http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52041
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-30 19:36:33 UTC --- Can't reproduce the -fcompare-debug failure with a cross from x86_64-linux to x86_64-darwin on the provided tree-ssa-strlen.i btw., though of course the configuration of the compiler could be different.