http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46194
--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> 2010-12-31 13:09:08 UTC --- When -fcheck-data-deps is added, the testcase doesn't fail (r168358, x86_64-linux): $ gcc -O -ftree-parallelize-loops=2 block-0.c -fcheck-data-deps $ ./a.out $ echo $? 0