| // -*- C++ -*- | 
 | //===-------------------------- memory ------------------------------------===// | 
 | // | 
 | //                     The LLVM Compiler Infrastructure | 
 | // | 
 | // This file is dual licensed under the MIT and the University of Illinois Open | 
 | // Source Licenses. See LICENSE.TXT for details. | 
 | // | 
 | //===----------------------------------------------------------------------===// | 
 |  | 
 | #ifndef _LIBCPP_MEMORY | 
 | #define _LIBCPP_MEMORY | 
 |  | 
 | /* | 
 |     memory synopsis | 
 |  | 
 | namespace std | 
 | { | 
 |  | 
 | struct allocator_arg_t { }; | 
 | constexpr allocator_arg_t allocator_arg = allocator_arg_t(); | 
 |  | 
 | template <class T, class Alloc> struct uses_allocator; | 
 |  | 
 | template <class Ptr> | 
 | struct pointer_traits | 
 | { | 
 |     typedef Ptr pointer; | 
 |     typedef <details> element_type; | 
 |     typedef <details> difference_type; | 
 |  | 
 |     template <class U> using rebind = <details>; | 
 |  | 
 |     static pointer pointer_to(<details>); | 
 | }; | 
 |  | 
 | template <class Alloc> | 
 | struct allocator_traits | 
 | { | 
 |     typedef Alloc                        allocator_type; | 
 |     typedef typename allocator_type::value_type | 
 |                                          value_type; | 
 |  | 
 |     typedef Alloc::pointer | value_type* pointer; | 
 |     typedef Alloc::const_pointer | 
 |           | pointer_traits<pointer>::rebind<const value_type> | 
 |                                          const_pointer; | 
 |     typedef Alloc::void_pointer | 
 |           | pointer_traits<pointer>::rebind<void> | 
 |                                          void_pointer; | 
 |     typedef Alloc::const_void_pointer | 
 |           | pointer_traits<pointer>::rebind<const void> | 
 |                                          const_void_pointer; | 
 |     typedef Alloc::difference_type | 
 |           | pointer_traits<pointer>::difference_type | 
 |                                          difference_type; | 
 |     typedef Alloc::size_type | 
 |           | make_unsigned<difference_type>::type | 
 |                                          size_type; | 
 |     typedef Alloc::propagate_on_container_copy_assignment | 
 |           | false_type                   propagate_on_container_copy_assignment; | 
 |     typedef Alloc::propagate_on_container_move_assignment | 
 |           | false_type                   propagate_on_container_move_assignment; | 
 |     typedef Alloc::propagate_on_container_swap | 
 |           | false_type                   propagate_on_container_swap; | 
 |  | 
 |     template <class T> using rebind_alloc  = Alloc::rebind<U>::other | Alloc<T, Args...>; | 
 |     template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; | 
 |  | 
 |     static pointer allocate(allocator_type& a, size_type n); | 
 |     static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); | 
 |  | 
 |     static void deallocate(allocator_type& a, pointer p, size_type n); | 
 |  | 
 |     template <class T, class... Args> | 
 |         static void construct(allocator_type& a, T* p, Args&&... args); | 
 |  | 
 |     template <class T> | 
 |         static void destroy(allocator_type& a, T* p); | 
 |  | 
 |     static size_type max_size(const allocator_type& a); | 
 |  | 
 |     static allocator_type | 
 |         select_on_container_copy_construction(const allocator_type& a); | 
 | }; | 
 |  | 
 | template <> | 
 | class allocator<void> | 
 | { | 
 | public: | 
 |     typedef void*                                 pointer; | 
 |     typedef const void*                           const_pointer; | 
 |     typedef void                                  value_type; | 
 |  | 
 |     template <class _Up> struct rebind {typedef allocator<_Up> other;}; | 
 | }; | 
 |  | 
 | template <class T> | 
 | class allocator | 
 | { | 
 | public: | 
 |     typedef size_t                                size_type; | 
 |     typedef ptrdiff_t                             difference_type; | 
 |     typedef T*                                    pointer; | 
 |     typedef const T*                              const_pointer; | 
 |     typedef typename add_lvalue_reference<T>::type       reference; | 
 |     typedef typename add_lvalue_reference<const T>::type const_reference; | 
 |     typedef T                                     value_type; | 
 |  | 
 |     template <class U> struct rebind {typedef allocator<U> other;}; | 
 |  | 
 |     allocator() throw(); | 
 |     allocator(const allocator&) throw(); | 
 |     template <class U> allocator(const allocator<U>&) throw(); | 
 |     ~allocator() throw(); | 
 |     pointer address(reference x) const; | 
 |     const_pointer address(const_reference x) const; | 
 |     pointer allocate(size_type, allocator<void>::const_pointer hint = 0); | 
 |     void deallocate(pointer p, size_type n); | 
 |     size_type max_size() const throw(); | 
 |     void construct(pointer p, const T& val); | 
 |     void destroy(pointer p); | 
 | }; | 
 |  | 
 | template <class T, class U> | 
 | bool operator==(const allocator<T>&, const allocator<U>&) throw(); | 
 |  | 
 | template <class T, class U> | 
 | bool operator!=(const allocator<T>&, const allocator<U>&) throw(); | 
 |  | 
 | template <class OutputIterator, class T> | 
 | class raw_storage_iterator | 
 |     : public iterator<output_iterator_tag, | 
 |                       T,                               // purposefully not C++03 | 
 |                       ptrdiff_t,                       // purposefully not C++03 | 
 |                       T*,                              // purposefully not C++03 | 
 |                       raw_storage_iterator&>           // purposefully not C++03 | 
 | { | 
 | public: | 
 |     explicit raw_storage_iterator(OutputIterator x); | 
 |     raw_storage_iterator& operator*(); | 
 |     raw_storage_iterator& operator=(const T& element); | 
 |     raw_storage_iterator& operator++(); | 
 |     raw_storage_iterator  operator++(int); | 
 | }; | 
 |  | 
 | template <class T> pair<T*,ptrdiff_t> get_temporary_buffer(ptrdiff_t n); | 
 | template <class T> void               return_temporary_buffer(T* p); | 
 |  | 
 | template <class InputIterator, class ForwardIterator> | 
 | ForwardIterator | 
 | uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); | 
 |  | 
 | template <class ForwardIterator, class T> | 
 | void uninitialized_fill(ForwardIterator first, ForwardIterator last, const T& x); | 
 |  | 
 | template <class ForwardIterator, class Size, class T> | 
 | ForwardIterator | 
 | uninitialized_fill_n(ForwardIterator first, Size n, const T& x); | 
 |  | 
 | template <class Y> struct auto_ptr_ref {}; | 
 |  | 
 | template<class X> | 
 | class auto_ptr | 
 | { | 
 | public: | 
 |     typedef X element_type; | 
 |  | 
 |     explicit auto_ptr(X* p =0) throw(); | 
 |     auto_ptr(auto_ptr&) throw(); | 
 |     template<class Y> auto_ptr(auto_ptr<Y>&) throw(); | 
 |     auto_ptr& operator=(auto_ptr&) throw(); | 
 |     template<class Y> auto_ptr& operator=(auto_ptr<Y>&) throw(); | 
 |     auto_ptr& operator=(auto_ptr_ref<X> r) throw(); | 
 |     ~auto_ptr() throw(); | 
 |  | 
 |     typename add_lvalue_reference<X>::type operator*() const throw(); | 
 |     X* operator->() const throw(); | 
 |     X* get() const throw(); | 
 |     X* release() throw(); | 
 |     void reset(X* p =0) throw(); | 
 |  | 
 |     auto_ptr(auto_ptr_ref<X>) throw(); | 
 |     template<class Y> operator auto_ptr_ref<Y>() throw(); | 
 |     template<class Y> operator auto_ptr<Y>() throw(); | 
 | }; | 
 |  | 
 | template <class T> | 
 | struct default_delete | 
 | { | 
 |     constexpr default_delete(); | 
 |     template <class U> default_delete(const default_delete<U>&); | 
 |  | 
 |     void operator()(T*) const; | 
 | }; | 
 |  | 
 | template <class T> | 
 | struct default_delete<T[]> | 
 | { | 
 |     constexpr default_delete(); | 
 |     void operator()(T*) const; | 
 |     template <class U> void operator()(U*) const = delete; | 
 | }; | 
 |  | 
 | template <class T, class D = default_delete<T>> class unique_ptr; | 
 |  | 
 | template <class T, class D = default_delete<T>> | 
 | class unique_ptr | 
 | { | 
 | public: | 
 |     typedef see below pointer; | 
 |     typedef T element_type; | 
 |     typedef D deleter_type; | 
 |  | 
 |     // constructors | 
 |     constexpr unique_ptr(); | 
 |     explicit unique_ptr(pointer p); | 
 |     unique_ptr(pointer p, implementation-defined d1); | 
 |     unique_ptr(pointer p, implementation-defined d2); | 
 |     unique_ptr(unique_ptr&& u); | 
 |     unique_ptr(nullptr_t) : unique_ptr() { } | 
 |     template <class U, class E> | 
 |         unique_ptr(unique_ptr<U, E>&& u); | 
 |     template <class U> | 
 |         unique_ptr(auto_ptr<U>&& u); | 
 |  | 
 |     // destructor | 
 |     ~unique_ptr(); | 
 |  | 
 |     // assignment | 
 |     unique_ptr& operator=(unique_ptr&& u); | 
 |     template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u); | 
 |     unique_ptr& operator=(nullptr_t); | 
 |  | 
 |     // observers | 
 |     typename add_lvalue_reference<T>::type operator*() const; | 
 |     pointer operator->() const; | 
 |     pointer get() const; | 
 |     deleter_type& get_deleter(); | 
 |     const deleter_type& get_deleter() const; | 
 |     explicit operator bool() const; | 
 |  | 
 |     // modifiers | 
 |     pointer release(); | 
 |     void reset(pointer p = pointer()); | 
 |     void swap(unique_ptr& u); | 
 | }; | 
 |  | 
 | template <class T, class D> | 
 | class unique_ptr<T[], D> | 
 | { | 
 | public: | 
 |     typedef implementation-defined pointer; | 
 |     typedef T element_type; | 
 |     typedef D deleter_type; | 
 |  | 
 |     // constructors | 
 |     constexpr unique_ptr(); | 
 |     explicit unique_ptr(pointer p); | 
 |     unique_ptr(pointer p, implementation-defined d); | 
 |     unique_ptr(pointer p, implementation-defined d); | 
 |     unique_ptr(unique_ptr&& u); | 
 |     unique_ptr(nullptr_t) : unique_ptr() { } | 
 |  | 
 |     // destructor | 
 |     ~unique_ptr(); | 
 |  | 
 |     // assignment | 
 |     unique_ptr& operator=(unique_ptr&& u); | 
 |     unique_ptr& operator=(nullptr_t); | 
 |  | 
 |     // observers | 
 |     T& operator[](size_t i) const; | 
 |     pointer get() const; | 
 |     deleter_type& get_deleter(); | 
 |     const deleter_type& get_deleter() const; | 
 |     explicit operator bool() const; | 
 |  | 
 |     // modifiers | 
 |     pointer release(); | 
 |     void reset(pointer p = pointer()); | 
 |     void reset(nullptr_t); | 
 |     template <class U> void reset(U) = delete; | 
 |     void swap(unique_ptr& u); | 
 | }; | 
 |  | 
 | template <class T, class D> | 
 |     void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y); | 
 |  | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator<(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 | template <class T1, class D1, class T2, class D2> | 
 |     bool operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y); | 
 |  | 
 | class bad_weak_ptr | 
 |     : public std::exception | 
 | { | 
 |     bad_weak_ptr(); | 
 | }; | 
 |  | 
 | template<class T> | 
 | class shared_ptr | 
 | { | 
 | public: | 
 |     typedef T element_type; | 
 |  | 
 |     // constructors: | 
 |     constexpr shared_ptr(); | 
 |     template<class Y> explicit shared_ptr(Y* p); | 
 |     template<class Y, class D> shared_ptr(Y* p, D d); | 
 |     template<class Y, class D, class A> shared_ptr(Y* p, D d, A a); | 
 |     template <class D> shared_ptr(nullptr_t p, D d); | 
 |     template <class D, class A> shared_ptr(nullptr_t p, D d, A a); | 
 |     template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p); | 
 |     shared_ptr(const shared_ptr& r); | 
 |     template<class Y> shared_ptr(const shared_ptr<Y>& r); | 
 |     shared_ptr(shared_ptr&& r); | 
 |     template<class Y> shared_ptr(shared_ptr<Y>&& r); | 
 |     template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); | 
 |     template<class Y> shared_ptr(auto_ptr<Y>&& r); | 
 |     template <class Y, class D> shared_ptr(unique_ptr<Y, D>&& r); | 
 |     shared_ptr(nullptr_t) : shared_ptr() { } | 
 |  | 
 |     // destructor: | 
 |     ~shared_ptr(); | 
 |  | 
 |     // assignment: | 
 |     shared_ptr& operator=(const shared_ptr& r); | 
 |     template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r); | 
 |     shared_ptr& operator=(shared_ptr&& r); | 
 |     template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); | 
 |     template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); | 
 |     template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); | 
 |  | 
 |     // modifiers: | 
 |     void swap(shared_ptr& r); | 
 |     void reset(); | 
 |     template<class Y> void reset(Y* p); | 
 |     template<class Y, class D> void reset(Y* p, D d); | 
 |     template<class Y, class D, class A> void reset(Y* p, D d, A a); | 
 |  | 
 |     // observers: T* get() const; | 
 |     T& operator*() const; | 
 |     T* operator->() const; | 
 |     long use_count() const; | 
 |     bool unique() const; | 
 |     explicit operator bool() const; | 
 |     template<class U> bool owner_before(shared_ptr<U> const& b) const; | 
 |     template<class U> bool owner_before(weak_ptr<U> const& b) const; | 
 | }; | 
 |  | 
 | // shared_ptr comparisons: | 
 | template<class T, class U> | 
 |     bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 | template<class T, class U> | 
 |     bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 | template<class T, class U> | 
 |     bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 | template<class T, class U> | 
 |     bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 | template<class T, class U> | 
 |     bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 | template<class T, class U> | 
 |     bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b); | 
 |  | 
 | // shared_ptr specialized algorithms: | 
 | template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b); | 
 |  | 
 | // shared_ptr casts: | 
 | template<class T, class U> | 
 |     shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r); | 
 | template<class T, class U> | 
 |     shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r); | 
 | template<class T, class U> | 
 |     shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r); | 
 |  | 
 | // shared_ptr I/O: | 
 | template<class E, class T, class Y> | 
 |     basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, shared_ptr<Y> const& p); | 
 |  | 
 | // shared_ptr get_deleter: | 
 | template<class D, class T> D* get_deleter(shared_ptr<T> const& p); | 
 |  | 
 | template<class T, class... Args> | 
 |     shared_ptr<T> make_shared(Args&&... args); | 
 | template<class T, class A, class... Args> | 
 |     shared_ptr<T> allocate_shared(const A& a, Args&&... args); | 
 |  | 
 | template<class T> | 
 | class weak_ptr | 
 | { | 
 | public: | 
 |     typedef T element_type; | 
 |  | 
 |     // constructors | 
 |     constexpr weak_ptr(); | 
 |     template<class Y> weak_ptr(shared_ptr<Y> const& r); | 
 |     weak_ptr(weak_ptr const& r); | 
 |     template<class Y> weak_ptr(weak_ptr<Y> const& r); | 
 |  | 
 |     // destructor | 
 |     ~weak_ptr(); | 
 |  | 
 |     // assignment | 
 |     weak_ptr& operator=(weak_ptr const& r); | 
 |     template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r); | 
 |     template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r); | 
 |  | 
 |     // modifiers | 
 |     void swap(weak_ptr& r); | 
 |     void reset(); | 
