obj buf[T](tup(T,T,T) data) {
  fn get(int i) -> T {
    if (i == 0) {
      ret data._0;
    } else {
      if (i == 1) {
        ret data._1;
      } else {
        ret data._2;
      }
    }
  }

  fn take(&T t) {}
  fn take2(&T t) {}
}

fn main() {
  let buf[int] b = buf[int](tup(1,2,3));
  log "constructed object";
  log b.get(0);
  log b.get(1);
  log b.get(2);
  check (b.get(0) == 1);
  check (b.get(1) == 2);
  check (b.get(2) == 3);
  b.take2(0);
}