rust/src/test/run-pass/borrowck-borrow-from-at-vec.rs

fn sum_slice(x: &[int]) -> int {
    let mut sum = 0;
    for x.each |i| { sum += *i; }
    return sum;
}

fn main() {
    let x = @[1, 2, 3];
    assert sum_slice(x) == 6;
}