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* [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds"
@ 2013-02-26 9:48 amylaar at gcc dot gnu.org
2013-02-26 10:18 ` [Bug tree-optimization/56456] " rguenth at gcc dot gnu.org
` (77 more replies)
0 siblings, 78 replies; 79+ messages in thread
From: amylaar at gcc dot gnu.org @ 2013-02-26 9:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug #: 56456
Summary: [meta-bug] bogus warning when inlining: "array
subscript is above array bounds"
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Keywords: meta-bug
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: amylaar@gcc.gnu.org
Depends on: 35392, 38480, 41847, 45180, 45978, 47418, 53198
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining: "array subscript is above array bounds"
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
@ 2013-02-26 10:18 ` rguenth at gcc dot gnu.org
2014-06-12 13:07 ` [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining or unrolling: " rguenth at gcc dot gnu.org
` (76 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-02-26 10:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-02-26
Ever Confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-26 10:18:08 UTC ---
Confirmed. Thanks for adding this meta-bug ...
General note: most of these bugs are symptoms for missed VRP opportunities
(though sometimes very hard to unleash).
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining or unrolling: "array subscript is above array bounds"
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
2013-02-26 10:18 ` [Bug tree-optimization/56456] " rguenth at gcc dot gnu.org
@ 2014-06-12 13:07 ` rguenth at gcc dot gnu.org
2015-02-24 14:05 ` rguenth at gcc dot gnu.org
` (75 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-06-12 13:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 53198, which changed state.
Bug 53198 Summary: [4.7 Regression] gcc wrongly emits "array subscript is above array bounds" for simple arrays
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53198
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining or unrolling: "array subscript is above array bounds"
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
2013-02-26 10:18 ` [Bug tree-optimization/56456] " rguenth at gcc dot gnu.org
2014-06-12 13:07 ` [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining or unrolling: " rguenth at gcc dot gnu.org
@ 2015-02-24 14:05 ` rguenth at gcc dot gnu.org
2019-03-18 23:49 ` [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds msebor at gcc dot gnu.org
` (74 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-02-24 14:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 56273, which changed state.
Bug 56273 Summary: [4.8 regression] Bogus -Warray-bounds warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56273
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (2 preceding siblings ...)
2015-02-24 14:05 ` rguenth at gcc dot gnu.org
@ 2019-03-18 23:49 ` msebor at gcc dot gnu.org
2020-04-13 20:27 ` msebor at gcc dot gnu.org
` (73 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2019-03-18 23:49 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 1654580 bytes --]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 89720, which changed state.
Bug 89720 Summary: [9 Regression] Spurious -Warray-bounds warning on a range with max < min
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89720
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-637834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 18 23:49:25 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89720] [9 Regression] Spurious -Warray-bounds warning on a range with max < min
Date: Mon, 18 Mar 2019 23:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89720
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Mon Mar 18 23:48:50 2019
New Revision: 269785
URL: https://gcc.gnu.org/viewcvs?rev=269785&root=gcc&view=rev
Log:
PR tree-optimization/89720 - Spurious -Warray-bounds warning on a range with
max < min
gcc/ChangeLog:
PR tree-optimization/89720
* tree-vrp.c (vrp_prop::check_mem_ref): Treat range with max < min
more conservatively, the same as anti-range.
gcc/testsuite/ChangeLog:
PR tree-optimization/89720
* gcc.dg/Warray-bounds-42.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Warray-bounds-42.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89720] [9 Regression] Spurious -Warray-bounds warning on a range with max < min
Date: Mon, 18 Mar 2019 23:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89720
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch committed in r269785.
>From gcc-bugs-return-637837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 00:02:16 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89720] [9 Regression] Spurious -Warray-bounds warning on a range with max < min
Date: Tue, 19 Mar 2019 00:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89720
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Steinar H. Gunderson from comment #3)
> Are there also any plans to make the warning easier to trace?
If you are referring to the missing inlining context (as discussed in bug
86650) then hopefully in GCC 10. Otherwise please explain what you mean, or
better yet, open a bug pointing out the problem.
>From gcc-bugs-return-637839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 02:56:42 2019
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From: "klystron25 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89767] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 02:56:00 -0000
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--- Comment #1 from Steven Blah <klystron25 at gmail dot com> ---
This also fails on 8.2.
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From: "klystron25 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89767] New: ICE with tuple and optimization
Date: Tue, 19 Mar 2019 02:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89767
Bug ID: 89767
Summary: ICE with tuple and optimization
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: klystron25 at gmail dot com
Target Milestone: ---
Created attachment 45994
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45994&action=edit
preprocessed source
The following source file causes ICE when -O2 is used. This code compiles
correctly with the same command line on gcc 7.3.0.
This is gcc 8.3.0 running on amd64. I am runnig gentoo, but I downloaded 8.3.0
source and built it from scratch just to ensure it wasn't gentoo's patchset. I
tried a simple configure with just --enable-languages=c,c++ and then this below
which I'm providing the report from:
Configured with: /var/tmp/portage/sys-devel/gcc-8.3.0/work/gcc-8.3.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/8.3.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/8.3.0/python
--enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror
--with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 8.3.0 p1.0' --disable-esp --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--enable-vtable-verify --disable-libquadmath --enable-lto --without-isl
--enable-default-pie --enable-default-ssp
Thread model: posix
/home/darkwing/gcc/usr/x86_64-pc-linux-gnu/gcc-bin/8.3.0/c++ -Dmsb_EXPORTS
-I/home/darkwing/work/nasa/pace/opt/include/efsi
-I/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/include
-I/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/include/internal -fPIC
-fvisibility=hidden --std=c++14 -pedantic -Wall -Wextra -Wundef
-Wno-noexcept-type -save-temps -o
CMakeFiles/msb.dir/src/connection/internal.cpp.o -c
/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/src/connection/internal.cpp
-O2
In file included from
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/bits/hashtable_policy.h:34,
from
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/bits/hashtable.h:35,
from
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/unordered_map:46,
from
/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/include/internal/connection.hpp:4,
from
/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/src/connection/internal.cpp:1:
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/tuple:
In instantiation of ‘constexpr _Head& std::__get_helper(std::_Tuple_impl<_Idx,
_Head, _Tail ...>&) [with long unsigned int __i = 1; _Head =
std::shared_ptr<msb::node>; _Tail = {}]’:
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/tuple:1315:36:
required from ‘constexpr std::__tuple_element_t<__i, std::tuple<_Elements
...> >& std::get(std::tuple<_Elements ...>&) [with long unsigned int __i = 1;
_Elements = {std::shared_ptr<msb::internal::model_support::node_subscriber>,
std::shared_ptr<msb::node>}; std::__tuple_element_t<__i, std::tuple<_Elements
...> > = std::shared_ptr<msb::node>]’
/home/darkwing/work/efs/sts/repos/cvt/msb/libmsb/src/connection/internal.cpp:92:92:
required from here
/home/darkwing/gcc/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/include/g++-v8/tuple:1303:5:
internal compiler error: Segmentation fault
__get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t) noexcept
^~~~~~~~~~~~
0xb5688f crash_signal
../../gcc-8.3.0/gcc/toplev.c:325
0x66d25d check_local_shadow
../../gcc-8.3.0/gcc/cp/name-lookup.c:2670
0x66d25d do_pushdecl
../../gcc-8.3.0/gcc/cp/name-lookup.c:3084
0x66d25d pushdecl(tree_node*, bool)
../../gcc-8.3.0/gcc/cp/name-lookup.c:3152
0x617626 store_parm_decls
../../gcc-8.3.0/gcc/cp/decl.c:15454
0x617626 start_preparsed_function(tree_node*, tree_node*, int)
../../gcc-8.3.0/gcc/cp/decl.c:15328
0x6b84b8 instantiate_decl(tree_node*, bool, bool)
../../gcc-8.3.0/gcc/cp/pt.c:24048
0x5f26e4 cxx_eval_call_expression
../../gcc-8.3.0/gcc/cp/constexpr.c:1563
0x5f374d cxx_eval_constant_expression
../../gcc-8.3.0/gcc/cp/constexpr.c:4231
0x5f741c cxx_eval_outermost_constant_expr
../../gcc-8.3.0/gcc/cp/constexpr.c:4894
0x5f937e maybe_constant_value(tree_node*, tree_node*)
../../gcc-8.3.0/gcc/cp/constexpr.c:5112
0x603f92 cp_fold
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2521
0x6043cc cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2075
0x6033ca cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2216
0x6033ca cp_fold
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2216
0x6043cc cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2075
0x6033ca cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2216
0x6033ca cp_fold
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2216
0x6043cc cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2075
0x6033ca cp_fold_maybe_rvalue
../../gcc-8.3.0/gcc/cp/cp-gimplify.c:2216
Please submit a full bug report,
with preprocessed source if appropriate.
>From gcc-bugs-return-637840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 04:27:32 2019
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Subject: [Bug c++/87480] [8/9 Regression] SFINAE constructor not matched, only in templated function
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Subject: [Bug c/89734] [7/8/9 Regression] const qualifier on return type not erased inside __typeof__
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 06:55:31 2019
New Revision: 269789
URL: https://gcc.gnu.org/viewcvs?rev=269789&root=gcc&view=rev
Log:
PR c/89734
* c-decl.c (grokdeclarator): Call c_build_qualified_type on function
return type even if quals_used is 0. Formatting fixes.
* gcc.dg/pr89734.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89734.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-637842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 07:04:27 2019
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Subject: [Bug middle-end/65244] Bogus -Wmaybe-uninitialized warning with posix_memalign() and -Og
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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| |a/show_bug.cgi?id=89723
--- Comment #14 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #13)
> Bug 78394 is also about -Wmaybe-uninitialized with -Og
as is bug 89723
>From gcc-bugs-return-637843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 07:13:32 2019
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Subject: [Bug tree-optimization/78394] False positives of maybe-uninitialized with -Og
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--- Comment #15 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #14)
> (In reply to Jeffrey A. Law from comment #12)
> > Whether or not to fix as well as whether or not to warn at -O0 are a topic
> > of debate. I'm not sure I'm up for re-opening that can of worms right now.
>
> I think we can both work on reducing false positives and move it out of
> -Wall, it isn't exclusive.
>
> > I strongly believe -Wmaybe-uninitialized should continue to be enabled by
> > -Wall. They tend to either point out obscure ways objects are
> > uninitialized or they point out missed optimizations. Both are critical in
> > my mind.
>
> -Wall
> This enables all the warnings about constructions that some users
> consider questionable, and that are easy to avoid (or modify to
> prevent the warning), even in conjunction with macros.
>
> I don't see how you can ever satisfy the "easy to avoid" part. In my
> experience with several code bases, having this warning in -Wall (as opposed
> to -Wextra) does more harm than good, with people doing random bad code
> changes to try and get the compiler to shut up.
>
> I still believe this warning is a very useful static analysis tool (I
> contributed to make it appear more often in the past), but by definition it
> will never avoid false positives.
For reference, this conversation moved to gcc-patches here:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00020.html
>From gcc-bugs-return-637844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 07:24:37 2019
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Subject: [Bug rtl-optimization/89753] [8/9 Regression] ICE in unroll_loop_constant_iterations, at loop-unroll.c:498
Date: Tue, 19 Mar 2019 07:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The ICE started with r255973. The PR89588 fix is committed and it still ICEs.
>From gcc-bugs-return-637845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 07:26:14 2019
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Subject: [Bug rtl-optimization/89768] New: ICE in compare_and_jump_seq at loop-unroll.c:838
Date: Tue, 19 Mar 2019 07:26:00 -0000
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Bug ID: 89768
Summary: ICE in compare_and_jump_seq at loop-unroll.c:838
Product: gcc
Version: 9.0
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I know the params have very extreme values, but still:
$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr80565.c
--param max-unroll-times=100000 --param max-unrolled-insns=1000000
-funroll-loops -Ofast --param max-average-unrolled-insns=1858613514
-fno-tree-dominator-opts
during RTL pass: loop2_unroll
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr80565.c: In
function ‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/torture/pr80565.c:41:1:
internal compiler error: Segmentation fault
41 | }
| ^
0xd1c3ef crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff79b5e0f ???
/usr/src/debug/glibc-2.29-3.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xb905ab rtx_jump_insn* as_a<rtx_jump_insn*, rtx_insn>(rtx_insn*)
/home/marxin/Programming/gcc/gcc/is-a.h:197
0xb905ab compare_and_jump_seq
/home/marxin/Programming/gcc/gcc/loop-unroll.c:838
0xb937ab unroll_loop_runtime_iterations
/home/marxin/Programming/gcc/gcc/loop-unroll.c:1023
0xb937ab unroll_loops(int)
/home/marxin/Programming/gcc/gcc/loop-unroll.c:299
0xb8413f execute
/home/marxin/Programming/gcc/gcc/loop-init.c:584
0xb8413f execute
/home/marxin/Programming/gcc/gcc/loop-init.c:571
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Subject: [Bug target/89726] [7/8/9 Regression] Incorrect inlined version of 'ceil' for 32bit
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 07:25:59 2019
New Revision: 269790
URL: https://gcc.gnu.org/viewcvs?rev=269790&root=gcc&view=rev
Log:
PR target/89726
* config/i386/i386.c (ix86_expand_floorceildf_32): In ceil
compensation use x2 += 1 instead of x2 -= -1 and when honoring
signed zeros, do another copysign after the compensation.
* gcc.target/i386/fpprec-1.c (x): Add 6 new constants.
(expect_round, expect_rint, expect_floor, expect_ceil, expect_trunc):
Add expected results for them.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/fpprec-1.c
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Subject: [Bug tree-optimization/89720] [9 Regression] Spurious -Warray-bounds warning on a range with max < min
Date: Tue, 19 Mar 2019 07:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89720
--- Comment #7 from Steinar H. Gunderson <steinar+gcc at gunderson dot no> ---
The inlining context, yes. Thanks for pointing out the relevant bug.
>From gcc-bugs-return-637848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 07:56:27 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
Date: Tue, 19 Mar 2019 07:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89766
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-19
CC| |jakub at gcc dot gnu.org
Version|unknown |8.3.1
Target Milestone|--- |8.4
Summary|ICE: canonical types differ |[8 Regression] ICE:
|for identical types, |canonical types differ for
|-std=c++17 |identical types, -std=c++17
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I can reproduce on current 8.x branch, can't reproduce with 8.3.1 20190223, nor
at 8.x branchpoint, nor gcc trunk.
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Subject: [Bug libfortran/89747] valgrind error in gfc_match_decl_type_spec
Date: Tue, 19 Mar 2019 07:57:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
I was able to reproduce that, but is gone with
--expensive-definedness-checks=yes.
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Subject: [Bug rtl-optimization/89753] [8/9 Regression] ICE in unroll_loop_constant_iterations, at loop-unroll.c:498
Date: Tue, 19 Mar 2019 08:07:00 -0000
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Mar 19 08:06:48 2019
New Revision: 269791
URL: https://gcc.gnu.org/viewcvs?rev=269791&root=gcc&view=rev
Log:
PR rtl-optimization/89753
* loop-unroll.c (decide_unroll_constant_iterations): Make guard for
explicit unrolling factor even more robust.
Added:
trunk/gcc/testsuite/c-c++-common/unroll-7.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/loop-unroll.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/89760] [9 Regression] libstdc++ experimental testsuite failures
Date: Tue, 19 Mar 2019 08:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
Date: Tue, 19 Mar 2019 08:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-checking,
| |ice-on-valid-code
Priority|P3 |P2
Known to work| |8.1.0, 9.0
Known to fail| |8.3.1
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Subject: [Bug rtl-optimization/89753] [8/9 Regression] ICE in unroll_loop_constant_iterations, at loop-unroll.c:498
Date: Tue, 19 Mar 2019 08:10:00 -0000
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--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Mar 19 08:10:08 2019
New Revision: 269792
URL: https://gcc.gnu.org/viewcvs?rev=269792&root=gcc&view=rev
Log:
PR rtl-optimization/89753
* loop-unroll.c (decide_unroll_constant_iterations): Make guard for
explicit unrolling factor even more robust.
Added:
branches/gcc-8-branch/gcc/testsuite/c-c++-common/unroll-7.c
- copied unchanged from r269791,
trunk/gcc/testsuite/c-c++-common/unroll-7.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/loop-unroll.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89753] [8/9 Regression] ICE in unroll_loop_constant_iterations, at loop-unroll.c:498
Date: Tue, 19 Mar 2019 08:11:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
.
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 08:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P2
Known to work| |7.3.0
Target Milestone|--- |9.0
Summary|ICE with tuple and |[8/9 Regression] ICE with
|optimization |tuple and optimization
Known to fail| |8.2.0, 8.3.0
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Subject: [Bug target/89752] [8/9 Regression] ICE in emit_move_insn, at expr.c:3723
Date: Tue, 19 Mar 2019 08:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89752
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 08:11:25 2019
New Revision: 269793
URL: https://gcc.gnu.org/viewcvs?rev=269793&root=gcc&view=rev
Log:
PR target/89752
* gimplify.c (gimplify_asm_expr): For output argument with
TREE_ADDRESSABLE type, clear allows_reg if it allows memory, otherwise
diagnose error.
* g++.dg/ext/asm15.C: Check for particular diagnostic wording.
* g++.dg/ext/asm16.C: Likewise.
* g++.dg/ext/asm17.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/asm17.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/ext/asm15.C
trunk/gcc/testsuite/g++.dg/ext/asm16.C
>From gcc-bugs-return-637857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:18:38 2019
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Subject: [Bug target/89752] [8/9 Regression] ICE in emit_move_insn, at expr.c:3723
Date: Tue, 19 Mar 2019 08:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89752
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the originally provided testcase, not on the #c7 testcase, that needs
to be fixed in LRA not to try to reload BLKmode MEMs into REGs.
>From gcc-bugs-return-637858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:24:55 2019
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
Date: Tue, 19 Mar 2019 08:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89766
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I can reproduce that, but only with GCC tip:
gcc version 8.3.1 20190319 (GCC)
$ ./xg++ -B. /home/marxin/Programming/testcases/pr89766.cpp -c -fchecking
-std=c++17 --param ggc-min-expand=0 --param ggc-min-heapsize=0
/home/marxin/Programming/testcases/pr89766.cpp:7:47: internal compiler error:
canonical types differ for identical types ‘a’ and ‘<template-parameter-2-1>’
template <typename, typename> bool e() const;
^
0xa1338f comptypes(tree_node*, tree_node*, int)
../../gcc/cp/typeck.c:1480
0x98bae1 comp_template_parms(tree_node const*, tree_node const*)
../../gcc/cp/pt.c:3302
0x8579e5 add_method(tree_node*, tree_node*, bool)
../../gcc/cp/class.c:1062
0x9e201c finish_member_declaration(tree_node*)
../../gcc/cp/semantics.c:3114
0x95ffa5 cp_parser_template_declaration_after_parameters
../../gcc/cp/parser.c:27077
0x960419 cp_parser_explicit_template_declaration
../../gcc/cp/parser.c:27236
0x960473 cp_parser_template_declaration_after_export
../../gcc/cp/parser.c:27255
0x94bcfd cp_parser_template_declaration
../../gcc/cp/parser.c:15026
0x95a413 cp_parser_member_declaration
../../gcc/cp/parser.c:23552
0x95a306 cp_parser_member_specification_opt
../../gcc/cp/parser.c:23479
0x95891e cp_parser_class_specifier_1
../../gcc/cp/parser.c:22610
0x95936a cp_parser_class_specifier
../../gcc/cp/parser.c:22872
0x94e900 cp_parser_type_specifier
../../gcc/cp/parser.c:16788
0x949dd0 cp_parser_decl_specifier_seq
../../gcc/cp/parser.c:13626
0x960585 cp_parser_single_declaration
../../gcc/cp/parser.c:27307
0x95fc98 cp_parser_template_declaration_after_parameters
../../gcc/cp/parser.c:26999
0x960419 cp_parser_explicit_template_declaration
../../gcc/cp/parser.c:27236
0x960473 cp_parser_template_declaration_after_export
../../gcc/cp/parser.c:27255
0x94bcfd cp_parser_template_declaration
../../gcc/cp/parser.c:15026
0x94824b cp_parser_declaration
../../gcc/cp/parser.c:12724
(gdb) p debug_tree(t1)
<template_type_parm 0x7ffff7a32dc8 a VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7a32a80
index 0 level 2 orig_level 2
chain <type_decl 0x7ffff79fcd10 a>>
$3 = void
(gdb) p debug_tree(t2)
<template_type_parm 0x7ffff7a47348 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7a32f18
index 0 level 2 orig_level 2
chain <type_decl 0x7ffff79fce40 D.2149>>
(gdb) p debug_tree((tree)0x7ffff7a32a80)
<template_type_parm 0x7ffff7a32a80 a VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7a32a80
index 0 level 2 orig_level 2
chain <type_decl 0x7ffff79fca18 a>>
(gdb) p debug_tree((tree)0x7ffff7a32f18)
<template_type_parm 0x7ffff7a32f18 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7a32f18
index 0 level 2 orig_level 2
chain <type_decl 0x7ffff79fc720 D.2127>>
>From gcc-bugs-return-637859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:26:38 2019
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
Date: Tue, 19 Mar 2019 08:26:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
@RJ: Btw. do you see the ICE also for a valid C++ code? The test-case you
provided isn't valid if I'm correct?
>From gcc-bugs-return-637860-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:30:46 2019
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reducing and bisecting now.
>From gcc-bugs-return-637861-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:36:03 2019
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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--- Comment #4 from Rimvydas (RJ) <rimvydas.jas at gmail dot com> ---
@Martin: Yes, ICE happens for valid code too only if -fchecking=1. Reduced
cases are invalid and rejected by 9.0.1 20190319 and 8.2.1 20181127.
However 8.3.1 20190319 accepts them even for -fchecking=0.
>From gcc-bugs-return-637862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:38:17 2019
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Rimvydas (RJ) from comment #4)
> @Martin: Yes, ICE happens for valid code too only if -fchecking=1. Reduced
> cases are invalid and rejected by 9.0.1 20190319 and 8.2.1 20181127.
> However 8.3.1 20190319 accepts them even for -fchecking=0.
Please attach the valid code snippet.
>From gcc-bugs-return-637863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 08:38:31 2019
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-valid-code |ice-on-invalid-code
Priority|P2 |P1
CC| |jason at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r269512 aka PR88419 fix.
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
Date: Tue, 19 Mar 2019 08:43:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Indeed, the invalid testcase is now accepted:
$ ./cc1plus.269511 -quiet pr89766.C -std=c++17 -fno-checking; echo $?
pr89766.C:7:38: error: ‘template<class> template<class, class> bool d<
<template-parameter-1-1> >::e() const’ cannot be overloaded with
‘template<class> template<class a, class> bool d< <template-parameter-1-1>
>::e() const’
template <typename, typename> bool e() const;
^
pr89766.C:6:40: note: previous declaration ‘template<class> template<class a,
class> bool d< <template-parameter-1-1> >::e() const’
template <typename a, typename> bool e() const;
^
1
$ ./cc1plus.269512 -quiet pr89766.C -std=c++17 -fno-checking; echo $?
0
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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--- Comment #8 from Rimvydas (RJ) <rimvydas.jas at gmail dot com> ---
Created attachment 45995
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45995&action=edit
Compressed original case (3.3M).
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Subject: [Bug rtl-optimization/89768] [7/8/9 Regression] ICE in compare_and_jump_seq at loop-unroll.c:838
Date: Tue, 19 Mar 2019 09:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in compare_and_jump_seq |[7/8/9 Regression] ICE in
|at loop-unroll.c:838 |compare_and_jump_seq at
| |loop-unroll.c:838
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r204194.
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Subject: [Bug ipa/89762] [8 Regression] Mixing optimization levels with ostream gives lto1: internal compiler error: in get_odr_type, at ipa-devirt.c:2098
Date: Tue, 19 Mar 2019 09:16:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-19
Known to work| |7.4.0, 9.0
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|Mixing optimization levels |[8 Regression] Mixing
|with ostream gives lto1: |optimization levels with
|internal compiler error: in |ostream gives lto1:
|get_odr_type, at |internal compiler error: in
|ipa-devirt.c:2098 |get_odr_type, at
| |ipa-devirt.c:2098
Ever confirmed|0 |1
Known to fail| |8.3.1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started on trunk in r259479 and was fixed in r265638.
Honza is the patch subject for backport?
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Subject: [Bug rtl-optimization/89768] [7/8/9 Regression] ICE in compare_and_jump_seq at loop-unroll.c:838
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I can reproduce even with
--param max-unroll-times=70000 --param max-unrolled-insns=280000 -funroll-loops
-Ofast --param max-average-unrolled-insns=280000 -fno-tree-dominator-opts
pr80565.c
--- gcc/loop-unroll.c.jj 2019-03-19 09:09:32.686006683 +0100
+++ gcc/loop-unroll.c 2019-03-19 10:15:50.319343904 +0100
@@ -652,7 +652,7 @@ unroll_loop_constant_iterations (struct
if (loop->any_likely_upper_bound)
loop->nb_iterations_likely_upper_bound
= wi::udiv_trunc (loop->nb_iterations_likely_upper_bound, max_unroll +
1);
- desc->niter_expr = GEN_INT (desc->niter);
+ desc->niter_expr = gen_int_mode (desc->niter, desc->mode);
/* Remove the edges. */
FOR_EACH_VEC_ELT (remove_edges, i, e)
@@ -1020,9 +1020,9 @@ unroll_loop_runtime_iterations (struct l
preheader = split_edge (loop_preheader_edge (loop));
/* Add in count of edge from switch block. */
preheader->count += iter_count;
- branch_code = compare_and_jump_seq (copy_rtx (niter), GEN_INT (j), EQ,
- block_label (preheader), p,
- NULL);
+ branch_code = compare_and_jump_seq (copy_rtx (niter),
+ gen_int_mode (j, desc->mode), EQ,
+ block_label (preheader), p, NULL);
/* We rely on the fact that the compare and jump cannot be optimized
out,
and hence the cfg we create is correct. */
fixes the ICE, still the testcase is not usable for the testsuite, seems it has
481318 basic blocks in the function and seems to spent like forever in
#0 0x0000000000bbf031 in et_splay (occ=0x2f8b4c8) at ../../gcc/et-forest.c:319
#1 0x0000000000bbfc2d in et_below (down=0x301e8f8, up=0x301eaa8) at
../../gcc/et-forest.c:718
#2 0x0000000000b181be in dominated_by_p (dir=CDI_DOMINATORS,
bb1=0x7fffea96e138, bb2=0x7fffea97f208) at ../../gcc/dominance.c:1126
#3 0x0000000000b1865a in prune_bbs_to_update_dominators (bbs=...,
conservative=true) at ../../gcc/dominance.c:1257
#4 0x0000000000b18c94 in iterate_fix_dominators (dir=CDI_DOMINATORS, bbs=...,
conservative=true) at ../../gcc/dominance.c:1464
#5 0x0000000000a7f150 in remove_path (e=<error reading variable: Cannot access
memory at address 0xa5a5a5a5a5a5a5f9>,
irred_invalidated=0x7fffffffce4f, loop_closed_ssa_invalidated=0x0) at
../../gcc/cfgloopmanip.c:412
#6 0x0000000000eab54e in unroll_loop_runtime_iterations (loop=0x7fffea953000)
at ../../gcc/loop-unroll.c:1110
#7 0x0000000000ea91f8 in unroll_loops (flags=1) at ../../gcc/loop-unroll.c:299
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Subject: [Bug sanitizer/89764] [8 Regression] ubsan diagnostic on generic lambdas decayed to function pointers
Date: Tue, 19 Mar 2019 09:33:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-19
Known to work| |7.4.0, 9.0
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|ubsan diagnostic on generic |[8 Regression] ubsan
|lambdas decayed to function |diagnostic on generic
|pointers |lambdas decayed to function
| |pointers
Ever confirmed|0 |1
Known to fail| |8.3.1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, I probably see it only for GCC 8.x branch. Let me bisect that..
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Another (hopefully valid) testcase, accepted by trunk, r269511 and clang++, all
with -std=c++17, ICEs with r269512 and up.
struct A;
template <typename, template <typename> class> struct B;
template <template <typename> class T> struct B<int, T>;
template <class> struct C {
template <class> int operator[] (int) const;
template <class T> int operator[] (A) const;
};
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89768] [7/8/9 Regression] ICE in compare_and_jump_seq at loop-unroll.c:838
Date: Tue, 19 Mar 2019 09:52:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45996
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45996&action=edit
gcc9-pr89768.patch
Full patch I'm going to bootstrap/regtest.
>From gcc-bugs-return-637872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:01:51 2019
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Subject: [Bug sanitizer/89764] [8 Regression] ubsan diagnostic on generic lambdas decayed to function pointers
Date: Tue, 19 Mar 2019 10:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.4
>From gcc-bugs-return-637874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:05:46 2019
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Subject: [Bug target/89506] [7/8 Regression] ICE: in decompose, at rtl.h:2266 with -Og -g
Date: Tue, 19 Mar 2019 10:05:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 10:05:10 2019
New Revision: 269795
URL: https://gcc.gnu.org/viewcvs?rev=269795&root=gcc&view=rev
Log:
PR target/89506
* config/arm/arm.md (cmpsi2_addneg): Swap the alternatives and use
subs for the first alternative except when operands[3] is 1.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.md
>From gcc-bugs-return-637873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:05:13 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89571] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
Date: Tue, 19 Mar 2019 10:05:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |paolo.carlini at oracle dot com
--- Comment #10 from Paolo Carlini <paolo.carlini at oracle dot com> ---
For error-recovery sake, I think that we can just skip the functions with
eh_spec == error_mark_node and continue the loop:
Index: method.c
===================================================================
--- method.c (revision 269783)
+++ method.c (working copy)
@@ -2274,6 +2274,9 @@ after_nsdmi_defaulted_late_checks (tree t)
continue;
tree eh_spec = get_defaulted_eh_spec (fn);
+ if (eh_spec == error_mark_node)
+ continue;
+
if (!comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (fn)),
eh_spec, ce_normal))
DECL_DELETED_FN (fn) = true;
What do you think, Jason?
>From gcc-bugs-return-637875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:39:50 2019
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Subject: [Bug debug/88389] -flto -g -gsplit-dwarf is broken
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |SUSPENDED
Last reconfirmed| |2019-03-19
Target Milestone|8.4 |---
Summary|[8/9 Regression] -flto -g |-flto -g -gsplit-dwarf is
|-gsplit-dwarf is broken |broken
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the issues are multiples. First of all the way we handle split-dwarf
requires the driver to objcopy the .dwo sections to the .o.dwo files - this
step
would have to happen after copying out early debug into temporaries. But then
I have a hard time seeing how to find the debug.
Of course -gsplit-dwarf at link-time doesn't make much sense.
I guess the proper way of doing -gsplit-dwarf at compile-time with -flto
would be to emit a _single_ (independent of -ffat-lto-objects) set of
.dwo sections from dwarf2out_early_finish - in fact move _all_ of the
split-dwarf handling there. Then the only "LTO" debug sections would be
the skeleton ones. There's still the unsolved issue that late debug info
will refer to DIEs in the .dwo debug in its symbol + offset way which of
course does not work. There's no way to do this since .dwo files are
designed to have _all_ the debug info, not just type or decl parts like
-fdebug-types-sections.
So -flto looks like fundamentally incompatible with -gsplit-dwarf
and I doubt it's worth supporting it for the fat part of the objects.
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Subject: [Bug target/89752] [8/9 Regression] ICE in emit_move_insn, at expr.c:3723
Date: Tue, 19 Mar 2019 10:52:00 -0000
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The following patch fixes the remaining ICE for me:
--- gcc/lra-constraints.c.jj 2019-03-16 22:17:21.060937047 +0100
+++ gcc/lra-constraints.c 2019-03-19 11:49:11.982058568 +0100
@@ -2350,6 +2350,8 @@ process_alt_operands (int only_alternati
break;
reg:
+ if (mode == BLKmode)
+ break;
this_alternative = reg_class_subunion[this_alternative][cl];
IOR_HARD_REG_SET (this_alternative_set,
reg_class_contents[cl]);
@@ -2360,8 +2362,6 @@ process_alt_operands (int only_alternati
IOR_HARD_REG_SET (this_costly_alternative_set,
reg_class_contents[cl]);
}
- if (mode == BLKmode)
- break;
winreg = true;
if (REG_P (op))
{
What in my understanding happens is that even when the r constraint for the
BLKmode MEM doesn't win, this_alternative is still updated (to GENERAL_REGS in
this case) and as the m constraint matches, we still process it as if
GENERAL_REGS is an option. It is not, BLKmode must live in memory.
>From gcc-bugs-return-637877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:57:56 2019
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Subject: [Bug sanitizer/89764] [8 Regression] ubsan diagnostic on generic lambdas decayed to function pointers
Date: Tue, 19 Mar 2019 10:57:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with Jason's r268700 aka PR86943.
>From gcc-bugs-return-637878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 10:59:09 2019
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From: "xuzheliang at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89769] New: attribute((aligned(x))) array testcae run error with option -fno-tree-loop-im
Date: Tue, 19 Mar 2019 10:59:00 -0000
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Bug ID: 89769
Summary: attribute((aligned(x))) array testcae run error with
option -fno-tree-loop-im
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: xuzheliang at huawei dot com
Target Milestone: ---
>>cat pr43783.c
typedef __attribute__((aligned(16)))
struct {
unsigned long long w[3];
} UINT192;
UINT192 bid_Kx192[32];
extern void abort (void);
int main()
{
int i = 0;
unsigned long x = 0;
for (i = 0; i < 32; ++i)
bid_Kx192[i].w[1] = i == 1;
for (i = 0; i < 32; ++i)
x += bid_Kx192[1].w[1];
if (x != 32)
abort ();
return 0;
}
>>gcc -O2 pr43783.c -fno-tree-loop-im -o pr43783.exe
>>./pr43783.exe
Aborted
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89493] [9 Regression] Stack smashing on armv7hl
Date: Tue, 19 Mar 2019 11:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-637881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:09:22 2019
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Subject: [Bug tree-optimization/89644] [8/9 Regression] false-positive -Warray-bounds on strncpy with unterminated array
Date: Tue, 19 Mar 2019 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-637880-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:09:08 2019
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Subject: [Bug middle-end/89621] [7/8/9 Regression] ICE with allocatable character and openmp
Date: Tue, 19 Mar 2019 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Component|fortran |middle-end
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>From gcc-bugs-return-637883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:09:49 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/89762] [8 Regression] Mixing optimization levels with ostream gives lto1: internal compiler error: in get_odr_type, at ipa-devirt.c:2098
Date: Tue, 19 Mar 2019 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-637882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:09:36 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
Date: Tue, 19 Mar 2019 11:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-19
CC| |jakub at gcc dot gnu.org
Component|c |tree-optimization
Target Milestone|--- |7.5
Summary|attribute((aligned(x))) |[7/8/9 Regression]
|array testcae run error |attribute((aligned(x)))
|with option |array testcase run error
|-fno-tree-loop-im |with option
| |-fno-tree-loop-im
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r238468.
>From gcc-bugs-return-637884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:10:47 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/85711] [8 regression] ICE in aarch64_classify_address, at config/aarch64/aarch64.c:5678
Date: Tue, 19 Mar 2019 11:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Known to work| |9.0
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>From gcc-bugs-return-637885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:11:13 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/88066] [7 Regression] Relative includes in bits/locale_conv.h should be prefixed
Date: Tue, 19 Mar 2019 11:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |7.5
Summary|[7/8 Regression] Relative |[7 Regression] Relative
|includes in |includes in
|bits/locale_conv.h should |bits/locale_conv.h should
|be prefixed |be prefixed
>From gcc-bugs-return-637886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:11:52 2019
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Subject: [Bug libstdc++/88740] [7/8 Regression] libstdc++ tests no longer print assertion failure messages
Date: Tue, 19 Mar 2019 11:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Known to work| |9.0
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Known to fail|9.0 |
>From gcc-bugs-return-637887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:12:59 2019
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Subject: [Bug tree-optimization/88800] [8 Regression] Spurious -Werror=array-bounds for non-taken branch
Date: Tue, 19 Mar 2019 11:12:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Known to work| |9.0
Target Milestone|--- |8.4
Known to fail|9.0 |
>From gcc-bugs-return-637888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 11:26:00 2019
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Subject: [Bug tree-optimization/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
Date: Tue, 19 Mar 2019 11:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89769
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- pr89769.c.126t.pre_ 2019-03-19 07:17:59.000000000 -0400
+++ pr89769.c.126t.pre 2019-03-19 07:18:28.000000000 -0400
@@ -120,7 +120,7 @@ main ()
goto <bb 4>;
<bb 4>:
- pretmp_5 = bid_Kx192[1].w[1];
+ pretmp_5 = bid_Kx192[1]{lb: 0 sz: 16}.w[1];
<bb 5>:
# i_24 = PHI <0(4), i_14(5)>
is the first difference and that difference is there up to *.optimized.
sizeof(bid_Kx192) is 768 bytes, so the aligned(16) attribute looks bogus, so
maybe just invalid testcase?
If one uses typedef struct __attribute__((aligned(16))) { unsigned long long
w[3]; } UINT192;
where the type then has 32 bytes in size, 16 byte alignment, rather than 24
bytes in size, then it works fine.
>From gcc-bugs-return-637889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 12:07:16 2019
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 12:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-19
CC| |jason at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
// PR c++/89767
// { dg-do compile { target c++11 } }
// { dg-options "-O2 -Wall" }
template <typename d> struct e { using g = d; };
template <typename d, template <typename> class> using h = e<d>;
template <typename d, template <typename> class i>
using j = typename h<d, i>::g;
template <typename c> int k(c);
template <typename...> class au;
struct l { template <typename c> using m = typename c::f; };
struct s : l { using af = j<au<int, int> *, m>; };
template <unsigned long, typename> struct o;
template <long p, typename c> using q = typename o<p, c>::g;
template <typename> struct r;
template <typename c> struct r<c *> { typedef c aj; };
template <typename ak, typename> struct al { typename r<ak>::aj operator*();
void operator++(); };
template <typename am, typename an, typename ao>
bool operator!=(al<am, ao>, al<an, ao>);
template <unsigned long, typename...> struct ap;
template <unsigned long aq, typename ar, typename... as>
struct ap<aq, ar, as...> : ap<1, as...> {};
template <unsigned long aq, typename ar> struct ap<aq, ar> {};
template <typename... at> class au : public ap<0, at...> {};
template <unsigned long p, typename ar, typename... as>
struct o<p, au<ar, as...>> : o<p - 1, au<as...>> {};
template <typename ar, typename... as> struct o<0, au<ar, as...>> { typedef ar
g; };
template <long p, typename ar> constexpr ar av(ap<p, ar> __t) { return ar (); }
template <int p, typename... at> constexpr q<p, au<at...>> aw(au<at...> __t) {
av<p>(__t); return q<p, au<at...>> (); }
struct bg { typedef s::af af; };
struct F { typedef al<bg::af, int> bk; bk begin(); bk end(); };
void bo() { int t = 0; F cv; for (auto bp : cv) [t, n = k(aw<1>(bp))] {}; }
Started to ICE with r261086 aka CWG 1581 implementation.
Though, that change doesn't seem to be in 8.3.
>From gcc-bugs-return-637890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 12:44:05 2019
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 12:44:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 7.x and earlier used to do:
/* The local structure or class can't use parameters of
the containing function anyway. */
if (DECL_CONTEXT (oldlocal) != current_function_decl)
{
cp_binding_level *scope = current_binding_level;
tree context = DECL_CONTEXT (oldlocal);
for (; scope; scope = scope->level_chain)
{
if (scope->kind == sk_function_parms
&& scope->this_entity == context)
break;
if (scope->kind == sk_class
&& !LAMBDA_TYPE_P (scope->this_entity))
{
nowarn = true;
break;
}
}
}
but r248123 after moving it to a different function changed it to:
/* The local structure or class can't use parameters of
the containing function anyway. */
if (DECL_CONTEXT (old) != current_function_decl)
{
for (cp_binding_level *scope = current_binding_level;
scope != old_scope; scope = scope->level_chain)
if (scope->kind == sk_class
&& !LAMBDA_TYPE_P (scope->this_entity))
return;
}
If old comes from a different function, such as in this case where there are
two nested instantiate_decl calls, one (the inner one) for av function above,
another one for aw, and I believe especially because the two functions aren't
lexically nested, it is just not possible to reach the old_scope (from the aw
function) from current_binding_level (in av function).
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Subject: [Bug c++/67070] [concepts] Concept with negation and disjunction not checked correctly
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Godeffroy Valet <godeffroy.valet at m4x dot org> changed:
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CC| |godeffroy.valet at m4x dot org
--- Comment #10 from Godeffroy Valet <godeffroy.valet at m4x dot org> ---
I confirm that I get different result using the constraint !(C<A> && C<B>) or
using (!C<A> || !C<B>), which is quite unexpected. I have "g++ (Debian
8.2.0-14)".
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nathan at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, following doesn't ICE:
template <int N>
constexpr bool foo (int x) { return x; }
template <int N>
constexpr bool bar (int x) { return foo <N> (x); }
template <int N>
constexpr bool baz (int x) { return bar <N> (x); }
auto a = baz<0> (0);
and the IDENTIFIER_BINDING of x is saved/restored through push_to_top_level and
pop_from_top_level. For the above testcase it is called too, but for some
reason the binding that is pushed to toplevel is the bo function one, not aw.
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Subject: [Bug target/89736] New test pr87532-mc.c fails on compiler not defaulting to VSX
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--- Comment #3 from kelvin at gcc dot gnu.org ---
Author: kelvin
Date: Tue Mar 19 13:44:03 2019
New Revision: 269796
URL: https://gcc.gnu.org/viewcvs?rev=269796&root=gcc&view=rev
Log:
gcc/testsuite/ChangeLog:
2019-03-19 Kelvin Nilsen <kelvin@gcc.gnu.org>
PR target/89736
* gcc.target/powerpc/pr87532-mc.c: Modify dejagnu directives to
restrict this test to vsx targets.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/pr87532-mc.c
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Subject: [Bug ada/89493] [9 Regression] Stack smashing on armv7hl
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #2 from Wilco <wilco at gcc dot gnu.org> ---
So is this an Ada unwind bug? What kind of unwinder does Ada use?
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Subject: [Bug target/89607] Missing optimization for store of multiple registers on aarch64
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |wilco at gcc dot gnu.org
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #9 from Wilco <wilco at gcc dot gnu.org> ---
Fixed in GCC9 already, so closing.
>From gcc-bugs-return-637896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 14:22:53 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 14:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89767
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, so the reason why __t PARM_DECL is not normally removed is that we reuse
IDENTIFIER_MARKED for something different, in particular:
/* If TREE_TYPE isn't set, we're still in the introducer, so check
for duplicates. */
if (!LAMBDA_EXPR_CLOSURE (lambda))
{
if (IDENTIFIER_MARKED (name))
{
pedwarn (input_location, 0,
"already captured %qD in lambda expression", id);
return NULL_TREE;
}
IDENTIFIER_MARKED (name) = true;
}
and we only clear it much later in register_capture_members:
IDENTIFIER_MARKED (DECL_NAME (field)) = false;
But, while we are parsing the lambda, we perform those push_to_top_level and
pop_from_top_level and those do use IDENTIFIER_MARKED to determine if the
identifier binding actually should be saved/restored or not.
This particular testcase I guess could be fixed by replacing:
/* Add __ to the beginning of the field name so that user code
won't find the field with name lookup. We can't just leave the name
unset because template instantiation uses the name to find
instantiated fields. */
buf = (char *) alloca (IDENTIFIER_LENGTH (id) + 3);
buf[1] = buf[0] = '_';
memcpy (buf + 2, IDENTIFIER_POINTER (id),
IDENTIFIER_LENGTH (id) + 1);
with using say ".." as prefix instead of "__", so that it is use inaccessible.
But what about following testcase?
void bar (int);
void foo () { int x = 0; auto z = [x, y = [x] { bar (x); }] { y (); bar (x); };
z (); }
clang++ -std=c++17 accepts that, g++ rejects with:
pr89767-4.C: In function ‘void foo()’:
pr89767-4.C:2:44: warning: already captured ‘x’ in lambda expression
2 | void foo () { int x = 0; auto z = [x, y = [x] { bar (x); }] { y (); bar
(x); }; z (); }
| ^
pr89767-4.C: In lambda function:
pr89767-4.C:2:54: error: ‘x’ is not captured
2 | void foo () { int x = 0; auto z = [x, y = [x] { bar (x); }] { y (); bar
(x); }; z (); }
| ^
pr89767-4.C:2:45: note: the lambda has no capture-default
2 | void foo () { int x = 0; auto z = [x, y = [x] { bar (x); }] { y (); bar
(x); }; z (); }
| ^
pr89767-4.C:2:19: note: ‘int x’ declared here
2 | void foo () { int x = 0; auto z = [x, y = [x] { bar (x); }] { y (); bar
(x); }; z (); }
| ^
Seems the use of IDENTIFIER_MARKED for this purpose has been added in r175211,
i.e. PR43831 fix. So, if we want to keep using that and not something
different, we'd need to do those ..s or something similar and save/restore it
when starting to parse a new lambda.
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Subject: [Bug ipa/89762] [8 Regression] Mixing optimization levels with ostream gives lto1: internal compiler error: in get_odr_type, at ipa-devirt.c:2098
Date: Tue, 19 Mar 2019 14:51:00 -0000
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--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
The patch can't be backported since it depends on the rest of type
simplification infrastructure that is GCC 9 only. I will take a look why
registration fails - it looks like the patch above only works around the issue
anyway.
Honza
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
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--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Tue Mar 19 14:53:43 2019
New Revision: 269799
URL: https://gcc.gnu.org/viewcvs?rev=269799&root=gcc&view=rev
Log:
PR lto/87809
PR lto/89335
* tree.c (free_lang_data_in_decl): Do not free context of C++
destrutors.
* g++.dg/lto/pr87089_0.C: New testcase.
* g++.dg/lto/pr87089_1.C: New testcase.
* g++.dg/lto/pr89335_0.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr87089_0.C
trunk/gcc/testsuite/g++.dg/lto/pr87089_1.C
trunk/gcc/testsuite/g++.dg/lto/pr89335_0.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug libstdc++/87809] [8/9 Regression] Can't create empty std::optional<std::vector<int, CustomAlloc>>
Date: Tue, 19 Mar 2019 14:54:00 -0000
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--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Tue Mar 19 14:53:43 2019
New Revision: 269799
URL: https://gcc.gnu.org/viewcvs?rev=269799&root=gcc&view=rev
Log:
PR lto/87809
PR lto/89335
* tree.c (free_lang_data_in_decl): Do not free context of C++
destrutors.
* g++.dg/lto/pr87089_0.C: New testcase.
* g++.dg/lto/pr87089_1.C: New testcase.
* g++.dg/lto/pr89335_0.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr87089_0.C
trunk/gcc/testsuite/g++.dg/lto/pr87089_1.C
trunk/gcc/testsuite/g++.dg/lto/pr89335_0.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug debug/88389] -flto -g -gsplit-dwarf is broken
Date: Tue, 19 Mar 2019 14:57:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 19 14:57:18 2019
New Revision: 269800
URL: https://gcc.gnu.org/viewcvs?rev=269800&root=gcc&view=rev
Log:
2019-03-19 Richard Biener <rguenther@suse.de>
PR debug/88389
* opts.c (finish_options): Disable -gsplit-dwarf when doing LTO.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/opts.c
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Subject: [Bug target/89736] New test pr87532-mc.c fails on compiler not defaulting to VSX
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kelvin at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from kelvin at gcc dot gnu.org ---
Patch committed to trunk.
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Subject: [Bug lto/87089] [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89335
Bug 89335 depends on bug 87089, which changed state.
Bug 87089 Summary: [9 regression] tree check: expected class 'type', have 'declaration' (namespace_decl) in type_with_linkage_p, at ipa-utils.h
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87089
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-637902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 15:11:21 2019
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Subject: [Bug lto/89335] [9 Regression] ICE with LTO -Wsuggest-final-methods: ICE during IPA pass devirt in types_same_for_odr, at ipa-devirt.c:391
Date: Tue, 19 Mar 2019 15:11:00 -0000
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-637905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 15:17:30 2019
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Subject: [Bug c++/85965] G++ gives cryptic error instead of incomplete type
Date: Tue, 19 Mar 2019 15:17:00 -0000
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Hedayat Vatankhah <hedayat.fwd at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hedayat.fwd at gmail dot com
--- Comment #2 from Hedayat Vatankhah <hedayat.fwd at gmail dot com> ---
IMHO, it is very unfortunate that we need to provide the full definition for
this to work. It has forced me to include a header file just for this error to
go away, which is not desirable. I guess it doesn't compile a completely valid
C++ code (at least, I've not found that this is a std::set requirement).
Probably, __is_invocable<> should not signal an error if it finds an incomplete
type, or it should be replaced with a construct that doesn't.
So, if the code using an incomplete type pointer for std::set is a valid C++
code, this is a sever (non-standard conforming) bug in library.
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Subject: [Bug middle-end/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
Date: Tue, 19 Mar 2019 15:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Component|tree-optimization |middle-end
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that array_ref_element_size of the [i] ref returns 24. Even when
inside just
unsigned long long foo(int i)
{
return bid_Kx192[i].w[0];
}
and RTL expansion get_inner_reference produces for offset
(sizetype) i_2(D) * 24 resulting in
foo:
.LFB0:
.cfi_startproc
movslq %edi, %rdi
leaq (%rdi,%rdi,2), %rax
movq bid_Kx192(,%rax,8), %rax
ret
Now the issue with SCCVN is that it expects TYPE_SIZE_UNIT to be exactly
dividable by TYPE_ALIGN_UNIT which it isn't (we divide 24 by 16):
/* But record element size in units of the type alignment. */
temp.op2 = TREE_OPERAND (ref, 3);
temp.align = eltype->type_common.align;
if (! temp.op2)
temp.op2 = size_binop (EXACT_DIV_EXPR, TYPE_SIZE_UNIT (eltype),
size_int (TYPE_ALIGN_UNIT (eltype)));
that is, for this ARRAY_REF there exists no valid value to put in
TREE_OPERAND (ref, 3), the aligned size tree operand used by
array_ref_element_size.
IMHO this should never happen.
The IL claims the array elements are all aligned to 16 bytes but they are
obviously not.
Joseph? Who's at fault here?
(side-note, the wide-int code treats EXACT_DIV_EXPR just like TRUNC_DIV_EXPR
reporting no error).
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Subject: [Bug ipa/89693] [9 Regression] ICE: verify_cgraph_node failed (error: edge points to wrong declaration)
Date: Tue, 19 Mar 2019 15:30:00 -0000
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
ip-cp clones thunk:
Evaluating opportunities for virtual C* C::_ZTch0_h8_N1C3TwoEv()/5.
- Creating a specialized node of virtual C* C::_ZTch0_h8_N1C3TwoEv()/5 for all
known contexts.
the new node is _ZTch0_h8_N1C3TwoEv.constprop/41.
and this makes verifier unhappy. clone_of returns false for:
(gdb) p node->debug ()
_ZTchn8_h8_N1C3TwoEv/7 (virtual C* C::_ZTchn8_h8_N1C3TwoEv()) @0x7ffff70e9ca8
Type: function definition analyzed
Visibility: externally_visible asm_written public virtual artificial
Address is taken.
References:
Referring: _ZTV1C/25 (addr)
Availability: available
Function flags: indirect_call_target
Thunk fixed offset -8 virtual value 0 indirect_offset 0 has virtual offset 0
Called by:
Calls: C* C::*.LTHUNK1()/6
$21 = void
(gdb) p node2->debug ()
_ZTch0_h8_N1C3TwoEv.constprop.0/41 (_ZTch0_h8_N1C3TwoEv.constprop)
@0x7ffff7262708
Type: function definition analyzed
Visibility: artificial
References:
Referring:
Clone of _ZTch0_h8_N1C3TwoEv/5
Availability: local
Function flags: count:10000 (estimated locally) local
Former thunk fixed offset 8 virtual value 0 indirect_offset 0 has virtual
offset 0
Called by: int main()/24 (1073741824 (estimated locally),1.00 per call)
Calls:
I think the bug here is that Martin's patch makes clone_of to look at thunk
target of _ZTchn8_h8_N1C3TwoEv, but _ZTch0_h8_N1C3TwoEv.constprop.0 actual
clone of _ZTchn8_h8_N1C3TwoEv.
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Tue, 19 Mar 2019 15:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45997
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45997&action=edit
gcc9-pr89767.patch
Untested fix.
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Subject: [Bug target/89726] [7/8 Regression] Incorrect inlined version of 'ceil' for 32bit
Date: Tue, 19 Mar 2019 16:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] |[7/8 Regression] Incorrect
|Incorrect inlined version |inlined version of 'ceil'
|of 'ceil' for 32bit |for 32bit
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug target/89378] [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c -mmsa (internal compiler error)
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 16:10:59 2019
New Revision: 269801
URL: https://gcc.gnu.org/viewcvs?rev=269801&root=gcc&view=rev
Log:
PR target/89378
* config/mips/mips.c (mips_expand_vec_cond_expr): Use gen_lowpart
instead of gen_rtx_SUBREG.
* config/mips/mips-msa.md (vec_extract<mode><unitmode>): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mips/mips-msa.md
trunk/gcc/config/mips/mips.c
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Subject: [Bug ipa/89684] [8 Regression] ICE in gsi_for_stmt, at gimple-iterator.c:613
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|gsi_for_stmt, at |gsi_for_stmt, at
|gimple-iterator.c:613 |gimple-iterator.c:613
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug target/89378] [9 regression][MIPS] FAIL: gcc.dg/vect/pr88598-3.c -mmsa (internal compiler error)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug libstdc++/85965] [8/9 Regression] G++ gives cryptic error instead of incomplete type
Date: Tue, 19 Mar 2019 16:13:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Known to work| |7.3.0
Keywords|diagnostic |rejects-valid
Last reconfirmed| |2019-03-19
Component|c++ |libstdc++
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Ever confirmed|0 |1
Summary|G++ gives cryptic error |[8/9 Regression] G++ gives
|instead of incomplete type |cryptic error instead of
| |incomplete type
Target Milestone|--- |8.4
Known to fail| |8.3.0, 9.0
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Hedayat Vatankhah from comment #2)
> Probably, __is_invocable<> should not signal an error if it finds an
> incomplete type, or it should be replaced with a construct that doesn't.
It's not possible for a type trait to give a different answer depending whether
a type is complete or not. That would violate the One-Definition Rule.
I'd forgotten about this issue because the component wasn't libstdc++. I will
remove the is_invocable checks.
>From gcc-bugs-return-637914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 16:50:48 2019
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Subject: [Bug fortran/89751] [PDT] ICE: Segmentation fault (in resolve_component)
Date: Tue, 19 Mar 2019 16:50:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=89707
--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #1)
> The test compiles with the following patch
>
> --- ../_clean/gcc/fortran/resolve.c 2019-03-18 09:41:55.000000000 +0100
> +++ gcc/fortran/resolve.c 2019-03-18 11:37:56.000000000 +0100
> @@ -13973,7 +13976,7 @@ resolve_component (gfc_component *c, gfc
> }
>
> /* Procedure pointer components: Check PASS arg. */
> - if (c->attr.proc_pointer && !c->tb->nopass && c->tb->pass_arg_num == 0
> + if (c->attr.proc_pointer && c->tb && !c->tb->nopass &&
> c->tb->pass_arg_num == 0
> && !sym->attr.vtype)
> {
> gfc_symbol* me_arg;
I don't think this is a particularly good idea. One should rather make sure
that the tb component is present, e.g. via:
diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index 749faf9fabe..86beb2c6f2f 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -3737,6 +3737,7 @@ gfc_get_pdt_instance (gfc_actual_arglist *param_list,
gfc_symbol **sym,
c2->ts = c1->ts;
c2->attr = c1->attr;
+ c2->tb = c1->tb;
/* The order of declaration of the type_specs might not be the
same as that of the components. */
However this runs into a different ICE :(
> However I have no idea if the test is valid or not.
I would say it is valid (at least I don't see why it wouldn't be).
This is very much related to PR 89707, almost a duplicate.
>From gcc-bugs-return-637915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 16:55:38 2019
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Subject: [Bug libstdc++/85965] [8/9 Regression] G++ gives cryptic error instead of incomplete type
Date: Tue, 19 Mar 2019 16:55:00 -0000
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--- Comment #4 from Paul Smith <psmith at gnu dot org> ---
Oops sorry: I guess I'm not familiar enough with the vagaries of the bug
trackers :). Thanks Jonathan!
>From gcc-bugs-return-637916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 16:59:18 2019
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Subject: [Bug target/89746] powerpc-none-eabi-gcc emits code using stfiwx to misaligned address
Date: Tue, 19 Mar 2019 16:59:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Mar 19 16:58:42 2019
New Revision: 269802
URL: https://gcc.gnu.org/viewcvs?rev=269802&root=gcc&view=rev
Log:
rs6000: Unaligned stfiwx on older CPUs (PR89746)
The "classic" PowerPCs (6xx/7xx) are not STRICT_ALIGNMENT, but their
floating point units are. This is not normally a problem, the ABIs
make everything FP aligned. The RTL patterns converting FP to integer
however get a potentially unaligned destination, and we do not want to
do an stfiwx on that on such older CPUs.
This fixes it. It does not change anything for TARGET_MFCRF targets
(POWER4 and later). It also won't change anything for strict-alignment
targets, or CPUs without hardware FP of course, or CPUs that do not
implement stfiwx (older 4xx/5xx/8xx).
It does not change the corresponding fixuns* pattern, because that can
not be enabled on any CPU that cannot handle unaligned FP well.
PR target/89746
* config/rs6000/rs6000.md (fix_trunc<mode>si2_stfiwx): If we have a
non-TARGET_MFCRF target, and the dest is memory but not 32-bit aligned,
go via a stack temporary.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.md
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Subject: [Bug libstdc++/85965] [8/9 Regression] G++ gives cryptic error instead of incomplete type
Date: Tue, 19 Mar 2019 17:01:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No problem, it's not the reporter's responsibility to categorise it correctly.
>From gcc-bugs-return-637918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 17:05:29 2019
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Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org
--- Comment #8 from janus at gcc dot gnu.org ---
(In reply to kargl from comment #7)
> Does Note 15.2 in F2018 apply?
>
> An interface body cannot be used to describe the interface of an
> internal procedure, a module procedure that is not a separate module
> procedure, or an intrinsic procedure because the interfaces of such
> procedures are already explicit. However, the name of a procedure
> can appear in a PROCEDURE statement in an interface block (15.4.3.2).
Probably yes. In any case, the test cases are rejected with an INTERFACE that
is not ABSTRACT:
Error: EXTERNAL attribute conflicts with INTRINSIC attribute at (1)
With an ABSTRACT INTERFACE, they can be rejected via:
diff --git a/gcc/fortran/symbol.c b/gcc/fortran/symbol.c
index c342d62ead1..ec753229a98 100644
--- a/gcc/fortran/symbol.c
+++ b/gcc/fortran/symbol.c
@@ -557,6 +557,7 @@ check_conflict (symbol_attribute *attr, const char *name,
locus *where)
conf (external, intrinsic);
conf (entry, intrinsic);
+ conf (abstract, intrinsic);
if ((attr->if_source == IFSRC_DECL && !attr->procedure) || attr->contained)
conf (external, subroutine);
I'm about to regtest this ...
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Subject: [Bug middle-end/89737] [9 Regression] ICE in set_even_probabilities at predict.c:893 since r267485
Date: Tue, 19 Mar 2019 17:09:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/89737] [9 Regression] ICE in set_even_probabilities at predict.c:893 since r267485
Date: Tue, 19 Mar 2019 17:09:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Mar 19 17:08:28 2019
New Revision: 269804
URL: https://gcc.gnu.org/viewcvs?rev=269804&root=gcc&view=rev
Log:
Fix set of even probabilities (PR middle-end/89737).
2019-03-19 Martin Liska <mliska@suse.cz>
PR middle-end/89737
* predict.c (combine_predictions_for_bb): Empty likely_edges and
unlikely_edges if there's an edge that belongs to both these sets.
