mirror of https://github.com/rust-lang/rust
24 lines
514 B
Rust
24 lines
514 B
Rust
//@ run-pass
|
|
use std::mem;
|
|
|
|
#[repr(packed)]
|
|
#[allow(dead_code)]
|
|
struct S4(u8,[u8; 3]);
|
|
|
|
#[repr(packed)]
|
|
#[allow(dead_code)]
|
|
struct S5(u8,u32);
|
|
|
|
pub fn main() {
|
|
unsafe {
|
|
let s4 = S4(1, [2,3,4]);
|
|
let transd : [u8; 4] = mem::transmute(s4);
|
|
assert_eq!(transd, [1, 2, 3, 4]);
|
|
|
|
let s5 = S5(1, 0xff_00_00_ff);
|
|
let transd : [u8; 5] = mem::transmute(s5);
|
|
// Don't worry about endianness, the u32 is palindromic.
|
|
assert_eq!(transd, [1, 0xff, 0, 0, 0xff]);
|
|
}
|
|
}
|