QDateTime addSecs() is behaving strangely with Qt 4.7.0

[hakaishi]

If adding less than 3*3600 seconds (3 hours) everything is fine, but if it reaches three hours it adds one hour less. Note that this only occurs when the set date is the current date. For examle adding 3 hours results in SomeTime+2 hours.
An example code would look like this:

QDateTime today = QDateTime(QDate(2010,10,31)); //current date
QDateTime timeInTheFuture = today.addSecs(3*3600); //or (even if only one second) more than 3 hours
qDebug() << timeInTheFuture; //returns the current date 2 o'clock instead of 3 o'clock

And there is another strange thing:

QDateTime thisTime = QDateTime::currentDateTime();
thisTime.addSecs(3600);
qDebug()<<thisTime;

This returns only the current time. addSecs(3600) seems to be ignored.

Kind regards
 Hakaishi

[hakaishi (hakaishi)]

Why does Ubuntu import packages from Debian Experimental??? - Is unstable not unstable enough?

[hakaishi (hakaishi)]

The time calculation wasn't buggy after all... The "problem" was the winter time change.
Sorry for the false alarm.

Kind regards
 Hakaishi