http://ks.wikipedia.org triggers an assertion in QTextLayout

#include <QtGui/QtGui>

int main( int argc, char** argv ){
     QGuiApplication app(argc, argv);
     Q_UNUSED(app);
     QTextLayout l(QString::fromUtf8("\u06c1\u066e\u06ea\u06a9\u064f\u0646"));
     l.beginLayout();
     QTextLine line = l.createLine();
     line.setLineWidth(25.0);
     l.endLayout();
     return 0;
}