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, 6 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/module.modulemap b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
index 305fe1bc9d3..e7f197ec83f 100644
--- a/contrib/libs/cxxsupp/libcxx/include/module.modulemap
+++ b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
@@ -246,6 +246,7 @@ module std [system] {
       module generate                 { private header "__algorithm/generate.h" }
       module generate_n               { private header "__algorithm/generate_n.h" }
       module half_positive            { private header "__algorithm/half_positive.h" }
+      module in_in_result             { private header "__algorithm/in_in_result.h" }
       module in_out_result            { private header "__algorithm/in_out_result.h" }
       module includes                 { private header "__algorithm/includes.h" }
       module inplace_merge            { private header "__algorithm/inplace_merge.h" }
@@ -661,6 +662,10 @@ module std [system] {
       module concepts                        { private header "__memory/concepts.h" }
       module construct_at                    { private header "__memory/construct_at.h" }
       module pointer_traits                  { private header "__memory/pointer_traits.h" }
+      module ranges_construct_at {
+        private header "__memory/ranges_construct_at.h"
+        export __function_like
+      }
       module ranges_uninitialized_algorithms {
         private header "__memory/ranges_uninitialized_algorithms.h"
         export __function_like
@@ -795,6 +800,7 @@ module std [system] {
       module iota_view              { private header "__ranges/iota_view.h" }
       module join_view              { private header "__ranges/join_view.h" }
       module non_propagating_cache  { private header "__ranges/non_propagating_cache.h" }
+      module owning_view            { private header "__ranges/owning_view.h" }
       module range_adaptor          { private header "__ranges/range_adaptor.h" }
       module ref_view               { private header "__ranges/ref_view.h" }
       module reverse_view           { private header "__ranges/reverse_view.h" }