39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
// 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]);
|
|
}
|
|
}
|