4.6-20100515 (r159445) bootstrapped fine on my sparc64-linux machine. 4.6-20100522 (r159746) gets a bootstrap comparison failure in stage 3:
... Comparing stages 2 and 3 warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! libiberty/cp-demangle.o differs make[2]: *** [compare] Error 1 make[2]: Leaving directory `/mnt/scratch/objdir46' make[1]: *** [stage3-bubble] Error 2 make[1]: Leaving directory `/mnt/scratch/objdir46' make: *** [bootstrap] Error 2 Configuration parameters: /mnt/scratch/gcc-4.6-20100522/configure --with-gmp=/home/mikpe/pkgs/linux-sparc64/gmp-4.3.2 --with-mpfr=/home/mikpe/pkgs/linux-sparc64/mpfr-2.4.2 --with-mpc=/home/mikpe/pkgs/linux-sparc64/mpc-0.8.1 --with-cpu=v8 --enable-multilib --disable-plugin --disable-lto --disable-nls --enable-threads=posix --enable-checking=release --disable-libmudflap --enable-languages=c I'll try to bisect it. -- Summary: [4.6 regression] gcc-4.6-20100522 bootstrap comparison failure on sparc64 Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mikpe at it dot uu dot se GCC build triplet: sparc64-unknown-linux-gnu GCC host triplet: sparc64-unknown-linux-gnu GCC target triplet: sparc64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44255