Restoring authorship annotation for Andrey Khalyavin <halyavin@gmail.com>. Commit 2 of 2.

1 files changed, 417 insertions, 417 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/array b/contrib/libs/cxxsupp/libcxx/include/array
index f5ba655955..0ddfc955af 100644
--- a/contrib/libs/cxxsupp/libcxx/include/array
+++ b/contrib/libs/cxxsupp/libcxx/include/array
@@ -1,520 +1,520 @@
-// -*- C++ -*- 
-//===---------------------------- array -----------------------------------===// 
-// 
+// -*- C++ -*-
+//===---------------------------- array -----------------------------------===//
+//
 // 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_ARRAY 
-#define _LIBCPP_ARRAY 
- 
-/* 
-    array synopsis 
- 
-namespace std 
-{ 
-template <class T, size_t N > 
-struct array 
-{ 
-    // types: 
-    typedef T & reference; 
-    typedef const T & const_reference; 
-    typedef implementation defined iterator; 
-    typedef implementation defined const_iterator; 
-    typedef size_t size_type; 
-    typedef ptrdiff_t difference_type; 
-    typedef T value_type; 
-    typedef T* pointer; 
-    typedef const T* const_pointer; 
-    typedef std::reverse_iterator<iterator> reverse_iterator; 
-    typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 
- 
-    // No explicit construct/copy/destroy for aggregate type 
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_ARRAY
+#define _LIBCPP_ARRAY
+
+/*
+    array synopsis
+
+namespace std
+{
+template <class T, size_t N >
+struct array
+{
+    // types:
+    typedef T & reference;
+    typedef const T & const_reference;
+    typedef implementation defined iterator;
+    typedef implementation defined const_iterator;
+    typedef size_t size_type;
+    typedef ptrdiff_t difference_type;
+    typedef T value_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef std::reverse_iterator<iterator> reverse_iterator;
+    typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+    // No explicit construct/copy/destroy for aggregate type
     void fill(const T& u);                                      // constexpr in C++20
     void swap(array& a) noexcept(is_nothrow_swappable_v<T>);    // constexpr in C++20
- 
-    // iterators: 
+
+    // iterators:
     iterator begin() noexcept;                                  // constexpr in C++17
     const_iterator begin() const noexcept;                      // constexpr in C++17
     iterator end() noexcept;                                    // constexpr in C++17
     const_iterator end() const noexcept;                        // constexpr in C++17
- 
+
     reverse_iterator rbegin() noexcept;                         // constexpr in C++17
     const_reverse_iterator rbegin() const noexcept;             // constexpr in C++17
     reverse_iterator rend() noexcept;                           // constexpr in C++17
     const_reverse_iterator rend() const noexcept;               // constexpr in C++17
- 
+
     const_iterator cbegin() const noexcept;                     // constexpr in C++17
     const_iterator cend() const noexcept;                       // constexpr in C++17
     const_reverse_iterator crbegin() const noexcept;            // constexpr in C++17
     const_reverse_iterator crend() const noexcept;              // constexpr in C++17
- 
-    // capacity: 
-    constexpr size_type size() const noexcept; 
-    constexpr size_type max_size() const noexcept; 
-    constexpr bool empty() const noexcept; 
- 
-    // element access: 
+
+    // capacity:
+    constexpr size_type size() const noexcept;
+    constexpr size_type max_size() const noexcept;
+    constexpr bool empty() const noexcept;
+
+    // element access:
     reference operator[](size_type n);                          // constexpr in C++17
     const_reference operator[](size_type n) const;              // constexpr in C++14
     reference at(size_type n);                                  // constexpr in C++17
     const_reference at(size_type n) const;                      // constexpr in C++14
- 
+
     reference front();                                          // constexpr in C++17
     const_reference front() const;                              // constexpr in C++14
     reference back();                                           // constexpr in C++17
     const_reference back() const;                               // constexpr in C++14
- 
+
     T* data() noexcept;                                         // constexpr in C++17
     const T* data() const noexcept;                             // constexpr in C++17
-}; 
- 
+};
+
 template <class T, class... U>
   array(T, U...) -> array<T, 1 + sizeof...(U)>;                 // C++17
- 
-template <class T, size_t N> 
+
+template <class T, size_t N>
   bool operator==(const array<T,N>& x, const array<T,N>& y);    // constexpr in C++20
-template <class T, size_t N> 
+template <class T, size_t N>
   bool operator!=(const array<T,N>& x, const array<T,N>& y);    // constexpr in C++20
-template <class T, size_t N> 
+template <class T, size_t N>
   bool operator<(const array<T,N>& x, const array<T,N>& y);     // constexpr in C++20
-template <class T, size_t N> 
+template <class T, size_t N>
   bool operator>(const array<T,N>& x, const array<T,N>& y);     // constexpr in C++20
-template <class T, size_t N> 
+template <class T, size_t N>
   bool operator<=(const array<T,N>& x, const array<T,N>& y);    // constexpr in C++20
-template <class T, size_t N> 
