1 /* Copyright (C) 1991,1992,1994-2001,2003,2004 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <http://www.gnu.org/licenses/>. */ 17 18 /* 19 * ISO C99 Standard: 7.2 Diagnostics <assert.h> 20 */ 21 22 #ifdef _ASSERT_H 23 24 # undef _ASSERT_H 25 # undef assert 26 # undef __ASSERT_VOID_CAST 27 28 #endif /* assert.h */ 29 30 #define _ASSERT_H 1 31 #include <features.h> 32 33 #if defined __cplusplus && __GNUC_PREREQ (2,95) 34 # define __ASSERT_VOID_CAST static_cast<void> 35 #else 36 # define __ASSERT_VOID_CAST (void) 37 #endif 38 39 /* void assert (int expression); 40 41 If NDEBUG is defined, do nothing. 42 If not, and EXPRESSION is zero, print an error message and abort. */ 43 44 #ifdef NDEBUG 45 46 # define assert(expr) (__ASSERT_VOID_CAST (0)) 47 48 #else /* Not NDEBUG. */ 49 50 __BEGIN_DECLS 51 52 /* This prints an "Assertion failed" message and aborts. */ 53 extern void __assert(const char *, const char *, unsigned int, const char *) 54 __THROW __attribute__ ((__noreturn__)); 55 libc_hidden_proto(__assert) 56 57 __END_DECLS 58 59 # define assert(expr) \ 60 (__ASSERT_VOID_CAST ((expr) ? 0 : \ 61 (__assert (__STRING(expr), __FILE__, __LINE__, __ASSERT_FUNCTION), 0))) 62 63 /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' 64 which contains the name of the function currently being defined. 65 This is broken in G++ before version 2.6. 66 C9x has a similar variable called __func__, but prefer the GCC one since 67 it demangles C++ function names. */ 68 # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4) 69 # define __ASSERT_FUNCTION __PRETTY_FUNCTION__ 70 # else 71 # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L 72 # define __ASSERT_FUNCTION __func__ 73 # else 74 # define __ASSERT_FUNCTION ((const char *) 0) 75 # endif 76 # endif 77 78 #endif /* NDEBUG. */ 79