2019-03-19 Martin Liska <mliska@suse.cz>
PR middle-end/89737
* gcc.dg/pr89737.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89737.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/predict.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/89762] [8 Regression] Mixing optimization levels with ostream gives lto1: internal compiler error: in get_odr_type, at ipa-devirt.c:2098
Date: Tue, 19 Mar 2019 17:10:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Assignee|marxin at gcc dot gnu.org |hubicka at gcc dot gnu.org
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Thank you Honza, I am assigning that to you.
>From gcc-bugs-return-637922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 17:37:32 2019
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Subject: [Bug web/89770] New: move java-related mailing lists on lists.html to the "Historical lists" section
Date: Tue, 19 Mar 2019 17:37:00 -0000
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Bug ID: 89770
Summary: move java-related mailing lists on lists.html to the
"Historical lists" section
Product: gcc
Version: 9.0
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Right now java-related mailing lists are still listed in the active mailing
lists section of lists.html, giving the impression that they are still active:
https://gcc.gnu.org/lists.html
They should be moved to the "Historical lists (archives only, no longer in
use)" section since java has been removed.
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Subject: [Bug tree-optimization/89644] [8 Regression] false-positive -Warray-bounds on strncpy with unterminated array
Date: Tue, 19 Mar 2019 17:46:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] |[8 Regression]
|false-positive |false-positive
|-Warray-bounds on strncpy |-Warray-bounds on strncpy
|with unterminated array |with unterminated array
Known to fail|9.0 |
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in GCC 9.0 via r269807.
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Subject: [Bug tree-optimization/89644] [8/9 Regression] false-positive -Warray-bounds on strncpy with unterminated array
Date: Tue, 19 Mar 2019 17:46:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Mar 19 17:45:34 2019
New Revision: 269807
URL: https://gcc.gnu.org/viewcvs?rev=269807&root=gcc&view=rev
Log:
PR tree-optimization/89644 - False-positive -Warray-bounds diagnostic on
strncpy
gcc/ChangeLog:
PR tree-optimization/89644
* tree-ssa-strlen.c (handle_builtin_stxncpy): Consider unterminated
arrays in determining sequence sizes in strncpy and stpncpy.
gcc/testsuite/ChangeLog:
PR tree-optimization/89644
* gcc.dg/Wstringop-truncation-8.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Wstringop-truncation-8.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug debug/88389] -flto -g -gsplit-dwarf is broken
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Mar 19 17:46:22 2019
New Revision: 269808
URL: https://gcc.gnu.org/viewcvs?rev=269808&root=gcc&view=rev
Log:
2019-03-19 Richard Biener <rguenther@suse.de>
PR debug/88389
* opts.c (finish_options): Disable -gsplit-dwarf when doing LTO.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/opts.c
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Subject: [Bug debug/88389] -flto -g -gsplit-dwarf is broken
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mitigated for GCC 8+ by ignoring -gsplit-dwarf with -flto.
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Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This hunk in particular broke this:
@@ -7278,7 +7306,7 @@ convert_template_argument (tree parm,
val = error_mark_node;
}
}
- else if (!dependent_template_arg_p (orig_arg)
+ else if (!type_dependent_expression_p (orig_arg)
&& !uses_template_parms (t))
/* We used to call digest_init here. However, digest_init
will report errors, which we don't want when complain
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Subject: [Bug tree-optimization/89644] [8 Regression] false-positive -Warray-bounds on strncpy with unterminated array
Date: Tue, 19 Mar 2019 18:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89644
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Mar 19 18:35:42 2019
New Revision: 269809
URL: https://gcc.gnu.org/viewcvs?rev=269809&root=gcc&view=rev
Log:
PR tree-optimization/89644 - false-positive -Warray-bounds on strncpy with
unterminated array
gcc/ChangeLog:
* tree-ssa-strlen.c (handle_builtin_stxncpy): Use full_string_p
rather than endptr as an indicator of nul-termination.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
Date: Tue, 19 Mar 2019 18:37:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-valid-code |ice-on-invalid-code
--- Comment #9 from janus at gcc dot gnu.org ---
(In reply to janus from comment #8)
> I'm about to regtest this ...
No failures observed.
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Subject: [Bug rtl-optimization/89768] [7/8/9 Regression] ICE in compare_and_jump_seq at loop-unroll.c:838
Date: Tue, 19 Mar 2019 19:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89768
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Mar 19 19:04:14 2019
New Revision: 269812
URL: https://gcc.gnu.org/viewcvs?rev=269812&root=gcc&view=rev
Log:
PR rtl-optimization/89768
* loop-unroll.c (unroll_loop_constant_iterations): Use gen_int_mode
instead of GEN_INT.
(unroll_loop_runtime_iterations): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/loop-unroll.c
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Subject: [Bug rtl-optimization/89768] [7/8 Regression] ICE in compare_and_jump_seq at loop-unroll.c:838
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|compare_and_jump_seq at |compare_and_jump_seq at
|loop-unroll.c:838 |loop-unroll.c:838
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug middle-end/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
CC| |pinskia at gcc dot gnu.org
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I had a similar report to me but I never got around to debugging it and filing
this. NOTE my report to me did not require -fno-tree-loop-im to run into the
issue.
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Subject: [Bug middle-end/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Isn't this a dup of bug 43798 ?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/89771] New: [9 regression] c-c++-common/Wrestrict.c fails starting with r269807
Date: Tue, 19 Mar 2019 20:21:00 -0000
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Bug ID: 89771
Summary: [9 regression] c-c++-common/Wrestrict.c fails starting
with r269807
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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There are a whole bunch of new failures from this test case starting with
r269807.
------------------------------------------------------------------------
r269807 | msebor | 2019-03-19 12:45:34 -0500 (Tue, 19 Mar 2019) | 14 lines
PR tree-optimization/89644 - False-positive -Warray-bounds diagnostic on
strncpy
gcc/ChangeLog:
PR tree-optimization/89644
* tree-ssa-strlen.c (handle_builtin_stxncpy): Consider unterminated
arrays in determining sequence sizes in strncpy and stpncpy.
gcc/testsuite/ChangeLog:
PR tree-optimization/89644
* gcc.dg/Wstringop-truncation-8.c: New test.
Some of the excess errors:
Excess errors:
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:811:3:
warning: 'strncpy' accessing 4 bytes at offsets 0 and 1 overlaps 2 bytes at
offset 1 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:812:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 1 overlaps 2 bytes at
offset 1 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:813:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and 1 overlaps 2 bytes at
offset 1 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:819:3:
warning: 'strncpy' accessing 4 bytes at offsets 0 and 2 overlaps 1 byte at
offset 2 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:820:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 1 byte at
offset 2 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:827:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 2 bytes at
offset 2 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:828:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and 2 overlaps 2 bytes at
offset 2 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:867:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [1, 5] may overlap up to
3 bytes at offset [3, 1] [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:875:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [2, 5] may overlap up to
2 bytes at offset [3, 2] [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:876:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [2, 5] may overlap up to
2 bytes at offset [3, 2] [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:884:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [3, 5] may overlap 1 byte
at offset 3 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:885:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [3, 5] may overlap 1 byte
at offset 3 [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:893:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [4, 5] may overlap up to
0 bytes at offset [9223372036854775807, -9223372036854775808] [-Wrestrict]
/home/seurer/gcc/gcc-trunk/gcc/testsuite/c-c++-common/Wrestrict.c:894:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [4, 5] may overlap up to
0 bytes at offset [9223372036854775807, -9223372036854775808] [-Wrestrict]
diff between r269806's and r267807's output for one run:
131,133c131,133
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:811:3:
warning: 'strncpy' accessing 4 bytes at offsets 0 and 1 overlaps 3 bytes at
offset 1 [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:812:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 1 overlaps 3 bytes at
offset 1 [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:813:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and 1 overlaps 3 bytes at
offset 1 [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:811:3: warning: 'strncpy' accessing 4 bytes at offsets 0 and 1 overlaps 2 bytes at offset 1 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:812:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and 1 overlaps 2 bytes at offset 1 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:813:3: warning: 'strncpy' accessing 6 bytes at offsets 0 and 1 overlaps 2 bytes at offset 1 [-Wrestrict]
135,136c135,136
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:819:3:
warning: 'strncpy' accessing 4 bytes at offsets 0 and 2 overlaps 2 bytes at
offset 2 [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:820:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 2 bytes at
offset 2 [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:819:3: warning: 'strncpy' accessing 4 bytes at offsets 0 and 2 overlaps 1 byte at offset 2 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:820:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 1 byte at offset 2 [-Wrestrict]
139,140c139,140
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:827:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 3 bytes at
offset 2 [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:828:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and 2 overlaps 3 bytes at
offset 2 [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:827:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and 2 overlaps 2 bytes at offset 2 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:828:3: warning: 'strncpy' accessing 6 bytes at offsets 0 and 2 overlaps 2 bytes at offset 2 [-Wrestrict]
148c148
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:867:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [1, 5] may overlap up to
4 bytes at offset [4, 1] [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:867:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and [1, 5] may overlap up to 3 bytes at offset [3, 1] [-Wrestrict]
151,152c151,152
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:875:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [2, 5] may overlap up to
3 bytes at offset [4, 2] [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:876:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [2, 5] may overlap up to
3 bytes at offset [4, 2] [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:875:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and [2, 5] may overlap up to 2 bytes at offset [3, 2] [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:876:3: warning: 'strncpy' accessing 6 bytes at offsets 0 and [2, 5] may overlap up to 2 bytes at offset [3, 2] [-Wrestrict]
154,157c154,157
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:884:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [3, 5] may overlap up to
2 bytes at offset [4, 3] [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:885:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [3, 5] may overlap up to
2 bytes at offset [4, 3] [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:893:3:
warning: 'strncpy' accessing 5 bytes at offsets 0 and [4, 5] may overlap 1 byte
at offset 4 [-Wrestrict]
< /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:894:3:
warning: 'strncpy' accessing 6 bytes at offsets 0 and [4, 5] may overlap 1 byte
at offset 4 [-Wrestrict]
---
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:884:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and [3, 5] may overlap 1 byte at offset 3 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:885:3: warning: 'strncpy' accessing 6 bytes at offsets 0 and [3, 5] may overlap 1 byte at offset 3 [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:893:3: warning: 'strncpy' accessing 5 bytes at offsets 0 and [4, 5] may overlap up to 0 bytes at offset [9223372036854775807, -9223372036854775808] [-Wrestrict]
> /home/seurer/gcc/gcc-test/gcc/testsuite/c-c++-common/Wrestrict.c:894:3: warning: 'strncpy' accessing 6 bytes at offsets 0 and [4, 5] may overlap up to 0 bytes at offset [9223372036854775807, -9223372036854775808] [-Wrestrict]
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
811)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
812)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
813)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
819)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
820)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
827)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
828)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
867)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
875)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
876)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
884)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
885)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
893)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat strncpy (test for warnings, line
894)
FAIL: c-c++-common/Wrestrict.c -Wc++-compat (test for excess errors)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
811)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
812)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
813)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
819)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
820)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
827)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
828)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
867)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
875)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
876)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
884)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
885)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
893)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 strncpy (test for warnings, line
894)
FAIL: c-c++-common/Wrestrict.c -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
811)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
812)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
813)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
819)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
820)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
827)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
828)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
867)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
875)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
876)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
884)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
885)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
893)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 strncpy (test for warnings, line
894)
FAIL: c-c++-common/Wrestrict.c -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
811)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
812)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
813)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
819)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
820)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
827)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
828)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
867)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
875)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
876)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
884)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
885)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
893)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 strncpy (test for warnings, line
894)
FAIL: c-c++-common/Wrestrict.c -std=gnu++17 (test for excess errors)
>From gcc-bugs-return-637935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 21:33:19 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
Date: Tue, 19 Mar 2019 21:33:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The fix for 77656 caused us to call convert_nontype_argument even for
value-dependent arguments, to perform the conversion in order to avoid a bogus
warning.
In this case, the argument is Pod{N}. The call to
build_converted_constant_expr in convert_nontype_argument produces
Pod::operator Enum(&{N}). It doesn't crash because we're in a template and
build_address no longer crashed on CONSTRUCTORs in a template.
Then when instantiating function foo we substitute its argument: &{N}. So
we're in tsubst_copy_and_build/ADDR_EXPR. The call to
tsubst_non_call_postfix_expression turns {N} into TARGET_EXPR <D.2329,
{.val=2}>.
Then build_x_unary_op is supposed to put the ADDR_EXPR back. It calls
cp_build_addr_expr_strict. But it's *strict*, so the prvalue of class type
TARGET_EXPR <D.2329, {.val=2}> isn't allowed -> error.
>From gcc-bugs-return-637936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 22:08:04 2019
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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Tue, 19 Mar 2019 22:08:00 -0000
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anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gcc dot gnu.org
--- Comment #7 from anlauf at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #3)
In class.c we have:
Breakpoint 1, find_intrinsic_vtab (ts=0x2474758)
at ../../trunk/gcc/fortran/class.c:2715
2715 gfc_element_size (e, &e_size);
(gdb) p e->ts.type
$8 = BT_PROCEDURE
This case is something that is generally not handled.
What is the storage size of procedure (pointers)?
This needs to be added in gfc_element_size or gfc_typenode_for_spec,
and the call in class.c needs to be adjusted accordingly.
>From gcc-bugs-return-637937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 22:18:12 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Tue, 19 Mar 2019 22:18:00 -0000
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--- Comment #8 from anlauf at gcc dot gnu.org ---
(In reply to anlauf from comment #7)
The following patch fixes the ICE:
Index: trans-types.c
===================================================================
--- trans-types.c (revision 269779)
+++ trans-types.c (working copy)
@@ -1194,6 +1194,9 @@
basetype = pfunc_type_node;
}
break;
+ case BT_PROCEDURE:
+ basetype = pfunc_type_node;
+ break;
default:
gcc_unreachable ();
}
Index: target-memory.c
===================================================================
--- target-memory.c (revision 269779)
+++ target-memory.c (working copy)
@@ -120,6 +120,7 @@
case BT_CLASS:
case BT_VOID:
case BT_ASSUMED:
+ case BT_PROCEDURE:
{
/* Determine type size without clobbering the typespec for ISO C
binding types. */
However, I do not have a working code sample to run.
>From gcc-bugs-return-637938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 22:24:52 2019
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Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
Date: Tue, 19 Mar 2019 22:24:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
It's _strict since https://gcc.gnu.org/ml/gcc-patches/2010-09/msg02144.html --
that was a desirable change.
>From gcc-bugs-return-637940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Mar 19 22:29:32 2019
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Subject: [Bug fortran/82173] [meta-bug] Parameterized derived type errors
Date: Tue, 19 Mar 2019 22:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82173
Bug 82173 depends on bug 89601, which changed state.
Bug 89601 Summary: [8 Regression] [PDT] ICE: Segmentation fault (in resolve_component)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89601
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/89601] [8 Regression] [PDT] ICE: Segmentation fault (in resolve_component)
Date: Tue, 19 Mar 2019 22:29:00 -0000
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janus at gcc dot gnu.org changed:
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--- Comment #7 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #6)
> Is this fixed or is there any plan to back port r269658?
Fixed on trunk only up to now. I don't think it's worth backporting. Closing
this PR as fixed.
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Subject: [Bug target/89411] RISC-V backend will generate wrong instruction for longlong type like lw a3,-2048(a5)
Date: Tue, 19 Mar 2019 22:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89411
--- Comment #5 from Jim Wilson <wilson at gcc dot gnu.org> ---
Author: wilson
Date: Tue Mar 19 22:33:34 2019
New Revision: 269813
URL: https://gcc.gnu.org/viewcvs?rev=269813&root=gcc&view=rev
Log:
RISC-V: Fix %lo overflow with BLKmode references.
gcc/
PR target/89411
* config/riscv/riscv.c (riscv_valid_lo_sum_p): New arg x. New locals
align, size, offset. Use them to handle a BLKmode reference. Update
comment.
(riscv_classify_address): Pass info->offset to riscv_valid_lo_sum_p.
gcc/testsuite/
PR target/89411
* gcc.target/riscv/losum-overflow.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/riscv/losum-overflow.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/riscv/riscv.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89411] RISC-V backend will generate wrong instruction for longlong type like lw a3,-2048(a5)
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Jim Wilson <wilson at gcc dot gnu.org> changed:
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--- Comment #6 from Jim Wilson <wilson at gcc dot gnu.org> ---
Fixed, with testcase added.
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Subject: [Bug tree-optimization/89688] [9 Regression] -Wstringop-overflow confused by const 2D array of char
Date: Tue, 19 Mar 2019 22:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89688
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Mar 19 22:43:10 2019
New Revision: 269814
URL: https://gcc.gnu.org/viewcvs?rev=269814&root=gcc&view=rev
Log:
PR tree-optimization/89688 - -Wstringop-overflow confused by const 2D array of
char
gcc/c/ChangeLog:
PR tree-optimization/89688
* c-decl.c (finish_decl): Call braced_lists_to_string for more
kinds of initializers.
gcc/c-family/ChangeLog:
PR tree-optimization/89688
* c-common.c (braced_list_to_string): Make static.
(braced_lists_to_strings): Define new function.
* c-common.h (braced_list_to_string): Remove.
(braced_lists_to_strings): Declare.
gcc/cp/ChangeLog:
PR tree-optimization/89688
* typeck2.c (store_init_value): Call braced_lists_to_string for more
kinds of initializers.
gcc/testsuite/ChangeLog:
PR tree-optimization/89688
* gcc.dg/strlenopt-61.c: New test.
* g++.dg/warn/Wstringop-overflow-2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wstringop-overflow-2.C
trunk/gcc/testsuite/gcc.dg/strlenopt-61.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/83819] [meta-bug] missing strlen optimizations
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Bug 83819 depends on bug 89688, which changed state.
Bug 89688 Summary: [9 Regression] -Wstringop-overflow confused by const 2D array of char
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89688
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/89688] [9 Regression] -Wstringop-overflow confused by const 2D array of char
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch committed in r269814.
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Subject: [Bug testsuite/89771] [9 regression] c-c++-common/Wrestrict.c fails starting with r269807
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
r269809 should clear up the failures. See also:
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg00944.html
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Subject: [Bug tree-optimization/89772] New: memchr for a character not in constant nul-padded string not folded
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89772
Bug ID: 89772
Summary: memchr for a character not in constant nul-padded
string not folded
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
Only the first of the two calls to memchr below is folded, the second one
isn't. Looks like it's simply because fold_const_call considers only string
lengths (it calls c_getstr()) and doesn't take advantage of the knowledge that
all the other characters past the terminating NUL are also NUL.
If fold_const_call either called string_constant instead, or if c_getstr()
exposed the size of the constant string in addition to its length, it would be
able to fold the second call as well.
$ cat u.c && gcc -O2 -S -Wall -Wextra -Wpedantic
-fdump-tree-optimized=/dev/stdout u.c
const char a[5] = "123";
void f3 (void)
{
if (!__builtin_memchr (a, '3', sizeof a)) // folded to false
__builtin_abort ();
}
void f7 (void)
{
if (__builtin_memchr (a, '7', sizeof a)) // not folded
__builtin_abort ();
}
;; Function f3 (f3, funcdef_no=0, decl_uid=1907, cgraph_uid=1, symbol_order=1)
f3 ()
{
<bb 2> [local count: 1073741824]:
return;
}
;; Function f7 (f7, funcdef_no=1, decl_uid=1910, cgraph_uid=2, symbol_order=2)
f7 ()
{
void * _1;
<bb 2> [local count: 1073741824]:
_1 = __builtin_memchr (&a, 55, 5);
if (_1 != 0B)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073741824]:
return;
}
>From gcc-bugs-return-637948-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:10:01 2019
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Subject: [Bug middle-end/89769] [7/8/9 Regression] attribute((aligned(x))) array testcase run error with option -fno-tree-loop-im
Date: Wed, 20 Mar 2019 08:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Indeed.
*** This bug has been marked as a duplicate of bug 43798 ***
>From gcc-bugs-return-637949-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:10:02 2019
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Subject: [Bug c/43798] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 08:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xuzheliang at huawei dot com
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89769 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-637950-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:11:59 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 08:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-20
Target Milestone|--- |8.4
Summary|attribute((aligned(x))) not |[8/9 Regression]
|honored for array element |attribute((aligned(x))) not
|types? |honored for array element
| |types?
Ever confirmed|0 |1
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Manifests itself as regression now (see duplicate). If C doesn't allow padding
between elements of an array then the C frontend has to adjust the element type
when building the array type. At least we cannot leave the bogus alignment in
place.
>From gcc-bugs-return-637951-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:13:41 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 08:13:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Joseph, can we reject the testcase?
OTOH a 16 aligned struct UINT192 should have size 32 (but appearantly it does
not when using a typedef because of sharing of TYPE_FIELDs and friends?)
>From gcc-bugs-return-637953-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:23:42 2019
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Subject: [Bug testsuite/89771] [9 regression] c-c++-common/Wrestrict.c fails starting with r269807
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-637952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 08:23:33 2019
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Subject: [Bug tree-optimization/89772] memchr for a character not in constant nul-padded string not folded
Date: Wed, 20 Mar 2019 08:23:00 -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> ---
I think it tries to avoid folding out-of-bound accesses a bit too
conservatively.
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, since r105095 - https://gcc.gnu.org/ml/gcc-patches/2005-10/msg00252.html
we reject a subset of this (when the element size is smaller than the element
alignment).
So, either we extend that to also when the element size is not divisible by the
element size, or silently replace in layout_type? the element type with a
variant
thereof that has smaller alignment.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 08:43:00 -0000
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--- Comment #9 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 20 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43798
>
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jakub at gcc dot gnu.org
>
> --- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Note, since r105095 - https://gcc.gnu.org/ml/gcc-patches/2005-10/msg00252.html
> we reject a subset of this (when the element size is smaller than the element
> alignment).
> So, either we extend that to also when the element size is not divisible by the
> element size, or silently replace in layout_type? the element type with a
> variant
> thereof that has smaller alignment.
I think we should reject since if the user writes it that way he
doesn't expect that
UINT192 *ptr = &bid_Kx192[i];
converts between pointed-to types of different alignment.
That is, if we fix up we IMHO need to pad. And I do wonder why
sizeof (UINT192) is 24 and not 32 (is it?).
>From gcc-bugs-return-637956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 09:03:03 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 09:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43798
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We can't pad, that is against the ABI.
I think we've discussed this many times in the past, the fact is that people do
use this kind of mess when they want to say that the whole array has certain
alignment or when they are just careless, I think it is too late now for GCC9
to start rejecting it without an analysis how much code would be affected, not
to mention that it is not backportable.
The following patch does the adjustment and fixes the testcase:
--- gcc/stor-layout.c.jj 2019-01-01 12:37:17.296972670 +0100
+++ gcc/stor-layout.c 2019-03-20 09:56:15.576407411 +0100
@@ -2550,10 +2550,27 @@ layout_type (tree type)
/* If TYPE_SIZE_UNIT overflowed, then it is certainly larger than
TYPE_ALIGN_UNIT. */
&& !TREE_OVERFLOW (TYPE_SIZE_UNIT (element))
- && !integer_zerop (TYPE_SIZE_UNIT (element))
- && compare_tree_int (TYPE_SIZE_UNIT (element),
- TYPE_ALIGN_UNIT (element)) < 0)
- error ("alignment of array elements is greater than element size");
+ && !integer_zerop (TYPE_SIZE_UNIT (element)))
+ {
+ if (compare_tree_int (TYPE_SIZE_UNIT (element),
+ TYPE_ALIGN_UNIT (element)) < 0)
+ error ("alignment of array elements is greater than "
+ "element size");
+ if (TYPE_ALIGN_UNIT (element))
+ {
+ unsigned align = (TREE_INT_CST_LOW (TYPE_SIZE_UNIT (element))
+ & (TYPE_ALIGN_UNIT (element) - 1));
+ align = least_bit_hwi (align);
+ if (align && align != TYPE_ALIGN_UNIT (element))
+ {
+ element = build_variant_type_copy (element);
+ SET_TYPE_ALIGN (element, align * BITS_PER_UNIT);
+ TYPE_USER_ALIGN (element) = 1;
+ TREE_TYPE (type) = element;
+ TYPE_USER_ALIGN (type) = 1;
+ }
+ }
+ }
break;
}
but I haven't done any testing on it beyond that.
Perhaps for GCC 9 we could warn when we do this and depending on the amount of
warnings consider rejecting it later on if it doesn't affect significant amount
of code?
>From gcc-bugs-return-637957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 09:05:17 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 09:05:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe the TREE_OVERFLOW check should be done only for the error, even with
TREE_OVERFLOW we should be able to check the low bits of the size.
>From gcc-bugs-return-637958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 09:34:20 2019
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 09:34:00 -0000
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--- Comment #12 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 20 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43798
>
> --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> We can't pad, that is against the ABI.
> I think we've discussed this many times in the past, the fact is that people do
> use this kind of mess when they want to say that the whole array has certain
> alignment or when they are just careless, I think it is too late now for GCC9
> to start rejecting it without an analysis how much code would be affected, not
> to mention that it is not backportable.
>
> The following patch does the adjustment and fixes the testcase:
> --- gcc/stor-layout.c.jj 2019-01-01 12:37:17.296972670 +0100
> +++ gcc/stor-layout.c 2019-03-20 09:56:15.576407411 +0100
> @@ -2550,10 +2550,27 @@ layout_type (tree type)
> /* If TYPE_SIZE_UNIT overflowed, then it is certainly larger than
> TYPE_ALIGN_UNIT. */
> && !TREE_OVERFLOW (TYPE_SIZE_UNIT (element))
> - && !integer_zerop (TYPE_SIZE_UNIT (element))
> - && compare_tree_int (TYPE_SIZE_UNIT (element),
> - TYPE_ALIGN_UNIT (element)) < 0)
I believe this check was just bogus since size < align catches just
very few cases of small objects. Thus the case in question now isn't
really different from the intent of the above. Shouldn't we just
change this to
&& !multiple_of_p (sizetype, TYPE_SIZE_UNIT (element),
TYPE_ALIGN_UNIT (element))
and adjust the error message accordingly?
> - error ("alignment of array elements is greater than element size");
> + && !integer_zerop (TYPE_SIZE_UNIT (element)))
> + {
> + if (compare_tree_int (TYPE_SIZE_UNIT (element),
> + TYPE_ALIGN_UNIT (element)) < 0)
> + error ("alignment of array elements is greater than "
> + "element size");
> + if (TYPE_ALIGN_UNIT (element))
> + {
> + unsigned align = (TREE_INT_CST_LOW (TYPE_SIZE_UNIT (element))
> + & (TYPE_ALIGN_UNIT (element) - 1));
> + align = least_bit_hwi (align);
> + if (align && align != TYPE_ALIGN_UNIT (element))
> + {
> + element = build_variant_type_copy (element);
> + SET_TYPE_ALIGN (element, align * BITS_PER_UNIT);
> + TYPE_USER_ALIGN (element) = 1;
> + TREE_TYPE (type) = element;
> + TYPE_USER_ALIGN (type) = 1;
> + }
> + }
> + }
> break;
> }
>
> but I haven't done any testing on it beyond that.
> Perhaps for GCC 9 we could warn when we do this and depending on the amount of
> warnings consider rejecting it later on if it doesn't affect significant amount
> of code?
>
>
>From gcc-bugs-return-637959-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 09:53:26 2019
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Subject: [Bug fortran/89773] New: Fortran OpenACC 'routine' directive refuses procedures with implicit EXTERNAL attribute
Date: Wed, 20 Mar 2019 09:53:00 -0000
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Bug ID: 89773
Summary: Fortran OpenACC 'routine' directive refuses procedures
with implicit EXTERNAL attribute
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: openacc
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... as mentioned in
<http://mid.mail-archive.com/9e1f3bc5-2da8-1aae-67b0-bf478a53dd2a@codesourcery.com>.
>From gcc-bugs-return-637960-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 10:06:22 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 10:06:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See above, I'm afraid that would break a lot of code in the wild. We've been
accepting it for way too long and handling the way those users expect (i.e.
that the whole array is 16 byte aligned), clang accepts it too that way
(without any warnings), so does icc.
>From gcc-bugs-return-637961-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 10:08:47 2019
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Subject: [Bug fortran/89773] Fortran OpenACC 'routine' directive refuses procedures with implicit EXTERNAL attribute
Date: Wed, 20 Mar 2019 10:08:00 -0000
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-20
Ever confirmed|0 |1
>From gcc-bugs-return-637962-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 10:18:02 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 10:18:00 -0000
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Acjusted patch that uses build_aligned_type instead of doing it on its own.
--- gcc/stor-layout.c.jj 2019-01-01 12:37:17.296972670 +0100
+++ gcc/stor-layout.c 2019-03-20 11:15:12.166935041 +0100
@@ -2547,13 +2547,32 @@ layout_type (tree type)
large as the element alignment. */
if (TYPE_SIZE_UNIT (element)
&& TREE_CODE (TYPE_SIZE_UNIT (element)) == INTEGER_CST
+ && !integer_zerop (TYPE_SIZE_UNIT (element)))
+ {
/* If TYPE_SIZE_UNIT overflowed, then it is certainly larger than
TYPE_ALIGN_UNIT. */
- && !TREE_OVERFLOW (TYPE_SIZE_UNIT (element))
- && !integer_zerop (TYPE_SIZE_UNIT (element))
- && compare_tree_int (TYPE_SIZE_UNIT (element),
- TYPE_ALIGN_UNIT (element)) < 0)
- error ("alignment of array elements is greater than element size");
+ if (!TREE_OVERFLOW (TYPE_SIZE_UNIT (element))
+ && compare_tree_int (TYPE_SIZE_UNIT (element),
+ TYPE_ALIGN_UNIT (element)) < 0)
+ error ("alignment of array elements is greater than "
+ "element size");
+ if (TYPE_ALIGN_UNIT (element))
+ {
+ unsigned align = (TREE_INT_CST_LOW (TYPE_SIZE_UNIT (element))
+ & (TYPE_ALIGN_UNIT (element) - 1));
+ align = least_bit_hwi (align);
+ if (align && align != TYPE_ALIGN_UNIT (element))
+ {
+ /* If the size of the element is not a multiple of
+ alignment, lower the alignment of the elements of the
+ array, but keep the whole array alignment. */
+ element
+ = build_aligned_type (element, align * BITS_PER_UNIT);
+ TREE_TYPE (type) = element;
+ TYPE_USER_ALIGN (type) = 1;
+ }
+ }
+ }
break;
}
>From gcc-bugs-return-637963-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 10:39:21 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Wed, 20 Mar 2019 10:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89692
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The type that is not processed by free_lang_data_in_type is created with:
#1 0x000000000180f42c in copy_node (node=<record_type 0x7fffea94c9d8 ln>) at
../../gcc/tree.c:1183
#2 0x000000000182555e in build_distinct_type_copy (type=<record_type
0x7fffea94c9d8 ln>) at ../../gcc/tree.c:6532
#3 0x00000000018256d7 in build_variant_type_copy (type=<record_type
0x7fffea94c9d8 ln>) at ../../gcc/tree.c:6566
#4 0x00000000018254c4 in build_aligned_type (type=<record_type 0x7fffea94c9d8
ln>, align=8) at ../../gcc/tree.c:6517
#5 0x0000000000fa6007 in gimple_fold_builtin_memory_op (gsi=0x7fffffffcfb0,
dest=<addr_expr 0x7fffea95a4e0>, src=<addr_expr 0x7fffea95a580>,
endp=0) at ../../gcc/gimple-fold.c:1010
#6 0x0000000000fad8c7 in gimple_fold_builtin (gsi=0x7fffffffcfb0) at
../../gcc/gimple-fold.c:3851
#7 0x0000000000fafc2b in gimple_fold_call (gsi=0x7fffffffcfb0, inplace=false)
at ../../gcc/gimple-fold.c:4357
#8 0x0000000000fb2b4d in fold_stmt_1 (gsi=0x7fffffffcfb0, inplace=false,
valueize=0xfb326c <no_follow_ssa_edges(tree_node*)>)
at ../../gcc/gimple-fold.c:5022
#9 0x0000000000fb32f4 in fold_stmt (gsi=0x7fffffffcfb0) at
../../gcc/gimple-fold.c:5177
#10 0x000000000210bee5 in lower_stmt (gsi=0x7fffffffcfb0, data=0x7fffffffd150)
at ../../gcc/gimple-low.c:387
We do free_lang_data_in_type the 0x7fffea94c9d8 variant.
Note, the gimple_fold_builtin_memory_op code actually doesn't insert that type
into the IL at all, it builds a MEM_REF with that type, but later throws it
away and builds a different MEM_REF with a different type (instead of struct ln
with 8-bit alignment a char array of the right size).
Now, even if it would keep it in the IL, it could be in some statement that is
optimized away before fld, or it could be build_aligned_type called from the FE
and again not kept in the IL in any way.
Then we free lang data and then comes SRA and calls build_aligned_type
(0x7fffea94c9d8, 8) - that is again the original type that got through fld, but
build_aligned_type looks through type variants and finds ah, we have one
aligned variant here already and returns that.
So, this is not a SRA bug, but free_lang_data, it needs to
free_lang_data_in_type also all type variants of all types it is processing,
otherwise any time after free_lang_data anything uses any of the build*type
tree.c function a non-free_lang_data_in_type processed type can reappear in the
IL.
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Subject: [Bug libgcc/60790] libatomic convenience library selects IFUNC implementation before obtaining cpu info.
Date: Wed, 20 Mar 2019 10:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60790
--- Comment #14 from Florian Weimer <fw at gcc dot gnu.org> ---
Author: fw
Date: Wed Mar 20 10:42:35 2019
New Revision: 269818
URL: https://gcc.gnu.org/viewcvs?rev=269818&root=gcc&view=rev
Log:
PR libgcc/60790: x86: Do not assume ELF constructors run before IFUNC resolvers
* config/x86/host-config.h (libat_feat1_ecx, libat_feat1_edx):
Remove declarations.
(__libat_feat1, __libat_feat1_init): Declare.
(FEAT1_REGISTER): Define.
(load_feat1): New function.
(IFUNC_COND_1): Adjust.
* config/x86/init.c (libat_feat1_ecx, libat_feat1_edx)
(init_cpuid): Remove definitions.
(__libat_feat1): New variable.
(__libat_feat1_init): New function.
Modified:
branches/gcc-8-branch/ (props changed)
branches/gcc-8-branch/libatomic/ChangeLog
branches/gcc-8-branch/libatomic/config/x86/host-config.h
branches/gcc-8-branch/libatomic/config/x86/init.c
Propchange: branches/gcc-8-branch/
('svn:mergeinfo' modified)
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Subject: [Bug libgcc/60790] libatomic convenience library selects IFUNC implementation before obtaining cpu info.
Date: Wed, 20 Mar 2019 10:44:00 -0000
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Florian Weimer <fw at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #15 from Florian Weimer <fw at gcc dot gnu.org> ---
I do not plan to backport this further, so marking this as fixed.
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Wed, 20 Mar 2019 10:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89692
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There is:
fld_worklist_push (TYPE_MAIN_VARIANT (t), fld);
/* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
do not and want not to reach unused variants this way. */
I believe this is the bug, we do want to walk it even if it is not streamed.
Walking it should be just more work during fld, true, but I don't see what harm
it would do. Honza?
--- gcc/tree.c.jj 2019-03-19 17:10:04.248125906 +0100
+++ gcc/tree.c 2019-03-20 11:50:19.166755015 +0100
@@ -5875,8 +5875,7 @@ find_decls_types_r (tree *tp, int *ws, v
if (!RECORD_OR_UNION_TYPE_P (t))
fld_worklist_push (TYPE_MAX_VALUE_RAW (t), fld);
fld_worklist_push (TYPE_MAIN_VARIANT (t), fld);
- /* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
- do not and want not to reach unused variants this way. */
+ fld_worklist_push (TYPE_NEXT_VARIANT (t), fld);
if (TYPE_CONTEXT (t))
{
tree ctx = TYPE_CONTEXT (t);
certainly fixes the ICE.
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Wed, 20 Mar 2019 11:10:00 -0000
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--- Comment #6 from Jan Hubicka <hubicka at ucw dot cz> ---
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89692
>
> --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> There is:
> fld_worklist_push (TYPE_MAIN_VARIANT (t), fld);
> /* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
> do not and want not to reach unused variants this way. */
> I believe this is the bug, we do want to walk it even if it is not streamed.
> Walking it should be just more work during fld, true, but I don't see what harm
> it would do. Honza?
>
> --- gcc/tree.c.jj 2019-03-19 17:10:04.248125906 +0100
> +++ gcc/tree.c 2019-03-20 11:50:19.166755015 +0100
> @@ -5875,8 +5875,7 @@ find_decls_types_r (tree *tp, int *ws, v
> if (!RECORD_OR_UNION_TYPE_P (t))
> fld_worklist_push (TYPE_MAX_VALUE_RAW (t), fld);
> fld_worklist_push (TYPE_MAIN_VARIANT (t), fld);
> - /* Do not walk TYPE_NEXT_VARIANT. We do not stream it and thus
> - do not and want not to reach unused variants this way. */
> + fld_worklist_push (TYPE_NEXT_VARIANT (t), fld);
> if (TYPE_CONTEXT (t))
> {
> tree ctx = TYPE_CONTEXT (t);
>
> certainly fixes the ICE.
Yes, I tried this some time ago but it ICEs with chekcing enabled
because C++ FE produces types that do not pass verify_type and puts them
into variant lists. Also Richi did not like reaching more types than
necessary. For this reason I went for a variant of patch that prunes the
lists but Richi did not like it either. I will check if I still
reproduce the ICE.
https://patchwork.ozlabs.org/patch/967595/
I do not fully follow Richi's concern about duplicate types: the types
not visible by fld should be invisitable to middle-end and thus not used
later.
Honza
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Subject: [Bug target/89752] [8/9 Regression] ICE in emit_move_insn, at expr.c:3723
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 20 11:26:42 2019
New Revision: 269819
URL: https://gcc.gnu.org/viewcvs?rev=269819&root=gcc&view=rev
Log:
PR target/89752
* lra-constraints.c (process_alt_operands) <reg>: For BLKmode, don't
update this_alternative nor this_alternative_set.
* g++.target/aarch64/aarch64.exp: New file.
* g++.target/aarch64/pr89752.C: New test.
Added:
trunk/gcc/testsuite/g++.target/aarch64/aarch64.exp
trunk/gcc/testsuite/g++.target/aarch64/pr89752.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89752] [8 Regression] ICE in emit_move_insn, at expr.c:3723
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|needs-reduction |
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|emit_move_insn, at |emit_move_insn, at
|expr.c:3723 |expr.c:3723
>From gcc-bugs-return-637970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 11:33:13 2019
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Subject: [Bug rtl-optimization/86928] ICE in compute_live, at sel-sched.c:3097
Date: Wed, 20 Mar 2019 11:33:00 -0000
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Andrey Belevantsev <abel at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |abel at gcc dot gnu.org,
| |amonakov at gcc dot gnu.org
--- Comment #2 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
We're not somehow updating liveness information at all times when we change
control flow. E.g. we do update liveness in sel_split_edge, but not in
sel_redirect_edge_and_branch{,force} hooks, when we're making a new jump and
resetting liveness on the bb it ended up in. This leaves us with the unknown
lv set, and later breaks when we're computing liveness from the other region
and come to this block, as we're assuming that other regions always have
correct liveness.
Fixed with the below patch but I'm not completely sure it fully makes sense --
Alexander, thoughts?
diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
index 85ff5bd3eb4..c399c1117a3 100644
--- a/gcc/sel-sched-ir.c
+++ b/gcc/sel-sched-ir.c
@@ -5642,6 +5642,8 @@ sel_redirect_edge_and_branch_force (edge e, basic_block
to)
recompute_dominator (CDI_DOMINATORS, to));
set_immediate_dominator (CDI_DOMINATORS, orig_dest,
recompute_dominator (CDI_DOMINATORS, orig_dest));
+ if (jump == sel_bb_head (BLOCK_FOR_INSN (jump)))
+ compute_live (jump);
}
/* A wrapper for redirect_edge_and_branch. Return TRUE if blocks connected by
@@ -5702,6 +5704,8 @@ sel_redirect_edge_and_branch (edge e, basic_block to)
set_immediate_dominator (CDI_DOMINATORS, orig_dest,
recompute_dominator (CDI_DOMINATORS,
orig_dest));
}
+ if (jump == sel_bb_head (BLOCK_FOR_INSN (jump)))
+ compute_live (jump);
return recompute_toporder_p;
}
>From gcc-bugs-return-637971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 11:54:28 2019
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm. I think we should prune the variant list down to what is actually used
but to fix the GC issue I was raising make sure the pruned variants appear
as main variants (thus NULL their TYPE_NEXT_VARIANT and set TYPE_MAIN_VARIANT
to themselves).
>From gcc-bugs-return-637972-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 12:06:55 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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Kwok Yeung <kcy at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kcy at codesourcery dot com
--- Comment #9 from Kwok Yeung <kcy at codesourcery dot com> ---
(In reply to G. Steinmetz from comment #3)
The test case can be reduced even further:
module m
contains
function f() result(z)
class(*), pointer :: z
end
recursive subroutine s(q)
procedure(f) :: q
call s(q)
end
end
>From gcc-bugs-return-637973-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 12:08:42 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't we change that way e.g. TYPE_CANONICAL of some type?
>From gcc-bugs-return-637974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 12:24:49 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With the patch in comment 8 all the tests compile and the original test in
comment 0 gives ta runtime
gfc::bank testing status: 0 (PASSED): Performance:
3532045.4736842103
gfc::vector testing status: 0 (PASSED): Performance:
2515463.5218254919
gfc::list testing status: 0 (PASSED): Performance:
2515463.5218254919
gfc::tree testing status: 0 (PASSED): Performance:
1045525.1575901519
gfc::dictionary testing status: 0 (PASSED): Performance:
836199.51143490721
gfc::graph testing status: 0 (PASSED): Performance:
118470.61398863114
Multi-index sort testing status: 0 (PASSED): Performance:
239778.83863299151
Dynamic type inferrence slowdown: 0.1258 67109934.2342983 0.1312
67109934.2342983 1.0432470247796064
> However, I do not have a working code sample to run
The original test is not suitable for the test suite, but the author can
probably reduce it.
>From gcc-bugs-return-637975-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 12:28:34 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I would feel much safer if we do this TYPE_NEXT_VARIANT adjustment with turning
those types left out into distinct type if we'd fld_worklist_push
(TYPE_CANONICAL (type), fld); and so there would be at least sanity in what say
later build_qualified_type creates etc.
>From gcc-bugs-return-637976-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 12:41:31 2019
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Subject: [Bug rtl-optimization/86928] ICE in compute_live, at sel-sched.c:3097
Date: Wed, 20 Mar 2019 12:41:00 -0000
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--- Comment #3 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Andrey Belevantsev from comment #2)
> We're not somehow updating liveness information at all times when we change
> control flow. E.g. we do update liveness in sel_split_edge, but not in
> sel_redirect_edge_and_branch{,force} hooks, when we're making a new jump and
> resetting liveness on the bb it ended up in. This leaves us with the
> unknown lv set, and later breaks when we're computing liveness from the
> other region and come to this block, as we're assuming that other regions
> always have correct liveness.
>
> Fixed with the below patch but I'm not completely sure it fully makes sense
> -- Alexander, thoughts?
>
> diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
> index 85ff5bd3eb4..c399c1117a3 100644
> --- a/gcc/sel-sched-ir.c
> +++ b/gcc/sel-sched-ir.c
> @@ -5642,6 +5642,8 @@ sel_redirect_edge_and_branch_force (edge e,
> basic_block to)
> recompute_dominator (CDI_DOMINATORS, to));
> set_immediate_dominator (CDI_DOMINATORS, orig_dest,
> recompute_dominator (CDI_DOMINATORS, orig_dest));
> + if (jump == sel_bb_head (BLOCK_FOR_INSN (jump)))
> + compute_live (jump);
> }
>
> /* A wrapper for redirect_edge_and_branch. Return TRUE if blocks connected
> by
> @@ -5702,6 +5704,8 @@ sel_redirect_edge_and_branch (edge e, basic_block to)
> set_immediate_dominator (CDI_DOMINATORS, orig_dest,
> recompute_dominator (CDI_DOMINATORS,
> orig_dest));
> }
> + if (jump == sel_bb_head (BLOCK_FOR_INSN (jump)))
> + compute_live (jump);
> return recompute_toporder_p;
> }
It looks like the routine that creates recovery blocks also updates liveness,
so I'm now more confident with the patch, but I'd still like to hear
Alexander's opinion. Of course, it should really be sel_bb_head_p (jump)
instead of that clumsy condition I've wrote.
>From gcc-bugs-return-637977-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 13:28:46 2019
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Bug ID: 89774
Summary: Add flag to force single precision
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: marius.messerschmidt at googlemail dot com
Target Milestone: ---
It would be helpful if there was a flag (e.g. -fsingle-precision-literals) that
would cause gcc to treat floating point literals (e.g. 0.5 or 0.25 ...) in the
source code as single precision (float) and not double precision (double).
This could help improve performance of single precision code as right now there
are many conversion instructions (see objdump) which use quite a lot of runtime
(see perf).
>From gcc-bugs-return-637978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:24:36 2019
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Subject: [Bug target/88055] ICE in extract_insn, at recog.c:2305 on ppc64le
Date: Wed, 20 Mar 2019 14:24:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Moving this to P1. See comment 4.
>From gcc-bugs-return-637979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:40:21 2019
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From: "krebbel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89775] New: Stackpointer save/restore instructions optimized away
Date: Wed, 20 Mar 2019 14:40:00 -0000
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Bug ID: 89775
Summary: Stackpointer save/restore instructions optimized away
Product: gcc
Version: 7.0
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Defining the stack pointer register as global register triggers wrong code to
be generated thanks to bug in the prologue/epilogue optimization. In this case
the prologue save instruction for the stack pointer is removed while the
epilogue insn is kept. So r15 will be restored from f0 and hence loaded with
garbage.
register a __asm__("15");
b() { char c = 0; }
b:
ldgr %f2,%r11
lay %r15,-168(%r15)
lgr %r11,%r15
mvi 167(%r11),0
lr 0,0
lgr %r2,%r1
lgdr %r11,%f2
lgdr %r15,%f0
br %r14
Even if a global register is being clobbered in a function we usually do not
save and restore it. However, we still have to do this if it is a special
register. Most of the places in the backend handle this correctly but not the
prologue/epilogue optimization.
A fix is being tested and will be available soon.
>From gcc-bugs-return-637980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:40:44 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> Can't we change that way e.g. TYPE_CANONICAL of some type?
The types are unused, otherwise they'd be visited by fld.
> I would feel much safer if we do this TYPE_NEXT_VARIANT adjustment with turning > those types left out into distinct type if we'd fld_worklist_push
> (TYPE_CANONICAL (type), fld); and so there would be at least sanity in what say > later build_qualified_type creates etc.
not sure what you are refering to. All type-reuse keys on TYPE_MAIN_VARIANT
in the end and iff a such freed type is picked up later then FLD misses
some important use chain. The only one that might still come along the
type is the garbage collector and I was worried it might go off into
cycles if we leave TYPE_NEXT/MAIN_VARIANT unchanged but change the
TYPE_MAIN_VARIANT varaint chain.
>From gcc-bugs-return-637981-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:43:45 2019
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Subject: [Bug c/89774] Add flag to force single precision
Date: Wed, 20 Mar 2019 14:43:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
You can use -fsingle-precision-constant
>From gcc-bugs-return-637982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:47:01 2019
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From: "JunMa at linux dot alibaba.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89772] memchr for a character not in constant nul-padded string not folded
Date: Wed, 20 Mar 2019 14:47:00 -0000
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JunMa <JunMa at linux dot alibaba.com> changed:
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----------------------------------------------------------------------------
CC| |JunMa at linux dot alibaba.com
--- Comment #2 from JunMa <JunMa at linux dot alibaba.com> ---
Agreed, I think we should get trailing nulls from c_getstr() for
array when fold memchr/memcmp/bcmp builtins.
>From gcc-bugs-return-637984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:54:53 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/87808] gcc_lib_dir is missing from libgccjit's search path
Date: Wed, 20 Mar 2019 14:54:00 -0000
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
playback::context::invoke_driver builds the command line for the driver.
Does it work with each of these:
gcc_jit_context_set_bool_use_external_driver (ctxt, 1);
gcc_jit_context_set_bool_use_external_driver (ctxt, 0);
If you call:
gcc_jit_context_set_logfile (ctxt, stderr, 0, 0);
a verbose log will be written to stderr. See e.g.:
https://gcc.gnu.org/onlinedocs/jit/internals/index.html#example-of-log-file
In particular, the log for gcc::jit::playback::context::invoke_driver will show
the arguments that the driver is being called with.
Does it successfully link if you manually invoke the driver with those
arguments?
>From gcc-bugs-return-637983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:54:33 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #10)
> (In reply to Jakub Jelinek from comment #8)
> > Can't we change that way e.g. TYPE_CANONICAL of some type?
>
> The types are unused, otherwise they'd be visited by fld.
useless_type_conversion_p still do use TYPE_CANONICAL etc., but fld doesn't
walk it (unless TYPE_CANONICAL is equal to a type that has been walked (guess
the usual case):
/* Do not walk TYPE_CANONICAL. We do not stream it and thus do not
and want not to reach unused types this way. */
> > I would feel much safer if we do this TYPE_NEXT_VARIANT adjustment with turning > those types left out into distinct type if we'd fld_worklist_push
> > (TYPE_CANONICAL (type), fld); and so there would be at least sanity in what say > later build_qualified_type creates etc.
>
> not sure what you are refering to. All type-reuse keys on TYPE_MAIN_VARIANT
> in the end and iff a such freed type is picked up later then FLD misses
> some important use chain. The only one that might still come along the
> type is the garbage collector and I was worried it might go off into
> cycles if we leave TYPE_NEXT/MAIN_VARIANT unchanged but change the
> TYPE_MAIN_VARIANT varaint chain.
I was worried that we visit some type that has TYPE_CANONICAL we don't visit,
so it is removed from the TYPE_NEXT_VARIANT chain, and if that happens e.g. for
two variants of the same type, if they have different TYPE_CANONICAL (e.g.
because of different qualifications), it might cause trouble if those
TYPE_CANONICALs no longer have the same TYPE_MAIN_VARIANT.
>From gcc-bugs-return-637985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:56:14 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #15 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Not 100% sure if it's known, the comments don't seem to mention this, so I'll
note for completeness sake:
placement of the attribute makes a difference, here it looks like the attribute
on the type introduced via a typedef leads to weird semantics, while the
attribute on the struct itself leads to logical 32/16 size/align:
typedef struct __attribute__((aligned(16))) {
unsigned long long w[3];
} UINT192;
int a1 = __alignof(UINT192);
int s1 = sizeof(UINT192);
a1:
.long 16
s1:
.long 32
Also one cannot create a 64-bit aligned/128-bit sized typedef to 'long double'
on 32-bit:
typedef long double T __attribute__((aligned(8)));
int a1 = __alignof(T);
int s1 = sizeof(T);
a1:
.long 8
s1:
.long 12
>From gcc-bugs-return-637986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:57:03 2019
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Subject: [Bug target/89776] New: sse-movmskb-1.c testcase fails on PPC64 BE 32 bit Power8
Date: Wed, 20 Mar 2019 14:57:00 -0000
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Bug ID: 89776
Summary: sse-movmskb-1.c testcase fails on PPC64 BE 32 bit
Power8
Product: gcc
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Target: powerpc-*-*-*
sse-movmskb-1.c testcase fails on PPC64 BE 32 bit Power8
>From gcc-bugs-return-637987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 14:57:55 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Wed, 20 Mar 2019 14:57:00 -0000
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--- Comment #12 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 20 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89692
>
> --- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #10)
> > (In reply to Jakub Jelinek from comment #8)
> > > Can't we change that way e.g. TYPE_CANONICAL of some type?
> >
> > The types are unused, otherwise they'd be visited by fld.
>
> useless_type_conversion_p still do use TYPE_CANONICAL etc., but fld doesn't
> walk it (unless TYPE_CANONICAL is equal to a type that has been walked (guess
> the usual case):
>
> /* Do not walk TYPE_CANONICAL. We do not stream it and thus do not
> and want not to reach unused types this way. */
>
> > > I would feel much safer if we do this TYPE_NEXT_VARIANT adjustment with turning > those types left out into distinct type if we'd fld_worklist_push
> > > (TYPE_CANONICAL (type), fld); and so there would be at least sanity in what say > later build_qualified_type creates etc.
> >
> > not sure what you are refering to. All type-reuse keys on TYPE_MAIN_VARIANT
> > in the end and iff a such freed type is picked up later then FLD misses
> > some important use chain. The only one that might still come along the
> > type is the garbage collector and I was worried it might go off into
> > cycles if we leave TYPE_NEXT/MAIN_VARIANT unchanged but change the
> > TYPE_MAIN_VARIANT varaint chain.
>
> I was worried that we visit some type that has TYPE_CANONICAL we don't visit,
> so it is removed from the TYPE_NEXT_VARIANT chain, and if that happens e.g. for
> two variants of the same type, if they have different TYPE_CANONICAL (e.g.
> because of different qualifications), it might cause trouble if those
> TYPE_CANONICALs no longer have the same TYPE_MAIN_VARIANT.
All varaints have the same TYPE_CANONICAL, that of the main variant, and
we never throw away the main variant. Basically
gcc_assert (TYPE_CANONICAL (t) == TYPE_MAIN_VARIANT (TYPE_CANONICAL (t))
== TYPE_CANONICAL (TYPE_MAIN_VARAINT (t)))
holds
>From gcc-bugs-return-637989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:02:35 2019
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
Date: Wed, 20 Mar 2019 15:02:00 -0000
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--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
IMHO if we silently lower alignment of UINT192 as array elements we
should at least warn for
typedef __attribute__((aligned(16)))
struct {
unsigned long long w[3];
} UINT192;
UINT192 bid_Kx192[32];
like
UINT192 bid_Kx192[32];
^^^^^^^
warning: alignment of array element type lowered to 8
note: accesses via UINT192 * might generate wrong code
which IMHO is a reason to reject this. Can the bogus situation be reproduced
with C _Alignas?
>From gcc-bugs-return-637988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:02:13 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Wed, 20 Mar 2019 15:02:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #12)
> All varaints have the same TYPE_CANONICAL, that of the main variant, and
> we never throw away the main variant. Basically
>
> gcc_assert (TYPE_CANONICAL (t) == TYPE_MAIN_VARIANT (TYPE_CANONICAL (t))
> == TYPE_CANONICAL (TYPE_MAIN_VARAINT (t)))
>
> holds
If it holds, then no objection from me, I just wonder how far we'd get in a
bootstrap (including say Ada) if we've added that assert somewhere.
But in that case the comment that
/* Do not walk TYPE_CANONICAL. We do not stream it and thus do not
and want not to reach unused types this way. */
doesn't make much sense, because fld_worklist_push (TYPE_CANONICAL (t), fld);
wouldn't change anything.
>From gcc-bugs-return-637990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:05:38 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #14 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 20 Mar 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89692
>
> --- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> (In reply to rguenther@suse.de from comment #12)
> > All varaints have the same TYPE_CANONICAL, that of the main variant, and
> > we never throw away the main variant. Basically
> >
> > gcc_assert (TYPE_CANONICAL (t) == TYPE_MAIN_VARIANT (TYPE_CANONICAL (t))
> > == TYPE_CANONICAL (TYPE_MAIN_VARAINT (t)))
> >
> > holds
>
> If it holds, then no objection from me, I just wonder how far we'd get in a
> bootstrap (including say Ada) if we've added that assert somewhere.
> But in that case the comment that
> /* Do not walk TYPE_CANONICAL. We do not stream it and thus do not
> and want not to reach unused types this way. */
> doesn't make much sense, because fld_worklist_push (TYPE_CANONICAL (t), fld);
> wouldn't change anything.
Theoretically TYPE_CANONICAL might point to an "unrelated" type, since
we re-build TYPE_CANONICAL with LTO rules the comment does make sense.
Of course the non-LTO compilation continues here so indeed that could
leave types unvisited that are reached by TYPE_CANONICAL during
the compilation up to stream-out (and into fat part compilation).
So yes, we should probably visit TYPE_CANONICAL here.
>From gcc-bugs-return-637991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:07:05 2019
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Subject: [Bug jit/87808] gcc_lib_dir is missing from libgccjit's search path
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
You definitely need binutils for libgccjit; it calls the driver (embedded
internally in the .so by default), which invokes the assembler and linker.
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Subject: [Bug c/43798] [8/9 Regression] attribute((aligned(x))) not honored for array element types?
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--- Comment #17 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
> Can the bogus situation be reproduced with C _Alignas?
C11 does not allow _Alignas on typedefs, so don't see how; likewise for alignas
in C++11.
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Subject: [Bug target/89775] [7/8/9 Regression] S/390: Stackpointer save/restore instructions optimized away
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89775
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-20
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|S/390: Stackpointer |[7/8/9 Regression] S/390:
|save/restore instructions |Stackpointer save/restore
|optimized away |instructions optimized away
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r203303.
Untested testcase:
--- gcc/testsuite/gcc.target/s390/pr89775-1.c 2019-01-14 16:30:42.457583504
-0500
+++ gcc/testsuite/gcc.target/s390/pr89775-1.c 2019-03-20 11:18:03.102516703
-0400
@@ -0,0 +1,17 @@
+/* PR target/89775 */
+/* { dg-do run } */
+/* { dg-options "-O0 -fomit-frame-pointer" } */
+/* { dg-additional-sources "pr89775-2.c" } */
+
+register void *sp __asm ("15");
+
+__attribute__((noipa)) int
+foo (const char *a, const char *b)
+{
+ while (1)
+ {
+ char c = *a++;
+ if (c != *b++) return 0;
+ if (c == '\0') return 1;
+ }
+}
--- gcc/testsuite/gcc.target/s390/pr89775-2.c 2019-01-14 16:30:42.457583504
-0500
+++ gcc/testsuite/gcc.target/s390/pr89775-2.c 2019-03-20 11:18:11.552516703
-0400
@@ -0,0 +1,25 @@
+/* PR target/89775 */
+/* { dg-do compile } */
+
+extern int foo (const char *, const char *);
+
+__attribute__((noipa)) void
+bar (const char *p)
+{
+ static const char *x;
+ if (!x)
+ x = p;
+ else if (p != x)
+ __builtin_abort ();
+}
+
+int
+main ()
+{
+ char a[8] = "abcdefg";
+ bar (a);
+ if (foo (a, a) != 1)
+ __builtin_abort ();
+ bar (a);
+ return 0;
+}
>From gcc-bugs-return-637994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:29:13 2019
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Subject: [Bug target/89775] [7/8/9 Regression] S/390: Stackpointer save/restore instructions optimized away
Date: Wed, 20 Mar 2019 15:29:00 -0000
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--- Comment #2 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Wed Mar 20 15:28:38 2019
New Revision: 269823
URL: https://gcc.gnu.org/viewcvs?rev=269823&root=gcc&view=rev
Log:
S/390: Fix PR89775. Stackpointer save/restore instructions removed
Even if a global register is being clobbered in a function we usually
do not save and restore it. However, we still have to do this if it is
a special register. Most of the places in the backend handle this
correctly but not the prologue/epilogue optimization.
gcc/ChangeLog:
2019-03-20 Andreas Krebbel <krebbel@linux.ibm.com>
PR target/89775
* config/s390/s390.c (global_not_special_regno_p): Move to make it
available to ...
(s390_optimize_register_info): Use global_not_special_regno_p to
check for global regs.
2019-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/89775
* gcc.target/s390/pr89775-1.c: New test.
* gcc.target/s390/pr89775-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/s390/pr89775-1.c
trunk/gcc/testsuite/gcc.target/s390/pr89775-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-637995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:34:05 2019
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From: "marius.messerschmidt at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89774] Add flag to force single precision
Date: Wed, 20 Mar 2019 15:34:00 -0000
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Marius Messerschmidt <marius.messerschmidt at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|WORKSFORME |FIXED
--- Comment #2 from Marius Messerschmidt <marius.messerschmidt at googlemail dot com> ---
This will cause issues the other way around as well.
