This patch lets libstdc++ use new built-in trait __is_pointer. libstdc++-v3/ChangeLog:
* include/std/type_traits (is_pointer): Use __is_pointer built-in trait. (is_pointer_v): Likewise. Signed-off-by: Ken Matsui <kmat...@gcc.gnu.org> --- libstdc++-v3/include/std/type_traits | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 0e7a9c9c7f3..d83db98403b 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -515,6 +515,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_array<_Tp[]> : public true_type { }; + /// is_pointer +#if __has_builtin(__is_pointer) + template<typename _Tp> + struct is_pointer + : public __bool_constant<__is_pointer(_Tp)> + { }; +#else template<typename> struct __is_pointer_helper : public false_type { }; @@ -523,11 +530,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __is_pointer_helper<_Tp*> : public true_type { }; - /// is_pointer template<typename _Tp> struct is_pointer : public __is_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#endif /// is_lvalue_reference template<typename> -- 2.41.0