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gh-96538: Fix refleak in _bisectmodule.c #96619

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Merged
merged 2 commits into from
Sep 6, 2022
Merged

gh-96538: Fix refleak in _bisectmodule.c #96619

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2a82cdd
Fix refleak and add tests
sweeneyde Sep 6, 2022
65cd21f
Merge branch 'main' into bisect_refleak
sweeneyde Sep 6, 2022
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28 changes: 28 additions & 0 deletions Lib/test/test_bisect.py
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Original file line number Diff line number Diff line change
Expand Up @@ -263,6 +263,34 @@ def test_insort_keynotNone(self):
for f in (self.module.insort_left, self.module.insort_right):
self.assertRaises(TypeError, f, x, y, key = "b")

def test_lt_returns_non_bool(self):
class A:
def __init__(self, val):
self.val = val
def __lt__(self, other):
return "nonempty" if self.val < other.val else ""

data = [A(i) for i in range(100)]
i1 = self.module.bisect_left(data, A(33))
i2 = self.module.bisect_right(data, A(33))
self.assertEqual(i1, 33)
self.assertEqual(i2, 34)

def test_lt_returns_notimplemented(self):
class A:
def __init__(self, val):
self.val = val
def __lt__(self, other):
return NotImplemented
def __gt__(self, other):
return self.val > other.val

data = [A(i) for i in range(100)]
i1 = self.module.bisect_left(data, A(40))
i2 = self.module.bisect_right(data, A(40))
self.assertEqual(i1, 40)
self.assertEqual(i2, 41)

class TestBisectPython(TestBisect, unittest.TestCase):
module = py_bisect

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2 changes: 2 additions & 0 deletions Modules/_bisectmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,7 @@ internal_bisect_right(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t
}
else {
res = PyObject_IsTrue(res_obj);
Py_DECREF(res_obj);
}
}
else {
Expand Down Expand Up @@ -299,6 +300,7 @@ internal_bisect_left(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t h
}
else {
res = PyObject_IsTrue(res_obj);
Py_DECREF(res_obj);
}
}
else {
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