090040bf40
for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change]
46 lines
1.1 KiB
Rust
46 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.
|
|
|
|
#![feature(macro_rules)]
|
|
|
|
use std::mem;
|
|
|
|
enum E<T> { Thing(int, T), Nothing((), ((), ()), [i8, ..0]) }
|
|
struct S<T>(int, T);
|
|
|
|
// These are macros so we get useful assert messages.
|
|
|
|
macro_rules! check_option {
|
|
($T:ty) => {
|
|
assert_eq!(mem::size_of::<Option<$T>>(), mem::size_of::<$T>());
|
|
}
|
|
}
|
|
|
|
macro_rules! check_fancy {
|
|
($T:ty) => {
|
|
assert_eq!(mem::size_of::<E<$T>>(), mem::size_of::<S<$T>>());
|
|
}
|
|
}
|
|
|
|
macro_rules! check_type {
|
|
($T:ty) => {{
|
|
check_option!($T);
|
|
check_fancy!($T);
|
|
}}
|
|
}
|
|
|
|
pub fn main() {
|
|
check_type!(&'static int);
|
|
check_type!(Box<int>);
|
|
check_type!(@int);
|
|
check_type!(~str);
|
|
check_type!(extern fn());
|
|
}
|