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diff --git a/Source/JavaScriptCore/runtime/JSObjectInlines.h b/Source/JavaScriptCore/runtime/JSObjectInlines.h
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+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2003-2006, 2008, 2009, 2012-2015 Apple Inc. All rights reserved.
+ *  Copyright (C) 2007 Eric Seidel (eric@webkit.org)
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library 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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef JSObjectInlines_h
+#define JSObjectInlines_h
+
+#include "Error.h"
+#include "JSObject.h"
+#include "Lookup.h"
+
+namespace JSC {
+
+// ECMA 8.6.2.2
+ALWAYS_INLINE void JSObject::putInline(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
+{
+    JSObject* thisObject = jsCast<JSObject*>(cell);
+    ASSERT(value);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
+    VM& vm = exec->vm();
+    
+    // Try indexed put first. This is required for correctness, since loads on property names that appear like
+    // valid indices will never look in the named property storage.
+    if (Optional<uint32_t> index = parseIndex(propertyName)) {
+        putByIndex(thisObject, exec, index.value(), value, slot.isStrictMode());
+        return;
+    }
+    
+    // Check if there are any setters or getters in the prototype chain
+    JSValue prototype;
+    if (propertyName != exec->propertyNames().underscoreProto) {
+        for (JSObject* obj = thisObject; !obj->structure(vm)->hasReadOnlyOrGetterSetterPropertiesExcludingProto(); obj = asObject(prototype)) {
+            prototype = obj->prototype();
+            if (prototype.isNull()) {
+                ASSERT(!thisObject->structure(vm)->prototypeChainMayInterceptStoreTo(exec->vm(), propertyName));
+                if (!thisObject->putDirectInternal<PutModePut>(vm, propertyName, value, 0, slot)
+                    && slot.isStrictMode())
+                    throwTypeError(exec, ASCIILiteral(StrictModeReadonlyPropertyWriteError));
+                return;
+            }
+        }
+    }
+
+    thisObject->putInlineSlow(exec, propertyName, value, slot);
+}
+
+} // namespace JSC
+
+#endif // JSObjectInlines_h
+