[issue33110] Adding a done callback to a concurrent.futures Future once it has already completed, may raise an exception, contrary to docs

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset b73c21c0be7b42de6a88d67408249c8ec46e28f7 by Miss Islington (bot) in branch '3.7':
bpo-33110: Catch errors raised when running add_done_callback on already completed futures (GH-13141)
https://github.com/python/cpython/commit/b73c21c0be7b42de6a88d67408249c8ec46e28f7


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nosy: +miss-islington

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33110>
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