I think that I did not state clearly what I meant...
Right now you can only use 'all double' or 'all float'. What I am looking for
is some kind of performance-oriented solution that will pick the 'best' option
for each literal.
Quick example:
void f() {
float a = 2.0; // 2.0 -> single
float b = 2.0 * b; // 2.0 -> single
double d = 3.0; // 3.0 -> double
double e = 3.0 * d;// 3.0 -> double
double z = 2.0 * a + 3.0 * d; // both 2.0 and 3.0 -> double (only cast a)
}
The basic idea is to increase performance by reducing casting instructions.
Is something like that already implemented or if not, do you think that this is
useful and could be implemented?
>From gcc-bugs-return-637996-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:43:13 2019
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Subject: [Bug jit/87808] gcc_lib_dir is missing from libgccjit's search path
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--- Comment #4 from Matthias Klose <doko at debian dot org> ---
Understood, that I need binutils. However if you remove the driver (or rename
it on your system), then the debug output reads:
JIT: entering: virtual void
gcc::jit::playback::compile_to_memory::postprocess(const char*)
JIT: entering: void gcc::jit::playback::context::convert_to_dso(const
char*)
JIT: entering: void gcc::jit::playback::context::invoke_driver(const
char*, const char*, const char*, timevar_id_t, bool, bool)
JIT: entering: void
gcc::jit::playback::context::add_multilib_driver_arguments(vec<char*, va_heap,
vl_ptr>*)
JIT: exiting: void
gcc::jit::playback::context::add_multilib_driver_arguments(vec<char*, va_heap,
vl_ptr>*)
JIT: argv[0]: x86_64-linux-gnu-gcc-9
JIT: argv[1]: -m64
JIT: argv[2]: -shared
JIT: argv[3]: /tmp/libgccjit-p43Zl1/fake.s
JIT: argv[4]: -o
JIT: argv[5]: /tmp/libgccjit-p43Zl1/fake.so
JIT: argv[6]: -fno-use-linker-plugin
JIT: entering: void
gcc::jit::playback::context::invoke_embedded_driver(const vec<char*, va_heap,
vl_ptr>*)
ld: cannot find crtbeginS.o: No such file or directory
ld: cannot find -lgcc
ld: cannot find -lgcc_s
JIT: entering: void
gcc::jit::recording::context::add_error_va(gcc::jit::recording::location*,
const char*, __va_list_tag*)
JIT: error 0: error invoking gcc driver
libgccjit.so: error: error invoking gcc driver
JIT: exiting: void
gcc::jit::recording::context::add_error_va(gcc::jit::recording::location*,
const char*, __va_list_tag*)
JIT: exiting: void
gcc::jit::playback::context::invoke_embedded_driver(const vec<char*, va_heap,
vl_ptr>*)
JIT: exiting: void gcc::jit::playback::context::invoke_driver(const char*,
const char*, const char*, timevar_id_t, bool, bool)
JIT: exiting: void gcc::jit::playback::context::convert_to_dso(const char*)
JIT: exiting: virtual void
gcc::jit::playback::compile_to_memory::postprocess(const char*)
so something is calling the external driver ...
>From gcc-bugs-return-637997-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:51:21 2019
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Subject: [Bug rtl-optimization/89777] New: Any optimizaton level over -O0 causes crash in dynamic_cast
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Bug ID: 89777
Summary: Any optimizaton level over -O0 causes crash in
dynamic_cast
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
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Created attachment 45998
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45998&action=edit
Code that causes crash
The code in the attachment crashes on execution when compiled as
g++ -O* gcc_bug.cpp
unless '*' is '0'.
>From gcc-bugs-return-637998-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 15:54:33 2019
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Subject: [Bug rtl-optimization/89777] Any optimizaton level over -O0 causes crash in dynamic_cast
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|wrong-code |
Status|UNCONFIRMED |RESOLVED
Component|tree-optimization |rtl-optimization
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
p_bb1->bar<blah_blah *>(); is undefined because p_bb1 is a NULL pointer.
You can find this behavior at runtime by using -fsanitize=undefined.
>From gcc-bugs-return-637999-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:02:48 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89621] [7/8/9 Regression] ICE with allocatable character and openmp
Date: Wed, 20 Mar 2019 16:02:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that tree-inline.c will remap variably_modified_type_p types
unconditionally.
I've tried:
--- gcc/tree-inline.c.jj 2019-03-11 22:56:55.888667590 +0100
+++ gcc/tree-inline.c 2019-03-20 15:28:59.207677470 +0100
@@ -595,6 +595,18 @@ remap_type_1 (tree type, copy_body_data
walk_tree (&TYPE_SIZE_UNIT (new_tree), copy_tree_body_r, id, NULL);
}
+ if (TREE_CODE (new_tree) == ARRAY_TYPE
+ && !TYPE_STRUCTURAL_EQUALITY_P (new_tree))
+ {
+ hashval_t hash = type_hash_canon_hash (new_tree);
+ tree t = type_hash_canon (hash, new_tree);
+ if (t != new_tree)
+ {
+ insert_decl_map (id, type, t);
+ return t;
+ }
+ }
+
return new_tree;
}
but that doesn't help, as Fortran doesn't use TYPE_CANONICAL.
Another possibility would be walk the type first and for all the decls found
there check if remap_decl returns something different from the decl, and if
not, remap type to itself.
Yet another possibility is just fold_convert the types to avoid the assert and
hope for the best.
>From gcc-bugs-return-638000-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:04:48 2019
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Subject: [Bug middle-end/89621] [7/8/9 Regression] ICE with allocatable character and openmp
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In particular, what's going on here is that we have a pointer to VLA type,
remap it once on !$omp parallel (that is required, the decls are remapped in
that case) and once again on !$omp do (which is unexpected, because that
construct remaps (privatizes) only what has been explicitly privatized, the
rest is shared and doesn't need any remapping).
>From gcc-bugs-return-638001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:23:33 2019
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Subject: [Bug c/89774] Add flag to force single precision
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Marius Messerschmidt <marius.messerschmidt at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|FIXED |---
--- Comment #3 from Marius Messerschmidt <marius.messerschmidt at googlemail dot com> ---
Reopening issue
>From gcc-bugs-return-638002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:27:16 2019
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Subject: [Bug c/89774] Add flag to force single precision
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Marius Messerschmidt from comment #2)
> Is something like that already implemented or if not, do you think that this
> is useful and could be implemented?
This optimization is mostly done already. Did you check before posting that
comment?
>From gcc-bugs-return-638003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:41:01 2019
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Subject: [Bug c/89774] Add flag to force single precision
Date: Wed, 20 Mar 2019 16:41:00 -0000
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--- Comment #5 from Marius Messerschmidt <marius.messerschmidt at googlemail dot com> ---
I did checkt the output without --fsingle-precision-constant
Is this only enabled via -fsingle-precision-constant or at any optimization
level?
>From gcc-bugs-return-638004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:42:43 2019
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Subject: [Bug c++/89777] Any optimizaton level over -O0 causes crash in dynamic_cast
Date: Wed, 20 Mar 2019 16:42:00 -0000
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--- Comment #2 from Nick Savoiu <savoiu at yahoo dot com> ---
I was afraid that it would be resolved as such.
>From gcc-bugs-return-638005-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 16:55:11 2019
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Subject: [Bug c/89774] Add flag to force single precision
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Take your example and convert it into different functions:
float a(void)
{
return 2.0;
}
float b(float a)
{
return 2.0 * a;
}
double d(void)
{
return 3.0;
}
double e(double d)
{
return 3.0 * d;
}
double z(float a, double d)
{
return 2.0 * a + 3.0 * d;
}
---- CUT ----
a:
.LFB0:
.cfi_startproc
vmovss .LC0(%rip), %xmm0 ;;; load single
ret
b:
.LFB1:
.cfi_startproc
vaddss %xmm0, %xmm0, %xmm0 ;;; add single (same as a*2.0)
ret
d:
.LFB2:
.cfi_startproc
vmovsd .LC1(%rip), %xmm0 ;;; load double
ret
e:
.LFB3:
.cfi_startproc
vmulsd .LC1(%rip), %xmm0, %xmm0 ;;; multiple double
ret
z:
.LFB4:
.cfi_startproc
vmulsd .LC1(%rip), %xmm1, %xmm1 ;; multiple double
vcvtss2sd %xmm0, %xmm0, %xmm0 ;; convert single to double
vfmadd132sd .LC2(%rip), %xmm1, %xmm0 ;; multiple add double
ret
>From gcc-bugs-return-638006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 17:00:53 2019
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Subject: [Bug c/89774] Add flag to force single precision
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--- Comment #7 from Marius Messerschmidt <marius.messerschmidt at googlemail dot com> ---
Looks good, which options did you use?
>From gcc-bugs-return-638007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 17:04:48 2019
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Subject: [Bug c/89774] Add flag to force single precision
Date: Wed, 20 Mar 2019 17:04:00 -0000
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--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Marius Messerschmidt from comment #7)
> Looks good, which options did you use?
-O2 -march=native (the last part was done as I wanted to get the fused
multiple-add but it is not needed).
>From gcc-bugs-return-638008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 17:14:15 2019
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Subject: [Bug jit/87808] gcc_lib_dir is missing from libgccjit's search path when driver is not installed
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|gcc_lib_dir is missing from |gcc_lib_dir is missing from
|libgccjit's search path |libgccjit's search path
| |when driver is not
| |installed
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Log of our chat about this on IRC:
<doko> dmalcolm: so the driver has to be present to use libgccjit?
<dmalcolm> doko: if you call gcc_jit_context_set_bool_use_external_driver
(ctxt, 1) it does; it defaults to using an internal driver though iirc
* dmalcolm checks
<dmalcolm> yup
<doko> dmalcolm: looking at https://paste.ubuntu.com/p/Sz2hJ8rKZX/ the
external driver is called despite explicitly calling
gcc_jit_context_set_bool_use_external_driver (ctxt, 0); at least that's how I
interpret the debug output
<dmalcolm> doko: I don't think it is. I see calls that invoke_driver is
calling invoke_embedded_driver
<dmalcolm> s/calls //
<doko> dmalcolm: no, https://paste.ubuntu.com/p/KZV5jJQNRf/ this is with the
x86_64-linux-gnu-gcc-9 removed
<dmalcolm> bother
<dmalcolm> doko: maybe try passing gcc_jit_context_add_command_line_option
(ctxt, "-v") or similar to get a more verbose output from the embedded driver
<dmalcolm> s/passing/calling/
<dmalcolm> doko: sorry, gcc_jit_context_add_driver_option, I meant to say
<doko> dmalcolm: https://paste.ubuntu.com/p/vRKRqXy65Y/ this is clearly output
from the external driver ...
<doko> or maybe I'm misunderstanding what the internal driver is, if it calls
the external one
<dmalcolm> doko: the "internal driver" is gcc.o linked inside libgccjit.so
It's the same code as the regular "gcc" binary, but called as a function. The
log shows it calling "invoke_embedded_driver"
<dmalcolm> doko: so yes, it looks remarkably like as if it had fork&exec-ed
gcc, but it's running that code in-process
<doko> dmalcolm: ok, but why do I see these errors, when I remove the external
driver?
<dmalcolm> doko: good question
<dmalcolm> doko: I see in that log:
<dmalcolm> COMPILER_PATH=
<dmalcolm>
LIBRARY_PATH=/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/lib/:/usr/lib/
<dmalcolm> doko: does that change when reinstalling the external driver?
<dmalcolm> doko: presumably you're not uninstalling the .o and libs it's
looking for, right? I'm assuming this is just a "choosing the right directory
to look in" issue
<doko> dmalcolm: yes, just removing the driver, nothing else. See
https://paste.ubuntu.com/p/T7J9DDDTqW/ look at COMPILER_PATH and LIBRARY_PATH
<dmalcolm> doko: interesting. It's also calling collect2 vs calling ld
<doko> that explains why it succeeds without the driver, and manually setting
LIBRARY_PATH
<dmalcolm> doko: looking at gcc.c I see various places using gcc_exec_prefix
where it's locating things relative to the driver binary
<dmalcolm> doko: I think make_relative_prefix is looking for the driver based
on PATH
<dmalcolm> doko: when the driver binary is present, the gcc.c code finds its
directory, via get_relative_prefix, and sets gcc_exec_prefix and
gcc_libexec_prefix, I think
<dmalcolm> doko: when the driver binary is not in PATH, it doesn't find it, and
those vars don't get set up
<dmalcolm> doko: does it work if you set GCC_EXEC_PREFIX in the environment?
presumably to /usr/lib/gcc/x86_64-linux-gnu/9/ or somesuch
<doko> dmalcolm: yes
<dmalcolm> doko: I wonder if we can get it work by having it look relative to
the .so, rather than relative to the driver
<dmalcolm> doko: oh, that's not going to work; make_relative_prefix looks for
the thing on the PTH
<dmalcolm> PATH, even
<doko> dmalcolm: yep, that's what I just found as well
<dmalcolm> doko: I think the pertinent comment here is:
<dmalcolm> /* From this point onward, gcc_exec_prefix is non-null if the
toolchain
<dmalcolm> is relocated. The toolchain was either relocated using
GCC_EXEC_PREFIX
<dmalcolm> or an automatically created GCC_EXEC_PREFIX from
<dmalcolm> decoded_options[0].arg. */
<dmalcolm> doko: and the logic for the latter depends on locating
decoded_options[0].arg
<dmalcolm> doko: by finding it on PATH
<doko> ... which doesn't cover libgccjit's use case
<doko> dmalcolm: should libgccjit set GCC_EXEC_PREFIX in the environment when
it's not set?
<dmalcolm> doko: perhaps. But it's good to be relocatable. I'm not sure what
the value it would set it to should be
<dmalcolm> doko: is there a way for a .so to ask: what location am I linked
from?
<dmalcolm> (analogous to how the driver binary is querying PATH to try to find
where it's been run from)
<doko> dmalcolm: /proc/self/maps ?
<dmalcolm> gahh
<dmalcolm> doko: that could work, but sounds like a portability nightmare
<dmalcolm> doko: if this is a purely packaging thing, can we ignore
relocatability for this use-case, and hardcode where the installation path will
be?
<dmalcolm> doko: then have libgccjit set GCC_EXEC_PREFIX to the correct
(hardcoded) path for packaged builds
<doko> dmalcolm: +1, otherwise I would have to add a gcc dependency tp
libgccjit0
<dmalcolm> doko: in Fedora we have a gcc dep for libgccjit
<doko> yes, that's the other option
<doko> dmalcolm: when adding that, where should this go?
<dmalcolm> doko: totally untested:
https://paste.fedoraproject.org/paste/sPA97QW4RkS5LHPjGAcxFg
<dmalcolm> doko: (plus it needs a comment explaining why we're doing it)
<doko> dmalcolm: ok, I'll look into that tomorrow
<dmalcolm> doko: or just add the dep :)
>From gcc-bugs-return-638009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 18:04:13 2019
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Subject: [Bug libstdc++/89778] New: std::get_time : %d does not work without leading zeros
Date: Wed, 20 Mar 2019 18:04:00 -0000
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Bug ID: 89778
Summary: std::get_time : %d does not work without leading zeros
Product: gcc
Version: 8.1.0
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#include <ctime>
#include <string>
#include <iomanip>
#include <sstream>
#include <iostream>
void printDate( const std::string &date_string ) {
std::istringstream is( date_string );
std::tm tm{};
static const char *date_format( "%Y/%b/%d" );
// d : parses the day of the month as a decimal number
// (range [01,31]), leading zeroes permitted but not required
is >> std::get_time( &tm, date_format );
char buf[ 20 ];
std::strftime( buf, 20, date_format, &tm );
std::cout << buf << '\n';
}
int main() {
printDate( "2019/Apr/09" );
printDate( "2019/Apr/9" );
std::cout << '\n';
printDate( "2017/Jan/02" );
printDate( "2017/Jan/2" );
std::cout << '\n';
printDate( "2018/Dec/07" );
printDate( "2018/Dec/7" );
}
###############
gcc-bug > g++ --version && g++ get_time-bug.cpp -o get_time-bug &&
./get_time-bug
g++ (Ubuntu 8.1.0-5ubuntu1~14.04) 8.1.0 <=== (x86 64-bit)
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
2019/Apr/09
2019/Apr/00
2017/Jan/02
2017/Jan/00
2018/Dec/07
2018/Dec/00
>From gcc-bugs-return-638010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 18:09:39 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Wed, 20 Mar 2019 18:09:00 -0000
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--- Comment #11 from DIL <liakhdi at ornl dot gov> ---
(In reply to Dominique d'Humieres from comment #10)
> With the patch in comment 8 all the tests compile and the original test in
> comment 0 gives ta runtime
>
> gfc::bank testing status: 0 (PASSED): Performance:
> 3532045.4736842103
> gfc::vector testing status: 0 (PASSED): Performance:
> 2515463.5218254919
> gfc::list testing status: 0 (PASSED): Performance:
> 2515463.5218254919
> gfc::tree testing status: 0 (PASSED): Performance:
> 1045525.1575901519
> gfc::dictionary testing status: 0 (PASSED): Performance:
> 836199.51143490721
> gfc::graph testing status: 0 (PASSED): Performance:
> 118470.61398863114
> Multi-index sort testing status: 0 (PASSED): Performance:
> 239778.83863299151
> Dynamic type inferrence slowdown: 0.1258 67109934.2342983 0.1312
> 67109934.2342983 1.0432470247796064
>
> > However, I do not have a working code sample to run
>
> The original test is not suitable for the test suite, but the author can
> probably reduce it.
Sorry, I am confused, I think Comment 1 already has such a reduced test. At
least the what it says there ...
>From gcc-bugs-return-638011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 18:33:47 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Sorry, I am confused, I think Comment 1 already has such a reduced test.
> At least the what it says there ...
It is a reduced test for the ICE (as are further reduced tests in comments 3
and 9),
but they do not allow to check that fortran is not producing a wrong code
instead of an ICE.
I understand
> However, I do not have a working code sample to run.
as asking for such a test.
>From gcc-bugs-return-638012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 18:51:48 2019
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Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
Date: Wed, 20 Mar 2019 18:51:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Slightly different testcase:
struct S {
int val;
constexpr operator int() const {
return static_cast<int>(val);
}
};
template<int N>
struct F { };
template<unsigned N>
constexpr void foo() {
F<S{N}> f;
}
int
main()
{
foo<2>();
}
>From gcc-bugs-return-638013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:23:56 2019
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Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This fixes it. But is it the best fix?
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -8056,7 +8056,14 @@ convert_template_argument (tree parm,
t = canonicalize_type_argument (t, complain);
if (!type_dependent_expression_p (orig_arg)
- && !uses_template_parms (t))
+ && !uses_template_parms (t)
+ /* This might trigger calling a conversion function with
+ a value-dependent argument, which could invoke taking
+ the address of a temporary representing the result of
+ the conversion. */
+ && !(COMPOUND_LITERAL_P (orig_arg)
+ && MAYBE_CLASS_TYPE_P (TREE_TYPE (orig_arg))
+ && value_dependent_expression_p (orig_arg)))
/* We used to call digest_init here. However, digest_init
will report errors, which we don't want when complain
is zero. More importantly, digest_init will try too
@@ -8092,7 +8099,7 @@ convert_template_argument (tree parm,
&& TREE_CODE (TREE_TYPE (innertype)) == FUNCTION_TYPE
&& TREE_OPERAND_LENGTH (inner) > 0
&& reject_gcc_builtin (TREE_OPERAND (inner, 0)))
- return error_mark_node;
+ return error_mark_node;
}
if (TREE_CODE (val) == SCOPE_REF)
>From gcc-bugs-return-638014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:26:28 2019
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45999
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45999&action=edit
gcc9-pr89692.patch
Untested patch.
>From gcc-bugs-return-638015-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:31:32 2019
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Subject: [Bug target/89775] [7/8 Regression] S/390: Stackpointer save/restore instructions optimized away
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |krebbel at gcc dot gnu.org
Summary|[7/8/9 Regression] S/390: |[7/8 Regression] S/390:
|Stackpointer save/restore |Stackpointer save/restore
|instructions optimized away |instructions optimized away
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far, thanks.
>From gcc-bugs-return-638016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:33:39 2019
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Subject: [Bug c++/87145] [7/8/9 Regression] Implicit conversion to scoped enum fails: "error: taking address of temporary/rvalue"
Date: Wed, 20 Mar 2019 19:33:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I'll post a slightly tweaked version of that patch. We'll see...
>From gcc-bugs-return-638018-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:42:10 2019
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Subject: [Bug libstdc++/45896] [C++0x] Facet time_get not reading dates according to the IEEE 1003 standard.
Date: Wed, 20 Mar 2019 19:42:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |myLC at gmx dot net
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89778 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:42:10 2019
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Subject: [Bug libstdc++/89778] std::get_time : %d does not work without leading zeros
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think this is a dup
*** This bug has been marked as a duplicate of bug 45896 ***
>From gcc-bugs-return-638019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 19:43:04 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/45896] [C++0x] Facet time_get not reading dates according to the IEEE 1003 standard.
Date: Wed, 20 Mar 2019 19:43:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2010-10-05 17:57:04 |2019-3-20
Severity|enhancement |normal
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Testcase from PR 89778:
#include <ctime>
#include <string>
#include <iomanip>
#include <sstream>
#include <iostream>
void printDate( const std::string &date_string ) {
std::istringstream is( date_string );
std::tm tm{};
static const char *date_format( "%Y/%b/%d" );
// d : parses the day of the month as a decimal number
// (range [01,31]), leading zeroes permitted but not required
is >> std::get_time( &tm, date_format );
char buf[ 20 ];
std::strftime( buf, 20, date_format, &tm );
std::cout << buf << '\n';
}
int main() {
printDate( "2019/Apr/09" );
printDate( "2019/Apr/9" );
std::cout << '\n';
printDate( "2017/Jan/02" );
printDate( "2017/Jan/2" );
std::cout << '\n';
printDate( "2018/Dec/07" );
printDate( "2018/Dec/7" );
}
>From gcc-bugs-return-638020-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 20:14:10 2019
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Subject: [Bug libstdc++/89778] std::get_time : %d does not work without leading zeros
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--- Comment #2 from myLC at gmx dot net ---
(In reply to Jonathan Wakely from comment #1)
> I think this is a dup
>
> *** This bug has been marked as a duplicate of bug 45896 ***
Thank you, yes indeed. Although, the title
"[C++0x] Facet time_get not reading dates according to the IEEE 1003 standard."
isn't really saying that much, considering it's about leading zeros.
>From gcc-bugs-return-638021-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 20:32:15 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/87480] [8/9 Regression] SFINAE constructor not matched, only in templated function
Date: Wed, 20 Mar 2019 20:32:00 -0000
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Mar 20 20:31:40 2019
New Revision: 269826
URL: https://gcc.gnu.org/viewcvs?rev=269826&root=gcc&view=rev
Log:
PR c++/87480 - decltype of member access in default template arg
The issue here is that declval<T>().d is considered instantiation-dependent
within a template, as the access to 'd' might depend on the particular
specialization. But when we're deducing template arguments for a call, we
know that the call and the arguments are non-dependent, so we can do the
substitution as though we aren't in a template. Which strictly speaking we
aren't, since the default argument is considered a separate definition.
* pt.c (type_unification_real): Accept a dependent result in
template context.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/fntmpdefarg11.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
>From gcc-bugs-return-638022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 21:03:10 2019
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89676] [7/8/9 Regression] Redundant moves for long long shift on 32bit x86
Date: Wed, 20 Mar 2019 21:03:00 -0000
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--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I am working on it. It is a non-trivial problem. We should somehow exclude
creation of conflicts in lra-lives.c for an early clobber matched with an
input.
I hope to fix it this week.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
Date: Wed, 20 Mar 2019 21:32:00 -0000
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--- Comment #10 from janus at gcc dot gnu.org ---
Author: janus
Date: Wed Mar 20 21:32:23 2019
New Revision: 269827
URL: https://gcc.gnu.org/viewcvs?rev=269827&root=gcc&view=rev
Log:
fix PR 71861
2019-03-20 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* symbol.c (check_conflict): ABSTRACT attribute conflicts with
INTRINSIC attribute.
2019-03-20 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* gfortran.dg/interface_abstract_5.f90: New test case.
Added:
trunk/gcc/testsuite/gfortran.dg/interface_abstract_5.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/symbol.c
trunk/gcc/testsuite/ChangeLog
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89676] [7/8/9 Regression] Redundant moves for long long shift on 32bit x86
Date: Wed, 20 Mar 2019 21:55:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I wonder if in this case the instruction couldn't replace the current =&r 0n Ic
constraints e.g. with =r,&r 0n,0n I,c because if the shift count is constant,
then I don't see the point of early-clobber, if the two inputs are n and I,
then
there are no input registers (arguably that should have been folded earlier),
if
one input is 0 and the other one is I, then the earlyclobber doesn't make much
sense either, the first input is equal to the output and there is no other
input.
It is just the variable shift count where the count is in %cl register and
there we must make sure that the destination register will not overlap %cl even
when doing stuff like: unsigned long long x; ... x = x << (char) x;
That said, if you can handle it in the RA, it could handle even those variable
shift cases better (just make sure it doesn't overlap ecx, but otherwise allow
the same reg as the first input).
>From gcc-bugs-return-638025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 21:57:05 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
Date: Wed, 20 Mar 2019 21:57:00 -0000
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--- Comment #13 from anlauf at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #12)
> > Sorry, I am confused, I think Comment 1 already has such a reduced test.
> > At least the what it says there ...
>
> It is a reduced test for the ICE (as are further reduced tests in comments 3
> and 9),
> but they do not allow to check that fortran is not producing a wrong code
> instead of an ICE.
>
> I understand
>
> > However, I do not have a working code sample to run.
>
> as asking for such a test.
Exactly.
Taking this PR. It has some overlap to PR85797 and can probably be fixed
with the same patch.
>From gcc-bugs-return-638026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 22:10:42 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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--- Comment #14 from DIL <liakhdi at ornl dot gov> ---
(In reply to anlauf from comment #13)
> (In reply to Dominique d'Humieres from comment #12)
> > > Sorry, I am confused, I think Comment 1 already has such a reduced test.
> > > At least the what it says there ...
> >
> > It is a reduced test for the ICE (as are further reduced tests in comments 3
> > and 9),
> > but they do not allow to check that fortran is not producing a wrong code
> > instead of an ICE.
> >
> > I understand
> >
> > > However, I do not have a working code sample to run.
> >
> > as asking for such a test.
>
> Exactly.
>
> Taking this PR. It has some overlap to PR85797 and can probably be fixed
> with the same patch.
Ok, so you are still looking for a single Fortran source file using this
feature, namely optional dummy procedure pointers, that would do something
non-trivial with them and produce PASS/FAIL output? If yes, then I can try
making such a reduced test (if needed). I am just not familiar with GNU test
requirements.
>From gcc-bugs-return-638027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 22:18:50 2019
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Subject: [Bug rtl-optimization/89676] [7/8/9 Regression] Redundant moves for long long shift on 32bit x86
Date: Wed, 20 Mar 2019 22:18:00 -0000
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--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #6)
>
> That said, if you can handle it in the RA, it could handle even those
> variable shift cases better (just make sure it doesn't overlap ecx, but
> otherwise allow the same reg as the first input).
I believe it should be fixed in RA. It is a common case: earlyclobber output
with a matched input. Currently they are conflicting and this results in worse
code generation.
Building conflict is now pretty complicated in LRA. My idea is to reload and
use one reload register for the output and input even if their allocations
satisfy such constraints. Actually, it is also good with LRA design to reflect
RA decisions in RTL as much as possible.
>From gcc-bugs-return-638028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 22:24:44 2019
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Subject: [Bug fortran/83515] ICE: Invalid expression in gfc_element_size
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--- Comment #15 from anlauf at gcc dot gnu.org ---
(In reply to DIL from comment #14)
> Ok, so you are still looking for a single Fortran source file using this
> feature, namely optional dummy procedure pointers, that would do something
> non-trivial with them and produce PASS/FAIL output? If yes, then I can try
> making such a reduced test (if needed). I am just not familiar with GNU test
> requirements.
Exactly. Just assume that many thousands of tests are run for
regression testing each time, and productivity of the developers
depends on the turnaround time.
>From gcc-bugs-return-638029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 22:26:53 2019
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
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anlauf at gcc dot gnu.org changed:
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--- Comment #4 from anlauf at gcc dot gnu.org ---
Revised patch that also addresses PR83515:
https://gcc.gnu.org/ml/fortran/2019-03/msg00109.html
>From gcc-bugs-return-638030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 22:58:55 2019
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Subject: [Bug fortran/85797] ICE in gfc_element_size, at fortran/target-memory.c:126
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Revised patch that also addresses PR83515:
The patch fixes the ICE. Compiling the tests z2.f90 or z3.f90 gives the error
2 | c = transfer(a, a)
| 1
Error: Cannot convert PROCEDURE to REAL(4) at (1)
or
2 | c = transfer(b, a)
| 1
Error: Cannot convert PROCEDURE to REAL(4) at (1)
>From gcc-bugs-return-638031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 23:03:55 2019
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Subject: =?UTF-8?B?W0J1ZyBtaWRkbGUtZW5kLzg5Nzc5XSBOZXc6IFs5IFJlZ3Jlc3Npb25dICBp?= =?UTF-8?B?bnRlcm5hbCBjb21waWxlciBlcnJvcjogdHJlZSBjaGVjazogZXhwZWN0ZWQg?= =?UTF-8?B?Y2xhc3Mg4oCYdHlwZeKAmSwgaGF2ZSDigJhleGNlcHRpb25hbOKAmSAoZXJy?= =?UTF-8?B?b3JfbWFyaykgaW4gdHJlZV9ub3BfY29udmVyc2lvbl9wLCBhdCB0cmVlLmM6?= =?UTF-8?B?MTI3OTg=?Date: Wed, 20 Mar 2019 23:03:00 -0000
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Bug ID: 89779
Summary: [9 Regression] internal compiler error: tree check:
expected class ‘type’, have ‘exceptional’ (error_mark)
in tree_nop_conversion_p, at tree.c:12798
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CC: crazylht at gmail dot com, rguenther at suse dot de
Target Milestone: ---
On x86-64, r269765 failed to build 526.blender_r in SPEC CPU 2017:
$ gcc -m64 -c -o blender/source/blender/modifiers/intern/MOD_skin.o -DSPEC
-DNDEBUG -Ispecrand -Iblender/extern/binreloc/include
-Iblender/extern/colamd/Include -Iblender/extern/glew/include
-Iblender/extern/libmv -Iblender/extern/libmv/intern -Iblender/extern/rangetree
-Iblender/extern/wcwidth -Iblender/intern -Iblender/intern/atomic
-Iblender/intern/audaspace/intern -Iblender/intern/cycles/blender
-Iblender/intern/elbeem/extern -Iblender/intern/ghost
-Iblender/intern/ghost/intern -Iblender/intern/glew-mx
-Iblender/intern/glew-mx/intern -Iblender/intern/guardedalloc
-Iblender/intern/guardedalloc/intern -Iblender/intern/iksolver/extern
-Iblender/intern/locale -Iblender/intern/memutil -Iblender/intern/mikktspace
-Iblender/intern/opencolorio -Iblender/intern/raskter
-Iblender/intern/smoke/extern -Iblender/intern/string -Iblender/intern/utfconv
-Iblender/source/blender/blenfont -Iblender/source/blender/blenfont/intern
-Iblender/source/blender/blenkernel -Iblender/source/blender/blenkernel/intern
-Iblender/source/blender/blenlib -Iblender/source/blender/blenlib/intern
-Iblender/source/blender/blenloader -Iblender/source/blender/blenloader/intern
-Iblender/source/blender/bmesh -Iblender/source/blender/bmesh/intern
-Iblender/source/blender/bmesh/tools -Iblender/source/blender/collada
-Iblender/source/blender/compositor -Iblender/source/blender/editors/animation
-Iblender/source/blender/editors/armature
-Iblender/source/blender/editors/curve -Iblender/source/blender/editors/gpencil
-Iblender/source/blender/editors/include
-Iblender/source/blender/editors/interface -Iblender/source/blender/editors/io
-Iblender/source/blender/editors/mask -Iblender/source/blender/editors/mesh
-Iblender/source/blender/editors/metaball
-Iblender/source/blender/editors/object
-Iblender/source/blender/editors/physics
-Iblender/source/blender/editors/render -Iblender/source/blender/editors/screen
-Iblender/source/blender/editors/sculpt_paint
-Iblender/source/blender/editors/sound
-Iblender/source/blender/editors/space_action
-Iblender/source/blender/editors/space_buttons
-Iblender/source/blender/editors/space_clip
-Iblender/source/blender/editors/space_console
-Iblender/source/blender/editors/space_file
-Iblender/source/blender/editors/space_graph
-Iblender/source/blender/editors/space_image
-Iblender/source/blender/editors/space_info
-Iblender/source/blender/editors/space_logic
-Iblender/source/blender/editors/space_nla
-Iblender/source/blender/editors/space_node
-Iblender/source/blender/editors/space_outliner
-Iblender/source/blender/editors/space_script
-Iblender/source/blender/editors/space_sequencer
-Iblender/source/blender/editors/space_text
-Iblender/source/blender/editors/space_time
-Iblender/source/blender/editors/space_userpref
-Iblender/source/blender/editors/space_view3d
-Iblender/source/blender/editors/transform
-Iblender/source/blender/editors/util -Iblender/source/blender/editors/uvedit
-Iblender/source/blender/gpu -Iblender/source/blender/gpu/intern
-Iblender/source/blender/ikplugin -Iblender/source/blender/ikplugin/intern
-Iblender/source/blender/imbuf -Iblender/source/blender/imbuf/intern
-Iblender/source/blender/imbuf/intern/openexr -Iblender/source/blender/makesdna
-Iblender/source/blender/makesrna -Iblender/source/blender/makesrna/intern
-Iblender/source/blender/modifiers -Iblender/source/blender/modifiers/intern
-Iblender/source/blender/nodes -Iblender/source/blender/nodes/composite
-Iblender/source/blender/nodes/intern -Iblender/source/blender/nodes/shader
-Iblender/source/blender/nodes/texture -Iblender/source/blender/python
-Iblender/source/blender/render/extern/include
-Iblender/source/blender/render/intern/include
-Iblender/source/blender/render/intern/raytrace
-Iblender/source/blender/windowmanager
-Iblender/source/gameengine/BlenderRoutines
-Iblender_bin/source/blender/makesrna/intern -Iinclude -Ilibpng -Izlib
-DSPEC_AUTO_SUPPRESS_OPENMP -DSPEC_AUTO_BYTEORDER=0x12345678 -DGLEW_NO_ES
-DGLEW_STATIC -DWITH_DNA_GHASH -DWITH_GL_PROFILE_COMPAT -DWITH_HEADLESS
-DHAVE_UNSIGNED_CHAR -fno-unsafe-math-optimizations -mfpmath=sse
-march=skylake -Ofast -funroll-loops -funsigned-char -DSPEC_LINUX
-DSPEC_LP64 blender/source/blender/modifiers/intern/MOD_skin.c
during GIMPLE pass: ivopt
blender/source/blender/modifiers/intern/MOD_skin.c: In function
‘applyModifier’:
blender/source/blender/modifiers/intern/MOD_skin.c:1871:21: internal compiler
error: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in
tree_nop_conversion_p, at tree.c:12798
1871 | static DerivedMesh *applyModifier(ModifierData *md,
| ^~~~~~~~~~~~~
0x158096b tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree.c:9915
0x84ccf7 tree_class_check(tree_node const*, tree_code_class, char const*, int,
char const*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree.h:3555
0x158d49a tree_nop_conversion_p(tree_node const*, tree_node const*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree.c:12798
0x158d5f1 tree_nop_conversion
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree.c:12824
0x158d764 tree_strip_nop_conversions(tree_node*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree.c:12851
0xc4f3e1 operand_equal_p(tree_node const*, tree_node const*, unsigned int)
/export/gnu/import/git/gitlab/x86-gcc/gcc/fold-const.c:3017
0xc502cd operand_equal_p(tree_node const*, tree_node const*, unsigned int)
/export/gnu/import/git/gitlab/x86-gcc/gcc/fold-const.c:3201
0xc4ed53 operand_equal_p(tree_node const*, tree_node const*, unsigned int)
/export/gnu/import/git/gitlab/x86-gcc/gcc/fold-const.c:2950
0x138b44d loop_exits_before_overflow
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-ssa-loop-niter.c:4627
0x138bbfb scev_probably_wraps_p(tree_node*, tree_node*, tree_node*, gimple*,
loop*, bool)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-ssa-loop-niter.c:4835
0x1fcc6d6 convert_affine_scev(loop*, tree_node*, tree_node**, tree_node**,
gimple*, bool, tree_node*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-chrec.c:1299
0x1fcc8b5 chrec_convert_1
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-chrec.c:1357
0x1fccd91 chrec_convert(tree_node*, tree_node*, gimple*, bool, tree_node*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-chrec.c:1448
0x12b13fe interpret_rhs_expr
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:1974
0x12b1794 interpret_gimple_assign
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:2045
0x12b1909 analyze_scalar_evolution_1
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:2096
0x12b1b21 analyze_scalar_evolution(loop*, tree_node*)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:2165
0x12b1c2c analyze_scalar_evolution_in_loop
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:2267
0x12b493f simple_iv_with_niters(loop*, loop*, tree_node*, affine_iv*,
tree_node**, bool)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:3364
0x12b51d8 simple_iv(loop*, loop*, tree_node*, affine_iv*, bool)
/export/gnu/import/git/gitlab/x86-gcc/gcc/tree-scalar-evolution.c:3489
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-638032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 23:09:45 2019
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Subject: =?UTF-8?B?W0J1ZyBtaWRkbGUtZW5kLzg5Nzc5XSBbOSBSZWdyZXNzaW9uXSAgaW50ZXJu?= =?UTF-8?B?YWwgY29tcGlsZXIgZXJyb3I6IHRyZWUgY2hlY2s6IGV4cGVjdGVkIGNsYXNz?= =?UTF-8?B?IOKAmHR5cGXigJksIGhhdmUg4oCYZXhjZXB0aW9uYWzigJkgKGVycm9yX21h?= =?UTF-8?B?cmspIGluIHRyZWVfbm9wX2NvbnZlcnNpb25fcCwgYXQgdHJlZS5jOjEyNzk4?Date: Wed, 20 Mar 2019 23:09:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-20
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(gdb) f 9
#9 0x000000000138b44e in loop_exits_before_overflow (
base=<nop_expr 0x7fffea0a2f00>, step=<integer_cst 0x7fffea80c060>,
at_stmt=<gimple_assign 0x7fffea052e10>, loop=0x7fffea016220)
at /export/gnu/import/git/gitlab/x86-gcc/gcc/tree-ssa-loop-niter.c:4627
4627 if (operand_equal_p (base, civ->base, 0))
(gdb) call debug_tree (civ->base)
<nop_expr 0x7fffea0cb820
type <integer_type 0x7fffea8065e8 int sizes-gimplified public SI
size <integer_cst 0x7fffea7ecee8 constant 32>
unit-size <integer_cst 0x7fffea7ecf00 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set 10 canonical-type
0x7fffea8065e8 precision:32 min <integer_cst 0x7fffea7ecea0 -2147483648> max
<integer_cst 0x7fffea7eceb8 2147483647> context <translation_unit_decl
0x7fffe9f43348 blender/source/blender/modifiers/intern/MOD_skin.c>
pointer_to_this <pointer_type 0x7fffea80e9d8>>
arg:0 <plus_expr 0x7fffe9f8bfa0
type <integer_type 0x7fffea674690 public unsigned SI size <integer_cst
0x7fffea7ecee8 32> unit-size <integer_cst 0x7fffea7ecf00 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7fffea674690 precision:32 min <integer_cst 0x7fffea752bb8 0> max <integer_cst
0x7fffea752ab0 4294967295>>
arg:0 <nop_expr 0x7fffea0cb7e0 type <integer_type 0x7fffea674690>
arg:0 <ssa_name 0x7fffe9b86678 type <error_mark 0x7fffea7ecc90>
nothrow
def_stmt
version:1057 in-free-list>>
arg:1 <integer_cst 0x7fffea752c90 constant 2>>>
(gdb)
>From gcc-bugs-return-638033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 23:12:57 2019
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From: "redbeard0531 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89780] New: -Wpessimizing-move is too agressive with templates and recommends pessimization
Date: Wed, 20 Mar 2019 23:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89780
Bug ID: 89780
Summary: -Wpessimizing-move is too agressive with templates and
recommends pessimization
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
https://godbolt.org/z/JA-0Gq
#include <utility>
struct Dest {
Dest() = default;
Dest(Dest&&);
Dest(const Dest&);
};
struct Source : Dest {};
template <typename T>
Dest withMove() {
T x;
return std::move(x);
}
template <typename T>
Dest noMove() {
T x;
return x;
}
template Dest withMove<Dest>();
template Dest withMove<Source>();
template Dest noMove<Dest>();
template Dest noMove<Source>();
> g++ -O3 -Wall -std=c++17
<source>: In instantiation of 'Dest withMove() [with T = Dest]':
<source>:24:30: required from here
<source>:13:23: warning: moving a local object in a return statement prevents
copy elision [-Wpessimizing-move]
13 | return std::move(x);
| ^
<source>:13:23: note: remove 'std::move' call
Basically, gcc9 recommends changing withMove, where both Source and Dest are
moved from, in to noMove, where Dest is copy-elided but Source is copied. While
this is a minor optimization for the Dest instantiation, it is a potentially
significant pesimization for the Source one.
Amusingly, this code trips a warning in clang that recommends doing the
opposite, adding the std::move to turn noMove into withMove:
https://godbolt.org/z/WONlMN
<source>:20:12: warning: local variable 'x' will be copied despite being
returned by name [-Wreturn-std-move]
return x;
^
<source>:28:15: note: in instantiation of function template specialization
'noMove<Source>' requested here
template Dest noMove<Source>();
^
<source>:20:12: note: call 'std::move' explicitly to avoid copying
return x;
^
std::move(x)
There is just no winning!
>From gcc-bugs-return-638035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 23:53:57 2019
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Subject: [Bug d/89017] ICE in force_type_die, at dwarf2out.c:26061
Date: Wed, 20 Mar 2019 23:53:00 -0000
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Fixed in r269828.
>From gcc-bugs-return-638034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Mar 20 23:53:24 2019
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Subject: [Bug d/89017] ICE in force_type_die, at dwarf2out.c:26061
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--- Comment #2 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Wed Mar 20 23:52:48 2019
New Revision: 269828
URL: https://gcc.gnu.org/viewcvs?rev=269828&root=gcc&view=rev
Log:
d: Fix ICE force_type_die, at dwarf2out.c using nested types
In functions whose return type is instantiated from a nested template,
make sure that all members of the instance are emitted before finishing
the outer function, otherwise they will be removed during the
prune_unused_types pass.
gcc/d/ChangeLog:
2019-03-21 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/89017
* d-codegen.cc (d_decl_context): Skip over template instances when
finding the context.
* decl.cc (DeclVisitor::visit(TemplateDeclaration)): New override.
(build_type_decl): Include parameters in name of template types.
gcc/testsuite/ChangeLog:
2019-03-21 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/89017
* gdc.dg/pr89017.d: New test.
Added:
trunk/gcc/testsuite/gdc.dg/pr89017.d
Modified:
trunk/gcc/d/ChangeLog
trunk/gcc/d/d-codegen.cc
trunk/gcc/d/decl.cc
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 00:09:57 2019
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--- Comment #2 from Sunil Pandey <skpgkp1 at gmail dot com> ---
Reduced test:
$ cat x.i
typedef a;
c(a *d, int b) {
int e, f, g;
for (; e; e++)
for (f = 0; f < 4; f++)
if (d)
for (g = e + 1; g; g++)
h(d[g]);
}
i() {
a *j;
int k, l;
for (; k; k++)
c(j, l);
}
Good case:
$ gcc -B./ -Ofast -S x.i -w
$ echo $?
0
Bad case:
$ gcc -B./ -Ofast -S x.i -w
during GIMPLE pass: ivopts
x.i: In function ‘i’:
x.i:10:1: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in tree_nop_conversion_p, at tree.c:12792
10 | i() {
| ^
0x7265a6 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-main.42UM/gcc/tree.c:9909
0x72cd07 tree_class_check(tree_node const*, tree_code_class, char const*, int,
char const*)
../../gcc-main.42UM/gcc/tree.h:3555
0x72cd07 tree_nop_conversion_p(tree_node const*, tree_node const*)
../../gcc-main.42UM/gcc/tree.c:12792
0x1014931 tree_nop_conversion
../../gcc-main.42UM/gcc/tree.c:12818
0x1014931 tree_strip_nop_conversions(tree_node*)
../../gcc-main.42UM/gcc/tree.c:12845
0xa6b027 operand_equal_p(tree_node const*, tree_node const*, unsigned int)
../../gcc-main.42UM/gcc/fold-const.c:3017
0xa6b4b2 operand_equal_p(tree_node const*, tree_node const*, unsigned int)
../../gcc-main.42UM/gcc/fold-const.c:3201
0xa6b15a operand_equal_p(tree_node const*, tree_node const*, unsigned int)
../../gcc-main.42UM/gcc/fold-const.c:2950
0xed336d loop_exits_before_overflow
../../gcc-main.42UM/gcc/tree-ssa-loop-niter.c:4627
0xed336d scev_probably_wraps_p(tree_node*, tree_node*, tree_node*, gimple*,
loop*, bool)
../../gcc-main.42UM/gcc/tree-ssa-loop-niter.c:4835
0xed336d scev_probably_wraps_p(tree_node*, tree_node*, tree_node*, gimple*,
loop*, bool)
../../gcc-main.42UM/gcc/tree-ssa-loop-niter.c:4793
0x1643f8f convert_affine_scev(loop*, tree_node*, tree_node**, tree_node**,
gimple*, bool, tree_node*)
../../gcc-main.42UM/gcc/tree-chrec.c:1299
0x1643a78 chrec_convert_1
../../gcc-main.42UM/gcc/tree-chrec.c:1357
0xe47dd8 interpret_rhs_expr
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:1766
0xe45209 interpret_gimple_assign
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:2045
0xe45209 analyze_scalar_evolution_1
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:2096
0xe45bea analyze_scalar_evolution(loop*, tree_node*)
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:2165
0xe48f8a analyze_scalar_evolution_in_loop
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:2267
0xe490a8 simple_iv_with_niters(loop*, loop*, tree_node*, affine_iv*,
tree_node**, bool)
../../gcc-main.42UM/gcc/tree-scalar-evolution.c:3364
0xebe6f8 find_givs_in_stmt_scev
../../gcc-main.42UM/gcc/tree-ssa-loop-ivopts.c:1426
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-638037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 01:04:06 2019
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Subject: [Bug c++/89571] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
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--- Comment #11 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Mar 21 01:03:30 2019
New Revision: 269832
URL: https://gcc.gnu.org/viewcvs?rev=269832&root=gcc&view=rev
Log:
/cp
2019-03-21 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89571
* method.c (after_nsdmi_defaulted_late_checks): Avoid passing
error_mark_node to comp_except_specs.
/testsuite
2019-03-21 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/89571
* g++.dg/cpp0x/noexcept37.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/noexcept37.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/method.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 01:05:10 2019
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Subject: [Bug c++/89571] [9 Regression] ICE in nothrow_spec_p, at cp/except.c:1238
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
>From gcc-bugs-return-638039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 01:46:33 2019
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From: "redbeard0531 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89781] New: Misleading error messages when initializing a static data member in-class
Date: Thu, 21 Mar 2019 01:46:00 -0000
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Bug ID: 89781
Summary: Misleading error messages when initializing a static
data member in-class
Product: gcc
Version: 9.0
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The error messages make sense in a pre-c++17 world before inline variables
existed. Now they are lies!
struct X{};
struct Y { static X x = {}; };
<source>:2:21: error: 'constexpr' needed for in-class initialization of static
data member 'X Y::x' of non-integral type [-fpermissive]
struct Y { static X x = {}; };
^
The error is even worse when X can't be a constexpr variable:
struct X{ X(); };
struct Y { static X x = {}; };
<source>:2:21: error: in-class initialization of static data member 'X Y::x' of
non-literal type
struct Y { static X x = {}; };
^
<source>:2:26: error: temporary of non-literal type 'X' in a constant
expression
struct Y { static X x = {}; };
^
<source>:1:8: note: 'X' is not literal because:
struct X{ X(); };
^
<source>:1:8: note: 'X' is not an aggregate, does not have a trivial default
constructor, and has no 'constexpr' constructor that is not a copy or move
constructor
This compiles just fine:
struct X{ X(); };
struct Y { static inline X x = {}; };
All examples were passing -std=c++17.
>From gcc-bugs-return-638040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 02:33:12 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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--- Comment #10 from Rimvydas (RJ) <rimvydas.jas at gmail dot com> ---
Using 9.0.1 20190319 as reference several ICE cases reduce down to the same
snippet (regression on trunk)?
$ cat trunk_accepts_invalid.ii
class a {
constexpr a();
};
template <class> struct b { static constexpr a c{}; };
Using different tactics other two (hopefully valid) testcases:
$ cat vcontract.ii
template <template <class> class a> struct b {
template <class> static int c;
using d = decltype(c<a>);
};
template <typename> struct e {
template <typename a, typename> bool f() const;
template <typename, typename> bool f(int) const;
};
$ cat vdefault.ii
template <typename, template <typename, typename> class> struct a;
template <template <typename, typename> class b> struct a<int, b>;
template <typename> struct c {
template <typename b, typename, typename> bool operator()();
template <typename, typename, typename d> bool operator()(d);
};
>From gcc-bugs-return-638041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 02:44:47 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89782] New: Can do an internal READ of a character array when it is a parameter, but not a scalar character parameter
Date: Thu, 21 Mar 2019 02:44:00 -0000
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Bug ID: 89782
Summary: Can do an internal READ of a character array when it
is a parameter, but not a scalar character parameter
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
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Inconsistently, a scalar parameter CHARACTER variable fails with an internal
READ,
but a vector parameter CHARACTER variable works with an internal READ.
Not actually sure which one is wrong, but it is inconsistent. Could not find
anything in the Fortran standard that definitively cleared it up, other than
saying that
· "A record of an internal file is a scalar character variable".
with emphasis on "variable"(?). It seems one of them should be wrong, though.
This fails:
program nanio
character(len=*),parameter :: VALUE='NaN'
read(VALUE,*)float
write(*,*)float
end program nanio
PRODUCES THIS ERROR...
read(VALUE,*)float
1
Error: UNIT specification at (1) must be an INTEGER expression or a
CHARACTER variable
This works:
program nanio
character(len=*),parameter :: VALUES(*)=[character(len=10) ::
'NaN','NAN','nan','Inf','INF','inf','Infinity']
do i=1,size(VALUES)
read(VALUES(i),*)float
write(*,*)float
enddo
end program nanio
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Subject: [Bug fortran/89783] New: Can do an internal READ of a character array when it is a parameter, but not a scalar character parameter
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Bug ID: 89783
Summary: Can do an internal READ of a character array when it
is a parameter, but not a scalar character parameter
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: urbanjost at comcast dot net
Target Milestone: ---
Inconsistently, a scalar parameter CHARACTER variable fails with an internal
READ,
but a vector parameter CHARACTER variable works with an internal READ.
Not actually sure which one is wrong, but it is inconsistent. Could not find
anything in the Fortran standard that definitively cleared it up, other than
saying that
· "A record of an internal file is a scalar character variable".
with emphasis on "variable"(?). It seems one of them should be wrong, though.
This fails:
program nanio
character(len=*),parameter :: VALUE='NaN'
read(VALUE,*)float
write(*,*)float
end program nanio
PRODUCES THIS ERROR...
read(VALUE,*)float
1
Error: UNIT specification at (1) must be an INTEGER expression or a
CHARACTER variable
This works:
program nanio
character(len=*),parameter :: VALUES(*)=[character(len=10) ::
'NaN','NAN','nan','Inf','INF','inf','Infinity']
do i=1,size(VALUES)
read(VALUES(i),*)float
write(*,*)float
enddo
end program nanio
>From gcc-bugs-return-638043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 02:52:20 2019
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Subject: [Bug target/88838] [SVE] Use 32-bit WHILELO in LP64 mode
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--- Comment #5 from kugan at gcc dot gnu.org ---
Created attachment 46000
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46000&action=edit
RFC patch
RFC patch fixes this for review.
>From gcc-bugs-return-638044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 04:32:27 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/87243] FSF GCC needs to do something special (like using xcrun) on darwin18 to find system headers in SDK
Date: Thu, 21 Mar 2019 04:32:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|FSF needs to use xcrun on |FSF GCC needs to do
|darwin18 to find system |something special (like
|headers in SDK |using xcrun) on darwin18 to
| |find system headers in SDK
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #4)
> All I'm asking is that that we describe the real bug (i.e. that we need to
> be able to find the headers when they are not installed in some Well Known
> Place). It should also work for -mmacosz-version-min != current system
> revision (and therefore, might need to deal with finding libraries too - or
> else, for example, we won't be able to build m32 exes).
>
> -----
>
> As it happens, I had been giving this problem some thought - a couple of
> years ago.
>
> What we don't want is to cripple Darwin's toolchain by making it call more
> and more executables for each invocation.
>
> IFF you want to configure to use the current installed Xcode - you could
> just put
> --with-sysroot='xcrun --sdk ... etc` on the configure line.
>
> That doesn't solve the issue of the Xcode package being moved or the user
> issuing a --xcode-select ...
>
> ... so ....
> let's state the problem we want to solve and the cases we want to cover -
> and then figure out how to do it. The bug is not "we must use xcrun" the
> bug is "we need to find the headers under the following circumstances".
OK, retitling then.
>
> I had in mind, for the record, some scheme using symlinks in the user's home
> directory (since using schemes writing into the /xxx dirs require elevated
> permissions). There's still a penalty in looking up through a link c.f.
> direct access to things - but it would me much less than running a second
> process and parsing the output.
>
> ====
>
> JFTR: To support non-Apple-native clang builds I have to patch the LLVM
> cmake files to *avoid* the xcrun calls and use the SDk paths I want!.
>From gcc-bugs-return-638045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 04:46:36 2019
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Subject: [Bug bootstrap/87030] GCC fails to build with Xcode 10, attempting an impossible multilib build
Date: Thu, 21 Mar 2019 04:46:00 -0000
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--- Comment #16 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #15)
> FWIW I had a quick look the other day if there was an easy fix to this PR,
> and didn't find a '5 minute' one.
>
> (In reply to Eric Gallager from comment #14)
> > (In reply to Iain Sandoe from comment #13)
> > > (In reply to Jeremy Huddleston Sequoia from comment #12)
> > > > (In reply to Francois-Xavier Coudert from comment #11)
> > > > > (In reply to Jeremy Huddleston Sequoia from comment #10)
>
> > > Of course, one *can* pass --sysroot=`xcrun blah blah` on any command line
> > > (for the built compiler) as a work-around.
> > >
> > > I was trying to work on a scheme where the possible SDK search paths were
> > > provided by symlinks [in the user's home dir], with some configure-time
> > > specified search order (including the option to search /). Initial
> > > population of the symlinks might be time-significant - but subsequent
> > > following should be less than a process switch. There was some email
> > > exchange on this between me, Eric and Mike .. I will try to find it in my
> > > archives.
> >
> > You found it yet?
>
> Yes... it's in my (unfortunately large) stack of things to be forward-ported.
>
> Please see also comments on PR79885
>
> Also making a proper fix for PR84257 might involve reorganising things (in
> particular shifting from using absolute library paths to @rpath ones, for
> 10.5+ [not available on 10.4]).
>
> IMO, we really need to set out how we want Darwin toolchains to behave for
> the end user, and then figure out how to make the build and test work to
> support that. This is non-trivial in the presence of SIP, user-movable
> packages, and the library naming scheme. Still working on this.. but
> equally open to suggestions.
>
> It's certainly true that one use-case is "build a self-hosted GCC using
> Xcode" but that's definitely not the only scenario, and we [some of us at
> least] don't want to be locked into it.
At least personally I'd like to get away from the "using Xcode" part some
day...
>
> The other fact of life is that there are now such significant discrepancies
> between darwin versions from 8 .. 18 that we might no longer be able to
> avoid multi-libs to support the range properly.
>From gcc-bugs-return-638046-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 05:36:35 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
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Qirun Zhang <qrzhang at gatech dot edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |qrzhang at gatech dot edu
--- Comment #8 from Qirun Zhang <qrzhang at gatech dot edu> ---
bisect points to revision r217125.
commit 058a1b7aa18100b0cabbfa6c4b1fb6c97b8131a2
Author: ienkovich <ienkovich@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Nov 5 12:42:03 2014 +0000
gcc/
2014-11-05 Ilya Enkovich <ilya.enkovich@intel.com>
* ipa-chkp.c: New.
* ipa-chkp.h: New.
* tree-chkp.c: New.
* tree-chkp.h: New.
* tree-chkp-opt.c: New.
* rtl-chkp.c: New.
* rtl-chkp.h: New.
* Makefile.in (OBJS): Add ipa-chkp.o, rtl-chkp.o, tree-chkp.o
<...>
2014-11-05 Ilya Enkovich <ilya.enkovich@intel.com>
* gcc.target/i386/chkp-builtins-1.c: New.
* gcc.target/i386/chkp-builtins-2.c: New.
* gcc.target/i386/chkp-builtins-3.c: New.
* gcc.target/i386/chkp-builtins-4.c: New.
* gcc.target/i386/chkp-remove-bndint-1.c: New.
* gcc.target/i386/chkp-remove-bndint-2.c: New.
* gcc.target/i386/chkp-const-check-1.c: New.
* gcc.target/i386/chkp-const-check-2.c: New.
* gcc.target/i386/chkp-lifetime-1.c: New.
