rust/src/test/run-pass/mir/mir_fat_ptr_drop.rs

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// run-pass
#![allow(unused_variables)]
#![allow(stable_features)]
2016-02-25 21:56:11 +00:00
// test that ordinary fat pointer operations work.
#![feature(braced_empty_structs)]
#![feature(rustc_attrs)]
use std::sync::atomic;
use std::sync::atomic::Ordering::SeqCst;
static COUNTER: atomic::AtomicUsize = atomic::ATOMIC_USIZE_INIT;
struct DropMe {
}
impl Drop for DropMe {
fn drop(&mut self) {
COUNTER.fetch_add(1, SeqCst);
}
}
fn fat_ptr_move_then_drop(a: Box<[DropMe]>) {
let b = a;
}
fn main() {
let a: Box<[DropMe]> = Box::new([DropMe { }]);
fat_ptr_move_then_drop(a);
assert_eq!(COUNTER.load(SeqCst), 1);
}