QUrl::fromUserInput [QUrl::fromEncoded] does not work if string over 70 characters

#include <QtCore/QtCore>
int main(int argc, char **argv) {
    QCoreApplication a(argc, argv);

    qDebug() << "test1:" << QUrl::fromEncoded(QString("http://123456789a1a2a3a4a5a6a7a8a9b1b2b3b4b5b6b7b8b9c1c2c3c4c5c6c7c8c9d.pep").toUtf8(), QUrl::TolerantMode).toString().toAscii().data();
    qDebug() << "test2:" << QUrl::fromUserInput(QString("123456789a1a2a3a4a5a6a7a8a9b1b2b3b4b5b6b7b8b9c1c2c3c4c5c6c7c8c9d.pep")).toString().toAscii().data();
    qDebug() << "test3:" << QUrl::fromUserInput(QString("http://123456789a1a2a3a4a5a6a7a8a9b1b2b3b4b5b6b7b8b9c1c2c3c4c5c6c7c8c9d.pep")).toString().toAscii().data();
}