* gcc.dg/pr37858.c: Replace early_local_cleanups pass name
with build_ssa_passes.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@217125
138bc75d-0d04-0410-961f-82ee72b054a4
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Subject: [Bug target/89784] New: Missing AVX512 intrinsics
Date: Thu, 21 Mar 2019 06:49:00 -0000
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Bug ID: 89784
Summary: Missing AVX512 intrinsics
Product: gcc
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_mm_mask_fmsub_ss
>From gcc-bugs-return-638048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 06:51:02 2019
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Subject: [Bug target/89784] Missing AVX512 intrinsics
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--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
The following AVX512 intrinsics are missing:
VFMSUBxxxSS __m128 _mm_mask_fmsub_ss(__m128 a, __mmask8 k, __m128 b, __m128 c);
VFMSUBxxxSS __m128 _mm_maskz_fmsub_ss(__mmask8 k, __m128 a, __m128 b, __m128
c);
VFMSUBxxxSS __m128 _mm_mask3_fmsub_ss(__m128 a, __m128 b, __m128 c, __mmask8
k);
VFMSUBxxxSS __m128 _mm_mask_fmsub_round_ss(__m128 a, __mmask8 k, __m128 b,
__m128 c, int r);
VFMSUBxxxSS __m128 _mm_maskz_fmsub_round_ss(__mmask8 k, __m128 a, __m128 b,
__m128 c, int r);
VFMSUBxxxSS __m128 _mm_mask3_fmsub_round_ss(__m128 a, __m128 b, __m128 c,
__mmask8 k, int r);
VFMSUBxxxSD __m128d _mm_mask_fmsub_sd(__m128d a, __mmask8 k, __m128d b, __m128d
c);
VFMSUBxxxSD __m128d _mm_maskz_fmsub_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c);
VFMSUBxxxSD __m128d _mm_mask3_fmsub_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k);
VFMSUBxxxSD __m128d _mm_mask_fmsub_round_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c, int r);
VFMSUBxxxSD __m128d _mm_maskz_fmsub_round_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c, int r);
VFMSUBxxxSD __m128d _mm_mask3_fmsub_round_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k, int r);
>From gcc-bugs-return-638049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 06:56:44 2019
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--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
and
VFNMSUBxxxSS __m128 _mm_mask_fnmsub_ss(__m128 a, __mmask8 k, __m128 b, __m128
c);
VFNMSUBxxxSS __m128 _mm_maskz_fnmsub_ss(__mmask8 k, __m128 a, __m128 b, __m128
c);
VFNMSUBxxxSS __m128 _mm_mask3_fnmsub_ss(__m128 a, __m128 b, __m128 c, __mmask8
k);
VFNMSUBxxxSS __m128 _mm_mask_fnmsub_round_ss(__m128 a, __mmask8 k, __m128 b,
__m128 c, int r);
VFNMSUBxxxSS __m128 _mm_maskz_fnmsub_round_ss(__mmask8 k, __m128 a, __m128 b,
__m128 c, int r);
VFNMSUBxxxSS __m128 _mm_mask3_fnmsub_round_ss(__m128 a, __m128 b, __m128 c,
__mmask8 k, int r);
VFNMSUBxxxSD __m128d _mm_mask_fnmsub_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c);
VFNMSUBxxxSD __m128d _mm_maskz_fnmsub_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c);
VFNMSUBxxxSD __m128d _mm_mask3_fnmsub_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k);
VFNMSUBxxxSD __m128d _mm_mask_fnmsub_round_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c, int r);
VFNMSUBxxxSD __m128d _mm_maskz_fnmsub_round_sd(__mmask8 k, __m128d a, __m128d
b, __m128d c, int r);
VFNMSUBxxxSD __m128d _mm_mask3_fnmsub_round_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k, int r);
>From gcc-bugs-return-638050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 07:16:02 2019
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Subject: [Bug target/89784] Missing AVX512 intrinsics
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--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
and
VFMADDxxxSS __m128 _mm_mask_fmadd_ss(__m128 a, __mmask8 k, __m128 b, __m128 c);
VFMADDxxxSS __m128 _mm_maskz_fmadd_ss(__mmask8 k, __m128 a, __m128 b, __m128
c);
VFMADDxxxSS __m128 _mm_mask3_fmadd_ss(__m128 a, __m128 b, __m128 c, __mmask8
k);
VFMADDxxxSS __m128 _mm_mask_fmadd_round_ss(__m128 a, __mmask8 k, __m128 b,
__m128 c, int r);
VFMADDxxxSS __m128 _mm_maskz_fmadd_round_ss(__mmask8 k, __m128 a, __m128 b,
__m128 c, int r);
VFMADDxxxSS __m128 _mm_mask3_fmadd_round_ss(__m128 a, __m128 b, __m128 c,
__mmask8 k, int r);
VFNMADDxxxSS __m128 _mm_mask_fnmadd_ss(__m128 a, __mmask8 k, __m128 b, __m128
c);
VFNMADDxxxSS __m128 _mm_maskz_fnmadd_ss(__mmask8 k, __m128 a, __m128 b, __m128
c);
VFNMADDxxxSS __m128 _mm_mask3_fnmadd_ss(__m128 a, __m128 b, __m128 c, __mmask8
k);
VFNMADDxxxSS __m128 _mm_mask_fnmadd_round_ss(__m128 a, __mmask8 k, __m128 b,
__m128 c, int r);
VFNMADDxxxSS __m128 _mm_maskz_fnmadd_round_ss(__mmask8 k, __m128 a, __m128 b,
__m128 c, int r);
VFNMADDxxxSS __m128 _mm_mask3_fnmadd_round_ss(__m128 a, __m128 b, __m128 c,
__mmask8 k, int r);
VFNMADDxxxSD __m128d _mm_mask_fnmadd_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c);
VFNMADDxxxSD __m128d _mm_maskz_fnmadd_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c);
VFNMADDxxxSD __m128d _mm_mask3_fnmadd_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k);
VFNMADDxxxSD __m128d _mm_mask_fnmadd_round_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c, int r);
VFNMADDxxxSD __m128d _mm_maskz_fnmadd_round_sd(__mmask8 k, __m128d a, __m128d
b, __m128d c, int r);
VFNMADDxxxSD __m128d _mm_mask3_fnmadd_round_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k, int r);
VFMADDxxxSD __m128d _mm_mask_fmadd_sd(__m128d a, __mmask8 k, __m128d b, __m128d
c);
VFMADDxxxSD __m128d _mm_maskz_fmadd_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c);
VFMADDxxxSD __m128d _mm_mask3_fmadd_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k);
VFMADDxxxSD __m128d _mm_mask_fmadd_round_sd(__m128d a, __mmask8 k, __m128d b,
__m128d c, int r);
VFMADDxxxSD __m128d _mm_maskz_fmadd_round_sd(__mmask8 k, __m128d a, __m128d b,
__m128d c, int r);
VFMADDxxxSD __m128d _mm_mask3_fmadd_round_sd(__m128d a, __m128d b, __m128d c,
__mmask8 k, int r);
>From gcc-bugs-return-638051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 07:22:30 2019
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Subject: [Bug c++/89785] New: Incorrect "not a constant expression" error with switch statement that returns
Date: Thu, 21 Mar 2019 07:22:00 -0000
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Bug ID: 89785
Summary: Incorrect "not a constant expression" error with
switch statement that returns
Product: gcc
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The following code fails to compile:
constexpr int Addrlen(int domain) {
switch (domain) {
case 0:
return 0;
case 2:
return 42;
}
throw 42;
}
Error message is following:
<source>: In function 'constexpr int Addrlen(int)':
<source>:8:11: error: expression '<throw-expression>' is not a constant
expression
8 | throw 42;
| ^~
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Subject: [Bug fortran/89783] Can do an internal READ of a character array when it is a parameter, but not a scalar character parameter
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 89782 ***
>From gcc-bugs-return-638053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 07:40:04 2019
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Subject: [Bug fortran/89782] Can do an internal READ of a character array when it is a parameter, but not a scalar character parameter
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 89783 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 07:55:31 2019
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Subject: [Bug fortran/89782] Can do an internal READ of a character array when it is a parameter, but not a scalar character parameter
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-21
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.3.1 up to trunk (9.0).
>From gcc-bugs-return-638055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 08:02:31 2019
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From: "abel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
Date: Thu, 21 Mar 2019 08:02:00 -0000
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--- Comment #8 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
Sigh. We set reset_sched_cycles_p to pipelining_p after the conditional, but
we have missed that in sel_sched_region_1 pipelining_p will be set to false.
So that initial patch should have the following hunk instead:
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index 315f2c0c0ab..29d9abd7200 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -7648,11 +7648,11 @@ sel_sched_region (int rgn)
/* Schedule always selecting the next insn to make the correct data
for bundling or other later passes. */
pipelining_p = false;
+ reset_sched_cycles_p = false;
force_next_insn = 1;
sel_sched_region_1 ();
force_next_insn = 0;
}
- reset_sched_cycles_p = pipelining_p;
sel_region_finish (reset_sched_cycles_p);
}
I've checked that it fixes the ICE on the original revision, trunk doesn't ICE
for me.
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Subject: [Bug rtl-optimization/85876] ICE in move_op_ascend, at sel-sched.c:6164
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Andrey Belevantsev <abel at gcc dot gnu.org> changed:
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| |amonakov at gcc dot gnu.org
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>From gcc-bugs-return-638057-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 08:34:54 2019
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Subject: [Bug rtl-optimization/85876] ICE in move_op_ascend, at sel-sched.c:6164
Date: Thu, 21 Mar 2019 08:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85876
--- Comment #1 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
This is caused by the overeager fix of PR 48235. We're unwinding the
first_insn variable (the border to which we step backwards in code motion) too
far so it gets beyond the original fence, which happens to be mid-block instead
of bb head. Fixed as below. Alexander, do you remember anything else about
that PR (e.g. I think there was a code to unwind the fence back to account for
the unscheduled instructions, but this is not it).
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index 315f2c0c0ab..6116e43f998 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -6437,7 +6437,7 @@ code_motion_path_driver (insn_t insn, av_set_t orig_ops,
ilist_t path,
{
expr_t expr = NULL;
basic_block bb = BLOCK_FOR_INSN (insn);
- insn_t first_insn, bb_tail, before_first;
+ insn_t first_insn, original_insn, bb_tail, before_first;
bool removed_last_insn = false;
if (sched_verbose >= 6)
@@ -6521,7 +6521,7 @@ code_motion_path_driver (insn_t insn, av_set_t orig_ops,
ilist_t path,
/* It is enough to place only heads and tails of visited basic blocks into
the PATH. */
ilist_add (&path, insn);
- first_insn = insn;
+ first_insn = original_insn = insn;
bb_tail = sel_bb_end (bb);
/* Descend the basic block in search of the original expr; this part
@@ -6628,6 +6628,8 @@ code_motion_path_driver (insn_t insn, av_set_t orig_ops,
ilist_t path,
{
insn = sel_bb_end (bb);
first_insn = sel_bb_head (bb);
+ if (first_insn != original_insn)
+ first_insn = original_insn;
}
/* Remove bb tail from path. */
>From gcc-bugs-return-638058-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 08:39:10 2019
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So you say that Addrlen(0) and Addrlen(2) are proper constexprs? Of course
Addrlen(1) is not.
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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> ---
Mine.
>From gcc-bugs-return-638060-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 09:01:01 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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--- Comment #2 from Antony Polukhin <antoshkka at gmail dot com> ---
> So you say that Addrlen(0) and Addrlen(2) are proper constexprs? Of course
Addrlen(1) is not.
Yes. But GCC does not even allow to define the Addrlen function:
https://godbolt.org/z/xqR2Lr
>From gcc-bugs-return-638061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 09:37:00 2019
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |redi at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess that is because potential_constant_expression_1 punts on THROW_EXPR.
There is some code to not recurse if e.g. IF_STMT or COND_EXPR condition
evaluates to constant zero or nonzero, but that is not the case here.
I actually don't know what in the standard requires something like
potential_constant_expression{,_1} rather than just punting during constexpr
evaluation if some non-constexpr construct is encountered. For the cases
listed in dcl.constexpr which may not show up in constexpr functions I thought
that is covered in the parser already.
>From gcc-bugs-return-638062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 09:42:01 2019
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |88945
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we fail to run into the defensive
static inline bool
tree_nop_conversion (const_tree exp)
{
...
inner_type = TREE_TYPE (TREE_OPERAND (exp, 0));
if (!inner_type)
return false;
now because the type is not NULL but error_mark_node. Of course the real
issue is that we are operating on trees with released SSA names at all.
The above is from r158045
2010-04-07 Richard Guenther <rguenther@suse.de>
PR middle-end/42617
* emit-rtl.c (set_mem_attributes_minus_bitpos): Do not
discard plain indirect references.
* fold-const.c (operand_equal_p): Guard against NULL_TREE type.
* tree.c (tree_nop_conversion): Likewise.
where the tree_nop_conversion already has other defenses:
if (TREE_OPERAND (exp, 0) == error_mark_node)
return false;
we can consolidate those checks now.
Index: gcc/tree.c
===================================================================
--- gcc/tree.c (revision 269832)
+++ gcc/tree.c (working copy)
@@ -12812,13 +12812,10 @@ tree_nop_conversion (const_tree exp)
if (!CONVERT_EXPR_P (exp)
&& TREE_CODE (exp) != NON_LVALUE_EXPR)
return false;
- if (TREE_OPERAND (exp, 0) == error_mark_node)
- return false;
outer_type = TREE_TYPE (exp);
inner_type = TREE_TYPE (TREE_OPERAND (exp, 0));
-
- if (!inner_type)
+ if (inner_type == error_mark_node)
return false;
return tree_nop_conversion_p (outer_type, inner_type);
Index: gcc/fold-const.c
===================================================================
--- gcc/fold-const.c (revision 269832)
+++ gcc/fold-const.c (working copy)
@@ -2973,11 +2973,6 @@ operand_equal_p (const_tree arg0, const_
|| TREE_TYPE (arg1) == error_mark_node)
return 0;
- /* Similar, if either does not have a type (like a released SSA name),
- they aren't equal. */
- if (!TREE_TYPE (arg0) || !TREE_TYPE (arg1))
- return 0;
-
/* We cannot consider pointers to different address space equal. */
if (POINTER_TYPE_P (TREE_TYPE (arg0))
&& POINTER_TYPE_P (TREE_TYPE (arg1))
The underlying issue is that IVOPTs removes unused IVs but keeps
loop->control_ivs uncleared (it clears the SCEV cache which also
resets loop->nb_iterations). The best fix for IVOPTs is probably
to simply delay removal of those IVs and also properly free
control-iv information.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88945
[Bug 88945] ICE in fold_convert_loc in FRE when using -fdump-tree-fre-details
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The code in comment 0 compiles with 4.8.5, but gives an error
>
> p = transfer (loc(x), p)
> 1
> Error: Assumed-type argument at (1) is not permitted as actual argument
> to the intrinsic loc
LOC is a GNU extension and it is a matter of choice to accept or reject it in
gfortran.
If the choice is to reject it, then this PR should be closed as INVALID.
With the following patch
--- ../_clean/gcc/fortran/intrinsic.c 2019-03-12 16:12:35.000000000 +0100
+++ gcc/fortran/intrinsic.c 2019-03-20 23:03:17.000000000 +0100
@@ -212,7 +212,8 @@ do_ts29113_check (gfc_intrinsic_sym *spe
&& specific->id != GFC_ISYM_SIZEOF
&& specific->id != GFC_ISYM_UBOUND
&& specific->id != GFC_ISYM_IS_CONTIGUOUS
- && specific->id != GFC_ISYM_C_LOC)
+ && specific->id != GFC_ISYM_C_LOC
+ && specific->id != GFC_ISYM_LOC)
{
gfc_error ("Assumed-type argument at %L is not permitted as actual"
" argument to the intrinsic %s", &a->expr->where,
the modified test with
type(*), target, CONTIGUOUS :: x(:) ! or x(:)
is accepted, but the original test is rejected with
5 | p = transfer (loc(x), p)
| 1
Error: Assumed-rank argument at (1) is only permitted as actual argument to
intrinsic inquiry functions
So far I did not find what to change to make specific->inquiry true for LOC.
Again as it is an extension, it is not an "intrinsic inquiry function"
as defined by the standard.
While looking at trans-intrinsic.c, I see in gfc_conv_intrinsic_loc
/* Create a temporary variable for loc return value. Without this,
we get an error an ICE in gcc/expr.c(expand_expr_addr_expr_1). */
temp_var = gfc_create_var (gfc_get_int_type (gfc_index_integer_kind), NULL);
gfc_add_modify (&se->pre, temp_var, se->expr);
se->expr = temp_var;
and in conv_isocbinding_function
/* TODO -- the following two lines shouldn't be necessary, but if
they're removed, a bug is exposed later in the code path.
This workaround was thus introduced, but will have to be
removed; please see PR 35150 for details about the issue. */
se->expr = convert (pvoid_type_node, se->expr);
se->expr = gfc_evaluate_now (se->expr, &se->pre);
These pieces of code look more as empirical hacks than as solid codes.
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Almost eight years later, is there any chance to fix this PR?
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Subject: [Bug c++/89766] [8 Regression] ICE: canonical types differ for identical types, -std=c++17
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Rimvydas (RJ) from comment #10)
> Using 9.0.1 20190319 as reference several ICE cases reduce down to the same
> snippet (regression on trunk)?
None of these ICE on the trunk, there is a warning on the first one:
warning: inline function ‘constexpr a::a()’ used but never defined
What do you think the compiler does incorrectly? E.g. for the first testcase
I guess it would be rejected if it is actually instantiated, but when not
instantiated, I'd think it falls into the invalid, no diagnostic required
category.
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Subject: [Bug target/89784] Missing AVX512 intrinsics
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-21
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
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Subject: [Bug debug/86549] [meta-bug] -flto -g0 vs. -g issues
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |meta-bug
Priority|P2 |P3
Status|ASSIGNED |NEW
CC| |rguenth at gcc dot gnu.org
Assignee|rguenth at gcc dot gnu.org |unassigned at gcc dot gnu.org
Target Milestone|8.4 |---
Summary|[8/9 Regression] -flto -g0 |[meta-bug] -flto -g0 vs. -g
|vs. -g issues |issues
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Making a meta-bug, all known issues are fixed.
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Subject: [Bug c++/78645] [7/8/9 Regression] ICE on invalid code (Segmentation fault, cxx_eval_call_expression)
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--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in trunk. I'm adding a testcase and removing the regression
marker.
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Subject: [Bug c++/78645] [7/8/9 Regression] ICE on invalid code (Segmentation fault, cxx_eval_call_expression)
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--- Comment #7 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Mar 21 12:05:32 2019
New Revision: 269834
URL: https://gcc.gnu.org/viewcvs?rev=269834&root=gcc&view=rev
Log:
2019-03-21 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/78645
* g++.dg/cpp0x/constexpr-ice20.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-ice20.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/88066] [7 Regression] Relative includes in bits/locale_conv.h should be prefixed
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Mar 21 12:07:10 2019
New Revision: 269835
URL: https://gcc.gnu.org/viewcvs?rev=269835&root=gcc&view=rev
Log:
PR libstdc++/88066 Use <> for includes not ""
These headers were missed in the previous commit for this bug.
There are also several "" includes in the profile mode headers, but
because they're deprecated I'm not fixing them.
* include/backward/hash_map: Use <> for includes not "".
* include/backward/hash_set: Likewise.
* include/backward/strstream: Likewise.
* include/tr1/bessel_function.tcc: Likewise.
* include/tr1/exp_integral.tcc: Likewise.
* include/tr1/legendre_function.tcc: Likewise.
* include/tr1/modified_bessel_func.tcc: Likewise.
* include/tr1/riemann_zeta.tcc: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/backward/hash_map
trunk/libstdc++-v3/include/backward/hash_set
trunk/libstdc++-v3/include/backward/strstream
trunk/libstdc++-v3/include/tr1/bessel_function.tcc
trunk/libstdc++-v3/include/tr1/exp_integral.tcc
trunk/libstdc++-v3/include/tr1/legendre_function.tcc
trunk/libstdc++-v3/include/tr1/modified_bessel_func.tcc
trunk/libstdc++-v3/include/tr1/riemann_zeta.tcc
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Nick Clifton <nickc at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-21
CC| |nickc at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #6 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have proposed a patch to fix this bug:
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01048.html
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Subject: [Bug tree-optimization/89505] [7 Regression] LibreOffice miscompilation starting with r260383
Date: Thu, 21 Mar 2019 12:29:00 -0000
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--- Comment #8 from Matthias Klose <doko at gcc dot gnu.org> ---
Author: doko
Date: Thu Mar 21 12:28:26 2019
New Revision: 269836
URL: https://gcc.gnu.org/viewcvs?rev=269836&root=gcc&view=rev
Log:
2019-03-21 Matthias Klose <doko@ubuntu.com>
Backport from mainline
2019-02-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/89505
* tree-ssa-structalias.c (compute_dependence_clique): Make sure
to handle restrict pointed-to vars with multiple subvars
correctly.
2019-03-21 Matthias Klose <doko@ubuntu.com>
Backport from mainline
2019-02-26 Richard Biener <rguenther@suse.de>
PR tree-optimization/89505
* gcc.dg/torture/pr89505.c: New testcase.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89505.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/tree-ssa-structalias.c
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Subject: [Bug tree-optimization/89505] [7 Regression] LibreOffice miscompilation starting with r260383
Date: Thu, 21 Mar 2019 12:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1
Resolution|--- |FIXED
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89509] restrict doesnt work with subfield accesses
Date: Thu, 21 Mar 2019 12:31:00 -0000
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Bug 89509 depends on bug 89505, which changed state.
Bug 89505 Summary: [7 Regression] LibreOffice miscompilation starting with r260383
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89505
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
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--- Comment #9 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Andrey Belevantsev from comment #8)
> trunk doesn't
> ICE for me.
I don't have a good testcase at hand (it's just a matter of time, though), but
at least the following snippet makes the current trunk ICE:
subroutine kc (IX, L4, PQ)
integer VT, DK, L4, IX, F0
real PQ (L4, L4)
F0 = VT
0010 do VT = 1, 2
end do
if (IX .eq. 0) go to 0020
do VT = 1, L4
end do
go to 0010
0020 do VT = 1, L4
if (VT .ge. 0 .and. VT .le. F0) go to 0030
do DK = VT, L4
PQ (VT, DK) = 0.0
end do
0030 end do
return
end
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190317 -m32 -mcpu=970 -O1
-fschedule-insns2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
-fselective-scheduling2 -ftree-parallelize-loops=2 --param
selsched-max-sched-times=3 -c eowqbvfn.f
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From: "abel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
Date: Thu, 21 Mar 2019 12:46:00 -0000
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--- Comment #10 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #9)
> (In reply to Andrey Belevantsev from comment #8)
> > trunk doesn't
> > ICE for me.
>
> I don't have a good testcase at hand (it's just a matter of time, though),
> but at least the following snippet makes the current trunk ICE:
>
> subroutine kc (IX, L4, PQ)
>
> integer VT, DK, L4, IX, F0
> real PQ (L4, L4)
>
> F0 = VT
>
> 0010 do VT = 1, 2
> end do
>
> if (IX .eq. 0) go to 0020
>
> do VT = 1, L4
> end do
>
> go to 0010
>
> 0020 do VT = 1, L4
> if (VT .ge. 0 .and. VT .le. F0) go to 0030
>
> do DK = VT, L4
> PQ (VT, DK) = 0.0
> end do
> 0030 end do
>
> return
> end
>
> % powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190317 -m32 -mcpu=970 -O1
> -fschedule-insns2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
> -fselective-scheduling2 -ftree-parallelize-loops=2 --param
> selsched-max-sched-times=3 -c eowqbvfn.f
Is it easy for you to check that the above patch fixes also your testcase?
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Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
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--- Comment #11 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Andrey Belevantsev from comment #10)
> Is it easy for you to check that the above patch fixes also your testcase?
Sure, I'll do it tomorrow.
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From: "a.drobyshev at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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Andrey Drobyshev <a.drobyshev at samsung dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45751|0 |1
is obsolete| |
Attachment #45851|0 |1
is obsolete| |
--- Comment #27 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
Created attachment 46001
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46001&action=edit
Updated patch candidate
I've rewritten the previous patch. Now instead of constructing a decl suitable
for one or another section, I just get the right section in assemble_variable
() and emit a dummy global into that. I like this solution better, because it
delivers us from pain of setting the right decl attributes. It seems to work
for the test cases we've introduced so far in this thread.
Please review.
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also consider the equivalent(?)
constexpr foo() { throw 42; } // with or without constexpr
constexpr int Addrlen(int domain) {
switch (domain) {
case 0:
return 0;
case 2:
return 42;
}
foo();
}
if Addrlen is allowed to be constexpr when foo() is not called
[and is not declared constexpr]. And whether foo may be declared
constexpr or not.
>From gcc-bugs-return-638080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 13:18:52 2019
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
Date: Thu, 21 Mar 2019 13:18:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
> Also consider the equivalent(?)
>
> constexpr foo() { throw 42; } // with or without constexpr
>
> constexpr int Addrlen(int domain) {
> switch (domain) {
> case 0:
> return 0;
> case 2:
> return 42;
> }
> foo();
> }
>
> if Addrlen is allowed to be constexpr when foo() is not called
> [and is not declared constexpr]. And whether foo may be declared
> constexpr or not.
foo cannot be constexpr, but no diagnostic is required:
> For a constexpr function or constexpr constructor that is neither defaulted nor a template, if no argument values exist such that an invocation of the function or constructor could be an evaluated subexpression of a core constant expression (7.7), or, for a constructor, a constant initializer for some object (6.8.3.2), the program is ill-formed, no diagnostic required.
Addrlen *can* be constexpr, because there are argument values that allow it to
be evaluated at compile time, without ever reaching the throw (or reaching the
call to the non-constexpr foo).
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Subject: [Bug fortran/54262] LOC shouldn't use copy-in/copy-out
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> So far I did not find what to change to make specific->inquiry true for LOC.
Fixed by the following patch
--- ../_clean/gcc/fortran/intrinsic.c 2019-03-12 16:12:35.000000000 +0100
+++ gcc/fortran/intrinsic.c 2019-03-21 11:24:16.000000000 +0100
@@ -212,7 +212,8 @@ do_ts29113_check (gfc_intrinsic_sym *spe
&& specific->id != GFC_ISYM_SIZEOF
&& specific->id != GFC_ISYM_UBOUND
&& specific->id != GFC_ISYM_IS_CONTIGUOUS
- && specific->id != GFC_ISYM_C_LOC)
+ && specific->id != GFC_ISYM_C_LOC
+ && specific->id != GFC_ISYM_LOC)
{
gfc_error ("Assumed-type argument at %L is not permitted as actual"
" argument to the intrinsic %s", &a->expr->where,
@@ -3234,7 +3235,7 @@ add_functions (void)
make_generic ("verify", GFC_ISYM_VERIFY, GFC_STD_F95);
- add_sym_1 ("loc", GFC_ISYM_LOC, CLASS_IMPURE, ACTUAL_NO, BT_INTEGER, ii,
+ add_sym_1 ("loc", GFC_ISYM_LOC, CLASS_INQUIRY, ACTUAL_NO, BT_INTEGER, ii,
GFC_STD_GNU, gfc_check_loc, NULL, gfc_resolve_loc,
x, BT_UNKNOWN, 0, REQUIRED);
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Subject: [Bug rtl-optimization/85528] ICE in code_motion_process_successors, at sel-sched.c:6403
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Andrey Belevantsev <abel at gcc dot gnu.org> changed:
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CC| |abel at gcc dot gnu.org
--- Comment #1 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
Doesn't ICE for me at r259563 checkout -- anything else needed?
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Subject: [Bug c++/89512] [7/8/9 Regression] ICE in get_expr_operands, at tree-ssa-operands.c:882
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So fixed on trunk?
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Subject: [Bug tree-optimization/88945] ICE in fold_convert_loc in FRE when using -fdump-tree-fre-details
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Bug 88945 depends on bug 89779, which changed state.
Bug 89779 Summary: [9 Regression] internal compiler error: tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in tree_nop_conversion_p, at tree.c:12798
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89779
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----------------------------------------------------------------------------
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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> ---
Fixed (aka mitigated), IVOPTs issue still there, patch waiting for comments.
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar 21 14:27:32 2019
New Revision: 269838
URL: https://gcc.gnu.org/viewcvs?rev=269838&root=gcc&view=rev
Log:
2019-03-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/89779
* tree.c (tree_nop_conversion): Consolidate and fix defensive
checks with respect to released SSA names now having error_mark_node
type.
* fold-const.c (operand_equal_p): Likewise.
* gcc.dg/torture/pr89779.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89779.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug c++/81866] [7/8/9 Regression] ICE with a default template parameter which is a template class nested in a template class
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r149188.
>From gcc-bugs-return-638088-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 14:35:07 2019
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Subject: [Bug rtl-optimization/88652] sel-sched.c:1545:11: runtime error: index 2 out of bounds for type 'long unsigned int [2]'
Date: Thu, 21 Mar 2019 14:35:00 -0000
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Andrey Belevantsev <abel at gcc dot gnu.org> changed:
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--- Comment #2 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #1)
> Any progress on this please?
Maybe a stupid question, but how do I debug this
If I read that source line correctly, we're just assuming that for a
HARD_REG_SET set and a (regno, mode) pair we can always have enough space in
the set for regno, regno + 1, ..., regno + hard_regno_nregs (regno, mode) - 1.
Is that not true anymore?
>From gcc-bugs-return-638089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 14:41:39 2019
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Subject: [Bug rtl-optimization/85528] ICE in code_motion_process_successors, at sel-sched.c:6403
Date: Thu, 21 Mar 2019 14:41:00 -0000
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Andrey Belevantsev from comment #1)
> Doesn't ICE for me at r259563 checkout -- anything else needed?
You may also want -m32, depending on your exact target[1]. I'll try to get
another testcase if needed.
[1] https://gcc.godbolt.org/z/SP6KQX
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Subject: [Bug rtl-optimization/88652] sel-sched.c:1545:11: runtime error: index 2 out of bounds for type 'long unsigned int [2]'
Date: Thu, 21 Mar 2019 14:42:00 -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> ---
(In reply to Andrey Belevantsev from comment #2)
> (In reply to Martin Liška from comment #1)
> > Any progress on this please?
>
> Maybe a stupid question, but how do I debug this
> If I read that source line correctly, we're just assuming that for a
> HARD_REG_SET set and a (regno, mode) pair we can always have enough space in
> the set for regno, regno + 1, ..., regno + hard_regno_nregs (regno, mode) -
> 1. Is that not true anymore?
I suppose place in a gcc_assert (regno + i < FIRST_PSEUDO_REGISTER) and have it
assert?
I don't see where the code checks that regno is a hard register. With
the following I get
during RTL pass: sched1
pr87759.c:39:1: internal compiler error: in verify_target_availability, at
sel-sched.c:1545
39 | }
| ^
0x110f7c3 verify_target_availability
/space/rguenther/src/svn/trunk2/gcc/sel-sched.c:1545
0x110fc31 find_best_reg_for_expr
/space/rguenther/src/svn/trunk2/gcc/sel-sched.c:1680
0x11147e9 fill_vec_av_set
/space/rguenther/src/svn/trunk2/gcc/sel-sched.c:3800
0x1114fea fill_ready_list
...
Index: gcc/sel-sched.c
===================================================================
--- gcc/sel-sched.c (revision 269832)
+++ gcc/sel-sched.c (working copy)
@@ -1542,6 +1542,7 @@ verify_target_availability (expr_t expr,
{
if (bitmap_bit_p (used_regs, regno + i))
live_available = false;
+ gcc_assert (regno + i < FIRST_PSEUDO_REGISTER);
if (TEST_HARD_REG_BIT (reg_rename_p->unavailable_hard_regs, regno + i))
hard_available = false;
}
(gdb) p regno
$1 = 158
>From gcc-bugs-return-638091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 15:06:54 2019
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 15:06:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Somewhat cleaned up test:
struct A
{
A (int);
};
struct BB
{
A v;
};
struct B : BB
{};
B
foo ()
{
return {{B {{42}}}};
}
>From gcc-bugs-return-638092-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 15:16:04 2019
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Subject: [Bug rtl-optimization/88652] sel-sched.c:1545:11: runtime error: index 2 out of bounds for type 'long unsigned int [2]'
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--- Comment #4 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> (In reply to Andrey Belevantsev from comment #2)
> > (In reply to Martin Liška from comment #1)
> > > Any progress on this please?
> >
> > Maybe a stupid question, but how do I debug this
> > If I read that source line correctly, we're just assuming that for a
> > HARD_REG_SET set and a (regno, mode) pair we can always have enough space in
> > the set for regno, regno + 1, ..., regno + hard_regno_nregs (regno, mode) -
> > 1. Is that not true anymore?
>
> I suppose place in a gcc_assert (regno + i < FIRST_PSEUDO_REGISTER) and have
> it
> assert?
Looks like you're right :) I'll fix that, then.
>
> I don't see where the code checks that regno is a hard register. With
> the following I get
>
> during RTL pass: sched1
> pr87759.c:39:1: internal compiler error: in verify_target_availability, at
> sel-sched.c:1545
> 39 | }
> | ^
> 0x110f7c3 verify_target_availability
> /space/rguenther/src/svn/trunk2/gcc/sel-sched.c:1545
> 0x110fc31 find_best_reg_for_expr
> /space/rguenther/src/svn/trunk2/gcc/sel-sched.c:1680
> 0x11147e9 fill_vec_av_set
> /space/rguenther/src/svn/trunk2/gcc/sel-sched.c:3800
> 0x1114fea fill_ready_list
> ...
>
> Index: gcc/sel-sched.c
> ===================================================================
> --- gcc/sel-sched.c (revision 269832)
> +++ gcc/sel-sched.c (working copy)
> @@ -1542,6 +1542,7 @@ verify_target_availability (expr_t expr,
> {
> if (bitmap_bit_p (used_regs, regno + i))
> live_available = false;
> + gcc_assert (regno + i < FIRST_PSEUDO_REGISTER);
> if (TEST_HARD_REG_BIT (reg_rename_p->unavailable_hard_regs, regno +
> i))
> hard_available = false;
> }
>
> (gdb) p regno
> $1 = 158
>From gcc-bugs-return-638093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 15:31:05 2019
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 15:31:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And an extended test:
// PR c++/89214
// { dg-do compile { target c++17 } }
struct A
{
A (int);
};
struct BB
{
A a;
};
struct B : BB
{
};
void
foo ()
{
B b1 = {42};
B b2 = {{42}};
B b3 = {{{42}}};
B b4 = B{42};
B b5 = B{{42}};
B b6 = B{{{42}}};
B b7 = {B{42}};
B b8 = {B{{42}}};
B b9 = {B{{{42}}}};
B b10 = {{B{42}}};
B b11 = {{B{{42}}}};
B b12 = {{B{{{42}}}}};
B bb1{42};
B bb2{{42}};
B bb3{{{42}}};
B bb7{B{42}};
B bb8{B{{42}}};
B bb9{B{{{42}}}};
B bb10{{B{42}}};
B bb11{{B{{42}}}};
B bb12{{B{{{42}}}}};
}
>From gcc-bugs-return-638094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 15:53:20 2019
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Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
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--- Comment #12 from Arseny Solokha <asolokha at gmx dot com> ---
Meanwhile, here's a C testcase that fails w/ the latest trunk snapshot on
x86_64:
__int128 jv;
void
zm (__int128 g9, unsigned short int sm, short int hk)
{
while (hk < 1)
{
if (jv == 0)
sm *= g9;
if (sm < jv)
hk = sm;
g9 |= sm == hk;
}
}
% x86_64-unknown-linux-gnu-gcc-9.0.0-alpha20190317 -march=bonnell -O1
-fpeephole2 -fschedule-insns2 -fsel-sched-pipelining -fselective-scheduling2
-ftree-loop-if-convert -fno-if-conversion -fno-move-loop-invariants
-fno-split-wide-types -fno-tree-dominator-opts -c erji5uml.c
>From gcc-bugs-return-638095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 15:59:15 2019
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From: "jeremy at jeremysanders dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
Date: Thu, 21 Mar 2019 15:59:00 -0000
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--- Comment #6 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
I think I have worked out where the problem lies. The code contains fixed-sized
arrays of types containing allocatable arrays and other nested types with
allocatable arrays. If I switch the fixed-sized declarations to allocatable,
then the compile time and output size drastically reduce.
Changing three of the declarations in the source code to allocatable fixes the
problem (see attached test case patch).
I've also made a much smaller testcase (only 90 lines) which highlights the
problem. This source code takes 50s to compile on my system. Commenting out
line 73 and uncommenting line 74 reduces the compile time to 0.4s.
>From gcc-bugs-return-638096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 16:00:47 2019
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #7 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
Created attachment 46002
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46002&action=edit
Tiny patch to fix testcase
>From gcc-bugs-return-638097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 16:01:14 2019
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
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--- Comment #28 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Patches should go to gcc-patches@. That is where reviews happen, too.
>From gcc-bugs-return-638098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 16:01:39 2019
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Subject: [Bug fortran/87352] [7/8/9 Regression] Large stack usage with new gfortran
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--- Comment #8 from Jeremy Sanders <jeremy at jeremysanders dot net> ---
Created attachment 46003
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Much smaller testcase. Switch 73/74 to see the difference.
>From gcc-bugs-return-638099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 16:29:37 2019
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Subject: [Bug c++/80559] [7/8/9 Regression] Segmentation fault on invalid initializer list template arguments
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |paolo.carlini at oracle dot com
--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> ---
The ICE cannot be reproduced in trunk. Apparently it got fixed for 8.1.0 and
the fix backported to 7.2.0 too. Thus I think we can close this completely or
maybe remove the regression markers and change it to a pure diagnostic
enhancement issue, because certainly the series of four identical error
messages about template argument 2 doesn't make any sense. Barring different
opinions I'm going to do the latter in a day or so.
>From gcc-bugs-return-638100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 16:38:14 2019
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Subject: [Bug target/89784] Missing AVX512 intrinsics
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46004
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gcc9-pr89784.patch
Untested patch, so far without testsuite coverage.
>From gcc-bugs-return-638101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:00:55 2019
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Subject: [Bug ada/89786] New: ice in add_expr, at tree.c:7767
Date: Thu, 21 Mar 2019 17:00:00 -0000
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Bug ID: 89786
Summary: ice in add_expr, at tree.c:7767
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I just tried out some Ada testsuite code:
This works:
$ ~/gcc/results/bin/gcc -c -I./gnat.dg/ -I- ./gnat.dg/slice7.adb
slice7.adb:27:03: warning: variable "Obj" is read but never assigned
$
This doesn't:
$ ~/gcc/results/bin/gcc -c -I./gnat.dg/ -O2 -I- ./gnat.dg/slice7.adb
slice7.adb:27:03: warning: variable "Obj" is read but never assigned
+===========================GNAT BUG DETECTED==============================+
| 20190319 (experimental) (x86_64-pc-linux-gnu) GCC error: |
| in add_expr, at tree.c:7767 |
| Error detected around ./gnat.dg/slice7.adb:35:3
The problem seems to occur sometime before revision 269500.
slice7.adb is from the gcc/testsuite directory.
>From gcc-bugs-return-638102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:21:58 2019
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Subject: [Bug fortran/89787] New: Fortran OpenACC 'routine' directive: parent namespace(s)
Date: Thu, 21 Mar 2019 17:21:00 -0000
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Bug ID: 89787
Summary: Fortran OpenACC 'routine' directive: parent
namespace(s)
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See the suggested 'gfc_find_symtree' changes and then 'gfc_find_sym_tree'
comment in <https://gcc.gnu.org/ml/fortran/2018-10/msg00008.html>. We'll need
to understand how to constuct such (nested?) namespaces, need test cases.
>From gcc-bugs-return-638103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:22:30 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501
--- Comment #29 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
(In reply to Segher Boessenkool from comment #28)
> Patches should go to gcc-patches@. That is where reviews happen, too.
That's still a patch candidate. I want to hear other folks' opinion before it
goes to gcc-patches@.
>From gcc-bugs-return-638104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:33:37 2019
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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89788] New: trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]: (error) Null pointer dereference
Date: Thu, 21 Mar 2019 17:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89788
Bug ID: 89788
Summary: trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]
: (error) Null pointer dereference
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
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Source code is
DIR *dir = opendir (path);
if (dir == NULL)
COIERROR ("Cannot open directory %s.", dir);
maybe better code:
DIR *dir = opendir (path);
if (dir == NULL)
COIERROR ("Cannot open directory %s.", path);
>From gcc-bugs-return-638105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:45:47 2019
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Subject: [Bug tree-optimization/89789] New: [9 Regression] Compile time hog during RPO VN
Date: Thu, 21 Mar 2019 17:45:00 -0000
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Bug ID: 89789
Summary: [9 Regression] Compile time hog during RPO VN
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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gcc-9.0.0-alpha20190317 snapshot (r269746) takes indefinite time when compiling
the following testcase at -O2 (-O3, -Ofast, -Os):
int x2;
void
m2 (void)
{
goto gg;
int fz, vh = 0;
for (fz = 0; fz < 1; ++fz)
{
vh ^= x2;
if (0)
{
gg:
x2 %= 1;
x2 += vh;
}
}
}
% timeout 10 gcc-9.0.0-alpha20190317 -O2 -c nzl2rb2h.c
zsh: exit 124 timeout 10 gcc-9.0.0-alpha20190317 -O2 -c nzl2rb2h.c
>From gcc-bugs-return-638106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 17:49:16 2019
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From: "belyshev at depni dot sinp.msu.ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89790] New: [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
Date: Thu, 21 Mar 2019 17:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89790
Bug ID: 89790
Summary: [9 Regression] ICE segfault in operand_equal_p() at
fold-const.c:3000 with -Wduplicated-cond since r269838
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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CC: rguenth at gcc dot gnu.org
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Fix for bug 89779 (r269838) caused ICE during gdb build. Reduced testcase,
compile with -O -Wduplicated-cond:
template <typename> class a {
typedef a b;
template <typename> void c();
};
template <typename d> template <typename> void a<d>::c() {
int f;
b g;
if (g == 0)
;
else if (f)
{
}
}
Partial backtrace:
Program received signal SIGSEGV, Segmentation fault.
operand_equal_p (arg0=0x7ffff76df7e0, arg1=0x7ffff76df740, flags=16) at
../../gcc/gcc/fold-const.c:3000
3000 if (TYPE_UNSIGNED (TREE_TYPE (arg0)) != TYPE_UNSIGNED (TREE_TYPE
(arg1))
(gdb) bt
#0 operand_equal_p (arg0=0x7ffff76df7e0, arg1=0x7ffff76df740, flags=16) at
../../gcc/gcc/fold-const.c:3000
#1 0x0000000000c9ac8b in operand_equal_p (arg0=arg0@entry=0x7ffff76df7e0,
arg1=arg1@entry=0x7ffff76df740,
flags=flags@entry=0) at ../../gcc/gcc/fold-const.c:2950
#2 0x0000000000b0c572 in warn_duplicated_cond_add_or_warn (loc=<optimized
out>, cond=cond@entry=0x7ffff76df7e0,
chain=chain@entry=0x7fffffffdd88) at ../../gcc/gcc/c-family/c-warn.c:2318
#3 0x00000000009c4846 in cp_parser_selection_statement (chain=<optimized out>,
if_p=0x0, parser=0x7ffff7fd0ab0)
at ../../gcc/gcc/cp/parser.c:11784
#4 cp_parser_statement (parser=0x7ffff7fd0ab0, in_statement_expr=0x0,
in_compound=<optimized out>, if_p=0x0,
chain=<optimized out>, loc_after_labels=0x7fffffffddec) at
../../gcc/gcc/cp/parser.c:11147
#5 0x00000000009de4f8 in cp_parser_implicitly_scoped_statement
(parser=parser@entry=0x7ffff7fd0ab0,
if_p=if_p@entry=0x0, guard_tinfo=..., chain=0x25323d0) at
../../gcc/gcc/cp/parser.c:13004
#6 0x00000000009c4788 in cp_parser_selection_statement (chain=<optimized out>,
if_p=0x0, parser=0x7ffff7fd0ab0)
at ../../gcc/gcc/cp/parser.c:11865
...
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Thu, 21 Mar 2019 18:22:00 -0000
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--- Comment #4 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisect points to r151362.
commit ff79704e04af919c4fe501c7dceca8b21cced614
Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Sep 3 05:24:57 2009 +0000
* toplev.c (process_options): Enable var-tracking-assignments
by default if var-tracking is enabled.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151362
138bc75d-0d04-0410-961f-82ee72b054a4
>From gcc-bugs-return-638108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 18:36:25 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 18:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89214
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
>From gcc-bugs-return-638109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 18:39:31 2019
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89791] New: gcc generates wrong debug information at -O3
Date: Thu, 21 Mar 2019 18:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89791
Bug ID: 89791
Summary: gcc generates wrong debug information at -O3
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: qrzhang at gatech dot edu
Target Milestone: ---
It affects gcc-4.6 to gcc-trunk. The expected output is "i=7" or <optimized
out>. With "-O3", it outputs "i=0".
I am using two files since "noipa" attribute directive is not supported in
early gcc versions.
Bisect points to r154402.
commit 43e54ec3e93dd2ef495375ead1f1eac467a727d1
Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat Nov 21 05:06:24 2009 +0000
* tree-ssa.c (find_released_ssa_name): Handle NULL wi.
(insert_debug_temp_for_var_def): Handle degenerate PHI nodes.
(insert_debug_temps_for_defs): Handle PHI nodes.
* tree-ssa-dom.c (degenerate_phi_result): Don't crash on released
SSA names.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@154402
138bc75d-0d04-0410-961f-82ee72b054a4
$ gcc-trunk -v
gcc version 9.0.1 20190321 (experimental) [trunk revision 269832] (GCC)
$ cat abc.c
int main() {
int i = 0;
for (; i < 7; i++)
;
optimize_me_not();
}
$ cat outer.c
void optimize_me_not() {}
# correct output #
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x40046d: file abc.c, line 5.
Breakpoint 1, main () at abc.c:5
5 optimize_me_not();
$1 = 7
# Wrong output #
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x400380: file abc.c, line 5.
Breakpoint 1, main () at abc.c:5
5 optimize_me_not();
$1 = 0
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 18:44:00 -0000
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Another version, without a converting ctor:
struct B {
int c;
};
struct D : B { };
void
fn ()
{
D b{{D{42}}};
}
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Subject: [Bug fortran/29383] Fortran 2003/F95[TR15580:1999]: Floating point exception (IEEE) support
Date: Thu, 21 Mar 2019 18:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29383
--- Comment #17 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 18:54:50 2019
New Revision: 269845
URL: https://gcc.gnu.org/viewcvs?rev=269845&root=gcc&view=rev
Log:
[testsuite, Fortran] Consistently set 'DEFAULT_FFLAGS'
In the same 'runtest' instance, 'global' variables persist from one '*.exp'
file to another.
All other '*.exp' files are using " -pedantic-errors" instead of the empty
string as the default for 'DEFAULT_FFLAGS'. Thus this setting of
'DEFAULT_FFLAGS' is not idempotent, depends on whether
'gfortran.dg/ieee/ieee.exp', or an other defining '*.exp' file is executed
first.
gcc/testsuite/
PR fortran/29383
* gfortran.dg/ieee/ieee.exp (DEFAULT_FFLAGS): Set the same as in
other '*.exp' files.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/ieee/ieee.exp
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Subject: [Bug fortran/29383] Fortran 2003/F95[TR15580:1999]: Floating point exception (IEEE) support
Date: Thu, 21 Mar 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29383
--- Comment #18 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 18:57:39 2019
New Revision: 269846
URL: https://gcc.gnu.org/viewcvs?rev=269846&root=gcc&view=rev
Log:
[testsuite, Fortran] Consistently set 'DEFAULT_FFLAGS'
In the same 'runtest' instance, 'global' variables persist from one '*.exp'
file to another.
All other '*.exp' files are using " -pedantic-errors" instead of the empty
string as the default for 'DEFAULT_FFLAGS'. Thus this setting of
'DEFAULT_FFLAGS' is not idempotent, depends on whether
'gfortran.dg/ieee/ieee.exp', or an other defining '*.exp' file is executed
first.
gcc/testsuite/
PR fortran/29383
* gfortran.dg/ieee/ieee.exp (DEFAULT_FFLAGS): Set the same as in
other '*.exp' files.
trunk r269845
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/ieee/ieee.exp
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Subject: [Bug fortran/29383] Fortran 2003/F95[TR15580:1999]: Floating point exception (IEEE) support
Date: Thu, 21 Mar 2019 18:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29383
--- Comment #19 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 18:57:56 2019
New Revision: 269847
URL: https://gcc.gnu.org/viewcvs?rev=269847&root=gcc&view=rev
Log:
[testsuite, Fortran] Consistently set 'DEFAULT_FFLAGS'
In the same 'runtest' instance, 'global' variables persist from one '*.exp'
file to another.
All other '*.exp' files are using " -pedantic-errors" instead of the empty
string as the default for 'DEFAULT_FFLAGS'. Thus this setting of
'DEFAULT_FFLAGS' is not idempotent, depends on whether
'gfortran.dg/ieee/ieee.exp', or an other defining '*.exp' file is executed
first.
gcc/testsuite/
PR fortran/29383
* gfortran.dg/ieee/ieee.exp (DEFAULT_FFLAGS): Set the same as in
other '*.exp' files.
trunk r269845
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/ieee/ieee.exp
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Subject: [Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg
Date: Thu, 21 Mar 2019 19:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56408
--- Comment #13 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:16:54 2019
New Revision: 269849
URL: https://gcc.gnu.org/viewcvs?rev=269849&root=gcc&view=rev
Log:
[testsuite, Fortran] Apply DejaGnu 1.4.4 work-around also to
'gfortran.dg/coarray/caf.exp:dg-compile-aux-modules'
See trunk r215293. This unifies all 'dg-compile-aux-modules' instances.
gcc/testsuite/
PR fortran/56408
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Workaround
missing nexted dg-test call support in dejaGNU 1.4.4.
trunk r269848
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/coarray/caf.exp
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Subject: [Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg
Date: Thu, 21 Mar 2019 19:17:00 -0000
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--- Comment #12 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:16:29 2019
New Revision: 269848
URL: https://gcc.gnu.org/viewcvs?rev=269848&root=gcc&view=rev
Log:
[testsuite, Fortran] Apply DejaGnu 1.4.4 work-around also to
'gfortran.dg/coarray/caf.exp:dg-compile-aux-modules'
See trunk r215293. This unifies all 'dg-compile-aux-modules' instances.
gcc/testsuite/
PR fortran/56408
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Workaround
missing nexted dg-test call support in dejaGNU 1.4.4.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/coarray/caf.exp
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Subject: [Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg
Date: Thu, 21 Mar 2019 19:17:00 -0000
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--- Comment #14 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:17:12 2019
New Revision: 269850
URL: https://gcc.gnu.org/viewcvs?rev=269850&root=gcc&view=rev
Log:
[testsuite, Fortran] Apply DejaGnu 1.4.4 work-around also to
'gfortran.dg/coarray/caf.exp:dg-compile-aux-modules'
See trunk r215293. This unifies all 'dg-compile-aux-modules' instances.
gcc/testsuite/
PR fortran/56408
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Workaround
missing nexted dg-test call support in dejaGNU 1.4.4.
trunk r269848
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/coarray/caf.exp
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Subject: [Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg
Date: Thu, 21 Mar 2019 19:31:00 -0000
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--- Comment #16 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:31:09 2019
New Revision: 269852
URL: https://gcc.gnu.org/viewcvs?rev=269852&root=gcc&view=rev
Log:
[testsuite] Fix 'dg-compile-aux-modules' diagnostic
gcc/testsuite/
PR fortran/56408
* gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
(dg-compile-aux-modules): Fix diagnostic.
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Likewise.
* gfortran.dg/dg.exp (dg-compile-aux-modules): Likewise.
trunk r269851
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/coarray/caf.exp
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/dg.exp
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56408
--- Comment #15 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:29:57 2019
New Revision: 269851
URL: https://gcc.gnu.org/viewcvs?rev=269851&root=gcc&view=rev
Log:
[testsuite] Fix 'dg-compile-aux-modules' diagnostic
gcc/testsuite/
PR fortran/56408
* gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
(dg-compile-aux-modules): Fix diagnostic.
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Likewise.
* gfortran.dg/dg.exp (dg-compile-aux-modules): Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
trunk/gcc/testsuite/gfortran.dg/coarray/caf.exp
trunk/gcc/testsuite/gfortran.dg/dg.exp
>From gcc-bugs-return-638119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 19:32:06 2019
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Subject: [Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56408
--- Comment #17 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:31:30 2019
New Revision: 269853
URL: https://gcc.gnu.org/viewcvs?rev=269853&root=gcc&view=rev
Log:
[testsuite] Fix 'dg-compile-aux-modules' diagnostic
gcc/testsuite/
PR fortran/56408
* gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
(dg-compile-aux-modules): Fix diagnostic.
* gfortran.dg/coarray/caf.exp (dg-compile-aux-modules): Likewise.
* gfortran.dg/dg.exp (dg-compile-aux-modules): Likewise.
trunk r269851
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gcc.target/powerpc/ppc-fortran/ppc-fortran.exp
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/coarray/caf.exp
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/dg.exp
>From gcc-bugs-return-638120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 19:42:11 2019
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 19:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89214
--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And a fix:
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -5978,6 +5978,18 @@ reshape_init_class (tree type, reshape_iter *d, bool
first_initializer_p,
field = next_initializable_field (DECL_CHAIN (field));
}
+ /* "If T is a class type and the initializer list has a single
+ element of type cv U, where U is T or a class derived from T,
+ the object is initialized from that element." */
+ if (cxx_dialect >= cxx11
+ && BRACE_ENCLOSED_INITIALIZER_P (new_init)
+ && CONSTRUCTOR_NELTS (new_init) == 1)
+ {
+ tree elt = CONSTRUCTOR_ELT (new_init, 0)->value;
+ if (reference_related_p (type, TREE_TYPE (elt)))
+ return elt;
+ }
+
return new_init;
}
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Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
Date: Thu, 21 Mar 2019 19:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
--- Comment #12 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:44:45 2019
New Revision: 269855
URL: https://gcc.gnu.org/viewcvs?rev=269855&root=gcc&view=rev
Log:
[PR72741] Encode OpenACC 'routine' directive's level of parallelism inside
Fortran module files
If 'use'ing with an old GCC a new module file (with OpenACC 'routine'
directive's level of parallelism encoded), then that expectedly fails as
follows:
f951: Fatal Error: Reading module 'routine_module_mod_1' at line 27 column
21: find_enum(): Enum not found
If 'use'ing with a new GCC an old module file (without OpenACC 'routine'
directive's level of parallelism encoded), then that (silently) continues to
accept the module file, and will proceed with the previous, erroneous behavior.
These seem to be acceptable compromises, instead of incrementing 'MOD_VERSION'.
gcc/fortran/
PR fortran/72741
* module.c (verify_OACC_ROUTINE_LOP_NONE): New function.
(enum ab_attribute): Add AB_OACC_ROUTINE_LOP_GANG,
AB_OACC_ROUTINE_LOP_WORKER, AB_OACC_ROUTINE_LOP_VECTOR,
AB_OACC_ROUTINE_LOP_SEQ.
(attr_bits): Add these.
(mio_symbol_attribute): Handle these.
gcc/testsuite/
PR fortran/72741
* gfortran.dg/goacc/routine-module-1.f90: New file.
* gfortran.dg/goacc/routine-module-2.f90: Likewise.
* gfortran.dg/goacc/routine-module-mod-1.f90: Likewise.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/routine-module-1.f90
trunk/gcc/testsuite/gfortran.dg/goacc/routine-module-2.f90
trunk/gcc/testsuite/gfortran.dg/goacc/routine-module-mod-1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/module.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
--- Comment #13 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 19:54:51 2019
New Revision: 269856
URL: https://gcc.gnu.org/viewcvs?rev=269856&root=gcc&view=rev
Log:
[PR72741] The name in a Fortran OpenACC 'routine' directive refers to the
containing subroutine or function
gcc/fortran/
PR fortran/72741
* openmp.c (gfc_match_oacc_routine): Clarify.
gcc/testsuite/
PR fortran/72741
* gfortran.dg/goacc/routine-module-mod-1.f90: Update.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/routine-module-mod-1.f90
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Subject: [Bug fortran/89773] Fortran OpenACC 'routine' directive refuses procedures with implicit EXTERNAL attribute
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89773
--- Comment #1 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 20:02:42 2019
New Revision: 269857
URL: https://gcc.gnu.org/viewcvs?rev=269857&root=gcc&view=rev
Log:
[PR89773] Fortran OpenACC 'routine' directive refuses procedures with implicit
EXTERNAL attribute
gcc/fortran/
PR fortran/89773
* gfortran.h (gfc_oacc_routine_name): Add loc member.
(gfc_resolve_oacc_routines): Declare.
* openmp.c (gfc_match_oacc_routine): Move some error checking
into...
(gfc_resolve_oacc_routines): ... this new function.
* resolve.c (resolve_codes): Call it.
gcc/testsuite/
PR fortran/89773
* gfortran.dg/goacc/pr89773.f90: New file.
* gfortran.dg/goacc/pr77765.f90: Adjust.
* gfortran.dg/goacc/routine-6.f90: Adjust, and extend.
Added:
trunk/gcc/testsuite/gfortran.dg/goacc/pr89773.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/openmp.c
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/goacc/pr77765.f90
trunk/gcc/testsuite/gfortran.dg/goacc/routine-6.f90
>From gcc-bugs-return-638124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 20:04:33 2019
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Subject: [Bug fortran/89787] Fortran OpenACC 'routine' directive: parent namespace(s)
Date: Thu, 21 Mar 2019 20:04:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-03-21
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=78377
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
What is this PR about?
Note that it may be related to pr78377 item 5.
>From gcc-bugs-return-638125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 20:07:51 2019
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Subject: [Bug fortran/78377] [cleanup] gfc_get_tbp_symtree vs. gfc_get_sym_tree
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This kind of PRs is a nightmare when sorting the bug list.
>From gcc-bugs-return-638126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 20:10:16 2019
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Subject: [Bug middle-end/89790] [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
Date: Thu, 21 Mar 2019 20:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89790
David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
I see something similar during bootstrap with -Wduplicated-cond.
0xc91b30 warn_duplicated_cond_add_or_warn(unsigned int, tree_node*,
vec<tree_node*, va_heap, vl_ptr>**)
../../trunk/gcc/c-family/c-warn.c:2318
0xa5dfd4 cp_parser_selection_statement
../../trunk/gcc/cp/parser.c:11784
0xa5ccc4 cp_parser_statement
../../trunk/gcc/cp/parser.c:11147
0xa6100c cp_parser_implicitly_scoped_statement
../../trunk/gcc/cp/parser.c:13004
This used to work at revision 269800 and doesn't at 269850.
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/72741] Fortran OpenACC routine directive doesn't properly handle clauses specifying the level of parallelism
Date: Thu, 21 Mar 2019 20:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72741
--- Comment #14 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Thu Mar 21 20:13:44 2019
New Revision: 269858
URL: https://gcc.gnu.org/viewcvs?rev=269858&root=gcc&view=rev
Log:
[PR72741] Properly handle clauses specifying the level of parallelism for
'external' Fortran OpenACC routines
..., so as to also for these enable the generic middle end OMP code to verify
proper nesting of loops/routines regarding their levels of parallelism.
gcc/fortran/
PR fortran/72741
* openmp.c (gfc_match_oacc_routine): Set the level of parallelism
for all variants.
(gfc_resolve_oacc_routines): Call gfc_add_omp_declare_target.
gcc/testsuite/
PR fortran/72741
* c-c++-common/goacc/routine-3-extern.c: New file.
* c-c++-common/goacc/routine-3.c: Adjust.
* c-c++-common/goacc/routine-4-extern.c: New file.
* c-c++-common/goacc/routine-4.c: Adjust.
* gfortran.dg/goacc/routine-module-3.f90: New file.
* gfortran.dg/goacc/routine-external-level-of-parallelism-1.f: New
file.
* gfortran.dg/goacc/routine-external-level-of-parallelism-2.f:
Likewise.
Added:
trunk/gcc/testsuite/c-c++-common/goacc/routine-3-extern.c
- copied, changed from r269857,
trunk/gcc/testsuite/c-c++-common/goacc/routine-3.c
trunk/gcc/testsuite/c-c++-common/goacc/routine-4-extern.c
- copied, changed from r269857,
trunk/gcc/testsuite/c-c++-common/goacc/routine-4.c
trunk/gcc/testsuite/gfortran.dg/goacc/routine-external-level-of-parallelism-1.f
trunk/gcc/testsuite/gfortran.dg/goacc/routine-external-level-of-parallelism-2.f
trunk/gcc/testsuite/gfortran.dg/goacc/routine-module-3.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/goacc/routine-3.c
trunk/gcc/testsuite/c-c++-common/goacc/routine-4.c
>From gcc-bugs-return-638128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 20:45:58 2019
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89454] gcc generates wrong debug information at -Og
Date: Thu, 21 Mar 2019 20:45:00 -0000
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--- Comment #1 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisect points to r151362.
commit ff79704e04af919c4fe501c7dceca8b21cced614
Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Sep 3 05:24:57 2009 +0000
* toplev.c (process_options): Enable var-tracking-assignments
by default if var-tracking is enabled.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151362
138bc75d-0d04-0410-961f-82ee72b054a4
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Subject: [Bug debug/89454] gcc generates wrong debug information at -Og
Date: Thu, 21 Mar 2019 20:47:00 -0000
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--- Comment #2 from Qirun Zhang <qrzhang at gatech dot edu> ---
(In reply to Qirun Zhang from comment #1)
> Bisect points to r151362.
>
> commit ff79704e04af919c4fe501c7dceca8b21cced614
> Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date: Thu Sep 3 05:24:57 2009 +0000
>
> * toplev.c (process_options): Enable var-tracking-assignments
> by default if var-tracking is enabled.
>
>
> git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151362
> 138bc75d-0d04-0410-961f-82ee72b054a4
Bisected the result with "-O3" since gcc-4.4 does not support "-Og".
