Hello,

the test_stack_overflow failed on OpenBSD.

Don't hesitate if you need more information.

Details:
$ ./python Lib/test/test_faulthandler.py 
test_disable (__main__.FaultHandlerTests) ... ok
test_dump_traceback (__main__.FaultHandlerTests) ... ok
test_dump_traceback_file (__main__.FaultHandlerTests) ... ok
test_dump_traceback_threads (__main__.FaultHandlerTests) ... ok
test_dump_traceback_threads_file (__main__.FaultHandlerTests) ... ok
test_dump_tracebacks_later (__main__.FaultHandlerTests) ... ok
test_dump_tracebacks_later_cancel (__main__.FaultHandlerTests) ... ok
test_dump_tracebacks_later_file (__main__.FaultHandlerTests) ... ok
test_dump_tracebacks_later_repeat (__main__.FaultHandlerTests) ... ok
test_dump_tracebacks_later_twice (__main__.FaultHandlerTests) ... ok
test_enable_file (__main__.FaultHandlerTests) ... ok
test_enable_single_thread (__main__.FaultHandlerTests) ... ok
test_fatal_error (__main__.FaultHandlerTests) ... ok
test_gil_released (__main__.FaultHandlerTests) ... ok
test_is_enabled (__main__.FaultHandlerTests) ... ok
test_read_null (__main__.FaultHandlerTests) ... ok
test_register (__main__.FaultHandlerTests) ... ok
test_register_chain (__main__.FaultHandlerTests) ... ok
test_register_file (__main__.FaultHandlerTests) ... ok
test_register_threads (__main__.FaultHandlerTests) ... ok
test_sigabrt (__main__.FaultHandlerTests) ... ok
test_sigbus (__main__.FaultHandlerTests) ... ok
test_sigfpe (__main__.FaultHandlerTests) ... ok
test_sigill (__main__.FaultHandlerTests) ... ok
test_sigsegv (__main__.FaultHandlerTests) ... ok
test_stack_overflow (__main__.FaultHandlerTests) ... FAIL
test_unregister (__main__.FaultHandlerTests) ... ok

======================================================================
FAIL: test_stack_overflow (__main__.FaultHandlerTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_faulthandler.py", line 187, in test_stack_overflow
    other_regex='unable to raise a stack overflow')
  File "Lib/test/test_faulthandler.py", line 105, in check_fatal_error
    self.assertRegex(output, regex)
AssertionError: Regex didn't match: '^Fatal Python error: (?:Segmentation fault|Bus error)\n\nCurrent\\ thread\\ XXX:\n  File "<string>", line 3 in <module>$|unable to raise a stack overflow' not found in ''

----------------------------------------------------------------------
Ran 27 tests in 16.938s

FAILED (failures=1)
Traceback (most recent call last):
  File "Lib/test/test_faulthandler.py", line 551, in <module>
    test_main()
  File "Lib/test/test_faulthandler.py", line 548, in test_main
    support.run_unittest(FaultHandlerTests)
  File "/home/remi/dev/cpython_test/Lib/test/support.py", line 1328, in run_unittest
    _run_suite(suite)
  File "/home/remi/dev/cpython_test/Lib/test/support.py", line 1303, in _run_suite
    raise TestFailed(err)
test.support.TestFailed: Traceback (most recent call last):
  File "Lib/test/test_faulthandler.py", line 187, in test_stack_overflow
    other_regex='unable to raise a stack overflow')
  File "Lib/test/test_faulthandler.py", line 105, in check_fatal_error
    self.assertRegex(output, regex)
AssertionError: Regex didn't match: '^Fatal Python error: (?:Segmentation fault|Bus error)\n\nCurrent\\ thread\\ XXX:\n  File "<string>", line 3 in <module>$|unable to raise a stack overflow' not found in ''


Thanks a lot,

Remi.