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* [Bug ipa/94762] New: ICE: Segmentation fault (in is_tm_irrevocable)
@ 2020-04-25 18:41 asolokha at gmx dot com
  2020-04-27  4:08 ` [Bug ipa/94762] [8/9/10 Regression] ICE: Segmentation fault (in is_tm_irrevocable) since r7-1710-g849a76a5a20db383 marxin at gcc dot gnu.org
                   ` (8 more replies)
  0 siblings, 9 replies; 10+ messages in thread
From: asolokha at gmx dot com @ 2020-04-25 18:41 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94762

            Bug ID: 94762
           Summary: ICE: Segmentation fault (in is_tm_irrevocable)
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, trans-mem
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---
            Target: x86_64-unknown-linux-gnu

gcc-10.0.1-alpha20200419 snapshot (g:717e91dbc44c6bf55a498f45f6045191ceb10a11),
gcc 9.3, gcc 8.3, gcc 7.3 all ICE when compiling the following testcase,
reduced from
test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/F.pass.cpp
from the libcxx 10.0.0 test suite, w/ -O1 -fgnu-tm:

_Bool __attribute__ ((transaction_safe))
g5 (int fh, int gf)
{
  return __atomic_compare_exchange_n (&fh, &gf, 0, 0, 0, 0);
}

% x86_64-unknown-linux-gnu-gcc-10.0.1 -O1 -fgnu-tm -c gl8a6jtn.c
during IPA pass: tmipa
gl8a6jtn.c: In function 'g5':
gl8a6jtn.c:5:1: internal compiler error: Segmentation fault
    5 | }
      | ^
0xd9466f crash_signal
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/toplev.c:328
0xd9a5e0 is_tm_irrevocable
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:234
0xd9c20f ipa_tm_scan_irr_block
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:4377
0xd9c20f ipa_tm_scan_irr_blocks
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:4449
0xd9c9b5 ipa_tm_scan_irr_function
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:4611
0xd9ea1e ipa_tm_execute
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:5512
0xd9ea1e execute
       
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/trans-mem.c:5670

Citing Jakub's PR94106 comment 2: "Nobody really maintains the -fgnu-tm stuff
anymore".

I didn't test it but it looks like Marek's patch from PR68122 comment 8, even
if is not a right fix, works this ICE around.

^ permalink raw reply	[flat|nested] 10+ messages in thread
end of thread, other threads:[~2023-07-07 10:37 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-25 18:41 [Bug ipa/94762] New: ICE: Segmentation fault (in is_tm_irrevocable) asolokha at gmx dot com
2020-04-27  4:08 ` [Bug ipa/94762] [8/9/10 Regression] ICE: Segmentation fault (in is_tm_irrevocable) since r7-1710-g849a76a5a20db383 marxin at gcc dot gnu.org
2020-04-27  6:36 ` rguenth at gcc dot gnu.org
2021-01-14  8:39 ` [Bug ipa/94762] [8/9/10/11 " rguenth at gcc dot gnu.org
2021-05-14  9:53 ` [Bug ipa/94762] [9/10/11/12 " jakub at gcc dot gnu.org
2021-06-01  8:17 ` rguenth at gcc dot gnu.org
2021-09-05 17:48 ` pinskia at gcc dot gnu.org
2022-05-27  9:42 ` [Bug ipa/94762] [10/11/12/13 " rguenth at gcc dot gnu.org
2022-06-28 10:40 ` jakub at gcc dot gnu.org
2023-07-07 10:37 ` [Bug ipa/94762] [11/12/13/14 " rguenth at gcc dot gnu.org

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