[Bug libstdc++/86507] std::filesystem not work on Windows

[tower120 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86507

--- Comment #1 from tower120 <tower120 at gmail dot com> ---
Created attachment 44388
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44388&action=edit
compilation error message