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author | Serhiy Storchaka <storchaka@gmail.com> | 2016-01-19 14:48:42 +0200 |
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committer | Serhiy Storchaka <storchaka@gmail.com> | 2016-01-19 14:48:42 +0200 |
commit | 2a4294cbd7d2eb963f6d7c702ea8f1628be2d41d (patch) | |
tree | b8e10a249a55e7a3126867c3bd2683e4cb5fb81b /Lib/test/test_ordered_dict.py | |
parent | d12188e25b201cb7adf634f0ec9d93ca6921ad72 (diff) | |
parent | fba06ee29d68b1bf06061860161bee06e2b64793 (diff) | |
download | cpython-2a4294cbd7d2eb963f6d7c702ea8f1628be2d41d.tar.gz |
Issue #25935: Garbage collector now breaks reference loops with OrderedDict.
Diffstat (limited to 'Lib/test/test_ordered_dict.py')
-rw-r--r-- | Lib/test/test_ordered_dict.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Lib/test/test_ordered_dict.py b/Lib/test/test_ordered_dict.py index 9f9922cb71..633e90919b 100644 --- a/Lib/test/test_ordered_dict.py +++ b/Lib/test/test_ordered_dict.py @@ -1,10 +1,12 @@ import contextlib import copy +import gc import pickle from random import randrange, shuffle import struct import sys import unittest +import weakref from collections.abc import MutableMapping from test import mapping_tests, support @@ -593,6 +595,17 @@ class OrderedDictTests: dict.update(od, [('spam', 1)]) self.assertNotIn('NULL', repr(od)) + def test_reference_loop(self): + # Issue 25935 + OrderedDict = self.OrderedDict + class A: + od = OrderedDict() + A.od[A] = None + r = weakref.ref(A) + del A + gc.collect() + self.assertIsNone(r()) + class PurePythonOrderedDictTests(OrderedDictTests, unittest.TestCase): |