rust/src/test/compile-fail/issue-39404.rs

// 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 <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.

#![deny(missing_fragment_specifier)] //~ NOTE lint level defined here
#![allow(unused_macros)]

macro_rules! m { ($i) => {} }
//~^ ERROR missing fragment specifier
//~| WARN previously accepted
//~| NOTE issue #40107

fn main() {}