From 6f7b5b1910e8211a8895ec3cfd3c421a5812b7d7 Mon Sep 17 00:00:00 2001
From: Johannes Oertel <johannes.oertel@uni-due.de>
Date: Sun, 26 Apr 2015 01:28:13 +0200
Subject: [PATCH] Add regression test for #22673.

---
 src/test/compile-fail/issue-22673.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/test/compile-fail/issue-22673.rs

diff --git a/src/test/compile-fail/issue-22673.rs b/src/test/compile-fail/issue-22673.rs
new file mode 100644
index 00000000000..6983d1f0706
--- /dev/null
+++ b/src/test/compile-fail/issue-22673.rs
@@ -0,0 +1,16 @@
+// 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.
+
+trait Expr : PartialEq<Self::Item> {
+    //~^ ERROR: unsupported cyclic reference between types/traits detected
+    type Item = Expr;
+}
+
+fn main() {}