File: bug711.scala

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scala 2.9.2%2Bdfsg-1
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abstract class Component

class Button extends Component {
  def sayHey: Unit = Console.println("Hey, I'm a button") }
  
abstract class Origin {
  val delegate: Component }

object main extends Origin with App {
  val delegate: Component {
    def sayHey: Unit
  } = new Button
  delegate.sayHey
}