1 | #include <cassert>
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2 | #include <fstream>
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3 | #include <boost/shared_ptr.hpp>
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4 | #include <boost/weak_ptr.hpp>
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5 | #include <boost/serialization/serialization.hpp>
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6 | #include <boost/archive/xml_oarchive.hpp>
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7 | #include <boost/archive/xml_iarchive.hpp>
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8 | #include <boost/serialization/nvp.hpp>
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9 | #include <boost/serialization/export.hpp>
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10 | #include <boost/serialization/shared_ptr.hpp>
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11 | #include <boost/serialization/weak_ptr.hpp>
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12 |
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13 | struct Base1 {
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14 | virtual ~Base1() {}
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15 | // serialize
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16 | friend class boost::serialization::access;
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17 | template<class Archive>
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18 | void serialize(Archive & /*ar*/, const unsigned int /* file_version */) {}
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19 | };
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20 |
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21 | BOOST_CLASS_EXPORT(Base1)
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22 |
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23 | struct Base2 {
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24 | virtual ~Base2() {}
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25 | // serialize
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26 | friend class boost::serialization::access;
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27 | template<class Archive>
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28 | void serialize(Archive & /*ar*/, const unsigned int /* file_version */) {}
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29 | };
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30 |
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31 | BOOST_CLASS_EXPORT(Base2)
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32 |
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33 | struct Sub:public Base1, public Base2 {
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34 | virtual ~Sub() {}
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35 | boost::weak_ptr<Sub> wp_;
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36 |
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37 | // serialize
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38 | friend class boost::serialization::access;
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39 | template<class Archive>
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40 | void serialize(Archive &ar, const unsigned int /* file_version */)
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41 | {
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42 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Base1);
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43 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Base2);
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44 | ar & BOOST_SERIALIZATION_NVP(wp_); // *1
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45 | }
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46 | };
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47 |
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48 | BOOST_CLASS_EXPORT(Sub)
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49 |
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50 | int main()
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51 | {
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52 | {
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53 | // serialize
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54 | boost::shared_ptr<Sub> s(new Sub);
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55 | boost::shared_ptr<Base2> pb2(s);
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56 | s->wp_ = s; // set weak_ptr. If not set, deserialize success.
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57 | std::ofstream ofs("output.xml");
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58 | assert(ofs);
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59 | boost::archive::xml_oarchive oa(ofs);
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60 | oa << boost::serialization::make_nvp("Base2", pb2);
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61 | }
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62 | {
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63 | // de-serialize
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64 | std::ifstream ifs("output.xml");
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65 | assert(ifs);
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66 | boost::archive::xml_iarchive ia(ifs);
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67 | boost::shared_ptr<Base2> pb2;
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68 | ia >> boost::serialization::make_nvp("Base2", pb2);
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69 | // check
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70 | // pb2's vptr is broken.
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71 | assert(dynamic_cast<Sub *>(pb2.get()));
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72 | }
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73 | }
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