+#ifdef __GNUC__
+#define ADC_CMDCOM \
+ struct socket *sk __attribute__ ((unused)) = fn->sk; \
+ struct adchub *hub __attribute__ ((unused)) = fn->data;
+#else
+#define ADC_CMDCOM \
+ struct socket *sk = fn->sk; \
+ struct adchub *hub = fn->data;
+#endif