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diff --git a/Source/JavaScriptCore/runtime/JSFunctionInlines.h b/Source/JavaScriptCore/runtime/JSFunctionInlines.h
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+++ b/Source/JavaScriptCore/runtime/JSFunctionInlines.h
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+/*
+ * Copyright (C) 2013, 2015 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
+ * 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 JSFunctionInlines_h
+#define JSFunctionInlines_h
+
+#include "Executable.h"
+#include "JSFunction.h"
+
+namespace JSC {
+
+inline JSFunction* JSFunction::createWithInvalidatedReallocationWatchpoint(
+    VM& vm, FunctionExecutable* executable, JSScope* scope)
+{
+    ASSERT(executable->singletonFunction()->hasBeenInvalidated());
+    return createImpl(vm, executable, scope);
+}
+
+inline JSFunction::JSFunction(VM& vm, FunctionExecutable* executable, JSScope* scope)
+    : Base(vm, scope, scope->globalObject()->functionStructure())
+    , m_executable(vm, this, executable)
+    , m_rareData()
+{
+}
+
+inline FunctionExecutable* JSFunction::jsExecutable() const
+{
+    ASSERT(!isHostFunctionNonInline());
+    return static_cast<FunctionExecutable*>(m_executable.get());
+}
+
+inline bool JSFunction::isHostFunction() const
+{
+    ASSERT(m_executable);
+    return m_executable->isHostFunction();
+}
+
+inline bool JSFunction::isBuiltinFunction() const
+{
+    return !isHostFunction() && jsExecutable()->isBuiltinFunction();
+}
+
+inline bool JSFunction::isHostOrBuiltinFunction() const
+{
+    return isHostFunction() || isBuiltinFunction();
+}
+
+inline bool JSFunction::isClassConstructorFunction() const
+{
+    return !isHostFunction() && jsExecutable()->isClassConstructorFunction();
+}
+
+inline NativeFunction JSFunction::nativeFunction()
+{
+    ASSERT(isHostFunctionNonInline());
+    return static_cast<NativeExecutable*>(m_executable.get())->function();
+}
+
+inline NativeFunction JSFunction::nativeConstructor()
+{
+    ASSERT(isHostFunctionNonInline());
+    return static_cast<NativeExecutable*>(m_executable.get())->constructor();
+}
+
+inline bool isHostFunction(JSValue value, NativeFunction nativeFunction)
+{
+    JSFunction* function = jsCast<JSFunction*>(getJSFunction(value));
+    if (!function || !function->isHostFunction())
+        return false;
+    return function->nativeFunction() == nativeFunction;
+}
+
+} // namespace JSC
+
+#endif // JSFunctionInlines_h
+