---

yaml
---
r: 21653
b: refs/heads/snap-stage3
c: 55bd6ce
h: refs/heads/master
i:
  21651: 51f627f
v: v3

Author: catamorphism

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: e430a699f2c60890d9b86069fd0c68a70ece7120
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: b4e547d71aa379e702a737550e479116914b19cf
+refs/heads/snap-stage3: 55bd6cee2ff9123c68d7361e235ac99927f4b062
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/libstd/sort.rs

@@ -307,6 +307,28 @@ mod tests {
         let v2 = merge_sort(le, v1);
         assert v2 == ~[1, 2, 3];
     }
+
+    #[test]
+    fn test_merge_sort_stability()
+    {
+        // tjc: funny that we have to use parens
+        pure fn ile(x: &(&static/str), y: &(&static/str)) -> bool
+        {
+            unchecked            // to_lower is not pure...
+            {
+                let x = x.to_lower();
+                let y = y.to_lower();
+                x <= y
+            }
+        }
+
+        let names1 = ~["joe bob", "Joe Bob", "Jack Brown", "JOE Bob",
+                       "Sally Mae", "JOE BOB", "Alex Andy"];
+        let names2 = ~["Alex Andy", "Jack Brown", "joe bob", "Joe Bob",
+                       "JOE Bob", "JOE BOB", "Sally Mae"];
+        let names3 = merge_sort(ile, names1);
+        assert names3 == names2;
+    }
 }
 
 // Local Variables: