kotlin-fork/compiler/testData/diagnostics/tests/dataClasses/extensionComponentsOnNullable.kt

class Data<T>(val x: T, val y: T)

operator fun <T> Data<T>.component1() = x

operator fun <T> Data<T>.component2() = y

fun foo(): Int {
    val d: Data<Int>? = null
    // An error must be here
    val (x, y) = <!COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING!>d<!>
    return x + y
}

data class NormalData<T>(val x: T, val y: T)

fun bar(): Int {
    val d: NormalData<Int>? = null
    // An error must be here
    val (x, y) = <!COMPONENT_FUNCTION_MISSING, COMPONENT_FUNCTION_MISSING!>d<!>
    return <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>x<!> <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>+<!> <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>y<!>
}