http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50010
--- Comment #4 from Gary Funck <gary at intrepid dot com> 2011-08-20 17:03:58 UTC --- We ran a reghunt of sorts and came up with the following results. The first confirmed bootstrap comparison failure occurred after revision 177265 was applied. r177265 | uros | 2011-08-03 03:46:04 -0700 (Wed, 03 Aug 2011) | 9 lines However, the builds before that revision terminated with a compilation error in config/linux/affinity.c, which was fixed by this revision. The compilation error was introduced by this commit: r177194 | jakub | 2011-08-02 09:13:29 -0700 (Tue, 02 Aug 2011) | 238 lines Merge from gomp-3_1-branch branch: Thus, it seems that revision 177194 or a subsequent revision preceding 177265 introduced the bootstrap comparison failure on i386 (we ran our tests on i686 running CentOS).