1 /* 2 * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef CASSERT_H 8 #define CASSERT_H 9 10 #include <cdefs.h> 11 12 /******************************************************************************* 13 * Macro to flag a compile time assertion. It uses the preprocessor to generate 14 * an invalid C construct if 'cond' evaluates to false. 15 * The following compilation error is triggered if the assertion fails: 16 * "error: size of array 'msg' is negative" 17 * The 'unused' attribute ensures that the unused typedef does not emit a 18 * compiler warning. 19 ******************************************************************************/ 20 #define CASSERT(cond, msg) \ 21 typedef char msg[(cond) ? 1 : -1] __unused 22 23 #endif /* CASSERT_H */ 24