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8fb81470 | 1 | /* Copyright (C) 1991,92,94,95,96,97,98,99,2000 Free Software Foundation, Inc. |
ba1ffaa1 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ba1ffaa1 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
28f540f4 | 8 | |
ba1ffaa1 UD |
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 | Library General Public License for more details. | |
28f540f4 | 13 | |
ba1ffaa1 UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
18 | |
19 | /* | |
d1646309 | 20 | * ISO C99 Standard: 7.2 Diagnostics <assert.h> |
28f540f4 RM |
21 | */ |
22 | ||
23 | #ifdef _ASSERT_H | |
24 | ||
40a55d20 UD |
25 | # undef _ASSERT_H |
26 | # undef assert | |
27 | ||
28 | # ifdef __USE_GNU | |
29 | # undef assert_perror | |
30 | # endif | |
28f540f4 RM |
31 | |
32 | #endif /* assert.h */ | |
33 | ||
34 | #define _ASSERT_H 1 | |
35 | #include <features.h> | |
36 | ||
37 | /* void assert (int expression); | |
38 | ||
39 | If NDEBUG is defined, do nothing. | |
40 | If not, and EXPRESSION is zero, print an error message and abort. */ | |
41 | ||
42 | #ifdef NDEBUG | |
43 | ||
f21acc89 | 44 | # define assert(expr) ((void) 0) |
28f540f4 RM |
45 | |
46 | /* void assert_perror (int errnum); | |
47 | ||
48 | If NDEBUG is defined, do nothing. If not, and ERRNUM is not zero, print an | |
49 | error message with the error text for ERRNUM and abort. | |
50 | (This is a GNU extension.) */ | |
51 | ||
f21acc89 UD |
52 | # ifdef __USE_GNU |
53 | # define assert_perror(errnum) ((void) 0) | |
54 | # endif | |
28f540f4 RM |
55 | |
56 | #else /* Not NDEBUG. */ | |
57 | ||
28f540f4 RM |
58 | __BEGIN_DECLS |
59 | ||
60 | /* This prints an "Assertion failed" message and aborts. */ | |
c1422e5b UD |
61 | extern void __assert_fail (__const char *__assertion, __const char *__file, |
62 | unsigned int __line, __const char *__function) | |
63 | __THROW __attribute__ ((__noreturn__)); | |
28f540f4 RM |
64 | |
65 | /* Likewise, but prints the error text for ERRNUM. */ | |
c1422e5b UD |
66 | extern void __assert_perror_fail (int __errnum, __const char *__file, |
67 | unsigned int __line, | |
68 | __const char *__function) | |
69 | __THROW __attribute__ ((__noreturn__)); | |
28f540f4 | 70 | |
8fb81470 UD |
71 | |
72 | /* The following is not at all used here but needed for standard | |
73 | compliance. */ | |
74 | extern void __assert (const char *__assertion, const char *__file, int __line) | |
75 | __THROW __attribute__ ((__noreturn__)); | |
76 | ||
77 | ||
28f540f4 RM |
78 | __END_DECLS |
79 | ||
f21acc89 UD |
80 | # define assert(expr) \ |
81 | ((void) ((expr) ? 0 : \ | |
28f540f4 RM |
82 | (__assert_fail (__STRING(expr), \ |
83 | __FILE__, __LINE__, __ASSERT_FUNCTION), 0))) | |
84 | ||
f21acc89 UD |
85 | # ifdef __USE_GNU |
86 | # define assert_perror(errnum) \ | |
6591c335 UD |
87 | ((void) (!(errnum) ? 0 : (__assert_perror_fail ((errnum), \ |
88 | __FILE__, __LINE__, \ | |
89 | __ASSERT_FUNCTION), 0))) | |
f21acc89 | 90 | # endif |
28f540f4 RM |
91 | |
92 | /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' | |
93 | which contains the name of the function currently being defined. | |
05cc5bd9 UD |
94 | This is broken in G++ before version 2.6. |
95 | C9x has a similar variable called __func__, but prefer the GCC one since | |
96 | it demangles C++ function names. */ | |
d0db5f48 | 97 | # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4) |
05cc5bd9 | 98 | # define __ASSERT_FUNCTION __PRETTY_FUNCTION__ |
05cc5bd9 UD |
99 | # else |
100 | # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L | |
101 | # define __ASSERT_FUNCTION __func__ | |
102 | # else | |
103 | # define __ASSERT_FUNCTION ((__const char *) 0) | |
104 | # endif | |
f21acc89 | 105 | # endif |
28f540f4 | 106 | |
28f540f4 | 107 | #endif /* NDEBUG. */ |