An assertion failed in _Py_read() while running test_signal on AMD64 Snow Leop 3.x:

http://buildbot.python.org/all/builders/AMD64%20Snow%20Leop%203.x/builds/2779/steps/test/logs/stdio


[321/393/1] test_signal
Assertion failed: (errno == EINTR && PyErr_Occurred()), function _Py_read, file Python/fileutils.c, line 1181.
Fatal Python error: Aborted

Current thread 0x00007fff71296cc0 (most recent call first):
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/subprocess.py", line 1407 in _execute_child
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/subprocess.py", line 855 in __init__
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/test_signal.py", line 126 in run_test
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/test_signal.py", line 180 in test_main
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/case.py", line 577 in run
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/case.py", line 625 in __call__
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/suite.py", line 122 in run
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/suite.py", line 122 in run
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/unittest/runner.py", line 176 in run
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/support/__init__.py", line 1772 in _run_suite
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/support/__init__.py", line 1806 in run_unittest
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/test_signal.py", line 1123 in test_main
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/regrtest.py", line 1284 in runtest_inner
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/regrtest.py", line 967 in runtest
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/regrtest.py", line 532 in main
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/regrtest.py", line 1568 in main_in_temp_cwd
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/test/regrtest.py", line 1593 in <module>
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/runpy.py", line 85 in _run_code
  File "/Users/buildbot/buildarea/3.x.murray-snowleopard/build/Lib/runpy.py", line 170 in _run_module_as_main