test_no_rtti is somewhat mis-named. It really tests whether two different extended type info systems can inter-operate as intended. In order to write this test, I need a second one so I made one based on the "exported" identfier. I used that to test / demo that different types with different extended type info systems could inter-operate and it demonstrates that. To run the test, it DOES require that it e compiled with runtime typing. I added this facility as sort of an after thought - of course everything has unseen consequences. So what is really needed is a real effort to verify and perhaps tweak the library to support a different default extended type info system. This would entail. a) Defining an alternative system - such as one based on assigned external names - like "export" does. Or a whole new idea - perhaps based on the recent boost GUID. b) Adding a short explanation to the extended type info section of the documentation c) making a specific test for the new extended type info system. d) Running most or all of the serialization tests with this new extended type info type. If one has a lot of time on his hands, he could also add a couple of new functions to extended type info - like construction of a new instance given the "external type identifier" in order to make a poor man's COM or CORBA (C++ only) equivalent. But of course that's much more ambituous Sorry I can't offer a complete solution. Robert Ramey Ng Pan wrote:

Hi

Background: 1_33_1 Example : boost_1_33_1\libs\serialization\vc6ide\test_no_rtti

I can run the example successfully on Debug mode with no warning and no error.

However, it has several warnings, abnormal operation and memory leak when running on release mode.

The following is the warnings:

d:\barr\serialization\boost\boost_1_33_1_bk\boost\smart_cast.hpp(200): warning C4541: 'dynamic_cast' used on polymorphic type 'polymorphic_base' with /GR-; unpredictable behavior may result d:\barr\serialization\boost\boost_1_33_1_bk\boost\smart_cast.hpp(200): warning C4541: 'dynamic_cast' used on polymorphic type 'polymorphic_base' with /GR-; unpredictable behavior may result ..\..\..\boost\smart_cast.hpp(230) : see reference to function template instantiation 'T boost::smart_cast_impl::pointer<T>::polymorphic::cast(const U *)' being compiled with [ T=const polymorphic_derived2 *, U=type ] ..\..\..\boost\smart_cast.hpp(286) : see reference to function template instantiation 'T boost::smart_cast_impl::pointer<T>::cast(const U *)' being compiled with [ T=const polymorphic_derived2 *, U=type ] ..\..\..\boost\serialization\void_cast.hpp(136) : see reference to function template instantiation 'T boost::smart_cast(U)' being compiled with [ T=const polymorphic_derived2 *, U=const type * ] ..\..\..\boost\serialization\void_cast.hpp(133) : while compiling class-template member function 'const void *boost::serialization::void_cast_detail::void_caster_primitive::downcast(const void *) const' with [ Derived=const polymorphic_derived2, Base=const type ] ..\..\..\boost\serialization\void_cast.hpp(191) : see reference to class template instantiation 'boost::serialization::void_cast_detail::void_caster_primitive' being compiled with [ Derived=const polymorphic_derived2, Base=const type ] ..\..\..\boost\serialization\base_object.hpp(107) : see reference to function template instantiation 'const boost::serialization::void_cast_detail::void_caster &boost::serialization::void_cast_register(const Derived *,const type *)' being compiled with [ Derived=polymorphic_derived2 ] ..\..\..\boost\serialization\base_object.hpp(103) : while compiling class d:\barr\serialization\boost\boost_1_33_1_bk\boost\serialization\extended_type_info_typeid.hpp(92): warning C4541: 'typeid' used on polymorphic type 'polymorphic_derived2' with /GR-; unpredictable behavior may result

Then the following is the console output after invoking the release exe file:

Running 1 test case... unknown location(0): fatal error in "test_main_caller( argc, argv )": std::bad_typeid: Bad read pointer - no RTTI data!

*** errors detected in test suite "Test Program"; see standard output for details Detected memory leaks! Dumping objects -> {263} normal block at 0x00983EA8, 4 bytes long. Data: <D E > 44 D1 45 00 Object dump complete.

What should I do to make the release mode run correctly?

Best regards Barr Ng

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