+template <class T, size_t N>
   bool operator>=(const array<T,N>& x, const array<T,N>& y);    // constexpr in C++20
- 
-template <class T, size_t N > 
+
+template <class T, size_t N >
   void swap(array<T,N>& x, array<T,N>& y) noexcept(noexcept(x.swap(y))); // constexpr in C++20
- 
+
 template <class T, size_t N>
   constexpr array<remove_cv_t<T>, N> to_array(T (&a)[N]);  // C++20
 template <class T, size_t N>
   constexpr array<remove_cv_t<T>, N> to_array(T (&&a)[N]); // C++20
 
 template <class T> struct tuple_size;
-template <size_t I, class T> struct tuple_element; 
-template <class T, size_t N> struct tuple_size<array<T, N>>; 
-template <size_t I, class T, size_t N> struct tuple_element<I, array<T, N>>; 
+template <size_t I, class T> struct tuple_element;
+template <class T, size_t N> struct tuple_size<array<T, N>>;
+template <size_t I, class T, size_t N> struct tuple_element<I, array<T, N>>;
 template <size_t I, class T, size_t N> T& get(array<T, N>&) noexcept;               // constexpr in C++14
 template <size_t I, class T, size_t N> const T& get(const array<T, N>&) noexcept;   // constexpr in C++14
 template <size_t I, class T, size_t N> T&& get(array<T, N>&&) noexcept;             // constexpr in C++14
-template <size_t I, class T, size_t N> const T&& get(const array<T, N>&&) noexcept; // constexpr in C++14 
- 
-}  // std 
- 
-*/ 
- 
-#include <__config> 
-#include <__debug> 
-#include <__tuple> 
-#include <algorithm> 
-#include <cstdlib> // for _LIBCPP_UNREACHABLE 
-#include <iterator> 
-#include <stdexcept> 
-#include <type_traits> 
-#include <utility> 
+template <size_t I, class T, size_t N> const T&& get(const array<T, N>&&) noexcept; // constexpr in C++14
+
+}  // std
+
+*/
+
+#include <__config>
+#include <__debug>
+#include <__tuple>
+#include <algorithm>
+#include <cstdlib> // for _LIBCPP_UNREACHABLE
+#include <iterator>
+#include <stdexcept>
+#include <type_traits>
+#include <utility>
 #include <version>
- 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 
-#pragma GCC system_header 
-#endif 
- 
-_LIBCPP_BEGIN_NAMESPACE_STD 
- 
-template <class _Tp, size_t _Size> 
-struct _LIBCPP_TEMPLATE_VIS array 
-{ 
-    // types: 
-    typedef array __self; 
-    typedef _Tp                                   value_type; 
-    typedef value_type&                           reference; 
-    typedef const value_type&                     const_reference; 
-    typedef value_type*                           iterator; 
-    typedef const value_type*                     const_iterator; 
-    typedef value_type*                           pointer; 
-    typedef const value_type*                     const_pointer; 
-    typedef size_t                                size_type; 
-    typedef ptrdiff_t                             difference_type; 
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, size_t _Size>
+struct _LIBCPP_TEMPLATE_VIS array
+{
+    // types:
+    typedef array __self;
+    typedef _Tp                                   value_type;
+    typedef value_type&                           reference;
+    typedef const value_type&                     const_reference;
+    typedef value_type*                           iterator;
+    typedef const value_type*                     const_iterator;
+    typedef value_type*                           pointer;
+    typedef const value_type*                     const_pointer;
+    typedef size_t                                size_type;
+    typedef ptrdiff_t                             difference_type;
     typedef _VSTD::reverse_iterator<iterator>       reverse_iterator;
     typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
- 
-    _Tp __elems_[_Size]; 
- 
-    // No explicit construct/copy/destroy for aggregate type 
+
+    _Tp __elems_[_Size];
+
+    // No explicit construct/copy/destroy for aggregate type
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
     void fill(const value_type& __u) {
         _VSTD::fill_n(data(), _Size, __u);
-    } 
- 
+    }
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
-    void swap(array& __a) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) { 
+    void swap(array& __a) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value) {
         _VSTD::swap_ranges(data(), data() + _Size, __a.data());
-    } 
- 
-    // iterators: 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    iterator begin() _NOEXCEPT {return iterator(data());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_iterator begin() const _NOEXCEPT {return const_iterator(data());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    iterator end() _NOEXCEPT {return iterator(data() + _Size);} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_iterator end() const _NOEXCEPT {return const_iterator(data() + _Size);} 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());} 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_iterator cbegin() const _NOEXCEPT {return begin();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_iterator cend() const _NOEXCEPT {return end();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const_reverse_iterator crend() const _NOEXCEPT {return rend();} 
- 
-    // capacity: 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return _Size;} 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return _Size;} 
-    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 
+    }
+
+    // iterators:
