rust/src/test/compile-fail/issue-2848.rs

// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

mod bar {
    pub enum foo {
        alpha,
        beta,
        charlie
    }
}

fn main() {
    use bar::foo::{alpha, charlie};
    match alpha {
      alpha | beta => {} //~ ERROR variable `beta` from pattern #2 is not bound in pattern #1
      charlie => {}
    }
}