1 // Copyright 2015 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.
13 fn leak<T>(mut b: Box<T>) -> &'static mut T {
14 // isn't this supposed to be safe?
15 let inner = &mut *b as *mut _;
17 unsafe { &mut *inner }
20 fn evil(mut s: &'static mut String)
23 let alias: &'static mut String = s;
24 let inner: &str = &alias;
26 *s = String::new(); //~ ERROR cannot assign
27 let _spray = "0wned".to_owned();
28 // ... and then use it
29 println!("{}", inner);
33 evil(leak(Box::new("hello".to_owned())));