[issue23812] asyncio.Queue.put_nowait(), followed get() task cancellation leads to item being lost

[Gustavo J. A. M. Carneiro]

Gustavo J. A. M. Carneiro added the comment:

I was wrong, there still needs to be some cleanup in cancellation, even with the new approach.  But it does solve the out-of-order problem.

I don't know if it should be applied to rc1.  I wish I had more time to test.  Up to you guys.

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Added file: http://bugs.python.org/file40142/p.diff

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