| // Copyright 2013 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. |
| |
| |
| use std::mem; |
| |
| #[repr(packed)] |
| struct S<T, S> { |
| a: T, |
| b: u8, |
| c: S |
| } |
| |
| pub fn main() { |
| unsafe { |
| let s = S { a: 0xff_ff_ff_ffu32, b: 1, c: 0xaa_aa_aa_aa as i32 }; |
| let transd : [u8; 9] = mem::transmute(s); |
| // Don't worry about endianness, the numbers are palindromic. |
| assert_eq!(transd, |
| [0xff, 0xff, 0xff, 0xff, |
| 1, |
| 0xaa, 0xaa, 0xaa, 0xaa]); |
| |
| |
| let s = S { a: 1u8, b: 2u8, c: 0b10000001_10000001 as i16}; |
| let transd : [u8; 4] = mem::transmute(s); |
| // Again, no endianness problems. |
| assert_eq!(transd, |
| [1, 2, 0b10000001, 0b10000001]); |
| } |
| } |
