diff --git a/contrib/llvm-project/libcxx/include/__type_traits/remove_cv.h b/contrib/llvm-project/libcxx/include/__type_traits/remove_cv.h
index 50e9f3e8aa78..2c4e9e419a1b 100644
--- a/contrib/llvm-project/libcxx/include/__type_traits/remove_cv.h
+++ b/contrib/llvm-project/libcxx/include/__type_traits/remove_cv.h
@@ -1,40 +1,40 @@
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _LIBCPP___TYPE_TRAITS_REMOVE_CV_H
 #define _LIBCPP___TYPE_TRAITS_REMOVE_CV_H
 
 #include <__config>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp>
 struct remove_cv {
   using type _LIBCPP_NODEBUG = __remove_cv(_Tp);
 };
 
 #if defined(_LIBCPP_COMPILER_GCC)
 template <class _Tp>
 using __remove_cv_t = typename remove_cv<_Tp>::type;
 #else
 template <class _Tp>
 using __remove_cv_t = __remove_cv(_Tp);
-#endif
+#endif // __has_builtin(__remove_cv)
 
 #if _LIBCPP_STD_VER >= 14
 template <class _Tp>
 using remove_cv_t = __remove_cv_t<_Tp>;
 #endif
 
 _LIBCPP_END_NAMESPACE_STD
 
 #endif // _LIBCPP___TYPE_TRAITS_REMOVE_CV_H