Restoring authorship annotation for Andrey Khalyavin <[email protected]>. Commit 1 of 2.

1 files changed, 946 insertions, 946 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/memory b/contrib/libs/cxxsupp/libcxx/include/memory
index 1975092ba0a..53722b5232e 100644
--- a/contrib/libs/cxxsupp/libcxx/include/memory
+++ b/contrib/libs/cxxsupp/libcxx/include/memory
@@ -1,964 +1,964 @@
-// -*- C++ -*-
-//===-------------------------- memory ------------------------------------===//
-//
+// -*- C++ -*- 
+//===-------------------------- memory ------------------------------------===// 
+// 
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_MEMORY
-#define _LIBCPP_MEMORY
-
-/*
-    memory synopsis
-
-namespace std
-{
-
-struct allocator_arg_t { };
-inline 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 T>
-struct pointer_traits<T*>
-{
-    typedef T* pointer;
-    typedef T element_type;
-    typedef ptrdiff_t difference_type;
-
-    template <class U> using rebind = U*;
-
+// 
+//===----------------------------------------------------------------------===// 
+ 
+#ifndef _LIBCPP_MEMORY 
+#define _LIBCPP_MEMORY 
+ 
+/* 
+    memory synopsis 
+ 
+namespace std 
+{ 
+ 
+struct allocator_arg_t { }; 
+inline 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 T> 
+struct pointer_traits<T*> 
+{ 
+    typedef T* pointer; 
+    typedef T element_type; 
+    typedef ptrdiff_t difference_type; 
+ 
+    template <class U> using rebind = U*; 
+ 
     static pointer pointer_to(<details>) noexcept; // constexpr in C++20
-};
-
-template <class T> constexpr T* to_address(T* p) noexcept; // C++20
-template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept; // C++20
-
-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;
-    typedef Alloc::is_always_equal
-          | is_empty                     is_always_equal;
-
-    template <class T> using rebind_alloc  = Alloc::rebind<T>::other | Alloc<T, Args...>;
-    template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
-
-    static pointer allocate(allocator_type& a, size_type n);                          // constexpr and [[nodiscard]] in C++20
-    static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // constexpr and [[nodiscard]] in C++20
-
-    static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; // constexpr in C++20
-
-    template <class T, class... Args>
-    static void construct(allocator_type& a, T* p, Args&&... args); // constexpr in C++20
-
-    template <class T>
-    static void destroy(allocator_type& a, T* p); // constexpr in C++20
-
-    static size_type max_size(const allocator_type& a); // noexcept in C++14, constexpr in C++20
-    static allocator_type select_on_container_copy_construction(const allocator_type& a); // constexpr in C++20
-};
-
-template <>
-class allocator<void> // removed in C++20
-{
-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;                           // deprecated in C++17, removed in C++20
-    typedef const T*  const_pointer;                     // deprecated in C++17, removed in C++20
-    typedef typename add_lvalue_reference<T>::type
-                      reference;                         // deprecated in C++17, removed in C++20
-    typedef typename add_lvalue_reference<const T>::type
-                      const_reference;                   // deprecated in C++17, removed in C++20
-
+}; 
+ 
+template <class T> constexpr T* to_address(T* p) noexcept; // C++20 
+template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept; // C++20 
+ 
+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; 
+    typedef Alloc::is_always_equal 
+          | is_empty                     is_always_equal; 
+ 
+    template <class T> using rebind_alloc  = Alloc::rebind<T>::other | Alloc<T, Args...>; 
+    template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>; 
+ 
+    static pointer allocate(allocator_type& a, size_type n);                          // constexpr and [[nodiscard]] in C++20 
+    static pointer allocate(allocator_type& a, size_type n, const_void_pointer hint); // constexpr and [[nodiscard]] in C++20 
+ 
+    static void deallocate(allocator_type& a, pointer p, size_type n) noexcept; // constexpr in C++20 
+ 
+    template <class T, class... Args> 
+    static void construct(allocator_type& a, T* p, Args&&... args); // constexpr in C++20 
+ 
+    template <class T> 
+    static void destroy(allocator_type& a, T* p); // constexpr in C++20 
+ 
+    static size_type max_size(const allocator_type& a); // noexcept in C++14, constexpr in C++20 
+    static allocator_type select_on_container_copy_construction(const allocator_type& a); // constexpr in C++20 
+}; 
+ 
+template <> 
+class allocator<void> // removed in C++20 
+{ 
+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;                           // deprecated in C++17, removed in C++20 
+    typedef const T*  const_pointer;                     // deprecated in C++17, removed in C++20 
+    typedef typename add_lvalue_reference<T>::type 
+                      reference;                         // deprecated in C++17, removed in C++20 
+    typedef typename add_lvalue_reference<const T>::type 
+                      const_reference;                   // deprecated in C++17, removed in C++20 
+ 
     typedef T         value_type;
-
-    template <class U> struct rebind {typedef allocator<U> other;}; // deprecated in C++17, removed in C++20
-
-    typedef true_type propagate_on_container_move_assignment;
-    typedef true_type is_always_equal;
-
-    constexpr allocator() noexcept;                      // constexpr in C++20
-    constexpr allocator(const allocator&) noexcept;      // constexpr in C++20
-    template <class U>
-      constexpr allocator(const allocator<U>&) noexcept; // constexpr in C++20
-    ~allocator();                                        // constexpr in C++20
-    pointer address(reference x) const noexcept;             // deprecated in C++17, removed in C++20
-    const_pointer address(const_reference x) const noexcept; // deprecated in C++17, removed in C++20
-    T* allocate(size_t n, const void* hint);          // deprecated in C++17, removed in C++20
-    T* allocate(size_t n);                              // constexpr in C++20
-    void deallocate(T* p, size_t n) noexcept;           // constexpr in C++20
-    size_type max_size() const noexcept;              // deprecated in C++17, removed in C++20
-    template<class U, class... Args>
-        void construct(U* p, Args&&... args);         // deprecated in C++17, removed in C++20
-    template <class U>
-        void destroy(U* p);                           // deprecated in C++17, removed in C++20
-};
-
-template <class T, class U>
-bool operator==(const allocator<T>&, const allocator<U>&) noexcept; // constexpr in C++20
-
-template <class T, class U>
-bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; // constexpr in C++20
