trying to toggle output on output compare and in interrupt, not working

include/stm32f1xx_it.h

@@ -54,6 +54,7 @@ void SVC_Handler(void);
 void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
+void TIM1_CC_IRQHandler(void);
 
 #ifdef __cplusplus
 }