| // 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; |
| |
| enum E<T> { Thing(isize, T), Nothing((), ((), ()), [i8; 0]) } |
| struct S<T>(isize, 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 isize); |
| check_type!(Box<isize>); |
| check_type!(extern fn()); |
| } |