I'm experiencing a crash when calling native functions from script, which are precompiled by the way.

This is the function causing all of the trouble:

r = pEngine->RegisterGlobalFunction( "void DrawSprite( int,int,PointF)", asMETHOD(Renderer, DrawSprite), asCALL_THISCALL_ASGLOBAL, pGm->GetRenderer()); assert(r >= 0);

PointF is defined like so:

class PointF
{
public:
    PointF();
    PointF( float _x, float _y);
    PointF( const PointF &other);

    void Set( float _x, float _y);
    void SetX(float _x);
    void SetY(float _y);

    float GetX();
    float GetY();

private:
    float x, y;
};

void ConstructorDefaultPointF( PointF *m);
void ConstructorInitPointF( float x, float y, PointF *m);
void ConstructorCopyPointF( const PointF &other, PointF *m);
void DestructorPointF( PointF *m);

//PointF
	r = pEngine->RegisterObjectType("PointF", sizeof(PointF), asOBJ_VALUE|asOBJ_POD|asGetTypeTraits<PointF>()); assert( r >= 0);
	r = pEngine->RegisterObjectBehaviour( "PointF", asBEHAVE_CONSTRUCT, "void f()", asFUNCTION(ConstructorDefaultPointF), asCALL_CDECL_OBJLAST); assert( r >= 0);
	r = pEngine->RegisterObjectBehaviour( "PointF", asBEHAVE_CONSTRUCT, "void f(float,float)", asFUNCTION(ConstructorInitPointF), asCALL_CDECL_OBJLAST); assert( r >= 0);
	r = pEngine->RegisterObjectBehaviour( "PointF", asBEHAVE_CONSTRUCT, "void f(const PointF &in)", asFUNCTION(ConstructorCopyPointF), asCALL_CDECL_OBJLAST); assert( r >= 0);
	r = pEngine->RegisterObjectBehaviour( "PointF", asBEHAVE_DESTRUCT, "void f()", asFUNCTION(DestructorPointF), asCALL_CDECL_OBJLAST); assert( r >= 0);

	r = pEngine->RegisterObjectMethod( "PointF", "void Set(float,float)", asMETHOD( PointF, Set), asCALL_THISCALL); assert( r >= 0);
	r = pEngine->RegisterObjectMethod( "PointF", "void SetX(float)", asMETHOD( PointF, SetX), asCALL_THISCALL); assert( r >= 0);
	r = pEngine->RegisterObjectMethod( "PointF", "void SetY(float)", asMETHOD( PointF, SetY), asCALL_THISCALL); assert( r >= 0);

	r = pEngine->RegisterObjectMethod( "PointF", "float GetX()", asMETHOD( PointF, GetX), asCALL_THISCALL); assert( r >= 0);
	r = pEngine->RegisterObjectMethod( "PointF", "float GetY()", asMETHOD( PointF, GetY), asCALL_THISCALL); assert( r >= 0);

DrawSprite is only being called once per frame so far and works for the first 2 frames, but then the app crashes here:

as_scriptengine.cpp

void asCScriptEngine::CallFree(void *obj) const
{
#ifndef WIP_16BYTE_ALIGN
	userFree(obj); <----------------- Crashes in the free function of libc
#else
	userFreeAligned(obj);
#endif
}

Upon examining the problem further, addr points to a pointer holding a strange address, like 0x0000c000 or something

as_callfunc.cpp

// Clean up arguments
	const asUINT cleanCount = sysFunc->cleanArgs.GetLength();
	if( cleanCount )
	{
		args = context->m_regs.stackPointer;

		// Skip the hidden argument for the return pointer
		if( descr->DoesReturnOnStack() )
			args += AS_PTR_SIZE;

		// Skip the object pointer
		if( callConv >= ICC_THISCALL )
			args += AS_PTR_SIZE;

		asSSystemFunctionInterface::SClean *clean = sysFunc->cleanArgs.AddressOf();
		for( asUINT n = 0; n < cleanCount; n++, clean++ )
		{
			void **addr = (void**)&args[clean->off];
			if( clean->op == 0 )
			{
				if( *addr != 0 )
				{
					engine->CallObjectMethod(*addr, clean->ot->beh.release);
					*addr = 0;
				}
			}
			else 
			{
				asASSERT( clean->op == 1 || clean->op == 2 );
				asASSERT( *addr );

				if( clean->op == 2 )
					engine->CallObjectMethod(*addr, clean->ot->beh.destruct);
				
				engine->CallFree(*addr);
			}
		}
	}

	return popSize;
} 

The app runs fine if DrawSprite is not called though. What could be causing this?

It's running on ARM, ARMv7 on a HTC One M8 to be specific.

Edit:

The changes work like a charm! Thanks.