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* [Bug go/84948] [8 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
@ 2018-03-26 12:14 ` jakub at gcc dot gnu.org
2021-05-14 9:50 ` [Bug go/84948] [9/10/11/12 " jakub at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2018-03-26 12:14 UTC (permalink / raw)
To: gcc-bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
CC| |jakub at gcc dot gnu.org
>From gcc-bugs-return-599243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:25:18 2018
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85077] V[248][SD]F abs not optimized to
Date: Mon, 26 Mar 2018 12:25:00 -0000
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--- Comment #3 from Matthias Kretz <kretz at kde dot org> ---
Ouch, right I didn't think of non-finite values.
I.e. -0 < 0 is false...
However, this is what I wanted:
abs(-inf) -> inf
abs( inf) -> inf
abs( nan) -> nan
abs( -0) -> 0
abs( 0) -> 0
The sign bit manipulation works for all of them. The ternary fails only on the
-0 input, no?
I'm working on an implementation of wg21.link/p0214r9 that I'd like to
contribute to libstdc++, which is why I'm currently looking to remove
workarounds and enable the compiler to do const-prop as much as possible.
I'd be happy to go with an implementation that uses my_abs if that's the way to
go (I guess it is).
FWIW, ICC translates `x < 0 ? -x : x` (on float itself) to sign masking. (But
then again ICC doesn't conform with default flags either)
>From gcc-bugs-return-599244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:33:34 2018
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85077] V[248][SD]F abs not optimized to
Date: Mon, 26 Mar 2018 12:33:00 -0000
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--- Comment #4 from Matthias Kretz <kretz at kde dot org> ---
Oh, there seems to be a regression in GCC 8. In 7 it works as you say. In 8 I
can't get the andps to show up
>From gcc-bugs-return-599245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:43:54 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/85030] [6/7 Regression] internal compiler error: Floating point exception (validate_subreg())
Date: Mon, 26 Mar 2018 12:43:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] internal |[6/7 Regression] internal
|compiler error: Floating |compiler error: Floating
|point exception |point exception
|(validate_subreg()) |(validate_subreg())
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-599246-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:46:12 2018
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Subject: [Bug lto/81968] [8 regression] early lto debug objects make Solaris ld SEGV
Date: Mon, 26 Mar 2018 12:46:00 -0000
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--- Comment #66 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #63)
> --- gcc/dwarf2out.c 2018-03-11 17:48:53.498068316 +0100
> +++ gcc/dwarf2out.c 2018-03-13 10:58:03.477514623 +0100
> @@ -28282,6 +28282,7 @@ output_macinfo (const char *debug_line_l
> case DW_MACINFO_undef:
> if ((!dwarf_strict || dwarf_version >= 5)
> && HAVE_COMDAT_GROUP
> + && !flag_lto
> && vec_safe_length (files) != 1
> && i > 0
> && i + 1 < length
> help? If yes, we could go for && (!flag_lto || !HAVE_BROKEN_LD_WHATEVER)
> and add configure test for that.
Rainer, does the above patch fix your remaining issues or are other sections
involved too?
>From gcc-bugs-return-599247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:49:46 2018
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Subject: [Bug target/81084] [8 Regression] powerpcspe port full of confusing configury / command-line options not related to SPE
Date: Mon, 26 Mar 2018 12:49:00 -0000
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Andrew, a friendly ping on this. The #c13 patch looks like a good progress,
what happened to it?
>From gcc-bugs-return-599248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 12:58:39 2018
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Subject: [Bug c/78568] [6/7/8/9 Regression] Wtype-limits warning regression
Date: Mon, 26 Mar 2018 12:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |deferred
Target Milestone|6.5 |9.0
Summary|[6/7/8 Regression] |[6/7/8/9 Regression]
|Wtype-limits warning |Wtype-limits warning
|regression |regression
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Deferred for GCC9+, as we don't want to introduce new warnings to GCC8 at this
point.
>From gcc-bugs-return-599249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 13:09:48 2018
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Subject: [Bug other/31852] Missing __builtin_memchr
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Mar 26 13:09:10 2018
New Revision: 258854
URL: https://gcc.gnu.org/viewcvs?rev=258854&root=gcc&view=rev
Log:
Add workaround to std::variant for Clang bug 31852
* include/std/variant (__get): Qualify calls to avoid ADL.
(__select_index): Adjust whitespace.
(variant): Add using-declaration to workaround Clang bug.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/variant
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Mon, 26 Mar 2018 13:23:00 -0000
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--- Comment #8 from Matthias Kretz <kretz at kde dot org> ---
There seems to be a similar bug for vpsrlw and vpsllw. Do you need a testcase?
(It's hard to hit the bug... just had one occur on a Travis CI build)
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Subject: [Bug c++/85077] [8 Regression] V[248][SD]F abs not optimized to
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|WAITING |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |8.0
Summary|V[248][SD]F abs not |[8 Regression] V[248][SD]F
|optimized to |abs not optimized to
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This regressed with r248124, before that change the FE would fold the two
functions to ABS_EXPR <x> but now it emits VEC_COND_EXPR < x < {0.0, 0.0, 0.0,
0.0} , -NON_LVALUE_EXPR <x> , x > and nothing recognizes that later. I'll have
a look.
>From gcc-bugs-return-599252-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 13:33:35 2018
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Subject: [Bug middle-end/85074] FAIL: g++.dg/torture/pr81812.C (test for excess errors)
Date: Mon, 26 Mar 2018 13:33:00 -0000
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--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
We have default TARGET_USE_LOCAL_THUNK_ALIAS_P and
TARGET_ASM_CAN_OUTPUT_MI_THUNK is default_can_output_mi_thunk_no_vcall().
if (!this_adjusting
|| !targetm.asm_out.can_output_mi_thunk (thunk_fndecl, fixed_offset,
virtual_value, alias))
{
/* If this is a covariant thunk, or we don't have the necessary
code for efficient thunks, generate a thunk function that
just makes a call to the real function. Unfortunately, this
doesn't work for varargs. */
if (varargs_function_p (function))
error ("generic thunk code fails for method %q#D which uses %<...%>",
function);
}
>From gcc-bugs-return-599253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 14:31:48 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85078] New: LTO ICE: tree check: expected tree that contains 'decl minimal' structure, have 'identifier_node' in decl_mangling_context, at cp/mangle.c:878
Date: Mon, 26 Mar 2018 14:31:00 -0000
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Bug ID: 85078
Summary: LTO ICE: tree check: expected tree that contains 'decl
minimal' structure, have 'identifier_node' in
decl_mangling_context, at cp/mangle.c:878
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
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Created attachment 43760
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43760&action=edit
testcase
The attached testcase ICEs with trunk@r258851. 7.3.1 compiles the testcase
without problems.
g++-8 -flto -c -O2 test-LTO-ICE.cpp
during IPA pass: visibility
test-LTO-ICE.cpp:20:8: internal compiler error: tree check: expected tree that
contains 'decl minimal' structure, have 'identifier_node' in
decl_mangling_context, at cp/mangle.c:878
void c (int, const char *, a &);
^
0xa22890 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
../../gcc/tree.c:9494
0x4b05dc contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
../../gcc/tree.h:3249
0x4b05dc decl_mangling_context
../../gcc/cp/mangle.c:878
0x4b05dc write_name
../../gcc/cp/mangle.c:906
0xfd6cea write_class_enum_type
../../gcc/cp/mangle.c:2809
0xfd6cea write_type
../../gcc/cp/mangle.c:2222
0xfd743b write_array_type
../../gcc/cp/mangle.c:3600
0xfd743b write_type
../../gcc/cp/mangle.c:2146
0xfd6ea8 write_type
../../gcc/cp/mangle.c:2255
0xfd7de8 write_method_parms
../../gcc/cp/mangle.c:2796
0xfd2af4 write_bare_function_type
../../gcc/cp/mangle.c:2732
0xfd2af4 write_encoding
../../gcc/cp/mangle.c:847
0xfd220e write_mangled_name
../../gcc/cp/mangle.c:790
0xfd220e mangle_decl_string
../../gcc/cp/mangle.c:3792
0xfd1cd5 get_mangled_id
../../gcc/cp/mangle.c:3814
0xfd1cd5 mangle_decl(tree_node*)
../../gcc/cp/mangle.c:3852
0x1451e5d decl_assembler_name(tree_node*)
../../gcc/tree.c:687
0x10f55e0 symbol_table::insert_to_assembler_name_hash(symtab_node*, bool)
../../gcc/symtab.c:174
0x10f55e0 symtab_node::register_symbol()
../../gcc/symtab.c:386
0x10fd244 cgraph_node::create(tree_node*)
../../gcc/cgraph.c:520
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
>From gcc-bugs-return-599255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 14:38:33 2018
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Subject: [Bug c++/85049] [8 Regression] Internal compiler error with __integer_pack
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/85049] [8 Regression] Internal compiler error with __integer_pack
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Mar 26 14:37:50 2018
New Revision: 258856
URL: https://gcc.gnu.org/viewcvs?rev=258856&root=gcc&view=rev
Log:
PR c++/85049 - ICE with __integer_pack.
* pt.c (unify_pack_expansion): Don't try to deduce generated packs.
* cp-tree.h (TEMPLATE_PARM_P): New.
Added:
trunk/gcc/testsuite/g++.dg/ext/integer-pack3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
>From gcc-bugs-return-599256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 14:42:59 2018
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Subject: [Bug c++/85062] [6/7/8 Regression] ICE on alignas with parameter pack
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 14:51:48 2018
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Matthias Kretz from comment #8)
> There seems to be a similar bug for vpsrlw and vpsllw. Do you need a
> testcase? (It's hard to hit the bug... just had one occur on a Travis CI
> build)
I don't see how that is possible.
Do you have at least objdump with the instructions (e.g. which exact operand it
is), and what gcc options were used?
>From gcc-bugs-return-599258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 14:54:05 2018
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #32 from Andrey Guskov <andrey.y.guskov at intel dot com> ---
Created attachment 43761
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Dump as requested in #c31
Jakub, see the attachment. This is the log of what I get, packed in 7Z.
At a glance, the importatnt part looks quite similar to what Richard has shown.
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--- Comment #33 from Andrey Guskov <andrey.y.guskov at intel dot com> ---
This is the full execution line I used to produce the log in question, and with
which the test continues failing:
$ gfortran -fdump-tree-all -fdump-rtl-all -m64 -c -o sw_absorption.fppized.o
-march=core-avx2 -mfpmath=sse -Ofast -fno-associative-math -funroll-loops -flto
-fopenmp -fconvert=big-endian sw_absorption.fppized.f90
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Mon, 26 Mar 2018 15:09:00 -0000
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--- Comment #10 from Matthias Kretz <kretz at kde dot org> ---
This is all I have right now:
TID 0 SDE-ERROR: Executed instruction not valid for specified chip (KNL):
0x70d281: vpsrlw xmm0, xmm0, xmm16
Image:
/home/travis/build/VcDevel/Vc/build-Experimental/c2dd920concentrateGCC7.2.0Relivy-bridgeknl/tests/mask_knl_vectorbuiltin+0x30d281
(in multi-region image, region# 0)
Function:
_ZN5Tests11load_store_IN2Vc2v29simd_maskIfNS2_6detail7avx_abiILi32EEEEEE3runEv
Instruction bytes are: 62 b1 7d 08 d1 c0
See bottom of: http://lxwww53.gsi.de/testDetails.php?test=2016375&build=14519
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Mon, 26 Mar 2018 15:26:00 -0000
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--- Comment #11 from Matthias Kretz <kretz at kde dot org> ---
Created attachment 43762
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43762&action=edit
test case that produces incorrect vpsrlw
Compiled with `g++-7 -std=c++17 -O0 -fabi-version=0 -fabi-compat-version=0
-march=knl -o fail fail.cpp`
g++-7 (Ubuntu 7.2.0-1ubuntu1~16.04) 7.2.0
from objdump -d | grep vpsrlw I get:
56e364: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
56eaf6: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
56f174: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
56f68c: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
58ef6f: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
58f6f5: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
58fd67: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
590273: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
59585d: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
595fef: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
596664: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
596b6a: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
59cb7a: 62 b1 7d 28 d1 c0 vpsrlw %xmm16,%ymm0,%ymm0
59d39f: 62 b1 7d 28 d1 c1 vpsrlw %xmm17,%ymm0,%ymm0
59d9fe: 62 b1 7d 28 d1 c2 vpsrlw %xmm18,%ymm0,%ymm0
59dfc6: 62 b1 7d 28 d1 c3 vpsrlw %xmm19,%ymm0,%ymm0
5a407c: 62 b1 7d 28 d1 c0 vpsrlw %xmm16,%ymm0,%ymm0
5a4895: 62 b1 7d 28 d1 c1 vpsrlw %xmm17,%ymm0,%ymm0
5a4eeb: 62 b1 7d 28 d1 c2 vpsrlw %xmm18,%ymm0,%ymm0
5a54ad: 62 b1 7d 28 d1 c3 vpsrlw %xmm19,%ymm0,%ymm0
5be392: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
5bea0b: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
5bef85: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
5bf3be: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
5d8ae0: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
5d9149: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
5d96b3: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
5d9adc: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
5de3e7: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
5dea62: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
5defd5: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
5df3fe: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
5e3cd2: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
5e431b: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
5e4865: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
5e4c6e: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
5e94bd: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
5e9b18: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
5ea06b: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
5ea474: 62 b1 7d 08 d1 c3 vpsrlw %xmm19,%xmm0,%xmm0
799710: c5 f9 d1 c5 vpsrlw %xmm5,%xmm0,%xmm0
7999a9: c5 f9 d1 c6 vpsrlw %xmm6,%xmm0,%xmm0
799e3b: c5 f9 d1 c7 vpsrlw %xmm7,%xmm0,%xmm0
79a101: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
79a3c2: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
79a68c: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
7a1e51: c5 f9 d1 c5 vpsrlw %xmm5,%xmm0,%xmm0
7a20ea: c5 f9 d1 c6 vpsrlw %xmm6,%xmm0,%xmm0
7a2579: c5 f9 d1 c7 vpsrlw %xmm7,%xmm0,%xmm0
7a283f: 62 b1 7d 08 d1 c0 vpsrlw %xmm16,%xmm0,%xmm0
7a2b00: 62 b1 7d 08 d1 c1 vpsrlw %xmm17,%xmm0,%xmm0
7a2dca: 62 b1 7d 08 d1 c2 vpsrlw %xmm18,%xmm0,%xmm0
>From gcc-bugs-return-599262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:27:23 2018
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Subject: [Bug libstdc++/84654] libstdc++ tries to use __float128 when compiling with -mno-float128
Date: Mon, 26 Mar 2018 15:27:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fix posted to:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01389.html
>From gcc-bugs-return-599263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:31:04 2018
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From: "afuturepilotis at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85079] New: Segfault While Compiling DXX-Rebirth Project
Date: Mon, 26 Mar 2018 15:31:00 -0000
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Bug ID: 85079
Summary: Segfault While Compiling DXX-Rebirth Project
Product: gcc
Version: 7.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Here is the error report I received:
/usr/bin/i686-w64-mingw32-g++ -v -save-temps -c -g -O2 -ftabstop=4 -Wall
-Werror=extra -Werror=format=2 -Werror=missing-braces
-Werror=missing-include-dirs -Werror=uninitialized -Werror=undef
-Werror=pointer-arith -Werror=cast-qual -Werror=missing-declarations
-Werror=redundant-decls -Werror=vla -funsigned-char -std=gnu++14 -Werror=unused
-Werror=useless-cast -fvisibility=hidden -Wsuggest-attribute=noreturn
-Wlogical-op -Wold-style-cast -Wno-format-truncation -Wno-implicit-fallthrough
-Wno-sign-compare -D_WIN32 -DWIN32_LEAN_AND_MEAN -DPHYSFS_DEPRECATED= -DNDEBUG
-DRELEASE -D_WIN32_WINNT=1536 -Icommon/include -Icommon/main -I.
-I/usr/i686-w64-mingw32/include/libpng16 -I/usr/i686-w64-mingw32/include
-I/usr/i686-w64-mingw32/include/SDL "common/2d/bitblt.cpp" -o
"common/2d/bitblt.o"
Using built-in specs.
COLLECT_GCC=/usr/bin/i686-w64-mingw32-g++
Target: i686-w64-mingw32
Configured with:
/home/shadoww/Projects/aurpkg/mingw-w64/aurpkg/mingw-w64-gcc/src/gcc/configure
--prefix=/usr --libexecdir=/usr/lib --target=i686-w64-mingw32
--enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared
--enable-static --enable-threads=posix --enable-fully-dynamic-string
--enable-libstdcxx-time=yes --with-system-zlib --enable-cloog-backend=isl
--enable-lto --disable-dw2-exceptions --enable-libgomp --disable-multilib
--enable-checking=release : (reconfigured)
/home/shadoww/Projects/aurpkg/mingw-w64/aurpkg/mingw-w64-gcc/src/gcc/configure
--prefix=/usr --libexecdir=/usr/lib --target=i686-w64-mingw32
--enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared
--enable-static --enable-threads=posix --enable-fully-dynamic-string
--enable-libstdcxx-time=yes --with-system-zlib --enable-cloog-backend=isl
--enable-lto --disable-dw2-exceptions --enable-libgomp --disable-multilib
--enable-checking=release
Thread model: posix
gcc version 7.3.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-g' '-O2' '-ftabstop=4' '-Wall'
'-Werror=extra' '-Werror=format=2' '-Werror=missing-braces'
'-Werror=missing-include-dirs' '-Werror=uninitialized' '-Werror=undef'
'-Werror=pointer-arith' '-Werror=cast-qual' '-Werror=missing-declarations'
'-Werror=redundant-decls' '-Werror=vla' '-funsigned-char' '-std=gnu++14'
'-Werror=unused' '-Werror=useless-cast' '-fvisibility=hidden'
'-Wsuggest-attribute=noreturn' '-Wlogical-op' '-Wold-style-cast'
'-Wformat-truncation=0' '-Wimplicit-fallthrough=0' '-Wno-sign-compare' '-D'
'_WIN32' '-D' 'WIN32_LEAN_AND_MEAN' '-D' 'PHYSFS_DEPRECATED=' '-D' 'NDEBUG'
'-D' 'RELEASE' '-D' '_WIN32_WINNT=1536' '-I' 'common/include' '-I'
'common/main' '-I' '.' '-I' '/usr/i686-w64-mingw32/include/libpng16' '-I'
'/usr/i686-w64-mingw32/include' '-I' '/usr/i686-w64-mingw32/include/SDL' '-o'
'common/2d/bitblt.o' '-shared-libgcc' '-mtune=generic' '-march=pentiumpro'
/usr/lib/gcc/i686-w64-mingw32/7.3.0/cc1plus -E -quiet -v -I common/include -I
common/main -I . -I /usr/i686-w64-mingw32/include/libpng16 -I
/usr/i686-w64-mingw32/include -I /usr/i686-w64-mingw32/include/SDL -D_REENTRANT
-D _WIN32 -D WIN32_LEAN_AND_MEAN -D PHYSFS_DEPRECATED= -D NDEBUG -D RELEASE -D
_WIN32_WINNT=1536 common/2d/bitblt.cpp -mtune=generic -march=pentiumpro
-std=gnu++14 -Wall -Werror=extra -Werror=format=2 -Werror=missing-braces
-Werror=missing-include-dirs -Werror=uninitialized -Werror=undef
-Werror=pointer-arith -Werror=cast-qual -Werror=missing-declarations
-Werror=redundant-decls -Werror=vla -Werror=unused -Werror=useless-cast
-Wsuggest-attribute=noreturn -Wlogical-op -Wold-style-cast
-Wformat-truncation=0 -Wimplicit-fallthrough=0 -Wno-sign-compare -ftabstop=4
-funsigned-char -fvisibility=hidden -g -fworking-directory -O2 -fpch-preprocess
-o bitblt.ii
ignoring nonexistent directory
"/usr/lib/gcc/i686-w64-mingw32/7.3.0/../../../../i686-w64-mingw32/sys-include"
ignoring duplicate directory "/usr/i686-w64-mingw32/include"
as it is a non-system directory that duplicates a system directory
#include "..." search starts here:
#include <...> search starts here:
common/include
common/main
.
/usr/i686-w64-mingw32/include/libpng16
/usr/i686-w64-mingw32/include/SDL
/usr/lib/gcc/i686-w64-mingw32/7.3.0/../../../../i686-w64-mingw32/include/c++/7.3.0
/usr/lib/gcc/i686-w64-mingw32/7.3.0/../../../../i686-w64-mingw32/include/c++/7.3.0/i686-w64-mingw32
/usr/lib/gcc/i686-w64-mingw32/7.3.0/../../../../i686-w64-mingw32/include/c++/7.3.0/backward
/usr/lib/gcc/i686-w64-mingw32/7.3.0/include
/usr/lib/gcc/i686-w64-mingw32/7.3.0/include-fixed
/usr/lib/gcc/i686-w64-mingw32/7.3.0/../../../../i686-w64-mingw32/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-g' '-O2' '-ftabstop=4' '-Wall'
'-Werror=extra' '-Werror=format=2' '-Werror=missing-braces'
'-Werror=missing-include-dirs' '-Werror=uninitialized' '-Werror=undef'
'-Werror=pointer-arith' '-Werror=cast-qual' '-Werror=missing-declarations'
'-Werror=redundant-decls' '-Werror=vla' '-funsigned-char' '-std=gnu++14'
'-Werror=unused' '-Werror=useless-cast' '-fvisibility=hidden'
'-Wsuggest-attribute=noreturn' '-Wlogical-op' '-Wold-style-cast'
'-Wformat-truncation=0' '-Wimplicit-fallthrough=0' '-Wno-sign-compare' '-D'
'_WIN32' '-D' 'WIN32_LEAN_AND_MEAN' '-D' 'PHYSFS_DEPRECATED=' '-D' 'NDEBUG'
'-D' 'RELEASE' '-D' '_WIN32_WINNT=1536' '-I' 'common/include' '-I'
'common/main' '-I' '.' '-I' '/usr/i686-w64-mingw32/include/libpng16' '-I'
'/usr/i686-w64-mingw32/include' '-I' '/usr/i686-w64-mingw32/include/SDL' '-o'
'common/2d/bitblt.o' '-shared-libgcc' '-mtune=generic' '-march=pentiumpro'
/usr/lib/gcc/i686-w64-mingw32/7.3.0/cc1plus -fpreprocessed bitblt.ii -quiet
-dumpbase bitblt.cpp -mtune=generic -march=pentiumpro -auxbase-strip
common/2d/bitblt.o -g -O2 -Wall -Werror=extra -Werror=format=2
-Werror=missing-braces -Werror=missing-include-dirs -Werror=uninitialized
-Werror=undef -Werror=pointer-arith -Werror=cast-qual
-Werror=missing-declarations -Werror=redundant-decls -Werror=vla -Werror=unused
-Werror=useless-cast -Wsuggest-attribute=noreturn -Wlogical-op -Wold-style-cast
-Wformat-truncation=0 -Wimplicit-fallthrough=0 -Wno-sign-compare -std=gnu++14
-version -ftabstop=4 -funsigned-char -fvisibility=hidden -o bitblt.s
GNU C++14 (GCC) version 7.3.0 (i686-w64-mingw32)
compiled by GNU C version 7.3.1 20180312, GMP version 6.1.2, MPFR
version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (GCC) version 7.3.0 (i686-w64-mingw32)
compiled by GNU C version 7.3.1 20180312, GMP version 6.1.2, MPFR
version 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: b8d81686c188d4f6596852fd154b4661
common/2d/bitblt.cpp: In substitution of ‘template<class F> void
dcx::gr_for_each_bitmap_line(grs_canvas&, unsigned int, unsigned int, const
grs_bitmap&, F) [with F = <missing>]’:
common/2d/bitblt.cpp:96:50: required from here
common/2d/bitblt.cpp:96:50: internal compiler error: Segmentation fault
gr_for_each_bitmap_line(canvas, x, y, bm, d_memcpy);
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-599264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:36:39 2018
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Subject: [Bug target/84878] ICE: Segmentation fault (in add_cross_iteration_register_deps)
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-26
CC| |bergner at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Confirmed. You also get an ICE if you replace -mcpu=??? with just -maltivec
>From gcc-bugs-return-599265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:37:50 2018
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Mon, 26 Mar 2018 15:37:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For 7.x I think we need:
--- gcc/config/i386/sse.md.jj 2018-03-05 17:04:45.820743323 +0100
+++ gcc/config/i386/sse.md 2018-03-26 17:29:00.967880855 +0200
@@ -10687,7 +10687,7 @@
[(set (match_operand:VI2_AVX2_AVX512BW 0 "register_operand" "=x,v")
(any_lshift:VI2_AVX2_AVX512BW
(match_operand:VI2_AVX2_AVX512BW 1 "register_operand" "0,v")
- (match_operand:DI 2 "nonmemory_operand" "xN,vN")))]
+ (match_operand:DI 2 "nonmemory_operand" "xN,YvN")))]
"TARGET_SSE2 && <mask_mode512bit_condition> && <mask_avx512bw_condition>"
"@
p<vshift><ssemodesuffix>\t{%2, %0|%0, %2}
@@ -10706,7 +10706,7 @@
[(set (match_operand:VI48_AVX2 0 "register_operand" "=x,x,v")
(any_lshift:VI48_AVX2
(match_operand:VI48_AVX2 1 "register_operand" "0,x,v")
- (match_operand:DI 2 "nonmemory_operand" "xN,xN,vN")))]
+ (match_operand:DI 2 "nonmemory_operand" "xN,xN,YvN")))]
"TARGET_SSE2 && <mask_mode512bit_condition>"
"@
p<vshift><ssemodesuffix>\t{%2, %0|%0, %2}
but don't have time to test it right now, nor create short self-contained
testcases for it.
>From gcc-bugs-return-599266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:46:07 2018
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Subject: [Bug tree-optimization/84737] [8 Regression] 20% degradation in CPU2000 172.mgrid starting with r256888
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--- Comment #11 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I guess you'll need to check whether it is PR 55334 (i.e. not preserving
restrict accross ipa-cp and/or inlining) coming back somehow...
>From gcc-bugs-return-599267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:52:29 2018
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Subject: [Bug c++/85071] The g++ delete the memory alloced by new operator before I manually delete it.
Date: Mon, 26 Mar 2018 15:52:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
class Module : public SyntaxElement {
public:
Module() = default;
bool hasCalleesFor(IntrusiveRefCntPtr<Function> func) const
{ return true; }
};
void Context::setAvailableCallees() {
if(!M->hasCalleesFor(F)) return;
}
This creates an IntrusiveRefCntPtr<Function> which owns F, and so at the end of
the statement the smart pointer deletes F.
Any later use of that pointer (via this->F or the global func) is undefined.
>From gcc-bugs-return-599268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 15:56:11 2018
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Subject: [Bug c++/85071] The g++ delete the memory alloced by new operator before I manually delete it.
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Both valgrind and AddressSanitizer would have found this bug, you should use
them.
>From gcc-bugs-return-599269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 16:00:55 2018
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Subject: [Bug lto/85078] LTO ICE: tree check: expected tree that contains 'decl minimal' structure, have 'identifier_node' in decl_mangling_context, at cp/mangle.c:878
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--- Comment #1 from Franz Sirl <sirl at gcc dot gnu.org> ---
The ICE was introduced between r257623 and r257685.
>From gcc-bugs-return-599270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 16:03:00 2018
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Subject: [Bug libstdc++/28457] ext/pb_ds/regression/tree_data_map_rand.cc fails with a particular random seed.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |4.7.0
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Paolo Carlini from comment #7)
> Certainly I can confirm that the problem cannot be reproduced anymore by
> tweaking the random seed to 1153519516.
Given this comment, I don't know how to reproduce the original failure. So
let's say it's FIXED. Benjamin's commit was in GCC 4.7.0 so setting that for
the target milestone.
>From gcc-bugs-return-599271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 16:06:19 2018
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Subject: [Bug target/85080] New: [8 regression] gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c fails starting with r248678
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85080
Bug ID: 85080
Summary: [8 regression]
gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c fails
starting with r248678
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
This originally began failings with r248678 quite a long time ago (2017-05-31)
along with a bunch of other test cases. See
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80925. The others are all fixed
now but not this one.
FAIL: gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c scan-tree-dump-times vect
"vectorization not profitable" 1 (found 0 times)
FAIL: gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c scan-tree-dump-times vect
"vectorized 1 loops" 1 (found 2 times)
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Subject: [Bug target/85080] [8 regression] gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c fails starting with r248678
Date: Mon, 26 Mar 2018 16:08:00 -0000
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc64*-*-*
CC| |dje at gcc dot gnu.org,
| |wschmidt at gcc dot gnu.org
Host| |powerpc64*-*-*
Build| |powerpc64*-*-*
--- Comment #1 from seurer at gcc dot gnu.org ---
Note that this fails on both Le and BE.
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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++/85062] [6/7/8 Regression] ICE on alignas with parameter pack
Date: Mon, 26 Mar 2018 16:31:00 -0000
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Mar 26 16:30:41 2018
New Revision: 258859
URL: https://gcc.gnu.org/viewcvs?rev=258859&root=gcc&view=rev
Log:
PR c++/85062 - ICE with alignas in wrong place.
* decl.c (grokdeclarator): Ignore attributes on type-specifiers
here.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/alignas16.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/85081] New: [7(8 Regression] Sanitizer error with references in vectorized/parallel for-loop
Date: Mon, 26 Mar 2018 16:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85081
Bug ID: 85081
Summary: [7(8 Regression] Sanitizer error with references in
vectorized/parallel for-loop
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Keywords: openmp, wrong-code
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
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
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The following valid code snippet compiled with
"-fopenmp-simd -fsanitize=address"
is aborted by the sanitizer at runtime since GCC 7.1.0:
====================================================
inline const int& max(const int& a, const int& b)
{
return a < b ? b : a;
}
int main()
{
#pragma omp simd
// #pragma omp parallel for
for ( int i = 0; i < 20; ++i )
{
const int j = max(i, 1);
}
return 0;
}
====================================================
==25412==ERROR: AddressSanitizer: stack-use-after-scope on address
0x7ffe6a4ecac0 at pc 0x00000040090a bp 0x7ffe6a4eca80 sp 0x7ffe6a4eca78
WRITE of size 4 at 0x7ffe6a4ecac0 thread T0
#0 0x400909 in main (a.out+0x400909)
#1 0x7f88f7f84724 in __libc_start_main (/lib64/libc.so.6+0x20724)
#2 0x400748 in _start (a.out+0x400748)
Address 0x7ffe6a4ecac0 is located in stack of thread T0 at offset 32 in frame
#0 0x400805 in main (a.out+0x400805)
This frame has 2 object(s):
[32, 36) '<unknown>' <== Memory access at offset 32 is inside this variable
[96, 100) 'i'
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-use-after-scope (a.out+0x400909) in main
Shadow bytes around the buggy address:
0x10004d495900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495910: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495920: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495930: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495940: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10004d495950: 00 00 00 00 f1 f1 f1 f1[f8]f2 f2 f2 f2 f2 f2 f2
0x10004d495960: 04 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00
0x10004d495970: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d495990: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10004d4959a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==25412==ABORTING
The address-sanitizer also complains with "#pragma omp parallel for"
and "-fopenmp".
The problem persists if I change the return value of "max" to "int",
but disappears if I change the arguments to plain "int".
I don't know whether this is a sanitizer or OpenMP (or even a C++ frontend)
issue.
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Mon, 26 Mar 2018 17:40:00 -0000
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--- Comment #34 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok, I can now reproduce, but only with -flto, not without that.
Without -flto, before pre I see:
<bb 34> [local count: 85892]:
# logchl_591 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_701(129)>
# mc_799 = PHI <mc_795(D)(33), mc_715(129)>
# n_623 = PHI <0(33), _789(129)>
# DEBUG n => n_623
# DEBUG mc => mc_799
# DEBUG logchl => logchl_591
dlogchl.345_699 = dlogchl;
logchl_701 = logchl_591 + dlogchl.345_699;
# DEBUG logchl => logchl_701
_702 = __builtin_pow (1.0e+1, logchl_701);
chlamnt = _702;
# DEBUG m => 1
# DEBUG m => 1
...
in -fdump-tree-pre-details dump I see:
SCC consists of 67: logchl_591 .MEM_621 dlogchl.345_699 logchl_701 _702
.MEM_913 .MEM_914 .MEM_915 .MEM_916 .MEM_917 .MEM_918 stdout.350_714 .MEM_9
19 .MEM_920 .MEM_921 .MEM_922 .MEM_923 .MEM_924 .MEM_807 _718 _719 _723 _724
w2_725 w1_726 _727 _728 _729 _730 _731 .MEM_925 _732 _733 _734 _735 _7
36 .MEM_926 _737 _738 _739 _740 _741 .MEM_927 _742 _743 _744 _745 _746 .MEM_928
.MEM_944 mpercm.360_758 .MEM_622 _755 _757 _759 M.119_814 _761 _762
_765 _767 _768 M.120_202 _770 _771 _773 _774 .MEM_946
Starting iteration 1
Value numbering logchl_591 stmt = logchl_591 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_701(129)>
Setting value number of logchl_591 to
-3.0099999999999997868371792719699442386627197265625e+0 (changed)
Value numbering .MEM_621 stmt = .MEM_621 = PHI <.MEM_898(33), .MEM_946(129)>
Setting value number of .MEM_621 to .MEM_898 (changed)
Value numbering dlogchl.345_699 stmt = dlogchl.345_699 = dlogchl;
Setting value number of dlogchl.345_699 to
1.00000000000000002081668171172168513294309377670288085938e-2 (changed)
Value numbering logchl_701 stmt = logchl_701 = logchl_591 + dlogchl.345_699;
Match-and-simplified logchl_591 + dlogchl.345_699 to -3.0e+0
RHS logchl_591 + dlogchl.345_699 simplified to -3.0e+0
Setting value number of logchl_701 to -3.0e+0 (changed)
Value numbering _702 stmt = _702 = __builtin_pow (1.0e+1, logchl_701);
Match-and-simplified __builtin_pow (1.0e+1, logchl_701) to
1.00000000000000002081668171172168513294309377670288085938e-3
call __builtin_pow (1.0e+1, logchl_701) simplified to
1.00000000000000002081668171172168513294309377670288085938e-3
Setting value number of _702 to
1.00000000000000002081668171172168513294309377670288085938e-3 (changed)
With -flto, I see just similar:
<bb 34> [local count: 16255]:
# n_925 = PHI <0(33), _1128(129)>
# logchl_926 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_1040(129)>
# mc_928 = PHI <mc_1134(D)(33), mc_1054(129)>
# a1_lsm.5953_134 = PHI <a1_lsm.5953_1135(33), a1_lsm.5953_1120(129)>
# a2_lsm.5954_1153 = PHI <a2_lsm.5954_135(33), a2_lsm.5954_127(129)>
# b1_lsm.5955_1099 = PHI <b1_lsm.5955_136(33), b1_lsm.5955_128(129)>
# b2_lsm.5956_139 = PHI <b2_lsm.5956_1233(33), b2_lsm.5956_129(129)>
# DEBUG n => n_925
# DEBUG mc => mc_928
# DEBUG logchl => logchl_926
logchl_1040 = logchl_926 +
1.00000000000000002081668171172168513294309377670288085938e-2;
# DEBUG logchl => logchl_1040
_1041 = __builtin_pow (1.0e+1, logchl_1040);
chlamnt_lsm.5952_1150 = _1041;
# DEBUG m => 1
# DEBUG m => 1
before pre, but instead:
SCC consists of 2: logchl_926 logchl_1040
Starting iteration 1
Value numbering logchl_926 stmt = logchl_926 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_1040(129)>
Setting value number of logchl_926 to
-3.0099999999999997868371792719699442386627197265625e+0 (changed)
Value numbering logchl_1040 stmt = logchl_1040 = logchl_926 +
1.00000000000000002081668171172168513294309377670288085938e-2;
Match-and-simplified logchl_926 +
1.00000000000000002081668171172168513294309377670288085938e-2 to -3.0e+0
RHS logchl_926 + 1.00000000000000002081668171172168513294309377670288085938e-2
simplified to -3.0e+0
Setting value number of logchl_1040 to -3.0e+0 (changed)
Starting iteration 2
Value numbering logchl_926 stmt = logchl_926 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_1040(129)>
Setting value number of logchl_926 to logchl_926 (changed)
Value numbering logchl_1040 stmt = logchl_1040 = logchl_926 +
1.00000000000000002081668171172168513294309377670288085938e-2;
Setting value number of logchl_1040 to logchl_1040 (changed)
Processing SCC needed 3 iterations
Value numbering _1093 stmt = _1093 = (long int) k_1137;
Setting value number of _1093 to _1093 (changed)
Value numbering _1103 stmt = _1103 = _1091 + _1093;
Setting value number of _1103 to _1103 (changed)
Value numbering _1041 stmt = _1041 = __builtin_pow (1.0e+1, logchl_1040);
Setting value number of _1041 to _1041 (changed)
so this precomputation of the first iteration doesn't happen in that case.
Richard, any way to debug why? I'll attach the log files (lim2 and
pre-details).
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Subject: [Bug lto/81968] [8 regression] early lto debug objects make Solaris ld SEGV
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--- Comment #67 from rguenther at suse dot de <rguenther at suse dot de> ---
On March 26, 2018 2:46:08 PM GMT+02:00, "jakub at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81968
>
>--- Comment #66 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>(In reply to Jakub Jelinek from comment #63)
>> --- gcc/dwarf2out.c 2018-03-11 17:48:53.498068316 +0100
>> +++ gcc/dwarf2out.c 2018-03-13 10:58:03.477514623 +0100
>> @@ -28282,6 +28282,7 @@ output_macinfo (const char *debug_line_l
>> case DW_MACINFO_undef:
>> if ((!dwarf_strict || dwarf_version >= 5)
>> && HAVE_COMDAT_GROUP
>> + && !flag_lto
Flag_generate_lto || Flag_generate_offload
Is what we use elsewhere
>> && vec_safe_length (files) != 1
>> && i > 0
>> && i + 1 < length
>> help? If yes, we could go for && (!flag_lto ||
>!HAVE_BROKEN_LD_WHATEVER)
>> and add configure test for that.
>
>Rainer, does the above patch fix your remaining issues or are other
>sections
>involved too?
>From gcc-bugs-return-599277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 17:49:32 2018
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Subject: [Bug c/55976] -Werror=return-type should error on returning a value from a void function
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--- Comment #8 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Dave is on it.
>From gcc-bugs-return-599278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 17:50:15 2018
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Mon, 26 Mar 2018 17:50:00 -0000
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--- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43763
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43763&action=edit
pr82004_dumps.tar.xz
Dumps. For lto I've just added the init_sw_absorption function parts of the
dump, the dumps are too large.
>From gcc-bugs-return-599279-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 17:50:29 2018
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Subject: [Bug c/39808] warn_unused_result fails to produce warning in a statement expression
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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|gcc-bugs at gcc dot gnu.org |
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--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Dave is on it.
>From gcc-bugs-return-599280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 17:52:21 2018
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Subject: [Bug lto/81968] [8 regression] early lto debug objects make Solaris ld SEGV
Date: Mon, 26 Mar 2018 17:52:00 -0000
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--- Comment #68 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #67)
> On March 26, 2018 2:46:08 PM GMT+02:00, "jakub at gcc dot gnu.org"
> <gcc-bugzilla@gcc.gnu.org> wrote:
> >https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81968
> >
> >--- Comment #66 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> >(In reply to Jakub Jelinek from comment #63)
> >> --- gcc/dwarf2out.c 2018-03-11 17:48:53.498068316 +0100
> >> +++ gcc/dwarf2out.c 2018-03-13 10:58:03.477514623 +0100
> >> @@ -28282,6 +28282,7 @@ output_macinfo (const char *debug_line_l
> >> case DW_MACINFO_undef:
> >> if ((!dwarf_strict || dwarf_version >= 5)
> >> && HAVE_COMDAT_GROUP
> >> + && !flag_lto
>
> Flag_generate_lto || Flag_generate_offload
>
> Is what we use elsewhere
It is meant just to debug the issue, the final patch would use some configure
macro if it helps.
>From gcc-bugs-return-599281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 18:23:15 2018
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Subject: [Bug target/83638] atomic_is_lock_free should return false on pa-risc
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--- Comment #2 from mikulas at artax dot karlin.mff.cuni.cz ---
>From performance point of view it doesn't matter if the lock is taken inside
the kernel or inside the gcc library.
If the userspace wants to optimize different code paths for lockless atomics
and for locked atomics, atomic_is_lock_free should return false, to indicate
that the atomic operation is as costly as taking a lock.
>From gcc-bugs-return-599282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 19:11:28 2018
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Subject: [Bug fortran/85082] New: [8 Regression] ICE with -Ofast in vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Date: Mon, 26 Mar 2018 19:11:00 -0000
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Bug ID: 85082
Summary: [8 Regression] ICE with -Ofast in
vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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Changed before 20170618 :
$ cat z1.f90
program p
real(4) :: a, b
integer(4) :: n, m
equivalence (a, n)
a = 1024.0
m = 8
a = 1024.0
b = set_exponent(a, m)
n = 8
a = f(a, n)
b = set_exponent(a, m)
end
$ cat z2.f90
program p
real(8) :: a, b
integer(8) :: n, m
equivalence (a, n)
a = 1024.0
m = 8
a = 1024.0
b = set_exponent(a, m)
n = 8
a = f(a, n)
b = set_exponent(a, m)
end
$ gfortran-7 -c z1.f90 -Ofast
$ gfortran-8-20180325 -c z1.f90 -O3
$
$ gfortran-8-20180325 -c z1.f90 -Ofast
during GIMPLE pass: fre
z1.f90:12:0:
end
internal compiler error: in vn_reference_insert_pieces, at
tree-ssa-sccvn.c:2624
0xd11093 vn_reference_insert_pieces(tree_node*, int, tree_node*,
vec<vn_reference_op_struct, va_heap, vl_ptr>, tree_node*, unsigned int)
../../gcc/tree-ssa-sccvn.c:2624
0xd11151 vn_reference_lookup_or_insert_for_pieces
../../gcc/tree-ssa-sccvn.c:1646
0xd12135 vn_reference_lookup_3
../../gcc/tree-ssa-sccvn.c:2068
0xc728aa walk_non_aliased_vuses(ao_ref*, tree_node*, void* (*)(ao_ref*,
tree_node*, unsigned int, void*), void* (*)(ao_ref*, tree_node*, void*, bool*),
tree_node* (*)(tree_node*), void*)
../../gcc/tree-ssa-alias.c:2801
0xd0eaa0 vn_reference_lookup(tree_node*, tree_node*, vn_lookup_kind,
vn_reference_s**, bool)
../../gcc/tree-ssa-sccvn.c:2517
0xd0f431 eliminate_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-sccvn.c:5629
0x11dd2af dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:353
0xd0ac38 vn_eliminate(bitmap_head*)
../../gcc/tree-ssa-sccvn.c:5910
0xd16da1 execute
../../gcc/tree-ssa-sccvn.c:6018
>From gcc-bugs-return-599283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 19:14:24 2018
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Subject: [Bug fortran/85083] New: [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Mon, 26 Mar 2018 19:14:00 -0000
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Bug ID: 85083
Summary: [8 Regression] ICE in
gfc_convert_to_structure_constructor, at
fortran/primary.c:2915
Product: gcc
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Changed between 20180218 and 20180225 :
$ cat z1.f90
program p
type t
character(3) :: c
end type
type(t), allocatable :: z
allocate (z, source=t(.true.,'abc'))
end
$ gfortran-8-20180218 -c z1.f90
z1.f90:6:32:
allocate (z, source=t(.true.,'abc'))
1
Error: Too many components in structure constructor at (1)
$ gfortran-8-20180325 -c z1.f90
f951: internal compiler error: Segmentation fault
0xb9c38f crash_signal
../../gcc/toplev.c:325
0x705c4d gfc_convert_to_structure_constructor(gfc_expr*, gfc_symbol*,
gfc_expr**, gfc_actual_arglist**, bool)
../../gcc/fortran/primary.c:2915
0x70dbb8 resolve_generic_f
../../gcc/fortran/resolve.c:2699
0x70dbb8 resolve_function
../../gcc/fortran/resolve.c:3171
0x70df5a gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6709
0x71531b gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11092
0x71721a resolve_codes
../../gcc/fortran/resolve.c:16525
0x71731e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16560
0x700aea resolve_all_program_units
../../gcc/fortran/parse.c:6060
0x700aea gfc_parse_file()
../../gcc/fortran/parse.c:6310
0x74791f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-599284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 19:17:24 2018
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Subject: [Bug fortran/85084] New: [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
Date: Mon, 26 Mar 2018 19:17:00 -0000
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Bug ID: 85084
Summary: [6/7/8 Regression] ICE: out of memory allocating
18446744073709551600 bytes ...
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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Invalid code affects versions 6/7/8 :
$ cat z1.f90
program p
real :: a(3,3) = 1.0
real :: b(3)
b = matmul(a, a)
end
$ cat z2.f90
program p
real :: a(3,3) = 1.0
real :: b(33)
b = matmul(a, a)
end
$ gfortran-5 -c z1.f90 -O2
z1.f90:4:3:
b = matmul(a, a)
1
Error: Incompatible ranks 1 and 2 in assignment at (1)
$ gfortran-8 -c z1.f90 -O2
z1.f90:4:3:
b = matmul(a, a)
1
Error: Incompatible ranks 1 and 2 in assignment at (1)
f951: out of memory allocating 18446744073709551600 bytes after a total of
643072 bytes
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Subject: [Bug ipa/83983] FAIL: g++.dg/lto/pr83121 (test for LTO warnings, pr83121_0.C line 8)
Date: Mon, 26 Mar 2018 19:18:00 -0000
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|hppa-unknown-linux-gnu, |hppa-unknown-linux-gnu,
|arm-none-linux-gnueabihf |arm-none-linux-gnueabihf,
| |powerpc64*-*-*
CC| |seurer at gcc dot gnu.org
Host|hppa-unknown-linux-gnu |hppa-unknown-linux-gnu,
| |powerpc64*-*-*
Build|hppa-unknown-linux-gnu |hppa-unknown-linux-gnu,
| |powerpc64*-*-*
--- Comment #10 from seurer at gcc dot gnu.org ---
FYI these fail on powerpc64 as well both LE and BE.
FAIL: g++.dg/lto/pr83121 (test for LTO warnings, pr83121_0.C line 8)
FAIL: g++.dg/lto/pr83121 (test for LTO warnings, pr83121_1.C line 2)
FAIL: g++.dg/lto/pr83121 (test for LTO warnings, pr83121_1.C line 3)
FAIL: g++.dg/lto/pr83121 cp_lto_pr83121_0.o-cp_lto_pr83121_1.o link, -O0 -flto
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Subject: [Bug target/85073] [x86] extra check after BLSR
Date: Mon, 26 Mar 2018 19:26:00 -0000
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--- Comment #1 from uros at gcc dot gnu.org ---
Author: uros
Date: Mon Mar 26 19:26:19 2018
New Revision: 258864
URL: https://gcc.gnu.org/viewcvs?rev=258864&root=gcc&view=rev
Log:
PR target/85073
* config/i386/i386.md (*bmi_blsr_<mode>_cmp): New insn pattern.
(*bmi_blsr_<mode>_ccz): Ditto.
testsuite/ChangeLog:
PR target/85073
* gcc.target/i386/pr85073.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr85073.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/85073] [x86] extra check after BLSR
Date: Mon, 26 Mar 2018 19:31:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Target Milestone|--- |8.0
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
>From gcc-bugs-return-599288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 19:33:32 2018
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Subject: [Bug target/84878] ICE: Segmentation fault (in add_cross_iteration_register_deps)
Date: Mon, 26 Mar 2018 19:33:00 -0000
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--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
So we segv in ddg.c:add_cross_iteration_register_deps() at this code:
/* Create inter-loop true dependences and anti dependences. */
for (r_use = DF_REF_CHAIN (last_def); r_use != NULL; r_use = r_use->next)
{
rtx_insn *use_insn = DF_REF_INSN (r_use->ref);
^^^^ segv's
We currently have:
(gdb) pr def_insn
(insn 331 321 332 12 (parallel [
(set (reg:V4SI 239 [ vect__4.11 ])
(unspec:V4SI [
(reg:V4SF 134 [ vect_cst__39 ])
(const_int 0 [0])
] UNSPEC_VCTSXS))
(set (reg:SI 110 vscr)
(unspec:SI [
(const_int 0 [0])
] UNSPEC_SET_VSCR))
]) "bug.i":9 1812 {altivec_vctsxs}
(expr_list:REG_UNUSED (reg:V4SI 239 [ vect__4.11 ])
(nil)))
(gdb) p DF_REF_REGNO (last_def)
$4 = 110
So we're looking at the definition of the VSCR hard register, which is a global
register (ie, global_regs[110] == 1), but there are no following explicit uses
of the VSCR reg, so:
(gdb) p DF_REF_INSN_INFO(r_use->ref)
$5 = (df_insn_info *) 0x0
When we call DF_REF_INSN(r_use->ref) which deferences
DF_REF_INSN_INFO(r_use->ref), we segv.
The following patch cures the segv:
Index: gcc/ddg.c
===================================================================
--- gcc/ddg.c (revision 258802)
+++ gcc/ddg.c (working copy)
@@ -295,6 +295,11 @@ add_cross_iteration_register_deps (ddg_p
/* Create inter-loop true dependences and anti dependences. */
for (r_use = DF_REF_CHAIN (last_def); r_use != NULL; r_use = r_use->next)
{
+ /* PR84878: Some definitions of global hard registers may not have
+ any following uses or they may be artificial, so skip them. */
+ if (DF_REF_INSN_INFO (r_use->ref) == NULL)
+ continue;
+
rtx_insn *use_insn = DF_REF_INSN (r_use->ref);
if (BLOCK_FOR_INSN (use_insn) != g->bb)
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-26
CC| |tkoenig at gcc dot gnu.org
Known to work| |5.5.0
Target Milestone|--- |6.5
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.0.1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
f951: out of memory allocating 18446744073709551600 bytes after a total of 0
bytes
appears with -ffrontend-optimize and is suppressed with -fno-frontend-optimize.
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Mon, 26 Mar 2018 20:40:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #1 from Harald Anlauf <anlauf at gmx dot de> ---
The ICE is fixed by the obvious check:
Index: gcc/fortran/primary.c
===================================================================
--- gcc/fortran/primary.c (revision 258846)
+++ gcc/fortran/primary.c (working copy)
@@ -2898,6 +2898,7 @@
if (this_comp->ts.type == BT_CHARACTER && !this_comp->attr.allocatable
&& this_comp->ts.u.cl && this_comp->ts.u.cl->length
&& this_comp->ts.u.cl->length->expr_type == EXPR_CONSTANT
+ && actual->expr->ts.type == BT_CHARACTER
&& actual->expr->expr_type == EXPR_CONSTANT)
{
ptrdiff_t c, e;
This restores the original error message.
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--- Comment #38 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I think the correct state is NEW. There is a well-defined set of target
OSes that lack the target macro definitions describing those targets'
stdint.h types, each of which should be straightforward to fix for someone
with access to the target OS in question to examine its headers and run
tests.
>From gcc-bugs-return-599292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 20:51:40 2018
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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/83638] atomic_is_lock_free should return false on pa-risc
Date: Mon, 26 Mar 2018 20:51:00 -0000
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--- Comment #3 from dave.anglin at bell dot net ---
On 2018-03-26 2:23 PM, mikulas at artax dot karlin.mff.cuni.cz wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83638
>
> --- Comment #2 from mikulas at artax dot karlin.mff.cuni.cz ---
> >From performance point of view it doesn't matter if the lock is taken inside
> the kernel or inside the gcc library.
Actually, I believe it does. It's not possible for a userspace
implementation to be non
interruptable. The atomic implementation is also tied to the futex
implementation in the kernel.
Interrupts are disabled around the lock to ensure the code can't
schedule. The lock itself is
never held for more than a few instructions. However, the code may spin
in kernel and
userspace.
The original choice whether the support was "lock free" was based on the
following in md.texi:
 For the purposes of C++11 @code{std::atomic::is_lock_free}, it is
 assumed that these library calls do @emph{not} use any kind of
 interruptable locking.
The original linuxthread implementation used userspace locks and it was
pretty much a disaster
for a variety of reasons.
>
> If the userspace wants to optimize different code paths for lockless atomics
> and for locked atomics, atomic_is_lock_free should return false, to indicate
> that the atomic operation is as costly as taking a lock.
I'm not against atomic_is_lock_free always returning 0 on hppa but I've
yet to see a
real world situation where it makes a difference.
Dave
>From gcc-bugs-return-599293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 20:52:50 2018
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/84175] FAIL: c-c++-common/Warray-bounds-4.c -Wc++-compat strcpy (test for warnings, line 67)
Date: Mon, 26 Mar 2018 20:52:00 -0000
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|hppa64-hp-hpux11.11 |hppa64-hp-hpux11.11,
| |powerpc64*-*-*
CC| |msebor at gcc dot gnu.org,
| |seurer at gcc dot gnu.org
Host|hppa64-hp-hpux11.11 |hppa64-hp-hpux11.11,
| |powerpc64*-*-*
Build|hppa64-hp-hpux11.11 |hppa64-hp-hpux11.11,
| |powerpc64*-*-*
--- Comment #1 from seurer at gcc dot gnu.org ---
This also fails on powerpc64 both LE and BE and began with r255755 which is
where the test case was introduced it looks like.
------------------------------------------------------------------------
r255755 | msebor | 2017-12-16 17:58:34 -0600 (Sat, 16 Dec 2017) | 81 lines
PR tree-optimization/78918 - missing -Wrestrict on memcpy copying over self
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Mon, 26 Mar 2018 21:14:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |7.3.0
Keywords| |ice-on-invalid-code
Last reconfirmed| |2018-03-26
CC| |tkoenig at gcc dot gnu.org
Ever confirmed|0 |1
Target Milestone|--- |8.0
Known to fail| |8.0.1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The block has been added at revision r257856.
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Subject: [Bug fortran/85082] [8 Regression] ICE with -Ofast in vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Date: Mon, 26 Mar 2018 21:24:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-26
Known to work| |7.3.0
Target Milestone|--- |8.0
Ever confirmed|0 |1
Known to fail| |8.0.1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE appeared between revision r247817 (2017-05-09, OK) and r248367
(2017-05-23, ICE).
>From gcc-bugs-return-599296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 21:26:15 2018
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Subject: [Bug middle-end/83665] [8 regression] Big code size regression and some code quality improvement at Jan 2 2018
Date: Mon, 26 Mar 2018 21:26:00 -0000
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Pat Haugen <pthaugen at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pthaugen at gcc dot gnu.org
--- Comment #16 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #14)
> Author: hubicka
> Date: Mon Feb 12 09:48:06 2018
> New Revision: 257582
>
> URL: https://gcc.gnu.org/viewcvs?rev=257582&root=gcc&view=rev
> Log:
>
> PR middle-end/83665
> * params.def (inline-min-speedup): Increase from 8 to 15.
> (max-inline-insns-auto): Decrease from 40 to 30.
> * ipa-split.c (consider_split): Add some buffer for function to
> be considered inlining candidate.
> * invoke.texi (max-inline-insns-auto, inline-min-speedup): UPdate
> default values.
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/doc/invoke.texi
> trunk/gcc/ipa-split.c
> trunk/gcc/params.def
This change is responsible for a 6% degradation in CPU2000 175.vpr and a 12%
degradation in CPU2006 401.bzip2. Both run on a Power7 box.
>From gcc-bugs-return-599297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 21:34:09 2018
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Mon, 26 Mar 2018 21:34:00 -0000
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--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
Patch posted:
https://gcc.gnu.org/ml/fortran/2018-03/msg00197.html
>From gcc-bugs-return-599298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 21:48:59 2018
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From: "seurer at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/85085] New: [8 regression] Test case gfortran.dg/elemental_subroutine_3.f90 fails with __builtin_memcpy warnings
Date: Mon, 26 Mar 2018 21:48:00 -0000
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Bug ID: 85085
Summary: [8 regression] Test case
gfortran.dg/elemental_subroutine_3.f90 fails with
__builtin_memcpy warnings
Product: gcc
Version: 8.0
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These failures started with r247622. They were mentioned in a previous PR
which is fixed (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80643 and 80644 as
well) but there were many other test case failures and I think these just got
missed.
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O1 (test for excess errors)
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O2 (test for excess errors)
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess
errors)
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O3 -g (test for excess errors)
FAIL: gfortran.dg/elemental_subroutine_3.f90 -Os (test for excess errors)
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../gfortran
-B/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O1 -pedantic-errors
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-lm -o ./elemental_subroutine_3.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O1 (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../gfortran
-B/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -pedantic-errors
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-lm -o ./elemental_subroutine_3.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O2 (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../gfortran
-B/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions -pedantic-errors
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-lm -o ./elemental_subroutine_3.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 12 bytes from a region of size 8
[-Wstringop-overflow=]
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess
errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 12 bytes from a region of size 8
[-Wstringop-overflow=]
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../gfortran
-B/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -g -pedantic-errors
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-lm -o ./elemental_subroutine_3.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
FAIL: gfortran.dg/elemental_subroutine_3.f90 -O3 -g (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../gfortran
-B/home/seurer/gcc/build/gcc-trunk/gcc/testsuite/gfortran9/../../
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -Os -pedantic-errors
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-trunk/powerpc64le-unknown-linux-gnu/./libquadmath/.libs
-lm -o ./elemental_subroutine_3.exe
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
FAIL: gfortran.dg/elemental_subroutine_3.f90 -Os (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/gfortran.dg/elemental_subroutine_3.f90:37:0:
Warning: '__builtin_memcpy' reading 16 bytes from a region of size 12
[-Wstringop-overflow=]
>From gcc-bugs-return-599299-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:12:08 2018
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/80791] [8 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Mon, 26 Mar 2018 22:12:00 -0000
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--- Comment #12 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
It's not clear yet what we should do with this. It looks like SMS is able to
figure out that the sign-extension is not needed in the pre-r247885 code, but
can't sort this out with the IVOPTS change. The IVOPTS change looks perfectly
reasonable, but has the side effect of adding a second loop-carried dependency
on i_5. It could be that this is why SMS fails, but why is this worse than the
previous code, which instead had two loop-carried dependencies on ivtmp.10_18?
One clue is that the "before" code contains:
r174:SI = (SI)r164 + 32
r164:DI = zext(r174)
which is a self-contained loop-carried dependence. For the "after" code, this
disappears, and instead we introduce
r165:SI = (SI)r160 << 3
r166:DI = zext(r165)
Here we don't have a self-contained LCD, but it introduces confusion into an
existing LCD that occurs later:
r169:SI = (SI)r160 + 4
r160:DI = sext(r169)
The latter is the sign-extension that we aren't able to remove. I suspect that
the extra interference of the new code is the reason.
It looks like the cost leading to the IVOPTS change is probably very close to
the cost of leaving things as they were. Is that right? Is it possible for
IVOPTS to detect that it's going to complicate a simple LCD in a case where the
cost model doesn't show much difference? Not sure that is the right approach,
just wondering.
I will dig into the SMS algorithm next time I get some free time to look at it,
and try to confirm my guesses. Maybe it can be taught to deal with this case.
>From gcc-bugs-return-599300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:32:03 2018
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/85086] New: _Unwind_Resume can't unwind shadow stack with thread cancellation and alternate signal stack
Date: Mon, 26 Mar 2018 22:32:00 -0000
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Bug ID: 85086
Summary: _Unwind_Resume can't unwind shadow stack with thread
cancellation and alternate signal stack
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: x86
On Linux, when alternate signal stack is used with thread cancellation,
_Unwind_Resume fails when it tries to unwind shadow stack from signal
handler on alternate signal stack. The issue is that signal handler on
alternate signal stack uses a separate shadow stack and we must switch
to the original shadow stack to unwind it. But frame count will be wrong
in this case. For thread cancellation, there is no need to unwind shadow
stack since it will long jump back and exit.
>From gcc-bugs-return-599301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:40:08 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/79958] Missed tree DSE
Date: Mon, 26 Mar 2018 22:40:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Even if we were to follow both paths, only one path has the necessary clobbers
that would allow DSE to optimize away the assignment.
One could make an argument that a call to __builtin_abort should be generating
the necessary clobbers, or that they should be implicit.
If we were to fix the clobbers so that they existed on both paths, then ISTM
that we have to prove that the store is dead on all paths from the store. If
it is only dead on some paths then it ought to be a candidate for sinking.
This might argue that DSE and sinking should be sharing more infrastructure.
Anyway, seems like GCC 9 or later work.
>From gcc-bugs-return-599303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:44:05 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/83462] [8 regression] c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
Date: Mon, 26 Mar 2018 22:44:00 -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=84175
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 84175 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:44:04 2018
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Subject: [Bug c/84175] FAIL: c-c++-common/Warray-bounds-4.c -Wc++-compat strcpy (test for warnings, line 67)
Date: Mon, 26 Mar 2018 22:44:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=83462
Resolution|--- |DUPLICATE
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The test failures are also discussed in bug 83462. The root cause of the
missing warning is bug 83543: a missing strlen optimization. The following
shows the problem:
$ cat z.c && gcc -O2 -S -Wall -Wextra -fdump-tree-wrestrict=/dev/stdout z.c
void f (int i)
{
struct {
char a[5], b[7];
} x = { "", "012345" }; // strlen pass doesn't know how to compute the
lengths of x.a and x.b
if (i < 1 || 2 < i)
i = 1;
__builtin_strcpy (x.a + i, x.b);
__builtin_puts (x.a);
}
;; Function f (f, funcdef_no=0, decl_uid=2854, cgraph_uid=0, symbol_order=0)
f (int i)
{
struct
{
char a[5];
char b[7];
} x;
unsigned int i.0_1;
unsigned int _2;
char * _4;
sizetype _13;
sizetype prephitmp_14;
<bb 2> [local count: 1073741825]:
x = *.LC0;
i.0_1 = (unsigned int) i_8(D);
_2 = i.0_1 + 4294967295;
if (_2 > 1)
goto <bb 4>; [59.00%]
else
goto <bb 3>; [41.00%]
<bb 3> [local count: 440234144]:
_13 = (sizetype) i_8(D);
<bb 4> [local count: 1073741824]:
# prephitmp_14 = PHI <_13(3), 1(2)>
_4 = &x.a + prephitmp_14;
__builtin_strcpy (_4, &x.b);
__builtin_puts (&x.a);
x ={v} {CLOBBER};
return;
}
*** This bug has been marked as a duplicate of bug 83462 ***
>From gcc-bugs-return-599304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:49:42 2018
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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/83638] atomic_is_lock_free should return false on pa-risc
Date: Mon, 26 Mar 2018 22:49:00 -0000
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--- Comment #4 from dave.anglin at bell dot net ---
On 2018-03-26 2:23 PM, mikulas at artax dot karlin.mff.cuni.cz wrote:
> If the userspace wants to optimize different code paths for lockless atomics
> and for locked atomics, atomic_is_lock_free should return false, to indicate
> that the atomic operation is as costly as taking a lock.
At the moment, there's not really any way to specify this in the
backend. I believe the function returns true
in your examples because the call to can_compare_and_swap_p() in
fold_builtin_atomic_always_lock_free()
passes true for the allow_libcall argument.
 /* Check if a compare_and_swap pattern exists for the mode which
represents
    the required size. The pattern is not allowed to fail, so the
existence
    of the pattern indicates support is present. Also require that an
    atomic load exists for the required size. */
 if (can_compare_and_swap_p (mode, true) && can_atomic_load_p (mode))
   return boolean_true_node;
 else
   return boolean_false_node;
>From gcc-bugs-return-599305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:54:26 2018
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:57:03 2018
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Subject: [Bug middle-end/85085] [8 regression] Test case gfortran.dg/elemental_subroutine_3.f90 fails with __builtin_memcpy warnings
Date: Mon, 26 Mar 2018 22:57:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warnings in this test are the subject of bug 80645. It's still not
completely clear that the code the warning sees is correct (bug 80645 comment
#10 says the test case is valid as is the code emitted by the Fortran
front-end, but it doesn't speak to the validity of the GIMPLE, i.e., it doesn't
refute the analysis in bug 80645 comment #3). I am also yet to fix bug 80545
which is about -Wstringop-overflow= being enabled by default by the Fortran
front-end with no way to suppress it.
*** This bug has been marked as a duplicate of bug 80645 ***
>From gcc-bugs-return-599307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 22:57:05 2018
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Subject: [Bug fortran/80645] FAIL: gfortran.dg/elemental_subroutine_3.f90 -O1 (test for excess errors)
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |seurer at gcc dot gnu.org
--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 85085 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 26 23:01:36 2018
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Subject: [Bug c++/84905] Improve warning for __attribute__((const)) on function returning void
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #4)
> Resolving as Won't Fix based on comment #2. (I will update
> gcc-8/changes.html before the release and may update the documentation of
> attribute const in the manual with additional detail.)
Maybe also add a note to https://gcc.gnu.org/wiki/VerboseDiagnostics
>From gcc-bugs-return-599309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 00:00:55 2018
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Subject: [Bug tree-optimization/84774] [meta-bug] bogus/missing -Wrestrict
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-27
CC| |egallager at gcc dot gnu.org
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
Confirmed that this is a worthwhile meta-bug grouping.
>From gcc-bugs-return-599310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 00:13:32 2018
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Subject: [Bug c++/85087] New: call to a non-const member function on a const lvalue accepted
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Bug ID: 85087
Summary: call to a non-const member function on a const lvalue
accepted
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
While looking at bug 85043 I noticed that in the test case below, GCC correctly
rejects the attempt to convert the const reference to B to A in the call to g()
but it accepts the same invalid conversion in the context where a a non-const
member function on the result of the conversion is called. Other compilers
reject both conversions.
$ cat u.C && /ssd/build/gcc-git/gcc/xgcc -B /ssd/build/gcc-git/gcc -S -Wall
-Wextra -Wpedantic u.C
struct A { void f (); };
struct B {
operator const A& () const;
};
void g (A&);
void h (const B &b)
{
g ((A)b); // error: good
((A)b).f (); // accepted: bug
}
u.C: In function ‘void h(const B&)’:
u.C:11:6: error: cannot bind non-const lvalue reference of type ‘A&’ to an
rvalue of type ‘A’
g ((A)b); // error: good
^~~~
u.C:7:6: note: initializing argument 1 of ‘void g(A&)’
void g (A&);
^
>From gcc-bugs-return-599311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 00:17:44 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85087] call to a non-const member function on a const lvalue accepted
Date: Tue, 27 Mar 2018 00:17:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The code has been accepted since at least GCC 4 so it's not a regression.
For reference, EDG eccp 4.13 prints the following errors:
"u.C", line 11: error: qualifiers dropped in binding reference of type "A &" to
initializer of type "const A"
g ((A)b); // error: good
^
"u.C", line 13: error: the object has type qualifiers that are not compatible
with the member function "A::f"
object type is: const A
((A)b).f (); // accepted: bug
^
2 errors detected in the compilation of "u.C".