 |  | 
 |     // observers | 
 |     long use_count() const; | 
 |     bool expired() const; | 
 |     shared_ptr<T> lock() const; | 
 |     template<class U> bool owner_before(shared_ptr<U> const& b); | 
 |     template<class U> bool owner_before(weak_ptr<U> const& b); | 
 | }; | 
 |  | 
 | // weak_ptr specialized algorithms: | 
 | template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b); | 
 |  | 
 | // class owner_less: | 
 | template<class T> struct owner_less; | 
 |  | 
 | template<class T> | 
 | struct owner_less<shared_ptr<T>> | 
 |     : binary_function<shared_ptr<T>, shared_ptr<T>, bool> | 
 | { | 
 |     typedef bool result_type; | 
 |     bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const; | 
 |     bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; | 
 |     bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; | 
 | }; | 
 |  | 
 | template<class T> | 
 | struct owner_less<weak_ptr<T>> | 
 |     : binary_function<weak_ptr<T>, weak_ptr<T>, bool> | 
 | { | 
 |     typedef bool result_type; | 
 |     bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const; | 
 |     bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const; | 
 |     bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const; | 
 | }; | 
 |  | 
 | template<class T> | 
 | class enable_shared_from_this | 
 | { | 
 | protected: | 
 |     constexpr enable_shared_from_this(); | 
 |     enable_shared_from_this(enable_shared_from_this const&); | 
 |     enable_shared_from_this& operator=(enable_shared_from_this const&); | 
 |     ~enable_shared_from_this(); | 
 | public: | 
 |     shared_ptr<T> shared_from_this(); | 
 |     shared_ptr<T const> shared_from_this() const; | 
 | }; | 
 |  | 
 | template<class T> | 
 |     bool atomic_is_lock_free(const shared_ptr<T>* p); | 
 | template<class T> | 
 |     shared_ptr<T> atomic_load(const shared_ptr<T>* p); | 
 | template<class T> | 
 |     shared_ptr<T> atomic_load_explicit(const shared_ptr<T>* p, memory_order mo); | 
 | template<class T> | 
 |     void atomic_store(shared_ptr<T>* p, shared_ptr<T> r); | 
 | template<class T> | 
 |     void atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); | 
 | template<class T> | 
 |     shared_ptr<T> atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r); | 
 | template<class T> | 
 |     shared_ptr<T> | 
 |     atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo); | 
 | template<class T> | 
 |     bool | 
 |     atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); | 
 | template<class T> | 
 |     bool | 
 |     atomic_compare_exchange_strong( shared_ptr<T>* p, shared_ptr<T>* v, shared_ptr<T> w); | 
 | template<class T> | 
 |     bool | 
 |     atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v, | 
 |                                           shared_ptr<T> w, memory_order success, | 
 |                                           memory_order failure); | 
 | template<class T> | 
 |     bool | 
 |     atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, | 
 |                                             shared_ptr<T> w, memory_order success, | 
 |                                             memory_order failure); | 
 | // Hash support | 
 | template <class T> struct hash; | 
 | template <class T, class D> struct hash<unique_ptr<T, D> >; | 
 | template <class T> struct hash<shared_ptr<T> >; | 
 |  | 
 | // Pointer safety | 
 | enum class pointer_safety { relaxed, preferred, strict }; | 
 | void declare_reachable(void *p); | 
 | template <class T> T *undeclare_reachable(T *p); | 
 | void declare_no_pointers(char *p, size_t n); | 
 | void undeclare_no_pointers(char *p, size_t n); | 
 | pointer_safety get_pointer_safety(); | 
 |  | 
 | void* align(size_t alignment, size_t size, void*& ptr, size_t& space); | 
 |  | 
 | }  // std | 
 |  | 
 | */ | 
 |  | 
 | #include <__config> | 
 | #include <type_traits> | 
 | #include <typeinfo> | 
 | #include <cstddef> | 
 | #include <cstdint> | 
 | #include <new> | 
 | #include <utility> | 
 | #include <limits> | 
 | #include <iterator> | 
 | #include <__functional_base> | 
 | #if defined(_LIBCPP_NO_EXCEPTIONS) | 
 |     #include <cassert> | 
 | #endif | 
 |  | 
 | #pragma GCC system_header | 
 |  | 
 | _LIBCPP_BEGIN_NAMESPACE_STD | 
 |  | 
 | // allocator_arg_t | 
 |  | 
 | struct _LIBCPP_VISIBLE allocator_arg_t { }; | 
 |  | 
 | extern const allocator_arg_t allocator_arg; | 
 |  | 
 | // addressof | 
 |  | 
 | template <class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | _Tp* | 
 | addressof(_Tp& __x) | 
 | { | 
 |     return (_Tp*)&(char&)__x; | 
 | } | 
 |  | 
 | template <class _Tp> class allocator; | 
 |  | 
 | template <> | 
 | class _LIBCPP_VISIBLE allocator<void> | 
 | { | 
 | public: | 
 |     typedef void*             pointer; | 
 |     typedef const void*       const_pointer; | 
 |     typedef void              value_type; | 
 |  | 
 |     template <class _Up> struct rebind {typedef allocator<_Up> other;}; | 
 | }; | 
 |  | 
 | // pointer_traits | 
 |  | 
 | template <class _Tp> | 
 | struct __has_element_type | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::element_type* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Ptr, bool = __has_element_type<_Ptr>::value> | 
 | struct __pointer_traits_element_type; | 
 |  | 
 | template <class _Ptr> | 
 | struct __pointer_traits_element_type<_Ptr, true> | 
 | { | 
 |     typedef typename _Ptr::element_type type; | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class, class...> class _Sp, class _Tp, class ..._Args> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, true> | 
 | { | 
 |     typedef typename _Sp<_Tp, _Args...>::element_type type; | 
 | }; | 
 |  | 
 | template <template <class, class...> class _Sp, class _Tp, class ..._Args> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _Args...>, false> | 
 | { | 
 |     typedef _Tp type; | 
 | }; | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class> class _Sp, class _Tp> | 
 | struct __pointer_traits_element_type<_Sp<_Tp>, true> | 
 | { | 
 |     typedef typename _Sp<_Tp>::element_type type; | 
 | }; | 
 |  | 
 | template <template <class> class _Sp, class _Tp> | 
 | struct __pointer_traits_element_type<_Sp<_Tp>, false> | 
 | { | 
 |     typedef _Tp type; | 
 | }; | 
 |  | 
 | template <template <class, class> class _Sp, class _Tp, class _A0> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0>, true> | 
 | { | 
 |     typedef typename _Sp<_Tp, _A0>::element_type type; | 
 | }; | 
 |  | 
 | template <template <class, class> class _Sp, class _Tp, class _A0> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0>, false> | 
 | { | 
 |     typedef _Tp type; | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, true> | 
 | { | 
 |     typedef typename _Sp<_Tp, _A0, _A1>::element_type type; | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Sp, class _Tp, class _A0, class _A1> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1>, false> | 
 | { | 
 |     typedef _Tp type; | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                                            class _A1, class _A2> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, true> | 
 | { | 
 |     typedef typename _Sp<_Tp, _A0, _A1, _A2>::element_type type; | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                                            class _A1, class _A2> | 
 | struct __pointer_traits_element_type<_Sp<_Tp, _A0, _A1, _A2>, false> | 
 | { | 
 |     typedef _Tp type; | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <class _Tp> | 
 | struct __has_difference_type | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::difference_type* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Ptr, bool = __has_difference_type<_Ptr>::value> | 
 | struct __pointer_traits_difference_type | 
 | { | 
 |     typedef ptrdiff_t type; | 
 | }; | 
 |  | 
 | template <class _Ptr> | 
 | struct __pointer_traits_difference_type<_Ptr, true> | 
 | { | 
 |     typedef typename _Ptr::difference_type type; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up> | 
 | struct __has_rebind | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Xp> static __two __test(...); | 
 |     template <class _Xp> static char __test(typename _Xp::template rebind<_Up>* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> | 
 | struct __pointer_traits_rebind | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Tp::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Tp::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, true> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Sp<_Tp, _Args...>::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Sp<_Tp, _Args...>::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <template <class, class...> class _Sp, class _Tp, class ..._Args, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _Args...>, _Up, false> | 
 | { | 
 |     typedef _Sp<_Up, _Args...> type; | 
 | }; | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class> class _Sp, class _Tp, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp>, _Up, true> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Sp<_Tp>::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Sp<_Tp>::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <template <class> class _Sp, class _Tp, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp>, _Up, false> | 
 | { | 
 |     typedef _Sp<_Up> type; | 
 | }; | 
 |  | 
 | template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, true> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Sp<_Tp, _A0>::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Sp<_Tp, _A0>::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <template <class, class> class _Sp, class _Tp, class _A0, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0>, _Up, false> | 
 | { | 
 |     typedef _Sp<_Up, _A0> type; | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                          class _A1, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, true> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Sp<_Tp, _A0, _A1>::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                          class _A1, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1>, _Up, false> | 
 | { | 
 |     typedef _Sp<_Up, _A0, _A1> type; | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                                 class _A1, class _A2, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, true> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up> type; | 
 | #else | 
 |     typedef typename _Sp<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Sp, class _Tp, class _A0, | 
 |                                                 class _A1, class _A2, class _Up> | 
 | struct __pointer_traits_rebind<_Sp<_Tp, _A0, _A1, _A2>, _Up, false> | 
 | { | 
 |     typedef _Sp<_Up, _A0, _A1, _A2> type; | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <class _Ptr> | 
 | struct _LIBCPP_VISIBLE pointer_traits | 
 | { | 
 |     typedef _Ptr                                                     pointer; | 
 |     typedef typename __pointer_traits_element_type<pointer>::type    element_type; | 
 |     typedef typename __pointer_traits_difference_type<pointer>::type difference_type; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     template <class _Up> using rebind = __pointer_traits_rebind<pointer, _Up>::type; | 
 | #else | 
 |     template <class _Up> struct rebind | 
 |         {typedef typename __pointer_traits_rebind<pointer, _Up>::type other;}; | 
 | #endif  // _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |  | 
 | private: | 
 |     struct __nat {}; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer pointer_to(typename conditional<is_void<element_type>::value, | 
 |                                            __nat, element_type>::type& __r) | 
 |         {return pointer::pointer_to(__r);} | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE pointer_traits<_Tp*> | 
 | { | 
 |     typedef _Tp*      pointer; | 
 |     typedef _Tp       element_type; | 
 |     typedef ptrdiff_t difference_type; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     template <class _Up> using rebind = _Up*; | 
 | #else | 
 |     template <class _Up> struct rebind {typedef _Up* other;}; | 
 | #endif | 
 |  | 
 | private: | 
 |     struct __nat {}; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer pointer_to(typename conditional<is_void<element_type>::value, | 
 |                                            __nat, element_type>::type& __r) | 
 |         {return _STD::addressof(__r);} | 
 | }; | 
 |  | 
 | // allocator_traits | 
 |  | 
 | namespace __has_pointer_type_imp | 
 | { | 
 |     template <class _Up> static __two test(...); | 
 |     template <class _Up> static char test(typename _Up::pointer* = 0); | 
 | } | 
 |  | 
 | template <class _Tp> | 
 | struct __has_pointer_type | 
 |     : public integral_constant<bool, sizeof(__has_pointer_type_imp::test<_Tp>(0)) == 1> | 
 | { | 
 | }; | 
 |  | 
 | namespace __pointer_type_imp | 
 | { | 
 |  | 
 | template <class _Tp, class _Dp, bool = __has_pointer_type<_Dp>::value> | 
 | struct __pointer_type | 
 | { | 
 |     typedef typename _Dp::pointer type; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp> | 
 | struct __pointer_type<_Tp, _Dp, false> | 
 | { | 
 |     typedef _Tp* type; | 
 | }; | 
 |  | 
 | }  // __pointer_type_imp | 
 |  | 
 | template <class _Tp, class _Dp> | 
 | struct __pointer_type | 
 | { | 
 |     typedef typename __pointer_type_imp::__pointer_type<_Tp, typename remove_reference<_Dp>::type>::type type; | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_const_pointer | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::const_pointer* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Ptr, class _Alloc, bool = __has_const_pointer<_Alloc>::value> | 
 | struct __const_pointer | 
 | { | 
 |     typedef typename _Alloc::const_pointer type; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Ptr, class _Alloc> | 
 | struct __const_pointer<_Tp, _Ptr, _Alloc, false> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<const _Tp> type; | 
 | #else | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<const _Tp>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_void_pointer | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::void_pointer* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Ptr, class _Alloc, bool = __has_void_pointer<_Alloc>::value> | 
 | struct __void_pointer | 
 | { | 
 |     typedef typename _Alloc::void_pointer type; | 
 | }; | 
 |  | 
 | template <class _Ptr, class _Alloc> | 
 | struct __void_pointer<_Ptr, _Alloc, false> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<void> type; | 
 | #else | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<void>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_const_void_pointer | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::const_void_pointer* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Ptr, class _Alloc, bool = __has_const_void_pointer<_Alloc>::value> | 
 | struct __const_void_pointer | 
 | { | 
 |     typedef typename _Alloc::const_void_pointer type; | 
 | }; | 
 |  | 
 | template <class _Ptr, class _Alloc> | 
 | struct __const_void_pointer<_Ptr, _Alloc, false> | 
 | { | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<const void> type; | 
 | #else | 
 |     typedef typename pointer_traits<_Ptr>::template rebind<const void>::other type; | 
 | #endif | 
 | }; | 
 |  | 
 | template <class _T> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | _T* | 
 | __to_raw_pointer(_T* __p) | 
