// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #[cfg_attr(all(), cfg_attr(all(), cfg(foo)))] fn f() {} fn main() { f() } //~ ERROR unresolved name `f`