Context-allocate all parameters in generators

test/mjsunit/regress/regress-3280.js

Index: test/mjsunit/regress/regress-3280.js
diff --git a/test/mjsunit/regress/regress-3280.js b/test/mjsunit/regress/regress-3280.js
new file mode 100644
index 0000000000000000000000000000000000000000..2fc72cc867722bc0bc76a9ec7a4b068da4a07872
--- /dev/null
+++ b/test/mjsunit/regress/regress-3280.js
@@ -0,0 +1,25 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-generators --expose-debug-as debug
+
+var Debug = debug.Debug;
+
+var listener_called;
+
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Break) {
+    listener_called = true;
+    exec_state.frame().allScopes();
+  }
+}
+
+Debug.setListener(listener);
+
+function *generator_local_2(a) {
+  debugger;
+}
+generator_local_2(1).next();
+
+assertTrue(listener_called, "listener not called");