252 #define array_alloc(array)						\  argument
254 	typeof((array)->freelist) _ret = (array)->freelist;		\
257 		(array)->freelist = *((typeof((array)->freelist) *) _ret);\
262 #define array_free(array, ptr)						\  argument
264 	typeof((array)->freelist) _ptr = ptr;				\
266 	*((typeof((array)->freelist) *) _ptr) = (array)->freelist;	\
267 	(array)->freelist = _ptr;					\
270 #define array_allocator_init(array)					\  argument
272 	typeof((array)->freelist) _i;					\
274 	BUILD_BUG_ON(sizeof((array)->data[0]) < sizeof(void *));	\
275 	(array)->freelist = NULL;					\
277 	for (_i = (array)->data;					\
278 	     _i < (array)->data + ARRAY_SIZE((array)->data);		\
280 		array_free(array, _i);					\
283 #define array_freelist_empty(array)	((array)->freelist == NULL)  argument