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Diffstat (limited to 'Lib/test/test_builtin.py')
| -rw-r--r-- | Lib/test/test_builtin.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py index aabf0ab5a9..f31ab72c02 100644 --- a/Lib/test/test_builtin.py +++ b/Lib/test/test_builtin.py @@ -799,6 +799,16 @@ class BuiltinTest(unittest.TestCase): f2 = filter(filter_char, "abcdeabcde") self.check_iter_pickle(f1, list(f2), proto) + def test_filter_dealloc(self): + # Tests recursive deallocation of nested filter objects using the + # thrashcan mechanism. See gh-102356 for more details. + max_iters = 1000000 + i = filter(bool, range(max_iters)) + for _ in range(max_iters): + i = filter(bool, i) + del i + gc.collect() + def test_getattr(self): self.assertTrue(getattr(sys, 'stdout') is sys.stdout) self.assertRaises(TypeError, getattr, sys, 1) |