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_IS_NOTHROW_COPY_CONSTRUCTIBLE_H
10#define _LIBCPP___TYPE_TRAITS_IS_NOTHROW_COPY_CONSTRUCTIBLE_H
11
12#include <__config>
13#include <__type_traits/add_const.h>
14#include <__type_traits/add_lvalue_reference.h>
15#include <__type_traits/integral_constant.h>
16#include <__type_traits/is_nothrow_constructible.h>
17
18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19#  pragma GCC system_header
20#endif
21
22_LIBCPP_BEGIN_NAMESPACE_STD
23
24// TODO: remove this implementation once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is fixed
25#ifdef _LIBCPP_COMPILER_GCC
26
27template <class _Tp>
28struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible
29    : public is_nothrow_constructible<_Tp, __add_lvalue_reference_t<typename add_const<_Tp>::type> > {};
30
31#else // _LIBCPP_COMPILER_GCC
32
33template <class _Tp>
34struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible
35    : public integral_constant<
36          bool,
37          __is_nothrow_constructible(_Tp, typename add_lvalue_reference<typename add_const<_Tp>::type>::type)> {};
38
39#endif // _LIBCPP_COMPILER_GCC
40
41#if _LIBCPP_STD_VER >= 17
42template <class _Tp>
43inline constexpr bool is_nothrow_copy_constructible_v = is_nothrow_copy_constructible<_Tp>::value;
44#endif
45
46_LIBCPP_END_NAMESPACE_STD
47
48#endif // _LIBCPP___TYPE_TRAITS_IS_NOTHROW_COPY_CONSTRUCTIBLE_H
49