1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/async-await/in-trait/missing-send-bound.rs b/tests/ui/async-await/in-trait/missing-send-bound.rs
new file mode 100644
index 000000000..78922b59b
--- /dev/null
+++ b/tests/ui/async-await/in-trait/missing-send-bound.rs
@@ -0,0 +1,21 @@
+// edition:2021
+
+#![feature(async_fn_in_trait)]
+//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
+
+trait Foo {
+    async fn bar();
+}
+
+async fn test<T: Foo>() {
+    T::bar().await;
+}
+
+fn test2<T: Foo>() {
+    assert_is_send(test::<T>());
+    //~^ ERROR future cannot be sent between threads safely
+}
+
+fn assert_is_send(_: impl Send) {}
+
+fn main() {}