auto merge of #8936 : pnkfelix/rust/fsk-issue-2355-testcase, r=alexcrichton

Fix #2355.

src/test/run-pass/trait-bounds-recursion.rs

@@ -0,0 +1,27 @@
+// Copyright 2013 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.
+
+trait I { fn i(&self) -> Self; }
+
+trait A<T:I> {
+    fn id(x:T) -> T { x.i() }
+}
+
+trait J<T> { fn j(&self) -> Self; }
+
+trait B<T:J<T>> {
+    fn id(x:T) -> T { x.j() }
+}
+
+trait C {
+    fn id<T:J<T>>(x:T) -> T { x.j() }
+}
+
+fn main() { }