// Copyright 2014 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. // this code used to cause an ICE fn main() { let t = Err(0); match t { Some(k) => match k { //~ ERROR mismatched types a => println!("{}", a) }, None => () //~ ERROR mismatched types } }