-
-template <class OutputIterator, class T>
-class raw_storage_iterator // deprecated in C++17, removed in C++20
-    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
-{
-public:
-    typedef output_iterator_tag iterator_category;
-    typedef void                value_type;
-    typedef void                difference_type; // until C++20
-    typedef ptrdiff_t           difference_type; // since C++20
-    typedef void                pointer;
-    typedef void                reference;
-
-    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) noexcept;
-template <class T> void               return_temporary_buffer(T* p) noexcept;
-
-template <class T> T* addressof(T& r) noexcept;
+ 
+    template <class U> struct rebind {typedef allocator<U> other;}; // deprecated in C++17, removed in C++20 
+ 
+    typedef true_type propagate_on_container_move_assignment; 
+    typedef true_type is_always_equal; 
+ 
+    constexpr allocator() noexcept;                      // constexpr in C++20 
+    constexpr allocator(const allocator&) noexcept;      // constexpr in C++20 
+    template <class U> 
+      constexpr allocator(const allocator<U>&) noexcept; // constexpr in C++20 
+    ~allocator();                                        // constexpr in C++20 
+    pointer address(reference x) const noexcept;             // deprecated in C++17, removed in C++20 
+    const_pointer address(const_reference x) const noexcept; // deprecated in C++17, removed in C++20 
+    T* allocate(size_t n, const void* hint);          // deprecated in C++17, removed in C++20 
+    T* allocate(size_t n);                              // constexpr in C++20 
+    void deallocate(T* p, size_t n) noexcept;           // constexpr in C++20 
+    size_type max_size() const noexcept;              // deprecated in C++17, removed in C++20 
+    template<class U, class... Args> 
+        void construct(U* p, Args&&... args);         // deprecated in C++17, removed in C++20 
+    template <class U> 
+        void destroy(U* p);                           // deprecated in C++17, removed in C++20 
+}; 
+ 
+template <class T, class U> 
+bool operator==(const allocator<T>&, const allocator<U>&) noexcept; // constexpr in C++20 
+ 
+template <class T, class U> 
+bool operator!=(const allocator<T>&, const allocator<U>&) noexcept; // constexpr in C++20 
+ 
+template <class OutputIterator, class T> 
+class raw_storage_iterator // deprecated in C++17, removed in C++20 
+    : public iterator<output_iterator_tag, void, void, void, void> // until C++17 
+{ 
+public: 
+    typedef output_iterator_tag iterator_category; 
+    typedef void                value_type; 
+    typedef void                difference_type; // until C++20 
+    typedef ptrdiff_t           difference_type; // since C++20 
+    typedef void                pointer; 
+    typedef void                reference; 
+ 
+    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) noexcept; 
+template <class T> void               return_temporary_buffer(T* p) noexcept; 
+ 
+template <class T> T* addressof(T& r) noexcept; 
 template <class T> T* addressof(const T&& r) noexcept = delete;
-
-template <class InputIterator, class ForwardIterator>
-ForwardIterator
-uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result);
-
-template <class InputIterator, class Size, class ForwardIterator>
-ForwardIterator
-uninitialized_copy_n(InputIterator first, Size n, 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 T, class ...Args>
-constexpr T* construct_at(T* location, Args&& ...args); // since C++20
-
-template <class T>
-void destroy_at(T* location); // constexpr in C++20
-
-template <class ForwardIterator>
-void destroy(ForwardIterator first, ForwardIterator last); // constexpr in C++20
-
-template <class ForwardIterator, class Size>
-ForwardIterator destroy_n(ForwardIterator first, Size n); // constexpr in C++20
-
-template <class InputIterator, class ForwardIterator>
- ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result);
-
-template <class InputIterator, class Size, class ForwardIterator>
- pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result);
-
-template <class ForwardIterator>
- void uninitialized_value_construct(ForwardIterator first, ForwardIterator last);
-
-template <class ForwardIterator, class Size>
- ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n);
-
-template <class ForwardIterator>
- void uninitialized_default_construct(ForwardIterator first, ForwardIterator last);
-
-template <class ForwardIterator, class Size>
- ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n);
-
+ 
+template <class InputIterator, class ForwardIterator> 
+ForwardIterator 
+uninitialized_copy(InputIterator first, InputIterator last, ForwardIterator result); 
+ 
+template <class InputIterator, class Size, class ForwardIterator> 
+ForwardIterator 
+uninitialized_copy_n(InputIterator first, Size n, 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 T, class ...Args> 
+constexpr T* construct_at(T* location, Args&& ...args); // since C++20 
+ 
+template <class T> 
+void destroy_at(T* location); // constexpr in C++20 
+ 
+template <class ForwardIterator> 
+void destroy(ForwardIterator first, ForwardIterator last); // constexpr in C++20 
+ 
+template <class ForwardIterator, class Size> 
+ForwardIterator destroy_n(ForwardIterator first, Size n); // constexpr in C++20 
+ 
+template <class InputIterator, class ForwardIterator> 
+ ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result); 
+ 
+template <class InputIterator, class Size, class ForwardIterator> 
+ pair<InputIterator,ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result); 
+ 
+template <class ForwardIterator> 
+ void uninitialized_value_construct(ForwardIterator first, ForwardIterator last); 
+ 
+template <class ForwardIterator, class Size> 
+ ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n); 
+ 
+template <class ForwardIterator> 
+ void uninitialized_default_construct(ForwardIterator first, ForwardIterator last); 
+ 
+template <class ForwardIterator, class Size> 
+ ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n); 
+ 
 template <class Y> struct auto_ptr_ref {};      // deprecated in C++11, removed in C++17
-
-template<class X>
+ 
+template<class X> 
 class auto_ptr                                  // deprecated in C++11, removed in C++17
-{
-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() noexcept = default;
-    template <class U> default_delete(const default_delete<U>&) noexcept;
-
-    void operator()(T*) const noexcept;
-};
-
-template <class T>
-struct default_delete<T[]>
-{
-    constexpr default_delete() noexcept = default;
-    void operator()(T*) const noexcept;
-    template <class U> void operator()(U*) const = delete;
-};
-
-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() noexcept;
