[UNSOLVED] Possible bug in Root destruction

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Navarre.it
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[UNSOLVED] Possible bug in Root destruction

Post by Navarre.it »

I'm having a crash happening for no apparent reason:

1. Open Demo_Gui sample;
2. Paste these lines at the end of GuiApplication::createScene():

Code: Select all

		Ogre::SceneManager *pSceneMgr = mSceneMgr;
		Ogre::Entity *pkEntity = pSceneMgr->createEntity( "Test278y3b23gh", "ninja.mesh" );
		Ogre::SceneNode *pkNode = pSceneMgr->getRootSceneNode()->createChildSceneNode( "TestNode" );
		pkNode->attachObject( pkEntity );
		Ogre::AnimationState *pkState = pkEntity->getAnimationState("Walk");
		pkState->setEnabled(true);
3. Compile & execute;
4. Quit & Crash.

Why is this :?:

@Administrator: I think my former account (Navarre) is considered inactive: can you reactivate it?
Last edited by Navarre.it on Mon Feb 14, 2005 8:42 pm, edited 2 times in total.
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monster
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Post by monster »

Where exactly (use the debugger) does it crash?

My money's on pkEntity not having a "Walk" animation state, so pkState is null when you try to call setEnabled(true) on it.
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Navarre.it
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Post by Navarre.it »

Hi Monster,
I'm now recompiling the whole lib with STLport to make sure nothing strange is happening. Thanks for the prompt reply, too.
However, I had crashes during the destruction of Root, in particular the destruction of Vertex Buffers. Moreover, the mesh has a Walk state (it's the ninja or robot); and I had crashes even without the animstate code (just entity attachment seems to cause this.
However I invite you to follow the steps I detailed above to see if you have this crash too: can it possibly be a bug?
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monster
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Post by monster »

can it possibly be a bug?
Possibly. However I invite you to use your debugger and obtain us a precise location of the crash and a call stack at that point, together with the values of any relevant variables.
;)
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Post by Navarre.it »

Yes I forgot to say that upon rebuilding completion I would have posted those informations, sorry :oops:
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Post by Navarre.it »

I have deleted the whole ogrenew folder, rebuilt stlport anew, rebuilt ogre anew; all the samples run correctly except demo_gui which say that it can't find the right entry point in OgreMain_d.dll (all other samples does). Does CEGUI has something to set up when STLport is included?

#Edit: Forgot to mention that I'm using OgreRC1.
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Post by Navarre.it »

I reverted to OgreRC1 built without STLport, with VC7.1.
The crashOnExit issue continues showing up.

Here follows a detailed description:

To cause the error, open the Gui sample in Samples directory and paste these lines at the end of GuiApplication::createScene():

Code: Select all

		Ogre::SceneManager *pSceneMgr = mSceneMgr;
		Ogre::Entity *pkEntity = pSceneMgr->createEntity("TestEntity", "robot.mesh");
		Ogre::SceneNode *pkNode = pSceneMgr->getRootSceneNode()->createChildSceneNode("TestNode");
		pkNode->attachObject(pkEntity);
Run & close the application, I have a crash:

Code: Select all

Eccezione non gestita a 0x10419beb (OgreMain_d.dll) in Demo_Gui.exe: 0xC0000005: Violazione di accesso nella lettura del percorso 0x00000004.
which in english sounds like:

Code: Select all

Unmanaged exception a 0x10419beb (OgreMain_d.dll) in Demo_Gui.exe: 0xC0000005: Access violation in reading path 0x00000004.
Call stack is:

Code: Select all

>	OgreMain_d.dll!std::_Tree<std::_Tset_traits<Ogre::HardwareVertexBuffer *,std::less<Ogre::HardwareVertexBuffer *>,std::allocator<Ogre::HardwareVertexBuffer *>,0> >::_Lbound(Ogre::HardwareVertexBuffer * const & _Keyval=0x0364a178)  Riga 988 + 0x8	C++
 	OgreMain_d.dll!std::_Tree<std::_Tset_traits<Ogre::HardwareVertexBuffer *,std::less<Ogre::HardwareVertexBuffer *>,std::allocator<Ogre::HardwareVertexBuffer *>,0> >::lower_bound(Ogre::HardwareVertexBuffer * const & _Keyval=0x0364a178)  Riga 810 + 0xc	C++
 	OgreMain_d.dll!std::_Tree<std::_Tset_traits<Ogre::HardwareVertexBuffer *,std::less<Ogre::HardwareVertexBuffer *>,std::allocator<Ogre::HardwareVertexBuffer *>,0> >::find(Ogre::HardwareVertexBuffer * const & _Keyval=0x0364a178)  Riga 790	C++
 	OgreMain_d.dll!Ogre::HardwareBufferManager::_notifyVertexBufferDestroyed(Ogre::HardwareVertexBuffer * buf=0x0364a178)  Riga 279	C++
 	OgreMain_d.dll!Ogre::HardwareVertexBuffer::~HardwareVertexBuffer()  Riga 62	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9HardwareVertexBuffer::~D3D9HardwareVertexBuffer()  Riga 66 + 0x12	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9HardwareVertexBuffer::`scalar deleting destructor'()  + 0x2b	C++
 	OgreMain_d.dll!Ogre::SharedPtr<Ogre::HardwareVertexBuffer>::destroy()  Riga 149 + 0x6b	C++
 	OgreMain_d.dll!Ogre::SharedPtr<Ogre::HardwareVertexBuffer>::release()  Riga 140 + 0xd	C++
 	OgreMain_d.dll!Ogre::SharedPtr<Ogre::HardwareVertexBuffer>::~SharedPtr<Ogre::HardwareVertexBuffer>()  Riga 89	C++
 	OgreMain_d.dll!Ogre::HardwareVertexBufferSharedPtr::~HardwareVertexBufferSharedPtr()  + 0x2b	C++
 	OgreMain_d.dll!Ogre::HardwareBufferManager::VertexBufferLicense::~VertexBufferLicense()  + 0x2e	C++
 	OgreMain_d.dll!Ogre::HardwareBufferManager::VertexBufferLicense::`scalar deleting destructor'()  + 0x2b	C++
 	OgreMain_d.dll!std::_Destroy<Ogre::HardwareBufferManager::VertexBufferLicense>(Ogre::HardwareBufferManager::VertexBufferLicense * _Ptr=0x0360f6e0)  Riga 50	C++
 	OgreMain_d.dll!std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense>::destroy(Ogre::HardwareBufferManager::VertexBufferLicense * _Ptr=0x0360f6e0)  Riga 152 + 0x9	C++
 	OgreMain_d.dll!std::_Destroy_range<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >(Ogre::HardwareBufferManager::VertexBufferLicense * _First=0x0360f6e0, Ogre::HardwareBufferManager::VertexBufferLicense * _Last=0x0360f6f8, std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> & _Al={...}, std::_Nonscalar_ptr_iterator_tag __formal={...})  Riga 226 + 0xc	C++
 	OgreMain_d.dll!std::_Destroy_range<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >(Ogre::HardwareBufferManager::VertexBufferLicense * _First=0x0360f6e0, Ogre::HardwareBufferManager::VertexBufferLicense * _Last=0x0360f6f8, std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> & _Al={...})  Riga 217 + 0x2e	C++
 	OgreMain_d.dll!std::vector<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >::_Destroy(Ogre::HardwareBufferManager::VertexBufferLicense * _First=0x0360f6e0, Ogre::HardwareBufferManager::VertexBufferLicense * _Last=0x0360f6f8)  Riga 787 + 0x11	C++
 	OgreMain_d.dll!std::vector<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >::_Tidy()  Riga 795	C++
 	OgreMain_d.dll!std::vector<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >::~vector<Ogre::HardwareBufferManager::VertexBufferLicense,std::allocator<Ogre::HardwareBufferManager::VertexBufferLicense> >()  Riga 389	C++
 	OgreMain_d.dll!Ogre::HardwareBufferManager::~HardwareBufferManager()  Riga 61 + 0x2d	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9HardwareBufferManager::~D3D9HardwareBufferManager()  Riga 41 + 0x12	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9HardwareBufferManager::`scalar deleting destructor'()  + 0x2b	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9RenderSystem::~D3D9RenderSystem()  Riga 128 + 0x98	C++
 	RenderSystem_Direct3D9.dll!Ogre::D3D9RenderSystem::`scalar deleting destructor'()  + 0x2b	C++
 	RenderSystem_Direct3D9.dll!dllStopPlugin()  Riga 50 + 0x84	C++
 	OgreMain_d.dll!Ogre::Root::unloadPlugins()  Riga 693 + 0x5	C++
 	OgreMain_d.dll!Ogre::Root::~Root()  Riga 264	C++
 	Demo_Gui.exe!Ogre::Root::`scalar deleting destructor'()  + 0x2e	C++
 	Demo_Gui.exe!ExampleApplication::~ExampleApplication()  Riga 49 + 0x76	C++
 	Demo_Gui.exe!GuiApplication::~GuiApplication()  Riga 197 + 0x1e	C++
 	Demo_Gui.exe!WinMain(HINSTANCE__ * hInst=0x00400000, HINSTANCE__ * __formal=0x00000000, char * strCmdLine=0x00141f1d, HINSTANCE__ * __formal=0x00000000)  Riga 588 + 0x19	C++
 	Demo_Gui.exe!WinMainCRTStartup()  Riga 390 + 0x39	C
 	kernel32.dll!7c816d4f() 	
 	ntdll.dll!7c925b4f() 	
 	kernel32.dll!7c8399f3()
I can reproduce this bug at will, so please ask for further informations if you need them! Isn't it very strange?
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Navarre.it
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Post by Navarre.it »

