expanded-cfg.rs

// Copyright 2016 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.

#![feature(custom_attribute, rustc_attrs)]

macro_rules! mac {
    {} => {
        #[cfg(attr)]
        mod m {
            #[lang_item]
            fn f() {}

            #[cfg_attr(target_thread_local, custom)]
            fn g() {}
        }

        #[cfg(attr)]
        unconfigured_invocation!();
    }
}

mac! {}

#[rustc_error]
fn main() {} //~ ERROR compilation successful