[issue32457] Windows Python cannot handle an early PATH entry containing ".." and python.exe

[Steve Dower]

Steve Dower <steve.dower at python.org> added the comment:

I agree that explicitly normalizing in PC/getpathp.c is the correct approach.

As far as I'm aware, GetModuleFileNameW(NULL) can never fail other than a buffer that is too small, so that whole function can probably be simplified to abort if it happens and just remove the PATH search.

Also, we should use a similar process for PathCchCanonicalizeEx as we already use for PathCchCombineExW in this file to avoid failing on earlier OS versions.

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<https://bugs.python.org/issue32457>
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