[Bug libstdc++/81797] gcc 7.1.0 fails to build on macOS 10.13 (High Sierra):

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |6.4

--- Comment #63 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Workaround in place for 6.4, 7.4 and 8.1

For older releases don't build libstdc++ with -j or hack the sources (at least
until APFS gets fixed).