-    explicit unique_ptr(pointer p) noexcept;
-    unique_ptr(pointer p, see below d1) noexcept;
-    unique_ptr(pointer p, see below d2) noexcept;
-    unique_ptr(unique_ptr&& u) noexcept;
-    unique_ptr(nullptr_t) noexcept : unique_ptr() { }
-    template <class U, class E>
-        unique_ptr(unique_ptr<U, E>&& u) noexcept;
-    template <class U>
-        unique_ptr(auto_ptr<U>&& u) noexcept;       // removed in C++17
-
-    // destructor
-    ~unique_ptr();
-
-    // assignment
-    unique_ptr& operator=(unique_ptr&& u) noexcept;
-    template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept;
-    unique_ptr& operator=(nullptr_t) noexcept;
-
-    // observers
-    typename add_lvalue_reference<T>::type operator*() const;
-    pointer operator->() const noexcept;
-    pointer get() const noexcept;
-    deleter_type& get_deleter() noexcept;
-    const deleter_type& get_deleter() const noexcept;
-    explicit operator bool() const noexcept;
-
-    // modifiers
-    pointer release() noexcept;
-    void reset(pointer p = pointer()) noexcept;
-    void swap(unique_ptr& u) noexcept;
-};
-
-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() noexcept;
-    explicit unique_ptr(pointer p) noexcept;
-    unique_ptr(pointer p, see below d) noexcept;
-    unique_ptr(pointer p, see below d) noexcept;
-    unique_ptr(unique_ptr&& u) noexcept;
-    unique_ptr(nullptr_t) noexcept : unique_ptr() { }
-
-    // destructor
-    ~unique_ptr();
-
-    // assignment
-    unique_ptr& operator=(unique_ptr&& u) noexcept;
-    unique_ptr& operator=(nullptr_t) noexcept;
-
-    // observers
-    T& operator[](size_t i) const;
-    pointer get() const noexcept;
-    deleter_type& get_deleter() noexcept;
-    const deleter_type& get_deleter() const noexcept;
-    explicit operator bool() const noexcept;
-
-    // modifiers
-    pointer release() noexcept;
-    void reset(pointer p = pointer()) noexcept;
-    void reset(nullptr_t) noexcept;
+{ 
+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() noexcept = default; 
+    template <class U> default_delete(const default_delete<U>&) noexcept; 
+ 
+    void operator()(T*) const noexcept; 
+}; 
+ 
+template <class T> 
+struct default_delete<T[]> 
+{ 
+    constexpr default_delete() noexcept = default; 
+    void operator()(T*) const noexcept; 
+    template <class U> void operator()(U*) const = delete; 
+}; 
+ 
+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() noexcept; 
+    explicit unique_ptr(pointer p) noexcept; 
+    unique_ptr(pointer p, see below d1) noexcept; 
+    unique_ptr(pointer p, see below d2) noexcept; 
+    unique_ptr(unique_ptr&& u) noexcept; 
+    unique_ptr(nullptr_t) noexcept : unique_ptr() { } 
+    template <class U, class E> 
+        unique_ptr(unique_ptr<U, E>&& u) noexcept; 
+    template <class U> 
+        unique_ptr(auto_ptr<U>&& u) noexcept;       // removed in C++17 
+ 
+    // destructor 
+    ~unique_ptr(); 
+ 
+    // assignment 
+    unique_ptr& operator=(unique_ptr&& u) noexcept; 
+    template <class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept; 
+    unique_ptr& operator=(nullptr_t) noexcept; 
+ 
+    // observers 
+    typename add_lvalue_reference<T>::type operator*() const; 
+    pointer operator->() const noexcept; 
+    pointer get() const noexcept; 
+    deleter_type& get_deleter() noexcept; 
+    const deleter_type& get_deleter() const noexcept; 
+    explicit operator bool() const noexcept; 
+ 
+    // modifiers 
+    pointer release() noexcept; 
+    void reset(pointer p = pointer()) noexcept; 
+    void swap(unique_ptr& u) noexcept; 
+}; 
+ 
+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() noexcept; 
+    explicit unique_ptr(pointer p) noexcept; 
+    unique_ptr(pointer p, see below d) noexcept; 
+    unique_ptr(pointer p, see below d) noexcept; 
+    unique_ptr(unique_ptr&& u) noexcept; 
+    unique_ptr(nullptr_t) noexcept : unique_ptr() { } 
+ 
+    // destructor 
+    ~unique_ptr(); 
+ 
+    // assignment 
+    unique_ptr& operator=(unique_ptr&& u) noexcept; 
+    unique_ptr& operator=(nullptr_t) noexcept; 
+ 
+    // observers 
+    T& operator[](size_t i) const; 
+    pointer get() const noexcept; 
+    deleter_type& get_deleter() noexcept; 
+    const deleter_type& get_deleter() const noexcept; 
+    explicit operator bool() const noexcept; 
+ 
+    // modifiers 
+    pointer release() noexcept; 
+    void reset(pointer p = pointer()) noexcept; 
+    void reset(nullptr_t) noexcept; 
   template <class U> void reset(U) = delete;
-    void swap(unique_ptr& u) noexcept;
-};
-
-template <class T, class D>
-    void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept;
-
-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);
-
-template <class T, class D>
-    bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept;
-template <class T, class D>
-    bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept;
-template <class T, class D>
-    bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;
-template <class T, class D>
-    bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept;
-
-template <class T, class D>
-    bool operator<(const unique_ptr<T, D>& x, nullptr_t);
-template <class T, class D>
-    bool operator<(nullptr_t, const unique_ptr<T, D>& y);
-template <class T, class D>
-    bool operator<=(const unique_ptr<T, D>& x, nullptr_t);
-template <class T, class D>
-    bool operator<=(nullptr_t, const unique_ptr<T, D>& y);
-template <class T, class D>
-    bool operator>(const unique_ptr<T, D>& x, nullptr_t);
-template <class T, class D>
-    bool operator>(nullptr_t, const unique_ptr<T, D>& y);
-template <class T, class D>
-    bool operator>=(const unique_ptr<T, D>& x, nullptr_t);
-template <class T, class D>
-    bool operator>=(nullptr_t, const unique_ptr<T, D>& y);
-
-class bad_weak_ptr
-    : public std::exception
-{
-    bad_weak_ptr() noexcept;
-};
-
-template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args);     // C++14
-template<class T>                unique_ptr<T> make_unique(size_t n);           // C++14
-template<class T, class... Args> unspecified   make_unique(Args&&...) = delete; // C++14, T == U[N]
-
-template<class E, class T, class Y, class D>
-    basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, unique_ptr<Y, D> const& p);
-
-template<class T>
-class shared_ptr
-{
-public:
-    typedef T element_type;
-    typedef weak_ptr<T> weak_type; // C++17
-
-    // constructors:
-    constexpr shared_ptr() noexcept;
-    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) noexcept;
-    shared_ptr(const shared_ptr& r) noexcept;
-    template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept;
-    shared_ptr(shared_ptr&& r) noexcept;
-    template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept;
-    template<class Y> explicit shared_ptr(const weak_ptr<Y>& r);
-    template<class Y> shared_ptr(auto_ptr<Y>&& r);          // removed in C++17
