getSplitCurves Fails with AcDb2dPolyline of polyType k2dCubicSplinePoly

[421232206]

 this should be a bug of Acdb2dPolyline.

 First you select an AcdbPolyline of k2dCubicSplinePoly,

the code below shows where the crush happens.

        AcDbObjectPointer<AcDbCurve> pCurve(idPL,AcDb::kForRead);
        AcGePoint3d pt3dOncurve;
        pCurve->getClosestPointTo(asPnt3d(pt),pt3dOncurve);
        double dParam = -1;
        Acad::ErrorStatus es = pCurve->getParamAtPoint(pt3dOncurve,dParam);
        acutPrintf(_T("\n%d,%g,%g,%g"),es,dParam,pt3dOncurve.x,pt3dOncurve.y);
        
        es = pCurve->getPointAtParam(dParam,pt3dOncurve); // here ,dParam usualy much bigger than the number of vertices.
        acutPrintf(_T("\n%d,%g,%g,%g"),es,dParam,pt3dOncurve.x,pt3dOncurve.y);
    
        AcGeDoubleArray dBulgeArr;
        dBulgeArr.append(dParam);
        AcDbVoidPtrArray curveSegments;
        AcGePoint3dArray pt3dNodes;
        pt3dNodes.append(pt3dOncurve);
        //es = pCurve->getSplitCurves(dBulgeArr,curveSegments);
        es = pCurve->getSplitCurves(pt3dNodes,curveSegments);// here crushes. but with a simple Acdb2dPolyline, the codes works very well.
        {
            int i=0;
            for (;i<curveSegments.length();++i)
            {
                AcDbCurve* pNewCurve = (AcDbCurve*)curveSegments[i];
                AcDbObjectId idNew;
                if (Acad_Ent::AppendEntity(pNewCurve,idNew))
                {
                    pNewCurve->close();
                }
            }
        }

[Alexander.Rivilis]

AutoCAD version? ObjectARX version? x86/x64?

[421232206]

sorry, I forgot that.

The CAD version is 2008, and OjbectARX is also 2008.

[421232206]

I guess this should be a bug, and autodesk would not like to fix it in Version such as 2008,2009.  if so ,I have to change my code.