diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-getOwnPropertyDescriptor-surfaces-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-getOwnPropertyDescriptor-surfaces-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// The argument to Debugger.Object.prototype.getOwnPropertyDescriptor can be an object.
+var g = newGlobal();
+g.eval("var obj = {};");
+
+var dbg = Debugger(g);
+var obj;
+dbg.onDebuggerStatement = function (frame) { obj = frame.eval("obj").return; };
+g.eval("debugger;");
+
+var nameobj = {toString: function () { return 'x'; }};
+assertEq(obj.getOwnPropertyDescriptor(nameobj), undefined);
+g.obj.x = 17;
+var desc = obj.getOwnPropertyDescriptor(nameobj);
+assertEq(desc.value, 17);