[Python-checkins] bpo-41052: Opt out serialization/deserialization for _random.Random (GH-21002)
Dong-hee Na
webhook-mailer at python.org
Sun Jun 21 05:45:06 EDT 2020
https://github.com/python/cpython/commit/6989af0bc7ea1e9a1acea16794e6f723d7b44110
commit: 6989af0bc7ea1e9a1acea16794e6f723d7b44110
branch: master
author: Dong-hee Na <donghee.na92 at gmail.com>
committer: GitHub <noreply at github.com>
date: 2020-06-21T18:44:58+09:00
summary:
bpo-41052: Opt out serialization/deserialization for _random.Random (GH-21002)
files:
A Misc/NEWS.d/next/Core and Builtins/2020-06-20-22-46-18.bpo-41052.46MPeF.rst
M Lib/test/test_random.py
M Modules/_randommodule.c
M Modules/clinic/_randommodule.c.h
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py
index a3710f4aa48a6..a80e71e67e4c6 100644
--- a/Lib/test/test_random.py
+++ b/Lib/test/test_random.py
@@ -5,6 +5,8 @@
import time
import pickle
import warnings
+import test.support
+
from functools import partial
from math import log, exp, pi, fsum, sin, factorial
from test import support
@@ -372,6 +374,14 @@ def test_pickling(self):
restoredseq = [newgen.random() for i in range(10)]
self.assertEqual(origseq, restoredseq)
+ @test.support.cpython_only
+ def test_bug_41052(self):
+ # _random.Random should not be allowed to serialization
+ import _random
+ for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+ r = _random.Random()
+ self.assertRaises(TypeError, pickle.dumps, r, proto)
+
def test_bug_1727780(self):
# verify that version-2-pickles can be loaded
# fine, whether they are created on 32-bit or 64-bit
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-06-20-22-46-18.bpo-41052.46MPeF.rst b/Misc/NEWS.d/next/Core and Builtins/2020-06-20-22-46-18.bpo-41052.46MPeF.rst
new file mode 100644
index 0000000000000..82969bf4a7894
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2020-06-20-22-46-18.bpo-41052.46MPeF.rst
@@ -0,0 +1 @@
+Opt out serialization/deserialization for _random.Random
diff --git a/Modules/_randommodule.c b/Modules/_randommodule.c
index 3e3139e4990cc..b8bc0449c1b1b 100644
--- a/Modules/_randommodule.c
+++ b/Modules/_randommodule.c
@@ -535,12 +535,30 @@ random_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
return (PyObject *)self;
}
+
+/*[clinic input]
+
+_random.Random.__reduce__
+
+[clinic start generated code]*/
+
+static PyObject *
+_random_Random___reduce___impl(RandomObject *self)
+/*[clinic end generated code: output=ddea0dcdb60ffd6d input=bd38ec35fd157e0f]*/
+{
+ PyErr_Format(PyExc_TypeError,
+ "cannot pickle %s object",
+ Py_TYPE(self)->tp_name);
+ return NULL;
+}
+
static PyMethodDef random_methods[] = {
_RANDOM_RANDOM_RANDOM_METHODDEF
_RANDOM_RANDOM_SEED_METHODDEF
_RANDOM_RANDOM_GETSTATE_METHODDEF
_RANDOM_RANDOM_SETSTATE_METHODDEF
_RANDOM_RANDOM_GETRANDBITS_METHODDEF
+ _RANDOM_RANDOM___REDUCE___METHODDEF
{NULL, NULL} /* sentinel */
};
diff --git a/Modules/clinic/_randommodule.c.h b/Modules/clinic/_randommodule.c.h
index b3cd435b6f204..3322a370288c3 100644
--- a/Modules/clinic/_randommodule.c.h
+++ b/Modules/clinic/_randommodule.c.h
@@ -109,4 +109,21 @@ _random_Random_getrandbits(RandomObject *self, PyObject *arg)
exit:
return return_value;
}
-/*[clinic end generated code: output=cc8a23b2757dc6ba input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_random_Random___reduce____doc__,
+"__reduce__($self, /)\n"
+"--\n"
+"\n");
+
+#define _RANDOM_RANDOM___REDUCE___METHODDEF \
+ {"__reduce__", (PyCFunction)_random_Random___reduce__, METH_NOARGS, _random_Random___reduce____doc__},
+
+static PyObject *
+_random_Random___reduce___impl(RandomObject *self);
+
+static PyObject *
+_random_Random___reduce__(RandomObject *self, PyObject *Py_UNUSED(ignored))
+{
+ return _random_Random___reduce___impl(self);
+}
+/*[clinic end generated code: output=450f0961c2c92389 input=a9049054013a1b77]*/
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