QRect::intersects() returns false for very large rectangles

#include <QDebug>
#include <QRect>
#include <QPoint>

int main(int argc, char *argv[])
{
  QRect r1(QPoint(-2000000000, 2000000000), QPoint(2000000000, -2000000000));

  QRect r2(QPoint(0, 100), QPoint(100, 0));
  bool isec = r1.intersects(r2);
  QRect rIsec = r1 & r2;
  qDebug() << "Intersection:" << isec << rIsec.left() << rIsec.y() + rIsec.height() << rIsec.x() + rIsec.width() << rIsec.top();
  qDebug() << rIsec.isNull();
  qDebug() << rIsec;
  return 0;
}