which is pow (2, N) for
integral N might help.
Looking at
http://oceans11.lanl.gov/trac/POP/browser/branches/ice_shelf_partial_cells/source/sw_absorption.F90?rev=373&order=name&desc=True
I think that actually is the case here.
>From that source (haven't looked at SPEC2k17) it seems it is essentially:
! PR middle-end/82004
! { dg-do run }
! { dg-options "-Ofast" }
integer, parameter :: r8 = selected_real_kind(13), i4 = kind(1)
integer (i4), parameter :: a = 400, b = 2
real (r8), parameter, dimension(b) :: c = (/ .001_r8, 10.00_r8 /)
real (r8) :: d, e, f, g, h, j
d = c(1)
e = c(b)
f = (log10(e)-log10(d))/real(a)
g = log10(d) - f
h = 10**(g)
j = 10
j = j**(g)
if (h.ne.j) stop 1
end
(with the j and j = 10; j = j**(g); if (h.ne.j) stop 1 added by me to make it
fail when miscompiled).
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
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--- Comment #62 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Feb 19 17:02:38 2018
New Revision: 257811
URL: https://gcc.gnu.org/viewcvs?rev=257811&root=gcc&view=rev
Log:
PR libstdc++/81797 Add .NOTPARALLEL to include/Makefile for darwin
Backport from mainline
2018-02-15 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/81797
* configure.ac (INCLUDE_DIR_NOTPARALLEL): Define.
* configure: Regenerate.
* include/Makefile.am (INCLUDE_DIR_NOTPARALLEL): Add .NOTPARALLEL when
defined.
* include/Makefile.in: Regenerate.
Modified:
branches/gcc-6-branch/libstdc++-v3/ChangeLog
branches/gcc-6-branch/libstdc++-v3/configure
branches/gcc-6-branch/libstdc++-v3/configure.ac
branches/gcc-6-branch/libstdc++-v3/include/Makefile.am
branches/gcc-6-branch/libstdc++-v3/include/Makefile.in
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Subject: [Bug ada/84277] [8 Regression] A lot of new acats testsuite failures
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--- Comment #9 from Rainer Emrich <rainer@emrich-ebersheim.de> ---
Update on the gnat testsuite:
=== gnat tests ===
Schedule of variations:
unix
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using
/opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/config/default.exp as
tool-and-target-specific interface file.
Running /opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/gnat.dg/dg.exp
...
FAIL: gnat.dg/entry_queues.adb execution test
FAIL: gnat.dg/handle_and_return.adb execution test
XPASS: gnat.dg/lto19.adb (test for excess errors)
FAIL: gnat.dg/nested_controlled_alloc.adb execution test
FAIL: gnat.dg/timer_cancel.adb execution test
Running
/opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/gnat.dg/gcov/gcov.exp
...
Running
/opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/gnat.dg/specs/specs.exp
...
Running
/opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/gnat.dg/sso/sso.exp
...
=== gnat Summary ===
# of expected passes 2687
# of unexpected failures 4
# of unexpected successes 1
# of expected failures 22
# of unsupported tests 6
/opt/devel/SCRATCH/tmp.e2kXrnqZV0/gcc-8.0.0/gcc-8.0.0/gcc/gnatmake version
8.0.1 20180219 (experimental) [trunk revision 257803]
Improved by 11 tests which PASS.
acats tests without -fno-reorder-blocks-and-partition still at 314 failures.
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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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 #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43464
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43464&action=edit
gcc8-pr82004.patch
Thus, does this fix the miscompare? I'll bootstrap/regtest it on x86_64-linux
and i686-linux, but don't have SPEC2k17 around.
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Subject: [Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #63 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Workaround in place for 6.4, 7.4 and 8.1
For older releases don't build libstdc++ with -j or hack the sources (at least
until APFS gets fixed).
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #16 from Andrey Guskov <andrey.y.guskov at intel dot com> ---
Oh wow, that was unexpected!
Will test and report back ASAP.
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Subject: [Bug c++/84468] [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
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Sérgio Basto <sergio at serjux dot com> changed:
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----------------------------------------------------------------------------
CC| |sergio at serjux dot com
--- Comment #1 from Sérgio Basto <sergio at serjux dot com> ---
btw and this warning [1] make sense ?
[1]
mongoose.c: In function 'mg_resolve_async_opt':
mongoose.c:10791:3: error: 'strncpy' specified bound 1024 equals destination
size [-Werror=stringop-truncation]
strncpy(req->name, name, sizeof(req->name));
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Subject: [Bug tree-optimization/84443] powerpc suboptimal code generation (shrink wrap unlikely path) for Linux spinlocks
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #17 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #15)
> Created attachment 43464 [details]
> gcc8-pr82004.patch
>
> Thus, does this fix the miscompare? I'll bootstrap/regtest it on
> x86_64-linux and i686-linux, but don't have SPEC2k17 around.
It can't since the pow is in a loop:
do n=0,nsub
logchl = logchl + dlogchl
chlamnt = 10**(logchl)
As noted above the code is very badly written, it expects pow(10,log10(x)) to
be bit-identical for any x. Even perfect rounding cannot avoid 0.5ULP
worst-case error.
>From gcc-bugs-return-594066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 17:40:05 2018
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Wilco from comment #17)
> (In reply to Jakub Jelinek from comment #15)
> > Created attachment 43464 [details]
> > gcc8-pr82004.patch
> >
> > Thus, does this fix the miscompare? I'll bootstrap/regtest it on
> > x86_64-linux and i686-linux, but don't have SPEC2k17 around.
>
> It can't since the pow is in a loop:
>
> do n=0,nsub
> logchl = logchl + dlogchl
> chlamnt = 10**(logchl)
Ugh, you're right. Despite that, I think my patch is useful anyway if the x
folds into a constant, or even just as a simpler/smaller representation through
most of the optimization passes.
With the delayed folding of this, perhaps some loop optimization could note
that we have:
for (n = 0; n < nsub - 1; n++)
{
chlamnt = pow (10, constant + (n + 1) * constant2);
...
}
and turn that (-Ofast) into
chlamnt = pow (10, constant);
chlamnt_step = pow (10, constant2);
for (n = 0; n < nsub - 1; n++)
{
chlamnt = chlamnt * chlamnt_step;
...
}
>From gcc-bugs-return-594065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 17:24:06 2018
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Subject: [Bug lto/81968] [8 regression] early lto debug objects make Solaris ld SEGV
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #61 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There is always the main .debug_macro section that holds the whole TU stuff and
then .debug_macro comdat section for each of the files the TU includes, where
each of them contains snippet that is imported either by the whole TU sequence
or some other source file sequence.
>From gcc-bugs-return-594067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 17:40:16 2018
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Subject: [Bug target/81693] FAIL: gcc.dg/torture/pr25967-*.c -O* execution test on darwin
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--- Comment #30 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I have submitted a patch some time ago at
https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00939.html
Mike asked for some changes and I got distracted before being able to fulfill
the requests.
I can do it in the coming week, but if someone want to do it sooner, there is
no problem.
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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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> ---
In any case, having a fast and at least for double precise exp10 in glibc would
be also beneficial, then this issue would go away at least on glibc targets.
>From gcc-bugs-return-594069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 17:59:56 2018
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Subject: [Bug tree-optimization/82965] [8 regression][armeb] gcc.dg/vect/pr79347.c starts failing after r254379
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--- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to bin.cheng from comment #10)
> a proposed patch @https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02419.html
adding "patch" keyword then
>From gcc-bugs-return-594070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 18:06:34 2018
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Subject: [Bug middle-end/68733] [6/7/8 Regression] FAIL: libgomp.c/target-29.c (internal compiler error)
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--- Comment #15 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #12)
> Work around installed:
> https://gcc.gnu.org/ml/gcc-patches/2016-12/msg00967.html
installed or just submitted?
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #20 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #19)
> In any case, having a fast and at least for double precise exp10 in glibc
> would be also beneficial, then this issue would go away at least on glibc
> targets.
Yes, indeed. The key question is how do we know we are linking with GLIBC
(including from Fortran, where there are no headers)?
>From gcc-bugs-return-594072-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 18:13:42 2018
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Any way we like, like a target hook (e.g. extend libc_has_function targhook,
though it is more about presence of APIs rather than their performance; on the
other side it is the closest API we have right now), macro, etc.
