// 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. enum maybe_pointy { no_pointy, yes_pointy(@Pointy), } struct Pointy { mut x : maybe_pointy } pub fn main() { let m = @Pointy { mut x : no_pointy }; m.x = yes_pointy(m); }