// !WITH_NEW_INFERENCE
// !DIAGNOSTICS: -UNUSED_PARAMETER

import kotlin.reflect.KProperty

class A<R>() {
    operator fun <T> getValue(t: Any?, p: KProperty<*>): T = null!!
    operator fun <T> setValue(t: Any?, p: KProperty<*>, x: T) = Unit
}

var a1: Int by <!DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE{NI}, DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE{NI}!><!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER{NI}, TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER{OI}!>A<!>()<!>
var a2: Int by A<String>()

class B<R>() {
    operator fun <T> getValue(t: Any?, p: KProperty<*>): T = null!!
    operator fun setValue(t: Any?, p: KProperty<*>, x: R) = Unit
}

var b1: Int by B()
var b2: Int by B<Number>()

class C<R>() {
    operator fun getValue(t: Any?, p: KProperty<*>): R = null!!
    operator fun <T> setValue(t: Any?, p: KProperty<*>, x: T) = Unit
}

var c1: Int by C()
var c2: Int by <!DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE{NI}, DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE{NI}, DELEGATE_SPECIAL_FUNCTION_RETURN_TYPE_MISMATCH{OI}!>C<Number>()<!>