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

[zbeekman at gmail dot com]

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

--- Comment #89 from Zaak <zbeekman at gmail dot com> ---
Anyone have a patch for 4.9? A user wants one, but I can't build 4.9 from
source on Mojave.