/usr/include/boost/variant/detail/move.hpp is in libboost1.55-dev 1.55.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// boost variant/detail/move.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2002-2003 Eric Friedman
// Copyright (c) 2002 by Andrei Alexandrescu
//
// 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)
//
// This file derivative of MoJO. Much thanks to Andrei for his initial work.
// See <http://www.cuj.com/experts/2102/alexandr.htm> for information on MOJO.
// Re-issued here under the Boost Software License, with permission of the original
// author (Andrei Alexandrescu).
#ifndef BOOST_VARIANT_DETAIL_MOVE_HPP
#define BOOST_VARIANT_DETAIL_MOVE_HPP
#include <iterator> // for iterator_traits
#include <new> // for placement new
#include "boost/config.hpp"
#include "boost/detail/workaround.hpp"
#include "boost/move/move.hpp"
namespace boost {
namespace detail { namespace variant {
using boost::move;
//////////////////////////////////////////////////////////////////////////
// function template move_swap
//
// Swaps using Koenig lookup but falls back to move-swap for primitive
// types and on non-conforming compilers.
//
#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP) \
|| BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(2))
// [Indicate that move_swap by overload is disabled...]
#define BOOST_NO_MOVE_SWAP_BY_OVERLOAD
// [...and provide straight swap-by-move implementation:]
template <typename T>
inline void move_swap(T& lhs, T& rhs)
{
T tmp( boost::detail::variant::move(lhs) );
lhs = boost::detail::variant::move(rhs);
rhs = boost::detail::variant::move(tmp);
}
#else// !workaround
namespace detail { namespace move_swap {
template <typename T>
inline void swap(T& lhs, T& rhs)
{
T tmp( boost::detail::variant::move(lhs) );
lhs = boost::detail::variant::move(rhs);
rhs = boost::detail::variant::move(tmp);
}
}} // namespace detail::move_swap
template <typename T>
inline void move_swap(T& lhs, T& rhs)
{
using detail::move_swap::swap;
swap(lhs, rhs);
}
#endif // workaround
}} // namespace detail::variant
} // namespace boost
#endif // BOOST_VARIANT_DETAIL_MOVE_HPP
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