[issue20154] Deadlock in asyncio.StreamReader.readexactly()

[Roundup Robot]

Roundup Robot added the comment:

New changeset 54d32e01bbfd by Guido van Rossum in branch 'default':
asyncio: Fix deadlock in readexactly(). Fixes issue #20154.
http://hg.python.org/cpython/rev/54d32e01bbfd

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nosy: +python-dev

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