Zbigniew Komarnicki <cblas...@gmail.com> writes: > > I wanted to prohibit user to assign negative value to a variable. > This variable is later passed to a recurrence function as > argument and of course I got segmentation fault, because > the function is called 4294967291 times. > You MUST check the input. Consider a user who has an int with the value he wants to pass. If there were a check, he'd just write:
func(unsigned int(x)) to get the thing to compile. Or a user who in error computes a silly large positive value by any nunmber of means. There are languages which attempt to do bounds checking statically, but C isn't like that - which is why buffer overflow still is the friend of the malware writer. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87y5gcczhh....@aptiva.optonline.net