 | { | 
 |     return __p; | 
 | } | 
 |  | 
 | template <class _Pointer> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | typename pointer_traits<_Pointer>::element_type* | 
 | __to_raw_pointer(_Pointer __p) | 
 | { | 
 |     return _STD::__to_raw_pointer(__p.operator->()); | 
 | } | 
 |  | 
 | template <class _Tp> | 
 | struct __has_size_type | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::size_type* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Alloc, class _DiffType, bool = __has_size_type<_Alloc>::value> | 
 | struct __size_type | 
 | { | 
 |     typedef typename make_unsigned<_DiffType>::type type; | 
 | }; | 
 |  | 
 | template <class _Alloc, class _DiffType> | 
 | struct __size_type<_Alloc, _DiffType, true> | 
 | { | 
 |     typedef typename _Alloc::size_type type; | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_propagate_on_container_copy_assignment | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::propagate_on_container_copy_assignment* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Alloc, bool = __has_propagate_on_container_copy_assignment<_Alloc>::value> | 
 | struct __propagate_on_container_copy_assignment | 
 | { | 
 |     typedef false_type type; | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct __propagate_on_container_copy_assignment<_Alloc, true> | 
 | { | 
 |     typedef typename _Alloc::propagate_on_container_copy_assignment type; | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_propagate_on_container_move_assignment | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::propagate_on_container_move_assignment* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Alloc, bool = __has_propagate_on_container_move_assignment<_Alloc>::value> | 
 | struct __propagate_on_container_move_assignment | 
 | { | 
 |     typedef false_type type; | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct __propagate_on_container_move_assignment<_Alloc, true> | 
 | { | 
 |     typedef typename _Alloc::propagate_on_container_move_assignment type; | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct __has_propagate_on_container_swap | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::propagate_on_container_swap* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Alloc, bool = __has_propagate_on_container_swap<_Alloc>::value> | 
 | struct __propagate_on_container_swap | 
 | { | 
 |     typedef false_type type; | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct __propagate_on_container_swap<_Alloc, true> | 
 | { | 
 |     typedef typename _Alloc::propagate_on_container_swap type; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up, bool = __has_rebind<_Tp, _Up>::value> | 
 | struct __has_rebind_other | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Xp> static __two __test(...); | 
 |     template <class _Xp> static char __test(typename _Xp::template rebind<_Up>::other* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up> | 
 | struct __has_rebind_other<_Tp, _Up, false> | 
 | { | 
 |     static const bool value = false; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up, bool = __has_rebind_other<_Tp, _Up>::value> | 
 | struct __allocator_traits_rebind | 
 | { | 
 |     typedef typename _Tp::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, true> | 
 | { | 
 |     typedef typename _Alloc<_Tp, _Args...>::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | template <template <class, class...> class _Alloc, class _Tp, class ..._Args, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _Args...>, _Up, false> | 
 | { | 
 |     typedef _Alloc<_Up, _Args...> type; | 
 | }; | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <template <class> class _Alloc, class _Tp, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, true> | 
 | { | 
 |     typedef typename _Alloc<_Tp>::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | template <template <class> class _Alloc, class _Tp, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp>, _Up, false> | 
 | { | 
 |     typedef _Alloc<_Up> type; | 
 | }; | 
 |  | 
 | template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, true> | 
 | { | 
 |     typedef typename _Alloc<_Tp, _A0>::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | template <template <class, class> class _Alloc, class _Tp, class _A0, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0>, _Up, false> | 
 | { | 
 |     typedef _Alloc<_Up, _A0> type; | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Alloc, class _Tp, class _A0, | 
 |                                          class _A1, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, true> | 
 | { | 
 |     typedef typename _Alloc<_Tp, _A0, _A1>::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | template <template <class, class, class> class _Alloc, class _Tp, class _A0, | 
 |                                          class _A1, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1>, _Up, false> | 
 | { | 
 |     typedef _Alloc<_Up, _A0, _A1> type; | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, | 
 |                                                 class _A1, class _A2, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, true> | 
 | { | 
 |     typedef typename _Alloc<_Tp, _A0, _A1, _A2>::template rebind<_Up>::other type; | 
 | }; | 
 |  | 
 | template <template <class, class, class, class> class _Alloc, class _Tp, class _A0, | 
 |                                                 class _A1, class _A2, class _Up> | 
 | struct __allocator_traits_rebind<_Alloc<_Tp, _A0, _A1, _A2>, _Up, false> | 
 | { | 
 |     typedef _Alloc<_Up, _A0, _A1, _A2> type; | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | template <class _Alloc, class _SizeType, class _ConstVoidPtr> | 
 | auto | 
 | __has_allocate_hint_test(_Alloc&& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) | 
 |     -> decltype(__a.allocate(__sz, __p), true_type()); | 
 |  | 
 | template <class _Alloc, class _SizeType, class _ConstVoidPtr> | 
 | auto | 
 | __has_allocate_hint_test(const _Alloc& __a, _SizeType&& __sz, _ConstVoidPtr&& __p) | 
 |     -> false_type; | 
 |  | 
 | template <class _Alloc, class _SizeType, class _ConstVoidPtr> | 
 | struct __has_allocate_hint | 
 |     : integral_constant<bool, | 
 |         is_same< | 
 |             decltype(__has_allocate_hint_test(declval<_Alloc>(), | 
 |                                           declval<_SizeType>(), | 
 |                                           declval<_ConstVoidPtr>())), | 
 |             true_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | template <class _Alloc, class _SizeType, class _ConstVoidPtr> | 
 | struct __has_allocate_hint | 
 |     : true_type | 
 | { | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | template <class _Alloc, class _Tp, class ..._Args> | 
 | decltype(_STD::declval<_Alloc>().construct(_STD::declval<_Tp*>(), | 
 |                                            _STD::declval<_Args>()...), | 
 |                                            true_type()) | 
 | __has_construct_test(_Alloc&& __a, _Tp* __p, _Args&& ...__args); | 
 |  | 
 | template <class _Alloc, class _Pointer, class ..._Args> | 
 | false_type | 
 | __has_construct_test(const _Alloc& __a, _Pointer&& __p, _Args&& ...__args); | 
 |  | 
 | template <class _Alloc, class _Pointer, class ..._Args> | 
 | struct __has_construct | 
 |     : integral_constant<bool, | 
 |         is_same< | 
 |             decltype(__has_construct_test(declval<_Alloc>(), | 
 |                                           declval<_Pointer>(), | 
 |                                           declval<_Args>()...)), | 
 |             true_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | template <class _Alloc, class _Pointer> | 
 | auto | 
 | __has_destroy_test(_Alloc&& __a, _Pointer&& __p) | 
 |     -> decltype(__a.destroy(__p), true_type()); | 
 |  | 
 | template <class _Alloc, class _Pointer> | 
 | auto | 
 | __has_destroy_test(const _Alloc& __a, _Pointer&& __p) | 
 |     -> false_type; | 
 |  | 
 | template <class _Alloc, class _Pointer> | 
 | struct __has_destroy | 
 |     : integral_constant<bool, | 
 |         is_same< | 
 |             decltype(__has_destroy_test(declval<_Alloc>(), | 
 |                                         declval<_Pointer>())), | 
 |             true_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | auto | 
 | __has_max_size_test(_Alloc&& __a) | 
 |     -> decltype(__a.max_size(), true_type()); | 
 |  | 
 | template <class _Alloc> | 
 | auto | 
 | __has_max_size_test(const volatile _Alloc& __a) | 
 |     -> false_type; | 
 |  | 
 | template <class _Alloc> | 
 | struct __has_max_size | 
 |     : integral_constant<bool, | 
 |         is_same< | 
 |             decltype(__has_max_size_test(declval<_Alloc&>())), | 
 |             true_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | auto | 
 | __has_select_on_container_copy_construction_test(_Alloc&& __a) | 
 |     -> decltype(__a.select_on_container_copy_construction(), true_type()); | 
 |  | 
 | template <class _Alloc> | 
 | auto | 
 | __has_select_on_container_copy_construction_test(const volatile _Alloc& __a) | 
 |     -> false_type; | 
 |  | 
 | template <class _Alloc> | 
 | struct __has_select_on_container_copy_construction | 
 |     : integral_constant<bool, | 
 |         is_same< | 
 |             decltype(__has_select_on_container_copy_construction_test(declval<_Alloc&>())), | 
 |             true_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <class _Alloc, class _Pointer, class ..._Args> | 
 | struct __has_construct | 
 |     : false_type | 
 | { | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template <class _Alloc, class _Pointer> | 
 | struct __has_destroy | 
 |     : false_type | 
 | { | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct __has_max_size | 
 |     : true_type | 
 | { | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct __has_select_on_container_copy_construction | 
 |     : false_type | 
 | { | 
 | }; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_ADVANCED_SFINAE | 
 |  | 
 | template <class _Alloc, class _Ptr, bool = __has_difference_type<_Alloc>::value> | 
 | struct __alloc_traits_difference_type | 
 | { | 
 |     typedef typename pointer_traits<_Ptr>::difference_type type; | 
 | }; | 
 |  | 
 | template <class _Alloc, class _Ptr> | 
 | struct __alloc_traits_difference_type<_Alloc, _Ptr, true> | 
 | { | 
 |     typedef typename _Alloc::difference_type type; | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | struct _LIBCPP_VISIBLE allocator_traits | 
 | { | 
 |     typedef _Alloc                              allocator_type; | 
 |     typedef typename allocator_type::value_type value_type; | 
 |  | 
 |     typedef typename __pointer_type<value_type, allocator_type>::type pointer; | 
 |     typedef typename __const_pointer<value_type, pointer, allocator_type>::type const_pointer; | 
 |     typedef typename __void_pointer<pointer, allocator_type>::type void_pointer; | 
 |     typedef typename __const_void_pointer<pointer, allocator_type>::type const_void_pointer; | 
 |  | 
 |     typedef typename __alloc_traits_difference_type<allocator_type, pointer>::type difference_type; | 
 |     typedef typename __size_type<allocator_type, difference_type>::type size_type; | 
 |  | 
 |     typedef typename __propagate_on_container_copy_assignment<allocator_type>::type | 
 |                      propagate_on_container_copy_assignment; | 
 |     typedef typename __propagate_on_container_move_assignment<allocator_type>::type | 
 |                      propagate_on_container_move_assignment; | 
 |     typedef typename __propagate_on_container_swap<allocator_type>::type | 
 |                      propagate_on_container_swap; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     template <class _Tp> using rebind_alloc = | 
 |                            __allocator_traits_rebind<allocator_type, _Tp>::type; | 
 |     template <class _Tp> using rebind_traits = allocator_traits<rebind_alloc<_Tp>>; | 
 | #else  // _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |     template <class _Tp> struct rebind_alloc | 
 |         {typedef typename __allocator_traits_rebind<allocator_type, _Tp>::type other;}; | 
 |     template <class _Tp> struct rebind_traits | 
 |         {typedef allocator_traits<typename rebind_alloc<_Tp>::other> other;}; | 
 | #endif  // _LIBCPP_HAS_NO_TEMPLATE_ALIASES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer allocate(allocator_type& __a, size_type __n) | 
 |         {return __a.allocate(__n);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer allocate(allocator_type& __a, size_type __n, const_void_pointer __hint) | 
 |         {return allocate(__a, __n, __hint, | 
 |             __has_allocate_hint<allocator_type, size_type, const_void_pointer>());} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static void deallocate(allocator_type& __a, pointer __p, size_type __n) | 
 |         {__a.deallocate(__p, __n);} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |     template <class _Tp, class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void construct(allocator_type& __a, _Tp* __p, _Args&&... __args) | 
 |             {__construct(__has_construct<allocator_type, pointer, _Args...>(), | 
 |                          __a, __p, _STD::forward<_Args>(__args)...);} | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |     template <class _Tp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void construct(allocator_type& __a, _Tp* __p) | 
 |             { | 
 |                 ::new ((void*)__p) _Tp(); | 
 |             } | 
 |     template <class _Tp, class _A0> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0) | 
 |             { | 
 |                 ::new ((void*)__p) _Tp(__a0); | 
 |             } | 
 |     template <class _Tp, class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, | 
 |                               const _A1& __a1) | 
 |             { | 
 |                 ::new ((void*)__p) _Tp(__a0, __a1); | 
 |             } | 
 |     template <class _Tp, class _A0, class _A1, class _A2> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void construct(allocator_type& __a, _Tp* __p, const _A0& __a0, | 
 |                               const _A1& __a1, const _A2& __a2) | 
 |             { | 
 |                 ::new ((void*)__p) _Tp(__a0, __a1, __a2); | 
 |             } | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     template <class _Tp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void destroy(allocator_type& __a, _Tp* __p) | 
 |             {__destroy(__has_destroy<allocator_type, _Tp*>(), __a, __p);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static size_type max_size(const allocator_type& __a) | 
 |         {return __max_size(__has_max_size<const allocator_type>(), __a);} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static allocator_type | 
 |         select_on_container_copy_construction(const allocator_type& __a) | 
 |             {return select_on_container_copy_construction( | 
 |                 __has_select_on_container_copy_construction<const allocator_type>(), | 
 |                 __a);} | 
 |  | 
 | private: | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer allocate(allocator_type& __a, size_type __n, | 
 |         const_void_pointer __hint, true_type) | 
 |         {return __a.allocate(__n, __hint);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static pointer allocate(allocator_type& __a, size_type __n, | 
 |         const_void_pointer __hint, false_type) | 
