2 files changed, 18 insertions, 2 deletions
diff --git a/src/test/ui/error-codes/E0191.rs b/src/test/ui/error-codes/E0191.rs
index 489ebb033f8..c35c7e10f5a 100644
--- a/src/test/ui/error-codes/E0191.rs
+++ b/src/test/ui/error-codes/E0191.rs
@@ -14,5 +14,4 @@ trait Trait {
 
 type Foo = Trait; //~ ERROR E0191
 
-fn main() {
-}
+fn main() {}
diff --git a/src/test/ui/error-codes/E0719.rs b/src/test/ui/error-codes/E0719.rs
new file mode 100644
index 00000000000..951041124bb
--- /dev/null
+++ b/src/test/ui/error-codes/E0719.rs
@@ -0,0 +1,17 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(trait_alias)]
+
+trait I32Iterator = Iterator<Item = i32>;
+
+pub fn main() {
+    let _: &I32Iterator<Item = f32>; //~ ERROR E0719
+}