diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-eval-11.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-eval-11.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+// The arguments can escape from a function via a debugging hook.
+
+var g = newGlobal();
+var dbg = new Debugger(g);
+
+// capture arguments object and test function
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+    assertEq(frame.older.eval('arguments[0]').return, 'ponies');
+    hits++;
+};
+g.eval("function g() { debugger; }");
+g.eval("function f() { g(); }");
+g.eval("f('ponies')");
+assertEq(hits, 1);