trait A {
    fun bar2(arg: Int = 239) : Int

    fun bar(arg: Int = 240) : Int = bar2(arg/2)
}

open abstract class B() : A, java.lang.Object() {
    override fun bar2(arg: Int) : Int = arg
}

class C() : B() {
}

fun box() : String {
    if(C().bar(10) != 5) return "fail"
    if(C().bar() != 120) return "fail"
    if(C().bar2() != 239) return "fail"
    if(C().bar2(10) != 10) return "fail"
    return "OK"
}