https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82092
--- Comment #7 from Jürgen Reuter <juergen.reuter at desy dot de> --- I can confirm that the patch above indeed does work. Interestingly, I don't see the bootstrap on all combinations of Apple Hardware and MAC OS X versions. Apparently, the problem (for me) only shows up on an 2011 Apple i5 with both Sierra and High Sierra and XCode 9.X. AFAI can say, the problem doesn't arise for a 2015 i7 with the same combinations of OSX and XCode versions. Back to the fix by Dominique: yes, it works for the problematic combination I checked.
