[Boost-users] [serialization] exporting class

From: Federico Feller (fliafeller_at_[hidden])
Date: 2006-03-03 13:53:22

Hi. First of all I want to thank the previous answers
for my mails. They were very helpfull
But I still have problems using serialization. In
particular, I cant seem to find the correct way to
register a subclass with its base class so that
serliaziig through a pointer works fine. 
I dont know exactly where to place the
BOOST_CLASS_EXPORT macros. I put them in the cpp file
where all the hierarchy classes are defined, but this
arises the following problem (for example):
boost::serialization::void_cast_detail::void_cast_primitive<const
CompositeFieldFilter, const FieldFilter>::instance is
defined in both modules... (after that it mentions two
modules where serialization of FieldFilter* is done)

This is actually a warning for the Borland C++
compiler, but the compiled program violates the
memory. Here is the output of the CodeGuard log:

Error 00001. 0x400000 (Thread 0x0FC0):
Exception 0xC0000005: Access violation at 0x4.
Call Tree:
   0x006625DC(=TMSClientProject.exe:0x01:2615DC)
../src/extended_type_info.cpp#264
   0x00662697(=TMSClientProject.exe:0x01:261697)
../src/extended_type_info.cpp#280
   0x00667FA8(=TMSClientProject.exe:0x01:266FA8)
../src/void_cast.cpp#41
   0x00668763(=TMSClientProject.exe:0x01:267763)
C:\Archivos de
programa\Borland\CBuilder6\Include\stl/_tree.c#402
   0x0066701D(=TMSClientProject.exe:0x01:26601D)
C:\Archivos de
programa\Borland\CBuilder6\Include\stl/_set.h#137
   0x00666500(=TMSClientProject.exe:0x01:265500)
../src/void_cast.cpp#98

I gues somehow the relation between the base class
FieldFilter and its subclass FieldFilterComposite is
registered twice. But i can't find why this is done,
because of my lack of knowledge of how the library
works in the inside.
If someone could help me with this i would really
appreciate

Thanks,
Federico

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