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    iterator begin() _NOEXCEPT {return iterator(data());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator begin() const _NOEXCEPT {return const_iterator(data());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    iterator end() _NOEXCEPT {return iterator(data() + _Size);}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator end() const _NOEXCEPT {return const_iterator(data() + _Size);}
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());}
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator cbegin() const _NOEXCEPT {return begin();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator cend() const _NOEXCEPT {return end();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator crend() const _NOEXCEPT {return rend();}
+
+    // capacity:
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return _Size;}
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return _Size;}
+    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
     _LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return _Size == 0;}
- 
-    // element access: 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
+
+    // element access:
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
     reference operator[](size_type __n) _NOEXCEPT {
         _LIBCPP_ASSERT(__n < _Size, "out-of-bounds access in std::array<T, N>");
         return __elems_[__n];
     }
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
     const_reference operator[](size_type __n) const _NOEXCEPT {
         _LIBCPP_ASSERT(__n < _Size, "out-of-bounds access in std::array<T, N>");
         return __elems_[__n];
     }
- 
+
     _LIBCPP_CONSTEXPR_AFTER_CXX14 reference at(size_type __n)
     {
         if (__n >= _Size)
             __throw_out_of_range("array::at");
         return __elems_[__n];
     }
- 
+
     _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference at(size_type __n) const
     {
         if (__n >= _Size)
             __throw_out_of_range("array::at");
         return __elems_[__n];
     }
- 
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 reference front()             _NOEXCEPT {return (*this)[0];}
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference front() const _NOEXCEPT {return (*this)[0];}
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 reference back()              _NOEXCEPT {return (*this)[_Size - 1];}
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 const_reference back() const  _NOEXCEPT {return (*this)[_Size - 1];}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    value_type* data() _NOEXCEPT {return __elems_;} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 
-    const value_type* data() const _NOEXCEPT {return __elems_;} 
-}; 
- 
-template <class _Tp> 
-struct _LIBCPP_TEMPLATE_VIS array<_Tp, 0> 
-{ 
-    // types: 
-    typedef array __self; 
-    typedef _Tp                                   value_type; 
-    typedef value_type&                           reference; 
-    typedef const value_type&                     const_reference; 
-    typedef value_type*                           iterator; 
-    typedef const value_type*                     const_iterator; 
-    typedef value_type*                           pointer; 
-    typedef const value_type*                     const_pointer; 
-    typedef size_t                                size_type; 
-    typedef ptrdiff_t                             difference_type; 
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    value_type* data() _NOEXCEPT {return __elems_;}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const value_type* data() const _NOEXCEPT {return __elems_;}
+};
+
+template <class _Tp>
+struct _LIBCPP_TEMPLATE_VIS array<_Tp, 0>
+{
+    // types:
+    typedef array __self;
+    typedef _Tp                                   value_type;
+    typedef value_type&                           reference;
+    typedef const value_type&                     const_reference;
+    typedef value_type*                           iterator;
+    typedef const value_type*                     const_iterator;
+    typedef value_type*                           pointer;
+    typedef const value_type*                     const_pointer;
+    typedef size_t                                size_type;
+    typedef ptrdiff_t                             difference_type;
     typedef _VSTD::reverse_iterator<iterator>       reverse_iterator;
     typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
- 
-    typedef typename conditional<is_const<_Tp>::value, const char, 
-                                char>::type _CharType; 
- 
-    struct  _ArrayInStructT { _Tp __data_[1]; }; 
-    _ALIGNAS_TYPE(_ArrayInStructT) _CharType __elems_[sizeof(_ArrayInStructT)]; 
- 
+
+    typedef typename conditional<is_const<_Tp>::value, const char,
+                                char>::type _CharType;
+
+    struct  _ArrayInStructT { _Tp __data_[1]; };
+    _ALIGNAS_TYPE(_ArrayInStructT) _CharType __elems_[sizeof(_ArrayInStructT)];
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
     value_type* data() _NOEXCEPT {return nullptr;}
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
     const value_type* data() const _NOEXCEPT {return nullptr;}
 
-    // No explicit construct/copy/destroy for aggregate type 
+    // No explicit construct/copy/destroy for aggregate type
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