 |         {return __a.allocate(__n);} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |     template <class _Tp, class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void __construct(true_type, allocator_type& __a, _Tp* __p, _Args&&... __args) | 
 |             {__a.construct(__p, _STD::forward<_Args>(__args)...);} | 
 |     template <class _Tp, class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void __construct(false_type, allocator_type&, _Tp* __p, _Args&&... __args) | 
 |             { | 
 |                 ::new ((void*)__p) _Tp(_STD::forward<_Args>(__args)...); | 
 |             } | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     template <class _Tp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void __destroy(true_type, allocator_type& __a, _Tp* __p) | 
 |             {__a.destroy(__p);} | 
 |     template <class _Tp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         static void __destroy(false_type, allocator_type&, _Tp* __p) | 
 |             { | 
 |                 __p->~_Tp(); | 
 |             } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static size_type __max_size(true_type, const allocator_type& __a) | 
 |             {return __a.max_size();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static size_type __max_size(false_type, const allocator_type&) | 
 |             {return numeric_limits<size_type>::max();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static allocator_type | 
 |         select_on_container_copy_construction(true_type, const allocator_type& __a) | 
 |             {return __a.select_on_container_copy_construction();} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     static allocator_type | 
 |         select_on_container_copy_construction(false_type, const allocator_type& __a) | 
 |             {return __a;} | 
 | }; | 
 |  | 
 | // uses_allocator | 
 |  | 
 | template <class _Tp> | 
 | struct __has_allocator_type | 
 | { | 
 | private: | 
 |     struct __two {char _; char __;}; | 
 |     template <class _Up> static __two __test(...); | 
 |     template <class _Up> static char __test(typename _Up::allocator_type* = 0); | 
 | public: | 
 |     static const bool value = sizeof(__test<_Tp>(0)) == 1; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Alloc, bool = __has_allocator_type<_Tp>::value> | 
 | struct __uses_allocator | 
 |     : public integral_constant<bool, | 
 |         is_convertible<_Alloc, typename _Tp::allocator_type>::value> | 
 | { | 
 | }; | 
 |  | 
 | template <class _Tp, class _Alloc> | 
 | struct __uses_allocator<_Tp, _Alloc, false> | 
 |     : public false_type | 
 | { | 
 | }; | 
 |  | 
 | template <class _Tp, class _Alloc> | 
 | struct _LIBCPP_VISIBLE uses_allocator | 
 |     : public __uses_allocator<_Tp, _Alloc> | 
 | { | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | // uses-allocator construction | 
 |  | 
 | template <class _Tp, class _Alloc, class ..._Args> | 
 | struct __uses_alloc_ctor_imp | 
 | { | 
 |     static const bool __ua = uses_allocator<_Tp, _Alloc>::value; | 
 |     static const bool __ic = | 
 |         is_constructible<_Tp, allocator_arg_t, _Alloc, _Args...>::value; | 
 |     static const int value = __ua ? 2 - __ic : 0; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Alloc, class ..._Args> | 
 | struct __uses_alloc_ctor | 
 |     : integral_constant<int, __uses_alloc_ctor_imp<_Tp, _Alloc, _Args...>::value> | 
 |     {}; | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | // allocator | 
 |  | 
 | template <class _Tp> | 
 | class _LIBCPP_VISIBLE allocator | 
 | { | 
 | public: | 
 |     typedef size_t            size_type; | 
 |     typedef ptrdiff_t         difference_type; | 
 |     typedef _Tp*              pointer; | 
 |     typedef const _Tp*        const_pointer; | 
 |     typedef _Tp&              reference; | 
 |     typedef const _Tp&        const_reference; | 
 |     typedef _Tp               value_type; | 
 |  | 
 |     template <class _Up> struct rebind {typedef allocator<_Up> other;}; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY allocator() throw() {} | 
 |     template <class _Up> _LIBCPP_INLINE_VISIBILITY allocator(const allocator<_Up>&) throw() {} | 
 |     _LIBCPP_INLINE_VISIBILITY pointer address(reference __x) const             {return addressof(__x);} | 
 |     _LIBCPP_INLINE_VISIBILITY const_pointer address(const_reference __x) const {return addressof(__x);} | 
 |     _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, allocator<void>::const_pointer = 0) | 
 |         {return static_cast<pointer>(::operator new(__n * sizeof(_Tp)));} | 
 |     _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type) {::operator delete((void*)__p);} | 
 |     _LIBCPP_INLINE_VISIBILITY size_type max_size() const throw() {return size_type(~0) / sizeof(_Tp);} | 
 | #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) | 
 |     template <class _Up, class... _Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(_Up* __p, _Args&&... __args) | 
 |         { | 
 |             ::new((void*)__p) _Up(_STD::forward<_Args>(__args)...); | 
 |         } | 
 | #else  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(pointer __p) | 
 |         { | 
 |             ::new((void*)__p) _Tp(); | 
 |         } | 
 | # if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) | 
 |     template <class _A0> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         typename enable_if | 
 |         < | 
 |             !is_convertible<_A0, __rv<_A0> >::value, | 
 |             void | 
 |         >::type | 
 |         construct(pointer __p, _A0& __a0) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0); | 
 |         } | 
 |     template <class _A0> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         typename enable_if | 
 |         < | 
 |             !is_convertible<_A0, __rv<_A0> >::value, | 
 |             void | 
 |         >::type | 
 |         construct(pointer __p, const _A0& __a0) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0); | 
 |         } | 
 |     template <class _A0> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         typename enable_if | 
 |         < | 
 |             is_convertible<_A0, __rv<_A0> >::value, | 
 |             void | 
 |         >::type | 
 |         construct(pointer __p, _A0 __a0) | 
 |         { | 
 |             ::new((void*)__p) _Tp(_STD::move(__a0)); | 
 |         } | 
 | # endif  // defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) | 
 |     template <class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(pointer __p, _A0& __a0, _A1& __a1) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0, __a1); | 
 |         } | 
 |     template <class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(pointer __p, const _A0& __a0, _A1& __a1) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0, __a1); | 
 |         } | 
 |     template <class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(pointer __p, _A0& __a0, const _A1& __a1) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0, __a1); | 
 |         } | 
 |     template <class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         construct(pointer __p, const _A0& __a0, const _A1& __a1) | 
 |         { | 
 |             ::new((void*)__p) _Tp(__a0, __a1); | 
 |         } | 
 | #endif  // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) | 
 |     _LIBCPP_INLINE_VISIBILITY void destroy(pointer __p) {__p->~_Tp();} | 
 | }; | 
 |  | 
 | template <class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool operator==(const allocator<_Tp>&, const allocator<_Up>&) throw() {return true;} | 
 |  | 
 | template <class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool operator!=(const allocator<_Tp>&, const allocator<_Up>&) throw() {return false;} | 
 |  | 
 | template <class _OutputIterator, class _Tp> | 
 | class _LIBCPP_VISIBLE raw_storage_iterator | 
 |     : public iterator<output_iterator_tag, | 
 |                       _Tp,                                         // purposefully not C++03 | 
 |                       ptrdiff_t,                                   // purposefully not C++03 | 
 |                       _Tp*,                                        // purposefully not C++03 | 
 |                       raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03 | 
 | { | 
 | private: | 
 |     _OutputIterator __x_; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} | 
 |     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) | 
 |         {::new(&*__x_) _Tp(__element); return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int) | 
 |         {raw_storage_iterator __t(*this); ++__x_; return __t;} | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | pair<_Tp*, ptrdiff_t> | 
 | get_temporary_buffer(ptrdiff_t __n) | 
 | { | 
 |     pair<_Tp*, ptrdiff_t> __r(0, 0); | 
 |     const ptrdiff_t __m = (~ptrdiff_t(0) ^ | 
 |                            ptrdiff_t(ptrdiff_t(1) << (sizeof(ptrdiff_t) * __CHAR_BIT__ - 1))) | 
 |                            / sizeof(_Tp); | 
 |     if (__n > __m) | 
 |         __n = __m; | 
 |     while (__n > 0) | 
 |     { | 
 |         __r.first = static_cast<_Tp*>(::operator new(__n * sizeof(_Tp), nothrow)); | 
 |         if (__r.first) | 
 |         { | 
 |             __r.second = __n; | 
 |             break; | 
 |         } | 
 |         __n /= 2; | 
 |     } | 
 |     return __r; | 
 | } | 
 |  | 
 | template <class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void return_temporary_buffer(_Tp* __p) {::operator delete(__p);} | 
 |  | 
 | template <class _Tp> | 
 | struct auto_ptr_ref | 
 | { | 
 |     _Tp* __ptr_; | 
 | }; | 
 |  | 
 | template<class _Tp> | 
 | class _LIBCPP_VISIBLE auto_ptr | 
 | { | 
 | private: | 
 |     _Tp* __ptr_; | 
 | public: | 
 |     typedef _Tp element_type; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY explicit auto_ptr(_Tp* __p = 0) throw() : __ptr_(__p) {} | 
 |     _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr& __p) throw() : __ptr_(__p.release()) {} | 
 |     template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr<_Up>& __p) throw() | 
 |         : __ptr_(__p.release()) {} | 
 |     _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr& __p) throw() | 
 |         {reset(__p.release()); return *this;} | 
 |     template<class _Up> _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr<_Up>& __p) throw() | 
 |         {reset(__p.release()); return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY auto_ptr& operator=(auto_ptr_ref<_Tp> __p) throw() | 
 |         {reset(__p.__ptr_); return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY ~auto_ptr() throw() {delete __ptr_;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _Tp& operator*() const throw() | 
 |         {return *__ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _Tp* operator->() const throw() {return __ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _Tp* get() const throw() {return __ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _Tp* release() throw() | 
 |     { | 
 |         _Tp* __t = __ptr_; | 
 |         __ptr_ = 0; | 
 |         return __t; | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY void reset(_Tp* __p = 0) throw() | 
 |     { | 
 |         if (__ptr_ != __p) | 
 |             delete __ptr_; | 
 |         __ptr_ = __p; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY auto_ptr(auto_ptr_ref<_Tp> __p) throw() : __ptr_(__p.__ptr_) {} | 
 |     template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr_ref<_Up>() throw() | 
 |         {auto_ptr_ref<_Up> __t; __t.__ptr_ = release(); return __t;} | 
 |     template<class _Up> _LIBCPP_INLINE_VISIBILITY operator auto_ptr<_Up>() throw() | 
 |         {return auto_ptr<_Up>(release());} | 
 | }; | 
 |  | 
 | template <> | 
 | class _LIBCPP_VISIBLE auto_ptr<void> | 
 | { | 
 | public: | 
 |     typedef void element_type; | 
 | }; | 
 |  | 
 | template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type, | 
 |                                                      typename remove_cv<_T2>::type>::value, | 
 |                                 bool = is_empty<_T1>::value, | 
 |                                 bool = is_empty<_T2>::value> | 
 | struct __libcpp_compressed_pair_switch; | 
 |  | 
 | template <class _T1, class _T2, bool IsSame> | 
 | struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, false> {enum {value = 0};}; | 
 |  | 
 | template <class _T1, class _T2, bool IsSame> | 
 | struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, true, false>  {enum {value = 1};}; | 
 |  | 
 | template <class _T1, class _T2, bool IsSame> | 
 | struct __libcpp_compressed_pair_switch<_T1, _T2, IsSame, false, true>  {enum {value = 2};}; | 
 |  | 
 | template <class _T1, class _T2> | 
 | struct __libcpp_compressed_pair_switch<_T1, _T2, false, true, true>    {enum {value = 3};}; | 
 |  | 
 | template <class _T1, class _T2> | 
 | struct __libcpp_compressed_pair_switch<_T1, _T2, true, true, true>     {enum {value = 1};}; | 
 |  | 
 | template <class _T1, class _T2, unsigned = __libcpp_compressed_pair_switch<_T1, _T2>::value> | 
 | class __libcpp_compressed_pair_imp; | 
 |  | 
 | template <class _T1, class _T2> | 
 | class __libcpp_compressed_pair_imp<_T1, _T2, 0> | 
 | { | 
 | private: | 
 |     _T1 __first_; | 
 |     _T2 __second_; | 
 | public: | 
 |     typedef _T1 _T1_param; | 
 |     typedef _T2 _T2_param; | 
 |  | 
 |     typedef typename remove_reference<_T1>::type& _T1_reference; | 
 |     typedef typename remove_reference<_T2>::type& _T2_reference; | 
 |  | 
 |     typedef const typename remove_reference<_T1>::type& _T1_const_reference; | 
 |     typedef const typename remove_reference<_T2>::type& _T2_const_reference; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1, int = 0) | 
 |         : __first_(_STD::forward<_T1_param>(__t1)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2, int* = 0) | 
 |         : __second_(_STD::forward<_T2_param>(__t2)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) | 
 |         : __first_(_STD::forward<_T1_param>(__t1)), __second_(_STD::forward<_T2_param>(__t2)) {} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) | 
 |         : __first_(_STD::forward<_T1>(__p.first())), __second_(_STD::forward<_T2>(__p.second())) {} | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_reference       first()       {return __first_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const {return __first_;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_reference       second()       {return __second_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const {return __second_;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) | 
 |     { | 
 |         using _STD::swap; | 
 |         swap(__first_, __x.__first_); | 
 |         swap(__second_, __x.__second_); | 
 |     } | 
 | }; | 
 |  | 
 | template <class _T1, class _T2> | 
 | class __libcpp_compressed_pair_imp<_T1, _T2, 1> | 
 |     : private _T1 | 
 | { | 
 | private: | 
 |     _T2 __second_; | 
 | public: | 
 |     typedef _T1 _T1_param; | 
 |     typedef _T2 _T2_param; | 
 |  | 
 |     typedef _T1&                                        _T1_reference; | 
 |     typedef typename remove_reference<_T2>::type& _T2_reference; | 
 |  | 
 |     typedef const _T1&                                        _T1_const_reference; | 
 |     typedef const typename remove_reference<_T2>::type& _T2_const_reference; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1, int = 0) | 
 |         : _T1(_STD::forward<_T1_param>(__t1)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2, int* = 0) | 
