QPainterPath::intersected returns empty result

#include <QCoreApplication>
#include <QDebug>
#include <QPainterPath>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QPainterPath o;
    o.moveTo(68.00646200000001, 306.791802);
    o.lineTo(364.880318, 286.0312259999999);
    o.lineTo(349.309886, 63.37583399999997);
    o.lineTo(52.43603000000001, 84.13640999999998);
    o.lineTo(68.00646200000001, 306.791802);
    o.closeSubpath();

    QPainterPath p;
    p.moveTo(52.43603, 84.13640999999996);
    p.lineTo(349.34779328, 63.37318311999995);
    p.lineTo(364.92017856, 286.0565067999999);
    p.lineTo(68.00841528000001, 306.8197336799999);
    p.lineTo(52.43603, 84.13640999999996);
    p.closeSubpath();

	QPainterPath i = o.intersected(p);
	qDebug() << "o.intersected(p):" << i;
	i = p.intersected(o);
	qDebug() << "p.intersected(o):" << i;
    return 0;
}