It seems to be working but I need to ckeck again

src/intermediate_code.h

@@ -32,6 +32,7 @@ void * S_Pop(Stack *s);
 void * S_Peek(Stack *s);
 bool S_IsEmpty(Stack *s);
 int S_Size(Stack *s);
+void S_Merge(Stack *list);
 //______________________________________________________________________________________________
 
 typedef union TNConstUnion TNConstUnion;