diff --git a/js/tests/ecma_3/Function/arguments-002.js b/js/tests/ecma_3/Function/arguments-002.js
new file mode 100755
index 00000000000..78005560a72
--- /dev/null
+++ b/js/tests/ecma_3/Function/arguments-002.js
@@ -0,0 +1,73 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Brendan Eich
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+var gTestfile = 'arguments-002.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 383269;
+var summary = 'Allow override of arguments';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  var expect1 = '33,42';
+  var expect2 = 33;
+  var actual1 = '';
+  var actual2 = '';
+
+  function f(){
+    var a=arguments; actual1 = a[0]; arguments=42; actual1 += ',' + arguments; return a;
+  }
+
+  actual2 = f(33)[0];
+
+  expect = expect1 + ':' + expect2;
+  actual = actual1 + ':' + actual2;
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}
diff --git a/js/tests/js1_5/GC/regress-383269-01.js b/js/tests/js1_5/GC/regress-383269-01.js
new file mode 100755
index 00000000000..5f5241ae137
--- /dev/null
+++ b/js/tests/js1_5/GC/regress-383269-01.js
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+var gTestfile = 'regress-383269-01.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 383269;
+var summary = 'Leak related to arguments object';
+var actual = 'No Leak';
+var expect = 'No Leak';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  function generate_big_object_graph()
+  {
+    var root = {};
+    f(root, 17);
+    return root;
+    function f(parent, depth) {
+      if (depth == 0)
+	return;
+      --depth;
+      f(parent.a = {}, depth);
+      f(parent.b = {}, depth);
+    }
+  }
+
+  function outer() {  var x = arguments; return function inner() { return x }; }
+
+  function timed_gc()
+  {
+    var t1 = Date.now();
+    gc();
+    return Date.now() - t1;
+  }
+
+  outer(1);
+  gc();
+  var base_time = timed_gc();
+
+  var f = outer(generate_big_object_graph());
+  f = null;
+  gc();
+  var time = timed_gc();
+
+  if (time > (base_time + 1) * 3)
+    throw "generate_big_object_graph() leaked, base_gc_time="+base_time+", last_gc_time="+time;
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}
diff --git a/js/tests/js1_5/GC/regress-383269-02.js b/js/tests/js1_5/GC/regress-383269-02.js
new file mode 100755
index 00000000000..5d0d9c092a3
--- /dev/null
+++ b/js/tests/js1_5/GC/regress-383269-02.js
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+var gTestfile = 'regress-383269-02.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 383269;
+var summary = 'Leak related to arguments object';
+var actual = 'No Leak';
+var expect = 'No Leak';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  function generate_big_object_graph()
+  {
+    var root = {};
+    f(root, 17);
+    return root;
+    function f(parent, depth) {
+      if (depth == 0)
+        return;
+      --depth;
+      f(parent.a = {}, depth);
+      f(parent.b = {}, depth);
+    }
+  }
+
+  function f(obj) {
+    with (obj)
+      return arguments;
+  }
+
+  function timed_gc()
+  {
+    var t1 = Date.now();
+    gc();
+    return Date.now() - t1;
+  }
+
+  var x = f({});
+  x = null;
+  gc();
+  var base_time = timed_gc();
+
+  x = f(generate_big_object_graph());
+  x = null;
+  gc();
+  var time = timed_gc();
+
+  if (time > (base_time + 10) * 3)
+    throw "generate_big_object_graph() leaked, base_gc_time="+base_time+", last_gc_time="+time;
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}