-    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) noexcept;
-    template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept;
-    shared_ptr& operator=(shared_ptr&& r) noexcept;
-    template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r);
-    template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17
-    template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r);
-
-    // modifiers:
-    void swap(shared_ptr& r) noexcept;
-    void reset() noexcept;
-    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 noexcept;
-    T& operator*() const noexcept;
-    T* operator->() const noexcept;
-    long use_count() const noexcept;
-    bool unique() const noexcept;
-    explicit operator bool() const noexcept;
-    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
-    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
-};
-
-template<class T>
-shared_ptr(weak_ptr<T>) -> shared_ptr<T>;
-template<class T, class D>
-shared_ptr(unique_ptr<T, D>) -> shared_ptr<T>;
-
-// shared_ptr comparisons:
-template<class T, class U>
-    bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-template<class T, class U>
-    bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-template<class T, class U>
-    bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-template<class T, class U>
-    bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-template<class T, class U>
-    bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-template<class T, class U>
-    bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept;
-
-template <class T>
-    bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-    bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
-template <class T>
-    bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-    bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
-template <class T>
-    bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
-template <class T>
-    bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-    bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
-template <class T>
-    bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-    bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
-template <class T>
-    bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
-template <class T>
-    bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
-
-// shared_ptr specialized algorithms:
-template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept;
-
-// shared_ptr casts:
-template<class T, class U>
-    shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept;
-template<class T, class U>
-    shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept;
-template<class T, class U>
-    shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept;
-
-// 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) noexcept;
-
-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() noexcept;
-    template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept;
-    weak_ptr(weak_ptr const& r) noexcept;
-    template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept;
-    weak_ptr(weak_ptr&& r) noexcept;                      // C++14
-    template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14
-
-    // destructor
-    ~weak_ptr();
-
-    // assignment
-    weak_ptr& operator=(weak_ptr const& r) noexcept;
-    template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept;
-    template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept;
-    weak_ptr& operator=(weak_ptr&& r) noexcept;                      // C++14
-    template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14
-
-    // modifiers
-    void swap(weak_ptr& r) noexcept;
-    void reset() noexcept;
-
-    // observers
-    long use_count() const noexcept;
-    bool expired() const noexcept;
-    shared_ptr<T> lock() const noexcept;
-    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
-    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
-};
-
-template<class T>
-weak_ptr(shared_ptr<T>) -> weak_ptr<T>;
-
-// weak_ptr specialized algorithms:
-template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept;
-
-// class owner_less:
-template<class T> struct owner_less;
-
-template<class T>
+    void swap(unique_ptr& u) noexcept; 
+}; 
+ 
+template <class T, class D> 
+    void swap(unique_ptr<T, D>& x, unique_ptr<T, D>& y) noexcept; 
+ 
+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); 
+ 
+template <class T, class D> 
+    bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 
+template <class T, class D> 
+    bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 
+template <class T, class D> 
+    bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 
+template <class T, class D> 
+    bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 
+ 
+template <class T, class D> 
+    bool operator<(const unique_ptr<T, D>& x, nullptr_t); 
+template <class T, class D> 
+    bool operator<(nullptr_t, const unique_ptr<T, D>& y); 
+template <class T, class D> 
+    bool operator<=(const unique_ptr<T, D>& x, nullptr_t); 
+template <class T, class D> 
+    bool operator<=(nullptr_t, const unique_ptr<T, D>& y); 
+template <class T, class D> 
+    bool operator>(const unique_ptr<T, D>& x, nullptr_t); 
+template <class T, class D> 
+    bool operator>(nullptr_t, const unique_ptr<T, D>& y); 
+template <class T, class D> 
+    bool operator>=(const unique_ptr<T, D>& x, nullptr_t); 
+template <class T, class D> 
+    bool operator>=(nullptr_t, const unique_ptr<T, D>& y); 
+ 
+class bad_weak_ptr 
+    : public std::exception 
+{ 
+    bad_weak_ptr() noexcept; 
+}; 
+ 
+template<class T, class... Args> unique_ptr<T> make_unique(Args&&... args);     // C++14 
+template<class T>                unique_ptr<T> make_unique(size_t n);           // C++14 
+template<class T, class... Args> unspecified   make_unique(Args&&...) = delete; // C++14, T == U[N] 
+ 
+template<class E, class T, class Y, class D> 
+    basic_ostream<E, T>& operator<< (basic_ostream<E, T>& os, unique_ptr<Y, D> const& p); 
+ 
+template<class T> 
+class shared_ptr 
+{ 
+public: 
+    typedef T element_type; 
+    typedef weak_ptr<T> weak_type; // C++17 
+ 
+    // constructors: 
+    constexpr shared_ptr() noexcept; 
+    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) noexcept; 
+    shared_ptr(const shared_ptr& r) noexcept; 
+    template<class Y> shared_ptr(const shared_ptr<Y>& r) noexcept; 
+    shared_ptr(shared_ptr&& r) noexcept; 
+    template<class Y> shared_ptr(shared_ptr<Y>&& r) noexcept; 
+    template<class Y> explicit shared_ptr(const weak_ptr<Y>& r); 
+    template<class Y> shared_ptr(auto_ptr<Y>&& r);          // removed in C++17 
+    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) noexcept; 
+    template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r) noexcept; 
