rust/src/test/compile-fail/unique-vec-res.rs

// error-pattern: copying a noncopyable value

class r {
  let i: @mut int;
  new(i: @mut int) { self.i = i; }
  drop { *(self.i) = *(self.i) + 1; }
}

fn f<T>(+i: ~[T], +j: ~[T]) {
    let k = i + j;
}

fn main() {
    let i1 = @mut 0;
    let i2 = @mut 1;
    let r1 <- ~[~r(i1)];
    let r2 <- ~[~r(i2)];
    f(r1, r2);
    log(debug, (r2, *i1));
    log(debug, (r1, *i2));
}