Add Tim's gc boom test to the test suite.
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index 95cea29..f190fa4 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -253,6 +253,24 @@
v = {1: v, 2: Ouch()}
gc.disable()
+class C:
+ def __getattr__(self, attr):
+ del self.attr
+ raise AttributeError
+
+def test_boom():
+ a = C()
+ b = C()
+ a.attr = b
+ b.attr = a
+
+ gc.collect()
+ del a, b
+ # the collection will invoke the getattr and decref one of the
+ # object. so they are deallocated without being reported as
+ # part of a cycle.
+ expect(gc.collect(), 0, "boom")
+
def test_all():
gc.collect() # Delete 2nd generation garbage
run_test("lists", test_list)
@@ -271,6 +289,7 @@
run_test("__del__ (new class)", test_del_newclass)
run_test("saveall", test_saveall)
run_test("trashcan", test_trashcan)
+ run_test("boom", test_boom)
def test():
if verbose: