1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/traits/trait-inheritance-cast.rs b/src/test/ui/run-pass/traits/trait-inheritance-cast.rs
new file mode 100644
index 00000000000..0de2c586930
--- /dev/null
+++ b/src/test/ui/run-pass/traits/trait-inheritance-cast.rs
@@ -0,0 +1,41 @@
+// Copyright 2012-2014 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.
+
+// Testing that supertrait methods can be called on subtrait object types
+
+
+trait Foo {
+    fn f(&self) -> isize;
+}
+
+trait Bar : Foo {
+    fn g(&self) -> isize;
+}
+
+struct A {
+    x: isize
+}
+
+impl Foo for A {
+    fn f(&self) -> isize { 10 }
+}
+
+impl Bar for A {
+    fn g(&self) -> isize { 20 }
+}
+
+pub fn main() {
+    let a = &A { x: 3 };
+    let afoo = a as &Foo;
+    let abar = a as &Bar;
+    assert_eq!(afoo.f(), 10);
+    assert_eq!(abar.g(), 20);
+    assert_eq!(abar.f(), 10);
+}