list_next
u32 list_next = 0;
if (first_list[z] != list_next) {
z, first_list[z], list_next);
list_next += list_count[z];
if (list_next != delta_index->list_count) {
list_next, delta_index->list_count);
for (e = element_list; e; e = e->list_next)
struct element *list_next;
e->list_next = element_list;
pos = list_next(pos, member))