[Bug libstdc++/108178] Filesystem::copy_file can't copy from /proc on Linux machines

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108178

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
But that's a bug of the procfs filesystem, not of the standard library.