3 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
4 // file at the top-level directory of this distribution and at
5 // http://rust-lang.org/COPYRIGHT.
7 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
8 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
9 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
10 // option. This file may not be copied, modified, or distributed
11 // except according to those terms.
13 // exec-env:RUST_POISON_ON_FREE=1
15 #![feature(managed_boxes)]
18 fn borrow(x: &int, f: |x: &int|) {
22 assert_eq!(before, after);
25 struct F { f: Box<int> }
28 let mut x = @F {f: box 3};
29 borrow((*x).f, |b_x| {
30 //~^ ERROR cannot borrow `x` as mutable because `*x.f` is also borrowed as immutable
32 assert_eq!(&(*x.f) as *int, &(*b_x) as *int);
33 //~^ NOTE borrow occurs due to use of `x` in closure
36 println!("&*b_x = {:p}", &(*b_x));
38 assert!(&(*x.f) as *int != &(*b_x) as *int);