Proc lifetime bug

[bvssvni]

fn main() {
    let r = {
        let x = 42;
        let f = proc() &x;
        f()
    };

    // Prints out '&1', but should give a compiler error 'borrowed value does not live long enough'.
    println!("{:?}", r);
}

[lilyball]

This can segfault too, if you change what x is.

fn main() {
    let r = {
        let x = ~42;
        let f = proc() &x;
        f()
    };

    println!("{:?}", r);
}

cc @nikomatsakis

[zr40]

Might be related to #10398.

[nikomatsakis]

I'll take a look.

[alexcrichton]

This has been fixed, flagging as needstest.

[flaper87]

a small description in the test files explaining what the test does would have been nice.