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Subject: [Bug fortran/80945] Invalid code with allocatable character array in READ/WRITE statement
Date: Mon, 19 Feb 2018 18:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80945
--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Mon Feb 19 18:21:45 2018
New Revision: 257814
URL: https://gcc.gnu.org/viewcvs?rev=257814&root=gcc&view=rev
Log:
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* frontend-passes.c (traverse_io_block): Remove workaround for
PR 80945.
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* gfortran.dg/implied_do_io_4.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/implied_do_io_4.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/frontend-passes.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/35339] Improve translation of implied do loop in transfer
Date: Mon, 19 Feb 2018 18:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35339
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed (finally).
Closing.
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Subject: [Bug fortran/35339] Improve translation of implied do loop in transfer
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35339
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Mon Feb 19 18:21:45 2018
New Revision: 257814
URL: https://gcc.gnu.org/viewcvs?rev=257814&root=gcc&view=rev
Log:
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* frontend-passes.c (traverse_io_block): Remove workaround for
PR 80945.
2018-02-19 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/35339
* gfortran.dg/implied_do_io_4.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/implied_do_io_4.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/frontend-passes.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/25829] [F03] Asynchronous IO support
Date: Mon, 19 Feb 2018 18:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25829
Bug 25829 depends on bug 35339, which changed state.
Bug 35339 Summary: Improve translation of implied do loop in transfer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35339
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Subject: [Bug c/81272] libdecnumber/decNumber.c:6032: wrong condition ?
Date: Mon, 19 Feb 2018 18:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81272
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 19 18:29:20 2018
New Revision: 257815
URL: https://gcc.gnu.org/viewcvs?rev=257815&root=gcc&view=rev
Log:
Do not use bit and for conjunction of predicates (PR c/81272).
2018-02-19 Martin Liska <mliska@suse.cz>
PR c/81272
* decNumber.c (decCompareOp): Do not use bit and
for conjunction of predicates.
Modified:
trunk/libdecnumber/ChangeLog
trunk/libdecnumber/decNumber.c
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Subject: [Bug tree-optimization/82491] UBSAN in gcc/gimple-fold.c:6187:6: runtime error: signed integer overflow: 9223372036854775807 * 8 cannot be represented in type 'long int'
Date: Mon, 19 Feb 2018 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82491
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 19 18:29:52 2018
New Revision: 257816
URL: https://gcc.gnu.org/viewcvs?rev=257816&root=gcc&view=rev
Log:
Fix ubsan in gimple-fold.c (PR tree-optimization/82491).
2018-02-19 Martin Liska <mliska@suse.cz>
Richard Sandiford <richard.sandiford@linaro.org>
PR tree-optimization/82491
* gimple-fold.c (get_base_constructor): Make earlier bail out
to prevent ubsan.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-fold.c
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Subject: [Bug sanitizer/82183] gcc.dg/sancov/cmp0.c fails on aarch64
Date: Mon, 19 Feb 2018 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82183
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 19 18:30:31 2018
New Revision: 257817
URL: https://gcc.gnu.org/viewcvs?rev=257817&root=gcc&view=rev
Log:
Put pass_sancov_O0 before pass_lower_switch with -O0 (PR sanitizer/82183).
2018-02-19 Martin Liska <mliska@suse.cz>
PR sanitizer/82183
* passes.def: Put pass_sancov_O0 before pass_lower_switch with -O0.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/passes.def
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Subject: [Bug c/81272] libdecnumber/decNumber.c:6032: wrong condition ?
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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> ---
Not it's fixed ;) I'm not planning to backport that.
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Subject: [Bug sanitizer/82183] gcc.dg/sancov/cmp0.c fails on aarch64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82183
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-594082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 18:35:23 2018
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From: "cel at us dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84371] test case gcc.target/powerpc/builtins-3.c fails on power9
Date: Mon, 19 Feb 2018 18:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84371
--- Comment #2 from Carl Love <cel at us dot ibm.com> ---
Will:
Here is the bug report I just got from Peter. From our sametime
conversation sounds like you have addressed these in a recent update.
Take a look, may be that Peter needs to update his tree????
Carl
On Mon, 2018-02-19 at 16:22 +0000, bergner at gcc dot gnu.org wrote:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__gcc.gnu.org_bugz
> illa_show-5Fbug.cgi-3Fid-3D84371&d=DwIFaQ&c=jf_iaSHvJObTbx-
> siA1ZOg&r=RFEmMkZAk--_wFGN5tkM_A&m=KakkHTM7gWnvABQzEIFU4wyGWq_1-
> lFbt1DyIEjX8s8&s=WSpl7W2dIBon1uGdUhwW9CIOG9X_PMNcNiV7aqRuPXs&e=
>
> Peter Bergner <bergner at gcc dot gnu.org> changed:
>
>            What    |Removed                     |Added
> -------------------------------------------------------------------
> ---------
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â URL|Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |https://urldefense.p
> roofpoint.com/v2/url?u=https-3A__gcc.gnu.org_ml_gcc-
> 2D&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=RFEmMkZAk
> --_wFGN5tkM_A&m=KakkHTM7gWnvABQzEIFU4wyGWq_1-
> lFbt1DyIEjX8s8&s=FDyAZOw6NwZxSBmmKn2eKIEv5rTNen7rU8toxwggWJs&e=
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |patches/2018-
> 02/msg00937.ht
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |ml
> Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â CC|Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |bergner at gcc dot
> gnu.org
>
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
Date: Mon, 19 Feb 2018 18:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715
--- Comment #23 from Martin Liška <marxin at gcc dot gnu.org> ---
> One side issue that is not solved at all by the patch is
> -fsanitize-address-use-after-scope, since that still leads to extreme stack
> usage in the kernel. The problem here is that it forces many local variables
> into separate stack slots even when they could get reused without
> -fsanitize-address-use-after-scope, making it still actively dangerous to
> run kernels built with this option.
Note that's crucial to have separate stack slots to properly catch usage of a
stack variable that's our of scope.
> My workaround in the kernel is now to have that option disabled by default
> and only enabled when users explicitly turn it on. I still think it would be
> nice to address that in the way I originally suggested, by copying the
> behavior that LLVM uses with its variably sized redzone area.
That's definitely possible for GCC 9. Question is whether such change will be
sufficient for you. Do you expect it will reduce stack usage in the desired
way?
>From gcc-bugs-return-594084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 18:40:58 2018
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Subject: [Bug target/82989] [6/7/8 regression] Inexplicable use of NEON for 64-bit math
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--- Comment #19 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to sudi from comment #17)
> Since this looks like a pretty invasive problem, according to my discussions
> with Wilco and Kyrill, I think I will try to propose a smaller, but
> temporary fix using the ?s and special casing 32 for this PR (which could go
> in sooner). I will also open a new PR to handle this at the expand phase and
> clean up the code aimed at gcc 9.
Looking the history it seems the bad ?'s have been there a long time, since at
least 2010. Initially the patterns used "w, ?r", thus forcing use of Neon in
most cases. This was quickly discovered to be a bad idea and changed into "w,
?r, ?w" with the first w only enabled for non-cortex-a8 cores. Later "onlya8"
was renamed to "avoid_neon_for_64bits" which remains the default today
(eventhough that name doesn't actually mean what it says...).
The anddi3_insn/iordi3_insn/xordi3_inst patterns were fixed by
8ee7dc6fa1a663c9eea8043f84951c1e073468ff when they were merged back into
arm.md, so those use "w, r, ?w".
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Subject: [Bug c++/55922] brace initializing parent cause bogus virtual base constructor calls
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--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The testcase in comment 1 originally made three calls to _ZN4BaseC2Ev until
r238688 when it made two, and then only one call after r238689 (the fix for PR
66617).
So it looks like the reason it's still wrong on gcc-6-branch is that r238689
isn't on the branch.
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Subject: [Bug gcov-profile/47618] Collecting multiple profiles and using all for PGO
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug testsuite/80551] c-c++-common/tsan/race_on_mutex.c fails on powerpc
Date: Mon, 19 Feb 2018 18:45:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I've just used gcc110 and gcc112 machine (ppc64 and ppc64le) and both print
following stack-trace in the tsan error:
#0 memset
../../../../libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:709
(libtsan.so.0+0x55abc)
#1 __GI___pthread_mutex_init <null> (libpthread.so.0+0xf2ac)
#2 Thread1 c-c++-common/tsan/race_on_mutex.c:12
(race_on_mutex.exe+0x10000f00)
I also verified that non-sanitized version in gdb also has missing source file
for the __GI___pthread_mutex_init function. Thus '<null>' is here proper value.
