| //@ run-pass |
| use std::sync::atomic::{Ordering, AtomicUsize}; |
| |
| use std::mem; |
| struct S<U,V> { |
| _u: U, |
| size_of_u: usize, |
| _v: V, |
| size_of_v: usize |
| } |
| |
| impl<U, V> S<U, V> { |
| fn new(u: U, v: V) -> Self { |
| S { |
| _u: u, |
| size_of_u: mem::size_of::<U>(), |
| _v: v, |
| size_of_v: mem::size_of::<V>() |
| } |
| } |
| } |
| |
| static COUNT: AtomicUsize = AtomicUsize::new(0); |
| |
| impl<V, U> Drop for S<U, V> { |
| fn drop(&mut self) { |
| assert_eq!(mem::size_of::<U>(), self.size_of_u); |
| assert_eq!(mem::size_of::<V>(), self.size_of_v); |
| COUNT.store(COUNT.load(Ordering::SeqCst)+1, Ordering::SeqCst); |
| } |
| } |
| |
| fn main() { |
| assert_eq!(COUNT.load(Ordering::SeqCst), 0); |
| { S::new(0u8, 1u16); } |
| assert_eq!(COUNT.load(Ordering::SeqCst), 1); |
| } |