>From gcc-bugs-return-599313-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 01:55:21 2018
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Subject: [Bug target/58684] powerpc uses only unordered floating-point compares
Date: Tue, 27 Mar 2018 01:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58684
--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
*** Bug 84366 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/84366] gcc.dg/torture/float128-cmp-invalid.c fails when run on power9
Date: Tue, 27 Mar 2018 01:55:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 58684 ***
>From gcc-bugs-return-599314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 01:56:38 2018
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Subject: [Bug target/58684] powerpc uses only unordered floating-point compares
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Patch at https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01405.html .
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Subject: [Bug c/82272] RFE: request a warning for (<nonbool> == <bool>) etc.
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
I submitted N2229 to WG14:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2229.htm
I also opened Glibc bug for isdigit() et al. referenced in the paper:
https://sourceware.org/bugzilla/show_bug.cgi?id=23003
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Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |meissner at gcc dot gnu.org
--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
CCing Mike for his possible input.
>From gcc-bugs-return-599316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 02:08:31 2018
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Subject: [Bug rtl-optimization/85072] g++ -O1 consumes all memory
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--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Doing a more "correct" patch like below shows that nearly all possible
> "starts" are covered:
>
> (gdb) p bitmap_count_bits(starts)
> $2 = 500039
> (gdb) p max_regno - lra_constraint_new_regno_start
> $4 = 505207
>
> so preserving semantics that way doesn't end up helping memory use :/
>
> Index: gcc/lra-assigns.c
> ===================================================================
> --- gcc/lra-assigns.c (revision 258678)
> +++ gcc/lra-assigns.c (working copy)
> @@ -429,12 +429,25 @@ init_live_reload_and_inheritance_pseudos
> for (p = 0; p < lra_live_max_point; p++)
> bitmap_initialize (&live_reload_and_inheritance_pseudos[p],
> &live_reload_and_inheritance_pseudos_bitmap_obstack);
> + bitmap starts = BITMAP_ALLOC (NULL);
> + for (i = lra_constraint_new_regno_start; i < max_regno; i++)
> + for (r = lra_reg_info[i].live_ranges; r != NULL; r = r->next)
> + bitmap_set_bit (starts, r->start);
> for (i = lra_constraint_new_regno_start; i < max_regno; i++)
> {
> for (r = lra_reg_info[i].live_ranges; r != NULL; r = r->next)
> - for (p = r->start; p <= r->finish; p++)
> - bitmap_set_bit (&live_reload_and_inheritance_pseudos[p], i);
> + {
> + bitmap_iterator bi;
> + unsigned p;
> + EXECUTE_IF_SET_IN_BITMAP (starts, r->start, p, bi)
> + {
> + if (p > (unsigned)r->finish)
> + break;
> + bitmap_set_bit (&live_reload_and_inheritance_pseudos[p], i);
> + }
> + }
> }
> + BITMAP_FREE (starts);
> }
>
> /* Finalize data about living reload pseudos at any given program
The patch looks ok to me. Thank you, Richard. You can commit it into the
trunk.
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Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
Date: Tue, 27 Mar 2018 02:32:00 -0000
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--- Comment #10 from Peter Bergner <bergner at gcc dot gnu.org> ---
Created attachment 43764
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43764&action=edit
Alternate patch for PR80546
Mike created the vsx_mov<mode>_* patterns, so I asked him why he disparaged the
GPR moves. He said that reload (not LRA?) was attempting to use the GPR moves
for vector types and that was causing some horrible code. I can understand
that, but I don't understand why we should disparage them for the integer types
(DImode and TImode), since they normally live in GPRs to begin with. With that
in mind, I created the attached patch which seems to create better code for the
ptr4 test case than current trunk without changing the other functions.
Looking at the difference between the unpatched and patched bool3-p8.s files, I
see:
--- bool3-p8-old.s 2018-03-26 21:15:38.293963450 -0500
+++ bool3-p8-new.s 2018-03-26 21:16:27.514854332 -0500
@@ -134,13 +134,8 @@
# gpr reg 10
# 0 "" 2
#NO_APP
- mtvsrd 0,10
- mtvsrd 1,11
- xxpermdi 12,0,1,0
- xxlnor 0,12,12
- mfvsrd 10,0
- xxpermdi 0,0,0,3
- mfvsrd 11,0
+ not 10,10
+ not 11,11
#APP
# 76
"/home/bergner/gcc/gcc-fsf-mainline-pr84878/gcc/testsuite/gcc.target/powerpc/bool3.h"
1
# gpr reg 10
Mike, anyone, does this look reasonable? I'll mention that the costs for
BASE_REGS/GENERAL_REGS for r122 are much more reasonable compared to what Jakub
was seeing on Comment 3 with the unpatched compiler.
My bootstrap/regtesting of this patch is still running. Mike, do we have a
test case where this matters?
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Subject: [Bug rtl-optimization/84878] ICE: Segmentation fault (in add_cross_iteration_register_deps)
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| |patches/2018-03/msg01413.ht
| |ml
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Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
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--- Comment #11 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #10)
> My bootstrap/regtesting of this patch is still running.
Ok, the bootstrap and regtesting came back clean and both bool3-p[78].c tests
cases now PASS.
>From gcc-bugs-return-599321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 04:48:31 2018
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Subject: [Bug c++/85071] The g++ delete the memory alloced by new operator before I manually delete it.
Date: Tue, 27 Mar 2018 04:48:00 -0000
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--- Comment #3 from wierton <141242068 at smail dot nju.edu.cn> ---
(In reply to Jonathan Wakely from comment #2)
> Both valgrind and AddressSanitizer would have found this bug, you should use
> them.
I feel so sorry to post this stupid code. I re-checked it using valgrind and
re-checked the logic, and then found the problem as you mentioned. Thanks for
your patient explanation.
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Subject: [Bug c++/84632] [8 Regression] internal compiler error: tree check: expected record_type or union_type or qual_union_type, have array_type in reduced_constant_expression_p, at cp/constexpr.c:1778
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--- Comment #8 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Mar 27 06:52:04 2018
New Revision: 258870
URL: https://gcc.gnu.org/viewcvs?rev=258870&root=gcc&view=rev
Log:
/cp
2018-03-27 Paolo Carlini <paolo.carlini@oracle.com>
Jason Merrill <jason@redhat.com>
PR c++/84632
* init.c (build_aggr_init): When initializing from array,
reject anything but CONSTRUCTORs and TARGET_EXPRs.
(build_vec_init): Handle separately ARRAY_TYPEs.
/testsuite
2018-03-27 Paolo Carlini <paolo.carlini@oracle.com>
Jason Merrill <jason@redhat.com>
PR c++/84632
* g++.dg/init/array49.C: New.
* g++.dg/torture/pr70499.C: Adjust.
Added:
trunk/gcc/testsuite/g++.dg/init/array49.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/torture/pr70499.C
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Subject: [Bug c++/84632] [8 Regression] internal compiler error: tree check: expected record_type or union_type or qual_union_type, have array_type in reduced_constant_expression_p, at cp/constexpr.c:1778
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed. c++/72825 will track improvements to maybe_deduce_size_from_array_init
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Subject: [Bug c++/72825] ICE on invalid C++ code on x86_64-linux-gnu (internal compiler error: tree check: expected array_type, have error_mark in array_ref_low_bound, at tree.c:13013)
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
See notes on c++/84632 too.
>From gcc-bugs-return-599325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 07:54:32 2018
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Subject: [Bug c++/85067] [8 Regression] ICE with volatile parameter in defaulted copy-constructor
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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.
>From gcc-bugs-return-599326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:04:17 2018
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Subject: [Bug lto/85078] [8 Regression] LTO ICE: tree check: expected tree that contains 'decl minimal' structure, have 'identifier_node' in decl_mangling_context, at cp/mangle.c:878
Date: Tue, 27 Mar 2018 08:04:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
CC| |hubicka at gcc dot gnu.org
Target Milestone|--- |8.0
Summary|LTO ICE: tree check: |[8 Regression] LTO ICE:
|expected tree that contains |tree check: expected tree
|'decl minimal' structure, |that contains 'decl
|have 'identifier_node' in |minimal' structure, have
|decl_mangling_context, at |'identifier_node' in
|cp/mangle.c:878 |decl_mangling_context, at
| |cp/mangle.c:878
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So this is the devirt machinery "late" creating a cgraph node and computing a
DECL_ASSEMBLER_NAME _after_ free-lang-data killed TYPE_NAME of an entity
said to be ! type_with_linkage_p (type)
More specifically:
#22 0x0000000000ec6681 in gimple_get_virt_method_for_vtable (token=0,
v=<var_decl 0x7ffff6a09360 _ZTV1e>, offset=128, can_refer=0x7fffffffd377)
at /space/rguenther/src/svn/early-lto-debug/gcc/gimple-fold.c:6895
6895 cgraph_node::get_create (fn);
(gdb) p debug_generic_expr (fn)
c
and down via DECL_ASSEMBLER_NAME:
#4 0x00000000009a09b6 in write_name (
decl=<identifier_node 0x7ffff68acc00 __va_list_tag>, ignore_local_scope=0)
at /space/rguenther/src/svn/early-lto-debug/gcc/cp/mangle.c:906
906 context = decl_mangling_context (decl);
(gdb)
#5 0x00000000009ab761 in write_class_enum_type (
type=<record_type 0x7ffff68bbd20 __va_list_tag>)
at /space/rguenther/src/svn/early-lto-debug/gcc/cp/mangle.c:2809
2809 write_name (TYPE_NAME (type), /*ignore_local_scope=*/0);
(gdb) p type_with_linkage_p (0x7ffff68bbd20)
$2 = false
which is because of
201 /* Builtin types do not define linkage, their TYPE_CONTEXT is NULL.
*/
202 if (!TYPE_CONTEXT (t))
203 return false;
but to me the more important question is why we didn't assign the
assembler name for this entity before fld. This is because we do not
find it during the walk of the IL. Maybe because we do not walk
vtable initializers? Looks like vtables are not in varpool, so we
have to find them via walking BINFOs which we do not seem to do.
Looks like walking BINFO_TYPE/BINFO_VTABLE isn't enough to reach the
vtable entry either. Neither via the call stmts obj_type_ref_class.
So Honza, how do we reach the "correct" 'c'? I tried
Index: tree.c
===================================================================
--- tree.c (revision 258851)
+++ tree.c (working copy)
@@ -5522,6 +5522,8 @@ find_decls_types_r (tree *tp, int *ws, v
FOR_EACH_VEC_ELT (*BINFO_BASE_BINFOS (TYPE_BINFO (t)), i, tem)
fld_worklist_push (TREE_TYPE (tem), fld);
fld_worklist_push (BINFO_VIRTUALS (TYPE_BINFO (t)), fld);
+ fld_worklist_push (BINFO_TYPE (tem), fld);
+ fld_worklist_push (BINFO_VTABLE (tem), fld);
}
if (RECORD_OR_UNION_TYPE_P (t))
{
@@ -5700,7 +5702,11 @@ find_decls_types_in_node (struct cgraph_
gimple *stmt = gsi_stmt (si);
if (is_gimple_call (stmt))
- find_decls_types (gimple_call_fntype (stmt), fld);
+ {
+ find_decls_types (gimple_call_fntype (stmt), fld);
+ if (virtual_method_call_p (gimple_call_fn (stmt)))
+ find_decls_types (obj_type_ref_class (gimple_call_fn (stmt)),
fld);
+ }
for (i = 0; i < gimple_num_ops (stmt); i++)
{
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Tue, 27 Mar 2018 08:19:00 -0000
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--- Comment #13 from Matthias Kretz <kretz at kde dot org> ---
I'll try to apply it locally and will report my findings.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85079] Segfault While Compiling DXX-Rebirth Project
Date: Tue, 27 Mar 2018 08:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please attach preprocessed source. See https://gcc.gnu.org/bugs.html
>From gcc-bugs-return-599329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:20:43 2018
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Subject: [Bug target/85080] [8 regression] gcc.dg/vect/costmodel/ppc/costmodel-pr37194.c fails starting with r248678
Date: Tue, 27 Mar 2018 08:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-599330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:21:08 2018
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Subject: [Bug sanitizer/85081] [7/8 Regression] Sanitizer error with references in vectorized/parallel for-loop
Date: Tue, 27 Mar 2018 08:21:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-599331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:26:30 2018
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Subject: [Bug tree-optimization/85082] [8 Regression] ICE with -Ofast in vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Date: Tue, 27 Mar 2018 08:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-599332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:36:12 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/85088] New: improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 08:36:00 -0000
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Bug ID: 85088
Summary: improve diagnostic for bad INTENT declaration
('Invalid character in name at')
Product: gcc
Version: 8.0
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Priority: P3
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Simple example with three invalid variable declarations:
subroutine s(x, y, z)
integer, intent(int) :: x
integer, intent :: y
integer, inten :: z
end
Basically all gfortran versions I tried yield this output:
intent.f90:2:11:
integer, intent(int) :: x
1
Error: Invalid character in name at (1)
intent.f90:3:11:
integer, intent :: y
1
Error: Invalid character in name at (1)
intent.f90:4:11:
integer, inten :: z
1
Error: Invalid character in name at (1)
The first problem here is that the marker (1) is placed wrongly, or at least
not very exactly. Furthermore also the error message could be improved, in
particular in the first case, where one has a valid INTENT keyword, but with an
invalid argument.
>From gcc-bugs-return-599333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:40:50 2018
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 08:40:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
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Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-599334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:46:38 2018
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Subject: =?UTF-8?B?W0J1ZyB0YXJnZXQvODQ5MjZdIGVycm9yOiBpbmxpbmluZyBmYWlsZWQgaW4g?= =?UTF-8?B?Y2FsbCB0byBhbHdheXNfaW5saW5lIOKAmF9tbV9jcmMzMl91NjTigJk6IHRh?= =?UTF-8?B?cmdldCBzcGVjaWZpYyBvcHRpb24gbWlzbWF0Y2ggIF9tbV9jcmMzMl91NjQ=?Date: Tue, 27 Mar 2018 08:46:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to ДилÑн Палаузов from comment #4)
> Why does COLLECT_GCC_OPTIONS show '-march=x86-64', but
> https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html does not show x86-64 as
> valid option for -march?
It's error. Let me fix that.
>
> Why doesn't 'make CFLAGS="--verbose -march=native -flto"' work, in terms of
> detecting that ssse3 is available and there is no conflict?
>
It's probably duplicate of https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71991
Can you please confirm that?
>From gcc-bugs-return-599335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:47:51 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 lto/84995] Documentation gcc-ar and gcc-ranlib vs {libdir}/bfd-plugins
Date: Tue, 27 Mar 2018 08:47:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Let me document the behavior.
>From gcc-bugs-return-599336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:51:30 2018
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Subject: [Bug c++/84782] Rejects a maybe C++ code snippet
Date: Tue, 27 Mar 2018 08:51:00 -0000
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--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
I can confirm that the PR is blocking Chromium build in openSUSE.
Do I understand that correctly Jonathan that it's an issue in GCC? Or is it an
invalid code snippet?
>From gcc-bugs-return-599337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 08:55:54 2018
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Subject: [Bug c++/84782] Rejects a maybe C++ code snippet
Date: Tue, 27 Mar 2018 08:55:00 -0000
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--- Comment #10 from Raphael Kubo da Costa <raphael.kubo.da.costa at intel dot com> ---
(In reply to Martin Liška from comment #9)
> I can confirm that the PR is blocking Chromium build in openSUSE.
>From a Chromium perspective (where I'm coming from), it shouldn't be. The
problematic bits were changed in Chromium in
https://chromium-review.googlesource.com/c/chromium/src/+/944403 because of
this bug and the commit just be backported to unblock your package builds.
>From gcc-bugs-return-599338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:11:50 2018
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Subject: [Bug middle-end/82344] [8 Regression] SPEC CPU2006 435.gromacs ~10% performance regression with trunk@250855
Date: Tue, 27 Mar 2018 09:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Our tester has re-bounded early this year, not 100% to previous levels but to
an extent that looks enough to close this issue. Alexander, can you confirm
that on your side?
>From gcc-bugs-return-599339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:19:01 2018
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Subject: [Bug middle-end/82362] [8 Regression] SPEC CPU2006 436.cactusADM ~7% performance deviation with trunk@251713
Date: Tue, 27 Mar 2018 09:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |deferred
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Target Milestone|8.0 |9.0
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Deferred. Not sure if this "regression" is worth tracking.
>From gcc-bugs-return-599340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:33:35 2018
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Subject: [Bug testsuite/82847] [8 regression] gcc.dg/vect/slp-perm-9.c fail
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
sse3a_enabled of course requires us to manually put that at the dg-scan* lines
and thus in the end requires quite some target knowledge... But yes, it would
at least make it possible to properly select what we expect.
I'm testing whether sticking it to vect_perm_short works, even if not 100%
correct.
Index: gcc/testsuite/lib/target-supports.exp
===================================================================
--- gcc/testsuite/lib/target-supports.exp (revision 258851)
+++ gcc/testsuite/lib/target-supports.exp (working copy)
@@ -5828,6 +5828,8 @@ proc check_effective_target_vect_perm_sh
&& ![check_effective_target_vect_variable_length])
|| [istarget powerpc*-*-*]
|| [istarget spu-*-*]
+ || (([istarget i?86-*-*] || [istarget x86_64-*-*]
+ && [check_ssse3_available]))
|| ([istarget mips*-*-*]
&& [et-is-effective-target mips_msa])
|| ([istarget s390*-*-*]
@@ -8012,6 +8014,19 @@ proc check_avx_available { } {
#error unsupported
#endif
} ""] } {
+ return 1;
+ }
+ return 0;
+}
+
+# Return true if we are compiling for SSSE3 target.
+
+proc check_ssse3_available { } {
+ if { [check_no_compiler_messages sse3a_available assembly {
+ #ifndef __SSSE3__
+ #error unsupported
+ #endif
+ } ""] } {
return 1;
}
return 0;
>From gcc-bugs-return-599341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:34:49 2018
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Subject: [Bug rtl-optimization/82982] [8 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 5) in ready_sort_real in haifa scheduler
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
SPE isn't primary/secondary, demoting.
>From gcc-bugs-return-599342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:37:11 2018
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Subject: [Bug target/82989] [6/7 regression] Inexplicable use of NEON for 64-bit math
Date: Tue, 27 Mar 2018 09:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |8.0
Summary|[6/7/8 regression] |[6/7 regression]
|Inexplicable use of NEON |Inexplicable use of NEON
|for 64-bit math |for 64-bit math
Known to fail|8.0 |
--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-599343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:39:03 2018
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Subject: [Bug target/83009] [8 regression] gcc.target/aarch64/store_v2vec_lanes.c fails with -mabi=ilp32
Date: Tue, 27 Mar 2018 09:39:00 -0000
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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> ---
New test so the regression is a testsuite issue (should be XFAILed for ilp32).
Please do so ASAP, then we can drop the regression marker. Improving code-gen
on ilp32 is an enhancement.
>From gcc-bugs-return-599344-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:40:07 2018
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Subject: [Bug testsuite/83462] [8 regression] c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Martin, please work on fixing those fails.
>From gcc-bugs-return-599345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 09:41:56 2018
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Subject: [Bug debug/83480] ICE in create_block_for_bookkeeping, at sel-sched.c:4557
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |---
Summary|[8 Regression] ICE in |ICE in
|create_block_for_bookkeepin |create_block_for_bookkeepin
|g, at sel-sched.c:4557 |g, at sel-sched.c:4557
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's no longer a regression now since -gstatement-frontiers is new and now
required to trigger the ICE.
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Subject: [Bug middle-end/83665] [8 regression] Big code size regression and some code quality improvement at Jan 2 2018
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Pat, please open a new bug for the regression caused by the fix.
Closing original bug, IIRC numbers now show things are reasonable.
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/85089] New: std::minmax
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Bug ID: 85089
Summary: std::minmax
Product: gcc
Version: 5.4.0
URL: http://cpp.sh/72nog
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Created attachment 43765
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43765&action=edit
Source code file and detailed compiler messages.
Very simple using of minmax produces an error.
#include <iostream>
#include <string>
#include <algorithm>
int main()
{
std::pair<double, double> a = {2.0,1.0};
std::cout << a.first << " " << a.second << std::endl;
a = std::minmax(a.first, a.second);
std::cout << a.first << " " << a.second << std::endl;
}
Expected:
2 1
1 2
Got:
2 1
1 1
The same code available here http://cpp.sh/72nog. Workaround:
a = std::minmax({a.first, a.second});
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Subject: [Bug c++/85043] -Wuseless-cast false positive for temporary objects
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--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Noticed only today that the warning is documented correctly:
Warn when an expression is casted to its own type.
thus, all in all, I'm not at all convinced that we want to completely suppress
the warning for class types. Maybe we could think about adding levels to it,
like for -Wstrict-aliasing, or something similar.
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Subject: [Bug testsuite/84004] [8 regression] gcc.dg/vect/vect-95.c XPASSes
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling"
0 "vect" { xfail {vect_element_align} } } } */
but
# Return 1 if the target only requires element alignment for vector accesses
proc check_effective_target_vect_element_align { } {
so I'm not sure why we consider vect_element_align to be a reason to peel?
In fact we don't have a good target to test whether there's likely peeling.
Given the testcase in question:
__attribute__ ((noinline)) int
main1 (int n, float * __restrict__ pd, float * __restrict__ pa, float *
__restrict__ pb, float * __restrict__ pc)
{
int i;
for (i = 0; i < n; i++)
{
pa[i] = pb[i] * pc[i];
pd[i] = 5.0;
}
there are four refs and we can at most align one (unless IPA comes in the
way with LTO).
We have
r164941 | jules | 2010-10-04 16:59:30 +0200 (Mon, 04 Oct 2010) | 40 lines
gcc/testsuite/
* gcc.dg/vect/vect-42.c: Use vect_element_align instead of
vect_hw_misalign.
* gcc.dg/vect/vect-95.c: Likewise.
but vect_element_align is essentially vect_hw_misalign for most targets.
I'd say we should never peel this for alignment, that just doesn't make
sense. Some target costs models might disagree but we'll find out...
>From gcc-bugs-return-599354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:01:58 2018
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Subject: [Bug testsuite/84004] [8 regression] gcc.dg/vect/vect-95.c XPASSes
Date: Tue, 27 Mar 2018 10:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
And fixed. Hopefully...
>From gcc-bugs-return-599355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:02:25 2018
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Subject: [Bug testsuite/84004] [8 regression] gcc.dg/vect/vect-95.c XPASSes
Date: Tue, 27 Mar 2018 10:02:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 27 10:01:46 2018
New Revision: 258872
URL: https://gcc.gnu.org/viewcvs?rev=258872&root=gcc&view=rev
Log:
2018-03-27 Richard Biener <rguenther@suse.de>
PR testsuite/84004
* gcc.dg/vect/vect-95.c: Never expect the loop to be peeled for
alignment.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/vect-95.c
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Subject: [Bug rtl-optimization/84058] [8 Regression] RTl partitioning fixup should drag very small blocks back to hot partition
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Any ETA?
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Subject: [Bug rtl-optimization/84058] [8 Regression] RTl partitioning fixup should drag very small blocks back to hot partition
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>From gcc-bugs-return-599358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:22:47 2018
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Subject: [Bug middle-end/84067] [8 regression] gcc.dg/wmul-1.c regression on aarch64 after r257077
Date: Tue, 27 Mar 2018 10:22:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so I'll stick some single_use markers on the new patterns.
>From gcc-bugs-return-599359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:25:43 2018
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Subject: [Bug ipa/84149] [8 Regression] SPEC CPU2017 505.mcf/605.mcf ~10% performance regression with r256888
Date: Tue, 27 Mar 2018 10:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Seems we have a handle on this bug?
>From gcc-bugs-return-599360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:27:09 2018
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Subject: [Bug middle-end/84200] [8 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen
Date: Tue, 27 Mar 2018 10:27:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
This is the strange alignment case, right? So we're not really understanding
what goes wrong here and we're merely unlucky, correct? Leaving at P3.
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Subject: [Bug target/84280] [6/7/8 Regression] Performance regression in g++-7 with Eigen for non-AVX2 CPUs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so this means it is coalescing related. We still don't know which
coalescing is good/bad though.
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Subject: [Bug tree-optimization/84737] [8 Regression] 20% degradation in CPU2000 172.mgrid starting with r256888
Date: Tue, 27 Mar 2018 10:32:00 -0000
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
This still seems to lack proper analysis... thus a candidate for deferring.
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Subject: [Bug rtl-optimization/84780] [8 Regression] wrong code aarch64 with -O3 --param=tree-reassoc-width2
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/84872] [8 Regression] ICE in create_preheader, at cfgloopmanip.c:1536
Date: Tue, 27 Mar 2018 10:34:00 -0000
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Subject: [Bug c++/85039] [6/7/8 Regression] internal compiler error: in nested_anon_class_index, at cp/mangle.c:1626
Date: Tue, 27 Mar 2018 10:35:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/85026] [6/7 Regression] Error: branch out of range on arm-linux-gnueabihf
Date: Tue, 27 Mar 2018 10:35:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |8.0
Summary|[6/7/8 Regression] Error: |[6/7 Regression] Error:
|branch out of range on |branch out of range on
|arm-linux-gnueabihf |arm-linux-gnueabihf
Known to fail|8.0 |
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk I suppose.
>From gcc-bugs-return-599367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:35:42 2018
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Subject: [Bug target/85026] [6/7 Regression] Error: branch out of range on arm-linux-gnueabihf
Date: Tue, 27 Mar 2018 10:35:00 -0000
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--- Comment #7 from ktkachov at gcc dot gnu.org ---
Yes, will be backporting soon.
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Subject: [Bug middle-end/82344] [8 Regression] SPEC CPU2006 435.gromacs ~10% performance regression with trunk@250855
Date: Tue, 27 Mar 2018 10:36:00 -0000
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--- Comment #7 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
Yes, I've checked it - current performance is about previous level and
execution of these piece of code takes the same amount of time.
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Subject: [Bug lto/85078] [8 Regression] LTO ICE: tree check: expected tree that contains 'decl minimal' structure, have 'identifier_node' in decl_mangling_context, at cp/mangle.c:878
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Subject: [Bug debug/63572] [6/7/8 Regression] ICF breaks user debugging experience
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Subject: [Bug inline-asm/84679] [6/7/8 Regression] internal compiler error: in lra_eliminate_reg_if_possible, at lra-eliminations.c:1382
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Subject: [Bug inline-asm/84680] [6/7/8 Regression] internal compiler error: Max. number of generated reload insns per insn is achieved (90)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84680
Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug inline-asm/84677] [6/7/8 Regression] internal compiler error: in extract_constrain_insn, at recog.c:2205
Date: Tue, 27 Mar 2018 10:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/84733] [8 Regression] internal compiler error: Segmentation fault (check_local_shadow())
Date: Tue, 27 Mar 2018 10:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84733
Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-599375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:39:58 2018
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Subject: [Bug c++/81311] [7 Regression] An std::ref argument calls copy constructor instead of template constructor in C++17 mode
Date: Tue, 27 Mar 2018 10:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81311
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |8.0.1
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Known to fail|8.0.1 |
>From gcc-bugs-return-599376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:41:42 2018
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Subject: [Bug c++/82003] [5 Regression] Segmentation fault building kmymoney git sources.
Date: Tue, 27 Mar 2018 10:41:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to work| |6.1.0
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 6.
>From gcc-bugs-return-599378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:43:09 2018
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Subject: [Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
Date: Tue, 27 Mar 2018 10:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
Bug 26163 depends on bug 82344, which changed state.
Bug 82344 Summary: [8 Regression] SPEC CPU2006 435.gromacs ~10% performance regression with trunk@250855
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82344
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Subject: [Bug other/84613] [meta-bug] SPEC compiler performance issues
Date: Tue, 27 Mar 2018 10:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84613
Bug 84613 depends on bug 82344, which changed state.
Bug 82344 Summary: [8 Regression] SPEC CPU2006 435.gromacs ~10% performance regression with trunk@250855
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82344
What |Removed |Added
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>From gcc-bugs-return-599377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:43:09 2018
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Subject: [Bug middle-end/82344] [8 Regression] SPEC CPU2006 435.gromacs ~10% performance regression with trunk@250855
Date: Tue, 27 Mar 2018 10:43:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
So fixed.
>From gcc-bugs-return-599380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:45:45 2018
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Subject: [Bug libstdc++/85089] std::minmax
Date: Tue, 27 Mar 2018 10:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85089
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Component|c++ |libstdc++
Version|5.4.0 |7.3.1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
clang agrees (with libstdc++) so a libstdc++ issue (if an issue).
>From gcc-bugs-return-599381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 10:50:16 2018
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/85090] New: wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
Date: Tue, 27 Mar 2018 10:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85090
Bug ID: 85090
Summary: wrong code with -O2 -fno-tree-dominator-opts -mavx512f
-fira-algorithm=priority
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 43766
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43766&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fno-tree-dominator-opts -mavx512f
-fira-algorithm=priority testcase.c
$ sde64 -- ./a.out
Aborted
The value of x[] is "0000 0001 0002 0003 0000 0000 0000 0000 ...." instead of
"0000 0001 0002 0003 0004 0005 0006 0007 ...."
In the assembly output:
...
# testcase.c:13: i[0] <<= 1;
mov QWORD PTR [rsp+264], rax # %sfp, tmp4040
vmovq xmm20, QWORD PTR [rsp+264] # i, %sfp
# testcase.c:14: e = (7 & -d) << (7 & -(g & 7));
...
vmovq zeroes the high-order bits of zmm20 - and that's where the zeroes come
from.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in
specs.COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-258852-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-258852-checking-yes-rtl-df-extra-amd64
Thread model: posix
gcc version 8.0.1 20180326 (experimental) (GCC)
Tested revisions:
r258852 - FAIL
7-branch r258647 - OK
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Subject: [Bug c++/84733] [8 Regression] internal compiler error: Segmentation fault (check_local_shadow())
Date: Tue, 27 Mar 2018 10:52:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #1)
> The segfault started somewhere between r248121 (unaffected) and r248123
> (affected), probably r248123, so CCing Nathan.
That is not probably, but for sure. The reason the bisect seed doesn't have
r248122 built is that that changed only whitespace in the ChangeLog, a change
that can't affect the built compiler.
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Subject: [Bug c++/85068] [6/7/8 Regression] ICE with invalid covariant return type hierarchy
Date: Tue, 27 Mar 2018 11:02:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 27 11:02:08 2018
New Revision: 258873
URL: https://gcc.gnu.org/viewcvs?rev=258873&root=gcc&view=rev
Log:
PR c++/85068
* class.c (update_vtable_entry_for_fn): Don't ICE if base_binfo
is NULL. Assert if thunk_binfo is NULL then errorcount is non-zero.
* g++.dg/inherit/covariant22.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/inherit/covariant22.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84782] Rejects a maybe C++ code snippet
Date: Tue, 27 Mar 2018 11:04:00 -0000
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #9)
> Do I understand that correctly Jonathan that it's an issue in GCC? Or is it
> an invalid code snippet?
This is a GCC bug. The code should be accepted without an error.
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Subject: [Bug target/82518] [6/7 Regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb
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--- Comment #56 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Mar 27 11:19:55 2018
New Revision: 258874
URL: https://gcc.gnu.org/viewcvs?rev=258874&root=gcc&view=rev
Log:
[arm] PR target/82518: Return false in ARRAY_MODE_SUPPORTED_P for
BYTES_BIG_ENDIAN
Backport from mainline
2018-03-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/82518
* config/arm/arm.c (arm_array_mode_supported_p): Return false for
BYTES_BIG_ENDIAN.
* lib/target-supports.exp (check_effective_target_vect_load_lanes):
Disable for armeb targets.
* gcc.target/arm/pr82518.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/arm/pr82518.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/arm/arm.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/lib/target-supports.exp
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Subject: [Bug c++/85091] New: Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 11:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
Bug ID: 85091
Summary: Compiler generates different code depending on whether
-Wnonnull -Woverloaded-virtual given or not
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 43767
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43767&action=edit
Minimal test case reduced by delta
This is a completely impossible bug which is nevertheless observed when using
i686-w64-mingw32-c++ from Debian Buster (gcc version 7.2-win32 20180123): the
compiler produces different (and wrong) object code/assembly when using -O2
depending on whether *both* of "-Wnonnull -Woverloaded-virtual" options are
used or not (i.e. the same code is produced if none of them is given, if only
-Wnonnull is used or if only -Woverloaded-virtual is used, but the generated
code changes if both of them are used at once). Moreover, the generated code
may even change depending on the name of the input file on the command line:
the attached test case was produced by delta program and was originally called
tmp1/16795.cpp and running
i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2
tmp1/16795.cpp
produced correct code (i.e. the same as without the warning options), while
simply moving it to the current directory and running
i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 16795.cpp
produces wrong code.
To reproduce the problem, the same test script as used with delta can be used:
#!/bin/sh
i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 $1 -o
warn.o 2>/dev/null & pid1=$!
i686-w64-mingw32-g++ -c -std=c++17 -O2 $1 -o
nowarn.o 2>/dev/null & pid2=$!
if ! wait $pid1 || ! wait $pid2 ; then
exit 1
fi
if [ $(wc -c < warn.o) -eq $(wc -c < nowarn.o) ]; then
exit 2
fi
exit 0
(also attached). Running it on 16795.cpp shows that, without the warning
options, compiler generates the (expected, as everything is optimized out)
trivial body of test_main:
xor %eax, %eax
ret
while with the warning options it generates the following nonsensical
instructions:
lock addl $0x1,0x4c
ret
Also notice that this is really the minimal test case, removing any lines, even
clearly unused ones such as declarations of never called functions, makes the
problem disappear. For the same reason, this file can be only compiled, not
linked: adding definitions of various functions used in it makes the problem
disappear as well. However the original program, before the reduction, can, of
course, be linked, and running it after compiling this file with and without
the warning options produces different results at run-time.
Please see this thread for more context:
https://gcc.gnu.org/ml/gcc-help/2018-03/msg00077.html
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 11:21:00 -0000
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--- Comment #1 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 43768
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43768&action=edit
Test script used with delta, also useful for testing
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/78200] [7 Regression] 429.mcf of cpu2006 regresses in GCC trunk for avx2 target.
Date: Tue, 27 Mar 2018 11:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |7.4
Summary|[7/8 Regression] 429.mcf of |[7 Regression] 429.mcf of
|cpu2006 regresses in GCC |cpu2006 regresses in GCC
|trunk for avx2 target. |trunk for avx2 target.
--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Per https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01433.html dropping the 8
Regression part from this.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Tue, 27 Mar 2018 11:28:00 -0000
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--- Comment #36 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #35)
> Created attachment 43763 [details]
> pr82004_dumps.tar.xz
>
> Dumps. For lto I've just added the init_sw_absorption function parts of the
> dump, the dumps are too large.
Skipping partial redundancy for expression
{plus_expr,logchl_926,1.00000000000000002081668171172168513294309377670288085938e-2}
(0812), no redundancy on to be optimized for speed edge
Skipping partial redundancy for expression
{call_expr<__builtin_pow>,real_cst<1.0e+1>,logchl_1040} (0813), no redundancy
on to be optimized for speed edge
so with LTO we have "better" profile estimates and the entry edge is considered
cold...
LTO:
<bb 33> [local count: 3813]:
...
<bb 34> [local count: 16255]:
# n_925 = PHI <0(33), _1128(129)>
# logchl_926 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_1040(129)>
non-LTO:
<bb 33> [local count: 10616]:
...
<bb 34> [local count: 85892]:
# logchl_591 = PHI
<-3.0099999999999997868371792719699442386627197265625e+0(33), logchl_701(129)>
in general optimizing the redundancy on the entry edge isn't worth it given
it often increases register pressure by introducing loop-carried dependences.
So I think LTO is "correct" here, even if that's unfortunate... :/
>From gcc-bugs-return-599391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 11:53:22 2018
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Subject: [Bug c++/85057] GCC fails to vectorize code unless dummy loop is added
Date: Tue, 27 Mar 2018 11:53:00 -0000
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--- Comment #5 from Moritz Kreutzer <mokreutzer at gmail dot com> ---
(In reply to Richard Biener from comment #4)
> The issue lies in dependence analysis which faces
>
> _21 = (sizetype) i_24;
> _22 = _21 * 8;
> _2 = &a + _22;
> _13 = MEM[(const Type_t &)&a][i_24].v[0];
> _14 = _13 * 5.0e-1;
> MEM[(double &)_2] = _14;
>
> marks the two refs for a runtime alias test and then when doing that
> figures they always alias (but doesn't handle the distance == 0 case
> specially).
But then I still don't understand how adding the dummy loop helps GCC in
determining the independence of loop iterations.
>
> This is a dup of another existing bug that dependence analysis doesn't
> cope very well with a mix of pointer vs. array accesses.
Are you talking about 65206? Seems like it's not an easy bug to fix? Anyways, I
hope it helps to have proof of another manifestation of this bug...
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Subject: [Bug libstdc++/85089] std::minmax
Date: Tue, 27 Mar 2018 11:53:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
std::minmax returns a pair<const double&, const double&> which refers to the
original inputs, so you are doing this:
std::pair<double, double> a{ 2, 1 };
std::pair<const double&, const double&> a2{a.second, a.first};
a = a2;
which is equivalent to:
a.first = a.second;
a.second = a.first;
Obviously this can't preserve both original values.
>From gcc-bugs-return-599392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 12:10:31 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85057] GCC fails to vectorize code unless dummy loop is added
Date: Tue, 27 Mar 2018 12:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |65206
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Moritz Kreutzer from comment #5)
> (In reply to Richard Biener from comment #4)
> > The issue lies in dependence analysis which faces
> >
> > _21 = (sizetype) i_24;
> > _22 = _21 * 8;
> > _2 = &a + _22;
> > _13 = MEM[(const Type_t &)&a][i_24].v[0];
> > _14 = _13 * 5.0e-1;
> > MEM[(double &)_2] = _14;
> >
> > marks the two refs for a runtime alias test and then when doing that
> > figures they always alias (but doesn't handle the distance == 0 case
> > specially).
>
> But then I still don't understand how adding the dummy loop helps GCC in
> determining the independence of loop iterations.
I didn't try to see why but I guess "bad luck" ;) It probably makes
the first access a pointer one as well.
OK, so looking closer we have after early optimization:
<bb 6> [99.00%]:
_2 = &a[i_5];
_13 = MEM[(const Type_t &)_2].v[0];
_14 = _13 * 5.0e-1;
MEM[(double &)_2] = _14;
but then later forwprop is "lucky" to propagate _2 into just one of the
dereferences. Note that propagating into both wouldn't help because
the accesses do not have a similar structure -- one accesses a[i].v[0]
while the other accesses a[i] as if it were a 'double'. That seems to be
_2 = &a[i_7];
D.39137 = 5.0e-1;
D.39483 = operator*<double, 1, double> (&D.39137, _2); [return slot
optimization]
vs.
_3 = &a[i_7];
Vector<1,
double>::operator=<Pete::Expression<Pete::BinaryNode<Pete::OpMultiply,
Pete::Scalar<double>, Pete::Reference<Vector<1, double> > > > > (_3, &D.39483);
so somehow LHS vs. RHS evaluation goes a different path. Not sure if that's
avoidable (it's been some time since I worked with PETE).
> >
> > This is a dup of another existing bug that dependence analysis doesn't
> > cope very well with a mix of pointer vs. array accesses.
>
> Are you talking about 65206? Seems like it's not an easy bug to fix?
> Anyways, I hope it helps to have proof of another manifestation of this
> bug...
Yeah, that one looks like the same issue. Whether it's easy or not easy
to fix remains to be seen - it's mostly a matter of priority...
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65206
[Bug 65206] Vectorized version of loop is removed.
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Subject: [Bug tree-optimization/85082] [8 Regression] ICE with -Ofast in vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Date: Tue, 27 Mar 2018 12:14:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/85082] [8 Regression] ICE with -Ofast in vn_reference_insert_pieces, at tree-ssa-sccvn.c:2624
Date: Tue, 27 Mar 2018 12:14:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 27 12:13:55 2018
New Revision: 258877
URL: https://gcc.gnu.org/viewcvs?rev=258877&root=gcc&view=rev
Log:
2018-03-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/85082
* tree-ssa-sccvn.c (vn_reference_lookup_or_insert_for_pieces):
Valueize the VUSE.
* gfortran.dg/pr85082.f90: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/pr85082.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-27
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
This looks like a GC / memory corruption issue to me. Can you check whether
using -fchecking uncovers anything?
I expect the issue will be impossible to reproduce for us, can you nevertheless
please reproduce the output of
i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 -v
16795.cpp
? That is, if you append '-v'?
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Subject: [Bug c++/85057] GCC fails to vectorize code unless dummy loop is added
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--- Comment #7 from Moritz Kreutzer <mokreutzer at gmail dot com> ---
(In reply to Richard Biener from comment #6)
> I didn't try to see why but I guess "bad luck" ;) It probably makes
> the first access a pointer one as well.
Okay, in that case I'd rather call it "good luck" :)
> OK, so looking closer we have after early optimization:
>
> <bb 6> [99.00%]:
> _2 = &a[i_5];
> _13 = MEM[(const Type_t &)_2].v[0];
> _14 = _13 * 5.0e-1;
> MEM[(double &)_2] = _14;
>
> but then later forwprop is "lucky" to propagate _2 into just one of the
> dereferences. Note that propagating into both wouldn't help because
> the accesses do not have a similar structure -- one accesses a[i].v[0]
> while the other accesses a[i] as if it were a 'double'. That seems to be
>
> _2 = &a[i_7];
> D.39137 = 5.0e-1;
> D.39483 = operator*<double, 1, double> (&D.39137, _2); [return slot
> optimization]
>
> vs.
>
> _3 = &a[i_7];
> Vector<1,
> double>::operator=<Pete::Expression<Pete::BinaryNode<Pete::OpMultiply,
> Pete::Scalar<double>, Pete::Reference<Vector<1, double> > > > > (_3,
> &D.39483);
>
> so somehow LHS vs. RHS evaluation goes a different path. Not sure if that's
> avoidable (it's been some time since I worked with PETE).
I'll try to have a look into PETE to see whether we this can be avoided.
Otherwise, I'll just keep the dummy loop: It helps GCC to vectorize the code
and otherwise, it should just be ignored by any compiler. So I guess it should
at least do no harm.
> Yeah, that one looks like the same issue. Whether it's easy or not easy
> to fix remains to be seen - it's mostly a matter of priority...
Okay, I'll stay in the loop. Thanks for your prompt reply and for your help!
>From gcc-bugs-return-599397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 12:38:02 2018
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Subject: [Bug middle-end/84200] [8 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen
Date: Tue, 27 Mar 2018 12:38:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> This is the strange alignment case, right? So we're not really
> understanding what goes wrong here and we're merely unlucky, correct?
> Leaving at P3.
Yep, I'm fully happy with the classification. It's really weird regression.
>From gcc-bugs-return-599398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 12:50:21 2018
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Subject: [Bug c++/85092] New: ICE under -std=gnu++1z in build_over_call under, at cp/call.c:8149
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Bug ID: 85092
Summary: ICE under -std=gnu++1z in build_over_call under, at
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Recent regression.
$ cat citra.cpp
#include <string>
struct Part {
Part(const std::int32_t& value) : value{std::to_string(value)} {}
std::string value;
};
$ /opt/gcc/20180327/bin/g++ citra.cpp -std=gnu++1z
citra.cpp: In constructor ‘Part::Part(const int32_t&)’:
citra.cpp:4:66: internal compiler error: in build_over_call, at cp/call.c:8149
Part(const std::int32_t& value) : value{std::to_string(value)} {}
>From gcc-bugs-return-599399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 12:52:24 2018
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Subject: [Bug middle-end/84200] [8/9 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen/9
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |deferred
Target Milestone|8.0 |9.0
Summary|[8 Regression] r256888 |[8/9 Regression] r256888
|causes 30% performance |causes 30% performance
|regression of 519.lbm_r at |regression of 519.lbm_r at
|-Ofast generic tuning on |-Ofast generic tuning on
|Zen |Zen/9
>From gcc-bugs-return-599400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 12:58:09 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #3 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Richard Biener from comment #2)
> This looks like a GC / memory corruption issue to me. Can you check whether
> using -fchecking uncovers anything?
Using -fchecking doesn't change anything, using -fchecking=2 makes the bug
disappear.
> I expect the issue will be impossible to reproduce for us,
If you can install Debian Buster (current testing), it should be reproducible.
At the very least, I've tested this on 2 completely different machines and the
behaviour was exactly the same.
> can you nevertheless please reproduce the output of
>
> i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 -v
> 16795.cpp
>
> ? That is, if you append '-v'?
Sure:
% i686-w64-mingw32-g++ -c -std=c++17 -O2 -Wnonnull -Woverloaded-virtual -v
16795.cpp -o warn.o
Using built-in specs.
COLLECT_GCC=i686-w64-mingw32-g++
Target: i686-w64-mingw32
Configured with: ../../src/configure --build=i686-linux-gnu --prefix=/usr
--includedir='/usr/include' --mandir='/usr/share/man'
--infodir='/usr/share/info' --sysconfdir=/etc --localstatedir=/var
--disable-silent-rules --libdir='/usr/lib/i386-linux-gnu'
--libexecdir='/usr/lib/i386-linux-gnu' --disable-maintainer-mode
--disable-dependency-tracking --prefix=/usr --enable-shared --enable-static
--disable-multilib --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --libdir=/usr/lib --enable-libstdcxx-time=yes
--with-tune=generic --with-headers=/usr/i686-w64-mingw32/include
--enable-version-specific-runtime-libs --enable-fully-dynamic-string
--enable-libgomp --enable-languages=c,c++,fortran,objc,obj-c++,ada --enable-lto
--with-plugin-ld --enable-threads=win32 --program-suffix=-win32
--program-prefix=i686-w64-mingw32- --target=i686-w64-mingw32
--with-as=/usr/bin/i686-w64-mingw32-as --with-ld=/usr/bin/i686-w64-mingw32-ld
--enable-libatomic --enable-libstdcxx-filesystem-ts=yes
Thread model: win32
gcc version 7.2-win32 20180123 (GCC)
COLLECT_GCC_OPTIONS='-c' '-std=c++1z' '-O2' '-Wnonnull' '-Woverloaded-virtual'
'-v' '-o' 'warn.o' '-shared-libgcc' '-mtune=generic' '-march=pentiumpro'
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/cc1plus -quiet -v -U_REENTRANT
16795.cpp -quiet -dumpbase 16795.cpp -mtune=generic -march=pentiumpro
-auxbase-strip warn.o -O2 -Wnonnull -Woverloaded-virtual -std=c++1z -version -o
/tmp/ccmscJ4Y.s
GNU C++14 (GCC) version 7.2-win32 20180123 (i686-w64-mingw32)
compiled by GNU C version 7.2.0, GMP version 6.1.2, MPFR version
4.0.1-rc1, MPC version 1.1.0, isl version isl-0.18-GMP
warning: MPFR header version 4.0.1-rc1 differs from library version 4.0.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/usr/lib/gcc/i686-w64-mingw32/7.2-win32/../../../../i686-w64-mingw32/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/include/c++
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/include/c++/i686-w64-mingw32
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/include/c++/backward
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/include
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/include-fixed
/usr/lib/gcc/i686-w64-mingw32/7.2-win32/../../../../i686-w64-mingw32/include
End of search list.
GNU C++14 (GCC) version 7.2-win32 20180123 (i686-w64-mingw32)
compiled by GNU C version 7.2.0, GMP version 6.1.2, MPFR version
4.0.1-rc1, MPC version 1.1.0, isl version isl-0.18-GMP
warning: MPFR header version 4.0.1-rc1 differs from library version 4.0.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 9c828bbeabdb83d01b583e6b48da537a
16795.cpp: In function ‘unsigned int _get_output_format()’:
16795.cpp:316:25: warning: ‘unsigned int _get_output_format()’ redeclared
without dllimport attribute: previous dllimport ignored [-Wattributes]
extern "C" unsigned int _get_output_format(void) {return 1;}
^~~~~~~~~~~~~~~~~~
COLLECT_GCC_OPTIONS='-c' '-std=c++1z' '-O2' '-Wnonnull' '-Woverloaded-virtual'
'-v' '-o' 'warn.o' '-shared-libgcc' '-mtune=generic' '-march=pentiumpro'
/usr/bin/i686-w64-mingw32-as -v -o warn.o /tmp/ccmscJ4Y.s
GNU assembler version 2.29.1 (i686-w64-mingw32) using BFD version (GNU
Binutils) 2.29.1
COMPILER_PATH=/usr/lib/gcc/i686-w64-mingw32/7.2-win32/:/usr/lib/gcc/i686-w64-mingw32/7.2-win32/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/7.2-win32/:/usr/lib/gcc/i686-w64-mingw32/:/usr/lib/gcc/i686-w64-mingw32/7.2-win32/../../../../i686-w64-mingw32/bin/
LIBRARY_PATH=/usr/lib/gcc/i686-w64-mingw32/7.2-win32/:/usr/lib/gcc/i686-w64-mingw32/7.2-win32/../../../../i686-w64-mingw32/lib/../lib/:/usr/lib/gcc/i686-w64-mingw32/7.2-win32/../../../../i686-w64-mingw32/lib/
COLLECT_GCC_OPTIONS='-c' '-std=c++1z' '-O2' '-Wnonnull' '-Woverloaded-virtual'
'-v' '-o' 'warn.o' '-shared-libgcc' '-mtune=generic' '-march=pentiumpro'
>From gcc-bugs-return-599401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:02:24 2018
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Subject: [Bug target/84882] -mstrict-align on aarch64 should not be RejectNegative
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--- Comment #2 from sudi at gcc dot gnu.org ---
Proposed patch
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01439.html
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Subject: [Bug target/82518] [6 Regression] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb
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--- Comment #57 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Mar 27 13:07:22 2018
New Revision: 258879
URL: https://gcc.gnu.org/viewcvs?rev=258879&root=gcc&view=rev
Log:
[arm] PR target/82518: Return false in ARRAY_MODE_SUPPORTED_P for
BYTES_BIG_ENDIAN
Backport from mainline
2018-03-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/82518
* config/arm/arm.c (arm_array_mode_supported_p): Return false for
BYTES_BIG_ENDIAN.
* lib/target-supports.exp (check_effective_target_vect_load_lanes):
Disable for armeb targets.
* gcc.target/arm/pr82518.c: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/pr82518.c
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/arm/arm.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
branches/gcc-6-branch/gcc/testsuite/lib/target-supports.exp
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Tue, 27 Mar 2018 13:16:00 -0000
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--- Comment #14 from Matthias Kretz <kretz at kde dot org> ---
I applied both patches to my GCC 7.2 installation and as a result my complete
testsuite passes now. Anything else I can help with?
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 13:23:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I can't reproduce this with:
gcc version 7.2.0 20170814 (Fedora MinGW 7.2.0-1.fc26) (GCC)
I get one warning:
$ i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2
16795.cpp
16795.cpp: In function 'unsigned int _get_output_format()':
16795.cpp:316:25: warning: 'unsigned int _get_output_format()' redeclared
without dllimport attribute: previous dllimport ignored [-Wattributes]
extern "C" unsigned int _get_output_format(void) {return 1;}
^~~~~~~~~~~~~~~~~~
But no different code depending on the warning options used.
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Subject: [Bug middle-end/84067] [8 regression] gcc.dg/wmul-1.c regression on aarch64 after r257077
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/84067] [8 regression] gcc.dg/wmul-1.c regression on aarch64 after r257077
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 27 13:23:15 2018
New Revision: 258881
URL: https://gcc.gnu.org/viewcvs?rev=258881&root=gcc&view=rev
Log:
2018-03-27 Richard Biener <rguenther@suse.de>
PR middle-ed/84067
* match.pd ((A * C) +- (B * C) -> (A+-B) * C): Guard with
explicit single_use checks.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd
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Subject: [Bug testsuite/82847] [8 regression] gcc.dg/vect/slp-perm-9.c fail
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 27 13:26:04 2018
New Revision: 258882
URL: https://gcc.gnu.org/viewcvs?rev=258882&root=gcc&view=rev
Log:
2018-03-27 Richard Biener <rguenther@suse.de>
PR testsuite/82847
* lib/target-supports.exp (check_ssse3_available): New function.
(check_effective_target_vect_perm_short): Enable for x86 if
check_ssse3_available.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/target-supports.exp
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 27 Mar 2018, redi at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
>
> --- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> I can't reproduce this with:
> gcc version 7.2.0 20170814 (Fedora MinGW 7.2.0-1.fc26) (GCC)
>
> I get one warning:
>
> $ i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2
> 16795.cpp
> 16795.cpp: In function 'unsigned int _get_output_format()':
> 16795.cpp:316:25: warning: 'unsigned int _get_output_format()' redeclared
> without dllimport attribute: previous dllimport ignored [-Wattributes]
> extern "C" unsigned int _get_output_format(void) {return 1;}
> ^~~~~~~~~~~~~~~~~~
>
> But no different code depending on the warning options used.
It was whether the file was in a subdirectory or in the cwd, not
whether the warnings were used.
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/82989] [6/7 regression] Inexplicable use of NEON for 64-bit math
Date: Tue, 27 Mar 2018 13:27:00 -0000
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--- Comment #24 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Tue Mar 27 13:26:56 2018
New Revision: 258883
URL: https://gcc.gnu.org/viewcvs?rev=258883&root=gcc&view=rev
Log:
[ARM][PR82989] Fix unexpected use of NEON instructions for shifts
This is a backport of r258677 and r258723 of trunk.
*** gcc/ChangeLog ***
2018-03-27 Sudakshina Das <sudi.das@arm.com>
Backport from mainline:
2018-03-20 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* config/arm/neon.md (ashldi3_neon): Update ?s for constraints
to favor GPR over NEON registers.
(<shift>di3_neon): Likewise.
*** gcc/testsuite/ChangeLog ***
2018-03-27 Sudakshina Das <sudi.das@arm.com>
Backport from mainline:
2018-03-20 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* gcc.target/arm/pr82989.c: New test.
Backport from mainline:
2018-03-21 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* gcc.target/arm/pr82989.c: Change dg scan-assembly directives.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/arm/pr82989.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/arm/neon.md
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:28:12 2018
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From: "andrewjenner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/81084] [8 Regression] powerpcspe port full of confusing configury / command-line options not related to SPE
Date: Tue, 27 Mar 2018 13:28:00 -0000
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--- Comment #21 from Andrew Jenner <andrewjenner at gcc dot gnu.org> ---
I'm still actively working on it. The patch is close to ready for commit now, I
think - I'm going to try to get it committed by the end of the week.
>From gcc-bugs-return-599412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:30:49 2018
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/82518] gfortran.fortran-torture/execute/in-pack.f90 fails on armeb
Date: Tue, 27 Mar 2018 13:30:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |6.4.1
Resolution|--- |FIXED
Summary|[6 Regression] |gfortran.fortran-torture/ex
|gfortran.fortran-torture/ex |ecute/in-pack.f90 fails on
|ecute/in-pack.f90 fails on |armeb
|armeb |
Known to fail|6.4.1 |
--- Comment #58 from ktkachov at gcc dot gnu.org ---
Fixed on all active branches.
>From gcc-bugs-return-599413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:31:43 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 13:31:00 -0000
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--- Comment #6 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Jonathan Wakely from comment #4)
> I can't reproduce this with:
> gcc version 7.2.0 20170814 (Fedora MinGW 7.2.0-1.fc26) (GCC)
Thanks for testing! So this would seem to indicate that the problem is in the
Debian build of the (cross)compiler only, but looking at the Debian-specific
patches at
https://anonscm.debian.org/cgit/collab-maint/gcc-mingw-w64.git/tree/debian/patches/
I don't see anything that could be even remotely related to this problem, so I
still have no idea how is this possible.
> I get one warning:
>
> $ i686-w64-mingw32-g++ -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2
> 16795.cpp
> 16795.cpp: In function 'unsigned int _get_output_format()':
> 16795.cpp:316:25: warning: 'unsigned int _get_output_format()' redeclared
> without dllimport attribute: previous dllimport ignored [-Wattributes]
> extern "C" unsigned int _get_output_format(void) {return 1;}
> ^~~~~~~~~~~~~~~~~~
Yes, I get this warning too, but it's harmless (IMO it's a bug in MinGW-w64
headers, but it's a completely unrelated problem).
> But no different code depending on the warning options used.
To answer the comment #5 too: I do get different output (both with the initial,
real, program, and this test case) just depending on whether the warnings
options are used or not. The subdirectory part is a twist on top of that: if I
move the file to a subdirectory, then it compiles correctly even when using the
warning options. But the real problem is that just adding the warning options
to the command line changes the generated code (and breaks it).
>From gcc-bugs-return-599414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:41:34 2018
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Subject: [Bug target/82989] [6/7 regression] Inexplicable use of NEON for 64-bit math
Date: Tue, 27 Mar 2018 13:41:00 -0000
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--- Comment #25 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Tue Mar 27 13:40:56 2018
New Revision: 258884
URL: https://gcc.gnu.org/viewcvs?rev=258884&root=gcc&view=rev
Log:
[ARM][PR82989] Fix unexpected use of NEON instructions for shifts
This is a backport of r258677 and r258723 of trunk.
*** gcc/ChangeLog ***
2018-03-27 Sudakshina Das <sudi.das@arm.com>
Backport from mainline:
2018-03-20 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* config/arm/neon.md (ashldi3_neon): Update ?s for constraints
to favor GPR over NEON registers.
(<shift>di3_neon): Likewise.
*** gcc/testsuite/ChangeLog ***
2018-03-27 Sudakshina Das <sudi.das@arm.com>
Backport from mainline:
2018-03-20 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* gcc.target/arm/pr82989.c: New test.
Backport from mainline:
2018-03-21 Sudakshina Das <sudi.das@arm.com>
PR target/82989
* gcc.target/arm/pr82989.c: Change dg scan-assembly directives.
Added:
branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/pr82989.c
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/arm/neon.md
branches/gcc-6-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:42:55 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 13:42:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #5)
> It was whether the file was in a subdirectory or in the cwd, not
> whether the warnings were used.
Both:
https://gcc.gnu.org/ml/gcc-help/2018-03/msg00077.html
>From gcc-bugs-return-599416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:44:17 2018
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Subject: [Bug middle-end/85090] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
Date: Tue, 27 Mar 2018 13:44:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
CC| |ktkachov at gcc dot gnu.org
Component|target |middle-end
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
This is caused by r254548.
>From gcc-bugs-return-599417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 13:48:55 2018
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From: "spambox3 at fangwolg dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85093] New: wrong number of template arguments does not trigger error when one argument is variadic
Date: Tue, 27 Mar 2018 13:48:00 -0000
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Bug ID: 85093
Summary: wrong number of template arguments does not trigger
error when one argument is variadic
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: spambox3 at fangwolg dot de
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Created attachment 43769
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43769&action=edit
preprocessed example demonstrating the issue
The attached short example code passes two template arguments into a template
defined with one non-variadic template parameters. Although it should be
illegal code, it does not trigger an error with a recent gcc version. The
second (superfluous) template argument is given by a non-empty variadic
template parameter of another class.
the commandline
g++ --std=c++11 --save-temps bla.cc
finishes without error with gcc 7.2.0.
Using gcc 4.9.2 on the other hand aborts with the expected error
bla.cc:4:19: error: wrong number of template arguments (2, should be 1)
typedef A<V,G...> AB;
^
bla.cc:1:25: error: provided for 'template<class V> class A'
template<class V> class A {};
clang 5.0.0 also reports an error.
here is the source code:
template<class V> class A {};
template<class V, class... G> class B {
typedef A<V,G...> AB;
AB ab;
};
int main() {
B<int,double> b;
}
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
Thanks for bisecting, I'll have a look
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From: "cesar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/85056] [nvptx] wrong declaration of external arrays
Date: Tue, 27 Mar 2018 13:54:00 -0000
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--- Comment #3 from cesar at gcc dot gnu.org ---
Author: cesar
Date: Tue Mar 27 13:54:03 2018
New Revision: 258885
URL: https://gcc.gnu.org/viewcvs?rev=258885&root=gcc&view=rev
Log:
PR target/85056
gcc/
* config/nvptx/nvptx.c (nvptx_assemble_decl_begin): Add '[]' to
extern array declarations.
gcc/testsuite/
* testsuite/gcc.target/nvptx/pr85056.c: New test.
* testsuite/gcc.target/nvptx/pr85056a.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/nvptx/pr85056.c
trunk/gcc/testsuite/gcc.target/nvptx/pr85056a.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/nvptx/nvptx.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/85056] [nvptx] wrong declaration of external arrays
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cesar at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from cesar at gcc dot gnu.org ---
Fixed in trunk r258885 and openacc-gcc-7-branch 365d31be00.
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #8 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Vadim, can you please check if the issue is reproducible on preprocessed (-E)
input as well, and if so, attach the preprocessed testcase so people can try to
repro it without downloading Debian's MinGW headers? Thanks.
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Subject: [Bug target/81863] [7 regression] -mword-relocations is unreliable
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--- Comment #21 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Author: ramana
Date: Tue Mar 27 14:06:20 2018
New Revision: 258886
URL: https://gcc.gnu.org/viewcvs?rev=258886&root=gcc&view=rev
Log:
[Patch ARM] Fix PR target/81863
This has been in my patch stack for quite some time. The problem here
was that we weren't handling arm_word_relocations in
arm_valid_symbolic_address and is the surest fix for this
for GCC8 and GCC7.
Regression tested on arm-none-linux-gnueabihf . Applying to
trunk and backporting to GCC-7 in a day or so.
regards
Ramana
2018-03-27 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/81863
* config/arm/arm.c (arm_valid_symbolic_address): Handle
arm_word_relocations
2018-03-27 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/81863
* gcc.target/arm/pr81863.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr81863.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85093] [7/8 Regression] wrong number of template arguments does not trigger error when one argument is variadic
Date: Tue, 27 Mar 2018 14:10:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |6.4.0
Keywords| |accepts-invalid
Last reconfirmed| |2018-03-27
CC| |jason at gcc dot gnu.org
Ever confirmed|0 |1
Summary|wrong number of template |[7/8 Regression] wrong
|arguments does not trigger |number of template
|error when one argument is |arguments does not trigger
|variadic |error when one argument is
| |variadic
Known to fail| |7.3.0, 8.0.1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Started to be accepted with r243869
Fix handling of explicit function template arguments with TTPs.
gcc/cp/
* pt.c (coerce_template_parms): Consider variadic_args_p before
complaining about too many template arguments.
libstdc++-v3/
* testsuite/util/testsuite_tr1.h (test_property): Don't define both
variadic and non-variadic overloads.
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 14:13:00 -0000
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--- Comment #9 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Another data point: I can also reproduce the problem with the native (i.e.
Linux) g++ 7.3 (Debian 7.3.0-12), although it looks slightly differently there:
all 3 of the following commands produce different object files:
g++-7 -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 foo.cpp
g++-7 -c -std=c++17 -Wnonnull -Woverloaded-virtual -O2 tmp/foo.cpp
g++-7 -c -std=c++17 -O2 foo.cpp
i.e. moving the file to a subdirectory doesn't mitigate the problem (I probably
should have avoided mentioning this in the first place to avoid confusing the
matters, sorry). I'm running delta right now to produce a minimized test case
for the native compiler, but I am not sure if it's really going to help...
The tentative conclusion is that it's not a gcc bug, but a Debian bug, and as
it doesn't affect only the cross-compiler, it must be due to one of the
Debian-specific patches to gcc itself (thanks to Stephen Kitt, Debian mingw-w64
maintainer, for pointing this out). Unfortunately their list (see
https://anonscm.debian.org/viewvc/gcccvs/branches/sid/gcc-7/debian/patches/
) is much longer than the list of patches to mingw-w64 and it's not really
obvious which one could be to blame...
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #10 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 43770
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43770&action=edit
Compressed preprocessed test case
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 14:23:00 -0000
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--- Comment #11 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Alexander Monakov from comment #8)
> Vadim, can you please check if the issue is reproducible on preprocessed
> (-E) input as well,
Yes, it is. I've actually started with the preprocessed input initially, but it
was so big (~90kLoC) that delta didn't make much progress with it after running
for ~2 days, which is why I finally didn't use it. And preprocessing the
current test case still results in a ~55kLoC file, so I've had to compress it
to attach it here.
> and if so, attach the preprocessed testcase so people
> can try to repro it without downloading Debian's MinGW headers?
Sure, done now.
Thanks again for looking at this!
>From gcc-bugs-return-599427-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 14:28:29 2018
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84786] [miscompilation] vunpcklpd accessing xmm16-22 targeting KNL
Date: Tue, 27 Mar 2018 14:28:00 -0000
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--- Comment #15 from Matthias Kretz <kretz at kde dot org> ---
Here's an idea for a test case (https://godbolt.org/g/SjM2HE: it appears fixed
on GCC 8):
typedef unsigned short V __attribute__((vector_size (16)));
V foo (V x, int y)
{
x <<= y;
asm volatile (""::"x"(x):"xmm1", "xmm2", "xmm3",
"xmm4", "xmm5", "xmm6", "xmm7", "xmm8", "xmm9",
"xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15");
return x >> y;
}
>From gcc-bugs-return-599428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 14:39:14 2018
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 14:39:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
This issue might actually be related to a TODO note in decl.c, which could be
removed like this:
Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c (revision 258757)
+++ gcc/fortran/decl.c (working copy)
@@ -4791,13 +4791,7 @@ match_attr_spec (void)
if (match_string_p ("nt"))
{
/* Matched "intent". */
- /* TODO: Call match_intent_spec from here. */
- if (gfc_match (" ( in out )") == MATCH_YES)
- d = DECL_INOUT;
- else if (gfc_match (" ( in )") == MATCH_YES)
- d = DECL_IN;
- else if (gfc_match (" ( out )") == MATCH_YES)
- d = DECL_OUT;
+ d = match_intent_spec ();
}
}
else if (ch == 'r')
With this modification I get:
intent.f90:2:18:
integer, intent(int) :: x
1
Error: Bad INTENT specification at (1)
intent.f90:4:11:
integer, inten :: z
1
Error: Invalid character in name at (1)
So, the first case is better now, the second is (wrongly) accepted and the
third is unchanged.
TODO:
1) reject the second case
2) check for regressions
3) find out why the TODO is there in the first place (I guess there's a reason
why this simple replacement has not been done already? Probably due to item
#1?)
