#include "arithmetics.hpp"

namespace arithmetics
{
	int add(int a, int b)
	{
		return a + b;
	}
	
	int add_buggy(int a, int b)
	{
		return a + b;
	}
}



#include "arithmetics.hpp"

namespace arithmetics
{
	int add(int a, int b)
	{
		return a + b;
	}
	
	int add_buggy(int a, int b)
	{
		return a + b + 1;
	}
}



--- 
+++ 
@@ -9,7 +9,7 @@
 	
 	int add_buggy(int a, int b)
 	{
-		return a + b + 1;
+		return a + b;
 	}
 }
 
Fix bug to see efect for Travis
