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

[fxcoudert at gcc dot gnu.org]

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

Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-08-13
     Ever confirmed|0                           |1

--- Comment #4 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
We have a Homebrew user report it, and I can see it myself. It is intermittent,
and I have seen it happen twice, always with "make -j4" (2 out of 4 parallel
builds). Building with -j1 does not appear to trigger the issue.