src/Pure/System/invoke_scala.scala

     Exn.capture { get_method(name) } match {
       case Exn.Res(f) =>
         Exn.capture { f(arg) } match {
           case Exn.Res(null) => (Tag.NULL, "")
           case Exn.Res(res) => (Tag.OK, res)
-          case Exn.Exn(_: InterruptedException) => (Tag.INTERRUPT, "")
+          case Exn.Exn(Exn.Interrupt()) => (Tag.INTERRUPT, "")
           case Exn.Exn(e) => (Tag.ERROR, Exn.message(e))
         }
       case Exn.Exn(e) => (Tag.FAIL, Exn.message(e))
     }
 }