kotlin/compiler/testData/diagnostics/tests/declarationChecks/multiDeclarations/ForLoopComponentFunctionMissing.kt

class A {
    operator fun component1() = 1
}

class C {
    operator fun iterator(): Iterator<A> = null!!
}

fun test() {
    for ((x, y) in <!COMPONENT_FUNCTION_MISSING!>C()<!>) {

    }
}