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- // (C) Copyright John Maddock 2018
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- // See http://www.boost.org/libs/config for more information.
- // MACRO: BOOST_NO_CXX17_HDR_OPTIONAL
- // TITLE: C++17 header <optional> unavailable
- // DESCRIPTION: The standard library does not supply C++17 header <optional>
- #include <optional>
- namespace boost_no_cxx17_hdr_optional {
- int test()
- {
- using std::optional;
- return 0;
- }
- }
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