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// Copyright 2021 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/shared_ptr.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#include <memory>
#include <utility>
#if defined( BOOST_NO_CXX11_SMART_PTR )
BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_NO_CXX11_SMART_PTR is defined")
int main() {}
#elif defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_NO_CXX11_RVALUE_REFERENCES is defined")
int main() {}
#elif defined(BOOST_MSVC) && BOOST_MSVC < 1700
BOOST_PRAGMA_MESSAGE("Skipping test because msvc-10.0 unique_ptr doesn't support move-only deleters")
int main() {}
#else
struct Y
{
static int instances;
bool deleted_;
Y(): deleted_( false )
{
++instances;
}
~Y()
{
BOOST_TEST( deleted_ );
--instances;
}
private:
Y( Y const & );
Y & operator=( Y const & );
};
int Y::instances = 0;
struct YD
{
bool moved_;
YD(): moved_( false )
{
}
YD( YD&& r ): moved_( false )
{
r.moved_ = true;
}
void operator()( Y* p ) const
{
BOOST_TEST( !moved_ );
if( p )
{
p->deleted_ = true;
delete p;
}
else
{
BOOST_ERROR( "YD::operator()(0) called" );
}
}
private:
YD( YD const & );
YD & operator=( YD const & );
};
int main()
{
BOOST_TEST( Y::instances == 0 );
{
std::unique_ptr<Y, YD> p( new Y );
BOOST_TEST( Y::instances == 1 );
boost::shared_ptr<Y> p2( std::move( p ) );
BOOST_TEST( Y::instances == 1 );
BOOST_TEST( p.get() == 0 );
BOOST_TEST( p.get_deleter().moved_ );
p2.reset();
BOOST_TEST( Y::instances == 0 );
}
{
std::unique_ptr<Y, YD> p( new Y );
BOOST_TEST( Y::instances == 1 );
boost::shared_ptr<void> p2( std::move( p ) );
BOOST_TEST( Y::instances == 1 );
BOOST_TEST( p.get() == 0 );
BOOST_TEST( p.get_deleter().moved_ );
p2.reset();
BOOST_TEST( Y::instances == 0 );
}
{
std::unique_ptr<Y, YD> p( new Y );
BOOST_TEST( Y::instances == 1 );
boost::shared_ptr<Y> p2;
p2 = std::move( p );
BOOST_TEST( Y::instances == 1 );
BOOST_TEST( p.get() == 0 );
BOOST_TEST( p.get_deleter().moved_ );
p2.reset();
BOOST_TEST( Y::instances == 0 );
}
{
std::unique_ptr<Y, YD> p( new Y );
BOOST_TEST( Y::instances == 1 );
boost::shared_ptr<void> p2( new int(0) );
p2 = std::move( p );
BOOST_TEST( Y::instances == 1 );
BOOST_TEST( p.get() == 0 );
BOOST_TEST( p.get_deleter().moved_ );
p2.reset();
BOOST_TEST( Y::instances == 0 );
}
return boost::report_errors();
}
#endif
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