diff -r 000000000000 -r 4f2f89ce4247 JavaScriptCore/runtime/ErrorInstance.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/ErrorInstance.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2003, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "ErrorInstance.h"
+
+namespace JSC {
+
+const ClassInfo ErrorInstance::info = { "Error", 0, 0, 0 };
+
+ErrorInstance::ErrorInstance(NonNullPassRefPtr<Structure> structure)
+    : JSObject(structure)
+{
+}
+
+ErrorInstance::ErrorInstance(JSGlobalData* globalData, NonNullPassRefPtr<Structure> structure, const UString& message)
+    : JSObject(structure)
+{
+    putDirect(globalData->propertyNames->message, jsString(globalData, message));
+}
+
+ErrorInstance* ErrorInstance::create(JSGlobalData* globalData, NonNullPassRefPtr<Structure> structure, const UString& message)
+{
+    return new (globalData) ErrorInstance(globalData, structure, message);
+}
+
+ErrorInstance* ErrorInstance::create(ExecState* exec, NonNullPassRefPtr<Structure> structure, JSValue message)
+{
+    if (message.isUndefined())
+        return new (exec) ErrorInstance(structure);
+    return new (exec) ErrorInstance(&exec->globalData(), structure, message.toString(exec));
+}
+
+} // namespace JSC