cast.rs

use std::cast;

fn u8tou64(u: &[u8]) -> &[u64] {
        let r:&[u64] = unsafe { cast::transmute(u) };
        r
}

fn main() {
        let s = [1u8, 2u8, 3u8, 4u8];
        let v = u8tou64(&s);
}