From: "Ulrich Spörlein" <uqs@spoerlein.net>
To: tech@mdocml.bsd.lv
Subject: Re: mdocml version 1.12.0 available
Date: Thu, 13 Oct 2011 11:55:25 +0200 [thread overview]
Message-ID: <20111013095525.GM26743@acme.spoerlein.net> (raw)
In-Reply-To: <20111013005045.GH28987@iris.usta.de>
On Thu, 2011-10-13 at 02:50:45 +0200, Ingo Schwarze wrote:
> Hi Joerg,
>
> Joerg Sonnenberger wrote on Tue, Oct 11, 2011 at 04:56:41PM +0200:
>
> > Attached is the report from clang -analyze. Food for thought ;)
>
> Thanks for sending these.
> Below is a patch to improve style at a few places,
> none of these are bugs, though.
> No regressions according to my tests.
>
> A few more reports are valid, but i suggest to keep those redundant
> initializations because it is non-trivial to figure out that all
> branches actually set a value, so it's safer to initialize up
> front, especially in view of potential future code changes.
>
> Two complaints might be bogus:
>
> > /home/joerg/work/NetBSD/cvs/src/external/bsd/mdocml/bin/mandoc/../../dist/mdoc_term.c:617:7: warning: Access to field 'prev' results in a dereference of a null pointer (loaded from variable 'n')
> > if (n->prev && MDOC_It == n->prev->tok) {
> > ^
> > /home/joerg/work/NetBSD/cvs/src/external/bsd/mdocml/bin/mandoc/../../dist/mdoc_term.c:611:7: warning: Access to field 'prev' results in a dereference of a null pointer (loaded from variable 'n')
> > if (n->prev && MDOC_It == n->prev->tok)
> > ^
>
> I have no idea why clang thinks n might be NULL here.
> Do you understand that?
> Or is this just a false positive?
print_bvspace could have been called with n being NULL. Perhaps the HTML
report is little bit more helpful:
https://www.spoerlein.net/scan-build/mdocml/2011-10-13-1/report-qHe1Tf.html#EndPath
hth
Uli
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next prev parent reply other threads:[~2011-10-13 9:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4E90B130.3080008@bsd.lv>
[not found] ` <20111011145641.GA25314@britannica.bec.de>
2011-10-13 0:50 ` Ingo Schwarze
2011-10-13 9:55 ` Ulrich Spörlein [this message]
2011-10-15 15:02 ` Ingo Schwarze
2011-10-15 18:28 ` Joerg Sonnenberger
2011-10-16 10:35 ` Ingo Schwarze
2011-10-16 11:01 ` Kristaps Dzonsons
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