+    shared_ptr& operator=(shared_ptr&& r) noexcept; 
+    template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r); 
+    template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r); // removed in C++17 
+    template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r); 
+ 
+    // modifiers: 
+    void swap(shared_ptr& r) noexcept; 
+    void reset() noexcept; 
+    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 noexcept; 
+    T& operator*() const noexcept; 
+    T* operator->() const noexcept; 
+    long use_count() const noexcept; 
+    bool unique() const noexcept; 
+    explicit operator bool() const noexcept; 
+    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept; 
+    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; 
+}; 
+ 
+template<class T> 
+shared_ptr(weak_ptr<T>) -> shared_ptr<T>; 
+template<class T, class D> 
+shared_ptr(unique_ptr<T, D>) -> shared_ptr<T>; 
+ 
+// shared_ptr comparisons: 
+template<class T, class U> 
+    bool operator==(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+template<class T, class U> 
+    bool operator!=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+template<class T, class U> 
+    bool operator<(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+template<class T, class U> 
+    bool operator>(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+template<class T, class U> 
+    bool operator<=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+template<class T, class U> 
+    bool operator>=(shared_ptr<T> const& a, shared_ptr<U> const& b) noexcept; 
+ 
+template <class T> 
+    bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+    bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept; 
+template <class T> 
+    bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+    bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept; 
+template <class T> 
+    bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept; 
+template <class T> 
+    bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+    bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept; 
+template <class T> 
+    bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+    bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept; 
+template <class T> 
+    bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept; 
+template <class T> 
+    bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept; 
+ 
+// shared_ptr specialized algorithms: 
+template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b) noexcept; 
+ 
+// shared_ptr casts: 
+template<class T, class U> 
+    shared_ptr<T> static_pointer_cast(shared_ptr<U> const& r) noexcept; 
+template<class T, class U> 
+    shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const& r) noexcept; 
+template<class T, class U> 
+    shared_ptr<T> const_pointer_cast(shared_ptr<U> const& r) noexcept; 
+ 
+// 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) noexcept; 
+ 
+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() noexcept; 
+    template<class Y> weak_ptr(shared_ptr<Y> const& r) noexcept; 
+    weak_ptr(weak_ptr const& r) noexcept; 
+    template<class Y> weak_ptr(weak_ptr<Y> const& r) noexcept; 
+    weak_ptr(weak_ptr&& r) noexcept;                      // C++14 
+    template<class Y> weak_ptr(weak_ptr<Y>&& r) noexcept; // C++14 
+ 
+    // destructor 
+    ~weak_ptr(); 
+ 
+    // assignment 
+    weak_ptr& operator=(weak_ptr const& r) noexcept; 
+    template<class Y> weak_ptr& operator=(weak_ptr<Y> const& r) noexcept; 
+    template<class Y> weak_ptr& operator=(shared_ptr<Y> const& r) noexcept; 
+    weak_ptr& operator=(weak_ptr&& r) noexcept;                      // C++14 
+    template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r) noexcept; // C++14 
+ 
+    // modifiers 
+    void swap(weak_ptr& r) noexcept; 
+    void reset() noexcept; 
+ 
+    // observers 
+    long use_count() const noexcept; 
+    bool expired() const noexcept; 
+    shared_ptr<T> lock() const noexcept; 
+    template<class U> bool owner_before(shared_ptr<U> const& b) const noexcept; 
+    template<class U> bool owner_before(weak_ptr<U> const& b) const noexcept; 
+}; 
+ 
+template<class T> 
+weak_ptr(shared_ptr<T>) -> weak_ptr<T>; 
+ 
+// weak_ptr specialized algorithms: 
+template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b) noexcept; 
+ 
+// 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 noexcept;
-    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
-    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
-};
-
-template<class 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 noexcept; 
+    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; 
+    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; 
+}; 
+ 
+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 noexcept;
-    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
-    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
-};
-
-template <>  // Added in C++14
-struct owner_less<void>
-{
-    template <class _Tp, class _Up>
-    bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
-    template <class _Tp, class _Up>
-    bool operator()( shared_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept;
-    template <class _Tp, class _Up>
-    bool operator()(   weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept;
-    template <class _Tp, class _Up>
-    bool operator()(   weak_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept;
-
-    typedef void is_transparent;
-};
-
-template<class T>
-class enable_shared_from_this
-{
-protected:
-    constexpr enable_shared_from_this() noexcept;
-    enable_shared_from_this(enable_shared_from_this const&) noexcept;
-    enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept;
-    ~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> >;
-
-template <class T, class Alloc>
-  inline constexpr bool uses_allocator_v = uses_allocator<T, Alloc>::value;
-
-// Pointer safety
-enum class pointer_safety { relaxed, preferred, strict }; // since C++11
-void declare_reachable(void *p);                          // since C++11
-template <class T> T *undeclare_reachable(T *p);          // since C++11
-void declare_no_pointers(char *p, size_t n);              // since C++11
-void undeclare_no_pointers(char *p, size_t n);            // since C++11
-pointer_safety get_pointer_safety() noexcept;             // since C++11
-
-void* align(size_t alignment, size_t size, void*& ptr, size_t& space);
-
-}  // std
-
-*/
-
-#include <__config>
-#include <__functional_base>
-#include <__memory/addressof.h>
-#include <__memory/allocation_guard.h>
-#include <__memory/allocator.h>
-#include <__memory/allocator_arg_t.h>
-#include <__memory/allocator_traits.h>
-#include <__memory/compressed_pair.h>
-#include <__memory/construct_at.h>
-#include <__memory/pointer_safety.h>
-#include <__memory/pointer_traits.h>