>From gcc-bugs-return-599429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 14:49:13 2018
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Subject: [Bug c/85094] New: -g with any optimization suppresses -Wduplicated-branches
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-Wduplicated-branches
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This small testcase doesn't warn if compiled with -g and -O1 or higher. Only
"-g -O0" or for example -O2 without -g warn for the testcase. This is trunk at
r258870. gcc-7 warns as expected.
extern int g;
void f(int r)
{
if (r < 64)
g -= 48;
else if (r < 80)
g -= 64 - 45;
else
g -= 80 - 61;
}
>From gcc-bugs-return-599430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 14:53:46 2018
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Subject: [Bug ipa/85095] New: [6/7/8 Regression] worse code generated
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Bug ID: 85095
Summary: [6/7/8 Regression] worse code generated
Product: gcc
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typedef unsigned long uint64_t;
uint64_t adc(uint64_t a, uint64_t b)
{
a += b;
if (a < b) /* should simplify to nothing (setting carry is implicit in the
add) */
a++; /* should simplify to adc r0, 0 */
return a;
}
At r230856 with -O3 this gets compiled to:
movq %rdi, %rax # a, a
addq %rsi, %rax # b, a
adcq $0, %rax #, <retval>
ret
At r230857 it becomes:
xorl %eax, %eax # _7
addq %rdi, %rsi # a, tmp93
setc %al #, _7
cmpq $1, %rax #, _7
movq %rsi, %rax # tmp93, tmp93
sbbq $-1, %rax #, tmp93
ret
commit 83caf9ff7e5307a3982af5efe4885524b0be0d88
Author: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Nov 25 09:08:20 2015 +0000
* ipa-inline-analysis.c: Include gimplify.h
(set_cond_stmt_execution_predicate,
set_switch_stmt_execution_predicate): Be sure to not leak locations
to function body.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230857
138bc75d-0d04-0410-961f-82ee72b054a4
>From gcc-bugs-return-599431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:04:08 2018
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Subject: [Bug c/85096] New: [6/7/8 Regression] Unnecessary(?) MOV instructions for int128 addition
Date: Tue, 27 Mar 2018 15:04:00 -0000
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Bug ID: 85096
Summary: [6/7/8 Regression] Unnecessary(?) MOV instructions for
int128 addition
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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CC: uros at gcc dot gnu.org, vmakarov at gcc dot gnu.org
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__uint128_t add128(__uint128_t a, __uint128_t b) {
return a + b;
}
GCC with -O3 produces:
mov r9, rdi # a, a
mov r10, rsi # a, a
add r9, rdx # a, b
adc r10, rcx # a, b
mov rax, r9 # tmp93, a
mov rdx, r10 #, a
ret
GCC 4.8.5 produced:
mov rax, rdx # D.1732, b
mov rdx, rcx # D.1732, b
add rax, rdi # D.1732, a
adc rdx, rsi # D.1732, a
ret
Clang produces:
add rdi, rdx
adc rsi, rcx
mov rax, rdi
mov rdx, rsi
ret
and ICC:
add rdi, rdx #3.14
mov rax, rdi #3.14
adc rsi, rcx #3.14
mov rdx, rsi #3.14
ret #3.14
I don't know which component this should be, but Jakub suggested to CC Vlad and
Uros, so maybe one of you can re-assign it to the right component.
>From gcc-bugs-return-599432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:05:47 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/80791] [8 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Tue, 27 Mar 2018 15:05:00 -0000
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--- Comment #13 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Actually it appears that the IVOPTS change results in worse code going into
SMS, regardless of whether SMS can succeed on the loop. It comes down to the
fact that IVOPTS formerly pulled a multiply (left-shift) out of the loop, but
now the multiply remains in the loop.
After all the do_loop work and so forth, we end up with the following going
into SMS. The r247884 loop is on the left, r247885 on the right:
lab27: lab20:
r162, ca = r162 >> 1 r157, ca = r157 >> 1
r169 = r162 << 3 r163 = r157 << 3
r166 = (r160 << 3) & 0xfffffff8
r171 = r177 + r164 r167 = r172 + r166
*(r177 + r169) = r171 *(r172 + r163) = r167
r174 = (SI)r164 + 32 r169 = (SI)r160 + 4
r164 = zext(r174) r164 = sext(r169)
bdnz r178, lab27 bdnz r173, lab20
The loss of hoisting of the multiply/shift shows up in the optimized and vregs
dumps as well; RTL optimizations aren't able to recover from this.
So I think this still comes down to an unfortunate choice made in IVOPTS.
>From gcc-bugs-return-599433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:17:16 2018
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Subject: [Bug c/85096] [6/7/8 Regression] Unnecessary(?) MOV instructions for int128 addition
Date: Tue, 27 Mar 2018 15:17:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.5
Known to fail| |4.9.4, 5.5.0, 6.3.0, 7.3.0,
| |8.0.1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This regressed with r204212
commit 284f069678f0b28c57e62b5da9b6dfed77d4d700
Author: vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Oct 30 14:27:25 2013 +0000
2013-10-30 Vladimir Makarov <vmakarov@redhat.com>
* regmove.c: Remove.
* tree-pass.h (make_pass_regmove): Remove.
* timevar.def (TV_REGMOVE): Remove.
* passes.def (pass_regmove): Remove.
* opts.c (default_options_table): Remove entry for regmove.
* doc/passes.texi: Remove regmove pass description.
* doc/invoke.texi (-foptimize-register-move, -fregmove): Remove
options.
(-fdump-rtl-regmove): Ditto.
* common.opt (foptimize-register-move, fregmove): Ignore.
* Makefile.in (OBJS): Remove regmove.o.
* regmove.c: Remove.
* ira-int.h (struct ira_allocno_pref, ira_pref_t): New structure
and type.
(struct ira_allocno) New member allocno_prefs.
(ALLOCNO_PREFS): New macro.
(ira_prefs, ira_prefs_num): New external vars.
(ira_setup_alts, ira_get_dup_out_num, ira_debug_pref): New
prototypes.
(ira_debug_prefs, ira_debug_allocno_prefs, ira_create_pref):
Ditto.
(ira_add_allocno_pref, ira_remove_pref, ira_remove_allocno_prefs):
Ditto.
(ira_add_allocno_copy_to_list): Remove prototype.
(ira_swap_allocno_copy_ends_if_necessary): Ditto.
(ira_pref_iterator): New type.
(ira_pref_iter_init, ira_pref_iter_cond): New functions.
(FOR_EACH_PREF): New macro.
* ira.c (commutative_constraint_p): Move from ira-conflicts.c.
(ira_get_dup_out_num): Ditto. Rename from get_dup_num. Modify the
code.
(ira_setup_alts): New function.
(decrease_live_ranges_number): New function.
(ira): Call the above function.
* ira-build.c (ira_prefs, ira_prefs_num): New global vars.
(ira_create_allocno): Initialize allocno prefs.
(pref_pool, pref_vec): New static vars.
(initiate_prefs, find_allocno_pref, ira_create_pref): New
functions.
(add_allocno_pref_to_list, ira_add_allocno_pref, print_pref):
Ditto.
(ira_debug_pref, print_prefs, ira_debug_prefs): Ditto.
(print_allocno_prefs, ira_debug_allocno_prefs, finish_pref): Ditto.
(ira_remove_pref, ira_remove_allocno_prefs, finish_prefs): Ditto.
(ira_add_allocno_copy_to_list): Make static. Rename to
add_allocno_copy_to_list.
(ira_swap_allocno_copy_ends_if_necessary): Make static. Rename to
swap_allocno_copy_ends_if_necessary.
(remove_unnecessary_allocnos, remove_low_level_allocnos): Call
ira_remove_allocno_prefs.
(ira_flattening): Ditto.
(ira_build): Call initiate_prefs, print_prefs.
(ira_destroy): Call finish_prefs.
* ira-color.c (struct update_cost_record): New.
(struct allocno_color_data): Add new member update_cost_records.
(update_cost_record_pool): New static var.
(init_update_cost_records, get_update_cost_record): New functions.
(free_update_cost_record_list, finish_update_cost_records): Ditto.
(struct update_cost_queue_elem): Add member from.
(initiate_cost_update): Call init_update_cost_records.
(finish_cost_update): Call finish_update_cost_records.
(queue_update_cost, get_next_update_cost): Add new param from.
(Update_allocno_cost, update_costs_from_allocno): New functions.
(update_costs_from_prefs): Ditto.
(update_copy_costs): Rename to update_costs_from_copies.
(restore_costs_from_copies): New function.
(update_conflict_hard_regno_costs): Don't go back.
(assign_hard_reg): Call restore_costs_from_copies. Add printing
more debug info.
(pop_allocnos): Add priniting more debug info.
(color_allocnos): Remove prefs for conflicting hard regs.
Call update_costs_from_prefs.
* ira-conflicts.c (commutative_constraint_p): Move to ira.c
(get_dup_num): Rename, modify, and move to ira.c
(process_regs_for_copy): Add prefs.
(add_insn_allocno_copies): Put src as first arg of
process_regs_for_copy. Remove dead code. Call ira_setup_alts.
* ira-costs.c (record_reg_classes): Modify and move code into
record_operands_costs.
(find_costs_and_classes): Create prefs for the hard reg of small
reg class.
(process_bb_node_for_hard_reg_moves): Add prefs.
2013-10-30 Vladimir Makarov <vmakarov@redhat.com>
* gcc.target/i386/fma_double_3.c: Use pattern for
scan-assembler-times instead of just one insn name.
* gcc.target/i386/fma_double_5.c: Ditto.
* gcc.target/i386/fma_float_3.c: Ditto.
* gcc.target/i386/fma_float_5.c: Ditto.
* gcc.target/i386/l_fma_double_1.c: Ditto.
* gcc.target/i386/l_fma_double_2.c: Ditto.
* gcc.target/i386/l_fma_double_3.c: Ditto.
* gcc.target/i386/l_fma_double_4.c: Ditto.
* gcc.target/i386/l_fma_double_5.c: Ditto.
* gcc.target/i386/l_fma_double_6.c: Ditto.
* gcc.target/i386/l_fma_float_1.c: Ditto.
* gcc.target/i386/l_fma_float_2.c: Ditto.
* gcc.target/i386/l_fma_float_3.c: Ditto.
* gcc.target/i386/l_fma_float_4.c: Ditto.
* gcc.target/i386/l_fma_float_5.c: Ditto.
* gcc.target/i386/l_fma_float_6.c: Ditto.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204212
138bc75d-0d04-0410-961f-82ee72b054a4
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Subject: [Bug c++/85097] New: ICE in doub
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Bug ID: 85097
Summary: ICE in doub
Product: gcc
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>From gcc-bugs-return-599435-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:20:36 2018
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Subject: [Bug target/85095] [6/7/8 Regression] worse code generated
Date: Tue, 27 Mar 2018 15:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
CC| |jakub at gcc dot gnu.org
Component|ipa |target
Target Milestone|--- |6.5
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is much more likely r230856 than Honza's change actually.
I'll have a look.
>From gcc-bugs-return-599437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:21:40 2018
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Subject: [Bug c++/85097] ICE in double parameter pack
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Boldizsár Palotás <boldizsar.palotas at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE in doub |ICE in double parameter
| |pack
--- Comment #1 from Boldizsár Palotás <boldizsar.palotas at gmail dot com> ---
// Code
template <typename A, typename B>
struct X {};
template <typename, typename... TOuter>
struct S
{
template <typename... TInner>
void function(X<TOuter, TInner>...)
{ }
};
void test_case() {
S<void, int> s;
s.function(X<int, short>());
}
// Reported error with -std=c++11 -Wall -Wextra -Wpedantic
<source>: In substitution of 'template<class ... TInner> void S<void,
int>::function<TInner ...>(X<TOuter, TInner>...) [with TInner = <missing>]':
<source>:14:31: required from here
<source>:14:31: internal compiler error: tree check: accessed elt 2 of tree_vec
with 1 elts in unify, at cp/pt.c:21107
s.function(X<int, short>());
^
mmap: Invalid argument
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
>From gcc-bugs-return-599436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:21:03 2018
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
Date: Tue, 27 Mar 2018 15:21:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Hmm, I don't have access to AVX512F hardware so I can't reproduce the runtime
failure.
The vector simplifications that my patch introduces look correct to me from
looking at the dumps.
I'm not very familiar with i386.md but the *movdi_internal pattern that
produces the vmovq that zeroes out the top of the z register doesn't seem to
represent that in RTL.
So GCC ends up loading a DImode register xmm20 but then stores it as a
V32HImode register, the zero-extending effects of the DImode load are not
represented at RTL.
Any ideas?
>From gcc-bugs-return-599438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:22:20 2018
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Subject: [Bug rtl-optimization/85096] [6/7/8 Regression] Unnecessary(?) MOV instructions for int128 addition
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
CC| |jakub at gcc dot gnu.org
Component|c |rtl-optimization
Target Milestone|--- |6.5
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe related to PR84757.
>From gcc-bugs-return-599439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:25:05 2018
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at redhat dot com,
| |ubizjak at gmail dot com
Target Milestone|--- |8.0
>From gcc-bugs-return-599440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:42:55 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 15:42:00 -0000
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--- Comment #12 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I can reproduce it with downloaded Debian's cc1plus, and for me -Wnonnull alone
is sufficient to cause diverging codegen. It diverges very early, in the
frontend: diff of .tu dumps starts with:
--- a/1/16795.cpp.001t.tu
+++ b/2/16795.cpp.001t.tu
@@ -110354,336 +110354,337 @@
@56158 bind_expr type: @27 body: @59125
@56159 cond_expr type: @27 op 0: @5106 op 1: @59126
op 2: @59127
-@56160 cleanup_point_expr type: @27 op 0: @59128
-@56161 convert_expr type: @27 op 0: @59129
-@56162 call_expr type: @109 fn : @59130 0 : @59131
- 1 : @59132
-@56163 expr_stmt type: @27 line: 732 expr: @59133
-@56164 cleanup_point_expr type: @109 op 0: @59134
+@56160 cond_expr type: @27 op 0: @5106 op 1: @59128
+ op 2: @59129
+@56161 convert_expr type: @27 op 0: @59130
+@56162 call_expr type: @109 fn : @59131 0 : @59132
+ 1 : @59133
+@56163 expr_stmt type: @27 line: 732 expr: @59134
+@56164 cleanup_point_expr type: @109 op 0: @59135
and .original diff has the following hunk:
@@ -17695,8 +17695,11 @@ return <retval> = __out;
<<cleanup_point <<< Unknown tree: expr_stmt
lmi_test::record_error () >>>>>;
}
- <<cleanup_point <<< Unknown tree: expr_stmt
+ if (0)
+ {
+ <<cleanup_point <<< Unknown tree: expr_stmt
lmi_test::record_error () >>>>>;
+ }
}
(in the diffs, plus-lines correspond to -Wnonnull added to command line)
>From gcc-bugs-return-599441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:44:46 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 testsuite/83462] [8 regression] c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
Date: Tue, 27 Mar 2018 15:44:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
I plan to fix the underlying problem (pr83543) for GCC 9. Until then, the only
way to avoid the test failures at this stage is to disable or xfail the tests
for the affected targets.
>From gcc-bugs-return-599443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:45:36 2018
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From: "john.salmon at deshaw dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/85098] New: undefined reference to std::regex::extended
Date: Tue, 27 Mar 2018 15:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85098
Bug ID: 85098
Summary: undefined reference to std::regex::extended
Product: gcc
Version: unknown
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When I compile with -std=c++11 or -std=c++14 and with -O0, I get this undefined
reference. With -std=c++17, there's no problem. With -O1 and higher, there's
no problem. Note that with -std=c++14 and 17, 'mu' is just plain-old
std::make_unique. To demonstrate the problem with -std=c++11, I had to define
"my own" make_unique.
drdws0134$ cat foo.cpp
#include <memory>
#include <regex>
#if __cplusplus >= 201402L
#define mu std::make_unique
#else
template <typename T, typename ... Args>
std::unique_ptr<T> mu(Args&& ... args){
return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}
#endif
auto re = mu<std::regex>("hello", std::regex::extended);
int main(int, char **){
return 0;
}
drdws0134$
drdws0134$ garden with -m gcc/7.3.0-01c7/bin g++ -std=c++11 -O0 foo.cpp
/tmp/ccJeBOid.o: In function `__static_initialization_and_destruction_0(int,
int)':
foo.cpp:(.text+0xd9): undefined reference to `std::__cxx11::basic_regex<char,
std::__cxx11::regex_traits<char> >::extended'
collect2: error: ld returned 1 exit status
drdws0134$ garden with -m gcc/7.3.0-01c7/bin g++ -std=c++14 -O0 foo.cpp
/tmp/cc2NKXJx.o: In function `__static_initialization_and_destruction_0(int,
int)':
foo.cpp:(.text+0xd9): undefined reference to `std::__cxx11::basic_regex<char,
std::__cxx11::regex_traits<char> >::extended'
collect2: error: ld returned 1 exit status
drdws0134$ garden with -m gcc/7.3.0-01c7/bin g++ -std=c++17 -O0 foo.cpp
drdws0134$
>From gcc-bugs-return-599442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 15:45:35 2018
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From: "boldizsar.palotas at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85097] ICE in double parameter pack
Date: Tue, 27 Mar 2018 15:45:00 -0000
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--- Comment #2 from Boldizsár Palotás <boldizsar.palotas at gmail dot com> ---
More specifically, this seems to fail on every version of GCC that supports
"-std=c++11" -- since 4.7.1, based on testing on Compiler Explorer. It is
compiled (I assume correctly) by Clang and MSVC.
A simplified version of the code is below:
template <typename A, typename B>
struct X {};
template <typename... TOuter> // Note the omitted bogus typename parameter
struct S
{
template <typename... TInner>
void function(X<TOuter, TInner>...)
{ }
};
void test_case() {
S<int> s; // Note the omitted void parameter
s.function(X<int, short>());
}
This seems to fail in the same situations, but instead of ICE, it gives the
following error:
<source>: In function 'void test_case()':
<source>:14:31: error: no matching function for call to
'S<int>::function(X<int, short int>)'
s.function(X<int, short>());
^
<source>:8:10: note: candidate: template<class ... TInner> void
S<TOuter>::function(X<TOuter, TInner>...) [with TInner = {TInner ...}; TOuter =
{int}]
void function(X<TOuter, TInner>...)
^~~~~~~~
<source>:8:10: note: template argument deduction/substitution failed:
<source>:14:31: note: mismatched types 'TInner' and 'short int'
s.function(X<int, short>());
^
The examples above can be checked here: https://godbolt.org/g/dNkjSk
This could be a duplicate of #84796 or #77731
>From gcc-bugs-return-599444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:03:25 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 c++/85068] [6/7 Regression] ICE with invalid covariant return type hierarchy
Date: Tue, 27 Mar 2018 16:03:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] ICE with |[6/7 Regression] ICE with
|invalid covariant return |invalid covariant return
|type hierarchy |type hierarchy
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-599445-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:06:07 2018
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
Date: Tue, 27 Mar 2018 16:06:00 -0000
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--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
The problem lies in:
(insn 4214 4213 4219 2 (parallel [
(set (subreg:DI (reg:V32HI 4037 [ i ]) 0)
(ior:DI (reg:DI 4040)
(reg:DI 4038 [ _7 ])))
(clobber (reg:CC 17 flags))
]) "pr85090.c":13 442 {*iordi_1}
(expr_list:REG_DEAD (reg:DI 4040)
(expr_list:REG_DEAD (reg:DI 4038 [ _7 ])
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))))
(insn 4219 4214 4220 2 (set (reg/i:V32HI 21 xmm0)
(reg:V32HI 4037 [ i ])) "pr85090.c":16 1254 {movv32hi_internal}
(expr_list:REG_DEAD (reg:V32HI 4037 [ i ])
where (insn 4214) reloads with:
(insn 4214 4213 5658 2 (parallel [
(set (reg:DI 0 ax [4040])
(ior:DI (reg:DI 0 ax [4040])
(reg:DI 1 dx [orig:4038 _7 ] [4038])))
(clobber (reg:CC 17 flags))
]) "pr85090.c":13 442 {*iordi_1}
(nil))
(insn 5658 4214 5812 2 (set (mem/c:DI (plus:DI (reg/f:DI 7 sp)
(const_int 264 [0x108])) [4 %sfp+-64 S8 A512])
(reg:DI 0 ax [4040])) "pr85090.c":13 85 {*movdi_internal}
(nil))
(insn 5812 5658 4219 2 (set (reg:DI 57 xmm20 [orig:422 i ] [422])
(mem/c:DI (plus:DI (reg/f:DI 7 sp)
(const_int 264 [0x108])) [4 %sfp+-64 S8 A512])) "pr85090.c":13
85 {*movdi_internal}
(nil))
(insn 4219 5812 4220 2 (set (reg/i:V32HI 21 xmm0)
(reg/v:V32HI 57 xmm20 [orig:422 i ] [422])) "pr85090.c":16 1254
{movv32hi_internal}
(nil))
Using a subreg is not enough to change only part of the register.
>From gcc-bugs-return-599446-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:09:44 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/83860] [6/7/8 Regression] valarray replacement type breaks with auto and more than one operation
Date: Tue, 27 Mar 2018 16:09:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Confirmed. Works with GCC 5
Well, it doesn't segfault, but ASan still shows the problem:
ASAN:SIGSEGV
=================================================================
==8343==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000018 (pc
0x0000004017e9 bp 0x7ffc01d53a90 sp 0x7ffc01d53a80 T0)
#0 0x4017e8 in std::valarray<int>::operator[](unsigned long) const
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/valarray:571
#1 0x401792 in std::_BinBase<std::__plus, std::valarray<int>,
std::valarray<int> >::operator[](unsigned long) const
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/bits/valarray_before.h:534
#2 0x4016b5 in std::_BinBase<std::__plus, std::_BinClos<std::__plus,
std::_ValArray, std::_ValArray, int, int>, std::valarray<int>
>::operator[](unsigned long) const
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/bits/valarray_before.h:534
#3 0x4015ea in std::_Expr<std::_BinClos<std::__plus, std::_Expr,
std::_ValArray, std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, int,
int>, int>, int>::operator[](unsigned long) const
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/bits/valarray_after.h:216
#4 0x4013fd in void std::__valarray_copy_construct<int,
std::_BinClos<std::__plus, std::_Expr, std::_ValArray,
std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, int, int>, int>
>(std::_Expr<std::_BinClos<std::__plus, std::_Expr, std::_ValArray,
std::_BinClos<std::__plus, std::_ValArray, std::_ValArray, int, int>, int>,
int> const&, unsigned long, std::_Array<int>)
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/bits/valarray_array.tcc:219
#5 0x4011a9 in std::valarray<int>::valarray<std::_BinClos<std::__plus,
std::_Expr, std::_ValArray, std::_BinClos<std::__plus, std::_ValArray,
std::_ValArray, int, int>, int> >(std::_Expr<std::_BinClos<std::__plus,
std::_Expr, std::_ValArray, std::_BinClos<std::__plus, std::_ValArray,
std::_ValArray, int, int>, int>, int> const&)
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/valarray:696
#6 0x400d1c in main /tmp/val.cc:6
#7 0x7f025472a889 in __libc_start_main (/lib64/libc.so.6+0x20889)
#8 0x400ae9 in _start (/tmp/val5+0x400ae9)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV
/home/jwakely/gcc/5.5.0/include/c++/5.5.0/valarray:571
std::valarray<int>::operator[](unsigned long) const
==8343==ABORTING
The root cause is that binary operators for valarray return expression
templates that have reference semantics, not value semantics. The result of
va+vb+vc refers to a temporary object that goes out of scope at the end of the
full expression. When that result is stored in a valarray it works OK:
std::valarray<int> sum = va + vb + vc;
but when you use 'auto' you get an object of the expression template type,
which holds a dangling reference to an expired temporary.
Solution: Don't use 'auto' with expression templates.
I'll see if there's anything the library can do to make this less error-prone.
>From gcc-bugs-return-599447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:10:21 2018
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 16:10:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The block
/* TODO: Call match_intent_spec from here. */
...
has been introduced at revision r128028, September 2 2007, by Roger Sayle, see
https://gcc.gnu.org/ml/fortran/2007-08/msg00655.html
>From gcc-bugs-return-599448-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:12:15 2018
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Tue, 27 Mar 2018 16:12:00 -0000
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--- Comment #37 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43771
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43771&action=edit
gcc8-pr82004.patch
Untested hack. With this it works even with -flto. Though, the rounding
errors because we do 400 multiplications get perhaps way too high even for
-Ofast (the benchmark doesn't care that much except for the first iteration,
but I think it is too much). So, as an alternative I'll just try to something
different.
>From gcc-bugs-return-599449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:15:03 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 16:15:00 -0000
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--- Comment #13 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
> (in the diffs, plus-lines correspond to -Wnonnull added to command line)
No, sorry, it was the other way around. Here's the reverse diff with more
context:
if (0)
{
<<cleanup_point <<< Unknown tree: expr_stmt
lmi_test::record_error () >>>>>;
}
- if (0)
- {
- <<cleanup_point <<< Unknown tree: expr_stmt
+ <<cleanup_point <<< Unknown tree: expr_stmt
lmi_test::record_error () >>>>>;
- }
}
It corresponds to
if(!(!std::signbit(bourn_cast<To>( From(0))))) { lmi_test::record_error();
};
if(!(std::signbit(bourn_cast<To>(-From(0))))) { lmi_test::record_error();
};
in template instantiation test_floating_conversions<double, float>.
Essentially, with -Wnonnull the second condition seems to be folded to truth
value.
>From gcc-bugs-return-599450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:30:39 2018
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 16:30:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
It seems that there is some inconsistencies between
/* TODO: Call match_intent_spec from here. */
if (gfc_match (" ( in out )") == MATCH_YES)
d = DECL_INOUT;
else if (gfc_match (" ( in )") == MATCH_YES)
d = DECL_IN;
else if (gfc_match (" ( out )") == MATCH_YES)
d = DECL_OUT;
and
match
gfc_match_intent (void)
{
sym_intent intent;
/* This is not allowed within a BLOCK construct! */
if (gfc_current_state () == COMP_BLOCK)
{
gfc_error ("INTENT is not allowed inside of BLOCK at %C");
return MATCH_ERROR;
}
intent = match_intent_spec ();
if (intent == INTENT_UNKNOWN)
return MATCH_ERROR;
gfc_clear_attr (¤t_attr);
current_attr.intent = intent;
return attr_decl ();
}
and
static sym_intent
match_intent_spec (void)
{
if (gfc_match (" ( in out )") == MATCH_YES)
return INTENT_INOUT;
if (gfc_match (" ( in )") == MATCH_YES)
return INTENT_IN;
if (gfc_match (" ( out )") == MATCH_YES)
return INTENT_OUT;
gfc_error ("Bad INTENT specification at %C");
return INTENT_UNKNOWN;
}
>From gcc-bugs-return-599451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:42:09 2018
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Subject: [Bug rtl-optimization/85099] New: [meta-bug] selective scheduling issues
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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Mathieu Malaterre <mathieu.malaterre at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mathieu.malaterre at gmail dot com
--- Comment #14 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> ---
Created attachment 43772
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valgrind output (ok)
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #15 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> ---
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valgrind output (not ok)
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #16 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Alexander Monakov from comment #13)
> It corresponds to
>
> if(!(!std::signbit(bourn_cast<To>( From(0))))) {
> lmi_test::record_error(); };
> if(!(std::signbit(bourn_cast<To>(-From(0))))) {
> lmi_test::record_error(); };
>
> in template instantiation test_floating_conversions<double, float>.
> Essentially, with -Wnonnull the second condition seems to be folded to truth
> value.
This is reassuring because this pinpoints the problem I had had originally: the
unit test failed because the signbit() check didn't pass. I thought this wasn't
relevant as the difference in the generated code (i.e. "lock addl $0x1,0x4c"
instead of "xor %eax, %eax") didn't seem to be related to it, but apparently it
still is.
And I can also confirm that -Wnonnull is sufficient for the output to change
with the final test case. It wasn't for the original program, but apparently
delta simplified things enough for -Woverloaded-virtual to become unnecessary
at some point (would it be important to find when? If so, I could try doing
this...).
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From: "mathieu.malaterre at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 16:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #17 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> ---
Here is what I did over here:
# debootstrap --arch amd64 sid /srv/chroot/sid-amd64
http://httpredir.debian.org/debian
# mount -t proc proc /srv/chroot/sid-amd64/proc
# chroot /srv/chroot/sid-amd64 apt install g++-mingw-w64-i686
Then (https://wiki.debian.org/AutomaticDebugPackages):
#Â apt install g++-mingw-w64-i686-dbgsym
And eventually ran valgrind on both:
# valgrind --trace-children=yes i686-w64-mingw32-g++ -c -std=c++17 -O2
-Wnonnull -Woverloaded-virtual -v tmp1/16795.cpp -o warn.o >& /tmp/ok
# valgrind --trace-children=yes i686-w64-mingw32-g++ -c -std=c++17 -O2
-Wnonnull -Woverloaded-virtual -v 16795.cpp -o warn.o >& /tmp/notok
The valgrind output seems rather different, so I suspect the issue is indeed an
invalid read/write which should be somewhere in the diff of ok vs notok.
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Subject: [Bug target/67297] PowerPC does not support all vector interfaces from the ELFv2 1.1 ABI
Date: Tue, 27 Mar 2018 16:52:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Carl Love and Will Schmidt have ensured the built-in support is now up to date.
Closing.
>From gcc-bugs-return-599456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:52:01 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 16:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #18 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> ---
The first diff seems to be here:
+Use of uninitialised value of size 8
+ at 0x98CBD7: sparseset_bit_p (sparseset.h:147)
+ by 0x98CBD7: process_bb_node_lives(ira_loop_tree_node*) (ira-lives.c:1226)
+ by 0x97189E: ira_traverse_loop_tree(bool, ira_loop_tree_node*, void
(*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (ira-build.c:1806)
+ by 0x98D231: ira_create_allocno_live_ranges() (ira-lives.c:1564)
+ by 0x97345C: ira_build() (ira-build.c:3422)
+ by 0x96ACCB: ira (ira.c:5308)
+ by 0x96ACCB: (anonymous namespace)::pass_ira::execute(function*)
(ira.c:5619)
+ by 0xA30676: execute_one_pass(opt_pass*) (passes.c:2465)
+ by 0xA30E80: execute_pass_list_1(opt_pass*) (passes.c:2554)
+ by 0xA30E92: execute_pass_list_1(opt_pass*) (passes.c:2555)
+ by 0xA30ED4: execute_pass_list(function*, opt_pass*) (passes.c:2565)
+ by 0x7ABC51: cgraph_node::expand() (cgraphunit.c:2042)
+ by 0x7ACFF8: expand_all_functions (cgraphunit.c:2178)
+ by 0x7ACFF8: symbol_table::compile() [clone .part.50] (cgraphunit.c:2536)
+ by 0x7AECE6: compile (cgraphunit.c:2629)
+ by 0x7AECE6: symbol_table::finalize_compilation_unit() (cgraphunit.c:2626)
>From gcc-bugs-return-599458-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:52:46 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83009] [8 regression] gcc.target/aarch64/store_v2vec_lanes.c fails with -mabi=ilp32
Date: Tue, 27 Mar 2018 16:52:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Mar 27 16:52:10 2018
New Revision: 258894
URL: https://gcc.gnu.org/viewcvs?rev=258894&root=gcc&view=rev
Log:
[AArch64] XFAIL gcc.target/aarch64/store_v2vec_lanes.c for ILP32
The test in question fails for ilp32. The initial analysis I did in the PR for
it
is that for ILP32 we generate somewhat different address forms that we'd need
to adjust aarch64_classify_address to catch.
Given the optimisation this test checks for was added for GCC 8 it is not a
regression, and improving the codegen on ILP32
would be an enhancement rather than a fix. So Richi has asked for it to be
marked as XFAIL on ILP32, which is what this
patch does.
Checked that the test still passes on LP64 and appears as XFAIL on -mabi=ilp32.
PR target/83009
* gcc.target/aarch64/store_v2vec_lanes.c: XFAIL for ilp32.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/aarch64/store_v2vec_lanes.c
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Subject: [Bug target/83009] gcc.target/aarch64/store_v2vec_lanes.c fails with -mabi=ilp32
Date: Tue, 27 Mar 2018 16:54:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P3
Target Milestone|8.0 |9.0
Summary|[8 regression] |gcc.target/aarch64/store_v2
|gcc.target/aarch64/store_v2 |vec_lanes.c fails with
|vec_lanes.c fails with |-mabi=ilp32
|-mabi=ilp32 |
--- Comment #4 from ktkachov at gcc dot gnu.org ---
Test is XFAILed.
Codegen improvement for ILP32 is not a blocker for GCC 8
>From gcc-bugs-return-599460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 16:55:32 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 16:55:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #19 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Mathieu Malaterre from comment #18)
> The first diff seems to be here:
>
> +Use of uninitialised value of size 8
> + at 0x98CBD7: sparseset_bit_p (sparseset.h:147)
> + by 0x98CBD7: process_bb_node_lives(ira_loop_tree_node*)
> (ira-lives.c:1226)
> + by 0x97189E: ira_traverse_loop_tree(bool, ira_loop_tree_node*, void
> (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (ira-build.c:1806)
> + by 0x98D231: ira_create_allocno_live_ranges() (ira-lives.c:1564)
> + by 0x97345C: ira_build() (ira-build.c:3422)
> + by 0x96ACCB: ira (ira.c:5308)
> + by 0x96ACCB: (anonymous namespace)::pass_ira::execute(function*)
> (ira.c:5619)
> + by 0xA30676: execute_one_pass(opt_pass*) (passes.c:2465)
> + by 0xA30E80: execute_pass_list_1(opt_pass*) (passes.c:2554)
> + by 0xA30E92: execute_pass_list_1(opt_pass*) (passes.c:2555)
> + by 0xA30ED4: execute_pass_list(function*, opt_pass*) (passes.c:2565)
> + by 0x7ABC51: cgraph_node::expand() (cgraphunit.c:2042)
> + by 0x7ACFF8: expand_all_functions (cgraphunit.c:2178)
> + by 0x7ACFF8: symbol_table::compile() [clone .part.50] (cgraphunit.c:2536)
> + by 0x7AECE6: compile (cgraphunit.c:2629)
> + by 0x7AECE6: symbol_table::finalize_compilation_unit()
> (cgraphunit.c:2626)
This should be fine, please take a look here:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78454
>From gcc-bugs-return-599461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 17:05:08 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #20 from Mathieu Malaterre <mathieu.malaterre at gmail dot com> ---
(In reply to Martin Liška from comment #19)
> (In reply to Mathieu Malaterre from comment #18)
> > The first diff seems to be here:
> >
> > +Use of uninitialised value of size 8
> > + at 0x98CBD7: sparseset_bit_p (sparseset.h:147)
> > + by 0x98CBD7: process_bb_node_lives(ira_loop_tree_node*)
> > (ira-lives.c:1226)
> > + by 0x97189E: ira_traverse_loop_tree(bool, ira_loop_tree_node*, void
> > (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (ira-build.c:1806)
> > + by 0x98D231: ira_create_allocno_live_ranges() (ira-lives.c:1564)
> > + by 0x97345C: ira_build() (ira-build.c:3422)
> > + by 0x96ACCB: ira (ira.c:5308)
> > + by 0x96ACCB: (anonymous namespace)::pass_ira::execute(function*)
> > (ira.c:5619)
> > + by 0xA30676: execute_one_pass(opt_pass*) (passes.c:2465)
> > + by 0xA30E80: execute_pass_list_1(opt_pass*) (passes.c:2554)
> > + by 0xA30E92: execute_pass_list_1(opt_pass*) (passes.c:2555)
> > + by 0xA30ED4: execute_pass_list(function*, opt_pass*) (passes.c:2565)
> > + by 0x7ABC51: cgraph_node::expand() (cgraphunit.c:2042)
> > + by 0x7ACFF8: expand_all_functions (cgraphunit.c:2178)
> > + by 0x7ACFF8: symbol_table::compile() [clone .part.50] (cgraphunit.c:2536)
> > + by 0x7AECE6: compile (cgraphunit.c:2629)
> > + by 0x7AECE6: symbol_table::finalize_compilation_unit()
> > (cgraphunit.c:2626)
>
> This should be fine, please take a look here:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78454
Ooops :( Sorry false alarm. So I meant to say "This must be somewhere before
[insert block quote]".
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #21 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 43774
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Reduced test case showing the problem with native g++ 7.3
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #22 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 43775
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Compressed preprocessed test case for native Linux gcc 7.3
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Tue, 27 Mar 2018 17:08:00 -0000
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--- Comment #38 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43776
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43776&action=edit
gcc8-pr82004.patch
Variant fix, instead of trying to optimize it some way (which is even less
precise than what we do right now), this just reverts to GCC 7 behavior if we
detect a SPEC2k17-like pow call. If/once glibc has a fast exp10, we can use
exp10 in that case instead of leaving pow around.
>From gcc-bugs-return-599465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 17:09:18 2018
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Subject: [Bug testsuite/83462] [8 regression] c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
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--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Mar 27 17:08:41 2018
New Revision: 258896
URL: https://gcc.gnu.org/viewcvs?rev=258896&root=gcc&view=rev
Log:
PR testsuite/83462 - c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
gcc/testsuite/ChangeLog:
* c-c++-common/Warray-bounds-4.c: Disable assertion for targets
other than x86.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/Warray-bounds-4.c
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Subject: [Bug c++/84733] [8 Regression] internal compiler error: Segmentation fault (check_local_shadow())
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |error-recovery
Priority|P1 |P4
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
After the change this is only error-recovery it seems, so P4.
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 17:14:00 -0000
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--- Comment #23 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Just to confirm that this is not specific to MinGW-w64, I've attached the test
case (and a preprocessed version of it) allowing to reproduce the same problem
with Linux x86_64 version of g++ 7.3 (7.3.0-12 from Debian/Sid).
Unlike the other test case, this one really requires both -Wnonnull and
-Woverloaded-virtual to be specified to see the problem, so the commands to use
are (I also switched to assembly because I figured this was simpler to compare
than disassembling object files, but this is not significant):
% g++-7 -S -std=c++17 -O2 gcc-7.3-x86_64-linux.cpp -o nowarn.s
% g++-7 -S -std=c++17 -O2 gcc-7.3-x86_64-linux.cpp -Wnonnull
-Woverloaded-virtual -o warn.s
% diff -u nowarn.s warn.s|head
--- nowarn.s 2018-03-27 17:11:31.841485730 +0000
+++ warn.s 2018-03-27 17:11:41.961553404 +0000
@@ -616,17 +616,15 @@
.LEHB19:
call
_ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l@PLT
.LEHE19:
-.L89:
- lock addl $1, _ZN8lmi_test4test20test_tools_successesE(%rip)
popq %rbx
.cfi_remember_state
("head" is used because there are plenty of other insignificant differences due
to the labels renumbering later).
Please let me know if I can do anything else.
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Subject: [Bug testsuite/83462] [8 regression] c-c++-common/Warray-bounds-3.c fails on arm-none-eabi
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Martin Sebor <msebor at gcc dot gnu.org> ---
The failures should be gone with r258896.
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Subject: [Bug target/85044] ENDBR is missing in ix86_trampoline_init
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--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Tue Mar 27 17:18:51 2018
New Revision: 258897
URL: https://gcc.gnu.org/viewcvs?rev=258897&root=gcc&view=rev
Log:
i386: Insert ENDBR to trampoline for -fcf-protection=branch -mibt
When -fcf-protection=branch -mibt are used, we need to insert ENDBR
to trampoline. TRAMPOLINE_SIZE is creased by 4 bytes to accommodate
4-byte ENDBR instruction.
gcc/
PR target/85044
* config/i386/i386.c (ix86_trampoline_init): Insert ENDBR for
-fcf-protection=branch -mibt.
* config/i386/i386.h (TRAMPOLINE_SIZE): Increased by 4 bytes.
gcc/testsuite/
PR target/85044
* gcc.target/i386/pr85044.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr85044.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/81652] [meta-bug] -fcf-protection=full -mcet bugs
Date: Tue, 27 Mar 2018 17:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81652
Bug 81652 depends on bug 85044, which changed state.
Bug 85044 Summary: ENDBR is missing in ix86_trampoline_init
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85044
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug target/85044] ENDBR is missing in ix86_trampoline_init
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 8.
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #24 from Martin Liška <marxin at gcc dot gnu.org> ---
> Please let me know if I can do anything else.
Can you please attach full diff? Am I correct that your native compiler is on
x86_64? Please attach output of --verbose.
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Subject: [Bug target/84514] powerpc sub optimal condition register reuse with extended inline asm
Date: Tue, 27 Mar 2018 17:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84514
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc-*-* |powerpc*-*-*
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
If you do not use a volatile asm (it has no outputs so it is always volatile),
you get:
(replace the asm with
long dum;
asm("#asm input register %0" : "=r"(dum) : "r"(lr));
):
cmpdi 7,3,5
bnelr 7
addis 8,2,.LC0@toc@ha
ld 8,.LC0@toc@l(8)
addis 9,2,.LC1@toc@ha
ld 9,.LC1@toc@l(9)
#APP
# 7 "84514.c" 1
mflr 7
# 0 "" 2
# 16 "84514.c" 1
mfctr 10
# 0 "" 2
#NO_APP
std 7,0(8)
std 10,0(9)
blr
so everything is fine then. The difference already happens at tree level,
many things do not know how to optimise in the presence of volatile asm.
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Tue, 27 Mar 2018 17:29:00 -0000
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Mar 27 17:28:35 2018
New Revision: 258899
URL: https://gcc.gnu.org/viewcvs?rev=258899&root=gcc&view=rev
Log:
2018-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
Harald Anlauf <anlauf@gmx.de>
PR fortran/85083
* primary.c (gfc_convert_to_structure_constructor): Check
conformance of argument types in structure constructor.
2018-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
Harald Anlauf <anlauf@gmx.de>
* gfortran.dg/structure_constructor_15.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/structure_constructor_15.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/primary.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #25 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Martin Liška from comment #24)
> > Please let me know if I can do anything else.
>
> Can you please attach full diff?
Sorry, diff between what and what?
> Am I correct that your native compiler is on x86_64?
Yes.
> Please attach output of --verbose.
Here it is:
% g++-7 --verbose -S -std=c++17 -O2 -Wnonnull -Woverloaded-virtual
gcc-7.3-x86_64-linux.cpp -o warn.s
Using built-in specs.
COLLECT_GCC=g++-7
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 7.3.0-12'
--with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Debian 7.3.0-12)
COLLECT_GCC_OPTIONS='-v' '-S' '-std=c++1z' '-O2' '-Wnonnull'
'-Woverloaded-virtual' '-o' 'warn.s' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/7/cc1plus -quiet -v -imultiarch x86_64-linux-gnu
-D_GNU_SOURCE 14881.cpp -quiet -dumpbase 14881.cpp -mtune=generic -march=x86-64
-auxbase-strip warn.s -O2 -Wnonnull -Woverloaded-virtual -std=c++1z -version -o
warn.s
GNU C++14 (Debian 7.3.0-12) version 7.3.0 (x86_64-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/7"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/7/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/7
/usr/include/x86_64-linux-gnu/c++/7
/usr/include/c++/7/backward
/usr/lib/gcc/x86_64-linux-gnu/7/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/7/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C++14 (Debian 7.3.0-12) version 7.3.0 (x86_64-linux-gnu)
compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 6054b92b0b90c9db1f26de9c9b53361c
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-S' '-std=c++1z' '-O2' '-Wnonnull'
'-Woverloaded-virtual' '-o' 'warn.s' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Tue, 27 Mar 2018 17:33:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk, closing.
>From gcc-bugs-return-599477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 17:36:41 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 17:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #26 from Martin Liška <marxin at gcc dot gnu.org> ---
complete output of:
diff -u nowarn.s warn.s
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
Date: Tue, 27 Mar 2018 17:38:00 -0000
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I cannot reproduce this on my system.
However, could you check if
Index: frontend-passes.c
===================================================================
--- frontend-passes.c (revision 258845)
+++ frontend-passes.c (working copy)
@@ -156,6 +156,10 @@
check_locus (ns);
#endif
+ gfc_get_errors (&w, &e);
+ if (e > 0)
+ return;
+
if (flag_frontend_optimize || flag_frontend_loop_interchange)
optimize_namespace (ns);
@@ -168,10 +172,6 @@
expr_array.release ();
}
- gfc_get_errors (&w, &e);
- if (e > 0)
- return;
-
if (flag_realloc_lhs)
realloc_strings (ns);
would fix this? There is no sense in running any sort of
front-end optimization if the program has errors...
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 17:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85091
--- Comment #27 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 43777
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43777&action=edit
Diff between assembly generated with and without the warning options
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/84780] [8 Regression] wrong code aarch64 with -O3 --param=tree-reassoc-width2
Date: Tue, 27 Mar 2018 17:39:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Patch for the original problem went in as r258452:
(I accidentally deleted the changelog from the commit message, so BZ didn't
pick this up).
combine: Fix PR84780 (more LOG_LINKS trouble)
There still are situations where we have stale LOG_LINKS. This causes
combine to try two-insn combinations I2->I3 where the register set by
I2 is used before I3 as well. Not good.
This patch fixes it by checking for this situation in can_combine_p
(similar to what we already do for three and four insn combinations).
Patch for #c10 went in as r258523.
combine: Don't make log_links for pc_rtx (PR84780 #c10)
distribute_links tries to place a log_link for whatever the destination
of the modified instruction is. It shouldn't do that when that dest
is pc_rtx, which isn't actually a register.
* combine.c (distribute_links): Don't make a link based on pc_rtx.
Closing as fixed.
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #28 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Martin Liška from comment #26)
> complete output of:
> diff -u nowarn.s warn.s
Attached, but most of it is just noise from the label renumbering due to the
extra label being created, as previously mentioned.
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #2)
> I cannot reproduce this on my system.
Actually, I can.
Let's see how this survives regression-testing.
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Subject: [Bug target/85095] [6/7/8 Regression] worse code generated
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43778
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43778&action=edit
gcc8-pr85095.patch
Untested fix. What happens is that combine uses simplify-rtx.c which optimizes
away the useless outer (plus with const0_rtx), and we don't have a pattern that
matches that.
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Subject: [Bug sanitizer/85081] [7/8 Regression] Sanitizer error with references in vectorized/parallel for-loop
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-27
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Martin, this is because of:
/* When within an OMP context, do not emit ASAN_MARK internal fns. */
if (gimplify_omp_ctxp)
return;
in asan_poison_variable. Not really sure why exactly it has been added, but if
we can't emit the ASAN_UNPOISON, we can't emit the corresponding ASAN_POISON
either.
So something like:
--- gcc/gimplify.c.jj 2018-03-16 13:43:14.831910333 +0100
+++ gcc/gimplify.c 2018-03-27 20:11:27.680195380 +0200
@@ -1689,7 +1689,8 @@ gimplify_decl_expr (tree *stmt_p, gimple
&& !TREE_STATIC (decl)
&& !DECL_HAS_VALUE_EXPR_P (decl)
&& DECL_ALIGN (decl) <= MAX_SUPPORTED_STACK_ALIGNMENT
- && dbg_cnt (asan_use_after_scope))
+ && dbg_cnt (asan_use_after_scope)
+ && !gimplify_omp_ctxp)
{
asan_poisoned_variables->add (decl);
asan_poison_variable (decl, false, seq_p);
@@ -6614,7 +6615,8 @@ gimplify_target_expr (tree *expr_p, gimp
}
if (asan_poisoned_variables
&& DECL_ALIGN (temp) <= MAX_SUPPORTED_STACK_ALIGNMENT
- && dbg_cnt (asan_use_after_scope))
+ && dbg_cnt (asan_use_after_scope)
+ && !gimplify_omp_ctxp)
{
tree asan_cleanup = build_asan_poison_call_expr (temp);
if (asan_cleanup)
fixes it from me, but not really sure about the reasons why the above check is
in there. Martin?
>From gcc-bugs-return-599486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 18:42:39 2018
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
Date: Tue, 27 Mar 2018 18:42:00 -0000
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Mar 27 18:42:02 2018
New Revision: 258900
URL: https://gcc.gnu.org/viewcvs?rev=258900&root=gcc&view=rev
Log:
2018-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
* frontend-passes.c (gfc_run_passes): Do not run front-end
optimizations if a previous error occurred.
2018-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
* gfortran.dg/matmul_rank_1.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/matmul_rank_1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/frontend-passes.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 18:49:54 2018
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Subject: [Bug sanitizer/85081] [7/8 Regression] Sanitizer error with references in vectorized/parallel for-loop
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I'll take a look tomorrow.
>From gcc-bugs-return-599488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 18:54:42 2018
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Subject: [Bug target/85100] New: __builtin_cpu_supports avx does not verify OS supports it
Date: Tue, 27 Mar 2018 18:54:00 -0000
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Bug ID: 85100
Summary: __builtin_cpu_supports avx does not verify OS supports
it
Product: gcc
Version: unknown
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__builtin_cpu_supports("avx") checks that the cpu supports avx instructions,
but without OS support the instructions cannot be used.
To reproduce launch linux with the noxsave boot option. The function will
return nonzero as the feature is there but programs using avx will crash with
SIGILL.
This makes this function significantly less useful as you need to add
additional checks (using xgetbv) to verify operating system support.
At least this behavior it should be more clearly documented. Not everybody is
aware the operating system may not support or that you can disable it in linux
with a boot option.
>From gcc-bugs-return-599489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:05:44 2018
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 19:05:00 -0000
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--- Comment #29 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks. I can't reproduce that on my openSUSE package nor on my build
gcc-7-branch. However I downloaded Debian binary and I can confirm that.
I'm bisecting now...
>From gcc-bugs-return-599490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:09:23 2018
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Subject: [Bug c++/85101] New: C++17 ICE in build_over_call, at cp/call.c:8149
Date: Tue, 27 Mar 2018 19:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85101
Bug ID: 85101
Summary: C++17 ICE in build_over_call, at cp/call.c:8149
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
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Today's gcc source from git. C++17 and C++2a are affected, C++14 is not. I was
able to compile that code with the latest (at the time) gcc snapshot about a
month ago, so it's probably a recent regression. gcc 7.3.1 can compile the
code.
Fedora 27 x86_64, all up-to-date, gcc compiled from git and installed to
/opt/gcc
$ /opt/gcc/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/roskinp/src/gcc/configure --enable-languages=c++
--disable-multilib --prefix=/opt/gcc : (reconfigured)
/home/roskinp/src/gcc/configure --enable-languages=c++ --disable-multilib
--prefix=/opt/gcc : (reconfigured) /home/roskinp/src/gcc/configure
--enable-languages=c++ --disable-multilib --prefix=/opt/gcc : (reconfigured)
/home/roskinp/src/gcc/configure --enable-languages=c++ --disable-multilib
--prefix=/opt/gcc : (reconfigured) /home/roskinp/src/gcc/configure
--enable-languages=c++ --disable-multilib --prefix=/opt/gcc : (reconfigured)
/home/roskinp/src/gcc/configure --enable-languages=c++ --disable-multilib
--prefix=/opt/gcc
Thread model: posix
gcc version 8.0.1 20180327 (experimental) (GCC)
$ /opt/gcc/bin/g++ -c Chrono.ii -std=c++17
/home/roskinp/chrono/Source/Utility/Chrono.cpp: In function
‘std::__cxx11::string VG::Utility::to_string(VG::Utility::Milliseconds)’:
/home/roskinp/chrono/Source/Utility/Chrono.cpp:63:73: internal compiler error:
in build_over_call, at cp/call.c:8149
"00" + to_string(milliseconds.count() % milliseconds::period::den)};
^
0x5a84d1 build_over_call
/home/roskinp/src/gcc/gcc/cp/call.c:8143
0x7fa263 build_new_method_call_1
/home/roskinp/src/gcc/gcc/cp/call.c:9363
0x7fa263 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/home/roskinp/src/gcc/gcc/cp/call.c:9438
0x7fadc3 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/home/roskinp/src/gcc/gcc/cp/call.c:8966
0x8a99e3 expand_default_init
/home/roskinp/src/gcc/gcc/cp/init.c:1887
0x8a99e3 expand_aggr_init_1
/home/roskinp/src/gcc/gcc/cp/init.c:2002
0x8aa349 build_aggr_init(tree_node*, tree_node*, int, int)
/home/roskinp/src/gcc/gcc/cp/init.c:1742
0x85eebf build_aggr_init_full_exprs
/home/roskinp/src/gcc/gcc/cp/decl.c:6273
0x85eebf check_initializer
/home/roskinp/src/gcc/gcc/cp/decl.c:6422
0x876cbc cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
/home/roskinp/src/gcc/gcc/cp/decl.c:7127
0x91331b cp_parser_init_declarator
/home/roskinp/src/gcc/gcc/cp/parser.c:19741
0x91a788 cp_parser_simple_declaration
/home/roskinp/src/gcc/gcc/cp/parser.c:13059
0x91b598 cp_parser_block_declaration
/home/roskinp/src/gcc/gcc/cp/parser.c:12884
0x91bfc9 cp_parser_declaration_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:12478
0x8fa533 cp_parser_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:10927
0x8fb4a0 cp_parser_statement_seq_opt
/home/roskinp/src/gcc/gcc/cp/parser.c:11276
0x8fb577 cp_parser_compound_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:11230
0x91c615 cp_parser_implicitly_scoped_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:12533
0x8fae5a cp_parser_selection_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:11416
0x8fae5a cp_parser_statement
/home/roskinp/src/gcc/gcc/cp/parser.c:10818
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Subject: [Bug c++/85101] C++17 ICE in build_over_call, at cp/call.c:8149
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Created attachment 43779
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43779&action=edit
Preprocessed source
>From gcc-bugs-return-599492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:17:33 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85102] New: ICE in gfc_conv_intrinsic_dot_product, at fortran/trans-intrinsic.c:4464
Date: Tue, 27 Mar 2018 19:17:00 -0000
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Bug ID: 85102
Summary: ICE in gfc_conv_intrinsic_dot_product, at
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Product: gcc
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Follow-up of pr83998, but gives an ICE down to at least 4.8 :
$ cat z1.f90
program p
integer, parameter :: a((2)) = 1
integer, parameter :: b = dot_product(a, a)
print *, b
end
$ cat z2.f90
program p
integer, parameter :: a((0)) = 1
integer, parameter :: b = dot_product(a, a)
print *, b
end
$ gfortran-8-20180325 -c z1.f90
z1.f90:4:0:
print *, b
internal compiler error: in gfc_conv_intrinsic_dot_product, at
fortran/trans-intrinsic.c:4464
0x78a94d gfc_conv_intrinsic_dot_product
../../gcc/fortran/trans-intrinsic.c:4464
0x79e0ba gfc_conv_intrinsic_function(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-intrinsic.c:9057
0x77db95 gfc_conv_function_expr
../../gcc/fortran/trans-expr.c:6788
0x77e132 gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-expr.c:7922
0x784858 gfc_conv_expr_reference(gfc_se*, gfc_expr*)
../../gcc/fortran/trans-expr.c:8057
0x7a4646 gfc_trans_transfer(gfc_code*)
../../gcc/fortran/trans-io.c:2585
0x74a487 trans_code
../../gcc/fortran/trans.c:2044
0x7a20f7 build_dt
../../gcc/fortran/trans-io.c:2027
0x74a4a7 trans_code
../../gcc/fortran/trans.c:2016
0x771a79 gfc_generate_function_code(gfc_namespace*)
../../gcc/fortran/trans-decl.c:6507
0x700cc0 translate_all_program_units
../../gcc/fortran/parse.c:6121
0x700cc0 gfc_parse_file()
../../gcc/fortran/parse.c:6324
0x74791f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-599493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:21:35 2018
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
Date: Tue, 27 Mar 2018 19:21:00 -0000
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--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #4)
> It seems that there is some inconsistencies
Right, in particular regarding INTENT_INOUT vs DECL_INOUT etc. Therefore the
patch in comment #2 is much too naive (and produces a huge amount of
regressions).
However, the following works well (and is free of regressions):
Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c (revision 258893)
+++ gcc/fortran/decl.c (working copy)
@@ -4811,6 +4811,8 @@ match_attr_spec (void)
d = DECL_IN;
else if (gfc_match (" ( out )") == MATCH_YES)
d = DECL_OUT;
+ else
+ gfc_error ("Bad INTENT specification at %C");
}
}
else if (ch == 'r')
With this ones gets the following:
c0.f90:2:18:
integer, intent(int) :: x
1
Error: Bad INTENT specification at (1)
c0.f90:3:18:
integer, intent :: y
1
Error: Bad INTENT specification at (1)
c0.f90:4:11:
integer, inten :: z
1
Error: Invalid character in name at (1)
>From gcc-bugs-return-599494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:23:59 2018
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Subject: [Bug c++/85043] -Wuseless-cast false positive for temporary objects
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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 #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
It sounds like the report is not about the documentation but about the term
"useless" in the text of the warning. Useless implies the cast serves no
useful purpose which is not true in the test case. If we wanted to go by the
documentation then the warning should say something like "object cast to its
own type" but I don't think that would be helpful or reflect the intended
purpose of the warning: to point out casts that do, in fact, serve no useful
purpose. I would think that changing both when the warning is issued and how
it's documented is the appropriate solution.
That said, I don't think the distinction between class types and non-class
types is essential. The warning also triggers for casts that create a
(temporary) rvalue from an lvalue, as in:
extern int i;
const int &r = (int)i; // bogus -Wuseless-cast
even though these casts are also not useless. (Ditto when i itself is a
reference.)
Fixing this shouldn't require introducing levels.
>From gcc-bugs-return-599495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:37:02 2018
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Subject: [Bug c++/85043] -Wuseless-cast false positive for temporary objects
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|paolo.carlini at oracle dot com |
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Martin, my point in the previous comment was simple: it's been a while since I
implemented the warning and today it finally occurred to me that I really
intended to implement a very simple warning for cast to its own type, as
consistently documented. Unfortunately the name is misleading. Personally, I
don't have any short/mid term plans to implement something much more complex
and sophisticated which goes beyond that. I'm pretty confident that will not
cause major problems to anybody because the warning isn't part of any set
enabled by default (if I'm misremembering that should definitely be changed).
Also, I would personally not object if somebody wants to deprecate the name of
the current warning, rename it to something really straightforward matching the
docs and then proceed to implement under "useless" something doing "the right
thing".
>From gcc-bugs-return-599496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:38:20 2018
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Subject: [Bug c++/85079] Segfault While Compiling DXX-Rebirth Project
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--- Comment #2 from John Ackerman <afuturepilotis at gmail dot com> ---
Created attachment 43780
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43780&action=edit
Prepocessed Source
>From gcc-bugs-return-599498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:39:51 2018
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Subject: [Bug c++/85043] -Wuseless-cast false positive for temporary objects
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--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Paolo Carlini from comment #2)
> Thanks. I'm seriously wondering if this is also a problem with the name of
> the warning, because, I suppose, the same warning named
> -Wcast-to-the-same-type would generate different expectations in terms of
> false positives, etc, right?
Instead of renaming -Wuseless-cast to -Wcast-to-the-same-type how about
splitting the 2 into separate warnings? -Wuseless-cast for actually useless
ones and -Wcast-to-the-same-type for ones that are just to the same type but
not necessarily useless. That's kind of the same as adding levels, but
addresses some of my usual complaints about numerical warnings levels, such as
having them be separately controllable.
>From gcc-bugs-return-599497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 19:39:11 2018
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--- Comment #3 from John Ackerman <afuturepilotis at gmail dot com> ---
I thought I had attached it, but apparently the file was too big. It's now
attached. Let me know if you need anything else!
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Subject: [Bug fortran/85083] [8 Regression] ICE in gfc_convert_to_structure_constructor, at fortran/primary.c:2915
Date: Tue, 27 Mar 2018 19:46:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |pault at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Hi Thomas - I have closed it for you :-)
Paul
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--- Comment #11 from Paolo Carlini <paolo.carlini at oracle dot com> ---
That approach would be definitely Ok with me, Eric.
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Subject: [Bug c++/85076] [6/7/8 Regression] ICE with invalid template used as lambda argument
Date: Tue, 27 Mar 2018 19:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85076
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 27 19:58:30 2018
New Revision: 258901
URL: https://gcc.gnu.org/viewcvs?rev=258901&root=gcc&view=rev
Log:
PR c++/85076
* tree.c (cp_build_reference_type): If to_type is error_mark_node,
return it right away.
* g++.dg/cpp1y/pr85076.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/pr85076.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/tree.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85061] ICE with __builtin_offsetof applied to static member
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85061
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 27 19:59:30 2018
New Revision: 258902
URL: https://gcc.gnu.org/viewcvs?rev=258902&root=gcc&view=rev
Log:
PR c++/85061
* c-common.c (fold_offsetof_1) <case COMPOUND_EXPR>: Assert that
get_base_address of the second operand is a VAR_P, rather than the
operand itself, and use gcc_checking_assert instead of gcc_assert.
* g++.dg/ext/builtin-offsetof3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/builtin-offsetof3.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85077] [8 Regression] V[248][SD]F abs not optimized to
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85077
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 27 20:00:56 2018
New Revision: 258903
URL: https://gcc.gnu.org/viewcvs?rev=258903&root=gcc&view=rev
Log:
PR c++/85077
* cp-gimplify.c (cp_fold) <case CONSTRUCTOR>: For ctors with vector
type call fold to generate VECTOR_CSTs when possible.
* g++.dg/ext/vector35.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/vector35.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-gimplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85076] [6/7 Regression] ICE with invalid template used as lambda argument
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] ICE with |[6/7 Regression] ICE with
|invalid template used as |invalid template used as
|lambda argument |lambda argument
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug c++/85077] [8 Regression] V[248][SD]F abs not optimized to
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/85077] [8 Regression] V[248][SD]F abs not optimized to
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--- Comment #8 from Matthias Kretz <kretz at kde dot org> ---
Thanks! FWIW my abs implementation now uses:
template <class T, size_t N>
[[gnu::optimize("finite-math-only,no-signed-zeros")]]
constexpr Storage<T, N> abs(Storage<T, N> v)
{
return v.d < 0 ? -v.d : v.d;
}
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Subject: [Bug fortran/85088] improve diagnostic for bad INTENT declaration ('Invalid character in name at')
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--- Comment #6 from janus at gcc dot gnu.org ---
(In reply to janus from comment #5)
> (In reply to Dominique d'Humieres from comment #4)
> > It seems that there is some inconsistencies
>
> Right, in particular regarding INTENT_INOUT vs DECL_INOUT etc. Therefore the
> patch in comment #2 is much too naive (and produces a huge amount of
> regressions).
These regressions can actually be fixed by making sure that the DECL_* values
correspond to INTENT_*:
Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c (revision 258893)
+++ gcc/fortran/decl.c (working copy)
@@ -4674,9 +4674,10 @@ match_attr_spec (void)
{
/* Modifiers that can exist in a type statement. */
enum
- { GFC_DECL_BEGIN = 0,
- DECL_ALLOCATABLE = GFC_DECL_BEGIN, DECL_DIMENSION, DECL_EXTERNAL,
- DECL_IN, DECL_OUT, DECL_INOUT, DECL_INTRINSIC, DECL_OPTIONAL,
+ { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN,
+ DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT,
+ DECL_DIMENSION, DECL_EXTERNAL,
+ DECL_INTRINSIC, DECL_OPTIONAL,
DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE,
DECL_STATIC, DECL_AUTOMATIC,
DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE,
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Tue, 27 Mar 2018 20:39:00 -0000
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--- Comment #30 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #29)
> Thanks. I can't reproduce that on my openSUSE package nor on my build
> gcc-7-branch. However I downloaded Debian binary and I can confirm that.
> I'm bisecting now...
... reducing :)
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Subject: [Bug fortran/85102] ICE in gfc_conv_intrinsic_dot_product, at fortran/trans-intrinsic.c:4464
Date: Tue, 27 Mar 2018 20:50:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-27
Target Milestone|--- |6.5
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-599510-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 21:08:16 2018
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68155] ICE on initializing character array in type (len_lhs <> len_rhs)
Date: Tue, 27 Mar 2018 21:08:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
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CC| |anlauf at gmx dot de
--- Comment #9 from Harald Anlauf <anlauf at gmx dot de> ---
Playing around with the code in comment #6, with default initialization
within the type:
program p
implicit none
type t
! character(3) :: c2(2) = ['b', 'c'] // 'a' ! lacks padding? / ICE
character(3) :: c3(2) = ['b', 'c'] // 'ax' ! OK
character(3) :: c4(2) = ['b', 'c'] // 'axy' ! only partially OK
end type
type(t) :: z
character(3) :: c
c = z%c3(1) ! OK
print *, c
c = z%c3(2) ! OK
print *, c
c = z%c4(1) ! OK
print *, c
c = z%c4(2) ! truncated
print *, c
end
This prints:
bax
cax
bax
ca
The dump tree starts with:
p ()
{
character(kind=1) c[1:3];
static struct t z = {.c3={"bax", "cax"}, .c4={"bax ", "cax "}};
__builtin_memmove ((void *) &c, (void *) &z.c3[0], 3);
[...]
__builtin_memmove ((void *) &c, (void *) &z.c4[1], 3);
[...]
I do not see from the dump tree what could be wrong with the character
lengths, but somehow the truncation in the last print needs to be
understood.
Enabling the line with c2 and adding a line
c = z%c2(1)
to the main produces in the dump
static struct t z = {.c2={"ba", "ca"}, .c3={"bax", "cax"}, .c4={"bax ", "cax
"}};
__builtin_memmove ((void *) &c, (void *) &z.c2[0], 3);
which should not happen.
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From: "paolo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85067] [8 Regression] ICE with volatile parameter in defaulted copy-constructor
Date: Tue, 27 Mar 2018 21:20:00 -0000
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Mar 27 21:19:25 2018
New Revision: 258904
URL: https://gcc.gnu.org/viewcvs?rev=258904&root=gcc&view=rev
Log:
/cp
2018-03-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/85067
* method.c (defaulted_late_check): Partially revert r253321 changes,
do not early return upon error.
/testsuite
2018-03-27 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/85067
* g++.dg/cpp0x/defaulted51.C: New.
* g++.dg/cpp0x/constexpr-68754.C: Adjust.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/defaulted51.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-68754.C
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85067] [8 Regression] ICE with volatile parameter in defaulted copy-constructor
Date: Tue, 27 Mar 2018 21:21:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
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Subject: [Bug c++/85060] [7/8 Regression] Object cannot call its inherited member function "without object"
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Jason Merrill <jason at gcc dot gnu.org> changed:
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>From gcc-bugs-return-599514-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 21:40:25 2018
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Subject: [Bug c++/85093] [7/8 Regression] wrong number of template arguments does not trigger error when one argument is variadic
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Jason Merrill <jason at gcc dot gnu.org> changed:
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>From gcc-bugs-return-599515-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 22:18:23 2018
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From: "pthaugen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/85103] New: Performance regressions on SPEC with r257582
Date: Tue, 27 Mar 2018 22:18:00 -0000
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Bug ID: 85103
Summary: Performance regressions on SPEC with r257582
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: pthaugen at gcc dot gnu.org
CC: dje at gcc dot gnu.org, hubicka at gcc dot gnu.org,
marxin at gcc dot gnu.org, segher at kernel dot crashing.org,
wschmidt at gcc dot gnu.org
Target Milestone: ---
Host: powerpc64-unknown-linux-gnu
Target: powerpc64-unknown-linux-gnu
Build: powerpc64-unknown-linux-gnu
r257582 is responsible for a 6% degradation in CPU2000 175.vpr and a 12%
degradation in CPU2006 401.bzip2. Both run on a Power7 box.
Very initial look at profile of bzip2 shows degradation is contained to
mainSort(), which showed a 54% increase in run cycles. Appears one of the calls
to mainGtU() is inlined into mainSort in the slow version, but the drop in
cycle counts on mainGtu is no where close to the increase on mainSort.
