Make built-in methods picklable through the reduce protocol.
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index ca21a68..55a7d6a 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -159,6 +159,26 @@
}
}
+static PyObject *
+meth_reduce(PyCFunctionObject *m)
+{
+ PyObject *builtins;
+ PyObject *getattr;
+ _Py_IDENTIFIER(getattr);
+
+ if (m->m_self == NULL || PyModule_Check(m->m_self))
+ return PyUnicode_FromString(m->m_ml->ml_name);
+
+ builtins = PyEval_GetBuiltins();
+ getattr = _PyDict_GetItemId(builtins, &PyId_getattr);
+ return Py_BuildValue("O(Os)", getattr, m->m_self, m->m_ml->ml_name);
+}
+
+static PyMethodDef meth_methods[] = {
+ {"__reduce__", (PyCFunction)meth_reduce, METH_NOARGS, NULL},
+ {NULL, NULL}
+};
+
/*
* finds the docstring's introspection signature.
* if present, returns a pointer pointing to the first '('.
@@ -394,7 +414,7 @@
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
- 0, /* tp_methods */
+ meth_methods, /* tp_methods */
meth_members, /* tp_members */
meth_getsets, /* tp_getset */
0, /* tp_base */