     void fill(const value_type&) {
-      static_assert(!is_const<_Tp>::value, 
-                    "cannot fill zero-sized array of type 'const T'"); 
-    } 
- 
+      static_assert(!is_const<_Tp>::value,
+                    "cannot fill zero-sized array of type 'const T'");
+    }
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
-    void swap(array&) _NOEXCEPT { 
-      static_assert(!is_const<_Tp>::value, 
-                    "cannot swap zero-sized array of type 'const T'"); 
-    } 
- 
-    // iterators: 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    iterator begin() _NOEXCEPT {return iterator(data());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_iterator begin() const _NOEXCEPT {return const_iterator(data());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    iterator end() _NOEXCEPT {return iterator(data());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_iterator end() const _NOEXCEPT {return const_iterator(data());} 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());} 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_iterator cbegin() const _NOEXCEPT {return begin();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_iterator cend() const _NOEXCEPT {return end();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();} 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    const_reverse_iterator crend() const _NOEXCEPT {return rend();} 
- 
-    // capacity: 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return 0; } 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return 0;} 
-    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return true;} 
- 
-    // element access: 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reference operator[](size_type) _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
-    const_reference operator[](size_type) const _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reference at(size_type) { 
-      __throw_out_of_range("array<T, 0>::at"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
+    void swap(array&) _NOEXCEPT {
+      static_assert(!is_const<_Tp>::value,
+                    "cannot swap zero-sized array of type 'const T'");
+    }
+
+    // iterators:
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    iterator begin() _NOEXCEPT {return iterator(data());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator begin() const _NOEXCEPT {return const_iterator(data());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    iterator end() _NOEXCEPT {return iterator(data());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator end() const _NOEXCEPT {return const_iterator(data());}
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reverse_iterator rbegin() _NOEXCEPT {return reverse_iterator(end());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator rbegin() const _NOEXCEPT {return const_reverse_iterator(end());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reverse_iterator rend() _NOEXCEPT {return reverse_iterator(begin());}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator rend() const _NOEXCEPT {return const_reverse_iterator(begin());}
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator cbegin() const _NOEXCEPT {return begin();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_iterator cend() const _NOEXCEPT {return end();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator crbegin() const _NOEXCEPT {return rbegin();}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    const_reverse_iterator crend() const _NOEXCEPT {return rend();}
+
+    // capacity:
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR size_type size() const _NOEXCEPT {return 0; }
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR size_type max_size() const _NOEXCEPT {return 0;}
+    _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR bool empty() const _NOEXCEPT {return true;}
+
+    // element access:
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reference operator[](size_type) _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
-    const_reference at(size_type) const { 
-      __throw_out_of_range("array<T, 0>::at"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reference front() _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
+    const_reference operator[](size_type) const _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::operator[] on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reference at(size_type) {
+      __throw_out_of_range("array<T, 0>::at");
+      _LIBCPP_UNREACHABLE();
+    }
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
-    const_reference front() const _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
-    reference back() _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
- 
+    const_reference at(size_type) const {
+      __throw_out_of_range("array<T, 0>::at");
+      _LIBCPP_UNREACHABLE();
+    }
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reference front() _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+
     _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
-    const_reference back() const _NOEXCEPT { 
-      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array"); 
-      _LIBCPP_UNREACHABLE(); 
-    } 
-}; 
- 
- 
-#if _LIBCPP_STD_VER >= 17 
-template<class _Tp, class... _Args, 
-         class = enable_if_t<__all<_IsSame<_Tp, _Args>::value...>::value> 
-         > 
-array(_Tp, _Args...) 
