Update libc++ to a7c2a628 (15 Feb 2022).

Notable changes:
* macros for disabling and enabling compile warnings
* replace _VSTD with std in __ranges
* add stdatomic.h
* implement unreachable()
* implement ranges::rbegin, rend, crbegin and crend
* remove experimental/filesystem header

ref:3104f711bf2401dd8b882290fa4fa01f71924406

1 files changed, 7 insertions, 4 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/module.modulemap b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
index 6a55bf3f42..b958737645 100644
--- a/contrib/libs/cxxsupp/libcxx/include/module.modulemap
+++ b/contrib/libs/cxxsupp/libcxx/include/module.modulemap
@@ -50,6 +50,10 @@ module std [system] {
       header "setjmp.h"
       export *
     }
+    module stdatomic_h {
+      header "stdatomic.h"
+      export *
+    }
     // FIXME: <stdalign.h> is missing.
     // <signal.h> provided by C library.
     // <stdarg.h> provided by compiler.
@@ -815,7 +819,9 @@ module std [system] {
       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 rbegin                 { private header "__ranges/rbegin.h" }
       module ref_view               { private header "__ranges/ref_view.h" }
+      module rend                   { private header "__ranges/rend.h" }
       module reverse_view           { private header "__ranges/reverse_view.h" }
       module single_view            { private header "__ranges/single_view.h" }
       module size                   { private header "__ranges/size.h" }
@@ -959,6 +965,7 @@ module std [system] {
       module swap                { private header "__utility/swap.h" }
       module to_underlying       { private header "__utility/to_underlying.h" }
       module transaction         { private header "__utility/transaction.h" }
+      module unreachable         { private header "__utility/unreachable.h" }
     }
   }
   module valarray {
@@ -1020,10 +1027,6 @@ module std [system] {
       header "experimental/deque"
       export *
     }
-    module filesystem {
-      header "experimental/filesystem"
-      export *
-    }
     module forward_list {
       header "experimental/forward_list"
       export *