1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/async-await/generator-desc.rs b/tests/ui/async-await/generator-desc.rs
new file mode 100644
index 000000000..500812016
--- /dev/null
+++ b/tests/ui/async-await/generator-desc.rs
@@ -0,0 +1,16 @@
+// edition:2018
+#![feature(async_closure)]
+use std::future::Future;
+
+async fn one() {}
+async fn two() {}
+
+fn fun<F: Future<Output = ()>>(f1: F, f2: F) {}
+fn main() {
+    fun(async {}, async {});
+    //~^ ERROR mismatched types
+    fun(one(), two());
+    //~^ ERROR mismatched types
+    fun((async || {})(), (async || {})());
+    //~^ ERROR mismatched types
+}