Re: pg_partition_tree crashes for a non-defined relation

From: Amit Langote <amitlangote09(at)gmail(dot)com>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Postgres hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_partition_tree crashes for a non-defined relation
Date: 2018-12-08 03:28:53
Message-ID: CA+HiwqEqM9a4gTOQ9hi8eAXNW_PCsDJ7Twpd8q7W-THHyDifkQ@mail.gmail.com
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Hi,

Sorry for not replying sooner.

On Sat, Dec 8, 2018 at 8:06 Michael Paquier <michael(at)paquier(dot)xyz> wrote:

> On Fri, Dec 07, 2018 at 10:04:06AM +0900, Michael Paquier wrote:
> > While testing another patch, I have bumped into the issue of
> > $subject... I should have put some more negative testing from the start
> > on this stuff, here is a culprit query when passing directly an OID:
> > select pg_partition_tree(0);
> >
> > I think that we should make the function return NULL if the relation
> > defined does not exist, as we usually do for system-facing functions.
> > It is also easier for the caller to know that the relation does not
> > exist instead of having a plpgsql try/catch wrapper or such.
> >
> > Thoughts?
>
> Are there any objections about fixing this issue? I would rather fix it
> sonner than later.

Thanks for noticing it and creating the patch. The fix makes sense.

Regards,
Amit

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