Re: [PATCH] Fix compilation of nodeMergejoin.c with EXEC_MERGEJOINDEBUG

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Tatsuya Kawata <kawatatatsuya0913(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH] Fix compilation of nodeMergejoin.c with EXEC_MERGEJOINDEBUG
Date: 2026-08-16 06:56:03
Message-ID: aoFfAvp6xdk7Cdi6@paquier.xyz
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On Sun, Aug 16, 2026 at 03:27:43PM +0900, Tatsuya Kawata wrote:
> debugtup() is declared in access/printtup.h, but execdebug.h includes
> only executor/executor.h and nodes/print.h. The attached one-line patch
> adds it.
>
> As for back-patching, I think master alone is enough since this is
> debug-only code, but I don't have a strong opinion.

The oldest version of the tree I have around is v11, and if I enable
EXEC_MERGEJOINDEBUG I get the exact same failure. This means that
this has been unnoticed for at least 10 years.

So question time: Is this debugging code still relevant and wouldn't
it be better to just remove it? It looks pretty clear to me that
nobody is using this #define at all, or this failure would have been
noticed a long time ago.

Note that an all-time search of EXEC_MERGEJOINDEBUG on pgsql-hackers
and pgsql-bugs points only at this thread.
--
Michael

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