https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100726
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #2) > I really doubt anything before Windows XP is supported really. I have no interest in making the filesystem library work on old versions of Windows. If we expect libstdc++ to be usable there, that function should just report an error on old versions.