diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-eval-12.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-eval-12.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// 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
+dbg.onDebuggerStatement = function (frame) {
+  var args = frame.older.environment.parent.getVariable('arguments');
+  assertEq(args.missingArguments, true);
+};
+g.eval("function h() { debugger; }");
+g.eval("function f() { var x = 0; return function() { x++; h() } }");
+g.eval("f('ponies')()");