* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
@ 2022-03-04 12:32 ` ro at gcc dot gnu.org
2022-03-04 13:23 ` ro at gcc dot gnu.org
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From: ro at gcc dot gnu.org @ 2022-03-04 12:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |12.0
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
2022-03-04 12:32 ` [Bug target/104781] " ro at gcc dot gnu.org
@ 2022-03-04 13:23 ` ro at gcc dot gnu.org
2022-03-04 14:00 ` hjl.tools at gmail dot com
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From: ro at gcc dot gnu.org @ 2022-03-04 13:23 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Indeed: with the patch reverted, I'm now running make compare.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
2022-03-04 12:32 ` [Bug target/104781] " ro at gcc dot gnu.org
2022-03-04 13:23 ` ro at gcc dot gnu.org
@ 2022-03-04 14:00 ` hjl.tools at gmail dot com
2022-03-04 15:00 ` ubizjak at gmail dot com
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From: hjl.tools at gmail dot com @ 2022-03-04 14:00 UTC (permalink / raw)
To: gcc-bugs
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-03-04
Status|UNCONFIRMED |WAITING
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot com
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 52563
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52563&action=edit
A patch
Try this.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (2 preceding siblings ...)
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From: ubizjak at gmail dot com @ 2022-03-04 15:00 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Comment on attachment 52563
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52563
A patch
>From ba4854c13c4aaa5b50127f23cb09cf05e3eb229d Mon Sep 17 00:00:00 2001
>From: "H.J. Lu" <hjl.tools@gmail.com>
>Date: Fri, 4 Mar 2022 05:53:14 -0800
>Subject: [PATCH] x86: Disable AVX/SSE on unwind-c.c and unwind-dw2.c
>
>Since %ecx can't be used for both DRAP register and __builtin_eh_return,
>we must avoid stack realignment when __builtin_eh_return is used. Since
Isn't this solved with PR104362?
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (3 preceding siblings ...)
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From: hjl.tools at gmail dot com @ 2022-03-04 15:04 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #3)
> Comment on attachment 52563 [details]
> A patch
>
> >From ba4854c13c4aaa5b50127f23cb09cf05e3eb229d Mon Sep 17 00:00:00 2001
> >From: "H.J. Lu" <hjl.tools@gmail.com>
> >Date: Fri, 4 Mar 2022 05:53:14 -0800
> >Subject: [PATCH] x86: Disable AVX/SSE on unwind-c.c and unwind-dw2.c
> >
> >Since %ecx can't be used for both DRAP register and __builtin_eh_return,
> >we must avoid stack realignment when __builtin_eh_return is used. Since
>
> Isn't this solved with PR104362?
It may not be sufficient for Solaris.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (4 preceding siblings ...)
2022-03-04 15:04 ` hjl.tools at gmail dot com
@ 2022-03-04 20:29 ` ro at CeBiTec dot Uni-Bielefeld.DE
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From: ro at CeBiTec dot Uni-Bielefeld.DE @ 2022-03-04 20:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
--- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
> Created attachment 52563
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52563&action=edit
> A patch
>
> Try this.
That patch certainly did fix the build. Thanks.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (5 preceding siblings ...)
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From: hjl.tools at gmail dot com @ 2022-03-05 2:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #52563|0 |1
is obsolete| |
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 52567
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52567&action=edit
The v2 patch
Please test this patch.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (6 preceding siblings ...)
2022-03-05 2:59 ` hjl.tools at gmail dot com
@ 2022-03-05 13:43 ` ro at CeBiTec dot Uni-Bielefeld.DE
2022-03-07 8:22 ` rguenth at gcc dot gnu.org
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From: ro at CeBiTec dot Uni-Bielefeld.DE @ 2022-03-05 13:43 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #7 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
> Created attachment 52567
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52567&action=edit
> The v2 patch
>
> Please test this patch.
This version works just as well.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (7 preceding siblings ...)
