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//! Tests that panics inside a coroutine will correctly drop the initial resume argument.
//@ run-pass
//@ needs-unwind
#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
use std::ops::Coroutine;
use std::panic::{catch_unwind, AssertUnwindSafe};
use std::pin::Pin;
use std::sync::atomic::{AtomicUsize, Ordering};
static DROP: AtomicUsize = AtomicUsize::new(0);
struct Dropper {}
impl Drop for Dropper {
fn drop(&mut self) {
DROP.fetch_add(1, Ordering::SeqCst);
}
}
fn main() {
let mut gen = #[coroutine] |_arg| {
if true {
panic!();
}
yield ();
};
let mut gen = Pin::new(&mut gen);
assert_eq!(DROP.load(Ordering::Acquire), 0);
let res = catch_unwind(AssertUnwindSafe(|| gen.as_mut().resume(Dropper {})));
assert!(res.is_err());
assert_eq!(DROP.load(Ordering::Acquire), 1);
}
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