// !DIAGNOSTICS: -DEBUG_INFO_MISSING_UNRESOLVED

external open class Base(x: Int) {
    constructor(x: String) : <!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>this<!>(23)

    constructor(x: String, y: String) : <!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>this<!>("")
}

external open class Derived1() : Base<!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>(23)<!> {
    constructor(x: Byte) : <!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>super<!>(23)

    constructor(x: String) : <!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>super<!>("")

    constructor(x: String, y: String) : <!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>super<!>("")
}

external open class Derived2() : Base<!EXTERNAL_DELEGATED_CONSTRUCTOR_CALL!>("")<!>