object Test extends App {
  // illegal
  val err1 = "" match { case Seq(f @ _*, ',') => f }

  // no error
  val List(List(arg1, _*), _) = List(List(1,2,3), List(4,5,6))

  // illegal
  val List(List(_*, arg2), _) = List(List(1,2,3), List(4,5,6))

  /* see t1878-typer.scala
  // illegal - bug #1764
  null match {
    case <p> { _* } </p> =>
  }
  */
}