// 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. #![feature(managed_boxes)] use std::cell::Cell; enum newtype { newtype(int) } pub fn main() { // Test that borrowck treats enums with a single variant // specially. let x = @Cell::new(5); let y = @Cell::new(newtype(3)); let z = match y.get() { newtype(b) => { x.set(x.get() + 1); x.get() * b } }; assert_eq!(z, 18); }