62 lines
1.1 KiB
Rust
62 lines
1.1 KiB
Rust
//@ run-pass
|
|
|
|
//@ revisions: default nomiropt
|
|
//@[nomiropt]compile-flags: -Z mir-opt-level=0
|
|
|
|
#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
|
|
|
|
use std::ops::Coroutine;
|
|
use std::pin::Pin;
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
|
|
|
static A: AtomicUsize = AtomicUsize::new(0);
|
|
|
|
struct B;
|
|
|
|
impl Drop for B {
|
|
fn drop(&mut self) {
|
|
A.fetch_add(1, Ordering::SeqCst);
|
|
}
|
|
}
|
|
|
|
|
|
fn test() -> bool { true }
|
|
fn test2() -> bool { false }
|
|
|
|
fn main() {
|
|
t1();
|
|
t2();
|
|
}
|
|
|
|
fn t1() {
|
|
let mut a = #[coroutine] || {
|
|
let b = B;
|
|
if test() {
|
|
drop(b);
|
|
}
|
|
yield;
|
|
};
|
|
|
|
let n = A.load(Ordering::SeqCst);
|
|
Pin::new(&mut a).resume(());
|
|
assert_eq!(A.load(Ordering::SeqCst), n + 1);
|
|
Pin::new(&mut a).resume(());
|
|
assert_eq!(A.load(Ordering::SeqCst), n + 1);
|
|
}
|
|
|
|
fn t2() {
|
|
let mut a = #[coroutine] || {
|
|
let b = B;
|
|
if test2() {
|
|
drop(b);
|
|
}
|
|
yield;
|
|
};
|
|
|
|
let n = A.load(Ordering::SeqCst);
|
|
Pin::new(&mut a).resume(());
|
|
assert_eq!(A.load(Ordering::SeqCst), n);
|
|
Pin::new(&mut a).resume(());
|
|
assert_eq!(A.load(Ordering::SeqCst), n + 1);
|
|
}
|