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