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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/bits/ptr_traits.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/bits/ptr_traits.h
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/bits/ptr_traits.h
@@ -0,0 +1,182 @@
+// Pointer Traits -*- C++ -*-
+
+// Copyright (C) 2011, 2012 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, 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 General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file bits/ptr_traits.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{memory}
+ */
+
+#ifndef _PTR_TRAITS_H
+#define _PTR_TRAITS_H 1
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+
+#include // For _GLIBCXX_HAS_NESTED_TYPE
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+_GLIBCXX_HAS_NESTED_TYPE(element_type)
+_GLIBCXX_HAS_NESTED_TYPE(difference_type)
+
+ template::value>
+ struct __ptrtr_elt_type;
+
+ template
+ struct __ptrtr_elt_type<_Tp, true>
+ {
+ typedef typename _Tp::element_type __type;
+ };
+
+ template class _SomePtr, typename _Tp,
+ typename... _Args>
+ struct __ptrtr_elt_type<_SomePtr<_Tp, _Args...>, false>
+ {
+ typedef _Tp __type;
+ };
+
+ template::value>
+ struct __ptrtr_diff_type
+ {
+ typedef typename _Tp::difference_type __type;
+ };
+
+ template
+ struct __ptrtr_diff_type<_Tp, false>
+ {
+ typedef ptrdiff_t __type;
+ };
+
+ template
+ class __ptrtr_rebind_helper
+ {
+ template
+ static constexpr bool
+ _S_chk(typename _Ptr2::template rebind<_Up2>*)
+ { return true; }
+
+ template
+ static constexpr bool
+ _S_chk(...)
+ { return false; }
+
+ public:
+ static const bool __value = _S_chk<_Ptr, _Up>(nullptr);
+ };
+
+ template
+ const bool __ptrtr_rebind_helper<_Ptr, _Up>::__value;
+
+ template::__value>
+ struct __ptrtr_rebind;
+
+ template
+ struct __ptrtr_rebind<_Tp, _Up, true>
+ {
+ typedef typename _Tp::template rebind<_Up> __type;
+ };
+
+ template class _SomePtr, typename _Up,
+ typename _Tp, typename... _Args>
+ struct __ptrtr_rebind<_SomePtr<_Tp, _Args...>, _Up, false>
+ {
+ typedef _SomePtr<_Up, _Args...> __type;
+ };
+
+ template::type>
+ struct __ptrtr_not_void
+ {
+ typedef _Tp __type;
+ };
+
+ template
+ struct __ptrtr_not_void<_Tp, void>
+ {
+ struct __type { };
+ };
+
+ template
+ class __ptrtr_pointer_to
+ {
+ typedef typename __ptrtr_elt_type<_Ptr>::__type __orig_type;
+ typedef typename __ptrtr_not_void<__orig_type>::__type __element_type;
+
+ public:
+ static _Ptr pointer_to(__element_type& __e)
+ { return _Ptr::pointer_to(__e); }
+ };
+
+ /**
+ * @brief Uniform interface to all pointer-like types
+ * @ingroup pointer_abstractions
+ */
+ template
+ struct pointer_traits : __ptrtr_pointer_to<_Ptr>
+ {
+ /// The pointer type
+ typedef _Ptr pointer;
+ /// The type pointed to
+ typedef typename __ptrtr_elt_type<_Ptr>::__type element_type;
+ /// Type used to represent the difference between two pointers
+ typedef typename __ptrtr_diff_type<_Ptr>::__type difference_type;
+
+ template
+ using rebind = typename __ptrtr_rebind<_Ptr, _Up>::__type;
+ };
+
+ /**
+ * @brief Partial specialization for built-in pointers.
+ * @ingroup pointer_abstractions
+ */
+ template
+ struct pointer_traits<_Tp*>
+ {
+ /// The pointer type
+ typedef _Tp* pointer;
+ /// The type pointed to
+ typedef _Tp element_type;
+ /// Type used to represent the difference between two pointers
+ typedef ptrdiff_t difference_type;
+
+ template
+ using rebind = _Up*;
+
+ /**
+ * @brief Obtain a pointer to an object
+ * @param __r A reference to an object of type @c element_type
+ * @return @c addressof(__r)
+ */
+ static pointer
+ pointer_to(typename __ptrtr_not_void::__type& __r) noexcept
+ { return std::addressof(__r); }
+ };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif
+
+#endif