Need Help: Destuctor Crash

[pasdVn]

Hey guys,

need the help of one of you pros one more time ;-) It is probably more a generic programming problem. That is why I post it here.

Following szenario: I want to access the class PetAI from an extern scripting project (to be more specific: scriptdev2). I use the following code (just a minimal example):

/* Copyright (C) 2006 - 2010 ScriptDev2 <https://scriptdev2.svn.sourceforge.net/>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* ScriptData
SDName: Pet_Scripts
SD%Complete: ??
SDComment: Here is the place for scripted AI for guardian and mini pets.
SDCategory: Pets
EndScriptData */

#include "precompiled.h"
#include "PetAI.h"

struct MANGOS_DLL_DECL pet_simple_guardianAI : public PetAI
{
   pet_simple_guardianAI(Creature* pCreature): PetAI(pCreature)
   {
   }
};


CreatureAI* GetAI_pet_simple_guardian(Creature* pCreature)
{
   if (pCreature->isPet())
       return new pet_simple_guardianAI(pCreature);
   else
       return NULL;
}

void AddSC_pets()
{
   Script *newscript;

   newscript = new Script;
   newscript->Name = "pet_simple_guardian";
   newscript->GetAI = &GetAI_pet_simple_guardian;
   newscript->RegisterSelf();
}

I ofc also added the declaration and call in ScriptLoader.cpp and defined PetAI as MANGOS_DLL_SPEC to get acess from the extern dll.

The Problem: Code compiles and works until the pet (guardian pet) get's delete (and thus the AI). I always a get a crash at the destructor which I can not really understand.

> msvcr90d.dll!operator delete(void * pUserData=0x6eaebee0) Line 52 + 0x51 bytes C++

mangosscript.dll!std::allocator<std::_Tree_nod<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::_Node>::Deallocate(std::_Tree_nod<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::_Node * _Ptr=0x6eaebee0, unsigned int __formal=1) Line 140 + 0x9 bytes C++

mangosscript.dll!std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::_Erase(std::_Tree_nod<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::_Node * _Rootnode=0x6eaebee0) Line 1173 C++

mangosscript.dll!std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::clear() Line 972 C++

mangosscript.dll!std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::erase(std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::const_iterator _First=27, std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::const_iterator _Last=1065353216) Line 938 C++

mangosscript.dll!std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::_Tidy() Line 1421 + 0xaa bytes C++

mangosscript.dll!std::_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >::~_Tree<std::_Tset_traits<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64>,0> >() Line 541 C++

mangosscript.dll!std::set<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64> >::~set<unsigned __int64,std::less<unsigned __int64>,std::allocator<unsigned __int64> >() + 0x2b bytes C++

mangosscript.dll!PetAI::~PetAI() + 0x54 bytes C++

mangosscript.dll!pet_simple_guardianAI::~pet_simple_guardianAI() + 0x2b bytes C++

mangosscript.dll!pet_simple_guardianAI::`scalar deleting destructor'() + 0x2b bytes C++

mangosd.exe!Creature::~Creature() Line 149 + 0x28 bytes C++

mangosd.exe!Pet::~Pet() Line 59 + 0x45 bytes C++

mangosd.exe!Pet::`scalar deleting destructor'() + 0x16 bytes C++

mangosd.exe!Map::DeleteFromWorld<Creature>(Creature * obj=0x6e8a4000) Line 248 + 0x22 bytes C++

mangosd.exe!Map::Remove<Creature>(Creature * obj=0x6e8a4000, bool remove=true) Line 733 C++

mangosd.exe!Map::RemoveAllObjectsInRemoveList() Line 1521 C++

mangosd.exe!MapManager::RemoveAllObjectsInRemoveList() Line 276 + 0x1d bytes C++

mangosd.exe!World::Update(unsigned int diff=141) Line 1553 C++

mangosd.exe!WorldRunnable::run() Line 61 C++

mangosd.exe!ACE_Based::Thread::ThreadTask(void * param=0x72085900) Line 187 + 0xf bytes C++

ACEd.dll!ACE_OS_Thread_Adapter::invoke() Line 90 + 0x9 bytes C++

ACEd.dll!ace_thread_adapter(void * args=0x0bc319d8) Line 124 + 0xf bytes C++

msvcr90d.dll!_callthreadstartex() Line 348 + 0xf bytes C

msvcr90d.dll!_threadstartex(void * ptd=0x0bc35988) Line 331 C

kernel32.dll!76751194()

[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]

ntdll.dll!77cab495()

ntdll.dll!77cab468()

I guess, that is somehow to do with the dll export (I do not really understand that much of those things) as the code runs _without_ problems at linux.

I already tried various things, as definig the destructor explicit in PetAI/ pet_simple_guardianAI, make it virtual (althoug it anway only is called via CreatureAI pointers), using a class instead of a struct etc.

Did not have success until now. Always the same crash.

Hope anybody of you can give me a hint.

Greetings pasdVn

Edit: Omg. Finally I got it work! I defined an empty destructor for petAI, but not in the header, but in the cpp file. Probably he had problems, when calling the default destructor of a mangos-own function (bt: mangosscript.dll!PetAI::~PetAI() + 0x54 bytes C++ ).