(* * Copyright (c) 2013 - present Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. *) open! Utils (** Simple check for dead code. *) val callback_check_dead_code: Callbacks.proc_callback_t