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

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

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

--- Comment #7 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Please take your diatribes to /dev/null.  Are you able to test the patch?