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
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#define _LINUX_BUG_H
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#include <asm-generic/bug.h>
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#ifdef __CHECKER__
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#define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0)
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#define BUILD_BUG_ON_ZERO(e) (0)
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#define BUILD_BUG_ON_NULL(e) ((void*)0)
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#define BUILD_BUG_ON(condition) (0)
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#else /* __CHECKER__ */
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/* Force a compilation error if a constant expression is not a power of 2 */
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#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
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BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
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/* Force a compilation error if condition is true, but also produce a
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result (of value 0 and type size_t), so the expression can be used
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e.g. in a structure initializer (or where-ever else comma expressions
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aren't permitted). */
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#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
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#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
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/* Force a compilation error if condition is true */
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#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition))
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#endif
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#endif /* _LINUX_BUG_H */
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