Issue #16148: implemented PEP 424
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index bf9259f..25c2326 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2651,7 +2651,7 @@
     }
 
     /* For iterator version, create a string object and resize as needed */
-    size = _PyObject_LengthHint(x, 64);
+    size = PyObject_LengthHint(x, 64);
     if (size == -1 && PyErr_Occurred())
         return NULL;
     /* Allocate an extra byte to prevent PyBytes_FromStringAndSize() from