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#ifndef BOOST_CONTRACT_DETAIL_AUTO_PTR_HPP_#define BOOST_CONTRACT_DETAIL_AUTO_PTR_HPP_// Copyright (C) 2008-2018 Lorenzo Caminiti// Distributed under the Boost Software License, Version 1.0 (see accompanying// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html#include <boost/contract/detail/operator_safe_bool.hpp>#include <boost/contract/detail/debug.hpp>#include <boost/config.hpp>namespace boost { namespace contract { namespace detail {// Using this instead of std::auto_ptr because std::auto_ptr will be removed in// C++17 (this library always uses release() to avoid ownership issues).template<typename T>class auto_ptr { // Copyable (using default copy operations).public:    explicit auto_ptr(T* ptr = 0) : ptr_(ptr) {}    ~auto_ptr() BOOST_NOEXCEPT_IF(false) { delete ptr_; }    T* release() {        T* ptr = ptr_;        ptr_ = 0;        return ptr;    }    T& operator*() {        BOOST_CONTRACT_DETAIL_DEBUG(ptr_);        return *ptr_;    }        T const& operator*() const {        BOOST_CONTRACT_DETAIL_DEBUG(ptr_);        return *ptr_;    }    T* operator->() { return ptr_; }    T const* operator->() const { return ptr_; }    BOOST_CONTRACT_DETAIL_OPERATOR_SAFE_BOOL(auto_ptr<T>, !!ptr_)private:    T* ptr_;};} } } // namespace#endif // #include guard
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