1 /* 2 * Copyright (c) 2015-2020 François Tigeot <ftigeot@wolfpond.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef LINUX_BUG_H 28 #define LINUX_BUG_H 29 30 #include <asm/bug.h> 31 #include <linux/compiler.h> 32 33 /* 34 * Some conditions result in a "expression in static assertion is not constant" 35 * compilation error; just disable the check for now. 36 */ 37 #define BUILD_BUG_ON(condition) 38 39 #define BUILD_BUG_ON_NOT_POWER_OF_2(n) \ 40 CTASSERT(((n) != 0) && (powerof2((n)))) 41 42 #define BUILD_BUG() BUILD_BUG_ON(1) 43 44 #define BUILD_BUG_ON_MSG(cond, msg) do { } while (0) 45 46 #define BUILD_BUG_ON_INVALID(expr) ((void)(expr)) 47 48 #define BUILD_BUG_ON_ZERO(x) 0 49 50 #endif /* LINUX_BUG_H */ 51