1 files changed, 6 insertions, 0 deletions
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 782c51b..f87d58f 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -4100,6 +4100,12 @@ reduce_newobj(PyObject *obj, int proto)
     PyObject *newobj, *newargs, *state, *listitems, *dictitems;
     PyObject *result;
 
+    if (Py_TYPE(obj)->tp_new == NULL) {
+        PyErr_Format(PyExc_TypeError,
+                     "can't pickle %s objects",
+                     Py_TYPE(obj)->tp_name);
+        return NULL;
+    }
     if (_PyObject_GetNewArguments(obj, &args, &kwargs) < 0)
         return NULL;