Segmentation fault due to iterator living longer than its parent

[hatahet]

This bug was originally reported on the Rust subreddit by user double_to_bool_conv: http://www.reddit.com/r/rust/comments/24kfmv/iterator_can_live_longer_than_its_parent_is_this/

The version below has been updated after the removal of the ~"string" syntax.

$ rustc -v
rustc 0.11-pre (4f1b0b5 2014-05-03 12:21:47 -0700)
host: x86_64-unknown-linux-gnu

n owned_iterator(slice: &[~str]) -> ~Iterator<~str> {
    ~slice.iter().map(|s| s.clone()) as ~Iterator<~str>
}

fn main() {
    let mut fail = {
        owned_iterator(~["ok".to_owned()])
    };
    let v = ~["fail".to_owned()];
    for i in fail {
        println!("{}", i); // prints "fail"
    }

    let mut segFault = {
        owned_iterator(~["ok".to_owned()])
    };
    let v = ~[-1];
    for i in segFault {
        println!("{}", i); // Segmentation fault 
    }
}

[alexcrichton]

Closing as a dupe of #9745, which is itself claimed to be a dupe of #5723. Thanks for the report though!