1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___TYPE_TRAITS_HAS_UNIQUE_OBJECT_REPRESENTATION_H 10 #define _LIBCPP___TYPE_TRAITS_HAS_UNIQUE_OBJECT_REPRESENTATION_H 11 12 #include <__config> 13 #include <__type_traits/integral_constant.h> 14 #include <__type_traits/remove_all_extents.h> 15 #include <__type_traits/remove_cv.h> 16 17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18 # pragma GCC system_header 19 #endif 20 21 _LIBCPP_BEGIN_NAMESPACE_STD 22 23 #if _LIBCPP_STD_VER > 14 24 25 template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_unique_object_representations 26 : public integral_constant<bool, 27 __has_unique_object_representations(remove_cv_t<remove_all_extents_t<_Tp>>)> {}; 28 29 template <class _Tp> 30 inline constexpr bool has_unique_object_representations_v = has_unique_object_representations<_Tp>::value; 31 32 #endif 33 34 _LIBCPP_END_NAMESPACE_STD 35 36 #endif // _LIBCPP___TYPE_TRAITS_HAS_UNIQUE_OBJECT_REPRESENTATION_H 37