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diff --git a/Source/JavaScriptCore/runtime/ExceptionHelpers.h b/Source/JavaScriptCore/runtime/ExceptionHelpers.h
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+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ExceptionHelpers_h
+#define ExceptionHelpers_h
+
+#include "JSObject.h"
+
+namespace JSC {
+
+JSObject* createInterruptedExecutionException(JSGlobalData*);
+bool isInterruptedExecutionException(JSObject*);
+bool isInterruptedExecutionException(JSValue);
+
+JSObject* createTerminatedExecutionException(JSGlobalData*);
+bool isTerminatedExecutionException(JSObject*);
+bool isTerminatedExecutionException(JSValue);
+
+JSObject* createStackOverflowError(ExecState*);
+JSObject* createStackOverflowError(JSGlobalObject*);
+JSObject* createOutOfMemoryError(JSGlobalObject*);
+JSObject* createUndefinedVariableError(ExecState*, const Identifier&);
+JSObject* createNotAnObjectError(ExecState*, JSValue);
+JSObject* createInvalidParamError(ExecState*, const char* op, JSValue);
+JSObject* createNotAConstructorError(ExecState*, JSValue);
+JSObject* createNotAFunctionError(ExecState*, JSValue);
+JSObject* createErrorForInvalidGlobalAssignment(ExecState*, const UString&);
+
+JSObject* throwOutOfMemoryError(ExecState*);
+JSObject* throwStackOverflowError(ExecState*);
+
+
+class InterruptedExecutionError : public JSNonFinalObject {
+private:
+    InterruptedExecutionError(JSGlobalData& globalData)
+        : JSNonFinalObject(globalData, globalData.interruptedExecutionErrorStructure.get())
+    {
+    }
+
+    static JSValue defaultValue(const JSObject*, ExecState*, PreferredPrimitiveType);
+
+public:
+    typedef JSNonFinalObject Base;
+
+    static InterruptedExecutionError* create(JSGlobalData& globalData)
+    {
+        InterruptedExecutionError* error = new (NotNull, allocateCell<InterruptedExecutionError>(globalData.heap)) InterruptedExecutionError(globalData);
+        error->finishCreation(globalData);
+        return error;
+    }
+
+    static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
+    {
+        return Structure::create(globalData, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info);
+    }
+
+    static JS_EXPORTDATA const ClassInfo s_info;
+};
+
+class TerminatedExecutionError : public JSNonFinalObject {
+private:
+    TerminatedExecutionError(JSGlobalData& globalData)
+        : JSNonFinalObject(globalData, globalData.terminatedExecutionErrorStructure.get())
+    {
+    }
+
+    static JSValue defaultValue(const JSObject*, ExecState*, PreferredPrimitiveType);
+
+public:
+    typedef JSNonFinalObject Base;
+
+    static TerminatedExecutionError* create(JSGlobalData& globalData)
+    {
+        TerminatedExecutionError* error = new (NotNull, allocateCell<TerminatedExecutionError>(globalData.heap)) TerminatedExecutionError(globalData);
+        error->finishCreation(globalData);
+        return error;
+    }
+
+    static Structure* createStructure(JSGlobalData& globalData, JSGlobalObject* globalObject, JSValue prototype)
+    {
+        return Structure::create(globalData, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), &s_info);
+    }
+
+    static JS_EXPORTDATA const ClassInfo s_info;
+};
+
+} // namespace JSC
+
+#endif // ExceptionHelpers_h