Issue #16148: implemented PEP 424
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 6e0d094..4cc34b5 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -826,7 +826,7 @@
     iternext = *it->ob_type->tp_iternext;
 
     /* Guess a result list size. */
-    n = _PyObject_LengthHint(b, 8);
+    n = PyObject_LengthHint(b, 8);
     if (n == -1) {
         Py_DECREF(it);
         return NULL;