[issue33623] Fix possible SIGSGV when asyncio.Future is created in __del__

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

It is okay if the fact that half of the objects are freed leads to raising exceptions. But an assertion failure is sign of bugs in Python core or the _asyncio module. PR 7080 removes one way of exposing these bugs, but bugs itself still are here, and there may be other ways of triggering a crash.

Can this crash be reproduced without uvloop? What is the backtrace of the assertion failure?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33623>
_______________________________________