diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Object-script.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Object-script.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+// |jit-test| debug
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    var arr = frame.arguments;
+    assertEq(arr[0].script instanceof Debugger.Script, true);
+    assertEq(arr[1].script, undefined);
+    assertEq(arr[2].script, undefined);
+    hits++;
+};
+
+g.eval("(function () { debugger; })(function g(){}, {}, Math.atan2);");
+assertEq(hits, 1);