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Date: Thu, 4 Jun 2015 13:40:46 -0700
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Subject: Re: DJGPP v2.05: some thoughts
From: "Louis Santillan (lpsantil AT gmail DOT com)" <djgpp AT delorie DOT com>
To: "djgpp AT delorie DOT com" <djgpp AT delorie DOT com>
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This was my bug report from a couple weeks ago.  The work around is to
use the "gnu" variants of the standards (e.g., `-std=gnu++11`, etc.).
At least with the djgpp headers as they stand today.

On Thu, Jun 4, 2015 at 1:26 PM, Ozkan Sezer (sezeroz AT gmail DOT com)
<djgpp AT delorie DOT com> wrote:
> On 6/4/15, Andris Pavenis (andris DOT pavenis AT iki DOT fi) <djgpp AT delorie DOT com> wrote:
>> On 06/04/2015 07:13 PM, DJ Delorie wrote:
>>>> Yes, I suggested it and posted suggestion to get some feedback. I
>>>> took however Your notice that it would change building other
>>>> packages into account. I guess we need to get 2.05 out (2.03 is
>>>> simply already too ancient) and we do not need another eternal
>>>> beta. That's why I would prefer not to integrate changes into 2.05.
>>> And I added that a quick 2.05 followed by a 2.06 was OK (and better
>>> than a multi-year beta)
>>>
>>> It's a side-effect of Charles's Law.  If we ship an official 2.05,
>>> we'll actually hear about the bugs, and can fix them in 2.06.
>>>
>>>
>> Branch is created for v2.05.
>>
>> Shortly after that found a showstopper bug:
>>
>> Konsole output
>> echo '#include <iostream>' | i586-pc-msdosdjgpp-gcc -c -x c++ -std=c++11 -
>> -o /dev/null
>>
>> (hint: replace i586-pc-msdosdjgpp-gcc with simple gcc for native build)
>>
>> Works OK with with -std=c++03, fails with -std=c++11 and -std=c++14
>>
>> The problem is that our errno.h gets almost completely excluded
>>
>> Andris
>>
>> PS. following seems to workaround the problem:
>>
>> Konsole output
>> --- errno.h.orig        2015-06-04 23:12:46.745892048 +0300
>> +++ errno.h     2015-06-04 23:13:13.382210708 +0300
>> @@ -25,7 +25,7 @@
>>
>> #endif /* (__STDC_VERSION__ >= 199901L) || !__STRICT_ANSI__ */
>>
>> -#ifndef __STRICT_ANSI__
>> +#if !defined(__STRICT_ANSI__) || defined(__cplusplus)
>>
>> #define E2BIG          3
>> #define EACCES         4
>>
>
> Do we really have to confine those errnos to !__STRICT_ANSI__ ?