HASH *hash_create (int nelem);
int hash_string (const unsigned char *s, int n);
-int hash_insert (HASH * table, const char *key, void *data, int allow_dup);
+int hash_insert (HASH * table, const char *key, const void *data, int allow_dup);
HASH *hash_resize (HASH * table, int nelem);
void *hash_find_hash (const HASH * table, int hash, const char *key);
void hash_delete_hash (HASH * table, int hash, const char *key,