Issues while generating a view with QStandardModel,QStandardItem & QTreeview

Code:

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/*creating an QStandardItem & appending 2 new QStandardItems such that
 
nameItem
|
|-------cyName  //having a text to set at runtime
|-------cll          //having a text to set at runtime
 
*/
QStandardItem*  MainWindow::createNewCRListItem(const QStringList &sList)
{
    nameItem=new QStandardItem(); 
    nameItem->setFlags(Qt::NoItemFlags);
    nameItem->setColumnCount(1);
 
    QIcon lIcon(":/images/contact.png");
    nameItem->setIcon(lIcon);
    nameItem->data(Qt::DisplayRole);
    QStandardItem cyName;
    QStandardItem cll;
 
 
    if(sList.size()!=3)
        Q_ASSERT("error in parsing string list ");
 
    for (int j=0;j<sList.size();j++)
    {
        if (j==0)
        {
            const QString str= sList.at(j);
            nameItem->setText(str);
            qDebug()<< str;
        }
        if(j==1)
        {
            const QString str= sList.at(j);
            cyName.setText(str);
            qDebug()<< str;
        }
        if(j==2)
        {
            const QString str= sList.at(j);
            cll.setText(str);
            qDebug()<< str;
        }
    }
    nameItem->appendRow(&cyName);
    nameItem->appendRow(&cll);
    //emit nameItem->emitDataChanged();
    return nameItem;
}
 
/* get a QList<QStringList> from parsing object
    create a QStandardItem (above func)
    set that QStandaradItem to a QStandardModel
    later .. set the QStandardItem to QTreeView as shown below
*/
void MainWindow::getlistFromParse( parseClass &pObj)
{
 
    list = pObj.getList();  //return the reference of list
    int modelSize= list.size();
    int itemRow;
    qDebug()<< "Row cont "<< modelSize;
    crItemModel.setRowCount(modelSize);
    qDebug()<<"check row: "<<crItemModel.rowCount();
    crItemModel.setColumnCount(1);
    qDebug()<<"check col : "<<crItemModel.columnCount();
 
    QList<QStringList>::const_iterator i;
    for(i=list.constBegin(),itemRow=0;i!=list.constEnd();itemRow++,i++)
    {
        const QStringList& subList=*i;
        QStandardItem *item= MainWindow::createNewCRListItem(subList);
 
        crItemModel.appendRow(item);   //application closing unexpectedly 
        //crItemModel.setItem(itemRow,1,item);
    }
}

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while the stack trace shows segmantation fault in crItemModel.appendRow(item);
crItemModel is of type QStandardModel
and

Code:

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tree = new QTreeView(parent);
    tree->setModel(&crItemModel);

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Think about scope:

Code:

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QStandardItem cyName;
QStandardItem cll;

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I am so stupid on this.
Thanks a lot.