[issue38688] Python 3.8 regression: endless loop in shutil.copytree

[Giampaolo Rodola']

Change by Giampaolo Rodola' <g.rodola at gmail.com>:


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stage: patch review -> commit review
versions: +Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38688>
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