// Copyright 2014 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. #![feature(libc, os)] extern crate libc; #[link(name="foo")] extern { fn should_return_one() -> libc::c_int; } fn main() { let result = unsafe { should_return_one() }; if result != 1 { std::os::set_exit_status(255); } }