[Bug libstdc++/98471] libstdc++ fails to build with clang on windows because of filesystem bug

[unlvsur at live dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98471

--- Comment #1 from cqwrteur <unlvsur at live dot com> ---
Is this possible to fix? Is that anything wrong with the patch I provided?