Re: Compiler warning in costsize.c

From: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
To: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Compiler warning in costsize.c
Date: 2017-05-08 04:46:28
Message-ID: CAKJS1f9=JJZ-G_C_RM4ExTQZYyx812-ievc16PmyKBgZ+4Ka_A@mail.gmail.com
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On 11 April 2017 at 12:53, Michael Paquier <michael(dot)paquier(at)gmail(dot)com> wrote:
> On Tue, Apr 11, 2017 at 4:02 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> On Mon, Apr 10, 2017 at 2:09 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>>> ilmari(at)ilmari(dot)org (Dagfinn Ilmari =?utf-8?Q?Manns=C3=A5ker?=) writes:
>>>> Why bother with the 'rte' variable at all if it's only used for the
>>>> Assert()ing the rtekind?
>>>
>>> That was proposed a few messages back. I don't like it because it makes
>>> these functions look different from the other scan-cost-estimation
>>> functions, and we'd just have to undo the "optimization" if they ever
>>> grow a need to reference the rte for another purpose.
>>
>> I think that's sort of silly, though. It's a trivial difference,
>> neither likely to confuse anyone nor difficult to undo.
>
> +1. I would just do that and call it a day. There is no point to do a
> mandatory list lookup as that's just for an assertion, and fixing this
> warning does not seem worth the addition of fancier facilities. If the
> function declarations were doubly-nested in the code, I would
> personally consider the use of a variable, but not here.

Any more thoughts on what is acceptable for fixing this? beta1 is
looming and it seems a bit messy to be shipping that with these
warnings, however harmless they are.

--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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