#include <QCoreApplication>
#include <QDebug> 
        
// intensively 
class DummyClass : public QObject
{   
public:
    DummyClass() : QObject()
    {
        long long count = 1000*1000*10;
        while (count--)
            qWarning() << errorString();
        
    }   

    static inline QString errorString()
    //QString errorString()
    {
        int d = 1;
        QString s;
        s.sprintf(":: %d\n", d);
        return s;
//        return "Error String"
    }
};

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

    qWarning() << "hello world";
    DummyClass();

    return 0;
}