rust/src/test/run-pass/generic-exterior-box.rs
Patrick Walton 9089cf2ec9 librustc: Forbid & pointers (other than &'static) inside @ boxes.
This makes custom borrowing implementations for custom smart pointers
sound.
2013-07-18 17:12:46 -07:00

22 lines
686 B
Rust

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
struct Recbox<T> {x: @T}
fn reclift<T:'static>(t: T) -> Recbox<T> { return Recbox {x: @t}; }
pub fn main() {
let foo: int = 17;
let rbfoo: Recbox<int> = reclift::<int>(foo);
assert_eq!(*rbfoo.x, foo);
}