http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48444
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-04-05 14:51:46 UTC --- On x86_64-apple-darwin10 r171957, I bootstrap with --enable-checking=release (or with the default value), but I also get Bootstrap comparison failure! gcc/final.o differs gcc/haifa-sched.o differs libiberty/cp-demangle.o differs make[2]: *** [compare] Error 1 with --disable-checking.