// WITH_STDLIB // WORKS_WHEN_VALUE_CLASS // LANGUAGE: +ValueClasses, +GenericInlineClassParameter interface IFoo { fun foo(): String } OPTIONAL_JVM_INLINE_ANNOTATION value class IC(val x: T) : IFoo { private fun privateFun() = x override fun foo() = privateFun() } fun box(): String { val x: IFoo = IC("OK") return x.foo() }