// Copyright 2012 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. fn f(i: &mut ~int) { *i = ~200; } pub fn main() { let mut i = ~100; f(&mut i); assert_eq!(*i, 200); }