/*
[Test: callchain]
*/
//[source: mixed]
fun add2(x)
{
    return x + 2;
}
fun sub2(x)
{
    return x - 2;
}
fun mul2(x)
{
    return x * 2;
}

print(add2(sub2(mul2(sub2(5)))));
//[end]
/*
[stdout]
6
[end]
[end]
*/