From 80c71c839acde882e53ee9505a05b81e4af33ab7 Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Fri, 8 Mar 2013 20:05:20 -0500
Subject: [PATCH] add a TotalOrd impl for the unit type

---
 src/libcore/nil.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/libcore/nil.rs b/src/libcore/nil.rs
index cf2af7e38cc..742e5a047d6 100644
--- a/src/libcore/nil.rs
+++ b/src/libcore/nil.rs
@@ -15,7 +15,7 @@ Functions for the unit type.
 */
 
 #[cfg(notest)]
-use cmp::{Eq, Ord};
+use cmp::{Eq, Ord, TotalOrd, Ordering, Equal};
 
 #[cfg(notest)]
 impl Eq for () {
@@ -37,3 +37,8 @@ impl Ord for () {
     pure fn gt(&self, _other: &()) -> bool { false }
 }
 
+#[cfg(notest)]
+impl TotalOrd for () {
+    #[inline(always)]
+    pure fn cmp(&self, _other: &()) -> Ordering { Equal }
+}