 |         : __second_(_STD::forward<_T2_param>(__t2)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) | 
 |         : _T1(_STD::forward<_T1_param>(__t1)), __second_(_STD::forward<_T2_param>(__t2)) {} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) | 
 |         : _T1(_STD::move(__p.first())), __second_(_STD::forward<_T2>(__p.second())) {} | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_reference       first()       {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const {return *this;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_reference       second()       {return __second_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const {return __second_;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) | 
 |     { | 
 |         using _STD::swap; | 
 |         swap(__second_, __x.__second_); | 
 |     } | 
 | }; | 
 |  | 
 | template <class _T1, class _T2> | 
 | class __libcpp_compressed_pair_imp<_T1, _T2, 2> | 
 |     : private _T2 | 
 | { | 
 | private: | 
 |     _T1 __first_; | 
 | public: | 
 |     typedef _T1 _T1_param; | 
 |     typedef _T2 _T2_param; | 
 |  | 
 |     typedef typename remove_reference<_T1>::type& _T1_reference; | 
 |     typedef _T2&                                        _T2_reference; | 
 |  | 
 |     typedef const typename remove_reference<_T1>::type& _T1_const_reference; | 
 |     typedef const _T2&                                        _T2_const_reference; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) | 
 |         : __first_(_STD::forward<_T1_param>(__t1)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) | 
 |         : _T2(_STD::forward<_T2_param>(__t2)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) | 
 |         : _T2(_STD::forward<_T2_param>(__t2)), __first_(_STD::forward<_T1_param>(__t1)) {} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) | 
 |         : _T2(_STD::forward<_T2>(__p.second())), __first_(_STD::move(__p.first())) {} | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_reference       first()       {return __first_;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const {return __first_;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_reference       second()       {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const {return *this;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) | 
 |     { | 
 |         using _STD::swap; | 
 |         swap(__first_, __x.__first_); | 
 |     } | 
 | }; | 
 |  | 
 | template <class _T1, class _T2> | 
 | class __libcpp_compressed_pair_imp<_T1, _T2, 3> | 
 |     : private _T1, | 
 |       private _T2 | 
 | { | 
 | public: | 
 |     typedef _T1 _T1_param; | 
 |     typedef _T2 _T2_param; | 
 |  | 
 |     typedef _T1& _T1_reference; | 
 |     typedef _T2& _T2_reference; | 
 |  | 
 |     typedef const _T1& _T1_const_reference; | 
 |     typedef const _T2& _T2_const_reference; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp() {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T1_param __t1) | 
 |         : _T1(_STD::forward<_T1_param>(__t1)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __libcpp_compressed_pair_imp(_T2_param __t2) | 
 |         : _T2(_STD::forward<_T2_param>(__t2)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(_T1_param __t1, _T2_param __t2) | 
 |         : _T1(_STD::forward<_T1_param>(__t1)), _T2(_STD::forward<_T2_param>(__t2)) {} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY __libcpp_compressed_pair_imp(__libcpp_compressed_pair_imp&& __p) | 
 |         : _T1(_STD::move(__p.first())), _T2(_STD::move(__p.second())) {} | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_reference       first()       {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const {return *this;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_reference       second()       {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const {return *this;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(__libcpp_compressed_pair_imp& __x) | 
 |     { | 
 |     } | 
 | }; | 
 |  | 
 | template <class _T1, class _T2> | 
 | class __compressed_pair | 
 |     : private __libcpp_compressed_pair_imp<_T1, _T2> | 
 | { | 
 |     typedef __libcpp_compressed_pair_imp<_T1, _T2> base; | 
 | public: | 
 |     typedef typename base::_T1_param _T1_param; | 
 |     typedef typename base::_T2_param _T2_param; | 
 |  | 
 |     typedef typename base::_T1_reference _T1_reference; | 
 |     typedef typename base::_T2_reference _T2_reference; | 
 |  | 
 |     typedef typename base::_T1_const_reference _T1_const_reference; | 
 |     typedef typename base::_T2_const_reference _T2_const_reference; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY __compressed_pair() {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T1_param __t1, int = 0) | 
 |         : base(_STD::forward<_T1_param>(__t1)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __compressed_pair(_T2_param __t2, int* = 0) | 
 |         : base(_STD::forward<_T2_param>(__t2)) {} | 
 |     _LIBCPP_INLINE_VISIBILITY __compressed_pair(_T1_param __t1, _T2_param __t2) | 
 |         : base(_STD::forward<_T1_param>(__t1), _STD::forward<_T2_param>(__t2)) {} | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     __compressed_pair(__compressed_pair&& __p) | 
 |         : base(_STD::move(__p)) {} | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_reference       first()       {return base::first();} | 
 |     _LIBCPP_INLINE_VISIBILITY _T1_const_reference first() const {return base::first();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_reference       second()       {return base::second();} | 
 |     _LIBCPP_INLINE_VISIBILITY _T2_const_reference second() const {return base::second();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(__compressed_pair& __x) {base::swap(__x);} | 
 | }; | 
 |  | 
 | template <class _T1, class _T2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(__compressed_pair<_T1, _T2>& __x, __compressed_pair<_T1, _T2>& __y) | 
 |     {__x.swap(__y);} | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE default_delete | 
 | { | 
 |     _LIBCPP_INLINE_VISIBILITY default_delete() {} | 
 |     template <class _Up> | 
 |         _LIBCPP_INLINE_VISIBILITY default_delete(const default_delete<_Up>&, | 
 |                       typename enable_if<is_convertible<_Up*, _Tp*>::value>::type* = 0) {} | 
 |     _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const | 
 |         { | 
 |             static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); | 
 |             delete __ptr; | 
 |         } | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE default_delete<_Tp[]> | 
 | { | 
 |     _LIBCPP_INLINE_VISIBILITY void operator() (_Tp* __ptr) const | 
 |         { | 
 |             static_assert(sizeof(_Tp) > 0, "default_delete can not delete incomplete type"); | 
 |             delete [] __ptr; | 
 |         } | 
 | private: | 
 |     template <class _Up> void operator() (_Up*) const; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp = default_delete<_Tp> > | 
 | class _LIBCPP_VISIBLE unique_ptr | 
 | { | 
 | public: | 
 |     typedef _Tp element_type; | 
 |     typedef _Dp deleter_type; | 
 |     typedef typename __pointer_type<_Tp, deleter_type>::type pointer; | 
 | private: | 
 |     __compressed_pair<pointer, deleter_type> __ptr_; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     unique_ptr(const unique_ptr&); | 
 |     unique_ptr& operator=(const unique_ptr&); | 
 |     template <class _Up, class _Ep> | 
 |         unique_ptr(const unique_ptr<_Up, _Ep>&); | 
 |     template <class _Up, class _Ep> | 
 |         unique_ptr& operator=(const unique_ptr<_Up, _Ep>&); | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     unique_ptr(unique_ptr&); | 
 |     template <class _Up, class _Ep> | 
 |         unique_ptr(unique_ptr<_Up, _Ep>&); | 
 |     unique_ptr& operator=(unique_ptr&); | 
 |     template <class _Up, class _Ep> | 
 |         unique_ptr& operator=(unique_ptr<_Up, _Ep>&); | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     struct __nat {int __for_bool_;}; | 
 |  | 
 |     typedef       typename remove_reference<deleter_type>::type& _Dp_reference; | 
 |     typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr() | 
 |         : __ptr_(pointer()) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t) | 
 |         : __ptr_(pointer()) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |     _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) | 
 |         : __ptr_(_STD::move(__p)) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename conditional< | 
 |                                         is_reference<deleter_type>::value, | 
 |                                         deleter_type, | 
 |                                         typename add_lvalue_reference<const deleter_type>::type>::type __d) | 
 |         : __ptr_(__p, __d) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, typename remove_reference<deleter_type>::type&& __d) | 
 |         : __ptr_(__p, _STD::move(__d)) | 
 |         { | 
 |             static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); | 
 |         } | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) | 
 |         : __ptr_(__u.release(), _STD::forward<deleter_type>(__u.get_deleter())) {} | 
 |     template <class _Up, class _Ep> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         unique_ptr(unique_ptr<_Up, _Ep>&& __u, | 
 |                    typename enable_if | 
 |                       < | 
 |                         !is_array<_Up>::value && | 
 |                          is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value && | 
 |                          is_convertible<_Ep, deleter_type>::value && | 
 |                          ( | 
 |                             !is_reference<deleter_type>::value || | 
 |                             is_same<deleter_type, _Ep>::value | 
 |                          ), | 
 |                          __nat | 
 |                       >::type = __nat()) | 
 |             : __ptr_(__u.release(), _STD::forward<_Ep>(__u.get_deleter())) {} | 
 |  | 
 |     template <class _Up> | 
 |         _LIBCPP_INLINE_VISIBILITY unique_ptr(auto_ptr<_Up>&& __p, | 
 |                 typename enable_if< | 
 |                                       is_convertible<_Up*, _Tp*>::value && | 
 |                                       is_same<_Dp, default_delete<_Tp> >::value, | 
 |                                       __nat | 
 |                                   >::type = __nat()) | 
 |             : __ptr_(__p.release()) | 
 |             { | 
 |             } | 
 |  | 
 |         _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) | 
 |             { | 
 |                 reset(__u.release()); | 
 |                 __ptr_.second() = _STD::forward<deleter_type>(__u.get_deleter()); | 
 |                 return *this; | 
 |             } | 
 |  | 
 |         template <class _Up, class _Ep> | 
 |             _LIBCPP_INLINE_VISIBILITY | 
 |             typename enable_if | 
 |             < | 
 |                 !is_array<_Up>::value, | 
 |                 unique_ptr& | 
 |             >::type | 
 |             operator=(unique_ptr<_Up, _Ep>&& __u) | 
 |             { | 
 |                 reset(__u.release()); | 
 |                 __ptr_.second() = _STD::forward<_Ep>(__u.get_deleter()); | 
 |                 return *this; | 
 |             } | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() | 
 |     { | 
 |         return __rv<unique_ptr>(*this); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) | 
 |         : __ptr_(__u->release(), _STD::forward<deleter_type>(__u->get_deleter())) {} | 
 |  | 
 |     template <class _Up, class _Ep> | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr<_Up, _Ep> __u) | 
 |     { | 
 |         reset(__u.release()); | 
 |         __ptr_.second() = _STD::forward<deleter_type>(__u.get_deleter()); | 
 |         return *this; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) | 
 |         : __ptr_(_STD::move(__p), _STD::move(__d)) {} | 
 |  | 
 |     template <class _Up> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |                 typename enable_if< | 
 |                                       is_convertible<_Up*, _Tp*>::value && | 
 |                                       is_same<_Dp, default_delete<_Tp> >::value, | 
 |                                       unique_ptr& | 
 |                                   >::type | 
 |         operator=(auto_ptr<_Up> __p) | 
 |             {reset(__p.release()); return *this;} | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) | 
 |     { | 
 |         reset(); | 
 |         return *this; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator*() const | 
 |         {return *__ptr_.first();} | 
 |     _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return __ptr_.first();} | 
 |     _LIBCPP_INLINE_VISIBILITY pointer get() const {return __ptr_.first();} | 
 |     _LIBCPP_INLINE_VISIBILITY       _Dp_reference get_deleter()       {return __ptr_.second();} | 
 |     _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const {return __ptr_.second();} | 
 |     _LIBCPP_INLINE_VISIBILITY operator int __nat::*() const {return __ptr_.first() ? &__nat::__for_bool_ : 0;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY pointer release() | 
 |     { | 
 |         pointer __t = __ptr_.first(); | 
 |         __ptr_.first() = pointer(); | 
 |         return __t; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) | 
 |     { | 
 |         pointer __tmp = __ptr_.first(); | 
 |         __ptr_.first() = __p; | 
 |         if (__tmp) | 
 |             __ptr_.second()(__tmp); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp> | 
 | class _LIBCPP_VISIBLE unique_ptr<_Tp[], _Dp> | 
 | { | 
 | public: | 
 |     typedef _Tp element_type; | 
 |     typedef _Dp deleter_type; | 
 |     typedef typename __pointer_type<_Tp, deleter_type>::type pointer; | 
 | private: | 
 |     __compressed_pair<pointer, deleter_type> __ptr_; | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     unique_ptr(const unique_ptr&); | 
 |     unique_ptr& operator=(const unique_ptr&); | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     unique_ptr(unique_ptr&); | 
 |     template <class _Up> | 
 |         unique_ptr(unique_ptr<_Up>&); | 
 |     unique_ptr& operator=(unique_ptr&); | 
 |     template <class _Up> | 
 |         unique_ptr& operator=(unique_ptr<_Up>&); | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     struct __nat {int __for_bool_;}; | 
 |  | 
 |     typedef       typename remove_reference<deleter_type>::type& _Dp_reference; | 
 |     typedef const typename remove_reference<deleter_type>::type& _Dp_const_reference; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr() | 
 |         : __ptr_(pointer()) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t) | 
 |         : __ptr_(pointer()) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template <class _P, | 
 |               class = typename enable_if<is_same<_P, pointer>::value>::type | 
 |              > | 
 |     _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(_P __p) | 
 |         : __ptr_(__p) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |  | 
 |     template <class _P, | 
 |               class = typename enable_if<is_same<_P, pointer>::value>::type | 
 |              > | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(_P __p, typename conditional< | 
 |                                        is_reference<deleter_type>::value, | 
 |                                        deleter_type, | 
