Update libc++ to b6d87773 (14 Jan 2022).

Notable changes:
* implement operator << for filesystem::directory_entry
* add std::ranges::in_in_result
* add std::ranges::owning_view
* add std::ranges::cdata
* add std::ranges::construct_at and destroy{,_n,_at}
* small fixes in std::ranges::data
* SFINAE away std::ranges::cbegin(const T&&) for non-borrowed T
* use arc4random to implement std::random_device on Apple
* introduce __fits_in_sso to put constexpr check into a central place
* introduce __debug_db_insert_c to put #if and constexpr check into a central place

ref:b3dd06bd52f06e8939227ca0f0a5873d0c211e48

1 files changed, 18 insertions, 48 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/vector b/contrib/libs/cxxsupp/libcxx/include/vector
index 0050fc4f8c..3d4d1eaff9 100644
--- a/contrib/libs/cxxsupp/libcxx/include/vector
+++ b/contrib/libs/cxxsupp/libcxx/include/vector
@@ -376,11 +376,9 @@ public:
 
     _LIBCPP_INLINE_VISIBILITY
     vector() _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+    {
+        _VSTD::__debug_db_insert_c(this);
+    }
     _LIBCPP_INLINE_VISIBILITY explicit vector(const allocator_type& __a)
 #if _LIBCPP_STD_VER <= 14
         _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
@@ -389,9 +387,7 @@ public:
 #endif
         : __base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-        __get_db()->__insert_c(this);
-#endif
+        _VSTD::__debug_db_insert_c(this);
     }
     explicit vector(size_type __n);
 #if _LIBCPP_STD_VER > 11
@@ -403,9 +399,7 @@ public:
     vector(size_type __n, const value_type& __x, const allocator_type& __a)
         : __base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-      __get_db()->__insert_c(this);
-#endif
+      _VSTD::__debug_db_insert_c(this);
       if (__n > 0)
       {
           __vallocate(__n);
@@ -1134,9 +1128,7 @@ vector<_Tp, _Allocator>::__append(size_type __n, const_reference __x)
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
@@ -1149,9 +1141,7 @@ template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n, const allocator_type& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
@@ -1163,9 +1153,7 @@ vector<_Tp, _Allocator>::vector(size_type __n, const allocator_type& __a)
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n, const value_type& __x)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
@@ -1183,9 +1171,7 @@ vector<_Tp, _Allocator>::vector(_InputIterator __first,
                             typename iterator_traits<_InputIterator>::reference>::value,
                           _InputIterator>::type __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __first != __last; ++__first)
         __emplace_back(*__first);
 }
@@ -1200,9 +1186,7 @@ vector<_Tp, _Allocator>::vector(_InputIterator __first, _InputIterator __last, c
                             typename iterator_traits<_InputIterator>::reference>::value>::type*)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __first != __last; ++__first)
         __emplace_back(*__first);
 }
@@ -1216,9 +1200,7 @@ vector<_Tp, _Allocator>::vector(_ForwardIterator __first,
                                    typename iterator_traits<_ForwardIterator>::reference>::value,
                                                    _ForwardIterator>::type __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
     if (__n > 0)
     {
@@ -1236,9 +1218,7 @@ vector<_Tp, _Allocator>::vector(_ForwardIterator __first, _ForwardIterator __las
                                    typename iterator_traits<_ForwardIterator>::reference>::value>::type*)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
     if (__n > 0)
     {
@@ -1251,9 +1231,7 @@ template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(const vector& __x)
     : __base(__alloc_traits::select_on_container_copy_construction(__x.__alloc()))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = __x.size();
     if (__n > 0)
     {
@@ -1266,9 +1244,7 @@ template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(const vector& __x, const __identity_t<allocator_type>& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = __x.size();
     if (__n > 0)
     {
@@ -1289,8 +1265,8 @@ vector<_Tp, _Allocator>::vector(vector&& __x)
 #endif
     : __base(_VSTD::move(__x.__alloc()))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, _VSTD::addressof(__x));
 #endif
     this->__begin_ = __x.__begin_;
@@ -1304,9 +1280,7 @@ inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(vector&& __x, const __identity_t<allocator_type>& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a == __x.__alloc())
     {
         this->__begin_ = __x.__begin_;
@@ -1328,9 +1302,7 @@ template <class _Tp, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__il.size() > 0)
     {
         __vallocate(__il.size());
@@ -1343,9 +1315,7 @@ inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(initializer_list<value_type> __il, const allocator_type& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__il.size() > 0)
     {
         __vallocate(__il.size());