Re: Shortcoming in CLOBBER_FREED_MEMORY coverage: disk buffer pointers

From: Noah Misch <noah(at)leadboat(dot)com>
To: Peter Geoghegan <pg(at)heroku(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Shortcoming in CLOBBER_FREED_MEMORY coverage: disk buffer pointers
Date: 2015-01-25 09:31:33
Message-ID: 20150125093133.GA3263576@tornado.leadboat.com
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On Sat, Jan 24, 2015 at 01:48:43PM -0800, Peter Geoghegan wrote:
> On Sat, Jan 24, 2015 at 1:31 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > Another idea is to teach Valgrind that whenever a backend reduces its
> > pin count on a shared buffer to zero, that buffer should become undefined
> > memory.
>
> That should be fairly straightforward to implement.

+1

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