2022-03-05 13:43 ` ro at CeBiTec dot Uni-Bielefeld.DE
@ 2022-03-07 8:22 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2022-03-07 8:22 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
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2022-03-07 8:22 ` rguenth at gcc dot gnu.org
@ 2022-03-08 17:56 ` cvs-commit at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2022-03-08 17:56 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:23ed4df521db9d66782d3f9cf291fc2564cf313a
commit r12-7539-g23ed4df521db9d66782d3f9cf291fc2564cf313a
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Mar 4 05:53:14 2022 -0800
x86: Disallow unsupported EH return
Disallow stack realignment and regparm nested function with EH return
since they don't work together.
gcc/
PR target/104781
* config/i386/i386.cc (ix86_expand_epilogue): Sorry if there is
stack realignment or regparm nested function with EH return.
gcc/testsuite/
PR target/104781
* gcc.target/i386/eh_return-1.c: Add -mincoming-stack-boundary=4.
* gcc.target/i386/eh_return-2.c: Likewise.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
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@ 2022-03-09 14:27 ` cvs-commit at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2022-03-09 14:27 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:caa6c33c5d5223c50657b08e73177e8d54ceee51
commit r12-7565-gcaa6c33c5d5223c50657b08e73177e8d54ceee51
Author: Jakub Jelinek <jakub@redhat.com>
Date: Wed Mar 9 15:25:30 2022 +0100
x86: Define LIBGCC2_UNWIND_ATTRIBUTE on ia32 [PR104781]
On Mon, Mar 07, 2022 at 07:06:28AM -0800, H.J. Lu wrote:
> Since eh_return doesn't work with stack realignment, disable SSE on
> unwind-c.c and unwind-dw2.c to avoid stack realignment with the 4-byte
> incoming stack to avoid SSE usage which is caused by
The following change does that using LIBGCC2_UNWIND_ATTRIBUTE macro
instead,
for ia32 only by forcing -mgeneral-regs-only on routines that call
__builtin_eh_return in libgcc.
2022-03-09 Jakub Jelinek <jakub@redhat.com>
PR target/104781
* config/i386/i386.h (LIBGCC2_UNWIND_ATTRIBUTE): Define for ia32.
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (10 preceding siblings ...)
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@ 2022-03-09 14:44 ` jakub at gcc dot gnu.org
2022-03-09 14:45 ` jakub at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2022-03-09 14:44 UTC (permalink / raw)
To: gcc-bugs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 104838 has been marked as a duplicate of this bug. ***
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (11 preceding siblings ...)
2022-03-09 14:44 ` jakub at gcc dot gnu.org
@ 2022-03-09 14:45 ` jakub at gcc dot gnu.org
2022-03-10 9:36 ` ro at CeBiTec dot Uni-Bielefeld.DE
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From: jakub at gcc dot gnu.org @ 2022-03-09 14:45 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I believe this should now be fixed, Rainer, can you please confirm?
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (12 preceding siblings ...)
2022-03-09 14:45 ` jakub at gcc dot gnu.org
@ 2022-03-10 9:36 ` ro at CeBiTec dot Uni-Bielefeld.DE
2022-03-10 9:42 ` jakub at gcc dot gnu.org
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From: ro at CeBiTec dot Uni-Bielefeld.DE @ 2022-03-10 9:36 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #12 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> I believe this should now be fixed, Rainer, can you please confirm?
It is: last night's i386-pc-solaris2.11 bootstraps were fine without any
local patches.
Thanks.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (13 preceding siblings ...)
2022-03-10 9:36 ` ro at CeBiTec dot Uni-Bielefeld.DE
@ 2022-03-10 9:42 ` jakub at gcc dot gnu.org
2022-03-15 10:13 ` drepper.fsp+rhbz at gmail dot com
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From: jakub at gcc dot gnu.org @ 2022-03-10 9:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|WAITING |RESOLVED
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Thanks.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (14 preceding siblings ...)