 |                                        typename add_lvalue_reference<const deleter_type>::type>::type __d) | 
 |         : __ptr_(__p, __d) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename conditional< | 
 |                                        is_reference<deleter_type>::value, | 
 |                                        deleter_type, | 
 |                                        typename add_lvalue_reference<const deleter_type>::type>::type __d) | 
 |         : __ptr_(pointer(), __d) {} | 
 |  | 
 |     template <class _P, | 
 |               class = typename enable_if<is_same<_P, pointer>::value || | 
 |                                          is_same<_P, nullptr_t>::value>::type | 
 |              > | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(_P __p, typename remove_reference<deleter_type>::type&& __d) | 
 |         : __ptr_(__p, _STD::move(__d)) | 
 |         { | 
 |             static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, typename remove_reference<deleter_type>::type&& __d) | 
 |         : __ptr_(pointer(), _STD::move(__d)) | 
 |         { | 
 |             static_assert(!is_reference<deleter_type>::value, "rvalue deleter bound to reference"); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) | 
 |         : __ptr_(__u.release(), _STD::forward<deleter_type>(__u.get_deleter())) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u) | 
 |         { | 
 |             reset(__u.release()); | 
 |             __ptr_.second() = _STD::forward<deleter_type>(__u.get_deleter()); | 
 |             return *this; | 
 |         } | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY explicit unique_ptr(pointer __p) | 
 |         : __ptr_(__p) | 
 |         { | 
 |             static_assert(!is_pointer<deleter_type>::value, | 
 |                 "unique_ptr constructed with null function pointer deleter"); | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(pointer __p, deleter_type __d) | 
 |         : __ptr_(__p, _STD::forward<deleter_type>(__d)) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(nullptr_t, deleter_type __d) | 
 |         : __ptr_(pointer(), _STD::forward<deleter_type>(__d)) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY operator __rv<unique_ptr>() | 
 |     { | 
 |         return __rv<unique_ptr>(*this); | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr(__rv<unique_ptr> __u) | 
 |         : __ptr_(__u->release(), _STD::forward<deleter_type>(__u->get_deleter())) {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(__rv<unique_ptr> __u) | 
 |     { | 
 |         reset(__u->release()); | 
 |         __ptr_.second() = _STD::forward<deleter_type>(__u->get_deleter()); | 
 |         return *this; | 
 |     } | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY ~unique_ptr() {reset();} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) | 
 |     { | 
 |         reset(); | 
 |         return *this; | 
 |     } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY typename add_lvalue_reference<_Tp>::type operator[](size_t __i) const | 
 |         {return __ptr_.first()[__i];} | 
 |     _LIBCPP_INLINE_VISIBILITY pointer get() const {return __ptr_.first();} | 
 |     _LIBCPP_INLINE_VISIBILITY       _Dp_reference get_deleter()       {return __ptr_.second();} | 
 |     _LIBCPP_INLINE_VISIBILITY _Dp_const_reference get_deleter() const {return __ptr_.second();} | 
 |     _LIBCPP_INLINE_VISIBILITY operator int __nat::*() const {return __ptr_.first() ? &__nat::__for_bool_ : 0;} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY pointer release() | 
 |     { | 
 |         pointer __t = __ptr_.first(); | 
 |         __ptr_.first() = pointer(); | 
 |         return __t; | 
 |     } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template <class _P, | 
 |               class = typename enable_if<is_same<_P, pointer>::value>::type | 
 |              > | 
 |     _LIBCPP_INLINE_VISIBILITY void reset(_P __p) | 
 |     { | 
 |         pointer __tmp = __ptr_.first(); | 
 |         __ptr_.first() = __p; | 
 |         if (__tmp) | 
 |             __ptr_.second()(__tmp); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY void reset(nullptr_t) | 
 |     { | 
 |         pointer __tmp = __ptr_.first(); | 
 |         __ptr_.first() = nullptr; | 
 |         if (__tmp) | 
 |             __ptr_.second()(__tmp); | 
 |     } | 
 |     _LIBCPP_INLINE_VISIBILITY void reset() | 
 |     { | 
 |         pointer __tmp = __ptr_.first(); | 
 |         __ptr_.first() = nullptr; | 
 |         if (__tmp) | 
 |             __ptr_.second()(__tmp); | 
 |     } | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     _LIBCPP_INLINE_VISIBILITY void reset(pointer __p = pointer()) | 
 |     { | 
 |         pointer __tmp = __ptr_.first(); | 
 |         __ptr_.first() = __p; | 
 |         if (__tmp) | 
 |             __ptr_.second()(__tmp); | 
 |     } | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void swap(unique_ptr& __u) {__ptr_.swap(__u.__ptr_);} | 
 | private: | 
 |  | 
 | #ifdef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template <class _Up> | 
 |         explicit unique_ptr(_Up); | 
 |     template <class _Up> | 
 |         unique_ptr(_Up __u, | 
 |                    typename conditional< | 
 |                                        is_reference<deleter_type>::value, | 
 |                                        deleter_type, | 
 |                                        typename add_lvalue_reference<const deleter_type>::type>::type, | 
 |                    typename enable_if | 
 |                       < | 
 |                          is_convertible<_Up, pointer>::value, | 
 |                          __nat | 
 |                       >::type = __nat()); | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(unique_ptr<_Tp, _Dp>& __x, unique_ptr<_Tp, _Dp>& __y) {__x.swap(__y);} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator==(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() == __y.get();} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator!=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x == __y);} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator< (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __x.get() < __y.get();} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator> (const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return __y < __x;} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator<=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__y < __x);} | 
 |  | 
 | template <class _T1, class _D1, class _T2, class _D2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator>=(const unique_ptr<_T1, _D1>& __x, const unique_ptr<_T2, _D2>& __y) {return !(__x < __y);} | 
 |  | 
 | template <class> struct hash; | 
 |  | 
 | template<class _Tp> | 
 | struct _LIBCPP_VISIBLE hash<_Tp*> | 
 |     : public unary_function<_Tp*, size_t> | 
 | { | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     size_t operator()(_Tp* __v) const | 
 |     { | 
 |         const size_t* const __p = reinterpret_cast<const size_t*>(&__v); | 
 |         return *__p; | 
 |     } | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp> | 
 | struct _LIBCPP_VISIBLE hash<unique_ptr<_Tp, _Dp> > | 
 | { | 
 |     typedef unique_ptr<_Tp, _Dp> argument_type; | 
 |     typedef size_t               result_type; | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     result_type operator()(const argument_type& __ptr) const | 
 |     { | 
 |         typedef typename argument_type::pointer pointer; | 
 |         return hash<pointer>()(__ptr.get()); | 
 |     } | 
 | }; | 
 |  | 
 | struct __destruct_n | 
 | { | 
 | private: | 
 |     size_t size; | 
 |  | 
 |     template <class _Tp> | 
 |     _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) | 
 |         {for (size_t __i = 0; __i < size; ++__i, ++__p) __p->~_Tp();} | 
 |  | 
 |     template <class _Tp> | 
 |     _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) | 
 |         {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void __incr(false_type) | 
 |         {++size;} | 
 |     _LIBCPP_INLINE_VISIBILITY void __incr(true_type) | 
 |         {} | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) | 
 |         {size = __s;} | 
 |     _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) | 
 |         {} | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) : size(__s) {} | 
 |  | 
 |     template <class _Tp> | 
 |     _LIBCPP_INLINE_VISIBILITY void __incr(_Tp*) | 
 |         {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} | 
 |  | 
 |     template <class _Tp> | 
 |     _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) | 
 |         {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} | 
 |  | 
 |     template <class _Tp> | 
 |     _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) | 
 |         {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} | 
 | }; | 
 |  | 
 | template <class _Alloc> | 
 | class __allocator_destructor | 
 | { | 
 |     typedef allocator_traits<_Alloc> __alloc_traits; | 
 | public: | 
 |     typedef typename __alloc_traits::pointer pointer; | 
 |     typedef typename __alloc_traits::size_type size_type; | 
 | private: | 
 |     _Alloc& __alloc_; | 
 |     size_type __s_; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s) | 
 |         : __alloc_(__a), __s_(__s) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void operator()(pointer __p) {__alloc_traits::deallocate(__alloc_, __p, __s_);} | 
 | }; | 
 |  | 
 | template <class _InputIterator, class _ForwardIterator> | 
 | _ForwardIterator | 
 | uninitialized_copy(_InputIterator __f, _InputIterator __l, _ForwardIterator __r) | 
 | { | 
 |     __destruct_n __d(0); | 
 |     typedef typename iterator_traits<_ForwardIterator>::value_type value_type; | 
 |     unique_ptr<value_type, __destruct_n&> __h(&*__r, __d); | 
 |     for (; __f != __l; ++__f, ++__r, __d.__incr((value_type*)0)) | 
 |         ::new(&*__r) value_type(*__f); | 
 |     __h.release(); | 
 |     return __r; | 
 | } | 
 |  | 
 | template <class _InputIterator, class _Size, class _ForwardIterator> | 
 | _ForwardIterator | 
 | uninitialized_copy_n(_InputIterator __f, _Size __n, _ForwardIterator __r) | 
 | { | 
 |     __destruct_n __d(0); | 
 |     typedef typename iterator_traits<_ForwardIterator>::value_type value_type; | 
 |     unique_ptr<value_type, __destruct_n&> __h(&*__r, __d); | 
 |     for (; __n > 0; ++__f, ++__r, __d.__incr((value_type*)0), --__n) | 
 |         ::new(&*__r) value_type(*__f); | 
 |     __h.release(); | 
 |     return __r; | 
 | } | 
 |  | 
 | template <class _ForwardIterator, class _Tp> | 
 | void | 
 | uninitialized_fill(_ForwardIterator __f, _ForwardIterator __l, const _Tp& __x) | 
 | { | 
 |     __destruct_n __d(0); | 
 |     typedef typename iterator_traits<_ForwardIterator>::value_type value_type; | 
 |     unique_ptr<value_type, __destruct_n&> __h(&*__f, __d); | 
 |     for (; __f != __l; ++__f, __d.__incr((value_type*)0)) | 
 |         ::new(&*__f) value_type(__x); | 
 |     __h.release(); | 
 | } | 
 |  | 
 | template <class _ForwardIterator, class _Size, class _Tp> | 
 | _ForwardIterator | 
 | uninitialized_fill_n(_ForwardIterator __f, _Size __n, const _Tp& __x) | 
 | { | 
 |     __destruct_n __d(0); | 
 |     typedef typename iterator_traits<_ForwardIterator>::value_type value_type; | 
 |     unique_ptr<value_type, __destruct_n&> __h(&*__f, __d); | 
 |     for (; __n > 0; ++__f, --__n, __d.__incr((value_type*)0)) | 
 |         ::new(&*__f) value_type(__x); | 
 |     __h.release(); | 
 |     return __f; | 
 | } | 
 |  | 
 | class _LIBCPP_EXCEPTION_ABI bad_weak_ptr | 
 |     : public std::exception | 
 | { | 
 | public: | 
 |     virtual ~bad_weak_ptr() throw(); | 
 |     virtual const char* what() const throw(); | 
 | }; | 
 |  | 
 | template<class _Tp> class weak_ptr; | 
 |  | 
 | class __shared_count | 
 | { | 
 |     __shared_count(const __shared_count&); | 
 |     __shared_count& operator=(const __shared_count&); | 
 |  | 
 | protected: | 
 |     long __shared_owners_; | 
 |     virtual ~__shared_count(); | 
 | private: | 
 |     virtual void __on_zero_shared() = 0; | 
 |  | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit __shared_count(long __refs = 0) | 
 |         : __shared_owners_(__refs) {} | 
 |  | 
 |     void __add_shared(); | 
 |     bool __release_shared(); | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     long use_count() const {return __shared_owners_ + 1;} | 
 | }; | 
 |  | 
 | class __shared_weak_count | 
 |     : private __shared_count | 
 | { | 
 |     long __shared_weak_owners_; | 
 |  | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     explicit __shared_weak_count(long __refs = 0) | 
 |         : __shared_count(__refs), | 
 |           __shared_weak_owners_(__refs) {} | 
 | protected: | 
 |     virtual ~__shared_weak_count(); | 
 |  | 
 | public: | 
 |     void __add_shared(); | 
 |     void __add_weak(); | 
 |     void __release_shared(); | 
 |     void __release_weak(); | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     long use_count() const {return __shared_count::use_count();} | 
 |     __shared_weak_count* lock(); | 
 |  | 
 | #ifndef _LIBCPP_NO_RTTI | 
 |     virtual const void* __get_deleter(const type_info&) const; | 
 | #endif | 
 | private: | 
 |     virtual void __on_zero_shared_weak() = 0; | 
 | }; | 
 |  | 
 | template <class _Tp, class _Dp, class _Alloc> | 
 | class __shared_ptr_pointer | 
 |     : public __shared_weak_count | 
 | { | 
 |     __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_; | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a) | 
 |         :  __data_(__compressed_pair<_Tp, _Dp>(__p, _STD::move(__d)), _STD::move(__a)) {} | 
 |  | 
 | #ifndef _LIBCPP_NO_RTTI | 
 |     virtual const void* __get_deleter(const type_info&) const; | 
 | #endif | 
 |  | 
 | private: | 
 |     virtual void __on_zero_shared(); | 
 |     virtual void __on_zero_shared_weak(); | 
 | }; | 
 |  | 
 | #ifndef _LIBCPP_NO_RTTI | 
 |  | 
 | template <class _Tp, class _Dp, class _Alloc> | 
 | const void* | 
 | __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const | 
 | { | 
 |     return __t == typeid(_Dp) ? &__data_.first().second() : 0; | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_NO_RTTI | 
 |  | 
 | template <class _Tp, class _Dp, class _Alloc> | 
 | void | 
 | __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() | 
 | { | 
 |     __data_.first().second()(__data_.first().first()); | 
 |     __data_.first().second().~_Dp(); | 
 | } | 
 |  | 
 | template <class _Tp, class _Dp, class _Alloc> | 
 | void | 
 | __shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() | 
 | { | 
 |     typename _Alloc::template rebind<__shared_ptr_pointer>::other __a(__data_.second()); | 
 |     __data_.second().~_Alloc(); | 
 |     __a.deallocate(this, 1); | 
 | } | 
 |  | 
 | template <class _Tp, class _Alloc> | 
 | class __shared_ptr_emplace | 
 |     : public __shared_weak_count | 
 | { | 
 |     __compressed_pair<_Alloc, _Tp> __data_; | 
 | public: | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __shared_ptr_emplace(_Alloc __a) | 
 |         :  __data_(_STD::move(__a)) {} | 
 |  | 
 |     template <class ..._Args> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         __shared_ptr_emplace(_Alloc __a, _Args&& ...__args) | 
 |             :  __data_(_STD::move(__a), _Tp(_STD::forward<_Args>(__args)...)) {} | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     __shared_ptr_emplace(_Alloc __a) | 
 |         :  __data_(__a) {} | 
 |  | 
