https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108350
--- Comment #4 from niXman <i.nixman at autistici dot org> --- > FYI `GetFinalPathNameByHandle` is known to fail on drives that are created > via `DefineDosDevice` (e.g. via the SUBST command). So I recommend using > `GetFullPathName` as a fallback if you find that `GetFinalPathNameByHandle` > fails. could you give me a hint, what should I use for `dwFlags` param for `GetFinalPathNameByHandle()` ? (because for me all the options are incomprehensible) because according to your github profile it looks like you are Windows developer :) https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getfinalpathnamebyhandlea#parameters thanks!