https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87146
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |x86_64-*-*, i?86-*-* --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- There is nothing special about a non-GCC host compiler bootstrap. Does clang default to optimizing? If so try bootstrapping with STAGE1_CFLAGS="-O0"