This has started showing up since r85073.

======================================================================
ERROR: test_CTRL_BREAK_EVENT (test.test_os.Win32KillTests)
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Traceback (most recent call last):
  File "D:\cygwin\home\db3l\buildarea\3.x.bolen-windows\build\lib\test\test_os.py", line 1068, in test_CTRL_BREAK_EVENT
    self._kill_with_event(signal.CTRL_BREAK_EVENT, "CTRL_BREAK_EVENT")
  File "D:\cygwin\home\db3l\buildarea\3.x.bolen-windows\build\lib\test\test_os.py", line 1039, in _kill_with_event
    os.kill(proc.pid, event)
WindowsError: [Error 5] Access is denied

http://www.python.org/dev/buildbot/builders/x86%20XP-4%203.x

I cannot reproduce this in my environment...

E:\python-dev\py3k>py3k -m test.regrtest test_os
[1/1] test_os
[33503 refs]
1 test OK.
[85140 refs]

I created the patch to fix this issue. WINFUNCTYPE is not member
of ctypes.wintypes, but ctypes.

I just checked in the importing changes to r85109 and r85110 (I saw your branch checkins happening at the same time, sorry).

Do you think we need the other parts of that patch? It seems like the only real issue here was the importing.

Other parts are needed for my environment. If machine
is really slow, there is possibility of subprocess
being killed before execution reaches "wintypes.WINFUNCTYPE"
line.

In that case, the patch seems alright to me.

Thank you. Committed in r85315(py3k), r85318(release27-maint).

I modified the patch slightly to avoid potential hang.