[issue16140] subprocess.Popen the os.close calls in _execute_child can raise an EBADF exception

[Mark Dickinson]

Mark Dickinson added the comment:

test_gc and test_csv seem to be failing on some of the buildbots as a result of these checkins.  It looks as though the new test_subprocess test creates some uncollectable garbage.

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nosy: +mark.dickinson

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16140>
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