Should we add an Assert() to make it clear the current code is OK?
---------------------------------------------------------------------------
Tom Lane wrote:
> "J.R. Nield" <jrnield@usol.com> writes:
> > The attached patches against 7.3 and 7.4 fix a subtraction carry bug in
> > xlog.c.
>
> This is simply a waste of cycles, because xrecoff can never be zero
> (if it were, it'd be pointing at a page header, which is not a valid
> record location). If you look around in the code, you'll note that
> xrecoff==0 is actually used as an invalid-value flag in a couple of
> contexts.
>
> Can you point to anyplace where the behavior would change? If so
> I think there's a deeper bug to fix.
>
> regards, tom lane
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org
>
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073