1 files changed, 21 insertions, 1 deletions
diff --git a/contrib/tools/python3/src/Objects/enumobject.c b/contrib/tools/python3/src/Objects/enumobject.c
index bdd0ea5f397..98ece3f13fc 100644
--- a/contrib/tools/python3/src/Objects/enumobject.c
+++ b/contrib/tools/python3/src/Objects/enumobject.c
@@ -1,6 +1,7 @@
 /* enumerate object */
 
 #include "Python.h"
+#include "pycore_long.h"          // _PyLong_GetOne()
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 
 #include "clinic/enumobject.c.h"
@@ -116,7 +117,7 @@ enum_next_long(enumobject *en, PyObject* next_item)
     }
     next_index = en->en_longindex;
     assert(next_index != NULL);
-    stepped_up = PyNumber_Add(next_index, _PyLong_One);
+    stepped_up = PyNumber_Add(next_index, _PyLong_GetOne());
     if (stepped_up == NULL) {
         Py_DECREF(next_item);
         return NULL;
@@ -325,6 +326,24 @@ reversed_new_impl(PyTypeObject *type, PyObject *seq)
     return (PyObject *)ro;
 }
 
+static PyObject *
+reversed_vectorcall(PyObject *type, PyObject * const*args,
+                size_t nargsf, PyObject *kwnames)
+{
+    assert(PyType_Check(type));
+
+    if (!_PyArg_NoKwnames("reversed", kwnames)) {
+        return NULL;
+    }
+
+    Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+    if (!_PyArg_CheckPositional("reversed", nargs, 1, 1)) {
+        return NULL;
+    }
+
+    return reversed_new_impl((PyTypeObject *)type, args[0]);
+}
+
 static void
 reversed_dealloc(reversedobject *ro)
 {
@@ -456,4 +475,5 @@ PyTypeObject PyReversed_Type = {
     PyType_GenericAlloc,            /* tp_alloc */
     reversed_new,                   /* tp_new */
     PyObject_GC_Del,                /* tp_free */
+    .tp_vectorcall = (vectorcallfunc)reversed_vectorcall,
 };