forked from boostorg/smart_ptr
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
//
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// shared_pointer_reinterpret_pointer_cast_test.cpp
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//
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// Copyright (c) 2016 Chris Glover
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//
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// Distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#include <boost/shared_ptr.hpp>
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#include <boost/detail/lightweight_test.hpp>
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struct X
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{};
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int main()
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{
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{
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boost::shared_ptr<char> pc;
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boost::shared_ptr<int> pi = boost::reinterpret_pointer_cast<int>(pc);
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BOOST_TEST(pi.get() == 0);
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boost::shared_ptr<X> px = boost::reinterpret_pointer_cast<X>(pc);
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BOOST_TEST(px.get() == 0);
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}
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{
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boost::shared_ptr<int> pi(new int);
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boost::shared_ptr<char> pc = boost::reinterpret_pointer_cast<char>(pi);
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boost::shared_ptr<int> pi2 = boost::reinterpret_pointer_cast<int>(pc);
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BOOST_TEST(pi.get() == pi2.get());
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BOOST_TEST(!(pi < pi2 || pi2 < pi));
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BOOST_TEST(pi.use_count() == 3);
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BOOST_TEST(pc.use_count() == 3);
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BOOST_TEST(pi2.use_count() == 3);
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}
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{
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boost::shared_ptr<X> px(new X);
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boost::shared_ptr<char> pc = boost::reinterpret_pointer_cast<char>(px);
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boost::shared_ptr<X> px2 = boost::reinterpret_pointer_cast<X>(pc);
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BOOST_TEST(px.get() == px2.get());
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BOOST_TEST(!(px < px2 || px2 < px));
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BOOST_TEST(px.use_count() == 3);
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BOOST_TEST(pc.use_count() == 3);
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BOOST_TEST(px2.use_count() == 3);
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}
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return boost::report_errors();
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}
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