[Boost-users] [serialization] Polymorphic serialization with polymorphic archives problem...

Subject: [Boost-users] [serialization] Polymorphic serialization with polymorphic archives problem...
From: Bogdan (bogdan.indy_at_[hidden])
Date: 2010-02-20 18:18:38

Hi all,

I am unable to use the following functionality in boost 1.42 built with
Visual Studio 2008:

- serialize/deserialize a derived class via a base class pointer using
polymorphic archives.
- the class serialization is implemented in a DLL using a base polymorphic
archive.
- the actual serialization is performed in a separate executable (linked
with the DLL above); in that executable I use a polymorphic text archive.

The documentation states this scenario is legitimate; however none of the
tests shipped with boost demonstrates it (there are examples either about
polymorphic classes or polymorphic archives but no test combining both).

The example proving my point is a variation of the test using
test_dll_exported.cpp and polymorphic_derived2.cpp where I removed the
template-based archives defeating the purpose of polymorphic archives.
My example throws an exception before main(), complaining the serializers
try to register twice with the archive map singleton of the polymorphic base
class.

I described the same issue  in the thread "[serialization] Can one
deserialize a derived classes via pointers to the base class using
polymorphic archives in a DLL context?" I posted in
gmane.comp.lib.boost.devel where I provided more implementation details.
Robert Ramey has graciously replied with a series of suggestions;
unfortunately my example seems to have fulfilled all the conditions he
mentioned.

So, my question is: has anyone been able to run successfully a scenario
similar to the one I described?

Thank you,

Bogdan

============================================================================
======

I am enclosing a bare-bone example containing 8 files in two project files
plus one solution file.

My environment setup contains:

_CL_=/D_HAS_ITERATOR_DEBUGGING#0 /D_SECURE_SCL#0 /wd4996 /wd4503
/DBOOST_ALL_NO_LIB
BOOST_HOME=C:\_APP_\boost_1_42_0

Boost header files are installed under %BOOST_HOME%\include while the
libraries are installed under %BOOST_HOME%\lib.
I used Boost libraries (multi-threaded DLL versions) built with no automatic
dependencies (note /DBOOST_ALL_NO_LIB above).
Their names are boost_serialization-mt.lib and boost_serialization-mt-gd.lib
for Release/Debug configurations, respectively.

The PropertyPages/ConfigurationProperties/Debugging/Environment contains:
PATH=$(BOOST_HOME)\lib;$(PATH) used while debugging.