I still couldn't figure out what's wrong in these 4 lines of code. If they're correct, this can be a really serious issue! Anyone?
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Post by sinbad »

Those 4 lines work perfectly for me, sorry. No-one else is reporting any issues at this stage.
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Post by Navarre.it »

I tried my binary on another PC (different HW) and it still crashes on exit, so it can't even be some driver issue. These 4 lines work for Sinbad (and for anyone else I suppose) so it *must* be something with my libs/windows installation/overall setup. :?

I'll keep you posted...
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Post by spookyboo »

Which stlport version do you use? I was using 4.5.3 but this doesn't work with the GUI demo (it only complained about the .dll though, I didn't have the problems you are describing). Maybe you should build Ogre with the 4.6.2 version.
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Post by Robomaniac »

GUI demo works fine for me!
phear hingo

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Post by Navarre.it »

I tried to compile OGRE with STLPort 4.6.2 and everything BUT the GUIDemo compiled fine.
Now I'm without STLPort (GUIDemo compiles), and the above results refer to this case. Even if compiling, it crashes on exit. By now I can't reinstall my whole system, so I'll have to wait to solve this issue! Thanks anyway :!:
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Post by _lkoikm »

it crashes all the times?
if it is so try to disable some lines of code to trace if some sub part causes the problem ... that would be handy.
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Post by Navarre.it »

Poorly, it crashes all the times; moreover, the crash does not happen on those lines but just when I shutdown the application. Specifically, it's the entity attachment the reason of these crashes (if I don't attach the entity to the node, no crash happens on exit).
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Post by sinbad »

Argh, I'm a fool. The reason the people here aren't seeing this is because this was a bug I fixed very soon after RC1 - I don't think it manifested itself quite like this, but I'm pretty sure it's the same thing. If you update to the latest CVS version you probably won't have the problem anymore.
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Post by Navarre.it »

I'll let you know as soon as I can get my hands on it. Thank your very much for the support! :o
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Post by sinbad »

Make sure you update to the 'v1-0' branch which contains all the bugfixes, I haven't merged to HEAD yet.
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