-#include <__memory/raw_storage_iterator.h>
-#include <__memory/shared_ptr.h>
-#include <__memory/temporary_buffer.h>
-#include <__memory/uninitialized_algorithms.h>
-#include <__memory/unique_ptr.h>
-#include <__memory/uses_allocator.h>
-#include <compare>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <iosfwd>
-#include <iterator>
-#include <new>
-#include <stdexcept>
-#include <stlfwd>
-#include <tuple>
-#include <type_traits>
-#include <typeinfo>
-#include <utility>
+    : binary_function<weak_ptr<T>, weak_ptr<T>, bool> 
+{ 
+    typedef bool result_type; 
+    bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const noexcept; 
+    bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept; 
+    bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept; 
+}; 
+ 
+template <>  // Added in C++14 
+struct owner_less<void> 
+{ 
+    template <class _Tp, class _Up> 
+    bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; 
+    template <class _Tp, class _Up> 
+    bool operator()( shared_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept; 
+    template <class _Tp, class _Up> 
+    bool operator()(   weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const noexcept; 
+    template <class _Tp, class _Up> 
+    bool operator()(   weak_ptr<_Tp> const& __x,   weak_ptr<_Up> const& __y) const noexcept; 
+ 
+    typedef void is_transparent; 
+}; 
+ 
+template<class T> 
+class enable_shared_from_this 
+{ 
+protected: 
+    constexpr enable_shared_from_this() noexcept; 
+    enable_shared_from_this(enable_shared_from_this const&) noexcept; 
+    enable_shared_from_this& operator=(enable_shared_from_this const&) noexcept; 
+    ~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> >; 
+ 
+template <class T, class Alloc> 
+  inline constexpr bool uses_allocator_v = uses_allocator<T, Alloc>::value; 
+ 
+// Pointer safety 
+enum class pointer_safety { relaxed, preferred, strict }; // since C++11 
+void declare_reachable(void *p);                          // since C++11 
+template <class T> T *undeclare_reachable(T *p);          // since C++11 
+void declare_no_pointers(char *p, size_t n);              // since C++11 
+void undeclare_no_pointers(char *p, size_t n);            // since C++11 
+pointer_safety get_pointer_safety() noexcept;             // since C++11 
+ 
+void* align(size_t alignment, size_t size, void*& ptr, size_t& space); 
+ 
+}  // std 
+ 
+*/ 
+ 
+#include <__config> 
+#include <__functional_base> 
+#include <__memory/addressof.h> 
+#include <__memory/allocation_guard.h> 
+#include <__memory/allocator.h> 
+#include <__memory/allocator_arg_t.h> 
+#include <__memory/allocator_traits.h> 
+#include <__memory/compressed_pair.h> 
+#include <__memory/construct_at.h> 
+#include <__memory/pointer_safety.h> 
+#include <__memory/pointer_traits.h> 
+#include <__memory/raw_storage_iterator.h> 
+#include <__memory/shared_ptr.h> 
+#include <__memory/temporary_buffer.h> 
+#include <__memory/uninitialized_algorithms.h> 
+#include <__memory/unique_ptr.h> 
+#include <__memory/uses_allocator.h> 
+#include <compare> 
+#include <cstddef> 
+#include <cstdint> 
+#include <cstring> 
+#include <iosfwd> 
+#include <iterator> 
+#include <new> 
+#include <stdexcept> 
+#include <stlfwd> 
+#include <tuple> 
+#include <type_traits> 
+#include <typeinfo> 
+#include <utility> 
 #include <version>
-
-#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
-#   include <__memory/auto_ptr.h>
-#endif
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Alloc, class _Ptr>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_forward_with_exception_guarantees(_Alloc& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) {
-    static_assert(__is_cpp17_move_insertable<_Alloc>::value,
-        "The specified type does not meet the requirements of Cpp17MoveInsertable");
-    typedef allocator_traits<_Alloc> _Traits;
-    for (; __begin1 != __end1; ++__begin1, (void)++__begin2) {
-        _Traits::construct(__a, _VSTD::__to_address(__begin2),
-#ifdef _LIBCPP_NO_EXCEPTIONS
-            _VSTD::move(*__begin1)
-#else
-            _VSTD::move_if_noexcept(*__begin1)
-#endif
-        );
-    }
-}
-
-template <class _Alloc, class _Tp, typename enable_if<
-    (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Tp*, _Tp>::value) &&
-    is_trivially_move_constructible<_Tp>::value
->::type>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_forward_with_exception_guarantees(_Alloc&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) {
-    ptrdiff_t _Np = __end1 - __begin1;
-    if (_Np > 0) {
-        _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp));
-        __begin2 += _Np;
-    }
-}
-
-template <class _Alloc, class _Iter, class _Ptr>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_range_forward(_Alloc& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) {
-    typedef allocator_traits<_Alloc> _Traits;
-    for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) {
-        _Traits::construct(__a, _VSTD::__to_address(__begin2), *__begin1);
-    }
-}
-
-template <class _Alloc, class _Source, class _Dest,
-          class _RawSource = typename remove_const<_Source>::type,
-          class _RawDest = typename remove_const<_Dest>::type,
-          class =
-    typename enable_if<
-        is_trivially_copy_constructible<_Dest>::value &&
-        is_same<_RawSource, _RawDest>::value &&
-        (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Dest*, _Source&>::value)
-    >::type>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_range_forward(_Alloc&, _Source* __begin1, _Source* __end1, _Dest*& __begin2) {
-    ptrdiff_t _Np = __end1 - __begin1;
-    if (_Np > 0) {
-        _VSTD::memcpy(const_cast<_RawDest*>(__begin2), __begin1, _Np * sizeof(_Dest));
-        __begin2 += _Np;
-    }
-}
-
-template <class _Alloc, class _Ptr>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_backward_with_exception_guarantees(_Alloc& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) {
-    static_assert(__is_cpp17_move_insertable<_Alloc>::value,
-        "The specified type does not meet the requirements of Cpp17MoveInsertable");
-    typedef allocator_traits<_Alloc> _Traits;
-    while (__end1 != __begin1) {
-        _Traits::construct(__a, _VSTD::__to_address(__end2 - 1),
-#ifdef _LIBCPP_NO_EXCEPTIONS
-            _VSTD::move(*--__end1)
-#else
-            _VSTD::move_if_noexcept(*--__end1)
-#endif
-        );
-        --__end2;
-    }
-}
-
-template <class _Alloc, class _Tp, class = typename enable_if<
-    (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Tp*, _Tp>::value) &&
-    is_trivially_move_constructible<_Tp>::value
->::type>
-_LIBCPP_INLINE_VISIBILITY
-void __construct_backward_with_exception_guarantees(_Alloc&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) {
-    ptrdiff_t _Np = __end1 - __begin1;
-    __end2 -= _Np;
-    if (_Np > 0)
