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* [Bug sanitizer/64888] New: ubsan doesn't work with openmp
@ 2015-01-31 17:20 mikulas at artax dot karlin.mff.cuni.cz
  2015-01-31 17:38 ` [Bug sanitizer/64888] " mpolacek at gcc dot gnu.org
                   ` (13 more replies)
  0 siblings, 14 replies; 15+ messages in thread
From: mikulas at artax dot karlin.mff.cuni.cz @ 2015-01-31 17:20 UTC (permalink / raw)
  To: gcc-bugs

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64888

            Bug ID: 64888
           Summary: ubsan doesn't work with openmp
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikulas at artax dot karlin.mff.cuni.cz
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org

Undefined behavior sanitizer and openmp don't work together. Ubsan generates
some internal variables and openmp complains that shareability of these
variables haven't been defined. Try to compile this program with
gcc -fsanitize=undefined -fopenmp openmp-ubsan.c

#include <omp.h>

int main(void)
{
        unsigned a = 1;
        unsigned b = 2;
        unsigned c;
#pragma omp parallel default(none) shared(a,b) private(c)
        {
                c = a / b;
        }
}

openmp-ubsan.c: In function ‘main’:
openmp-ubsan.c:10:9: error: ‘*.Lubsan_data0’ not specified in enclosing
parallel
   c = a / b;
         ^
openmp-ubsan.c:8:9: error: enclosing parallel
 #pragma omp parallel default(none) shared(a,b) private(c)
         ^
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From: "ysato at users dot sourceforge.jp" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/64889] New: [h8300] ICE maybe_record_trace_start, at dwarf2cfi.c:2318
Date: Sat, 31 Jan 2015 17:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd889

            Bug ID: 64889
           Summary: [h8300] ICE maybe_record_trace_start, at
                    dwarf2cfi.c:2318
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ysato at users dot sourceforge.jp

Created attachment 34639
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id4639&actioníit
reproduce on ICE

reporoduce code attached.

$ h8300-elf-gcc -mh -mint32 -Os -g -fomit-frame-pointer -c namei.c
namei.c: In function 'SYSC_mknodat':
namei.c:38:6: warning: implicit declaration of function 'new_decode_dev'
[-Wimplicit-function-declaration]
      new_decode_dev(dev));
      ^
../../linux/namei.c:42:1: internal compiler error: in maybe_record_trace_start,
at dwarf2cfi.c:2318
 }
 ^
0x6d1d87 maybe_record_trace_start
    ../../gcc/dwarf2cfi.c:2318
0x6d2640 scan_trace
    ../../gcc/dwarf2cfi.c:2496
0x6d2e4a create_cfi_notes
    ../../gcc/dwarf2cfi.c:2650
0x6d2e4a execute_dwarf2_frame
    ../../gcc/dwarf2cfi.c:3006
0x6d2e4a execute
    ../../gcc/dwarf2cfi.c:3486
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.


^ permalink raw reply	[flat|nested] 15+ messages in thread
end of thread, other threads:[~2022-05-11  6:32 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-31 17:20 [Bug sanitizer/64888] New: ubsan doesn't work with openmp mikulas at artax dot karlin.mff.cuni.cz
2015-01-31 17:38 ` [Bug sanitizer/64888] " mpolacek at gcc dot gnu.org
2015-09-23 16:55 ` mpolacek at gcc dot gnu.org
2015-09-23 22:21 ` mikulas at artax dot karlin.mff.cuni.cz
2015-09-24  8:18 ` mpolacek at gcc dot gnu.org
2021-10-19  8:09 ` claudiokozicky at gmail dot com
2021-10-19  8:16 ` claudiokozicky at gmail dot com
2021-10-19  8:25 ` claudiokozicky at gmail dot com
2021-10-19  8:28 ` claudiokozicky at gmail dot com
2021-10-20 10:44 ` [Bug middle-end/64888] " jakub at gcc dot gnu.org
2021-10-21  8:30 ` cvs-commit at gcc dot gnu.org
2021-11-29  8:49 ` cvs-commit at gcc dot gnu.org
2022-05-10  8:21 ` cvs-commit at gcc dot gnu.org
2022-05-11  6:22 ` cvs-commit at gcc dot gnu.org
2022-05-11  6:32 ` jakub at gcc dot gnu.org

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