QFileInfo.size() for shortcut in windows is wrong!

I copy these code from: http://doc.qt.io/qt-5/qfileinfo.html

#ifdef Q_OS_WIN

QFileInfo info1("C:
Documents and Settings\\Bob
untabify.lnk");
info1.isSymLink();
info1.absoluteFilePath();
info1.size(); // it returns 63942, not 743, wrong!!!!
info1.symLinkTarget();

QFileInfo info2(info1.symLinkTarget());
info2.isSymLink();
info2.absoluteFilePath();
info2.size(); // returns 63942

#endif

just change the shortcut to my own shortcut, but info1.size() and info2.size() have the same value, it is wrong! Please correct it!