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Date:      Wed, 3 May 2017 13:34:25 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Alan Somers <asomers@freebsd.org>
Cc:        Ngie Cooper <yaneurabeya@gmail.com>,  "src-committers@freebsd.org" <src-committers@freebsd.org>,  "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,  "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r317755 - head/sbin/ifconfig
Message-ID:  <CANCZdfpgUif9STteK=W3Pr0D9UqkPqU9edZqXLfLyoD5d=UPag@mail.gmail.com>
In-Reply-To: <CAOtMX2hbiXAna_UxMonf1Drqx3PkzW2%2BToezai%2BQ32VYq_DXSg@mail.gmail.com>
References:  <201705031721.v43HL2vS071819@repo.freebsd.org> <8EA7A2E9-A429-4DC2-85CE-1B5AAEDF86FD@gmail.com> <CAOtMX2hbiXAna_UxMonf1Drqx3PkzW2%2BToezai%2BQ32VYq_DXSg@mail.gmail.com>

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On Wed, May 3, 2017 at 1:32 PM, Alan Somers <asomers@freebsd.org> wrote:
> On Wed, May 3, 2017 at 12:16 PM, Ngie Cooper <yaneurabeya@gmail.com> wrote:
>>
>>> On May 3, 2017, at 10:21, Alan Somers <asomers@FreeBSD.org> wrote:
>>>
>>> Author: asomers
>>> Date: Wed May  3 17:21:01 2017
>>> New Revision: 317755
>>> URL: https://svnweb.freebsd.org/changeset/base/317755
>>>
>>> Log:
>>>  Various Coverity fixes in ifconfig(8)
>>
>> ...
>>
>>>  * Mark usage() as _Noreturn (1305806, 1305750)
>>
>> ...
>>
>>> -static    void usage(void);
>>> +static    void usage(void) _Noreturn;
>>
>> Hi Alan,
>>     Please use __dead2 instead to be consistent with legacy use of similar gcc attributes.
>> Thanks,
>> -Ngie
>
> Why not use _Noreturn?  It's standardized by C11, so tools understand
> it better than __dead2.

Tools that can't understand #define __dead2 _Noreturn aren't worth supporting.

Warner



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