* Exim - an Internet mail transport agent *
*************************************************/
+/* Copyright (c) The Exim Maintainers 2021 - 2022 */
/* Copyright (c) University of Cambridge 1995 - 2015 */
-/* Copyright (c) The Exim Maintainers 2021 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Functions for maintaining binary balanced trees and some associated
functions as well. */