Qt crashes on determining sizeHints for strings ending in carriage return

#include <QApplication>
#include <QTreeWidget>

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

    QTreeWidget tw;
    new QTreeWidgetItem(&tw, QStringList() << "Hello Worlt!\r");
    tw.show();

    return app.exec();
}

Backtrace (please include this in your support request):
./test-widgetfactory(_ZN2Ur11Application11catchSignalEi+0x2d)[0x43d303]
/lib64/libpthread.so.0(+0xf1f0)[0x7ff7af6b61f0]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Gui.so.5(_ZNK11QTextEngine21shapeTextWithHarfbuzzEi+0x75b)[0x7ff7adbc1d9b]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Gui.so.5(_ZNK11QTextEngine9shapeTextEi+0xd3)[0x7ff7adbc2973]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Gui.so.5(_ZNK11QTextEngine5shapeEi+0xdb)[0x7ff7adbc2d5b]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Gui.so.5(_ZN9QTextLine13layout_helperEi+0xf18)[0x7ff7adbd4a08]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Gui.so.5(_ZN9QTextLine12setLineWidthEd+0xcd)[0x7ff7adbd5b9d]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(+0x19c3b6)[0x7ff7ae4763b6]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(+0x1a2f5b)[0x7ff7ae47cf5b]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(+0x1a39b8)[0x7ff7ae47d9b8]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZNK12QCommonStyle16sizeFromContentsEN6QStyle12ContentsTypeEPK12QStyleOptionRK5QSizePK7QWidget+0x1e5)[0x7ff7ae47e395]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(+0x20f257)[0x7ff7ae4e9257]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZNK19QStyledItemDelegate8sizeHintERK20QStyleOptionViewItemRK11QModelIndex+0x2d3)[0x7ff7ae6b05c3]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZNK9QTreeView16indexRowSizeHintERK11QModelIndex+0x388)[0x7ff7ae66b338]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZNK16QTreeViewPrivate10itemHeightEi+0x99)[0x7ff7ae66b4d9]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN16QTreeViewPrivate16updateScrollBarsEv+0x273)[0x7ff7ae66b7b3]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN9QTreeView16updateGeometriesEv+0x2bf)[0x7ff7ae66bb6f]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN7QWidget5eventEP6QEvent+0x41c)[0x7ff7ae44927c]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN6QFrame5eventEP6QEvent+0x26)[0x7ff7ae52ec46]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN17QAbstractItemView13viewportEventEP6QEvent+0x1fb)[0x7ff7ae62f77b]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN9QTreeView13viewportEventEP6QEvent+0x1ea)[0x7ff7ae66ca7a]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Core.so.5(_ZN23QCoreApplicationPrivate29sendThroughObjectEventFiltersEP7QObjectP6QEvent+0xed)[0x7ff7af2759ed]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x7f)[0x7ff7ae412cef]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN12QApplication6notifyEP7QObjectP6QEvent+0x456)[0x7ff7ae4161c6]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Core.so.5(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0x84)[0x7ff7af2757c4]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN14QWidgetPrivate30sendPendingMoveAndResizeEventsEbb+0x1c5)[0x7ff7ae445095]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN14QWidgetPrivate11show_helperEv+0x24)[0x7ff7ae44cff4]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN7QWidget10setVisibleEb+0x13d)[0x7ff7ae44d55d]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN14QWidgetPrivate12showChildrenEb+0x110)[0x7ff7ae44d3f0]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN14QWidgetPrivate11show_helperEv+0x40)[0x7ff7ae44d010]
/local/mlangen/AbsInt/SVN/build/launcher.default/usr/lib/libQt5Widgets.so.5(_ZN7QWidget10setVisibleEb+0x13d)[0x7ff7ae44d55d]
./test-widgetfactory(main+0xb0)[0x41f56c]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff7acc87a15]
./test-widgetfactory[0x41f3f9]