 |     template <class _A0> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         __shared_ptr_emplace(_Alloc __a, _A0& __a0) | 
 |             :  __data_(__a, _Tp(__a0)) {} | 
 |  | 
 |     template <class _A0, class _A1> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1) | 
 |             :  __data_(__a, _Tp(__a0, __a1)) {} | 
 |  | 
 |     template <class _A0, class _A1, class _A2> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         __shared_ptr_emplace(_Alloc __a, _A0& __a0, _A1& __a1, _A2& __a2) | 
 |             :  __data_(__a, _Tp(__a0, __a1, __a2)) {} | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | private: | 
 |     virtual void __on_zero_shared(); | 
 |     virtual void __on_zero_shared_weak(); | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     _Tp* get() {return &__data_.second();} | 
 | }; | 
 |  | 
 | template <class _Tp, class _Alloc> | 
 | void | 
 | __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared() | 
 | { | 
 |     __data_.second().~_Tp(); | 
 | } | 
 |  | 
 | template <class _Tp, class _Alloc> | 
 | void | 
 | __shared_ptr_emplace<_Tp, _Alloc>::__on_zero_shared_weak() | 
 | { | 
 |     typename _Alloc::template rebind<__shared_ptr_emplace>::other __a(__data_.first()); | 
 |     __data_.first().~_Alloc(); | 
 |     __a.deallocate(this, 1); | 
 | } | 
 |  | 
 | template<class _Tp> class enable_shared_from_this; | 
 |  | 
 | template<class _Tp> | 
 | class _LIBCPP_VISIBLE shared_ptr | 
 | { | 
 | public: | 
 |     typedef _Tp element_type; | 
 | private: | 
 |     element_type*      __ptr_; | 
 |     __shared_weak_count* __cntrl_; | 
 |  | 
 |     struct __nat {int __for_bool_;}; | 
 | public: | 
 |     shared_ptr(); | 
 |     shared_ptr(nullptr_t); | 
 |     template<class _Yp> explicit shared_ptr(_Yp* __p); | 
 |     template<class _Yp, class _Dp> shared_ptr(_Yp* __p, _Dp __d); | 
 |     template<class _Yp, class _Dp, class _Alloc> shared_ptr(_Yp* __p, _Dp __d, _Alloc __a); | 
 |     template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d); | 
 |     template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a); | 
 |     template<class _Yp> shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p); | 
 |     shared_ptr(const shared_ptr& __r); | 
 |     template<class _Yp> | 
 |         shared_ptr(const shared_ptr<_Yp>& __r, | 
 |                    typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()); | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     shared_ptr(shared_ptr&& __r); | 
 |     template<class _Yp> shared_ptr(shared_ptr<_Yp>&& __r, | 
 |                    typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()); | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r, | 
 |                    typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type= __nat()); | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template<class _Yp> shared_ptr(auto_ptr<_Yp>&& __r); | 
 | #else | 
 |     template<class _Yp> shared_ptr(auto_ptr<_Yp> __r); | 
 | #endif | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | private: | 
 |     template <class _Yp, class _Dp> shared_ptr(const unique_ptr<_Yp, _Dp>& __r);// = delete; | 
 | public: | 
 |     template <class _Yp, class _Dp> shared_ptr(unique_ptr<_Yp, _Dp>&&, | 
 |        typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); | 
 |     template <class _Yp, class _Dp> shared_ptr(unique_ptr<_Yp, _Dp>&&, | 
 |        typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template <class _Yp, class _Dp> shared_ptr(unique_ptr<_Yp, _Dp>, | 
 |        typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); | 
 |     template <class _Yp, class _Dp> shared_ptr(unique_ptr<_Yp, _Dp>, | 
 |        typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type = __nat()); | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 |     ~shared_ptr(); | 
 |  | 
 |     shared_ptr& operator=(const shared_ptr& __r); | 
 |     template<class _Yp> shared_ptr& operator=(const shared_ptr<_Yp>& __r); | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     shared_ptr& operator=(shared_ptr&& __r); | 
 |     template<class _Yp> shared_ptr& operator=(shared_ptr<_Yp>&& __r); | 
 |     template<class _Yp> shared_ptr& operator=(auto_ptr<_Yp>&& __r); | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template<class _Yp> shared_ptr& operator=(auto_ptr<_Yp> __r); | 
 | #endif | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | private: | 
 |     template <class _Yp, class _Dp> shared_ptr& operator=(const unique_ptr<_Yp, _Dp>& __r);// = delete; | 
 | public: | 
 |     template <class _Yp, class _Dp> shared_ptr& operator=(unique_ptr<_Yp, _Dp>&& __r); | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |     template <class _Yp, class _Dp> shared_ptr& operator=(unique_ptr<_Yp, _Dp> __r); | 
 | #endif | 
 |  | 
 |     void swap(shared_ptr& __r); | 
 |     void reset(); | 
 |     template<class _Yp> void reset(_Yp* __p); | 
 |     template<class _Yp, class _Dp> void reset(_Yp* __p, _Dp __d); | 
 |     template<class _Yp, class _Dp, class _Alloc> void reset(_Yp* __p, _Dp __d, _Alloc __a); | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     element_type* get() const {return __ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     typename add_lvalue_reference<element_type>::type operator*() const {return *__ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     element_type* operator->() const {return __ptr_;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     long use_count() const {return __cntrl_ ? __cntrl_->use_count() : 0;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool unique() const {return use_count() == 1;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool empty() const {return __cntrl_ == 0;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     /*explicit*/ operator bool() const {return get() != 0;} | 
 |     template <class _U> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool owner_before(shared_ptr<_U> const& __p) const | 
 |         {return __cntrl_ < __p.__cntrl_;} | 
 |     template <class _U> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool owner_before(weak_ptr<_U> const& __p) const | 
 |         {return __cntrl_ < __p.__cntrl_;} | 
 |  | 
 | #ifndef _LIBCPP_NO_RTTI | 
 |     template <class _Dp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         _Dp* __get_deleter() const | 
 |             {return (_Dp*)(__cntrl_ ? __cntrl_->__get_deleter(typeid(_Dp)) : 0);} | 
 | #endif  // _LIBCPP_NO_RTTI | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     template<class ..._Args> | 
 |         static | 
 |         shared_ptr<_Tp> | 
 |         make_shared(_Args&& ...__args); | 
 |  | 
 |     template<class _Alloc, class ..._Args> | 
 |         static | 
 |         shared_ptr<_Tp> | 
 |         allocate_shared(const _Alloc& __a, _Args&& ...__args); | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 |     static shared_ptr<_Tp> make_shared(); | 
 |  | 
 |     template<class _A0> | 
 |         static shared_ptr<_Tp> make_shared(_A0&); | 
 |  | 
 |     template<class _A0, class _A1> | 
 |         static shared_ptr<_Tp> make_shared(_A0&, _A1&); | 
 |  | 
 |     template<class _A0, class _A1, class _A2> | 
 |         static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&); | 
 |  | 
 |     template<class _Alloc> | 
 |         static shared_ptr<_Tp> | 
 |         allocate_shared(const _Alloc& __a); | 
 |  | 
 |     template<class _Alloc, class _A0> | 
 |         static shared_ptr<_Tp> | 
 |         allocate_shared(const _Alloc& __a, _A0& __a0); | 
 |  | 
 |     template<class _Alloc, class _A0, class _A1> | 
 |         static shared_ptr<_Tp> | 
 |         allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1); | 
 |  | 
 |     template<class _Alloc, class _A0, class _A1, class _A2> | 
 |         static shared_ptr<_Tp> | 
 |         allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2); | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | private: | 
 |  | 
 |     template <class _Yp> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         void | 
 |         __enable_weak_this(const enable_shared_from_this<_Yp>* __e) | 
 |         { | 
 |             if (__e) | 
 |                 __e->__weak_this_ = *this; | 
 |         } | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     void __enable_weak_this(const void*) {} | 
 |  | 
 |     template <class _Up> friend class _LIBCPP_VISIBLE shared_ptr; | 
 |     template <class _Up> friend class _LIBCPP_VISIBLE weak_ptr; | 
 | }; | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr() | 
 |     : __ptr_(0), | 
 |       __cntrl_(0) | 
 | { | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(nullptr_t) | 
 |     : __ptr_(0), | 
 |       __cntrl_(0) | 
 | { | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | shared_ptr<_Tp>::shared_ptr(_Yp* __p) | 
 |     : __ptr_(__p) | 
 | { | 
 |     unique_ptr<_Yp> __hold(__p); | 
 |     typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; | 
 |     __cntrl_ = new _CntrlBlk(__p, default_delete<_Yp>(), allocator<_Yp>()); | 
 |     __hold.release(); | 
 |     __enable_weak_this(__p); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp, class _Dp> | 
 | shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d) | 
 |     : __ptr_(__p) | 
 | { | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     try | 
 |     { | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 |         typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; | 
 |         __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Yp>()); | 
 |         __enable_weak_this(__p); | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     } | 
 |     catch (...) | 
 |     { | 
 |         __d(__p); | 
 |         throw; | 
 |     } | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Dp> | 
 | shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d) | 
 |     : __ptr_(0) | 
 | { | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     try | 
 |     { | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 |         typedef __shared_ptr_pointer<nullptr_t, _Dp, allocator<_Tp> > _CntrlBlk; | 
 |         __cntrl_ = new _CntrlBlk(__p, __d, allocator<_Tp>()); | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     } | 
 |     catch (...) | 
 |     { | 
 |         __d(__p); | 
 |         throw; | 
 |     } | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp, class _Dp, class _Alloc> | 
 | shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a) | 
 |     : __ptr_(__p) | 
 | { | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     try | 
 |     { | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 |         typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk; | 
 |         typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; | 
 |         typedef __allocator_destructor<_A2> _D2; | 
 |         _A2 __a2(__a); | 
 |         unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); | 
 |         ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); | 
 |         __cntrl_ = __hold2.release(); | 
 |         __enable_weak_this(__p); | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     } | 
 |     catch (...) | 
 |     { | 
 |         __d(__p); | 
 |         throw; | 
 |     } | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Dp, class _Alloc> | 
 | shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a) | 
 |     : __ptr_(0) | 
 | { | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     try | 
 |     { | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 |         typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk; | 
 |         typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; | 
 |         typedef __allocator_destructor<_A2> _D2; | 
 |         _A2 __a2(__a); | 
 |         unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); | 
 |         ::new(__hold2.get()) _CntrlBlk(__p, __d, __a); | 
 |         __cntrl_ = __hold2.release(); | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |     } | 
 |     catch (...) | 
 |     { | 
 |         __d(__p); | 
 |         throw; | 
 |     } | 
 | #endif  // _LIBCPP_NO_EXCEPTIONS | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) | 
 |     : __ptr_(__p), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_shared(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_shared(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, | 
 |                             typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_shared(); | 
 | } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     __r.__ptr_ = 0; | 
 |     __r.__cntrl_ = 0; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r, | 
 |                             typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     __r.__ptr_ = 0; | 
 |     __r.__cntrl_ = 0; | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r) | 
 | #else | 
 | shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp> __r) | 
 | #endif | 
 |     : __ptr_(__r.get()) | 
 | { | 
 |     typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk; | 
 |     __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>()); | 
 |     __enable_weak_this(__r.get()); | 
 |     __r.release(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template <class _Yp, class _Dp> | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, | 
 | #else | 
 | shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, | 
 | #endif | 
 |            typename enable_if<!is_lvalue_reference<_Dp>::value, __nat>::type) | 
 |     : __ptr_(__r.get()) | 
 | { | 
 |     typedef __shared_ptr_pointer<_Yp*, _Dp, allocator<_Yp> > _CntrlBlk; | 
 |     __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), allocator<_Yp>()); | 
 |     __enable_weak_this(__r.get()); | 
 |     __r.release(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template <class _Yp, class _Dp> | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 | shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r, | 
 | #else | 
 | shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp> __r, | 
 | #endif | 
 |            typename enable_if<is_lvalue_reference<_Dp>::value, __nat>::type) | 
 |     : __ptr_(__r.get()) | 
 | { | 
 |     typedef __shared_ptr_pointer<_Yp*, | 
 |                                  reference_wrapper<typename remove_reference<_Dp>::type>, | 
 |                                  allocator<_Yp> > _CntrlBlk; | 
 |     __cntrl_ = new _CntrlBlk(__r.get(), ref(__r.get_deleter()), allocator<_Yp>()); | 
 |     __enable_weak_this(__r.get()); | 
 |     __r.release(); | 
 | } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp> | 
 | template<class ..._Args> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::make_shared(_Args&& ...__args) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; | 
 |     typedef allocator<_CntrlBlk> _A2; | 
 |     typedef __allocator_destructor<_A2> _D2; | 
 |     _A2 __a2; | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a2, _STD::forward<_Args>(__args)...); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Alloc, class ..._Args> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; | 
 |     typedef typename _Alloc::template rebind<_CntrlBlk>::other _A2; | 
 |     typedef __allocator_destructor<_A2> _D2; | 
 |     _A2 __a2(__a); | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a, _STD::forward<_Args>(__args)...); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::make_shared() | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; | 
