Re: [sqlsmith] Failed assertion in brin_minmax_multi_distance_float4 on REL_14_STABLE

From: Justin Pryzby <pryzby(at)telsasoft(dot)com>
To: Andreas Seltenreich <andreas(dot)seltenreich(at)credativ(dot)de>
Cc: pgsql-hackers(at)postgresql(dot)org, Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>
Subject: Re: [sqlsmith] Failed assertion in brin_minmax_multi_distance_float4 on REL_14_STABLE
Date: 2021-11-04 16:53:57
Message-ID: 20211104165357.GU17618@telsasoft.com
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On Thu, Nov 04, 2021 at 09:46:49AM +0100, Andreas Seltenreich wrote:
> sqlsmith triggers the following assertion when testing REL_14_STABLE:
>
> TRAP: FailedAssertion("a1 <= a2", File: "brin_minmax_multi.c", Line: 1879, PID: 631814)
>
> I can reproduce it with the following query on a fresh regression
> database:
>
> insert into public.brintest_multi (float4col) values (real 'nan');
>
> The branch was at f6162c020c while testing, backtrace below.

I couldn't reproduce this, but it reminds me of this one, which we also had
trouble reproducing.

https://www.postgresql.org/message-id/flat/20210913004447.GA17931%40ahch-to

Could you send a "bt full" ?

> (gdb) bt

--
Justin

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