From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alexander Korotkov <aekorotkov@gmail.com>
cc: Thomas Munro <thomas.munro@gmail.com>,
        Heikki Linnakangas <hlinnaka@iki.fi>,
        Alexander Korotkov <akorotkov@postgresql.org>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Detecting pointer misalignment (was Re: pgsql: Implementation of
 subscripting for jsonb)
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Comments: In-reply-to Tom Lane <tgl@sss.pgh.pa.us>
	message dated "Fri, 12 Feb 2021 12:19:43 -0500"
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Date: Fri, 12 Feb 2021 17:35:46 -0500
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I wrote:
> Looking around at other recent reports, it looks like we'll need to tweak
> the compiler version cutoffs a bit.  I see for instance that spurfowl,
> with gcc (Ubuntu 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609, is whining:
> ...
> So maybe it'd better be __GNUC__ >= 6 not __GNUC__ >= 5.  I think
> we can wait a little bit for more reports before messing with that,
> though.

Further reports show that gcc 6.x and 7.x also produce warnings,
so I moved the cutoff up to 8.  Hopefully that's good enough.
We could write a configure test instead, but I'd just as soon not
expend configure cycles on this.

			regards, tom lane