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bpo-36379: __ipow__ must be a ternaryfunc, not a binaryfunc (GH-13546)

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If a type's __ipow__ method was implemented in C, attempting to use
the *modulo* parameter would cause crashes.


https://bugs.python.org/issue36379
This commit is contained in:
Zackery Spytz 2019-05-31 03:46:36 -06:00 • committed by Miss Islington (bot)
parent c7f7069e77
commit c7f803b08e
4 changed files with 36 additions and 1 deletions
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7
Lib/test/test_capi.py
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@ -184,6 +184,13 @@ class CAPITest(unittest.TestCase):
o @= m1
self.assertEqual(o, ("matmul", 42, m1))
def test_c_type_with_ipow(self):
# When the __ipow__ method of a type was implemented in C, using the
# modulo param would cause segfaults.
o = _testcapi.ipowType()
self.assertEqual(o.__ipow__(1), (1, None))
self.assertEqual(o.__ipow__(2, 2), (2, 2))
def test_return_null_without_error(self):
# Issue #23571: A function must not return NULL without setting an
# error