Re: strlen on a NULL

[mh at mike dot franken dot de (Michael Hirmke)]

Valery Fine [fine@bnl.gov] wrote:

>On 12 May 98 at 13:42, Kjeld.F.Christensen@dxd.erics wrote:
>
>> On NT your process may lie anywhere, but never in ZERO, Thus you are
>> not permitted to read from adress NULL. (You are not allowed to
>> snoop around in the interrupt vetors!)
>
>  Some int strlen(char *s) is started with
>
>  int strlen(char *s){
>   if (s==0) return 0;
                     ^
                     *This is really incorrect behaviour* !
                     Nothing also doesn't have length of zero.
                     If the function can handle zero pointers,
                     the only correct behaviour AFAIK is to
                     return -1 and set "errno" as appropriate.
>   . . .
>  }
>
>  but not all.

Bye.
Michael.
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