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Issue #25395: Fixed crash when highly nested OrderedDict structures were

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garbage collected.
This commit is contained in:
Serhiy Storchaka 2015-11-01 16:12:34 +02:00
parent 964ec8b2f3
commit 14eefe353e
3 changed files with 41 additions and 3 deletions
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24
Lib/test/test_collections.py
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@ -2025,6 +2025,30 @@ class OrderedDictTests:
items = [('a', 1), ('c', 3), ('b', 2)]
self.assertEqual(list(MyOD(items).items()), items)
def test_highly_nested(self):
# Issue 25395: crashes during garbage collection
OrderedDict = self.module.OrderedDict
obj = None
for _ in range(1000):
obj = OrderedDict([(None, obj)])
del obj
support.gc_collect()
def test_highly_nested_subclass(self):
# Issue 25395: crashes during garbage collection
OrderedDict = self.module.OrderedDict
deleted = []
class MyOD(OrderedDict):
def __del__(self):
deleted.append(self.i)
obj = None
for i in range(100):
obj = MyOD([(None, obj)])
obj.i = i
del obj
support.gc_collect()
self.assertEqual(deleted, list(reversed(range(100))))
class PurePythonOrderedDictTests(OrderedDictTests, unittest.TestCase):