Re: Coverity Open Source Defect Scan of PostgreSQL

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Martijn van Oosterhout <kleptog(at)svana(dot)org>
Cc: Greg Stark <gsstark(at)mit(dot)edu>, ben(at)coverity(dot)com, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Neil Conway <neilc(at)samurai(dot)com>, Andreas Pflug <pgadmin(at)pse-consulting(dot)de>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Coverity Open Source Defect Scan of PostgreSQL
Date: 2006-03-09 13:13:17
Message-ID: 200603091313.k29DDHA25483@candle.pha.pa.us
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Martijn van Oosterhout wrote:
-- Start of PGP signed section.
> On Wed, Mar 08, 2006 at 06:42:45PM -0500, Greg Stark wrote:
> > Ben Chelf <ben(at)coverity(dot)com> writes:
> >
> > > >>>#ifdef STATIC_ANALYSIS
> > > >>>#define ereport(elevel, rest) \
> > > >>> (errstart(elevel, __FILE__, __LINE__, PG_FUNCNAME_MACRO) ? \
> > > >>> (errfinish rest) : (void) 0), (elevel >= ERROR ? exit(0) : 0)
> > > >>>#else
> > > >>>/* Normal def */
> > > >>>#endif
> > >
> > > As for Coverity, if the elevel that's passed to the ereport is really a
> > > constant, the above #ifdef should absolutely do the trick for us so we know to
> > > stop analyzing on that path...Let me know if it doesn't actually do that ;)
> >
> > If you're willing to require elevel to always be a constant then why not just
> > tack on the (elevel >= ERROR ? exit(0) : 0) onto the end of the regular
> > definition of ereport instead of having an ifdef?
>
> Well, the only cost would be a useless call to exit() for each
> elog/ereport with an elevel >= ERROR. It bloats the binary a bit. Not
> sure whether people care enough about that.

We care. :-)

--
Bruce Momjian http://candle.pha.pa.us
SRA OSS, Inc. http://www.sraoss.com

+ If your life is a hard drive, Christ can be your backup. +

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