http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56990
Bug #: 56990
Summary: ICE: SIGFPE with -fsanitize=thread and empty struct
Classification: Unclassified
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
CC: do...@gcc.gnu.org, dvyu...@gcc.gnu.org,
ja...@gcc.gnu.org, k...@gcc.gnu.org
Created attachment 29891
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29891
reduced testcase
Compiler output:
$ gcc -fsanitize=thread testcase.c
testcase.c: In function 'foo':
testcase.c:3:6: internal compiler error: Floating point exception
void foo(struct S *p)
^
0xa24dbf crash_signal
/mnt/svn/gcc-trunk/gcc/toplev.c:332
0xa3af12 instrument_expr
/mnt/svn/gcc-trunk/gcc/tsan.c:134
0xa3c406 instrument_gimple
/mnt/svn/gcc-trunk/gcc/tsan.c:612
0xa3c406 instrument_memory_accesses
/mnt/svn/gcc-trunk/gcc/tsan.c:635
0xa3c406 tsan_pass
/mnt/svn/gcc-trunk/gcc/tsan.c:700
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.
Program received signal SIGFPE, Arithmetic exception.
0x0000000000a3af12 in instrument_expr (gsi=..., expr=0x7ffff6d9f000,
is_write=is_write@entry=true) at /mnt/svn/gcc-trunk/gcc/tsan.c:134
134 if (bitpos % (size * BITS_PER_UNIT)
Tested revisions:
r198018 - crash
4.8 r196898 - crash
