build_bug.h File Reference

#include <linux/compiler.h>

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Macros
#define	BUILD_BUG_ON_ZERO(e, ...)    __BUILD_BUG_ON_ZERO_MSG(e, ##__VA_ARGS__, #e " is true")
#define	__BUILD_BUG_ON_NOT_POWER_OF_2(n)    BUILD_BUG_ON(((n) & ((n) - 1)) != 0)
#define	BUILD_BUG_ON_NOT_POWER_OF_2(n)    BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
#define	BUILD_BUG_ON_INVALID(e)   ((void)(sizeof((__force long)(e))))
#define	BUILD_BUG_ON_MSG(cond, msg)   compiletime_assert(!(cond), msg)
#define	BUILD_BUG_ON(condition)    BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
#define	BUILD_BUG()   BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
#define	static_assert(expr, ...)   __static_assert(expr, ##__VA_ARGS__, #expr)
#define	__static_assert(expr, msg, ...)   _Static_assert(expr, msg)
#define	ASSERT_STRUCT_OFFSET(type, field, expected_offset)

Macro Definition Documentation

__BUILD_BUG_ON_NOT_POWER_OF_2

#define __BUILD_BUG_ON_NOT_POWER_OF_2

(

n

)

BUILD_BUG_ON(((n) & ((n) - 1)) != 0)

__static_assert

#define __static_assert	(		expr,
			msg,
			...
	)		_Static_assert(expr, msg)

ASSERT_STRUCT_OFFSET

#define ASSERT_STRUCT_OFFSET	(		type,
			field,
			expected_offset
	)

Value:

    BUILD_BUG_ON_MSG(offsetof(type, field) != (expected_offset),    \
        "Offset of " #field " in " #type " has changed.")

BUILD_BUG

#define BUILD_BUG

(

)

BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")

BUILD_BUG_ON

#define BUILD_BUG_ON

(

condition

)

BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)

BUILD_BUG_ON_INVALID

#define BUILD_BUG_ON_INVALID

(

e

)

((void)(sizeof((__force long)(e))))

BUILD_BUG_ON_MSG

#define BUILD_BUG_ON_MSG	(		cond,
			msg
	)		compiletime_assert(!(cond), msg)

BUILD_BUG_ON_NOT_POWER_OF_2

#define BUILD_BUG_ON_NOT_POWER_OF_2

(

n

)

BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))

BUILD_BUG_ON_ZERO

#define BUILD_BUG_ON_ZERO	(		e,
			...
	)		__BUILD_BUG_ON_ZERO_MSG(e, ##__VA_ARGS__, #e " is true")

static_assert

#define static_assert	(		expr,
			...
	)		__static_assert(expr, ##__VA_ARGS__, #expr)