diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/arrayNatives.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/arrayNatives.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+
+/* Array natives applied to non-arrays. */
+
+var oa = {};
+Array.pop(oa);
+assertEq(oa.length, 0);
+
+var ob = {};
+Array.push(ob, "twelve");
+assertEq(ob.length, 1);
+
+var oc = {};
+Array.shift(oc);
+assertEq(oc.length, 0);
+
+var od = {};
+Array.unshift(od, "eight");
+assertEq(od.length, 1);