Re: pgsql: Fix crash bug in RestoreSnapshot.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-committers <pgsql-committers(at)postgresql(dot)org>
Subject: Re: pgsql: Fix crash bug in RestoreSnapshot.
Date: 2016-07-01 14:43:04
Message-ID: 19193.1467384184@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> On 1 July 2016 at 16:04, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> Because that's where the code was added. In 9.5, it would only matter
>> for extensions using the ParallelContext machinery.

> It seems strange to me to make an unnecessary change to a production
> release, that's all.
> My understanding was that we backpatched only as far as a bug occurs,
> rather than as far as patch can be applied.

I think Robert is saying that the problem *is* reachable in 9.5, given
a suitable extension. In that case fixing it is appropriate, whether
or not we know of such an extension today.

regards, tom lane

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