Struct destructuring allows repeated bindings of a moved variable

[alexcrichton]

This code will segfault when run:

struct A {
    a: ~int,
    b: bool,
}

fn main() {
    let a = A { a: ~2, b: true };
    let A { a, a, _ } = a;
    println!("{:?}", a);
}

I'm not entirely sure why it segfaults, but I shouldn't be able to bind the name a twice. Turns out if you have long variable names and you accidentally forget the colon (to make it a: a, then this is will come back to bite you!)

[alexcrichton]

Nominating production-ready

[catamorphism]

1.0, high