Re: [Boost-users] problem for serialization to build project [no rtti]on release mode

10 May 2007

      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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