// Copyright 2012-2014 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. //aux-build:extern-crosscrate-source.rs #![feature(libc)] extern crate externcallback; extern crate libc; fn fact(n: libc::uintptr_t) -> libc::uintptr_t { unsafe { println!("n = {}", n); externcallback::rustrt::rust_dbg_call(externcallback::cb, n) } } pub fn main() { let result = fact(10); println!("result = {}", result); assert_eq!(result, 3628800); }