* The result must not be freed. This storage is managed by the cache
* itself.
*/
-const xcb_query_extension_reply_t *xcb_get_extension_data(xcb_connection_t *c, xcb_extension_t *ext);
+const struct xcb_query_extension_reply_t *xcb_get_extension_data(xcb_connection_t *c, xcb_extension_t *ext);
/**
* @brief Prefetch of extension data into the extension cache
*
* The result must not be freed.
*/
-const xcb_setup_t *xcb_get_setup(xcb_connection_t *c);
+const struct xcb_setup_t *xcb_get_setup(xcb_connection_t *c);
/**
* @brief Access the file descriptor of the connection.