https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66252
Bug ID: 66252 Summary: [6 regression] bootstrap comparison failures on sparc-linux Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: mikpelinux at gmail dot com Target Milestone: --- Attempting to bootstrap gcc trunk on sparc64-linux with options to default to 32-bit code, fails with: Comparing stages 2 and 3 warning: gcc/cc1-checksum.o differs warning: gcc/cc1plus-checksum.o differs Bootstrap comparison failure! gcc/ggc-page.o differs gcc/tree-ssa-alias.o differs gcc/gimple-streamer-in.o differs gcc/host-linux.o differs gcc/lto-streamer-in.o differs gcc/builtins.o differs gcc/expmed.o differs gcc/ipa-inline-analysis.o differs gcc/lto-cgraph.o differs gcc/dwarf2out.o differs gcc/ipa-cp.o differs gcc/fold-const.o differs gcc/df-core.o differs gcc/ipa-prop.o differs gcc/lra-spills.o differs gcc/tree-streamer-in.o differs gcc/ubsan.o differs gcc/ipa-inline.o differs gcc/calls.o differs gcc/ifcvt.o differs gcc/cgraph.o differs gcc/asan.o differs gcc/profile.o differs gcc/expr.o differs gcc/lra-eliminations.o differs gcc/ipa-devirt.o differs gcc/ipa-profile.o differs gcc/lto-streamer.o differs gcc/real.o differs gcc/lra-constraints.o differs gcc/reload.o differs gcc/gcov-dump.o differs gcc/gimple-fold.o differs gcc/ggc-common.o differs gcc/combine.o differs gcc/tree-ssa-threadupdate.o differs gcc/value-prof.o differs gcc/gcc.o differs gcc/statistics.o differs gcc/sched-rgn.o differs libbacktrace/dwarf.o differs libcpp/expr.o differs libdecnumber/decimal128.o differs make[2]: *** [compare] Error 1 make[2]: Leaving directory `/mnt/scratch/objdir' make[1]: *** [stage3-bubble] Error 2 make[1]: Leaving directory `/mnt/scratch/objdir' make: *** [bootstrap] Error 2 It appears to have going on for a while now, my last successful bootstrap of trunk was with the 20150419 snapshot. Starting a bisection now. Configured with: /mnt/scratch/gcc-trunk-r223498/configure --prefix=/mnt/scratch/install6 --with-gmp=/home/mikpe/pkgs/linux-sparc64/gmp-6.0.0 --with-mpfr=/home/mikpe/pkgs/linux-sparc64/mpfr-3.1.2 --with-mpc=/home/mikpe/pkgs/linux-sparc64/mpc-1.0.3 --enable-multilib --disable-plugin --disable-lto --disable-nls --enable-threads=posix --enable-checking=release --disable-libmudflap --enable-languages=c,c++ --build=sparc-unknown-linux --target=sparc-unknown-linux --with-cpu=ultrasparc --enable-targets=all --disable-libsanitizer