Can you seurer test the problematic ppc64 machine where you see:
#1 <null> <null>
What do you see in gdb if you put a breakpoint to memset function?
Thanks
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Subject: [Bug testsuite/80551] c-c++-common/tsan/race_on_mutex.c fails on powerpc
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79064
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It fails on i686-linux too, I bet pretty much all ILP32 targets.
So, either we can go for something like:
--- gcc/testsuite/g++.dg/template/overload15.C.jj 2018-02-16
23:37:28.682364104 +0100
+++ gcc/testsuite/g++.dg/template/overload15.C 2018-02-19 19:42:39.408037955
+0100
@@ -1,11 +1,17 @@
// PR c++79064 - Cannot overload member function templates on type of literal
// { dg-do compile }
+#if __SIZEOF_LONG_LONG__ > __SIZEOF_INT__
template <unsigned N>
void f (char (*)[0u - 1 > N ? 1 : 7]);
+#if __SIZEOF_LONG__ > __SIZEOF_INT__
template <unsigned N>
void f (char (*)[0u - 1l > N ? 1 : 7]);
+#else
+template <unsigned N>
+void f (char (*)[0u - 1ll > N ? 1 : 7]);
+#endif
void f ()
{
@@ -14,3 +20,6 @@ void f ()
f<0>(&x);
f<0>(&y);
}
+#else
+int i;
+#endif
or, assuming on all targets we support long long is wider than int (I think
that is the case on all current targets) just a simple:
2018-02-19 Jakub Jelinek <jakub@redhat.com>
PR c++/79064
* g++.dg/template/overload15.C (f): Use 0u - 1ll instead of 0u - 1l.
--- gcc/testsuite/g++.dg/template/overload15.C.jj 2018-02-16
23:37:28.682364104 +0100
+++ gcc/testsuite/g++.dg/template/overload15.C 2018-02-19 19:45:48.771094113
+0100
@@ -5,7 +5,7 @@ template <unsigned N>
void f (char (*)[0u - 1 > N ? 1 : 7]);
template <unsigned N>
-void f (char (*)[0u - 1l > N ? 1 : 7]);
+void f (char (*)[0u - 1ll > N ? 1 : 7]);
void f ()
{
which I'll commit momentarily.
Even on x86_64-linux, you should have spotted when adding the testcase,
make check-c++-all RUNTESTFLAGS='--target_board=unix\{-m32,-m64\}
dg.exp=overload15.C'
reproduces the problem and is something people should do to catch issues like
this.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79064
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 18:49:21 2018
New Revision: 257818
URL: https://gcc.gnu.org/viewcvs?rev=257818&root=gcc&view=rev
Log:
PR c++/79064
* g++.dg/template/overload15.C (f): Use 0u - 1ll instead of 0u - 1l.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/template/overload15.C
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
Date: Mon, 19 Feb 2018 18:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68356
--- Comment #14 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I'd expect any complete patch default to -fno-math-errno to add
-fmath-errno to all tests relating to errno setting by libm functions (so
that patch was incomplete for lack of test updates). Those tests,
independently, should be disabled on platforms which do not support errno
setting in libm.
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Subject: [Bug middle-end/68733] [6/7/8 Regression] FAIL: libgomp.c/target-29.c (internal compiler error)
Date: Mon, 19 Feb 2018 18:58:00 -0000
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--- Comment #16 from dave.anglin at bell dot net ---
The change is installed and it's now the default on hppa-linux. This is
an ABI change
and I don't plan to change the default on 32-bit hpux.
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Subject: [Bug tree-optimization/84452] [8 Regression] ICE in expand_simd_clones at gcc/omp-simd-clone.c:1612
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 18:58:13 2018
New Revision: 257819
URL: https://gcc.gnu.org/viewcvs?rev=257819&root=gcc&view=rev
Log:
PR tree-optimization/84452
* tree-vect-patterns.c (vect_recog_pow_pattern): Don't call
expand_simd_clones if targetm.simd_clone.compute_vecsize_and_simdlen
is NULL.
* gcc.dg/pr84452.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr84452.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-patterns.c
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Subject: [Bug driver/83193] Help for invalid -march= options from cc1 omits -march=native on x86-64, arm. aarch64, output also inconsistent
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--- Comment #4 from Andrew Roberts <andrewm.roberts at sky dot com> ---
Correct, it does not show native in the list of valid options presented to the
user.
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Subject: [Bug c++/84430] [7/8 Regression] ICE with #pragma omp simd in lambda
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 19:12:14 2018
New Revision: 257820
URL: https://gcc.gnu.org/viewcvs?rev=257820&root=gcc&view=rev
Log:
PR c++/84430
* constexpr.c (potential_constant_expression_1): Handle OMP_SIMD.
* g++.dg/gomp/pr84430.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/gomp/pr84430.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84448] [6/7/8 Regression] ICE with broken condition in parallel for loop
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 19:16:26 2018
New Revision: 257821
URL: https://gcc.gnu.org/viewcvs?rev=257821&root=gcc&view=rev
Log:
PR c++/84448
* parser.c (cp_parser_binary_expression): For no_toplevel_fold_p, if
either operand is error_mark_node, set current.lhs to that instead of
creating a binary op with error_mark_node operands.
* g++.dg/gomp/pr84448.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/gomp/pr84448.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/32306] [6/7/8 Regression] redundant && || not eliminated
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|6.5 |9.0
--- Comment #38 from Jeffrey A. Law <law at redhat dot com> ---
So I prototyped the idea in c#37. It helps, but is not sufficient to address
this case. Given that it doesn't fully address this case, I don't think it's
warranted at this stage in development. I'll queue it up for gcc-9. I'm also
going to push this BZ out to gcc-9.
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Subject: [Bug c++/84448] [6/7 Regression] ICE with broken condition in parallel for loop
Date: Mon, 19 Feb 2018 19:32:00 -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
Summary|[6/7/8 Regression] ICE with |[6/7 Regression] ICE with
|broken condition in |broken condition in
|parallel for loop |parallel for loop
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug c++/84430] [7 Regression] ICE with #pragma omp simd in lambda
Date: Mon, 19 Feb 2018 19:32:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE with |[7 Regression] ICE with
|#pragma omp simd in lambda |#pragma omp simd in lambda
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug tree-optimization/84452] [8 Regression] ICE in expand_simd_clones at gcc/omp-simd-clone.c:1612
Date: Mon, 19 Feb 2018 19:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
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Subject: [Bug c++/84463] Supposedly-incompliant "error: '* key0' is not a constant expression"
Date: Mon, 19 Feb 2018 19:37:00 -0000
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--- Comment #1 from sergey.ignatchenko at ithare dot com ---
oops, forgot to mention command line:
g++ -std=c++1z -lstdc++ -Werror ../chachatest.cpp
where chachatest.cpp is provided in "CODE" section above
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Subject: [Bug c++/84444] ICE with __builtin_launder and cast
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 19:36:41 2018
New Revision: 257822
URL: https://gcc.gnu.org/viewcvs?rev=257822&root=gcc&view=rev
Log:
PR c++/84444
* builtins.c (builtin_mathfn_code): Don't check if CALL_EXPR_FN (t)
is ADDR_EXPR.
* g++.dg/cpp1z/launder8.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/launder8.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84444] ICE with __builtin_launder and cast
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug debug/83935] DWARF for a variant part is incorrect
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--- Comment #7 from Tom Tromey <tromey at gcc dot gnu.org> ---
For Rust I ended up following the letter of the standard, so I'm going
to follow this in the gdb patches as well. That said, gdb can be adapted
to work with either approach, so it's not strictly necessary to change
gcc here, perhaps depending on resolution of that DWARF issue.
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Subject: [Bug fortran/35339] Improve translation of implied do loop in transfer
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--- Comment #15 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #14)
> Fixed (finally).
>
> Closing.
Thanks Thomas!
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Subject: [Bug c++/84378] Misleading diagnostics when using ambiguous names for ptr to memfun args in member fn
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to petschy from comment #0)
> In both cases there is some misleading 'noise' in the diagnostics.
The problem is that the ambiguity means the declarator can't be parsed, so it
gets given a type of 'void', which then triggers further errors where 'void'
isn't allowed.
