// run-pass // revisions: mirunsafeck thirunsafeck // [thirunsafeck]compile-flags: -Z thir-unsafeck #![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(); }