fn test_for_in_ref_val_ref_arr() {
    arr := [1, 2, 3, 4, 5]
    mut rets := []&int{}
    mut expects := unsafe { []&int{len: 5, init: &arr[index]} }

    for val in &arr {
        println(val)
        rets << val
    }

    for i, val in &arr {
        assert voidptr(val) == voidptr(rets[i])
    }
    assert rets == expects
}

fn test_for_in_ref_val_ref_arr_ident() {
    arr_ := [1, 2, 3, 4, 5]
    arr := &arr_
    mut rets := []&int{}
    mut expects := unsafe { []&int{len: 5, init: &arr_[index]} }

    for val in arr {
        rets << val
    }

    for i, val in arr {
        assert voidptr(val) == voidptr(rets[i])
    }
    assert rets == expects
}