===
open class Ccc() {
fun foo() = 1
}
trait Ttt {
fun foo(): Int
}
class Zzz() : Ccc(), Ttt // there must not be an error here
===
Reported by Andrey Breslav as a bug of Comparator implementation:
===
fun comparator<T>(f: (T, T) -> Int): Comparator<T> = object : Comparator<T>, Object() {
override fun compare(o1: T, o2: T): Int = f(o1, o2)
}
===
Stepan Koltsov