1 files changed, 38 insertions, 0 deletions
diff --git a/tests/ui/async-await/edition-deny-async-fns-2015.rs b/tests/ui/async-await/edition-deny-async-fns-2015.rs
new file mode 100644
index 00000000000..6bd6d879a4a
--- /dev/null
+++ b/tests/ui/async-await/edition-deny-async-fns-2015.rs
@@ -0,0 +1,38 @@
+// edition:2015
+
+async fn foo() {} //~ ERROR `async fn` is not permitted in Rust 2015
+
+fn baz() { async fn foo() {} } //~ ERROR `async fn` is not permitted in Rust 2015
+
+async fn async_baz() { //~ ERROR `async fn` is not permitted in Rust 2015
+    async fn bar() {} //~ ERROR `async fn` is not permitted in Rust 2015
+}
+
+struct Foo {}
+
+impl Foo {
+    async fn foo() {} //~ ERROR `async fn` is not permitted in Rust 2015
+}
+
+trait Bar {
+    async fn foo() {} //~ ERROR `async fn` is not permitted in Rust 2015
+    //~^ ERROR functions in traits cannot be declared `async`
+}
+
+fn main() {
+    macro_rules! accept_item { ($x:item) => {} }
+
+    accept_item! {
+        async fn foo() {} //~ ERROR `async fn` is not permitted in Rust 2015
+    }
+
+    accept_item! {
+        impl Foo {
+            async fn bar() {} //~ ERROR `async fn` is not permitted in Rust 2015
+        }
+    }
+
+    let inside_closure = || {
+        async fn bar() {} //~ ERROR `async fn` is not permitted in Rust 2015
+    };
+}