Fix no_specializations test

Author: philnik777

libcxx/include/__type_traits/invoke.h

@@ -131,33 +131,35 @@ inline const bool __is_nothrow_invocable_r_v =
 // is_invocable
 
 template <class _Fn, class... _Args>
-struct is_invocable : bool_constant<__is_invocable_v<_Fn, _Args...> > {};
+struct _LIBCPP_NO_SPECIALIZATIONS is_invocable : bool_constant<__is_invocable_v<_Fn, _Args...> > {};
 
 template <class _Ret, class _Fn, class... _Args>
-struct is_invocable_r : bool_constant<__is_invocable_r_v<_Ret, _Fn, _Args...>> {};
+struct _LIBCPP_NO_SPECIALIZATIONS is_invocable_r : bool_constant<__is_invocable_r_v<_Ret, _Fn, _Args...>> {};
 
 template <class _Fn, class... _Args>
-inline constexpr bool is_invocable_v = __is_invocable_v<_Fn, _Args...>;
+_LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_invocable_v = __is_invocable_v<_Fn, _Args...>;
 
 template <class _Ret, class _Fn, class... _Args>
-inline constexpr bool is_invocable_r_v = is_invocable_r<_Ret, _Fn, _Args...>::value;
+_LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_invocable_r_v = is_invocable_r<_Ret, _Fn, _Args...>::value;
 
 // is_nothrow_invocable
 
 template <class _Fn, class... _Args>
-struct is_nothrow_invocable : bool_constant<__is_nothrow_invocable_v<_Fn, _Args...> > {};
+struct _LIBCPP_NO_SPECIALIZATIONS is_nothrow_invocable : bool_constant<__is_nothrow_invocable_v<_Fn, _Args...> > {};
 
 template <class _Ret, class _Fn, class... _Args>
-struct is_nothrow_invocable_r : integral_constant<bool, __is_nothrow_invocable_r_v<_Ret, _Fn, _Args...>> {};
+struct _LIBCPP_NO_SPECIALIZATIONS is_nothrow_invocable_r
+    : integral_constant<bool, __is_nothrow_invocable_r_v<_Ret, _Fn, _Args...>> {};
 
 template <class _Fn, class... _Args>
-inline constexpr bool is_nothrow_invocable_v = __is_nothrow_invocable_v<_Fn, _Args...>;
+_LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_nothrow_invocable_v = __is_nothrow_invocable_v<_Fn, _Args...>;
 
 template <class _Ret, class _Fn, class... _Args>
-inline constexpr bool is_nothrow_invocable_r_v = __is_nothrow_invocable_r_v<_Ret, _Fn, _Args...>;
+_LIBCPP_NO_SPECIALIZATIONS inline constexpr bool is_nothrow_invocable_r_v =
+    __is_nothrow_invocable_r_v<_Ret, _Fn, _Args...>;
 
 template <class _Fn, class... _Args>
-struct invoke_result : __invoke_result<_Fn, _Args...> {};
+struct _LIBCPP_NO_SPECIALIZATIONS invoke_result : __invoke_result<_Fn, _Args...> {};
 
 template <class _Fn, class... _Args>
 using invoke_result_t = __invoke_result_t<_Fn, _Args...>;