xmallocarray
*stats = xmallocarray(xfrd->nsd->child_count*2, sizeof(struct nsdst));
zonestats[0] = xmallocarray(xfrd->zonestat_safe, sizeof(struct nsdst));
zonestats[1] = xmallocarray(xfrd->zonestat_safe, sizeof(struct nsdst));
rrl_maps = (void**)xmallocarray(rrl_maps_num, sizeof(void*));
compressed_dname_offsets = (uint16_t *) xmallocarray(
void *xmallocarray(size_t num, size_t size);