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gh-138008: Fix segfaults in _ctypes due to invalid argtypes (GH-138285)

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Signed-off-by: Nguyen Viet Dung <29406816+magnified103@users.noreply.github.com>
Signed-off-by: Nguyen Viet Dung <dung@ekluster.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Yongzi Li <204532581+Yzi-Li@users.noreply.github.com>
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Dung Nguyen 2025-09-10 19:01:19 +07:00 • committed by GitHub
parent d54b1091d4
commit 1ce05537a3
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3 changed files with 49 additions and 11 deletions
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26
Lib/test/test_ctypes/test_prototypes.py
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@ -72,6 +72,32 @@ def test_paramflags(self):
self.assertEqual(func(None), None)
self.assertEqual(func(input=None), None)
def test_invalid_paramflags(self):
proto = CFUNCTYPE(c_int, c_char_p)
with self.assertRaises(ValueError):
func = proto(("myprintf", testdll), ((1, "fmt"), (1, "arg1")))
def test_invalid_setattr_argtypes(self):
proto = CFUNCTYPE(c_int, c_char_p)
func = proto(("myprintf", testdll), ((1, "fmt"),))
with self.assertRaisesRegex(TypeError, "_argtypes_ must be a sequence of types"):
func.argtypes = 123
self.assertEqual(func.argtypes, (c_char_p,))
with self.assertRaisesRegex(ValueError, "paramflags must have the same length as argtypes"):
func.argtypes = (c_char_p, c_int)
self.assertEqual(func.argtypes, (c_char_p,))
def test_paramflags_outarg(self):
proto = CFUNCTYPE(c_int, c_char_p, c_int)
with self.assertRaisesRegex(TypeError, "must be a pointer type"):
func = proto(("myprintf", testdll), ((1, "fmt"), (2, "out")))
proto = CFUNCTYPE(c_int, c_char_p, c_void_p)
func = proto(("myprintf", testdll), ((1, "fmt"), (2, "out")))
with self.assertRaisesRegex(TypeError, "must be a pointer type"):
func.argtypes = (c_char_p, c_int)
def test_int_pointer_arg(self):
func = testdll._testfunc_p_p