Update libc++ to 9b03c08e (6 Mar 2022).

Notable changes:
* don't warn that coroutines are not supported when using experimental/coroutine
* add _LIBCPP_HIDE_FROM_ABI to __quoted_proxy constructors
* ADL-proof calls of __quoted
* fix ctype facet `is` method for Windows
* change return type of bit_width to int (LWG3656)
* make private __wrap_iter constructors explicit
* fix delayed initialization of `__fill_` in basic_ios
* ranges::iter_move cleanup
* ADL-proof __synth_three_way
* reject random number generators with signed types
* use C++ overloads from math.h on AIX
* add explicit to some internal constructors
* replace _LIBCPP_HAS_NO_STRONG_ENUMS with C++ version check
* use `inline constexpr bool` instead of `constexpr bool` for helpers in ranges
* reject uniform_int_distribution<bool>, uniform_int_distribution<char> and all user types
* allow std::mergeable and std::sortable even with incomplete ranges
* fix double close bug in std::filesystem::remove_all
* remove recursion in basic_string::insert because it interferes with constexpr
* fix error checking of wctob_l calls
* pack _Flags class on AIX
* fix integer type in __estimate_column_width exposed by AIX
* qualify all std::move calls with std
* make chrono includes granular
* set std::numeric_limits::tinyness_before to true on ARM
* add ranges::in_found_result and ranges::min_max_result

1 files changed, 3 insertions, 3 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/__debug b/contrib/libs/cxxsupp/libcxx/include/__debug
index b7677a22c85..a4160b3b7f4 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__debug
+++ b/contrib/libs/cxxsupp/libcxx/include/__debug
@@ -66,7 +66,7 @@ struct _LIBCPP_TYPE_VIS __c_node
     __c_node& operator=(const __c_node&) = delete;
 
     _LIBCPP_INLINE_VISIBILITY
-    __c_node(void* __c, __c_node* __next)
+    explicit __c_node(void* __c, __c_node* __next)
         : __c_(__c), __next_(__next), beg_(nullptr), end_(nullptr), cap_(nullptr) {}
     virtual ~__c_node();
 
@@ -83,7 +83,7 @@ template <class _Cont>
 struct _C_node
     : public __c_node
 {
-    _C_node(void* __c, __c_node* __n)
+    explicit _C_node(void* __c, __c_node* __n)
         : __c_node(__c, __n) {}
 
     virtual bool __dereferenceable(const void*) const;
@@ -141,7 +141,7 @@ class _LIBCPP_TYPE_VIS __libcpp_db
     __i_node** __iend_;
     size_t   __isz_;
 
-    __libcpp_db();
+    explicit __libcpp_db();
 public:
     __libcpp_db(const __libcpp_db&) = delete;
     __libcpp_db& operator=(const __libcpp_db&) = delete;