Creating a QByteArray from a QJsonDocument containing a string longer than 65535 fails.

    /* Create a QString 70000 chars long */
    QString s;
    for(int i = 0; i < 70000; i++)
        s.append("c");

    /* Create a QMap with a single key/value pair */
    QMap <QString, QVariant> map;
    map["key"] = s;
	
    /* Create a QJsonDocument from the QMap ... */
    QJsonDocument d1 = QJsonDocument::fromVariant(QVariant(map));
    /* ... and a QByteArray from the QJsonDocument */
    QByteArray a1 = d1.toJson();

    /* Create a QJsonDocument from the QByteArray ... */
    QJsonDocument d2 = QJsonDocument::fromJson(a1);
    /* ... and a QByteArray from the QJsonDocument */
    QByteArray a2 = d2.toJson();

class Latin1String
{
public:
    Latin1String(const char *data) { d = (Data *)data; }

    struct Data {
        qle_short length;
        char latin1[1];
    };
    Data *d;
...
};