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Re: bug in plancache.c

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: yamt(at)mwd(dot)biglobe(dot)ne(dot)jp (YAMAMOTO Takashi)
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: bug in plancache.c
Date: 2011-09-26 16:45:58
Message-ID: 9261.1317055558@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
yamt(at)mwd(dot)biglobe(dot)ne(dot)jp (YAMAMOTO Takashi) writes:
> GetCachedPlan can pass the 'qlist' to the planner twice.
> if i understand the code correctly, it's unsafe because the planner is
> destructive wrt the input tree.  for my application, it often causes
> a crash in executor.

Good catch, thanks!  (But a fix like this really requires a comment IMO.)

			regards, tom lane

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