node_uid
struct node_uid *next;
struct node_uid *tail;
struct node_uid *uid;
$$ = calloc(1, sizeof(struct node_uid));
$$ = calloc(1, sizeof(struct node_uid));
$$ = calloc(1, sizeof(struct node_uid));
struct node_uid *, struct node_gid *, struct node_icmp *,
struct node_uid *uid;
struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
LOOP_THROUGH(struct node_uid, uid, uids,
FREE_LIST(struct node_uid, uids);