Iterating through a vector with a reference corrupts the contents of the vector

[paigeruten]

$ rustc -v
rustc 0.12.0-pre-nightly (e189122e9 2014-08-13 00:41:22 +0000)
$ cat bug.rs
fn main() {
    let vector: Vec<Vec<u8>> = vec![vec!(1, 2, 3), vec!(4, 5, 6)];

    println!("{}", vector);

    for &x in vector.iter() {
    }

    println!("{}", vector);
}

$ rustc bug.rs && ./bug
[[1, 2, 3], [4, 5, 6]]
[[], []]

[huonw]

I believe this is a dupe of #16205, which was fixed very recently by #16458 (just after the nightly compiler you are using); the compiler now correctly emits an error message, http://is.gd/dtQa8z

<anon>:6:9: 6:11 error: cannot move out of dereference of `&`-pointer
<anon>:6     for &x in vector.iter() {
                 ^~
<anon>:6:10: 6:11 note: attempting to move value to here (to prevent the move, use `ref x` or `ref mut x` to capture value by reference)
<anon>:6     for &x in vector.iter() {
                  ^

Thanks for filing!