Wireshark · Wireshark-dev: Re: [Wireshark-dev] [Wireshark-commits] rev 27948: /trunk/epan/ /trunk/epan/: emem.c

[Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>]

Guy Harris wrote:
> On Apr 3, 2009, at 10:32 AM, jmayer@xxxxxxxxxxxxx wrote:
>
> > Don't crash on linux:
> > strlen(NULL) isn't an acceptable call.
>
> I'd be somewhat surprised if there's a platform out there on which we  
> run where strlen(NULL) *doesn't* crash; on most if not all platforms  
> on which we run:
>
> 	1) NULL has all of its bits zero;
>
> 	2) at least one page of address space starting at 0 is deliberately  
> missing (to catch null-pointer dereferences);
>
> and I suspect most if not all implementations of strlen() don't  
> explicitly check for a null argument.

I have this vague recollection of some platform not minding being handed 
NULL pointers to strings; I think it caused me some grief while porting 
to Solaris.  HPUX maybe?