1*05b00f60SXin Li /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ 2*05b00f60SXin Li /* 3*05b00f60SXin Li * Copyright (c) 1993, 1994, 1995, 1996, 1997 4*05b00f60SXin Li * The Regents of the University of California. All rights reserved. 5*05b00f60SXin Li * 6*05b00f60SXin Li * Redistribution and use in source and binary forms, with or without 7*05b00f60SXin Li * modification, are permitted provided that the following conditions 8*05b00f60SXin Li * are met: 9*05b00f60SXin Li * 1. Redistributions of source code must retain the above copyright 10*05b00f60SXin Li * notice, this list of conditions and the following disclaimer. 11*05b00f60SXin Li * 2. Redistributions in binary form must reproduce the above copyright 12*05b00f60SXin Li * notice, this list of conditions and the following disclaimer in the 13*05b00f60SXin Li * documentation and/or other materials provided with the distribution. 14*05b00f60SXin Li * 3. All advertising materials mentioning features or use of this software 15*05b00f60SXin Li * must display the following acknowledgement: 16*05b00f60SXin Li * This product includes software developed by the Computer Systems 17*05b00f60SXin Li * Engineering Group at Lawrence Berkeley Laboratory. 18*05b00f60SXin Li * 4. Neither the name of the University nor of the Laboratory may be used 19*05b00f60SXin Li * to endorse or promote products derived from this software without 20*05b00f60SXin Li * specific prior written permission. 21*05b00f60SXin Li * 22*05b00f60SXin Li * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23*05b00f60SXin Li * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24*05b00f60SXin Li * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25*05b00f60SXin Li * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26*05b00f60SXin Li * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27*05b00f60SXin Li * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28*05b00f60SXin Li * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29*05b00f60SXin Li * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30*05b00f60SXin Li * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31*05b00f60SXin Li * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32*05b00f60SXin Li * SUCH DAMAGE. 33*05b00f60SXin Li */ 34*05b00f60SXin Li 35*05b00f60SXin Li #ifndef varattrs_h 36*05b00f60SXin Li #define varattrs_h 37*05b00f60SXin Li 38*05b00f60SXin Li #include "compiler-tests.h" 39*05b00f60SXin Li 40*05b00f60SXin Li /* 41*05b00f60SXin Li * Attributes to apply to variables, using various compiler-specific 42*05b00f60SXin Li * extensions. 43*05b00f60SXin Li */ 44*05b00f60SXin Li 45*05b00f60SXin Li #if __has_attribute(unused) \ 46*05b00f60SXin Li || ND_IS_AT_LEAST_GNUC_VERSION(2,0) 47*05b00f60SXin Li /* 48*05b00f60SXin Li * Compiler with support for __attribute__((unused)), or GCC 2.0 and 49*05b00f60SXin Li * later, so it supports __attribute__((unused)). 50*05b00f60SXin Li */ 51*05b00f60SXin Li #define _U_ __attribute__((unused)) 52*05b00f60SXin Li #else 53*05b00f60SXin Li /* 54*05b00f60SXin Li * We don't know of any way to mark a variable as unused. 55*05b00f60SXin Li */ 56*05b00f60SXin Li #define _U_ 57*05b00f60SXin Li #endif 58*05b00f60SXin Li 59*05b00f60SXin Li #endif 60