Re: strncmp->memcmp when we know the shorter length
Tom Lane <tgl@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Gurjeet Singh <singh.gurjeet@gmail.com>, Noah Misch <noah@leadboat.com>, pgsql-hackers@postgresql.org
Date: 2010-12-22T04:17:45Z
Lists: pgsql-hackers
Robert Haas <robertmhaas@gmail.com> writes: > On Tue, Dec 21, 2010 at 10:24 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: >> I'm fairly uncomfortable about the broad swath and low return of this >> patch. Noah is assuming that none of these places are relying on >> strncmp to stop short upon finding a null, and I don't believe that >> that's a safe assumption in every single place. Nor do I believe that >> it's worth the effort of trying to prove it safe in most of those >> places. > Eh, I already committed somewhat more than that. I did think about > the concern which you raise. Okay ... I was arguing for not bothering to expend that effort, but since you already did, it's a moot point. regards, tom lane