[issue12041] test_os test_ctypes test_wait3 causes test_wait3 error

[R. David Murray]

New submission from R. David Murray <rdmurray at bitdance.com>:

It doesn't matter which order test_os and test_ctypes run in, but if they precede test_wait3 test_wait3 will fail.  When the test is immediately re-run it passes.

The reason ought to be interesting once we figure it out :)

Tested on linux.  Doesn't appear to affect other branches.

[1/3] test_os
[2/3] test_ctypes
[3/3] test_wait3
test test_wait3 failed -- Traceback (most recent call last):
  File "/home/rdmurray/python/p33/Lib/test/fork_wait.py", line 72, in test_wait
    self.wait_impl(cpid)
  File "/home/rdmurray/python/p33/Lib/test/test_wait3.py", line 30, in wait_impl
    self.assertEqual(spid, cpid)
AssertionError: 14480 != 14487

----------
keywords: buildbot
messages: 135625
nosy: r.david.murray
priority: normal
severity: normal
stage: needs patch
status: open
title: test_os test_ctypes test_wait3 causes test_wait3 error
type: behavior
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12041>
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