460 #define	QMD_TAILQ_CHECK_TAIL(head, headname)  argument
490 #define	TAILQ_FOREACH_REVERSE(var, head, headname, field)		\  argument
491 	for ((var) = TAILQ_LAST((head), headname);			\
493 	    (var) = TAILQ_PREV((var), headname, field))
495 #define	TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)	\  argument
496 	for ((var) = TAILQ_LAST((head), headname);			\
497 	    (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);	\
554 #define	TAILQ_LAST(head, headname)					\  argument
555 	(*(((struct headname *)((head)->tqh_last))->tqh_last))
559 #define	TAILQ_PREV(elm, headname, field)				\  argument
560 	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))