Class C

numpy/core/tests/test_multiarray.py:1083–1087

    def test_false_len_sequence(self):
        # gh-7264, segfault for this example
        class C:
            def __getitem__(self, i):
                raise IndexError
            def __len__(self):
                return 42

        a = np.array(C()) # segfault?
        assert_equal(len(a), 0)