FreeTDS Development Group

["Lowden, James K" <LowdenJK AT bernstein.com>]

> > We shouldn't null-terminate unless destlen is -1.  If the 
> destination buffer
> > is too small, we should call the error handler and return 
> -1.  So say the docs.  Eric?  

> From: Brian Bruns [mailto:camber AT ais.org]
> Sent: July 9, 2002 11:47 AM
>
> It think the root cause may be deeper.  Why is a short 
> destlen being asked
> for?  This may have something to do with the return value of 
> dbdatlen() or
> similar calls... ie the application code may be:
> 
> mylen = dbdatlen(dbproc, colnum);
> mybuf = malloc(mylen);
> dbconvert(dbproc,..., mybuf, mylen);
> 
> So by fixing dbdatlen() or whichever it turns out to be, we may get an
> extra char *and* no buffer problem.

I see your point.  I was thinking more of user conversions, via dbconvert()
or whatever.  This should work, and doesn't:

        int i = 1;
        char c;
        erc = dbconvert (dbproc, SYBINT4, &i, 0, SYBCHAR, &c, 1);

But there may well be a deeper issue within tdslib.  

--jkl