[Bug gcov-profile/38292] New: corrupted profile info with -O[23] -fprofile-use

[doko at ubuntu dot com]

seen with a profiled build (make profile-opt
PROFILE_TASK='$(srcdir)/Lib/test/regrtest.py') building python-3.0rc3 on
i486-linux-gnu. Using pybench as the PROFILE_TASK doesn't show this bug). Seen
PR22471, but this one was reported long ago. What other information should be
provided for this kind of report?

gcc -pthread -c -fno-strict-aliasing -DNDEBUG -g -O2 -Wall -Wstrict-prototypes 
-fprofile-use -I. -IInclude -I../Include   -DPy_BUILD_CORE -o Modules/config.o
Modules/config.c
../Python/thread.c: In function 'PyThread_acquire_lock':
../Python/thread.c:419: error: corrupted profile info: number of executions for
edge 16-3 thought to be -1
../Python/thread.c:419: error: corrupted profile info: number of executions for
edge 16-17 thought to be 5657524
make[3]: *** [Python/thread.o] Error 1


-- 
           Summary: corrupted profile info with -O[23] -fprofile-use
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: doko at ubuntu dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38292