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In-Reply-To: <98c1c0d9-7962-4669-90f2-deb28a665a55@uni-muenster.de>
From: "David G. Johnston" <david.g.johnston@gmail.com>
Date: Fri, 24 Apr 2026 15:30:51 -0700
Message-ID: 
 <CAKFQuwYy4rEo0xBA9PtxF2=Fkwe0LvnT3yHR+6c5B044d+RPbA@mail.gmail.com>
Subject: Re: Fix bug with accessing to temporary tables of other sessions
To: Jim Jones <jim.jones@uni-muenster.de>
Cc: Michael Paquier <michael@paquier.xyz>,
 Alexander Korotkov <aekorotkov@gmail.com>,
	Soumya S Murali <soumyamurali.work@gmail.com>,
 Daniil Davydov <3danissimo@gmail.com>,
	Tom Lane <tgl@sss.pgh.pa.us>, Stepan Neretin <slpmcf@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@postgresql.org>,
 Mohamed Ali <moali.pg@gmail.com>,
	Nazneen Jafri <jafrinazneen@gmail.com>,
 Shawn McCoy <shawn.the.mccoy@gmail.com>
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On Fri, Apr 24, 2026 at 3:09=E2=80=AFPM Jim Jones <jim.jones@uni-muenster.d=
e> 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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<div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"fon=
t-family:arial,helvetica,sans-serif"><span style=3D"font-family:Arial,Helve=
tica,sans-serif">On Fri, Apr 24, 2026 at 3:09=E2=80=AFPM Jim Jones &lt;<a h=
ref=3D"mailto:jim.jones@uni-muenster.de">jim.jones@uni-muenster.de</a>&gt; =
wrote:</span></div></div><div class=3D"gmail_quote gmail_quote_container"><=
blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l=
eft:1px solid rgb(204,204,204);padding-left:1ex"><br>
0001 - TAP tests with improved coverage and comments that pass on<br>
current master, documenting the existing behaviour, which means broken<br>
commands silently succeed (e.g. SELECT returns 0 rows, no error)</blockquot=
e><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
0002 - read_stream.c and bufmgr.c fix + updated test expectations (the<br>
same commands now raise errors)<br>
</blockquote><div><br></div><div class=3D"gmail_default" style=3D"font-fami=
ly:arial,helvetica,sans-serif">If you can run the tests against v17 (that i=
s the behavior we are trying to restore here, correct?) and v18 that would =
help demonstrate why the backpatch is needed.</div><div class=3D"gmail_defa=
ult" style=3D"font-family:arial,helvetica,sans-serif"><br></div><div class=
=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif">David J=
.</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sa=
ns-serif"><br></div></div></div>

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