| 1 | // |
|---|---|
| 2 | // shared_ptr_rv_pointer_cast_test.cpp |
| 3 | // |
| 4 | // Copyright (c) 2016 Chris Glover |
| 5 | // |
| 6 | // Distributed under the Boost Software License, Version 1.0. |
| 7 | // See accompanying file LICENSE_1_0.txt or copy at |
| 8 | // http://www.boost.org/LICENSE_1_0.txt |
| 9 | // |
| 10 | |
| 11 | #include <boost/shared_ptr.hpp> |
| 12 | #include <boost/core/lightweight_test.hpp> |
| 13 | |
| 14 | #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
| 15 | |
| 16 | struct X |
| 17 | {}; |
| 18 | |
| 19 | struct Y: public X |
| 20 | {}; |
| 21 | |
| 22 | struct U |
| 23 | { |
| 24 | virtual ~U() {} |
| 25 | }; |
| 26 | |
| 27 | struct V: public U |
| 28 | {}; |
| 29 | |
| 30 | struct W : public U |
| 31 | {}; |
| 32 | |
| 33 | int main() |
| 34 | { |
| 35 | { |
| 36 | boost::shared_ptr<X> px(new Y); |
| 37 | |
| 38 | boost::shared_ptr<Y> py1 = boost::static_pointer_cast<Y>(r: px); |
| 39 | boost::shared_ptr<Y> py2 = boost::static_pointer_cast<Y>(r: std::move(px)); |
| 40 | BOOST_TEST(!px); |
| 41 | BOOST_TEST(px.use_count() == 0); |
| 42 | BOOST_TEST(py1.get() == py2.get()); |
| 43 | BOOST_TEST(!(py1 < py2 || py2 < py1)); |
| 44 | BOOST_TEST(py1.use_count() == 2); |
| 45 | BOOST_TEST(py2.use_count() == 2); |
| 46 | } |
| 47 | |
| 48 | { |
| 49 | boost::shared_ptr<int const volatile> px(new int); |
| 50 | |
| 51 | boost::shared_ptr<int> px2 = boost::const_pointer_cast<int>(r: px); |
| 52 | boost::shared_ptr<int> px3 = boost::const_pointer_cast<int>(r: std::move(px)); |
| 53 | BOOST_TEST(!px); |
| 54 | BOOST_TEST(px.use_count() == 0); |
| 55 | BOOST_TEST(px2.get() == px3.get()); |
| 56 | BOOST_TEST(!(px2 < px3 || px2 < px3)); |
| 57 | BOOST_TEST(px2.use_count() == 2); |
| 58 | BOOST_TEST(px3.use_count() == 2); |
| 59 | } |
| 60 | |
| 61 | { |
| 62 | boost::shared_ptr<char> pv(reinterpret_cast<char*>(new Y)); |
| 63 | |
| 64 | boost::shared_ptr<Y> py1 = boost::reinterpret_pointer_cast<Y>(r: pv); |
| 65 | boost::shared_ptr<Y> py2 = boost::reinterpret_pointer_cast<Y>(r: std::move(pv)); |
| 66 | BOOST_TEST(!pv); |
| 67 | BOOST_TEST(pv.use_count() == 0); |
| 68 | BOOST_TEST(py1.get() == py2.get()); |
| 69 | BOOST_TEST(!(py1 < py2 || py2 < py1)); |
| 70 | BOOST_TEST(py1.use_count() == 2); |
| 71 | BOOST_TEST(py2.use_count() == 2); |
| 72 | } |
| 73 | |
| 74 | #if !defined( BOOST_NO_RTTI ) |
| 75 | { |
| 76 | boost::shared_ptr<U> pu(new V); |
| 77 | |
| 78 | boost::shared_ptr<V> pv1 = boost::dynamic_pointer_cast<V>(r: pu); |
| 79 | boost::shared_ptr<V> pv2 = boost::dynamic_pointer_cast<V>(r: std::move(pu)); |
| 80 | BOOST_TEST(!pu); |
| 81 | BOOST_TEST(pu.use_count() == 0); |
| 82 | BOOST_TEST(pv1.get() == pv2.get()); |
| 83 | BOOST_TEST(!(pv1 < pv2 || pv2 < pv1)); |
| 84 | BOOST_TEST(pv1.use_count() == 2); |
| 85 | BOOST_TEST(pv2.use_count() == 2); |
| 86 | } |
| 87 | |
| 88 | { |
| 89 | boost::shared_ptr<U> pu(new V); |
| 90 | boost::shared_ptr<W> pw = boost::dynamic_pointer_cast<W>(r: std::move(pu)); |
| 91 | BOOST_TEST(!pw); |
| 92 | BOOST_TEST(pu); |
| 93 | } |
| 94 | #endif // !defined( BOOST_NO_RTTI ) |
| 95 | |
| 96 | return boost::report_errors(); |
| 97 | } |
| 98 | |
| 99 | #else // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
| 100 | |
| 101 | int main() |
| 102 | { |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | #endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
| 107 |