Update libc++ to revision ab0554b2 (31 Jan 2022).

Notable changes:
* allow using thread safety annotation in MinGW mode
* implement compare_{strong,weak,partial}_fallback
* omit atomic_{,un}signed_lock_free on platforms that doesn't support lock free atomics
* set enable_borrowed_range template variable for ref_view and empty_view
* fix bug in reverse_iterator::operator=
* move some function from directory_iterator.cpp to a header so that they can be reused
* fix bug in ranges::advance when try to advance by 0
* fix missing constraint which affects common_iterator for output iterators
* correctly handle move-only iterators in move_iterator
* make base() method in counted_iterator and transform_view::iterator noexcept
* remove C++03 workarounds in reference_wrapper, since clang supports necessary features in C++03 mode
* simplify convertible_to concept implementation
* fix issue with __convertible_to_non_slicing rejecting correct case
* remove excessive wrapping in std::ref and std::cref
* fix std::seed_seq constructors
* remove std::basic_string base class when using ABI v2
* std::basic_string::reserve now never shrinks in all C++ modes

ref:b62ec6bac0283b075dd2348bad7e8a271155b378

1 files changed, 13 insertions, 10 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/module.modulemap b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
index 90fae9bb836..fc05f6c6664 100644
--- a/contrib/libs/cxxsupp/libcxx/include/module.modulemap
+++ b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
@@ -385,16 +385,19 @@ module std [system] {
     export *
 
     module __compare {
-      module common_comparison_category { private header "__compare/common_comparison_category.h" }
-      module compare_three_way          { private header "__compare/compare_three_way.h" }
-      module compare_three_way_result   { private header "__compare/compare_three_way_result.h" }
-      module is_eq                      { private header "__compare/is_eq.h" }
-      module ordering                   { private header "__compare/ordering.h" }
-      module partial_order              { private header "__compare/partial_order.h" }
-      module strong_order               { private header "__compare/strong_order.h" }
-      module synth_three_way            { private header "__compare/synth_three_way.h" }
-      module three_way_comparable       { private header "__compare/three_way_comparable.h" }
-      module weak_order                 { private header "__compare/weak_order.h" }
+      module common_comparison_category     { private header "__compare/common_comparison_category.h" }
+      module compare_partial_order_fallback { private header "__compare/compare_partial_order_fallback.h" }
+      module compare_strong_order_fallback  { private header "__compare/compare_strong_order_fallback.h" }
+      module compare_three_way              { private header "__compare/compare_three_way.h" }
+      module compare_three_way_result       { private header "__compare/compare_three_way_result.h" }
+      module compare_weak_order_fallback    { private header "__compare/compare_weak_order_fallback.h" }
+      module is_eq                          { private header "__compare/is_eq.h" }
+      module ordering                       { private header "__compare/ordering.h" }
+      module partial_order                  { private header "__compare/partial_order.h" }
+      module strong_order                   { private header "__compare/strong_order.h" }
+      module synth_three_way                { private header "__compare/synth_three_way.h" }
+      module three_way_comparable           { private header "__compare/three_way_comparable.h" }
+      module weak_order                     { private header "__compare/weak_order.h" }
     }
   }
   module complex {