Linux: QSaveFile creates files with 000 permission on 32bit systems

#include <QCoreApplication>
#include <QSaveFile>

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);

    QSaveFile f("test.txt");
    f.open(QSaveFile::WriteOnly | QSaveFile::Truncate);
    f.write("hello world\n");
    f.commit();
}