Re: Incautious handling of overlength identifiers

From: Joe Conway <mail(at)joeconway(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Incautious handling of overlength identifiers
Date: 2016-12-23 22:44:18
Message-ID: ed23895f-c3b5-e42c-7a79-c676378c34da@joeconway.com
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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

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