https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81733
--- Comment #15 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> --- > I think this is a dup of 81033 - please try the attached patch(es) there. A x86_64-apple-darwin11.4.2 bootstrap with that patch applied is into stage 2 now, so it does indeed seem to fix the bug. However, I had the patch in my common tree and x86_64-pc-linux-gnu bootstraps break badly with many comparison failures. Reverting just that patch allows them to finish.