http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53197
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-05-02 22:39:48 UTC --- Same files: Comparing stages 2 and 3 warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! gcc/tree-ssa-math-opts.o differs gcc/tree-cfgcleanup.o differs gcc/tree-ssa-live.o differs gcc/trans-mem.o differs gcc/tree-inline.o differs gcc/tree-object-size.o differs gcc/tree-emutls.o differs gcc/tree-if-conv.o differs gcc/tree-cfg.o differs gcc/tree-sra.o differs make[2]: *** [compare] Error 1 make[2]: Leaving directory `/home/jwakely/build' make[1]: *** [stage3-bubble] Error 2 make[1]: Leaving directory `/home/jwakely/build' make: *** [all] Error 2 That's on gcc20 in the compile farm, using GNU assembler (GNU Binutils for Debian) 2.20.1-system.20100303