[v3,6/6] libstdc++: make std::is_object dispatch to new built-in traits
Checks
Commit Message
This patch gets std::is_object to dispatch to new built-in traits,
__is_function, __is_reference, and __is_void.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_object): Use new built-in traits,
__is_function, __is_reference, and __is_void.
Signed-off-by: Ken Matsui <kmatsui@cs.washington.edu>
---
libstdc++-v3/include/std/type_traits | 9 +++++++++
1 file changed, 9 insertions(+)
@@ -682,11 +682,20 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ };
/// is_object
+#if __has_builtin(__is_function) && __has_builtin(__is_reference) \
+ && __has_builtin(__is_void)
+ template<typename _Tp>
+ struct is_object
+ : public __bool_constant<!(__is_function(_Tp) || __is_reference(_Tp) ||
+ __is_void(_Tp))>
+ { };
+#else
template<typename _Tp>
struct is_object
: public __not_<__or_<is_function<_Tp>, is_reference<_Tp>,
is_void<_Tp>>>::type
{ };
+#endif
template<typename>
struct is_member_pointer;