1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10export namespace std {
11#if _LIBCPP_STD_VER >= 23
12  // [expected.unexpected], class template unexpected
13  using std::unexpected;
14
15  // [expected.bad], class template bad_expected_access
16  using std::bad_expected_access;
17
18  // in-place construction of unexpected values
19  using std::unexpect;
20  using std::unexpect_t;
21
22  // [expected.expected], class template expected
23  using std::expected;
24#endif // _LIBCPP_STD_VER >= 23
25} // namespace std
26