pub fn main() {
    let x = @[1, 2, 3];
    match x {
        [2, .._] => ::core::util::unreachable(),
        [1, ..tail] => {
            assert tail == [2, 3];
        }
        [_] => ::core::util::unreachable(),
        [] => ::core::util::unreachable()
    }

    let y = (~[(1, true), (2, false)], 0.5);
    match y {
        ([_, _, _], 0.5) => ::core::util::unreachable(),
        ([(1, a), (b, false), ..tail], _) => {
            assert a == true;
            assert b == 2;
            assert tail.is_empty();
        }
        ([..tail], _) => ::core::util::unreachable()
    }
}