Doing style->drawControl(QStyle::CE_ProgressBar) inside QStyledItemDelegate causes a crash

#include <QApplication>
#include <QMainWindow>
#include <QStyledItemDelegate>
#include <QListWidget>

class Delegate : public QStyledItemDelegate {
public:
    using QStyledItemDelegate::QStyledItemDelegate;

    void paint(QPainter * p, const QStyleOptionViewItem & option, const QModelIndex & index) const override {        
        QStyleOptionProgressBar optProgress;
        optProgress.rect = option.rect;
        optProgress.minimum = 0;
        optProgress.maximum = 100;
        optProgress.progress = 50;
        optProgress.textVisible = false;
        if (auto* style = option.widget->style(); style != nullptr)
            style->drawControl(QStyle::CE_ProgressBar, &optProgress, p, option.widget);
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QMainWindow w;

    auto* view = new QListWidget{&w};
    view->setItemDelegate(new Delegate{view});
    w.setCentralWidget(view);
    view->addItem("abc");

    w.show();
    return a.exec();
}