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comparison err.h @ 66:f773c76b1f3c

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Added extern C tests
author David Demelier <markand@malikania.fr>
date Wed, 09 Nov 2011 21:08:43 +0100
parents ed6ae3b865c9
children 6a9ff80949f5
comparison
equal deleted inserted replaced
65:b2cd1fd33bb0 66:f773c76b1f3c
19 #ifndef _ERR_H_ 19 #ifndef _ERR_H_
20 #define _ERR_H_ 20 #define _ERR_H_
21 21
22 #include <stdarg.h> 22 #include <stdarg.h>
23 23
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27
24 /* 28 /*
25 * Attribute noreturn may helps. This may produce a warning with GCC 4.5: 29 * Attribute noreturn may helps. This may produce a warning with GCC 4.5:
26 * 30 *
27 * int a; 31 * int a;
28 * 32 *
32 * Because compilator does not know that errx will call exit may produce 36 * Because compilator does not know that errx will call exit may produce
33 * a warning like `a may be used uninitialized'. 37 * a warning like `a may be used uninitialized'.
34 */ 38 */
35 39
36 #ifdef __GNUC__ 40 #ifdef __GNUC__
37 #define _NORETURN_ __attribute__ ((noreturn)) 41 # define __at_noreturn __attribute__ ((noreturn))
38 #endif 42 #endif
39 43
40 /* 44 /*
41 * err() functions append the format message to the stderr FILE pointer. They 45 * err() functions append the format message to the stderr FILE pointer. They
42 * also append the system error using strerror(errno). Then the functions exit 46 * also append the system error using strerror(errno). Then the functions exit
43 * with the error code given as first argument. 47 * with the error code given as first argument.
44 */ 48 */
45 49
46 void err(int, const char *, ...) _NORETURN_; 50 void err(int, const char *, ...) __at_noreturn;
47 void verr(int, const char *, va_list) _NORETURN_; 51 void verr(int, const char *, va_list) __at_noreturn;
48 52
49 /* 53 /*
50 * errx() functions are similar to err() except that they do not append the 54 * errx() functions are similar to err() except that they do not append the
51 * system error message. 55 * system error message.
52 */ 56 */
53 57
54 void errx(int, const char *, ...) _NORETURN_; 58 void errx(int, const char *, ...) __at_noreturn;
55 void verrx(int, const char *, va_list) _NORETURN_; 59 void verrx(int, const char *, va_list) __at_noreturn;
56 60
57 /* 61 /*
58 * warn() functions are similar to err() but they do not call exit(). 62 * warn() functions are similar to err() but they do not call exit().
59 */ 63 */
60 64
67 */ 71 */
68 72
69 void warnx(const char *, ...); 73 void warnx(const char *, ...);
70 void vwarnx(const char *, va_list); 74 void vwarnx(const char *, va_list);
71 75
76 #ifdef __cplusplus
77 }
78 #endif
79
72 #endif /* _ERR_H_ */ 80 #endif /* _ERR_H_ */