Bug in QPainterPath::intersected()

 
#include <QApplication>
#include <QPainterPath>
#include <QString>
#include <QDebug>

static void print(const QString& str, const QPainterPath& pp)
{
    qDebug() << "Subject:" << str;
    for (int i = 0; i < pp.elementCount(); ++i) {
        const QPainterPath::Element& el = pp.elementAt(i);
        qDebug() << el.type << el.x << el.y;
    }
    if (pp.isEmpty()) qDebug() << '\t' << "!!! Empty path, this is incorrect !!!";
}

int main(int argc, char* argv[])
{
    QApplication app(argc, argv);

    QPainterPath path1;
    path1.moveTo(200, 3.22409e-5); // e-5 and higher leads to a bug
                                   // Using 3.22409e-4 starts to work correctly
    path1.lineTo(0, 0);
    path1.lineTo(1.07025e-13, 1450);
    path1.lineTo(750, 950);
    path1.lineTo(950, 750);
    path1.lineTo(200, 3.22409e-13);

    QPainterPath path2;
    path2.moveTo(0, 0);
    path2.lineTo(200, 800);
    path2.lineTo(600, 1500);
    path2.lineTo(1500, 1400);
    path2.lineTo(1900, 1200);
    path2.lineTo(2000, 1000);
    path2.lineTo(1400, 0);
    path2.lineTo(0, 0);
    
    QPainterPath p12 = path1.intersected(path2);
    QPainterPath p21 = path2.intersected(path1);

    print("path 1", path1);
    print("path 2", path2);
    print("intersected 1 with 2", p12);
    print("intersected 2 with 1", p21);

    return 0;
}