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

   1 // run-pass
   2 #![allow(dead_code)]
   3 #![allow(deprecated)]
   4
   5 use std::mem;
   6
   7 fn addr_of<T>(ptr: &T) -> usize {
   8     ptr as *const T as usize
   9 }
  10
  11 fn is_aligned<T>(ptr: &T) -> bool {
  12     unsafe {
  13         let addr: usize = mem::transmute(ptr);
  14         (addr % mem::min_align_of::<T>()) == 0
  15     }
  16 }
  17
  18 pub fn main() {
  19     let x = Some(0u64);
  20     match x {
  21         None => panic!(),
  22         Some(ref y) => assert!(is_aligned(y))
  23     }
  24 }