[Bug libstdc++/87846] std::filesystem::create_directories with a path with a trailing slash does not create any directory

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87846

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Actually no, it's fine, the relevant test fails because exists("foo/") fails,
due to PR 88881, and *that* isn't fixed for the experimental TS.