Re: Fix bug with accessing to temporary tables of other sessions

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Jim Jones <jim(dot)jones(at)uni-muenster(dot)de>
Cc: Michael Paquier <michael(at)paquier(dot)xyz>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Soumya S Murali <soumyamurali(dot)work(at)gmail(dot)com>, Daniil Davydov <3danissimo(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Stepan Neretin <slpmcf(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Mohamed Ali <moali(dot)pg(at)gmail(dot)com>, Nazneen Jafri <jafrinazneen(at)gmail(dot)com>, Shawn McCoy <shawn(dot)the(dot)mccoy(at)gmail(dot)com>
Subject: Re: Fix bug with accessing to temporary tables of other sessions
Date: 2026-04-24 22:30:51
Message-ID: CAKFQuwYy4rEo0xBA9PtxF2=Fkwe0LvnT3yHR+6c5B044d+RPbA@mail.gmail.com
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On Fri, Apr 24, 2026 at 3:09 PM Jim Jones <jim(dot)jones(at)uni-muenster(dot)de> wrote:

>
> 0001 - TAP tests with improved coverage and comments that pass on
> current master, documenting the existing behaviour, which means broken
> commands silently succeed (e.g. SELECT returns 0 rows, no error)

> 0002 - read_stream.c and bufmgr.c fix + updated test expectations (the
> same commands now raise errors)
>

If you can run the tests against v17 (that is the behavior we are trying to
restore here, correct?) and v18 that would help demonstrate why the
backpatch is needed.

David J.

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