Index: ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp
===================================================================
diff -u -r8d80f35bf88694bd50d769b9bab31db8364a9004 -r509657069dd7ee800560a5c0b790077ce4cbd31a
--- ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp	(.../buzzer.cpp)	(revision 8d80f35bf88694bd50d769b9bab31db8364a9004)
+++ ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp	(.../buzzer.cpp)	(revision 509657069dd7ee800560a5c0b790077ce4cbd31a)
@@ -82,6 +82,8 @@
 		delete_timer(t);
 		GP2SET_SET2_BBA = 0x1; //stop
 	}
+
+	return 0;
 }
 
 void _beep(int time, ...)