XML : QXmlStreamReader doesn't parse well-formed XML file

I've been trying for a couple of day to read an XML file with Qt using this method (https://github.com/sr105/international_trade/tree/master/large-file-test) , but whereas code looks rather robust, the QXmlStreamReader doesn't read the file at all.

I've modified the code and the XML file a lot of time to figure out where the error was coming from, but the XML is valid (according to the XML validator) , and the program doesn't crash, end unexpectedly, or leaks out. It simply doesn't work.

So by testing some things, I've managed to find one clue : the first use of readNext() returns a StartDocument token ; but any subsequent use returns an invalid token (despite the fact that the XML have been validated) . I've also tried readNextStartElement, same issue.

Here is the relevent code :

  void MyXmlStreamReader::processElementsByTagNameHierarchy(QStringList names, fn_type method, void *data)  {      if (names.isEmpty() || method == 0)          return;        QString currentElementName = _xml.name().toString();      QString name = names.first();      names.removeFirst();        while (!_xml.atEnd()) {          while (_xml.readNextStartElement())          {              if (_xml.name() != name)              {                  _xml.skipCurrentElement();                  continue;              }                if (names.isEmpty())                  method(*this, data);              else                  processElementsByTagNameHierarchy(names, method, data);                while(!(_xml.isEndElement() && _xml.name() == name))                  _xml.skipCurrentElement();          }            if (_xml.isEndElement() && _xml.name() == currentElementName)              break;      }    }    

(if you want the complete code, you can have it at the link above)

and the XML file:

  <?xml version="1.0" encoding="UTF-8" ?>    <pilots>      <pilot>          <name>Asgore</name>          <surname>Dreemurr</surname>          <mass>90</mass>      </pilot>    </pilots>    

I truly don't understand where the error is coming from...

Thanks to anyone who could help me.

Cordially, Jaxon