From 81adf44cb3b8d0af0647d94127562913fc883d8d Mon Sep 17 00:00:00 2001
From: Ivan Krechetov <ivan.krechetov@gmail.com>
Date: Sat, 10 Nov 2012 12:07:09 +0100
Subject: [PATCH] Avoid mutating the passed array on initialization

---
 moment.js             | 2 +-
 test/moment/create.js | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/moment.js b/moment.js
index 87123e3f6..12ae51f48 100644
--- a/moment.js
+++ b/moment.js
@@ -806,7 +806,7 @@
         } else if (typeof input === 'string') {
             makeDateFromString(config);
         } else if (isArray(input)) {
-            config._a = input;
+            config._a = input.slice(0);
             dateFromArray(config);
         } else {
             config._d = input instanceof Date ? input : new Date(input);
diff --git a/test/moment/create.js b/test/moment/create.js
index 099ef018b..41defc753 100644
--- a/test/moment/create.js
+++ b/test/moment/create.js
@@ -14,6 +14,14 @@ exports.create = {
         test.done();
     },
 
+    "array copying": function(test) {
+        var importantArray = [2009, 11];
+        test.expect(1);
+        moment(importantArray);
+        test.deepEqual(importantArray, [2009, 11], "initializer should not mutate the original array");
+        test.done();
+    },
+
     "number" : function(test) {
         test.expect(3);
         test.ok(moment(1000).toDate() instanceof Date, "1000");
-- 
2.47.2