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allow bug.h re-inclusion

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Bruno Raoult
2024-05-18 13:30:46 +02:00
parent 8ff163dcf5
commit 7bedfddfba
1 changed files with 18 additions and 6 deletions
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24
include/bug.h
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@@ -11,8 +11,21 @@
*
*/
#ifndef _BUG_H
#define _BUG_H
/* we allow multiple inclusions, so that BUG_ON/WARN_ON can change during
* compilation.
*/
#ifdef BUG_H
#undef BUG_H
/* reset all macros */
#undef bug_on
#undef warn_on
#undef warn
#endif /* BUG_H */
#define BUG_H
#include <stdio.h>
#include <stdlib.h>
@@ -22,7 +35,7 @@
#include "likely.h"
#ifdef BUG_ON
#define bug_on(expr) do { \
#define bug_on(expr) do { \
if (unlikely(expr)) { \
fprintf(stderr, \
"** BUG IN %s[%s:%d]: assertion \"" #expr "\" failed.\n", \
@@ -31,7 +44,7 @@
} \
} while (0)
#else
#define bug_on(expr) ({ 0; })
#define bug_on(expr)
#endif
#ifdef WARN_ON
@@ -46,11 +59,10 @@
#else
#define warn_on(expr) ({ 0; })
#endif
#define warn(expr, args...) ({ \
int _ret = !!(expr); \
if (unlikely(_ret)) \
fprintf(stderr, ##args); \
unlikely(_ret); \
})
#endif /* _BUG_H */