https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864
--- Comment #13 from Jürgen Reuter <juergen.reuter at desy dot de> --- I see. For the moment, I will be downgrading to XCode 10.1 with its command line tools, but I really hope that either you or them will be able to fix it. If you were following the progress from Apple, maybe you could also note in this PR in case the issue is fixed by Apple?
