http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48400
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-04-02 15:01:18 UTC --- > Well, then someone will have to debug this somehow; it really looks > like we're producing the same output before and after... I have bootstrapped revision 171815 and powerpc-apple-darwin9/ppc64/libgcc/_clz_s.o at stage 1 for evision 171816 differs from the same file in stage1-powerpc-apple-darwin9/ppc64/libgcc/. collect2 gives a bus error with the former, but not with the later. The only differences for the outputs of dwarfdump are [karma] gcc/rel_build% diff dw_15 dw_16 2c2 < File: ../rel_build-171815/stage1-powerpc-apple-darwin9/ppc64/libgcc/_clz_s.o (ppc64) --- > File: powerpc-apple-darwin9/ppc64/libgcc/_clz_s.o (ppc64) 9c9 < AT_producer( "GNU C 4.7.0 20110401 (experimental) [trunk revision 171815]" ) --- > AT_producer( "GNU C 4.7.0 20110401 (experimental) [trunk > revision 171816]" ) Will it help if I attach the object files?