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.
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 #![feature(box_syntax)]
13 use std::cell::RefCell;
17 let c = RefCell::new(vec![]);
20 //~^ ERROR cannot borrow `y` as mutable more than once at a time
25 let c = RefCell::new(vec![]);
27 Push::push(&c, box || y = 0);
28 Push::push(&c, box || y = 0);
29 //~^ ERROR cannot borrow `y` as mutable more than once at a time
33 fn push<'f: 'c>(&self, push: Box<FnMut() + 'f>);
36 impl<'c> Push<'c> for RefCell<Vec<Box<FnMut() + 'c>>> {
37 fn push<'f: 'c>(&self, fun: Box<FnMut() + 'f>) {
38 self.borrow_mut().push(fun)