I had the same problem, i could pin point to the fact that when serialization is in a DLL, the i/oserializer and pointer_i/oserializer are created for each DLL that uses serialization of a class (and in the main exe if there is code there that uses serialization for this class). The singleton are always dll exported, never imported. To make a long story short, in the serialization libs, the method basic_iarchive_impl::register_type(const basic_iserializer & bis) is called several times and may overwrite the bpis_ptr that was set earlier. To fix this, I had to rebuild boost.serialization by and modify basic_iarchive.cpp. I changed the line: coid.bpis_ptr = bis.get_bpis_ptr(); to if (coid.bpis_ptr == 0) coid.bpis_ptr = bis.get_bpis_ptr(); But, there are a few issues with serialization methods when they are implemented inside a dll and called from outside. Guy -- Guy Prémont, D.Sc. Architecte logiciel senior / Senior software architect CM Labs Simulations Inc. http://www.cm-labs.com/ Tel. 514-287-1166 ext. 237
-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users- bounces@lists.boost.org] On Behalf Of rico.cadetg@noser.com Sent: Wednesday, December 08, 2010 11:20 AM To: boost-users@lists.boost.org Subject: [Boost-users] crash in boost serialization (1.44)
Hello,
Ive noticed a crash (accessing a null pointer) inside the boost serialization (version 1.44). I use visual studio 2005, the code to serialize is in a Dll. I have a small visual studio solution that reproduces the crash, I guess it is a bug and should cause a crash in other environments as well.
I have the following classes
INode (Interface) Node (Abstract, derived from INode) LeafNode(derived from Node) TableNode(derived from Node)
The TableNode has a list of INode*, the children. A TableNode itself can be a child of a TableNode.
All classes are inside a Dll and correctly exported (I have no unregistered class exceptions).
If I create a TableNode with some entries including another TableNode and serialize it as an object, I get the crash when trying to deserialize later. If I do the same, but serialize the parent TableNode as a pointer, it works.
I guess the serialization framework does not recognize that a TableNode gets serialized through a pointer and therefore the object tracking does not work correctly.
I can send the example solution if needed.
The crash is in the basic_iarchive.cpp, line 456 (bpis_ptr is null): if(! tracking){ bpis_ptr->load_object_ptr(ar, t, co.file_version); }
Best regards, Rico _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users