QtXmlPatterns problem

Hi all. I've just started experimenting around with XQuery and the QtXmlPatterns module. I've
put together a small example application but it results in a Segfault. The test.xql script however
works just fine when processed by the patternist command or Saxon. It's also noteworthy that
changing

Code:

...
for $value in doc("test.xml")/test/entries/entry[@attr = 'y']
return $value

Code:

...
for $value in doc("test.xml")/test/entries/entry[@attr = 'y']
return string($value)

fixes the problem. But for now I want to play around with the nodes, not with the Atomic values they contain.

Main.cpp:

Code:

#include <QtGui>
#include <QtXmlPatterns>
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
    QXmlQuery query;
 
    QFile f("test.xql");
    if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
        qDebug() << "couldn't open query file.";
        return 1;
    }
 
    query.setQuery(&f);
    if (!query.isValid()) {
        qDebug() << "query not valid.";
        return 1;
    }
 
    QXmlResultItems results;
    query.evaluateToResult(&results);
 
    for (QXmlItem item = results.next(); !item.isNull(); item = results.next()) {
        if (item.isAtomicValue()) {
            qDebug() << item.toAtomicValue().toString();
        } else
            qDebug() << "encountered node";
    }
    return 0;
}

XQuery script (test.xql):

Code:

for $value in doc("test.xml")/test/entries/entry[@attr = 'y']
return $value

Xml File (test.xml):

Code:

<test>
    <entries>
        <entry attr="x">Value 1</entry>
        <entry attr="y">Value 2</entry>
        <entry attr="z">Value 3</entry>
    </entries>
</test>