[Bug c++/99936] [modules] FAIL: g++.dg/modules/xtreme-header* on Darwin

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99936

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Francois-Xavier Coudert from comment #4)
> Currently still fails on x86_64-apple-darwin21
> (https://gcc.gnu.org/pipermail/gcc-testresults/2021-December/743901.html),
> as well as the future aarch64-apple-darwin21. Looks like a front-end issue.

It is, there are a few (many) C++ modules issues that are not target/host
dependent.