From: Ken Matsui <kmatsui@cs.washington.edu>
To: gcc-patches@gcc.gnu.org
Cc: Patrick Palka <ppalka@redhat.com>
Subject: [PATCH] libstdc++: use new built-in trait __remove_pointer
Date: Sun, 19 Mar 2023 19:53:19 -0700 [thread overview]
Message-ID: <CAML+3pW_2+9XTYMWEVHDyU8BKBpQEuGTkwmYVr+dcwUtzHVgsw@mail.gmail.com> (raw)
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_reference): Use __remove_pointer built-in trait.
---
diff --git a/libstdc++-v3/include/std/type_traits
b/libstdc++-v3/include/std/type_traits
index 2bd607a8b8f..cba98091aad 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -2025,17 +2025,23 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp, typename>
struct __remove_pointer_helper
- { typedef _Tp type; };
+ { using type = _Tp; };
template<typename _Tp, typename _Up>
struct __remove_pointer_helper<_Tp, _Up*>
- { typedef _Up type; };
+ { using type = _Up; };
/// remove_pointer
+#if __has_builtin(__remove_pointer)
+ template<typename _Tp>
+ struct remove_pointer
+ { using type = __remove_pointer(_Tp); };
+#else
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
next reply other threads:[~2023-03-20 2:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 2:53 Ken Matsui [this message]
2023-03-20 7:31 ` Ken Matsui
2023-03-20 7:57 ` Jonathan Wakely
2023-03-20 8:07 ` Ken Matsui
2023-03-20 9:11 ` Jonathan Wakely
2023-03-20 13:26 ` Ken Matsui
2023-03-20 22:24 ` Ken Matsui
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