void server_list_free(memcached_st *ptr, memcached_server_st *servers);
LIBMEMCACHED_LOCAL
-memcached_return memcached_key_test(char **keys, size_t *key_length,
- unsigned int number_of_keys);
+memcached_return memcached_key_test(const char **keys, size_t *key_length,
+ size_t number_of_keys);
LIBMEMCACHED_LOCAL