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Thu, 21 Mar 2019 20:58:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01075.html
>From gcc-bugs-return-638131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Mar 21 21:09:20 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/54262] LOC shouldn't use copy-in/copy-out
Date: Thu, 21 Mar 2019 21:09:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Regtested cleanly with the patch in comment 4.
If I remove the lines
se->expr = convert (pvoid_type_node, se->expr);
se->expr = gfc_evaluate_now (se->expr, &se->pre);
in conv_isocbinding_function, on darwin I get a warning at link time with the
tests in f03gl:
ld: warning: PIE disabled. Absolute addressing (perhaps -mdynamic-no-pic) not
allowed in code signed PIE, but used in lC0 from
/var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccjizw7H.o. To fix this
warning, don't compile with -mdynamic-no-pic or link with -Wl,-no_pie
However all the tests I have tried succeed.
I also see
FAIL: gfortran.dg/c_loc_test_22.f90 -O scan-tree-dump-times original
"D.[0-9]+ = parm.[0-9]+.data;[^;]+ptr[1-4] = D.[0-9]+;" 4 (found 0 times)
the
D.* = parm.*.data;
ptr* = D.*;
are replaced with
ptr* = parm.*.data;
If I remove the lines
temp_var = gfc_create_var (gfc_get_int_type (gfc_index_integer_kind), NULL);
gfc_add_modify (&se->pre, temp_var, se->expr);
se->expr = temp_var;
in gfc_conv_intrinsic_loc, I see
FAIL: gfortran.dg/loc_1.f90 -O* (test for excess errors)
due to
% gfc /opt/gcc/_clean/gcc/testsuite/gfortran.dg/loc_1.f90
Undefined symbols for architecture x86_64:
"_targ.3866", referenced from:
lC0 in ccakGHjX.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Thu, 21 Mar 2019 21:48:00 -0000
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--- Comment #5 from Qirun Zhang <qrzhang at gatech dot edu> ---
(In reply to Qirun Zhang from comment #4)
> Bisect points to r151362.
>
> commit ff79704e04af919c4fe501c7dceca8b21cced614
> Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date: Thu Sep 3 05:24:57 2009 +0000
>
> * toplev.c (process_options): Enable var-tracking-assignments
> by default if var-tracking is enabled.
>
>
> git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151362
> 138bc75d-0d04-0410-961f-82ee72b054a4
Sorry... Please discard this comment. This was meant for another bug. Let me
post the bisect result in the following comment..
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Thu, 21 Mar 2019 21:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89463
--- Comment #6 from Qirun Zhang <qrzhang at gatech dot edu> ---
As mentioned in my earlier comment, the revision should be between gcc-5 and
gcc-6.
Bisect points to r239357.
commit ec969ce4161538b561592a032eca6dcfaf513596
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Aug 11 09:02:04 2016 +0000
2016-08-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/72772
* cfgloopmanip.c (create_preheader): Use split_edge if there
is a single loop entry, avoiding degenerate PHIs.
* gcc.dg/graphite/pr35356-1.c: Adjust.
* gcc.dg/tree-ssa/pr59597.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239357
138bc75d-0d04-0410-961f-82ee72b054a4
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Subject: [Bug c++/89767] [8/9 Regression] ICE with tuple and optimization
Date: Thu, 21 Mar 2019 22:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89767
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 21 22:01:02 2019
New Revision: 269860
URL: https://gcc.gnu.org/viewcvs?rev=269860&root=gcc&view=rev
Log:
PR c++/89767
* parser.c (cp_parser_lambda_introducer): Add ids and first_capture_id
variables, check for duplicates in this function.
* lambda.c (add_capture): Don't check for duplicates nor use
IDENTIFIER_MARKED.
(register_capture_members): Don't clear IDENTIFIER_MARKED here.
* g++.dg/cpp1y/lambda-init18.C: New test.
* g++.dg/cpp1y/lambda-init19.C: New test.
* g++.dg/cpp1y/pr89767.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-init18.C
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-init19.C
trunk/gcc/testsuite/g++.dg/cpp1y/pr89767.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/71446] Incorrect overload resolution when using designated initializers
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 21 22:03:07 2019
New Revision: 269861
URL: https://gcc.gnu.org/viewcvs?rev=269861&root=gcc&view=rev
Log:
PR c++/71446
* call.c (filed_in_pset): Change pset from hash_set<tree> * to
hash_set<tree, true> &, adjust uses accordingly.
(build_aggr_conv): Change pset from hash_set<tree> *
to hash_set<tree, true>. Replace goto fail; with return NULL;,
adjust pset uses.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
Date: Thu, 21 Mar 2019 22:05:00 -0000
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar 21 22:04:29 2019
New Revision: 269862
URL: https://gcc.gnu.org/viewcvs?rev=269862&root=gcc&view=rev
Log:
PR lto/89692
* tree.c (fld_type_variant, fld_incomplete_type_of,
fld_process_array_type): Call fld->pset.add and don't call
add_tree_to_fld_list if it returns true.
(free_lang_data_in_type): Similarly with self-recursive call. Purge
non-marked types from TYPE_NEXT_VARIANT list.
(find_decls_types_r): Call fld_worklist_push for TYPE_CANONICAL (t).
* g++.dg/other/pr89692.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/other/pr89692.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
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Subject: [Bug lto/89692] [9 Regression] ICE in streamer_write_chain, at tree-streamer-out.c:506
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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From: "mte.zych at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/87769] GCC build from source uses headers and libraries from directories host machine.
Date: Fri, 22 Mar 2019 01:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87769
--- Comment #9 from Mateusz Zych <mte.zych at gmail dot com> ---
Hi ;)
I've analysed this issue further and
tested all combinations of different vendors in host and target triplets.
Here are the results:
+-----------------------------------+
| host |
|-----------------------------------|
| ---- | glibc |unknown | pc |
+------------+-----------------------------------+
| | ---- | FAIL | PASS | PASS | FAIL |
| t |--------|--------|--------|--------|--------|
| a | glibc | PASS | FAIL | PASS | PASS |
| r |--------|--------|--------|--------|--------|
| g |unknown | PASS | PASS | FAIL | PASS |
| e |--------|--------|--------|--------|--------|
| t | pc | FAIL | PASS | PASS | FAIL |
+------------+-----------------------------------+
Looks like building isolated compiler (target == host) doesn't work at all
and for some reason cross-compiling by combining no vendor with pc vendor fails
as well.
Note that, all failing configurations are encountering the same issue
with compilation of libstdc++-v3 during first GCC build:
checking whether the
/home/mzych/Downloads/build-many-glibcs/gcc-first-build/./gcc/xgcc
-B/home/mzych/Downloads/build-many-glibcs/gcc-first-build/./gcc/
-B/home/mzych/Downloads/build-many-glibcs/gcc/x86_64-pc-linux-gnu/bin/
-B/home/mzych/Downloads/build-many-glibcs/gcc/x86_64-pc-linux-gnu/lib/
-isystem
/home/mzych/Downloads/build-many-glibcs/gcc/x86_64-pc-linux-gnu/include
-isystem
/home/mzych/Downloads/build-many-glibcs/gcc/x86_64-pc-linux-gnu/sys-include
linker
(/home/mzych/Downloads/build-many-glibcs/gcc-first-build/./gcc/collect-ld -m
elf_x86_64)
supports shared libraries... yes
checking dynamic linker characteristics...
configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
Makefile:18985: recipe for target 'configure-stage1-target-libstdc++-v3'
failed
Initially I was thinking that there might be something wrong with the script,
which I've used to build GCC (CreateToolchain.sh),
but it seems unlikely, since other configurations work without any issues.
To me this looks very surprising that changing vendor in a triplet causes GCC
to fail to compile.
Can somebody help with figuring out what's going on here?
I think that the script CreateToolchain.sh could benefit the whole GCC
community,
because developers could use it to compile GCC by simply choosing desired
configuration.
Thank you, Mateusz
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Subject: [Bug driver/87769] GCC build from source uses headers and libraries from directories host machine.
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--- Comment #10 from Mateusz Zych <mte.zych at gmail dot com> ---
Created attachment 46005
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46005&action=edit
Build log of first GCC, ending on compilation failure of libstdc++-v3.
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Subject: [Bug driver/87769] GCC build from source uses headers and libraries from directories host machine.
Date: Fri, 22 Mar 2019 01:53:00 -0000
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--- Comment #11 from Mateusz Zych <mte.zych at gmail dot com> ---
Oh, I forgot to mention that I've also tested this configuration:
HOST=x86_64-abc-linux-gnu
TARGET=x86_64-xyz-linux-gnu
and it worked without any issues.
I don't understand why would these configurations fail:
HOST = x86_64-linux-gnu
TARGET = x86_64-pc-linux-gnu
HOST = x86_64-pc-linux-gnu
TARGET = x86_64-pc-linux-gnu
yet such a fabricated configuration works.
This is really confusing. @.@
Best regards, Mateusz
>From gcc-bugs-return-638141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 02:22:07 2019
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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89784] Missing AVX512 intrinsics
Date: Fri, 22 Mar 2019 02:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89784
--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Jakub Jelinek from comment #4)
> Created attachment 46004 [details]
> gcc9-pr89784.patch
>
> Untested patch, so far without testsuite coverage.
I'll do the test.
>From gcc-bugs-return-638142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 02:33:11 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
Date: Fri, 22 Mar 2019 02:33:00 -0000
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--- Comment #13 from Arseny Solokha <asolokha at gmx dot com> ---
The patch in comment 8 fixes testcases from both comment 9 and comment 12 for
me.
>From gcc-bugs-return-638143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 02:47:11 2019
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89792] New: gcc generates wrong debug information at -O3
Date: Fri, 22 Mar 2019 02:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89792
Bug ID: 89792
Summary: gcc generates wrong debug information at -O3
Product: gcc
Version: unknown
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It affects gcc-8 and gcc-trunk. gcc-7 works fine.
The testcase looks similar to Bug 89463. But they affect different gcc versions
and bisect points to different revisions. It would be helpful to have them
fixed.
For this bug, bisect points to r255569.
$ cat abc.c
volatile int a, b;
static int c;
int main() {
int i;
b = 0;
i = 0;
for (; i < 3; i++)
a = c;
i = 0;
for (; i < 5; i++)
;
optimize_me_not();
}
$ cat outer.c
void optimize_me_not() {}
$ cat cmds
b 12
r
p i
kill
q
#Correct output#
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x400496: file abc.c, line 12.
Breakpoint 1, main () at abc.c:12
12 optimize_me_not();
$1 = 5
#Wrong output#
$ gcc-trunk -g -O3 abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x4003ae: file abc.c, line 12.
Breakpoint 1, main () at abc.c:12
12 optimize_me_not();
$1 = 0
>From gcc-bugs-return-638144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 02:50:17 2019
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Subject: [Bug debug/89792] gcc generates wrong debug information at -O3
Date: Fri, 22 Mar 2019 02:50:00 -0000
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--- Comment #1 from Qirun Zhang <qrzhang at gatech dot edu> ---
This might be a latent issue.
Attaching my gcc version:
$ gcc-trunk -v
Thread model: posix
gcc version 9.0.1 20190321 (experimental) [trunk revision 269832] (GCC)
$ gcc-7 -v
Thread model: posix
gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~16.04~ppa1)
$ gcc-8 -v
gcc version 8.1.0 (Ubuntu 8.1.0-5ubuntu1~16.04)
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Fri, 22 Mar 2019 02:59:00 -0000
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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> ---
Patch committed in r269867.
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Subject: [Bug tree-optimization/88443] [meta-bug] bogus/missing -Wstringop-overflow warnings
Date: Fri, 22 Mar 2019 02:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88443
Bug 88443 depends on bug 89350, which changed state.
Bug 89350 Summary: [9 Regression] Wrong -Wstringop-overflow= warning since r261518
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89350
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug tree-optimization/89350] [9 Regression] Wrong -Wstringop-overflow= warning since r261518
Date: Fri, 22 Mar 2019 02:59:00 -0000
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--- Comment #11 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Mar 22 02:58:27 2019
New Revision: 269867
URL: https://gcc.gnu.org/viewcvs?rev=269867&root=gcc&view=rev
Log:
PR tree-optimization/89350 - Wrong -Wstringop-overflow= warning since r261518
gcc/ChangeLog:
PR tree-optimization/89350
* builtins.c (compute_objsize): Also ignore offsets whose upper
bound is negative.
* gimple-ssa-warn-restrict.c (builtin_memref): Add new member.
(builtin_memref::builtin_memref): Initialize new member.
Allow EXPR to be null.
(builtin_memref::extend_offset_range): Replace local with a member.
Avoid assuming pointer offsets are unsigned.
(builtin_memref::set_base_and_offset): Determine base object
before computing offset range.
(builtin_access::builtin_access): Handle memset.
(builtin_access::generic_overlap): Replace local with a member.
(builtin_access::strcat_overlap): Same.
(builtin_access::overlap): Same.
(maybe_diag_overlap): Same.
(maybe_diag_access_bounds): Same.
(wrestrict_dom_walker::check_call): Handle memset.
(check_bounds_or_overlap): Same.
gcc/testsuite/ChangeLog:
PR tree-optimization/89350
* gcc.dg/Wstringop-overflow.c: Xfail overly ambitious tests.
* gcc.dg/Wstringop-overflow-11.c: New test.
* gcc.dg/Wstringop-overflow-12.c: New test.
* gcc.dg/pr89350.c: New test.
* gcc.dg/pr40340-1.c: Adjust expected warning.
* gcc.dg/pr40340-2.c: Same.
* gcc.dg/pr40340-4.c: Same.
* gcc.dg/pr40340-5.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-11.c
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-12.c
trunk/gcc/testsuite/gcc.dg/pr89350.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/gimple-ssa-warn-restrict.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/Warray-bounds-40.c
trunk/gcc/testsuite/gcc.dg/Wstringop-overflow.c
trunk/gcc/testsuite/gcc.dg/pr40340-1.c
trunk/gcc/testsuite/gcc.dg/pr40340-2.c
trunk/gcc/testsuite/gcc.dg/pr40340-4.c
trunk/gcc/testsuite/gcc.dg/pr40340-5.c
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From: "duyang.seu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89793] New: Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
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Bug ID: 89793
Summary: Implicit conversion to std::string is ambiguous on GCC
8.2 but not GCC 7.3
Product: gcc
Version: 8.2.1
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Created attachment 46006
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46006&action=edit
the preprocessed file
GCC Version:
gcc version 8.2.1 20180905 (Red Hat 8.2.1-3) (GCC)
System Type:
CentOS Linux release 7.5.1804 (Core)
GCC Configured options:
COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-8/root/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,fortran,lto --prefix=/opt/rh/devtoolset-8/root/usr
--mandir=/opt/rh/devtoolset-8/root/usr/share/man
--infodir=/opt/rh/devtoolset-8/root/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-gcc-major-version-only --with-linker-hash-style=gnu
--with-default-libstdcxx-abi=gcc4-compatible --enable-plugin
--enable-initfini-array
--with-isl=/builddir/build/BUILD/gcc-8.2.1-20180905/obj-x86_64-redhat-linux/isl-install
--disable-libmpx --enable-gnu-indirect-function --with-tune=generic
--with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
Compilation errors:
message.cpp: In instantiation of ‘Message::Message(String&&) [with String =
StringType]’:
/opt/rh/devtoolset-8/root/usr/include/c++/8/ext/new_allocator.h:136:4:
required from ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...)
[with _Up = Message; _Args =
{StringType}; _Tp = Message]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/alloc_traits.h:475:4:
required from ‘static void std::allocator_traits<std::allocator<_CharT>
>::construct(std::allocator_traits<s
td::allocator<_CharT> >::allocator_type&, _Up*, _Args&& ...) [with _Up =
Message; _Args = {StringType}; _Tp = Message;
std::allocator_traits<std::allocator<_CharT> >::allocator_type
= std::allocator<Message>]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr_base.h:543:39:
required from ‘std::_Sp_counted_ptr_inplace<_Tp, _Alloc,
_Lp>::_Sp_counted_ptr_inplace(_Alloc, _Args&& .
..) [with _Args = {StringType}; _Tp = Message; _Alloc =
std::allocator<Message>; __gnu_cxx::_Lock_policy _Lp =
(__gnu_cxx::_Lock_policy)2]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr_base.h:656:4:
required from
‘std::__shared_count<_Lp>::__shared_count(std::_Sp_make_shared_tag, _Tp*, const
_Alloc&, _A
rgs&& ...) [with _Tp = Message; _Alloc = std::allocator<Message>; _Args =
{StringType}; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr_base.h:1322:35:
required from ‘std::__shared_ptr<_Tp,
_Lp>::__shared_ptr(std::_Sp_make_shared_tag, const _Alloc&, _Args
&& ...) [with _Alloc = std::allocator<Message>; _Args = {StringType}; _Tp =
Message; __gnu_cxx::_Lock_policy _Lp = (__gnu_cxx::_Lock_policy)2]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr.h:360:64:
required from ‘std::shared_ptr<_Tp>::shared_ptr(std::_Sp_make_shared_tag, const
_Alloc&, _Args&& ...) [with _
Alloc = std::allocator<Message>; _Args = {StringType}; _Tp = Message]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr.h:706:14:
required from ‘std::shared_ptr<_Tp> std::allocate_shared(const _Alloc&, _Args&&
...) [with _Tp = Message; _Al
loc = std::allocator<Message>; _Args = {StringType}]’
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/shared_ptr.h:722:39:
required from ‘std::shared_ptr<_Tp> std::make_shared(_Args&& ...) [with _Tp =
Message; _Args = {StringType}]’
message.cpp:77:44: required from ‘void Queue<M>::EnqueueImpl(T1&&, const
Queue<M>::Type<T2>&) [with T1 = StringType; T2 = StringType; M = Message]’
message.cpp:63:5: required from ‘void Queue<M>::Enqueue(T&&) [with T =
StringType; M = Message]’
message.cpp:86:29: required from here
message.cpp:47:60: error: call of overloaded ‘basic_string(<brace-enclosed
initializer list>)’ is ambiguous
Message(String&& data) : data_{std::forward<String>(data)} {}
^
In file included from /opt/rh/devtoolset-8/root/usr/include/c++/8/string:52,
from /usr/local/include/boost/utility/string_view_fwd.hpp:21,
from /usr/local/include/boost/utility/string_view.hpp:22,
from /usr/local/include/boost/beast/core/string.hpp:19,
from /usr/local/include/boost/beast/core/file_base.hpp:14,
from /usr/local/include/boost/beast/core/type_traits.hpp:14,
from
/usr/local/include/boost/beast/http/basic_dynamic_body.hpp:14,
from /usr/local/include/boost/beast/http.hpp:15,
from message.cpp:1:
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/basic_string.h:3562:7: note:
candidate: ‘std::basic_string<_CharT, _Traits,
_Alloc>::basic_string(std::basic_string<_CharT, _Traits,
_Alloc>&&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc =
std::allocator<char>]’
basic_string(basic_string&& __str)
^~~~~~~~~~~~
In file included from /opt/rh/devtoolset-8/root/usr/include/c++/8/string:53,
from /usr/local/include/boost/utility/string_view_fwd.hpp:21,
from /usr/local/include/boost/utility/string_view.hpp:22,
from /usr/local/include/boost/beast/core/string.hpp:19,
from /usr/local/include/boost/beast/core/file_base.hpp:14,
from /usr/local/include/boost/beast/core/type_traits.hpp:14,
from
/usr/local/include/boost/beast/http/basic_dynamic_body.hpp:14,
from /usr/local/include/boost/beast/http.hpp:15,
from message.cpp:1:
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/basic_string.tcc:609:5: note:
candidate: ‘std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const
std::basic_string<_CharT, _
Traits, _Alloc>&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc
= std::allocator<char>]’
basic_string<_CharT, _Traits, _Alloc>::
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /opt/rh/devtoolset-8/root/usr/include/c++/8/string:52,
from /usr/local/include/boost/utility/string_view_fwd.hpp:21,
from /usr/local/include/boost/utility/string_view.hpp:22,
from /usr/local/include/boost/beast/core/string.hpp:19,
from /usr/local/include/boost/beast/core/file_base.hpp:14,
from /usr/local/include/boost/beast/core/type_traits.hpp:14,
from
/usr/local/include/boost/beast/http/basic_dynamic_body.hpp:14,
from /usr/local/include/boost/beast/http.hpp:15,
from message.cpp:1:
/opt/rh/devtoolset-8/root/usr/include/c++/8/bits/basic_string.h:3491:7: note:
candidate: ‘std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const
_Alloc&) [with _CharT = char
; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’
basic_string(const _Alloc& __a);
^~~~~~~~~~~~
Command to reproduce the compilation errors:
g++ -O2 -Wall -std=c++17 message.cpp -o test_message
Comments:
No such error on GCC7.3.1. The version is,
gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC).
>From gcc-bugs-return-638149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 03:17:21 2019
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Subject: [Bug bootstrap/19852] Segmentation fault during: build/genmodes -h > tmp-modes.h
Date: Fri, 22 Mar 2019 03:17:00 -0000
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----------------------------------------------------------------------------
CC| |yjf.victor at foxmail dot com
--- Comment #4 from yjf.victor at foxmail dot com ---
I have the same problem.
```
make[3]: Entering directory '/dev/fs/E/22/gcc/bindir/gcc'
build/genmodes -h > tmp-modes.h
Memory fault (core dumped)
make[3]: *** [Makefile:2206: s-modes-h] Error 139
make[3]: Leaving directory '/dev/fs/E/22/gcc/bindir/gcc'
make[2]: *** [Makefile:4369: all-stage1-gcc] Error 2
make[2]: Leaving directory '/dev/fs/E/22/gcc/bindir'
make[1]: *** [Makefile:19210: stage1-bubble] Error 2
make[1]: Leaving directory '/dev/fs/E/22/gcc/bindir'
make: *** [Makefile:902: all] Error 2
[ -f stage_final ] || echo stage3 > stage_final
make[1]: Entering directory '/dev/fs/E/22/gcc/bindir'
make[2]: Entering directory '/dev/fs/E/22/gcc/bindir'
make[3]: Entering directory '/dev/fs/E/22/gcc/bindir'
^Cmake[3]: *** [Makefile:19168: stage1-end] Interrupt
make[2]: *** [Makefile:19125: stage1-start] Error 130
make[1]: *** [Makefile:19210: stage1-bubble] Error 130
make: *** [Makefile:902: all] Error 130
```
>From gcc-bugs-return-638150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 03:32:26 2019
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Subject: [Bug bootstrap/19852] Segmentation fault during: build/genmodes -h > tmp-modes.h
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--- Comment #5 from yjf.victor at foxmail dot com ---
I ran the command directly, and here it show:
% build/genmodes -h > tmp-modes.h
Segmentation fault (core dumped)
>From gcc-bugs-return-638151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 03:49:28 2019
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Subject: [Bug bootstrap/19852] Segmentation fault during: build/genmodes -h > tmp-modes.h
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--- Comment #6 from yjf.victor at foxmail dot com ---
According to my debugging on gdb, it failed to allocate the memory via the
`alloca()` function, and therefore resulted in Segmentation fault.
```
% gdb build/genmodes
GNU gdb 2002-11-11-cvs
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i586-pc-interix3"...
.gdbinit:13: Error in sourced command file:
/dev/fs/E/22/gcc/gcc-5.5.0/gcc/gdbinit.in:212: Error in sourced command file:
Command not implemented yet.
(gdb) b genmodes.c:851
Breakpoint 1 at 0x403899: file /dev/fs/E/22/gcc/gcc-5.5.0/gcc/genmodes.c, line
8
51.
(gdb) r -h
Starting program: /dev/fs/E/22/gcc/bindir/gcc/build/genmodes -h
Breakpoint 1, _Z15calc_wider_modev ()
at /dev/fs/E/22/gcc/gcc-5.5.0/gcc/genmodes.c:851
851 sortbuf = XALLOCAVEC (struct mode_data *, max_n_modes + 1);
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x0083ff7a in ?? ()
(gdb)
```
>From gcc-bugs-return-638152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 03:54:22 2019
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Subject: [Bug bootstrap/19852] Segmentation fault during: build/genmodes -h > tmp-modes.h
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to yjf.victor from comment #6)
> According to my debugging on gdb, it failed to allocate the memory via the
> `alloca()` function, and therefore resulted in Segmentation fault.
If the problem is alloca, then you should be able to increase the stack size
limit and have it work. Also i586-pc-interix3 is no longer supported IIRC.
>From gcc-bugs-return-638153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 04:01:33 2019
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Subject: [Bug bootstrap/19852] Segmentation fault during: build/genmodes -h > tmp-modes.h
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--- Comment #8 from yjf.victor at foxmail dot com ---
It seems that the stack size is unlimited.
```
% limit
cputime unlimited
filesize unlimited
datasize unlimited
stacksize unlimited
coredumpsize unlimited
vmemoryuse unlimited
descriptors 1024
% limit -h
cputime unlimited
filesize unlimited
datasize unlimited
stacksize unlimited
coredumpsize unlimited
vmemoryuse unlimited
descriptors 1024
```
However, it fails at `alloca()` when it only try to allocate `31 *
sizeof(struct mode_data *)` bytes of memory.
```
Breakpoint 1, _Z15calc_wider_modev ()
at /dev/fs/E/22/gcc/gcc-5.5.0/gcc/genmodes.c:851
851 sortbuf = XALLOCAVEC (struct mode_data *, max_n_modes + 1);
(gdb) p max_n_modes
$1 = 31
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x0083ff7a in ?? ()
(gdb)
```
>From gcc-bugs-return-638154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 05:33:05 2019
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Subject: [Bug target/89784] Missing AVX512 intrinsics
Date: Fri, 22 Mar 2019 05:33:00 -0000
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--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
Created attachment 46007
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46007&action=edit
add cover tests for intrinsics
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Subject: [Bug target/89784] Missing AVX512 intrinsics
Date: Fri, 22 Mar 2019 07:41:00 -0000
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Hongtao.liu <crazylht at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #46007|0 |1
is obsolete| |
--- Comment #7 from Hongtao.liu <crazylht at gmail dot com> ---
Created attachment 46008
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46008&action=edit
add cover tests for intrinsics v2.
Add runtime tests for them.
Cover tests ok. bootstrap ok.
didn't run regression tests for x86_64/i386
>From gcc-bugs-return-638156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 07:43:12 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/89790] [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
Date: Fri, 22 Mar 2019 07:43:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-22
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Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Will get to this next week.
>From gcc-bugs-return-638157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 09:21:24 2019
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From: "harald at gigawatt dot nl" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Fri, 22 Mar 2019 09:21:00 -0000
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Harald van Dijk <harald at gigawatt dot nl> changed:
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----------------------------------------------------------------------------
CC| |harald at gigawatt dot nl
--- Comment #1 from Harald van Dijk <harald at gigawatt dot nl> ---
Your StringType provides a conversion operator to HTTPResponse, which
indirectly has std::allocator<char> as a private base class. Overload
resolution happens before access checks, so the fact that it is a private base
class does not prevent the construction of std::string from being ambiguous:
the conversion to HTTPResponse could be used followed by the construction of a
new std::string using the HTTPResponse as the allocator.
This appears to work the same way in GCC 8 as it does in GCC 7, although it is
possible that for whatever reason, the GCC 7 version ends up not including
std::allocator<char> as a base class.
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Subject: [Bug c++/60702] thread_local initialization
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
--- Comment #11 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #10)
> Created attachment 45976 [details]
> gcc9-pr60702.patch
>
> Untested fix.
For emulated TLS on x86_64-Darwin16, this progresses
thread_local12c.C
thread_local12d.C
thread_local12i.C
thread_local12j.C
thread_local12l.C
which fail without the patch and pass with it,
thread_local11.C
fails for every instance of _ZTH*
(passes for _ZTW* 2 gimple)
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89784] Missing AVX512 intrinsics
Date: Fri, 22 Mar 2019 10:09:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 22 10:08:40 2019
New Revision: 269868
URL: https://gcc.gnu.org/viewcvs?rev=269868&root=gcc&view=rev
Log:
PR target/89784
* config/i386/i386.c (enum ix86_builtins): Remove
IX86_BUILTIN_VFMSUBSD3_MASK3 and IX86_BUILTIN_VFMSUBSS3_MASK3.
* config/i386/i386-builtin.def (__builtin_ia32_vfmaddsd3_mask,
__builtin_ia32_vfmaddsd3_mask3, __builtin_ia32_vfmaddsd3_maskz,
__builtin_ia32_vfmsubsd3_mask3, __builtin_ia32_vfmaddss3_mask,
__builtin_ia32_vfmaddss3_mask3, __builtin_ia32_vfmaddss3_maskz,
__builtin_ia32_vfmsubss3_mask3): New builtins.
* config/i386/sse.md (avx512f_vmfmadd_<mode>_mask<round_name>,
avx512f_vmfmadd_<mode>_mask3<round_name>,
avx512f_vmfmadd_<mode>_maskz_1<round_name>,
*avx512f_vmfmsub_<mode>_mask<round_name>,
avx512f_vmfmsub_<mode>_mask3<round_name>,
*avx512f_vmfmasub_<mode>_maskz_1<round_name>,
*avx512f_vmfnmadd_<mode>_mask<round_name>,
*avx512f_vmfnmadd_<mode>_mask3<round_name>,
*avx512f_vmfnmadd_<mode>_maskz_1<round_name>,
*avx512f_vmfnmsub_<mode>_mask<round_name>,
*avx512f_vmfnmsub_<mode>_mask3<round_name>,
*avx512f_vmfnmasub_<mode>_maskz_1<round_name>): New define_insns.
(avx512f_vmfmadd_<mode>_maskz<round_expand_name>): New define_expand.
* config/i386/avx512fintrin.h (_mm_mask_fmadd_sd, _mm_mask_fmadd_ss,
_mm_mask3_fmadd_sd, _mm_mask3_fmadd_ss, _mm_maskz_fmadd_sd,
_mm_maskz_fmadd_ss, _mm_mask_fmsub_sd, _mm_mask_fmsub_ss,
_mm_mask3_fmsub_sd, _mm_mask3_fmsub_ss, _mm_maskz_fmsub_sd,
_mm_maskz_fmsub_ss, _mm_mask_fnmadd_sd, _mm_mask_fnmadd_ss,
_mm_mask3_fnmadd_sd, _mm_mask3_fnmadd_ss, _mm_maskz_fnmadd_sd,
_mm_maskz_fnmadd_ss, _mm_mask_fnmsub_sd, _mm_mask_fnmsub_ss,
_mm_mask3_fnmsub_sd, _mm_mask3_fnmsub_ss, _mm_maskz_fnmsub_sd,
_mm_maskz_fnmsub_ss, _mm_mask_fmadd_round_sd, _mm_mask_fmadd_round_ss,
_mm_mask3_fmadd_round_sd, _mm_mask3_fmadd_round_ss,
_mm_maskz_fmadd_round_sd, _mm_maskz_fmadd_round_ss,
_mm_mask_fmsub_round_sd, _mm_mask_fmsub_round_ss,
_mm_mask3_fmsub_round_sd, _mm_mask3_fmsub_round_ss,
_mm_maskz_fmsub_round_sd, _mm_maskz_fmsub_round_ss,
_mm_mask_fnmadd_round_sd, _mm_mask_fnmadd_round_ss,
_mm_mask3_fnmadd_round_sd, _mm_mask3_fnmadd_round_ss,
_mm_maskz_fnmadd_round_sd, _mm_maskz_fnmadd_round_ss,
_mm_mask_fnmsub_round_sd, _mm_mask_fnmsub_round_ss,
_mm_mask3_fnmsub_round_sd, _mm_mask3_fnmsub_round_ss,
_mm_maskz_fnmsub_round_sd, _mm_maskz_fnmsub_round_ss): New intrinsics.
* gcc.target/i386/sse-13.c (__builtin_ia32_vfmaddsd3_mask,
__builtin_ia32_vfmaddsd3_mask3, __builtin_ia32_vfmaddsd3_maskz,
__builtin_ia32_vfmsubsd3_mask3, __builtin_ia32_vfmaddss3_mask,
__builtin_ia32_vfmaddss3_mask3, __builtin_ia32_vfmaddss3_maskz,
__builtin_ia32_vfmsubss3_mask3): Define.
* gcc.target/i386/sse-23.c (__builtin_ia32_vfmaddsd3_mask,
__builtin_ia32_vfmaddsd3_mask3, __builtin_ia32_vfmaddsd3_maskz,
__builtin_ia32_vfmsubsd3_mask3, __builtin_ia32_vfmaddss3_mask,
__builtin_ia32_vfmaddss3_mask3, __builtin_ia32_vfmaddss3_maskz,
__builtin_ia32_vfmsubss3_mask3): Define.
* gcc.target/i386/avx-1.c (__builtin_ia32_vfmaddsd3_mask,
__builtin_ia32_vfmaddsd3_mask3, __builtin_ia32_vfmaddsd3_maskz,
__builtin_ia32_vfmsubsd3_mask3, __builtin_ia32_vfmaddss3_mask,
__builtin_ia32_vfmaddss3_mask3, __builtin_ia32_vfmaddss3_maskz,
__builtin_ia32_vfmsubss3_mask3): Define.
* gcc.target/i386/sse-14.c: Add tests for
_mm_mask{,3,z}_f{,n}m{add,sub}_round_s{s,d} builtins.
* gcc.target/i386/sse-22.c: Likewise.
2019-03-22 Hongtao Liu <hongtao.liu@intel.com>
* gcc.target/i386/avx512f-vfmaddXXXsd-1.c (avx512f_test): Add tests
for _mm_mask{,3,z}_*.
* gcc.target/i386/avx512f-vfmaddXXXss-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfmsubXXXsd-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfmsubXXXss-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfnmaddXXXsd-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfnmaddXXXss-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfnmsubXXXsd-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfnmsubXXXss-1.c (avx512f_test): Likewise.
* gcc.target/i386/avx512f-vfmaddXXXsd-2.c: New test.
* gcc.target/i386/avx512f-vfmaddXXXss-2.c: New test.
* gcc.target/i386/avx512f-vfmsubXXXsd-2.c: New test.
* gcc.target/i386/avx512f-vfmsubXXXss-2.c: New test.
* gcc.target/i386/avx512f-vfnmaddXXXsd-2.c: New test.
* gcc.target/i386/avx512f-vfnmaddXXXss-2.c: New test.
* gcc.target/i386/avx512f-vfnmsubXXXsd-2.c: New test.
* gcc.target/i386/avx512f-vfnmsubXXXss-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmaddXXXsd-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmaddXXXss-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmsubXXXsd-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmsubXXXss-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmaddXXXsd-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmaddXXXss-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmsubXXXsd-2.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmsubXXXss-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/avx512fintrin.h
trunk/gcc/config/i386/i386-builtin.def
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/sse.md
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/avx-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmaddXXXsd-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmaddXXXss-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmsubXXXsd-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfmsubXXXss-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmaddXXXsd-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmaddXXXss-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmsubXXXsd-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512f-vfnmsubXXXss-1.c
trunk/gcc/testsuite/gcc.target/i386/sse-13.c
trunk/gcc/testsuite/gcc.target/i386/sse-14.c
trunk/gcc/testsuite/gcc.target/i386/sse-22.c
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Fri, 22 Mar 2019 10:28:00 -0000
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--- Comment #2 from du yang <duyang.seu at gmail dot com> ---
Created attachment 46009
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46009&action=edit
GCC 7.3.1 source file dump
GCC version:
gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC)
System Type:
CentOS Linux release 7.5.1804 (Core)
GCC Configured options:
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,fortran,lto --prefix=/opt/rh/devtoolset-7/root/usr
--mandir=/opt/rh/devtoolset-7/root/usr/share/man
--infodir=/opt/rh/devtoolset-7/root/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-gcc-major-version-only --enable-plugin --with-linker-hash-style=gnu
--enable-initfini-array --with-default-libstdcxx-abi=gcc4-compatible
--with-isl=/builddir/build/BUILD/gcc-7.3.1-20180303/obj-x86_64-redhat-linux/isl-install
--enable-libmpx --enable-gnu-indirect-function --with-tune=generic
--with-arch_32=i686 --build=x86_64-redhat-linux
Comments:
Please see attached for a GCC 7.3.1 source file dump and help confirm your
assumptions.
>From gcc-bugs-return-638161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 10:59:29 2019
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Subject: [Bug c++/80559] Duplicate "template argument x is invalid" diagnostics
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|error-recovery, |diagnostic
|ice-on-invalid-code |
Target Milestone|7.5 |---
Summary|[7/8/9 Regression] |Duplicate "template
|Segmentation fault on |argument x is invalid"
|invalid initializer list |diagnostics
|template arguments |
>From gcc-bugs-return-638162-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:13:20 2019
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Subject: [Bug c++/89512] [7/8/9 Regression] ICE in get_expr_operands, at tree-ssa-operands.c:882
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC|jakub at gcc dot gnu.org |
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>From gcc-bugs-return-638163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:18:09 2019
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Subject: [Bug c++/89512] [7/8 Regression] ICE in get_expr_operands, at tree-ssa-operands.c:882
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|get_expr_operands, at |get_expr_operands, at
|tree-ssa-operands.c:882 |tree-ssa-operands.c:882
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes.
>From gcc-bugs-return-638164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:42:07 2019
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Subject: [Bug c++/89781] Misleading error messages when initializing a static data member in-class
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Why do you think so? Inline variables in C++17 are only variables with
explicit inline keyword or constexpr static data members. So it is correct
this is rejected.
Are you suggesting the diagnostics should say something like either 'constexpr'
needed ... or static data member needs to be 'inline' ?
>From gcc-bugs-return-638166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:55:08 2019
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Subject: [Bug target/88918] [meta-bug] x86 intrinsic issues
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Bug 88918 depends on bug 89784, which changed state.
Bug 89784 Summary: Missing AVX512 intrinsics
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89784
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-638165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:55:07 2019
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Subject: [Bug target/89784] Missing AVX512 intrinsics
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Implemented on the trunk. Thanks for the testcase coverage work.
>From gcc-bugs-return-638167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 11:58:36 2019
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Subject: [Bug tree-optimization/89789] [9 Regression] Compile time hog during RPO VN
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-22
CC| |jakub at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r263875.
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Subject: [Bug c++/89781] Misleading error messages when initializing a static data member in-class
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89781
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yeah I guess the diagnostics could be improved for C++17 and up to say that
using 'inline' would make it valid.
>From gcc-bugs-return-638169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 12:28:15 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89794] New: wrong code with -Og -fno-forward-propagate
Date: Fri, 22 Mar 2019 12:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89794
Bug ID: 89794
Summary: wrong code with -Og -fno-forward-propagate
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 46010
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46010&action=edit
reduced testcase
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -Og -fno-forward-propagate testcase.c
-static
$ ./a.out
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault
The instruction:
...
@ testcase.c:12: __builtin_memset (&i, c, 2);
movw r1, #:lower16:c @ tmp132,
movt r1, #:upper16:c @ tmp132,
ldr ip, [r1] @ c.2_7, c
uxtb r3, ip @ c.2_7, c.2_7
add r3, r3, r3, lsl #8 @ tmp140, c.2_7, c.2_7,
strh r3, [sp] @ movhi @ tmp140, MEM[(void *)&i]
overwrites return address
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269795-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269795-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190319 (experimental) (GCC)
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Subject: [Bug rtl-optimization/89795] New: wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
Date: Fri, 22 Mar 2019 12:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89795
Bug ID: 89795
Summary: wrong code with -O2 -fno-dce -fno-forward-propagate
-fno-sched-pressure
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
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Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 46011
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46011&action=edit
reduced testcase
Compiler output:
$ armv7a-hardfloat-linux-gnueabi-gcc -O2 -fno-dce -fno-forward-propagate
-fno-sched-pressure testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
Correct value is 0xf7, invalid value is 0xfffffff7 (sign extended).
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269795-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269795-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190319 (experimental) (GCC)
>From gcc-bugs-return-638171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 12:41:51 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 22 Mar 2019 12:41:00 -0000
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--- Comment #31 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Ramana Radhakrishnan from comment #30)
> (In reply to Jakub Jelinek from comment #29)
> > Ramana, any progress on this?
>
> I'm still trying to get the various spec files and the t-multilib bits
> sorted and half-term has intervened here in the UK.
Any further progress? This is a wrong-code P1, so really has to be fixed for
GCC9.
>From gcc-bugs-return-638172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 12:52:47 2019
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Subject: [Bug c++/89780] -Wpessimizing-move is too agressive with templates and recommends pessimization
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Fri, 22 Mar 2019 13:19:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I haven't analysed whether it's valid yet, but it started to fail with r258755
PR c++/81311 - wrong C++17 overload resolution.
* call.c (build_user_type_conversion_1): Remove C++17 code.
(conv_binds_ref_to_prvalue): New.
(build_over_call): Handle C++17 copy elision.
(build_special_member_call): Only do C++17 copy elision here if the
argument is already the right type.
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89793
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Harald van Dijk from comment #1)
> Your StringType provides a conversion operator to HTTPResponse, which
> indirectly has std::allocator<char> as a private base class. Overload
> resolution happens before access checks, so the fact that it is a private
> base class does not prevent the construction of std::string from being
> ambiguous: the conversion to HTTPResponse could be used followed by the
> construction of a new std::string using the HTTPResponse as the allocator.
Right, the code is equivalent to this:
#include <string>
struct NotString : std::allocator<char> { };
struct String {
operator std::string() const;
operator NotString() const;
};
struct Message {
template<typename T>
Message(T&& t) : s{t} { }
std::string s;
};
int main()
{
String s;
Message m(s);
}
> This appears to work the same way in GCC 8 as it does in GCC 7, although it
> is possible that for whatever reason, the GCC 7 version ends up not
> including std::allocator<char> as a base class.
There was a change in overload resolution between GCC 7 and 8.
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Fri, 22 Mar 2019 13:33:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Minimal testcase:
struct allocator { };
struct string {
string(const string&);
string(const allocator&);
};
struct NotString : allocator { };
struct String {
operator string() const;
operator NotString() const;
};
struct Message {
template<typename T>
Message(T&& t) : s{t} { }
string s;
};
int main()
{
String s;
Message m(s);
}
This is rejected by GCC 8:
s.cc: In instantiation of ‘Message::Message(T&&) [with T = String&]’:
s.cc:24:14: required from here
s.cc:17:25: error: call of overloaded ‘string(<brace-enclosed initializer
list>)’ is ambiguous
Message(T&& t) : s{t} { }
^
s.cc:5:3: note: candidate: ‘string::string(const allocator&)’
string(const allocator&);
^~~~~~
s.cc:4:3: note: candidate: ‘string::string(const string&)’
string(const string&);
^~~~~~
EDG also rejects it:
"s.cc", line 17: error: more than one instance of constructor "string::string"
matches the argument list:
function "string::string(const string &)"
function "string::string(const allocator &)"
argument types are: (String)
Message(T&& t) : s{t} { }
^
detected during instantiation of "Message::Message(T &&) [with
T=String &]" at line 24
It's accepted by Clang.
>From gcc-bugs-return-638176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:37:38 2019
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
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--- Comment #6 from Harald van Dijk <harald at gigawatt dot nl> ---
(In reply to Jonathan Wakely from comment #4)
> (In reply to Harald van Dijk from comment #1)
> > This appears to work the same way in GCC 8 as it does in GCC 7, although it
> > is possible that for whatever reason, the GCC 7 version ends up not
> > including std::allocator<char> as a base class.
>
> There was a change in overload resolution between GCC 7 and 8.
Ah, sorry, I just realised I was testing a smaller version without -std=c++17
on GCC 7. Yeah, I see the difference between GCC 7 and GCC 8 as well.
>From gcc-bugs-return-638177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:42:48 2019
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
Date: Fri, 22 Mar 2019 13:42:00 -0000
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Piotr Nycz <piotrwn1 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |piotrwn1 at gmail dot com
--- Comment #5 from Piotr Nycz <piotrwn1 at gmail dot com> ---
Still not "enhanced" (gcc9).
CLANG with its std-lib correctly (IMO) does not compile it.
I understand this is UB - but implementation might suggest it is checked that
iterator is biderectional (at least ) but this check has no effect.
```
template<typename _BidirectionalIterator>
inline _BidirectionalIterator
prev(_BidirectionalIterator __x, typename
iterator_traits<_BidirectionalIterator>::difference_type __n = 1)
{
// concept requirements
__glibcxx_function_requires(_BidirectionalIteratorConcept<
_BidirectionalIterator>)
std::advance(__x, -__n);
return __x;
}
```
it is very troublesome to realize that there is something wrong here - when you
have UB="very long time consuming loop (LONG_MAX iteration probably)"
Is there anything that can be done to increase importance of this enhancement?
>From gcc-bugs-return-638178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:49:00 2019
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Jason, I'm not sure if this is a regression in gcc-8 or a bug in gcc-7 that was
fixed.
It looks like both conversion sequences (String -> string -> const string& and
String -> NotString -> const allocator&) have Conversion rank, although the
lack of a derived-to-base conversion in the first one would naively seem to
make it better.
>From gcc-bugs-return-638179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:51:29 2019
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Piotr Nycz from comment #5)
> CLANG with its std-lib correctly (IMO) does not compile it.
As explained above, GCC is already correct here.
> I understand this is UB - but implementation might suggest it is checked
> that iterator is biderectional (at least ) but this check has no effect.
It does if you compile with -D_GLIBCXX_CONCEPT_CHECKS
> Is there anything that can be done to increase importance of this
> enhancement?
Write a patch?
https://gcc.gnu.org/contribute.html
>From gcc-bugs-return-638180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:52:24 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
Date: Fri, 22 Mar 2019 13:52:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-22
Ever confirmed|0 |1
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The bug is then in potential_constant_expression_1:
case SWITCH_STMT:
if (!RECUR (SWITCH_STMT_COND (t), rval))
return false;
/* FIXME we don't check SWITCH_STMT_BODY currently, because even
unreachable labels would be checked. */
return true;
This is not conservatively correct as the testcases show.
The question is how much effort we do want to spend on that.
The simplest might be to add *jump_target = integer_zero_node; before the
return true; above, that will just assume any switch can return and not check
both the switch body (which isn't checked even now) nor anything after the
switch.
Another option, slightly more involved, is say cp_walk_tree on
SWITCH_STMT_BODY, looking for any RETURN_EXPRs or CONTINUE_STMTs (the latter
only when not nested inside of a FOR_STMT, DO_STMT, WHILE_STMT and
RANGE_FOR_STMT) and if we find a RETURN_EXPR, set jump_target to that, if we
don't, but find a CONTINUE_STMT not nested in further looping constructs, set
*jump_target to that CONTINUE_STMT, otherwise keep it unchanged. To me this
looks like the best approach for now.
Another option is try to do something for the case when SWITCH_STMT_COND is
constant, but already for that we'd need to greatly extend the simplified:
if (*jump_target)
/* If we are jumping, ignore everything. This is simpler than the
cxx_eval_constant_expression handling because we only need to be
conservatively correct, and we don't necessarily have a constant value
available, so we don't bother with switch tracking. */
return true;
so that we do walk statements that can embed other statements like
cxx_eval_constant_expression does and all of that stuff, with label_matches
etc.
And if the above is done, we could have some also some mode in which for
non-constant SWITCH_STMT_COND we could say set *jump_target to the SWITCH_STMT
itself and treat it as a walk which walks the switch body, if it finds some
CASE_LABEL_EXPR, it will change it to some other mode which will start
processing all the expressions; if we detect something that is not a potential
constant expression, we would at the level of whole stmts switch back to that
*jump_target = SWITCH_STMT mode and keep looking for another CASE_LABEL_EXPR
and that way, if for any of the switch condition values there would be a
potential constant expression, we'd succeed, otherwise fail, and even set
jump_target properly based on that. But this would be quite a lot of work.
Jason, any preferences here?
>From gcc-bugs-return-638181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 13:58:37 2019
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #6)
> (In reply to Piotr Nycz from comment #5)
> > CLANG with its std-lib correctly (IMO) does not compile it.
>
> As explained above, GCC is already correct here.
>
> > I understand this is UB - but implementation might suggest it is checked
> > that iterator is biderectional (at least ) but this check has no effect.
>
> It does if you compile with -D_GLIBCXX_CONCEPT_CHECKS
If you enable concept checks it will fail to compile:
In file included from /usr/include/c++/8/bits/concept_check.h:56,
from /usr/include/c++/8/bits/move.h:34,
from /usr/include/c++/8/bits/stl_iterator.h:65,
from /usr/include/c++/8/bits/forward_list.h:37,
from /usr/include/c++/8/forward_list:38,
from prev.cc:1:
/usr/include/c++/8/bits/boost_concept_check.h: In instantiation of ‘void
__gnu_cxx::_BidirectionalIteratorConcept<_Tp>::__constraints() [with _Tp =
std::_Fwd_list_iterator<int>]’:
/usr/include/c++/8/bits/boost_concept_check.h:62:39: required from ‘void
__gnu_cxx::__function_requires() [with _Concept =
__gnu_cxx::_BidirectionalIteratorConcept<std::_Fwd_list_iterator<int> >]’
/usr/include/c++/8/bits/stl_iterator_base_funcs.h:228:7: required from
‘_BidirectionalIterator std::prev(_BidirectionalIterator, typename
std::iterator_traits<_Iter>::difference_type) [with _BidirectionalIterator =
std::_Fwd_list_iterator<int>; typename
std::iterator_traits<_Iter>::difference_type = long int]’
prev.cc:7:35: required from here
/usr/include/c++/8/bits/boost_concept_check.h:506:7: error: no match for
‘operator--’ (operand type is ‘std::_Fwd_list_iterator<int>’)
--__i; // require predecrement operator
^~~~~
/usr/include/c++/8/bits/boost_concept_check.h:507:10: error: no
‘operator--(int)’ declared for postfix ‘--’ [-fpermissive]
__i--; // require postdecrement operator
~~~^~
/usr/include/c++/8/bits/boost_concept_check.h: In instantiation of ‘void
__gnu_cxx::_ConvertibleConcept<_From, _To>::__constraints() [with _From =
std::forward_iterator_tag; _To = std::bidirectional_iterator_tag]’:
/usr/include/c++/8/bits/boost_concept_check.h:62:39: required from ‘void
__gnu_cxx::__function_requires() [with _Concept =
__gnu_cxx::_ConvertibleConcept<std::forward_iterator_tag,
std::bidirectional_iterator_tag>]’
/usr/include/c++/8/bits/boost_concept_check.h:505:43: required from ‘void
__gnu_cxx::_BidirectionalIteratorConcept<_Tp>::__constraints() [with _Tp =
std::_Fwd_list_iterator<int>]’
/usr/include/c++/8/bits/boost_concept_check.h:62:39: required from ‘void
__gnu_cxx::__function_requires() [with _Concept =
__gnu_cxx::_BidirectionalIteratorConcept<std::_Fwd_list_iterator<int> >]’
/usr/include/c++/8/bits/stl_iterator_base_funcs.h:228:7: required from
‘_BidirectionalIterator std::prev(_BidirectionalIterator, typename
std::iterator_traits<_Iter>::difference_type) [with _BidirectionalIterator =
std::_Fwd_list_iterator<int>; typename
std::iterator_traits<_Iter>::difference_type = long int]’
prev.cc:7:35: required from here
/usr/include/c++/8/bits/boost_concept_check.h:223:27: error: conversion from
‘std::forward_iterator_tag’ to non-scalar type
‘std::bidirectional_iterator_tag’ requested
_To __y _IsUnused = __x;
^~~
But I don't recommend using those concepts checks for C++11 or later, because
some of the checks are outdated and only enforce the C++98 requirements, so
they're wrong for the current standard.
If you compile with -D_GLIBCXX_ASSERTIONS (or -D_GLIBCXX_DEBUG which also
enables the former) then it will fail at runtime when trying to advance a
non-bidirectional iterator by a negative number:
/usr/include/c++/8/bits/stl_iterator_base_funcs.h:151: constexpr void
std::__advance(_InputIterator&, _Distance, std::input_iterator_tag) [with
_InputIterator = std::_Fwd_list_iterator<int>; _Distance = long int]: Assertion
'__n >= 0' failed.
Aborted (core dumped)
So we actually already provide two ways to prevent this UB.
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Subject: [Bug ada/89583] GNAT.Sockets.Bind_Socket fails with IPv4 address
Date: Fri, 22 Mar 2019 13:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89583
--- Comment #1 from pmderodat at gcc dot gnu.org ---
Author: pmderodat
Date: Fri Mar 22 13:59:02 2019
New Revision: 269873
URL: https://gcc.gnu.org/viewcvs?rev=269873&root=gcc&view=rev
Log:
[Ada] GNAT.Sockets: fix recent regressions
The support for IPv6 that was added since last release triggered
regressions on various platforms. The size of structures passed to low
level routines was not correct anymore: it should depend on the address
family, now.
2019-03-22 Dmitriy Anisimkov <anisimko@adacore.com>
gcc/ada/
PR ada/89583
* libgnat/g-socket.adb (Bind_Socket, Connect_Socket,
Send_Socket): Fix the computation of structure lengths passed to
low level routines.
(Is_IPv6_Address): Fix the number of expected colons.
2019-03-22 Simon Wright <simon@pushface.org>
gcc/testsuite/
PR ada/89583
* gnat.dg/socket2.adb: New.
Added:
trunk/gcc/testsuite/gnat.dg/socket2.adb
Modified:
trunk/gcc/ada/ChangeLog
trunk/gcc/ada/libgnat/g-socket.adb
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/87481] [7/8/9 Regression] Endless loop with optimisation in C++17
Date: Fri, 22 Mar 2019 14:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87481
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 22 14:40:59 2019
New Revision: 269874
URL: https://gcc.gnu.org/viewcvs?rev=269874&root=gcc&view=rev
Log:
PR c++/87481
* doc/invoke.texi (-fconstexpr-ops-limit=): Document.
* c.opt (-fconstexpr-ops-limit=): New option.
* constexpr.c (struct constexpr_ctx): Add constexpr_ops_count member.
(cxx_eval_constant_expression): When not skipping, not constant class
or location wrapper, increment *ctx->constexpr_ops_count and if it is
above constexpr_loop_nest_limit, diagnose failure.
(cxx_eval_outermost_constant_expr): Add constexpr_ops_count and
initialize ctx.constexpr_ops_count to its address.
(is_sub_constant_expr): Likewise.
* g++.dg/cpp1y/constexpr-87481.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-87481.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c.opt
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/doc/invoke.texi
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/60702] thread_local initialization
Date: Fri, 22 Mar 2019 14:43:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar 22 14:42:57 2019
New Revision: 269875
URL: https://gcc.gnu.org/viewcvs?rev=269875&root=gcc&view=rev
Log:
PR c++/60702
* cp-tree.h (get_tls_wrapper_fn): Remove declaration.
(maybe_get_tls_wrapper_call): Declare.
* decl2.c (get_tls_wrapper_fn): Make static.
(maybe_get_tls_wrapper_call): New function.
* typeck.c (build_class_member_access_expr): Handle accesses to TLS
variables.
* semantics.c (finish_qualified_id_expr): Likewise.
(finish_id_expression_1): Use maybe_get_tls_wrapper_call.
* pt.c (tsubst_copy_and_build): Likewise.
* g++.dg/tls/thread_local11.C: New test.
* g++.dg/tls/thread_local11.h: New test.
* g++.dg/tls/thread_local12a.C: New test.
* g++.dg/tls/thread_local12b.C: New test.
* g++.dg/tls/thread_local12c.C: New test.
* g++.dg/tls/thread_local12d.C: New test.
* g++.dg/tls/thread_local12e.C: New test.
* g++.dg/tls/thread_local12f.C: New test.
* g++.dg/tls/thread_local12g.C: New test.
* g++.dg/tls/thread_local12h.C: New test.
* g++.dg/tls/thread_local12i.C: New test.
* g++.dg/tls/thread_local12j.C: New test.
* g++.dg/tls/thread_local12k.C: New test.
* g++.dg/tls/thread_local12l.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/tls/thread_local11.C
trunk/gcc/testsuite/g++.dg/tls/thread_local11.h
trunk/gcc/testsuite/g++.dg/tls/thread_local12a.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12b.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12c.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12d.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12e.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12f.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12g.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12h.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12i.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12j.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12k.C
trunk/gcc/testsuite/g++.dg/tls/thread_local12l.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl2.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/semantics.c
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
Date: Fri, 22 Mar 2019 14:44:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
Target Milestone|--- |10.0
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I don't think it's conforming to reject this at compile-time, because
std::prev(it, -1) is equivalent to std::advance(it, 1) which is valid for
forward iterators. So libc++ has a bug, it is not allowed to reject forward
iterators unconditionally (only when it can prove the argument to prev is
greater than zero).
The best we can do is check for negative values at runtime and abort, which we
already do.
One day I hope to be able to enhance those assertions to warn at compile-time
if the compiler can tell the assertion will fail, but that is not currently
possible.
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Subject: [Bug c++/89785] Incorrect "not a constant expression" error with switch statement that returns
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(I'd be interested in implementing one of the above, but would also like to
hear from Jason first.)
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
P.S. in C++2a std::ranges::prev does make it ill-formed to pass arguments that
don't satisfy the BidirectionalIterator concept. But std::prev doesn't.
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Subject: [Bug c++/60702] thread_local initialization
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #11)
> (In reply to Jakub Jelinek from comment #10)
> > Created attachment 45976 [details]
> > gcc9-pr60702.patch
> >
> > Untested fix.
>
> For emulated TLS on x86_64-Darwin16, this progresses
> thread_local12c.C
> thread_local12d.C
> thread_local12i.C
> thread_local12j.C
> thread_local12l.C
>
> which fail without the patch and pass with it,
>
> thread_local11.C
> fails for every instance of _ZTH*
> (passes for _ZTW* 2 gimple)
Doesn't thread_local-wrap3.C FAIL then as well?
If yes, then perhaps:
--- gcc/testsuite/g++.dg/tls/thread_local11.C.jj 2019-03-22
15:42:02.506993141 +0100
+++ gcc/testsuite/g++.dg/tls/thread_local11.C 2019-03-22 15:56:11.077364204
+0100
@@ -15,18 +15,18 @@
// { dg-final { scan-tree-dump-times "_ZTWN1T2u6E" 2 "gimple" } }
// { dg-final { scan-tree-dump-times "_ZTWN1T2u7E" 2 "gimple" } }
// { dg-final { scan-tree-dump-times "_ZTWN1T2u8E" 2 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTH2s1" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTH2s2" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTH2s3" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTH2s4" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u1E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u2E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u3E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u4E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u5E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u6E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u7E" 1 "gimple" } }
-// { dg-final { scan-tree-dump-times "_ZTHN1T2u8E" 1 "gimple" } }
+// { dg-final { scan-tree-dump-times "_ZTH2s1" 1 "gimple" { target tls_native
} } }
+// { dg-final { scan-tree-dump-times "_ZTH2s2" 1 "gimple" { target tls_native
} } }
+// { dg-final { scan-tree-dump-times "_ZTH2s3" 1 "gimple" { target tls_native
} } }
+// { dg-final { scan-tree-dump-times "_ZTH2s4" 1 "gimple" { target tls_native
} } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u1E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u2E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u3E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u4E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u5E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u6E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u7E" 1 "gimple" { target
tls_native } } }
+// { dg-final { scan-tree-dump-times "_ZTHN1T2u8E" 1 "gimple" { target
tls_native } } }
#include "thread_local11.h"
If that test doesn't fail, then perhaps instead:
--- gcc/testsuite/g++.dg/tls/thread_local11.C.jj 2019-03-22
15:42:02.506993141 +0100
+++ gcc/testsuite/g++.dg/tls/thread_local11.C 2019-03-22 16:00:08.863486555
+0100
@@ -1,6 +1,7 @@
// PR c++/60702
// { dg-do compile { target c++11 } }
// { dg-add-options tls }
+// { dg-require-alias "" }
// { dg-require-effective-target tls_runtime }
// { dg-additional-options "-fdump-tree-gimple" }
// { dg-final { scan-tree-dump-times "_ZTW2s1" 2 "gimple" } }
(sadly there is no effective target alias).
