diff mbox series

[2/2] libstdc++: use new built-in trait __remove_pointer

Message ID 20230320222249.20069-2-kmatsui@cs.washington.edu
State Superseded
Headers
Series [1/2] c++: implement __remove_pointer built-in trait |

Commit Message

Ken Matsui March 20, 2023, 10:22 p.m. UTC 
  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.
---
 libstdc++-v3/include/std/type_traits | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
index 2bd607a8b8f..8b0db4d37bc 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -2023,19 +2023,25 @@  _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
-    { 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
   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