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1 | // Copyright 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. | |
4 | // | |
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. | |
10 | ||
11 | #![feature(box_syntax)] | |
12 | ||
13 | struct Foo { | |
14 | x: isize | |
15 | } | |
16 | ||
17 | impl Drop for Foo { | |
18 | fn drop(&mut self) { | |
19 | println!("drop {}", self.x); | |
20 | } | |
21 | } | |
22 | ||
23 | fn main() { | |
c34b1796 | 24 | let mut ptr: Box<_> = box Foo { x: 0 }; |
85aaf69f | 25 | let mut test = |foo: &Foo| { |
1a4d82fc JJ |
26 | println!("access {}", foo.x); |
27 | ptr = box Foo { x: ptr.x + 1 }; | |
28 | println!("access {}", foo.x); | |
29 | }; | |
30 | test(&*ptr); | |
31 | //~^ ERROR: cannot borrow `*ptr` as immutable | |
32 | } |