https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120905
--- Comment #16 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > I'll try to recompile GCC 6.5 with GCC 5.5 again, but this time not with > just '--with-gnu-as', buth with also '--with-as=/usr/local/bin/as'. Perhaps > that will fix this. Yes, that's the right thing to do.