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From: Thomas Munro <thomas.munro@gmail.com>
Date: Sun, 3 Apr 2022 08:07:58 +1200
Message-ID: <CA+hUKGJFhfgXMvygZuNMDgsEmVTzjB2vcttbEdxZrciN0yLLjA@mail.gmail.com>
Subject: Re: A qsort template
To: John Naylor <john.naylor@enterprisedb.com>
Cc: Peter Geoghegan <pg@bowt.ie>, pgsql-hackers <pgsql-hackers@postgresql.org>
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On Sun, Apr 3, 2022 at 12:41 AM John Naylor
<john.naylor@enterprisedb.com> wrote:
> On Sat, Apr 2, 2022 at 5:27 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > Reproduced locally, using the same few lines from the cluster.sql
> > test.  I'll try to dig more tomorrow...
>
> Thanks! Unfortunately I can't reproduce locally with clang 13/gcc 11,
> with -Og or -O2 with CFLAGS="-fsanitize=undefined,alignment" ...

Maybe you need to add -fno-sanitize-recover=all to make it crash,
otherwise it just prints the warning and keeps going.