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From: Joe Conway <mail@joeconway.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-hackers@postgresql.org
Subject: Re: Incautious handling of overlength identifiers
Date: Fri, 23 Dec 2016 14:44:18 -0800
Message-ID: <ed23895f-c3b5-e42c-7a79-c676378c34da@joeconway.com> (raw)
In-Reply-To: <20641.1482525852@sss.pgh.pa.us>
References: <17691.1482523168@sss.pgh.pa.us>
	<20641.1482525852@sss.pgh.pa.us>
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On 12/23/2016 12:44 PM, Tom Lane wrote:
> I wrote:
>> So what to do?  We could run around and fix these individual cases
>> and call it good, but if we do, I will bet a very fine dinner that
>> more such errors will sneak in before long.  Seems like we need a
>> coding convention that discourages just randomly treating a C string
>> as a valid value of type NAME.  Not sure how to get there though.
> 
> An alternative worth considering, especially for the back branches,
> is simply to remove the Assert in hashname().  That would give us
> the behavior that non-developers see anyway, which is that these
> functions always fail to match overlength names, whether or not
> the names would have matched after truncation.  Trying to apply
> truncation more consistently could be left as an improvement
> project for later.

That sounds reasonable to me.

Joe

-- 
Crunchy Data - http://crunchydata.com
PostgreSQL Support for Secure Enterprises
Consulting, Training, & Open Source Development

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