-#define DISPATCH_PROTO listen_socket_t *sock __attribute__((unused)),\
- time_t now __attribute__((unused)),\
- char *buffer __attribute__((unused)),\
- size_t buffer_size __attribute__((unused))
+#define DISPATCH_PROTO listen_socket_t UNUSED(*sock),\
+ time_t UNUSED(now),\
+ char UNUSED(*buffer),\
+ size_t UNUSED(buffer_size)