rust/tests/ui/issues/issue-27997.rs

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// 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);
}