diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/JSON/stringify-ignore-noncallable-toJSON.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/JSON/stringify-ignore-noncallable-toJSON.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+var gTestfile = 'stringify-ignore-noncallable-toJSON.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 584909;
+var summary = "If the toJSON property isn't callable, don't try to call it";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var obj =
+  {
+    p: { toJSON: null },
+    m: { toJSON: {} }
+  };
+
+assertEq(JSON.stringify(obj), '{"p":{"toJSON":null},"m":{"toJSON":{}}}');
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");