Horton

Re: Detecting pointer misalignment (was Re: pgsql: Implementation of subscripting for jsonb)

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: Alexander Korotkov <aekorotkov@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Heikki Linnakangas <hlinnaka@iki.fi>, Alexander Korotkov <akorotkov@postgresql.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-02-11T21:03:55Z
Lists: pgsql-hackers 
On Tue, Feb 9, 2021 at 1:34 PM Alexander Korotkov <aekorotkov@gmail.com> wrote:
> Could we have both cfbot + buildfarm animals?

Hi Alexander,

For cfbot, yeah it does seem like a good idea to throw whatever code
sanitiser stuff we can into the automated tests, especially stuff that
isn't prone to false alarms.  Can you please recommend an exact change
to apply to:

https://github.com/macdice/cfbot/blob/master/cirrus/.cirrus.yml

Note that FreeBSD and macOS are using clang (though you might think
the latter is using gcc from its configure output...), and Linux is
using gcc.

Commits

  1. pg_attribute_no_sanitize_alignment() macro

  2. Tweak compiler version cutoff for no_sanitize("alignment") support.

  3. Implementation of subscripting for jsonb