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Subject: [Bug middle-end/83665] [8 regression] Big code size regression and some code quality improvement at Jan 2 2018
Date: Tue, 27 Mar 2018 22:19:00 -0000
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--- Comment #18 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #17)
> Pat, please open a new bug for the regression caused by the fix.
Done, pr85103.
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Subject: [Bug c++/85104] New: double underline in a C++ error: duplicate const
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85104
Bug ID: 85104
Summary: double underline in a C++ error: duplicate const
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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The redundant const keyword in the error below is underlined twice in GCC 8.
GCC 7 underlines it just once so it seems like something is amiss.
$ cat u.C && gcc -S u.C
const int const i = 0;
u.C:1:11: error: duplicate ‘const’
const int const i = 0;
^~~~~
-----
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
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--- Comment #11 from Steven Munroe <munroesj at gcc dot gnu.org> ---
The requirement was to reduce the use of (in-line) assembler in libraries. Asm
is error prone in the light of 32/64-bit ABI difference and the compiler
(usual) generates the correct code for the target.
Float <-> int/long conversion is common operation and builtin instructions are
preferred where the Posix functions are unnecessarily heavy.
>From gcc-bugs-return-599519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 23:13:41 2018
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Subject: [Bug target/82411] const is not always read-only
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82411
--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Mar 27 23:13:02 2018
New Revision: 258907
URL: https://gcc.gnu.org/viewcvs?rev=258907&root=gcc&view=rev
Log:
rs6000: -mreadonly-in-sdata (PR82411)
This adds a new option -mreadonly-in-sdata (on by default) that
controls whether readonly data can be put in sdata. (For EABI this
does nothing, readonly data is put in sdata2 as usual).
Backport from mainline
2018-03-08 Segher Boessenkool <segher@kernel.crashing.org>
PR target/82411
* config/rs6000/rs6000.c (rs6000_elf_in_small_data_p): Don't put
readonly data in sdata, if that is disabled.
* config/rs6000/sysv4.opt (mreadonly-in-sdata): New option.
* doc/invoke.texi (RS/6000 and PowerPC Options): Document
-mreadonly-in-sdata option.
Backport from mainline
2018-03-08 Segher Boessenkool <segher@kernel.crashing.org>
PR target/82411
* gcc.target/powerpc/ppc-sdata-2.c: Skip if -mno-readonly-in-sdata.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.c
branches/gcc-7-branch/gcc/config/rs6000/sysv4.opt
branches/gcc-7-branch/gcc/doc/invoke.texi
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/ppc-sdata-2.c
>From gcc-bugs-return-599520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 27 23:14:59 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84914] PowerPC complex multiply/divide calls the wrong function when -mabi=ieeelongdouble
Date: Tue, 27 Mar 2018 23:14:00 -0000
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--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Tue Mar 27 23:14:22 2018
New Revision: 258908
URL: https://gcc.gnu.org/viewcvs?rev=258908&root=gcc&view=rev
Log:
[gcc]
2018-03-27 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84914
* config/rs6000/rs6000.c (create_complex_muldiv): New helper
function to create the function decl for complex long double
multiply and divide for -mabi=ieeelongdouble.
(init_float128_ieee): Call it.
[gcc/testsuite]
2018-03-27 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84914
* gcc.target/powerpc/mulkc-2.c: New tests to make sure complex
long double multiply/divide uses the correct function.
* gcc.target/powerpc/mulkc-3.c: Likewise.
* gcc.target/powerpc/divkc-2.c: Likewise.
* gcc.target/powerpc/divkc-3.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/divkc3-2.c
trunk/gcc/testsuite/gcc.target/powerpc/divkc3-3.c
trunk/gcc/testsuite/gcc.target/powerpc/mulkc3-2.c
trunk/gcc/testsuite/gcc.target/powerpc/mulkc3-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/82411] const is not always read-only
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Mar 27 23:28:25 2018
New Revision: 258909
URL: https://gcc.gnu.org/viewcvs?rev=258909&root=gcc&view=rev
Log:
rs6000: -mreadonly-in-sdata (PR82411)
This adds a new option -mreadonly-in-sdata (on by default) that
controls whether readonly data can be put in sdata. (For EABI this
does nothing, readonly data is put in sdata2 as usual).
Backport from mainline
2018-03-08 Segher Boessenkool <segher@kernel.crashing.org>
PR target/82411
* config/rs6000/rs6000.c (rs6000_elf_in_small_data_p): Don't put
readonly data in sdata, if that is disabled.
* config/rs6000/sysv4.opt (mreadonly-in-sdata): New option.
* doc/invoke.texi (RS/6000 and PowerPC Options): Document
-mreadonly-in-sdata option.
gcc/testsuite/
Backport from mainline
2018-03-08 Segher Boessenkool <segher@kernel.crashing.org>
PR target/82411
* gcc.target/powerpc/ppc-sdata-2.c: Skip if -mno-readonly-in-sdata.
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/rs6000/rs6000.c
branches/gcc-6-branch/gcc/config/rs6000/sysv4.opt
branches/gcc-6-branch/gcc/doc/invoke.texi
branches/gcc-6-branch/gcc/testsuite/ChangeLog
branches/gcc-6-branch/gcc/testsuite/gcc.target/powerpc/ppc-sdata-2.c
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Subject: [Bug target/82411] const is not always read-only
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Segher Boessenkool <segher at gcc dot gnu.org> ---
All done.
>From gcc-bugs-return-599523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 00:01:25 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++/85105] New: missing -Wignored-qualifiers with const decltype
Date: Wed, 28 Mar 2018 00:01:00 -0000
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Bug ID: 85105
Summary: missing -Wignored-qualifiers with const decltype
Product: gcc
Version: 8.0
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Both const qualifiers in the program below are ignored but GCC only issues
-Wignored-qualifiers for the first. A warning for the second instance would be
even more useful since the author may be assuming that r2 declares a const
reference to int when it in fact declares a non-const reference.
$ cat u.C && gcc -S -Wall -Wextra -Wpedantic -Wuseless-cast u.C
const int f (); // -Wignored-qualifiers (good)
extern int &r1;
const decltype (r1) r2 = r1; // missing -Wignored-qualifiers
u.C:1:1: warning: type qualifiers ignored on function return type
[-Wignored-qualifiers]
const int f (); // -Wignored-qualifiers (good)
^~~~~
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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Nathaniel J. Smith <njs at pobox dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |njs at pobox dot com
--- Comment #1 from Nathaniel J. Smith <njs at pobox dot com> ---
For context here: NumPy currently uses __builtin_cpu_supports("avx") to decide
whether it can use AVX-accelerated numerical kernels. We've been getting
regular bug reports from users where this __builtin_cpu_supports("avx")
returned true, but then NumPy crashes with a SIGILL when it tries to use AVX.
(It seems to be related to some kind of relatively common virtualization
configurations.)
Examples:
https://github.com/numpy/numpy/issues/10787
https://github.com/numpy/numpy/issues/9532
https://github.com/numpy/numpy/issues/10330
https://github.com/numpy/numpy/issues/9534
Now that Julian finally figured it out, I guess we'll work around it by calling
xgetbv ourselves:
https://github.com/numpy/numpy/pull/10814
but it really seems like it would be better if __builtin_cpu_supports would
check this itself.
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Subject: [Bug c++/84973] [8 Regression] ICE: Segmentation fault (tree_check()/ultimate_transparent_alias_target())
Date: Wed, 28 Mar 2018 05:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84973
--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Mar 28 05:05:14 2018
New Revision: 258914
URL: https://gcc.gnu.org/viewcvs?rev=258914&root=gcc&view=rev
Log:
[PR c++/84973] don't defer output of uninstantiated templates
When an anon struct gets a name through a typedef, we reset its
linkage and that of its members. Member functions may get vague
linkage, which schedules them for deferred output, but we don't want
to add them to the queue if they're uninstantiated templates,
e.g. because the enclosing function is a template. They will be added
as needed when the enclosing template is instantiated.
for gcc/cp/ChangeLog
PR c++/84973
* decl2.c (note_vague_linkage_fn): Don't defer uninstantiated
templates.
for gcc/testsuite/ChangeLog
PR c++/84973
* g++.dg/template/pr84973.C: New.
* g++.dg/template/pr84973-2.C: New.
* g++.dg/template/pr84973-3.C: New.
Added:
trunk/gcc/testsuite/g++.dg/template/pr84973-2.C
trunk/gcc/testsuite/g++.dg/template/pr84973-3.C
trunk/gcc/testsuite/g++.dg/template/pr84973.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl2.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84968] [8 Regression] ICE in strip_typedefs_expr, at cp/tree.c:1792
Date: Wed, 28 Mar 2018 05:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84968
--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Mar 28 05:04:59 2018
New Revision: 258913
URL: https://gcc.gnu.org/viewcvs?rev=258913&root=gcc&view=rev
Log:
[PR c++/84968] reject stmt-exprs in noexcept constexprs
We reject extended statement-expressions in template parameters, so we
might as well reject them in constant expressions used in noexcept
specifications.
for gcc/cp/ChangeLog
PR c++/84968
* tree.c (strip_typedefs_expr): Reject STATEMENT_LISTs.
for gcc/testsuite/ChangeLog
PR c++/84968
* g++.dg/eh/pr84968.C: New.
Added:
trunk/gcc/testsuite/g++.dg/eh/pr84968.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/tree.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/84789] [6/7 Regression] ICE with broken variable declaration in template class
Date: Wed, 28 Mar 2018 05:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84789
--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Wed Mar 28 05:05:30 2018
New Revision: 258915
URL: https://gcc.gnu.org/viewcvs?rev=258915&root=gcc&view=rev
Log:
[PR c++/84789] adjust testcase for -fconcepts
When compiling with -fconcepts,
cp_parser_template_declaration_after_export calls
cp_parser_template_introduction and that preparses qualified-ids not
preceded by typename in such a way that, when we get to
cp_parser_parse_and_diagnose_invalid_type_name and then
cp_parser_diagnose_invalid_type_name, the nested name specifier no
longer carries the previous template-dependent context, so we don't
stand a chance to suggest the use of 'typename' any more. Thus,
tolerate in the testcase the poorer error messages we get.
for gcc/testsuite/ChangeLog
PR c++/84789
* g++.dg/template/pr84789.C: Adjust for testing with
-fconcepts too.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/template/pr84789.C
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Subject: [Bug c++/84968] [8 Regression] ICE in strip_typedefs_expr, at cp/tree.c:1792
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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> ---
Fixed
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Subject: [Bug c++/84973] [8 Regression] ICE: Segmentation fault (tree_check()/ultimate_transparent_alias_target())
Date: Wed, 28 Mar 2018 05:09:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed
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Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
Date: Wed, 28 Mar 2018 05:38:00 -0000
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--- Comment #31 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 43781
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43781&action=edit
Partially reduced test-case
I've got 120KB partially reduced test-case. Any further reduction is not much
possible. I'm able to reproduce that with -O1 -Woverloaded-virtual.
It's super-weird issue, any ggc parameters adjustments do not make any change.
I would recommend to create Debian-specific issue and somebody will need to
investigate which patch is responsible for that.
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Subject: [Bug rtl-optimization/85099] [meta-bug] selective scheduling issues
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug c++/85093] [7/8 Regression] wrong number of template arguments does not trigger error when one argument is variadic
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Subject: [Bug c++/85092] [8 Regression] ICE under -std=gnu++1z in build_over_call under, at cp/call.c:8149
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85092
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
Summary|ICE under -std=gnu++1z in |[8 Regression] ICE under
|build_over_call under, at |-std=gnu++1z in
|cp/call.c:8149 |build_over_call under, at
| |cp/call.c:8149
>From gcc-bugs-return-599534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 08:01:42 2018
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Subject: [Bug c/85094] [8 Regression] -g with any optimization suppresses -Wduplicated-branches
Date: Wed, 28 Mar 2018 08:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
Target Milestone|--- |8.0
Summary|-g with any optimization |[8 Regression] -g with any
|suppresses |optimization suppresses
|-Wduplicated-branches |-Wduplicated-branches
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Subject: [Bug target/85095] [6/7/8 Regression] worse code generated
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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Subject: [Bug c++/85097] ICE in double parameter pack
Date: Wed, 28 Mar 2018 08:04:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
Version|unknown |7.3.1
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-599537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 08:06:40 2018
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Subject: [Bug libstdc++/85098] undefined reference to std::regex::extended
Date: Wed, 28 Mar 2018 08:06:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |link-failure
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
Version|unknown |7.3.1
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
-std=c++17 only works since GCC 7, pre-GCC 7 it fails the same way. It also
works when optimization is enabled.
>From gcc-bugs-return-599538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 08:07:55 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
Version|unknown |7.3.1
Severity|normal |enhancement
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think this is on purpose and unlikely to change.
>From gcc-bugs-return-599539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 08:08:50 2018
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Subject: [Bug c++/85101] C++17 ICE in build_over_call, at cp/call.c:8149
Date: Wed, 28 Mar 2018 08:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |85092
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup of PR85092 (with a smaller testcase?)
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85092
[Bug 85092] [8 Regression] ICE under -std=gnu++1z in build_over_call under, at
cp/call.c:8149
>From gcc-bugs-return-599540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 08:10:29 2018
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Subject: [Bug ipa/85103] [8 Regression] Performance regressions on SPEC with r257582
Date: Wed, 28 Mar 2018 08:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target Milestone|--- |8.0
Summary|Performance regressions on |[8 Regression] Performance
|SPEC with r257582 |regressions on SPEC with
| |r257582
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Subject: [Bug target/85026] [6/7 Regression] Error: branch out of range on arm-linux-gnueabihf
Date: Wed, 28 Mar 2018 09:21:00 -0000
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--- Comment #8 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Wed Mar 28 09:20:22 2018
New Revision: 258916
URL: https://gcc.gnu.org/viewcvs?rev=258916&root=gcc&view=rev
Log:
[arm] PR target/85026: Fix ldrsh length estimate in Thumb state
Backport from mainline
2018-03-23 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/85026
* config/arm/arm.md (unaligned_loadhis): Remove first alternative.
Clean up attributes.
* g++.dg/pr85026.C: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/g++.dg/pr85026.C
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/arm/arm.md
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug testsuite/85106] New: Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
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Bug ID: 85106
Summary: Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Product: gcc
Version: 8.0
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Severity: enhancement
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Component: testsuite
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https://gcc.gnu.org/ml/gcc-patches/2017-06/msg00321.html :
...
Maybe add scan-ltrans-tree-dump and scan-wpa-ipa-dump that look at appropriate
files plus passing appropriate flags to generate dumpfiles in known locations
(I think part of them end up in /tmp).
...
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 09:34:00 -0000
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--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43782
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43782&action=edit
Tentative patch that adds scan-wpa-ipa-dump
Test results look like this (note the scan-wpa-ipa-dump):
...
Test Run By vries on Wed Mar 28 11:02:22 2018
Native configuration is x86_64-pc-linux-gnu
=== gcc tests ===
Schedule of variations:
unix
Running target unix
Running gcc/testsuite/gcc.dg/ipa/ipa.exp ...
PASS: gcc.dg/ipa/ipa-icf-38.c (test for excess errors)
PASS: gcc.dg/ipa/ipa-icf-38.c scan-wpa-ipa-dump icf "Semantic equality
hit:foo->bar"
PASS: gcc.dg/ipa/ipa-icf-38.c scan-wpa-ipa-dump icf "Equal symbols: 1"
=== gcc Summary ===
# of expected passes 3
build/gcc/xgcc version 8.0.1 20180321 (experimental) (GCC)
...
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Subject: [Bug c++/85028] [8 Regression] ICE on invalid C++ code: in tsubst_default_argument, at cp/pt.c:12340
Date: Wed, 28 Mar 2018 09:49:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This works and (most likely) passes the testsuite. Maybe we can catch the issue
earlier, I'll have a look
Index: pt.c
===================================================================
--- pt.c (revision 258915)
+++ pt.c (working copy)
@@ -12337,6 +12337,10 @@ tsubst_default_argument (tree fn, int parmnum, tre
tree parmtype = TREE_TYPE (parm);
if (DECL_BY_REFERENCE (parm))
parmtype = TREE_TYPE (parmtype);
+
+ if (parmtype == error_mark_node)
+ return error_mark_node;
+
gcc_assert (same_type_ignoring_top_level_qualifiers_p (type, parmtype));
tree *slot;
>From gcc-bugs-return-599545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 09:50:53 2018
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Subject: [Bug c++/84964] [8 Regression] ICE in expand_call, at calls.c:4540
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Richard, you are on it, right?
>From gcc-bugs-return-599546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:06:52 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
Date: Wed, 28 Mar 2018 10:06:00 -0000
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--- Comment #3 from Nathaniel J. Smith <njs at pobox dot com> ---
We're using it exactly like the docs recommend. What on earth is
__builtin_cpu_supports for, if not to tell you whether you can use a given
feature?
If this is by design, than at the very least the docs need to make clear that a
return value of 1 does not mean you can actually use the feature. Also, it
would be nice if gcc provided some function that *did* answer the question of
what CPU features you can use, since AFAICT this is what every current user of
__builtin_cpu_supports actually wants.
>From gcc-bugs-return-599547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:11:54 2018
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Subject: [Bug tree-optimization/84824] DCE fails to remove dead code of std::function constructor
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--- Comment #16 from linzj <manjian2006 at gmail dot com> ---
Created attachment 43783
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This patch trying simulate a local escaped node for function call.
This patch trying simulate a local escaped node for function call. Thus all
function call get the correct clobber/use set.
>From gcc-bugs-return-599548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:13:10 2018
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Subject: [Bug tree-optimization/84824] DCE fails to remove dead code of std::function constructor
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--- Comment #17 from linzj <manjian2006 at gmail dot com> ---
After this patch the code still have redundant calls for the inline pass has
finished. But the indirect function calls has been removed.
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Subject: [Bug c++/85028] [8 Regression] ICE on invalid C++ code: in tsubst_default_argument, at cp/pt.c:12340
Date: Wed, 28 Mar 2018 10:15:00 -0000
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
In its way, the bug is interesting: parmtype is only used in the gcc_assert,
thus in principle the error recovery check could be moved inside it. However,
returning early makes for better (vs gcc-7) error recovery.
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Subject: [Bug target/81647] inconsistent LTGT behavior at different optimization levels on AArch64.
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--- Comment #11 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Wed Mar 28 10:15:47 2018
New Revision: 258917
URL: https://gcc.gnu.org/viewcvs?rev=258917&root=gcc&view=rev
Log:
[PR81647][AARCH64] Fix handling of Unordered Comparisons in aarch64-simd.md
This is a backport of r258653 and r258672.
ChangeLog Entries:
*** gcc/ChangeLog ***
2018-03-28 Sudakshina Das <sudi.das@arm.com>
2018-03-19 Sudakshina Das <sudi.das@arm.com>
PR target/81647
* config/aarch64/aarch64-simd.md (vec_cmp<mode><v_cmp_result>): Modify
instructions for UNLT, UNLE, UNGT, UNGE, UNEQ, UNORDERED and ORDERED.
*** gcc/testsuite/ChangeLog ***
2018-03-28 Sudakshina Das <sudi.das@arm.com>
Christophe Lyon <christophe.lyon@linaro.org>
2018-03-20 Christophe Lyon <christophe.lyon@linaro.org>
PR target/81647
* gcc.target/aarch64/pr81647.c: Require fenv_exceptions.
2018-03-19 Sudakshina Das <sudi.das@arm.com>
PR target/81647
* gcc.target/aarch64/pr81647.c: New.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/aarch64/pr81647.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/aarch64/aarch64-simd.md
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:33:34 2018
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From: "schlong at cock dot li" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85107] New: Internal compiler error when casting double to int
Date: Wed, 28 Mar 2018 10:33:00 -0000
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Bug ID: 85107
Summary: Internal compiler error when casting double to int
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: schlong at cock dot li
Target Milestone: ---
Created attachment 43784
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43784&action=edit
Preprocessed file
g++ version:
g++ (Debian 8-20180321-1) 8.0.1 20180321 (experimental) [trunk revision 258712]
command line:
g++ ../src/main.cpp
compiler output:
g++: internal compiler error: Segmentation fault signal terminated program
cc1plus
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
This is as minimal as I can get it. Also segfaults with C-style cast.
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/85026] [6 Regression] Error: branch out of range on arm-linux-gnueabihf
Date: Wed, 28 Mar 2018 10:39:00 -0000
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--- Comment #9 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Wed Mar 28 10:38:36 2018
New Revision: 258918
URL: https://gcc.gnu.org/viewcvs?rev=258918&root=gcc&view=rev
Log:
[arm] PR target/85026: Fix ldrsh length estimate in Thumb state
Backport from mainline
2018-03-23 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/85026
* config/arm/arm.md (unaligned_loadhis): Remove first alternative.
Clean up attributes.
* g++.dg/pr85026.C: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/g++.dg/pr85026.C
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/arm/arm.md
branches/gcc-6-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/85026] Error: branch out of range on arm-linux-gnueabihf
Date: Wed, 28 Mar 2018 10:44:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |6.4.1
Resolution|--- |FIXED
Summary|[6 Regression] Error: |Error: branch out of range
|branch out of range on |on arm-linux-gnueabihf
|arm-linux-gnueabihf |
Known to fail|6.4.1 |
--- Comment #10 from ktkachov at gcc dot gnu.org ---
Fixed on all active branches. Thanks for reporting this.
>From gcc-bugs-return-599554-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:46:22 2018
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Subject: [Bug middle-end/84877] Local stack copy of BLKmode parameter on the stack is not aligned when the requested alignment exceeds MAX_SUPPORTED_STACK_ALIGNMENT
Date: Wed, 28 Mar 2018 10:46:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
Ever confirmed|0 |1
--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-599555-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 10:49:46 2018
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From: "ribasushi at leporine dot io" <gcc-bugzilla@gcc.gnu.org>
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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)
Date: Wed, 28 Mar 2018 10:49:00 -0000
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Peter Rabbitson <ribasushi at leporine dot io> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ribasushi at leporine dot io
--- Comment #3 from Peter Rabbitson <ribasushi at leporine dot io> ---
I ran into a similar issue with a completely different stack.
Here is the complete reproduction "playbook" on ubunty trusty:
https://github.com/ribasushi/gcc_asan_internal_fail/commit/191e08bab6714b32615e51375fcaf871b6c5d245#diff-354f30a63fb0907d4ad57269548329e3R22
Results:
https://travis-ci.org/ribasushi/gcc_asan_internal_fail/builds/359301514#L1992
You can trigger a build by simply issuing a pull request against the
repository:
https://github.com/ribasushi/gcc_asan_internal_fail
Please note - I *am* aware the ODBC driver compilation is riddled with
warnings. This is an auxiliary concern to what I was trying to test, and what
tripped up gcc's sanitizer with an internal CHECK error.
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 11:14:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #43782|0 |1
is obsolete| |
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43785
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43785&action=edit
Updated tentative patch that adds scan-wpa-ipa-dump
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
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--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43786
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Tentative followup patch that adds scan-offload-tree-dump
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From: "fw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/48562] [C++0x] warn about uses of initializer_list that will lead to dangling pointers
Date: Wed, 28 Mar 2018 11:44:00 -0000
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Florian Weimer <fw at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fw at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=66476
--- Comment #8 from Florian Weimer <fw at gcc dot gnu.org> ---
It would also mention to warn about std::initializer_list references in
function arguments, I think. We received a downstream bug report:
#include <initializer_list>
#include <iostream>
template <typename T> class ArrayRef {
public:
using size_type = size_t;
private:
/// The start of the array, in an external buffer.
const T *Data = nullptr;
/// The number of elements.
size_type Length = 0;
public:
/// Construct an ArrayRef from a std::initializer_list.
/*implicit*/ ArrayRef(const std::initializer_list<T> &Vec)
: Data(Vec.begin() == Vec.end() ? (T *)nullptr : Vec.begin()),
Length(Vec.size()) {}
const T &operator[](size_t Index) const { return Data[Index]; }
};
int main(int argc, char **argv) {
const ArrayRef<int> Foo = {42};
std::cout << "Foo " << Foo[0] << "\n";
return 0;
}
https://bugzilla.redhat.com/show_bug.cgi?id=1561373
I believe this code is buggy, and it would be nice to warn about this. Almost
any std::initializer_list object will be a temporary, after all, and the called
function should move the initializer elements, not copy them.
>From gcc-bugs-return-599559-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 11:53:50 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)
Date: Wed, 28 Mar 2018 11:53:00 -0000
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--- Comment #4 from Peter Rabbitson <ribasushi at leporine dot io> ---
I should note also that the LD_PRELOAD is not a factor - I only used it to
simplify the reproduction.
A build with a fully instrumented stack fails the same way:
https://travis-ci.org/Perl5/DBIx-Class/jobs/359213592#L2041-L2063
>From gcc-bugs-return-599560-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:02:24 2018
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Subject: [Bug testsuite/82920] cet test failures on darwin
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Still present at revision r258903.
>From gcc-bugs-return-599561-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:30:54 2018
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Subject: [Bug c++/48562] [C++0x] warn about uses of initializer_list that will lead to dangling pointers
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Florian Weimer from comment #8)
> Almost any std::initializer_list object will be a temporary, after all, and
> the called function should move the initializer elements, not copy them.
std::initializer_list only gives const access to its elements, so you can't
move from them.
>From gcc-bugs-return-599562-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:40:12 2018
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Subject: [Bug target/84033] powerpc64le -moptimize-swaps bad code with vec_vbpermq
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Breno Leitao <brenohl at br dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brenohl at br dot ibm.com
--- Comment #7 from Breno Leitao <brenohl at br dot ibm.com> ---
Hi Alan,
I was not able to read the changelog and understand what are the exact versions
that this bug is fixed. How can I read and get this information?
I am asking this question because mongodb was hitting this issue[1], and the
workaround was disabling optimization[2] during mongodb compilation.
That said, we would like to re-enable the optimized compilation for mongodb[3],
but we need this GCC fix on the distros first, so, I need to know which GCC
version contains this fix and migrating to it prior to the re-enablement of the
Mongodb optimization.
I understand that this fix didn't make the GCC 8 first release, thus, there was
a minor version update on GCC 6, 7 and 8 that contains this fix. Is my
understanding correct?
Thank you,
Breno
[1] https://jira.mongodb.org/browse/SERVER-33395
[2] https://bugs.launchpad.net/ubuntu/+source/mongodb/+bug/1758116
[3] https://bugs.launchpad.net/ubuntu/+source/mongodb/+bug/1758118
>From gcc-bugs-return-599563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:53:59 2018
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Subject: [Bug libstdc++/85098] undefined reference to std::regex::extended
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Wow, I'm amazed nobody's noticed this bug before.
>From gcc-bugs-return-599564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:56:53 2018
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Subject: [Bug libstdc++/85098] undefined reference to std::regex::extended
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:
#include <regex>
void f(const std::regex_constants::syntax_option_type&) { }
int main() {
f(std::regex::extended);
}
>From gcc-bugs-return-599565-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 12:58:42 2018
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Subject: [Bug libstdc++/85098] undefined reference to std::regex::extended
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Untested fix:
--- a/libstdc++-v3/include/bits/regex.h
+++ b/libstdc++-v3/include/bits/regex.h
@@ -776,6 +776,37 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
_AutomatonPtr _M_automaton;
};
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::icase;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::nosubs;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::optimize;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::collate;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::ECMAScript;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::basic;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::extended;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::awk;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::grep;
+ template<typename _Ch, typename _Tr>
+ constexpr regex_constants::syntax_option_type
+ basic_regex<_Ch, _Tr>::egrep;
+
#if __cpp_deduction_guides >= 201606
template<typename _ForwardIterator>
basic_regex(_ForwardIterator, _ForwardIterator,
>From gcc-bugs-return-599566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 13:06:35 2018
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
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Tom de Vries <vries at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Attachment #43785|0 |1
is obsolete| |
--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43787
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43787&action=edit
Further updated tentative patch that adds scan-wpa-ipa-dump
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 13:07:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Attachment #43786|0 |1
is obsolete| |
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43788
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43788&action=edit
Updated tentative followup patch that adds scan-offload-tree-dump
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 13:07:00 -0000
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--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 43789
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Tentative followup patch that adds scan-offload-rtl-dump
>From gcc-bugs-return-599569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:23:05 2018
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Subject: [Bug target/84988] Compiler hang in chkp_type_bounds_count for large arrays
Date: Wed, 28 Mar 2018 14:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84988
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Mar 28 14:22:27 2018
New Revision: 258923
URL: https://gcc.gnu.org/viewcvs?rev=258923&root=gcc&view=rev
Log:
Do not call chkp_type_bounds_count if MPX is not enabled (PR target/84988).
2018-03-28 Martin Liska <mliska@suse.cz>
PR target/84988
* config/i386/i386.c (ix86_function_arg_advance): Do not call
chkp_type_bounds_count if MPX is not enabled.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
>From gcc-bugs-return-599570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:25:18 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 #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please help me how to reproduce that locally with a travis?
>From gcc-bugs-return-599571-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:32:28 2018
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 14:32:00 -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 #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Thanks for working on this! Note that there may be multiple ltrans units (in
theory, not likely in the testsuite), so forcing -flto-partition=one when we
see scan-ltrans-tree-dump would simplify things?
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Subject: [Bug c/85094] [8 Regression] -g with any optimization suppresses -Wduplicated-branches
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-03-28
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43790
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43790&action=edit
gcc8-pr85094.patch
Untested fix.
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Subject: [Bug c/85094] [8 Regression] -g with any optimization suppresses -Wduplicated-branches
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P3 |P1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r255569.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/85081] [7/8 Regression] Sanitizer error with references in vectorized/parallel for-loop
Date: Wed, 28 Mar 2018 14:46:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Mar 28 14:45:21 2018
New Revision: 258924
URL: https://gcc.gnu.org/viewcvs?rev=258924&root=gcc&view=rev
Log:
Fix wrong use-after-scope sanitization for omp variable (PR sanitizer/85081).
2018-03-28 Jakub Jelinek <jakub@redhat.com>
Martin Liska <mliska@suse.cz>
PR sanitizer/85081
* gimplify.c (asan_poison_variable): Don't do the check for
gimplify_omp_ctxp here.
(gimplify_decl_expr): Do it here.
(gimplify_target_expr): Likewise.
2018-03-28 Jakub Jelinek <jakub@redhat.com>
Martin Liska <mliska@suse.cz>
PR sanitizer/85081
* g++.dg/asan/pr85081.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/asan/pr85081.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/85081] [7 Regression] Sanitizer error with references in vectorized/parallel for-loop
Date: Wed, 28 Mar 2018 14:47:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.0.1
Summary|[7/8 Regression] Sanitizer |[7 Regression] Sanitizer
|error with references in |error with references in
|vectorized/parallel |vectorized/parallel
|for-loop |for-loop
Known to fail|8.0.1 |
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk.
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/84819] several typos
Date: Wed, 28 Mar 2018 14:51:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Mar 28 14:51:09 2018
New Revision: 258925
URL: https://gcc.gnu.org/viewcvs?rev=258925&root=gcc&view=rev
Log:
Fix typos (PR other/84819).
2018-03-28 Martin Liska <mliska@suse.cz>
PR other/84819
* calls.c (initialize_argument_information): Fix trailing space.
* common.opt: Fix typo and provide better explanation for
-fsanitize-coverage option.
* config/i386/i386.opt: Fix typo.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/calls.c
trunk/gcc/common.opt
trunk/gcc/config/i386/i386.opt
>From gcc-bugs-return-599577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:53:54 2018
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Subject: [Bug other/84819] several typos
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm closing this as I don't have ambition to backport that.
>From gcc-bugs-return-599578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:56:42 2018
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From: "ribasushi at leporine dot io" <gcc-bugzilla@gcc.gnu.org>
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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 #6 from Peter Rabbitson <ribasushi at leporine dot io> ---
Basically I'd simply run the commands as listed in the .travis.yml file one
after the other ;)
The reason I provided this on travis is because the available environment is
"static", and one can install/run whatever without thinking much, as everything
will be blown away after the finish.
So I guess my question is: how can I help you more specifically?
>From gcc-bugs-return-599579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 14:59:12 2018
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
Date: Wed, 28 Mar 2018 14:59:00 -0000
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--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> Thanks for working on this! Note that there may be multiple ltrans units
> (in theory, not likely in the testsuite), so forcing -flto-partition=one
> when we
> see scan-ltrans-tree-dump would simplify things?
Yeah, I was wondering about that.
I was thinking of this kind of interface:
...
scan-ltrans-tree-dump regex suffix ltrans<n> [{ target/xfail selector }]
...
but I'll try the -flto-partition=one idea, indeed that seems simpler.
>From gcc-bugs-return-599580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:02:37 2018
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Subject: [Bug c++/85108] New: Incorrect warning for constexpr lambda with -Wunused-but-set-variable
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85108
Bug ID: 85108
Summary: Incorrect warning for constexpr lambda with
-Wunused-but-set-variable
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 43791
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43791&action=edit
minimal test case
If a lambda is declared constexpr, and then used within another lambda, with
the flag -Wunused-but-set-variable the compiler produces an incorrect warning
that the constexpr lambda is set but not used, when it is.
See attached minimal test case.
>From gcc-bugs-return-599581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:05:18 2018
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Subject: [Bug c++/85109] New: Incorrect warning for constexpr lambda with -Wunused-but-set-variable
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85109
Bug ID: 85109
Summary: Incorrect warning for constexpr lambda with
-Wunused-but-set-variable
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 43792
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43792&action=edit
minimal test case
If a lambda is declared constexpr, and then used within another lambda, with
the flag -Wunused-but-set-variable the compiler produces an incorrect warning
that the constexpr lambda is set but not used, when it is.
See attached minimal test case.
>From gcc-bugs-return-599583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:15:44 2018
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Subject: [Bug c++/85108] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
Date: Wed, 28 Mar 2018 15:15:00 -0000
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
*** Bug 85109 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599582-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:15:43 2018
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Subject: [Bug c++/85109] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
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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
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
Your bug went thru the first time as bug 85108
*** This bug has been marked as a duplicate of bug 85108 ***
>From gcc-bugs-return-599584-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:21:50 2018
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Subject: [Bug c++/63392] poor error recovery with missing typename
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599585-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:25:27 2018
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
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----------------------------------------------------------------------------
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| |vmakarov at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess it depends on what exactly a normal subreg on lhs means.
The documentation says:
When used as an lvalue, 'subreg' is a word-based accessor.
Storing to a 'subreg' modifies all the words of REG that
overlap the 'subreg', but it leaves the other words of REG
alone.
but in this case, we really don't have a GPR, but rather a single much larger
(512-bit) register. Does it still imply that for -m32 (subreg:SI (reg:V32HI)
0)
sets just the low 32 bits of the large register and doesn't modify anything
else,
and for -m64 the same means set low 32 bits, have the 32 bits above it
undefined and the rest of bits unmodified?
Seems store_bit_field treats it that way, but perhaps IRA does not?
>From gcc-bugs-return-599586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:46:50 2018
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Subject: [Bug c/70924] Wrong position for "warning: missing braces around initializer [-Wmissing-braces]"
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>From gcc-bugs-return-599588-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 15:48:50 2018
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From: "vz-gcc at zeitlins dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85091] Compiler generates different code depending on whether -Wnonnull -Woverloaded-virtual given or not
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--- Comment #32 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
(In reply to Martin Liška from comment #31)
> Created attachment 43781 [details]
> Partially reduced test-case
>
> I've got 120KB partially reduced test-case. Any further reduction is not
> much possible. I'm able to reproduce that with -O1 -Woverloaded-virtual.
> It's super-weird issue, any ggc parameters adjustments do not make any
> change.
> I would recommend to create Debian-specific issue and somebody will need to
> investigate which patch is responsible for that.
Thanks Martin! I've created
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894302 for it now, pointing
to this bug and your test case.
>From gcc-bugs-return-599589-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 16:19:02 2018
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |itsimbal at gcc dot gnu.org,
| |kyukhin at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason why we do something so weird rather than ix86_expand_vector_set is
that sse.md lacks vec_setv32hi and vec_setv64qi patterns, IMHO it should have
them.
E.g. on:
typedef short V __attribute__((vector_size (64)));
V
foo (V x, int y)
{
x[0] = y;
return x;
}
V
bar (V x, int y)
{
x[7] = y;
return x;
}
V
baz (V x, int y)
{
x[11] = y;
return x;
}
we generate completely terrible code with -O2 -mavx512f -mtune=intel or
-O2 -mavx512bw -mtune=intel.
Moving the word out of the vector, performing masking etc. on the GRPs and then
inserting it again.
clang emits:
vpinsrw $0, %edi, %xmm0, %xmm2
vpblendd $15, %ymm2, %ymm0, %ymm0
(and s/$0/$7/) for foo/bar with -O2 -mavx512f, which makes me wonder if the VEX
256-bit vpblendd with 4 arguments really doesn't clear the upper 256 bits,
128-bit vpblendd is documented to clear them, and for baz:
vextracti128 $1, %ymm0, %xmm2
vpinsrw $3, %edi, %xmm2, %xmm2
vinserti128 $1, %xmm2, %ymm0, %ymm0
With -O2 -mavx512bw they emit:
vpinsrw $0, %edi, %xmm0, %xmm1
vinserti32x4 $0, %xmm1, %zmm0, %zmm0
(and s/$0/$7/) for foo/bar, though none of those instructions actually require
AVX512BW. And for baz:
vextracti128 $1, %ymm0, %xmm1
vpinsrw $3, %edi, %xmm1, %xmm1
vinserti32x4 $1, %xmm1, %zmm0, %zmm0
>From gcc-bugs-return-599590-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 16:37:52 2018
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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++/85110] New: Missing underlines for some bad arguments
Date: Wed, 28 Mar 2018 16:37:00 -0000
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Bug ID: 85110
Summary: Missing underlines for some bad arguments
Product: gcc
Version: 8.0
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In gcc 8, the C++ FE underlines some bogus arguments to function calls, as of
r256448.
However we're missing some. Given:
void callee (int one, const char **two, int three);
void
caller (const char *fmt)
{
callee (1, fmt, 3);
}
We emit:
$ g++ test.cc
test.cc: In function ‘void caller(const char*)’:
test.cc:6:20: error: cannot convert ‘const char*’ to ‘const char**’ for
argument ‘2’ to ‘void callee(int, const char**, int)’
callee (1, fmt, 3);
^
We ought to underline the problematic argument, and, ideally the decl.
I have a patch for this.
>From gcc-bugs-return-599591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 16:38:17 2018
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Subject: [Bug c++/85110] Missing underlines for some bad arguments
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Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
In build_new_function_call, we have:
cand = perform_overload_resolution (fn, *args, &candidates, &any_viable_p,
complain);
if (!cand)
{
if (complain & tf_error)
{
// If there is a single (non-viable) function candidate,
// let the error be diagnosed by cp_build_function_call_vec.
if (!any_viable_p && candidates && ! candidates->next
&& (TREE_CODE (candidates->fn) == FUNCTION_DECL))
return cp_build_function_call_vec (candidates->fn, args,
complain);
******************************* CASE 1
****************************
// Otherwise, emit notes for non-viable candidates.
print_error_for_call_failure (fn, *args, candidates);
}
[...snip...]
}
else
{
[...snip...]
************************CASE 2 ************************************
result = build_over_call (cand, flags, complain);
}
"CASE 2" is handled by r256448, where perform_overload_resolution has returned
a non-NULL candidate, but there's a failure in convert_like_real.
This new PR (and the example in comment #0) covers "CASE 1" above.
>From gcc-bugs-return-599592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 16:42:07 2018
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Subject: [Bug lto/84995] Documentation gcc-ar and gcc-ranlib vs {libdir}/bfd-plugins
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Working on that I've just noticed Richi that gcc/doc/invoke.texi contains:
9485 Link-time optimization does not work well with generation of debugging
9486 information. Combining @option{-flto} with
9487 @option{-g} is currently experimental and expected to produce
unexpected
9488 results.
Now having early-lto debug info, would you change it?
>From gcc-bugs-return-599593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:04:57 2018
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Subject: [Bug c++/85061] ICE with __builtin_offsetof applied to static member
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Volker Reichelt <reichelt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
Fixed by Jakub's patch.
>From gcc-bugs-return-599594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:34:44 2018
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Wed Mar 28 17:34:08 2018
New Revision: 258926
URL: https://gcc.gnu.org/viewcvs?rev=258926&root=gcc&view=rev
Log:
2018-03-28 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
Backport from trunk.
* frontend-passes.c (gfc_run_passes): Do not run front-end
optimizations if a previous error occurred.
2018-03-28 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
Backport from trunk.
* gfortran.dg/matmul_rank_1.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/matmul_rank_1.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
>From gcc-bugs-return-599595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:37:26 2018
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Subject: [Bug c++/48562] [C++0x] warn about uses of initializer_list that will lead to dangling pointers
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=67445
--- Comment #10 from Eric Gallager <egallager at gcc dot gnu.org> ---
Possibly related to bug 67445?
>From gcc-bugs-return-599596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:42:29 2018
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Wed Mar 28 17:41:51 2018
New Revision: 258927
URL: https://gcc.gnu.org/viewcvs?rev=258927&root=gcc&view=rev
Log:
2018-03-28 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
Backport from trunk.
* frontend-passes.c (gfc_run_passes): Do not run front-end
optimizations if a previous error occurred.
2018-03-28 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85084
Backport from trunk.
* gfortran.dg/matmul_rank_1.f90: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gfortran.dg/matmul_rank_1.f90
Modified:
branches/gcc-6-branch/gcc/fortran/ChangeLog
branches/gcc-6-branch/gcc/fortran/frontend-passes.c
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>From gcc-bugs-return-599597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:43:04 2018
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Subject: [Bug fortran/85084] [6/7/8 Regression] ICE: out of memory allocating 18446744073709551600 bytes ...
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
>From gcc-bugs-return-599598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:45:37 2018
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Subject: [Bug libfortran/83948] Thread safety issue writing to internal file - libgfortran
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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CC| |tkoenig at gcc dot gnu.org
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Well, this WORKSFORME.
Please re-open if the problem persists.
>From gcc-bugs-return-599599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:48:01 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85111] New: [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
Date: Wed, 28 Mar 2018 17:48:00 -0000
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Bug ID: 85111
Summary: [8 Regression] ICE in min_max_choose, at
fortran/simplify.c:4884 (and others)
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
Introduced between 20171217 and 20180107.
Invalid code, occasionally similar for other basic types.
$ cat za1.f90
program p
integer, parameter :: a(2,0) = reshape([1,2,3,4], shape(a))
integer, parameter :: b(2) = maxloc(a, dim=1)
end
$ cat za2.f90
program p
integer, parameter :: a(2,0) = reshape([1,2,3,4], shape(a))
integer, parameter :: b(2) = minloc(a, dim=1)
end
$ gfortran-8-20180325 -c za1.f90
f951: internal compiler error: Segmentation fault
0xb9c38f crash_signal
../../gcc/toplev.c:325
0x724896 min_max_choose
../../gcc/fortran/simplify.c:4884
0x724ed3 simplify_minmaxloc_to_array
../../gcc/fortran/simplify.c:5316
0x72ddb2 gfc_simplify_minmaxloc(gfc_expr*, gfc_expr*, gfc_expr*, gfc_expr*,
int)
../../gcc/fortran/simplify.c:5413
0x6b99e3 do_simplify
../../gcc/fortran/intrinsic.c:4442
0x6c408c gfc_intrinsic_func_interface(gfc_expr*, int)
../../gcc/fortran/intrinsic.c:4798
0x70de35 resolve_unknown_f
../../gcc/fortran/resolve.c:2870
0x70de35 resolve_function
../../gcc/fortran/resolve.c:3179
0x70df5a gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6709
0x6aad1f gfc_reduce_init_expr(gfc_expr*)
../../gcc/fortran/expr.c:2773
0x6ad821 gfc_match_init_expr(gfc_expr**)
../../gcc/fortran/expr.c:2821
0x69b2c2 variable_decl
../../gcc/fortran/decl.c:2642
0x69b2c2 gfc_match_data_decl()
../../gcc/fortran/decl.c:5838
0x6f60b9 match_word_omp_simd
../../gcc/fortran/parse.c:93
0x6f97ae match_word
../../gcc/fortran/parse.c:376
0x6f97ae decode_statement
../../gcc/fortran/parse.c:376
0x6fb6d4 next_free
../../gcc/fortran/parse.c:1230
0x6fb6d4 next_statement
../../gcc/fortran/parse.c:1462
0x6fcfcc parse_spec
../../gcc/fortran/parse.c:3854
0x6ff4b3 parse_progunit
../../gcc/fortran/parse.c:5667
>From gcc-bugs-return-599600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:49:07 2018
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
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--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---
$ cat zc1.f90
program p
integer, parameter :: a(2,0) = reshape([1,2,3,4], shape(a))
integer, parameter :: b(2) = maxloc(shape(a))
end
$ cat zc7.f90
program p
character, parameter :: a(2,0) = reshape(['a','b','c','d'], shape(a))
character, parameter :: b(2) = maxloc(shape(a))
end
$ gfortran-8-20180325 -c zc1.f90
f951: internal compiler error: Segmentation fault
0xb9c38f crash_signal
../../gcc/toplev.c:325
0x725201 simplify_minmaxloc_nodim
../../gcc/fortran/simplify.c:5133
0x72dfe7 gfc_simplify_minmaxloc(gfc_expr*, gfc_expr*, gfc_expr*, gfc_expr*,
int)
../../gcc/fortran/simplify.c:5418
0x6b99e3 do_simplify
../../gcc/fortran/intrinsic.c:4442
0x6c408c gfc_intrinsic_func_interface(gfc_expr*, int)
../../gcc/fortran/intrinsic.c:4798
0x70de35 resolve_unknown_f
../../gcc/fortran/resolve.c:2870
0x70de35 resolve_function
../../gcc/fortran/resolve.c:3179
0x70df5a gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6709
0x6aad1f gfc_reduce_init_expr(gfc_expr*)
../../gcc/fortran/expr.c:2773
0x6ad821 gfc_match_init_expr(gfc_expr**)
../../gcc/fortran/expr.c:2821
0x69b2c2 variable_decl
../../gcc/fortran/decl.c:2642
0x69b2c2 gfc_match_data_decl()
../../gcc/fortran/decl.c:5838
0x6f60b9 match_word_omp_simd
../../gcc/fortran/parse.c:93
0x6f97ae match_word
../../gcc/fortran/parse.c:376
0x6f97ae decode_statement
../../gcc/fortran/parse.c:376
0x6fb6d4 next_free
../../gcc/fortran/parse.c:1230
0x6fb6d4 next_statement
../../gcc/fortran/parse.c:1462
0x6fcfcc parse_spec
../../gcc/fortran/parse.c:3854
0x6ff4b3 parse_progunit
../../gcc/fortran/parse.c:5667
0x700a94 gfc_parse_file()
../../gcc/fortran/parse.c:6207
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
Date: Wed, 28 Mar 2018 17:50:00 -0000
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--- Comment #2 from G. Steinmetz <gscfq@t-online.de> ---
Changed between 20171210 and 20171217.
$ cat ze1.f90
program p
character, parameter :: a(2,0) = reshape(['a','b','c','d'], shape(a))
character, parameter :: b(2) = maxval(a, dim=1)
end
$ gfortran-8-20180325 -c ze1.f90
f951: internal compiler error: in gfc_resolve_character_array_constructor, at
fortran/array.c:2050
0x67a8a0 gfc_resolve_character_array_constructor(gfc_expr*)
../../gcc/fortran/array.c:2050
0x70f217 fixup_charlen
../../gcc/fortran/resolve.c:5744
0x70f217 gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:6780
0x6aad1f gfc_reduce_init_expr(gfc_expr*)
../../gcc/fortran/expr.c:2773
0x6ad821 gfc_match_init_expr(gfc_expr**)
../../gcc/fortran/expr.c:2821
0x69b2c2 variable_decl
../../gcc/fortran/decl.c:2642
0x69b2c2 gfc_match_data_decl()
../../gcc/fortran/decl.c:5838
0x6f60b9 match_word_omp_simd
../../gcc/fortran/parse.c:93
0x6f97ae match_word
../../gcc/fortran/parse.c:376
0x6f97ae decode_statement
../../gcc/fortran/parse.c:376
0x6fb6d4 next_free
../../gcc/fortran/parse.c:1230
0x6fb6d4 next_statement
../../gcc/fortran/parse.c:1462
0x6fcfcc parse_spec
../../gcc/fortran/parse.c:3854
0x6ff4b3 parse_progunit
../../gcc/fortran/parse.c:5667
0x700a94 gfc_parse_file()
../../gcc/fortran/parse.c:6207
0x74791f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
>From gcc-bugs-return-599602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 17:55:17 2018
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Subject: [Bug c++/85092] [8 Regression] ICE under -std=gnu++1z in build_over_call under, at cp/call.c:8149
Date: Wed, 28 Mar 2018 17:55:00 -0000
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Pavel Roskin <proski at gnu dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |proski at gnu dot org
--- Comment #1 from Pavel Roskin <proski at gnu dot org> ---
Possibly even simpler case:
#include <set>
struct IntSet {
IntSet(int value) : value_{std::set<int>{value}} {}
std::set<int> value_;
};
I'm testing gcc-8 on a large project that compiled with an older gcc-8 snapshot
and this bug is triggered on many files. The workaround is to use () rather
than {} for constructor calls.
>From gcc-bugs-return-599604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 18:18:50 2018
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
Date: Wed, 28 Mar 2018 18:18:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
CC| |tkoenig at gcc dot gnu.org
Known to work| |7.3.0
Target Milestone|--- |8.0
Ever confirmed|0 |1
Known to fail| |8.0.1
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Likely revision r256088 for the tests in comments 0 and 1.
With r256065 and before I get
pr85111.f90:3:31:
integer, parameter :: b(2) = maxloc(a, dim=1)
1
Error: transformational intrinsic 'maxloc' at (1) is not permitted in an
initialization expression
For the test in comment 2, it likely r255542.
>From gcc-bugs-return-599603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 18:18:39 2018
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Subject: [Bug inline-asm/84677] [6/7 Regression] internal compiler error: in extract_constrain_insn, at recog.c:2205
Date: Wed, 28 Mar 2018 18:18:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-checking
CC| |jakub at gcc dot gnu.org
Summary|[6/7/8 Regression] internal |[6/7 Regression] internal
|compiler error: in |compiler error: in
|extract_constrain_insn, at |extract_constrain_insn, at
|recog.c:2205 |recog.c:2205
Known to fail|8.0 |
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This got fixed with r258393 aka PR84682 on the trunk; doesn't ICE with
-fno-checking, so doesn't fail on release branches.
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot com
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 43793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43793&action=edit
A patch
Please try this.
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>From gcc-bugs-return-599607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 18:21:49 2018
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Subject: [Bug inline-asm/84680] [6/7/8 Regression] internal compiler error: Max. number of generated reload insns per insn is achieved (90)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Guess that is the point when the "v" constraint has been introduced.
>From gcc-bugs-return-599608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 18:26:35 2018
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Subject: [Bug fortran/52473] CSHIFT slow - inline it?
Date: Wed, 28 Mar 2018 18:26:00 -0000
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--- Comment #16 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
For the original test compiled with -Ofast, I get
Testing explicit DO loops
Dim = 1 Elapsed CPU time = 0.846953988
Dim = 2 Elapsed CPU time = 0.724469006
Dim = 3 Elapsed CPU time = 0.680019855
Testing built-in cshift
Dim = 1 Elapsed CPU time = 0.506424904
Dim = 2 Elapsed CPU time = 0.391590118
Dim = 3 Elapsed CPU time = 0.352367163
An for the IDRIS test:
=====================
Call to test_eoshift
=====================
Order of matrix: 1000
test_eoshift> 1) EOSHIFT
Used CPU time ==> 2.976 ms
test__eoshift> 2) DO loop
Used CPU time ==> 0.832 ms
Results OK
====================
Call to test_cshift
====================
Order of matrix: 1000
test_cshift> 1) CSHIFT
Used CPU time ==> 1.377 ms
test__cshift> 2) DO loop
Used CPU time ==> 1.051 ms
Results OK
=====================
Call to test_reshape
=====================
Order of matrix: 1000
test__reshape> 1) RESHAPE
Used CPU time ==> 4.909 ms
test__reshape> 2) DO loop
Used CPU time ==> 0.877 ms
Results OK
May be this PR could be closed.
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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Subject: [Bug fortran/68155] ICE on initializing character array in type (len_lhs <> len_rhs)
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--- Comment #10 from Harald Anlauf <anlauf at gmx dot de> ---
The structure constructor seems to lose the character length, which
can be best seen from the tree dump.
program p
implicit none
type t
! character(3) :: c1(2) = [ 'b', 'c'] ! OK
! character(3) :: c2(2) = [ character(1) :: 'b', 'c'] // "" ! OK
! character(3) :: c3(2) = [ 'b', 'c'] // "" ! ICE
character(3) :: c4(2) = [ '' , '' ] // "" ! wrong output
end type t
type(t) :: z
! print *, "'", z%c1(2), "'" ! OK
! print *, "'", z%c2(2), "'" ! OK
! print *, "'", z%c3(2), "'" ! ICE
print *, "'", z%c4(2), "'" ! wrong output: '^@^@^@'
end
% grep c4 pr68155-zz4b.f90.003t.original
static struct t z = {.c4={"", ""}}; <--- length 0!
_gfortran_transfer_character_write (&dt_parm.0, &z.c4[1], 3);
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Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
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--- Comment #39 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 28 19:15:39 2018
New Revision: 258930
URL: https://gcc.gnu.org/viewcvs?rev=258930&root=gcc&view=rev
Log:
PR tree-optimization/82004
* gimple-match-head.c (optimize_pow_to_exp): New function.
* match.pd (pow(C,x) -> exp(log(C)*x)): Wrap with #if GIMPLE.
Don't fold to exp if optimize_pow_to_exp is false.
* gcc.dg/pr82004.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr82004.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-match-head.c
trunk/gcc/match.pd
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/85095] [6/7/8 Regression] worse code generated
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 28 19:16:50 2018
New Revision: 258931
URL: https://gcc.gnu.org/viewcvs?rev=258931&root=gcc&view=rev
Log:
PR target/85095
* config/i386/i386.md (*add<mode>3_carry_0, *addsi3_carry_zext_0,
*sub<mode>3_carry_0, *subsi3_carry_zext_0): New patterns.
* gcc.target/i386/pr85095-1.c: New test.
* gcc.target/i386/pr85095-2.c: New test.
* gcc.c-torture/execute/pr85095.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr85095.c
trunk/gcc/testsuite/gcc.target/i386/pr85095-1.c
trunk/gcc/testsuite/gcc.target/i386/pr85095-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85028] [8 Regression] ICE on invalid C++ code: in tsubst_default_argument, at cp/pt.c:12340
Date: Wed, 28 Mar 2018 19:22:00 -0000
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Mar 28 19:21:41 2018
New Revision: 258932
URL: https://gcc.gnu.org/viewcvs?rev=258932&root=gcc&view=rev
Log:
/cp
2018-03-28 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/85028
* pt.c (tsubst_default_argument): Early return if the type of the
parameter is erroneous.
/testsuite
2018-03-28 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/85028
* g++.dg/other/default13.C: New.
Added:
trunk/gcc/testsuite/g++.dg/other/default13.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/85112] New: [8 Regression] ICE with invalid constexpr
Date: Wed, 28 Mar 2018 19:24:00 -0000
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Bug ID: 85112
Summary: [8 Regression] ICE with invalid constexpr
Product: gcc
Version: unknown
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The following invalid code snippet triggers an ICE on trunk:
===============================
struct A
{
int m;
int n : 4;
};
int i;
void foo()
{
constexpr int j = i;
A a;
a.n = j;
}
===============================
bug.cc: In function 'void foo()':
bug.cc:11:21: error: the value of 'i' is not usable in a constant expression
constexpr int j = i;
^
bug.cc:7:5: note: 'int i' is not const
int i;
^
bug.cc:13:7: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in useless_type_conversion_p, at gimple-expr.c:86
a.n = j;
~~~~^~~
0x78cafe tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9372
0x6ce53d tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc/gcc/tree.h:3258
0x6ce53d useless_type_conversion_p(tree_node*, tree_node*)
../../gcc/gcc/gimple-expr.c:86
0x10bc78a tree_ssa_strip_useless_type_conversions(tree_node*)
../../gcc/gcc/tree-ssa.c:1253
0xc645a7 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11330
0xc74513 gimplify_modify_expr
../../gcc/gcc/gimplify.c:5625
0xc65c10 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11434
0xc68d16 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc66bb2 gimplify_cleanup_point_expr
../../gcc/gcc/gimplify.c:6399
0xc66bb2 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11811
0xc68d16 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc664bb gimplify_statement_list
../../gcc/gcc/gimplify.c:1764
0xc664bb gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11863
0xc68d16 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc69a3c gimplify_bind_expr
../../gcc/gcc/gimplify.c:1331
0xc66b2a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11635
0xc68d16 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6a70a gimplify_body(tree_node*, bool)
../../gcc/gcc/gimplify.c:12635
0xc6ac04 gimplify_function_tree(tree_node*)
../../gcc/gcc/gimplify.c:12800
0xaef847 cgraph_node::analyze()
../../gcc/gcc/cgraphunit.c:670
Please submit a full bug report, [etc.]
The regression was introduced between 2017-06-06 and 2017-06-10.
>From gcc-bugs-return-599617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:25:34 2018
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Subject: [Bug target/85095] [6/7 Regression] worse code generated
Date: Wed, 28 Mar 2018 19:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8 Regression] worse |[6/7 Regression] worse code
|code generated |generated
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-599616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:25:16 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare
Date: Wed, 28 Mar 2018 19:25:00 -0000
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--- Comment #40 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Workaround applied, should work now even with -flto. Would be nice to report
it to SPEC though, to make the code accept a few ulps difference.
>From gcc-bugs-return-599618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:26:59 2018
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Subject: [Bug c++/85028] [8 Regression] ICE on invalid C++ code: in tsubst_default_argument, at cp/pt.c:12340
Date: Wed, 28 Mar 2018 19:26:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
>From gcc-bugs-return-599619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:41:39 2018
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Subject: [Bug fortran/83319] [7/8 Regression] ICE on use of allocatable component in derived type coarray defined in module
Date: Wed, 28 Mar 2018 19:41:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org
--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
A downstream bug report that appears to be the same issue:
https://bugzilla.redhat.com/show_bug.cgi?id=1560932
(seems to be fixed on gcc-7-branch by r258233)
>From gcc-bugs-return-599620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:43:12 2018
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Subject: [Bug c++/85113] New: [7/8 Regression] ICE with __builtin_constant_p
Date: Wed, 28 Mar 2018 19:43:00 -0000
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Bug ID: 85113
Summary: [7/8 Regression] ICE with __builtin_constant_p
Product: gcc
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Status: UNCONFIRMED
Keywords: ice-on-valid-code, rejects-valid
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The following valid code snippet triggers an ICE on trunk:
=======================================
template<bool> struct A {};
constexpr int foo()
{
A<__builtin_constant_p(0)> a{};
return 0;
}
=======================================
bug.cc: In function 'constexpr int foo()':
bug.cc:5:28: internal compiler error: in coerce_template_parms, at cp/pt.c:8502
A<__builtin_constant_p(0)> a{};
^
0x64a25b coerce_template_parms
../../gcc/gcc/cp/pt.c:8502
0x97b406 lookup_template_class_1
../../gcc/gcc/cp/pt.c:9016
0x97b406 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:9365
0x9abdfd finish_template_type(tree_node*, tree_node*, int)
../../gcc/gcc/cp/semantics.c:3227
0x928364 cp_parser_template_id
../../gcc/gcc/cp/parser.c:15852
0x92846e cp_parser_class_name
../../gcc/gcc/cp/parser.c:22383
0x93521f cp_parser_qualifying_entity
../../gcc/gcc/cp/parser.c:6580
0x93521f cp_parser_nested_name_specifier_opt
../../gcc/gcc/cp/parser.c:6266
0x936c35 cp_parser_simple_type_specifier
../../gcc/gcc/cp/parser.c:17179
0x930ce5 cp_parser_type_specifier
../../gcc/gcc/cp/parser.c:16852
0x93e096 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13627
0x943790 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12937
0x944738 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12884
0x945169 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:12478
0x9236d3 cp_parser_statement
../../gcc/gcc/cp/parser.c:10927
0x924640 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11276
0x924717 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11230
0x93b230 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21789
0x93b230 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21826
0x93bae0 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26847
Please submit a full bug report, [etc.]
The regression was introduced between 2018-03-17 and 2018-03-20.
In addition the code is rejected on the GCC 7 branch (7.3.1)
while it was still accepted in GCC 7.3.0.
>From gcc-bugs-return-599621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:49:24 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/84679] [6/7/8 Regression] internal compiler error: in lra_eliminate_reg_if_possible, at lra-eliminations.c:1382
Date: Wed, 28 Mar 2018 19:49:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed by the patch for PR84682 (r258393).
>From gcc-bugs-return-599622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:52:02 2018
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Subject: [Bug fortran/83319] [7/8 Regression] ICE on use of allocatable component in derived type coarray defined in module
Date: Wed, 28 Mar 2018 19:52:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jakub at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, is this fixed now and can be RESOLVED FIXED?
>From gcc-bugs-return-599623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 19:52:23 2018
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Subject: [Bug fortran/83319] [7/8 Regression] ICE on use of allocatable component in derived type coarray defined in module
Date: Wed, 28 Mar 2018 19:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83319
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
>From gcc-bugs-return-599624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:03:41 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++/85101] C++17 ICE in build_over_call, at cp/call.c:8149
Date: Wed, 28 Mar 2018 20:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85101
Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the reduced test case below:
$ cat pr85101.ii && gcc -O2 -S -Wall -std=c++17 pr85101.ii
namespace std {
template <class T>
struct initializer_list {
const T *a;
unsigned long n;
};
}
struct A
{
A (std::initializer_list<char>);
};
A f ();
A a { f () };
pr85101.ii:18:12: internal compiler error: in build_over_call, at
cp/call.c:8149
A a { f () };
^
0x80e3f9 build_over_call
/ssd/src/gcc/svn/gcc/cp/call.c:8143
0x814701 build_new_method_call_1
/ssd/src/gcc/svn/gcc/cp/call.c:9363
0x814ce3 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/ssd/src/gcc/svn/gcc/cp/call.c:9439
0x811dc8 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/ssd/src/gcc/svn/gcc/cp/call.c:8969
0x93da7f expand_default_init
/ssd/src/gcc/svn/gcc/cp/init.c:1888
0x93e0e7 expand_aggr_init_1
/ssd/src/gcc/svn/gcc/cp/init.c:2002
0x93ccf8 build_aggr_init(tree_node*, tree_node*, int, int)
/ssd/src/gcc/svn/gcc/cp/init.c:1743
0x8c9e67 build_aggr_init_full_exprs
/ssd/src/gcc/svn/gcc/cp/decl.c:6273
0x8cad62 check_initializer
/ssd/src/gcc/svn/gcc/cp/decl.c:6422
0x8ce90b cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
/ssd/src/gcc/svn/gcc/cp/decl.c:7127
0x9d1fb7 cp_parser_init_declarator
/ssd/src/gcc/svn/gcc/cp/parser.c:19749
0x9c522a cp_parser_simple_declaration
/ssd/src/gcc/svn/gcc/cp/parser.c:13067
0x9c4d8e cp_parser_block_declaration
/ssd/src/gcc/svn/gcc/cp/parser.c:12885
0x9c4b01 cp_parser_declaration
/ssd/src/gcc/svn/gcc/cp/parser.c:12782
0x9c4649 cp_parser_declaration_seq_opt
/ssd/src/gcc/svn/gcc/cp/parser.c:12658
0x9b25c4 cp_parser_translation_unit
/ssd/src/gcc/svn/gcc/cp/parser.c:4563
0xa06eef c_parse_file()
/ssd/src/gcc/svn/gcc/cp/parser.c:39024
0xbb02e6 c_common_parse_file()
/ssd/src/gcc/svn/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.
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Subject: [Bug target/84912] __builtin_divde* produce Internal Compiler Error when compiled -m32
Date: Wed, 28 Mar 2018 20:09:00 -0000
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--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Wed Mar 28 20:09:02 2018
New Revision: 258933
URL: https://gcc.gnu.org/viewcvs?rev=258933&root=gcc&view=rev
Log:
gcc/
PR target/84912
* config/rs6000/rs6000-builtin.def (DIVWEO): Delete macro expansion.
(DIVWEUO): Likewise.
(DIVDEO): Likewise.
(DIVDEUO): Likewise.
* config/rs6000/rs6000.c (builtin_function_type): Remove support for
DIVWEUO and DIVDEUO.
* config/rs6000/rs6000.md (UNSPEC_DIVEO, UNSPEC_DIVEUO): Delete
unspecs.
(UNSPEC_DIV_EXTEND): Remove deleted unspecs.
(div_extend): Likewise.
* doc/extend.texi (__builtin_divweo): Remove documention for deleted
builtin function.
(__builtin_divweuo): Likewise.
(__builtin_divdeo): Likewise.
(__builtin_divdeuo): Likewise.
gcc/testsuite/
PR target/84912
* gcc.target/powerpc/extend-divide-1.c (div_weo): Remove test for
deleted builtin function.
(div_weuo): Likewise.
* gcc.target/powerpc/extend-divide-2.c (div_deo): Likewise.
(div_deuo): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000-builtin.def
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/config/rs6000/rs6000.md
trunk/gcc/doc/extend.texi
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/extend-divide-1.c
trunk/gcc/testsuite/gcc.target/powerpc/extend-divide-2.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85101] C++17 ICE in build_over_call, at cp/call.c:8149
Date: Wed, 28 Mar 2018 20:13:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
The ICE is due to the assertion below failing.
/* In C++17 we shouldn't be copying a TARGET_EXPR except into a base
subobject. */
if (CHECKING_P && cxx_dialect >= cxx17)
gcc_assert (TREE_CODE (arg) != TARGET_EXPR
|| force_elide
/* It's from binding the ref parm to a packed field. */
|| convs[0]->need_temporary_p
|| seen_error ()
/* See unsafe_copy_elision_p. */
|| DECL_BASE_CONSTRUCTOR_P (fn));
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Subject: [Bug fortran/69497] ICE in gfc_free_namespace, at fortran/symbol.c:3701
Date: Wed, 28 Mar 2018 20:13:00 -0000
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--- Comment #8 from Mikael Morin <mikael at gcc dot gnu.org> ---
Author: mikael
Date: Wed Mar 28 20:12:55 2018
New Revision: 258935
URL: https://gcc.gnu.org/viewcvs?rev=258935&root=gcc&view=rev
Log:
PR fortran/69497
* symbol.c (gfc_symbol_done_2): Start freeing namespaces
from the root.
(gfc_free_namespace): Restore assert (revert r258839).
