build/rust/tests/test_bin_crate/crate/src/main.rs

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

fn main() {
    println!("Hello, world!");
    #[cfg(is_new_rustc)]
    println!("Is new rustc!");
    #[cfg(is_old_rustc)]
    println!("Is old rustc!");
    #[cfg(is_android)]
    println!("Is android!");
    #[cfg(is_mac)]
    println!("Is darwin!");
}