[issue28963] Use-after-free in _asynciomodule.c

[Yury Selivanov]

Yury Selivanov added the comment:

I think the bug is only in _asyncio_Future_remove_done_callback, since future_schedule_callbacks makes a slice first, which cannot be mutated.

I'm attaching a patch.  Inada, would you be able to take a look?

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keywords: +patch
nosy: +ned.deily
priority: normal -> release blocker
Added file: http://bugs.python.org/file45882/Issue28963.patch

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