http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52172
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-10 15:10:54 UTC --- So, can you from your build log paste the command to compile var-tracking.c with the stage2 gcc and rerun it in the gcc subdir with additional -fcompare-debug option? It might be a -fcompare-debug issue (in that case rerun with -save-temps option and attach var-tracking.i together with the exact command line option used to compile it, or stage1 or stage2 cc1/cc1plus might be miscompiled.