In this specific case the ambiguity could be tentatively resolved in favour of
the valid type (i.e. assume the typedef-name is meant, because that gives a
valid function type) which would prevent the misleading noise. But that's
probably not possible in the general case, so maybe we should just stop
checking for errors after the ambiguity is found.
>From gcc-bugs-return-594107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:07:04 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84371] test case gcc.target/powerpc/builtins-3.c fails on power9
Date: Mon, 19 Feb 2018 20:10:00 -0000
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--- Comment #3 from Will Schmidt <willschm at gcc dot gnu.org> ---
(In reply to seurer from comment #1)
> In addition to trunk this also fails with gcc 7
Yup.
There was/is an ice in one of the builtins-3.* tests that should be better now
, per https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84422#c1
it is in my queue to re-check the results, and possibly loosen up the requires
or options on one of the tests. I'll pursue a backport to gcc7 after I check
that over.
>From gcc-bugs-return-594108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:10:37 2018
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Subject: [Bug testsuite/80551] c-c++-common/tsan/race_on_mutex.c fails on powerpc
Date: Mon, 19 Feb 2018 20:22:00 -0000
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Nothing, it never reaches memset before it exits.
>From gcc-bugs-return-594109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:22:56 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/79096] [7/8 Regression] address sanitizer and jni does not work
Date: Mon, 19 Feb 2018 20:34:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |9.0
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There is no progress on this upstream, the question is if this is actually a
sanitizer bug at all rather than whatever Java version you are using.
Is java a binary or a shell script that tweaks environment variables?
In any case, retargetting to GCC 9 for now, because we aren't going to merge
another libsanitizer from upstream at this point.
>From gcc-bugs-return-594110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:34:39 2018
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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/84470] New: test for address of member being null not eliminated
Date: Mon, 19 Feb 2018 20:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84470
Bug ID: 84470
Summary: test for address of member being null not eliminated
Product: gcc
Version: 8.0
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Priority: P3
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The address of a member subobject can never be null. If it were, the address
if the enclosing object would either have to be null which would make the
member access expression (i.e., p->member) undefined, or the address of the
object would have such that adding the offset of the member to it would wrap
around zero, which would make the addition undefined.
As a result, tests for the address of a member object being null can be
eliminated.
The test case below shows that GCC doesn't take advantage of this invariant.
In constrast, Clang does take advantage of it for all but the first member.
$ cat a.c && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout a.c
struct A
{
char a[4];
};
void f (struct A *p)
{
if (p->a == 0) // could only be true when p is null
__builtin_abort (); // can be eliminated
}
struct B
{
char a[4];
};
void b (struct B *p)
{
if (p->a == 0) // can never be true
__builtin_abort (); // can be eliminated (as Clang does)
}
;; Function f (f, funcdef_no=0, decl_uid=1959, cgraph_uid=0, symbol_order=0)
f (struct A * p)
{
char[4] * _1;
<bb 2> [local count: 1073741825]:
_1 = &p_2(D)->a;
if (_1 == 0B)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [99.96%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073312327]:
return;
}
;; Function b (b, funcdef_no=1, decl_uid=1964, cgraph_uid=1, symbol_order=1)
b (struct B * p)
{
char[4] * _1;
<bb 2> [local count: 1073741825]:
_1 = &p_2(D)->a;
if (_1 == 0B)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [99.96%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073312327]:
return;
}
>From gcc-bugs-return-594111-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:42:18 2018
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Subject: [Bug tree-optimization/84470] test for address of member being null not eliminated
Date: Mon, 19 Feb 2018 20:48:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
I can't see the difference between the 2 cases?
clang gives for both:
warning: comparison of array 'p->a' equal to a null pointer is always false
[-Wtautological-pointer-compare]
>From gcc-bugs-return-594112-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 20:48:01 2018
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From: "jengelh at inai dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84471] New: Instruction reordering happens in lambdas even with -O0
Date: Mon, 19 Feb 2018 21:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84471
Bug ID: 84471
Summary: Instruction reordering happens in lambdas even with
-O0
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Expected behavior:
Objects built with -O0 ought not cause gdb to spuriously "go backwards" in
source (for reasons other than the end of a loop).
Observed behavior:
Despite being explicitly built with no optimizations, I observe that gdb jumps
around inside C++ programs' lambdas that capture something.
#include <cstring>
#include <utility>
#define N 256
int main()
{
const char key[] = "keykeykeykeykeykey";
[&]() {
unsigned char S[N];
int len = strlen(key);
int j = 0;
for (int i = 0; i < N; ++i)
j = (j + S[i] + key[i%len]) % N;
}();
}
Using built-in specs.
COLLECT_GCC=g++-7
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/7/lto-wrapper
OFFLOAD_TARGET_NAMES=hsa:nvptx-none
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,ada,go
--enable-offload-targets=hsa,nvptx-none=/usr/nvptx-none, --without-cuda-driver
--enable-checking=release --disable-werror
--with-gxx-include-dir=/usr/include/c++/7 --enable-ssp --disable-libssp
--disable-libvtv --disable-libcc1 --enable-plugin
--with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit
--enable-libstdcxx-allocator=new --disable-libstdcxx-pch
--enable-version-specific-runtime-libs --with-gcc-major-version-only
--enable-linker-build-id --enable-linux-futex --enable-gnu-indirect-function
--program-suffix=-7 --without-system-libunwind --enable-multilib
--with-arch-32=x86-64 --with-tune=generic --build=x86_64-suse-linux
--host=x86_64-suse-linux
Thread model: posix
gcc version 7.3.0 (SUSE Linux)
$ g++-7 x.cpp -O0 -ggdb3 -fno-reorder-blocks -fno-reorder-blocks-and-partition
-fno-reorder-functions
$ gdb a.out
GNU gdb (GDB; openSUSE Tumbleweed) 8.0.1
(gdb) b main
Breakpoint 1 at 0x4005c0: file x.cpp, line 6.
(gdb) r
Breakpoint 1, main () at x.cpp:6
6 const char key[] = "keykeykeykeykeykey";
(gdb) s
13 }();
(gdb)
<lambda()>::operator()(void) const (__closure=0x7fffffffdd98) at x.cpp:9
9 int len = strlen(key);
(gdb) n
10 int j = 0;
(gdb)
11 for (int i = 0; i < N; ++i)
(gdb)
12 j = (j + S[i] + key[i%len]) % N;
(gdb)
9 int len = strlen(key);
(gdb)
12 j = (j + S[i] + key[i%len]) % N;
Expected behavior:
Never reach line 9 again.
>From gcc-bugs-return-594113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:02:36 2018
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From: "fortranfan at outlook dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/84472] New: Missing finalization and memory leak
Date: Mon, 19 Feb 2018 21:14:00 -0000
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Bug ID: 84472
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Consider the following:
--- begin console output ---
C:\Temp>type m.f90
module m
use, intrinsic :: iso_fortran_env, only : output_unit
implicit none
private
type :: t
private
character(len=:), pointer :: m_s => null()
contains
private
final :: final_t
procedure, pass(this), public :: clean => clean_t
procedure, pass(this), public :: init => init_t
end type
interface t
module procedure :: construct_t
end interface
public :: t
contains
function construct_t( name ) result(new_t)
! argument list
character(len=*), intent(in), optional :: name
! function result
type(t) :: new_t
if ( present(name) ) then
call new_t%init( name )
end if
end function
subroutine final_t( this )
! argument list
type(t), intent(inout) :: this
write( output_unit, fmt="(g0)", advance="no" ) "finalizer invoked"
if ( associated(this%m_s) ) then
write( output_unit, fmt=* ) "for object ", trim(this%m_s)
else
write( output_unit, fmt=* )
end if
call clean_t( this )
end subroutine
subroutine clean_t( this )
! argument list
class(t), intent(inout) :: this
if ( associated(this%m_s) ) then
deallocate( this%m_s )
end if
this%m_s => null()
end subroutine
subroutine init_t( this, name )
! argument list
class(t), intent(inout) :: this
character(len=*), intent(in) :: name
call this%clean()
allocate( this%m_s, source=name )
end subroutine
end module
C:\Temp>gfortran -c -Wall -std=f2008ts m.f90
C:\Temp>type p.f90
program p
use m, only : t
implicit none
type(t) :: foo
call foo%init( name="123" )
foo = t( name="foo" )
call foo%clean()
stop
end program
C:\Temp>gfortran -c -Wall -std=f2008ts p.f90
C:\Temp>gfortran m.o p.o -o p.exe
C:\Temp>p.exe
C:\Temp>"C:\Program Files (x86)\Dr. Memory\bin\drmemory.exe" -- p.exe
-show_reachable
~~Dr.M~~ Dr. Memory version 1.11.0
~~Dr.M~~ (Uninitialized read checking is not yet supported for 64-bit)
~~Dr.M~~ Running "p.exe -show_reachable"
~~Dr.M~~
~~Dr.M~~ Error #1: LEAK 3 direct bytes 0x0000000003101da0-0x0000000003101da3 +
0
indirect bytes
~~Dr.M~~ # 0 replace_malloc
[d:\drmemory_package\common\allo
c_replace.c:2576]
~~Dr.M~~ # 1 insert
[../../../gcc-8-20180204-mingw/l
ibgfortran/io/unit.c:206]
~~Dr.M~~ # 2 _gfortrani_fbuf_init
[../../../gcc-8-20180204-mingw/l
ibgfortran/io/fbuf.c:42]
~~Dr.M~~ # 3 __m_MOD_init_t
~~Dr.M~~ # 4 MAIN__
~~Dr.M~~ # 5 main
~~Dr.M~~
~~Dr.M~~ ERRORS FOUND:
~~Dr.M~~ 0 unique, 0 total unaddressable access(es)
~~Dr.M~~ 0 unique, 0 total invalid heap argument(s)
~~Dr.M~~ 0 unique, 0 total GDI usage error(s)
~~Dr.M~~ 0 unique, 0 total handle leak(s)
~~Dr.M~~ 0 unique, 0 total warning(s)
~~Dr.M~~ 1 unique, 1 total, 3 byte(s) of leak(s)
~~Dr.M~~ 0 unique, 0 total, 0 byte(s) of possible leak(s)
~~Dr.M~~ ERRORS IGNORED:
~~Dr.M~~ 2 potential error(s) (suspected false positives)
~~Dr.M~~ (details: C:\Users\parekhv\AppData\Roaming\Dr.
