X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f
X-Recipient: djgpp AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding;
        bh=tCF21tF5vYzCBE/ZfFv9ndKti6Wed30jeREuX+4KPhg=;
        b=TFVM3pAhBi4oKRQVJM+fsRM9irEljcgxQYWtQasayi1Aao3VEqsd08lA7C/QThy/mf
         CX/KdWTlgRRR0L3fvORCjCM8EPfDTQs5DOcQt+xjYgIhkydSoABWbRMM8Y1LNBuoulDj
         Kuwtu+hcphcC3MmWqWJSApQqNtdMKRQDBJVlpOQn2lKZG0IoUMSRCDxfrUuQkDkNIADM
         RU+c7B4c8gBiZgAswYkNOwsOkqzQOAFdB2XhEIHyYc0xdfdJafSAQlHIzazw96uRx7di
         5z4fPQeRvL1/iXjzIHOIo3dkYJ++2seEHl78UUxGaUqQ1tkLLOSKnhqcrSs9GixojOpd
         ZQhw==
MIME-Version: 1.0
X-Received: by 10.42.205.132 with SMTP id fq4mr14119457icb.33.1433573125349;
 Fri, 05 Jun 2015 23:45:25 -0700 (PDT)
In-Reply-To: <55727FED.7060509@iki.fi>
References: <55673F0B DOT 1090103 AT iki DOT fi>
	<83twuwwshg DOT fsf AT gnu DOT org>
	<55675040 DOT 9030008 AT iki DOT fi>
	<556F6E49 DOT 8010006 AT gmx DOT de>
	<556FCCDF DOT 7080005 AT iki DOT fi>
	<83bngvr0ef DOT fsf AT gnu DOT org>
	<557078B1 DOT 9040004 AT iki DOT fi>
	<201506041613 DOT t54GDT8m014488 AT delorie DOT com>
	<5570B1F7 DOT 1070509 AT iki DOT fi>
	<83pp5aprqw DOT fsf AT gnu DOT org>
	<mks4nl$1o8$1 AT speranza DOT aioe DOT org>
	<834mmmp7f0 DOT fsf AT gnu DOT org>
	<mksolp$uta$1 AT dont-email DOT me>
	<83zj4enfns DOT fsf AT gnu DOT org>
	<55727FED DOT 7060509 AT iki DOT fi>
Date: Sat, 6 Jun 2015 09:45:25 +0300
Message-ID: <CAA2C=vB9Vi7BCNV8X7Lz4F092SSn0MV4g=xT6oJ2Oo=rJKV1ig@mail.gmail.com>
Subject: Re: __STRICT_ANSI__ and errno.h definitions [WAS: Re: DJGPP v2.05:
 some thoughts]
From: "Ozkan Sezer (sezeroz AT gmail DOT com)" <djgpp AT delorie DOT com>
To: djgpp AT delorie DOT com
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id t566jUHG008897
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On 6/6/15, Andris Pavenis (andris DOT pavenis AT iki DOT fi) <djgpp AT delorie DOT com> wrote:
> On 06/05/2015 10:01 PM, Eli Zaretskii (eliz AT gnu DOT org) wrote:
>>> From: Nick Bowler <nbowler AT draconx DOT ca>
>>> Date: Fri, 5 Jun 2015 18:10:01 +0000 (UTC)
>>>
>>> On Fri, 05 Jun 2015 17:16:19 +0300, Eli Zaretskii (eliz AT gnu DOT org) wrote:
>>>>> From: Martin Str|mberg <ams AT ludd DOT luth DOT se>
>>>>> Date: Fri, 5 Jun 2015 12:29:43 +0000 (UTC)
>>>>>
>>>>> But, IIRC, C99 (or even perhaps C89) reserved any symbol starting with
>>>>> E.
>>>> Where do you see such language in C99?  I don't see it, and neither do
>>>> I see it in C11.  But maybe I'm missing something, it's not like I've
>>>> read the entire document top to bottom.
>>> Names starting with E followed by a digit or an uppercase letter are
>>> reserved if <errno.h> is included.
>> I don't see this text in the standard.
>>
>>> C99§7.5p4 Errors <errno.h>:
>>>
>>>    Additional macro definitions, beginning with E and a digit or E and
>>>    an uppercase letter, may also be specified by the implementation.
>>>
>>> This text was copied unchanged into C11.  I am quite sure it was also
>>> present in C89.
>> It's indeed present in C89, but I don't see how it reserves these
>> names.
>>
>>
>>
> It says that implementation may specify additional macro definitions
> according to these restrictions
> (begins with E and followed by either digit or capital letter) and that
> should not be considered as
> standard
> violation. From other side also not adding additional definitions is OK
> according to standard as
> far as I
> understand. So current DJGPP implementation does not violate standard.
>
> We are however free add these macros even when __STRICT_ANSI__ is defined.
>
> Tried for MINGW ( Konsole outpu gcc version 5.1.0 20150422 (Fedora MinGW
> 5.1.0-1.fc22) (GCC)):
>
> Konsole output
> [andris AT ap usr]$ echo "#include <errno.h>" | i686-w64-mingw32-gcc -x c
> -std=c89 - -E -dD | egrep
> --color=never '^#define\ E'
> #define EPERM 1
> #define ENOENT 2
> #define ENOFILE ENOENT
> #define ESRCH 3
> #define EINTR 4
> #define EIO 5
> #define ENXIO 6
> #define E2BIG 7
> #define ENOEXEC 8
> #define EBADF 9
> #define ECHILD 10
> #define EAGAIN 11
> ......
>
> One is also getting the same behavior for Linux ( Konsole outpugggg gcc
> version 5.1.1 20150422 (Red
> Hat 5.1.1-1) (GCC))
> ):
>
> Konsole output
> [andris AT ap usr]$ echo "#include <errno.h>" | gcc -x c -std=c89 - -E -dD |
> egrep --color=never
> '^#define\ E'
> #define EPERM 1
> #define ENOENT 2
> #define ESRCH 3
> #define EINTR 4
> #define EIO 5
> #define ENXIO 6
> #define E2BIG 7
> #define ENOEXEC 8
> #define EBADF 9
> #define ECHILD 10
> #define EAGAIN 11
> .......
>
> For DJGPP we're getting:
> Konsole output
> [andris AT ap usr]$ echo "#include <errno.h>" | i586-pc-msdosdjgpp-gcc -x c
> -std=c89 - -E -dD | egrep
> --color=never '^#define\ E'
> #define EDOM 1
> #define ERANGE 2
>
> [andris AT ap usr]$ echo "#include <errno.h>" | i586-pc-msdosdjgpp-gcc -x c
> -std=c11 - -E -dD | egrep
> --color=never '^#define\ E'
> #define EDOM 1
> #define ERANGE 2
> #define EILSEQ 41
>
> Konsole output
> [andris AT ap usr]$ echo "#include <errno.h>" | i586-pc-msdosdjgpp-gcc -x c
> -std=c1x - -E -dD | egrep
> --color=never '^#define\ E'
> #define EDOM 1
> #define ERANGE 2
> #define EILSEQ 41
>
> As the result I would vote for removal of excluding additional macros when
> __STRICT_ANSI__ is defined.
>
> Andris

Yes please

--
O.S.