Nice surprise with C++11

[Daniel Gutson]

Update: confirmed bug. I'll address it during next week.

On Thu, Jul 30, 2015 at 12:26 PM, Daniel Gutson
<daniel.gutson at tallertechnologies.com> wrote:
> On Thu, Jul 30, 2015 at 11:31 AM, Daniel Gutson
> <daniel.gutson at tallertechnologies.com> wrote:
>>
>> El 30/7/2015 11:27, "Joel Sherrill" <joel.sherrill at oarcorp.com> escribió:
>>>
>>>
>>>
>>> On 7/30/2015 9:08 AM, Daniel Gutson wrote:
>>>>
>>>> IOW, I think that the double parens is only for decltype.
>>>
>>>
>>> Historical convention is to put parens around variable names
>>> in macros. What type of impact does this have?
>>
>> If what I think is correct, then the impact os none since this a bug. But I
>> will look at it deeper once I arrive to the office in 1h. I will try with
>> different versions of gcc and clang and look into the C++ standard. So far
>> the (()) seems to be a decltype only thing, so this would be a frontend bug.
>
> As I mentioned in the bugzilla, I think this is a bug of the front-end
> (since I could not reproduce
> it in earlier versions of g++ (4.8.4) and clang (3.5)). I already
> asked Ville Voutilainen and Jens Maurer
> (from the C++ Committee) to look into it. I will let you know.
>
>
>    Daniel.
>
>
>>
>>>
>>>> El 30/7/2015 11:06, escribió:
>>>>
>>>>     I don't it's a language issue: https://ideone.com/k1vz5d
>>>>
>>>>     El 30/7/2015 10:51, "Gedare Bloom" <gedare at gwu.edu
>>>> <mailto:gedare at gwu.edu>> escribió:
>>>>
>>>>         OK, I guess this makes the convention "minimize parentheses"
>>>> mandatory
>>>>         if we want C++11. I guess the basic problem is that constructions
>>>>         where a single atom is in parens may produce different results
>>>> now. At
>>>>         least an error is emitted rather than silent optimization..
>>>>
>>>>         -Gedare
>>>>
>>>>         On Thu, Jul 30, 2015 at 2:49 AM, Sebastian Huber
>>>>         <sebastian.huber at embedded-brains.de
>>>> <mailto:sebastian.huber at embedded-brains.de>> wrote:
>>>>          > Hello,
>>>>          >
>>>>          > please have a look at the following bug:
>>>>          >
>>>>          > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67064
>>>>          >
>>>>          > This is really nice in combination with defines and macros
>>>> that use ( ) to
>>>>          > make sure the content stays together.
>>>>          >
>>>>          > --
>>>>          > Sebastian Huber, embedded brains GmbH
>>>>          >
>>>>          > Address : Dornierstr. 4, D-82178 Puchheim, Germany
>>>>          > Phone   : +49 89 189 47 41-16
>>>>          > Fax     : +49 89 189 47 41-09
>>>>          > E-Mail  : sebastian.huber at embedded-brains.de
>>>> <mailto:sebastian.huber at embedded-brains.de>
>>>>
>>>>          > PGP     : Public key available on request.
>>>>          >
>>>>          > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne
>>>> des EHUG.
>>>>          >
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>>>>
>>>
>>> --
>>> Joel Sherrill, Ph.D.             Director of Research & Development
>>> joel.sherrill at OARcorp.com        On-Line Applications Research
>>> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>> Support Available                (256) 722-9985
>
>
>
> --
>
> Daniel F. Gutson
> Chief Engineering Officer, SPD
>
> San Lorenzo 47, 3rd Floor, Office 5
> Córdoba, Argentina
>
> Phone:   +54 351 4217888 / +54 351 4218211
> Skype:    dgutson
> LinkedIn: http://ar.linkedin.com/in/danielgutson



-- 

Daniel F. Gutson
Chief Engineering Officer, SPD

San Lorenzo 47, 3rd Floor, Office 5
Córdoba, Argentina

Phone:   +54 351 4217888 / +54 351 4218211
Skype:    dgutson
LinkedIn: http://ar.linkedin.com/in/danielgutson