Memory\DrMemory
-p.exe.14260.000\potential_errors.txt)
~~Dr.M~~ 3 unique, 4 total, 246 byte(s) of still-reachable
allocati
on(s)
~~Dr.M~~ (re-run with "-show_reachable" for details)
~~Dr.M~~ Details: C:\Users\parekhv\AppData\Roaming\Dr.
Memory\DrMemory-p.exe.142
60.000\results.txt
C:\Temp>
--- end console output ---
Per section '4.5.6.3 When finalization occurs' of document 10-007r1 toward
Fortran 2008 standard, for an instruction such as 'foo = t( name="foo" )' in
the program shown above, one can expect finalization to occur for object foo
before it gets redefined and also for the entity created by the function with
generic interface t. Thus the expected program output is:
finalizer invoked for object 123
finalizer invoked for object foo
In addition, I would expect the program to not leak any memory, but as shown
above there is a leak of 3 bytes which may correspond to the above-mentioned
missing finalization for the initial object foo.
Thank you for your time and attention.
Best Regards,
>From gcc-bugs-return-594114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:14:21 2018
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/69602] [6/7/8 Regression] over-ambitious logical-op warning on EAGAIN vs EWOULDBLOCK
Date: Mon, 19 Feb 2018 21:20:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at redhat dot com
Target Milestone|7.4 |9.0
--- Comment #22 from Jeffrey A. Law <law at redhat dot com> ---
With no real design/implementation in sight, this is being taken off the table
for gcc-8.
>From gcc-bugs-return-594115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:20:26 2018
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/84473] New: FAIL: libgomp.c++/member-5.C execution test
Date: Mon, 19 Feb 2018 21:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84473
Bug ID: 84473
Summary: FAIL: libgomp.c++/member-5.C execution test
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
CC: jakub 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/ -x c++ ../../../../gcc/libgomp/testsuite/libgomp.c++/member-5.C
-B/home
/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/
-B/home/dave/gnu/gcc/objdir/hppa-
linux-gnu/./libgomp/.libs -I/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp
-
I../../../../gcc/libgomp/testsuite/../../include
-I../../../../gcc/libgomp/tests
uite/.. -fmessage-length=0 -fno-diagnostics-show-caret -Wno-hsa
-fdiagnostics-co
lor=never -fopenmp -nostdinc++
-I/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstd
c++-v3/include/hppa-linux-gnu
-I/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/include
-I/home/dave/gnu/gcc/gcc/libstdc++-v3/libsupc++
-I/home/dave/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/home/dave/gnu/gcc/gcc/libstdc++-v3/testsuite/util -O2
-B/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/../libstdc++-v3/src/.libs
-L/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/.libs
-L/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/../libstdc++-v3/src/.libs
-lstdc++ -lm -o ./member-5.exe
PASS: libgomp.c++/member-5.C (test for excess errors)
Setting LD_LIBRARY_PATH to
.:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/.libs:/home/dave/gnu/gcc/objdir/gcc:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/../libstdc++-v3/src/.libs:.:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/.libs:/home/dave/gnu/gcc/objdir/gcc:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/./libgomp/../libstdc++-v3/src/.libs:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/src/.libs:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libssp/.libs:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libgomp/.libs:/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libatomic/.libs:/home/dave/gnu/gcc/objdir/./gcc:/home/dave/gnu/gcc/objdir/./prev-gcc
Execution timeout is: 300
spawn [open ...]
FAIL: libgomp.c++/member-5.C execution test
dave@atlas:~/gnu/gcc/objdir/hppa-linux-gnu/libgomp/testsuite$ gdb member-5.exe
GNU gdb (Debian 7.12-6+b1) 7.12.0.20161007-git
Copyright (C) 2016 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. Type "show copying"
and "show warranty" for details.
This GDB was configured as "hppa-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from member-5.exe...done.
(gdb) r
Starting program:
/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libgomp/testsuite/member-5.exe
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/hppa-linux-gnu/libthread_db.so.1".
[New Thread 0xf77b8440 (LWP 17682)]
[New Thread 0xf6fb7440 (LWP 17683)]
[New Thread 0xf67b6440 (LWP 17684)]
Thread 1 "member-5.exe" received signal SIGFPE, Arithmetic exception.
$$remoI () at ../../../gcc/libgcc/config/pa/milli64.S:785
785 addit,= 0,arg1,0 /* trap if div by zero
*/
(gdb) bt
#0 $$remoI () at ../../../gcc/libgcc/config/pa/milli64.S:785
#1 0x00010b2c in A::m1 ()
at ../../../../gcc/libgomp/testsuite/libgomp.c++/member-5.C:45
#2 0xf81fb560 in GOMP_taskloop (
fn=@0x182a2: 0x10b00 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)>,
data=<optimized out>, cpyfn=<optimized out>, arg_size=<optimized out>,
arg_align=<optimized out>, flags=<optimized out>, num_tasks=1,
priority=<optimized out>, start=32, end=<optimized out>,
step=<optimized out>) at ../../../gcc/libgomp/taskloop.c:200
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) p/x $r25
$1 = 0x0
(gdb) frame 1
#1 0x00010b2c in A::m1 ()
at ../../../../gcc/libgomp/testsuite/libgomp.c++/member-5.C:45
45 template <typename T> I<T>::I (const I &x) : p (x.p) {}
(gdb) disass $pc-32,$pc+16
Dump of assembler code from 0x10b0c to 0x10b3c:
0x00010b0c <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+12>: stw,ma r4,40(sp)
0x00010b10 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+16>: stw r3,-3c(sp)
0x00010b14 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+20>: ldw 20(r26),r24
0x00010b18 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+24>: copy r24,r25
0x00010b1c <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+28>: ldw 0(r26),r21
0x00010b20 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+32>: copy r21,r26
0x00010b24 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+36>: b,l 0x12ab0
<$$remoI>,r31
0x00010b28 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+40>: ldw -c(ret0),rp
=> 0x00010b2c <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+44>: ldw -4(ret0),r23
0x00010b30 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+48>: ldw -8(ret0),r22
0x00010b34 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+52>: addil L%0,dp,r1
0x00010b38 <_ZN1A2m1ERK1IIiES3_._omp_fn.5(void)+56>: ldw c(ret0),r3
End of assembler dump.
>From gcc-bugs-return-594116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:37:40 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/84466] [8 regression] libgomp.graphite/force-parallel-8.c fails starting with r257723
Date: Mon, 19 Feb 2018 21:46:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
CC| |danglin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Also seen on hppa-unknown-linux-gnu. Only 3 loops carried no dependency.
