hostname_cache
static struct hostname_cache **hnc_cache;
struct hostname_cache **hpp;
hnc_cache = calloc(hnc_size, sizeof (struct hostname_cache *));
struct hostname_cache **hpp, *hp;
struct hostname_cache **hpp, **tailp, *hp, *entry;
if ((entry = malloc(sizeof (struct hostname_cache))) == NULL) {
hnc_unreg(struct hostname_cache **hpp)
struct hostname_cache *hp = *hpp;
struct hostname_cache *next;
static void hnc_unreg(struct hostname_cache **);