1 files changed, 20 insertions, 0 deletions
diff --git a/third_party/rust/tokio/tests/join_handle_panic.rs b/third_party/rust/tokio/tests/join_handle_panic.rs
new file mode 100644
index 0000000000..f7de92d417
--- /dev/null
+++ b/third_party/rust/tokio/tests/join_handle_panic.rs
@@ -0,0 +1,20 @@
+#![warn(rust_2018_idioms)]
+#![cfg(feature = "full")]
+
+struct PanicsOnDrop;
+
+impl Drop for PanicsOnDrop {
+    fn drop(&mut self) {
+        panic!("I told you so");
+    }
+}
+
+#[tokio::test]
+async fn test_panics_do_not_propagate_when_dropping_join_handle() {
+    let join_handle = tokio::spawn(async move { PanicsOnDrop });
+
+    // only drop the JoinHandle when the task has completed
+    // (which is difficult to synchronize precisely)
+    tokio::time::sleep(std::time::Duration::from_millis(3)).await;
+    drop(join_handle);
+}