---

yaml
---
r: 220730
b: refs/heads/master
c: 4e51763
h: refs/heads/master
v: v3

Author: bors

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 6b64826469e7c8f31979389d97d565ec981a5c65
+refs/heads/master: 4e51763e6428580f2b3275cd7076492376801a1e
 refs/heads/snap-stage3: d4432b37378ec55450e06799f5344b4b0f4b94e0
 refs/heads/try: b53c0f93eedcdedd4fd89bccc5a3a09d1c5cd23e
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105

trunk/src/test/compile-fail/issue-20825.rs

@@ -0,0 +1,20 @@
+// Copyright 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.
+
+pub trait Subscriber {
+    type Input;
+}
+
+pub trait Processor: Subscriber<Input = Self::Input> {
+    //~^ ERROR unsupported cyclic reference between types/traits detected [E0391]
+    type Input;
+}
+
+fn main() {}

trunk/src/test/run-pass/issue-20825.rs

@@ -0,0 +1,19 @@
+// Copyright 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.
+
+pub trait Subscriber {
+    type Input;
+}
+
+pub trait Processor: Subscriber<Input = <Self as Processor>::Input> {
+    type Input;
+}
+
+fn main() {}