[issue39360] python3.8 regression - ThreadPool join via __del__ hangs forever

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

> which looks a bit weird to me

Is explained in the message in https://bugs.python.org/msg364211:

What happens is that is moving that code so is executed in both code paths: explicit termination and multiprocessing finalization.

> Unfortunately test case from first message in this bug report still hangs for me with this applied.

Hummm, the test case from this bug is precisely the test case in PR 19009 so it should not hang.

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<https://bugs.python.org/issue39360>
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