Re: Remove redundant assignment in CreateWorkExprContext

From: Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>
To: Jeff Davis <pgsql(at)j-davis(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andreas Karlsson <andreas(at)proxel(dot)se>, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Remove redundant assignment in CreateWorkExprContext
Date: 2026-01-15 11:38:59
Message-ID: aWjR05UAyxNJq/ef@ip-10-97-1-34.eu-west-3.compute.internal
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Hi,

On Wed, Jan 14, 2026 at 12:03:01PM -0800, Jeff Davis wrote:
> On Wed, 2026-01-14 at 02:33 -0500, Tom Lane wrote:
> > Looking at the git history, CreateWorkExprContext was introduced in
> > 50a38f651, and at that time it did some nontrivial calculations
> > to adjust that initial value of maxBlockSize.  Later, cc721c459
> > simplified matters but forgot to remove the now-useless
> > initialization.  So +1, unless Jeff has some reason to keep it
> > like this?
>
> Right. Committed, thank you.

FWIW, this thread gave me the idea to check for such cases in the entire code
tree. I did it with the help of [1], and that would give:

"
85 files changed, 116 insertions(+), 116 deletions(-)
"

This is quite large, so if we think that's worth the time and energy we could
update a subset of files at a time per month.

That would:

- keep changes consistent within each file
- ease the review(s)
- avoid "large" rebases for patches waiting in the commitfest

Thoughts?

[1]: https://github.com/bdrouvot/coccinelle_on_pg/blob/main/misc/useless_assignment.cocci

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

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