| // 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 <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. |
| |
| extern crate testcrate; |
| |
| use std::mem; |
| |
| extern { |
| fn give_back(tu: testcrate::TestUnion) -> u64; |
| } |
| |
| fn main() { |
| let magic: u64 = 0xDEADBEEF; |
| |
| // Let's test calling it cross crate |
| let back = unsafe { |
| testcrate::give_back(mem::transmute(magic)) |
| }; |
| assert_eq!(magic, back); |
| |
| // And just within this crate |
| let back = unsafe { |
| give_back(mem::transmute(magic)) |
| }; |
| assert_eq!(magic, back); |
| } |
