data class C(val x: Int, val y: String)

fun foo1(block: (C) -> Unit) = block(C(0, ""))
fun foo2(block: (C, C) -> Unit) = block(C(0, ""), C(0, ""))

fun test() {
    foo1 { (x, y) -> C(x, y) }
    foo1 { (x: Int, y: String) -> C(x, y) }
    foo1 { (<!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>x: String<!>, <!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>y: Int<!>) -> C(<!ARGUMENT_TYPE_MISMATCH!>x<!>, <!ARGUMENT_TYPE_MISMATCH!>y<!>) }
    foo2 { (x, y), (z, w) -> C(x + z, y + w) }
    foo2 { (x: Int, y: String), (z: Int, w: String) -> C(x + z, y + w) }
    foo2 { (<!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>x: String<!>, <!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>y: Int<!>), (<!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>z: String<!>, <!COMPONENT_FUNCTION_RETURN_TYPE_MISMATCH!>w: Int<!>) -> C(<!ARGUMENT_TYPE_MISMATCH!>x + z<!>, <!ARGUMENT_TYPE_MISMATCH!>y + w<!>) }
}