8960b0ff81
In Linux, these macros are defined in include/asm-generic/bug.h. To tidy up common.h, move BUG(), BUG_ON(), WARN(), WARN_ON() there. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
31 lines
971 B
C
31 lines
971 B
C
#ifndef _LINUX_BUG_H
|
|
#define _LINUX_BUG_H
|
|
|
|
#include <asm-generic/bug.h>
|
|
|
|
#ifdef __CHECKER__
|
|
#define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0)
|
|
#define BUILD_BUG_ON_ZERO(e) (0)
|
|
#define BUILD_BUG_ON_NULL(e) ((void*)0)
|
|
#define BUILD_BUG_ON(condition) (0)
|
|
#else /* __CHECKER__ */
|
|
|
|
/* Force a compilation error if a constant expression is not a power of 2 */
|
|
#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
|
|
BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
|
|
|
|
/* Force a compilation error if condition is true, but also produce a
|
|
result (of value 0 and type size_t), so the expression can be used
|
|
e.g. in a structure initializer (or where-ever else comma expressions
|
|
aren't permitted). */
|
|
#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
|
|
#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
|
|
|
|
/* Force a compilation error if condition is true */
|
|
#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition))
|
|
|
|
#endif
|
|
|
|
|
|
#endif /* _LINUX_BUG_H */
|