>From gcc-bugs-return-594117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:46:38 2018
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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/84468] [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
Date: Mon, 19 Feb 2018 21:53:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-02-19
CC| |msebor at gcc dot gnu.org
Component|c++ |tree-optimization
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=84470
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning is designed to look at the next statement just after a call to
strncpy() and if it's an assignment to the destination it does not trigger.
Unfortunately, due to a limitation/missing feature in the optimizer (bug
84470), in the test case in comment #0, the 'if (iCString)' test prevents the
warning from seeing that the next statement is an assignment.
As you already noted, making the assignment to _cstring[3] in A::setCString()
also conditional on iCString being nonnull avoids the warning. This will
become unnecessary once the missing optimization mentioned in bug 84470 is
implemented. I can confirm that the warning is a false positive in this case.
Let me see if there's a way to enhance the warning to handle it until the
optimization is implemented.
(In reply to Sérgio Basto from comment #1)
> btw and this warning [1] make sense ?
>
> [1]
> mongoose.c: In function 'mg_resolve_async_opt':
> mongoose.c:10791:3: error: 'strncpy' specified bound 1024 equals destination
> size [-Werror=stringop-truncation]
> strncpy(req->name, name, sizeof(req->name));
It's a common mistake to assume that strncpy() nul-terminates the copy even
when it's called with the size of the destination as the last argument and a
source at least as long. The warning is meant to detect cases when this
assumption may be unsafe. It tries to avoid triggering for provably safe code
(by looking for the subsequent assignment, or by tracking string lengths when
it can) but the logic isn't perfect so it's best to call the function with a
byte count that's less than the destination size and follow the call
immediately by an assignment of the nul to the destination.
>From gcc-bugs-return-594118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:53:23 2018
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Subject: [Bug tree-optimization/83965] [8 Regression] ICE in vectorize_fold_left_reduction, at tree-vect-loop.c:6154
Date: Mon, 19 Feb 2018 21:58:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Testing a patch.
>From gcc-bugs-return-594119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 19 21:58:43 2018
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Subject: [Bug target/84146] ICE with -mcet in dwarf2out_var_location, involving sigsetjmp
Date: Mon, 19 Feb 2018 22:01:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 19 21:58:04 2018
New Revision: 257826
URL: https://gcc.gnu.org/viewcvs?rev=257826&root=gcc&view=rev
Log:
PR target/84146
* reg-notes.def (REG_CALL_ARG_LOCATION): New reg note.
* insn-notes.def (NOTE_INSN_CALL_ARG_LOCATION): Remove.
* var-tracking.c (emit_note_insn_var_location): Remove all references
to NOTE_INSN_CALL_ARG_LOCATION.
(emit_notes_in_bb): Emit arguments as REG_CALL_ARG_LOCATION note on
the CALL_INSN rather than separate NOTE_INSN_CALL_ARG_LOCATION note.
Use copy_rtx_if_shared.
* dwarf2out.c (gen_subprogram_die): Use XEXP with 0 instead of
NOTE_VAR_LOCATION on ca_loc->call_arg_loc_note.
(dwarf2out_var_location): Remove handling of
NOTE_INSN_CALL_ARG_LOCATION, instead handle REG_CALL_ARG_LOCATION note
on call_insn.
* final.c (final_scan_insn): Remove all references to
NOTE_INSN_CALL_ARG_LOCATION.
(rest_of_clean_state): Likewise. Remove REG_CALL_ARG_LOCATION notes
before dumping final insns.
* except.c (emit_note_eh_region_end): Remove all references to
NOTE_INSN_CALL_ARG_LOCATION.
* config/alpha/alpha.c (alpha_pad_function_end): Likewise.
* config/c6x/c6x.c (c6x_gen_bundles): Likewise.
* config/arc/arc.c (hwloop_optimize): Likewise.
* config/arm/arm.c (create_fix_barrier): Likewise.
* config/s390/s390.c (s390_chunkify_start): Likewise.
* config/sh/sh.c (find_barrier): Likewise.
* config/i386/i386.c (rest_of_insert_endbranch,
ix86_seh_fixup_eh_fallthru): Likewise.
* config/xtensa/xtensa.c (hwloop_optimize): Likewise.
* config/iq2000/iq2000.c (final_prescan_insn): Likewise.
* config/frv/frv.c (frv_function_prologue): Likewise.
* emit-rtl.c (try_split): Likewise. Copy over REG_CALL_ARG_LOCATION
reg note.
(note_outside_basic_block_p): Remove all references to
NOTE_INSN_CALL_ARG_LOCATION.
* gengtype.c (adjust_field_rtx_def): Likewise.
* print-rtl.c (rtx_writer::print_rtx_operand_code_0, print_insn):
Likewise.
* jump.c (cleanup_barriers, delete_related_insns): Likewise.
* cfgrtl.c (force_nonfallthru_and_redirect): Likewise.
* gcc.target/i386/pr84146.c: Add -fcompare-debug to dg-options.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgrtl.c
trunk/gcc/config/alpha/alpha.c
trunk/gcc/config/arc/arc.c
trunk/gcc/config/arm/arm.c
trunk/gcc/config/c6x/c6x.c
trunk/gcc/config/frv/frv.c
trunk/gcc/config/i386/i386.c
trunk/gcc/config/iq2000/iq2000.c
trunk/gcc/config/s390/s390.c
trunk/gcc/config/sh/sh.c
trunk/gcc/config/xtensa/xtensa.c
trunk/gcc/dwarf2out.c
trunk/gcc/emit-rtl.c
trunk/gcc/except.c
trunk/gcc/final.c
trunk/gcc/gengtype.c
trunk/gcc/insn-notes.def
trunk/gcc/jump.c
trunk/gcc/print-rtl.c
trunk/gcc/reg-notes.def
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/pr84146.c
trunk/gcc/var-tracking.c
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Subject: [Bug tree-optimization/84468] [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
Date: Mon, 19 Feb 2018 22:01:00 -0000
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--- Comment #3 from Romain Geissler <romain.geissler at amadeus dot com> ---
Ok there maybe a problem with the optimizer as you describe it in bug 84470.
However why does variant 3 from comment #0 yields a warning too ?
if (iCString)
{
strncpy(_cstring, iCString, 3);
_cstring[3] = '\0';
}
_cstring[3] = '\0';
It is because the optimizer finds out that "_cstring[3] = '\0';" is both in the
"if branch" and also after, thus eliminates the one from the "if branch", then
the strncpy silencing warning mechanism doesn't work properly anymore ? I don't
know very well what is the internal gcc IR, but do you think it would be
possible to go beyond branches and basic block separation to find out that the
next statement in
if (iCString)
{
strncpy(_cstring, iCString, 3);
}
_cstring[3] = '\0';
really is "_cstring[3] = '\0';" (ie crossing basic block boundaries) ?
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Subject: [Bug tree-optimization/84470] test for address of member being null not eliminated
Date: Mon, 19 Feb 2018 22:06:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=21474
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Whoops, struct B should have a member before the array:
struct B
{
char c, a[4];
};
void b (struct B *p)
{
if (p->a == 0) // can never be true
__builtin_abort (); // can be eliminated (as Clang does)
}
Clang does warn for both tests but eliminates only the one in test case above.
This might actually be a duplicate of bug 21474.
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Subject: [Bug tree-optimization/84468] [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, the conditional assignment is eliminated in favor of the one in the next
basic block. Considering the first statement in the next basic block (rather
than just the current one) is also the solution I'm looking into.
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Subject: [Bug fortran/83344] Use of uninitialized memory with ASSOCIATE and strings
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--- Comment #12 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Mon Feb 19 22:09:13 2018
New Revision: 257827
URL: https://gcc.gnu.org/viewcvs?rev=257827&root=gcc&view=rev
Log:
2018-02-19 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83344
PR fortran/83975
* resolve.c (resolve_assoc_var): Rearrange the logic for the
determination of the character length of associate names. If
the associate name is missing a length expression or the length
expression is not a constant and the target is not a variable,
make the associate name allocatable and deferred length.
* trans-decl.c (gfc_get_symbol_decl): Null the character length
backend_decl for deferred length associate names that are not
variables. Set 'length' to gfc_index_zero_node for character
associate names, whose character length is a PARM_DECL.
2018-02-19 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83344
PR fortran/83975
* gfortran.dg/associate_22.f90: Enable commented out test.
