diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-getOwnPropertyNames-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-getOwnPropertyNames-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+// obj.getOwnPropertyNames() works when obj's referent is itself a cross-compartment wrapper.
+
+var g = newGlobal();
+var dbg = Debugger();
+var gobj = dbg.addDebuggee(g);
+g.p = {xyzzy: 8};  // makes a cross-compartment wrapper
+assertEq(gobj.getOwnPropertyDescriptor("p").value.getOwnPropertyDescriptor("xyzzy").value, 8);