1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/async-await/async-trait-fn.rs b/src/test/ui/async-await/async-trait-fn.rs
new file mode 100644
index 000000000..e2062e827
--- /dev/null
+++ b/src/test/ui/async-await/async-trait-fn.rs
@@ -0,0 +1,11 @@
+// edition:2018
+trait T {
+    async fn foo() {} //~ ERROR functions in traits cannot be declared `async`
+    async fn bar(&self) {} //~ ERROR functions in traits cannot be declared `async`
+    async fn baz() { //~ ERROR functions in traits cannot be declared `async`
+        // Nested item must not ICE.
+        fn a() {}
+    }
+}
+
+fn main() {}