Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside

__getattr__.  Original patch by Antoine Pitrou.
This commit is contained in:
Serhiy Storchaka 2015-11-25 18:35:15 +02:00
commit 6a50e79130
3 changed files with 23 additions and 0 deletions

View file

@ -5085,6 +5085,23 @@ class PicklingTests(unittest.TestCase):
objcopy2 = deepcopy(objcopy)
self._assert_is_copy(obj, objcopy2)
def test_issue24097(self):
# Slot name is freed inside __getattr__ and is later used.
class S(str): # Not interned
pass
class A:
__slotnames__ = [S('spam')]
def __getattr__(self, attr):
if attr == 'spam':
A.__slotnames__[:] = [S('spam')]
return 42
else:
raise AttributeError
import copyreg
expected = (copyreg.__newobj__, (A,), (None, {'spam': 42}), None, None)
self.assertEqual(A().__reduce__(2), expected) # Shouldn't crash
class SharedKeyTests(unittest.TestCase):