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// Copyright 2013-2014 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(repr_packed)]
use std::fmt;
use std::mem;
#[repr(packed)]
#[derive(Copy, Clone)]
struct Foo1 {
bar: u8,
baz: u64
}
impl PartialEq for Foo1 {
fn eq(&self, other: &Foo1) -> bool {
self.bar == other.bar && self.baz == other.baz
}
}
impl fmt::Debug for Foo1 {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let bar = self.bar;
let baz = self.baz;
f.debug_struct("Foo1")
.field("bar", &bar)
.field("baz", &baz)
.finish()
}
}
#[repr(packed(2))]
#[derive(Copy, Clone)]
struct Foo2 {
bar: u8,
baz: u64
}
impl PartialEq for Foo2 {
fn eq(&self, other: &Foo2) -> bool {
self.bar == other.bar && self.baz == other.baz
}
}
impl fmt::Debug for Foo2 {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let bar = self.bar;
let baz = self.baz;
f.debug_struct("Foo2")
.field("bar", &bar)
.field("baz", &baz)
.finish()
}
}
#[repr(C, packed(4))]
#[derive(Copy, Clone)]
struct Foo4C {
bar: u8,
baz: u64
}
impl PartialEq for Foo4C {
fn eq(&self, other: &Foo4C) -> bool {
self.bar == other.bar && self.baz == other.baz
}
}
impl fmt::Debug for Foo4C {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let bar = self.bar;
let baz = self.baz;
f.debug_struct("Foo4C")
.field("bar", &bar)
.field("baz", &baz)
.finish()
}
}
pub fn main() {
let foo1s = [Foo1 { bar: 1, baz: 2 }; 10];
assert_eq!(mem::align_of::<[Foo1; 10]>(), 1);
assert_eq!(mem::size_of::<[Foo1; 10]>(), 90);
for i in 0..10 {
assert_eq!(foo1s[i], Foo1 { bar: 1, baz: 2});
}
for &foo in &foo1s {
assert_eq!(foo, Foo1 { bar: 1, baz: 2 });
}
let foo2s = [Foo2 { bar: 1, baz: 2 }; 10];
assert_eq!(mem::align_of::<[Foo2; 10]>(), 2);
assert_eq!(mem::size_of::<[Foo2; 10]>(), 100);
for i in 0..10 {
assert_eq!(foo2s[i], Foo2 { bar: 1, baz: 2});
}
for &foo in &foo2s {
assert_eq!(foo, Foo2 { bar: 1, baz: 2 });
}
let foo4s = [Foo4C { bar: 1, baz: 2 }; 10];
assert_eq!(mem::align_of::<[Foo4C; 10]>(), 4);
assert_eq!(mem::size_of::<[Foo4C; 10]>(), 120);
for i in 0..10 {
assert_eq!(foo4s[i], Foo4C { bar: 1, baz: 2});
}
for &foo in &foo4s {
assert_eq!(foo, Foo4C { bar: 1, baz: 2 });
}
}
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