diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/Array/index-with-null-character.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/Array/index-with-null-character.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var testArray = [1, 2, 3]
+assertEq(testArray['0' + '\0'], undefined);
+assertEq(testArray['1' + '\0' + 'aaaa'], undefined)
+assertEq(testArray['\0' + '2'], undefined);
+assertEq(testArray['\0' + ' 2'], undefined);
+
+testArray['\0'] = 'hello';
+testArray[' \0'] = 'world';
+assertEq(testArray['\0'], 'hello');
+assertEq(testArray[' \0'], 'world');
+
+if (typeof reportCompare == 'function')
+    reportCompare(true, true);