if (aloc == NULL || bloc == NULL)
{
wxMessageBox(_("Error: Couldn't locate aloc and
bloc when both were supposedly set."));
return;
}
This if condition in Output.cpp is met when selecting
text from the top of the buffer while the buffer is so
full that it starts forgetting lines. It only happens
when one selects text with the mouse and the mouse
button is still held down while the selection starts
goes out of the buffer.
A better way to handle this condition should be made.
One possibility seems to just return without a message
box but I do not know the inner workings of this and I
bet it would be more sane to move aloc to the top of
the buffer when it would move out of it (so that the
selection start still exists).
