summary refs log tree commit diff
path: root/src/test/run-pass/packed-struct-vec.rs
blob: 57407b8422371be2152d5d30207e1c78a17f6c8d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
// 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.

use std::fmt;
use std::mem;

#[repr(packed)]
#[derive(Copy, Clone)]
struct Foo {
    bar: u8,
    baz: u64
}

impl PartialEq for Foo {
    fn eq(&self, other: &Foo) -> bool {
        self.bar == other.bar && self.baz == other.baz
    }
}

impl fmt::Debug for Foo {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        let bar = self.bar;
        let baz = self.baz;

        f.debug_struct("Foo")
            .field("bar", &bar)
            .field("baz", &baz)
            .finish()
    }
}

pub fn main() {
    let foos = [Foo { bar: 1, baz: 2 }; 10];

    assert_eq!(mem::size_of::<[Foo; 10]>(), 90);

    for i in 0..10 {
        assert_eq!(foos[i], Foo { bar: 1, baz: 2});
    }

    for &foo in &foos {
        assert_eq!(foo, Foo { bar: 1, baz: 2 });
    }
}