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//-----------------------------------------------------------------------------
// boost variant/detail/forced_return.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2003 Eric Friedman
// Copyright (c) 2015-2019 Antony Polukhin
//
// Distributed under 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)
#ifndef BOOST_VARIANT_DETAIL_FORCED_RETURN_HPP
#define BOOST_VARIANT_DETAIL_FORCED_RETURN_HPP
#include <boost/config.hpp>
#include <boost/assert.hpp>
#ifdef BOOST_MSVC
# pragma warning( push )
# pragma warning( disable : 4702 ) // unreachable code
#endif
namespace boost { namespace detail { namespace variant {
///////////////////////////////////////////////////////////////////////////////
// (detail) function template forced_return
//
// Logical error to permit invocation at runtime, but (artificially) satisfies
// compile-time requirement of returning a result value.
//
template <typename T>
BOOST_NORETURN inline T
forced_return()
{
// logical error: should never be here! (see above)
BOOST_ASSERT(false);
T (*dummy)() = 0;
(void)dummy;
BOOST_UNREACHABLE_RETURN(dummy());
}
}}} // namespace boost::detail::variant
#ifdef BOOST_MSVC
# pragma warning( pop )
#endif
#endif // BOOST_VARIANT_DETAIL_FORCED_RETURN_HPP
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