New submission from STINNER Victor <victor.stin...@haypocalc.com>:
The following code does deadlock if the subprocess writes a lot of output to
stdout and stderr:
pipe = Popen(cmd, shell=True, stdout=PIPE, stderr=PIPE)
try:
stdout, stderr = pipe.stdout.read(), pipe.stderr.read()
finally:
pipe.stdout.close()
pipe.stderr.close()
Popen.communicate() should be used to avoid the issue.
Attached patch uses the .communicate() method and the context manager syntax
(with).
----------
components: Library (Lib)
files: packaging_popen_communicate.patch
keywords: patch
messages: 136286
nosy: haypo, tarek
priority: normal
severity: normal
status: open
title: packaging.util._find_exe_version(): potential deadlock
versions: Python 3.3
Added file: http://bugs.python.org/file22029/packaging_popen_communicate.patch
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<http://bugs.python.org/issue12114>
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