1 // Copyright 2013 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 use std::cell::RefCell;
16 let m = RefCell::new(0);
17 let mut b = m.borrow_mut();
19 let b2 = &mut *b; //~ ERROR cannot borrow
23 trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
24 impl<T> Fake for T { }