BUG #18224: message bug in libpqwalreceiver.c.

From: PG Bug reporting form <noreply(at)postgresql(dot)org>
To: pgsql-bugs(at)lists(dot)postgresql(dot)org
Cc: t(dot)katsumata1122(at)gmail(dot)com
Subject: BUG #18224: message bug in libpqwalreceiver.c.
Date: 2023-12-04 11:24:36
Message-ID: 18224-59c34f71e2c6a5ed@postgresql.org
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The following bug has been logged on the website:

Bug reference: 18224
Logged by: Tomonari Katsumata
Email address: t(dot)katsumata1122(at)gmail(dot)com
PostgreSQL version: 16.1
Operating system: any
Description:

Hello

I found a small bug in the error message of libpqwalreceiver.c.

According to the manual, identify_system returns one row and
four columns. (This is also the actual behavior)
https://www.postgresql.org/docs/current/protocol-replication.html#PROTOCOL-REPLICATION-IDENTIFY-SYSTEM

However, when data other than one row and four columns is returned,
incorrect values ​​are reported as expected values ​​as shown below.

＞Could not identify system: got X rows and Y fields, expected 3 rows and 1
or more fields.

It looks like the arguments are in the wrong order.
Also, it seems that the decision to return 4 fields in 9.4 was not
reflected.

This is a trivial issue, but I was curious about it so I reported it.

Best regards,
----
Tomonari Katsumata

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Next Message king tomo 2023-12-04 11:28:37 Re: BUG #18224: message bug in libpqwalreceiver.c.
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