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Re: psql-reader null pointer dereference?


From: Ben Pfaff
Subject: Re: psql-reader null pointer dereference?
Date: Fri, 12 Feb 2010 20:50:38 -0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)

Thanks.  I filed bug #28883.

John Darrington <address@hidden> writes:

> One thing is for sure: that code could use some more comments.
>
> The analyser is correct.  A null pointer dereference could potentially
> occur if the PSQL library server started behaving oddly.  However, this
> feature has some quite comprehensive tests, and there's been no problem 
> so far.
>
> I suggest that we raise a bug about this, so that I can fix it when I 
> get time.
>
> J'
>
> On Thu, Feb 12, 2010 at 10:28:35PM -0800, Ben Pfaff wrote:
>      I ran clang-analyzer (http://clang-analyzer.llvm.org) on the PSPP
>      source tree and here is the report:
>              http://benpfaff.org:8181/
>      
>      Some of the reports are correct.  Others are false positives.  I
>      am not sure about the ones for psql-reader.c (which are all quite
>      similar):
>              http://benpfaff.org:8181/report-5PvYYA.html#EndPath
>              http://benpfaff.org:8181/report-sP82Pb.html#EndPath
>              http://benpfaff.org:8181/report-nSLyIM.html#EndPath
>              http://benpfaff.org:8181/report-h6avCn.html#EndPath
>      
>      They look plausible but I don't understand the code well enough
>      to say for sure.  Can you take a look at those (and any others
>      that you would like to)?
>      -- 
>      "The sound of peacocks being shredded can't possibly be
>       any worse than the sound of peacocks not being shredded."
>      Tanuki the Raccoon-dog in the Monastery

-- 
"Then, I came to my senses, and slunk away, hoping no one overheard my
 thinking."
--Steve McAndrewSmith in the Monastery




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