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//@ run-pass
#![allow(unused_imports)]
//@ aux-build:union.rs
extern crate union;
use std::mem::{size_of, align_of, zeroed};
union U {
a: u8,
b: u16
}
fn local() {
assert_eq!(size_of::<U>(), 2);
assert_eq!(align_of::<U>(), 2);
let u = U { a: 10 };
unsafe {
assert_eq!(u.a, 10);
let U { a } = u;
assert_eq!(a, 10);
}
let mut w = U { b: 0 };
unsafe {
assert_eq!(w.a, 0);
assert_eq!(w.b, 0);
w.a = 1;
assert_eq!(w.a, 1);
assert_eq!(w.b.to_le(), 1);
}
}
fn xcrate() {
assert_eq!(size_of::<union::U>(), 2);
assert_eq!(align_of::<union::U>(), 2);
let u = union::U { a: 10 };
unsafe {
assert_eq!(u.a, 10);
let union::U { a } = u;
assert_eq!(a, 10);
}
let mut w = union::U { b: 0 };
unsafe {
assert_eq!(w.a, 0);
assert_eq!(w.b, 0);
w.a = 1;
assert_eq!(w.a, 1);
assert_eq!(w.b.to_le(), 1);
}
}
fn main() {
local();
xcrate();
}
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