[issue17899] os.listdir() leaks FDs if invoked on FD pointing to a non-directory

[Evgeny Kapun]

Evgeny Kapun added the comment:

Simple test:

while True:
    try:
        listdir(0)
    except NotADirectoryError:
        pass

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17899>
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