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/symbol.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85087] call to a non-const member function on a const lvalue accepted
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
Ever confirmed|0 |1
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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++/85092] [8 Regression] ICE under -std=gnu++1z in build_over_call under, at cp/call.c:8149
Date: Wed, 28 Mar 2018 20:17:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
CC| |msebor at gcc dot gnu.org
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the stack trace below (for the test case in comment #1). The
failing assertion is the same on as in bug 85101 so it's likely a duplicate.
pr85092.C: In constructor ‘IntSet::IntSet(int)’:
pr85092.C:4:52: internal compiler error: in build_over_call, at cp/call.c:8149
IntSet(int value) : value_{std::set<int>{value}} {}
^
0x80e3f9 build_over_call
/ssd/src/gcc/svn/gcc/cp/call.c:8143
0x814701 build_new_method_call_1
/ssd/src/gcc/svn/gcc/cp/call.c:9363
0x814ce3 build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
/ssd/src/gcc/svn/gcc/cp/call.c:9439
0x811dc8 build_special_member_call(tree_node*, tree_node*, vec<tree_node*,
va_gc, vl_embed>**, tree_node*, int, int)
/ssd/src/gcc/svn/gcc/cp/call.c:8969
0x93da93 expand_default_init
/ssd/src/gcc/svn/gcc/cp/init.c:1888
0x93e0fb expand_aggr_init_1
/ssd/src/gcc/svn/gcc/cp/init.c:2002
0x93cd0c build_aggr_init(tree_node*, tree_node*, int, int)
/ssd/src/gcc/svn/gcc/cp/init.c:1743
0x938fa4 perform_member_init
/ssd/src/gcc/svn/gcc/cp/init.c:847
0x93b4cd emit_mem_initializers(tree_node*)
/ssd/src/gcc/svn/gcc/cp/init.c:1294
0xab4d2a finish_mem_initializers(tree_node*)
/ssd/src/gcc/svn/gcc/cp/semantics.c:1704
0x9c8078 cp_parser_mem_initializer_list
/ssd/src/gcc/svn/gcc/cp/parser.c:14450
0x9c794d cp_parser_ctor_initializer_opt
/ssd/src/gcc/svn/gcc/cp/parser.c:14363
0x9d6270 cp_parser_ctor_initializer_opt_and_function_body
/ssd/src/gcc/svn/gcc/cp/parser.c:21811
0x9e0563 cp_parser_function_definition_after_declarator
/ssd/src/gcc/svn/gcc/cp/parser.c:26847
0x9e2dce cp_parser_late_parsing_for_member
/ssd/src/gcc/svn/gcc/cp/parser.c:27728
0x9d8a5f cp_parser_class_specifier_1
/ssd/src/gcc/svn/gcc/cp/parser.c:22765
0x9d8b29 cp_parser_class_specifier
/ssd/src/gcc/svn/gcc/cp/parser.c:22791
0x9cbef5 cp_parser_type_specifier
/ssd/src/gcc/svn/gcc/cp/parser.c:16776
0x9c6642 cp_parser_decl_specifier_seq
/ssd/src/gcc/svn/gcc/cp/parser.c:13631
0x9c4e1a cp_parser_simple_declaration
/ssd/src/gcc/svn/gcc/cp/parser.c:12940
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-599630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:21:23 2018
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Subject: [Bug c++/85112] [8 Regression] ICE with invalid constexpr
Date: Wed, 28 Mar 2018 20:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85112
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Known to work| |7.3.0
Ever confirmed|0 |1
Known to fail| |8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r249083 (gcc 8.0.0):
r249083 | jason | 2017-06-09 18:46:51 -0400 (Fri, 09 Jun 2017) | 5 lines
Don't fold conversion from a constant variable.
* call.c (convert_like_real): Remove "inner" parameter.
Don't replace a constant with its value.
* cp-gimplify.c (cp_fully_fold): Use cp_fold_rvalue.
>From gcc-bugs-return-599631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:25:07 2018
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Subject: [Bug c++/85108] [7/8 Regression] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
Date: Wed, 28 Mar 2018 20:25:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |6.4.0
Keywords| |diagnostic
Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Summary|Incorrect warning for |[7/8 Regression] Incorrect
|constexpr lambda with |warning for constexpr
|-Wunused-but-set-variable |lambda with
| |-Wunused-but-set-variable
Known to fail| |7.3.0, 8.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r239267 (gcc 7.0.0):
r239267 | jason | 2016-08-09 00:33:42 -0400 (Tue, 09 Aug 2016) | 7 lines
Fix empty class parameters with constexpr.
PR c++/67131
* class.c (is_really_empty_class): Call complete_type.
* constexpr.c (cxx_eval_constant_expression): Check
is_really_empty_class.
(potential_constant_expression_1): Likewise. Check for error type.
>From gcc-bugs-return-599633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:33:16 2018
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Subject: [Bug fortran/83700] [Meta-bug] Fortran Coarray issues
Date: Wed, 28 Mar 2018 20:33:00 -0000
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Bug 83700 depends on bug 83319, which changed state.
Bug 83319 Summary: [7/8 Regression] ICE on use of allocatable component in derived type coarray defined in module
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83319
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/83319] [7/8 Regression] ICE on use of allocatable component in derived type coarray defined in module
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> So, is this fixed now and can be RESOLVED FIXED?
I think so.
>From gcc-bugs-return-599634-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:41:31 2018
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Subject: [Bug c++/85110] Missing underlines for some bad arguments
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patches:
* https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01519.html
* https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01518.html
>From gcc-bugs-return-599635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 20:51:42 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85092] [8 Regression] ICE under -std=gnu++1z in build_over_call under, at cp/call.c:8149
Date: Wed, 28 Mar 2018 20:51:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-28
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Really confirmed also with the first test case, similar stack trace:
internal compiler error: in build_over_call, at cp/call.c:8149
Part(const std::int32_t& value) : value{std::to_string(value)} {}
^
0x80e3f9 build_over_call
/ssd/src/gcc/svn/gcc/cp/call.c:8143
0x814701 build_new_method_call_1
/ssd/src/gcc/svn/gcc/cp/call.c:9363
...
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Subject: [Bug c++/85107] Internal compiler error when casting double to int
Date: Wed, 28 Mar 2018 20:55:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
With the top of trunk (258935) I get:
$ cat pr85107.C && gcc -S pr85107.C
double dbDivisor{ 1.0 };
double dbQuotient{ static_cast<int>(1.0 / dbDivisor) };
pr85107.C:2:20: warning: narrowing conversion of ‘(int)(1.0e+0 / dbDivisor)’
from ‘int’ to ‘double’ inside { } [-Wnarrowing]
double dbQuotient{ static_cast<int>(1.0 / dbDivisor) };
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
With r258676 I see the SEGV below. The stack trace suggests infinite recursion
in the pretty-printer.
Program received signal SIGSEGV, Segmentation fault.
0x000000000089d204 in cxx_pretty_printer::unary_expression (
this=<error reading variable: Cannot access memory at address
0x7ffffbffefd8>, t=<error reading variable: Cannot access memory at address
0x7ffffbffefd0>)
at ../../gcc/cp/cxx-pretty-print.c:754
754 {
I'm pretty sure this is a duplicate of bug 85045 (backing out the patch brings
the SEGV back). If not, please reopen.
*** This bug has been marked as a duplicate of bug 85045 ***
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Subject: [Bug c++/85045] [8 Regression] ICE+SIGILL on valid C++ code: cxx_pretty_printer::postfix_expression(tree_node*) (), at cp/cxx-pretty-print.c:482
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85045
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |schlong at cock dot li
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 85107 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 21:11:29 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++/85011] GCC complains that 2 identical function prototypes are different
Date: Wed, 28 Mar 2018 21:11:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I'll confirm this as rejects-valid. I didn't take the time to look it up in
the standard but since the non-template case below is accepted I would expect
the template case to be as well. It doesn't appear to be a regression.
struct foo
{
int x;
auto f1() -> decltype (x);
};
auto foo::f1() -> decltype (this->x) {}
>From gcc-bugs-return-599639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 21:20:31 2018
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From: "tk at giga dot or.at" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85114] New: -fstack-check causes internal compiler error
Date: Wed, 28 Mar 2018 21:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85114
Bug ID: 85114
Summary: -fstack-check causes internal compiler error
Product: gcc
Version: 6.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tk at giga dot or.at
Target Milestone: ---
When compiling thunderbird 52.7.0 (currently latest version) with gcc 6.4.0 as
distributed with NetBSD, on NetBSD-8.99.14/amd64, with -fstack-check, I see the
following error:
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:11:0:
/scratch/mail/thunderbird/work/thunderbird-52.6.0/mozilla/layout/generic/nsBlockFrame.cpp:
In member function 'virtual nscoord
nsBlockFrame::GetMinISize(nsRenderingContext*)':
/scratch/mail/thunderbird/work/thunderbird-52.6.0/mozilla/layout/generic/nsBlockFrame.cpp:704:1:
internal compiler error: in refs_may_alias_p_1, at tree-ssa-alias.c:1429
nsBlockFrame::GetMinISize(nsRenderingContext *aRenderingContext)
^~~~~~~~~~~~
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
/scratch/mail/thunderbird/work/thunderbird-52.6.0/mozilla/config/rules.mk:951:
recipe for target 'Unified_cpp_layout_generic1.o' failed
When I removed the -fstack-check, the internal compiler error is gone and I
see:
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:101:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:
In member function ‘nscoord nsIFrame::ComputeISizeValue(nsRenderingContext*,
nscoord, nscoord, nscoord, const nsStyleCoord&, nsIFrame::ComputeSizeFlags)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:5434:11:
warning: ‘result’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
nscoord result;
^~~~~~
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:101:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:
In member function ‘mozilla::LogicalSize
nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext*,
mozilla::WritingMode, const mozilla::IntrinsicSize&, nsSize, const
mozilla::LogicalSize&, const mozilla::LogicalSize&, const
mozilla::LogicalSize&, const mozilla::LogicalSize&,
nsIFrame::ComputeSizeFlags)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:5006:38:
warning: ‘bSize’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
nscoord iSize, minISize, maxISize, bSize, minBSize, maxBSize;
^~~~~
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:5006:11:
warning: ‘iSize’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
nscoord iSize, minISize, maxISize, bSize, minBSize, maxBSize;
^~~~~
In file included from
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsBackdropFrame.cpp:11:0,
from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:2:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/base/nsDisplayList.h:
In member function ‘void
nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder*, const
nsRect&, nsDisplayList*)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/base/nsDisplayList.h:1115:33:
warning: ‘*((void*)(&
autoPreserves3DContext)+8).nsDisplayListBuilder::AutoPreserves3DContext::mBuilder’
may be used uninitialized in this function [-Wmaybe-uninitialized]
mBuilder->mPreserves3DCtx = mSavedCtx;
~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:101:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:2136:55:
note: ‘*((void*)(&
autoPreserves3DContext)+8).nsDisplayListBuilder::AutoPreserves3DContext::mBuilder’
was declared here
Maybe<nsDisplayListBuilder::AutoPreserves3DContext> autoPreserves3DContext;
^~~~~~~~~~~~~~~~~~~~~~
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:74:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFlexContainerFrame.cpp:
In member function ‘void nsFlexContainerFrame::DoFlexLayout(nsPresContext*,
nsIFrame::ReflowOutput&, const ReflowInput&, nsReflowStatus&, nscoord, nscoord,
nsTArray<nsFlexContainerFrame::StrutInfo>&, const
nsFlexContainerFrame::FlexboxAxisTracker&)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFlexContainerFrame.cpp:4485:29:
warning: ‘flexContainerAscent’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
if (item == firstItem &&
~~~~~~~~~~~~~~~~~~^~
flexContainerAscent == nscoord_MIN) {
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Here's the command line:
c++ -save-temps -std=gnu++11 -o Unified_cpp_layout_generic1.o -c
-I/scratch/mail/thunderbird/work/build/dist/stl_wrappers
-I/scratch/mail/thunderbird/work/build/dist/system_wrappers -include
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/config/gcc_hidden.h
-DNDEBUG=1 -DTRIMMED=1 -DOS_POSIX=1 -DOS_NETBSD=1 -DOS_BSD=1
-DSTATIC_EXPORTABLE_JS_API -DMOZ_HAS_MOZGLUE -DMOZILLA_INTERNAL_API
-DIMPL_LIBXUL
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic
-I/scratch/mail/thunderbird/work/build/layout/generic
-I/scratch/mail/thunderbird/work/build/ipc/ipdl/_ipdlheaders
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/chromium/src
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/glue
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/plugins/base
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/base
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/forms
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/style
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/svg
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/tables
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/xul
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/base
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/html
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/xul
-I/scratch/mail/thunderbird/work/build/dist/include -I/usr/pkg/include/nspr
-I/usr/pkg/include/nss -I/usr/pkg/include/nspr -I/usr/pkg/include/pixman-1
-fPIC -DPIC -DMOZILLA_CLIENT -include
/scratch/mail/thunderbird/work/build/mozilla-config.h -MD -MP -MF
.deps/Unified_cpp_layout_generic1.o.pp -g -I/usr/include -I/usr/pkg/include
-I/usr/pkg/include/nspr -I/usr/pkg/include/nss/nss -I/usr/pkg/include/libdrm
-I/usr/pkg/include/freetype2 -I/usr/pkg/include/glib/glib-2.0
-I/usr/pkg/include/glib/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/pkg/include/ffmpeg3 -Wall -Wc++11-compat -Wempty-body
-Wignored-qualifiers -Woverloaded-virtual -Wpointer-arith -Wsign-compare
-Wtype-limits -Wunreachable-code -Wwrite-strings -Wno-invalid-offsetof
-Wc++14-compat -Wno-error=maybe-uninitialized
-Wno-error=deprecated-declarations -Wno-error=array-bounds -fno-lifetime-dse
-O2 -g -D_FORTIFY_SOURCE=2 -fstack-check -I/usr/include -I/usr/pkg/include
-I/usr/pkg/include/nspr -I/usr/pkg/include/nss/nss -I/usr/pkg/include/libdrm
-I/usr/pkg/include/freetype2 -I/usr/pkg/include/glib/glib-2.0
-I/usr/pkg/include/glib/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/pkg/include/ffmpeg3 -fno-exceptions -fno-strict-aliasing -Dunix
-fno-rtti -fno-exceptions -fno-math-errno -pthread -pipe -I/usr/pkg/include -g
-O2 -fomit-frame-pointer -I/usr/pkg/include/cairo -I/usr/pkg/include/pixman-1
-I/usr/pkg/include -I/usr/pkg/include/freetype2 -I/usr/pkg/include/uuid
-I/usr/pkg/include/libpng16 -D_REENTRANT -I/usr/pkg/include/cairo
-I/usr/pkg/include/pixman-1 -I/usr/pkg/include -I/usr/pkg/include/freetype2
-I/usr/pkg/include/uuid -I/usr/pkg/include/libpng16 -D_REENTRANT
-I/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/widget/gtk/compat-gtk3
-I/usr/pkg/include/gtk-3.0 -I/usr/pkg/include/pango-1.0
-I/usr/pkg/include/glib/glib-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/pkg/include -I/usr/pkg/include/cairo -I/usr/pkg/include/pixman-1
-I/usr/pkg/include/freetype2 -I/usr/pkg/include/uuid
-I/usr/pkg/include/libpng16 -I/usr/pkg/include/harfbuzz
-I/usr/pkg/include/gdk-pixbuf-2.0 -D_REENTRANT
-I/usr/pkg/include/glib/gio-unix-2.0/ -D_REENTRANT -I/usr/pkg/include/atk-1.0
-I/usr/pkg/include/at-spi2-atk/2.0 -I/usr/pkg/include/at-spi-2.0
-I/usr/pkg/include/dbus-1.0 -I/usr/pkg/lib/dbus-1.0/include
-I/usr/pkg/include/gtk-3.0/unix-print -D_REENTRANT -D_REENTRANT -D_REENTRANT
-D_REENTRANT -pthread -Wno-error=shadow
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp
The .ii file is 10MB. gzipped it is still 1,5MB which is larger than the
attachment limit. So I've uploaded it here:
http://danbala.tuwien.ac.at/~wiz/tmp/Unified_cpp_layout_generic1.ii.gz
I've also reported this at NetBSD's GNATS at
https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=53139
>From gcc-bugs-return-599640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 21:27:17 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++/84993] Combination of fieldnames and accessor suggestions for misspelled private fields
Date: Wed, 28 Mar 2018 21:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84993
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I noticed this while experimenting with the suggestions. Your idea sounds like
a definite improvement.
As an aside, the error uses the term "member" in accordance with the standard
terminology (both C and C++) but the note refers to the field 'double
foo::m_ratio' It would be more consistent to use "member" in both.
>From gcc-bugs-return-599641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 21:41:08 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 libstdc++/84930] Brace-closed initialization of cstring (i.e."abcdefghi") to coresponding aggregate types fails in certain situation
Date: Wed, 28 Mar 2018 21:41:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-28
CC| |msebor at gcc dot gnu.org
Component|c++ |libstdc++
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm that GCC rejects the example and Clang accepts it but I don't
know if that's because of a bug/missing feature in GCC or libstdc++ or an
extension in Clang or libc++. Let me set the component to libstdc++ and let
Jonathan adjust it if/as necessary.
>From gcc-bugs-return-599642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 22:01:14 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++/84733] [8 Regression] internal compiler error: Segmentation fault (check_local_shadow())
Date: Wed, 28 Mar 2018 22:01:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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>From gcc-bugs-return-599644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 22:11:23 2018
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Subject: [Bug tree-optimization/85115] New: Failure to (auto)vectorize sqrtf
Date: Wed, 28 Mar 2018 22:11:00 -0000
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Bug ID: 85115
Summary: Failure to (auto)vectorize sqrtf
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Fails to (auto)vectorize the code bellow with the flags
-O3 -mavx
#include <cmath>
void simdSqrt(
float * __restrict__ a,
float * __restrict__ res,
int size)
{
int i;
float *aAligned = (float*)__builtin_assume_aligned(a, 32);
float *resAligned = (float*)__builtin_assume_aligned(res, 32);
for (i = 0; i < size; i++) {
resAligned[i] = sqrtf(aAligned[i]);
}
}
produces (as displayed by https://godbolt.org/)
simdSqrt(float*, float*, int):
test edx, edx
jle .L8
lea eax, [rdx-1]
push r12
vxorps xmm2, xmm2, xmm2
lea r12, [rdi+4+rax*4]
sub rsp, 32
.L3:
vmovss xmm0, DWORD PTR [rdi]
vucomiss xmm2, xmm0
vsqrtss xmm1, xmm1, xmm0
ja .L12
add rdi, 4
vmovss DWORD PTR [rsi], xmm1
add rsi, 4
cmp rdi, r12
jne .L3
.L6:
add rsp, 32
pop r12
ret
.L8:
rep ret
.L12:
vmovss DWORD PTR [rsp+28], xmm2
mov QWORD PTR [rsp+16], rsi
mov QWORD PTR [rsp+8], rdi
vmovss DWORD PTR [rsp+24], xmm1
call sqrtf
mov rdi, QWORD PTR [rsp+8]
mov rsi, QWORD PTR [rsp+16]
vmovss xmm1, DWORD PTR [rsp+24]
vmovss xmm2, DWORD PTR [rsp+28]
add rdi, 4
vmovss DWORD PTR [rsi], xmm1
add rsi, 4
cmp rdi, r12
jne .L3
jmp .L6
>From gcc-bugs-return-599645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 22:17:47 2018
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Subject: [Bug c/84883] No warning when dereferencing an array as a pointer
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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Severity|normal |enhancement
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Here's how I think this enhancement could work. For every access to the first
element of an array via the -> operator the warning would look for a pointer
with a similar name that either a) points to the first element of the same
array object, or b) has the same type as the array, and trigger if it found a
match. (a) requires data flow analysis so the warning would have be
implemented in the middle-end. I don't think the middle-end has access to the
algorithm that compares names for similarity so it would have to move. (b)
could be implemented in the C/C++ front ends which do have access to the
algorithm but not to data flow analysis, so the warning there would be quite
simplistic (basically limited to type and name matching) and could be prone to
false positives.
I'm not sure how often this problem comes up but given the complexities above I
suspect the RoI may not be there.
>From gcc-bugs-return-599646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 22:28:10 2018
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Subject: [Bug tree-optimization/84818] integer_onep must not be used for i18n
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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.
>From gcc-bugs-return-599647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 23:17:42 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
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Carl Love <carll at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #12 from Carl Love <carll at gcc dot gnu.org> ---
Commit 258942 removed the builtins for __builtin_fctid and __builtin_fctiw
>From gcc-bugs-return-599648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 28 23:22:37 2018
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Subject: [Bug target/84422] ICE on various builtin test functions when compiled with -mcpu=power7
Date: Wed, 28 Mar 2018 23:22:00 -0000
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Carl Love <carll at gcc dot gnu.org> changed:
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--- Comment #6 from Carl Love <carll at gcc dot gnu.org> ---
gcc/testsuite/gcc.target/powerpc/builtin-fctid-fctiw-runnable.c
was fixed by reverting the patch that added them. Commit 258492
gcc/testsuite/gcc.target/powerpc/sse2-pmuludq-1.c
was fixed by commit 258539
At this point all of the test cases that were generating and ICE for
-mcpu=power7 have been fixed.
Closing the issue.
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Subject: [Bug testsuite/82920] cet test failures on darwin
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #0)
Maybe these tests should be limited to Linux targets.
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Alan Modra <amodra at gmail dot com> changed:
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84930] Brace-closed initialization of cstring (i.e."abcdefghi") to coresponding aggregate types fails in certain situation
Date: Wed, 28 Mar 2018 23:49:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|libstdc++ |c++
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a front-end bug not library bug, the failing cases can be reduced to:
struct array { char data[10]; };
struct A {
array x;
A(array arr) : x(arr) {}
};
A struct_from_ctr1{ {{"abcdefghi"}} };
Or even more simply:
struct array { char data[2]; };
void f(array) {}
void g() {
f({{"a"}});
}
>From gcc-bugs-return-599652-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 00:07:08 2018
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Subject: [Bug target/84912] __builtin_divde* produce Internal Compiler Error when compiled -m32
Date: Thu, 29 Mar 2018 00:07:00 -0000
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--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Thu Mar 29 00:06:31 2018
New Revision: 258943
URL: https://gcc.gnu.org/viewcvs?rev=258943&root=gcc&view=rev
Log:
PR target/84912
* config/rs6000/rs6000.h (RS6000_BTM_POWERPC64): New define.
(RS6000_BTM_COMMON): Add RS6000_BTM_POWERPC64.
* config/rs6000/rs6000.c (rs6000_builtin_mask_calculate): Add support
for RS6000_BTM_POWERPC64.
(rs6000_invalid_builtin): Add handling for RS6000_BTM_POWERPC64
(rs6000_builtin_mask_names): Add RS6000_BTM_POWERPC64.
* config/rs6000/rs6000-builtin.def (BU_P7_POWERPC64_MISC_2): New macro
definition.
(DIVDE): Use it.
(DIVDEU): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000-builtin.def
trunk/gcc/config/rs6000/rs6000.c
trunk/gcc/config/rs6000/rs6000.h
>From gcc-bugs-return-599653-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 00:09:43 2018
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Subject: [Bug target/84912] __builtin_divde* produce Internal Compiler Error when compiled -m32
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed on trunk. Do we want backports?
>From gcc-bugs-return-599654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 00:54:45 2018
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Subject: [Bug target/84033] powerpc64le -moptimize-swaps bad code with vec_vbpermq
Date: Thu, 29 Mar 2018 00:54:00 -0000
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--- Comment #8 from Alan Modra <amodra at gmail dot com> ---
Hi Breno, the first gcc-8 has not yet been released (current aim is for a
release mid April), nor has there been a release from the gcc-7 or gcc-6
branches containing this bug fix. I missed out on gcc-7.3 by a few days.
Incidentally, https://gcc.gnu.org/develop.html#timeline is a useful page giving
history of gcc releases.
>From gcc-bugs-return-599655-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 01:17:55 2018
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From: "christopher.schell at oculus dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85116] New: std::min_element does not optimize well with inlined predicate
Date: Thu, 29 Mar 2018 01:17:00 -0000
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Bug ID: 85116
Summary: std::min_element does not optimize well with inlined
predicate
Product: gcc
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According to godbolt (https://godbolt.org/g/igzsnL), the following code:
#define SIZE 1000
std::array<double, SIZE> testArray;
int getMinIdxCPPStyle(double offset)
{
auto minElement = std::min_element(std::cbegin(testArray),
std::cend(testArray), [offset](auto a, auto b) { return std::abs(a - offset) <
std::abs(b - offset); });
return std::distance(std::cbegin(testArray), minElement );
}
generates as the following under -O3
getMinIdxCPPStyle(double):
movq xmm3, QWORD PTR .LC1[rip]
mov eax, OFFSET FLAT:testArray
mov edx, OFFSET FLAT:testArray+8
.L11:
movsd xmm1, QWORD PTR [rdx]
movsd xmm2, QWORD PTR [rax]
subsd xmm1, xmm0
subsd xmm2, xmm0
andpd xmm1, xmm3
andpd xmm2, xmm3
ucomisd xmm2, xmm1
cmova rax, rdx
add rdx, 8
cmp rdx, OFFSET FLAT:testArray+8000
jne .L11
sub rax, OFFSET FLAT:testArray
sar rax, 3
ret
The problem being that the typical c-style loop beats this easily due to
caching the minimum value and not fetching it and recomputing it. Is there a
reason that the generated code should not cache the minimum value in a register
instead of probably causing a cache miss by fetching it and then unnecessarily
running the computations on it again?
>From gcc-bugs-return-599656-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 01:19:46 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
Date: Thu, 29 Mar 2018 01:19:00 -0000
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--- Comment #5 from Nathaniel J. Smith <njs at pobox dot com> ---
Julian, are you able to test the patch? I don't have a reproduction setup
currently...
>From gcc-bugs-return-599657-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 01:53:04 2018
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Subject: [Bug driver/84750] Both the driver and cc1 warn for Target Warn option properties
Date: Thu, 29 Mar 2018 01:53:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-29
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with a powepc64le cross:
$ gcc -S -mstring -xc - < /dev/null
xgcc: warning: ‘-mstring’ is deprecated
cc1: warning: ‘-mstring’ is deprecated
With a native x86_64 gcc:
$ gcc -S -mpcommit -xc - < /dev/null
xgcc: warning: ‘-mpcommit’ was deprecated
cc1: warning: ‘-mpcommit’ was deprecated
>From gcc-bugs-return-599658-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 02:01:05 2018
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Subject: [Bug c++/84701] casting to ( unsigned typeof(variable) ) gives wrong results
Date: Thu, 29 Mar 2018 02:01:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-03-29
CC| |msebor at gcc dot gnu.org
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
It's diagnosed with -Wpedantic (ditto for decltype). Agreed that it should be
rejected in C++ just like it is in C.
$ cat pr84701.C && gcc -S -Wall -Wextra -Wpedantic pr84701.C
typedef short foo_t;
foo_t s = -1; /* FFFF */
unsigned u = (unsigned foo_t)s; /* result is FFFF */
unsigned v = (unsigned typeof(s))s; /* result is FFFFFFFF */
pr84701.C:4:24: warning: long, short, signed or unsigned used invalidly for
‘type name’ [-Wpedantic]
unsigned u = (unsigned foo_t)s; /* result is FFFF */
^~~~~
pr84701.C:5:32: warning: long, short, signed or unsigned used invalidly for
‘type name’ [-Wpedantic]
unsigned v = (unsigned typeof(s))s; /* result is FFFFFFFF */
^
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/83707] g++.dg/eh/simd-3.C fails on power7 -m32
Date: Thu, 29 Mar 2018 03:16:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-29
Ever confirmed|0 |1
--- Comment #4 from Alan Modra <amodra at gmail dot com> ---
Here's some analysis.
Yes, with -O, variable v1 is indeed in a register, v31 aka vs63 before the call
to thrower. This should be fine. Variables don't need to be in memory for
exceptions to work..
thrower() sets up a frame
stwu 1,-288(1)
stores the vector reg of interest to the stack
li 0,208
stvx 31,1,0
and accurately describes that save with
.cfi_offset 108, -80
At -O, thrower() indeed uses the non-volatile v20..v31, and doesn't restore the
saved values itself. That's all good. We are relying on the exception
handling mechanism, ie. frame unwinding to restore the value of v31.
With 8.0.1 20180322 the test passes for me at -O -maltivec -m32 -mcpu=power7,
with LD_LIBRARY_PATH set to pick up the newly built libstdc++ and libgcc. So
perhaps the problem has been fixed, or maybe you were somehow picking up a bad
version of the unwinder?
Note that my build was with --build=powerpc64-linux --prefix=/home/amodra/gnu
--with-cpu=power8 --enable-valgrind-annotations --enable-gnu-indirect-functions
--enable-__cxa-exit --enable-secure-plt --disable-nls --enable-languages=all
--enable-lto
I'm also using bleeding edge binutils.
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Subject: [Bug c++/85117] New: ARM: Wrong Warning Emits: parameter passing for argument of type 'Handle<Unknown>' changed in GCC 7.1
Date: Thu, 29 Mar 2018 03:32:00 -0000
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Bug ID: 85117
Summary: ARM: Wrong Warning Emits: parameter passing for
argument of type 'Handle<Unknown>' changed in GCC 7.1
Product: gcc
Version: 7.2.0
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typedef enum { } Unknown;
class HandleBase {
public:
void** m_slot;
};
template<typename T> struct HandleTypes {
typedef T* ExternalType;
};
template<> struct HandleTypes<Unknown> {
typedef long long ExternalType;
};
template <class T>
class Handle: public HandleBase {
public:
typedef typename HandleTypes<T>::ExternalType ExternalType;
};
void foo(Handle<Unknown> h) {
extern void bar(Handle<Unknown> h);
bar(h);
}
The above code emits wrong warning like the title.
This is caused by arm_needs_doubleword_align fails to omit TYPE_DECL when
traversals the fields of a aggregate type.
>From gcc-bugs-return-599661-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 05:05:03 2018
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Subject: [Bug libstdc++/68222] _Safe_iterator provides operators the wrapped iterator can't actually support
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François Dumont <fdumont at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599662-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 06:21:56 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #2)
> I think this is on purpose and unlikely to change.
No, __builtin_cpu_supports is used to enable parts that are able to execute
relevant instructions. So, HJ's patch is the way to go.
>From gcc-bugs-return-599663-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 06:23:30 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.5
Severity|enhancement |normal
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
We need this in all release branches.
>From gcc-bugs-return-599664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 06:32:20 2018
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
Comment on attachment 43793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43793
A patch
>+ if ((ecx & bit_OSXSAVE))
>+ {
>+ /* Check if XMM state and YMM state are saved. */
>+ unsigned int xcrlow;
>+ unsigned int xcrhigh;
>+ asm ("xgetbv" : "=a" (xcrlow), "=d" (xcrhigh) : "c" (0));
>+ if ((xcrlow & 0x6) == 0x6)
Please use .byte stream instead of xgetbv mnemonic (libgcc can be compiled with
an assembler that doesn't support xgetbv. Actually, you can just copy the part
from driver-i386.c, preferrably also with #defines instead of magic numbers.
>From gcc-bugs-return-599665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 07:29:39 2018
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From: "tim.ruehsen at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/84883] No warning when dereferencing an array as a pointer
Date: Thu, 29 Mar 2018 07:29:00 -0000
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--- Comment #2 from Tim Ruehsen <tim.ruehsen at gmx dot de> ---
(In reply to Martin Sebor from comment #1)
> (b) could be implemented in the C/C++ front ends which do have access
> to the algorithm but not to data flow analysis, so the warning there would
> be quite simplistic (basically limited to type and name matching) and could
> be prone to false positives.
If someone makes up a patch and give it to me, I can take the time to test with
a decent amount of projects. So that we can get figures about how often the bug
triggers and how many false positives there are.
Without this, you are guessing. And I meanwhile had two occurrences where such
an option would have saved several hours of work.
>From gcc-bugs-return-599666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 08:26:58 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/85116] std::min_element does not optimize well with inlined predicate
Date: Thu, 29 Mar 2018 08:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-29
CC| |rguenth at gcc dot gnu.org
Component|c++ |libstdc++
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Eventually std::min_element can be improved directly but this is a missed
optimization as well. A similar C testcase is optimized by PRE:
int getMinIdx (double *a, int n, double off)
{
double *min = a;
for (double *first = a; first < a + n; first++)
{
if (__builtin_fabs (*min - off) > __builtin_fabs (*first - off))
min = first;
}
return min - a;
}
while the C++ testcase ends up in PRE like the following where likely
the extra PHI for __first_2[23] confuse things. DOM introduces that
by threading the first iteration comparison, avoiding that doesn't seem
to help though. Ah, it's because the loop isn't header-copied, it says
"Loop 1 is do-while loop" but given the load from __result happens after
the exit test it isn't partially redundant across the backedge.
<bb 2> [15.00%]:
goto <bb 4>; [100.00%]
<bb 8> [42.50%]:
<bb 3> [85.00%]:
# __result_17 = PHI <__result_24(8), __first_23(5)>
__first_9 = __first_23 + 8;
if (__first_9 != &MEM[(void *)&testArray + 8000B])
goto <bb 7>; [82.35%]
else
goto <bb 6>; [17.65%]
<bb 7> [70.00%]:
<bb 4> [85.00%]:
# __first_22 = PHI <__first_23(7), &testArray._M_elems(2)>
# __first_23 = PHI <__first_9(7), &MEM[(void *)&testArray + 8B](2)>
# __result_24 = PHI <__result_17(7), &testArray._M_elems(2)>
_10 = MEM[(const double *)__first_22 + 8B];
_12 = *__result_24;
_13 = _10 - offset_2(D);
_14 = ABS_EXPR <_13>;
_15 = _12 - offset_2(D);
_16 = ABS_EXPR <_15>;
if (_14 < _16)
goto <bb 5>; [50.00%]
else
goto <bb 8>; [50.00%]
<bb 5> [42.50%]:
goto <bb 3>; [100.00%]
<bb 6> [15.00%]:
__last.3_6 = (long int) __result_17;
__first.4_5 = (long int) &testArray._M_elems;
_4 = __last.3_6 - __first.4_5;
_3 = _4 /[ex] 8;
_7 = (int) _3;
return _7;
So improving libstd++ would be nice here, resp.
template<typename _ForwardIterator, typename _Compare>
_GLIBCXX14_CONSTEXPR
_ForwardIterator
__min_element(_ForwardIterator __first, _ForwardIterator __last,
_Compare __comp)
{
if (__first == __last)
return __first;
_ForwardIterator __result = __first;
while (++__first != __last)
if (__comp(__first, __result))
__result = __first;
return __result;
}
change that to
if (__first == __last)
return __first;
++_first;
if (__first == __last)
return __first;
_ForwardIterator __result = __first;
do
{
if (__comp(__first, __result))
__result = __first;
}
whule (++_first != _last);
return __result;
do-while style loops are always better for optimization.
Of course the issue is that loop-header copying doesn't do this transform,
it's do-while loop detection is a bit too simplistic...
Fixing that leads CH itself introduce that weird third PHI node :/
Index: gcc/tree-ssa-loop-ch.c
===================================================================
--- gcc/tree-ssa-loop-ch.c (revision 258915)
+++ gcc/tree-ssa-loop-ch.c (working copy)
@@ -176,6 +176,22 @@ do_while_loop_p (struct loop *loop)
"header contains just condition.\n", loop->num);
return false;
}
+
+ if (edge e = single_exit (loop))
+ {
+ if (e->src == loop->header
+ && (!single_pred_p (loop->latch)
+ || single_pred (loop->latch) != loop->header))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file,
+ "Loop %i is not do-while loop: "
+ "header contains single exit test but isn't latch.\n",
+ loop->num);
+ return false;
+ }
+ }
+
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Loop %i is do-while loop\n", loop->num);
@@ -409,7 +425,8 @@ unsigned int
pass_ch::execute (function *fun)
{
loop_optimizer_init (LOOPS_HAVE_PREHEADERS
- | LOOPS_HAVE_SIMPLE_LATCHES);
+ | LOOPS_HAVE_SIMPLE_LATCHES
+ | LOOPS_HAVE_RECORDED_EXITS);
unsigned int res = copy_headers (fun);
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Subject: [Bug tree-optimization/85115] Failure to (auto)vectorize sqrtf
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
You need -fno-math-errno to vectorize this given we cannot vectorize the
side-effect of setting errno for negative inputs.
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----------------------------------------------------------------------------
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Subject: [Bug rtl-optimization/84058] [8 Regression] RTl partitioning fixup should drag very small blocks back to hot partition
Date: Thu, 29 Mar 2018 08:39:00 -0000
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--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I would not call it P1 - it is relatively minor code quality issue, but i will
look into it next week.
Honza
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Subject: [Bug c++/85114] -fstack-check causes internal compiler error
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----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-03-29
CC| |rguenth at gcc dot gnu.org
Host| |x86_64-netbsd
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can't reproduce this with FSF 6.4.0 on x86_64-linux. Can you provide the
output of the compiler command with -v appended so we can see exact revs and
flags passed?
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Subject: [Bug c++/85108] [7/8 Regression] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
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Subject: [Bug c++/85112] [8 Regression] ICE with invalid constexpr
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Subject: [Bug c++/84606] [8 Regression] internal compiler error: Segmentation fault (enclosing_instantiation_of())
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--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Mar 29 08:43:43 2018
New Revision: 258947
URL: https://gcc.gnu.org/viewcvs?rev=258947&root=gcc&view=rev
Log:
2018-03-29 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84606
* g++.dg/cpp0x/pr84606.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr84606.C
Modified:
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599674-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 08:44:45 2018
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Subject: [Bug c++/84606] [8 Regression] internal compiler error: Segmentation fault (enclosing_instantiation_of())
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Already fixed in trunk.
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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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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
So I rewrote it to a shell script:
$ cat ./todo.sh
ASAN_FLAGS_COMMON="-fsanitize=address -fuse-ld=gold -fno-omit-frame-pointer -g
-O2"
CC=gcc-7
CXX=g++-7
sudo bash -c 'cat odbc_extra_config >> /etc/odbcinst.ini'
cd "$(mktemp -d)"
wget -qO-
https://github.com/ribasushi/patchup-Firebird-ODBC-driver/archive/2.0.2.153.tar.gz
| tar -zx --strip-components 1
cd Builds/Gcc.lin
perl -p -i -e "s{/usr/lib64}{/usr/lib/x86_64-linux-gnu}g"
../makefile.environ
perl -p -i -e "s{major\".\"minor\".\"buildnum}{major \".\" minor \".\"
buildnum}" ../../SetupAttributes.h
perl -p -i -e "s{^GCC\s*\=\s*g\+\+$}{GCC = $CXX $ASAN_FLAGS_COMMON}"
makefile.linux
make -f makefile.linux
sudo make -f makefile.linux install
I don't know the first 'cpanm -nv DBD::ODBC' in .yml file, but I guess it's
install of perf module right? I should have that installed.
Running the script, I get:
bash -x ./todo.sh
+ ASAN_FLAGS_COMMON='-fsanitize=address -fuse-ld=gold -fno-omit-frame-pointer
-g -O2'
+ CC=gcc-7
+ CXX=g++-7
+ sudo bash -c 'cat odbc_extra_config >> /etc/odbcinst.ini'
++ mktemp -d
+ cd /tmp/tmp.rnbhzid2yL
+ wget -qO-
https://github.com/ribasushi/patchup-Firebird-ODBC-driver/archive/2.0.2.153.tar.gz
+ tar -zx --strip-components 1
+ cd Builds/Gcc.lin
+ perl -p -i -e 's{/usr/lib64}{/usr/lib/x86_64-linux-gnu}g' ../makefile.environ
+ perl -p -i -e 's{major"."minor"."buildnum}{major "." minor "." buildnum}'
../../SetupAttributes.h
+ perl -p -i -e 's{^GCC\s*\=\s*g\+\+$}{GCC = g++-7 -fsanitize=address
-fuse-ld=gold -fno-omit-frame-pointer -g -O2}' makefile.linux
+ make -f makefile.linux
../makefile.environ:12: ARCH is x86_64
../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
../makefile.environ:54: *** FBINCDIR is undefined. Stop.
+ sudo make -f makefile.linux install
../makefile.environ:12: ARCH is x86_64
../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
../makefile.environ:54: *** FBINCDIR is undefined. Stop.
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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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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
--- Comment #8 from Peter Rabbitson <ribasushi at leporine dot io> ---
On 03/29/2018 10:57 AM, marxin at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
>
> --- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
> So I rewrote it to a shell script:
>
> ...
>
> I don't know the first 'cpanm -nv DBD::ODBC' in .yml file, but I guess it's
> install of perf module right? I should have that installed.
Correct this is installing the perl module DBD::ODBC ( which will
install its dependency DBI ). This is the only way I know how to trigger
the condition ( there obviously would be other ways, but this is what I
know ).
> + make -f makefile.linux
> ../makefile.environ:12: ARCH is x86_64
> ../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
> ../makefile.environ:54: *** FBINCDIR is undefined. Stop.
> + sudo make -f makefile.linux install
> ../makefile.environ:12: ARCH is x86_64
> ../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
> ../makefile.environ:54: *** FBINCDIR is undefined. Stop.
>
You need the firebird libs installed so that the odbc driver can link to
them. This line:
https://github.com/ribasushi/gcc_asan_internal_fail/commit/191e08bab67#diff-354f30a63fb0907d4ad57269548329e3R20
Let me know if you run into more difficulties
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Subject: [Bug lto/84934] Installing the lto plugin where binutils will look for it
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 70345 ***
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Subject: [Bug lto/70345] Installing liblto_plugin under $LIBDIR/bfd-plugins
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
*** Bug 84934 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/84826] ICE in extract_insn, at recog.c:2304 on arm-linux-gnueabi
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sudi at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |6.4.1, 7.3.1
--- Comment #12 from sudi at gcc dot gnu.org ---
The same failure is happening on gcc-7 and gcc-6 with -fstack-check. Have sent
a backport request
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Subject: [Bug target/84826] ICE in extract_insn, at recog.c:2304 on arm-linux-gnueabi
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--- Comment #13 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Thu Mar 29 09:19:45 2018
New Revision: 258948
URL: https://gcc.gnu.org/viewcvs?rev=258948&root=gcc&view=rev
Log:
[ARM][PR target/84826] Fix ICE in extract_insn, at recog.c:2304 on
arm-linux-gnueabihf
This patch backports r258777 and r258805 to gcc-7-branch
and gcc-6-branch. The same ICE occurs in both the branches with
-fstack-check. Thus the test case directive has been changed.
The discussion on the patch that went into trunk is:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01120.html
ChangeLog entries:
*** gcc/ChangeLog ***
2018-03-29 Sudakshina Das <sudi.das@arm.com>
Backport from mainline
2018-03-22 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* config/arm/arm.h (machine_function): Add static_chain_stack_bytes.
* config/arm/arm.c (arm_compute_static_chain_stack_bytes): Avoid
re-computing once computed.
(arm_expand_prologue): Compute machine->static_chain_stack_bytes.
(arm_init_machine_status): Initialize
machine->static_chain_stack_bytes.
*** gcc/testsuite/ChangeLog ***
2018-03-29 Sudakshina Das <sudi.das@arm.com>
* gcc.target/arm/pr84826.c: Change dg-option to -fstack-check.
Backport from mainline
2018-03-23 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* gcc.target/arm/pr84826.c: Add dg directive.
Backport from mainline
2018-03-22 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* gcc.target/arm/pr84826.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/arm/pr84826.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/arm/arm.c
branches/gcc-7-branch/gcc/config/arm/arm.h
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug testsuite/85106] Add scan-ltrans-tree-dump and scan-wpa-ipa-dump
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
patches submitted for scan-ltrans-tree-dump and scan-wpa-ipa-dump @
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01528.html
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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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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Peter Rabbitson from comment #8)
> On 03/29/2018 10:57 AM, marxin at gcc dot gnu.org wrote:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
> >
> > --- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
> > So I rewrote it to a shell script:
> >
> > ...
> >
> > I don't know the first 'cpanm -nv DBD::ODBC' in .yml file, but I guess it's
> > install of perf module right? I should have that installed.
>
> Correct this is installing the perl module DBD::ODBC ( which will
> install its dependency DBI ). This is the only way I know how to trigger
> the condition ( there obviously would be other ways, but this is what I
> know ).
>
> > + make -f makefile.linux
> > ../makefile.environ:12: ARCH is x86_64
> > ../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
> > ../makefile.environ:54: *** FBINCDIR is undefined. Stop.
> > + sudo make -f makefile.linux install
> > ../makefile.environ:12: ARCH is x86_64
> > ../makefile.environ:27: ODBCMANAGER is unixODBC in /usr/lib/x86_64-linux-gnu
> > ../makefile.environ:54: *** FBINCDIR is undefined. Stop.
> >
>
> You need the firebird libs installed so that the odbc driver can link to
> them. This line:
> https://github.com/ribasushi/gcc_asan_internal_fail/commit/191e08bab67#diff-
> 354f30a63fb0907d4ad57269548329e3R20
>
> Let me know if you run into more difficulties
I'm sorry but I don't have Fedora system, I have only openSUSE. And there I
don't have any firebird-*devel package.
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From: "sudi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84826] ICE in extract_insn, at recog.c:2304 on arm-linux-gnueabi
Date: Thu, 29 Mar 2018 09:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84826
--- Comment #14 from sudi at gcc dot gnu.org ---
Author: sudi
Date: Thu Mar 29 09:27:53 2018
New Revision: 258949
URL: https://gcc.gnu.org/viewcvs?rev=258949&root=gcc&view=rev
Log:
[ARM][PR target/84826] Fix ICE in extract_insn, at recog.c:2304 on
arm-linux-gnueabihf
This patch backports r258777 and r258805 to gcc-7-branch
and gcc-6-branch. The same ICE occurs in both the branches with
-fstack-check. Thus the test case directive has been changed.
The discussion on the patch that went into trunk is:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01120.html
ChangeLog entries:
*** gcc/ChangeLog ***
2018-03-29 Sudakshina Das <sudi.das@arm.com>
Backport from mainline
2018-03-22 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* config/arm/arm.h (machine_function): Add static_chain_stack_bytes.
* config/arm/arm.c (arm_compute_static_chain_stack_bytes): Avoid
re-computing once computed.
(arm_expand_prologue): Compute machine->static_chain_stack_bytes.
(arm_init_machine_status): Initialize
machine->static_chain_stack_bytes.
*** gcc/testsuite/ChangeLog ***
2018-03-29 Sudakshina Das <sudi.das@arm.com>
* gcc.target/arm/pr84826.c: Change dg-option to -fstack-check.
Backport from mainline
2018-03-23 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* gcc.target/arm/pr84826.c: Add dg directive.
Backport from mainline
2018-03-22 Sudakshina Das <sudi.das@arm.com>
PR target/84826
* gcc.target/arm/pr84826.c: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/pr84826.c
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/arm/arm.c
branches/gcc-6-branch/gcc/config/arm/arm.h
branches/gcc-6-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599684-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 09:33:32 2018
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Subject: [Bug target/84762] GCC for PowerPC32 violates the SysV ABI spec for small struct returns
Date: Thu, 29 Mar 2018 09:33:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tamar.christina at arm dot com
--- Comment #4 from Alan Modra <amodra at gmail dot com> ---
Mainline regressed with svn rev 254862 (git commit e0da09896).
2017-11-17 Tamar Christina <tamar.christina@arm.com>
* expr.c (copy_blkmode_to_reg): Fix bitsize for targets
with fast unaligned access.
* doc/sourcebuild.texi (word_mode_no_slow_unalign): New.
>From gcc-bugs-return-599685-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 09:35:04 2018
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Subject: [Bug c++/85113] [7/8 Regression] ICE with __builtin_constant_p
Date: Thu, 29 Mar 2018 09:35:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-29
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, caused by r258659 on trunk and r258813 on gcc-7-branch.
>From gcc-bugs-return-599686-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 09:47:06 2018
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Subject: [Bug c++/85114] -fstack-check causes internal compiler error
Date: Thu, 29 Mar 2018 09:47:00 -0000
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--- Comment #2 from Thomas Klausner <tk at giga dot or.at> ---
Here's the requested output:
Using built-in specs.
COLLECT_GCC=/scratch/mail/thunderbird/work/.gcc/bin/g++
Target: x86_64--netbsd
Configured with: /usr/src/tools/gcc/../../external/gpl3/gcc/dist/configure
--target=x86_64--netbsd --enable-long-long --enable-threads
--with-bugurl=http://www.NetBSD.org/Misc/send-pr.html --with-pkgversion='NetBSD
nb1 20180203' --with-system-zlib --disable-libstdcxx-dual-abi
--enable-__cxa_atexit --enable-libstdcxx-time=rt --enable-libstdcxx-threads
--with-tune=nocona --with-diagnostics-color=auto-if-env
--with-mpc-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/mpc/lib/libmpc
--with-mpfr-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/mpfr/lib/libmpfr
--with-gmp-lib=/var/obj/mknative/amd64-x86_64/usr/src/external/lgpl3/gmp/lib/libgmp
--with-mpc-include=/usr/src/external/lgpl3/mpc/dist/src
--with-mpfr-include=/usr/src/external/lgpl3/mpfr/dist/src
--with-gmp-include=/usr/src/external/lgpl3/gmp/lib/libgmp/arch/x86_64
--enable-tls --disable-multilib --disable-symvers --disable-libstdcxx-pch
--disable-libstdcxx-dual-abi --build=x86_64-unknown-netbsd7.1
--host=x86_64--netbsd
--with-sysroot=/var/obj/mknative/amd64-x86_64/usr/src/destdir.amd64
Thread model: posix
gcc version 6.4.0 (nb1 20180203)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=gnu++11' '-o'
'Unified_cpp_layout_generic1.o' '-c' '-I'
'/scratch/mail/thunderbird/work/build/dist/stl_wrappers' '-I'
'/scratch/mail/thunderbird/work/build/dist/system_wrappers' '-include'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/config/gcc_hidden.h'
'-D' 'NDEBUG=1' '-D' 'TRIMMED=1' '-D' 'OS_POSIX=1' '-D' 'OS_NETBSD=1' '-D'
'OS_BSD=1' '-D' 'STATIC_EXPORTABLE_JS_API' '-D' 'MOZ_HAS_MOZGLUE' '-D'
'MOZILLA_INTERNAL_API' '-D' 'IMPL_LIBXUL' '-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic' '-I'
'/scratch/mail/thunderbird/work/build/layout/generic' '-I'
'/scratch/mail/thunderbird/work/build/ipc/ipdl/_ipdlheaders' '-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/chromium/src'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/glue' '-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/plugins/base'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/base'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/forms'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/style'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/svg'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/tables'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/xul'
'-I' '/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/base' '-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/html' '-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/xul' '-I'
'/scratch/mail/thunderbird/work/build/dist/include' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/nspr' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/nss' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/pixman-1' '-fPIC' '-D' 'PIC'
'-D' 'MOZILLA_CLIENT' '-include'
'/scratch/mail/thunderbird/work/build/mozilla-config.h' '-MD' '-MP' '-MF'
'.deps/Unified_cpp_layout_generic1.o.pp' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/nss/nss' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/libdrm' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/freetype2' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/glib/glib-2.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/glib/gio-unix-2.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/lib/glib-2.0/include' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/ffmpeg3' '-Wall'
'-Wc++11-compat' '-Wempty-body' '-Wignored-qualifiers' '-Woverloaded-virtual'
'-Wpointer-arith' '-Wsign-compare' '-Wtype-limits' '-Wwrite-strings'
'-Wno-invalid-offsetof' '-Wc++14-compat' '-Wno-error=maybe-uninitialized'
'-Wno-error=deprecated-declarations' '-Wno-error=array-bounds'
'-fno-lifetime-dse' '-O2' '-D' '_FORTIFY_SOURCE=2' '-fstack-check=specific'
'-fno-strict-aliasing' '-D' 'unix' '-fno-rtti' '-fno-exceptions'
'-fno-math-errno' '-pthread' '-pipe' '-O2' '-fomit-frame-pointer' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/cairo' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/uuid' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/libpng16' '-D' '_REENTRANT'
'-D' '_REENTRANT'
'-I'
'/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/widget/gtk/compat-gtk3'
'-I' '/scratch/mail/thunderbird/work/.buildlink/include/gtk-3.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/pango-1.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/harfbuzz' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/gdk-pixbuf-2.0' '-D'
'_REENTRANT' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/glib/gio-unix-2.0/' '-D'
'_REENTRANT' '-I' '/scratch/mail/thunderbird/work/.buildlink/include/atk-1.0'
'-I' '/scratch/mail/thunderbird/work/.buildlink/include/at-spi2-atk/2.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/at-spi-2.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/dbus-1.0' '-I'
'/scratch/mail/thunderbird/work/.buildlink/lib/dbus-1.0/include' '-I'
'/scratch/mail/thunderbird/work/.buildlink/include/gtk-3.0/unix-print' '-D'
'_REENTRANT' '-D' '_REENTRANT' '-D' '_REENTRANT' '-D' '_REENTRANT' '-pthread'
'-Wno-error=shadow' '-fstack-protector-all' '-shared-libgcc' '-mtune=nocona'
'-march=x86-64'
/usr/libexec/cc1plus -E -quiet -v -I
/scratch/mail/thunderbird/work/build/dist/stl_wrappers -I
/scratch/mail/thunderbird/work/build/dist/system_wrappers -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic -I
/scratch/mail/thunderbird/work/build/layout/generic -I
/scratch/mail/thunderbird/work/build/ipc/ipdl/_ipdlheaders -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/chromium/src -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/ipc/glue -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/plugins/base -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/base -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/forms -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/style -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/svg -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/tables -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/xul -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/base -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/html -I
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/dom/xul -I
/scratch/mail/thunderbird/work/build/dist/include -I
/scratch/mail/thunderbird/work/.buildlink/include/nspr -I
/scratch/mail/thunderbird/work/.buildlink/include/nss -I
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GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: a420194dd480da94b8c1d12081293bdf
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:101:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:
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nscoord, nscoord, nscoord, const nsStyleCoord&, nsIFrame::ComputeSizeFlags)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsFrame.cpp:5434:11:
warning: ‘result’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
nscoord result;
^~~~~~
In file included from
/scratch/mail/thunderbird/work/build/layout/generic/Unified_cpp_layout_generic1.cpp:11:0:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsBlockFrame.cpp:
In member function ‘virtual nscoord
nsBlockFrame::GetMinISize(nsRenderingContext*)’:
/scratch/mail/thunderbird/work/thunderbird-52.7.0/mozilla/layout/generic/nsBlockFrame.cpp:704:1:
internal compiler error: in refs_may_alias_p_1, at tree-ssa-alias.c:1429
nsBlockFrame::GetMinISize(nsRenderingContext *aRenderingContext)
^~~~~~~~~~~~
no stack trace because unwind library not available
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://www.NetBSD.org/support/send-pr.html> for instructions.
>From gcc-bugs-return-599687-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 10:03:00 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)
Date: Thu, 29 Mar 2018 10:03:00 -0000
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--- Comment #10 from Peter Rabbitson <ribasushi at leporine dot io> ---
On 03/29/2018 11:27 AM, marxin at gcc dot gnu.org wrote:
>
> I'm sorry but I don't have Fedora system, I have only openSUSE. And there I
> don't have any firebird-*devel package.
>
The steps are for Ubuntu but all the same. The openSUSE package seems to
be https://software.opensuse.org/package/firebird-devel , but I have
zero experience with SUSE to know whether I am looking at the right thing :/
Do you have access to vagrant/virtualbox? I might be able to put
together a vagrantfile for you that is similar to travis, yet you will
be able to run it locally...
>From gcc-bugs-return-599688-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 10:21:35 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 sanitizer/84428] =q22=dressSanitizer CHECK failed: ../../../sanitizer/asan/asan_interceptors.cc:384 "((__interception::real___cxa_throw)) != (0)" (0x0, 0x0)
Date: Thu, 29 Mar 2018 10:21:00 -0000
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--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Peter Rabbitson from comment #10)
> On 03/29/2018 11:27 AM, marxin at gcc dot gnu.org wrote:
> >
> > I'm sorry but I don't have Fedora system, I have only openSUSE. And there I
> > don't have any firebird-*devel package.
> >
>
> The steps are for Ubuntu but all the same. The openSUSE package seems to
> be https://software.opensuse.org/package/firebird-devel , but I have
> zero experience with SUSE to know whether I am looking at the right thing :/
It's some user package for version 2.5. Would it be sufficient version?
>
> Do you have access to vagrant/virtualbox? I might be able to put
> together a vagrantfile for you that is similar to travis, yet you will
> be able to run it locally...
Yes, valgrind image would be fine.
>From gcc-bugs-return-599689-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 10:29:05 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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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
--- Comment #12 from Peter Rabbitson <ribasushi at leporine dot io> ---
On 03/29/2018 12:21 PM, marxin at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
>
> --- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
> (In reply to Peter Rabbitson from comment #10)
>> On 03/29/2018 11:27 AM, marxin at gcc dot gnu.org wrote:
>>>
>>> I'm sorry but I don't have Fedora system, I have only openSUSE. And there I
>>> don't have any firebird-*devel package.
>>>
>>
>> The steps are for Ubuntu but all the same. The openSUSE package seems to
>> be https://software.opensuse.org/package/firebird-devel , but I have
>> zero experience with SUSE to know whether I am looking at the right thing :/
>
> It's some user package for version 2.5. Would it be sufficient version?
>
Yes, 2.5 is what I tested with.
>
>> Do you have access to vagrant/virtualbox? I might be able to put
>> together a vagrantfile for you that is similar to travis, yet you will
>> be able to run it locally...
>
> Yes, valgrind image would be fine.
>
I will try to prepare one some time around the weekend, unless you
manage to work it out with the package above.
>From gcc-bugs-return-599690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 10:35:04 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/84826] ICE in extract_insn, at recog.c:2304 on arm-linux-gnueabi
Date: Thu, 29 Mar 2018 10:35:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |6.4.1, 7.3.1, 8.0
Resolution|--- |FIXED
Target Milestone|--- |6.5
Known to fail|6.4.1, 7.3.1, 8.0 |
--- Comment #15 from ktkachov at gcc dot gnu.org ---
Fixed on all active branches then.
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Subject: [Bug c/85094] [8 Regression] -g with any optimization suppresses -Wduplicated-branches
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85094
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 29 10:37:58 2018
New Revision: 258950
URL: https://gcc.gnu.org/viewcvs?rev=258950&root=gcc&view=rev
Log:
PR c/85094
* fold-const.c (operand_equal_p): Handle DEBUG_BEGIN_STMT.
For STATEMENT_LIST, pass down OEP_LEXICOGRAPHIC and maybe
OEP_NO_HASH_CHECK for recursive call, to avoid exponential
checking.
* c-c++-common/Wduplicated-branches-14.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/Wduplicated-branches-14.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/85094] [8 Regression] -g with any optimization suppresses -Wduplicated-branches
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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.
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Subject: [Bug c++/85118] New: Error when using std::bind with a generic lambda - "cannot bind 'const volatile char&' to an rvalue of type 'const volatile char'"
Date: Thu, 29 Mar 2018 10:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85118
Bug ID: 85118
Summary: Error when using std::bind with a generic lambda -
"cannot bind 'const volatile char&' to an rvalue of
type 'const volatile char'"
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: officesamurai at gmail dot com
Target Milestone: ---
Created attachment 43794
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43794&action=edit
Preprocessed test code
Seemingly innocent code gives a strange error "cannot bind 'const volatile
char&' to an rvalue of type 'const volatile char'".
The code:
===
#include <functional>
template <typename T>
bool isOneOf(const T& /*t*/)
{
return false;
}
template <typename T, typename FirstType, typename... Tail>
bool isOneOf(const T& t, const FirstType& firstValue, const Tail&... tail)
{
return t == firstValue || isOneOf(t, tail...);
}
int main()
{
const auto isOneOfHelper = [](auto&&... params)
{
return isOneOf(std::forward<decltype(params)>(params)...);
};
auto isO = std::bind(isOneOfHelper, std::placeholders::_1, 'o');
isO('o');
}
===
GCC version:
===
$ g++-7.3.0 -v
Using built-in specs.
COLLECT_GCC=g++-7.3.0
COLLECT_LTO_WRAPPER=/home/brd/soft/gcc-7.3.0/libexec/gcc/x86_64-pc-linux-gnu/7.3.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/home/brd/soft/gcc-7.3.0
Thread model: posix
gcc version 7.3.0 (GCC)
===
The error:
===
$ g++-7.3.0 ~/tmp/test.cpp -std=c++14 -o test -save-temps
/home/brd/tmp/test.cpp: In instantiation of ‘main()::<lambda(auto:1&& ...)>
[with auto:1 = {char, const volatile char}]’:
/home/brd/tmp/test.cpp:17:51: required by substitution of ‘template<class ...
auto:1> main()::<lambda(auto:1&& ...)>::operator decltype (((const
main()::<lambda(auto:1&& ...)>*)((const main()::<lambda(auto:1&& ...)>*
const)0))->operator()(static_cast<auto:1&>(main::__lambda0::_FUN::<unnamed>)
...)) (*)(auto:1&& ...)() const [with auto:1 = {char, const volatile char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2428:26: required by
substitution of ‘template<class _Fn, class ... _Args> static
std::__result_of_success<decltype (declval<_Fn>()((declval<_Args>)()...)),
std::__invoke_other> std::__result_of_other_impl::_S_test(int) [with _Fn =
const volatile main()::<lambda(auto:1&& ...)>&; _Args = {char&&, const volatile
char&}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2439:55: required from
‘struct std::__result_of_impl<false, false, const volatile
main()::<lambda(auto:1&& ...)>&, char&&, const volatile char&>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2444:12: required from
‘struct std::__invoke_result<const volatile main()::<lambda(auto:1&& ...)>&,
char&&, const volatile char&>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2457:12: required from
‘class std::result_of<const volatile main()::<lambda(auto:1&& ...)>&(char&&,
const volatile char&)>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:511:72: required by
substitution of ‘template<class _Functor, class ... _Bound_args> template<class
_Fn, class _CallArgs, class ... _BArgs> using _Res_type_impl = typename
std::result_of<_Fn&(std::_Bind<_Functor(_Bound_args ...)>::_Mu_type<_BArgs,
_CallArgs>&& ...)>::type [with _Fn = std::add_cv<main()::<lambda(auto:1&& ...)>
>::type; _CallArgs = std::tuple<char>; _BArgs =
{std::add_cv<std::_Placeholder<1> >::type, std::add_cv<char>::type}; _Functor =
main()::<lambda(auto:1&& ...)>; _Bound_args = {std::_Placeholder<1>, char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:524:46: required by
substitution of ‘template<class _Functor, class ... _Bound_args> template<class
_CallArgs, template<class _CallArgs, template<class> class __cv_quals>
template<class _Functor, class ... _Bound_args> template<class> class
__cv_quals> using _Res_type_cv = std::_Bind<_Functor(_Bound_args
...)>::_Res_type_impl<typename __cv_quals<typename
std::enable_if<(bool)((std::tuple_size<_Tuple>::value + 1)),
_Functor>::type>::type, _CallArgs, typename __cv_quals<_Bound_args>::type ...>
[with _CallArgs = std::tuple<char>; __cv_quals = std::add_cv; _Functor =
main()::<lambda(auto:1&& ...)>; _Bound_args = {std::_Placeholder<1>, char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:585:9: required by
substitution of ‘template<class ... _Args, class _Result> _Result
std::_Bind<main()::<lambda(auto:1&& ...)>(std::_Placeholder<1>,
char)>::operator()<_Args ..., _Result>(_Args&& ...) const volatile [with _Args
= {char}; _Result = <missing>]’
/home/brd/tmp/test.cpp:24:12: required from here
/home/brd/tmp/test.cpp:19:23: error: no matching function for call to
‘isOneOf(char, const volatile char)’
return isOneOf(std::forward<decltype(params)>(params)...);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/brd/tmp/test.cpp:4:6: note: candidate: template<class T> bool
isOneOf(const T&)
bool isOneOf(const T& /*t*/)
^~~~~~~
/home/brd/tmp/test.cpp:4:6: note: template argument deduction/substitution
failed:
/home/brd/tmp/test.cpp:19:23: note: candidate expects 1 argument, 2 provided
return isOneOf(std::forward<decltype(params)>(params)...);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/brd/tmp/test.cpp:10:6: note: candidate: bool isOneOf(const T&, const
FirstType&, const Tail& ...) [with T = char; FirstType = volatile char; Tail =
{}] <near match>
bool isOneOf(const T& t, const FirstType& firstValue, const Tail&... tail)
^~~~~~~
/home/brd/tmp/test.cpp:10:6: note: conversion of argument 2 would be
ill-formed:
/home/brd/tmp/test.cpp:19:23: error: cannot bind non-const lvalue reference of
type ‘const volatile char&’ to an rvalue of type ‘const volatile char’
return isOneOf(std::forward<decltype(params)>(params)...);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/brd/tmp/test.cpp: In instantiation of ‘main()::<lambda(auto:1&& ...)>
[with auto:1 = {char, volatile char}]’:
/home/brd/tmp/test.cpp:17:51: required by substitution of ‘template<class ...
auto:1> main()::<lambda(auto:1&& ...)>::operator decltype (((const
main()::<lambda(auto:1&& ...)>*)((const main()::<lambda(auto:1&& ...)>*
const)0))->operator()(static_cast<auto:1&>(main::__lambda0::_FUN::<unnamed>)
...)) (*)(auto:1&& ...)() const [with auto:1 = {char, volatile char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2428:26: required by
substitution of ‘template<class _Fn, class ... _Args> static
std::__result_of_success<decltype (declval<_Fn>()((declval<_Args>)()...)),
std::__invoke_other> std::__result_of_other_impl::_S_test(int) [with _Fn =
volatile main()::<lambda(auto:1&& ...)>&; _Args = {char&&, volatile char&}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2439:55: required from
‘struct std::__result_of_impl<false, false, volatile main()::<lambda(auto:1&&
...)>&, char&&, volatile char&>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2444:12: required from
‘struct std::__invoke_result<volatile main()::<lambda(auto:1&& ...)>&, char&&,
volatile char&>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/type_traits:2457:12: required from
‘class std::result_of<volatile main()::<lambda(auto:1&& ...)>&(char&&, volatile
char&)>’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:511:72: required by
substitution of ‘template<class _Functor, class ... _Bound_args> template<class
_Fn, class _CallArgs, class ... _BArgs> using _Res_type_impl = typename
std::result_of<_Fn&(std::_Bind<_Functor(_Bound_args ...)>::_Mu_type<_BArgs,
_CallArgs>&& ...)>::type [with _Fn = std::add_volatile<main()::<lambda(auto:1&&
...)> >::type; _CallArgs = std::tuple<char>; _BArgs =
{std::add_volatile<std::_Placeholder<1> >::type,
std::add_volatile<char>::type}; _Functor = main()::<lambda(auto:1&& ...)>;
_Bound_args = {std::_Placeholder<1>, char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:524:46: required by
substitution of ‘template<class _Functor, class ... _Bound_args> template<class
_CallArgs, template<class _CallArgs, template<class> class __cv_quals>
template<class _Functor, class ... _Bound_args> template<class> class
__cv_quals> using _Res_type_cv = std::_Bind<_Functor(_Bound_args
...)>::_Res_type_impl<typename __cv_quals<typename
std::enable_if<(bool)((std::tuple_size<_Tuple>::value + 1)),
_Functor>::type>::type, _CallArgs, typename __cv_quals<_Bound_args>::type ...>
[with _CallArgs = std::tuple<char>; __cv_quals = std::add_volatile; _Functor =
main()::<lambda(auto:1&& ...)>; _Bound_args = {std::_Placeholder<1>, char}]’
/home/brd/soft/gcc-7.3.0/include/c++/7.3.0/functional:573:9: required by
substitution of ‘template<class ... _Args, class _Result> _Result
std::_Bind<main()::<lambda(auto:1&& ...)>(std::_Placeholder<1>,
char)>::operator()<_Args ..., _Result>(_Args&& ...) volatile [with _Args =
{char}; _Result = <missing>]’
/home/brd/tmp/test.cpp:24:12: required from here
/home/brd/tmp/test.cpp:19:23: error: no matching function for call to
‘isOneOf(char, volatile char)’
/home/brd/tmp/test.cpp:4:6: note: candidate: template<class T> bool
isOneOf(const T&)
bool isOneOf(const T& /*t*/)
^~~~~~~
/home/brd/tmp/test.cpp:4:6: note: template argument deduction/substitution
failed:
/home/brd/tmp/test.cpp:19:23: note: candidate expects 1 argument, 2 provided
return isOneOf(std::forward<decltype(params)>(params)...);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/brd/tmp/test.cpp:10:6: note: candidate: bool isOneOf(const T&, const
FirstType&, const Tail& ...) [with T = char; FirstType = volatile char; Tail =
{}] <near match>
bool isOneOf(const T& t, const FirstType& firstValue, const Tail&... tail)
^~~~~~~
/home/brd/tmp/test.cpp:10:6: note: conversion of argument 2 would be
ill-formed:
/home/brd/tmp/test.cpp:19:23: error: cannot bind non-const lvalue reference of
type ‘const volatile char&’ to an rvalue of type ‘volatile char’
return isOneOf(std::forward<decltype(params)>(params)...);
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
===
P.S. I also tried GCC 6.3.0 (got similar error) and 5.2.0 (no errors).
