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Date:      Tue, 19 Jun 2018 16:56:38 -0700
From:      Eitan Adler <eadler@freebsd.org>
To:        Pedro Giffuni <pfg@freebsd.org>
Cc:        John Baldwin <jhb@freebsd.org>, src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r335278 - head/bin/pwd
Message-ID:  <CAF6rxg=Rbczc_Ns42F7eip-90V-951_%2Bt_-zy-TqwHAeZVEFXg@mail.gmail.com>
In-Reply-To: <da1e77a0-6d07-c731-8c23-c0310cc0b0f3@FreeBSD.org>
References:  <201806170514.w5H5Epts050842@repo.freebsd.org> <77224f10-7633-1122-8099-466f2a35942f@FreeBSD.org> <CAF6rxgnQgb4NNoamBxrraOTBTt-nds-zkb2tdPxWi1=wbouv=g@mail.gmail.com> <4ad7ef96-e623-5ab8-dc47-c3178115ff24@FreeBSD.org> <da1e77a0-6d07-c731-8c23-c0310cc0b0f3@FreeBSD.org>

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On 19 June 2018 at 12:57, Pedro Giffuni <pfg@freebsd.org> wrote:
>
>
> On 19/06/2018 11:25, John Baldwin wrote:
>>
>> On 6/18/18 10:26 PM, Eitan Adler wrote:
>>>
>>> On 18 June 2018 at 10:57, John Baldwin <jhb@freebsd.org> wrote:
>>>>
>>>> On 6/16/18 10:14 PM, Eitan Adler wrote:
>>>>>
>>>>> Author: eadler
>>>>> Date: Sun Jun 17 05:14:50 2018
>>>>> New Revision: 335278
>>>>> URL: https://svnweb.freebsd.org/changeset/base/335278
>>>>>
>>>>> Log:
>>>>>    pwd: mark usage as dead
>>>>
>>>> You keep committing changes like this and ignoring e-mails about them.
>>>
>>> I replied both the first time and this time. I may have
>>> (accidentally?) ignored similar emails though. The question I have is
>>> other than the mild code churn what's the harm?
>>
>> It adds clutter.  Also, fixing the tool means you fix all the places at
>> once rather than slowly adding workarounds one by one.
>>
>>>> What broken compiler are you using that doesn't properly inherit __dead2
>>>> from the call to exit()?
>>>
>>> In this case, scan-build50 was getting annoyed.
>>
>> Does scan-build from LLVM 6.0 handle this correctly?  If so, I'd say to
>> just mark this warning as broken (and thus ignore it) for scan-build50
>> just as we ignore certain warnings from GCC 4.2.1 because they are
>> broken-as-implemented.
>>
> FWIW, clang's scan-build is made to even more false positives and general
> noise than the regular compiler warnings.
> It is better to just ignore it unless it finds something real.

I don't consider this a real harm, but I'll try and remember to ignore
these in the future.

-- 
Eitan Adler
Source, Ports, Doc committer
Bugmeister, Ports Security teams



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