rust/tests/ui/structs-enums/enum-alignment.rs

25 lines
424 B
Rust

//@ run-pass
#![allow(dead_code)]
#![allow(deprecated)]
use std::mem;
fn addr_of<T>(ptr: &T) -> usize {
ptr as *const T as usize
}
fn is_aligned<T>(ptr: &T) -> bool {
unsafe {
let addr: usize = mem::transmute(ptr);
(addr % mem::min_align_of::<T>()) == 0
}
}
pub fn main() {
let x = Some(0u64);
match x {
None => panic!(),
Some(ref y) => assert!(is_aligned(y))
}
}