* gfortran.dg/associate_36.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/associate_36.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/associate_22.f90
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Subject: [Bug fortran/83975] [8 Regression] ICE in set_parm_default_def_partition, at tree-ssa-coalesce.c:1919
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Mon Feb 19 22:09:13 2018
New Revision: 257827
URL: https://gcc.gnu.org/viewcvs?rev=257827&root=gcc&view=rev
Log:
2018-02-19 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83344
PR fortran/83975
* resolve.c (resolve_assoc_var): Rearrange the logic for the
determination of the character length of associate names. If
the associate name is missing a length expression or the length
expression is not a constant and the target is not a variable,
make the associate name allocatable and deferred length.
* trans-decl.c (gfc_get_symbol_decl): Null the character length
backend_decl for deferred length associate names that are not
variables. Set 'length' to gfc_index_zero_node for character
associate names, whose character length is a PARM_DECL.
2018-02-19 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83344
PR fortran/83975
* gfortran.dg/associate_22.f90: Enable commented out test.
* gfortran.dg/associate_36.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/associate_36.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/associate_22.f90
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Subject: [Bug tree-optimization/84468] [gcc 8] Inconsistent -Wstringop-truncation warnings with -O2
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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Subject: [Bug ipa/57218] [6/7/8 Regression] Excessive inlining even at -Os
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-594127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 01:10:25 2018
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From: "romain.geissler at amadeus dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/83955] false positive implicit-fallthrough warning on switch enum
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Romain Geissler <romain.geissler at amadeus dot com> changed:
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--- Comment #3 from Romain Geissler <romain.geissler at amadeus dot com> ---
Hi,
I am hitting this too when migrating some code base to gcc 8. Given that it is
relatively easy to workaround (at least in C++ by adding a [[fallthrough]];
statement) and that it is "just" a warning, I guess it gets quite low priority.
Do you know if we can expect this one to be fixed before gcc 8 release ?
Cheers,
Romain
>From gcc-bugs-return-594128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 01:39:38 2018
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From: "romain.geissler at amadeus dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/84474] New: Unexpected -Wstringop-truncation
Date: Tue, 20 Feb 2018 02:51:00 -0000
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Bug ID: 84474
Summary: Unexpected -Wstringop-truncation
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
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Hi,
When migrating some code base to gcc 8, I am hitting an issue on this snippet:
<<EOF
#include <string.h>
void f()
{
char aBuf[3 + 1];
strncpy(aBuf, "123", 3);
aBuf[3] = '\0';
}
EOF
compiled with: -Wall -Werror -Wextra -std=gnu++17
I get:
error: ‘char* strncpy(char*, const char*, size_t)’ output truncated before
terminating nul copying 3 bytes from a string of the same length
[-Werror=stringop-truncation]
Here there is really nothing wrong in using strncpy. You might argue that here
using strncpy is useless, while memcpy would simply do the trick. This is true,
but this was extracted from a bigger code base where using strncpy actually
makes sense ("123" is not hardcoded but is a user provided pointer, that gcc is
clever enough to inline with -O2, thus hitting the very same error).
Cheers,
Romain
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Subject: [Bug tree-optimization/84468] [8 Regression] bogus -Wstringop-truncation despite assignment after conditional strncpy
Date: Tue, 20 Feb 2018 03:05:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Summary|[gcc 8] Inconsistent |[8 Regression] bogus
|-Wstringop-truncation |-Wstringop-truncation
|warnings with -O2 |despite assignment after
| |conditional strncpy
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-02/msg01141.html
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Subject: [Bug tree-optimization/84474] Unexpected -Wstringop-truncation on strncpy with string literal
Date: Tue, 20 Feb 2018 03:21:00 -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
Resolution|--- |WONTFIX
Summary|Unexpected |Unexpected
|-Wstringop-truncation |-Wstringop-truncation on
| |strncpy with string literal
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is among the unavoidable cases I was referring to in bug 84468. The
strcpy call with constant arguments is folded into memcpy too early to see the
subsequent assignment of the NUL. I argued to defer this early folding because
it tends to defeat downstream optimizations but I lost.
I would make the argument (and have) that in the test case, strncpy is being
misused and strcpy (or other string functions if strcpy is not acceptable)
would be more appropriate.
If you have a test case with the inlining please open a new bug. It may not
get fixed for GCC 8 but it might serve as an argument for deferring folding
these calls until more context is available, or for other solutions.
>From gcc-bugs-return-594131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 03:21:13 2018
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Subject: [Bug middle-end/68733] [6/7/8 Regression] FAIL: libgomp.c/target-29.c (internal compiler error)
Date: Tue, 20 Feb 2018 03:35:00 -0000
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--- Comment #17 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to dave.anglin from comment #16)
> The change is installed and it's now the default on hppa-linux. This is
> an ABI change
> and I don't plan to change the default on 32-bit hpux.
so... can this bug be closed then?
>From gcc-bugs-return-594132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 03:35:05 2018
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Subject: [Bug c++/61491] An explicit specialization of a member enumeration of a class template is rejected
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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 #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Paolo Carlini from comment #4)
> Resolving this requires some additional work beyond what I did back in 2015.
> See:
>
> https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00781.html
Adding the "patch" keyword for the simpler approach anyways, even if it'd
require more work beyond that
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Subject: [Bug c++/84429] [8 Regression] ICE capturing variable-sized array
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Feb 20 03:39:37 2018
New Revision: 257836
URL: https://gcc.gnu.org/viewcvs?rev=257836&root=gcc&view=rev
Log:
PR c++/84429 - ICE capturing VLA.
* lambda.c (build_capture_proxy): Handle reference refs.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-vla1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
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Subject: [Bug c++/84429] [8 Regression] ICE capturing variable-sized array
Date: Tue, 20 Feb 2018 04:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84429
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-594135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 04:06:17 2018
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/82007] DTIO write format stored in a string leads to severe errors
Date: Tue, 20 Feb 2018 04:07:00 -0000
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--- Comment #10 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Tue Feb 20 04:05:38 2018
New Revision: 257837
URL: https://gcc.gnu.org/viewcvs?rev=257837&root=gcc&view=rev
Log:
2018-02-19 Jerry DeLisle <jvdelisle@gcc.gnu.org>
Backport from trunk
PR fortran/82007
* resolve.c (resolve_transfer): Delete code looking for 'DT'
format specifiers in format strings. Set formatted to true if a
format string or format label is present.
* trans-io.c (get_dtio_proc): Likewise. (transfer_expr): Fix
whitespace.
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-io.c
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Subject: [Bug fortran/82007] DTIO write format stored in a string leads to severe errors
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Fixed on 7 and closing.
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Subject: [Bug libstdc++/66742] abort on sorting list with custom allocator that is not stateless
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
CC| |egallager at gcc dot gnu.org
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> A candidate patch has been posted to
> https://gcc.gnu.org/ml/gcc-patches/2015-07/msg00217.html
>
> With that fix your testcase segfaults, because you allocate n bytes not
> n*sizeof(Tp).
adding "patch" keyword
>From gcc-bugs-return-594138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 06:13:55 2018
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Subject: [Bug c/84475] New: pthread doesn't define _REENTRANT in preprocessor on riscv-linux
Date: Tue, 20 Feb 2018 06:54:00 -0000
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Bug ID: 84475
Summary: pthread doesn't define _REENTRANT in preprocessor on
riscv-linux
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The newly introduced platform, riscv, doesn't have _REENTRANT defined when
-pthread is appended.
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Subject: [Bug target/18206] -dynamic-linker option seems to be badly named and broken
Date: Tue, 20 Feb 2018 07:00:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
Summary|-dynamic-linker option |-dynamic-linker option
|seems to be badly named, |seems to be badly named and
|broken and undocumented |broken
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to sandra from comment #2)
>
> Anyway, there is no documentation bug here.
OK, removing that part from the title
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Subject: [Bug c/70186] RFE: better handling of misspelled attributes
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
CC| |egallager at gcc dot gnu.org
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #2)
> Candidate patch posted here:
> https://gcc.gnu.org/ml/gcc-patches/2016-12/msg01610.html
Adding "patch" keyword
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From: "ixsci at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84476] New: [[nodiscard]] ignored on virtual functions accessed through pointer
Date: Tue, 20 Feb 2018 07:19:00 -0000
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Bug ID: 84476
Summary: [[nodiscard]] ignored on virtual functions accessed
through pointer
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ixsci at yandex dot ru
Target Milestone: ---
Given: A class with a virtual function which result should not be discarded and
a pointer to that class.
