[mirror_ubuntu-bionic-kernel.git] / include / linux / typecheck.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef TYPECHECK_H_INCLUDED
#define TYPECHECK_H_INCLUDED

/*
 * Check at compile time that something is of a particular type.
 * Always evaluates to 1 so you may use it easily in comparisons.
 */
#define typecheck(type,x) \
({	type __dummy; \
	typeof(x) __dummy2; \
	(void)(&__dummy == &__dummy2); \
	1; \
})

/*
 * Check at compile time that 'function' is a certain type, or is a pointer
 * to that type (needs to use typedef for the function type.)
 */
#define typecheck_fn(type,function) \
({	typeof(type) __tmp = function; \
	(void)__tmp; \
})

#endif		/* TYPECHECK_H_INCLUDED */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
e0deaff4 AM	2	#ifndef TYPECHECK_H_INCLUDED
	3	#define TYPECHECK_H_INCLUDED
	4
	5	/*
	6	* Check at compile time that something is of a particular type.
	7	* Always evaluates to 1 so you may use it easily in comparisons.
	8	*/
	9	#define typecheck(type,x) \
	10	({ type __dummy; \
	11	typeof(x) __dummy2; \
	12	(void)(&__dummy == &__dummy2); \
	13	1; \
	14	})
	15
	16	/*
	17	* Check at compile time that 'function' is a certain type, or is a pointer
	18	* to that type (needs to use typedef for the function type.)
	19	*/
	20	#define typecheck_fn(type,function) \
	21	({ typeof(type) __tmp = function; \
	22	(void)__tmp; \
	23	})
	24
	25	#endif /* TYPECHECK_H_INCLUDED */