[aspectc-user] Re: Aspect C++ and Symbian Error

Marti Bayo-alemany malemany at nero.com
Mon Sep 12 09:52:04 CEST 2005


I have found the same definition on the stdlib headers of MSVC6 and MSCV7, 
they are probably also cutting the Gordian knot.
The solution is to keep two different headers one to compile the program and 
one for the transformation with ac++.
Just a stdlib with a commented typedef for ac++ and a stdlib for 
compilation. The typedef is really needed for compilation.

best wishes,

----- Original Message ----- 
From: "Olaf Spinczyk" <Olaf.Spinczyk at informatik.uni-erlangen.de>
To: "Marti Bayo-alemany" <malemany at nero.com>
Cc: <aspectc-user at aspectc.org>
Sent: Friday, September 09, 2005 10:00 AM
Subject: Re: [aspectc-user] Re: Aspect C++ and Symbian Error

> Hi again,
> I haven't found an email with a solution :-(. However, I looked into an 
> old version of this Symbian header file. There I found the typedef and an 
> interesting comment by the Symbian developers..
> /* There seems to be a lot of nonsense about _need_wchar_t etc., but for
>  * STDLIB we have cut the Gordian knot and done the simple thing
>  */
> In my opinion, cutting the Gordian knot was not a good idea ;-) as in C++ 
> normally wchar_t is a keyword.
> BTW, g++ 3.3 also reports the typedef as an error:
> limits.c:5: error: redeclaration of C++ built-in type `wchar_t'
> As a workaround you can either modify this file (remove the typedef) or 
> create a modified copy that is locate in a directory, which is searched 
> first by ac++.
> Maybe a macro would also help:
> #define wchar_t symbian_wchar_t
> (no guarantee)
> Regarding ac++ we'll have to find out which compiler versions tolerate 
> such a typedef and if we can integrate this behavior, e.g. in the g++-2.95 
> mode.
> -Olaf
> Olaf Spinczyk wrote:
>> Hi,
>> the problem is that this peace of code is not standard compliant. wchar_t 
>> is a keyword in C++. Therefore, this typedef is similar to something like
>> typedef int long;
>> which also makes no sense.
>> I remember that we have already had this problem in the symbian header 
>> files some time ago. I'll search my emails and post the solution as soon 
>> as possible.
>> Could you meanwhile check if there is an #ifdef around this typedef? 
>> Something like #ifdef __HAVE_BUILTIN_WCHAR_T.
>> Best regards,
>> Olaf
>> Marti Bayo-alemany wrote:
>>> Hi All,
>>> You should have all the same problem with the stddef.h headers for 
>>> MSVC6, MSVC7.
>>>  best wishes,
>>> Marti
>>>     ----- Original Message -----
>>>     *From:* Marti Bayo-alemany <mailto:malemany at nero.com>
>>>     *To:* aspectc-user at aspectc.org <mailto:aspectc-user at aspectc.org>
>>>     *Sent:* Thursday, September 08, 2005 7:12 PM
>>>     *Subject:* Aspect C++ and Symbian Error
>>>     Hi all,
>>>          I get the following error from ac++ when trying to compile with 
>>> stddef
>>>     C:/Symbian/7.0s/Series60_v20/Epoc32/include/libc/stddef.h:13: error:
>>>     `signed' or `unsigned' invalid for given type            The 
>>> offending line of code is ...
>>>     typedef unsigned short int wchar_t;
>>>          any idea how to work around that ?
>>>          best wishes,
>>>     Marti
>>> ------------------------------------------------------------------------
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