-  -> array<_Tp, 1 + sizeof...(_Args)>; 
-#endif 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+    const_reference front() const _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::front() on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
+    reference back() _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+    const_reference back() const _NOEXCEPT {
+      _LIBCPP_ASSERT(false, "cannot call array<T, 0>::back() on a zero-sized array");
+      _LIBCPP_UNREACHABLE();
+    }
+};
+
+
+#if _LIBCPP_STD_VER >= 17
+template<class _Tp, class... _Args,
+         class = enable_if_t<__all<_IsSame<_Tp, _Args>::value...>::value>
+         >
+array(_Tp, _Args...)
+  -> array<_Tp, 1 + sizeof...(_Args)>;
+#endif
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return _VSTD::equal(__x.begin(), __x.end(), __y.begin()); 
-} 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return _VSTD::equal(__x.begin(), __x.end(), __y.begin());
+}
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return !(__x == __y); 
-} 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return !(__x == __y);
+}
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return _VSTD::lexicographical_compare(__x.begin(), __x.end(), 
-                                          __y.begin(), __y.end()); 
-} 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return _VSTD::lexicographical_compare(__x.begin(), __x.end(),
+                                          __y.begin(), __y.end());
+}
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return __y < __x; 
-} 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return __y < __x;
+}
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return !(__y < __x); 
-} 
- 
-template <class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY 
+operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return !(__y < __x);
+}
+
+template <class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY
 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
-operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y) 
-{ 
-    return !(__x < __y); 
-} 
- 
-template <class _Tp, size_t _Size> 
+operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
+{
+    return !(__x < __y);
+}
+
+template <class _Tp, size_t _Size>
 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
-typename enable_if 
-< 
-    _Size == 0 || 
-    __is_swappable<_Tp>::value, 
-    void 
->::type 
-swap(array<_Tp, _Size>& __x, array<_Tp, _Size>& __y) 
-                                  _NOEXCEPT_(noexcept(__x.swap(__y))) 
-{ 
-    __x.swap(__y); 
-} 
- 
-template <class _Tp, size_t _Size> 
+typename enable_if
+<
+    _Size == 0 ||
+    __is_swappable<_Tp>::value,
+    void
+>::type
+swap(array<_Tp, _Size>& __x, array<_Tp, _Size>& __y)
+                                  _NOEXCEPT_(noexcept(__x.swap(__y)))
+{
+    __x.swap(__y);
+}
+
+template <class _Tp, size_t _Size>
 struct _LIBCPP_TEMPLATE_VIS tuple_size<array<_Tp, _Size> >
-    : public integral_constant<size_t, _Size> {}; 
- 
-template <size_t _Ip, class _Tp, size_t _Size> 
-struct _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, array<_Tp, _Size> > 
-{ 
-    static_assert(_Ip < _Size, "Index out of bounds in std::tuple_element<> (std::array)"); 
-    typedef _Tp type; 
-}; 
- 
-template <size_t _Ip, class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
-_Tp& 
-get(array<_Tp, _Size>& __a) _NOEXCEPT 
-{ 
-    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)"); 
-    return __a.__elems_[_Ip]; 
-} 
- 
-template <size_t _Ip, class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
-const _Tp& 
-get(const array<_Tp, _Size>& __a) _NOEXCEPT 
-{ 
-    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)"); 
-    return __a.__elems_[_Ip]; 
-} 
- 
-template <size_t _Ip, class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
-_Tp&& 
-get(array<_Tp, _Size>&& __a) _NOEXCEPT 
-{ 
-    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)"); 
-    return _VSTD::move(__a.__elems_[_Ip]); 
-} 
- 
-template <size_t _Ip, class _Tp, size_t _Size> 
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 
-const _Tp&& 
-get(const array<_Tp, _Size>&& __a) _NOEXCEPT 
-{ 
-    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array &&)"); 
-    return _VSTD::move(__a.__elems_[_Ip]); 
-} 
- 
-#if _LIBCPP_STD_VER > 17 
- 
-template <typename _Tp, size_t _Size, size_t... _Index> 
