[Bug libstdc++/118395] Constructor of std::barrier is not constexpr

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118395

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Patch posted:
https://gcc.gnu.org/pipermail/gcc-patches/2025-January/673200.html