// run-pass use std::sync::atomic::{AtomicUsize, Ordering}; static DROP_COUNTER: AtomicUsize = AtomicUsize::new(0); struct A(i32); impl Drop for A { fn drop(&mut self) { // update global drop count DROP_COUNTER.fetch_add(1, Ordering::SeqCst); } } static FOO: A = A(123); const BAR: A = A(456); impl A { const BAZ: A = A(789); } fn main() { assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 0); assert_eq!(&FOO.0, &123); assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 0); assert_eq!(BAR.0, 456); assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 1); assert_eq!(A::BAZ.0, 789); assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 2); }