Type hint on structs is ignored

[huonw]

This compiles fine:

struct Point <T> { x: T, y: T }

fn main() {
    let _b: Point<u64> = Point::<u8> { x: 1, y: 2 };
}

[luqmana]

This makes using phantom types a bit annoying:

enum Open {}
enum Closed {}

struct Door<State> {
    name: ~str
}

fn open(Door { name }: Door<Closed>) -> Door<Open> {
    Door { name: name }
}

fn main() {
    let d: Door<Open> = Door { name: ~"front" };
    open(d); // Fails (as it should)

    let d = Door::<Open> { name: ~"front" };
    open(d); // Should fail but doesn't
}

[pnkfelix]

P-low, not 1.0 blocker.