1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/compile-fail/wf-trait-bound.rs b/src/test/compile-fail/wf-trait-bound.rs
new file mode 100644
index 00000000000..147b3ce236d
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+++ b/src/test/compile-fail/wf-trait-bound.rs
@@ -0,0 +1,25 @@
+// Copyright 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.
+
+// Test that we check supertrait bounds for WFedness.
+
+#![feature(associated_type_defaults)]
+#![feature(rustc_attrs)]
+#![allow(dead_code)]
+
+trait ExtraCopy<T:Copy> { }
+
+trait SomeTrait<T,U> //~ WARN E0277
+    where T: ExtraCopy<U>
+{
+}
+
+#[rustc_error]
+fn main() { } //~ ERROR compilation successful