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Subject: [Bug c++/85108] [7 Regression] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
Date: Thu, 29 Mar 2018 11:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85108
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Summary|[7/8 Regression] Incorrect |[7 Regression] Incorrect
|warning for constexpr |warning for constexpr
|lambda with |lambda with
|-Wunused-but-set-variable |-Wunused-but-set-variable
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Testcase without includes:
// PR c++/85108
// { dg-do compile { target c++17 } }
// { dg-options "-Wunused-but-set-variable" }
int
main ()
{
auto constexpr add = [] (auto a, auto b) { return a + b; }; // { dg-bogus
"set but not used" }
auto test_lambda = [&] () { return add (2, 2); };
return test_lambda () - 4;
}
With -std=c++17 -Wunused-but-set-variable we don't warn about this anymore
starting with r253266.
The testcase is rejected with -std=c++14 starting with r247814 aka PR70979 fix.
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Subject: [Bug c++/85108] [7 Regression] Incorrect warning for constexpr lambda with -Wunused-but-set-variable
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 29 11:18:04 2018
New Revision: 258952
URL: https://gcc.gnu.org/viewcvs?rev=258952&root=gcc&view=rev
Log:
PR c++/85108
* g++.dg/warn/Wunused-var-31.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wunused-var-31.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: =?UTF-8?B?W0J1ZyB0YXJnZXQvODQ5MjZdIGVycm9yOiBpbmxpbmluZyBmYWlsZWQgaW4g?= =?UTF-8?B?Y2FsbCB0byBhbHdheXNfaW5saW5lIOKAmF9tbV9jcmMzMl91NjTigJk6IHRh?= =?UTF-8?B?cmdldCBzcGVjaWZpYyBvcHRpb24gbWlzbWF0Y2ggIF9tbV9jcmMzMl91NjQ=?Date: Thu, 29 Mar 2018 11:29:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
>From gcc-bugs-return-599697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 11:34:24 2018
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Subject: [Bug c++/85119] New: __builtin_expect() shadows warning
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Bug ID: 85119
Summary: __builtin_expect() shadows warning
Product: gcc
Version: 7.2.0
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Created attachment 43795
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43795&action=edit
example program to showcase the issue
The builtin_expect() prevents the compiler to emit a warning in case you
compare the this pointer with nullptr. Consider the attached code compiled with
gcc 7.2.0 and following parameter:
g++ gcc_bug.cc -Wall -Wextra -std=c++11
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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 #13 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Peter Rabbitson from comment #12)
> On 03/29/2018 12:21 PM, marxin at gcc dot gnu.org wrote:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
> >
> > --- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
> > (In reply to Peter Rabbitson from comment #10)
> >> On 03/29/2018 11:27 AM, marxin at gcc dot gnu.org wrote:
> >>>
> >>> I'm sorry but I don't have Fedora system, I have only openSUSE. And there I
> >>> don't have any firebird-*devel package.
> >>>
> >>
> >> The steps are for Ubuntu but all the same. The openSUSE package seems to
> >> be https://software.opensuse.org/package/firebird-devel , but I have
> >> zero experience with SUSE to know whether I am looking at the right thing :/
> >
> > It's some user package for version 2.5. Would it be sufficient version?
> >
>
> Yes, 2.5 is what I tested with.
Done that, but still not working :/
>
> >
> >> Do you have access to vagrant/virtualbox? I might be able to put
> >> together a vagrantfile for you that is similar to travis, yet you will
> >> be able to run it locally...
> >
> > Yes, valgrind image would be fine.
> >
>
> I will try to prepare one some time around the weekend, unless you
> manage to work it out with the package above.
Would be good.
Can you please describe what exactly do you instrument? Is it a Perl package,
or a firebird?
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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 #14 from Peter Rabbitson <ribasushi at leporine dot io> ---
On 03/29/2018 01:35 PM, marxin at gcc dot gnu.org wrote:
>
> Can you please describe what exactly do you instrument? Is it a Perl package,
> or a firebird?
The failcase I provided in my first involvement with this ticket has
*only* the following library instrumented:
https://sourceforge.net/projects/firebird/files/firebird-ODBC-driver/2.0.2-Release/OdbcFb-Source-2.0.2.153.gz/download
Everything else is there to aid reproduction steps, nothing more. You
can also see it in the stacktrace by observing which pieces have debug
info attached to them:
https://travis-ci.org/ribasushi/gcc_asan_internal_fail/builds/359301514#L1996-L2000
I will see what I can do about a vagrant box, but it might take me a while.
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
Date: Thu, 29 Mar 2018 11:58:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid,
| |ice-on-invalid-code
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Two problems here: The invalid reshape is accepted, and this
causes a subsequent ICE.
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Subject: [Bug c++/79085] [6/7 Regression] ICE with placement new to unaligned location
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--- Comment #11 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #10)
> Fixed for 8.1+ so far.
Hi Jakub,
Are you planning to do a backport?
Best regards.
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Subject: [Bug libgcc/85120] New: __get_cpuid
Date: Thu, 29 Mar 2018 12:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85120
Bug ID: 85120
Summary: __get_cpuid
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
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Target: i686
__get_cpuid performs the EFLAGS check even with -march=x86-64. I think the
instruction was introduced with the Pentium, so we can avoid the check when
compiling with -march=i586.
>From gcc-bugs-return-599703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:16:14 2018
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Subject: [Bug c++/85118] [6/7/8 Regression] Error when using std::bind with a generic lambda - "cannot bind 'const volatile char&' to an rvalue of type 'const volatile char'"
Date: Thu, 29 Mar 2018 12:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85118
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Known to work| |5.5.0
Keywords| |rejects-valid
Last reconfirmed| |2018-03-29
Ever confirmed|0 |1
Summary|Error when using std::bind |[6/7/8 Regression] Error
|with a generic lambda - |when using std::bind with a
|"cannot bind 'const |generic lambda - "cannot
|volatile char&' to an |bind 'const volatile char&'
|rvalue of type 'const |to an rvalue of type 'const
|volatile char'" |volatile char'"
Target Milestone|--- |6.5
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
clang accepts it as well.
>From gcc-bugs-return-599704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:48:06 2018
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Subject: [Bug target/85117] ARM: Wrong Warning Emits: parameter passing for argument of type 'Handle<Unknown>' changed in GCC 7.1
Date: Thu, 29 Mar 2018 12:48:00 -0000
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--- Comment #1 from linzj <manjian2006 at gmail dot com> ---
Please note that the 64 bit alignment require comes from the typedef, not the
base.
>From gcc-bugs-return-599705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:50:25 2018
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Subject: [Bug target/85121] New: Assembler messages: Error: operand out of range (264 is not between 0 and 248)
Date: Thu, 29 Mar 2018 12:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85121
Bug ID: 85121
Summary: Assembler messages: Error: operand out of range (264
is not between 0 and 248)
Product: gcc
Version: unknown
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Keywords: assemble-failure
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Target: powerpcspe-*-linux-gnu*
Created attachment 43796
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43796&action=edit
Testcase
gas 2.29.1 rejects the code generated by gcc-8.0.0-alpha20180325 snapshot
(r258846) w/ -mfloat-gprs=single -O2 -fassociative-math -fstack-protector
-ftree-loop-vectorize -fno-omit-frame-pointer -fno-signed-zeros
-fno-trapping-math --param vect-max-version-for-alignment-checks=5 for the
attached snippet compiled for a powerpcspe target:
% powerpc-e500v2-linux-gnuspe-gcc-8.0.0-alpha20180325 -mfloat-gprs=single -O2
-fassociative-math -fstack-protector -ftree-loop-vectorize
-fno-omit-frame-pointer -fno-signed-zeros -fno-trapping-math --param
vect-max-version-for-alignment-checks=5 -c xoacmrcv.c
/tmp/ccKuPpxJ.s: Assembler messages:
/tmp/ccKuPpxJ.s:370: Error: operand out of range (264 is not between 0 and 248)
>From gcc-bugs-return-599706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:54:11 2018
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Subject: [Bug tree-optimization/83126] [8 Regression] ICE in transform_to_exit_first_loop_alt, at tree-parloops.c:1713
Date: Thu, 29 Mar 2018 12:54:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Arseny Solokha <asolokha at gmx dot com> ---
I suppose it is fixed.
>From gcc-bugs-return-599707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:57:10 2018
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Subject: [Bug c++/84791] ICE with broken OpenMP reduction clause
Date: Thu, 29 Mar 2018 12:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-03-29
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43797
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43797&action=edit
gcc8-pr84791.patch
Untested fix.
>From gcc-bugs-return-599708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 12:59:05 2018
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Subject: [Bug c++/84993] Combination of fieldnames and accessor suggestions for misspelled private fields
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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>From gcc-bugs-return-599709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:03:06 2018
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Subject: [Bug lto/84995] Documentation gcc-ar and gcc-ranlib vs {libdir}/bfd-plugins
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Mar 29 13:02:23 2018
New Revision: 258953
URL: https://gcc.gnu.org/viewcvs?rev=258953&root=gcc&view=rev
Log:
Documentation tweaks.
2018-03-29 Martin Liska <mliska@suse.cz>
PR lto/84995.
* doc/invoke.texi: Document how LTO works with debug info.
Describe auto-load support of binutils. Mention 'x86-64'
as valid option value of -march option.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/invoke.texi
>From gcc-bugs-return-599711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:04:28 2018
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Subject: [Bug target/71991] Inconsistency for __attribute__ ((__always_inline__)) among LTO and non-LTO compilation
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dilyan.palauzov at aegee dot org
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
*** Bug 84926 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599710-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:04:27 2018
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Subject: =?UTF-8?B?W0J1ZyB0YXJnZXQvODQ5MjZdIGVycm9yOiBpbmxpbmluZyBmYWlsZWQgaW4g?= =?UTF-8?B?Y2FsbCB0byBhbHdheXNfaW5saW5lIOKAmF9tbV9jcmMzMl91NjTigJk6IHRh?= =?UTF-8?B?cmdldCBzcGVjaWZpYyBvcHRpb24gbWlzbWF0Y2ggIF9tbV9jcmMzMl91NjQ=?Date: Thu, 29 Mar 2018 13:04:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
I added missing option value to documentation.
Closing as dup.
*** This bug has been marked as a duplicate of bug 71991 ***
>From gcc-bugs-return-599712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:05:31 2018
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Subject: [Bug lto/84995] Documentation gcc-ar and gcc-ranlib vs {libdir}/bfd-plugins
Date: Thu, 29 Mar 2018 13:05:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed, no ambition to backport that.
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Subject: [Bug target/85117] ARM: Wrong Warning Emits: parameter passing for argument of type 'Handle<Unknown>' changed in GCC 7.1
Date: Thu, 29 Mar 2018 13:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jakub at gcc dot gnu.org
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It is not a warning, just a message, and it is completely correct, older G++
versions would pass objects with such types differently than 7.1+.
>From gcc-bugs-return-599714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:11:05 2018
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Subject: [Bug c++/85119] __builtin_expect() shadows warning
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-29
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, all releases supporting the warning are affected.
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
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--- Comment #9 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Mar 29 13:14:06 2018
New Revision: 258954
URL: https://gcc.gnu.org/viewcvs?rev=258954&root=gcc&view=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX and AVX512 features only if their states are supported by
OSXSAVE.
PR target/85100
* config/i386/cpuinfo.c (XCR_XFEATURE_ENABLED_MASK): New.
(XSTATE_FP): Likewise.
(XSTATE_SSE): Likewise.
(XSTATE_YMM): Likewise.
(XSTATE_OPMASK): Likewise.
(XSTATE_ZMM): Likewise.
(XSTATE_HI_ZMM): Likewise.
(XCR_AVX_ENABLED_MASK): Likewise.
(XCR_AVX512F_ENABLED_MASK): Likewise.
(get_available_features): Enable AVX and AVX512 features only
if their states are supported by OSXSAVE.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/config/i386/cpuinfo.c
>From gcc-bugs-return-599716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:15:52 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
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--- Comment #13 from Steven Munroe <munroesj at gcc dot gnu.org> ---
WTF which part of requirement did you not understand.
You you should implement the direct moves (to GPRs) to complete the
__builtin_fctid and __builtin_fctiw implementation.
But to just remove them is missing the point.
>From gcc-bugs-return-599717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:16:22 2018
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Subject: [Bug libgcc/60790] libatomic convenience library selects IFUNC implementation before obtaining cpu info.
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Florian Weimer <fw at gcc dot gnu.org> changed:
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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/84947] UBSAN: ipcp_bits_lattice::meet_with(generic_wide_int<fixed_wide_int_storage<192> >, generic_wide_int<fixed_wide_int_storage<192> >, unsigned int) ../../gcc/ipa-cp.c:1058
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--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
>
> Does IPA-CP in any way handle jump functions of float types?
It does not create any jump functions tracking individual bits, we
only create that part of jump functions for integral and pointer
types.
(In reply to Martin Liška from comment #5)
> I can confirm it works for me:
>
> diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
> index ee41a8d55b7..96fff686a3a 100644
> --- a/gcc/ipa-cp.c
> +++ b/gcc/ipa-cp.c
> @@ -1813,7 +1813,8 @@ propagate_bits_across_jump_function (cgraph_edge *cs,
> int idx,
>
> /* For K&R C programs, ipa_get_type() could return NULL_TREE.
> Avoid the transform for these cases. */
> - if (!parm_type)
> + if (!parm_type || !(INTEGRAL_TYPE_P (parm_type)
> + || POINTER_TYPE_P (parm_type)))
> {
> if (dump_file && (dump_flags & TDF_DETAILS))
> fprintf (dump_file, "Setting dest_lattice to bottom, because"
>
> I'm leaving that to Martin.
It seems exactly the right thing to do, let me just push that negation
into the parenthesis, bootstrap and submit to the mailing list.
Thanks.
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Subject: [Bug ipa/84947] UBSAN: ipcp_bits_lattice::meet_with(generic_wide_int<fixed_wide_int_storage<192> >, generic_wide_int<fixed_wide_int_storage<192> >, unsigned int) ../../gcc/ipa-cp.c:1058
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:51:39 2018
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Subject: [Bug target/84914] PowerPC complex multiply/divide calls the wrong function when -mabi=ieeelongdouble
Date: Thu, 29 Mar 2018 13:51:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
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--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Fixed in subversion id 258908. It will not be backported to GCC 7 since
-mabi=ieeelongdouble was not officially supported, but I will update the IBM
Advance Toolchain branch with the fix.
>From gcc-bugs-return-599721-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:52:55 2018
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
Date: Thu, 29 Mar 2018 13:52:00 -0000
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Florian Weimer <fw at gcc dot gnu.org> changed:
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--- Comment #11 from Florian Weimer <fw at gcc dot gnu.org> ---
We do have a bug here: libatomic selects CMPXCHG16B based on CPUID support. If
we want to support loads from read-only mappings, we cannot do that, and have
to use locks unconditionally (for all 128-bit atomics, to achieve
synchronization).
So we either need to fix libatomic to use locks consistently, or -mcx16 should
enable the 128 bit CAS instruction (for loads/stores/CAS).
I believe most users who use the 128-bit atomics on x86-64 will want the
lock-free instructions, and not the support for read-only mappings.
Furthermore, the read-only mapping case is most relevant to cross-process
synchronization, and a process-local lock will not achieve synchronization
there.
>From gcc-bugs-return-599722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:55:55 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 13:55:00 -0000
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--- Comment #14 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
The functions are broken, and a release is imminent. This will be revisited in
the next release, and backports considered at least for Advance Toolchain.
Time and resources are finite...
>From gcc-bugs-return-599723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 13:56:40 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 13:56:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Why aren't just C cast from float/double to int/long enough?
>From gcc-bugs-return-599724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 14:04:05 2018
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Subject: [Bug target/85117] ARM: Wrong Warning Emits: parameter passing for argument of type 'Handle<Unknown>' changed in GCC 7.1
Date: Thu, 29 Mar 2018 14:04:00 -0000
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--- Comment #3 from linzj <manjian2006 at gmail dot com> ---
(In reply to Jakub Jelinek from comment #2)
> It is not a warning, just a message, and it is completely correct, older G++
> versions would pass objects with such types differently than 7.1+.
What? Any pass-by-value parameter whose type declaration with a typedef
alignment greater than 32 will trigger this message. That is a weird message.
>From gcc-bugs-return-599725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 14:06:39 2018
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Subject: [Bug target/71991] Inconsistency for __attribute__ ((__always_inline__)) among LTO and non-LTO compilation
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Created attachment 43798
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43798&action=edit
proposed fix
this patch simply while-lists some transitions of target flags for always
inline functions. It is ugly but I can't think of anything else which would
look safe.
Martin, you mentioned there was packages broken by this. Perhaps we can try
rebuild with this patch to see if all of the real world issues are solved? If
not, i guess we will need to decide case-by-case what is safe and what not :(
>From gcc-bugs-return-599726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 14:31:18 2018
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
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--- Comment #12 from andysem at mail dot ru ---
Is read-only memory a valid use case for __atomic intrinsics anyway? These
intrinsics are primarily targeted to implement std::atomic, but does the
standard guarantee these operations (primarily, std::atomic::load()) do not
issue writes to the memory?
>From gcc-bugs-return-599727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 14:39:02 2018
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Subject: [Bug target/85117] ARM: Wrong Warning Emits: parameter passing for argument of type 'Handle<Unknown>' changed in GCC 7.1
Date: Thu, 29 Mar 2018 14:39:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If the class itself doesn't have > 32-bit alignment, yes.
It informs you that if you pass it by value, it will not be interoperable with
G++ older than 7.1.
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85110] Missing underlines for some bad arguments
Date: Thu, 29 Mar 2018 14:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85110
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Mar 29 14:43:01 2018
New Revision: 258957
URL: https://gcc.gnu.org/viewcvs?rev=258957&root=gcc&view=rev
Log:
More underlining of bad arguments (PR c++/85110)
As of r256448, the C++ frontend underlines many bad arguments in its
diagnostics; those where perform_overload_resolution returns a
non-NULL candidate, but there's a failure in convert_like_real.
However, for the case where perform_overload_resolution fails, but
there's a single non-viable candidate, the error is diagnosed by
cp_build_function_call_vec, and that currently doesn't underline
the bad argument:
$ cat test.cc
void callee (int one, const char **two, int three);
void
caller (const char *fmt)
{
callee (1, fmt, 3);
}
We emit:
$ g++ test.cc
test.cc: In function 'void caller(const char*)':
test.cc:6:20: error: cannot convert 'const char*' to 'const char**' for
argument '2' to 'void callee(int, const char**, int)'
callee (1, fmt, 3);
^
It's going through convert_for_assignment, and
implicitly using input_location.
This patch updates convert_for_assignment for this case, using
an EXPR_LOCATION if there is one, or falling back to input_location
otherwise, underlining the argument in question:
test.cc: In function 'void caller(const char*)':
test.cc:6:14: error: cannot convert 'const char*' to 'const char**' for
argument '2' to 'void callee(int, const char**, int)'
callee (1, fmt, 3);
^~~
gcc/cp/ChangeLog:
PR c++/85110
* typeck.c (convert_for_assignment): When complaining due to
conversions for an argument, attempt to use the location of the
argument.
gcc/testsuite/ChangeLog:
PR c++/85110
* g++.dg/diagnostic/param-type-mismatch-2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/diagnostic/param-type-mismatch-2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/84818] integer_onep must not be used for i18n
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01548.html
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Subject: [Bug c++/84783] Missing _mm256_permutexvar_epi64() intrinsic for AVX512VL
Date: Thu, 29 Mar 2018 14:51:00 -0000
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--- Comment #4 from speryt at gcc dot gnu.org ---
Author: speryt
Date: Thu Mar 29 14:51:03 2018
New Revision: 258958
URL: https://gcc.gnu.org/viewcvs?rev=258958&root=gcc&view=rev
Log:
2018-03-29 Sebastian Peryt <sebastian.peryt@intel.com>
gcc/ChangeLog:
PR c++/84783
* config/i386/avx512vlintrin.h (_mm256_permutexvar_epi64)
(_mm256_permutexvar_epi32, _mm256_permutex_epi64): New intrinsics.
gcc/testsuite/ChangeLog:
PR c++/84783
* gcc.target/i386/avx512vl-vpermd-1.c (_mm256_permutexvar_epi32):
Test new intrinsic.
* gcc.target/i386/avx512vl-vpermq-imm-1.c (_mm256_permutex_epi64):
Ditto.
* gcc.target/i386/avx512vl-vpermq-var-1.c (_mm256_permutexvar_epi64):
Ditto.
* gcc.target/i386/avx512f-vpermd-2.c: Do not check for AVX512F_LEN.
* gcc.target/i386/avx512f-vpermq-imm-2.c: Ditto.
* gcc.target/i386/avx512f-vpermq-var-2.c: Ditto.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/i386/avx512vlintrin.h
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512f-vpermd-2.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512f-vpermq-imm-2.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512f-vpermq-var-2.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512vl-vpermd-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512vl-vpermq-imm-1.c
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/avx512vl-vpermq-var-1.c
>From gcc-bugs-return-599731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 15:05:20 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 15:05:00 -0000
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--- Comment #16 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
These instructions use the current rounding mode, not round-to-zero.
That is, they correspond to the lrint / llrint functions, given
-fno-math-errno.
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
Date: Thu, 29 Mar 2018 15:16:00 -0000
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--- Comment #13 from toby at winterflaw dot net ---
On 29 Mar 2018, andysem at mail dot ru <gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80878
>
>--- Comment #12 from andysem at mail dot ru ---
>Is read-only memory a valid use case for __atomic intrinsics anyway?
>These
>intrinsics are primarily targeted to implement std::atomic, but does
>the
>standard guarantee these operations (primarily, std::atomic::load()) do
>not
>issue writes to the memory?
On Intel, all CAS operations always write, even if thr compare failed.
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Subject: [Bug c++/74762] [6/7/8 Regression] missing uninitialized warning (C++, parenthesized expr, TREE_NO_WARNING)
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----------------------------------------------------------------------------
CC| |stefan.hertrampf at gmx dot de
--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 85119 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 15:16:56 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 15:16:00 -0000
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--- Comment #17 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
And, when long is 64-bit, there is no corresponding standard function to
round to 32-bit integer with "invalid" raised for out-of-range results -
but there is (undocumented) __builtin_irint. So if you document
__builtin_irint, machine-specific built-in functions should only be needed
here if the functionality is desired in the presence of math-errno (cf.
the proposals to change the default there) - and even there,
machine-independent no-errno built-in functions might be better.
>From gcc-bugs-return-599732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 15:16:18 2018
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Subject: [Bug c++/85119] __builtin_expect() shadows warning
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
It's not __builtin_expect that suppresses the warning but rather the
parentheses around the expression (see below). The problem is the subject of
bug 74762.
$ cat u.C && gcc -S -Wall -Wextra u.C
struct S
{
void f ();
void g ();
};
void S::g ()
{
if (!this) f (); // -Wnonnull-compare (good)
if ((!this)) f (); // missing -Wnonnull-compare
}
u.C: In member function ‘void S::g()’:
u.C:10:3: warning: nonnull argument ‘this’ compared to NULL [-Wnonnull-compare]
if (!this) f (); // -Wnonnull-compare (good)
^~
*** This bug has been marked as a duplicate of bug 74762 ***
>From gcc-bugs-return-599736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 16:23:56 2018
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From: "munroesj at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 16:23:00 -0000
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--- Comment #18 from Steven Munroe <munroesj at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #17)
> And, when long is 64-bit, there is no corresponding standard function to
> round to 32-bit integer with "invalid" raised for out-of-range results -
> but there is (undocumented) __builtin_irint. So if you document
> __builtin_irint, machine-specific built-in functions should only be needed
> here if the functionality is desired in the presence of math-errno (cf.
> the proposals to change the default there) - and even there,
> machine-independent no-errno built-in functions might be better.
A cross platform solution is acceptable if; it is generated in-line, fully
optimized for the target, and is available soon.
Looking at glibc for powerpc there are 29 cases in current code. God knows what
boost is doing.
Need both current rounding and truncate, signed and unsigned.
>From gcc-bugs-return-599737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 16:29:06 2018
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From: "mudongliangabcd at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug demangler/85122] New: Stack Overflow(Stack Exhaustion) in demangle related functions
Date: Thu, 29 Mar 2018 16:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85122
Bug ID: 85122
Summary: Stack Overflow(Stack Exhaustion) in demangle related
functions
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: demangler
Assignee: unassigned at gcc dot gnu.org
Reporter: mudongliangabcd at gmail dot com
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Created attachment 43799
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Dockerfile for Debian Stable (Clang with AddressSanitizer)
```
wget https://ftp.gnu.org/gnu/binutils/binutils-2.29.tar.gz
tar -xvf binutils-2.29.tar.gz
cd binutils-2.29/
CFLAGS="-g -fsanitize=address" LDFLAGS="-fsanitize=address" ./configure
# You could set CC=clang or not.
make
cd binutils/
ls
./cxxfilt < ~/Downloads/poc
```
Then you will see :
```
ASAN:DEADLYSIGNAL
=================================================================
==25076==ERROR: AddressSanitizer: stack-overflow on address 0x7ffeaf715ff8 (pc
0x00000042315c bp 0x7ffeaf716890 sp 0x7ffeaf716000 T0)
#0 0x42315b in __asan::asan_malloc(unsigned long,
__sanitizer::BufferedStackTrace*)
(/home/mdl/Downloads/binutils-2.29/binutils/cxxfilt+0x42315b)
#1 0x4d23cb in malloc
(/home/mdl/Downloads/binutils-2.29/binutils/cxxfilt+0x4d23cb)
#2 0x9289c7 in xmalloc
/home/mdl/Downloads/binutils-2.29/libiberty/./xmalloc.c:147:12
#3 0x8dfe15 in string_need
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4906:21
#4 0x8de7b8 in string_append
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4961:3
#5 0x8ebd1f in demangle_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4578:7
#6 0x8ee467 in demangle_nested_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4713:12
#7 0x8ce628 in do_type
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:3719:9
#8 0x8edd4d in do_arg
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4332:8
#9 0x8eccac in demangle_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4659:9
#10 0x8ee467 in demangle_nested_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4713:12
#11 0x8ce628 in do_type
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:3719:9
#12 0x8edd4d in do_arg
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4332:8
#13 0x8eccac in demangle_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4659:9
#14 0x8ee467 in demangle_nested_args
/home/mdl/Downloads/binutils-2.29/libiberty/./cplus-dem.c:4713:12
```
Originally I reproduced this issue in Ubuntu 14.04.5 LTS. Now I test and
successfully reproduce it in Debian Testing.
The same method to reproduce it in binutils-2.30. You will get the following
error message:
```
ASAN:DEADLYSIGNAL
=================================================================
==25373==ERROR: AddressSanitizer: stack-overflow on address 0x7fff177ecff8 (pc
0x0000008dfe9b bp 0x7fff177ed3b0 sp 0x7fff177ed000 T0)
#0 0x8dfe9a in demangle_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4578:22
#1 0x8e25e7 in demangle_nested_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4713:12
#2 0x8c27a8 in do_type
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:3719:9
#3 0x8e1ecd in do_arg
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4332:8
#4 0x8e0e2c in demangle_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4659:9
#5 0x8e25e7 in demangle_nested_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4713:12
#6 0x8c27a8 in do_type
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:3719:9
#7 0x8e1ecd in do_arg
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4332:8
#8 0x8e0e2c in demangle_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4659:9
#9 0x8e25e7 in demangle_nested_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4713:12
#10 0x8c27a8 in do_type
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:3719:9
#11 0x8e1ecd in do_arg
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4332:8
#12 0x8e0e2c in demangle_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4659:9
#13 0x8e25e7 in demangle_nested_args
/home/mdl/Downloads/binutils-2.30/libiberty/./cplus-dem.c:4713:12
```
If you have any problem to reproduce this issue, please let me know.
>From gcc-bugs-return-599739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 16:30:56 2018
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Subject: [Bug demangler/85122] Stack Overflow(Stack Exhaustion) in demangle related functions
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--- Comment #2 from 慕冬亮 <mudongliangabcd at gmail dot com> ---
Created attachment 43801
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43801&action=edit
Dockerfile for Debian Stable (GCC with AddressSanitizer)
>From gcc-bugs-return-599738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 16:30:10 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug demangler/85122] Stack Overflow(Stack Exhaustion) in demangle related functions
Date: Thu, 29 Mar 2018 16:30:00 -0000
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--- Comment #1 from 慕冬亮 <mudongliangabcd at gmail dot com> ---
Created attachment 43800
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PoC to trigger stack exhaustion
>From gcc-bugs-return-599740-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 16:33:19 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug demangler/85122] Stack Overflow(Stack Exhaustion) in demangle related functions
Date: Thu, 29 Mar 2018 16:33:00 -0000
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--- Comment #3 from 慕冬亮 <mudongliangabcd at gmail dot com> ---
At first, I reported it in bugzilla of
binutils(https://sourceware.org/bugzilla/show_bug.cgi?id=23008). The developer
said it should be the issue of C++ demangle code and GCC maintains this
component. He advised me to post this bug in GCC Bugzilla.
>From gcc-bugs-return-599741-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 17:05:11 2018
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Subject: [Bug target/84914] PowerPC complex multiply/divide calls the wrong function when -mabi=ieeelongdouble
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--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> ---
Author: meissner
Date: Thu Mar 29 17:04:34 2018
New Revision: 258959
URL: https://gcc.gnu.org/viewcvs?rev=258959&root=gcc&view=rev
Log:
[gcc]
2018-03-29 Michael Meissner <meissner@linux.vnet.ibm.com>
Back port from trunk
2018-03-27 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84914
* config/rs6000/rs6000.c (create_complex_muldiv): New helper
function to create the function decl for complex long double
multiply and divide for -mabi=ieeelongdouble.
(init_float128_ieee): Call it.
[gcc/testsuite]
2018-03-29 Michael Meissner <meissner@linux.vnet.ibm.com>
Back port from trunk
2018-03-27 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/84914
* gcc.target/powerpc/mulkc-2.c: New tests to make sure complex
long double multiply/divide uses the correct function.
* gcc.target/powerpc/mulkc-3.c: Likewise.
* gcc.target/powerpc/divkc-2.c: Likewise.
* gcc.target/powerpc/divkc-3.c: Likewise.
Added:
branches/ibm/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/divkc3-2.c
branches/ibm/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/divkc3-3.c
branches/ibm/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/mulkc3-2.c
branches/ibm/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/mulkc3-3.c
Modified:
branches/ibm/gcc-7-branch/gcc/ChangeLog.ibm
branches/ibm/gcc-7-branch/gcc/config/rs6000/rs6000.c
branches/ibm/gcc-7-branch/gcc/testsuite/ChangeLog.ibm
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Subject: [Bug target/83707] g++.dg/eh/simd-3.C fails on power7 -m32
Date: Thu, 29 Mar 2018 18:05:00 -0000
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--- Comment #5 from acsawdey at gcc dot gnu.org ---
I can also confirm with trunk 258957 I do not see this fail with -m32
-mcpu=power7.
>From gcc-bugs-return-599743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:08:26 2018
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From: "acsawdey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83707] g++.dg/eh/simd-3.C fails on power7 -m32
Date: Thu, 29 Mar 2018 18:08:00 -0000
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acsawdey at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from acsawdey at gcc dot gnu.org ---
Apparently fixed so closing.
>From gcc-bugs-return-599744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:17:31 2018
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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/85102] ICE in gfc_conv_intrinsic_dot_product, at fortran/trans-intrinsic.c:4464
Date: Thu, 29 Mar 2018 18:17:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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CC| |tkoenig at gcc dot gnu.org
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Interesting.... -fdump-fortran-origial shows
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = p
symtree: 'a' || symbol: 'a'
type spec : (INTEGER 4)
attributes: (PARAMETER IMPLICIT-SAVE DIMENSION)
value: 1
Array spec:(1 [0] AS_EXPLICIT 1 2 )
symtree: 'b' || symbol: 'b'
type spec : (INTEGER 4)
attributes: (PARAMETER IMPLICIT-SAVE)
value: _gfortran_dot_product_i4[[((1) (1))]]
symtree: 'dot_product' || symbol: 'dot_product'
type spec : (REAL 4)
attributes: (PROCEDURE FUNCTION IMPLICIT-TYPE)
result: dot_product
symtree: 'p' || symbol: 'p'
type spec : (UNKNOWN 0)
attributes: (PROGRAM PUBLIC SUBROUTINE)
code:
WRITE UNIT=6 FMT=-1
TRANSFER _gfortran_dot_product_i4[[((1) (1))]]
DT_END
so simplification isn't being run.
The shape is not set when arriving in dot_product:
Breakpoint 1, gfc_simplify_dot_product (vector_a=0x2581410, vector_b=0x2513e80)
at ../../trunk/gcc/fortran/simplify.c:2301
2301 if (vector_a->shape && mpz_get_si (vector_a->shape[0]) == 0)
(gdb) p vector_a->shape
$3 = (mpz_t *) 0x0
which is probably the source of the error.
>From gcc-bugs-return-599745-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:23:44 2018
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
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--- Comment #14 from andysem at mail dot ru ---
> On Intel, all CAS operations always write, even if thr compare failed.
I understand that. The question is whether this is allowed behavior for
atd::atomic::load() operation according to the C++ standard.
>From gcc-bugs-return-599746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:24:42 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 18:24:00 -0000
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--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The main issue of the builtins that have been reverted was that it was too tied
to a particular HW instruction, if the hw instruction doesn't exist, don't
support it (and this wasn't working properly, it was supported in some cases
where it just ICEd). Better is to come up with a generic builtin that does
something, and then targets can optimize if they can and there is some fallback
that can handle it when there is nothing better available.
>From gcc-bugs-return-599747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:28:33 2018
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
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--- Comment #15 from crc at winterflaw dot net ---
On 29/03/18 19:23, andysem at mail dot ru wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80878
>
> --- Comment #14 from andysem at mail dot ru ---
>> On Intel, all CAS operations always write, even if thr compare failed.
>
> I understand that. The question is whether this is allowed behavior for
> atd::atomic::load() operation according to the C++ standard.
Apologies. I replied off the cuff from my phone; I realised afterwards.
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Subject: [Bug inline-asm/84985] [6/7/8 Regression] ICE in match_reload, at lra-constraints.c:1068
Date: Thu, 29 Mar 2018 18:29:00 -0000
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--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Thu Mar 29 18:29:12 2018
New Revision: 258961
URL: https://gcc.gnu.org/viewcvs?rev=258961&root=gcc&view=rev
Log:
2018-03-29 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/84985
* lra-constraints.c (process_alt_operands): Move setting
this_alternative_matches below.
2018-03-29 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/84985
* gcc.target/i386/pr84985.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr84985.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:36:13 2018
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Subject: [Bug target/80878] -mcx16 (enable 128 bit CAS) on x86_64 seems not to work on 7.1.0
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--- Comment #16 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to andysem from comment #12)
> Is read-only memory a valid use case for __atomic intrinsics anyway? These
> intrinsics are primarily targeted to implement std::atomic,
I strongly disagree about that. These intrinsics are used in many other
contexts.
> but does the
> standard guarantee these operations (primarily, std::atomic::load()) do not
> issue writes to the memory?
std::atomic objects need to be placed in memory which allows CAS to work (or
whatever is used for the loads). On some architectures, there are more
constraints than just read-only vs writable. I don't know if libstdc++ ensures
that in some way; due the constexpr constructor, this could be tricky.
>From gcc-bugs-return-599750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 18:40:38 2018
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--- Comment #17 from andysem at mail dot ru ---
I'll clarify why I think load() should be allowed to issue writes on the
memory. According to [atomics.types.operations]/18 in N4713,
compare_exchange_*() is a load operation if the comparison fails, yet we know
cmpxchg (even the ones more narrow than cmpxchg16b) always writes, so we must
assume a load operation may write. I do not find a definition of a "load
operation" in the standard and [atomics.types.operations]/12 and 13 avoid this
term, saying that load() "Atomically returns the value pointed to by this."
Again, it doesn't say anything about writes to the memory.
So, if compare_exchange_*() is allowed to write on failure, why load()
shouldn't be? Either compare_exchange_*() issuing writes is a bug (in which
case a lock-free CAS can't be implemented on x86 at all) or writes in load()
should be allowed and the change wrt. cmpxchg16b should be reverted.
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Subject: [Bug libgcc/60790] libatomic convenience library selects IFUNC implementation before obtaining cpu info.
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--- Comment #10 from Florian Weimer <fw at gcc dot gnu.org> ---
Patch posted:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01546.html
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
Date: Thu, 29 Mar 2018 19:07:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|accepts-invalid |patch
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Actually, having more elements in RESHAPE is OK.
Patch at https://gcc.gnu.org/ml/fortran/2018-03/msg00205.html .
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43802
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43802&action=edit
gcc8-pr85090-wip.patch
Untested WIP; some more work is needed to get rid of the useless vextracti32x4
$0, ... insns, similarly e.g. how vec_extract_lo_v32hi deals with it. Dunno if
we want in some way suggest to RA that it is less costly to use a dup operand
in that case.
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Subject: [Bug c++/85093] [7/8 Regression] wrong number of template arguments does not trigger error when one argument is variadic
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Mar 29 19:38:41 2018
New Revision: 258964
URL: https://gcc.gnu.org/viewcvs?rev=258964&root=gcc&view=rev
Log:
PR c++/85093 - too many template args with pack expansion.
* pt.c (coerce_template_parms): Keep pack expansion args that will
need to be empty.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/variadic-empty1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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Subject: [Bug c++/85060] [7/8 Regression] Object cannot call its inherited member function "without object"
Date: Thu, 29 Mar 2018 19:39:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Mar 29 19:38:29 2018
New Revision: 258962
URL: https://gcc.gnu.org/viewcvs?rev=258962&root=gcc&view=rev
Log:
PR c++/85060 - wrong-code with call to base member in template.
* search.c (any_dependent_bases_p): Check uses_template_parms
rather than processing_template_decl.
Added:
trunk/gcc/testsuite/g++.dg/template/dependent-base3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/search.c
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Subject: [Bug target/71991] Inconsistency for __attribute__ ((__always_inline__)) among LTO and non-LTO compilation
Date: Thu, 29 Mar 2018 19:54:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #5)
> Created attachment 43798 [details]
> proposed fix
>
>
> this patch simply while-lists some transitions of target flags for always
> inline functions. It is ugly but I can't think of anything else which would
> look safe.
> Martin, you mentioned there was packages broken by this. Perhaps we can try
> rebuild with this patch to see if all of the real world issues are solved?
> If not, i guess we will need to decide case-by-case what is safe and what
> not :(
Thanks Honza for the patch. I see 2 failing packages:
1) xf86-video, it uses https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71991#c0
Thus it will be fixed.
2) xen
It contains:
cat fuzz-emul.i
__attribute__((__always_inline__)) a() {}
#pragma GCC target "no-sse"
b() { a(); }
Where 'a' is 'memcpy' and 'b' is a function in xen.
Can you Honza also take a look r251333 where we started to reject such code?
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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/85075] powerpc: ICE in iszero testcase
Date: Thu, 29 Mar 2018 20:18:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |uweigand at gcc dot gnu.org
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
I'm adding Ulrich Weigand to the CC list.
The bug is due to the fact that when we use -mabi=ieeelongdouble, long double
and __float128 both get the same mangled name (U10__float128), but they are
different types.
I don't know enough about C++ and types, whether we should use the standard
("e") for float128 types that are IEEE 128 (and keep U10__float128 for the
explicit __float128 type).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/85123] New: [8 regression] test case gcc.dg/pr63594-2.c begins failing with r254862
Date: Thu, 29 Mar 2018 20:19:00 -0000
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Bug ID: 85123
Summary: [8 regression] test case gcc.dg/pr63594-2.c begins
failing with r254862
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
Created attachment 43803
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43803&action=edit
preprocessed test case that shows problem
This is failing on powerpc64 BE but works on powerpc64 LE.
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/
/home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/pr63594-2.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -Wno-psabi -lm -o
./pr63594-2.exe
PASS: gcc.dg/pr63594-2.c (test for excess errors)
FAIL: gcc.dg/pr63594-2.c execution test
testcase /home/seurer/gcc/gcc-test2/gcc/testsuite/gcc.dg/dg.exp completed in 1
seconds
=== gcc Summary ===
# of expected passes 1
# of unexpected failures 1
Ugh, OK, this test case is mostly #defines. The failure is in test3float1 on
line 1007 of the preprocessed and prettied source attacked.
Program received signal SIGABRT, Aborted.
0x00003fffb7cd129c in .raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
glibc-2.17-196.el7_4.2.ppc64
(gdb) where
#0 0x00003fffb7cd129c in .raise () from /lib64/libc.so.6
#1 0x00003fffb7cd34a8 in .abort () from /lib64/libc.so.6
#2 0x000000001000221c in test3float1 () at ./pr63594-2.c:1007
#3 0x00000000100004f8 in main () at ./pr63594-2.c:1274
>From gcc-bugs-return-599759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 20:44:31 2018
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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++/84269] More suggestions for missing #include
Date: Thu, 29 Mar 2018 20:44:00 -0000
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--- Comment #12 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Mar 29 20:43:48 2018
New Revision: 258966
URL: https://gcc.gnu.org/viewcvs?rev=258966&root=gcc&view=rev
Log:
More #include suggestions (PR c++/84269)
PR c++/84269 reports a number of names in the C and C++ standard
libraries for which we don't yet offer #include fix-it hints.
This patch adds them (up to comment #9).
gcc/c-family/ChangeLog:
PR c++/84269
* known-headers.cc (get_stdlib_header_for_name): Add various names
from <assert.h>, <string.h>, and <memory.h>; add more names from
<stdio.h>.
gcc/cp/ChangeLog:
PR c++/84269
* name-lookup.c (get_std_name_hint): Add names from <memory>,
<tuple>, and <utility>.
gcc/testsuite/ChangeLog:
PR c++/84269
* g++.dg/lookup/missing-std-include-6.C: New test.
* g++.dg/lookup/missing-std-include.C: Add std::pair and
std::tuple tests.
* g++.dg/spellcheck-reswords.C: Expect a hint about <cstring>.
* g++.dg/spellcheck-stdlib.C: Add tests for names in <cstdio>,
<cstring>, <cassert>, and <cstdlib>.
Added:
trunk/gcc/testsuite/g++.dg/lookup/missing-std-include-6.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/known-headers.cc
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/name-lookup.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/lookup/missing-std-include.C
trunk/gcc/testsuite/g++.dg/spellcheck-reswords.C
trunk/gcc/testsuite/g++.dg/spellcheck-stdlib.C
>From gcc-bugs-return-599760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 20:53:07 2018
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Subject: [Bug target/83964] [8 Regression] ICE in extract_insn, at recog.c:2304
Date: Thu, 29 Mar 2018 20:53:00 -0000
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--- Comment #20 from Segher Boessenkool <segher at gcc dot gnu.org> ---
There were various issues with the builtins. We could have made them work
for just (say) power8 and up, in time for GCC 8, but then for a long time no
one would be able to use __builtin_fcti[wd] on other configs without first
doing some configure check for it. While the instructions exist on *any*
PowerPC (with hard float) (and fctid is illegal in ISA 1.xx on 32-bit
implementations).
Since nothing uses the builtins yet, we are dropping them for GCC 8. They
will be added back in GCC 9, or a generic implementation sounds even better,
indeed :-)
>From gcc-bugs-return-599761-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 20:56:49 2018
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Subject: [Bug c++/85124] New: template template parameter is printed incorrectly in the error message
Date: Thu, 29 Mar 2018 20:56:00 -0000
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Bug ID: 85124
Summary: template template parameter is printed incorrectly in
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https://wandbox.org/permlink/0ir0hnoy5jeX9KLT
----
template<class T> using ref = T&;
template<class A>
struct X {
template<template<class> class F>
using apply = F<void>;
};
X<int>::apply<ref> a;
----
prog.cc: In substitution of 'template<class T> using ref = T& [with T = void]':
prog.cc:6:26: required by substitution of 'template<class A>
template<template<template<class> class F> template<class A> template<class>
class F> using apply = F<void> [with F = ref; A = int]'
prog.cc:9:18: required from here
prog.cc:1:33: error: forming reference to void
template<class T> using ref = T&;
^
----
In the second line of the error message ("required by substitution of ..."), it
should be just `template<class> class F`, not `template<template<class> class
F> template<class A> template<class> class F` (i.e. there should be only one
template-head for the template template parameter, not three).
Just to clarify, it's irrelevant what the actual error is.
>From gcc-bugs-return-599762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 21:28:12 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/52789] gfortran sets -Wunused-parameter in the C sense as well as the Fortran sense
Date: Thu, 29 Mar 2018 21:28:00 -0000
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With r258935 I get
% gfc pr52789.f90 -Wunused-parameter
pr52789.f90:2:23:
integer, parameter :: i = 0
1
Warning: Unused parameter 'i' declared at (1) [-Wunused-parameter]
% gfc pr52789.f90 -Wunused-parameter -Wunused-dummy-argument
pr52789.f90:2:23:
integer, parameter :: i = 0
1
Warning: Unused parameter 'i' declared at (1) [-Wunused-parameter]
pr52789.f90:1:14:
subroutine s(x)
1
Warning: Unused dummy argument 'x' at (1) [-Wunused-dummy-argument]
i.e. no "unused.f90:1:0: warning: unused parameter ‘x’ [-Wunused-parameter]",
gone with 6.4.0 and above.
>From gcc-bugs-return-599763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 21:29:20 2018
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From: "john at mcfarlane dot name" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85125] New: constant expression with const_cast UB does not emit error
Date: Thu, 29 Mar 2018 21:29:00 -0000
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Bug ID: 85125
Summary: constant expression with const_cast UB does not emit
error
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
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Tested in godbolt.org ([example](https://godbolt.org/g/dhtXmH)) with x86-64
versions from 5.1 to 7.3 and trunk. Options are `-Wall -Wextra` but can be
reproduced without.
The following code compiles:
constexpr int f() {
int const i = 77;
const_cast<int&>(i) = 88;
return i;
}
static_assert(f()==77, "");
>From reading of http://eel.is/c++draft/dcl.type.cv#4 the `const_cast` line
above results in UB and from http://eel.is/c++draft/expr.const#2.6 an
expression causing UB cannot be a constant expression.
Expected: an error is emitted on the `const_cast` line explaining that a
constant value is being written to.
Actual: code compiles without warnings or errors and the `const_cast` line
appears to be ignored. (When `constexpr` is removed, produces code for a
function that returns 77.)
>From gcc-bugs-return-599764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 21:35:40 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 target/85126] New: [8 regression] gcc.target/powerpc/pr69946.c fails on powerpc64 BE starting with r254213
Date: Thu, 29 Mar 2018 21:35:00 -0000
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Bug ID: 85126
Summary: [8 regression] gcc.target/powerpc/pr69946.c fails on
powerpc64 BE starting with r254213
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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The rlwinm the test case is expecting is no longer generated.
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/pr69946.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -ffat-lto-objects -S
-o pr69946.s
PASS: gcc.target/powerpc/pr69946.c (test for excess errors)
PASS: gcc.target/powerpc/pr69946.c scan-assembler-not (?n)rlwinm.*,44,20,23
FAIL: gcc.target/powerpc/pr69946.c scan-assembler-times (?n)rlwinm.*,12,20,23 1
(found 0 times)
=== gcc Summary ===
# of expected passes 2
# of unexpected failures 1
< .ident "GCC: (GNU) 8.0.0 20171030 (experimental) [trunk revision
254212]"
---
> .ident "GCC: (GNU) 8.0.0 20171030 (experimental) [trunk revision 254213]"
18,19c18,20
< addis 9,2,.LC0@toc@ha # gpr load fusion, type long
< ld 9,.LC0@toc@l(9)
---
> addis 10,2,.LC0@toc@ha # gpr load fusion, type long
> ld 10,.LC0@toc@l(10)
> li 9,-1
22,26c23,28
< ld 9,0(9)
< lwz 3,0(9)
< rlwinm 3,3,12,20,23
< ori 3,3,0x11
< rotldi 3,3,52
---
> ld 10,0(10)
> lwz 3,0(10)
> rldicr 3,3,32,3
> rldicl 3,3,1,2
> rldicr 3,3,63,3
> rldimi 3,9,52,11
>From gcc-bugs-return-599765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 22:02:17 2018
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From: "quentin@huot-marchand.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85127] New: Members implementation outside class doesn't compile if class name is an alias from a using
Date: Thu, 29 Mar 2018 22:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85127
Bug ID: 85127
Summary: Members implementation outside class doesn't compile
if class name is an alias from a using
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
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Hello,
As I am coding with a coding style with a margin of 80 characters, I try to
minimize my length as much as possible with the use of "using".
The problem is well described here : https://godbolt.org/g/C2qQgL
As you can see it compile on clang and msvc
Apparently you can't do :
template <class T>
class Base {
public:
void foo();
};
template <class T>
using B = Base<T>;
template <class T>
void B<T>::foo() {
}
But the standard seems to authorize it.
>From gcc-bugs-return-599766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 29 22:42:34 2018
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From: "steffen at sdaoden dot eu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85128] New: Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Thu, 29 Mar 2018 22:42:00 -0000
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Bug ID: 85128
Summary: Local scope type(def) falsely assumed to change
meaning of outer scope type(def)
Product: gcc
Version: 6.4.0
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Hi, my first post here.
So i have no idea, all i can say is what the subject says, that clang gets it
right, and here is the error message:
g++ -DNDEBUG -DOPTIMIZE -Wall -W -Wno-long-long -pedantic -fno-exceptions
-fno-rtti -DPIC -fpic -I./ -fomit-frame-pointer -O2 -c -o .obj/d2.o
src/smp/x_signal.cc
In file included from ./sf/sys/cp.h:30:0,
from ./src/x_posix.h:133,
from src/smp/x_signal.cc:46:
./sf/sys/coll/teacher.h:146:32: error: declaration of 'typedef class
SF::Sys::Coll::AutoToolbox<T> SF::Sys::Coll::TypeTraits<T>::AutoToolbox'
[-fpermissive]
pub typedef AutoToolbox<Type> AutoToolbox;
^~~~~~~~~~~
In file included from ./sf/sys/coll/teacher.h:29:0,
from ./sf/sys/cp.h:30,
from ./src/x_posix.h:133,
from src/smp/x_signal.cc:46:
./sf/sys/coll/forwards.h:61:25: error: changes meaning of 'AutoToolbox' from
'class SF::Sys::Coll::AutoToolbox<T>' [-fpermissive]
template<class T> class AutoToolbox;
^~~~~~~~~~~
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Subject: [Bug c++/85027] [6/7/8 Regression] ICE on invalid C++ code: in instantiate_type, at cp/class.c:8062
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----------------------------------------------------------------------------
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--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 43804
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43804&action=edit
candidate patch
Here's the patch I'm testing
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Subject: [Bug c++/85039] [6/7/8 Regression] internal compiler error: in nested_anon_class_index, at cp/mangle.c:1626
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--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 43805
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43805&action=edit
candidate patch
Here's the patch I'm testing
>From gcc-bugs-return-599769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 06:06:33 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC is correct here. The C++ standard says there is no need for a diagnostic
even if the code is invalid C++.
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Subject: [Bug target/84413] -mtune=skylake-avx512,cannonlake,icelake disable many optimizations
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--- Comment #2 from Julia Koval <jkoval at gcc dot gnu.org> ---
Author: jkoval
Date: Fri Mar 30 07:04:55 2018
New Revision: 258972
URL: https://gcc.gnu.org/viewcvs?rev=258972&root=gcc&view=rev
Log:
Enable tuning options for skylake-avx512.
gcc/
PR target/84413
* x86-tune.def (movx, partial_reg_dependency): Enable for
m_SKYLAKE_AVX512.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/x86-tune.def
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Subject: [Bug c++/85027] [6/7/8 Regression] ICE on invalid C++ code: in instantiate_type, at cp/class.c:8062
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--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01572.html posted. It differs
from the attachment in that it fixes the regression of the candidate patch in
g++.dg/overload/template1.C.
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Subject: [Bug c++/85039] [6/7/8 Regression] internal compiler error: in nested_anon_class_index, at cp/mangle.c:1626
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--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Posted at https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01573.html
It regresses g++.dg/parse/semicolon3.C, that tests for a struct definition in a
builtin_offsetof argument. Uh oh.
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Subject: [Bug c++/85101] C++17 ICE in build_over_call, at cp/call.c:8149
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--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
bisect took me to revision 258755
that was the patch for bug 81311
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Subject: [Bug c++/81311] [7 Regression] An std::ref argument calls copy constructor instead of template constructor in C++17 mode
Date: Fri, 30 Mar 2018 08:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81311
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
bug 85101 and bug 85092 started with the patch in comment 2
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/85129] New: [openacc] Document GOMP_OPENACC_DIM
Date: Fri, 30 Mar 2018 09:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85129
Bug ID: 85129
Summary: [openacc] Document GOMP_OPENACC_DIM
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
I. trunk
The GOMP_OPENACC_DIM environment variable is not documented (it should have an
entry in libgomp.texi at 'OpenACC Environment Variables').
The plugin-nvptx.c source code shows:
...
/* ... . The syntax is the same as for the -fopenacc-dim compilation
option. */
...
The documentation of fopenacc-dim is:
...
@item -fopenacc-dim=@var{geom}
@opindex fopenacc-dim
@cindex OpenACC accelerator programming
Specify default compute dimensions for parallel offload regions that do
not explicitly specify. The @var{geom} value is a triple of
':'-separated sizes, in order 'gang', 'worker' and, 'vector'. A size
can be omitted, to use a target-specific default value.
...
The documentation of fopenacc-dim shows no examples.
If we grep through the testsuite, we find a couple of examples of fopenacc-dim
usage:
...
libgomp.oacc-c-c++-common/loop-dim-default.c:
/* { dg-additional-options "-fopenacc-dim=16:16" } */
libgomp.oacc-c-c++-common/tile-1.c:
/* { dg-additional-options "-fopenacc-dim=32" } */
libgomp.oacc-c-c++-common/loop-auto-1.c:
/* { dg-additional-options "-fopenacc-dim=32" } */
...
There is no test-case exercising omission at the start, f.i. ":16:" to use a
target-specific number of gangs, 16 workers, and a target-specific vector
length.
There are no testcases exercising GOMP_OPENACC_DIM.
II. og7
If we move over to branch og7, we find a different syntax for -fopenacc-dim,
allowing a '-' to force the corresponding dimension to be chosen at runtime:
...
@item -fopenacc-dim=@var{geom}
@opindex fopenacc-dim
@cindex OpenACC accelerator programming
Specify default compute dimensions for parallel offload regions that do
not explicitly specify. The @var{geom} value is a triple of
':'-separated sizes, in order 'gang', 'worker' and, 'vector'. If a size
is to be deferred until execution '-' can be used, alternatively a size
can be omitted to use a target-specific default value. When deferring
to runtime, the environment variable @var{GOMP_OPENACC_DIM} can be set.
It has the same format as the option value, except that '-' is not
permitted.
...
The last line excludes the usage of '-' in GOMP_OPENACC_DIM, but the comment in
plugin-nvptx still claims that syntax for GOMP_OPENACC_DIM and -fopenacc-dim is
the same.
The examples of '-' fopenacc-dim usage in og7:
...
libgomp.oacc-c-c++-common/loop-default-runtime.c:
/* { dg-additional-options "-fopenacc-dim=-:-" } */
libgomp.oacc-fortran/gemm.f90:
! { dg-additional-options "-fopenacc-dim=-:-:128" }
...
There are two test-cases excercising GOMP_OPENACC_DIM (using setenv rather than
dg-set-target-env-var, to allow remote testing setups to work where
dg-set-target-env-var is broken):
...
libgomp.oacc-c-c++-common/loop-default-compile.c:
setenv ("GOMP_OPENACC_DIM", "8:8", 1);
libgomp.oacc-c-c++-common/loop-default-runtime.c:
setenv ("GOMP_OPENACC_DIM", "8:16", 1);
...
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Subject: [Bug c++/85052] Implement support for clang's __builtin_convertvector
Date: Fri, 30 Mar 2018 09:36:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
Dup of PR61731.
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Subject: [Bug target/85048] [missed optimization] vector conversions
Date: Fri, 30 Mar 2018 09:37:00 -0000
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
See PR77399.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/85129] [openacc] Document GOMP_OPENACC_DIM
Date: Fri, 30 Mar 2018 09:48:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |documentation
CC| |tschwinge at gcc dot gnu.org
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
> When deferring
> to runtime, the environment variable @var{GOMP_OPENACC_DIM} can be set.
> It has the same format as the option value, except that '-' is not
> permitted.
Thinking about it some more, this doesn't make sense to me.
If we don't specify GOMP_OPENACC_DIM, then libgomp decides on the dimensions
that haven't been decided on yet.
So if '-' means: let libgomp decide, than surely not specifying
GOMP_OPENACC_DIM is the same as specifying GOMP_OPENACC_DIM="-:-:-"
I think it's better to keep the syntax equal between fopenacc-dim and
GOMP_OPENACC_DIM.
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Fri Mar 30 09:56:46 2018
New Revision: 258973
URL: https://gcc.gnu.org/viewcvs?rev=258973&root=gcc&view=rev
Log:
2017-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85111
* array.c (gfc_resolve_character_array_constructor): Early
exit for zero-size arrays.
* simplify.c (simplify_transformation_to_array): Exit early
if the result size is zero.
(simplify_minmaxloc_to_array): Likewise.
2017-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85111
* gfortran.dg/zero_sized_10.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/zero_sized_10.f90
Modified:
trunk/gcc/fortran/array.c
trunk/gcc/fortran/simplify.c
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Fri Mar 30 09:58:35 2018
New Revision: 258974
URL: https://gcc.gnu.org/viewcvs?rev=258974&root=gcc&view=rev
Log:
2017-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85111
* array.c (gfc_resolve_character_array_constructor): Early
exit for zero-size arrays.
* simplify.c (simplify_transformation_to_array): Exit early
if the result size is zero.
(simplify_minmaxloc_to_array): Likewise.
2017-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85111
* gfortran.dg/zero_sized_10.f90: New test.
Add ChangeLog entries for r258973.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/85111] [8 Regression] ICE in min_max_choose, at fortran/simplify.c:4884 (and others)
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed, closing. Thanks for the bug report!
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/85129] [openacc] Document GOMP_OPENACC_DIM
Date: Fri, 30 Mar 2018 10:16:00 -0000
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--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
> There are two test-cases excercising GOMP_OPENACC_DIM (using setenv rather
> than dg-set-target-env-var, to allow remote testing setups to work where
> dg-set-target-env-var is broken)
Actually, using setenv as first stmt in main works for GOMP_OPENACC_DIM,
because the value is read for the first time after that, in nvptx_exec.
But f.i. GOMP_DEBUG is read in initialize_env, which has the constructor
attribute, which "causes the function to be called automatically before
execution enters main ()". So there, using setenv doesn't work. Same goes for
ACC_DEVICE_TYPE and ACC_DEVICE_NUM, which are also set in initialize_env.
So, GOMP_OPENACC_DIM seems to be the odd one here, and we should document the
non-standard behaviour that it supports being set in main using setenv.
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Subject: [Bug fortran/85130] New: Substrings out of range are not rejected
Date: Fri, 30 Mar 2018 11:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85130
Bug ID: 85130
Summary: Substrings out of range are not rejected
Product: gcc
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F2003, 6.1.1:
Let the characters in the parent string be numbered 1, 2, 3, ..., n, where n is
the length of the parent
string. Then the characters in the substring are those from the parent string
from the starting point and
proceeding in sequence up to and including the ending point. Both the starting
point and the ending
point shall be within the range 1, 2, ..., n unless the starting point exceeds
the ending point, in which
case the substring has length zero. If the starting point is not specified, the
default value is 1. If the
ending point is not specified, the default value is n.
We correctly reject this for simple cases, but not for all. For example,
substr_6.f90 has
! { dg-do run }
! { dg-options "-std=legacy" }
!
! Check that NULs don't mess up constant substring simplification
CHARACTER(5), parameter :: c0(1) = (/ "123" // ACHAR(0) // "5" /)
CHARACTER*5 c(1)
CHARACTER(1), parameter :: c1(5) = (/ "1", "2", "3", ACHAR(0), "5" /)
c = c0(1)(-5:-8)
if (c(1) /= " ") STOP 1
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Subject: [Bug target/83822] trunk/gcc/config/rs6000/rs6000-string.c:970]: (style) Redundant condition
Date: Fri, 30 Mar 2018 12:18:00 -0000
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--- Comment #4 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Fri Mar 30 12:17:31 2018
New Revision: 258975
URL: https://gcc.gnu.org/viewcvs?rev=258975&root=gcc&view=rev
Log:
2018-03-30 Aaron Sawdey <acsawdey@linux.vnet.ibm.com>
PR target/83822
* config/rs6000/rs6000-string.c (expand_compare_loop): Fix redundant
condition.
* config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Fix redundant
condition.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000-c.c
trunk/gcc/config/rs6000/rs6000-string.c
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Subject: [Bug fortran/85130] Substrings out of range are not rejected
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--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Fri Mar 30 12:18:30 2018
New Revision: 258976
URL: https://gcc.gnu.org/viewcvs?rev=258976&root=gcc&view=rev
Log:
2018-03-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/85130
* gfortran.dg/substr_6.f90: Remove illegal test for
out-of-bounds substring.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/substr_6.f90
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Subject: [Bug fortran/85130] Substrings out of range are not rejected
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks|84094 |
Severity|normal |enhancement
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Test suite bug is corrected, the underlying accepts-invalid
is still there.
This is not a constraint, so marking as enhancement.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84094
[Bug 84094] several correctness issues in gfortran.dg
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Subject: [Bug fortran/84931] Expansion of array constructor with constant implied-do-object goes sideways
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Fri Mar 30 12:33:49 2018
New Revision: 258977
URL: https://gcc.gnu.org/viewcvs?rev=258977&root=gcc&view=rev
Log:
2018-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/84931
* simplify.c (gfc_convert_constant): Handle case of array
constructors within an array that has no iterator and improve
the conciseness of this section of code.
2018-03-30 Paul Thomas <pault@gcc.gnu.org>
PR fortran/84931
* gfortran.dg/array_constructor_53.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/array_constructor_53.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/simplify.c
trunk/gcc/testsuite/ChangeLog
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From: "steffen at sdaoden dot eu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Fri, 30 Mar 2018 12:57:00 -0000
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--- Comment #2 from Steffen Nurpmeso <steffen at sdaoden dot eu> ---
Excuse me please, but in how far is
namespace X{
class A;
class B;
}
class X::A{..};
class X::B { typedef X::A A; }
invalid C++? Which standard added that??
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Subject: [Bug fortran/52789] gfortran sets -Wunused-parameter in the C sense as well as the Fortran sense
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
So, seems fixed.
Commit a test case and close?
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Subject: [Bug other/85123] [8 regression] test case gcc.dg/pr63594-2.c begins failing with r254862
Date: Fri, 30 Mar 2018 14:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85123
Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-30
CC| |bergner at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Confirmed. Here's a minimal test case. It looks like the code for test1float1
is what is causing the problems.
typedef float vfloat1 __attribute__ ((__vector_size__ (1 * sizeof (float))));
__attribute__ ((noinline, noclone))
vfloat1 test1float1 (float c)
{
vfloat1 v = { c };
return v;
}
void
test3float1 (void)
{
float c = 17;
int i;
vfloat1 a = test1float1 (c);
for (i = 0; i < 1; i++)
if (a[i] != 17)
__builtin_abort ();
}
int
main ()
{
test3float1 ();
return 0;
}
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Subject: [Bug fortran/52473] CSHIFT slow - inline it?
Date: Fri, 30 Mar 2018 14:01:00 -0000
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--- Comment #17 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Large-scale cshift is OK now.
The original test case, or inlining something like
b = cshift(a,-1) - 2*a + cshift(a,1)
to efficiently calculate a second derivative on a circular array would be
quite nice.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/85123] [8 regression] test case gcc.dg/pr63594-2.c begins failing with r254862
Date: Fri, 30 Mar 2018 15:17:00 -0000
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--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
So the code on LE and 32-bit BE for test1float1() looks like:
10000680: f0 ff 21 d0 stfs f1,-16(r1)
10000684: 00 00 42 60 ori r2,r2,0
10000688: f0 ff 61 80 lwz r3,-16(r1)
1000068c: 20 00 80 4e blr
while on 64-bit BE, we get:
100006c0: d0 21 ff f0 stfs f1,-16(r1)
100006c4: 60 42 00 00 ori r2,r2,0
100006c8: e8 61 ff f0 ld r3,-16(r1)
100006cc: 78 63 07 c6 rldicr r3,r3,32,31
100006d0: 4e 80 00 20 blr
which is wrong.
>From gcc-bugs-return-599793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 15:22:07 2018
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Subject: [Bug other/85123] [8 regression] test case gcc.dg/pr63594-2.c begins failing with r254862
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
This is a dup of PR84762.
