[Bug libstdc++/102839] filesystem::path::wstring runs in C locale / practically always throws

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102839

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is the same issue as PR 95048 comment 3 describes.