-_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size> 
-__to_array_lvalue_impl(_Tp (&__arr)[_Size], index_sequence<_Index...>) { 
-  return {{__arr[_Index]...}}; 
-} 
- 
-template <typename _Tp, size_t _Size, size_t... _Index> 
-_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size> 
-__to_array_rvalue_impl(_Tp(&&__arr)[_Size], index_sequence<_Index...>) { 
-  return {{_VSTD::move(__arr[_Index])...}}; 
-} 
- 
-template <typename _Tp, size_t _Size> 
-_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size> 
-to_array(_Tp (&__arr)[_Size]) noexcept(is_nothrow_constructible_v<_Tp, _Tp&>) { 
-  static_assert( 
-      !is_array_v<_Tp>, 
-      "[array.creation]/1: to_array does not accept multidimensional arrays."); 
-  static_assert( 
-      is_constructible_v<_Tp, _Tp&>, 
-      "[array.creation]/1: to_array requires copy constructible elements."); 
+    : public integral_constant<size_t, _Size> {};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+struct _LIBCPP_TEMPLATE_VIS tuple_element<_Ip, array<_Tp, _Size> >
+{
+    static_assert(_Ip < _Size, "Index out of bounds in std::tuple_element<> (std::array)");
+    typedef _Tp type;
+};
+
+template <size_t _Ip, class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+_Tp&
+get(array<_Tp, _Size>& __a) _NOEXCEPT
+{
+    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array)");
+    return __a.__elems_[_Ip];
+}
+
+template <size_t _Ip, class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const _Tp&
+get(const array<_Tp, _Size>& __a) _NOEXCEPT
+{
+    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array)");
+    return __a.__elems_[_Ip];
+}
+
+template <size_t _Ip, class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+_Tp&&
+get(array<_Tp, _Size>&& __a) _NOEXCEPT
+{
+    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (std::array &&)");
+    return _VSTD::move(__a.__elems_[_Ip]);
+}
+
+template <size_t _Ip, class _Tp, size_t _Size>
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
+const _Tp&&
+get(const array<_Tp, _Size>&& __a) _NOEXCEPT
+{
+    static_assert(_Ip < _Size, "Index out of bounds in std::get<> (const std::array &&)");
+    return _VSTD::move(__a.__elems_[_Ip]);
+}
+
+#if _LIBCPP_STD_VER > 17
+
+template <typename _Tp, size_t _Size, size_t... _Index>
+_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
+__to_array_lvalue_impl(_Tp (&__arr)[_Size], index_sequence<_Index...>) {
+  return {{__arr[_Index]...}};
+}
+
+template <typename _Tp, size_t _Size, size_t... _Index>
+_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
+__to_array_rvalue_impl(_Tp(&&__arr)[_Size], index_sequence<_Index...>) {
+  return {{_VSTD::move(__arr[_Index])...}};
+}
+
+template <typename _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
+to_array(_Tp (&__arr)[_Size]) noexcept(is_nothrow_constructible_v<_Tp, _Tp&>) {
+  static_assert(
+      !is_array_v<_Tp>,
+      "[array.creation]/1: to_array does not accept multidimensional arrays.");
+  static_assert(
+      is_constructible_v<_Tp, _Tp&>,
+      "[array.creation]/1: to_array requires copy constructible elements.");
   return _VSTD::__to_array_lvalue_impl(__arr, make_index_sequence<_Size>());
-} 
- 
-template <typename _Tp, size_t _Size> 
-_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size> 
-to_array(_Tp(&&__arr)[_Size]) noexcept(is_nothrow_move_constructible_v<_Tp>) { 
-  static_assert( 
-      !is_array_v<_Tp>, 
-      "[array.creation]/4: to_array does not accept multidimensional arrays."); 
-  static_assert( 
-      is_move_constructible_v<_Tp>, 
-      "[array.creation]/4: to_array requires move constructible elements."); 
+}
+
+template <typename _Tp, size_t _Size>
+_LIBCPP_INLINE_VISIBILITY constexpr array<remove_cv_t<_Tp>, _Size>
+to_array(_Tp(&&__arr)[_Size]) noexcept(is_nothrow_move_constructible_v<_Tp>) {
+  static_assert(
+      !is_array_v<_Tp>,
+      "[array.creation]/4: to_array does not accept multidimensional arrays.");
+  static_assert(
+      is_move_constructible_v<_Tp>,
+      "[array.creation]/4: to_array requires move constructible elements.");
   return _VSTD::__to_array_rvalue_impl(_VSTD::move(__arr),
                                        make_index_sequence<_Size>());
-} 
- 
-#endif // _LIBCPP_STD_VER > 17 
- 
-_LIBCPP_END_NAMESPACE_STD 
- 
-#endif // _LIBCPP_ARRAY 
+}
+
+#endif // _LIBCPP_STD_VER > 17
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_ARRAY