Expected: Access to such a function w/o using its result should generate a
warning.
Actual result: no warning produced.
Code with comments where the warning is missing:
#include <memory>
using namespace std;
class A
{
public:
[[nodiscard]] virtual int getVal()
{
return 0;
}
[[nodiscard]] int getVal2()
{
return 0;
}
};
int main()
{
auto a = make_unique<A>();
// No warning
a->getVal();
// Warning
a->getVal2();
A aa;
// Warning
aa.getVal();
// Warning
aa.getVal2();
A* aaa = new A{};
// No warning
aaa->getVal();
// Warning
aaa->getVal2();
delete aaa;
};
Tested on Wandbox (gcc HEAD 8.0.1)
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Subject: [Bug libgcc/67336] Verify pointers during stack unwind
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |egallager at gcc dot gnu.org
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Yuri Gribov from comment #4)
> Posted RFC in https://gcc.gnu.org/ml/gcc-patches/2017-01/msg00793.html
adding "patch" keyword
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Subject: [Bug c++/84449] [7/8 Regression] ICE with constexpr and deleted destructor
Date: Tue, 20 Feb 2018 08:22:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 20 08:21:36 2018
New Revision: 257839
URL: https://gcc.gnu.org/viewcvs?rev=257839&root=gcc&view=rev
Log:
PR c++/84449
* tree.c (bot_manip): If build_cplus_new or break_out_target_exprs
returns error_mark_node, return it immediately.
(break_out_target_exprs): If cp_walk_tree with bot_manip returns
error_mark_node, return error_mark_node.
* g++.dg/cpp0x/constexpr-84449.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-84449.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/tree.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84455] [8 Regression] ICE in build_call_a at gcc/cp/call.c:389 during error reporting
Date: Tue, 20 Feb 2018 08:22:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 20 08:20:37 2018
New Revision: 257838
URL: https://gcc.gnu.org/viewcvs?rev=257838&root=gcc&view=rev
Log:
PR c++/84455
* pt.c (tsubst_lambda_expr): If not nested, increment temporarily
function_depth to avoid GC during finish_lambda_function.
* g++.dg/cpp0x/lambda/lambda-ice26.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice26.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug testsuite/80551] c-c++-common/tsan/race_on_mutex.c fails on powerpc
Date: Tue, 20 Feb 2018 08:23:00 -0000
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--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #9)
> Nothing, it never reaches memset before it exits.
Are you sure? I was able to place breakpoint on memset and ~14th iteration of
the breakpoint was really mutex init function. Can you please double check it?
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Subject: [Bug target/28689] Cross compile internal error.
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Lee Adamson from comment #6)
> Same thing also happens if I build a sparc-sun-solaris2.8 to
> i686-pc-linux-gnu cross compiler.
Does it still happen with newer versions of gcc?
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Subject: [Bug c++/84445] [7/8 Regression] ICE with __builtin_launder and virtual function
Date: Tue, 20 Feb 2018 08:57:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 20 08:22:31 2018
New Revision: 257840
URL: https://gcc.gnu.org/viewcvs?rev=257840&root=gcc&view=rev
Log:
PR c++/84445
* class.c (fixed_type_or_null) <case CALL_EXPR>: Only test
TREE_HAS_CONSTRUCTOR if instance is not an internal function call.
* g++.dg/cpp1z/launder7.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/launder7.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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From: "arnd at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/81715] asan-stack=1 redzone allocation is too inflexible
Date: Tue, 20 Feb 2018 08:58:00 -0000
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--- Comment #24 from Arnd Bergmann <arnd at linaro dot org> ---
(In reply to Martin Liška from comment #23)
> That's definitely possible for GCC 9. Question is whether such change will
> be sufficient for you. Do you expect it will reduce stack usage in the
> desired way?
I've recreated my original finding, comparing a clang-5 release against a
recent gcc-8 snapshot. Building an x86 allmodconfig kernel with clang, I get 78
-fsanitize-address-use-after-scope warnings against a 2048 byte limit, the
largest ones are:
drivers/usb/misc/sisusbvga/sisusb.c:1880:12: warning: stack frame size of 6776
bytes in function 'sisusb_init_gfxcore' [-Wframe-larger-than=]
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.c:1521:1: warning: stack frame
size of 5176 bytes in function 'gk104_ram_new_' [-Wframe-larger-than=]
drivers/usb/misc/sisusbvga/sisusb.c:1750:12: warning: stack frame size of 5112
bytes in function 'sisusb_set_default_mode' [-Wframe-larger-than=]
drivers/net/wireless/atmel/atmel.c:1307:5: warning: stack frame size of 5016
bytes in function 'atmel_open' [-Wframe-larger-than=]
net/core/ethtool.c:2549:5: warning: stack frame size of 4568 bytes in function
'dev_ethtool' [-Wframe-larger-than=]
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c:19216:6: warning:
stack frame size of 4312 bytes in function 'wlc_phy_init_nphy'
[-Wframe-larger-than=]
drivers/media/usb/em28xx/em28xx-dvb.c:1129:12: warning: stack frame size of
3992 bytes in function 'em28xx_dvb_init' [-Wframe-larger-than=]
drivers/staging/media/atomisp/pci/atomisp2/css2400/sh_css.c:6802:24: warning:
stack frame size of 3960 bytes in function 'load_capture_binaries'
[-Wframe-larger-than=]
drivers/staging/wlan-ng/cfg80211.c:454:12: warning: stack frame size of 3864
bytes in function 'prism2_connect' [-Wframe-larger-than=]
drivers/staging/wilc1000/host_interface.c:2480:13: warning: stack frame size of
3704 bytes in function 'host_if_work' [-Wframe-larger-than=]
With gcc-8, the same configuration has 179 warnings, including:
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:5650:1: warning: the frame size
of 23632 bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:4515:1: warning: the frame size
of 14056 bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:3879:1: warning: the frame size
of 11504 bytes is larger than 2048 bytes [-Wframe-larger-than=]
lib/atomic64_test.c:250:1: warning: the frame size of 11192 bytes is larger
than 2048 bytes [-Wframe-larger-than=]
lib/atomic64_test.c:148:1: warning: the frame size of 10360 bytes is larger
than 2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt73usb.c:1294:1: warning: the frame size of
8680 bytes is larger than 2048 bytes [-Wframe-larger-than=]
fs/fscache/stats.c:287:1: warning: the frame size of 6536 bytes is larger than
2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:8655:1: warning: the frame size
of 6456 bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/media/dvb-frontends/stv090x.c:3090:1: warning: the frame size of 5872
bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt61pci.c:1647:1: warning: the frame size of
5792 bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/media/dvb-frontends/stv090x.c:1595:1: warning: the frame size of 5304
bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/scsi/fnic/fnic_trace.c:451:1: warning: the frame size of 5000 bytes is
larger than 2048 bytes [-Wframe-larger-than=]
drivers/net/wireless/ralink/rt2x00/rt2800lib.c:2417:1: warning: the frame size
of 4912 bytes is larger than 2048 bytes [-Wframe-larger-than=]
drivers/media/dvb-frontends/stv090x.c:4265:1: warning: the frame size of 4840
bytes is larger than 2048 bytes [-Wframe-larger-than=]
Comparing against a 3072 byte limit, I get 18 warnings for clang vs 54 for
gcc-8. The detailed analysis of some of those warnings last year had shown that
the difference can be traced almost entirely to simple scalar variables that
use 64 bytes redzone with gcc but only 16 bytes with clang.
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Subject: [Bug target/28689] Cross compile internal error.
Date: Tue, 20 Feb 2018 09:02:00 -0000
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--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
Created attachment 43465
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43465&action=edit
output from compiling testcase
(In reply to Eric Gallager from comment #7)
> (In reply to Lee Adamson from comment #6)
> > Same thing also happens if I build a sparc-sun-solaris2.8 to
> > i686-pc-linux-gnu cross compiler.
>
> Does it still happen with newer versions of gcc?
(I got the attached output compiling native for darwin, btw. Errors, but no
ICE)
>From gcc-bugs-return-594149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 20 08:58:09 2018
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2014-08-22 18:34 [Bug testsuite/62234] New: warnings/errors from LTO cannot be tested manu at gcc dot gnu.org
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