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