On Sat, 8 Jul 2023 at 05:50, Ken Matsui via Libstdc++
<libstd...@gcc.gnu.org> wrote:
>
> This patch replaces is_enum<T>::value with __is_enum built-in trait in
> the type_traits header.
>
> libstdc++-v3/ChangeLog:
>
> * include/std/type_traits (__make_unsigned_selector): Use
> __is_enum built-in trait.
> (__make_signed_selector): Likewise.
> (__underlying_type_impl): Likewise.
>
> Signed-off-by: Ken Matsui <kmat...@gcc.gnu.org>
OK for trunk, thanks!
> ---
> libstdc++-v3/include/std/type_traits | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/libstdc++-v3/include/std/type_traits
> b/libstdc++-v3/include/std/type_traits
> index 0e7a9c9c7f3..9f086992ebc 100644
> --- a/libstdc++-v3/include/std/type_traits
> +++ b/libstdc++-v3/include/std/type_traits
> @@ -1740,7 +1740,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> // Select between integral and enum: not possible to be both.
> template<typename _Tp,
> bool _IsInt = is_integral<_Tp>::value,
> - bool _IsEnum = is_enum<_Tp>::value>
> + bool _IsEnum = __is_enum(_Tp)>
> class __make_unsigned_selector;
>
> template<typename _Tp>
> @@ -1900,7 +1900,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> // Select between integral and enum: not possible to be both.
> template<typename _Tp,
> bool _IsInt = is_integral<_Tp>::value,
> - bool _IsEnum = is_enum<_Tp>::value>
> + bool _IsEnum = __is_enum(_Tp)>
> class __make_signed_selector;
>
> template<typename _Tp>
> @@ -2353,7 +2353,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> struct __common_type_fold<_CTp, _Rp, void>
> { };
>
> - template<typename _Tp, bool = is_enum<_Tp>::value>
> + template<typename _Tp, bool = __is_enum(_Tp)>
> struct __underlying_type_impl
> {
> using type = __underlying_type(_Tp);
> --
> 2.41.0
>
