diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// Debugger.Object referents can be transparent wrappers of objects in the debugger compartment.
+
+var g = newGlobal();
+g.f = function (a, b) { return a + "/" + b; };
+var dbg = Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    var f = frame.eval("f").return;
+    assertEq(f.call(null, "a", "b").return, "a/b");
+    hits++;
+};
+g.eval("debugger;");
+assertEq(hits, 1);