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diff --git a/Source/JavaScriptCore/runtime/WriteBarrierInlines.h b/Source/JavaScriptCore/runtime/WriteBarrierInlines.h
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+++ b/Source/JavaScriptCore/runtime/WriteBarrierInlines.h
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+/*
+ * Copyright (C) 2014 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. 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 INC. 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.
+ */
+
+#pragma once
+
+#include "VM.h"
+#include "WriteBarrier.h"
+
+namespace JSC {
+
+template <typename T>
+inline void WriteBarrierBase<T>::set(VM& vm, const JSCell* owner, T* value)
+{
+    ASSERT(value);
+    ASSERT(!Options::useConcurrentJIT() || !isCompilationThread());
+    validateCell(value);
+    setEarlyValue(vm, owner, value);
+}
+
+template <typename T>
+inline void WriteBarrierBase<T>::setMayBeNull(VM& vm, const JSCell* owner, T* value)
+{
+    if (value)
+        validateCell(value);
+    setEarlyValue(vm, owner, value);
+}
+
+template <typename T>
+inline void WriteBarrierBase<T>::setEarlyValue(VM& vm, const JSCell* owner, T* value)
+{
+    this->m_cell = reinterpret_cast<JSCell*>(value);
+    vm.heap.writeBarrier(owner, this->m_cell);
+}
+
+inline void WriteBarrierBase<Unknown>::set(VM& vm, const JSCell* owner, JSValue value)
+{
+    ASSERT(!Options::useConcurrentJIT() || !isCompilationThread());
+    m_value = JSValue::encode(value);
+    vm.heap.writeBarrier(owner, value);
+}
+
+} // namespace JSC