Update libc++ to 8f0b2ac1 (12 Feb 2022).

Notable changes:
* use [[no_unique_address]] for field `__base_` in join_view
* remove _LIBCPP_HIDE_FROM_ABI from __threading_support functions
* remove __functional_base header which is just a set of #include directives
* remove unused include in ranges_swap_ranges.h
* do not print bools with "c" format.
* add noexcept to basic_format_context::arg constructor
* add ranges::min_element
* add ranges::in_fun_result
* add ranges::swap_ranges
* add std::vector::reference::operator=(bool) const
* replace _LIBCPP_DEBUG with _LIBCPP_DEBUG_LEVEL
* fix constexpr in __debug_less
* modernize code in compress_pair.h
* add permutable concept
* cleanup format headers
* remove _LIBCPP_ABI_UNSTABLE, we must set _LIBCPP_ABI_VERSION and _LIBCPP_ABI_NAMESPACE outselves now
* make some members private in experimental/functional
* remove std::nullptr_t emulation in C++03 mode

ref:f3c7583f32067a3dd9da42aeb15f1b01d746dc59

1 files changed, 1 insertions, 28 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/experimental/functional b/contrib/libs/cxxsupp/libcxx/include/experimental/functional
index 4e081e8023..de21ab6982 100644
--- a/contrib/libs/cxxsupp/libcxx/include/experimental/functional
+++ b/contrib/libs/cxxsupp/libcxx/include/experimental/functional
@@ -18,29 +18,6 @@
 namespace std {
 namespace experimental {
 inline namespace fundamentals_v1 {
-
-    // See C++14 20.9.9, Function object binders
-    template <class T> constexpr bool is_bind_expression_v
-      = is_bind_expression<T>::value;
-    template <class T> constexpr int is_placeholder_v
-      = is_placeholder<T>::value;
-
-    // 4.2, Class template function
-    template<class> class function; // undefined
-    template<class R, class... ArgTypes> class function<R(ArgTypes...)>;
-
-    template<class R, class... ArgTypes>
-    void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&);
-
-    template<class R, class... ArgTypes>
-    bool operator==(const function<R(ArgTypes...)>&, nullptr_t) noexcept;
-    template<class R, class... ArgTypes>
-    bool operator==(nullptr_t, const function<R(ArgTypes...)>&) noexcept;
-    template<class R, class... ArgTypes>
-    bool operator!=(const function<R(ArgTypes...)>&, nullptr_t) noexcept;
-    template<class R, class... ArgTypes>
-    bool operator!=(nullptr_t, const function<R(ArgTypes...)>&) noexcept;
-
     // 4.3, Searchers
     template<class ForwardIterator, class BinaryPredicate = equal_to<>>
       class default_searcher;
@@ -79,9 +56,6 @@ inline namespace fundamentals_v1 {
   } // namespace fundamentals_v1
   } // namespace experimental
 
-  template<class R, class... ArgTypes, class Alloc>
-  struct uses_allocator<experimental::function<R(ArgTypes...)>, Alloc>;
-
 } // namespace std
 
 */
@@ -144,7 +118,6 @@ template<class _Key, class _Value, class _Hash, class _BinaryPredicate, bool /*u
 //  General case for BM data searching; use a map
 template<class _Key, typename _Value, class _Hash, class _BinaryPredicate>
 class _BMSkipTable<_Key, _Value, _Hash, _BinaryPredicate, false> {
-public: // TODO private:
     typedef _Value value_type;
     typedef _Key   key_type;
 
@@ -253,7 +226,7 @@ public:
         return this->__search(__f, __l);
     }
 
-public: // TODO private:
+private:
     _RandomAccessIterator1               __first_;
     _RandomAccessIterator1               __last_;
     _BinaryPredicate                     __pred_;