>From gcc-bugs-return-638189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:15:56 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Another place where I'd like to selectively enable warnings is for this code
(from PR 78830):
#include <forward_list>
#include <algorithm>
int main()
{
std::forward_list<int> il = {1, 2, 3, 4, 5, 6, 7};
auto iter = std::prev(il.end());
}
With -Wall -O1 -Wsystem-headers GCC detects the undefined behaviour:
In file included from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_algobase.h:66,
from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/forward_list.h:38,
from /home/jwakely/gcc/9/include/c++/9.0.1/forward_list:38,
from prev.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
warning: iteration 9223372036854775807 invokes undefined behavior
[-Waggressive-loop-optimizations]
153 | while (__n--)
| ^~~~~
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
note: within this loop
but that very useful warning is suppressed by default. This bug prevents me
from locally enabling -Wsystem-headers around the relevant functions in
<bits/stl_iterator_base_funcs.h>.
>From gcc-bugs-return-638190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:21:26 2019
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Subject: [Bug c++/43167] Warnings should not be disabled when instantiating templates defined in system headers
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2017-01-24 00:00:00 |2019-3-22
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=80472
--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Bug 80472 comment 4 is another case where GCC detects undefined behaviour
caused by user-provided values, but the warning is suppressed because it's
inside a template defined in a system header:
In file included from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_algobase.h:66,
from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/forward_list.h:38,
from /home/jwakely/gcc/9/include/c++/9.0.1/forward_list:38,
from prev.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
warning: iteration 9223372036854775807 invokes undefined behavior
[-Waggressive-loop-optimizations]
153 | while (__n--)
| ^~~~~
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
note: within this loop
>From gcc-bugs-return-638191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:22:05 2019
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Subject: [Bug libstdc++/78830] std::prev accepts ForwardIterator-s
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--- Comment #10 from Andrzej Krzemienski <akrzemi1 at gmail dot com> ---
For `std::prev()` it is UB, but by my reading of UB
(http://eel.is/c++draft/intro.defs#defns.undefined) it is legal for the
implementation to respond with "terminating a translation" "with the issuance
of a diagnostic message", given that the UB in question can be detected
statically.
>From gcc-bugs-return-638192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:31:26 2019
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Subject: [Bug c++/43167] Warnings should not be disabled when instantiating templates defined in system headers
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--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And Bug 87614 is a simpler form of Ian's original example in comment 0:
#include <vector>
int main() {
std::vector<unsigned short> a;
a.emplace_back(70000);
}
With -Wsystem-header -Wconversion:
[...]
87614.cc:5:25: required from here
/home/jwakely/gcc/9/include/c++/9.0.1/ext/new_allocator.h:147:4: warning:
conversion from 'int' to 'short unsigned int' may change value [-Wconversion]
147 | { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
| ^
This error comes from the user's code, the fact the actual conversion happens
deep inside libstdc++ rather than at the call site is only because the function
templates preserves the original type all the way down. But the error is in the
user's code, not in the libstdc++ code which is just doing what it was told to
by the user.
The better GCC gets at detecting such problems and warning about them, the
bigger a problem it becomes that using templates from the C++ standard library
suppresses all GCC's useful warnings.
>From gcc-bugs-return-638193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:33:33 2019
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Subject: [Bug c++/43167] Warnings should not be disabled when instantiating templates defined in system headers
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--- Comment #18 from Jonathan Wakely <redi at gcc dot gnu.org> ---
From Matthias Kretz on IRC:
GCC needs to make a difference between warnings that apply when reading the
system headers and warnings that only manifest on a template instantiation or
constprop
>From gcc-bugs-return-638194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 15:34:44 2019
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As I already said:
(In reply to Jonathan Wakely from comment #8)
> One day I hope to be able to enhance those assertions to warn at
> compile-time if the compiler can tell the assertion will fail, but that is
> not currently possible.
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Finally, with -Waggressive-loop-optimizations -Wsystem-headers -O1 it does
terminate translation:
/usr/include/c++/8/bits/stl_iterator_base_funcs.h: In function ‘int main()’:
/usr/include/c++/8/bits/stl_iterator_base_funcs.h:152:7: error: iteration
9223372036854775807 invokes undefined behavior
[-Werror=aggressive-loop-optimizations]
while (__n--)
^~~~~
/usr/include/c++/8/bits/stl_iterator_base_funcs.h:152:7: note: within this loop
It's not currently possible to make this work automatically, without
-Wsystem-headers.
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From: "perard at cg dot uni-saarland.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89796] New: Incorrect warning generated with OpenMP atomic capture
Date: Fri, 22 Mar 2019 15:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89796
Bug ID: 89796
Summary: Incorrect warning generated with OpenMP atomic capture
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: perard at cg dot uni-saarland.de
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Created attachment 46012
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46012&action=edit
Sample code that reproduces the issue
Hello,
I get the warning "warning: value computed is not used [-Wunused-value]" when
compiling the attached code snippet with:
g++ test.cpp -fopenmp -Wall -o test
This warning is incorrect, as the value referred to by the warning is in fact
used. Moreover, the warning does not show up when OpenMP is disabled (by
omitting -fopenmp from the command line).
>From gcc-bugs-return-638197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 16:25:17 2019
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Subject: [Bug c++/87481] [7/8 Regression] Endless loop with optimisation in C++17
Date: Fri, 22 Mar 2019 16:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] Endless |[7/8 Regression] Endless
|loop with optimisation in |loop with optimisation in
|C++17 |C++17
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-638198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 16:26:13 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 22 Mar 2019 16:26:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45552|0 |1
is obsolete| |
Attachment #45580|0 |1
is obsolete| |
--- Comment #32 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Created attachment 46013
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46013&action=edit
updated patch.
Having discussed this with Richard further , instead of adding -mfpu=none , we
would prefer a mgeneral-regs-only option which keeps the 2 separate.
I'm sorry about the time it has taken to get back but this is what I have right
now. The hunk in eh_personality.cc isn't very pleasing for me but that's
because of the warning in the ABI code which triggers on the build for a hard
float build because we do have inline functions consuming floating point.
Either I drop the warning or I keep the hunk in eh_personality.cc - any
preferences / thoughts ?
>From gcc-bugs-return-638199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 16:59:58 2019
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Subject: [Bug rtl-optimization/89676] [7/8/9 Regression] Redundant moves for long long shift on 32bit x86
Date: Fri, 22 Mar 2019 16:59:00 -0000
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--- Comment #8 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Mar 22 16:59:21 2019
New Revision: 269878
URL: https://gcc.gnu.org/viewcvs?rev=269878&root=gcc&view=rev
Log:
2019-03-22 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89676
* lra-constraints.c (curr_insn_transform): Do match reload for
early clobbers even if the match was successful.
2019-03-22 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89676
* gcc.target/i386/pr89676.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr89676.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 17:12:31 2019
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Subject: [Bug middle-end/89797] New: ICE on a vector_size (1LU << 33) int variable
Date: Fri, 22 Mar 2019 17:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89797
Bug ID: 89797
Summary: ICE on a vector_size (1LU << 33) int variable
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The following most likely invalid test case causes an ICE. See also bug 69973
for a similar ICE.
$ cat z.c && gcc -S -Wall -Wextra z.c
#define N (1LU << 33)
__attribute__ ((vector_size (N))) int v;
z.c:3:1: internal compiler error: in tree_to_shwi, at tree.c:7267
3 | __attribute__ ((vector_size (N))) int v;
| ^~~~~~~~~~~~~
0x15ba089 tree_to_shwi(tree_node const*)
/src/gcc/svn/gcc/tree.c:7267
0x1170c66 default_vector_alignment(tree_node const*)
/src/gcc/svn/gcc/targhooks.c:1254
0x1163396 layout_type(tree_node*)
/src/gcc/svn/gcc/stor-layout.c:2396
0x15c4adb make_vector_type
/src/gcc/svn/gcc/tree.c:10135
0x15cba94 build_vector_type(tree_node*, poly_int<1u, long>)
/src/gcc/svn/gcc/tree.c:11055
0x97f342 handle_vector_size_attribute
/src/gcc/svn/gcc/c-family/c-attribs.c:3545
0x7f2bc1 decl_attributes(tree_node**, tree_node*, int, tree_node*)
/src/gcc/svn/gcc/attribs.c:718
0x80da64 c_decl_attributes
/src/gcc/svn/gcc/c/c-decl.c:4817
0x80e006 start_decl(c_declarator*, c_declspecs*, bool, tree_node*)
/src/gcc/svn/gcc/c/c-decl.c:4956
0x8862ac c_parser_declaration_or_fndef
/src/gcc/svn/gcc/c/c-parser.c:2154
0x884f1a c_parser_external_declaration
/src/gcc/svn/gcc/c/c-parser.c:1653
0x884a1b c_parser_translation_unit
/src/gcc/svn/gcc/c/c-parser.c:1534
0x8beced c_parse_file()
/src/gcc/svn/gcc/c/c-parser.c:19854
0x94ea72 c_common_parse_file()
/src/gcc/svn/gcc/c-family/c-opts.c:1156
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-638201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 17:13:07 2019
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Subject: [Bug middle-end/89797] ICE on a vector_size (1LU << 33) int variable
Date: Fri, 22 Mar 2019 17:13:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.3.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The ICE goes as far back as GCC 4.
>From gcc-bugs-return-638202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 17:26:19 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89798] New: excessive vector_size silently accepted and truncated
Date: Fri, 22 Mar 2019 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89798
Bug ID: 89798
Summary: excessive vector_size silently accepted and truncated
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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In the following test case the declaration of v0 is accepted and its size
matches the size specified by the vector_size attribute. The declaration of v1
is also accepted but its size does not match that specified by the same
attribute. See also pr89797 for a similar test case that triggers an ICE.
GCC should validate the attribute argument against its internal maximum and
reject excessive arguments with a descriptive error.
$ cat z.c && gcc -S -Wall -Wextra z.c
#define N0 (1LU << 30)
__attribute__ ((vector_size (N0))) char v0;
_Static_assert (N0 == sizeof v0); // passes
#define N1 (1LU << 34)
__attribute__ ((vector_size (N1))) char v1;
_Static_assert (N1 == sizeof v1); // fails
z.c:10:1: error: static assertion failed
10 | _Static_assert (N1 == sizeof v1); // fails
| ^~~~~~~~~~~~~~
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Subject: [Bug c/89798] excessive vector_size silently accepted and truncated
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89798
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=89797
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
ICC 19 issues the following errors:
z.c(3): error: vector size is too large
__attribute__ ((vector_size (N0))) char v0;
^
z.c(9): error: vector size is too large
__attribute__ ((vector_size (N1))) char v1;
^
compilation aborted for <source> (code 2)
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 22 Mar 2019 18:11:00 -0000
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--- Comment #33 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Ramana Radhakrishnan from comment #32)
>
> Either I drop the warning or I keep the hunk in eh_personality.cc - any
> preferences / thoughts ?
It would feel safer, if only the functions that need it
had a target attribute like:
_Unwind_Reason_Code
#ifdef __ARM_EABI_UNWINDER__
__attribute__((target("general-regs-only")))
PERSONALITY_FUNCTION (_Unwind_State state,
struct _Unwind_Exception* ue_header,
struct _Unwind_Context* context)
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Fri, 22 Mar 2019 18:16:00 -0000
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--- Comment #17 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Mar 22 18:14:56 2019
New Revision: 269880
URL: https://gcc.gnu.org/viewcvs?rev=269880&root=gcc&view=rev
Log:
PR rtl-optimization/87761
* config/mips/mips-protos.h (mips_split_move): Add new argument.
(mips_emit_move_or_split): Pass NULL for INSN into mips_split_move.
(mips_split_move): Accept new INSN argument. Try to forward SRC
into the next instruction.
(mips_split_move_insn): Pass INSN through to mips_split_move.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mips/mips-protos.h
trunk/gcc/config/mips/mips.c
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Subject: [Bug c++/89781] Misleading error messages when initializing a static data member in-class
Date: Fri, 22 Mar 2019 18:36:00 -0000
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--- Comment #3 from Mathias Stearn <redbeard0531 at gmail dot com> ---
Yeah, my point wasn't that this code should be accepted, it was that the error
messages should be improved. Ideally there would even be fixits suggesting
adding constexpr where it would be valid, otherwise suggesting inline.
Sorry if that wasn't clear.
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Subject: [Bug middle-end/89797] ICE on a vector_size (1LU << 33) int variable
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to PR 69973 (which was fixed).
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60702] thread_local initialization
Date: Fri, 22 Mar 2019 19:39:00 -0000
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--- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #13)
> (In reply to Iain Sandoe from comment #11)
> > (In reply to Jakub Jelinek from comment #10)
> > > Created attachment 45976 [details]
> > > gcc9-pr60702.patch
> > >
> > > Untested fix.
> >
> > For emulated TLS on x86_64-Darwin16, this progresses
> > thread_local12c.C
> > thread_local12d.C
> > thread_local12i.C
> > thread_local12j.C
> > thread_local12l.C
> >
> > which fail without the patch and pass with it,
> >
> > thread_local11.C
> > fails for every instance of _ZTH*
> > (passes for _ZTW* 2 gimple)
>
> Doesn't thread_local-wrap3.C FAIL then as well?
No, because it already
// { dg-require-alias "" }
so it's unsupported.
> --- gcc/testsuite/g++.dg/tls/thread_local11.C.jj 2019-03-22
> 15:42:02.506993141 +0100
> +++ gcc/testsuite/g++.dg/tls/thread_local11.C 2019-03-22 15:56:11.077364204
> +0100
> @@ -15,18 +15,18 @@
> // { dg-final { scan-tree-dump-times "_ZTWN1T2u6E" 2 "gimple" } }
> // { dg-final { scan-tree-dump-times "_ZTWN1T2u7E" 2 "gimple" } }
> // { dg-final { scan-tree-dump-times "_ZTWN1T2u8E" 2 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTH2s1" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTH2s2" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTH2s3" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTH2s4" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u1E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u2E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u3E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u4E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u5E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u6E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u7E" 1 "gimple" } }
> -// { dg-final { scan-tree-dump-times "_ZTHN1T2u8E" 1 "gimple" } }
> +// { dg-final { scan-tree-dump-times "_ZTH2s1" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTH2s2" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTH2s3" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTH2s4" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u1E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u2E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u3E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u4E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u5E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u6E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u7E" 1 "gimple" { target
> tls_native } } }
> +// { dg-final { scan-tree-dump-times "_ZTHN1T2u8E" 1 "gimple" { target
> tls_native } } }
>
> #include "thread_local11.h"
^^ works for me, results below.
I guess we could do something more clever to detect that the __tls_init calls
are present for !tls_native. c.f. PR84497 where we don't generate the call
(not had a chance to analyse that yet).
===
Running /src/gcc-trunk/gcc/testsuite/g++.dg/tls/tls.exp ...
=== g++ Summary for unix/-m64 ===
# of expected passes 307
# of expected failures 2
# of unsupported tests 55
Running target unix/-m32
Running /src/gcc-trunk/gcc/testsuite/g++.dg/tls/tls.exp ...
=== g++ Summary for unix/-m32 ===
# of expected passes 307
# of expected failures 2
# of unsupported tests 55
=== g++ Summary ===
# of expected passes 614
# of expected failures 4
# of unsupported tests 110
/scratch/10-12-sie/gcc-trunk-unpatched/gcc/testsuite/g++/../../xg++ version
9.0.1 20190322 (experimental) [trunk revision 269875] (GCC)
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Subject: [Bug c++/43167] Warnings should not be disabled when instantiating templates defined in system headers
Date: Fri, 22 Mar 2019 20:21:00 -0000
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--- Comment #19 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
I think the solution is to have more locations. If the diagnostic code knew
where the user value came from then it will know to not suppress the
diagnostic. I wonder what happens if you used something that actually has a
location, like an expression, for the first test case using emplace().
On Fri, 22 Mar 2019, 15:33 redi at gcc dot gnu.org, <
gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43167
>
> --- Comment #18 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> From Matthias Kretz on IRC:
>
> GCC needs to make a difference between warnings that apply when reading the
> system headers and warnings that only manifest on a template instantiation
> or
> constprop
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
--- Comment #5 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
This warning will be incomprehensible to users because the warning never
mentions any code that the user can modify. What should the user do
according to the warning?
>From gcc-bugs-return-638211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 20:47:04 2019
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Subject: [Bug c++/85013] [7/8/9 Regression] <stdin>:1:41: internal compiler error: in wide_int_to_tree_1, at tree.c:1567 0x4097e2b wide_int_to_tree_1
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
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Subject: [Bug c++/84661] [7/8/9 Regression] internal compiler error: Segmentation fault (strip_array_types())
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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> ---
Mine.
>From gcc-bugs-return-638213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 21:16:31 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
Date: Fri, 22 Mar 2019 21:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Is it better to silently generate code with undefined behaviour, or issue a
flawed warning about that undefined behaviour?
If the warning doesn't show the template instantiation context that's a
separate issue.
>From gcc-bugs-return-638214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 21:21:55 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
A comment added to the code would make the caret diagnostic self-explanatory:
--- a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
+++ b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
@@ -149,7 +149,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
// concept requirements
__glibcxx_function_requires(_InputIteratorConcept<_InputIterator>)
__glibcxx_assert(__n >= 0);
- while (__n--)
+ while (__n--) // if n is negative this has undefined behaviour
++__i;
}
That would make the diagnostic look like:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:152:7:
warning: iteration 9223372036854775807 invokes undefined behavior
[-Waggressive-loop-optimizations]
152 | while (__n--) // if n is negative this has undefined behaviour
|
It's still a bug that there's no "In instantiation of ... required from ...
required from here" context shown though.
>From gcc-bugs-return-638215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 21:39:28 2019
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Subject: [Bug fortran/86277] Presence of optional arguments not recognized for zero length arrays
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--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #2)
> Actually, the problem is not related to zero length arrays, but to the
> constructor [integer::]. I think this is related to several other PRs.
Looking at the dump-tree parts related to the lines
> integer, parameter :: m(0) = 42
> call i(m)
> call i([integer::])
> call i([integer::m])
shows that only the first call variant has a sane version of the
actual argument, while the other two have two(!) strange array
descriptors with a NULL data pointer, e.g.:
struct array01_integer(kind=4) atmp.8;
struct array01_integer(kind=4) atmp.10;
typedef integer(kind=4) [0];
atmp.8.dtype = {.elem_len=4, .rank=1, .type=1};
atmp.8.dim[0].stride = 1;
atmp.8.dim[0].lbound = 0;
atmp.8.dim[0].ubound = -1;
atmp.8.data = 0B;
atmp.8.offset = 0;
typedef integer(kind=4) [0];
atmp.10.dtype = {.elem_len=4, .rank=1, .type=1};
atmp.10.dim[0].stride = 1;
atmp.10.dim[0].lbound = 0;
atmp.10.dim[0].ubound = -1;
atmp.10.data = 0B;
atmp.10.offset = 0;
A bookkeeping issue?
>From gcc-bugs-return-638216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 21:58:02 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
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--- Comment #8 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
There is no negative n__ in user code.
On Fri, 22 Mar 2019, 21:21 redi at gcc dot gnu.org, <
gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
>
> --- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> A comment added to the code would make the caret diagnostic
> self-explanatory:
>
> --- a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
> +++ b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
> @@ -149,7 +149,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
> // concept requirements
> __glibcxx_function_requires(_InputIteratorConcept<_InputIterator>)
> __glibcxx_assert(__n >= 0);
> - while (__n--)
> + while (__n--) // if n is negative this has undefined behaviour
> ++__i;
> }
>
> That would make the diagnostic look like:
>
> /home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:152:7:
> warning: iteration 9223372036854775807 invokes undefined behavior
> [-Waggressive-loop-optimizations]
> 152 | while (__n--) // if n is negative this has undefined
> behaviour
> |
>
>
> It's still a bug that there's no "In instantiation of ... required from ...
> required from here" context shown though.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>From gcc-bugs-return-638217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 22:09:34 2019
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Subject: [Bug c/89798] excessive vector_size silently accepted and truncated
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Subject: [Bug middle-end/89797] ICE on a vector_size (1LU << 33) int variable
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>From gcc-bugs-return-638219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 22:16:18 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
Date: Fri, 22 Mar 2019 22:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There is though. std::prev(it, n) is specified as std::advance(it, -n). Calling
prev means advancing a negative amount.
But I'm not sure what your point is. Currently there's no warning by default
even though the compiler has detected UB. Are you saying it is better to not
warn at all, and just have silent UB?
If you want the warning to be improved, please open a separate bug report. This
one is about the inability to enable warnings in system headers, not the
quality of individual warnings.
>From gcc-bugs-return-638220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 22:18:29 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
Date: Fri, 22 Mar 2019 22:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #8)
> There is no negative n__ in user code.
If you want to be pedantic, there's no __n at all in user code. Because it's a
function parameter of std::advance. But clearly if the compiler says "undefined
behaviour detected at this line" and the line has a comment saying "undefined
if n is negative" then the user can figure out that the function got called
with negative n.
Is that perfect? No. Is it better than printing nothing when UB is detected? To
me the answer is obviously yes, so it seems like you're just objecting to
making improvements.
>From gcc-bugs-return-638221-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 22:58:49 2019
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Subject: [Bug fortran/84868] [7/8/9 Regression] ICE in gfc_conv_descriptor_offset, at fortran/trans-array.c:208
Date: Fri, 22 Mar 2019 22:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84868
Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
There is a variant that is wrongly rejected:
module m
implicit none
contains
function f(n) result(z)
character, save :: c(3) = ['x', 'y', 'z']
integer, intent(in) :: n
character(len_trim(c(n))) :: z
z = c(n)
end
end
program p
use m
print *, f(2)
end
pr84868b.f90:7:23:
character(len_trim(c(n))) :: z
1
Error: Variable 'c' cannot appear in the expression at (1)
With the following patch len_trim is accepted in a specification expression:
Index: expr.c
===================================================================
--- expr.c (revision 269880)
+++ expr.c (working copy)
@@ -3402,10 +3402,13 @@
return false;
}
- if (!gfc_simplify_expr (e, 0))
- return false;
+ if (gfc_simplify_expr (e, 0))
+ return true;
- return check_restricted (e);
+ if (check_restricted (e))
+ return true;
+
+ return false;
}
But then we hit the following issue at link time:
pr84868b.f90:(.text+0x12c): undefined reference to `___MOD_c'
>From gcc-bugs-return-638222-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:02:10 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
Date: Fri, 22 Mar 2019 23:02:00 -0000
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--- Comment #11 from Manuel López-Ibáñez <lopezibanez at gmail dot com> ---
I'm not being pedantic for the sake of being pedantic. It is trivial to fix
the #pragma as I explained above. However, that won't give the user any
idea about which user code is triggering the warning. For that, we need to
have at the point of warning a token that comes from user code or we need
to propagate a user location to the tokens that made up this particular
instantation of the template, so that the diagnostic code can windup the
location stack and find the user code that triggered the warning.
On Fri, 22 Mar 2019, 22:18 redi at gcc dot gnu.org, <
gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
>
> --- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
> (In reply to Manuel López-Ibáñez from comment #8)
> > There is no negative n__ in user code.
>
> If you want to be pedantic, there's no __n at all in user code. Because
> it's a
> function parameter of std::advance. But clearly if the compiler says
> "undefined
> behaviour detected at this line" and the line has a comment saying
> "undefined
> if n is negative" then the user can figure out that the function got called
> with negative n.
>
> Is that perfect? No. Is it better than printing nothing when UB is
> detected? To
> me the answer is obviously yes, so it seems like you're just objecting to
> making improvements.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
>From gcc-bugs-return-638224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:11:46 2019
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Subject: [Bug target/89795] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely related to PR 89434.
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Subject: [Bug fortran/84868] [7/8/9 Regression] ICE in gfc_conv_descriptor_offset, at fortran/trans-array.c:208
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--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #5)
> With the following patch len_trim is accepted in a specification expression:
Just forget that.
>From gcc-bugs-return-638225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:12:28 2019
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Subject: [Bug target/89794] wrong code with -Og -fno-forward-propagate
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely related to PR 89434.
>From gcc-bugs-return-638226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:22:41 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And as I've already said, the quality of the particular
-Waggressive-loop-optimizations warning is a separate issue, and should be
dealt with in a separate PR.
PR 58876 (mentioned in comment 0 as the reason for creating this bug) shows a
proper instantiation trace when -Wsystem-headers is used:
In file included from /home/jwakely/gcc/9/include/c++/9.0.1/memory:80,
from up.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/unique_ptr.h: In instantiation of
'void std::default_delete<_Tp>::operator()(_Tp*) const [with _Tp = A]':
/home/jwakely/gcc/9/include/c++/9.0.1/bits/unique_ptr.h:289:17: required from
'std::unique_ptr<_Tp, _Dp>::~unique_ptr() [with _Tp = A; _Dp =
std::default_delete<A>]'
up.cc:12:30: required from here
/home/jwakely/gcc/9/include/c++/9.0.1/bits/unique_ptr.h:81:2: warning: deleting
object of abstract class type 'A' which has non-virtual destructor will cause
undefined behavior [-Wdelete-non-virtual-dtor]
81 | delete __ptr;
| ^~~~~~
That shows the up.cc:12 location from the user code that triggers the warning.
But I can't make libstdc++ show that warning because of this bug with the
diagnostic pragmas.
Improving the warning in comment 4 is irrelevant to this bug.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/43167] Warnings should not be disabled when instantiating templates defined in system headers
Date: Fri, 22 Mar 2019 23:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43167
--- Comment #20 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #19)
> I wonder what happens if you used something that actually has a
> location, like an expression, for the first test case using emplace().
It doesn't make any difference.
>From gcc-bugs-return-638228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:44:24 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89799] New: no warning declaring an misaligned array of overaligned structs
Date: Fri, 22 Mar 2019 23:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89799
Bug ID: 89799
Summary: no warning declaring an misaligned array of
overaligned structs
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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Attribute warn_if_not_aligned is documented like so:
This attribute specifies a threshold for the structure field, measured in
bytes. If the structure field is aligned below the threshold, a warning will be
issued.
The test case below shows that the attributed does not have the documented
effect when an object of a type of a struct with an overaligned member is
defined with a less restrictive alignment.
$ cat z.c && gcc -O2 -S -Wall -Wextra -fdump-tree-optimized=/dev/stdout z.c
#define ALIGN(N) __attribute__ ((aligned (N), warn_if_not_aligned (N)))
struct ALIGN (64) S { ALIGN (64) char a[64]; };
struct S __attribute__ ((aligned (8))) s; // unaligned, missing warning
int f (void) { return __alignof__ (s); }
typedef struct S __attribute__ ((aligned (8))) A[1]; // unaligned, missing
warning
A a; // unaligned, missing warning
int g (void) { return __alignof__ (a); }
int h (void) { return __alignof__ (a[0]); }
;; Function f (f, funcdef_no=0, decl_uid=1909, cgraph_uid=1, symbol_order=1)
f ()
{
<bb 2> [local count: 1073741824]:
return 8;
}
;; Function g (g, funcdef_no=4, decl_uid=1914, cgraph_uid=2, symbol_order=3)
g ()
{
<bb 2> [local count: 1073741824]:
return 8;
}
;; Function h (h, funcdef_no=2, decl_uid=1917, cgraph_uid=3, symbol_order=4)
h ()
{
<bb 2> [local count: 1073741824]:
return 64;
}
>From gcc-bugs-return-638229-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:51:22 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89800] New: -Waggressive-loop-optimization warning doesn't have useful location
Date: Fri, 22 Mar 2019 23:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89800
Bug ID: 89800
Summary: -Waggressive-loop-optimization warning doesn't have
useful location
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: tree-optimization
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Given:
template<typename T>
T foo(T t, int n)
{
while (n--)
++t;
return t;
}
int bar(int n) { return foo(1, n); }
int main()
{
return bar(-1);
}
GCC prints:
loop.cc: In function 'int main()':
loop.cc:4:3: warning: iteration 2147483647 invokes undefined behavior
[-Waggressive-loop-optimizations]
4 | while (n--)
| ^~~~~
loop.cc:4:3: note: within this loop
This isn't very helpful, because the loop isn't in the function 'int main()' as
shown, it's in foo, and there's no indication of how foo was called from main
(there could be several different places in main that indirectly end up calling
foo).
I would expect to see something more like:
loop.cc:4:3: warning: iteration 2147483647 invokes undefined behavior
[-Waggressive-loop-optimizations]
4 | while (n--)
| ^~~~~
loop.cc:4:3: note: within this loop
loop.cc:2:1 In instantiation of 'foo<T>(T, int) [with T = int]':
loop.cc:9:25 required from 'int bar(int)':
loop.cc:13:10: required from here
A more realistic example is:
#include <array>
#include <forward_list>
#include <iterator>
template<typename T>
typename T::value_type
back(const T& t)
{
return *std::prev(t.end());
}
int main()
{
std::array<int, 2> a = { {1, 2} };
std::forward_list<int> l = {1, 2, 3};
return back(a) - back(l);
}
With -Wall -Wsystem-headers -O1 this prints:
In file included from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_algobase.h:66,
from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/char_traits.h:39,
from /home/jwakely/gcc/9/include/c++/9.0.1/string:40,
from /home/jwakely/gcc/9/include/c++/9.0.1/stdexcept:39,
from /home/jwakely/gcc/9/include/c++/9.0.1/array:39,
from prev.cc:1:
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h: In
function 'int main()':
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
warning: iteration 9223372036854775806 invokes undefined behavior
[-Waggressive-loop-optimizations]
153 | while (__n--)
| ^~~~~
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:153:7:
note: within this loop
The only location info is the "In file included from" which only shows the
header include stack and the lines of the #include directives, not the call
stack that reached std::__advance where the UB is detected.
The headers suggest that it maybe came from the <array> header, but the back(a)
call is fine, the problem is the back(l) call. (The reason is shows the array
header is that that's the route by which the <bits/stl_iterator_base_funcs.h>
header gets included, but is not the call stack for the undefined call).
To be useful the warning needs to show the template instantiation context,
something like:
void std::__advance<_InputIterator, _Distance>(_InputIterator&, _Distance,
input_iterator_tag) [with _InputIterator =
std::forward_list<int>::const_iterator, _Distance = int]
void std::advance<_InputIterator, _Distance>(_InputIterator&, _Distance) [with
_InputIterator = std::forward_list<int>::const_iterator, _Distance = int]
void std::prev<_BidirectionalIterator>(_BidirectionalIterator&, ...) [with
_BidirectionalIterator = std::forward_list<int>::const_iterator]
T::value_type back(const T&) [with T = std::forward_list<int>]
prev.cc:16:20 required from here
return back(a) - back(l);
^^^^^^^
This allows the user to see how the undefined behaviour happened.
(As an aside, should it say "results in undefined behavior" or "has undefined
behavior" not "invokes undefined behavior"? You don't invoke UB, it's not a
function.)
>From gcc-bugs-return-638230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Mar 22 23:52:07 2019
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Subject: [Bug c++/80472] cannot use push/pop with #pragma GCC diagnostic warning "-Wsystem-headers"
Date: Fri, 22 Mar 2019 23:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80472
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #12)
> Improving the warning in comment 4 is irrelevant to this bug.
I've created Bug 89800 for improving that warning, please move that discussion
there.
>From gcc-bugs-return-638231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 01:01:04 2019
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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/89801] New: gcc generates wrong debug information at -O2
Date: Sat, 23 Mar 2019 01:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89801
Bug ID: 89801
Summary: gcc generates wrong debug information at -O2
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: qrzhang at gatech dot edu
Target Milestone: ---
It affects gcc-6 to gcc-trunk. gcc-5 works fine.
Bisect points to r222305.
$ gcc-trunk -v
gcc version 9.0.1 20190322 (experimental) [trunk revision 269869] (GCC)
$ gdb -v
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
# Correct ouutput #
$ gcc-trunk -g abc.c outer.c
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x400486: file abc.c, line 9.
Breakpoint 1, d () at abc.c:9
9 c = 3;
$1 = 1
# Incorrect output at O2 #
$ gcc-trunk -g abc.c outer.c -O2
$ gdb -x cmds -batch a.out
Breakpoint 1 at 0x400380: file abc.c, line 9.
Breakpoint 1, main () at abc.c:18
18 for (; i < 5; i++)
$1 = 0
$ cat abc.c
long a, b;
static int c, f;
static long d() {
int *e = &c;
int i = 0;
for (; i < 1; i++)
;
*e ^= b;
c = 3;
for (; 0;)
optimize_me_not();
;
}
int main() {
int i;
d();
i = 0;
for (; i < 5; i++)
for (; f; f++)
;
a = c;
}
$ cat outer.c
void optimize_me_not() {}
$ cat cmds
b 9
r
p i
kill
q
>From gcc-bugs-return-638232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 04:29:09 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85528] ICE in code_motion_process_successors, at sel-sched.c:6403
Date: Sat, 23 Mar 2019 04:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85528
Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc-*-linux-gnu*, |powerpc-*-linux-gnu*,
|powerpcspe-*-linux-gnu* |powerpcspe-*-linux-gnu*,
| |x86_64-unknown-linux-gnu
--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> ---
The following testcase fails for x86_64 w/ the current trunk:
int oh;
__int128 ii, pa;
unsigned __int128 kn;
void
vz (void)
{
while (oh < 1)
{
if (oh <= kn)
{
__int128 *iu;
if (oh == 0)
{
ii |= pa;
if (ii != 0)
while (kn != 0)
++kn;
}
iu = &pa;
kn *= 3;
pa += kn;
}
++oh;
}
}
% x86_64-unknown-linux-gnu-gcc-9.0.0-alpha20190317 -O2 -fselective-scheduling2
-fvar-tracking-assignments -fno-tree-ter -w -c kchunwgx.c
during RTL pass: sched2
kchunwgx.c: In function 'vz':
kchunwgx.c:29:1: internal compiler error: in code_motion_process_successors, at
sel-sched.c:6399
29 | }
| ^
0x6806f9 code_motion_process_successors
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:6399
0x6806f9 code_motion_path_driver
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:6621
0xd3013b code_motion_process_successors
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:6355
0xd3013b code_motion_path_driver
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:6621
0xd32f39 move_op
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:6713
0xd32f39 move_exprs_to_boundary
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:5236
0xd32f39 schedule_expr_on_boundary
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:5449
0xd34627 fill_insns
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:5591
0xd34627 schedule_on_fences
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7364
0xd34627 sel_sched_region_2
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7502
0xd36538 sel_sched_region_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7544
0xd38056 sel_sched_region(int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7645
0xd38056 sel_sched_region(int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7630
0xd38beb run_selective_scheduling()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sel-sched.c:7731
0xd172a5 rest_of_handle_sched2
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sched-rgn.c:3731
0xd172a5 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/sched-rgn.c:3875
>From gcc-bugs-return-638233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 05:26:13 2019
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Subject: [Bug tree-optimization/89802] New: [9 Regresssion] ICE: verify_gimple failed (error: dead STMT in EH table)
Date: Sat, 23 Mar 2019 05:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89802
Bug ID: 89802
Summary: [9 Regresssion] ICE: verify_gimple failed (error: dead
STMT in EH table)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking, ice-on-valid-code
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-9.0.0-alpha20190317 snapshot (r269746) ICEs when compiling the following
testcase w/ -mfma -O2 (-O3, -Os) -fnon-call-exceptions:
struct ef {
ef (double xy) : m6 (xy)
{
}
~ef ()
{
}
double m6;
};
ef
operator- (ef &db, ef oa)
{
return db.m6 - oa.m6;
}
ef
vu (ef &db)
{
return db - ef (db.m6 * 1.1);
}
% x86_64-unknown-linux-gnu-g++-9.0.0-alpha20190317 -mfma -O2
-fnon-call-exceptions -c xct1znkp.cc
xct1znkp.cc: In function 'ef vu(ef&)':
xct1znkp.cc:20:1: error: dead STMT in EH table
20 | vu (ef &db)
| ^~
_6 = .FMA (_7, 1.100000000000000088817841970012523233890533447265625e+0, _3);
during GIMPLE pass: widening_mul
xct1znkp.cc:20:1: internal compiler error: verify_gimple failed
0xfe2271 verify_gimple_in_cfg(function*, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/tree-cfg.c:5386
0xeb7dff execute_function_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/passes.c:1977
0xeb8d3e execute_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190317/work/gcc-9-20190317/gcc/passes.c:2031
>From gcc-bugs-return-638234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 07:20:41 2019
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Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Sat, 23 Mar 2019 07:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89793
--- Comment #8 from du yang <duyang.seu at gmail dot com> ---
>
> struct Message {
> template<typename T>
> Message(T&& t) : s{t} { }
> string s;
> };
>
By the way, it works on both GCC 8 & 7, if change the code above as below
(change to use assignment),
struct Message {
template<typename T>
Message(T&& t) { s = t; }
string s;
};
>From gcc-bugs-return-638235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 11:12:01 2019
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Subject: [Bug ada/89583] GNAT.Sockets.Bind_Socket fails with IPv4 address
Date: Sat, 23 Mar 2019 11:12:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Added:
> trunk/gcc/testsuite/gnat.dg/socket2.adb
This test fails on x86_64-apple-darwin18:
raised GNAT.SOCKETS.SOCKET_ERROR : [22] Invalid argument
FAIL: gnat.dg/socket2.adb execution test
>From gcc-bugs-return-638236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 12:25:52 2019
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Subject: [Bug target/88521] GCC from r266355 miscompiles x265 for mingw-w64 target
Date: Sat, 23 Mar 2019 12:25:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
Component|c++ |target
Target Milestone|--- |9.0
Summary|gcc 9.0 from r266355 |GCC from r266355
|miscompile x265 for |miscompiles x265 for
|mingw-w64 target |mingw-w64 target
--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Recategorizing.
>From gcc-bugs-return-638237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 12:27:23 2019
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Subject: [Bug target/85667] ms_abi rules aren't followed when returning short structs with float values
Date: Sat, 23 Mar 2019 12:27:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64-pc-linux-gnu |i?86-*-* x86_64-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-23
CC| |ebotcazou at gcc dot gnu.org
Summary|(x86_64) ms_abi rules |ms_abi rules aren't
|aren't followed when |followed when returning
|returning short structs |short structs with float
|with float values |values
Ever confirmed|0 |1
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
The original issue exists in both 32-bit and 64-bit modes. r266355 was broken
but got fixed by r267622 (PR target/88521) so the issue is fixed in 64-bit
mode.
>From gcc-bugs-return-638239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:27:27 2019
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Subject: [Bug fortran/77504] "is used uninitialized" with allocatable string and array constructors
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andrew at fluidgravity dot co.uk
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 87143 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:27:27 2019
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Subject: [Bug fortran/87143] Uninitialized warnings when using automatic array allocation
Date: Sat, 23 Mar 2019 13:27:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 77504 ***
>From gcc-bugs-return-638240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:27:31 2019
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
Bug 24639 depends on bug 87143, which changed state.
Bug 87143 Summary: Uninitialized warnings when using automatic array allocation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87143
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
>From gcc-bugs-return-638241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:43:10 2019
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Subject: [Bug target/60821] gcc 4.8 on MacOS fails depending on -arch order
Date: Sat, 23 Mar 2019 13:43:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #8 from Iain Sandoe <iains at gcc dot gnu.org> ---
For at least 5.x+ the following has been done.
1. note that "-arch xxxx" has a different semantic in the Apple driver from the
general semantic of GCC options. I.E. it is *meant* to be used more than once,
thus there's no positional significance to a given instance.
This has no meaning with the regular GCC driver as noted in the various
comments.
2. If multiple arch flags are presented that conflict (e.g. -arch i386 -arch
x86_64) then a diagnostic is issued and *ALL* the -arch entries are discarded
(the compiler produces code according to its default multilib).
- given (1), there is no reasonable strategy for deciding a "winner" so all
lose.
- at least, it allows a single -arch xxxx to be used in lieu of the GCC
regular multilib flags.
this is present on all open branches so closing as fixed.
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
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Bug 24639 depends on bug 87968, which changed state.
Bug 87968 Summary: [7/8/9 Regression] Warning about uninizialized variables in array constructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87968
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>From gcc-bugs-return-638243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:47:16 2019
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Subject: [Bug fortran/77504] "is used uninitialized" with allocatable string and array constructors
Date: Sat, 23 Mar 2019 13:47:00 -0000
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 87968 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/87968] [7/8/9 Regression] Warning about uninizialized variables in array constructor
Date: Sat, 23 Mar 2019 13:47:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 77504 ***
>From gcc-bugs-return-638245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:52:28 2019
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Subject: [Bug fortran/77504] "is used uninitialized" with allocatable string and array constructors
Date: Sat, 23 Mar 2019 13:52:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The test in comment 7 compiles without any warning with gfortran 6.4.1 and
before.
In a similar way the original test starts to give the warnings
pr77504.f90:10:0: Warning: 'help_text.dim[0].lbound' is used uninitialized in
this function [-Wuninitialized]
pr77504.f90:10:0: Warning: 'help_text.dim[0].ubound' is used uninitialized in
this function [-Wuninitialized]
for gfortran 7 and above.
>From gcc-bugs-return-638246-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:53:51 2019
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Subject: [Bug lto/43038] DECL_PRESERVE_P or attribute((used)) static globals not completely preserved with -flto
Date: Sat, 23 Mar 2019 13:53:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #18 from Iain Sandoe <iains at gcc dot gnu.org> ---
fixed on all open branches (and at least 5.x and 6.x)
>From gcc-bugs-return-638247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 13:56:35 2019
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Subject: [Bug libffi/34311] libffi.call/nested_struct5.c execution tests fail under darwin9 on powerpc
Date: Sat, 23 Mar 2019 13:56:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
libffi is not used for Darwin GCC any more.
>From gcc-bugs-return-638248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 14:42:06 2019
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From: "simon at pushface dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89583] GNAT.Sockets.Bind_Socket fails with IPv4 address
Date: Sat, 23 Mar 2019 14:42:00 -0000
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--- Comment #3 from simon at pushface dot org ---
I just rebuilt r269886 on x86_64-apple-darwin15 (with --disable-bootstrap)
and it passed:
PASS: gnat.dg/socket2.adb (test for excess errors)
PASS: gnat.dg/socket2.adb execution test
Also, running just that test with that compiler on an x64_64-apple-darwin18
machine succeeded.
>From gcc-bugs-return-638249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:01:43 2019
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Subject: [Bug middle-end/81962] -Wmaybe-uninitialized refers to wrong line (and only works with -O3) (Fortran)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81962
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> But this is very likely to be the effect of inlining, and gcc should be able
> to print an inline "stack trace": ...
The warning is gone if I compile the test with '-Wall -O3 -fno-inline'.
>From gcc-bugs-return-638250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:06:27 2019
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Subject: [Bug fortran/88455] False positive for allocatable character array of deferred length, ALLOCATE using SOURCE/MOLD [-Wuninitialized]
Date: Sat, 23 Mar 2019 15:06:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 56670 ***
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
Date: Sat, 23 Mar 2019 15:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
Bug 24639 depends on bug 88455, which changed state.
Bug 88455 Summary: False positive for allocatable character array of deferred length, ALLOCATE using SOURCE/MOLD [-Wuninitialized]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88455
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
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Subject: [Bug fortran/56670] Allocatable-length character var causes bogus warning with -Wuninitialized
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56670
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
CC| |adam at aphirst dot karoo.co.uk
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 88455 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:10:43 2019
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Subject: [Bug fortran/56670] Allocatable-length character var causes bogus warning with -Wuninitialized
Date: Sat, 23 Mar 2019 15:10:00 -0000
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The dump-tree-original shows
...
if (name_format != 0B) goto L.1;
name_format = (character(kind=1)[1:.name_format] *) __builtin_malloc (1);
goto L.2;
L.1:;
if (.name_format == 0) goto L.2;
name_format = (character(kind=1)[1:.name_format] *) __builtin_realloc
((void *) name_format, 1);
L.2:;
.name_format = 0;
...
>From gcc-bugs-return-638254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:32:42 2019
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Subject: [Bug fortran/77504] "is used uninitialized" with allocatable string and array constructors
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=56670
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Warning: '.help_text' is used uninitialized in this function [-Wuninitialized]
This is pr56670.
>From gcc-bugs-return-638255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:48:54 2019
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Subject: [Bug fortran/77504] [7/8/9 Regression] "is used uninitialized" with allocatable string and array constructors
Date: Sat, 23 Mar 2019 15:48:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|"is used uninitialized" |[7/8/9 Regression] "is used
|with allocatable string and |uninitialized" with
|array constructors |allocatable string and
| |array constructors
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #11)
> The test in comment 7 compiles without any warning with gfortran 6.4.1 and
> before.
>
> In a similar way the original test starts to give the warnings
>
> pr77504.f90:10:0: Warning: 'help_text.dim[0].lbound' is used uninitialized
> in this function [-Wuninitialized]
> pr77504.f90:10:0: Warning: 'help_text.dim[0].ubound' is used uninitialized
> in this function [-Wuninitialized]
>
> for gfortran 7 and above.
So, a regression then.
>From gcc-bugs-return-638256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 15:59:02 2019
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Subject: [Bug fortran/68009] [7/8 Regression] prototype for gfortran_runtime_error with inline matmul
Date: Sat, 23 Mar 2019 15:59:00 -0000
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--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Mar 23 15:58:25 2019
New Revision: 269889
URL: https://gcc.gnu.org/viewcvs?rev=269889&root=gcc&view=rev
Log:
2019-03-23 Thomas Koenig <tkoeng@gcc.gnu.org>
PR fortran/68009
Backport from trunk
* iresolve.c: Include trans.h.
(gfc_resolve_fe_runtine_error): Set backend_decl on
resolved_sym.
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/iresolve.c
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Subject: [Bug fortran/68009] [7/8 Regression] prototype for gfortran_runtime_error with inline matmul
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--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Mar 23 16:01:57 2019
New Revision: 269890
URL: https://gcc.gnu.org/viewcvs?rev=269890&root=gcc&view=rev
Log:
2019-03-23 Thomas Koenig <tkoeng@gcc.gnu.org>
PR fortran/68009
Backport from trunk
* iresolve.c: Include trans.h.
(gfc_resolve_fe_runtine_error): Set backend_decl on
resolved_sym.
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/iresolve.c
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Subject: [Bug fortran/37131] inline matmul for small matrix sizes
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Bug 37131 depends on bug 68009, which changed state.
Bug 68009 Summary: [7/8 Regression] prototype for gfortran_runtime_error with inline matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68009
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-638258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:03:24 2019
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Subject: [Bug fortran/68009] [7/8 Regression] prototype for gfortran_runtime_error with inline matmul
Date: Sat, 23 Mar 2019 16:03:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #16 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
>From gcc-bugs-return-638260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:10:36 2019
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Subject: [Bug fortran/89574] [7/8/9 Regression] internal compiler error: in conv_function_val, at fortran/trans-expr.c:3792
Date: Sat, 23 Mar 2019 16:10:00 -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> ---
(In reply to Denis from comment #0)
> The bug occurs when you have a module with some name (lets name it init) and
> it uses a module with an aliased subroutine or function with the same name
> (init) - see the attached source file.
That is invalid, right?
>From gcc-bugs-return-638261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:16:34 2019
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
Date: Sat, 23 Mar 2019 16:16:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Attachment #45989|0 |1
is obsolete| |
--- Comment #22 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 46014
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46014&action=edit
Patch
Previous patch broke gfortran.dg/fmt_g0_6.f08 on hppa64-hp-hpux11.11. It
seems we need to handle the case where ndigits is zero.
>From gcc-bugs-return-638262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:29:18 2019
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From: "dmitrievdv242 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89574] [7/8/9 Regression] internal compiler error: in conv_function_val, at fortran/trans-expr.c:3792
Date: Sat, 23 Mar 2019 16:29:00 -0000
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--- Comment #3 from Denis <dmitrievdv242 at gmail dot com> ---
(In reply to Thomas Koenig from comment #2)
> (In reply to Denis from comment #0)
>
> > The bug occurs when you have a module with some name (lets name it init) and
> > it uses a module with an aliased subroutine or function with the same name
> > (init) - see the attached source file.
>
> That is invalid, right?
No, this is valid, because 'init' module doesn't use the module with this
subroutine. It uses the module, in which this subroutine is aliased as
'test_init'. And the real 'init' subroutine is in another module. So, the
module used in 'init' doesn't contain the 'init' subroutine directly and it is
expected that 'init' module doesn't care about existence of this subroutine.
See the source file for clarification.
Also I think this must work even with directly aliased subroutine, like
module init
use test, test_init => init
>From gcc-bugs-return-638263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:34:53 2019
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Subject: [Bug fortran/89574] [7/8/9 Regression] internal compiler error: in conv_function_val, at fortran/trans-expr.c:3792
Date: Sat, 23 Mar 2019 16:34:00 -0000
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--- Comment #4 from Denis <dmitrievdv242 at gmail dot com> ---
(In reply to Thomas Koenig from comment #2)
> (In reply to Denis from comment #0)
>
> > The bug occurs when you have a module with some name (lets name it init) and
> > it uses a module with an aliased subroutine or function with the same name
> > (init) - see the attached source file.
>
> That is invalid, right?
No, this is valid, because 'init' module doesn't use the module with this
subroutine. It uses the module, in which this subroutine is aliased as
'test_init'. And the real 'init' subroutine is in another module. So, the
module used in 'init' doesn't actually contain the 'init' subroutine and it is
expected that 'init' module doesn't care about the existence of this
subroutine. See the source file for clarification.
Also I believe this must work even with directly aliased subroutine, like:
module init
use test, test_init => init
...
...
end module init
Because this is one of the reasons aliases exist: to prevent name conflicts.
>From gcc-bugs-return-638264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 16:51:54 2019
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Subject: [Bug fortran/77504] [7/8/9 Regression] "is used uninitialized" with allocatable string and array constructors
Date: Sat, 23 Mar 2019 16:51:00 -0000
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--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
In the dump-tree-original I see
...
D.3906 = offset.2;
D.3907 = ubound.0;
D.3908 = (integer(kind=4)[0:] * restrict) c.data;
D.3909 = c.offset;
D.3910 = c.dim[0].lbound;
D.3911 = c.dim[0].ubound;
D.3912 = D.3910 + -1;
{
...
c.dim[0].lbound = 1;
c.dim[0].ubound = NON_LVALUE_EXPR <D.3907>;
c.dim[0].stride = 1;
c.offset = -NON_LVALUE_EXPR <c.dim[0].lbound>;
D.3909 = c.offset;
D.3912 = c.dim[0].lbound + -1;
c.span = 4;
D.3921 = MAX_EXPR <(unsigned long) (D.3919 * 4), 1>;
...
i.e., c.offset and c.dim[0].*bound are used before they are set.
>From gcc-bugs-return-638265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 17:08:20 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/40978] Use named return value (NRV) for functions returning the result as argument
Date: Sat, 23 Mar 2019 17:08:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WONTFIX
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> No feedback in more than two years.
Closing as WONTFIX if this the only way to get some feedback!-(
>From gcc-bugs-return-638266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 17:09:18 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89793] Implicit conversion to std::string is ambiguous on GCC 8.2 but not GCC 7.3
Date: Sat, 23 Mar 2019 17:09:00 -0000
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There's no assignment operator from std::allocator<char>, so it's not
equivalent to construction.
>From gcc-bugs-return-638267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 17:18:35 2019
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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89803] New: Missing AVX512 intrinsics
Date: Sat, 23 Mar 2019 17:18:00 -0000
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Bug ID: 89803
Summary: Missing AVX512 intrinsics
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: crazylht at gmail dot com
Target Milestone: ---
Missing
__mmask8 _mm_mask_fpclass_sd_mask( __mmask8 m, __m128d a, int c)
__mmask8 _mm_mask_fpclass_ss_mask( __mmask8 m, __m128 a, int c)
>From gcc-bugs-return-638268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 17:25:07 2019
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Subject: [Bug target/89803] Missing AVX512 intrinsics
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--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
Also we can use constraint "vm" instead of "v" for vfpclassp[sd] instructions.
ndex: gcc/config/i386/sse.md
===================================================================
--- gcc/config/i386/sse.md (revision 269868)
+++ gcc/config/i386/sse.md (working copy)
@@ -21101,7 +21101,7 @@
(define_insn "avx512dq_fpclass<mode><mask_scalar_merge_name>"
[(set (match_operand:<avx512fmaskmode> 0 "register_operand" "=k")
(unspec:<avx512fmaskmode>
- [(match_operand:VF_AVX512VL 1 "register_operand" "v")
+ [(match_operand:VF_AVX512VL 1 "register_operand" "vm")
(match_operand:QI 2 "const_0_to_255_operand" "n")]
UNSPEC_FPCLASS))]
"TARGET_AVX512DQ"
>From gcc-bugs-return-638269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 18:55:34 2019
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Subject: [Bug fortran/87838] Segmentation fault with function pointer to contained function
Date: Sat, 23 Mar 2019 18:55:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Could you please compile with the -g flag, in order to get a more meaningful
> backtrace? Alternatively try running the executable via gdb or valgrind
> for further debugging.
Any progress before closing the PR as WORKSFORME?
>From gcc-bugs-return-638270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 18:59:09 2019
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Subject: [Bug fortran/64777] [Coarray] CO_BROADCAST: Finalization/dealloc of alloc components missing
Date: Sat, 23 Mar 2019 18:59:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No test provided after four years, closing as INVALID. Please open a new PR if
you have a test case.
>From gcc-bugs-return-638272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 18:59:12 2019
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Subject: [Bug fortran/83700] [Meta-bug] Fortran Coarray issues
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Bug 83700 depends on bug 64777, which changed state.
Bug 64777 Summary: [Coarray] CO_BROADCAST: Finalization/dealloc of alloc components missing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64777
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Subject: [Bug fortran/37336] [F03] Finish derived-type finalization
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Bug 37336 depends on bug 64777, which changed state.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64777
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>From gcc-bugs-return-638273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 20:59:01 2019
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
Date: Sat, 23 Mar 2019 20:59:00 -0000
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--- Comment #23 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #22)
> Created attachment 46014 [details]
> Patch
>
> Previous patch broke gfortran.dg/fmt_g0_6.f08 on hppa64-hp-hpux11.11. It
> seems we need to handle the case where ndigits is zero.
I regression tested this on x86_64 and all is well. Patch is approved to commit
if fixes on hppa64.
Thanks for effort!
>From gcc-bugs-return-638274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Mar 23 23:08:48 2019
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89776] sse-movmskb-1.c testcase fails on PPC64 BE 32 bit Power8
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target|powerpc-*-*-* |powerpc*-*-*
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed (on trunk, this code is not on 8 (yet)).
>From gcc-bugs-return-638275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 01:11:05 2019
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Subject: [Bug libstdc++/41861] [DR 887][C++0x] <condition_variable> does not use monotonic_clock
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Austin Beer <asbeer at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |asbeer at gmail dot com
--- Comment #16 from Austin Beer <asbeer at gmail dot com> ---
Back in 2017 I spent a lot of time (along with the maintainer) testing and
fixing time-related QOI issues in the Boost.Thread library, which were included
in Boost 1.67. The two main solutions we employed were:
1. We used chrono::steady_clock as the primary clock inside condition_variable.
2. When converting from another clock to chrono::steady_clock in *_until()
functions, we polled the other clock periodically (i.e. every 100 milliseconds)
in case the other clock had jumped.
Here is the PR, the test code, and the final test results after fixing as much
as we could.
https://github.com/boostorg/thread/pull/142
https://github.com/austin-beer/test-time-jumps/blob/master/test_time_jumps.cpp
https://github.com/austin-beer/test-time-jumps/blob/master/linux_results_develop1_default.txt
I've also created a similar test for libstdc++ and uploaded those results. I
tested against GCC 8.3.0.
https://github.com/austin-beer/test-time-jumps/blob/master/test_time_jumps_libstdcxx.cpp
https://github.com/austin-beer/test-time-jumps/blob/master/test_time_jumps_libstdcxx_results.txt
So I support Mike Crowe's suggestion that std::condition_variable be changed to
use std::chrono::steady_clock.
>From gcc-bugs-return-638276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 03:14:47 2019
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Subject: [Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]
Date: Sun, 24 Mar 2019 03:14:00 -0000
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jynelson at email dot sc.edu changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jynelson at email dot sc.edu
--- Comment #14 from jynelson at email dot sc.edu ---
Bump. This hit me recently, is there a reason the patch hasn't been merged? Any
changes I can contribute to get it in faster? I've checked on 8.2.0 and it
doesn't look like this is in either gcc or g++.
>From gcc-bugs-return-638277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 06:36:55 2019
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Subject: [Bug other/89804] New: optimization opportunity: move variable from stack to register
Date: Sun, 24 Mar 2019 06:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89804
Bug ID: 89804
Summary: optimization opportunity: move variable from stack to
register
Product: gcc
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Description basically is here https://godbolt.org/z/vULPAZ
As I know from
https://stackoverflow.com/questions/55314885/compiler-optimization-move-variable-from-stack-to-register
a compiler is allowed to optimize a stack variable here.
>From gcc-bugs-return-638278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 10:01:34 2019
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Subject: [Bug c/89805] New: Not accurate line number -Werror=unused-macros
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Bug ID: 89805
Summary: Not accurate line number -Werror=unused-macros
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Version: 9.0
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Godbolt trunk
should show line number of the macro, not the end of the file.
Expected:
<source>:1:1: error: macro "DISPLAY_SLEEPS" is not used [-Werror=unused-macros]
Actual:
<source>:6:1: error: macro "DISPLAY_SLEEPS" is not used [-Werror=unused-macros]
Full log below.
Clang has accurate line number BTW.
x86-64 gcc (trunk)
#1 with x86-64 gcc (trunk)
<source>:6:1: error: macro "DISPLAY_SLEEPS" is not used [-Werror=unused-macros]
6 | }
| ^
cc1plus: some warnings being treated as errors
Compiler returned: 1
#define DISPLAY_SLEEPS 0
int main(void)
{
return 0;
}
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Subject: [Bug c++/89806] New: Different behaviour for "pragma diagnostic disabled" between gcc and g++
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between gcc and g++
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Sample code:
#pragma GCC diagnostic ignored "-Wdate-time"
const char* g_test = "dirty-" __DATE__;
When compiling with g++ (g++ -Werror=date-time) this produces:
<source>:2:31: error: macro "__DATE__" might prevent reproducible builds
[-Werror=date-time]
2 | const char* g_test = "dirty-" __DATE__;
| ^~~~~~~~
cc1plus: some warnings being treated as errors
Compiler returned: 1
But with GCC this compiles without errors (gcc -Werror=date-time).
https://godbolt.org/z/a4ZymR
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Subject: [Bug target/89803] Missing AVX512 intrinsics
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--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
Created attachment 46015
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46015&action=edit
Add intrinsics and tests.
Add intrinsics and cover tests.
>From gcc-bugs-return-638281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 12:03:55 2019
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Subject: [Bug c/89807] New: Incorrect -Wconversion warning when shifting uint32_t with 24
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Bug ID: 89807
Summary: Incorrect -Wconversion warning when shifting uint32_t
with 24
Product: gcc
Version: 8.3.0
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https://godbolt.org/z/x2vI6l
Sample code:
#include <stdint.h>
int test(uint32_t v)
{
uint8_t a = (v >> 24) & 0xFF; // ERROR: produces warning
uint8_t a2 = v >> 24; // ERROR: produces warning
uint8_t b = (v >> 16) & 0xFF; // OK
uint8_t c = (v >> 8) & 0xFF; // OK
uint8_t d = v & 0xFF; // OK
return a + a2 + b + c + d;
}
Compile with -Werror=conversion:
<source>: In function 'test':
<source>:5:17: error: conversion from 'uint32_t' {aka 'unsigned int'} to
'uint8_t' {aka 'unsigned char'} may change value [-Werror=conversion]
5 | uint8_t a = (v >> 24) & 0xFF;
| ^
<source>:6:18: error: conversion from 'uint32_t' {aka 'unsigned int'} to
'uint8_t' {aka 'unsigned char'} may change value [-Werror=conversion]
6 | uint8_t a2 = v >> 24;
| ^
cc1: some warnings being treated as errors
Compiler returned: 1
P.S. Clang compiles this code without warnings.
>From gcc-bugs-return-638282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 12:51:56 2019
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Subject: [Bug fortran/78865] [7/8/9 Regression] ICE in create_tmp_var, at gimple-expr.c:473
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Mar 24 12:51:19 2019
New Revision: 269895
URL: https://gcc.gnu.org/viewcvs?rev=269895&root=gcc&view=rev
Log:
2019-03-24 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/78865
* interface.c (compare_actual_formal): Change errors about
missing or extra to gfc_error_now to make sure they are issued.
