Execution bug - access violation

yoda

20-07-2006 10:30:11

Hi,
I have created a program which use oFusion. I have a bug due to TinyXML and i don't understand why. I have made two programs to test oFusion, the first one works fine, the second bugs.



int main(int a , char ** b)

{

  try{

    Ogre::Root* mRoot = new Ogre::Root("plugins.cfg","ogre.cfg","ogre.log");

    Ogre::GLRenderSystem* mRender = new Ogre::GLRenderSystem(); 

    mRoot->setRenderSystem( mRender );

    mRoot->initialise(false);

    Ogre::RenderWindow* mWindow = mRoot->createRenderWindow("Main", 800, 600, false );

    Ogre::ConfigFile cf;

    cf.load("resources.cfg");    

    Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();    

    while (seci.hasMoreElements())

    {

	  cout << "a-" ;

      Ogre::String secName = seci.peekNextKey();

      Ogre::ConfigFile::SettingsMultiMap* settings = seci.getNext();

      for (Ogre::ConfigFile::SettingsMultiMap::iterator i = settings->begin();

           i != settings->end(); ++i)

      {

        cout << "b-" ;

        Ogre::String typeName = i->first;

        Ogre::String archName = i->second;

        Ogre::ResourceGroupManager::getSingleton().addResourceLocation(archName, typeName, secName);

      }

    }

    Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup(Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); 

    Ogre::ResourceGroupManager::getSingleton().loadResourceGroup(Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME ); 

    Ogre::SceneManager* mSceneManager = mRoot->createSceneManager(Ogre::ST_GENERIC,"sceneManager");

    OSMScene oScene = OSMScene( mSceneManager, mWindow);

    oSceneCallback oe_Callback;

    oScene.initialise("scene.osm", &oe_Callback); 

    ...



int main(int a , char ** b)

{

  try{

    Ogre::Root* mRoot = new Ogre::Root("plugins.cfg","ogre.cfg","ogre.log");

    Ogre::GLRenderSystem* mRender = new Ogre::GLRenderSystem(); 

    mRoot->setRenderSystem( mRender );

    mRoot->initialise(false);

    Ogre::AlterWin32* mWindow = new Ogre::AlterWin32();

    mRender->attachRenderTarget( *mWindow );

    Ogre::HardwareBufferManager* mHardwareBufferManager = new     Ogre::DefaultHardwareBufferManager();

    Ogre::Win32GLSupport* support = new Ogre::Win32GLSupport();

    Ogre::TextureManager* mTextureManager = new Ogre::GLTextureManager(*support);

    Ogre::ConfigFile cf;

    cf.load("resources.cfg");    

    Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();    

    while (seci.hasMoreElements())

    {

	  cout << "a-" ;

      Ogre::String secName = seci.peekNextKey();

      Ogre::ConfigFile::SettingsMultiMap* settings = seci.getNext();

      for (Ogre::ConfigFile::SettingsMultiMap::iterator i = settings->begin();

           i != settings->end(); ++i)

      {

        cout << "b-" ;

        Ogre::String typeName = i->first;

        Ogre::String archName = i->second;

        Ogre::ResourceGroupManager::getSingleton().addResourceLocation(archName, typeName, secName);

      }

    }

    Ogre::ResourceGroupManager::getSingleton().initialiseResourceGroup(Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); 

    Ogre::ResourceGroupManager::getSingleton().loadResourceGroup(Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME ); 



    Ogre::SceneManager* mSceneManager = mRoot->createSceneManager(Ogre::ST_GENERIC,"sceneManager");

    OSMScene oScene = OSMScene( mSceneManager, mWindow);

    oSceneCallback oe_Callback;

    oScene.initialise("scene.osm", &oe_Callback); 

    ...

The AlterWin32 class is one of mine, and it didn't do anything. I have located the part of the code which crashs my program:



returnNode = new TiXmlElement( "" ); in the TiXmlNode::Identify function in the TinyXMLParser.cpp file

value = _value; int the TiXmlElement::TiXmlElement contructeur in the tinyXMLL.cpp file.

I have the bug:



main.exe caused an Access Violation at location 641a3734 in module libstdc++.dll Reading from location 3f800000.



Registers:

eax=00000000 ebx=00000014 ecx=641ca5b8 edx=3f800000 esi=00000004 edi=0022fbf0

eip=641a3734 esp=0022fb60 ebp=0022fb78 iopl=0         nv up ei pl nz na po nc

cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00000206



Call stack:

641A3734  libstdc++.dll:641A3734  _ZNSt24__default_alloc_templateILb1ELi0EE8allocateEj

64198285  libstdc++.dll:64198285  _ZNSs4_Rep9_S_createEjRKSaIcE

64199608  libstdc++.dll:64199608  _ZNSs9_M_mutateEjjj

64197ED1  libstdc++.dll:64197ED1  _ZNSs15_M_replace_safeIPKcEERSsN9__gnu_cxx17__normal_iteratorIPcSsEES6_T_S7_

64199F2B  libstdc++.dll:64199F2B  _ZNSsaSEPKc

0040CD7E  main.exe:0040CD7E

0041046D  main.exe:0041046D

0040FE80  main.exe:0040FE80

0040251D  main.exe:0040251D

0040B325  main.exe:0040B325

00401237  main.exe:00401237

00401288  main.exe:00401288

7C816D4F  kernel32.dll:7C816D4F  RegisterWaitForInputIdle

Could you help me?