1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/unconstrained-ref.rs b/src/test/ui/unconstrained-ref.rs
new file mode 100644
index 00000000000..6aaed789716
--- /dev/null
+++ b/src/test/ui/unconstrained-ref.rs
@@ -0,0 +1,18 @@
+// Copyright 2012-2015 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.
+
+struct S<'a, T:'a> {
+    o: &'a Option<T>
+}
+
+fn main() {
+    S { o: &None }; //~ ERROR type annotations needed [E0282]
+                    //~| NOTE cannot infer type for `T`
+}