/* $NetBSD: cdefs.h,v 1.2.6.1 2024/02/29 11:39:19 martin Exp $ */ /* cdefs.h Standard C definitions... */ /* * Copyright (c) 1995 RadioMail Corporation. All rights reserved. * Copyright (C) 2004-2022 Internet Systems Consortium, Inc. ("ISC") * Copyright (c) 1996-2003 by Internet Software Consortium * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Internet Systems Consortium, Inc. * PO Box 360 * Newmarket, NH 03857 USA * * https://www.isc.org/ * * This software was written for RadioMail Corporation by Ted Lemon * under a contract with Vixie Enterprises. Further modifications have * been made for Internet Systems Consortium under a contract * with Vixie Laboratories. */ #if !defined (__ISC_DHCP_CDEFS_H__) #define __ISC_DHCP_CDEFS_H__ /* Delete attributes if not gcc or not the right version of gcc. */ #if !defined(__GNUC__) || __GNUC__ < 2 || \ (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || defined (darwin) #define __attribute__(x) #endif /* The following macro handles the case of unwanted return values. In * GCC one can specify an attribute for a function to generate a warning * if the return value of the function is ignored and one can't dispose of * the warning by the use of void. In conjunction with the use of -Werror * these warnings prohibit the compilation of the package. This macro * allows us to assign the return value to a variable and then ignore it. * * __attribute__((unused)) is added for avoiding another warning about set, * but unused variable. This is produced by unused-but-set-variable switch * that is enabled by default in gcc 4.6. */ #if !defined(__GNUC__) || (__GNUC__ < 4) #define IGNORE_RET(x) (void) x #else #define IGNORE_RET(x) \ do { \ int __attribute__((unused)) ignore_return ;\ ignore_return = x; \ } while (0) #endif /* This macro is defined to avoid unused-but-set-variable warning * that is enabled in gcc 4.6 */ #define IGNORE_UNUSED(x) { x = x; } #endif /* __ISC_DHCP_CDEFS_H__ */