I took http://lists.boost.org/boost-users/att-26574/test_serialize.cpp and modified it by changing #include <boost/serialization/is_abstract.hpp> to #include <boost/type_traits/is_abstract.hpp>
Try using boost/serialization/assume_abstract.hpp Robert Ramey Dan Thomas wrote:
If I use gcc 3.2.3 (Linux) and Boost 1.35.0 to compile the example program at... http://lists.boost.org/boost-users/att-26574/test_serialize.cpp ...I get extensive compile errors which I can summarise as: <path>/boost_1_35_0/boost/serialization/export.hpp:125: `instantiate' is not a member of type
`boost::archive::detail::ptr_serialization_support<boost::archive::text_iarchive, base>'
These errors do not occur if I use either Boost 1.33.0 or Microsoft Visual Studio.
The fact that the test program's base class is abstract seems to be central to the problem. The error is eliminated if I remove the BOOST_IS_ABSTRACT(base) statement from the test program. Doing so naturally causes other problems but these are in turn fixed by making "base" concrete i.e. by removing the =0 qualifier from base::get_id() and providing an implementation.
It looks as if code in Boost 1.35.0 expects all classes to provide an instantiate method, even though the method is not in fact present on classes that have been marked as abstract. Is there any chance of a fix or work-around?
I"m not sure what the problem is here.
In 1.36 (and the trunk) we've made some alterations and fixed things in this area.
I've just downloaded the head version of 1.36 and tried that but hit very similar problems. In more detail...
I took http://lists.boost.org/boost-users/att-26574/test_serialize.cpp and modified it by changing #include <boost/serialization/is_abstract.hpp> to #include <boost/type_traits/is_abstract.hpp> And BOOST_IS_ABSTRACT(base); to BOOST_SERIALIZATION_ASSUME_ABSTRACT(base);
The result compiles OK with MSVC 8.0 but generates two errors on gcc 3.2.3: <path>/boost_1_36_0/boost/serialization/export.hpp:98: `instantiate' is not a member of type
`boost::archive::detail::ptr_serialization_support<boost::archive::text_oarchive, derived>' <path>/boost_1_36_0/boost/serialization/export.hpp:98: `instantiate' is not a member of type
`boost::archive::detail::ptr_serialization_support<boost::archive::text_iarchive, derived>' In other words, the same error as before but affecting different classes. I should also say that although I am using a stock test program to demonstrate this problem, it also affects the real code that I am writing - the issue is not just academic.
Thanks
Dan