X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=LrUCwUL1GcBQysJv
	HqlRX2dBW4eP7SDhE4pLH5mw9kqQkecpU4ZntnkLX2ZXN3igIqoNJbAUSgPuL1we
	WA3wmd4jV3WihDmP/BVbuYPHyo3nRyBUt6hsbvEv5ng7YFLnBPUfMdi8oZAFKKjy
	GnntZs2BjYxCrhGtVg8lvHziDD0=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=paAQkPf8XTPdQ7jbI2P0Va
	W3oeA=; b=dqgKLAHYVTIkm8wxqrcv1WKISWB30EzlEKPxa1fJiJflRA1lMxfv+c
	ESjFlvyROK38XvRE4PxBq//FQ/lppCSW0NAeL7YJ7BPb+x/vEC2373RIAii11uxP
	507qZWeFvZzW1A8hBHizqdrMC02zjU0LKQgsJlpTjvdGnYe3ASy30=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-2.7 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 spammy=
X-HELO: limerock01.mail.cornell.edu
X-CornellRouted: This message has been Routed already.
Subject: Re: lint kills _Noreturn
To: cygwin AT cygwin DOT com
References: <6fef0097-c076-2691-c4f9-2af5a050a17e AT cornell DOT edu> <86fut07qha DOT fsf AT gmail DOT com> <9c66686a-0af8-dbfe-7804-797df8aad7c6 AT cornell DOT edu>
From: Ken Brown <kbrown AT cornell DOT edu>
Message-ID: <e4d954bf-4705-f860-7446-289f7ac5903b@cornell.edu>
Date: Sun, 29 May 2016 13:25:33 -0400
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0
MIME-Version: 1.0
In-Reply-To: <9c66686a-0af8-dbfe-7804-797df8aad7c6@cornell.edu>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-PMX-Cornell-Gauge: Gauge=XXXXX
X-IsSubscribed: yes

On 5/29/2016 1:21 PM, Ken Brown wrote:
> On 5/29/2016 12:56 PM, Andy Moreton wrote:
>> On Sun 29 May 2016, Ken Brown wrote:
>>
>>> If lint is defined, then /usr/include/sys/cdefs.h defines _Noreturn
>>> as a macro
>>> that expands to nothing.  Is this intentional?
>>>
>>> Simple test case:
>>>
>>> $ cat test.h
>>> #define lint 1
>>> #include <sys/cdefs.h>
>>> _Noreturn void foo (void);
>>>
>>> $ gcc -E test.h | grep foo
>>>          void foo (void);
>>>
>>>
>>> Ken
>>
>> A traditional lint program may not support the new C11 keywords, but
>> will define the 'lint' symbol. See, e.g.
>>      http://www.unix.com/man-page/FreeBSD/1/lint
>
> But in the present context (see my second message), we're redefining C11
> keywords even though __STDC_VERSION__ >= 201112L.
>
>> Surely the real problem here is a program which is not a lint executable
>> defining 'lint' ?
>
> The program is emacs built from a git checkout of the master branch.  By
> default the configure option --enable-gcc-checking is used, and this

I meant --enable-gcc-warnings.

> causes lint to be defined in src/config.h.  It doesn't seem to be a
> problem on platforms other than Cygwin; or at least it hasn't been
> reported.


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple