kotlin/compiler/testData/codegen/boxWithJava/collections/irrelevantImplCharSequence/irrelevantImplCharSequence.kt

class X : J.A()

fun box(): String {
    val x = X()
    if (x.length != 56) return "fail 1"
    if (x[0] != 'A') return "fail 2"
    return "OK"
}