-        _VSTD::memcpy(static_cast<void*>(__end2), static_cast<void const*>(__begin1), _Np * sizeof(_Tp));
-}
-
-struct __destruct_n
-{
-private:
-    size_t __size_;
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
-        {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
-        {}
-
-    _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
-        {++__size_;}
-    _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
-        {}
-
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
-        {__size_ = __s;}
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
-        {}
-public:
-    _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
-        : __size_(__s) {}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __incr() _NOEXCEPT
-        {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
-        {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
-        {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-};
-
-_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
-
-// --- Helper for container swap --
-template <typename _Alloc>
-_LIBCPP_INLINE_VISIBILITY
-void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type)
-#if _LIBCPP_STD_VER >= 14
-    _NOEXCEPT
-#else
-    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
-#endif
-{
-    using _VSTD::swap;
-    swap(__a1, __a2);
-}
-
-template <typename _Alloc>
-inline _LIBCPP_INLINE_VISIBILITY
-void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {}
-
-template <typename _Alloc>
-inline _LIBCPP_INLINE_VISIBILITY
-void __swap_allocator(_Alloc & __a1, _Alloc & __a2)
-#if _LIBCPP_STD_VER >= 14
-    _NOEXCEPT
-#else
-    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value)
-#endif
-{
-    _VSTD::__swap_allocator(__a1, __a2,
-      integral_constant<bool, allocator_traits<_Alloc>::propagate_on_container_swap::value>());
-}
-
-template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
-struct __noexcept_move_assign_container : public integral_constant<bool,
-    _Traits::propagate_on_container_move_assignment::value
-#if _LIBCPP_STD_VER > 14
-        || _Traits::is_always_equal::value
-#else
-        && is_nothrow_move_assignable<_Alloc>::value
-#endif
-    > {};
-
-
-template <class _Tp, class _Alloc>
-struct __temp_value {
-    typedef allocator_traits<_Alloc> _Traits;
-
+ 
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR) 
+#   include <__memory/auto_ptr.h> 
+#endif 
+ 
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 
+#pragma GCC system_header 
+#endif 
+ 
+_LIBCPP_BEGIN_NAMESPACE_STD 
+ 
+template <class _Alloc, class _Ptr> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_forward_with_exception_guarantees(_Alloc& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) { 
+    static_assert(__is_cpp17_move_insertable<_Alloc>::value, 
+        "The specified type does not meet the requirements of Cpp17MoveInsertable"); 
+    typedef allocator_traits<_Alloc> _Traits; 
+    for (; __begin1 != __end1; ++__begin1, (void)++__begin2) { 
+        _Traits::construct(__a, _VSTD::__to_address(__begin2), 
+#ifdef _LIBCPP_NO_EXCEPTIONS 
+            _VSTD::move(*__begin1) 
+#else 
+            _VSTD::move_if_noexcept(*__begin1) 
+#endif 
+        ); 
+    } 
+} 
+ 
+template <class _Alloc, class _Tp, typename enable_if< 
+    (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Tp*, _Tp>::value) && 
+    is_trivially_move_constructible<_Tp>::value 
+>::type> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_forward_with_exception_guarantees(_Alloc&, _Tp* __begin1, _Tp* __end1, _Tp*& __begin2) { 
+    ptrdiff_t _Np = __end1 - __begin1; 
+    if (_Np > 0) { 
+        _VSTD::memcpy(__begin2, __begin1, _Np * sizeof(_Tp)); 
+        __begin2 += _Np; 
+    } 
+} 
+ 
+template <class _Alloc, class _Iter, class _Ptr> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_range_forward(_Alloc& __a, _Iter __begin1, _Iter __end1, _Ptr& __begin2) { 
+    typedef allocator_traits<_Alloc> _Traits; 
+    for (; __begin1 != __end1; ++__begin1, (void) ++__begin2) { 
+        _Traits::construct(__a, _VSTD::__to_address(__begin2), *__begin1); 
+    } 
+} 
+ 
+template <class _Alloc, class _Source, class _Dest, 
+          class _RawSource = typename remove_const<_Source>::type, 
+          class _RawDest = typename remove_const<_Dest>::type, 
+          class = 
+    typename enable_if< 
+        is_trivially_copy_constructible<_Dest>::value && 
+        is_same<_RawSource, _RawDest>::value && 
+        (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Dest*, _Source&>::value) 
+    >::type> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_range_forward(_Alloc&, _Source* __begin1, _Source* __end1, _Dest*& __begin2) { 
+    ptrdiff_t _Np = __end1 - __begin1; 
+    if (_Np > 0) { 
+        _VSTD::memcpy(const_cast<_RawDest*>(__begin2), __begin1, _Np * sizeof(_Dest)); 
+        __begin2 += _Np; 
+    } 
+} 
+ 
+template <class _Alloc, class _Ptr> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_backward_with_exception_guarantees(_Alloc& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __end2) { 
+    static_assert(__is_cpp17_move_insertable<_Alloc>::value, 
+        "The specified type does not meet the requirements of Cpp17MoveInsertable"); 
+    typedef allocator_traits<_Alloc> _Traits; 
+    while (__end1 != __begin1) { 
+        _Traits::construct(__a, _VSTD::__to_address(__end2 - 1), 
+#ifdef _LIBCPP_NO_EXCEPTIONS 
+            _VSTD::move(*--__end1) 
+#else 
+            _VSTD::move_if_noexcept(*--__end1) 
+#endif 
+        ); 
+        --__end2; 
+    } 
+} 
+ 
+template <class _Alloc, class _Tp, class = typename enable_if< 
+    (__is_default_allocator<_Alloc>::value || !__has_construct<_Alloc, _Tp*, _Tp>::value) && 
+    is_trivially_move_constructible<_Tp>::value 
+>::type> 
+_LIBCPP_INLINE_VISIBILITY 
+void __construct_backward_with_exception_guarantees(_Alloc&, _Tp* __begin1, _Tp* __end1, _Tp*& __end2) { 
+    ptrdiff_t _Np = __end1 - __begin1; 
+    __end2 -= _Np; 
+    if (_Np > 0) 
+        _VSTD::memcpy(static_cast<void*>(__end2), static_cast<void const*>(__begin1), _Np * sizeof(_Tp)); 
+} 
+ 
+struct __destruct_n 
+{ 
+private: 
+    size_t __size_; 
+ 
+    template <class _Tp> 
+    _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT 
+        {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();} 
+ 
+    template <class _Tp> 
+    _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT 
+        {} 
+ 
+    _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT 
+        {++__size_;} 
+    _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT 
+        {} 
+ 
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT 
+        {__size_ = __s;} 
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT 
+        {} 
+public: 
+    _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT 
+        : __size_(__s) {} 
+ 
