Re: HOT chain validation in verify_heapam() - Mailing list pgsql-hackers

On Thu, Mar 23, 2023 at 4:36 PM Andres Freund <andres@anarazel.de> wrote:
> Could it be that the tests didn't exercise the path before?

Hmm, perhaps.

> > Nonetheless, here's a patch. I notice that there's a similar problem
> > in another place, too. get_xid_status() is called a total of five
> > times and it looks like only three of them got it right. I suppose
> > that if this is correct we should back-patch it.
>
> Yea, I think you're right.

OK.

> > +                     report_corruption(ctx,
> > +                                                       pstrdup("xmin is invalid"));
>
> Not a correctnes issue: Nearly all callers to report_corruption() do a
> psprintf(), the remaining a pstrdup(), as here. Seems like it'd be cleaner to
> just make report_corruption() accept a format string?

Meh.

--
Robert Haas
EDB: http://www.enterprisedb.com