The C and C++ Include Header Files
/usr/include/assert.h
$ cat -n /usr/include/assert.h 1 /* Copyright (C) 1991-2022 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
. */ 17 18 /* 19 * ISO C99 Standard: 7.2 Diagnostics
20 */ 21 22 #ifdef _ASSERT_H 23 24 # undef _ASSERT_H 25 # undef assert 26 # undef __ASSERT_VOID_CAST 27 28 # ifdef __USE_GNU 29 # undef assert_perror 30 # endif 31 32 #endif /* assert.h */ 33 34 #define _ASSERT_H 1 35 #include
36 37 #if defined __cplusplus && __GNUC_PREREQ (2,95) 38 # define __ASSERT_VOID_CAST static_cast
39 #else 40 # define __ASSERT_VOID_CAST (void) 41 #endif 42 43 /* void assert (int expression); 44 45 If NDEBUG is defined, do nothing. 46 If not, and EXPRESSION is zero, print an error message and abort. */ 47 48 #ifdef NDEBUG 49 50 # define assert(expr) (__ASSERT_VOID_CAST (0)) 51 52 /* void assert_perror (int errnum); 53 54 If NDEBUG is defined, do nothing. If not, and ERRNUM is not zero, print an 55 error message with the error text for ERRNUM and abort. 56 (This is a GNU extension.) */ 57 58 # ifdef __USE_GNU 59 # define assert_perror(errnum) (__ASSERT_VOID_CAST (0)) 60 # endif 61 62 #else /* Not NDEBUG. */ 63 64 #ifndef _ASSERT_H_DECLS 65 #define _ASSERT_H_DECLS 66 __BEGIN_DECLS 67 68 /* This prints an "Assertion failed" message and aborts. */ 69 extern void __assert_fail (const char *__assertion, const char *__file, 70 unsigned int __line, const char *__function) 71 __THROW __attribute__ ((__noreturn__)); 72 73 /* Likewise, but prints the error text for ERRNUM. */ 74 extern void __assert_perror_fail (int __errnum, const char *__file, 75 unsigned int __line, const char *__function) 76 __THROW __attribute__ ((__noreturn__)); 77 78 79 /* The following is not at all used here but needed for standard 80 compliance. */ 81 extern void __assert (const char *__assertion, const char *__file, int __line) 82 __THROW __attribute__ ((__noreturn__)); 83 84 85 __END_DECLS 86 #endif /* Not _ASSERT_H_DECLS */ 87 88 /* When possible, define assert so that it does not add extra 89 parentheses around EXPR. Otherwise, those added parentheses would 90 suppress warnings we'd expect to be detected by gcc's -Wparentheses. */ 91 # if defined __cplusplus 92 # define assert(expr) \ 93 (static_cast
(expr) \ 94 ? void (0) \ 95 : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION)) 96 # elif !defined __GNUC__ || defined __STRICT_ANSI__ 97 # define assert(expr) \ 98 ((expr) \ 99 ? __ASSERT_VOID_CAST (0) \ 100 : __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION)) 101 # else 102 /* The first occurrence of EXPR is not evaluated due to the sizeof, 103 but will trigger any pedantic warnings masked by the __extension__ 104 for the second occurrence. The ternary operator is required to 105 support function pointers and bit fields in this context, and to 106 suppress the evaluation of variable length arrays. */ 107 # define assert(expr) \ 108 ((void) sizeof ((expr) ? 1 : 0), __extension__ ({ \ 109 if (expr) \ 110 ; /* empty */ \ 111 else \ 112 __assert_fail (#expr, __FILE__, __LINE__, __ASSERT_FUNCTION); \ 113 })) 114 # endif 115 116 # ifdef __USE_GNU 117 # define assert_perror(errnum) \ 118 (!(errnum) \ 119 ? __ASSERT_VOID_CAST (0) \ 120 : __assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION)) 121 # endif 122 123 /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' 124 which contains the name of the function currently being defined. 125 This is broken in G++ before version 2.6. 126 C9x has a similar variable called __func__, but prefer the GCC one since 127 it demangles C++ function names. */ 128 # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4) 129 # define __ASSERT_FUNCTION __extension__ __PRETTY_FUNCTION__ 130 # else 131 # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L 132 # define __ASSERT_FUNCTION __func__ 133 # else 134 # define __ASSERT_FUNCTION ((const char *) 0) 135 # endif 136 # endif 137 138 #endif /* NDEBUG. */ 139 140 141 #if defined __USE_ISOC11 && !defined __cplusplus 142 # undef static_assert 143 # define static_assert _Static_assert 144 #endif
Contact us
|
About us
|
Term of use
|
Copyright © 2000-2024 MyWebUniversity.com ™