Change "spec" to "specifier" in message.
* resolve.c (resolve_global_procedure): Also check for mismatching
interface with global symbols if the namespace has already been
resolved.
2019-03-24 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/78865
* gfortran.dg/altreturn_10.f90: New test.
* gfortran.dg/whole_file_3.f90: Change dg-warning to dg-error.
Added:
trunk/gcc/testsuite/gfortran.dg/altreturn_10.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/interface.c
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/whole_file_3.f90
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Subject: [Bug c++/89808] New: Disable "#pragma once in main file"
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I am building an environnement to execute c++ code and I do need to use #pragma
once in my main cpp source code (and all cpp files actually). When I compile, I
get the "#pragma once in main file" warning.
The only way to turn this warning off is to disable all warnings with the -w
option. I want to only disable this specific warning and keep all the other
ones. gcc needs something like clang's -Wno-pragma-once-outside-header option.
I do appreciate that this warning is actually useful but there are corner cases
where this warning must be disabled.
>From gcc-bugs-return-638284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:14:06 2019
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Subject: [Bug middle-end/86912] Function pointer imposes an optimization barrier
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Nikita Kniazev <nok.raven at gmail dot com> changed:
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--- Comment #1 from Nikita Kniazev <nok.raven at gmail dot com> ---
Making `visitors` a `static constexpr` turns the output to almost the same as
Clang produces for this code (except an unnecessary mov).
>From gcc-bugs-return-638285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:16:19 2019
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Subject: [Bug bootstrap/71409] darwin Comparing stages 2 and 3 slight failure
Date: Sun, 24 Mar 2019 13:16:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> ---
bootstrap is successful on open branches [no compare fails] (and on 6.5 for
that matter) - closing as fixed.
>From gcc-bugs-return-638286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:21:07 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
have you had a chance to try with revised 7.x (or 8 or 9)?
NOTE: LTO debug support is still not going to work (we need changes outside of
GCC to make that happen).
>From gcc-bugs-return-638287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:24:57 2019
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Subject: [Bug pch/62001] Many tests fail with PCH
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
we only see the random fails mentioned in PR61250 on the open branches.
Closing as fixed.
>From gcc-bugs-return-638288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:27:59 2019
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Subject: [Bug target/61593] Support '#pragma mark - foo' on non-Darwin targets (by simply ignoring it without warning)
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
I think you only require this to work for Darwin, right?
so as Eric says, we could have another darwin-specific pragma.
Patch Eric? ( ;) )
>From gcc-bugs-return-638289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:31:08 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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--- Comment #6 from Daniel Vollmer <zerolo at gmail dot com> ---
Is 7.4 or 8.3 new enough to be worthwhile trying?
>From gcc-bugs-return-638290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:35:17 2019
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Subject: [Bug debug/68771] Darwin: Profile guided optimisation with cold sections and invalid symbol redefinition
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--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Daniel Vollmer from comment #6)
> Is 7.4 or 8.3 new enough to be worthwhile trying?
The specific thing you reported should be fixed on both of those branches.
General support for LTO debug is not (I have patches for the GCC part, but some
changes are also needed to dsymutil and not had a chance to do those yet).
>From gcc-bugs-return-638291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 13:55:32 2019
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Subject: [Bug target/80782] Configure options to use llvm/clang assembler on Mac
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--- Comment #12 from Iain Sandoe <iains at gcc dot gnu.org> ---
AFAIK the use of the clang assembler (i.e. calling cctools as which then spawns
clang -cc1as) is working on all open branches (and on the closed 6.5).
please could you be more specific about exactly what's not working?
- i.e if you're on an older version of the OS.
- version of Xcode.
Note that the default for which assembler backend is called does depend on the
Xcode version.
>From gcc-bugs-return-638292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 15:21:30 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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--- Comment #18 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Sun Mar 24 15:20:52 2019
New Revision: 269896
URL: https://gcc.gnu.org/viewcvs?rev=269896&root=gcc&view=rev
Log:
PR rtl-optimization/87761
* regcprop.c (copyprop_hardreg_forward_1): Check may_trap_p on SET,
not INSN. Also check RTX_FRAME_RELATED_P. Queue insns for DF rescan
as needed.
(pass_cprop_hardreg::execute): Add df note problem and defer insn
rescans. Reprocess blocks as needed, calling df_analyze before
reprocessing. Always call df_analyze before fixing up debug bind
insns.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regcprop.c
>From gcc-bugs-return-638293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 15:22:06 2019
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
Date: Sun, 24 Mar 2019 15:22:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #19 from Jeffrey A. Law <law at redhat dot com> ---
Fixed by various changes on the trunk.
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Subject: [Bug target/61593] Support '#pragma mark - foo' on non-Darwin targets (by simply ignoring it without warning)
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--- Comment #7 from Sean <sean@rogue-research.com> ---
Iain, no. Please see comment #2.
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Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
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Nicholas Krause <xerofoify at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xerofoify at gmail dot com
--- Comment #1 from Nicholas Krause <xerofoify at gmail dot com> ---
I just compiled this like so:
./bin/g++ test.cpp -fopenmp -Wall -fconcepts -o name test2.cpp
and got this on a build from yesterday:
g++: internal compiler error: Segmentation fault signal terminated program
cc1plus
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
This code is linked to another version of this
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88395 as it crashes before your
warning issue. I posted to
the list here about a possible fix yesterday for it:
https://gcc.gnu.org/ml/gcc/2019-03/msg00185.html
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Subject: [Bug target/61593] Support '#pragma mark - foo' on non-Darwin targets (by simply ignoring it without warning)
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--- Comment #8 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Sean from comment #7)
> Iain, no. Please see comment #2.
ah gotcha .. then it's a question of producing a general patch rather than a
darwin-specific one and posting it for review (with some suitable justification
as to its merit).
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Subject: [Bug target/89809] New: movzwl is not utilized when uint16_t is loaded with bit-shifts (while memcpy does)
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Bug ID: 89809
Summary: movzwl is not utilized when uint16_t is loaded with
bit-shifts (while memcpy does)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
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Host: x86_64
Target: x86_64
#include <cstdint>
#include <cstring>
// could be just a single movzwl
std::uint16_t foo(unsigned char const* p)
{
return static_cast<std::uint16_t>(p[0])
| (static_cast<std::uint16_t>(p[1]) << 8)
;
}
// the same, but for uint32_t is recognized
std::uint32_t bar(unsigned char const* p)
{
return static_cast<std::uint32_t>(p[0])
| (static_cast<std::uint32_t>(p[1]) << 8)
| (static_cast<std::uint32_t>(p[2]) << 16)
| (static_cast<std::uint32_t>(p[3]) << 24)
;
}
// memcpy for uint16_t is also good, and generates movzwl
std::uint16_t qaz(unsigned char const* p)
{
std::uint16_t tmp = 0;
std::memcpy(&tmp, p, sizeof(tmp));
return tmp;
}
https://godbolt.org/z/ZQl1tF
movzwl could be also utilized in other byte-size integers load. See the
attachment or https://godbolt.org/z/PQwc87
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Subject: [Bug target/89803] Missing AVX512 intrinsics
Date: Sun, 24 Mar 2019 17:09:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Hongtao.liu from comment #1)
> Also we can use constraint "vm" instead of "v" for vfpclassp[sd]
> instructions.
>
> ndex: gcc/config/i386/sse.md
> ===================================================================
> --- gcc/config/i386/sse.md (revision 269868)
> +++ gcc/config/i386/sse.md (working copy)
> @@ -21101,7 +21101,7 @@
> (define_insn "avx512dq_fpclass<mode><mask_scalar_merge_name>"
> [(set (match_operand:<avx512fmaskmode> 0 "register_operand" "=k")
> (unspec:<avx512fmaskmode>
> - [(match_operand:VF_AVX512VL 1 "register_operand" "v")
> + [(match_operand:VF_AVX512VL 1 "register_operand" "vm")
> (match_operand:QI 2 "const_0_to_255_operand" "n")]
> UNSPEC_FPCLASS))]
> "TARGET_AVX512DQ"
Either "register_operand" "v", or "vector_operand" "vm" (or
nonimmediate_operand etc.).
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Subject: [Bug tree-optimization/89809] movzwl is not utilized when uint16_t is loaded with bit-shifts (while memcpy does)
Date: Sun, 24 Mar 2019 17:17:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-24
Component|target |tree-optimization
Ever confirmed|0 |1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Strange, the bswap pass is supposed to handle 16 bits just as well as 32.
The shift is done in type 'int', maybe the mix between int and short confuses
it.
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From: "nok.raven at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89810] New: Suboptimal codegen: integer load/assemble from in-register array of uint8_t
Date: Sun, 24 Mar 2019 17:45:00 -0000
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Bug ID: 89810
Summary: Suboptimal codegen: integer load/assemble from
in-register array of uint8_t
Product: gcc
Version: 9.0
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Clang optimizes it perfectly, while GCC does byte-per-byte assemble (except for
32/64bit cases) https://godbolt.org/z/8b_D9A
#include <cstdint>
#include <array>
// suboptimal
std::uint16_t foo(std::array<std::uint8_t, 2> x)
{
return static_cast<std::uint16_t>(x[0])
| (static_cast<std::uint16_t>(x[1]) << 8)
;
}
// suboptimal
std::uint32_t foo(std::array<std::uint8_t, 3> x)
{
return static_cast<std::uint32_t>(x[0])
| (static_cast<std::uint32_t>(x[1]) << 8)
| (static_cast<std::uint32_t>(x[2]) << 16)
;
}
// good
std::uint32_t foo(std::array<std::uint8_t, 4> x)
{
return static_cast<std::uint32_t>(x[0])
| (static_cast<std::uint32_t>(x[1]) << 8)
| (static_cast<std::uint32_t>(x[2]) << 16)
| (static_cast<std::uint32_t>(x[3]) << 24)
;
}
// suboptimal
std::uint64_t foo(std::array<std::uint8_t, 5> x)
{
return static_cast<std::uint64_t>(x[0])
| (static_cast<std::uint64_t>(x[1]) << 8)
| (static_cast<std::uint64_t>(x[2]) << 16)
| (static_cast<std::uint64_t>(x[3]) << 24)
| (static_cast<std::uint64_t>(x[4]) << 32)
;
}
// suboptimal
std::uint64_t foo(std::array<std::uint8_t, 6> x)
{
return static_cast<std::uint64_t>(x[0])
| (static_cast<std::uint64_t>(x[1]) << 8)
| (static_cast<std::uint64_t>(x[2]) << 16)
| (static_cast<std::uint64_t>(x[3]) << 24)
| (static_cast<std::uint64_t>(x[4]) << 32)
| (static_cast<std::uint64_t>(x[5]) << 40)
;
}
// suboptimal
std::uint64_t foo(std::array<std::uint8_t, 7> x)
{
return static_cast<std::uint64_t>(x[0])
| (static_cast<std::uint64_t>(x[1]) << 8)
| (static_cast<std::uint64_t>(x[2]) << 16)
| (static_cast<std::uint64_t>(x[3]) << 24)
| (static_cast<std::uint64_t>(x[4]) << 32)
| (static_cast<std::uint64_t>(x[5]) << 40)
| (static_cast<std::uint64_t>(x[6]) << 48)
;
}
// good
std::uint64_t foo(std::array<std::uint8_t, 8> x)
{
return static_cast<std::uint64_t>(x[0])
| (static_cast<std::uint64_t>(x[1]) << 8)
| (static_cast<std::uint64_t>(x[2]) << 16)
| (static_cast<std::uint64_t>(x[3]) << 24)
| (static_cast<std::uint64_t>(x[4]) << 32)
| (static_cast<std::uint64_t>(x[5]) << 40)
| (static_cast<std::uint64_t>(x[6]) << 48)
| (static_cast<std::uint64_t>(x[7]) << 56)
;
}
>From gcc-bugs-return-638301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 18:08:46 2019
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Subject: [Bug fortran/71861] [7/8/9 Regression] [F03] ICE in write_symbol(): bad module symbol
Date: Sun, 24 Mar 2019 18:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71861
--- Comment #11 from janus at gcc dot gnu.org ---
Author: janus
Date: Sun Mar 24 18:08:10 2019
New Revision: 269898
URL: https://gcc.gnu.org/viewcvs?rev=269898&root=gcc&view=rev
Log:
fix PR 71861
2019-03-24 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* symbol.c (check_conflict): ABSTRACT attribute conflicts with
INTRINSIC attribute.
2019-03-24 Janus Weil <janus@gcc.gnu.org>
PR fortran/71861
* gfortran.dg/interface_abstract_5.f90: New test case.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/interface_abstract_5.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/symbol.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 18:31:25 2019
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From: "nok.raven at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89811] New: uint32_t load is not recognized if shifts are done in a fixed-size loop
Date: Sun, 24 Mar 2019 18:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89811
Bug ID: 89811
Summary: uint32_t load is not recognized if shifts are done in
a fixed-size loop
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: nok.raven at gmail dot com
Target Milestone: ---
Host: x86_64
Target: x86_64
I was expecting that fixed-size loop will be unrolled and the uint32_t load
pattern is recognized, but it does not happen. Clang has no problems with this
https://godbolt.org/z/8ES09V
#include <cstdint>
#include <cstring>
// recognized
std::uint32_t good(const unsigned char *p)
{
std::uint32_t result = 0;
result |= (static_cast<std::uint32_t>(p[0]) << 0);
result |= (static_cast<std::uint32_t>(p[1]) << 8);
result |= (static_cast<std::uint32_t>(p[2]) << 16);
result |= (static_cast<std::uint32_t>(p[3]) << 24);
return result;
}
// not recognized if done in a loop
std::uint32_t loop(const unsigned char *p)
{
std::uint32_t result = 0;
for (int i = 0; i < 4; ++i)
result |= (static_cast<std::uint32_t>(p[i]) << (i * 8));
return result;
}
// other variations are not recognized too
std::uint32_t bad(const unsigned char *p)
{
std::uint32_t result = 0;
//result <<= 8;
result |= static_cast<std::uint32_t>(p[3]);
result <<= 8;
result |= static_cast<std::uint32_t>(p[2]);
result <<= 8;
result |= static_cast<std::uint32_t>(p[1]);
result <<= 8;
result |= static_cast<std::uint32_t>(p[0]);
return result;
}
std::uint32_t loop2(const unsigned char *p)
{
std::uint32_t result = 0;
for (int i = 0; i < 4; ++i) {
result <<= 8;
result |= static_cast<std::uint32_t>(p[3 - i]);
}
return result;
}
>From gcc-bugs-return-638303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 19:24:46 2019
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Subject: [Bug c++/89806] Different behaviour for "pragma diagnostic disabled" between gcc and g++
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89806
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related or a dup of bug 53431.
>From gcc-bugs-return-638304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 19:36:02 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
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--- Comment #2 from Arsène Pérard-Gayot <perard at cg dot uni-saarland.de> ---
(In reply to Nicholas Krause from comment #1)
> I just compiled this like so:
> ./bin/g++ test.cpp -fopenmp -Wall -fconcepts -o name test2.cpp
> and got this on a build from yesterday:
>
> g++: internal compiler error: Segmentation fault signal terminated program
> cc1plus
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <https://gcc.gnu.org/bugs/> for instructions.
>
> This code is linked to another version of this
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88395 as it crashes before your
> warning issue. I posted to
> the list here about a possible fix yesterday for it:
>
> https://gcc.gnu.org/ml/gcc/2019-03/msg00185.html
Could you please explain the connection with this bug? From what I see, what
you are reporting here is unrelated to the warning issue, and the segmentation
fault only occurs because of your use of the "-fconcepts" flag. Please correct
me if I am wrong.
>From gcc-bugs-return-638305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 20:43:29 2019
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Subject: [Bug c/89805] Not accurate line number -Werror=unused-macros
Date: Sun, 24 Mar 2019 20:43:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.8.5, 7.3.0
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This only happens with the C++ front-end:
apinski@xeond:~/src/toolchain$ g++ t8.c -Werror=unused-macros
t8.c:6:1: error: macro "DISPLAY_SLEEPS" is not used [-Werror=unused-macros]
}
^
cc1plus: some warnings being treated as errors
apinski@xeond:~/src/toolchain$ gcc t8.c -Werror=unused-macros
t8.c:1:0: error: macro "DISPLAY_SLEEPS" is not used [-Werror=unused-macros]
#define DISPLAY_SLEEPS 0
cc1: some warnings being treated as errors
>From gcc-bugs-return-638306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 20:45:57 2019
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Subject: [Bug c++/89805] Not accurate line number -Werror=unused-macros
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-24
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There are other related issues with the C++ front-end and the preprocessor and
line numbers. IIRC this is due to C++ doing tokenization all at once rather
than doing it on demand. That was done to speed up things but maybe it has
caused more problems than it solved. Note that change was done a long time
ago, maybe 9 years ago or even more.
>From gcc-bugs-return-638307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 21:16:51 2019
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Subject: [Bug c++/89805] Not accurate line number -Werror=unused-macros
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Jonny Grant <jg at jguk dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.6.4
--- Comment #3 from Jonny Grant <jg at jguk dot org> ---
Many thanks for checking this Andrew
>From gcc-bugs-return-638308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 21:18:37 2019
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Subject: [Bug tree-optimization/89804] optimization opportunity: move variable from stack to register
Date: Sun, 24 Mar 2019 21:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89804
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-24
Component|other |tree-optimization
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is the testcase (and removed use of the headers):
typedef unsigned long long uint64_t;
uint64_t uint5korr(const unsigned char *p)
{
uint64_t result = 0;
__builtin_memcpy(&result, p, 5);
return result;
}
---- CUT ---
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Subject: [Bug tree-optimization/89804] optimization opportunity: move variable from stack to register
Date: Sun, 24 Mar 2019 21:21:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> Here is the testcase (and removed use of the headers):
> typedef unsigned long long uint64_t;
>
> uint64_t uint5korr(const unsigned char *p)
> {
> uint64_t result = 0;
> __builtin_memcpy(&result, p, 5);
> return result;
> }
> ---- CUT ---
The memcpy could be changed into a BIT_INSERT which will then be optimized
correctly.
>From gcc-bugs-return-638310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 21:57:31 2019
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Subject: =?UTF-8?B?W0J1ZyBjLzg5ODEyXSBOZXc6IGluY29ycmVjdCBtYXhpbXVtIGluIGVycm9y?= =?UTF-8?B?OiByZXF1ZXN0ZWQgYWxpZ25tZW50IOKAmDUzNjg3MDkxMuKAmSBleGNlZWRz?= =?UTF-8?B?IG1heGltdW0gMjE0NzQ4MzY0OA==?Date: Sun, 24 Mar 2019 21:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89812
Bug ID: 89812
Summary: incorrect maximum in error: requested alignment
‘536870912’ exceeds maximum 2147483648
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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The error below is justified but the value of the requested alignment (1 << 29,
or 536,870,912) does not exceed 2,147,483,648, or INT_MAX + 1U).
The maximum value looks like the result of a typo introduced in r265977
committed to fix bug 87795.
$ cat x.c && gcc -S x.c
typedef __attribute__ ((aligned (1U << 29))) char X;
x.c:1:1: error: requested alignment ‘536870912’ exceeds maximum 2147483648
1 | typedef __attribute__ ((aligned (1U << 29))) char X;
| ^~~~~~~
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Subject: =?UTF-8?B?W0J1ZyBjLzg5ODEyXSBpbmNvcnJlY3QgbWF4aW11bSBpbiBlcnJvcjogcmVx?= =?UTF-8?B?dWVzdGVkIGFsaWdubWVudCDigJg1MzY4NzA5MTLigJkgZXhjZWVkcyBtYXhp?= =?UTF-8?B?bXVtIDIxNDc0ODM2NDg=?Date: Sun, 24 Mar 2019 21:57:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-24
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Severity|normal |minor
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Subject: [Bug fortran/82721] [7/8/9 Regression] Error message with corrupted text, sometimes ICE
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Valgrind reports the problem as
asdf.f90:3:25:
3 | character(len(c)) :: b
| 1
Fehler: Symbol »b« bei (1) hat bereits grundlegenden Typen REAL
==28874== Invalid read of size 8
==28874== at 0x8CD014: check_host_association (resolve.c:5756)
==28874== by 0x8CD014: gfc_resolve_expr(gfc_expr*) (resolve.c:6879)
==28874== by 0x8D1A98: resolve_index_expr(gfc_expr*) (resolve.c:11927)
==28874== by 0x8D1BD4: resolve_charlen(gfc_charlen*) [clone .part.0]
(resolve.c:11979)
..
==28874== Address 0x5872a18 is 40 bytes inside a block of size 48 free'd
==28874== at 0x4C2B390: free (vg_replace_malloc.c:530)
==28874== by 0x8EF361: gfc_delete_symtree(gfc_symtree**, char const*)
(symbol.c:2962)
==28874== by 0x8F09F1: gfc_restore_last_undo_checkpoint() (symbol.c:3714)
==28874== by 0x8ABE87: reject_statement() (parse.c:2576)
==28874== by 0x8AC9C1: match_word (parse.c:70)
==28874== by 0x8AC9C1: decode_statement() (parse.c:376)
...
Looking at where the error is issued, gfc_add_type notices that
there already is a symbol, hands this up to build_sym, which returns
false to variable_decl, and when things finally go up all the way
to match_word, reject_statement() deletes the symtree.
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Subject: [Bug fortran/85537] [7/8/9 Regression] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Sun, 24 Mar 2019 22:58:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 46016
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46016&action=edit
Assembly for test case
Looking at the assembly of the test case in comment #6 (with -g -fverbose-asm
only):
.LBE2:
# a.f90:29: a = a + 1
.loc 1 29 0
movl (%rbx), %eax # CHAIN.4_10(D)->a, _11
addl $1, %eax #, _12
movl %eax, (%rbx) # _12, CHAIN.4_10(D)->a
When called through a procedure pointer, rbx no longer contains the
address of a.
Looking further up, we have
movq %r10, %rbx # CHAIN.4, CHAIN.4
movq %r10, -552(%rbp) # CHAIN.4,
.LBB2:
so %r10 is clobbered. This happens in the call of _gfortran_st_write.
Looking at the ABI, %r10 is not supposed to be preserved.
Data point: This works on POWER9.
This looks like a target bug to me.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85537] [7/8/9 Regression] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Sun, 24 Mar 2019 23:01:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-pc-linux-gnu
Priority|P4 |P3
Component|fortran |rtl-optimization
--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Resetting priority to default, setting component to rtl-optimization and adding
failing target.
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Subject: [Bug target/89803] Missing AVX512 intrinsics
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jakub Jelinek from comment #3)
> (In reply to Hongtao.liu from comment #1)
> > Also we can use constraint "vm" instead of "v" for vfpclassp[sd]
> > instructions.
> >
> > ndex: gcc/config/i386/sse.md
> > ===================================================================
> > --- gcc/config/i386/sse.md (revision 269868)
> > +++ gcc/config/i386/sse.md (working copy)
> > @@ -21101,7 +21101,7 @@
> > (define_insn "avx512dq_fpclass<mode><mask_scalar_merge_name>"
> > [(set (match_operand:<avx512fmaskmode> 0 "register_operand" "=k")
> > (unspec:<avx512fmaskmode>
> > - [(match_operand:VF_AVX512VL 1 "register_operand" "v")
> > + [(match_operand:VF_AVX512VL 1 "register_operand" "vm")
> > (match_operand:QI 2 "const_0_to_255_operand" "n")]
> > UNSPEC_FPCLASS))]
> > "TARGET_AVX512DQ"
>
> Either "register_operand" "v", or "vector_operand" "vm" (or
> nonimmediate_operand etc.).
It should be nonimmediate_operand since it supports unaligned memory.
>From gcc-bugs-return-638316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 23:06:39 2019
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Subject: [Bug rtl-optimization/85537] [7/8/9 Regression] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Sun, 24 Mar 2019 23:06:00 -0000
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> The test works for me with 4.8.5. The change occurred between revisions
> r2370089 (2016-06-04, OK) and r237310 + one patch (2016-06-10, wrong code).
The only Fortran commits in that range are r237105 and r237108,
neither of them appear to touch the area in question.
>From gcc-bugs-return-638317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 23:09:09 2019
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Summary|incorrect maximum in error: |[9 Regression] incorrect
|requested alignment |maximum in error: requested
|‘536870912’ exceeds maximum |alignment ‘536870912’
|2147483648 |exceeds maximum 2147483648
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Another bug in the same code:
$ cat x.c && gcc -S b.c
typedef __attribute__ ((aligned (1U << 29))) char X;
b.c:1:1: internal compiler error: in tree_to_shwi, at tree.c:7267
1 | __attribute__ ((aligned ((__UINT64_TYPE__)1 << 63))) char x;
| ^~~~~~~~~~~~~
0x15ba28f tree_to_shwi(tree_node const*)
/src/gcc/git-svn/gcc/tree.c:7267
0x90f6ae check_user_alignment(tree_node const*, bool, bool)
/src/gcc/git-svn/gcc/c-family/c-common.c:5302
0x97ab42 common_handle_aligned_attribute
/src/gcc/git-svn/gcc/c-family/c-attribs.c:2024
0x97b4e4 handle_aligned_attribute
/src/gcc/git-svn/gcc/c-family/c-attribs.c:2183
0x7f2bc1 decl_attributes(tree_node**, tree_node*, int, tree_node*)
/src/gcc/git-svn/gcc/attribs.c:718
0x80da64 c_decl_attributes
/src/gcc/git-svn/gcc/c/c-decl.c:4817
0x80e006 start_decl(c_declarator*, c_declspecs*, bool, tree_node*)
/src/gcc/git-svn/gcc/c/c-decl.c:4956
0x8862ac c_parser_declaration_or_fndef
/src/gcc/git-svn/gcc/c/c-parser.c:2154
0x884f1a c_parser_external_declaration
/src/gcc/git-svn/gcc/c/c-parser.c:1653
0x884a1b c_parser_translation_unit
/src/gcc/git-svn/gcc/c/c-parser.c:1534
0x8beced c_parse_file()
/src/gcc/git-svn/gcc/c/c-parser.c:19854
0x94ea72 c_common_parse_file()
/src/gcc/git-svn/gcc/c-family/c-opts.c:1156
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-638318-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Mar 24 23:15:51 2019
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Subject: [Bug target/89803] Missing AVX512 intrinsics
Date: Sun, 24 Mar 2019 23:15:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Well, it is a TARGET_AVX512DQ insn, which implies TARGET_AVX, and for
TARGET_AVX there is no difference between nonimmediate_operand and
vector_operand.
>From gcc-bugs-return-638319-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 00:22:28 2019
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01166.html
>From gcc-bugs-return-638320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 01:37:58 2019
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Subject: =?UTF-8?B?W0J1ZyBjLzg5ODEzXSBOZXc6IGJvZ3VzIHdhcm5pbmc6IOKAmWFzc3VtZV9h?= =?UTF-8?B?bGlnbmVk4oCZIDxsYXJnZSBpbnRlZ2VyPiBpcyBub3QgYW4gaW50ZWdlciBj?= =?UTF-8?B?b25zdGFudA==?Date: Mon, 25 Mar 2019 01:37:00 -0000
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Bug ID: 89813
Summary: bogus warning: ’assume_aligned’ <large integer> is not
an integer constant
Product: gcc
Version: 9.0
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The warning below that 9223372036854775808 is not an integer constant is
incorrect: the number is an integer constant, it just exceeds the supported
maximum. It's caused by using tree_fits_shwi_p() to detect both excessive
values and non-integers.
The error below is an example of what a better warning should look like.
$ cat b.c && gcc -S b.c
#define N ((__UINT64_TYPE__)1 << 63)
__attribute__ ((assume_aligned (N))) void* f (void);
struct S
{
__attribute__ ((warn_if_not_aligned (N))) int i;
};
b.c:3:1: warning: ‘assume_aligned’ attribute 9223372036854775808 is not an
integer constant [-Wattributes]
3 | __attribute__ ((assume_aligned (N))) void* f (void);
| ^~~~~~~~~~~~~
b.c:7:3: error: requested alignment ‘9223372036854775808’ exceeds maximum
2147483648
7 | __attribute__ ((warn_if_not_aligned (N))) int i;
| ^~~~~~~~~~~~~
>From gcc-bugs-return-638321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 03:10:41 2019
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Subject: [Bug libffi/34311] libffi.call/nested_struct5.c execution tests fail under darwin9 on powerpc
Date: Mon, 25 Mar 2019 03:10:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=46986
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #5)
> libffi is not used for Darwin GCC any more.
Not currently, but it might be again if bug 46986 is ever fixed, since Go uses
libffi. So I guess we can reopen this then, if that ever happens.
>From gcc-bugs-return-638322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 04:04:00 2019
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From: "xerofoify at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
Date: Mon, 25 Mar 2019 04:03:00 -0000
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--- Comment #3 from Nicholas Krause <xerofoify at gmail dot com> ---
(In reply to Arsène Pérard-Gayot from comment #2)
> (In reply to Nicholas Krause from comment #1)
> > I just compiled this like so:
> > ./bin/g++ test.cpp -fopenmp -Wall -fconcepts -o name test2.cpp
> > and got this on a build from yesterday:
> >
> > g++: internal compiler error: Segmentation fault signal terminated program
> > cc1plus
> > Please submit a full bug report,
> > with preprocessed source if appropriate.
> > See <https://gcc.gnu.org/bugs/> for instructions.
> >
> > This code is linked to another version of this
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88395 as it crashes before your
> > warning issue. I posted to
> > the list here about a possible fix yesterday for it:
> >
> > https://gcc.gnu.org/ml/gcc/2019-03/msg00185.html
>
> Could you please explain the connection with this bug? From what I see, what
> you are reporting here is unrelated to the warning issue, and the
> segmentation fault only occurs because of your use of the "-fconcepts" flag.
> Please correct me if I am wrong.
Yes that's correct. However the problem is that it needs to compile and you
would get this:
test.cpp:2:5: error: ‘concept’ does not name a type
2 | concept bool Concept2 = requires (T t, U u)
| ^~~~~~~
test.cpp:2:5: note: ‘concept’ only available with ‘-fconcepts’
test.cpp:8:5: error: ‘concept’ does not name a type
8 | concept bool Concept = Concept2 <T, T>;
| ^~~~~~~
test.cpp:8:5: note: ‘concept’ only available with ‘-fconcepts’
test.cpp:12:19: error: ‘Concept’ has not been declared
12 | template <Concept T>
| ^~~~~~~
test.cpp:13:35: error: ‘T’ was not declared in this scope
13 | constexpr S& operator += (T o);
| ^
test.cpp:13:38: error: declaration of ‘operator+=’ as non-function
13 | constexpr S& operator += (T o);
| ^
test.cpp: In function ‘constexpr S operator*(S, S)’:
test.cpp:17:18: error: no match for ‘operator+=’ (operand types are ‘S’ and
‘S’)
17 | return a += b;
| ~~^~~~
test2.cpp: In member function ‘void S::test(size_t&)’:
test2.cpp:21:21: warning: value computed is not used [-Wunused-value]
21 | #pragma omp atomic capture
| ^~~
Therefore it must be build must and that bug fixed first before we take on this
bug unless you can send me a example without concepts required and just openmp
code.
>From gcc-bugs-return-638323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 05:22:58 2019
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Subject: [Bug ipa/89341] [7/8/9 Regression] ICE in get, at cgraph.h:1332
Date: Mon, 25 Mar 2019 05:22:00 -0000
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JunMa <JunMa at linux dot alibaba.com> changed:
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----------------------------------------------------------------------------
CC| |JunMa at linux dot alibaba.com
--- Comment #10 from JunMa <JunMa at linux dot alibaba.com> ---
I saw same issue with alias attribute. gcc should error out when weakref or
alias attribute attached to a definition. I'll send patch and test cases later.
>From gcc-bugs-return-638324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 05:33:37 2019
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From: "xerofoify at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
Date: Mon, 25 Mar 2019 05:33:00 -0000
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--- Comment #4 from Nicholas Krause <xerofoify at gmail dot com> ---
(In reply to Nicholas Krause from comment #3)
> (In reply to Arsène Pérard-Gayot from comment #2)
> > (In reply to Nicholas Krause from comment #1)
> > > I just compiled this like so:
> > > ./bin/g++ test.cpp -fopenmp -Wall -fconcepts -o name test2.cpp
> > > and got this on a build from yesterday:
> > >
> > > g++: internal compiler error: Segmentation fault signal terminated program
> > > cc1plus
> > > Please submit a full bug report,
> > > with preprocessed source if appropriate.
> > > See <https://gcc.gnu.org/bugs/> for instructions.
> > >
> > > This code is linked to another version of this
> > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88395 as it crashes before your
> > > warning issue. I posted to
> > > the list here about a possible fix yesterday for it:
> > >
> > > https://gcc.gnu.org/ml/gcc/2019-03/msg00185.html
> >
> > Could you please explain the connection with this bug? From what I see, what
> > you are reporting here is unrelated to the warning issue, and the
> > segmentation fault only occurs because of your use of the "-fconcepts" flag.
> > Please correct me if I am wrong.
>
> Yes that's correct. However the problem is that it needs to compile and you
> would get this:
> test.cpp:2:5: error: ‘concept’ does not name a type
> 2 | concept bool Concept2 = requires (T t, U u)
> | ^~~~~~~
> test.cpp:2:5: note: ‘concept’ only available with ‘-fconcepts’
> test.cpp:8:5: error: ‘concept’ does not name a type
> 8 | concept bool Concept = Concept2 <T, T>;
> | ^~~~~~~
> test.cpp:8:5: note: ‘concept’ only available with ‘-fconcepts’
> test.cpp:12:19: error: ‘Concept’ has not been declared
> 12 | template <Concept T>
> | ^~~~~~~
> test.cpp:13:35: error: ‘T’ was not declared in this scope
> 13 | constexpr S& operator += (T o);
> | ^
> test.cpp:13:38: error: declaration of ‘operator+=’ as non-function
> 13 | constexpr S& operator += (T o);
> | ^
> test.cpp: In function ‘constexpr S operator*(S, S)’:
> test.cpp:17:18: error: no match for ‘operator+=’ (operand types are ‘S’ and
> ‘S’)
> 17 | return a += b;
> | ~~^~~~
> test2.cpp: In member function ‘void S::test(size_t&)’:
> test2.cpp:21:21: warning: value computed is not used [-Wunused-value]
> 21 | #pragma omp atomic capture
> | ^~~
> Therefore it must be build must and that bug fixed first before we take on
> this bug unless you can send me a example without concepts required and just
> openmp code.
Sorry I was compiling a incorrect program your code is fine and this is now
confirmed.
>From gcc-bugs-return-638325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 07:21:32 2019
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Subject: [Bug rtl-optimization/85537] [7/8/9 Regression] Invalid memory reference at runtime when calling subroutine through procedure pointer
Date: Mon, 25 Mar 2019 07:21:00 -0000
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Bisecting this leads to
/home/ig25/Gcc/Bisect-bin/./gcc/xgcc -B/home/ig25/Gcc/Bisect-bin/./gcc/ -xc -S
-c /dev/null -fself-test
../../Bisect/gcc/input.c:1154: FAIL: ASSERT_STREQ (exp_filename, LOCATION_FILE
(loc))
cc1: interner Compiler-Fehler: in fail, bei selftest.c:44
0x190e417 selftest::fail(char const*, int, char const*)
../../Bisect/gcc/selftest.c:44
0x191b6d9 assert_loceq
../../Bisect/gcc/input.c:1154
0x191bb1c test_builtins
../../Bisect/gcc/input.c:1213
0x191bc76 selftest::input_c_tests()
../../Bisect/gcc/input.c:1248
0x18b1e5c selftest::run_tests()
../../Bisect/gcc/selftest-run-tests.c:52
0xe8e510 toplev::run_self_tests()
../../Bisect/gcc/toplev.c:2048
Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein;
inclusive vorverarbeitetem Quellcode, wenn es dienlich ist.
at r237159 :-(
Trying
Index: gcc/input.c
===================================================================
--- gcc/input.c (Revision 237159)
+++ gcc/input.c (Arbeitskopie)
@@ -1151,7 +1151,7 @@
assert_loceq (const char *exp_filename, int exp_linenum, int exp_colnum,
location_t loc)
{
- ASSERT_STREQ (exp_filename, LOCATION_FILE (loc));
+ // ASSERT_STREQ (exp_filename, LOCATION_FILE (loc));
ASSERT_EQ (exp_linenum, LOCATION_LINE (loc));
ASSERT_EQ (exp_colnum, LOCATION_COLUMN (loc));
}
to let this continue...
>From gcc-bugs-return-638326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 08:21:13 2019
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Subject: [Bug tree-optimization/89789] [9 Regression] Compile time hog during RPO VN
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-638327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 08:37:13 2019
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Subject: [Bug c/70742] Support div as a builtin
Date: Mon, 25 Mar 2019 08:37:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
We could implement __builtin_ variants with a different ABI, returning the
quotiend and remainder in a (GCC extension) _Complex int type. The library
would then do
#define div(a, b) ({ div_t res; _Complex int r = __builtin_div(a,b); res.quot =
_Real r; res.rem = _Imag r; res; })
that's without an inline function. It's also way nicer to GCC internally,
not requiring memory for the return value - we'd have to lower to this kind
of internal code anyways to make code-generation good.
>From gcc-bugs-return-638328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 08:44:44 2019
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Subject: [Bug target/78263] Compile failure with AltiVec library on PPC64le and -std=c++11 flag
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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> ---
Marking assigned to not defer forever. Other options include to simply
document this behavior as it seems to be a long-standing issue.
>From gcc-bugs-return-638329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 08:56:00 2019
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Subject: [Bug debug/89791] gcc generates wrong debug information at -O3
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Confirmed.
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Subject: [Bug debug/89792] gcc generates wrong debug information at -O3
Date: Mon, 25 Mar 2019 08:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89792
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
Version|unknown |8.3.1
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. All these IV related issues are probably related.
>From gcc-bugs-return-638331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:02:54 2019
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Subject: [Bug c/89798] excessive vector_size silently accepted and truncated
Date: Mon, 25 Mar 2019 09:02:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that in theory we can handle vector sizes up to 1<<(1<<10) given we
store TYPE_VECTOR_SUBPARTS logarithmic and have 10 bits for the exponent...
If we want to limit it we should document the limit if it is not so already.
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Subject: [Bug debug/89801] gcc generates wrong debug information at -O2
Date: Mon, 25 Mar 2019 09:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89801
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Likely related to the other issues eliding an IV/loop.
>From gcc-bugs-return-638333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:09:08 2019
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Subject: [Bug tree-optimization/89802] [9 Regresssion] ICE: verify_gimple failed (error: dead STMT in EH table)
Date: Mon, 25 Mar 2019 09:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-25
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Target Milestone|--- |9.0
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed, mine.
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
Date: Mon, 25 Mar 2019 09:12:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
CC| |ebotcazou at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|wrong code with -O2 |[7/8/9 Regression] wrong
|-fno-dce |code with -O2 -fno-dce
|-fno-forward-propagate |-fno-forward-propagate
|-fno-sched-pressure |-fno-sched-pressure
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r242326, so might be related or even a dup of PR89435.
>From gcc-bugs-return-638334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:12:13 2019
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Subject: [Bug tree-optimization/89804] optimization opportunity: move variable from stack to register
Date: Mon, 25 Mar 2019 09:12:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The decision is currently to limit GIMPLE-level memcpy "inlining" to
power-of-two
(mode-precision) (single) moves and leave the rest to RTL expansion.
>From gcc-bugs-return-638336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:14:55 2019
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reproduced with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
-mtune=generic-armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mabi=aapcs-linux -marm
-march=armv7-a
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Subject: [Bug target/89794] wrong code with -Og -fno-forward-propagate
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2019-03-25
CC| |jakub at gcc dot gnu.org
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ICEs already in r217911, so likely started with the introduction of
__builtin_sub_overflow and before that has been just latent.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
Component|c++ |preprocessor
Version|unknown |8.3.1
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase:
#pragma once
int main() {}
> g++ t.C -S
t.C:1:9: warning: #pragma once in main file
#pragma once
^~~~
you could work around this by wrapping the pragma in a preprocessor
conditional
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Subject: [Bug target/89811] uint32_t load is not recognized if shifts are done in a fixed-size loop
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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> ---
Unrolling happens too late for bswap.
>From gcc-bugs-return-638340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:32:55 2019
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Subject: =?UTF-8?B?W0J1ZyBjLzg5ODEyXSBbOSBSZWdyZXNzaW9uXSBpbmNvcnJlY3QgbWF4aW11?= =?UTF-8?B?bSBpbiBlcnJvcjogcmVxdWVzdGVkIGFsaWdubWVudCDigJg1MzY4NzA5MTI=?= =?UTF-8?B?4oCZIGV4Y2VlZHMgbWF4aW11bSAyMTQ3NDgzNjQ4?Date: Mon, 25 Mar 2019 09:32:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-638341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:36:56 2019
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Subject: [Bug target/89788] trunk/liboffloadmic/runtime/emulator/coi_host.cpp:175]: (error) Null pointer dereference
Date: Mon, 25 Mar 2019 09:36:00 -0000
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--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
Yes, It seems to be a Typo.
The bellowing code also use path.
202 if (closedir (dir) < 0)
203 COIERROR ("Cannot close directory %s.", path);
204 if (rmdir (path) < 0)
205 COIERROR ("Cannot remove directory %s.", path);
206
207 return COI_SUCCESS;
>From gcc-bugs-return-638342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:39:10 2019
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Subject: [Bug c++/89814] New: [9 Regression] ICE (segfault) with -Wduplicated-cond
Date: Mon, 25 Mar 2019 09:39:00 -0000
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Bug ID: 89814
Summary: [9 Regression] ICE (segfault) with -Wduplicated-cond
Product: gcc
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GCC 9.0.1 20190325/x86_64-pc-linux-gnu
now segfaults with "g++ -Wduplicated-cond" - it worked about a week ago.
The real-world fail is in:
gcc-trunk/include/c++/9.0.1/bits/stl_iterator_base_funcs.h: In function
‘constexpr void std::__advance(_RandomAccessIterator&, _Distance,
std::random_access_iterator_tag)’:
gcc-trunk/include/c++/9.0.1/bits/stl_iterator_base_funcs.h:182:54: internal
compiler error: Segmentation fault
Backtrace of the fail below:
0xfadc8f crash_signal
../../gcc/toplev.c:326
0xcabedc operand_equal_p(tree_node const*, tree_node const*, unsigned int)
../../gcc/fold-const.c:2977
0xcac09a operand_equal_p(tree_node const*, tree_node const*, unsigned int)
../../gcc/fold-const.c:2950
0xb1d951 warn_duplicated_cond_add_or_warn(unsigned int, tree_node*,
vec<tree_node*, va_heap, vl_ptr>**)
../../gcc/c-family/c-warn.c:2318
0x9d4b05 cp_parser_selection_statement
../../gcc/cp/parser.c:11809
//----------------------
struct forward_iterator_tag { };
struct random_access_iterator_tag { };
template < typename _RandomAccessIterator,
typename _Distance >
inline constexpr void
__advance (_RandomAccessIterator & __i, _Distance __n,
random_access_iterator_tag)
{
if (__builtin_constant_p (__n) && __n == 1)
++__i;
else if (__builtin_constant_p (__n) && __n == -1)
--__i;
else
__i += __n;
}
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You haven't explained why do you need to use #pragma once in the main cpp
source file, are you sometimes including it as a header and other times
compiling it as the TU itself? Not to mention that it is best not to use
#pragma once at all anywhere.
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Subject: [Bug tree-optimization/89789] [9 Regression] Compile time hog during RPO VN
Date: Mon, 25 Mar 2019 09:57:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so we oscillate for
# vh_5 = PHI <vh_12(3), vh_8(D)(2)>
vh_12 = vh_8(D) ^ vh_5;
where vh_8(D) is undefined. First we get zero (vh_8 ^ vh_8) then we get,
with vh_5 == 0 (UNDEF meet 0) we get vh_8(D) and so on.
The issue is the vh_5 lattice changes UNDEF -> constant -> UNDEF where
we shouldn't go back to UNDEF but to VARYING.
>From gcc-bugs-return-638345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 09:58:03 2019
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Subject: [Bug target/89795] [7/8/9 Regression] wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure
Date: Mon, 25 Mar 2019 09:58:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating then.
>From gcc-bugs-return-638347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 10:05:55 2019
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Subject: [Bug middle-end/89790] [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
Date: Mon, 25 Mar 2019 10:05:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 25 10:05:15 2019
New Revision: 269907
URL: https://gcc.gnu.org/viewcvs?rev=269907&root=gcc&view=rev
Log:
2019-03-25 Richard Biener <rguenther@suse.de>
PR middle-end/89790
* fold-const.c (operand_equal_p): Revert last change with
updated comment.
* g++.dg/pr89790.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/pr89790.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89790] [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89790
Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 10:07:26 2019
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Subject: [Bug c++/89814] [9 Regression] ICE (segfault) with -Wduplicated-cond
Date: Mon, 25 Mar 2019 10:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe dup of PR89790?
>From gcc-bugs-return-638349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 10:19:33 2019
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Subject: [Bug target/89775] [7/8 Regression] S/390: Stackpointer save/restore instructions optimized away
Date: Mon, 25 Mar 2019 10:19:00 -0000
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--- Comment #4 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Mon Mar 25 10:18:57 2019
New Revision: 269910
URL: https://gcc.gnu.org/viewcvs?rev=269910&root=gcc&view=rev
Log:
S/390: Fix PR89775. Stackpointer save/restore instructions removed
Even if a global register is being clobbered in a function we usually
do not save and restore it. However, we still have to do this if it is
a special register. Most of the places in the backend handle this
correctly but not the prologue/epilogue optimization.
gcc/ChangeLog:
2019-03-25 Andreas Krebbel <krebbel@linux.ibm.com>
Backport from mainline
2019-03-20 Andreas Krebbel <krebbel@linux.ibm.com>
PR target/89775
* config/s390/s390.c (global_not_special_regno_p): Move to make it
available to ...
(s390_optimize_register_info): Use global_not_special_regno_p to
check for global regs.
2019-03-25 Andreas Krebbel <krebbel@linux.ibm.com>
Backport from mainline
2019-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/89775
* gcc.target/s390/pr89775-1.c: New test.
* gcc.target/s390/pr89775-2.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/s390/pr89775-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/s390/pr89775-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/s390/s390.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug ada/89493] [9 Regression] Stack smashing on armv7hl
Date: Mon, 25 Mar 2019 10:44:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Does this happen at -O1 too? If not, can you try and disable strict aliasing
or scheduling (or other -O2 optimizations) and see what happens?
>From gcc-bugs-return-638351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 10:59:21 2019
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Subject: [Bug target/88474] Inline built-in hypot for -ffast-math
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Implemented for gcc-9.
>From gcc-bugs-return-638352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:08:12 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
Date: Mon, 25 Mar 2019 11:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
<bb 6> :
# i_5 = PHI <_11(5), 0(8)>
# DEBUG i => i_5
if (i_5 != 6)
goto <bb 5>; [INV]
else
goto <bb 7>; [100.00%]
<bb 5> :
# DEBUG BEGIN_STMT
# DEBUG i => i_5 + 1
So it goes like so the following. First we remove the iterator update in
BB5 (unrelated). Then we remove the control stmt, removing the edge 6 -> 5.
This leaves us with
# i_5 = PHI <0(8)>
# DEBUG i => i_5
then we remove the PHI node which inserts the bogus debug stmt.
Stmt and control-flow removal in DCE is somewhat a twisted maze but the fix
has to be there, avoiding the above situation.
For simple IVs we could compute the final value and insert a debug stmt
after the loop. But for IVs we cannot analyze a similar situation will
arise and thus we have to somehow compute a # DEBUG i => NULL stmt from
the above.
But that means we have to queue edges we want to remove (plus eventually
blocks we can avoid looking at for stmt removal) and perform CFG pruning
only afterwards (like leave it to CFG cleanup by changing conditionals
to if (true/false)). Doing that (just for conditions) gives us the
expected
@@ -24,22 +52,10 @@
if (a.1_3 <= 9)
goto <bb 3>; [INV]
else
- goto <bb 6>; [INV]
-
- <bb 5> :
- # DEBUG BEGIN_STMT
- i_11 = i_5 + 1;
- # DEBUG i => i_11
-
- <bb 6> :
- # i_5 = PHI <i_11(5), 0(4)>
- # DEBUG i => i_5
- if (i_5 != 6)
goto <bb 5>; [INV]
- else
- goto <bb 7>; [INV]
- <bb 7> :
+ <bb 5> :
+ # DEBUG i => NULL
# DEBUG BEGIN_STMT
optimize_me_not ();
return 0;
but that's not because of CFG cleanup but because we do not remove the
edge so at PHI removal time we still have both values.
A non-loopy testcase may also go wrong I guess but it's usually optimized
earlier and not by DCE.
I have a patch.
>From gcc-bugs-return-638353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:12:02 2019
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Subject: [Bug target/89794] wrong code with -Og -fno-forward-propagate
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org,
| |ramana at gcc dot gnu.org,
| |rearnsha at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Guess with PR89475 fix this will be latent, unless one disables ccp.
Anyway, to me this looks like a backend bug. The function is leaf, but for
some strange reason LRA uses the lr register and so lr needs to be pushed and
poped, but that push/pop doesn't seem to be accounted for in the afp to sp
elimination offset computation.
>From gcc-bugs-return-638354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:18:33 2019
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Subject: [Bug target/78263] Compile failure with AltiVec library on PPC64le and -std=c++11 flag
Date: Mon, 25 Mar 2019 11:18:00 -0000
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--- Comment #9 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Right. I am going to fix this early in stage 1 for GCC 10. It slipped off my
radar again in 9, and I don't want to do it late in the release because of
potential fallout.
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Subject: [Bug libstdc++/41861] [DR 887][C++0x] <condition_variable> does not use monotonic_clock
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--- Comment #17 from Mike Crowe <mac at mcrowe dot com> ---
In https://sourceware.org/ml/libc-alpha/2019-02/msg00637.html , I proposed the
addition of the pthread_cond_clockwait function (among others) to glibc, and
whilst there are a few comments on the patches, there's been no fundamental
objections. I'm just working on sorting out some things in the test suite
before these patches can land.
Once this function is available in glibc, it will be relatively straightforward
to support both steady_clock and system_clock correctly in condition_variable.
After many years of me letting this languish, I'm optimistic that we can get
this fixed properly before the tenth anniversay of Aaron's original bug
submission!
However, in the meantime, I wouldn't object to using steady_clock by default.
>From gcc-bugs-return-638357-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:23:36 2019
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Subject: [Bug middle-end/89790] [9 Regression] ICE segfault in operand_equal_p() at fold-const.c:3000 with -Wduplicated-cond since r269838
Date: Mon, 25 Mar 2019 11:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89814 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:23:36 2019
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Subject: [Bug c++/89814] [9 Regression] ICE (segfault) with -Wduplicated-cond
Date: Mon, 25 Mar 2019 11:23:00 -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> ---
dup
*** This bug has been marked as a duplicate of bug 89790 ***
>From gcc-bugs-return-638358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:34:20 2019
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Subject: [Bug c++/60702] thread_local initialization
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the dg-require-alias is the right thing though, this is not related to
native vs. non-native TLS, but:
/* If the variable is internal, or if we can't generate aliases,
call the local init function directly. */
if (!TREE_PUBLIC (var) || !TARGET_SUPPORTS_ALIASES)
return get_local_tls_init_fn (DECL_SOURCE_LOCATION (var));
>From gcc-bugs-return-638359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:36:20 2019
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
Date: Mon, 25 Mar 2019 11:36:00 -0000
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--- Comment #3 from sduguay <s_gcc_bugzilla at binarez dot com> ---
(In reply to Richard Biener from comment #1)
> Testcase:
>
> #pragma once
> int main() {}
>
> > g++ t.C -S
> t.C:1:9: warning: #pragma once in main file
> #pragma once
> ^~~~
>
>
> you could work around this by wrapping the pragma in a preprocessor
> conditional
Hi, thanks for adding a minimal test case. I tried:
#if 1
#pragma once
#endif
but I'm still getting the warning.
>From gcc-bugs-return-638360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:41:38 2019
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Subject: [Bug c++/60702] thread_local initialization
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--- Comment #16 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #15)
> I think the dg-require-alias is the right thing though, this is not related
> to native vs. non-native TLS, but:
> /* If the variable is internal, or if we can't generate aliases,
> call the local init function directly. */
> if (!TREE_PUBLIC (var) || !TARGET_SUPPORTS_ALIASES)
> return get_local_tls_init_fn (DECL_SOURCE_LOCATION (var));
yeah, that's fair enough. Perhaps an additional test can be added when there's
more time (that checks for the __init_tls calls instead of the aliased refs to
it).
>From gcc-bugs-return-638361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 11:42:25 2019
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
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--- Comment #4 from sduguay <s_gcc_bugzilla at binarez dot com> ---
(In reply to Jakub Jelinek from comment #2)
> You haven't explained why do you need to use #pragma once in the main cpp
> source file, are you sometimes including it as a header and other times
> compiling it as the TU itself? Not to mention that it is best not to use
> #pragma once at all anywhere.
Yes, in the system I'm working on, there is no "main file", all C++ (xcpp files
actually) are small C++ programs that I link with a generated main file. xcpp
programs can use other programs (xcpp files) or libs (xhpp files).
This is all working pretty well right now, except for that #pragma once
warning. It's still under pretty heavy development.
You can try it @ https://github.com/binarez/xcpp
Thanks
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
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--- Comment #24 from John David Anglin <danglin at gcc dot gnu.org> ---
Author: danglin
Date: Mon Mar 25 11:48:36 2019
New Revision: 269911
URL: https://gcc.gnu.org/viewcvs?rev=269911&root=gcc&view=rev
Log:
PR libgfortran/79540
* io/write_float.def (build_float_string): Don't copy digits when
ndigits is negative.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/write_float.def
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Subject: [Bug c++/60702] thread_local initialization
Date: Mon, 25 Mar 2019 11:54:00 -0000
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Mar 25 11:53:56 2019
New Revision: 269912
URL: https://gcc.gnu.org/viewcvs?rev=269912&root=gcc&view=rev
Log:
PR c++/60702
* g++.dg/tls/thread_local11.C: Remove scan-tree-dump-times directives
for _ZTH* calls.
* g++.dg/tls/thread_local11a.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/tls/thread_local11a.C
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/tls/thread_local11.C
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Subject: [Bug c++/60702] thread_local initialization
Date: Mon, 25 Mar 2019 11:56:00 -0000
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed on the trunk now.
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Subject: [Bug tree-optimization/89802] [9 Regresssion] ICE: verify_gimple failed (error: dead STMT in EH table)
Date: Mon, 25 Mar 2019 12:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started to ICE with r260348.
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Subject: [Bug tree-optimization/89802] [9 Regresssion] ICE: verify_gimple failed (error: dead STMT in EH table)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89802] [9 Regresssion] ICE: verify_gimple failed (error: dead STMT in EH table)
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 25 12:15:59 2019
New Revision: 269913
URL: https://gcc.gnu.org/viewcvs?rev=269913&root=gcc&view=rev
Log:
2019-03-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/89802
* tree-ssa-math-opts.c (convert_mult_to_fma_1): Properly
move EH data to folded stmt.
* g++.dg/tree-ssa/pr89802.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/pr89802.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-math-opts.c
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Subject: =?UTF-8?B?W0J1ZyBtaWRkbGUtZW5kLzg5Nzc5XSBbOSBSZWdyZXNzaW9uXSAgaW50ZXJu?= =?UTF-8?B?YWwgY29tcGlsZXIgZXJyb3I6IHRyZWUgY2hlY2s6IGV4cGVjdGVkIGNsYXNz?= =?UTF-8?B?IOKAmHR5cGXigJksIGhhdmUg4oCYZXhjZXB0aW9uYWzigJkgKGVycm9yX21h?= =?UTF-8?B?cmspIGluIHRyZWVfbm9wX2NvbnZlcnNpb25fcCwgYXQgdHJlZS5jOjEyNzk4?Date: Mon, 25 Mar 2019 12:19:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 25 12:18:38 2019
New Revision: 269914
URL: https://gcc.gnu.org/viewcvs?rev=269914&root=gcc&view=rev
Log:
2019-03-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/89779
* tree-ssa-loop-ivopts.c (remove_unused_ivs): Return
to remove IV defs, delay actual removal.
(tree_ssa_iv_optimize_loop): Likewise. Avoid SCEV reset.
(tree_ssa_iv_optimize): Remove eliminated IV defs at the
very end, properly also reset loop control IV information.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89815] New: [7/8/9 Regression] wrong code with -Og -march=armv4t -fno-tree-ccp -fno-tree-fre
Date: Mon, 25 Mar 2019 12:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89815
Bug ID: 89815
Summary: [7/8/9 Regression] wrong code with -Og -march=armv4t
-fno-tree-ccp -fno-tree-fre
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: armv7a-hardfloat-linux-gnueabi
Created attachment 46017
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46017&action=edit
reduced testcase
Output:
$ armv7a-hardfloat-linux-gnueabi-gcc -Og -march=armv4t -fno-tree-ccp
-fno-tree-fre testcase.c -static
$ ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
Correct value is 0xff, wrong value is 0xffffffff. The wrong value seems to be
generated by the instruction:
...
@ testcase.c:10: b = __builtin_sub_overflow (0xff, (u8) - d, &f);
mvn r4, #0 @ tmp143,
...
$ armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-269905-checking-yes-rtl-df-extra-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/9.0.1/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --with-float=hard --with-fpu=vfpv4
--with-arch=armv7-a --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=armv7a-hardfloat-linux-gnueabi
--with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-269905-checking-yes-rtl-df-extra-armv7a-hardfloat
Thread model: posix
gcc version 9.0.1 20190325 (experimental) (GCC)
The .ira dump has:
...
(insn 55 24 32 2 (set (reg:QI 145 [143])
(const_int -1 [0xffffffffffffffff])) "testcase.c":10:7 191
{*arm_movqi_insn}
(nil))
...
(insn 58 43 47 2 (set (reg:QI 143)
(reg:QI 145 [143])) "testcase.c":13:1 191 {*arm_movqi_insn}
(expr_list:REG_DEAD (reg:QI 145 [143])
(nil)))
(insn 47 58 48 2 (set (reg/i:SI 0 r0)
(subreg:SI (reg:QI 143) 0)) "testcase.c":13:1 654 {*arm_movsi_vfp}
(expr_list:REG_DEAD (reg:QI 143)
(nil)))
...
And the .reload dump has:
...
(insn 55 24 32 2 (set (reg:QI 4 r4 [143])
(const_int -1 [0xffffffffffffffff])) "testcase.c":10:7 191
{*arm_movqi_insn}
(nil))
...
(insn 58 43 48 2 (set (reg:QI 0 r0 [143])
(reg:QI 4 r4 [143])) "testcase.c":13:1 191 {*arm_movqi_insn}
(nil))
...
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
Date: Mon, 25 Mar 2019 12:37:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to sduguay from comment #3)
> (In reply to Richard Biener from comment #1)
> > Testcase:
> >
> > #pragma once
> > int main() {}
> >
> > > g++ t.C -S
> > t.C:1:9: warning: #pragma once in main file
> > #pragma once
> > ^~~~
> >
> >
> > you could work around this by wrapping the pragma in a preprocessor
> > conditional
>
> Hi, thanks for adding a minimal test case. I tried:
>
> #if 1
> #pragma once
> #endif
>
> but I'm still getting the warning.
I of course meant
#if !defined(THIS_IS_THE_MAIN_FILE)
#pragma once
#endif
and compile the main file with -DTHIS_IS_THE_MAIN_FILE
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Subject: [Bug tree-optimization/89653] Missing vectorization of loop containing std::min/std::max and temporary
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--- Comment #7 from Moritz Kreutzer <moritz.kreutzer at siemens dot com> ---
Thanks for taking this up Richard! I just want to check back: Do you need any
assistance with testing or more information from my side?
