[New-bugs-announce] [issue39744] asyncio.subprocess's communicate(None) does not close stdin

[Marek Marczykowski-Górecki]

New submission from Marek Marczykowski-Górecki <marmarek at mimuw.edu.pl>:

Standard subprocess's communicate() called with None input (or no argument at all closes process stdin. The asyncio variant does not.
This leads to issue with various processes that wait for EOF on stdin before terminating.

Test script attached.

----------
components: asyncio
files: commmunicate-test.py
messages: 362605
nosy: asvetlov, marmarek, yselivanov
priority: normal
severity: normal
status: open
title: asyncio.subprocess's communicate(None) does not close stdin
versions: Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48910/commmunicate-test.py

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39744>
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