Buffer Overrun using Qt Threads and Signals

Question

I have to downgrade a project from QT5 to QT4 and get a weird buffer overrun error when doing so. Here\'s my code:

I create a QThread like so:

thread =         


        

Answer 1

void MainWindow::threadFinished() {
    reader = NULL;
    delete thread;
    thread = NULL;
}

Deleting the thread directly in the slot is not advised. You should use the deleteLater function.

thread->deleteLater();

However, you've already setup the thread to be deleted in the connection

connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));

So you're now trying to delete it twice!

As for the buffer-overrun, I suspect something has corrupted memory before the error has occurred.