Avoid cycle when testing weakref.

markshannon · markshannon · commit 0dedf7849048 · 2022-08-16T09:54:20.000+01:00
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
@@ -607,6 +607,7 @@ class C2(_testcapi.HeapCTypeWithManagedDict, _testcapi.HeapCTypeWithManagedWeakr
             self.assertEqual(ref(), inst)
             inst.spam = inst
             del inst
+            ref = weakref.ref(cls())
             self.assertIs(ref(), None)
 
     def test_heaptype_with_buffer(self):