*** This bug has been marked as a duplicate of bug 84762 ***
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Subject: [Bug target/84762] GCC for PowerPC32 violates the SysV ABI spec for small struct returns
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |seurer at gcc dot gnu.org
--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
*** Bug 85123 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 15:23:31 2018
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Subject: [Bug other/85123] [8 regression] test case gcc.dg/pr63594-2.c begins failing with r254862
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Closing as a dup. I will add the reduced test case found here over to PR84762.
>From gcc-bugs-return-599796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 15:27:26 2018
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Subject: [Bug target/84762] GCC for PowerPC32 violates the SysV ABI spec for small struct returns
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Peter Bergner <bergner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |bergner at gcc dot gnu.org
--- Comment #6 from Peter Bergner <bergner at gcc dot gnu.org> ---
Adding a link to Alan's comment about why that patch is wrong:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01547.html
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From: "cesar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/85056] [nvptx] wrong declaration of external arrays
Date: Fri, 30 Mar 2018 15:48:00 -0000
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--- Comment #5 from cesar at gcc dot gnu.org ---
Author: cesar
Date: Fri Mar 30 15:47:23 2018
New Revision: 258978
URL: https://gcc.gnu.org/viewcvs?rev=258978&root=gcc&view=rev
Log:
PR target/85056
Backport from mainline
2018-03-27 Cesar Philippidis <cesar@codesourcery.com>
PR target/85056
gcc/
* config/nvptx/nvptx.c (nvptx_assemble_decl_begin): Add '[]' to
extern array declarations.
gcc/testsuite/
* testsuite/gcc.target/nvptx/pr85056.c: New test.
* testsuite/gcc.target/nvptx/pr85056a.c: New test.
Added:
branches/gcc-6-branch/gcc/testsuite/gcc.target/nvptx/pr85056.c
branches/gcc-6-branch/gcc/testsuite/gcc.target/nvptx/pr85056a.c
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/config/nvptx/nvptx.c
branches/gcc-6-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/85130] Substrings out of range are not rejected
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-30
Ever confirmed|0 |1
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85131] New: ICE in gfc_conv_descriptor_data_get
Date: Fri, 30 Mar 2018 17:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85131
Bug ID: 85131
Summary: ICE in gfc_conv_descriptor_data_get
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: juergen.reuter at desy dot de
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The following code fails with gfortran 4.8.4, 5.4 and 8.0.1, so probably has
never worked correctly in gfortran. It works on ifort v17 and v18:
gfortran -c quantum_numbers.f90
quantum_numbers.f90:35:0:
if (present (col)) call qns%qn(i)%set (col=col(i))
internal compiler error: in gfc_conv_descriptor_data_get, at
fortran/trans-array.c:145
with
gfortran --version
GNU Fortran (GCC) 8.0.1 20180303 (experimental)
I am using svn revision 258198, but the problem is present also in gfortran
4.8.4 and 5.4. I haven't checked 6.4 or 7.3 yet.
Here is the source code, also attached:
module m
implicit none
private
type :: t1
end type t1
type :: t2
private
class(t1), allocatable :: c
contains
procedure :: set => t2_set
end type t2
type :: t3
private
integer :: length = 0
type(t2), dimension(:), allocatable :: qn
contains
procedure :: set => t3_set
end type t3
contains
impure elemental subroutine t2_set (qn, col)
class(t2), intent(inout) :: qn
class(t1), intent(in), optional :: col
end subroutine t2_set
subroutine t3_set (qns, col)
class(t3), intent(inout) :: qns
class(t1), dimension(:), intent(in), optional :: col
integer :: i
do i = 1, qns%length
if (present (col)) call qns%qn(i)%set (col=col(i))
end do
end subroutine t3_set
end module m
>From gcc-bugs-return-599800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 17:37:14 2018
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Subject: [Bug fortran/85131] ICE in gfc_conv_descriptor_data_get
Date: Fri, 30 Mar 2018 17:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85131
--- Comment #1 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Created attachment 43806
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43806&action=edit
Reproducer for the ICE
>From gcc-bugs-return-599801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 17:44:59 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85131] ICE in gfc_conv_descriptor_data_get
Date: Fri, 30 Mar 2018 17:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85131
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-30
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.8 up to trunk (8.0).
>From gcc-bugs-return-599802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 17:57:37 2018
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Subject: [Bug libgcc/85086] _Unwind_Resume can't unwind shadow stack with thread cancellation and alternate signal stack
Date: Fri, 30 Mar 2018 17:57:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
We changing the kernel not to use alternate shadow stack.
>From gcc-bugs-return-599803-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 17:57:38 2018
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Bug 81652 depends on bug 85086, which changed state.
Bug 85086 Summary: _Unwind_Resume can't unwind shadow stack with thread cancellation and alternate signal stack
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85086
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
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From: "manuel.lauss at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/85132] New: ffmpeg runtime segfault with lto
Date: Fri, 30 Mar 2018 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85132
Bug ID: 85132
Summary: ffmpeg runtime segfault with lto
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: manuel.lauss at googlemail dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
ffmpeg-3.4.2 built with gcc-8 as of 20180330 and LTO enabled causes a runtime
segfault:
Thread 1 "mpv" received signal SIGSEGV, Segmentation fault.
0x00007ffff686b305 in ff_sine_window_init (window=0x7ffff739a2c0 <ff_sine_960>,
n=960) at src/libavcodec/sinewin_tablegen.h:73
73 window[i] = SIN_FIX(sinf((i + 0.5) * (M_PI / (2.0 * n))));
(gdb) bt
#0 0x00007ffff686b305 in ff_sine_window_init (window=0x7ffff739a2c0
<ff_sine_960>, n=960) at src/libavcodec/sinewin_tablegen.h:73
#1 0x00007ffff6861d54 in aac_static_table_init () at
src/libavcodec/aacdec_template.c:1142
#2 0x00007ffff511d187 in __pthread_once_slow (once_control=0x7ffff7b4cf20
<aac_table_init.lto_priv>, init_routine=0x7ffff6861256 <aac_static_table_init>)
at pthread_once.c:116
#3 0x00007ffff6862aae in aac_decode_init (avctx=0xa5ef00) at
src/libavcodec/aacdec_template.c:1159
#4 0x00007ffff6ecbef6 in avcodec_open2 (avctx=0xa5ef00, codec=<optimized out>,
options=<optimized out>) at src/libavcodec/utils.c:1020
#5 0x0000000000502b3a in ?? ()
#6 0x00000000004fb7be in ?? ()
#7 0x000000000045afb7 in ?? ()
#8 0x000000000045b8af in ?? ()
#9 0x00000000004d3246 in ?? ()
#10 0x000000000040fa21 in ?? ()
#11 0x00007ffff4c8854b in __libc_start_main (main=0x40f9d0, argc=2,
argv=0x7fffffffd1c8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffffffd1b8)
at ../csu/libc-start.c:308
#12 0x000000000040fb9a in ?? ()
(gdb) disass
Dump of assembler code for function ff_sine_window_init:
0x00007ffff686b2c9 <+0>: push %r12
0x00007ffff686b2cb <+2>: mov %rdi,%r12
0x00007ffff686b2ce <+5>: push %rbp
0x00007ffff686b2cf <+6>: mov %esi,%ebp
0x00007ffff686b2d1 <+8>: push %rbx
0x00007ffff686b2d2 <+9>: xor %ebx,%ebx
0x00007ffff686b2d4 <+11>: cmp %ebx,%ebp
0x00007ffff686b2d6 <+13>: jle 0x7ffff686b310 <ff_sine_window_init+71>
0x00007ffff686b2d8 <+15>: vmovsd 0x878108(%rip),%xmm2 #
0x7ffff70e33e8
0x00007ffff686b2e0 <+23>: vcvtsi2sd %ebp,%xmm0,%xmm0
0x00007ffff686b2e4 <+27>: vaddsd %xmm0,%xmm0,%xmm0
0x00007ffff686b2e8 <+31>: vcvtsi2sd %ebx,%xmm1,%xmm1
0x00007ffff686b2ec <+35>: vaddsd 0x87811c(%rip),%xmm1,%xmm1 #
0x7ffff70e3410
0x00007ffff686b2f4 <+43>: vdivsd %xmm0,%xmm2,%xmm0
0x00007ffff686b2f8 <+47>: vmulsd %xmm1,%xmm0,%xmm0
0x00007ffff686b2fc <+51>: vcvtsd2ss %xmm0,%xmm0,%xmm0
0x00007ffff686b300 <+55>: callq 0x7ffff6801db0 <sinf@plt>
=> 0x00007ffff686b305 <+60>: vmovss %xmm0,(%r12,%rbx,4)
0x00007ffff686b30b <+66>: inc %rbx
0x00007ffff686b30e <+69>: jmp 0x7ffff686b2d4 <ff_sine_window_init+11>
0x00007ffff686b310 <+71>: pop %rbx
0x00007ffff686b311 <+72>: pop %rbp
0x00007ffff686b312 <+73>: pop %r12
0x00007ffff686b314 <+75>: retq
End of assembler dump.
(gdb) info registers
rax 0x0 0
rbx 0x0 0
rcx 0x1 1
rdx 0x78 120
rsi 0x3c0 960
rdi 0x7ffff739a2c0 140737341137600
rbp 0x3c0 0x3c0
rsp 0x7fffffffc840 0x7fffffffc840
r8 0x7fffffffa850 140737488332880
r9 0x7 7
r10 0xfffffffffffffd07 -761
r11 0x7ffff5682c90 140737310633104
r12 0x7ffff739a2c0 140737341137600
r13 0x7fffffffc9f8 140737488341496
r14 0x0 0
r15 0x0 0
rip 0x7ffff686b305 0x7ffff686b305 <ff_sine_window_init+60>
eflags 0x10202 [ IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
Without LTO it's fine, the assembly of the faulting function is the same.
I tried to isolate a testcase but failed.
ffmpeg built with:
configure --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--docdir=/usr/share/doc/ffmpeg-3.4.2-r1/html --mandir=/usr/share/man
--enable-share
d --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++
--ar=x86_64-pc-linux-gnu-ar --optflags=-O3 -ggdb -march=znver1 -mtune=znver1
-flto=16 -fno-fat-lto-objects -fno-strict-aliasing -fexpensive-optimizatio
ns -Wno-deprecated -pipe --disable-static --enable-avfilter --enable-avresample
--disable-stripping --enable-nonfree --enable-version3 --disable-indev=alsa
--disable-indev=oss --disable-indev=jack --disable-outde
v=alsa --disable-outdev=oss --enable-version3 --enable-version3 --enable-bzlib
--disable-runtime-cpudetect --disable-debug --disable-gcrypt --enable-gnutls
--enable-gmp --enable-gpl --enable-hardcoded-tables --en
able-iconv --enable-lzma --enable-network --disable-opencl --enable-openssl
--enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl2
--disable-vaapi --enable-vdpau --enable-xlib --enable-libxcb --en
able-libxcb-shm --enable-libxcb-xfixes --enable-zlib --disable-libcdio
--disable-libiec61883 --disable-libdc1394 --disable-libcaca --enable-openal
--enable-opengl --enable-libv4l2 --enable-libpulse --disable-libd
rm --enable-libopencore-amrwb --enable-libopencore-amrnb --disable-libfdk-aac
--enable-libopenjpeg --enable-libbluray --disable-libcelt --disable-libgme
--enable-libgsm --disable-mmal --disable-libmodplug --enabl
e-libopus --disable-libilbc --disable-librtmp --disable-libssh
--enable-libspeex --enable-librsvg --enable-libvorbis --enable-libvpx
--disable-libzvbi --disable-appkit --disable-libbs2b --disable-chromaprint --di
sable-libflite --disable-frei0r --disable-libfribidi --enable-fontconfig
--disable-ladspa --disable-libass --enable-libfreetype --disable-librubberband
--disable-libzmq --disable-libzimg --disable-libsoxr --enabl
e-pthreads --enable-libvo-amrwbenc --enable-libmp3lame --disable-libkvazaar
--enable-nvenc --disable-libopenh264 --disable-libsnappy --enable-libtheora
--disable-libtwolame --enable-libwavpack --enable-libwebp --
enable-libx264 --enable-libx265 --disable-libxvid --disable-armv5te
--disable-armv6 --disable-armv6t2 --disable-neon --disable-vfp --disable-vfpv3
--disable-armv8 --disable-mipsdsp --disable-mipsdspr2 --disable-m
ipsfpu --disable-altivec --disable-amd3dnow --disable-amd3dnowext
--disable-fma4 --disable-xop --enable-pic --cpu=znver1 --enable-lto
--disable-doc --disable-htmlpages --enable-manpages
Thanks!
Manuel
>From gcc-bugs-return-599805-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 18:39:13 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 c++/84791] ICE with broken OpenMP reduction clause
Date: Fri, 30 Mar 2018 18:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84791
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 30 18:38:36 2018
New Revision: 258981
URL: https://gcc.gnu.org/viewcvs?rev=258981&root=gcc&view=rev
Log:
PR c++/84791
* semantics.c (finish_omp_reduction_clause): If
OMP_CLAUSE_REDUCTION_PLACEHOLDER is error_mark_node, return true
even if processing_template_decl.
* g++.dg/gomp/pr84791.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/gomp/pr84791.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599806-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 19:00:51 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++/85133] New: [7/8 Regression] [concepts] ICE with invalid concept used in variadic template
Date: Fri, 30 Mar 2018 19:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85133
Bug ID: 85133
Summary: [7/8 Regression] [concepts] ICE with invalid concept
used in variadic template
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
Blocks: 67491
Target Milestone: ---
The following invalid code snippet (compiled with "-fconcepts")
triggers an ICE since GCC 7.1.0:
===========================================
template<typename> concept bool C;
template<C...> struct A {};
A<int> a;
===========================================
bug.cc:1:33: error: variable concept has no initializer
template<typename> concept bool C;
^
bug.cc:5:6: internal compiler error: in iterative_hash_template_arg, at
cp/pt.c:1713
A<int> a;
^
0x64ed6f iterative_hash_template_arg(tree_node*, unsigned int)
../../gcc-7.1.0/gcc/cp/pt.c:1713
0x64e280 iterative_hash_template_arg(tree_node*, unsigned int)
../../gcc-7.1.0/gcc/cp/pt.c:1732
0x65826d concept_spec_hasher::hash(concept_spec_entry*)
../../gcc-7.1.0/gcc/cp/pt.c:25880
0x65826d hash_table<concept_spec_hasher,
xcallocator>::find_slot(concept_spec_entry* const&, insert_option)
../../gcc-7.1.0/gcc/hash-table.h:414
0x65826d memoize_concept_satisfaction(tree_node*, tree_node*, tree_node*)
../../gcc-7.1.0/gcc/cp/pt.c:25941
0x85af29 satisfy_check_constraint
../../gcc-7.1.0/gcc/cp/constraint.cc:2058
0x85af29 satisfy_constraint_1
../../gcc-7.1.0/gcc/cp/constraint.cc:2247
0x85b460 satisfy_constraint
../../gcc-7.1.0/gcc/cp/constraint.cc:2302
0x85b866 constraints_satisfied_p(tree_node*, tree_node*)
../../gcc-7.1.0/gcc/cp/constraint.cc:2414
0x66579c gen_elem_of_pack_expansion_instantiation
../../gcc-7.1.0/gcc/cp/pt.c:11048
0x66579c tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
../../gcc-7.1.0/gcc/cp/pt.c:11504
0x85a6d8 satisfy_pack_expansion
../../gcc-7.1.0/gcc/cp/constraint.cc:1983
0x85a6d8 satisfy_constraint_1
../../gcc-7.1.0/gcc/cp/constraint.cc:2274
0x85b460 satisfy_constraint
../../gcc-7.1.0/gcc/cp/constraint.cc:2302
0x85b553 satisfy_associated_constraints
../../gcc-7.1.0/gcc/cp/constraint.cc:2326
0x85b896 constraints_satisfied_p(tree_node*, tree_node*)
../../gcc-7.1.0/gcc/cp/constraint.cc:2416
0x699158 lookup_template_class_1
../../gcc-7.1.0/gcc/cp/pt.c:8707
0x699158 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc-7.1.0/gcc/cp/pt.c:9009
0x7af3dd finish_template_type(tree_node*, tree_node*, int)
../../gcc-7.1.0/gcc/cp/semantics.c:3151
0x736c44 cp_parser_template_id
../../gcc-7.1.0/gcc/cp/parser.c:15495
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
>From gcc-bugs-return-599807-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 19:19:52 2018
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Subject: [Bug c++/85134] New: [8 Regression] ICE with invalid constexpr in 'shared' OpenMP clause
Date: Fri, 30 Mar 2018 19:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85134
Bug ID: 85134
Summary: [8 Regression] ICE with invalid constexpr in 'shared'
OpenMP clause
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code, openmp
Severity: normal
Priority: P3
Component: c++
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Reporter: reichelt at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
The following invalid code snippet (compiled with "-fopenmp")
triggers an ICE on trunk.
=======================================
void foo(int i)
{
constexpr int x[i] = {};
#pragma omp parallel shared(x)
;
}
=======================================
bug.cc: In function 'void foo(int)':
bug.cc:3:25: error: 'constexpr' variable 'x' has variably-modified type 'const
int [i]'
constexpr int x[i] = {};
^
bug.cc:5:9: internal compiler error: Segmentation fault
#pragma omp parallel shared(x)
^~~
0xebc6ef crash_signal
../../gcc/gcc/toplev.c:325
0xc61cac omp_add_variable
../../gcc/gcc/gimplify.c:6820
0xc763de gimplify_scan_omp_clauses
../../gcc/gcc/gimplify.c:8355
0xc66155 gimplify_omp_parallel
../../gcc/gcc/gimplify.c:9520
0xc66155 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11907
0xc698a6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6a5cc gimplify_bind_expr
../../gcc/gcc/gimplify.c:1331
0xc676ba gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11635
0xc698a6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6b29a gimplify_body(tree_node*, bool)
../../gcc/gcc/gimplify.c:12635
0xc6b794 gimplify_function_tree(tree_node*)
../../gcc/gcc/gimplify.c:12800
0xaf02b7 cgraph_node::analyze()
../../gcc/gcc/cgraphunit.c:670
0xaf2c53 analyze_functions
../../gcc/gcc/cgraphunit.c:1131
0xaf3a52 symbol_table::finalize_compilation_unit()
../../gcc/gcc/cgraphunit.c:2691
Please submit a full bug report, [etc.]
The regression was introduced between 2018-02-25 and 2018-03-02,
most likely by Jason's fix r258015 for PR84559.
Before the code was wrongly accepted.
>From gcc-bugs-return-599808-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 19:32:06 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
Date: Fri, 30 Mar 2018 19:32:00 -0000
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Peter Bergner <bergner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2018-03/msg01596.ht
| |ml
Assignee|unassigned at gcc dot gnu.org |bergner at gcc dot gnu.org
>From gcc-bugs-return-599809-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 19:35:51 2018
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Subject: [Bug c++/85135] New: [7/8 Regression] ICE with invalid late-specified return type
Date: Fri, 30 Mar 2018 19:35:00 -0000
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Bug ID: 85135
Summary: [7/8 Regression] ICE with invalid late-specified
return type
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 {};
auto foo() -> A;
template<typename> struct B {};
auto foo() -> A;
====================================
bug.cc:7:15: internal compiler error: canonical types differ for identical
types A and A
auto foo() -> A;
^
0x75c440 comptypes(tree_node*, tree_node*, int)
../../gcc-7.1.0/gcc/cp/typeck.c:1433
0x6229a8 decls_match(tree_node*, tree_node*)
../../gcc-7.1.0/gcc/cp/decl.c:1085
0x6232fc duplicate_decls(tree_node*, tree_node*, bool)
../../gcc-7.1.0/gcc/cp/decl.c:1409
0x810ee8 pushdecl_maybe_friend_1
../../gcc-7.1.0/gcc/cp/name-lookup.c:835
0x810ee8 pushdecl_maybe_friend(tree_node*, bool)
../../gcc-7.1.0/gcc/cp/name-lookup.c:1352
0x639635 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc-7.1.0/gcc/cp/decl.c:5137
0x722a07 cp_parser_init_declarator
../../gcc-7.1.0/gcc/cp/parser.c:19255
0x74718c cp_parser_simple_declaration
../../gcc-7.1.0/gcc/cp/parser.c:12777
0x747f25 cp_parser_block_declaration
../../gcc-7.1.0/gcc/cp/parser.c:12602
0x74d3d4 cp_parser_declaration
../../gcc-7.1.0/gcc/cp/parser.c:12500
0x74f00b cp_parser_declaration_seq_opt
../../gcc-7.1.0/gcc/cp/parser.c:12376
0x74f2ea cp_parser_translation_unit
../../gcc-7.1.0/gcc/cp/parser.c:4366
0x74f2ea c_parse_file()
../../gcc-7.1.0/gcc/cp/parser.c:38431
0x8b25e3 c_common_parse_file()
../../gcc-7.1.0/gcc/c-family/c-opts.c:1107
Please submit a full bug report, [etc.]
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Fri, 30 Mar 2018 19:36:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Hi Manual.
Can you please reduce a bit the configure options. The package requires many
libraries as dependency. How do you invoke ffmpeg to expose the crash?
>From gcc-bugs-return-599811-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 20:33:35 2018
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From: "manuel.lauss at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Fri, 30 Mar 2018 20:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85132
--- Comment #2 from Manuel Lauss <manuel.lauss at googlemail dot com> ---
This is the most minimal ffmpeg config that can trigger the segfault. The
interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
with a standard mp4 video file to trigger it
(https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
configure --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--docdir=/usr/share/doc/ffmpeg-3.4.2-r1/html --mandir=/usr/share/man
--enable-share
d --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++
--ar=x86_64-pc-linux-gnu-ar --optflags=-O3 -ggdb -march=znver1 -mtune=znver1
-flto=16 -fno-fat-lto-objects -pipe --disable-static --enable-avfilter
--enable-avresample --disable-stripping --disable-encoders --disable-indev=v4l2
--disable-outdev=v4l2 --disable-indev=alsa --disable-indev=oss --disable
-indev=jack --disable-outdev=alsa --disable-outdev=oss --disable-outdev=sdl
--disable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt
--disable-gnutls --disable-gmp --enable-gpl --enable-hardco
ded-tables --disable-iconv --disable-lzma --disable-network --disable-opencl
--disable-openssl --disable-postproc --disable-libsmbclient --disable-ffplay
--disable-sdl2 --disable-vaapi --disable-vdpau --disable-x
lib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes
--disable-zlib --disable-libcdio --disable-libiec61883 --disable-libdc1394
--disable-libcaca --disable-openal --disable-opengl --disable-libv4l2 -
-disable-libpulse --disable-libdrm --disable-libopencore-amrwb
--disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg
--disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disa
ble-mmal --disable-libmodplug --disable-libopus --disable-libilbc
--disable-librtmp --disable-libssh --disable-libspeex --disable-librsvg
--disable-libvorbis --disable-libvpx --disable-libzvbi --disable-appkit --
disable-libbs2b --disable-chromaprint --disable-libflite --disable-frei0r
--disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass
--disable-libfreetype --disable-librubberband --disable-libzmq
--disable-libzimg --disable-libsoxr --enable-pthreads --disable-armv5te
--disable-armv6 --disable-armv6t2 --disable-neon --disable-vfp --disable-vfpv3
--disable-armv8 --disable-mipsdsp --disable-mipsdspr2 --disa
ble-mipsfpu --disable-altivec --disable-amd3dnow --disable-amd3dnowext
--disable-fma4 --disable-xop --cpu=znver1 --enable-lto --disable-doc
--disable-htmlpages --enable-manpages
>From gcc-bugs-return-599812-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 20:34:51 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++/85136] New: ICE with array as template variable
Date: Fri, 30 Mar 2018 20:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85136
Bug ID: 85136
Summary: ICE with array as template variable
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 5.1.0
(when variable templates were introduced):
================================================
enum { e };
template<int> const int x[] = { [e] = 0 };
================================================
bug.cc:3:41: internal compiler error: tree check: expected integer_cst, have
nop_expr in get_len, at tree.h:5572
template<int> const int x[] = { [e] = 0 };
^
0x78c8a6 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9322
0x67da95 tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3391
0x67da95 wi::extended_tree<192>::get_len() const
../../gcc/gcc/tree.h:5572
0x67da95 wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/gcc/wide-int.h:934
0x67da95 wide_int_ref_storage<true,
false>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/gcc/wide-int.h:983
0x67da95 generic_wide_int<wide_int_ref_storage<true, false>
>::generic_wide_int<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/gcc/wide-int.h:758
0x67da95 bool wi::lts_p<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/gcc/wide-int.h:1849
0x67da95 wi::binary_traits<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >,
wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type,
wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::precision_type>::signed_predicate_result operator<
<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/gcc/wide-int.h:3170
0x67da95 tree_int_cst_lt(tree_node const*, tree_node const*)
../../gcc/gcc/tree.h:5728
0x67da95 complete_array_type(tree_node**, tree_node*, bool)
../../gcc/gcc/c-family/c-common.c:6363
0x887821 cp_complete_array_type(tree_node**, tree_node*, bool)
../../gcc/gcc/cp/decl.c:8369
0x887a4e maybe_deduce_size_from_array_init
../../gcc/gcc/cp/decl.c:5474
0x8a047c cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:7030
0x93c9fb cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19741
0x942fca cp_parser_single_declaration
../../gcc/gcc/cp/parser.c:27303
0x94310c cp_parser_template_declaration_after_parameters
../../gcc/gcc/cp/parser.c:26905
0x9439cc cp_parser_explicit_template_declaration
../../gcc/gcc/cp/parser.c:27142
0x9439cc cp_parser_template_declaration_after_export
../../gcc/gcc/cp/parser.c:27161
0x948d69 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12731
0x949051 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12658
Please submit a full bug report, [etc.]
>From gcc-bugs-return-599813-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 20:49:28 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85137] New: [concepts] ICE with undeclared concept
Date: Fri, 30 Mar 2018 20:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85137
Bug ID: 85137
Summary: [concepts] ICE with undeclared concept
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
Blocks: 67491
Target Milestone: ---
The following invalid code snippet (compiled with "-fconcepts")
triggers an ICE since GCC 6.1.0:
==============================================================
template<template<typename> requires C class> struct A {};
template<typename> requires true struct B {};
A<B> a;
==============================================================
bug.cc:1:38: error: 'C' was not declared in this scope
template<template<typename> requires C class> struct A {};
^
bug.cc:5:4: internal compiler error: in non_atomic_constraint_p, at
cp/logic.cc:318
A<B> a;
^
0x617ec5 non_atomic_constraint_p
../../gcc/gcc/cp/logic.cc:318
0x8e36e0 any_p<std::_List_iterator<tree_node*>, bool (*)(tree_node*)>
../../gcc/gcc/cp/logic.cc:67
0x8e36e0 any_non_atomic_constraints_p
../../gcc/gcc/cp/logic.cc:327
0x8e36e0 analyze_atom
../../gcc/gcc/cp/logic.cc:359
0x8e36e0 analyze_term
../../gcc/gcc/cp/logic.cc:468
0x8e36e0 check_term
../../gcc/gcc/cp/logic.cc:495
0x8e28df check_goal
../../gcc/gcc/cp/logic.cc:511
0x8e28df check_proof
../../gcc/gcc/cp/logic.cc:537
0x8e28df prove_implication
../../gcc/gcc/cp/logic.cc:754
0x8e3499 prove_implication
../../gcc/gcc/cp/logic.cc:731
0x8e3499 subsumes_constraints_nonnull
../../gcc/gcc/cp/logic.cc:786
0x8e3499 subsumes(tree_node*, tree_node*)
../../gcc/gcc/cp/logic.cc:803
0x98488b is_compatible_template_arg
../../gcc/gcc/cp/pt.c:7705
0x98488b convert_template_argument
../../gcc/gcc/cp/pt.c:7944
0x982893 coerce_template_parms
../../gcc/gcc/cp/pt.c:8480
0x97ba36 lookup_template_class_1
../../gcc/gcc/cp/pt.c:9032
0x97ba36 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:9381
0x9ac5bd finish_template_type(tree_node*, tree_node*, int)
../../gcc/gcc/cp/semantics.c:3227
0x928784 cp_parser_template_id
../../gcc/gcc/cp/parser.c:15852
0x92888e cp_parser_class_name
../../gcc/gcc/cp/parser.c:22383
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
>From gcc-bugs-return-599814-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 21:04:39 2018
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Subject: [Bug tree-optimization/84818] integer_onep must not be used for i18n
Date: Fri, 30 Mar 2018 21:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84818
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed via r258983.
>From gcc-bugs-return-599815-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 30 21:04:44 2018
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Subject: [Bug tree-optimization/84818] integer_onep must not be used for i18n
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84818
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Mar 30 21:04:06 2018
New Revision: 258983
URL: https://gcc.gnu.org/viewcvs?rev=258983&root=gcc&view=rev
Log:
PR tree-optimization/84818 - integer_onep must not be used for i18n
gcc/ChangeLog:
PR tree-optimization/84818
* builtins.c (check_access): Use warning_n.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
>From gcc-bugs-return-599816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 00:52:42 2018
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Subject: [Bug testsuite/80546] [7/8 Regression] FAIL: gcc.target/powerpc/bool3-p[78].c scan-assembler-not
Date: Sat, 31 Mar 2018 00:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80546
--- Comment #12 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Sat Mar 31 00:52:01 2018
New Revision: 258987
URL: https://gcc.gnu.org/viewcvs?rev=258987&root=gcc&view=rev
Log:
PR target/80546
* config/rs6000/vsx.md (??r): New mode attribute.
(*vsx_mov<mode>_64bit): Use it.
(*vsx_mov<mode>_32bit): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/vsx.md
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/83315] PowerPC xmmintrin.h emulation for _mm_{min,max}_ps not semantically equivalent
Date: Sat, 31 Mar 2018 03:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83315
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Sat Mar 31 03:05:35 2018
New Revision: 258988
URL: https://gcc.gnu.org/viewcvs?rev=258988&root=gcc&view=rev
Log:
rs6000: Fix _mm_min_ps and _mm_max_ps (PR83315)
This makes _mm_{min,max}_ps work correctly for QNaNs.
PR target/83315
* config/rs6000/xmmintrin.h (_mm_set_ps, _mm_max_ps): Handle (quiet)
NaN inputs correctly.
gcc/testsuite/
PR target/83315
* gcc.target/powerpc/sse-maxps-2.c: New test.
* gcc.target/powerpc/sse-minps-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/sse-maxps-2.c
trunk/gcc/testsuite/gcc.target/powerpc/sse-minps-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/xmmintrin.h
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83315] PowerPC xmmintrin.h emulation for _mm_{min,max}_ps not semantically equivalent
Date: Sat, 31 Mar 2018 03:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83315
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed.
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From: "abensonca at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85138] New: ICE with generic function
Date: Sat, 31 Mar 2018 03:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85138
Bug ID: 85138
Summary: ICE with generic function
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: abensonca at gmail dot com
Target Milestone: ---
The following (reduced from a much larger module) causes an ICE with gfortran
8.0.1 r258983:
module fox_m_fsys_format
interface len
module procedure str_real_sp_len, str_real_sp_fmt_len
end interface
contains
pure function str_real_sp_fmt_len(x, fmt) result(n)
real, intent(in) :: x
character(len=*), intent(in) :: fmt
if (.not.checkFmt(fmt)) then
endif
end function str_real_sp_fmt_len
pure function str_real_sp_len(x) result(n)
real, intent(in) :: x
n = len(x, "")
end function str_real_sp_len
function str_real_dp_matrix(xa) result(s)
real, intent(in) :: xa
character(len=len(xa)) :: s
end function str_real_dp_matrix
end module fox_m_fsys_format
$ 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++,fort
an --disable-multilib
Thread model: posix
gcc version 8.0.1 20180330 (experimental) (GCC)
$ gfortran -c tmp3.F90
tmp3.F90:9:0:
if (.not.checkFmt(fmt)) then
internal compiler error: in gfc_typenode_for_spec, at
fortran/trans-types.c:1157
0x5ee3b2 gfc_typenode_for_spec(gfc_typespec*, int)
../../gcc-trunk/gcc/fortran/trans-types.c:1157
0x889d77 gfc_conv_unary_op
../../gcc-trunk/gcc/fortran/trans-expr.c:2802
0x887060 gfc_conv_expr_op
../../gcc-trunk/gcc/fortran/trans-expr.c:3317
0x887060 gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7918
0x889cc7 gfc_conv_expr_val(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7975
0x8c00d7 gfc_trans_if_1
../../gcc-trunk/gcc/fortran/trans-stmt.c:1427
0x8c8dba gfc_trans_if(gfc_code*)
../../gcc-trunk/gcc/fortran/trans-stmt.c:1464
0x84ca37 trans_code
../../gcc-trunk/gcc/fortran/trans.c:1916
0x878a2d gfc_generate_function_code(gfc_namespace*)
../../gcc-trunk/gcc/fortran/trans-decl.c:6507
0x850cc1 gfc_generate_module_code(gfc_namespace*)
../../gcc-trunk/gcc/fortran/trans.c:2222
0x80333b translate_all_program_units
../../gcc-trunk/gcc/fortran/parse.c:6108
0x80333b gfc_parse_file()
../../gcc-trunk/gcc/fortran/parse.c:6324
0x849b8f gfc_be_parse_file
../../gcc-trunk/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 c++/85027] [6/7/8 Regression] ICE on invalid C++ code: in instantiate_type, at cp/class.c:8062
Date: Sat, 31 Mar 2018 03:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85027
--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Sat Mar 31 03:44:12 2018
New Revision: 258989
URL: https://gcc.gnu.org/viewcvs?rev=258989&root=gcc&view=rev
Log:
[PR c++/85027] deal with baselink in save_expr in instantiate_type
We use SAVE_EXPRs in conditional expressions without the middle
operand, to evaluate the first operand only once. When the conversion
of the first operand fails, we may call instantiate_type get a better
error message. We have code to peel off the SAVE_EXPR there, but then
we may end up with a BASELINK, and we're past the code that deals with
BASELINKs. Reorder the tests so that we expose the saved expr first,
and then deal with BASELINKs.
for gcc/cp/ChangeLog
PR c++/85027
* class.c (instantiate_type): Peel off SAVE_EXPR before
BASELINK.
for gcc/testsuite/ChangeLog
PR c++/85027
* g++.dg/pr85027.C: New.
Added:
trunk/gcc/testsuite/g++.dg/pr85027.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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From: "raj.khem at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/85139] New: Spurious format truncation warning
Date: Sat, 31 Mar 2018 04:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85139
Bug ID: 85139
Summary: Spurious format truncation warning
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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This test case
==================================
#include <stdio.h>
#include <stdlib.h>
extern const char *modalias_usb(const char *p, const char *v);
char s[16];
const char *modalias_usb(const char *p, const char *v) {
int vn, pn;
vn = strtol(v, NULL, 16);
if (vn <= 0)
return NULL;
pn = strtol(p, NULL, 16);
if (pn <= 0)
return NULL;
snprintf(s, sizeof(s), "usb:v%04Xp%04X*", vn, pn);
return s;
}
========================================
Results in a format truncation warning
oe-workdir/recipe-sysroot-native/usr/bin/aarch64-bec-linux/aarch64-bec-linux-gcc
--sysroot=/mnt/a/zonit/build/tmp/work/aarch64-bec-linux/systemd/1_237-r0/recipe-sysroot
-Wformat -O a.c -c -Werror
a.c: In function 'modalias_usb':
a.c:17:43: error: '%04X' directive output may be truncated writing between 4
and 8 bytes into a region of size between 2 and 6 [-Werror=format-truncation=]
snprintf(s, sizeof(s), "usb:v%04Xp%04X*", vn, pn);
^~~~
a.c:17:32: note: directive argument in the range [1, 2147483647]
snprintf(s, sizeof(s), "usb:v%04Xp%04X*", vn, pn);
^~~~~~~~~~~~~~~~~
a.c:17:9: note: 'snprintf' output between 16 and 24 bytes into a destination of
size 16
snprintf(s, sizeof(s), "usb:v%04Xp%04X*", vn, pn);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
This works fine with gcc7
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Subject: [Bug fortran/85138] [8 regression] ICE with generic function
Date: Sat, 31 Mar 2018 07:37:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-31
CC| |pault at gcc dot gnu.org
Summary|ICE with generic function |[8 regression] ICE with
| |generic function
Ever confirmed|0 |1
--- Comment #1 from Paul Thomas <pault at gcc dot gnu.org> ---
Confirmed as a regression in 8-branch.
Earlier branches give
if (.not.checkFmt(fmt)) then
1
Error: Reference to impure function ‘checkfmt’ at (1) within a PURE procedure
Adding:
interface
pure logical function checkFmt(arg)
character(len = *), intent(in) :: arg
end function
end interface
makes the problem go away.
Paul
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-03-31
Ever confirmed|0 |1
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Manuel Lauss from comment #2)
> This is the most minimal ffmpeg config that can trigger the segfault. The
> interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
> with a standard mp4 video file to trigger it
> (https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
Good. so we have minimal set of options for ffmpeg. Now please explain me how
to build the MPV tool? Is it really needed? Can't one trigger that directly
with ffmepg? Please upload somewhere the mp4 file so that I can reproduce it.
>From gcc-bugs-return-599824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 08:19:22 2018
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From: "manuel.lauss at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Sat, 31 Mar 2018 08:19:00 -0000
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--- Comment #4 from Manuel Lauss <manuel.lauss at googlemail dot com> ---
(In reply to Martin Liška from comment #3)
> (In reply to Manuel Lauss from comment #2)
> > This is the most minimal ffmpeg config that can trigger the segfault. The
> > interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
> > with a standard mp4 video file to trigger it
> > (https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
>
> Good. so we have minimal set of options for ffmpeg. Now please explain me
> how to build the MPV tool? Is it really needed? Can't one trigger that
> directly with ffmepg? Please upload somewhere the mp4 file so that I can
> reproduce it.
The segfault happens during initialization of ffmpeg when mpv player starts. I
can also trigger it with firefox on e.g. youtube: it crashes the tab.
ad mpv: unpack, configure with the following line (you need python3):
CCFLAGS="-O3 -march=znver1 -mtune=znver1 -flto=16 -fno-fat-lto-objects -pipe"
LINKFLAGS="-O3 -march=znver1 -mtune=znver1 -flto=16 -fno-fat-lto-objects -pipe
-Wl,--no-as-needed" ./waf --prefix=/usr --libdir=/usr/lib64 --confdir=/etc/mpv
--docdir=/usr/share/doc/mpv-0.27.2 --htmldir=/usr/share/doc/mpv-0.27.2/html
--enable-libmpv-shared --disable-libmpv-static --disable-static-build
--disable-optimize --disable-debug-build --enable-html-build
--disable-pdf-build --enable-cplugins --disable-zsh-comp --disable-test
--disable-android --enable-iconv --disable-libsmbclient --enable-lua
--lua=luajit --disable-javascript --enable-x11 --disable-build-date configure
./waf build
>From gcc-bugs-return-599825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 08:24:57 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85138] [8 regression] ICE with generic function
Date: Sat, 31 Mar 2018 08:24:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Priority|P3 |P4
Known to work| |6.4.0, 7.3.0
Target Milestone|--- |8.0
Known to fail| |8.0.1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Up to revision r258235 (2018-03-04) compiling the test gave the error
if (.not.checkFmt(fmt)) then
1
Error: Reference to impure function 'checkfmt' at (1) within a PURE procedure
After revision r258362 (2018-03-08) I get the ICE. This has been back ported to
7.3.1.
In this range I see only r258281, r258305, and r258347, but r258305 has not
been back ported.
>From gcc-bugs-return-599826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 08:41:23 2018
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Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Sat, 31 Mar 2018 08:41:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Manuel Lauss from comment #4)
> (In reply to Martin Liška from comment #3)
> > (In reply to Manuel Lauss from comment #2)
> > > This is the most minimal ffmpeg config that can trigger the segfault. The
> > > interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
> > > with a standard mp4 video file to trigger it
> > > (https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
> >
> > Good. so we have minimal set of options for ffmpeg. Now please explain me
> > how to build the MPV tool? Is it really needed? Can't one trigger that
> > directly with ffmepg? Please upload somewhere the mp4 file so that I can
> > reproduce it.
>
> The segfault happens during initialization of ffmpeg when mpv player starts.
> I can also trigger it with firefox on e.g. youtube: it crashes the tab.
Ok, so please download following sample video:
http://techslides.com/demos/sample-videos/small.mp4
And try to run ffmpeg to print info:
./ffmpeg -i small.mp4
Does it also segfault?
>
>
> ad mpv: unpack, configure with the following line (you need python3):
> CCFLAGS="-O3 -march=znver1 -mtune=znver1 -flto=16 -fno-fat-lto-objects
> -pipe" LINKFLAGS="-O3 -march=znver1 -mtune=znver1 -flto=16
> -fno-fat-lto-objects -pipe -Wl,--no-as-needed" ./waf --prefix=/usr
> --libdir=/usr/lib64 --confdir=/etc/mpv --docdir=/usr/share/doc/mpv-0.27.2
> --htmldir=/usr/share/doc/mpv-0.27.2/html --enable-libmpv-shared
> --disable-libmpv-static --disable-static-build --disable-optimize
> --disable-debug-build --enable-html-build --disable-pdf-build
> --enable-cplugins --disable-zsh-comp --disable-test --disable-android
> --enable-iconv --disable-libsmbclient --enable-lua --lua=luajit
> --disable-javascript --enable-x11 --disable-build-date configure
>
> ./waf build
How the player knows where to find the built ffmpeg libraries?
>From gcc-bugs-return-599827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 08:53:27 2018
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Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
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--- Comment #6 from Manuel Lauss <manuel.lauss at googlemail dot com> ---
(In reply to Martin Liška from comment #5)
> (In reply to Manuel Lauss from comment #4)
> > (In reply to Martin Liška from comment #3)
> > > (In reply to Manuel Lauss from comment #2)
> > > > This is the most minimal ffmpeg config that can trigger the segfault. The
> > > > interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
> > > > with a standard mp4 video file to trigger it
> > > > (https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
> > >
> > > Good. so we have minimal set of options for ffmpeg. Now please explain me
> > > how to build the MPV tool? Is it really needed? Can't one trigger that
> > > directly with ffmepg? Please upload somewhere the mp4 file so that I can
> > > reproduce it.
> >
> > The segfault happens during initialization of ffmpeg when mpv player starts.
> > I can also trigger it with firefox on e.g. youtube: it crashes the tab.
>
> Ok, so please download following sample video:
> http://techslides.com/demos/sample-videos/small.mp4
>
> And try to run ffmpeg to print info:
> ./ffmpeg -i small.mp4
>
> Does it also segfault?
Yes, same backtrace, same fault location.
>From gcc-bugs-return-599828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 09:06:36 2018
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Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Manuel Lauss from comment #6)
> (In reply to Martin Liška from comment #5)
> > (In reply to Manuel Lauss from comment #4)
> > > (In reply to Martin Liška from comment #3)
> > > > (In reply to Manuel Lauss from comment #2)
> > > > > This is the most minimal ffmpeg config that can trigger the segfault. The
> > > > > interesting switch is "--enabled-hardcoded-tables". I use the "mpv" Player
> > > > > with a standard mp4 video file to trigger it
> > > > > (https://github.com/mpv-player/mpv/archive/v0.27.2.zip)
> > > >
> > > > Good. so we have minimal set of options for ffmpeg. Now please explain me
> > > > how to build the MPV tool? Is it really needed? Can't one trigger that
> > > > directly with ffmepg? Please upload somewhere the mp4 file so that I can
> > > > reproduce it.
> > >
> > > The segfault happens during initialization of ffmpeg when mpv player starts.
> > > I can also trigger it with firefox on e.g. youtube: it crashes the tab.
> >
> > Ok, so please download following sample video:
> > http://techslides.com/demos/sample-videos/small.mp4
> >
> > And try to run ffmpeg to print info:
> > ./ffmpeg -i small.mp4
> >
> > Does it also segfault?
>
> Yes, same backtrace, same fault location.
Hm, I put __builtin_abort to:
static av_cold void aac_static_table_init(void)
function. And it's unfortunately called. Probably because:
$ ./ffmpeg -i small.mp4 test.mp3
...
Decoder (codec aac) not found for input stream #0:1
Are you sure the configure options enable the codec (AAC)?
>From gcc-bugs-return-599829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 09:47:43 2018
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Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Stupid mistake from me. Now I can reproduce that:
LD_LIBRARY_PATH=./libavcodec/ gdb --args ./ffmpeg -i small.mp4
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |INVALID
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
So it's really caused by --enable-hardcoded-tables. With that you have in
sinewin.c pre-processed source file:
extern const INTFLOAT __attribute__ ((aligned (32))) ff_sine_960[960];
As you can se, it's const (a.k.a. READONLY). Thus doing a write to it in
ff_sine_window_init causes a segfault.
Thus closing as invalid.
>From gcc-bugs-return-599831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 10:53:58 2018
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Subject: [Bug fortran/85138] [8 regression] ICE with generic function
Date: Sat, 31 Mar 2018 10:53:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at troutmask dot apl.washing
| |ton.edu
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> Up to revision r258235 (2018-03-04) compiling the test gave the error
>
> if (.not.checkFmt(fmt)) then
> 1
> Error: Reference to impure function 'checkfmt' at (1) within a PURE procedure
>
> After revision r258362 (2018-03-08) I get the ICE. This has been back ported
> to 7.3.1.
>
> In this range I see only r258281, r258305, and r258347, but r258305 has not
> been back ported.
Bizarrely it is r258347 that is the trigger. It has been backported without any
ill effects.
Paul
>From gcc-bugs-return-599832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 12:44:33 2018
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From: "steffen at sdaoden dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 12:44:00 -0000
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--- Comment #3 from Steffen Nurpmeso <steffen at sdaoden dot eu> ---
One more, and just to point that out. This code will in a not too distant
future see its 20th birthday (though not updated for long). It has been
developed on Linux and FreeBSD with the wonderful (me thinks) gcc:
* GCC (GNU-Compiler-Collection, www.gnu.org).
- Not supported at all before 2.95.0.
- 2.95.1 never tested.
- 2.95.2 and 2.95.3 compile the library without errors.
The problem with them is that they are not able to handle the
free-from template pointer-to-member (PTM),
as well as the EventListener PTM specialization of
SF::Sys::Misc::Sender correctly.
This is a no-go for further..
...
(Some of the tests in test/ will not compile, though.)
(Note: 2.95.2 has not been tested for a long time.
2.95.3 is part of the test-suite at the time of this writing
aka TAG 0.6.0.)
- 2.95.4 and above. Should work perfectly (since we take care
of its bugs).
Tested:
+ 2.95.4.
+ 3.0.4.
+ 3.3.3.
+ 3.4.2 (== buggy thing which doesn't like [unnamed] unions
and required me to perform a major rewrite! Grrr.).
Thank you very much, ladies!
I would program Java without it! (Guess that!!!)
And despite absolutely idiotic C++ "improvements" like obsoleting the "auto"
keyword and introducing override (yes) as a declaration suffix (no) that i had
to fix (we had override, as a macro that expanded to virtual) it compiles and
runs just perfectly, even using sysctl(2) and getdents(64)?(2) syscalls on
modern Linux. Yet only with clang, what a shame.
For me this is a gcc bug.
Ciao.
>From gcc-bugs-return-599833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 13:26:46 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 13:26:00 -0000
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
template <class T> class a;
struct b {
typedef a<b> a;
};
Is the reduced testcase. The C++ standard is clear here about this case too.
A diagnostic is not required either. Gcc generates one as it can.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Sat, 31 Mar 2018 13:35:00 -0000
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--- Comment #10 from Manuel Lauss <manuel.lauss at googlemail dot com> ---
Built with gcc-7.3.0 and LTO it works fine; is this a bug in 7.3.0 instead
then?
>From gcc-bugs-return-599835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 13:44:22 2018
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Subject: [Bug c++/85140] New: ICE with invalid use of alignas
Date: Sat, 31 Mar 2018 13:44:00 -0000
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Bug ID: 85140
Summary: ICE with invalid use of alignas
Product: gcc
Version: 8.0
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Priority: P3
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The following invalid coide snippet triggers an ICE since GCC 4.8.0:
=============================
namespace N alignas() {}
=============================
bug.cc:1:21: error: expected primary-expression before ')' token
namespace N alignas() {}
^
bug.cc:1:24: internal compiler error: tree check: expected tree_list, have
error_mark in get_attribute_name, at attribs.c:835
namespace N alignas() {}
^
0x78c848 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9322
0x9fa8a5 tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3391
0x9fa8a5 get_attribute_name(tree_node const*)
../../gcc/gcc/attribs.c:835
0x8ffbad handle_namespace_attrs(tree_node*, tree_node*)
../../gcc/gcc/cp/name-lookup.c:5049
0x9496bf cp_parser_namespace_definition
../../gcc/gcc/cp/parser.c:18585
0x948cd3 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12762
0x948fd1 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12658
0x9492c4 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4563
0x9492c4 c_parse_file()
../../gcc/gcc/cp/parser.c:39024
0xa48b26 c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1132
Please submit a full bug report, [etc.]
>From gcc-bugs-return-599836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 14:32:03 2018
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From: "development@faf-ltd.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84744] cannot use glibc 2.27 with gcc 7.3
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--- Comment #10 from Peter VARGA <development@faf-ltd.com> ---
(In reply to Jonathan Wakely from comment #8)
> You need to recompile gcc telling it to use the new glibc.
>
> When GCC is built it creates fixed dependencies on the C library. You can't
> just point it to a new libc and expect it to work. A new C library needs a
> new compiler as well.
>
> So build GCC (see https://gcc.gnu.org/wiki/InstallingGCC for a starting
> point) and add --with-native-system-header-dir=/FaF/glibc/include/ to the
> configure options.
The option --with-native-system-header-dir=/FaF/glibc/include/ didn't work.
Now, the include errors appear while compiling gcc.
Below some extract.
I am working on SLES 12 SP3 - the system glibc version is 2.22. OK it is 3
years old.
I am using the newest glibc version 2.27 only for my project.
The question is if I really need the newest version. It makes the whole process
only too complicated.
--------------------------------------------------------------------------------
In file included from /FaF/glibc/include/errno.h:28:0,
from ../../../gcc-7.3.0/libgcc/../gcc/tsystem.h:93,
from ../../../gcc-7.3.0/libgcc/libgcc2.c:27:
/FaF/glibc/include/bits/errno.h:26:11: fatal error: linux/errno.h: No such file
or directory
# include <linux/errno.h>
^~~~~~~~~~~~~~~
In file included from /FaF/glibc/include/errno.h:28:0,
from ../../../gcc-7.3.0/libgcc/../gcc/tsystem.h:93,
from ../../../gcc-7.3.0/libgcc/libgcov.h:42,
from ../../../gcc-7.3.0/libgcc/libgcov-interface.c:26:
/FaF/glibc/include/bits/errno.h:26:11: fatal error: linux/errno.h: No such file
or directory
# include <linux/errno.h>
^~~~~~~~~~~~~~~
In file included from /FaF/glibc/include/errno.h:28:0,
from ../../../gcc-7.3.0/libgcc/../gcc/tsystem.h:93,
from ../../../gcc-7.3.0/libgcc/libgcov.h:42,
from ../../../gcc-7.3.0/libgcc/libgcov-merge.c:26:
>From gcc-bugs-return-599837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 14:36:58 2018
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Subject: [Bug c++/85141] New: [6/7/8 Regression] ICE with pointer arithmetic of static member function address
Date: Sat, 31 Mar 2018 14:36:00 -0000
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Bug ID: 85141
Summary: [6/7/8 Regression] ICE with pointer arithmetic of
static member function address
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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The following valid code snippet (compiled with "-fpermissive")
triggers an ICE since GCC 4.7.0:
======================
struct A
{
static int foo();
};
void bar(int i)
{
i += A().foo;
}
======================
bug.cc: In function 'void bar(int)':
bug.cc:8:5: warning: pointer to a function used in arithmetic [-Wpointer-arith]
i += A().foo;
~~^~~~~~~~~~
bug.cc:8:12: warning: invalid conversion from 'int (*)()' to 'int'
[-fpermissive]
i += A().foo;
^~~
bug.cc:8:5: internal compiler error: tree check: expected field_decl, have
baselink in component_ref_field_offset, at tree.c:12950
i += A().foo;
~~^~~~~~~~~~
0x78c848 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9322
0x795d33 tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3135
0x795d33 component_ref_field_offset(tree_node*)
../../gcc/gcc/tree.c:12950
0xc6d027 gimplify_compound_lval
../../gcc/gcc/gimplify.c:2936
0xc65372 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11386
0xc74ff3 gimplify_modify_expr
../../gcc/gcc/gimplify.c:5625
0xc666f0 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11434
0xc735de gimplify_target_expr
../../gcc/gcc/gimplify.c:6576
0xc668ed gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11815
0xc697f6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6a179 gimplify_compound_expr
../../gcc/gcc/gimplify.c:5885
0xc6f74a gimplify_modify_expr_rhs
../../gcc/gcc/gimplify.c:5225
0xc74f3a gimplify_modify_expr_rhs
../../gcc/gcc/gimplify.c:5125
0xc74f3a gimplify_modify_expr
../../gcc/gcc/gimplify.c:5580
0xc666f0 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11434
0xc697f6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc67692 gimplify_cleanup_point_expr
../../gcc/gcc/gimplify.c:6399
0xc67692 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gcc/gimplify.c:11811
0xc697f6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gcc/gimplify.c:6658
0xc6b1ea gimplify_body(tree_node*, bool)
../../gcc/gcc/gimplify.c:12635
Please submit a full bug report, [etc.]
If I add the option "-fsanitize=undefined" I get a different stack trace:
bug.cc: In function 'void bar(int)':
bug.cc:8:5: warning: pointer to a function used in arithmetic [-Wpointer-arith]
i += A().foo;
~~^~~~~~~~~~
bug.cc:8:12: warning: invalid conversion from 'int (*)()' to 'int'
[-fpermissive]
i += A().foo;
^~~
bug.cc:8:1: internal compiler error: tree check: expected tree that contains
'decl common' structure, have 'baselink' in
cp_ubsan_maybe_instrument_member_access, at cp/cp-ubsan.c:154
}
^
0x78d0a7 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
../../gcc/gcc/tree.c:9494
0x5eee6d contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
../../gcc/gcc/tree.h:3249
0x5eee6d cp_ubsan_maybe_instrument_member_access
../../gcc/gcc/cp/cp-ubsan.c:154
0x5eee6d cp_ubsan_check_member_access_r
../../gcc/gcc/cp/cp-ubsan.c:213
0x116564b 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:11387
0x11659c6 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:11613
0x1165d6f 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:11703
0x8746c0 cp_ubsan_instrument_member_accesses(tree_node**)
../../gcc/gcc/cp/cp-ubsan.c:250
0x86f327 cp_genericize_tree
../../gcc/gcc/cp/cp-gimplify.c:1576
0x86f622 cp_genericize(tree_node*)
../../gcc/gcc/cp/cp-gimplify.c:1714
0x89e312 finish_function(bool)
../../gcc/gcc/cp/decl.c:15864
0x93bfa9 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26850
0x93cd26 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:26763
0x93cd26 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19511
0x943e28 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13059
0x944c38 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12884
0x948bc2 cp_parser_declaration
../../gcc/gcc/cp/parser.c:12782
0x948fd1 cp_parser_declaration_seq_opt
../../gcc/gcc/cp/parser.c:12658
0x9492c4 cp_parser_translation_unit
../../gcc/gcc/cp/parser.c:4563
0x9492c4 c_parse_file()
../../gcc/gcc/cp/parser.c:39024
Please submit a full bug report, [etc.]
>From gcc-bugs-return-599838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 14:54:50 2018
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84744] cannot use glibc 2.27 with gcc 7.3
Date: Sat, 31 Mar 2018 14:54:00 -0000
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--- Comment #11 from Andreas Schwab <schwab@linux-m68k.org> ---
The glibc headers depend on the kernel UAPI headers, they need to be available
in the sysroot.
>From gcc-bugs-return-599839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 15:28:56 2018
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From: "steffen at sdaoden dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 15:28:00 -0000
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--- Comment #5 from Steffen Nurpmeso <steffen at sdaoden dot eu> ---
Sorry for not providing a test case.
The C++ standard is clear here about this case too.
I have a PDF version of a 2014 draft, and i would not see that in case your
words are implying that gcc is right?
In 7.1.3, The typedef specifier, i read
Within the scope of its declaration, a typedef-name is syntactically
equivalent to a keyword...
So, in item 5,
In a given class scope, a typedef specifier can be used to redefine any
class-name declared in that scope that is not also a typedef-name to refer to
the type to which it already refers.
The example is
struct S {
typedef struct A { } A; // Ok
typedef struct B B; // Ok
typedef A A; // Ok
};
This does not apply since the yet existing AutoToolbox is from an outer scope,
and not a typedef by itself.
In item 7,
In a given scope, a typedef specifier shall not be used to redefine the name
of any type declared in that scope to refer to a different type.
Does not apply since we have different scopes.
Item 8
Similarly, in a given scope, a class or enumeration shall not be declared
with the same name as a typedef-name that is declared in that scope and refers
to a type other than the class or enumeration itself.
Does not apply thus.
But we have 9.2, Class members:
Nested types are classes (9.1, 9.7) and enumerations (7.2) defined in the
class, and arbitrary types declared as members by use of a typedef declaration
(7.1.3)
What do you say?
>From gcc-bugs-return-599840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 15:46:11 2018
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From: "david.abdurachmanov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/85142] New: Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
Date: Sat, 31 Mar 2018 15:46:00 -0000
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Bug ID: 85142
Summary: Wrong -print-multi-os-directory & -print-multi-lib
output for riscv64 + multilib
Product: gcc
Version: 7.3.1
Status: UNCONFIRMED
Severity: normal
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GCC 7.3.1 is available in Fedora RISC-V stage4 and is configured with multilib,
but only one ABI is selected. This is done to provide multilib paths, which are
required by glibc.
# gcc -print-multi-directory
.
# gcc -print-multi-lib
.;
lib64/lp64d;@march=rv64imafdc@mabi=lp64d
# gcc -print-multi-os-directory
.
Based on GCC man page -print-multi-os-directory should return ../lib64/lp64d
ppp packages uses: LIBDIR = $(DESTDIR)/lib/$(shell gcc
-print-multi-os-directory 2> /dev/null)
Thus wrongly installs libraries in /usr/lib directory, instead of in
/usr/lib/../lib64/lp64d.
I am also concerned by -print-multi-lib output.
Instead of:
lib64/lp64d;@march=rv64imafdc@mabi=lp64d
We should have:
../lib64/lp64d;@march=rv64imafdc@mabi=lp64d
All the paths seem to be related to "some lib directory" (/usr/lib) according
to man page.
>From gcc-bugs-return-599841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 16:06:15 2018
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Subject: [Bug tree-optimization/85143] New: Loop limit prevents (auto)vectorization
Date: Sat, 31 Mar 2018 16:06:00 -0000
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Bug ID: 85143
Summary: Loop limit prevents (auto)vectorization
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I expected that it generates a vectorized version potentially specializing to
the boundary. LLVM produces strange looking (vectorized) code so I guess it's a
but this time :)
Works fine if the hardcoded boundary is removed.
void boxIntersectionSimdNative(
bool*__restrict__ res,
double*__restrict__ a, double*__restrict__ b,
int n
) {
for( int i = 0; i < n && i < 1337; i++) {
res[i] = a[i] > b[i];
}
}
output
boxIntersectionSimdNative(bool*, double*, double*, int):
test ecx, ecx
jle .L34
mov eax, 1
jmp .L30
.L35:
cmp r8d, 1336
jg .L34
.L30:
vmovsd xmm0, QWORD PTR [rsi-8+rax*8]
mov r8d, eax
vcomisd xmm0, QWORD PTR [rdx-8+rax*8]
seta BYTE PTR [rdi-1+rax]
add rax, 1
cmp ecx, r8d
jg .L35
.L34:
rep ret
>From gcc-bugs-return-599842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 16:28:34 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85144] New: Wrong assignment with allocatable charlen
Date: Sat, 31 Mar 2018 16:28:00 -0000
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Bug ID: 85144
Summary: Wrong assignment with allocatable charlen
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From c.l.f.
The program
! Original test case by Manfred Tietze
program show_problem
implicit none
! derived type with an array of strings with variable length
type var_text
character(len=:), dimension(:), allocatable :: text
end type var_text
type(var_text) :: b
integer :: i
! test with an array of variable length strings
allocate(character(len=3) :: b%text(3))
b%text(1) = 'abc'
b%text(2) = '123'
print *,b%text(1)
print *,"x",b%text,"x"
yields, with current trunk
123
xx
>From gcc-bugs-return-599843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 16:44:40 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug driver/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
Date: Sat, 31 Mar 2018 16:44:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Sat, 31 Mar 2018, david.abdurachmanov at gmail dot com wrote:
> GCC 7.3.1 is available in Fedora RISC-V stage4 and is configured with multilib,
> but only one ABI is selected. This is done to provide multilib paths, which are
> required by glibc.
>
> # gcc -print-multi-directory
> .
> # gcc -print-multi-lib
> .;
> lib64/lp64d;@march=rv64imafdc@mabi=lp64d
If there is only one multilib, there should only be one line in the
-print-multi-lib output. So something seems wrong here (whether a mistake
in how the compiler was configured - you haven't provided the detailed
configure options and confirmed reproducing the issue with those options
with unmodified upstream GCC - or a bug in the RISC-V t-* files).
> # gcc -print-multi-os-directory
> .
>
> Based on GCC man page -print-multi-os-directory should return ../lib64/lp64d
Yes, if that's where libraries such as libstdc++ are installed by GCC.
> Instead of:
>
> lib64/lp64d;@march=rv64imafdc@mabi=lp64d
>
> We should have:
>
> ../lib64/lp64d;@march=rv64imafdc@mabi=lp64d
No, that's wrong. For a multilib-disabled compiler you should have ".;"
and nothing else in the -print-multi-lib output.
Directory names in -print-multi-lib / -print-multi-directory output are
the *non-OS* directory names, which are used to install libgcc (and crt*.o
etc.) copies in lib/gcc/$target/$version. They must never contain a ".."
component because that would mean the $version directory component getting
lost.
> All the paths seem to be related to "some lib directory" (/usr/lib) according
> to man page.
Only the -print-multi-os-directory names use *OS* conventions, meaning
relative to a directory called lib.
>From gcc-bugs-return-599844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 16:53:21 2018
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Subject: [Bug driver/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
Date: Sat, 31 Mar 2018 16:53:00 -0000
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--- Comment #2 from Richard W.M. Jones <rjones at redhat dot com> ---
The build log is here:
https://fedorapeople.org/groups/risc-v/logs/gcc-7.3.1-5.2.riscv64.fc28.src.rpm/build.log
Grep the log for "../configure" to see configure line(s).
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Subject: [Bug c++/65923] False positive for warning about literal operator suffix and using
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--- Comment #3 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Duplicate of #77999. I, also, just ran into this bug myself.
>From gcc-bugs-return-599846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:16:51 2018
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Subject: [Bug c++/84435] -Wliteral-suffix warns on a using-directive
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--- Comment #4 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Duplicate of #77999. I, also, just ran into this bug myself.
>From gcc-bugs-return-599847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:27:07 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/85132] ffmpeg runtime segfault with lto
Date: Sat, 31 Mar 2018 17:27:00 -0000
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--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
It was changed on trunk in:
commit 371072bf395be11f36ef31bb3cfec06bbfc58597
Author: law <law@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri Sep 1 16:26:00 2017 +0000
* varasm.c (bss_initializer_p): Do not put constants into .bss
(categorize_decl_for_section): Handle bss_initializer_p returning
false when DECL_INITIAL is NULL.
* gcc.target/i386/const-in-bss.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251602
138bc75d-0d04-0410-961f-82ee72b054a4
Note the using an undefined behavior gives optimizer opportunity to optimize to
any way. In this case GCC 7 generated working and GCC 8 not working code in
case of ffmpeg.
>From gcc-bugs-return-599848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:41:42 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 17:41:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See https://gcc.gnu.org/gcc-4.3/porting_to.html:
Name lookup changes
GCC by default no longer accepts code such as
template <class _Tp> class auto_ptr {};
template <class _Tp>
struct counted_ptr
{
auto_ptr<_Tp> auto_ptr();
};
but will issue the diagnostic
error: declaration of 'auto_ptr<_Tp> counted_ptr<_Tp>::auto_ptr()'
error: changes meaning of 'auto_ptr' from 'class auto_ptr<_Tp>'
The reference to struct auto_ptr needs to be qualified here, or the name of the
member function changed to be unambiguous.
template <class _Tp> class auto_ptr {};
template <class _Tp>
struct counted_ptr
{
::auto_ptr<_Tp> auto_ptr();
};
In addition, -fpermissive can be used as a temporary workaround to convert the
error into a warning until the code is fixed. Note that then in some case name
lookup will not be standard conforming.
--- CUT ----
*** This bug has been marked as a duplicate of bug 38764 ***
>From gcc-bugs-return-599849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:41:43 2018
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Subject: [Bug c++/38764] bogus 'changes meaning' error?
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 85128 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:42:53 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 17:42:00 -0000
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Same as bug 34531.
*** This bug has been marked as a duplicate of bug 34531 ***
>From gcc-bugs-return-599853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:42:54 2018
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Subject: [Bug c++/34531] local typedef conflicts with global definition of a type having the same name
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CC| |steffen at sdaoden dot eu
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 85128 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:42:35 2018
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Subject: [Bug c++/34531] local typedef conflicts with global definition of a type having the same name
Date: Sat, 31 Mar 2018 17:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34531
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pawel_sikora at zoho dot com
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 38764 has been marked as a duplicate of this bug. ***
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Subject: [Bug c++/38764] bogus 'changes meaning' error?
Date: Sat, 31 Mar 2018 17:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38764
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Resolution|INVALID |DUPLICATE
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 34531.
*** This bug has been marked as a duplicate of bug 34531 ***
>From gcc-bugs-return-599854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:49:07 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 17:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85128
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is invalid code due to [basic.scope.class].
>From gcc-bugs-return-599855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:50:28 2018
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
Date: Sat, 31 Mar 2018 17:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85128
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mainly this paragraph:
A name N used in a class S shall refer to the same declaration in its context
and when re-evaluated in the completed scope of S. ____No diagnostic is
required for a violation of this rule.____
Add __ to highlight that the C++ standard does not require a diagnostic for a
violation.
>From gcc-bugs-return-599856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 17:57:09 2018
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Subject: [Bug tree-optimization/85143] Loop limit prevents (auto)vectorization
Date: Sat, 31 Mar 2018 17:57:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
i < n && i < 1337
Most likely should be converted over to i < MIN_EXPR(n, 1337). And then the
MIN_EXPR can be pulled out of the loop and the optimizations can take care of
the rest I think.
