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From: Tom Lane <tgl@sss.pgh.pa.us>
To: RekGRpth <rekgrpth@gmail.com>
Cc: Richard Guo <guofenglinux@gmail.com>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #18247: Integer overflow leads to negative width
Date: Thu, 14 Dec 2023 22:20:21 -0500
Message-ID: <2903192.1702610421@sss.pgh.pa.us> (raw)
In-Reply-To: <CAPgh2mKOawDQbmrtxXv_rOCSNAo4ByorMDGHdvy=Gs7ub734tw@mail.gmail.com>
References: <18247-11ac477f02954422@postgresql.org>
	<CAMbWs48nZf9XgAVpXbOnwGWWLnmoOZb51wnhkNW5xfz_PyOyCw@mail.gmail.com>
	<2781181.1702565025@sss.pgh.pa.us>
	<CAMbWs4_8+mtt5C8EXmfHa_Hs-OW6EhEz_XjhzBk8miwg2h65CQ@mail.gmail.com>
	<CAPgh2mKOawDQbmrtxXv_rOCSNAo4ByorMDGHdvy=Gs7ub734tw@mail.gmail.com>

RekGRpth <rekgrpth@gmail.com> writes:
> How bad would it be if, after overflowing, the width value was within
> the allowed range?

Really pretty negligible, I should think.  You might get a not-great
choice of plan.  As Richard noted, there are some Asserts you could
hit; but not in a production build.

			regards, tom lane





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