[Bug bootstrap/89864] [9 regression] gcc fails to build/bootstrap with XCode 10.2

[juergen.reuter at desy dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89864

--- Comment #59 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Yes, to me this looks also like an independent problem, and it appears to me
like a sort of race condition. I also just restarted the bootstrap (without a
parallel make). Now I have to do some theoretical physics, will know more
tonight.