Fix CI

Author: H-G-Hristov

libcxx/include/__type_traits/reference_constructs_from_temporary.h

@@ -18,7 +18,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 23 && __has_builtin(__reference_constructs_from_temporary)
 
 template <class _Tp, class _Up>
 struct _LIBCPP_TEMPLATE_VIS _LIBCPP_NO_SPECIALIZATIONS reference_constructs_from_temporary

libcxx/include/__type_traits/reference_converts_from_temporary.h

@@ -18,7 +18,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 23 && __has_builtin(__reference_converts_from_temporary)
 
 template <class _Tp, class _Up>
 struct _LIBCPP_TEMPLATE_VIS _LIBCPP_NO_SPECIALIZATIONS reference_converts_from_temporary

libcxx/modules/std/type_traits.inc

@@ -107,10 +107,10 @@ export namespace std {
   using std::has_unique_object_representations;
 
 #if _LIBCPP_STD_VER >= 23
-#  if _LIBCPP_HAS_REFERENCE_CONSTRUCTS_FROM_TEMPORARY
+#  if __has_builtin(__reference_constructs_from_temporary)
   using std::reference_constructs_from_temporary;
 #  endif
-#  if _LIBCPP_HAS_REFERENCE_CONVERTS_FROM_TEMPORARY
+#  if __has_builtin(__reference_converts_from_temporary)
   using std::reference_converts_from_temporary;
 #  endif
 #endif
@@ -291,10 +291,10 @@ export namespace std {
   using std::is_unsigned_v;
   using std::is_volatile_v;
 #if _LIBCPP_STD_VER >= 23
-#  if _LIBCPP_HAS_REFERENCE_CONSTRUCTS_FROM_TEMPORARY
+#  if __has_builtin(__reference_constructs_from_temporary)
   using std::reference_constructs_from_temporary_v;
 #  endif
-#  if _LIBCPP_HAS_REFERENCE_CONVERTS_FROM_TEMPORARY
+#  if __has_builtin(__reference_converts_from_temporary)
   using std::reference_converts_from_temporary_v;
 #  endif
 #endif