    tqh_first         318 libdb/queue.h  	struct type *tqh_first;	/* first element */			\
    tqh_first         323 libdb/queue.h  	{ NULL, &(head).tqh_first }
    tqh_first         334 libdb/queue.h  #define	TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
    tqh_first         344 libdb/queue.h  #define	TAILQ_FIRST(head) ((head)->tqh_first)
    tqh_first         355 libdb/queue.h  	(head)->tqh_first = NULL;					\
    tqh_first         356 libdb/queue.h  	(head)->tqh_last = &(head)->tqh_first;				\
    tqh_first         360 libdb/queue.h  	if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)	\
    tqh_first         361 libdb/queue.h  		(head)->tqh_first->field.tqe_prev =			\
    tqh_first         365 libdb/queue.h  	(head)->tqh_first = (elm);					\
    tqh_first         366 libdb/queue.h  	(elm)->field.tqe_prev = &(head)->tqh_first;			\