blob: 46b15e2aaefb4e7a4d21c8797ec4d1578998981c [file] [log] [blame]
/* 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; \
})
/*
* Check at compile time that something is a pointer type.
*/
#define typecheck_pointer(x) \
({ typeof(x) __dummy; \
(void)sizeof(*__dummy); \
1; \
})
#endif /* TYPECHECK_H_INCLUDED */