[Bug c++/98386] C++20 module: file exists failure and success happen alternatively for windows.

[unlvsur at live dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98386

--- Comment #2 from cqwrteur <unlvsur at live dot com> ---
My build of GCC for Windows can be found here.

https://github.com/expnkx/mingw-gcc