2022-03-10 9:42 ` jakub at gcc dot gnu.org
@ 2022-03-15 10:13 ` drepper.fsp+rhbz at gmail dot com
2022-03-15 10:17 ` jakub at gcc dot gnu.org
2022-03-22 16:34 ` hjl.tools at gmail dot com
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From: drepper.fsp+rhbz at gmail dot com @ 2022-03-15 10:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
Ulrich Drepper <drepper.fsp+rhbz at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |drepper.fsp+rhbz at gmail dot com
--- Comment #14 from Ulrich Drepper <drepper.fsp+rhbz at gmail dot com> ---
My standard build now fails in stage 1 with this patch when compiling
unwind-dw2.c for x86:
.../gcc-builds/20220315/gcc/include/cetintrin.h: In function
‘_Unwind_RaiseException’:
.../gcc-builds/20220315/gcc/include/cetintrin.h:47:1: error: inlining failed in
call to ‘always_inline’ ‘_get_ssp’: target specific option mismatch
47 | _get_ssp (void)
| ^~~~~~~~
.../gnu/gcc/libgcc/config/i386/shadow-stack-unwind.h:32:26: note: called from
here
32 | _Unwind_Word ssp = _get_ssp (); \
| ^~~~~~~~~~~
.../gnu/gcc/libgcc/unwind-dw2.c:1654:7: note: in expansion of macro
‘_Unwind_Frames_Extra’
1654 | _Unwind_Frames_Extra (FRAMES);
\
| ^~~~~~~~~~~~~~~~~~~~
.../gnu/gcc/libgcc/unwind.inc:140:3: note: in expansion of macro
‘uw_install_context’
140 | uw_install_context (&this_context, &cur_context, frames);
and so on for the other CET functions. When I comment out the
LIBGCC2_UNWIND_ATTRIBUTE definition in config/i386/i386.h it works.
The compiler command line that is used is
.../gcc-builds/20220315/./gcc/xgcc -B.../gcc-builds/20220315/./gcc/
-B/usr/x86_64-redhat-linux/bin/ -B/usr/x86_64-redhat-linux/lib/ -isystem
/usr/x86_64-redhat-linux/include -isystem /usr/x86_64-redhat-linux/sys-include
-fno-checking -g -O2 -m32 -O2 -g -O2 -DIN_GCC -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wno-format -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -fpic
-mlong-double-80 -DUSE_ELF_SYMVER -fcf-protection -mshstk -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -fpic -mlong-double-80 -DUSE_ELF_SYMVER
-fcf-protection -mshstk -I. -I. -I../../.././gcc -I.../gcc/libgcc
-I.../gcc/libgcc/. -I.../gcc/libgcc/../gcc -I.../gcc/libgcc/../include
-I.../gcc/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS
-DUSE_TLS -o unwind-dw2.o -MT unwind-dw2.o -MD -MP -MF unwind-dw2.dep
-fexceptions -c .../gcc/libgcc/unwind-dw2.c -fvisibility=hidden -DHIDE_EXPORTS
This is on an up-to-date Fedora 35 system with gcc 11.2.1-9
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (15 preceding siblings ...)
2022-03-15 10:13 ` drepper.fsp+rhbz at gmail dot com
@ 2022-03-15 10:17 ` jakub at gcc dot gnu.org
2022-03-22 16:34 ` hjl.tools at gmail dot com
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From: jakub at gcc dot gnu.org @ 2022-03-15 10:17 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r12-7654-gda24fce323eaf088 should fix that.
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* [Bug target/104781] [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap
2022-03-04 12:31 [Bug target/104781] New: [12 regression] SEGV in _Unwind_GetGR during i386 Ada bootstrap ro at gcc dot gnu.org
` (16 preceding siblings ...)
2022-03-15 10:17 ` jakub at gcc dot gnu.org
@ 2022-03-22 16:34 ` hjl.tools at gmail dot com
17 siblings, 0 replies; 19+ messages in thread
From: hjl.tools at gmail dot com @ 2022-03-22 16:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104781
Bug 104781 depends on bug 104890, which changed state.
Bug 104890 Summary: [11 Regression] <x86gprintrin.h> doesn't work with __attribute__((target ("general-regs-only"))) and -march=i686
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104890
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 19+ messages in thread