On Sat, 8 Jul 2023 at 06:31, Ken Matsui via Libstdc++
<libstd...@gcc.gnu.org> wrote:
>
> This patch lets libstdc++ use new built-in trait __remove_pointer.
>
> libstdc++-v3/ChangeLog:
>
>         * include/std/type_traits (remove_pointer): Use __remove_pointer 
> built-in trait.
>
> Signed-off-by: Ken Matsui <kmat...@gcc.gnu.org>

OK for trunk after the front-end __remove_pointer is committed.


> ---
>  libstdc++-v3/include/std/type_traits | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/libstdc++-v3/include/std/type_traits 
> b/libstdc++-v3/include/std/type_traits
> index 0e7a9c9c7f3..81497e2f3e1 100644
> --- a/libstdc++-v3/include/std/type_traits
> +++ b/libstdc++-v3/include/std/type_traits
> @@ -2023,6 +2023,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
>
>    // Pointer modifications.
>
> +  /// remove_pointer
> +#if __has_builtin(__remove_pointer)
> +  template<typename _Tp>
> +    struct remove_pointer
> +    { using type = __remove_pointer(_Tp); };
> +#else
>    template<typename _Tp, typename>
>      struct __remove_pointer_helper
>      { using type = _Tp; };
> @@ -2031,11 +2037,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
>      struct __remove_pointer_helper<_Tp, _Up*>
>      { using type = _Up; };
>
> -  /// remove_pointer
>    template<typename _Tp>
>      struct remove_pointer
>      : public __remove_pointer_helper<_Tp, __remove_cv_t<_Tp>>
>      { };
> +#endif
>
>    template<typename _Tp, typename = void>
>      struct __add_pointer_helper
> --
> 2.41.0
>

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