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gh-95196: Disable incorrect pickling of the C implemented classmethod descriptors (GH-96383)

This commit is contained in:
Serhiy Storchaka 2022-10-05 14:21:16 +03:00 committed by GitHub
parent f8cbd79d32
commit 77f0249308
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 20 additions and 1 deletions
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18
Lib/test/pickletester.py
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@ -2776,6 +2776,15 @@ class AbstractPickleTests:
unpickled = self.loads(self.dumps(method, proto))
self.assertEqual(method(obj), unpickled(obj))
descriptors = (
PyMethodsTest.__dict__['cheese'], # static method descriptor
PyMethodsTest.__dict__['wine'], # class method descriptor
)
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for descr in descriptors:
with self.subTest(proto=proto, descr=descr):
self.assertRaises(TypeError, self.dumps, descr, proto)
def test_c_methods(self):
global Subclass
class Subclass(tuple):
@ -2811,6 +2820,15 @@ class AbstractPickleTests:
unpickled = self.loads(self.dumps(method, proto))
self.assertEqual(method(*args), unpickled(*args))
descriptors = (
bytearray.__dict__['maketrans'], # built-in static method descriptor
dict.__dict__['fromkeys'], # built-in class method descriptor
)
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for descr in descriptors:
with self.subTest(proto=proto, descr=descr):
self.assertRaises(TypeError, self.dumps, descr, proto)
def test_compat_pickle(self):
tests = [
(range(1, 7), '__builtin__', 'xrange'),

1
Misc/NEWS.d/next/Core and Builtins/2022-08-29-13-06-58.gh-issue-95196.eGRR4b.rst Normal file
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@ -0,0 +1 @@
Disable incorrect pickling of the C implemented classmethod descriptors.

2
Objects/descrobject.c
View File

@ -776,7 +776,7 @@ PyTypeObject PyClassMethodDescr_Type = {
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
descr_methods, /* tp_methods */
0, /* tp_methods */
descr_members, /* tp_members */
method_getset, /* tp_getset */
0, /* tp_base */