Works around issue3863: freebsd4/5/6 and os2emx are known to have OS bugs when
calling fork() from a child thread. This disables that unit test (with a note printed to stderr) on those platforms. A caveat about buggy platforms is added to the os.fork documentation.
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@ -1646,6 +1646,10 @@ written in Python, such as a mail server's external command delivery program.
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Fork a child process. Return ``0`` in the child and the child's process id in the
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parent. If an error occurs :exc:`OSError` is raised.
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Note that some platforms including FreeBSD <= 6.3, Cygwin and OS/2 EMX have
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known issues when using fork() from a thread.
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Availability: Unix.
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@ -380,6 +380,12 @@ class ThreadJoinOnShutdown(unittest.TestCase):
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import os
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if not hasattr(os, 'fork'):
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return
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# Skip platforms with known problems forking from a worker thread.
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# See http://bugs.python.org/issue3863.
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if sys.platform in ('freebsd4', 'freebsd5', 'freebsd6', 'os2emx'):
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print >>sys.stderr, ('Skipping test_3_join_in_forked_from_thread'
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' due to known OS bugs on'), sys.platform
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return
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script = """if 1:
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main_thread = threading.current_thread()
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def worker():
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