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diff --git a/Source/JavaScriptCore/wtf/StdLibExtras.h b/Source/JavaScriptCore/wtf/StdLibExtras.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.
+ *
+ * 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 WTF_StdLibExtras_h
+#define WTF_StdLibExtras_h
+
+#include <wtf/Assertions.h>
+
+// Use these to declare and define a static local variable (static T;) so that
+//  it is leaked so that its destructors are not called at exit. Using this
+//  macro also allows workarounds a compiler bug present in Apple's version of GCC 4.0.1.
+#ifndef DEFINE_STATIC_LOCAL
+#if COMPILER(GCC) && defined(__APPLE_CC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 0 && __GNUC_PATCHLEVEL__ == 1
+#define DEFINE_STATIC_LOCAL(type, name, arguments) \
+    static type* name##Ptr = new type arguments; \
+    type& name = *name##Ptr
+#else
+#define DEFINE_STATIC_LOCAL(type, name, arguments) \
+    static type& name = *new type arguments
+#endif
+#endif
+
+// OBJECT_OFFSETOF: Like the C++ offsetof macro, but you can use it with classes.
+// The magic number 0x4000 is insignificant. We use it to avoid using NULL, since
+// NULL can cause compiler problems, especially in cases of multiple inheritance.
+#define OBJECT_OFFSETOF(class, field) (reinterpret_cast<ptrdiff_t>(&(reinterpret_cast<class*>(0x4000)->field)) - 0x4000)
+
+// STRINGIZE: Can convert any value to quoted string, even expandable macros
+#define STRINGIZE(exp) #exp
+#define STRINGIZE_VALUE_OF(exp) STRINGIZE(exp)
+
+/*
+ * The reinterpret_cast<Type1*>([pointer to Type2]) expressions - where
+ * sizeof(Type1) > sizeof(Type2) - cause the following warning on ARM with GCC:
+ * increases required alignment of target type.
+ *
+ * An implicit or an extra static_cast<void*> bypasses the warning.
+ * For more info see the following bugzilla entries:
+ * - https://bugs.webkit.org/show_bug.cgi?id=38045
+ * - http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43976
+ */
+#if (CPU(ARM) || CPU(MIPS)) && COMPILER(GCC)
+template<typename Type>
+bool isPointerTypeAlignmentOkay(Type* ptr)
+{
+    return !(reinterpret_cast<intptr_t>(ptr) % __alignof__(Type));
+}
+
+template<typename TypePtr>
+TypePtr reinterpret_cast_ptr(void* ptr)
+{
+    ASSERT(isPointerTypeAlignmentOkay(reinterpret_cast<TypePtr>(ptr)));
+    return reinterpret_cast<TypePtr>(ptr);
+}
+
+template<typename TypePtr>
+TypePtr reinterpret_cast_ptr(const void* ptr)
+{
+    ASSERT(isPointerTypeAlignmentOkay(reinterpret_cast<TypePtr>(ptr)));
+    return reinterpret_cast<TypePtr>(ptr);
+}
+#else
+#define reinterpret_cast_ptr reinterpret_cast
+#endif
+
+namespace WTF {
+
+/*
+ * C++'s idea of a reinterpret_cast lacks sufficient cojones.
+ */
+template<typename TO, typename FROM>
+inline TO bitwise_cast(FROM from)
+{
+    COMPILE_ASSERT(sizeof(TO) == sizeof(FROM), WTF_bitwise_cast_sizeof_casted_types_is_equal);
+    union {
+        FROM from;
+        TO to;
+    } u;
+    u.from = from;
+    return u.to;
+}
+
+// Returns a count of the number of bits set in 'bits'.
+inline size_t bitCount(unsigned bits)
+{
+    bits = bits - ((bits >> 1) & 0x55555555);
+    bits = (bits & 0x33333333) + ((bits >> 2) & 0x33333333);
+    return (((bits + (bits >> 4)) & 0xF0F0F0F) * 0x1010101) >> 24;
+}
+
+// Macro that returns a compile time constant with the length of an array, but gives an error if passed a non-array.
+template<typename T, size_t Size> char (&ArrayLengthHelperFunction(T (&)[Size]))[Size];
+#define WTF_ARRAY_LENGTH(array) sizeof(::WTF::ArrayLengthHelperFunction(array))
+
+} // namespace WTF
+
+#endif // WTF_StdLibExtras_h