// Copyright 2015 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.

use std::ops::Index;
fn bar() {}
static UNIT: () = ();
struct S;
impl Index<fn()> for S {
    type Output = ();
    fn index(&self, _: fn()) -> &() { &UNIT }
}
fn main() {
    S.index(bar);
    S[bar];
}