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authorNed Deily <nad@acm.org>2011-05-28 07:19:56 (GMT)
committerNed Deily <nad@acm.org>2011-05-28 07:19:56 (GMT)
commit9a7c524dc613595e0d88b3e22b0e49b69467ffc4 (patch)
tree69f59204644d9feb72596d19a5ba508169803aca /Lib/test/test_threading.py
parent0a5dad9ef1e3203f3ab7a15ffe051299081ef672 (diff)
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Issue #9670: Increase the default stack size for secondary threads on
Mac OS X and FreeBSD to reduce the chances of a crash instead of a "maximum recursion depth" RuntimeError exception. (patch by Ronald Oussoren)
Diffstat (limited to 'Lib/test/test_threading.py')
-rw-r--r--Lib/test/test_threading.py31
1 files changed, 31 insertions, 0 deletions
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index f977a7f..63ef7b9 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -673,6 +673,37 @@ class SemaphoreTests(lock_tests.SemaphoreTests):
class BoundedSemaphoreTests(lock_tests.BoundedSemaphoreTests):
semtype = staticmethod(threading.BoundedSemaphore)
+ @unittest.skipUnless(sys.platform == 'darwin', 'test macosx problem')
+ def test_recursion_limit(self):
+ # Issue 9670
+ # test that excessive recursion within a non-main thread causes
+ # an exception rather than crashing the interpreter on platforms
+ # like Mac OS X or FreeBSD which have small default stack sizes
+ # for threads
+ script = """if True:
+ import threading
+
+ def recurse():
+ return recurse()
+
+ def outer():
+ try:
+ recurse()
+ except RuntimeError:
+ pass
+
+ w = threading.Thread(target=outer)
+ w.start()
+ w.join()
+ print('end of main thread')
+ """
+ expected_output = "end of main thread\n"
+ p = subprocess.Popen([sys.executable, "-c", script],
+ stdout=subprocess.PIPE)
+ stdout, stderr = p.communicate()
+ data = stdout.decode().replace('\r', '')
+ self.assertEqual(p.returncode, 0, "Unexpected error")
+ self.assertEqual(data, expected_output)
def test_main():
test.support.run_unittest(LockTests, RLockTests, EventTests,