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Re: [Qemu-devel] [BUG] 216 Alerts reported by LGTM for QEMU (some might

From: Peter Maydell
Subject: Re: [Qemu-devel] [BUG] 216 Alerts reported by LGTM for QEMU (some might be release critical)
Date: Sun, 14 Jul 2019 18:30:33 +0100

On Sat, 13 Jul 2019 at 18:46, Stefan Weil <address@hidden> wrote:
> LGTM reports 16 errors, 81 warnings and 119 recommendations:
> https://lgtm.com/projects/g/qemu/qemu/alerts/?mode=list.

I had a look at some of these before, but mostly I came
to the conclusion that it wasn't worth trying to put the
effort into keeping up with the site because they didn't
seem to provide any useful way to mark things as false
positives. Coverity has its flaws but at least you can do
that kind of thing in its UI (it runs at about a 33% fp
rate, I think.) "Analyzer thinks this multiply can overflow
but in fact it's not possible" is quite a common false
positive cause...

Anyway, if you want to fish out specific issues, analyse
whether they're false positive or real, and report them
to the mailing list as followups to the patches which
introduced the issue, that's probably the best way for
us to make use of this analyzer. (That is essentially
what I do for coverity.)

-- PMM

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