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Destructor crash

Rakkar2 · 2007-04-05T09:00:47

AngelScript 2.8.0a is crashing after it leaves the destructor of my C++ class ScriptObject. I don't know why. Base class: ScriptObject::ScriptObject() { scriptRefCount=1; scriptContext = ScriptManager::engine->CreateContext(); } ScriptObject::~ScriptObject() { if (scriptContext) scriptContext->Release(); } void ScriptObject::ScriptAddRef(void) { ++scriptRefCount; } void ScriptObject::ScriptReleaseRef(void) { if (--scriptRefCount<=0) { delete this; } } Base class registration: ScriptManager::engine->RegisterObjectType(className, classSize, supportedOps); ScriptManager::engine->RegisterObjectBehaviour(className, asBEHAVE_ADDREF, "void f()", asMETHOD(ScriptObject, ScriptAddRef),asCALL_THISCALL); ScriptManager::engine->RegisterObjectBehaviour(className, asBEHAVE_RELEASE, "void f()", asMETHOD(ScriptObject, ScriptReleaseRef),asCALL_THISCALL); Derived class: #include "OgreVector3.h" #include "ScriptObject.h" class ScriptVector3 : public Ogre::Vector3, public ScriptObject { public: static void RegisterScriptClass(void); }; Derived class code: void ScriptVector3_Construct(ScriptVector3 *o) { new(o) ScriptVector3(); } void ScriptVector3_ConstructFloat3(const float _x, const float _y, const float _z, ScriptVector3 *o) { ScriptVector3 *obj = new(o) ScriptVector3(); obj->x=_x; obj->y=_y; obj->z=_z; } void ScriptVector3_Destruct(ScriptVector3 *o) { o->~ScriptVector3(); } Derived class registration: ScriptObject::RegisterScriptClass("Vector3", sizeof(Vector3), asOBJ_CLASS_CA); ScriptManager::engine->RegisterObjectBehaviour("Vector3", asBEHAVE_CONSTRUCT, "void f()", asFUNCTION(ScriptVector3_Construct), asCALL_CDECL_OBJLAST); ScriptManager::engine->RegisterObjectBehaviour("Vector3", asBEHAVE_CONSTRUCT, "void f(float, float, float)", asFUNCTIONPR(ScriptVector3_ConstructFloat3, (const float, const float, const float), void), asCALL_CDECL_OBJLAST); Script: void ModuleUpdate(GMScript &this, uint curTimeMS, uint elapsedTimeMS) { Vector3 vec(1,2,3.5); } Behavior: ScriptVector3_ConstructFloat3 is called ok and the values are as in script. Immediately after, because the Vector3 leaves the scope of the function, it calls ScriptObject::ScriptReleaseRef The destructor is called,scriptContext is released. All the addresses are correct. After it leaves the Destructor, it crashes with the message: Windows has triggered a breakpoint in GalacticMelee.exe This may be due to a corruption of the heap, and indicates a bug in GalacticMelee.exe or any of the DLLs it has loaded I'm linking with a debug DLL with debug info. Here's the relevant callstack: GalacticMelee.exe!ScriptObject::~ScriptObject() Line 16 + 0x10 bytes C++ GalacticMelee.exe!ScriptVector3::`scalar deleting destructor'() + 0x3c bytes C++ GalacticMelee.exe!ScriptObject::ScriptReleaseRef() Line 25 + 0x34 bytes C++ angelscriptDebug.dll!asCScriptEngine::CallObjectMethod(void * obj=0x10d9eac0, asSSystemFunctionInterface * i=0x0b43e340, asCScriptFunction * s=0x0b43e3b0) Line 2487 + 0x8 bytes C++ angelscriptDebug.dll!asCScriptEngine::CallObjectMethod(void * obj=0x10d9eac0, int func=57) Line 2460 C++ angelscriptDebug.dll!asCContext::ExecuteNext() Line 1909 C++ angelscriptDebug.dll!asCContext::Execute() Line 918 + 0x8 bytes C++ > GalacticMelee.exe!ScriptObject::ExecuteContext() Line 31 + 0x17 bytes C++ [Edited by - Rakkar2 on April 3, 2007 10:53:35 PM]

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Started by Rakkar2 April 03, 2007 04:10 PM

9 comments, last by WitchLord 17 years, 3 months ago

WitchLord

4,838

April 05, 2007 09:00 AM

Quote: Original post by Rakkar2
If I do that is refCount going to be incorrectly shallow copied with the assignment operators?

Operations that need to update the refCount must be wrapped/overloaded to take care of that. All others can use the original class directly.

If you register the assignment operator with the function address from Ogre::Vector3, then it will only copy the Vector3 value and leave the refCount alone. Which is exactly what you want.

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Destructor crash

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