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- //
- // shared_array nullptr test
- //
- // Copyright 2012, 2013 Peter Dimov
- //
- // 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
- //
- #include <boost/shared_array.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <cstddef>
- #include <memory>
- #if !defined( BOOST_NO_CXX11_NULLPTR )
- struct X
- {
- static int instances;
- X()
- {
- ++instances;
- }
- ~X()
- {
- --instances;
- }
- private:
- X( X const & );
- X & operator=( X const & );
- };
- int X::instances = 0;
- int main()
- {
- {
- boost::shared_array<int> p( nullptr );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- BOOST_TEST( p == nullptr );
- BOOST_TEST( nullptr == p );
- BOOST_TEST( !( p != nullptr ) );
- BOOST_TEST( !( nullptr != p ) );
- }
- {
- boost::shared_array<int> p( new int[ 1 ] );
- BOOST_TEST( p.get() != 0 );
- BOOST_TEST( p.use_count() == 1 );
- BOOST_TEST( p != nullptr );
- BOOST_TEST( nullptr != p );
- BOOST_TEST( !( p == nullptr ) );
- BOOST_TEST( !( nullptr == p ) );
- p = nullptr;
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- BOOST_TEST( p == nullptr );
- BOOST_TEST( nullptr == p );
- BOOST_TEST( !( p != nullptr ) );
- BOOST_TEST( !( nullptr != p ) );
- }
- {
- BOOST_TEST( X::instances == 0 );
- boost::shared_array<X> p( new X[ 2 ] );
- BOOST_TEST( X::instances == 2 );
- BOOST_TEST( p.get() != 0 );
- BOOST_TEST( p.use_count() == 1 );
- BOOST_TEST( p != nullptr );
- BOOST_TEST( nullptr != p );
- BOOST_TEST( !( p == nullptr ) );
- BOOST_TEST( !( nullptr == p ) );
- p = nullptr;
- BOOST_TEST( X::instances == 0 );
- BOOST_TEST( p.get() == 0 );
- BOOST_TEST( p.use_count() == 0 );
- BOOST_TEST( p == nullptr );
- BOOST_TEST( nullptr == p );
- BOOST_TEST( !( p != nullptr ) );
- BOOST_TEST( !( nullptr != p ) );
- }
- return boost::report_errors();
- }
- #else
- int main()
- {
- return 0;
- }
- #endif
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