// !LANGUAGE: +UnitConversionsOnArbitraryExpressions
// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION

fun interface KRunnable {
    fun run()
}

fun foo(r: KRunnable) {}

abstract class SubInt : () -> Int

fun test(f: () -> Int, s: SubInt) {
    foo(f)
    foo(s)
}