Message ID | 20230322234134.14578-2-kmatsui@cs.washington.edu |
---|---|
State | New |
Headers | show |
Series | [1/2] c++: implement __is_volatile built-in trait | expand |
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 2bd607a8b8f..c50c8dba396 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -773,6 +773,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : public true_type { }; /// is_volatile +#if __has_builtin(__is_volatile) + template<typename _Tp> + struct is_volatile + : public __bool_constant<__is_volatile(_Tp)> + { }; +#else template<typename> struct is_volatile : public false_type { }; @@ -780,6 +786,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _Tp> struct is_volatile<_Tp volatile> : public true_type { }; +#endif /// is_trivial template<typename _Tp>