 |     typedef allocator<_CntrlBlk> _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2; | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__alloc2); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _A0> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::make_shared(_A0& __a0) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; | 
 |     typedef allocator<_CntrlBlk> _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2; | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _A0, class _A1> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; | 
 |     typedef allocator<_CntrlBlk> _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2; | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _A0, class _A1, class _A2> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk; | 
 |     typedef allocator<_CntrlBlk> _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2; | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Alloc> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::allocate_shared(const _Alloc& __a) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; | 
 |     typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2(__a); | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Alloc, class _A0> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; | 
 |     typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2(__a); | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a, __a0); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Alloc, class _A0, class _A1> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; | 
 |     typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2(__a); | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Alloc, class _A0, class _A1, class _A2> | 
 | shared_ptr<_Tp> | 
 | shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) | 
 | { | 
 |     typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk; | 
 |     typedef typename _Alloc::template rebind<_CntrlBlk>::other _Alloc2; | 
 |     typedef __allocator_destructor<_Alloc2> _D2; | 
 |     _Alloc2 __alloc2(__a); | 
 |     unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1)); | 
 |     ::new(__hold2.get()) _CntrlBlk(__a, __a0, __a1, __a2); | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__ptr_ = __hold2.get()->get(); | 
 |     __r.__cntrl_ = __hold2.release(); | 
 |     __r.__enable_weak_this(__r.__ptr_); | 
 |     return __r; | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp> | 
 | shared_ptr<_Tp>::~shared_ptr() | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__release_shared(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(const shared_ptr& __r) | 
 | { | 
 |     shared_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) | 
 | { | 
 |     shared_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(shared_ptr&& __r) | 
 | { | 
 |     shared_ptr(_STD::move(__r)).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r) | 
 | { | 
 |     shared_ptr(_STD::move(__r)).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r) | 
 | { | 
 |     shared_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template <class _Yp, class _Dp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r) | 
 | { | 
 |     shared_ptr(_STD::move(__r)).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(auto_ptr<_Yp> __r) | 
 | { | 
 |     shared_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template <class _Yp, class _Dp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp>& | 
 | shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp> __r) | 
 | { | 
 |     shared_ptr(_STD::move(__r)).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | shared_ptr<_Tp>::swap(shared_ptr& __r) | 
 | { | 
 |     _STD::swap(__ptr_, __r.__ptr_); | 
 |     _STD::swap(__cntrl_, __r.__cntrl_); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | shared_ptr<_Tp>::reset() | 
 | { | 
 |     shared_ptr().swap(*this); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | shared_ptr<_Tp>::reset(_Yp* __p) | 
 | { | 
 |     shared_ptr(__p).swap(*this); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp, class _Dp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d) | 
 | { | 
 |     shared_ptr(__p, __d).swap(*this); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp, class _Dp, class _Alloc> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a) | 
 | { | 
 |     shared_ptr(__p, __d, __a).swap(*this); | 
 | } | 
 |  | 
 | #ifndef _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp, class ..._Args> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | make_shared(_Args&& ...__args) | 
 | { | 
 |     return shared_ptr<_Tp>::make_shared(_STD::forward<_Args>(__args)...); | 
 | } | 
 |  | 
 | template<class _Tp, class _Alloc, class ..._Args> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | allocate_shared(const _Alloc& __a, _Args&& ...__args) | 
 | { | 
 |     return shared_ptr<_Tp>::allocate_shared(__a, _STD::forward<_Args>(__args)...); | 
 | } | 
 |  | 
 | #else  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | make_shared() | 
 | { | 
 |     return shared_ptr<_Tp>::make_shared(); | 
 | } | 
 |  | 
 | template<class _Tp, class _A0> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | make_shared(_A0& __a0) | 
 | { | 
 |     return shared_ptr<_Tp>::make_shared(__a0); | 
 | } | 
 |  | 
 | template<class _Tp, class _A0, class _A1> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | make_shared(_A0& __a0, _A1& __a1) | 
 | { | 
 |     return shared_ptr<_Tp>::make_shared(__a0, __a1); | 
 | } | 
 |  | 
 | template<class _Tp, class _A0, class _A1, class _A2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | make_shared(_A0& __a0, _A1& __a1, _A2& __a2) | 
 | { | 
 |     return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2); | 
 | } | 
 |  | 
 | template<class _Tp, class _Alloc> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | allocate_shared(const _Alloc& __a) | 
 | { | 
 |     return shared_ptr<_Tp>::allocate_shared(__a); | 
 | } | 
 |  | 
 | template<class _Tp, class _Alloc, class _A0> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | allocate_shared(const _Alloc& __a, _A0& __a0) | 
 | { | 
 |     return shared_ptr<_Tp>::allocate_shared(__a, __a0); | 
 | } | 
 |  | 
 | template<class _Tp, class _Alloc, class _A0, class _A1> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1) | 
 | { | 
 |     return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1); | 
 | } | 
 |  | 
 | template<class _Tp, class _Alloc, class _A0, class _A1, class _A2> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2) | 
 | { | 
 |     return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2); | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_HAS_NO_VARIADICS | 
 |  | 
 | template<class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) | 
 | { | 
 |     return __x.get() == __y.get(); | 
 | } | 
 |  | 
 | template<class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) | 
 | { | 
 |     return !(__x == __y); | 
 | } | 
 |  | 
 | template<class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | bool | 
 | operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) | 
 | { | 
 |     return __x.get() < __y.get(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) | 
 | { | 
 |     __x.swap(__y); | 
 | } | 
 |  | 
 | template<class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | static_pointer_cast(const shared_ptr<_Up>& __r) | 
 | { | 
 |     return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); | 
 | } | 
 |  | 
 | template<class _Tp, class _Up> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | shared_ptr<_Tp> | 
 | dynamic_pointer_cast(const shared_ptr<_Up>& __r) | 
 | { | 
 |     _Tp* __p = dynamic_cast<_Tp*>(__r.get()); | 
 |     return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>(); | 
 | } | 
 |  | 
 | template<class _Tp, class _Up> | 
 | shared_ptr<_Tp> | 
 | const_pointer_cast(const shared_ptr<_Up>& __r) | 
 | { | 
 |     return shared_ptr<_Tp>(__r, const_cast<_Tp*>(__r.get())); | 
 | } | 
 |  | 
 | #ifndef _LIBCPP_NO_RTTI | 
 |  | 
 | template<class _Dp, class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | _Dp* | 
 | get_deleter(const shared_ptr<_Tp>& __p) | 
 | { | 
 |     return __p.template __get_deleter<_Dp>(); | 
 | } | 
 |  | 
 | #endif  // _LIBCPP_NO_RTTI | 
 |  | 
 | template<class _Tp> | 
 | class _LIBCPP_VISIBLE weak_ptr | 
 | { | 
 | public: | 
 |     typedef _Tp element_type; | 
 | private: | 
 |     element_type*        __ptr_; | 
 |     __shared_weak_count* __cntrl_; | 
 |  | 
 | public: | 
 |     weak_ptr(); | 
 |     template<class _Yp> weak_ptr(shared_ptr<_Yp> const& __r, | 
 |                    typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()); | 
 |     weak_ptr(weak_ptr const& __r); | 
 |     template<class _Yp> weak_ptr(weak_ptr<_Yp> const& __r, | 
 |                    typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type = __nat()); | 
 |  | 
 |     ~weak_ptr(); | 
 |  | 
 |     weak_ptr& operator=(weak_ptr const& __r); | 
 |     template<class _Yp> weak_ptr& operator=(weak_ptr<_Yp> const& __r); | 
 |     template<class _Yp> weak_ptr& operator=(shared_ptr<_Yp> const& __r); | 
 |  | 
 |     void swap(weak_ptr& __r); | 
 |     void reset(); | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     long use_count() const {return __cntrl_ ? __cntrl_->use_count() : 0;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool expired() const {return __cntrl_ == 0 || __cntrl_->use_count() == 0;} | 
 |     shared_ptr<_Tp> lock() const; | 
 |     template<class _Up> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool owner_before(const shared_ptr<_Up>& __r) const | 
 |         {return __cntrl_ < __r.__cntrl_;} | 
 |     template<class _Up> | 
 |         _LIBCPP_INLINE_VISIBILITY | 
 |         bool owner_before(const weak_ptr<_Up>& __r) const | 
 |         {return __cntrl_ < __r.__cntrl_;} | 
 |  | 
 |     template <class _Up> friend class _LIBCPP_VISIBLE weak_ptr; | 
 |     template <class _Up> friend class _LIBCPP_VISIBLE shared_ptr; | 
 | }; | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>::weak_ptr() | 
 |     : __ptr_(0), | 
 |       __cntrl_(0) | 
 | { | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_weak(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r, | 
 |                         typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_weak(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r, | 
 |                         typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_) | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__add_weak(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | weak_ptr<_Tp>::~weak_ptr() | 
 | { | 
 |     if (__cntrl_) | 
 |         __cntrl_->__release_weak(); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>& | 
 | weak_ptr<_Tp>::operator=(weak_ptr const& __r) | 
 | { | 
 |     weak_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>& | 
 | weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) | 
 | { | 
 |     weak_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | weak_ptr<_Tp>& | 
 | weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) | 
 | { | 
 |     weak_ptr(__r).swap(*this); | 
 |     return *this; | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | weak_ptr<_Tp>::swap(weak_ptr& __r) | 
 | { | 
 |     _STD::swap(__ptr_, __r.__ptr_); | 
 |     _STD::swap(__cntrl_, __r.__cntrl_); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) | 
 | { | 
 |     __x.swap(__y); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | void | 
 | weak_ptr<_Tp>::reset() | 
 | { | 
 |     weak_ptr().swap(*this); | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | template<class _Yp> | 
 | shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r, | 
 |                             typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat>::type) | 
 |     : __ptr_(__r.__ptr_), | 
 |       __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_) | 
 | { | 
 |     if (__cntrl_ == 0) | 
 | #ifndef _LIBCPP_NO_EXCEPTIONS | 
 |         throw bad_weak_ptr(); | 
 | #else | 
 |         assert(!"bad_weak_ptr"); | 
 | #endif | 
 | } | 
 |  | 
 | template<class _Tp> | 
 | shared_ptr<_Tp> | 
 | weak_ptr<_Tp>::lock() const | 
 | { | 
 |     shared_ptr<_Tp> __r; | 
 |     __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_; | 
 |     if (__r.__cntrl_) | 
 |         __r.__ptr_ = __ptr_; | 
 |     return __r; | 
 | } | 
 |  | 
 | template <class _Tp> struct owner_less; | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE owner_less<shared_ptr<_Tp> > | 
 |     : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool> | 
 | { | 
 |     typedef bool result_type; | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(shared_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(  weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE owner_less<weak_ptr<_Tp> > | 
 |     : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool> | 
 | { | 
 |     typedef bool result_type; | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(  weak_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(shared_ptr<_Tp> const& __x,   weak_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     bool operator()(  weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const | 
 |         {return __x.owner_before(__y);} | 
 | }; | 
 |  | 
 | template<class _Tp> | 
 | class _LIBCPP_VISIBLE enable_shared_from_this | 
 | { | 
 |     mutable weak_ptr<_Tp> __weak_this_; | 
 | protected: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     enable_shared_from_this() {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     enable_shared_from_this(enable_shared_from_this const&) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     enable_shared_from_this& operator=(enable_shared_from_this const&) {return *this;} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     ~enable_shared_from_this() {} | 
 | public: | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     shared_ptr<_Tp> shared_from_this() {return shared_ptr<_Tp>(__weak_this_);} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     shared_ptr<_Tp const> shared_from_this() const {return shared_ptr<const _Tp>(__weak_this_);} | 
 |  | 
 |     template <class _Up> friend class shared_ptr; | 
 | }; | 
 |  | 
 | template <class _Tp> | 
 | struct _LIBCPP_VISIBLE hash<shared_ptr<_Tp> > | 
 | { | 
 |     typedef shared_ptr<_Tp>      argument_type; | 
 |     typedef size_t               result_type; | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     result_type operator()(const argument_type& __ptr) const | 
 |     { | 
 |         return hash<_Tp*>()(__ptr.get()); | 
 |     } | 
 | }; | 
 |  | 
 | //enum class | 
 | struct _LIBCPP_VISIBLE pointer_safety | 
 | { | 
 |     enum _ | 
 |     { | 
 |         relaxed, | 
 |         preferred, | 
 |         strict | 
 |     }; | 
 |  | 
 |     _ __v_; | 
 |  | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     pointer_safety(_ __v) : __v_(__v) {} | 
 |     _LIBCPP_INLINE_VISIBILITY | 
 |     operator int() const {return __v_;} | 
 | }; | 
 |  | 
 | void declare_reachable(void* __p); | 
 | void declare_no_pointers(char* __p, size_t __n); | 
 | void undeclare_no_pointers(char* __p, size_t __n); | 
 | pointer_safety get_pointer_safety(); | 
 | void* __undeclare_reachable(void*); | 
 |  | 
 | template <class _Tp> | 
 | inline _LIBCPP_INLINE_VISIBILITY | 
 | _Tp* | 
 | undeclare_reachable(_Tp* __p) | 
 | { | 
 |     return static_cast<_Tp*>(__undeclare_reachable(__p)); | 
 | } | 
 |  | 
 | void* align(size_t, size_t, void*&, size_t&); | 
 |  | 
 | _LIBCPP_END_NAMESPACE_STD | 
 |  | 
 | #endif  // _LIBCPP_MEMORY |