diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Debugger-debuggees-05.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Debugger-debuggees-05.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// addDebuggee returns different Debugger.Object wrappers for different Debugger objects.
+
+var g = newGlobal();
+var dbg1 = new Debugger;
+var gw1 = dbg1.addDebuggee(g);
+var dbg2 = new Debugger;
+var gw2 = dbg2.addDebuggee(g);
+assertEq(gw1 !== gw2, true);