File: enum-alignment.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (24 lines) | stat: -rw-r--r-- 424 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
//@ 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))
    }
}