[issue21627] Concurrently closing files and iterating over the open files directory is not well specified

[Dan Snider]

Dan Snider <mr.assume.away at gmail.com> added the comment:

On Android, if os.close_range closes the file descriptor of the scandir iterator, the interpreter immediately crashes eg:

>>> import os
>>> os.scandir()
<posix.ScandirIterator object at 0x7082d6ef10>
>>> os.closerange(3,9999)
fdsan: attempted to close file descriptor 3, expected to be unowned, actually owned by DIR* 0x7263390290
Aborted
$

Sorry if this isn't an appropriate place to add this, but the title matched the concept I think and I don't know enough to judge whether this is something that needs to be fixed.

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nosy: +bup

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue21627>
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