[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 #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. the experimental::filesystem::create_directories function still has this
problem on Windows, but the TS support on Windows is minimal anyway. I'm not
going to fix it at this time.