Eryk Sun <eryk...@gmail.com> added the comment:

In Windows, the error for a path reparse (e.g. symlink or junction) that can't 
be resolved is ERROR_CANT_RESOLVE_FILENAME. Another common error is 
ERROR_INVALID_REPARSE_DATA. This can occur if the reparse data is malformed or 
if the target device is invalid for the reparse type. For example, a junction 
is restricted to [bind-]mounting local volumes, so it's invalid if it targets a 
remote device.

Windows errors to ignore should be added to _IGNORED_WINERRORS in 
Lib/pathlib.py. For example:

    _IGNORED_WINERRORS = (
        # ...
        1921, # ERROR_CANT_RESOLVE_FILENAME - similar to POSIX ELOOP
        4392, # ERROR_INVALID_REPARSE_DATA  - also for disallowed device targets
    )

----------
nosy: +eryksun

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<https://bugs.python.org/issue36035>
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