+    template <class _Tp> 
+    _LIBCPP_INLINE_VISIBILITY void __incr() _NOEXCEPT 
+        {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 
+ 
+    template <class _Tp> 
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT 
+        {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 
+ 
+    template <class _Tp> 
+    _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT 
+        {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());} 
+}; 
+ 
+_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space); 
+ 
+// --- Helper for container swap -- 
+template <typename _Alloc> 
+_LIBCPP_INLINE_VISIBILITY 
+void __swap_allocator(_Alloc & __a1, _Alloc & __a2, true_type) 
+#if _LIBCPP_STD_VER >= 14 
+    _NOEXCEPT 
+#else 
+    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 
+#endif 
+{ 
+    using _VSTD::swap; 
+    swap(__a1, __a2); 
+} 
+ 
+template <typename _Alloc> 
+inline _LIBCPP_INLINE_VISIBILITY 
+void __swap_allocator(_Alloc &, _Alloc &, false_type) _NOEXCEPT {} 
+ 
+template <typename _Alloc> 
+inline _LIBCPP_INLINE_VISIBILITY 
+void __swap_allocator(_Alloc & __a1, _Alloc & __a2) 
+#if _LIBCPP_STD_VER >= 14 
+    _NOEXCEPT 
+#else 
+    _NOEXCEPT_(__is_nothrow_swappable<_Alloc>::value) 
+#endif 
+{ 
+    _VSTD::__swap_allocator(__a1, __a2, 
+      integral_constant<bool, allocator_traits<_Alloc>::propagate_on_container_swap::value>()); 
+} 
+ 
+template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> > 
+struct __noexcept_move_assign_container : public integral_constant<bool, 
+    _Traits::propagate_on_container_move_assignment::value 
+#if _LIBCPP_STD_VER > 14 
+        || _Traits::is_always_equal::value 
+#else 
+        && is_nothrow_move_assignable<_Alloc>::value 
+#endif 
+    > {}; 
+ 
+ 
+template <class _Tp, class _Alloc> 
+struct __temp_value { 
+    typedef allocator_traits<_Alloc> _Traits; 
+ 
     typename aligned_storage<sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)>::type __v;
-    _Alloc &__a;
-
-    _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); }
-    _Tp &   get() { return *__addr(); }
-
-    template<class... _Args>
+    _Alloc &__a; 
+ 
+    _Tp *__addr() { return reinterpret_cast<_Tp *>(addressof(__v)); } 
+    _Tp &   get() { return *__addr(); } 
+ 
+    template<class... _Args> 
     _LIBCPP_NO_CFI
     __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) {
       _Traits::construct(__a, reinterpret_cast<_Tp*>(addressof(__v)),
                          _VSTD::forward<_Args>(__args)...);
     }
-
-    ~__temp_value() { _Traits::destroy(__a, __addr()); }
-    };
-
-template<typename _Alloc, typename = void, typename = void>
-struct __is_allocator : false_type {};
-
-template<typename _Alloc>
-struct __is_allocator<_Alloc,
-       typename __void_t<typename _Alloc::value_type>::type,
-       typename __void_t<decltype(declval<_Alloc&>().allocate(size_t(0)))>::type
-     >
-   : true_type {};
-
-// __builtin_new_allocator -- A non-templated helper for allocating and
-// deallocating memory using __builtin_operator_new and
-// __builtin_operator_delete. It should be used in preference to
-// `std::allocator<T>` to avoid additional instantiations.
-struct __builtin_new_allocator {
-  struct __builtin_new_deleter {
-    typedef void* pointer_type;
-
-    _LIBCPP_CONSTEXPR explicit __builtin_new_deleter(size_t __size, size_t __align)
-        : __size_(__size), __align_(__align) {}
-
-    void operator()(void* p) const _NOEXCEPT {
-        _VSTD::__libcpp_deallocate(p, __size_, __align_);
-    }
-
-   private:
-    size_t __size_;
-    size_t __align_;
-  };
-
-  typedef unique_ptr<void, __builtin_new_deleter> __holder_t;
-
-  static __holder_t __allocate_bytes(size_t __s, size_t __align) {
-      return __holder_t(_VSTD::__libcpp_allocate(__s, __align),
-                     __builtin_new_deleter(__s, __align));
-  }
-
-  static void __deallocate_bytes(void* __p, size_t __s,
-                                 size_t __align) _NOEXCEPT {
-      _VSTD::__libcpp_deallocate(__p, __s, __align);
-  }
-
-  template <class _Tp>
-  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
-  static __holder_t __allocate_type(size_t __n) {
-      return __allocate_bytes(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
-  }
-
-  template <class _Tp>
-  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
-  static void __deallocate_type(void* __p, size_t __n) _NOEXCEPT {
-      __deallocate_bytes(__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
-  }
-};
-
-
-_LIBCPP_END_NAMESPACE_STD
-
-#if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17
-//#   include <__pstl_memory>
-#endif
-
-#endif // _LIBCPP_MEMORY
+ 
+    ~__temp_value() { _Traits::destroy(__a, __addr()); } 
+    }; 
+ 
+template<typename _Alloc, typename = void, typename = void> 
+struct __is_allocator : false_type {}; 
+ 
+template<typename _Alloc> 
+struct __is_allocator<_Alloc, 
+       typename __void_t<typename _Alloc::value_type>::type, 
+       typename __void_t<decltype(declval<_Alloc&>().allocate(size_t(0)))>::type 
+     > 
+   : true_type {}; 
+ 
+// __builtin_new_allocator -- A non-templated helper for allocating and 
+// deallocating memory using __builtin_operator_new and 
+// __builtin_operator_delete. It should be used in preference to 
+// `std::allocator<T>` to avoid additional instantiations. 
+struct __builtin_new_allocator { 
+  struct __builtin_new_deleter { 
+    typedef void* pointer_type; 
+ 
+    _LIBCPP_CONSTEXPR explicit __builtin_new_deleter(size_t __size, size_t __align) 
+        : __size_(__size), __align_(__align) {} 
+ 
+    void operator()(void* p) const _NOEXCEPT { 
+        _VSTD::__libcpp_deallocate(p, __size_, __align_); 
+    } 
+ 
+   private: 
+    size_t __size_; 
+    size_t __align_; 
+  }; 
+ 
+  typedef unique_ptr<void, __builtin_new_deleter> __holder_t; 
+ 
+  static __holder_t __allocate_bytes(size_t __s, size_t __align) { 
+      return __holder_t(_VSTD::__libcpp_allocate(__s, __align), 
+                     __builtin_new_deleter(__s, __align)); 
+  } 
+ 
+  static void __deallocate_bytes(void* __p, size_t __s, 
+                                 size_t __align) _NOEXCEPT { 
+      _VSTD::__libcpp_deallocate(__p, __s, __align); 
+  } 
+ 
+  template <class _Tp> 
+  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE 
+  static __holder_t __allocate_type(size_t __n) { 
+      return __allocate_bytes(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)); 
+  } 
+ 
+  template <class _Tp> 
+  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE 
+  static void __deallocate_type(void* __p, size_t __n) _NOEXCEPT { 
+      __deallocate_bytes(__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)); 
+  } 
+}; 
+ 
+ 
+_LIBCPP_END_NAMESPACE_STD 
+ 
+#if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17 
+//#   include <__pstl_memory> 
+#endif 
+ 
+#endif // _LIBCPP_MEMORY