// Copyright 2017 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. #![cfg_attr(stage0, feature(macro_vis_matcher))] macro_rules! foo { ($($p:vis)*) => {} //~ ERROR repetition matches empty token tree } foo!(a);