>From gcc-bugs-return-638372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:35:58 2019
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
Date: Mon, 25 Mar 2019 13:35:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |easyhack
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
In any case, I agree with confirming this as a bug: all warnings should be
controllable by a -Wxxx option.
Adding such an option is quite easy, and a good first contribution to GCC. For
an example of adding a new option see https://gcc.gnu.org/r192968
>From gcc-bugs-return-638373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:37:08 2019
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Subject: [Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]
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--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Was this question ever answered?
https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01337.html
>From gcc-bugs-return-638374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:38:44 2019
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Subject: [Bug c++/89806] Different behaviour for "pragma diagnostic disabled" between gcc and g++
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes let's close as a dup, and I'll add this example there.
*** This bug has been marked as a duplicate of bug 53431 ***
>From gcc-bugs-return-638375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:38:48 2019
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Subject: [Bug c++/53431] C++ preprocessor ignores #pragma GCC diagnostic
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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CC| |nbkolchin at gmail dot com
--- Comment #36 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89806 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-638376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:39:17 2019
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Subject: [Bug c++/53431] C++ preprocessor ignores #pragma GCC diagnostic
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--- Comment #37 from Jonathan Wakely <redi at gcc dot gnu.org> ---
From PR 89806:
Sample code:
#pragma GCC diagnostic ignored "-Wdate-time"
const char* g_test = "dirty-" __DATE__;
When compiling with g++ (g++ -Werror=date-time) this produces:
<source>:2:31: error: macro "__DATE__" might prevent reproducible builds
[-Werror=date-time]
2 | const char* g_test = "dirty-" __DATE__;
| ^~~~~~~~
cc1plus: some warnings being treated as errors
Compiler returned: 1
But with GCC this compiles without errors (gcc -Werror=date-time).
>From gcc-bugs-return-638377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:41:46 2019
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Subject: [Bug libstdc++/89816] New: [9 Regression] std::variant move construction regressed since GCC 8.3
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Bug ID: 89816
Summary: [9 Regression] std::variant move construction
regressed since GCC 8.3
Product: gcc
Version: 9.0
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Priority: P3
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The following code
#include <variant>
struct my_type{
my_type(my_type&&) noexcept;
};
using V1 = std::variant<int, float, long, double, my_type>;
V1 test1(V1 v ) { return v; }
Was producing a jump table of size 5 on GCC 8.3. GCC 9 produces huge jump
tables with over 30 entries. This leads to 3 times bigger binaries with GCC 9.
https://godbolt.org/z/SUWL5T
>From gcc-bugs-return-638378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:42:23 2019
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Subject: [Bug tree-optimization/89653] Missing vectorization of loop containing std::min/std::max and temporary
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Moritz Kreutzer from comment #7)
> Thanks for taking this up Richard! I just want to check back: Do you need
> any assistance with testing or more information from my side?
Not at this point - this is an enhancement queued for next stage1 and GCC 10
only, so it has to wait at this moment.
>From gcc-bugs-return-638379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:46:30 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target Milestone|--- |9.0
>From gcc-bugs-return-638381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:54:27 2019
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Subject: [Bug tree-optimization/89789] [9 Regression] Compile time hog during RPO VN
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 25 13:53:50 2019
New Revision: 269917
URL: https://gcc.gnu.org/viewcvs?rev=269917&root=gcc&view=rev
Log:
2019-03-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/89789
* tree-ssa-sccvn.c (set_ssa_val_to): Do not allow lattice
changes from non-undefined back to undefined.
* gcc.dg/torture/pr89789.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89789.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
>From gcc-bugs-return-638380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:54:04 2019
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Subject: [Bug tree-optimization/89789] [9 Regression] Compile time hog during RPO VN
Date: Mon, 25 Mar 2019 13:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-638382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 13:54:42 2019
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Subject: [Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]
Date: Mon, 25 Mar 2019 13:54:00 -0000
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--- Comment #16 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
(In reply to Jonathan Wakely from comment #15)
> Was this question ever answered?
> https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01337.html
Oh that's intentional.
This would make this warning more useful, while most people won't use a "char"
to address an array or something like. For example, if someone has wrote a
string-like class but forgot to overload operator+=, this warning will detect
it when he writes "char c = getchar(); buggy_string t = s + c;".
And for something like
"char *p = s; char x; scanf("%hhd", &x); p = p + x;"
1. In C++ __INT8_TYPE__ is not __CHAR_TYPE__ so there will be no warning. He
can use "int8_t x;" instead of "char x;".
2. He can use p = &p[x], which is more clear and nobody will think this is an
append.
I remember I wrote a response, with an option to split this into
-Wstring-plus-int=1 and -Wstring-plus-int=2. But why it wasn't sent? I can't
remember.
>From gcc-bugs-return-638383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:04:15 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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CC| |ville at gcc dot gnu.org
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ville, is this due to implementing it via visit?
>From gcc-bugs-return-638384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:05:12 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Patch posted here: https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01192.html
Some of your bugs might turn out as duplicates if they are fixed by that patch.
>From gcc-bugs-return-638385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:10:15 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
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--- Comment #2 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Yes. That codegen looks.. ..bad.
>From gcc-bugs-return-638386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:15:36 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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--- Comment #3 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
The problem here is that the older approach knows that it's always from type X1
to type X1, never from type X4 to X2. The visitation approach generates
combinations that we never use.
>From gcc-bugs-return-638388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:17:50 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
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--- Comment #9 from Qirun Zhang <qrzhang at gatech dot edu> ---
(In reply to Richard Biener from comment #8)
> Patch posted here: https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01192.html
>
> Some of your bugs might turn out as duplicates if they are fixed by that
> patch.
Thanks, Richard. When will the patch be landed? It helps a lot to reduce
duplicates.
>From gcc-bugs-return-638387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:17:14 2019
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Subject: [Bug c++/89700] Warn if move constructor is not generated and not deleted
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--- Comment #6 from Antony Polukhin <antoshkka at gmail dot com> ---
Another way to workaround the warning is to use something like
`my_class(my_class&) requires false;`. That's too ugly to use.
I'd be fine with closing this issue as a 'won't fix'.
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Subject: [Bug rtl-optimization/89528] Wrong debug info generated at -Og [gcc-trunk]
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
Component|debug |rtl-optimization
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed, this goes wrong on the RTL side somehow.
Breakpoint 2, n () at t.c:13
13 optimize_me_not();
(gdb) disassemble
Dump of assembler code for function n:
0x00000000004005ce <+0>: push %rbx
=> 0x00000000004005cf <+1>: mov $0x0,%eax
0x00000000004005d4 <+6>: callq 0x4005cd <optimize_me_not>
while we expand from
<bb 2> [local count: 1073741824]:
# DEBUG BEGIN_STMT
_1 = j (1);
l_1127_8 = _1 ^ -65536;
# DEBUG l_1127 => l_1127_8
# DEBUG BEGIN_STMT
optimize_me_not ();
not sure how RTL DCE got rid of the call..
>From gcc-bugs-return-638390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:23:54 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So started with r269422 ?
>From gcc-bugs-return-638391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:25:58 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Mon, 25 Mar 2019 14:25:00 -0000
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--- Comment #5 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Correct.
>From gcc-bugs-return-638392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:30:39 2019
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Subject: [Bug debug/89529] Wrong debug info generated at -Og [gcc-trunk]
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Alex - how do we distinguish before/after sequence point here
when breaking on line 7? Is this a consumer issue? As you can see the
actual breakpoint is on the implicit return, but in final the simple-return
pattern is associated with line 8... (but still covered by the line 7
DEBUG BEGIN_STMT it seems).
b ()
{
<bb 2> [local count: 1073741824]:
[t.c:3:5] # DEBUG BEGIN_STMT
[t.c:3:11] # DEBUG l_1862 => 19071
[t.c:4:5] # DEBUG BEGIN_STMT
[t.c:4:7] a = 0;
[t.c:5:5] # DEBUG BEGIN_STMT
[t.c:7:5] # DEBUG BEGIN_STMT
[t.c:7:5] # DEBUG l_1862 => 19070
[t.c:8:1] return;
(gdb) disassemble
Dump of assembler code for function b:
0x00000000004004b2 <+0>: movl $0x0,0x200b78(%rip) # 0x601034
<a>
=> 0x00000000004004bc <+10>: retq
End of assembler dump.
>From gcc-bugs-return-638393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:38:57 2019
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Subject: [Bug debug/89530] Wrong debug informations for C array generated at -Og [gcc-trunk]
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords|wrong-debug |
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, there's not really anything "wrong" I think. It is simply we're eliding
static storage initialization and inspecting memory contents from a debugger
is sensitive to dead code removal.
There doesn't seem to be a way to tell a consumer that storage is
"optimized out" when it is in fact still there. Here at -Og we fail
to elide l_1404 completely but manage to prune the initializer
to only cover the read values at [0][7].
Not sure if DCE which does
--- t.c.036t.dse1 2019-03-25 15:37:19.556994432 +0100
+++ t.c.037t.cddce1 2019-03-25 15:37:19.556994432 +0100
@@ -56,10 +56,6 @@
[t.c:7:5] # DEBUG BEGIN_STMT
[t.c:8:5] # DEBUG BEGIN_STMT
[t.c:8:20] MEM[(short unsigned int[3][9] *)&l_1404 + 8B] = {};
- [t.c:8:20] l_1404[0][0] = 58143;
- [t.c:8:20] l_1404[0][1] = 8;
- [t.c:8:20] l_1404[0][2] = 5;
- [t.c:8:20] l_1404[0][3] = 80;
[t.c:9:5] # DEBUG BEGIN_STMT
[t.c:9:5] goto <bb 9>; [INV]
could somehow "fix" this.
>From gcc-bugs-return-638394-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:39:14 2019
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Subject: [Bug c++/62181] [C/C++] Expected new warning: "adding 'char' to a string does not append to the string" [-Wstring-plus-int]
Date: Mon, 25 Mar 2019 14:39:00 -0000
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--- Comment #17 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Xi Ruoyao from comment #16)
> (In reply to Jonathan Wakely from comment #15)
> > Was this question ever answered?
> > https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01337.html
>
> Oh that's intentional.
>
> This would make this warning more useful, while most people won't use a
> "char" to address an array or something like. For example, if someone has
> wrote a string-like class but forgot to overload operator+=, this warning
> will detect it when he writes "char c = getchar(); buggy_string t = s + c;".
>
> And for something like
>
> "char *p = s; char x; scanf("%hhd", &x); p = p + x;"
>
> 1. In C++ __INT8_TYPE__ is not __CHAR_TYPE__ so there will be no warning.
> He can use "int8_t x;" instead of "char x;".
> 2. He can use p = &p[x], which is more clear and nobody will think this is
> an append.
>
> I remember I wrote a response, with an option to split this into
> -Wstring-plus-int=1 and -Wstring-plus-int=2. But why it wasn't sent? I
> can't remember.
It was in other branches of the thread:
https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01345.html
https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01347.html
Again, as I always do when people propose new numeric levels to warning flags,
I'd prefer splitting into new named options instead of adding numeric warning
levels, for individual controllability, and end-user clarity. So in this case,
maybe the final set could be:
-Wstring-plus-int
-Wstring-plus-char (-Wstring-plus-any-char?)
-Wstring-plus-char-literal
>From gcc-bugs-return-638395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:40:12 2019
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Subject: [Bug c++/53431] C++ preprocessor ignores #pragma GCC diagnostic
Date: Mon, 25 Mar 2019 14:40:00 -0000
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--- Comment #38 from Nickolay Kolchin-Semyonov <nbkolchin at gmail dot com> ---
Since this is a long standing problem, maybe this limitation should be
mentioned in official documentation?
>From gcc-bugs-return-638396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:40:25 2019
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Subject: [Bug debug/89463] debug information for iteractor of an empty loop is gone (at -O3)
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--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 25 Mar 2019, qrzhang at gatech dot edu wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89463
>
> --- Comment #9 from Qirun Zhang <qrzhang at gatech dot edu> ---
> (In reply to Richard Biener from comment #8)
> > Patch posted here: https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01192.html
> >
> > Some of your bugs might turn out as duplicates if they are fixed by that
> > patch.
>
> Thanks, Richard. When will the patch be landed? It helps a lot to reduce
> duplicates.
I'm waiting for testing/ACK.
>From gcc-bugs-return-638397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 14:48:46 2019
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Subject: [Bug debug/89791] gcc generates wrong debug information at -O3
Date: Mon, 25 Mar 2019 14:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89791
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Here we have sth looking like a dup of PR89463 but not fixed by its patch.
With
the patch we end up with
main ()
{
<bb 2> [local count: 1073741824]:
[t.c:2:5] # DEBUG BEGIN_STMT
[t.c:2:9] # DEBUG i => 0
[t.c:3:5] # DEBUG BEGIN_STMT
# DEBUG i => NULL
[t.c:5:5] # DEBUG BEGIN_STMT
[t.c:5:5] optimize_me_not ();
[<built-in>:0:0] return 0;
and in .final:
(note 1 0 3 NOTE_INSN_DELETED)
(note 3 1 20 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
(note 20 3 2 2 NOTE_INSN_PROLOGUE_END)
(note 2 20 27 2 NOTE_INSN_FUNCTION_BEG)
(note 27 2 30 2 t.c:2 NOTE_INSN_BEGIN_STMT)
(note 30 27 28 2 (var_location i (const_int 0 [0])) NOTE_INSN_VAR_LOCATION)
(note 28 30 31 2 t.c:3 NOTE_INSN_BEGIN_STMT)
(note 31 28 29 2 (var_location i (nil)) NOTE_INSN_VAR_LOCATION)
(note 29 31 24 2 t.c:5 NOTE_INSN_BEGIN_STMT)
...
(call_insn:TI 11 24 25 2 (set (reg:SI 0 ax)
(call (mem:QI (symbol_ref:DI ("optimize_me_not") [flags 0x3]
<function_decl 0x7fa85fd3f100 optimize_me_not>) [0 optimize_me_not S1 A8])
(const_int 0 [0]))) "t.c":5:5 677 {*call_value}
which looks good to me. But then we still get
<2><133>: Abbrev Number: 4 (DW_TAG_variable)
<134> DW_AT_name : i
<136> DW_AT_decl_file : 1
<137> DW_AT_decl_line : 2
<138> DW_AT_decl_column : 9
<139> DW_AT_type : <0x165>
<13d> DW_AT_location : 0x2 (location list)
<141> DW_AT_GNU_locviews: 0x0
00000002 v000000000000002 v000000000000003 views at 00000000 for:
00000000004003e0 00000000004003e0 (DW_OP_lit0; DW_OP_stack_value)
so we somehow lost the optimized-out association? Or is my consumer
just not behaving? (gdb 8.2)
>From gcc-bugs-return-638398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 15:30:50 2019
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Subject: [Bug other/89817] New: remove references to type modes from user docs for vector extensions
Date: Mon, 25 Mar 2019 15:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89817
Bug ID: 89817
Summary: remove references to type modes from user docs for
vector extensions
Product: gcc
Version: 9.0
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The existing user documentation for vector extensions (including the type and
variable attributes and not just the Vector Extensions section) is full of
references to type modes. This is an internal GCC implementation detail and
probably only confuses ordinary users. We need to rewrite this documentation
to remove the references and explain the concepts in some other way.
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Mon, 25 Mar 2019 15:34:00 -0000
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--- Comment #6 from Antony Polukhin <antoshkka at gmail dot com> ---
The fix seems pretty trivial: in function `__variant_construct` get the address
of the sorage before entering the `__do_visit` and make it switch only by the
`__rhs`.
Pseudo-code:
template<typename... _Types, typename _Tp, typename _Up>
void __variant_construct(_Tp&& __lhs, _Up&& __rhs)
{
__lhs._M_index = __rhs._M_index;
void* storage = std::addressof(__lhs._M_u);
__do_visit([storage](auto&& __rhs_mem)
-> __detail::__variant::__variant_cookie
{
using _Type = remove_reference_t<decltype(__rhs_mem)>;
::new (storage)
_Type(std::forward<decltype(__rhs_mem)>(__rhs_mem));
return {};
}, __variant_cast<_Types...>(std::forward<decltype(__rhs)>(__rhs)));
}
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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--- Comment #7 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Looks good - I'll do a patch shortly.
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Subject: [Bug c++/89705] [7/8/9 Regression] ICE in convert_like_real, at cp/call.c:7334
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Mar 25 16:10:06 2019
New Revision: 269918
URL: https://gcc.gnu.org/viewcvs?rev=269918&root=gcc&view=rev
Log:
PR c++/89705 - ICE with reference binding with conversion function.
* call.c (reference_binding): If the result of the conversion function
is a prvalue of non-class type, use the cv-unqualified type.
* g++.dg/cpp0x/rv-conv2.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/rv-conv2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-25
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46018
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46018&action=edit
gcc9-pr89796.patch
Untested fix.
You could have used simpler
#pragma omp atomic capture
prev = c++;
that wouldn't warn (so, if you want a workaround, use that).
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Subject: [Bug c++/89705] [7/8 Regression] ICE in convert_like_real, at cp/call.c:7334
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|convert_like_real, at |convert_like_real, at
|cp/call.c:7334 |cp/call.c:7334
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
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--- Comment #8 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01200.html
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-03-25
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Ever confirmed|0 |1
>From gcc-bugs-return-638406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 16:39:26 2019
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Mon, 25 Mar 2019 16:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89214
--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Mar 25 16:38:48 2019
New Revision: 269919
URL: https://gcc.gnu.org/viewcvs?rev=269919&root=gcc&view=rev
Log:
PR c++/89214 - ICE when initializing aggregates with bases.
* typeck2.c (digest_init_r): Warn about object slicing instead of
crashing.
* g++.dg/cpp1z/aggr-base8.C: New test.
* g++.dg/cpp1z/aggr-base9.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/aggr-base8.C
trunk/gcc/testsuite/g++.dg/cpp1z/aggr-base9.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-638407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 16:44:52 2019
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Subject: [Bug c++/89214] [7/8 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Mon, 25 Mar 2019 16:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89214
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|digest_init_r, at |digest_init_r, at
|cp/typeck2.c:1211 with |cp/typeck2.c:1211 with
|-std=c++17 |-std=c++17
--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638408-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 16:53:06 2019
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From: "tromey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89818] New: possibly invalid name mangling
Date: Mon, 25 Mar 2019 16:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89818
Bug ID: 89818
Summary: possibly invalid name mangling
Product: gcc
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Apologies for the vagueness of this bug. I ran across a
pull request that mentions that gcc will sometimes emit an erroneous
'sr' mangling:
https://github.com/gimli-rs/cpp_demangle/pull/173
In particular that bug claims that gcc can emit this
symbol, which it further claims is invalid:
_ZN4base8internal14CheckedSubImplIlEENSt9enable_ifIXsrSt14numeric_limitsIT_E10is_integerEbE4typeES4_S4_PS4_
I don't know whether these claims are accurate, but I figured
it would be worth filing, just in case.
>From gcc-bugs-return-638409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 16:57:00 2019
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Subject: [Bug c++/89818] possibly invalid name mangling
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
related to PR 88413 and PR 67343
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Subject: [Bug c++/88413] g++ mangles names involving unresolved names in function argument template parameters differently from the ABI standard.
Date: Mon, 25 Mar 2019 16:57:00 -0000
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--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
related to PR 67343.
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Subject: [Bug c++/89818] possibly invalid name mangling
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
And related to the upstream ABI issue:
https://github.com/itanium-cxx-abi/cxx-abi/issues/38 .
>From gcc-bugs-return-638412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 16:58:51 2019
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Subject: [Bug c++/67343] C++ mangler does not follow ABI for local names in expressions
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ABI, wrong-code
See Also| |https://github.com/itanium-
| |cxx-abi/cxx-abi/issues/38
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to the upstream ABI issue:
https://github.com/itanium-cxx-abi/cxx-abi/issues/38
related to PR 88413 and PR 89818 .
>From gcc-bugs-return-638413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:15:45 2019
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From: "perard at cg dot uni-saarland.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89796] Incorrect warning generated with OpenMP atomic capture
Date: Mon, 25 Mar 2019 17:15:00 -0000
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--- Comment #6 from Arsène Pérard-Gayot <perard at cg dot uni-saarland.de> ---
(In reply to Jakub Jelinek from comment #5)
> Created attachment 46018 [details]
> gcc9-pr89796.patch
>
> Untested fix.
>
> You could have used simpler
> #pragma omp atomic capture
> prev = c++;
> that wouldn't warn (so, if you want a workaround, use that).
Thank you for the workaround. Sadly, I cannot apply it to my problem, because
in my original code, the increment is not one. I need to do something like:
#pragma omp atomic capture
{ prev = counter; counter += K; }
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Subject: [Bug libstdc++/89819] New: [9 Regression] std::variant operators regressed since GCC 8.3
Date: Mon, 25 Mar 2019 17:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89819
Bug ID: 89819
Summary: [9 Regression] std::variant operators regressed since
GCC 8.3
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: antoshkka at gmail dot com
Target Milestone: ---
The following code
#include <variant>
struct my_type{};
bool operator==(const my_type&, const my_type&) noexcept;
using V1 = std::variant<int, float, long, double, my_type>;
auto test1(const V1& v) { return v == v; }
Was producing a jump table of size 5 on GCC 8.3. GCC 9 produces huge jump
tables with over 30 entries. This leads to ~15 times bigger binaries with GCC 9
and ~25% compilation slowdown. https://godbolt.org/z/yoAIrP
This could be fixed by changing the `_VARIANT_RELATION_FUNCTION_TEMPLATE` from
binary visitation to unary via first checking the `index()` of `__lhs` +
`__rhs` and doing the visitation only if they match (hold the same type).
Pseudo-code:
#define _VARIANT_RELATION_FUNCTION_TEMPLATE(__OP, __NAME) \
template<typename... _Types> \
constexpr bool operator __OP(const variant<_Types...>& __lhs, \
const variant<_Types...>& __rhs) \
{ \
bool __ret = true; \
if ((__lhs.index() + 1) != (__rhs.index() + 1)) { \
return (__lhs.index() + 1) __OP (__rhs.index() + 1); \
} \
__do_visit([&__ret, &__lhs] \
(auto&& __rhs_mem) mutable \
-> __detail::__variant::__variant_cookie \
{ \
using __Type = remove_reference_t<decltype(__rhs_mem)>; \
if constexpr (!is_same_v< \
__Type, \
__detail::__variant::__variant_cookie>) \
__ret =
__detail::__variant::__get<__detail::__variant::__index_of_v<__Type,
_Types...>>(__this_mem) __OP __rhs_mem; \
return {}; \
}, __rhs); \
return __ret; \
} \
\
constexpr bool operator __OP(monostate, monostate) noexcept \
{ return 0 __OP 0; }
>From gcc-bugs-return-638415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:32:24 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Mon, 25 Mar 2019 17:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89816
--- Comment #9 from Antony Polukhin <antoshkka at gmail dot com> ---
BTW, I think there are some other cases where binary visitation could be
simplified to unary (significantly reducing the code size and improving the
compile times). I've filled Bug 89819, but looks like assignment and swap could
be also optimized.
>From gcc-bugs-return-638416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:36:52 2019
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Subject: [Bug rtl-optimization/89815] [7/8/9 Regression] wrong code with -Og -march=armv4t -fno-tree-ccp -fno-tree-fre
Date: Mon, 25 Mar 2019 17:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-03-25
CC| |ebotcazou at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Also regressed with r242326.
>From gcc-bugs-return-638417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:39:13 2019
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Subject: [Bug libstdc++/89819] [9 Regression] std::variant operators regressed since GCC 8.3
Date: Mon, 25 Mar 2019 17:39:00 -0000
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ville.voutilainen at gmail dot com
--- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
The problem with this idea is that it brings back a run-time branch that the
visitation got rid of. What we probably need is a different generated table for
these functions, a table that uses the same index for both variants or invokes
a cookie-function.
>From gcc-bugs-return-638418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:41:46 2019
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Subject: [Bug libstdc++/89816] [9 Regression] std::variant move construction regressed since GCC 8.3
Date: Mon, 25 Mar 2019 17:41:00 -0000
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--- Comment #10 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Assignment can be made to avoid double-visitation, instead of using
_M_destructive_move/copy. Other than that, getting it to generate fewer table
items needs the idea from the other bug report.
>From gcc-bugs-return-638419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:42:15 2019
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Subject: [Bug other/89817] remove references to type modes from user docs for vector extensions
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
confirmed
>From gcc-bugs-return-638420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 17:54:05 2019
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Subject: [Bug c++/89767] [8 Regression] ICE with tuple and optimization
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE with |[8 Regression] ICE with
|tuple and optimization |tuple and optimization
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-638421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 18:24:50 2019
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Subject: [Bug preprocessor/89808] An option to disable warning "#pragma once in main file"
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
Blocks| |44209
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #6)
> In any case, I agree with confirming this as a bug: all warnings should be
> controllable by a -Wxxx option.
This is bug 44209
>
> Adding such an option is quite easy, and a good first contribution to GCC.
> For an example of adding a new option see https://gcc.gnu.org/r192968
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44209
[Bug 44209] [meta-bug] Some warnings are not linked to diagnostics options
>From gcc-bugs-return-638422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 18:27:45 2019
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Subject: [Bug c++/87748] [8/9 Regression] G++-8 treats SFINAE as error
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87748
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Mar 25 18:27:08 2019
New Revision: 269921
URL: https://gcc.gnu.org/viewcvs?rev=269921&root=gcc&view=rev
Log:
PR c++/87748 - substitution failure error with decltype.
This issue is similar to PR 87480; in both cases we were doing non-dependent
substitution with processing_template_decl set, leading to member access
expressions seeming still instantiation-dependent, and therefore decltype
not being simplified to its actual type. And as in that PR, the fix is to
clear processing_template_decl while substituting a default template
argument.
* pt.c (most_specialized_partial_spec): Clear
processing_template_decl.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/sfinae64.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87480] [8/9 Regression] SFINAE constructor not matched, only in templated function
Date: Mon, 25 Mar 2019 18:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87480
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Mar 25 18:27:08 2019
New Revision: 269921
URL: https://gcc.gnu.org/viewcvs?rev=269921&root=gcc&view=rev
Log:
PR c++/87748 - substitution failure error with decltype.
This issue is similar to PR 87480; in both cases we were doing non-dependent
substitution with processing_template_decl set, leading to member access
expressions seeming still instantiation-dependent, and therefore decltype
not being simplified to its actual type. And as in that PR, the fix is to
clear processing_template_decl while substituting a default template
argument.
* pt.c (most_specialized_partial_spec): Clear
processing_template_decl.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/sfinae64.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
>From gcc-bugs-return-638425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 18:28:40 2019
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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++/87480] [8 Regression] SFINAE constructor not matched, only in templated function
Date: Mon, 25 Mar 2019 18:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87480
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] SFINAE |[8 Regression] SFINAE
|constructor not matched, |constructor not matched,
|only in templated function |only in templated function
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638424-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 18:28:04 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/87748] [8 Regression] G++-8 treats SFINAE as error
Date: Mon, 25 Mar 2019 18:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87748
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] G++-8 |[8 Regression] G++-8 treats
|treats SFINAE as error |SFINAE as error
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638426-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 18:30:07 2019
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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++/86521] [8 Regression] GCC 8 selects incorrect overload of ref-qualified conversion operator template
Date: Mon, 25 Mar 2019 18:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] GCC 8 |[8 Regression] GCC 8
|selects incorrect overload |selects incorrect overload
|of ref-qualified conversion |of ref-qualified conversion
|operator template |operator template
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-638427-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Mar 25 19:10:35 2019
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From: "Maria Lena" <maria.lena@primeventleads.com>
To: <gcc-bugs@gcc.gnu.org>
Subject: North Carolina Statewide Safety Conference- 2019
Date: Mon, 25 Mar 2019 19:10:00 -0000
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Hi,
Would you be interested in acquiring a list of "Attendees List of North
Carolina Statewide Safety Conference- 2019?"
Please let me know your interest to send you the number of Attendees and
cost.
Awaiting for your reply.
Regards,
Maria Lena/Marketing Coordinator.
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (3 preceding siblings ...)
2019-03-18 23:49 ` [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds msebor at gcc dot gnu.org
@ 2020-04-13 20:27 ` msebor at gcc dot gnu.org
2020-04-18 18:22 ` law at redhat dot com
` (72 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-04-13 20:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 81172, which changed state.
Bug 81172 Summary: Expected new warning option -Warray-bounds-pointer-arithmetic
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81172
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (4 preceding siblings ...)
2020-04-13 20:27 ` msebor at gcc dot gnu.org
@ 2020-04-18 18:22 ` law at redhat dot com
2020-04-21 17:15 ` msebor at gcc dot gnu.org
` (71 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: law at redhat dot com @ 2020-04-18 18:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 89550, which changed state.
Bug 89550 Summary: [8/9/10 Regression] Spurious array-bounds warning when using __PRETTY_FUNCTION__ as a string_view
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89550
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (5 preceding siblings ...)
2020-04-18 18:22 ` law at redhat dot com
@ 2020-04-21 17:15 ` msebor at gcc dot gnu.org
2020-05-18 22:06 ` msebor at gcc dot gnu.org
` (70 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-04-21 17:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 94647, which changed state.
Bug 94647 Summary: [10 Regression] bogus -Warray-bounds on strncpy into a larger member array from a smaller array
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94647
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (6 preceding siblings ...)
2020-04-21 17:15 ` msebor at gcc dot gnu.org
@ 2020-05-18 22:06 ` msebor at gcc dot gnu.org
2020-05-19 21:07 ` msebor at gcc dot gnu.org
` (69 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-05-18 22:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 94940, which changed state.
Bug 94940 Summary: [10 Regression] spurious -Warray-bounds for a zero length array member of union since r10-4300-g49fb45c81f4ac068
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94940
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (7 preceding siblings ...)
2020-05-18 22:06 ` msebor at gcc dot gnu.org
@ 2020-05-19 21:07 ` msebor at gcc dot gnu.org
2020-06-01 17:14 ` msebor at gcc dot gnu.org
` (68 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-05-19 21:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 53890, which changed state.
Bug 53890 Summary: bogus array bounds warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53890
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (8 preceding siblings ...)
2020-05-19 21:07 ` msebor at gcc dot gnu.org
@ 2020-06-01 17:14 ` msebor at gcc dot gnu.org
2020-06-10 17:41 ` msebor at gcc dot gnu.org
` (67 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-06-01 17:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 95461, which changed state.
Bug 95461 Summary: GCC misses -Warray-bounds warning message
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95461
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (9 preceding siblings ...)
2020-06-01 17:14 ` msebor at gcc dot gnu.org
@ 2020-06-10 17:41 ` msebor at gcc dot gnu.org
2020-07-21 20:08 ` msebor at gcc dot gnu.org
` (66 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-06-10 17:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 88992, which changed state.
Bug 88992 Summary: missing -Warray-bounds indexing into a zero-length array
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88992
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (10 preceding siblings ...)
2020-06-10 17:41 ` msebor at gcc dot gnu.org
@ 2020-07-21 20:08 ` msebor at gcc dot gnu.org
2020-07-21 21:31 ` msebor at gcc dot gnu.org
` (65 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-07-21 20:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 95988, which changed state.
Bug 95988 Summary: [10/11 Regression] Bogus -Warray-bounds/-Wstringop-overflow warning with loop
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95988
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (11 preceding siblings ...)
2020-07-21 20:08 ` msebor at gcc dot gnu.org
@ 2020-07-21 21:31 ` msebor at gcc dot gnu.org
2020-07-27 20:09 ` msebor at gcc dot gnu.org
` (64 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-07-21 21:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 84051, which changed state.
Bug 84051 Summary: [7/8/9 Regression] missing -Warray-bounds on an out-of-bounds access via an array pointer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84051
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |ASSIGNED
Resolution|WONTFIX |---
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (12 preceding siblings ...)
2020-07-21 21:31 ` msebor at gcc dot gnu.org
@ 2020-07-27 20:09 ` msebor at gcc dot gnu.org
2020-08-20 17:14 ` msebor at gcc dot gnu.org
` (63 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-07-27 20:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 84079, which changed state.
Bug 84079 Summary: missing -Warray-bounds taking the address of a multidimensional array element
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84079
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (13 preceding siblings ...)
2020-07-27 20:09 ` msebor at gcc dot gnu.org
@ 2020-08-20 17:14 ` msebor at gcc dot gnu.org
2020-08-20 17:27 ` msebor at gcc dot gnu.org
` (62 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-08-20 17:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 92828, which changed state.
Bug 92828 Summary: array out of bounds access in libcpp/mkdeps.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92828
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (14 preceding siblings ...)
2020-08-20 17:14 ` msebor at gcc dot gnu.org
@ 2020-08-20 17:27 ` msebor at gcc dot gnu.org
2020-09-20 0:09 ` msebor at gcc dot gnu.org
` (61 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-08-20 17:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 90367, which changed state.
Bug 90367 Summary: Spurious warning array subscript is above array bounds
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90367
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (15 preceding siblings ...)
2020-08-20 17:27 ` msebor at gcc dot gnu.org
@ 2020-09-20 0:09 ` msebor at gcc dot gnu.org
2020-09-27 20:25 ` msebor at gcc dot gnu.org
` (60 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-09-20 0:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 84051, which changed state.
Bug 84051 Summary: [7/8/9 Regression] missing -Warray-bounds on an out-of-bounds access via an array pointer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84051
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (16 preceding siblings ...)
2020-09-20 0:09 ` msebor at gcc dot gnu.org
@ 2020-09-27 20:25 ` msebor at gcc dot gnu.org
2020-10-14 21:38 ` msebor at gcc dot gnu.org
` (59 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-09-27 20:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 94195, which changed state.
Bug 94195 Summary: missing warning reading a smaller object via an lvalue of a larger type
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94195
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (17 preceding siblings ...)
2020-09-27 20:25 ` msebor at gcc dot gnu.org
@ 2020-10-14 21:38 ` msebor at gcc dot gnu.org
2020-11-29 22:35 ` msebor at gcc dot gnu.org
` (58 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-10-14 21:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 97391, which changed state.
Bug 97391 Summary: [11 Regression] bogus -Warray-bounds accessing a multidimensional array parameter
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97391
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (18 preceding siblings ...)
2020-10-14 21:38 ` msebor at gcc dot gnu.org
@ 2020-11-29 22:35 ` msebor at gcc dot gnu.org
2021-01-04 16:06 ` msebor at gcc dot gnu.org
` (57 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2020-11-29 22:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 92936, which changed state.
Bug 92936 Summary: missing warning on a past-the-end store to a PHI
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92936
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (19 preceding siblings ...)
2020-11-29 22:35 ` msebor at gcc dot gnu.org
@ 2021-01-04 16:06 ` msebor at gcc dot gnu.org
2021-01-04 16:20 ` w at 1wt dot eu
` (56 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-01-04 16:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98503, which changed state.
Bug 98503 Summary: [11 regression] -Warray-bounds false positive with global variables at -O2 since r11-3306-g3f9a497d1b0dd9da
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98503
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (20 preceding siblings ...)
2021-01-04 16:06 ` msebor at gcc dot gnu.org
@ 2021-01-04 16:20 ` w at 1wt dot eu
2021-01-04 17:41 ` msebor at gcc dot gnu.org
` (55 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: w at 1wt dot eu @ 2021-01-04 16:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98503, which changed state.
Bug 98503 Summary: [11 regression] -Warray-bounds false positive with global variables at -O2 since r11-3306-g3f9a497d1b0dd9da
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98503
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (21 preceding siblings ...)
2021-01-04 16:20 ` w at 1wt dot eu
@ 2021-01-04 17:41 ` msebor at gcc dot gnu.org
2021-01-04 22:43 ` w at 1wt dot eu
` (54 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-01-04 17:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98503, which changed state.
Bug 98503 Summary: [11 regression] -Warray-bounds false positive with global variables at -O2 since r11-3306-g3f9a497d1b0dd9da
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98503
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (22 preceding siblings ...)
2021-01-04 17:41 ` msebor at gcc dot gnu.org
@ 2021-01-04 22:43 ` w at 1wt dot eu
2021-01-06 11:15 ` ebotcazou at gcc dot gnu.org
` (53 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: w at 1wt dot eu @ 2021-01-04 22:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98503, which changed state.
Bug 98503 Summary: [11 regression] -Warray-bounds false positive with global variables at -O2 since r11-3306-g3f9a497d1b0dd9da
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98503
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (23 preceding siblings ...)
2021-01-04 22:43 ` w at 1wt dot eu
@ 2021-01-06 11:15 ` ebotcazou at gcc dot gnu.org
2021-01-14 20:11 ` msebor at gcc dot gnu.org
` (52 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2021-01-06 11:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 90806, which changed state.
Bug 90806 Summary: Warray-bounds-2.c fail on cross-aarch64 on RH6 host
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90806
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (24 preceding siblings ...)
2021-01-06 11:15 ` ebotcazou at gcc dot gnu.org
@ 2021-01-14 20:11 ` msebor at gcc dot gnu.org
2021-02-10 21:36 ` msebor at gcc dot gnu.org
` (51 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-01-14 20:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 96984, which changed state.
Bug 96984 Summary: bogus -Warray-bounds with -fsanitize due to FRE substituting subobjects at the same address
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96984
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (25 preceding siblings ...)
2021-01-14 20:11 ` msebor at gcc dot gnu.org
@ 2021-02-10 21:36 ` msebor at gcc dot gnu.org
2021-03-08 20:39 ` msebor at gcc dot gnu.org
` (50 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-02-10 21:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 92879, which changed state.
Bug 92879 Summary: [10/11 Regression] incorrect warning of __builtin_memset offset is out of the bounds on zero-size allocation and initialization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92879
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (26 preceding siblings ...)
2021-02-10 21:36 ` msebor at gcc dot gnu.org
@ 2021-03-08 20:39 ` msebor at gcc dot gnu.org
2021-05-05 19:31 ` msebor at gcc dot gnu.org
` (49 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-03-08 20:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98266, which changed state.
Bug 98266 Summary: [11 Regression] bogus array subscript is partly outside array bounds on virtual inheritance
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98266
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (27 preceding siblings ...)
2021-03-08 20:39 ` msebor at gcc dot gnu.org
@ 2021-05-05 19:31 ` msebor at gcc dot gnu.org
2021-05-14 11:16 ` jakub at gcc dot gnu.org
` (48 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-05-05 19:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 100430, which changed state.
Bug 100430 Summary: False positive for -Warray-bounds and pointers
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100430
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WONTFIX
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (28 preceding siblings ...)
2021-05-05 19:31 ` msebor at gcc dot gnu.org
@ 2021-05-14 11:16 ` jakub at gcc dot gnu.org
2021-05-14 11:38 ` jakub at gcc dot gnu.org
` (47 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-05-14 11:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 88800, which changed state.
Bug 88800 Summary: [8 Regression] Spurious -Werror=array-bounds for non-taken branch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88800
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (29 preceding siblings ...)
2021-05-14 11:16 ` jakub at gcc dot gnu.org
@ 2021-05-14 11:38 ` jakub at gcc dot gnu.org
2021-07-06 21:32 ` msebor at gcc dot gnu.org
` (46 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-05-14 11:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 89644, which changed state.
Bug 89644 Summary: [8 Regression] false-positive -Warray-bounds on strncpy with unterminated array
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89644
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (30 preceding siblings ...)
2021-05-14 11:38 ` jakub at gcc dot gnu.org
@ 2021-07-06 21:32 ` msebor at gcc dot gnu.org
2021-07-08 22:12 ` msebor at gcc dot gnu.org
` (45 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-07-06 21:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 86650, which changed state.
Bug 86650 Summary: -Warray-bounds missing inlining context
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86650
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (31 preceding siblings ...)
2021-07-06 21:32 ` msebor at gcc dot gnu.org
@ 2021-07-08 22:12 ` msebor at gcc dot gnu.org
2021-07-08 22:42 ` msebor at gcc dot gnu.org
` (44 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-07-08 22:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 100451, which changed state.
Bug 100451 Summary: g++.dg/warn/Warray-bounds-20.C XPASSes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100451
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (32 preceding siblings ...)
2021-07-08 22:12 ` msebor at gcc dot gnu.org
@ 2021-07-08 22:42 ` msebor at gcc dot gnu.org
2021-07-13 17:02 ` msebor at gcc dot gnu.org
` (43 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-07-08 22:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 101372, which changed state.
Bug 101372 Summary: [12 Regression] -Warray-bounds in gcc/cp/module.cc causing bootstrap failure
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101372
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (33 preceding siblings ...)
2021-07-08 22:42 ` msebor at gcc dot gnu.org
@ 2021-07-13 17:02 ` msebor at gcc dot gnu.org
2021-07-20 14:38 ` msebor at gcc dot gnu.org
` (42 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-07-13 17:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 101436, which changed state.
Bug 101436 Summary: Yet another bogus "array subscript is partly outside array bounds"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101436
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (34 preceding siblings ...)
2021-07-13 17:02 ` msebor at gcc dot gnu.org
@ 2021-07-20 14:38 ` msebor at gcc dot gnu.org
2021-08-24 16:50 ` msebor at gcc dot gnu.org
` (41 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-07-20 14:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 93437, which changed state.
Bug 93437 Summary: [9 Regression] bogus -Warray-bounds on protobuf generated code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93437
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (35 preceding siblings ...)
2021-07-20 14:38 ` msebor at gcc dot gnu.org
@ 2021-08-24 16:50 ` msebor at gcc dot gnu.org
2021-08-24 16:50 ` msebor at gcc dot gnu.org
` (40 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-08-24 16:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 101600, which changed state.
Bug 101600 Summary: [12 Regression] Spurious -Warray-bounds downcasting a polymorphic pointer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101600
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (36 preceding siblings ...)
2021-08-24 16:50 ` msebor at gcc dot gnu.org
@ 2021-08-24 16:50 ` msebor at gcc dot gnu.org
2021-09-01 15:02 ` msebor at gcc dot gnu.org
` (39 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-08-24 16:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 101977, which changed state.
Bug 101977 Summary: [12 Regression] array subscript 0 is outside array bounds
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101977
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (37 preceding siblings ...)
2021-08-24 16:50 ` msebor at gcc dot gnu.org
@ 2021-09-01 15:02 ` msebor at gcc dot gnu.org
2021-09-15 20:16 ` msebor at gcc dot gnu.org
` (38 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-09-01 15:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102151, which changed state.
Bug 102151 Summary: Spurious warning by -Warray-bounds when allocating with flexible array member
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102151
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (38 preceding siblings ...)
2021-09-01 15:02 ` msebor at gcc dot gnu.org
@ 2021-09-15 20:16 ` msebor at gcc dot gnu.org
2021-10-13 17:09 ` msebor at gcc dot gnu.org
` (37 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-09-15 20:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102346, which changed state.
Bug 102346 Summary: Missing -Warray-bounds due to constant folding
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102346
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (39 preceding siblings ...)
2021-09-15 20:16 ` msebor at gcc dot gnu.org
@ 2021-10-13 17:09 ` msebor at gcc dot gnu.org
2021-10-26 23:02 ` msebor at gcc dot gnu.org
` (36 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-10-13 17:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102630, which changed state.
Bug 102630 Summary: [12 Regression] Spurious -Warray-bounds with named address space
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102630
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (40 preceding siblings ...)
2021-10-13 17:09 ` msebor at gcc dot gnu.org
@ 2021-10-26 23:02 ` msebor at gcc dot gnu.org
2021-11-23 10:01 ` pinskia at gcc dot gnu.org
` (35 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-10-26 23:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102453, which changed state.
Bug 102453 Summary: buffer overflow by atomic built-ins not diagnosed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102453
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (41 preceding siblings ...)
2021-10-26 23:02 ` msebor at gcc dot gnu.org
@ 2021-11-23 10:01 ` pinskia at gcc dot gnu.org
2021-12-09 19:59 ` msebor at gcc dot gnu.org
` (34 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-11-23 10:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102216, which changed state.
Bug 102216 Summary: [12 Regression] missed optimization causing Warray-bounds
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102216
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (42 preceding siblings ...)
2021-11-23 10:01 ` pinskia at gcc dot gnu.org
@ 2021-12-09 19:59 ` msebor at gcc dot gnu.org
2021-12-15 16:23 ` msebor at gcc dot gnu.org
` (33 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-12-09 19:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 103215, which changed state.
Bug 103215 Summary: [12 regression] gcc generates unexpected warnings on libx11-1.7.2: error: array subscript -2 is outside array bounds of since r12-3124-g820f0940d7ace130
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103215
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (43 preceding siblings ...)
2021-12-09 19:59 ` msebor at gcc dot gnu.org
@ 2021-12-15 16:23 ` msebor at gcc dot gnu.org
2021-12-15 17:27 ` msebor at gcc dot gnu.org
` (32 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-12-15 16:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 91457, which changed state.
Bug 91457 Summary: FAIL: g++.dg/warn/Warray-bounds-4.C -std=gnu++98 (test for warnings, line 25)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91457
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (44 preceding siblings ...)
2021-12-15 16:23 ` msebor at gcc dot gnu.org
@ 2021-12-15 17:27 ` msebor at gcc dot gnu.org
2022-01-19 8:55 ` rguenth at gcc dot gnu.org
` (31 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2021-12-15 17:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 85651, which changed state.
Bug 85651 Summary: Invalid -Warray-bounds warning with -O3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85651
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (45 preceding siblings ...)
2021-12-15 17:27 ` msebor at gcc dot gnu.org
@ 2022-01-19 8:55 ` rguenth at gcc dot gnu.org
2022-01-26 17:52 ` msebor at gcc dot gnu.org
` (30 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-01-19 8:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102706, which changed state.
Bug 102706 Summary: [12 regression] -O2 vectorization causes regression in Warray-bounds-48.c on many targets
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102706
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (46 preceding siblings ...)
2022-01-19 8:55 ` rguenth at gcc dot gnu.org
@ 2022-01-26 17:52 ` msebor at gcc dot gnu.org
2022-02-01 12:54 ` marxin at gcc dot gnu.org
` (29 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2022-01-26 17:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 91462, which changed state.
Bug 91462 Summary: [9 Regression] missing -Warray-bounds writing to an empty flexible array member in a ctor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91462
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (47 preceding siblings ...)
2022-01-26 17:52 ` msebor at gcc dot gnu.org
@ 2022-02-01 12:54 ` marxin at gcc dot gnu.org
2022-02-16 17:25 ` msebor at gcc dot gnu.org
` (28 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-02-01 12:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 86341, which changed state.
Bug 86341 Summary: Aggressive loop unrolling in gcc 7.x produces out-of-bounds index
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86341
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (48 preceding siblings ...)
2022-02-01 12:54 ` marxin at gcc dot gnu.org
@ 2022-02-16 17:25 ` msebor at gcc dot gnu.org
2022-03-17 20:02 ` msebor at gcc dot gnu.org
` (27 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2022-02-16 17:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 102006, which changed state.
Bug 102006 Summary: A false warning "Array subscript -N is outside array bounds warning"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102006
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (49 preceding siblings ...)
2022-02-16 17:25 ` msebor at gcc dot gnu.org
@ 2022-03-17 20:02 ` msebor at gcc dot gnu.org
2022-03-23 8:31 ` rguenth at gcc dot gnu.org
` (26 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2022-03-17 20:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 90752, which changed state.
Bug 90752 Summary: missing -Warray-bounds accessing the result of string functions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90752
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (50 preceding siblings ...)
2022-03-17 20:02 ` msebor at gcc dot gnu.org
@ 2022-03-23 8:31 ` rguenth at gcc dot gnu.org
2022-03-30 8:16 ` jakub at gcc dot gnu.org
` (25 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-03-23 8:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 98503, which changed state.
Bug 98503 Summary: [11/12 regression] -Warray-bounds false positive with global variables at -O2 since r11-3306-g3f9a497d1b0dd9da
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98503
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (51 preceding siblings ...)
2022-03-23 8:31 ` rguenth at gcc dot gnu.org
@ 2022-03-30 8:16 ` jakub at gcc dot gnu.org
2022-04-21 12:36 ` redi at gcc dot gnu.org
` (24 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-03-30 8:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 99578, which changed state.
Bug 99578 Summary: [11 Regression] gcc-11 -Warray-bounds or -Wstringop-overread warning when accessing a pointer from integer literal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (52 preceding siblings ...)
2022-03-30 8:16 ` jakub at gcc dot gnu.org
@ 2022-04-21 12:36 ` redi at gcc dot gnu.org
2022-05-27 8:15 ` rguenth at gcc dot gnu.org
` (23 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: redi at gcc dot gnu.org @ 2022-04-21 12:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 104966, which changed state.
Bug 104966 Summary: [11/12 Regression] Yet another bogus -Warray-bounds warning in libstdc++ headers
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104966
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (53 preceding siblings ...)
2022-04-21 12:36 ` redi at gcc dot gnu.org
@ 2022-05-27 8:15 ` rguenth at gcc dot gnu.org
2022-05-27 8:33 ` rguenth at gcc dot gnu.org
` (22 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 8:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 84053, which changed state.
Bug 84053 Summary: [9 Regression] missing -Warray-bounds accessing a local array across inlined function boundaries
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84053
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (54 preceding siblings ...)
2022-05-27 8:15 ` rguenth at gcc dot gnu.org
@ 2022-05-27 8:33 ` rguenth at gcc dot gnu.org
2022-05-31 14:42 ` msebor at gcc dot gnu.org
` (21 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 8:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 90387, which changed state.
Bug 90387 Summary: [9 Regression] __builtin_constant_p and -Warray-bounds warnings
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90387
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (55 preceding siblings ...)
2022-05-27 8:33 ` rguenth at gcc dot gnu.org
@ 2022-05-31 14:42 ` msebor at gcc dot gnu.org
2022-06-15 9:50 ` rguenth at gcc dot gnu.org
` (20 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: msebor at gcc dot gnu.org @ 2022-05-31 14:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 105762, which changed state.
Bug 105762 Summary: [12/13 Regression] -Warray-bounds false positives for integer-to-pointer casts since r12-2132-ga110855667782dac
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105762
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (56 preceding siblings ...)
2022-05-31 14:42 ` msebor at gcc dot gnu.org
@ 2022-06-15 9:50 ` rguenth at gcc dot gnu.org
2022-09-12 7:57 ` rguenth at gcc dot gnu.org
` (19 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-06-15 9:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 105726, which changed state.
Bug 105726 Summary: [10/11 Regression] spurious warning with -Warray-bounds
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105726
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (57 preceding siblings ...)
2022-06-15 9:50 ` rguenth at gcc dot gnu.org
@ 2022-09-12 7:57 ` rguenth at gcc dot gnu.org
2022-09-13 16:48 ` pinskia at gcc dot gnu.org
` (18 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-09-12 7:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 106901, which changed state.
Bug 106901 Summary: [13 Regression] False positive -Warray-bounds with -O2 or higher?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106901
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (58 preceding siblings ...)
2022-09-12 7:57 ` rguenth at gcc dot gnu.org
@ 2022-09-13 16:48 ` pinskia at gcc dot gnu.org
2022-12-16 14:14 ` marxin at gcc dot gnu.org
` (17 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-09-13 16:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 106920, which changed state.
Bug 106920 Summary: -Warray-bound false positive regression with -O2 or -Os and constant address
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106920
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (59 preceding siblings ...)
2022-09-13 16:48 ` pinskia at gcc dot gnu.org
@ 2022-12-16 14:14 ` marxin at gcc dot gnu.org
2022-12-19 21:38 ` pinskia at gcc dot gnu.org
` (16 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-12-16 14:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108127, which changed state.
Bug 108127 Summary: FP due to combination of -Warray-bounds and UBSAN
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108127
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (60 preceding siblings ...)
2022-12-16 14:14 ` marxin at gcc dot gnu.org
@ 2022-12-19 21:38 ` pinskia at gcc dot gnu.org
2022-12-20 14:06 ` rguenth at gcc dot gnu.org
` (15 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-12-19 21:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 91584, which changed state.
Bug 91584 Summary: [9 Regression] Bogus warning from -Warray-bounds during string assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91584
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (61 preceding siblings ...)
2022-12-19 21:38 ` pinskia at gcc dot gnu.org
@ 2022-12-20 14:06 ` rguenth at gcc dot gnu.org
2022-12-24 20:14 ` pinskia at gcc dot gnu.org
` (14 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-12-20 14:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 106149, which changed state.
Bug 106149 Summary: [13 regression] g++.dg/warn/Warray-bounds-16.C had bogus errors after r13-1366-g1eef21ccfa5988
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106149
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (62 preceding siblings ...)
2022-12-20 14:06 ` rguenth at gcc dot gnu.org
@ 2022-12-24 20:14 ` pinskia at gcc dot gnu.org
2022-12-24 20:35 ` jhaberman at gmail dot com
` (13 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-12-24 20:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108217, which changed state.
Bug 108217 Summary: bogus -Warray-bounds with pointer to constant local
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108217
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (63 preceding siblings ...)
2022-12-24 20:14 ` pinskia at gcc dot gnu.org
@ 2022-12-24 20:35 ` jhaberman at gmail dot com
2022-12-24 20:46 ` pinskia at gcc dot gnu.org
` (12 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: jhaberman at gmail dot com @ 2022-12-24 20:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108217, which changed state.
Bug 108217 Summary: bogus -Warray-bounds with pointer to constant local
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108217
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|DUPLICATE |---
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (64 preceding siblings ...)
2022-12-24 20:35 ` jhaberman at gmail dot com
@ 2022-12-24 20:46 ` pinskia at gcc dot gnu.org
2023-01-27 14:39 ` amacleod at redhat dot com
` (11 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-12-24 20:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108217, which changed state.
Bug 108217 Summary: bogus -Warray-bounds with pointer to constant local
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108217
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (65 preceding siblings ...)
2022-12-24 20:46 ` pinskia at gcc dot gnu.org
@ 2023-01-27 14:39 ` amacleod at redhat dot com
2023-01-27 15:16 ` rguenth at gcc dot gnu.org
` (10 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: amacleod at redhat dot com @ 2023-01-27 14:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108306, which changed state.
Bug 108306 Summary: [12/13 Regression] false-positive -Warray-bounds warning emitted with -fsanitize=shift
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108306
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (66 preceding siblings ...)
2023-01-27 14:39 ` amacleod at redhat dot com
@ 2023-01-27 15:16 ` rguenth at gcc dot gnu.org
2023-01-30 21:12 ` amacleod at redhat dot com
` (9 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-27 15:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108306, which changed state.
Bug 108306 Summary: [12 Regression] false-positive -Warray-bounds warning emitted with -fsanitize=shift
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108306
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Resolution|FIXED |---
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (67 preceding siblings ...)
2023-01-27 15:16 ` rguenth at gcc dot gnu.org
@ 2023-01-30 21:12 ` amacleod at redhat dot com
2023-02-13 9:02 ` rguenth at gcc dot gnu.org
` (8 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: amacleod at redhat dot com @ 2023-01-30 21:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108306, which changed state.
Bug 108306 Summary: [12 Regression] false-positive -Warray-bounds warning emitted with -fsanitize=shift
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108306
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (68 preceding siblings ...)
2023-01-30 21:12 ` amacleod at redhat dot com
@ 2023-02-13 9:02 ` rguenth at gcc dot gnu.org
2023-03-09 18:29 ` pinskia at gcc dot gnu.org
` (7 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-02-13 9:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108768, which changed state.
Bug 108768 Summary: bogus -Warray-bounds warnings
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108768
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (69 preceding siblings ...)
2023-02-13 9:02 ` rguenth at gcc dot gnu.org
@ 2023-03-09 18:29 ` pinskia at gcc dot gnu.org
2023-04-27 11:45 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-09 18:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 108980, which changed state.
Bug 108980 Summary: [13 Regression] Warning text missing the warning itself (GCC 13)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108980
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (70 preceding siblings ...)
2023-03-09 18:29 ` pinskia at gcc dot gnu.org
@ 2023-04-27 11:45 ` rguenth at gcc dot gnu.org
2023-05-17 15:05 ` pinskia at gcc dot gnu.org
` (5 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-04-27 11:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 107852, which changed state.
Bug 107852 Summary: [12 Regression] Spurious warnings stringop-overflow and array-bounds copying data as bytes into vector
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107852
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (71 preceding siblings ...)
2023-04-27 11:45 ` rguenth at gcc dot gnu.org
@ 2023-05-17 15:05 ` pinskia at gcc dot gnu.org
2023-07-07 8:45 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-17 15:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 106900, which changed state.
Bug 106900 Summary: Regression after memchr optimization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106900
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (72 preceding siblings ...)
2023-05-17 15:05 ` pinskia at gcc dot gnu.org
@ 2023-07-07 8:45 ` rguenth at gcc dot gnu.org
2023-07-07 9:25 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 8:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 92815, which changed state.
Bug 92815 Summary: [10 Regression] spurious -Wstringop-overflow writing into a flexible array of an extern struct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92815
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (73 preceding siblings ...)
2023-07-07 8:45 ` rguenth at gcc dot gnu.org
@ 2023-07-07 9:25 ` rguenth at gcc dot gnu.org
2023-08-09 18:53 ` gjl at gcc dot gnu.org
` (2 subsequent siblings)
77 siblings, 0 replies; 79+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 9:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 99121, which changed state.
Bug 99121 Summary: [10 Regression] ICE tree check: expected integer_cst, have var_decl in get_len, at tree.h:6037
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99121
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (74 preceding siblings ...)
2023-07-07 9:25 ` rguenth at gcc dot gnu.org
@ 2023-08-09 18:53 ` gjl at gcc dot gnu.org
2024-01-19 4:34 ` sandra at gcc dot gnu.org
2024-01-20 19:49 ` pinskia at gcc dot gnu.org
77 siblings, 0 replies; 79+ messages in thread
From: gjl at gcc dot gnu.org @ 2023-08-09 18:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 105523, which changed state.
Bug 105523 Summary: Wrong warning array subscript [0] is outside array bounds
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105523
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (75 preceding siblings ...)
2023-08-09 18:53 ` gjl at gcc dot gnu.org
@ 2024-01-19 4:34 ` sandra at gcc dot gnu.org
2024-01-20 19:49 ` pinskia at gcc dot gnu.org
77 siblings, 0 replies; 79+ messages in thread
From: sandra at gcc dot gnu.org @ 2024-01-19 4:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 104355, which changed state.
Bug 104355 Summary: Misleading -Warray-bounds documentation says "always out of bounds"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104355
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
* [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
` (76 preceding siblings ...)
2024-01-19 4:34 ` sandra at gcc dot gnu.org
@ 2024-01-20 19:49 ` pinskia at gcc dot gnu.org
77 siblings, 0 replies; 79+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-20 19:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 109744, which changed state.
Bug 109744 Summary: mesa/panvk: bogus Warray-bounds on gcc 12.2, fixed in 13 branch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109744
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 79+ messages in thread
end of thread, other threads:[~2024-01-20 19:49 UTC | newest]
Thread overview: 79+ messages (download: mbox.gz / follow: Atom feed)
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2013-02-26 9:48 [Bug tree-optimization/56456] New: [meta-bug] bogus warning when inlining: "array subscript is above array bounds" amylaar at gcc dot gnu.org
2013-02-26 10:18 ` [Bug tree-optimization/56456] " rguenth at gcc dot gnu.org
2014-06-12 13:07 ` [Bug tree-optimization/56456] [meta-bug] bogus warning when inlining or unrolling: " rguenth at gcc dot gnu.org
2015-02-24 14:05 ` rguenth at gcc dot gnu.org
2019-03-18 23:49 ` [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds msebor at gcc dot gnu.org
2020-04-13 20:27 ` msebor at gcc dot gnu.org
2020-04-18 18:22 ` law at redhat dot com
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2021-05-14 11:16 ` jakub at gcc dot gnu.org
2021-05-14 11:38 ` jakub at gcc dot gnu.org
2021-07-06 21:32 ` msebor at gcc dot gnu.org
2021-07-08 22:12 ` msebor at gcc dot gnu.org
2021-07-08 22:42 ` msebor at gcc dot gnu.org
2021-07-13 17:02 ` msebor at gcc dot gnu.org
2021-07-20 14:38 ` msebor at gcc dot gnu.org
2021-08-24 16:50 ` msebor at gcc dot gnu.org
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2021-09-01 15:02 ` msebor at gcc dot gnu.org
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