6e8ff99958
As of RFC 18, struct layout is undefined. Opting into a C-compatible struct layout is now down with #[repr(C)]. For consistency, specifying a packed layout is now also down with #[repr(packed)]. Both can be specified. To fix errors caused by this, just add #[repr(C)] to the structs, and change #[packed] to #[repr(packed)] Closes #14309 [breaking-change]
25 lines
666 B
Rust
25 lines
666 B
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() {
|
|
assert_eq!(mem::size_of::<S<u8, u8>>(), 3);
|
|
|
|
assert_eq!(mem::size_of::<S<u64, u16>>(), 11);
|
|
}
|