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
|
// run-pass
#![allow(overflowing_literals)]
#![allow(dead_code)]
macro_rules! check {
($m:ident, $t:ty, $v:expr) => {{
mod $m {
use std::mem::size_of;
#[derive(Copy, Clone, Debug)]
enum E {
V = $v,
A = 0
}
static C: E = E::V;
pub fn check() {
assert_eq!(size_of::<E>(), size_of::<$t>());
assert_eq!(E::V as $t, $v as $t);
assert_eq!(C as $t, $v as $t);
assert_eq!(format!("{:?}", E::V), "V".to_string());
assert_eq!(format!("{:?}", C), "V".to_string());
}
}
$m::check();
}}
}
pub fn main() {
check!(a, u8, 0x17);
check!(b, u8, 0xe8);
check!(c, u16, 0x1727);
check!(d, u16, 0xe8d8);
check!(e, u32, 0x17273747);
check!(f, u32, 0xe8d8c8b8);
check!(z, i8, 0x17);
check!(y, i8, -0x17);
check!(x, i16, 0x1727);
check!(w, i16, -0x1727);
check!(v, i32, 0x17273747);
check!(u, i32, -0x17273747);
enum Simple { A, B }
assert_eq!(::std::mem::size_of::<Simple>(), 1);
}
|
