http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48403
--- Comment #12 from Zdenek Sojka <zsojka at seznam dot cz> 2011-04-02 13:38:00 UTC --- Created attachment 23852 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23852 diff of disassemly Configuring with /mnt/svn/gcc-trunk/configure --enable-languages=c,c++ is enough to reproduce the failure: Comparing stages 2 and 3 warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs Bootstrap comparison failure! gcc/tree-ssa-loop-ivopts.o differs gcc/tree-ssa-loop-ivcanon.o differs gcc/build/genautomata.o differs gcc/fold-const.o differs gcc/mcf.o differs gcc/tree-cfg.o differs gcc/c-parser.o differs gcc/ira-color.o differs gcc/ira-costs.o differs gcc/i386.o differs gcc/cfgcleanup.o differs gcc/loop-iv.o differs gcc/ipa-prop.o differs gcc/c-decl.o differs gcc/omega.o differs gcc/insn-emit.o differs gcc/sched-rgn.o differs gcc/sched-deps.o differs libcpp/expr.o differs zlib/libz_a-infback.o differs make[2]: *** [compare] Error 1 Attached is diff if disassemly (objdump -d) of those files from stage2/3.