[issue12464] tempfile.TemporaryDirectory.cleanup follows symbolic links

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

I agree with Antoine - it's a simple bug introduced by the attempt to allow temporary directories to be correctly cleaned up during interpreter shutdown.

The race condition due to the usage of LBYL is shared with the full shutil.rmtree implementation, so the patch looks reasonable to me.

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<http://bugs.python.org/issue12464>
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