bpo-31234: test_threading: fix ref cycle (#3150)

test_bare_raise_in_brand_new_thread() now explicitly breaks a reference cycle to not leak a dangling thread.
python · Aug 18, 2017 · 3d284c0 · 3d284c0
1 parent a32e405
commit 3d284c0
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
@@ -1069,6 +1069,8 @@ def run(self):
         thread.join()
         self.assertIsNotNone(thread.exc)
         self.assertIsInstance(thread.exc, RuntimeError)
+        # explicitly break the reference cycle to not leak a dangling thread
+        thread.exc = None
 
 class TimerTests(BaseTestCase):