Subj : Re: Codeguard found error in sprintf()
To   : borland.public.cpp.borlandcpp
From : "MarvinAvery" <marvin.avery@hrdc-drhc.gc.ca>
Date : Wed Feb 25 2004 09:26 am


"Richard Hufford" <support@thesystem.com> wrote in message
news:403bf772@newsgroups.borland.com...
> I've just started using Codeguard to look for errors in my BC++ 5.01
> program, and it found an error in one of my common uses of sprintf().  My
> code looks much like this:
>
>   char buf[100];
>   char *r = new char[8];
>   strcpy (r, "richard");
>   sprintf (buf, "%25s", r);
>
> Codeguard gives this message:
> CodeGuard Error:  Access overrun (thread 0x0114)
> Attempt to access 25 byte(s) at 0x014C63B4, that is at heap block
0x014C63B4
> which is only 8 bytes long.
>

I get a similar problem with sscanf():

char sLine[256];
sscanf (sLine, "%*10s%d", &i);

Note that my code works perfectly. It's just that CodeGuard complains about
this line. However, I use sscanf() elsewhere with no CodeGuard complaints.


--
Marvin Avery
marvin.avery@hrdc-drhc.gc.ca

.