Avi Bahra wrote:
I'm speaking from memory and it's possible that the situation has changed since 1.39 and the message is now spurious. If so send a small test case which shows that the library has a bug.
Robert Ramey
The case you highlight is correct, and should produce a warning message. However a small variation shown below produces the same message, which I believe is wrong .
This warning message is present in1.39, 1.40 on HPUX and AIX , on Linux/gcc there is _no_ such warning.
class concrete { ... };
class base { ~virtual base(); ... vector<boost::shared_ptr<concrete> > vec_; };
class derived : public base { .... };
BOOST_CLASS_EXPORT(Derived);
Here you will see the same warning message, saying that class 'concrete' should be polymorphic.
I just compiled the following without any warning message (in boost 1.43) #include <vector> #include <boost/serialization/export.hpp> #include <boost/serialization/shared_ptr.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> class concrete { }; class base { std::vector<boost::shared_ptr<concrete> > vec_; public: virtual ~base(); }; class derived : public base { }; template<class Archive> void serialize(Archive &ar, derived & t, const unsigned int version); BOOST_CLASS_EXPORT(derived); Robert Ramey