https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78267
--- Comment #19 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #18 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- [...] > Bootstrap is still broken with the patch: [...] Did you regen fixincl.x (with ./genfixes in the source tree)? A macOS 10.12 bootstrap is currently running: the fix for <os/trace.h> isn't complete. I'd based it on an older version off opensource.apple.com. I'll post a fixed version once it's ready. Rainer