44 lines
1.1 KiB
Rust
44 lines
1.1 KiB
Rust
// Copyright 2012 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::size_of;
|
|
|
|
// The two enums that follow are designed so that bugs trigger layout optimization.
|
|
// Specifically, if either of the following reprs used here is not detected by the compiler,
|
|
// then the sizes will be wrong.
|
|
|
|
#[repr(C, u8)]
|
|
enum E1 {
|
|
A(u8, u16, u8),
|
|
B(u8, u16, u8)
|
|
}
|
|
|
|
#[repr(u8, C)]
|
|
enum E2 {
|
|
A(u8, u16, u8),
|
|
B(u8, u16, u8)
|
|
}
|
|
|
|
// From pr 37429
|
|
|
|
#[repr(C,packed)]
|
|
pub struct p0f_api_query {
|
|
pub magic: u32,
|
|
pub addr_type: u8,
|
|
pub addr: [u8; 16],
|
|
}
|
|
|
|
pub fn main() {
|
|
assert_eq!(size_of::<E1>(), 6);
|
|
assert_eq!(size_of::<E2>(), 6);
|
|
assert_eq!(size_of::<p0f_api_query>(), 21);
|
|
}
|