>From gcc-bugs-return-599857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 18:05:02 2018
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From: "jeroen at berkeley dot edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85145] New: GCC 8 regression: include_next broken icw/ --with-gxx-include-dir
Date: Sat, 31 Mar 2018 18:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85145
Bug ID: 85145
Summary: GCC 8 regression: include_next broken icw/
--with-gxx-include-dir
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
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Target Milestone: ---
See downstream issue here: https://github.com/niXman/mingw-builds/issues/452
This is GCC 8.0.1 20180330. g++ gives errors like:
C:/gcc8/mingw32/i686-w64-mingw32/include/c++/cstdlib:75:15: fatal error:
stdlib.h: No such file or directory
#include_next <stdlib.h>
And
C:/gcc8/mingw32/i686-w64-mingw32/include/c++/cmath:45:15: fatal error: math.h:
No such file or directory
#include_next <math.h>
The problem went away when I did a rebuild of mingw-w64 without
--with-gxx-include-dir.
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Subject: [Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
Date: Sat, 31 Mar 2018 18:54:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
+ /usr/bin/patch --no-backup-if-mismatch -p1 -b --suffix .riscv64_multilib
--fuzz=0
patching file gcc/config/riscv/t-linux-multilib
+ cd nvptx-tools-c28050f60193b3b95a18866a96f03334e874e78f
This is not the right place to ask this kind of questions as the sources you
are building are modified specifically for multilib and there is no way to
figure out if there is a bug in your patch or in the generic gcc.
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Subject: [Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
>From gcc-bugs-return-599860-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 19:19:44 2018
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Subject: [Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
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--- Comment #5 from Richard W.M. Jones <rjones at redhat dot com> ---
I'm not the original reporter but you could give us a few *minutes*
at least to resolve these questions by just asking.
The patch in question is this one. (I didn't write it, it was written
by David the reporter.)
ff --git a/gcc/config/riscv/t-linux-multilib
b/gcc/config/riscv/t-linux-multilib
index 298547f..5f08626 100644
--- a/gcc/config/riscv/t-linux-multilib
+++ b/gcc/config/riscv/t-linux-multilib
@@ -20,27 +20,4 @@ rv64gc ilp32 \
ilp32d \
lp64 \
lp64d
-MULTILIB_REQUIRED = march=rv32imac/mabi=ilp32 \
-march=rv32imafdc/mabi=ilp32d \
-march=rv64imac/mabi=lp64 \
-march=rv64imafdc/mabi=lp64d
-MULTILIB_REUSE = march.rv32imac/mabi.ilp32=march.rv32ima/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32imaf/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32imafd/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32imafc/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32imafdc/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32g/mabi.ilp32 \
-march.rv32imac/mabi.ilp32=march.rv32gc/mabi.ilp32 \
-march.rv32imafdc/mabi.ilp32d=march.rv32imafd/mabi.ilp32d \
-march.rv32imafdc/mabi.ilp32d=march.rv32gc/mabi.ilp32d \
-march.rv32imafdc/mabi.ilp32d=march.rv32g/mabi.ilp32d \
-march.rv64imac/mabi.lp64=march.rv64ima/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64imaf/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64imafd/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64imafc/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64imafdc/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64g/mabi.lp64 \
-march.rv64imac/mabi.lp64=march.rv64gc/mabi.lp64 \
-march.rv64imafdc/mabi.lp64d=march.rv64imafd/mabi.lp64d \
-march.rv64imafdc/mabi.lp64d=march.rv64gc/mabi.lp64d \
-march.rv64imafdc/mabi.lp64d=march.rv64g/mabi.lp64d
+MULTILIB_REQUIRED = march=rv64imafdc/mabi=lp64d
>From gcc-bugs-return-599862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 19:21:43 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++/85146] New: ICE with __direct_bases for declared but not defined struct
Date: Sat, 31 Mar 2018 19:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85146
Bug ID: 85146
Summary: ICE with __direct_bases for declared but not defined
struct
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
CC: paolo.carlini at oracle dot com
Target Milestone: ---
The following valid code snippet triggers an ICE since GCC 4.7.0
(when __direct_bases was introduced):
=====================================
template<typename...> struct A {};
template<typename T> struct B
{
typedef A<__direct_bases(T)...> C;
};
struct X;
B<X> b;
=====================================
bug.cc: In instantiation of 'struct B<X>':
bug.cc:10:6: required from here
bug.cc:5:35: internal compiler error: Segmentation fault
typedef A<__direct_bases(T)...> C;
^
0xd0137f crash_signal
../../gcc-5.1.0/gcc/toplev.c:383
0x7d6e1d tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc-5.1.0/gcc/tree.h:2845
0x7d6e1d calculate_direct_bases(tree_node*)
../../gcc-5.1.0/gcc/cp/semantics.c:3745
0x6a7511 tsubst_pack_expansion
../../gcc-5.1.0/gcc/cp/pt.c:9973
0x6a8dba tsubst_template_args
../../gcc-5.1.0/gcc/cp/pt.c:10221
0x6a8b93 tsubst_template_args
../../gcc-5.1.0/gcc/cp/pt.c:10239
0x6bf2a0 tsubst_aggr_type
../../gcc-5.1.0/gcc/cp/pt.c:10454
0x6ab22a tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc-5.1.0/gcc/cp/pt.c:11909
0x6c0886 tsubst_decl
../../gcc-5.1.0/gcc/cp/pt.c:11339
0x6ab786 tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc-5.1.0/gcc/cp/pt.c:11830
0x6e0381 instantiate_class_template_1
../../gcc-5.1.0/gcc/cp/pt.c:9424
0x6e0381 instantiate_class_template(tree_node*)
../../gcc-5.1.0/gcc/cp/pt.c:9688
0x77ac6b complete_type(tree_node*)
../../gcc-5.1.0/gcc/cp/typeck.c:146
0x657587 start_decl_1(tree_node*, bool)
../../gcc-5.1.0/gcc/cp/decl.c:4900
0x678887 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc-5.1.0/gcc/cp/decl.c:4863
0x76cfed cp_parser_init_declarator
../../gcc-5.1.0/gcc/cp/parser.c:17170
0x76f915 cp_parser_simple_declaration
../../gcc-5.1.0/gcc/cp/parser.c:11607
0x7693a3 cp_parser_block_declaration
../../gcc-5.1.0/gcc/cp/parser.c:11481
0x773249 cp_parser_declaration
../../gcc-5.1.0/gcc/cp/parser.c:11378
0x7718da cp_parser_declaration_seq_opt
../../gcc-5.1.0/gcc/cp/parser.c:11264
Please submit a full bug report, [etc.]
This is related to PR60218 where the same issue was solved
for __bases instead of __direct_bases. Paolo, you
fixed PR60218 for GCC 6. Would you mind having a look?
>From gcc-bugs-return-599861-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 19:21:31 2018
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Subject: [Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib
Date: Sat, 31 Mar 2018 19:21:00 -0000
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--- Comment #6 from Richard W.M. Jones <rjones at redhat dot com> ---
The paste removed the "di" from "diff" but the patch is otherwise
as posted.
>From gcc-bugs-return-599863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 20:18:37 2018
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Subject: [Bug fortran/85144] Wrong assignment with allocatable charlen
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85144
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-31
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 5.5.0 up to trunk (8.0). Compiled with 4.9 '123' is not printed,
and Deferred-length character is not implemented in 4.8.
I am pretty sure this is duplicate.
>From gcc-bugs-return-599864-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 20:30:58 2018
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Subject: [Bug tree-optimization/85143] Loop limit prevents (auto)vectorization
Date: Sat, 31 Mar 2018 20:30:00 -0000
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--- Comment #2 from robertw89 at googlemail dot com ---
This change would be trivial.
To defend my case and rant a bit ;) ...
Indeed, but programmers can manually unroll a loop too ;) . What if the code is
autogenerated? What if the constant comes from a devirtualized call, etc. It
could do this optimization.
>From gcc-bugs-return-599865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 20:50:06 2018
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Subject: [Bug c++/85147] New: [6/7/8 Regression] ICE with invalid variadic template-template parameter
Date: Sat, 31 Mar 2018 20:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85147
Bug ID: 85147
Summary: [6/7/8 Regression] ICE with invalid variadic
template-template parameter
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
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Target Milestone: ---
The following invalid code snippet triggers an ICE since GCC 6.1.0:
====================================================
template<typename T> struct A
{
template<template<...T> class...> struct B {};
};
A<int>::B<> b;
====================================================
bug.cc:3:21: error: expected identifier before '...' token
template<template<...T> class...> struct B {};
^~~
bug.cc: In instantiation of 'struct A<int>':
bug.cc:6:7: required from here
bug.cc:3:44: internal compiler error: in fixed_parameter_pack_p_1, at
cp/pt.c:5113
template<template<...T> class...> struct B {};
^
0x630249 fixed_parameter_pack_p_1
../../gcc/gcc/cp/pt.c:5113
0x94c1f9 fixed_parameter_pack_p_1
../../gcc/gcc/cp/pt.c:5117
0x95edc4 fixed_parameter_pack_p(tree_node*)
../../gcc/gcc/cp/pt.c:5144
0x9824ef coerce_template_parameter_pack
../../gcc/gcc/cp/pt.c:8067
0x9824ef coerce_template_parms
../../gcc/gcc/cp/pt.c:8377
0x986308 coerce_innermost_template_parms
../../gcc/gcc/cp/pt.c:8587
0x97b9b6 lookup_template_class_1
../../gcc/gcc/cp/pt.c:9032
0x97b9b6 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:9381
0x97d48a tsubst_aggr_type
../../gcc/gcc/cp/pt.c:12315
0x977a2e tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc/gcc/cp/pt.c:13944
0x9815ad tsubst_template_decl
../../gcc/gcc/cp/pt.c:12849
0x97daef tsubst_decl
../../gcc/gcc/cp/pt.c:12970
0x977b2f tsubst(tree_node*, tree_node*, int, tree_node*)
../../gcc/gcc/cp/pt.c:13862
0x990c3a instantiate_class_template_1
../../gcc/gcc/cp/pt.c:10851
0x990c3a instantiate_class_template(tree_node*)
../../gcc/gcc/cp/pt.c:11100
0x9d7b4d complete_type(tree_node*)
../../gcc/gcc/cp/typeck.c:136
0x9355aa cp_parser_nested_name_specifier_opt
../../gcc/gcc/cp/parser.c:6447
0x93e463 cp_parser_constructor_declarator_p
../../gcc/gcc/cp/parser.c:26539
0x93e463 cp_parser_decl_specifier_seq
../../gcc/gcc/cp/parser.c:13616
0x943c90 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12937
Please submit a full bug report, [etc.]
>From gcc-bugs-return-599866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 21:01:37 2018
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From: "steffen at sdaoden dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/34531] local typedef conflicts with global definition of a type having the same name
Date: Sat, 31 Mar 2018 21:01:00 -0000
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--- Comment #7 from Steffen Nurpmeso <steffen at sdaoden dot eu> ---
Hello Andrew Pinski!
Ok i have to apologize for not searching in Bugzilla very carefully it seems.
I see now, indeed i was -- even if that sounds inconceivable -- under the
impression that the error message
typedef class SF::Sys::Coll::AutoToolbox<T>
SF::Sys::Coll::TypeTraits<T>::AutoToolbox
reflected the code, but that is, again indeed, not true, so gcc is right!
template<class T, boolean OWNS=TypeTraits<T>::ownguess>
class CPDict
pub typedef typename TTraits::AutoToolbox TAutoToolbox;
template<class T>
class TypeTraits
pub typedef AutoToolbox<Type> AutoToolbox;
(but but but: mysteriously fully references the non-auto Toolbox!)
Sorry for the noise!
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Subject: [Bug c++/85128] Local scope type(def) falsely assumed to change meaning of outer scope type(def)
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--- Comment #10 from Steffen Nurpmeso <steffen at sdaoden dot eu> ---
Hello Andrew Pinski!
Ok i have to apologize for not searching in Bugzilla very carefully it seems.
I see now, indeed i was -- even if that sounds inconceivable -- under the
impression that the error message
typedef class SF::Sys::Coll::AutoToolbox<T>
SF::Sys::Coll::TypeTraits<T>::AutoToolbox
reflected the code, but that is, again indeed, not true, so gcc is right!
template<class T, boolean OWNS=TypeTraits<T>::ownguess>
class CPDict
pub typedef typename TTraits::AutoToolbox TAutoToolbox;
template<class T>
class TypeTraits
pub typedef AutoToolbox<Type> AutoToolbox;
(but but but: mysteriously fully references the non-auto Toolbox!)
Sorry for the noise!
>From gcc-bugs-return-599868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 21:17:07 2018
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Subject: [Bug tree-optimization/85143] Loop limit prevents (auto)vectorization
Date: Sat, 31 Mar 2018 21:17:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to robertw89 from comment #2)
> This change would be trivial.
I did not mean for you to change your code. I meant gcc could do this
transformation.
>From gcc-bugs-return-599869-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 21:51:01 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++/85148] New: [6/7/8 Regression] ICE with NSDMI and this pointer
Date: Sat, 31 Mar 2018 21:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85148
Bug ID: 85148
Summary: [6/7/8 Regression] ICE with NSDMI and this pointer
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
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The following valid code snippet triggers an ICE since GCC 5.1.0
(it was wrongly rejected in GCC 4.9.4):
=====================================
template<typename T> struct A
{
T x[1]{(__PTRDIFF_TYPE__)this};
};
void foo()
{
A<A<__PTRDIFF_TYPE__>> a{};
}
=====================================
bug.cc: In function 'void foo()':
bug.cc:8:28: internal compiler error: in replace_placeholders_r, at
cp/tree.c:3148
A<A<__PTRDIFF_TYPE__>> a{};
^
0x667871 replace_placeholders_r
../../gcc/gcc/cp/tree.c:3148
0x116564b 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:11387
0x9d03b0 replace_placeholders_r
../../gcc/gcc/cp/tree.c:3188
0x116564b 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:11387
0x9d03b0 replace_placeholders_r
../../gcc/gcc/cp/tree.c:3188
0x116564b 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:11387
0x9d03b0 replace_placeholders_r
../../gcc/gcc/cp/tree.c:3188
0x116564b 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:11387
0x9d03b0 replace_placeholders_r
../../gcc/gcc/cp/tree.c:3188
0x116564b 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:11387
0x9d51d1 replace_placeholders(tree_node*, tree_node*, bool*)
../../gcc/gcc/cp/tree.c:3226
0x9f4bb3 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc/gcc/cp/typeck2.c:851
0x887daa check_initializer
../../gcc/gcc/cp/decl.c:6469
0x89ffdc cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:7127
0x93c97b cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19741
0x943e28 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:13059
0x944c38 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12884
0x945669 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:12478
0x923a73 cp_parser_statement
../../gcc/gcc/cp/parser.c:10927
0x9249e0 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11276
Please submit a full bug report, [etc.]
>From gcc-bugs-return-599870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 21:54:03 2018
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From: "barry.revzin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85149] New: False branch of if constexpr instantiated in generic lambda
Date: Sat, 31 Mar 2018 21:54:00 -0000
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Bug ID: 85149
Summary: False branch of if constexpr instantiated in generic
lambda
Product: gcc
Version: 8.0
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On latest trunk (8.0.1), the following compiles. But with -DBUG it doesn't:
template <typename T> struct is_void { static constexpr bool value = false; };
template <> struct is_void<void> { static constexpr bool value = true; };
template<typename S, typename T>
constexpr decltype(auto) pipeline(S source, T target)
{
return [=](auto... args)
{
if constexpr(false
#ifdef BUG
&& is_void<decltype(source(args...))>::value
#endif
)
{
source(args...);
return target();
} else {
return target(source(args...));
}
};
}
int main() {
pipeline([]{ return 10; },
[](int val){ return val * 10; });
}
With -DBUG, the error is:
prog.cc: In instantiation of 'constexpr decltype(auto) pipeline(S, T) [with S =
main()::<lambda()>; T = main()::<lambda(int)>]':
prog.cc:25:45: required from here
prog.cc:16:26: error: no match for call to '(const main()::<lambda(int)>) ()'
return target();
~~~~~~^~
prog.cc:16:26: note: candidate: 'int (*)(int)' <conversion>
prog.cc:16:26: note: candidate expects 2 arguments, 1 provided
prog.cc:25:24: note: candidate: 'main()::<lambda(int)>'
[](int val){ return val * 10; });
^
prog.cc:25:24: note: candidate expects 1 argument, 0 provided
-----------------
Wrapping source and target into an aggregate instead gets you an ICE on gcc 7.3
(https://godbolt.org/g/WvzuCs):
template <typename T> struct is_void { static constexpr bool value = false; };
template <> struct is_void<void> { static constexpr bool value = true; };
template <typename S, typename T>
struct pair {
S first;
T second;
};
template <typename S, typename T> pair(S, T) -> pair<S,T>;
template<typename S, typename T>
constexpr decltype(auto) pipeline(S&& source, T&& target)
{
return [callables = pair{source, target}](auto... args)
{
auto& [source, target] = callables;
using source_return = decltype(source(args...));
if constexpr(false && is_void<source_return>::value)
{
source(args...);
return target();
}
};
}
void foo()
{
auto s = []{ return 42; };
auto t = [](int){};
auto p = pipeline(s, t);
p();
}
>From gcc-bugs-return-599871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 21:57:43 2018
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From: "weeks at iastate dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85150] New: internal compiler error for module with illegal non-constant pointer initialization designator
Date: Sat, 31 Mar 2018 21:57:00 -0000
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Bug ID: 85150
Summary: internal compiler error for module with illegal
non-constant pointer initialization designator
Product: gcc
Version: 7.3.0
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The following module code results in an internal compiler error with gfortran
7.3.0:
==================================================================
$ cat mod_test.f90
module mod_test
implicit none
integer, target :: buf(2)
integer :: buf_i = 1
integer, pointer :: buf_ptr => buf(buf_i) ! invalid
end module mod_test
$ gfortran-mp-7 mod_test.f90
f951: internal compiler error: in gen_reg_rtx, at emit-rtl.c:1058
f951: internal compiler error: Abort trap: 6
gfortran-mp-7: internal compiler error: Abort trap: 6 (program f951)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://trac.macports.org/newticket> for instructions.
$ gfortran-mp-7 --version
GNU Fortran (MacPorts gcc7 7.3.0_0) 7.3.0
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.
==================================================================
This code is apparently invalid, but a helpful error message would be
preferable to an internal compiler error. Compile-time errors from the Intel
Fortran 18.0.1 and Cray Fortran 8.6.2 seem to indicate that the preceding code
violates the following paragraph in the Fortran 2008 standard:
C461 (R443) The designator shall designate a nonallocatable variable that has
the TARGET and SAVE attri-
butes and does not have a vector subscript. Every subscript,
section subscript, substring starting point,
and substring ending point in designator shall be a constant
expression.
>From gcc-bugs-return-599872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 22:45:57 2018
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From: "will at dash dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/71504] bogus error: accessing value through a glvalue in a constant expression
Date: Sat, 31 Mar 2018 22:45:00 -0000
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Will <will at dash dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |will at dash dot org
--- Comment #4 from Will <will at dash dot org> ---
A motivating example for this error to be given higher priority.
An array_ref wrapper for multidimensional C-arrays T[M][N]...
providing constexpr access via an index operator[]
-> returns array_ref<T> when T is an array type or
-> returns T& otherwise for non-array T
https://wandbox.org/permlink/vcAokwqzk5tOF1ok
#include <type_traits>
template <typename T> struct array_ref;
template <typename T> using ref_t = std::conditional_t<
std::is_array_v<T>, array_ref<T>, T&>;
template <typename T, unsigned N> struct array_ref<T[N]>
{
T* a; // T (&a)[N];
using const_reference = const ref_t<T>;
constexpr const_reference operator[](unsigned I) const { return {a[I]}; }
};
template <typename A> array_ref(A&) -> array_ref<A>;
constexpr int a2[2] = {1,2};
static_assert( array_ref{a2}[0] == 1 );
constexpr int a22[2][2] = {{1,2},{3,4}};
static_assert( array_ref{a22}[0][0] == 1 );
> error: non-constant condition for static assertion
static_assert( array_ref{a22}[0][0] == 1 );
> error: accessing value of 'a22' through a 'const int' glvalue in a constant expression
Clang accepts. (MSVC untested.)
A workaround is to replace the pointer member with a reference member
(a reference member is less flexible and generally discouraged).
So GCC with this bug forces the less flexible implementation afaict -
I couldn't find a workaround that uses a pointer member.
Like std::array, array_ref is intended to provide array copy.
This is why >1D index operations return wrapped array_ref<T>
(the wandbox link includes some static_asserts to illustrate).
Constexpr is a requirement for my application;
a reasonable requirement for a wrapped C-array.
Other multi-dimensional array implementations must've hit this
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From: "will at dash dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/84031] structured binding unpacks nameless padding bitfields
Date: Sat, 31 Mar 2018 22:51:00 -0000
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--- Comment #5 from Will <will at dash dot org> ---
Oops - left the wandbox link on Clang...
Here's the GCC Head link:
https://wandbox.org/permlink/rfvn9VSwZgU6nerN
>From gcc-bugs-return-599874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 31 22:53:06 2018
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From: "will at dash dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84031] structured binding unpacks nameless padding bitfields
Date: Sat, 31 Mar 2018 22:53:00 -0000
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--- Comment #6 from Will <will at dash dot org> ---
Oops oops - posted on wrong place, can't see how to delete. Ignore.
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Subject: [Bug c++/71504] bogus error: accessing value through a glvalue in a constant expression
Date: Sat, 31 Mar 2018 22:55:00 -0000
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--- Comment #5 from Will <will at dash dot org> ---
Oops -
I left the wandbox link on Clang...
Here's the GCC Head link:
https://wandbox.org/permlink/rfvn9VSwZgU6nerN
>From gcc-bugs-return-599876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 02:42:08 2018
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Subject: [Bug fortran/85138] [8 regression] ICE with generic function
Date: Sun, 01 Apr 2018 02:42:00 -0000
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--- Comment #4 from Andrew Benson <abensonca at gmail dot com> ---
A related but possibly different ICE:
module fox_m_fsys_format
interface len
module procedure str_real_dp_len, str_real_dp_fmt_len
end interface
contains
pure function str_real_dp_fmt_len(x, fmt) result(n)
real, intent(in) :: x
character(len=*), intent(in) :: fmt
if (.not.checkFmt(fmt)) then
endif
end function str_real_dp_fmt_len
pure function str_real_dp_len(x) result(n)
real, intent(in) :: x
end function str_real_dp_len
pure function str_real_dp_array_len(xa) result(n)
real, dimension(:), intent(in) :: xa
end function str_real_dp_array_len
pure function str_real_dp_array_fmt_len(xa, fmt) result(n)
real, dimension(:), intent(in) :: xa
character(len=*), intent(in) :: fmt
end function str_real_dp_array_fmt_len
pure function str_real_dp_fmt(x, fmt) result(s)
real, intent(in) :: x
character(len=*), intent(in) :: fmt
character(len=len(x, fmt)) :: s
end function str_real_dp_fmt
pure function checkFmt(fmt) result(good)
character(len=*), intent(in) :: fmt
logical :: good
end function checkFmt
end module fox_m_fsys_format
$ gfortran -c tmp6.F90
if (.not.checkFmt(fmt)) then
internal compiler error: Segmentation fault
0xd2f4cf crash_signal
../../gcc-trunk/gcc/toplev.c:325
0x7f434bb321ef ???
/data001/abenson/Galacticus/Tools/glibc-2.12.1/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x881660 gfc_conv_procedure_call(gfc_se*, gfc_symbol*, gfc_actual_arglist*,
gfc_expr*, vec<tree_node*, va_gc,
vl_embed>*)
../../gcc-trunk/gcc/fortran/trans-expr.c:4890
0x886eaa gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7922
0x889cc7 gfc_conv_expr_val(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7975
0x889d61 gfc_conv_unary_op
../../gcc-trunk/gcc/fortran/trans-expr.c:2799
0x887060 gfc_conv_expr_op
../../gcc-trunk/gcc/fortran/trans-expr.c:3317
0x887060 gfc_conv_expr(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7918
0x889cc7 gfc_conv_expr_val(gfc_se*, gfc_expr*)
../../gcc-trunk/gcc/fortran/trans-expr.c:7975
0x8c00d7 gfc_trans_if_1
../../gcc-trunk/gcc/fortran/trans-stmt.c:1427
0x8c8dba gfc_trans_if(gfc_code*)
../../gcc-trunk/gcc/fortran/trans-stmt.c:1464
0x84ca37 trans_code
../../gcc-trunk/gcc/fortran/trans.c:1916
0x878a2d gfc_generate_function_code(gfc_namespace*)
../../gcc-trunk/gcc/fortran/trans-decl.c:6507
0x850cc1 gfc_generate_module_code(gfc_namespace*)
../../gcc-trunk/gcc/fortran/trans.c:2222
0x80333b translate_all_program_units
../../gcc-trunk/gcc/fortran/parse.c:6108
0x80333b gfc_parse_file()
../../gcc-trunk/gcc/fortran/parse.c:6324
0x849b8f gfc_be_parse_file
../../gcc-trunk/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.
>From gcc-bugs-return-599877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 02:46:18 2018
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Subject: [Bug target/85151] New: VAX ICE with -O2
Date: Sun, 01 Apr 2018 02:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85151
Bug ID: 85151
Summary: VAX ICE with -O2
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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Created attachment 43807
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43807&action=edit
Test case.
ICE with -O2, no ICE with -O0.
~/gcc/build/gcc$ PATH=.:$PATH ./xgcc -x c ~/small.c -c -O2
during RTL pass: final
/home/fly/small.c: In function 'fn1':
/home/fly/small.c:7:1: internal compiler error: in change_address_1, at
emit-rtl.c:2286
}
^
0x7d86ed change_address_1
../../gcc/emit-rtl.c:2286
0x7dc9d5 adjust_address_1(rtx_def*, machine_mode, poly_int<1u, long>, int, int,
int, poly_int<1u, long>)
../../gcc/emit-rtl.c:2420
0x101b783 output_101
../../gcc/config/vax/vax.md:824
0x82ac0a final_scan_insn_1
../../gcc/final.c:3105
0x82c79b final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
../../gcc/final.c:3218
0x82c935 final_1
../../gcc/final.c:2088
0x82d984 rest_of_handle_final
../../gcc/final.c:4671
0x82d984 execute
../../gcc/final.c:4745
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>From gcc-bugs-return-599878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 02:49:39 2018
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Subject: [Bug target/85152] New: VAX ICE with -O2
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85152
Bug ID: 85152
Summary: VAX ICE with -O2
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: coypu at sdf dot org
Target Milestone: ---
Created attachment 43808
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43808&action=edit
Test case.
ICE with -O2, no ICE with -O0.
~/gcc/build/gcc$ PATH=.:$PATH ./xgcc -x c small.c -c -O2
during RTL pass: final
small.c: In function 'fn1':
small.c:7:1: internal compiler error: in change_address_1, at emit-rtl.c:2286
}
^
0x7d86ed change_address_1
../../gcc/emit-rtl.c:2286
0x7dc9d5 adjust_address_1(rtx_def*, machine_mode, poly_int<1u, long>, int, int,
int, poly_int<1u, long>)
../../gcc/emit-rtl.c:2420
0x101b783 output_101
../../gcc/config/vax/vax.md:824
0x82ac0a final_scan_insn_1
../../gcc/final.c:3105
0x82c79b final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*)
../../gcc/final.c:3218
0x82c935 final_1
../../gcc/final.c:2088
0x82d984 rest_of_handle_final
../../gcc/final.c:4671
0x82d984 execute
../../gcc/final.c:4745
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-599879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 02:54:11 2018
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Subject: [Bug tree-optimization/85143] Loop limit prevents (auto)vectorization
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-04-01
Ever confirmed|0 |1
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
Internal details to GCC:
Note on aarch64 (and maybe other targets too), when we do the expansion of
m_2 = MIN_EXPR <n_1(D), 1337>;
_4 = m_2 > i_3(D);
We want to convert it back to just:
_1 = i_3(D) < n_4(D);
_2 = i_3(D) <= 1336;
_5 = _1 & _2;
But that is only if we can't pull the MIN_EXPR out of the loop.
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Subject: [Bug middle-end/85139] [8 Regression] Spurious format truncation warning
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Component|c |middle-end
Target Milestone|--- |8.0
Summary|Spurious format truncation |[8 Regression] Spurious
|warning |format truncation warning
>From gcc-bugs-return-599882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 11:57:59 2018
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Subject: [Bug fortran/72709] Incorrect assignment of allocatable character array used as component of derived type
Date: Sun, 01 Apr 2018 11:57:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
*** Bug 85144 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Sun, 01 Apr 2018 11:57:00 -0000
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Bug 68241 depends on bug 85144, which changed state.
Bug 85144 Summary: Wrong assignment with allocatable charlen
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85144
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 11:57:57 2018
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Subject: [Bug fortran/85144] Wrong assignment with allocatable charlen
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Correct, this is a dup.
A pretty bad bug, though...
*** This bug has been marked as a duplicate of bug 72709 ***
>From gcc-bugs-return-599884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 12:52:25 2018
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Subject: [Bug fortran/72709] Incorrect assignment of allocatable character array used as component of derived type
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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CC| |pault at gcc dot gnu.org
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Hi Paul,
I've only recently stumbled across this bug. Just in case you
haven't seen this one yet...
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/85150] internal compiler error for module with illegal non-constant pointer initialization designator
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2018-04-01
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I get the ICE with 4.8 up to trunk (8.0). Compiling the test with 4.3.6 gives
the error
integer, pointer :: buf_ptr => buf(buf_i) ! invalid
1
Error: Pointer initialization requires a NULL() at (1)
>From gcc-bugs-return-599886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 14:04:43 2018
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Subject: [Bug fortran/85102] ICE in gfc_conv_intrinsic_dot_product, at fortran/trans-intrinsic.c:4464
Date: Sun, 01 Apr 2018 14:04:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-04/msg00004.html
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/85150] internal compiler error for module with illegal non-constant pointer initialization designator
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kargl at gcc dot gnu.org changed:
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--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #1)
> I get the ICE with 4.8 up to trunk (8.0). Compiling the test with 4.3.6
> gives the error
>
> integer, pointer :: buf_ptr => buf(buf_i) ! invalid
> 1
> Error: Pointer initialization requires a NULL() at (1)
4.3.6 did not support pointer initialization to anything
other than a null-init as 4.3.6 did not support Fortran
2008. With Fortran 2008, it is legal to do
integer, target :: m
integer, pointer :: n => m
I haven't looked too closely at Nathan's code, but it
may be invalid as buf_i is not a constant expression.
That is,
module mod_test
implicit none
integer, target :: buf(2)
integer :: buf_i = 1
The above is not a named constant,
integer, pointer :: buf_ptr => buf(buf_i) ! invalid
so it may not be valid Fortran to reference it here in
a specification statement.
end module mod_test
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Subject: [Bug target/85151] VAX ICE with -O2
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coypu <coypu at sdf dot org> changed:
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--- Comment #1 from coypu <coypu at sdf dot org> ---
Made a double bug report by mistake.
*** This bug has been marked as a duplicate of bug 85152 ***
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85152
--- Comment #1 from coypu <coypu at sdf dot org> ---
*** Bug 85151 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-599890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 15:35:26 2018
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From: "falemagn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/85153] New: _Pragma to disable -Wswitch-unreachable diagnostic not properly working when used within preprocessor macro
Date: Sun, 01 Apr 2018 15:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85153
Bug ID: 85153
Summary: _Pragma to disable -Wswitch-unreachable diagnostic not
properly working when used within preprocessor macro
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: falemagn at gmail dot com
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Created attachment 43809
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43809&action=edit
The preprocessed source, which works as expected
The preprocessed output (attached) behaves as expected, so I assume this
problem has to do with the driver and/or a strange interaction between driver,
preprocessor and compiler. For lack of better knowledge, I've filed this bug
under the "driver" component.
The whole code is on godbolt: https://godbolt.org/g/rTc3AU
Given the following code, g++ properly emits a warning.
int x;
int test1(int val) {
switch (val) {
if (!x) {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test1(int)’:
pragmatest.cpp:5:25: warning: statement will never be executed
[-Wswitch-unreachable]
if (!x) {
^~
If I then try to silence this warning with the proper _Pragma directive, in
clear, like in the following code, it works as expected as in the compiler
doesn't complain any longer:
int test2(int val) {
switch (val) {
_Pragma("GCC diagnostic push")
_Pragma("GCC diagnostic ignored \"-Wswitch-unreachable\"")
if (!x) {
_Pragma("GCC diagnostic pop")
case 1: return 10;
}
}
return 0;
}
If I then try to to hide the pragmas within 2 macros, like in the following
code, it still works:
#define B _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored
\"-Wswitch-unreachable\"")
#define E _Pragma("GCC diagnostic pop")
int test3(int val) {
switch (val) {
B if (!x) E {
case 1: return 10;
}
}
return 0;
}
However, if now I want to turn the whole "B if (!x) E" statement into a define
of its own, like in the following code, it doesn't work any longer.
#define X() B if (!x) E
int test4(int val) {
switch (val) {
X() {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test4(int)’:
pragmatest.cpp:39:23: warning: statement will never be executed
[-Wswitch-unreachable]
#define X() B if (!x) E
^~
pragmatest.cpp:43:21: note: in expansion of macro ‘X’
X() {
^
This looked quite odd, and at first thought I couldn't figure out what was
going on, but then I thought of using a layer of indirection around the pragma
macros, thinking it might have something to do with secondary expansion, so I
tried the following code, but still no luck.
#define Y(x) x
#define X2() Y(B) if (!x) Y(E)
int test5(int val) {
switch (val) {
X2() {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test5(int)’:
pragmatest.cpp:52:27: warning: statement will never be executed
[-Wswitch-unreachable]
#define X2() Y(B) if (!x) Y(E)
^~
pragmatest.cpp:55:21: note: in expansion of macro ‘X2’
X2() {
^~
So I tried something which in my mind wouldn't make sense at all - notice that
I wrapped the x **variable** in the Y() macro - but what did I have to lose
anyway? But the following code still (unsurprinsigly?) didn't work:
#define X3() Y(B) if (!Y(x)) Y(E)
int test6(int val) {
switch (val) {
X3() {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test6(int)’:
pragmatest.cpp:63:27: warning: statement will never be executed
[-Wswitch-unreachable]
#define X3() Y(B) if (!Y(x)) Y(E)
^
pragmatest.cpp:66:21: note: in expansion of macro ‘X3’
X3() {
^~
However this time around the warning message gave me a hint! Why would the
compiler complain only about the exclamation mark not being reachable? So I
tried the following... and it worked!
#define X4() Y(B) if (Y(!)x) Y(E)
int test7(int val) {
switch (val) {
X4() {
case 1: return 10;
}
}
return 0;
}
That code above makes the compiler stay silent, against all odds.
So I thought: let's see if removing the Y() wrapping around the pragma macros
still works. Nope, it didn't.
#define X5() B if (Y(!)x) E
int test8(int val) {
switch (val) {
X5() {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test8(int)’:
pragmatest.cpp:85:26: warning: statement will never be executed
[-Wswitch-unreachable]
#define X5() B if (Y(!)x) E
^
pragmatest.cpp:51:18: note: in definition of macro ‘Y’
#define Y(x) x
^
pragmatest.cpp:88:21: note: in expansion of macro ‘X5’
X5() {
^~
Again, the compiler indicated that the error has to do with the exclamation
mark.
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Subject: [Bug driver/85153] _Pragma to disable -Wswitch-unreachable diagnostic not properly working when used within preprocessor macro
Date: Sun, 01 Apr 2018 15:42:00 -0000
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Fabio Alemagna <falemagn at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #43809|0 |1
is obsolete| |
--- Comment #1 from Fabio Alemagna <falemagn at gmail dot com> ---
Created attachment 43810
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43810&action=edit
The preprocessed source, which works as expected
The real one. The previous one was from another test.
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From: "falemagn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/85153] _Pragma to disable -Wswitch-unreachable diagnostic not properly working when used within preprocessor macro
Date: Sun, 01 Apr 2018 16:03:00 -0000
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--- Comment #2 from Fabio Alemagna <falemagn at gmail dot com> ---
And removing the exclamation mark from the if condition actually makes it work
again, but only if the B and E macro are wrapped within the Y() macro,
otherwise it still complains, now indicating the parenthesis as the problem:
#define X6() B if (x) E
int test9(int val) {
switch (val) {
X6() {
case 1: return 10;
}
}
return 0;
}
pragmatest.cpp: In function ‘int test9(int)’:
pragmatest.cpp:96:25: warning: statement will never be executed
[-Wswitch-unreachable]
#define X6() B if (x) E
^
pragmatest.cpp:99:21: note: in expansion of macro ‘X6’
X6() {
^~
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85150] internal compiler error for module with illegal non-constant pointer initialization designator
Date: Sun, 01 Apr 2018 16:27:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The code compiles if I replace
integer :: buf_i = 1
with
integer, parameter :: buf_i = 1
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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/85138] [8 regression] ICE with generic function
Date: Sun, 01 Apr 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 #5 from kargl at gcc dot gnu.org ---
(In reply to Paul Thomas from comment #3)
> (In reply to Dominique d'Humieres from comment #2)
> > Up to revision r258235 (2018-03-04) compiling the test gave the error
> >
> > if (.not.checkFmt(fmt)) then
> > 1
> > Error: Reference to impure function 'checkfmt' at (1) within a PURE procedure
> >
> > After revision r258362 (2018-03-08) I get the ICE. This has been back ported
> > to 7.3.1.
> >
> > In this range I see only r258281, r258305, and r258347, but r258305 has not
> > been back ported.
>
> Bizarrely it is r258347 that is the trigger. It has been backported without
> any ill effects.
>
It's probably not bizarre when a user does something like overloading
the name of an intrinsic subprogram and then tries to use it in a
specification statement. Something that the contributor of r258347
and of very little brain would never do. The simple fix is to not
be too clever.
interface length
module procedure alen, blen ! renamed to shorter symbols for debugging
end interface
function str_real_dp_matrix(xa) result(s)
real, intent(in) :: xa
character(len=length(xa)) :: s
end function str_real_dp_matrix
% gfc -c a.f90
a.f90:12:18:
if (.not.checkFmt(fmt)) then
1
Error: Reference to impure function 'checkfmt' at (1) within a PURE procedure
If I had to guess the gfc_reduce_init_expr() in r258347 is
disabling the reporting of errors at some point when
len=len(xa) is being reduced.
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From: "andrey.y.guskov at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/85154] New: [8 regression] gcc.dg/vect/vect-95.c fail
Date: Sun, 01 Apr 2018 16:34:00 -0000
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Bug ID: 85154
Summary: [8 regression] gcc.dg/vect/vect-95.c fail
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Reporter: andrey.y.guskov at intel dot com
Target Milestone: ---
r258872 triggers this:
spawn -ignore SIGHUP /work/gcc/xgcc -B/work/gcc/
/source/gcc/testsuite/gcc.dg/vect/vect-95.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 -msse2 -ftree-vectorize -fno-vect-cost-model
-fno-common -O2 -fdump-tree-vect-details -lm -o ./vect-95.exe
PASS: gcc.dg/vect/vect-95.c (test for excess errors)
spawn [open ...]
PASS: gcc.dg/vect/vect-95.c execution test
PASS: gcc.dg/vect/vect-95.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/vect-95.c scan-tree-dump-times vect "Alignment of access
forced using peeling" 0
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
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/85090] [8 Regression] wrong code with -O2 -fno-tree-dominator-opts -mavx512f -fira-algorithm=priority
Date: Sun, 01 Apr 2018 16:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85090
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Apr 1 06:05:01 2018
New Revision: 258994
URL: https://gcc.gnu.org/viewcvs?rev=258994&root=gcc&view=rev
Log:
PR middle-end/85090
* config/i386/sse.md (V): Add V64QI and V32HI for TARGET_AVX512F.
(V_128_256): New mode iterator.
(*avx512dq_vextract<shuffletype>64x2_1 splitter): New define_split.
(*avx512f_vextract<shuffletype>32x4_1 splitter): Likewise.
(xop_pcmov_<mode><avxsizesuffix>): Use V_128_256 mode iterator instead
of V.
* config/i386/i386.c (ix86_expand_vector_set): Improve V32HImode and
V64QImode expansion for !TARGET_AVX512BW && TARGET_AVX512F.
* gcc.target/i386/avx512f-pr85090-1.c: New test.
* gcc.target/i386/avx512f-pr85090-2.c: New test.
* gcc.target/i386/avx512f-pr85090-3.c: New test.
* gcc.target/i386/avx512bw-pr85090-2.c: New test.
* gcc.target/i386/avx512bw-pr85090-3.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/avx512bw-pr85090-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512bw-pr85090-3.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-pr85090-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-pr85090-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-pr85090-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/sse.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-599897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 17:23:19 2018
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From: "will at dash dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/71504] bogus error: accessing value through a glvalue in a constant expression
Date: Sun, 01 Apr 2018 17:23:00 -0000
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--- Comment #6 from Will <will at dash dot org> ---
A simpler example exhibiting this bogus error; an innocent, idiomatic,
pedantic, platonic pair of nested range-for loops iterating a 2D array:
g++ prog.cc -Wall -Wextra -std=c++14 -pedantic-errors
#include <type_traits>
template <typename A>
constexpr auto sum(A const& a)
{
int tot = 0;
for (auto& row : a)
for (auto elem : row)
tot += elem;
return tot;
}
constexpr int const a22[2][2] = {{1,2},{3,4}};
static_assert( sum(a22) == 10, "badsum");
prog.cc:17:18: in 'constexpr' expansion of 'sum<int [2][2]>(a22)'
prog.cc:17:24: error: accessing value of 'a22' through a 'const int' glvalue in
a constant expression
>From gcc-bugs-return-599898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 18:33:09 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/85150] internal compiler error for module with illegal non-constant pointer initialization designator
Date: Sun, 01 Apr 2018 18:33:00 -0000
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--- Comment #4 from kargl at gcc dot gnu.org ---
(In reply to Nathan T. Weeks from comment #0)
> The following module code results in an internal compiler error with
> gfortran 7.3.0:
>
> ==================================================================
> $ cat mod_test.f90
> module mod_test
> implicit none
> integer, target :: buf(2)
> integer :: buf_i = 1
> integer, pointer :: buf_ptr => buf(buf_i) ! invalid
> end module mod_test
>
> C461 (R443) The designator shall designate a nonallocatable variable
> that has the TARGET and SAVE attributes and does not have a vector
> subscript. Every subscript, section subscript, substring starting
> point, and substring ending point in designator shall be a constant
> expression.
Oddly, someone added code to check for only a portion of the
constraint in expr.c(gfc_check_assign_symbol). At line 4046,
we find
/* F08:C461. Additional checks for pointer initialization. */
In fact it only checks for TARGET and SAVE. A little sleuthing
shows the code came into the tree with r163356.
>From gcc-bugs-return-599899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 19:54:53 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/85138] [8 regression] ICE with generic function
Date: Sun, 01 Apr 2018 19:54:00 -0000
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The following variant gives the same ICE
module fox_m_fsys_format
interface mylen
module procedure str_real_sp_len, str_real_sp_fmt_len
end interface
contains
pure function str_real_sp_fmt_len(x, fmt) result(n)
real, intent(in) :: x
character(len=*), intent(in) :: fmt
if (.not.checkFmt()) then
endif
end function str_real_sp_fmt_len
pure function str_real_sp_len(x) result(n)
real, intent(in) :: x
n = mylen(x, "")
end function str_real_sp_len
function str_real_dp_matrix(xa) result(s)
real, intent(in) :: xa
character(len=mylen(xa)) :: s
end function str_real_dp_matrix
end module fox_m_fsys_format
>From gcc-bugs-return-599900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 20:03:00 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++/84768] [7/8 Regression] ICE with failed class template argument deduction because of invalid template parameter
Date: Sun, 01 Apr 2018 20:03:00 -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> ---
Something as straightforward as the below avoids the ICE and error recovery is
good. I'll see if I can figure out something better:
Index: pt.c
===================================================================
--- pt.c (revision 258972)
+++ pt.c (working copy)
@@ -26003,6 +26003,12 @@ build_deduction_guide (tree ctor, tree outer_args,
unsigned level = 1;
tree oldelt = TREE_VEC_ELT (ftparms, i);
tree olddecl = TREE_VALUE (oldelt);
+ if (olddecl == error_mark_node)
+ {
+ current_template_parms = save_parms;
+ --processing_template_decl;
+ return error_mark_node;
+ }
tree newdecl = rewrite_template_parm (olddecl, index, level,
tsubst_args, complain);
tree newdef = tsubst_template_arg (TREE_PURPOSE (oldelt),
@@ -26153,6 +26159,8 @@ do_class_deduction (tree ptype, tree tmpl, tree in
for (ovl_iterator iter (CLASSTYPE_CONSTRUCTORS (type)); iter; ++iter)
{
tree guide = build_deduction_guide (*iter, outer_args, complain);
+ if (guide == error_mark_node)
+ return error_mark_node;
if ((flags & LOOKUP_ONLYCONVERTING)
&& DECL_NONCONVERTING_P (STRIP_TEMPLATE (guide)))
elided = true;
>From gcc-bugs-return-599901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 20:18:27 2018
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Subject: [Bug target/85075] powerpc: ICE in iszero testcase
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
__float128 is "g" (long double is "e").
>From gcc-bugs-return-599902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 20:55:13 2018
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From: "andreast at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/84292] __sync_add_and_fetch returns the old value instead of the new value
Date: Sun, 01 Apr 2018 20:55:00 -0000
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Andreas Tobler <andreast at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2018-02-08 00:00:00 |2018-4-1
--- Comment #3 from Andreas Tobler <andreast at gcc dot gnu.org> ---
I could reproduce the issue and I can confirm that the attached patch fixes the
issue.
Once the long awaited gcc-8.x gets released I'll commit the fix to all active
branches and I'll take care that we update the FreeBSD ports tree with a fix
for all gcc versions we (FreeBSD) actively support.
Thanks a lot and sorry for the delay. It took a while to get my arm board back
to live and it took also a while to build a native gcc on it.
>From gcc-bugs-return-599903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 22:05:33 2018
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Subject: [Bug tree-optimization/85143] Loop limit prevents (auto)vectorization
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--- Comment #5 from Marc Glisse <glisse at gcc dot gnu.org> ---
The test becomes
_1 = n_15(D) <= i_46;
_2 = i_46 > 1336;
_3 = _1 | _2;
However, in match.pd, we only handle the AND case. The corresponding IOR
transformation should be handled similarly.
>From gcc-bugs-return-599904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 22:16:25 2018
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Subject: [Bug libstdc++/80654] is_trivially_copy_constructible fails with compiler error with vector of uncopyable objects
Date: Sun, 01 Apr 2018 22:16:00 -0000
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Frank Heckenbach <f.heckenbach@fh-soft.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |f.heckenbach@fh-soft.de
--- Comment #5 from Frank Heckenbach <f.heckenbach@fh-soft.de> ---
Hit the same bug.
It also seems to affect std::deque, std::list, std::forward_list, std::set,
std::unordered_set, std::map, std::unordered_map,
std::multiset, std::unordered_multiset, std::multimap, std::unordered_multimap,
so apparently all standard library containers.
Mentioning in case the fix affects the implementation of std::vector.
>From gcc-bugs-return-599905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 23:11:51 2018
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Subject: [Bug libstdc++/80654] is_trivially_copy_constructible fails with compiler error with vector of uncopyable objects
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80654
--- Comment #6 from Frank Heckenbach <f.heckenbach@fh-soft.de> ---
Tried to use a self-written (simple) container as a stop-gap, but it also fell
prey to this bug. Daniel Krügler wrote: "std::vector's copy constructor is not
SFINAE-friendly and causes std::is_copy_constructible to evaluate to true
regradless of it's element type." The same seems to be true for my container.
Here's a very reduced example that shows the bug:
#include <type_traits>
struct MoveOnly
{
MoveOnly (MoveOnly &&) = default;
};
template <typename T> struct s
{
T v;
s (const s &a): v (a.v) { }
};
using T = s <MoveOnly>;
int main ()
{
static_assert (!std::is_copy_constructible <T>::value, "bug");
T *a, b (*a); // correct error here shows T is not copy-constructible
}
So I guess "not SFINAE-friendly" means that the copy constructor is declared
unconditionally, even if it can't be instantiated due to T not being copyable,
right? Does this mean I need to endow my copy constructor with enable_if (with
all the ugliness that brings), or are there better workarounds (until the
bugfix makes it into a release)?
>From gcc-bugs-return-599906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 23:31:17 2018
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Subject: [Bug libstdc++/80654] is_trivially_copy_constructible fails with compiler error with vector of uncopyable objects
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--- Comment #7 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
That's not a bug. You need to make the copy constructor of s conditionally
deleted depending on whether T is copyconstructible. Otherwise the trait will
result in true but the code will not compile due to an ill-formed definition of
the copy constructor of s, and you'll get the same answer on every C++
compiler.
>From gcc-bugs-return-599907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Apr 01 23:58:25 2018
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Subject: [Bug libstdc++/80654] is_trivially_copy_constructible fails with compiler error with vector of uncopyable objects
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--- Comment #8 from Frank Heckenbach <f.heckenbach@fh-soft.de> ---
(In reply to Ville Voutilainen from comment #7)
> That's not a bug. You need to make the copy constructor of s conditionally
> deleted depending on whether T is copyconstructible.
The copy constructor of std::vector doesn't seem to do that either
(bits/stl_vector.h:326 in 7.3.0) unless I'm missing something.
Is that what Daniel Krügler meant by "not SFINAE-friendly"? But he also wrote:
"This is a QoI issue but not a violation of the requirements of the standard.",
so I'm confused now.
>From gcc-bugs-return-599908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 00:03:43 2018
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Subject: [Bug libstdc++/80654] is_trivially_copy_constructible fails with compiler error with vector of uncopyable objects
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--- Comment #9 from Frank Heckenbach <f.heckenbach@fh-soft.de> ---
Found another possible workaround: "Lie" to the compiler (though is it lying
when you're actually telling it the truth? ;) by specializing
std::is_trivially_copy_constructible like this (of course, one needs to repeat
it for all affected types, e.g. other containers and other non-copyable value
types):
namespace std
{
template <typename T> struct
is_trivially_copy_constructible<std::vector<std::unique_ptr<T>>>: false_type {
};
}
I guess it's totally illegal to put such a specialization into std, but
realistically, can anything bad happen, seeing that it just injects a correct
answer where the default is buggy?
>From gcc-bugs-return-599909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 09:02:56 2018
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Subject: [Bug fortran/70870] Segmentation violation in gfc_assign_data_value
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--- Comment #5 from Vittorio Zecca <zeccav at gmail dot com> ---
After applying the fix in comment 3 to trunk 258946 the ICE disappears
and an error message appears, as it should be.
>From gcc-bugs-return-599910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 09:38:23 2018
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
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Bug 63426 depends on bug 61907, which changed state.
Bug 61907 Summary: load of invalid value for 'bool' in trans-array.c trans_array_constructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61907
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----------------------------------------------------------------------------
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>From gcc-bugs-return-599911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 09:38:23 2018
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Subject: [Bug fortran/61907] load of invalid value for 'bool' in trans-array.c trans_array_constructor
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Vittorio Zecca <zeccav at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Vittorio Zecca <zeccav at gmail dot com> ---
Sanitizer warning was there in 6.4.0 but disappeared in version 7.
>From gcc-bugs-return-599912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 09:41:20 2018
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Subject: [Bug fortran/61910] undefined computation in trans-expr.c gfc_conv_cst_int_power
Date: Mon, 02 Apr 2018 09:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61910
Vittorio Zecca <zeccav at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Vittorio Zecca <zeccav at gmail dot com> ---
Fixed in version 7.
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
Date: Mon, 02 Apr 2018 09:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63426
Bug 63426 depends on bug 61910, which changed state.
Bug 61910 Summary: undefined computation in trans-expr.c gfc_conv_cst_int_power
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61910
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-599914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 10:03:50 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85149] [8 Regression] False branch of if constexpr instantiated in generic lambda
Date: Mon, 02 Apr 2018 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85149
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-04-02
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
Target Milestone|--- |8.0
Summary|False branch of if |[8 Regression] False branch
|constexpr instantiated in |of if constexpr
|generic lambda |instantiated in generic
| |lambda
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r251433.
>From gcc-bugs-return-599915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 10:17:14 2018
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Subject: [Bug fortran/50541] gfortran should not accept a pointer as a generic-name (r178939)
Date: Mon, 02 Apr 2018 10:17:00 -0000
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--- Comment #6 from Vittorio Zecca <zeccav at gmail dot com> ---
Bug still there in 7.3.0 and trunk 258946.
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Subject: [Bug fortran/50550] does not recognize pointer variable at initialization (r178939)
Date: Mon, 02 Apr 2018 10:20:00 -0000
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--- Comment #5 from Vittorio Zecca <zeccav at gmail dot com> ---
Bug still present in 7.3.0 and trunk 258946.
>From gcc-bugs-return-599917-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 10:27:15 2018
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Subject: [Bug fortran/50550] does not recognize pointer variable at initialization (r178939)
Date: Mon, 02 Apr 2018 10:27:00 -0000
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Bug still present in 7.3.0 and trunk 258946.
While closing PRs that have been fixed is very useful, making noise about PRs
marked as NEW is a waste of time for everybody.
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Subject: [Bug fortran/50550] does not recognize pointer variable at initialization (r178939)
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--- Comment #7 from Vittorio Zecca <zeccav at gmail dot com> ---
Sorry about that, long time I did not blush, I'll try to remember the lesson.
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
Date: Mon, 02 Apr 2018 12:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #10 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Apr 2 12:03:16 2018
New Revision: 259006
URL: https://gcc.gnu.org/viewcvs?rev=259006&root=gcc&view=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX and AVX512 features only if their states are supported by
OSXSAVE.
Backport from mainline
PR target/85100
* config/i386/cpuinfo.c (XCR_XFEATURE_ENABLED_MASK): New.
(XSTATE_FP): Likewise.
(XSTATE_SSE): Likewise.
(XSTATE_YMM): Likewise.
(XSTATE_OPMASK): Likewise.
(XSTATE_ZMM): Likewise.
(XSTATE_HI_ZMM): Likewise.
(XCR_AVX_ENABLED_MASK): Likewise.
(XCR_AVX512F_ENABLED_MASK): Likewise.
(get_available_features): Enable AVX and AVX512 features only
if their states are supported by OSXSAVE.
Modified:
branches/gcc-7-branch/libgcc/ChangeLog
branches/gcc-7-branch/libgcc/config/i386/cpuinfo.c
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/70870] Segmentation violation in gfc_assign_data_value
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to kargl from comment #4)
> Hmm.
Patch from comment #3 looks good, and obvious, to me.
So, pre-approved if it survives regression-testing on a
recent trunk.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 8 and GCC 6/7 branches.
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/85100] __builtin_cpu_supports avx does not verify OS supports it
Date: Mon, 02 Apr 2018 12:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #11 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Apr 2 12:09:48 2018
New Revision: 259007
URL: https://gcc.gnu.org/viewcvs?rev=259007&root=gcc&view=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX and AVX512 features only if their states are supported by
OSXSAVE.
Backport from mainline
PR target/85100
* config/i386/cpuinfo.c (XCR_XFEATURE_ENABLED_MASK): New.
(XSTATE_FP): Likewise.
(XSTATE_SSE): Likewise.
(XSTATE_YMM): Likewise.
(XSTATE_OPMASK): Likewise.
(XSTATE_ZMM): Likewise.
(XSTATE_HI_ZMM): Likewise.
(XCR_AVX_ENABLED_MASK): Likewise.
(XCR_AVX512F_ENABLED_MASK): Likewise.
(get_available_features): Enable AVX and AVX512 features only
if their states are supported by OSXSAVE.
Modified:
branches/gcc-6-branch/libgcc/ChangeLog
branches/gcc-6-branch/libgcc/config/i386/cpuinfo.c
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From: "vz-gcc at zeitlins dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85155] New: Suboptimal error messages when using noexcept(false) on defaulted dtor
Date: Mon, 02 Apr 2018 12:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85155
Bug ID: 85155
Summary: Suboptimal error messages when using noexcept(false)
on defaulted dtor
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Consider the following test program:
% cat -n dtor_def_noexcept.cpp
1 struct B {
2 virtual ~B() noexcept(false) = default;
3 };
4
5 struct D : B {
6 virtual ~D() { throw 17; }
7 };
8
9 int main()
10 {
11 try {
12 D d;
13 return 1;
14 } catch (int n) {
15 return n;
16 }
17
18 return 0;
19 }
Compiling it with g++ 8 (gcc version 8.0.1 20180321 (experimental) [trunk
revision 258712] (Debian 8-20180321-1)) results in the following not really
obvious to interpret errors:
% g++-8 -std=c++17 -Wall dtor_def_noexcept.cpp
dtor_def_noexcept.cpp:6:13: error: non-deleted function ‘virtual D::~D()’
virtual ~D() { throw 17; }
^
dtor_def_noexcept.cpp:2:13: error: overriding deleted function ‘virtual
B::~B()’
virtual ~B() noexcept(false) = default;
^
dtor_def_noexcept.cpp: In destructor ‘virtual D::~D()’:
dtor_def_noexcept.cpp:6:18: error: use of deleted function ‘B::~B()’
virtual ~D() { throw 17; }
^
dtor_def_noexcept.cpp:2:13: note: ‘virtual B::~B() noexcept (false)’ is
implicitly deleted because its exception-specification does not match the
implicit exception-specification ‘noexcept’
virtual ~B() noexcept(false) = default;
^
dtor_def_noexcept.cpp:6:26: warning: throw will always call terminate()
[-Wterminate]
virtual ~D() { throw 17; }
^~
dtor_def_noexcept.cpp:6:26: note: in C++11 destructors default to noexcept
dtor_def_noexcept.cpp: In function ‘int main()’:
dtor_def_noexcept.cpp:12:11: error: use of deleted function ‘D::D()’
D d;
^
dtor_def_noexcept.cpp:5:8: note: ‘D::D()’ is implicitly deleted because the
default definition would be ill-formed:
struct D : B {
^
dtor_def_noexcept.cpp:5:8: error: use of deleted function ‘virtual B::~B()’
All of this is correct, of course, but compare it with the error message given
by clang:
% clang-7 -std=c++17 -Wall dtor_def_noexcept.cpp
dtor_def_noexcept.cpp:2:13: error: exception specification of explicitly
defaulted destructor does not match the calculated one
virtual ~B() noexcept(false) = default;
^
1 error generated.
which seems much more clear. It would be nice if gcc error messages could be
improved to emphasize the important one, i.e. that noexcept(false) doesn't
match "= default".
>From gcc-bugs-return-599924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 02 13:16:16 2018
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From: "vegard.nossum at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/85156] New: -O1 -g internal compiler error: gimplification failed
Date: Mon, 02 Apr 2018 13:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85156
Bug ID: 85156
Summary: -O1 -g internal compiler error: gimplification failed
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
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Input (valid code AFAICT):
int a, b;
int f()
{
return __builtin_expect(a ? b != 0 : 0, ({ 1; }));
}
Output:
$ cc1plus -O1 -g
int f()
Analyzing compilation unit
gimplification failed:
<statement_list 0x7f0773a108c0
type <void_type 0x7f07738bbf18 void VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f07738bbf18
pointer_to_this <pointer_type 0x7f07738c30a8>>
head (nil) tail (nil) stmts
>
output/gimplification-failed.cc:5:26: internal compiler error: gimplification
failed
return __builtin_expect(a ? b != 0 : 0, ({ 1; }));
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
0x222d153 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:12395
0x22252a5 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11377
0x22584ec gimplify_expr
/home/vegard/git/gcc/gcc/gimplify.c:12432
0x225de68 gimplify_arg(tree_node**, gimple**, unsigned int, bool)
/home/vegard/git/gcc/gcc/gimplify.c:3179
0x225fe07 gimplify_call_expr
/home/vegard/git/gcc/gcc/gimplify.c:3385
0x22264bf gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11408
0x2224be2 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:12161
0x227b353 gimplify_cond_expr
/home/vegard/git/gcc/gcc/gimplify.c:4066
0x222753a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11393
0x2234081 gimplify_stmt(tree_node**, gimple**)
/home/vegard/git/gcc/gcc/gimplify.c:6660
0x22278eb gimplify_statement_list
/home/vegard/git/gcc/gcc/gimplify.c:1767
0x22278eb gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11865
0x2234081 gimplify_stmt(tree_node**, gimple**)
/home/vegard/git/gcc/gcc/gimplify.c:6660
0x227c1bc gimplify_cond_expr
/home/vegard/git/gcc/gcc/gimplify.c:4054
0x222753a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11393
0x2234081 gimplify_stmt(tree_node**, gimple**)
/home/vegard/git/gcc/gcc/gimplify.c:6660
0x227a9ce gimplify_cond_expr
/home/vegard/git/gcc/gcc/gimplify.c:4025
0x222753a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11393
0x2281d9c gimplify_modify_expr
/home/vegard/git/gcc/gcc/gimplify.c:5628
0x2226d66 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/home/vegard/git/gcc/gcc/gimplify.c:11437
Test case was minimised by C-Reduce, it seems both -O1 and -g are necessary for
the ICE. Clang is fine with it, and 7.3.0 seems fine with it as well.
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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/72709] Incorrect assignment of allocatable character array used as component of derived type
Date: Mon, 02 Apr 2018 13:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72709
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This works:
program show_problem
implicit none
character(len=:), dimension(:), allocatable :: text
allocate(character(len=3) :: text(3))
text(1) = 'abc'
text(2) = '123'
print *,text(1)
end program show_problem
so it is the derived type that causes the problem.
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* [Bug go/84948] [9/10/11/12 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
2018-03-26 12:14 ` [Bug go/84948] [8 regression] ICE in set_from, at go/gofrontend/types.cc:2660 jakub at gcc dot gnu.org
@ 2021-05-14 9:50 ` jakub at gcc dot gnu.org
2021-06-01 8:10 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-05-14 9:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.5 |9.4
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8 branch is being closed.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug go/84948] [9/10/11/12 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
2018-03-26 12:14 ` [Bug go/84948] [8 regression] ICE in set_from, at go/gofrontend/types.cc:2660 jakub at gcc dot gnu.org
2021-05-14 9:50 ` [Bug go/84948] [9/10/11/12 " jakub at gcc dot gnu.org
@ 2021-06-01 8:10 ` rguenth at gcc dot gnu.org
2022-05-27 9:38 ` [Bug go/84948] [10/11/12/13 " rguenth at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-06-01 8:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.4 |9.5
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug go/84948] [10/11/12/13 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2021-06-01 8:10 ` rguenth at gcc dot gnu.org
@ 2022-05-27 9:38 ` rguenth at gcc dot gnu.org
2022-06-28 10:34 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 9:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |10.4
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug go/84948] [10/11/12/13 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2022-05-27 9:38 ` [Bug go/84948] [10/11/12/13 " rguenth at gcc dot gnu.org
@ 2022-06-28 10:34 ` jakub at gcc dot gnu.org
2023-07-07 10:33 ` [Bug go/84948] [11/12/13/14 " rguenth at gcc dot gnu.org
2024-01-21 17:01 ` doko at gcc dot gnu.org
6 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-06-28 10:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |10.5
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug go/84948] [11/12/13/14 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2022-06-28 10:34 ` jakub at gcc dot gnu.org
@ 2023-07-07 10:33 ` rguenth at gcc dot gnu.org
2024-01-21 17:01 ` doko at gcc dot gnu.org
6 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 10:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.5 |11.5
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug go/84948] [11/12/13/14 regression] ICE in set_from, at go/gofrontend/types.cc:2660
[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
` (5 preceding siblings ...)
2023-07-07 10:33 ` [Bug go/84948] [11/12/13/14 " rguenth at gcc dot gnu.org
@ 2024-01-21 17:01 ` doko at gcc dot gnu.org
6 siblings, 0 replies; 7+ messages in thread
From: doko at gcc dot gnu.org @ 2024-01-21 17:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84948
Matthias Klose <doko at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |doko at gcc dot gnu.org
--- Comment #11 from Matthias Klose <doko at gcc dot gnu.org> ---
seen with trunk 20240121 on m68k-linux-gnu, trying to build libgo:
go1: internal compiler error: in set_from, at go/gofrontend/types.cc:2863
0x67b949 Ptrmask::set_from(Gogo*, Type*, long, long)
../../src/gcc/go/gofrontend/types.cc:2863
0x9681a8 Ptrmask::set_from(Gogo*, Type*, long, long)
../../src/gcc/go/gofrontend/types.cc:2837
0x9681a8 Ptrmask::set_from(Gogo*, Type*, long, long)
../../src/gcc/go/gofrontend/types.cc:2896
0x968668 Ptrmask::set_from(Gogo*, Type*, long, long)
../../src/gcc/go/gofrontend/types.cc:3046
0x968668 Type::gc_ptrmask_var(Gogo*, long, long)
../../src/gcc/go/gofrontend/types.cc:3042
0x969399 Type::make_gc_symbol_var(Gogo*)
../../src/gcc/go/gofrontend/types.cc:2722
0x96953a Type::gc_symbol_pointer(Gogo*)
../../src/gcc/go/gofrontend/types.cc:2672
0x8c7da1 Struct_construction_expression::do_get_backend(Translate_context*)
../../src/gcc/go/gofrontend/expressions.cc:17133
0x8c7da1 Struct_construction_expression::do_get_backend(Translate_context*)
../../src/gcc/go/gofrontend/expressions.cc:17133
0x961e68 Type::make_type_descriptor_var(Gogo*)
../../src/gcc/go/gofrontend/types.cc:1433
0x9623dd Type::type_descriptor_pointer(Gogo*, Location)
../../src/gcc/go/gofrontend/types.cc:1308
0x8fa79d Named_object::get_backend(Gogo*, std::vector<Bexpression*,
std::allocator<Bexpression*>
>&, std::vector<Btype*, std::allocator<Btype*> >&, std::vector<Bfunction*,
std::allocator<Bfunc
tion*> >&)
../../src/gcc/go/gofrontend/gogo.cc:8976
0x8fc8f9 Gogo::write_globals()
../../src/gcc/go/gofrontend/gogo.cc:1578
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-14/README.Bugs> for instructions.
make[7]: *** [Makefile:3059: runtime.lo] Error 1
^ permalink raw reply [flat|nested] 7+ messages in thread
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[not found] <bug-84948-4@http.gcc.gnu.org/bugzilla/>
2018-03-26 12:14 ` [Bug go/84948] [8 regression] ICE in set_from, at go/gofrontend/types.cc:2660 jakub at gcc dot gnu.org
2021-05-14 9:50 ` [Bug go/84948] [9/10/11/12 " jakub at gcc dot gnu.org
2021-06-01 8:10 ` rguenth at gcc dot gnu.org
2022-05-27 9:38 ` [Bug go/84948] [10/11/12/13 " rguenth at gcc dot gnu.org
2022-06-28 10:34 ` jakub at gcc dot gnu.org
2023-07-07 10:33 ` [Bug go/84948] [11/12/13/14 " rguenth at gcc dot gnu.org
2024-01-21 17:01 ` doko at gcc dot gnu.org
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