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The vendors of the MSVC STL, libstdc++ and libc++ have agreed [1] to make the C++23 modules std and std.compat available in C++20. This provides the std module; libc++ has not implemented the std.compat module yet. [1] https://github.com/microsoft/STL/issues/3945 Depends on D158357 Reviewed By: #libc, ldionne Differential Revision: https://reviews.llvm.org/D158358
26 lines
826 B
C++
26 lines
826 B
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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export namespace std {
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#if _LIBCPP_STD_VER >= 23
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// [expected.unexpected], class template unexpected
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using std::unexpected;
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// [expected.bad], class template bad_expected_access
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using std::bad_expected_access;
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// in-place construction of unexpected values
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using std::unexpect;
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using std::unexpect_t;
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// [expected.expected], class template expected
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using std::expected;
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#endif // _LIBCPP_STD_VER >= 23
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} // namespace std
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