I think people are misunderstanding this; it's pedagogical. From the link:
'I want to use it as an exercise for you in finding hacks, attacks, defects, and bugs by going through "K&R C" to break all the code...When you are done doing this, you will have a finely honed eye for defect.'
He's trying to train his readers to think about places code can break.
'I want to use it as an exercise for you in finding hacks, attacks, defects, and bugs by going through "K&R C" to break all the code...When you are done doing this, you will have a finely honed eye for defect.'
He's trying to train his readers to think about places code can break.