Re: Why generic definitions of char_traits were removed from libstdc++3?

[James Su <suzhe at gnuchina dot org>]

Hi,
Will this situation be changed in future libstdc++? If the generic 
definitions of char_traits will come back into libstdc++?
Thank you very much.

James Su

Gabriel Dos Reis wrote:

> James Su <suzhe@gnuchina.org> writes:
>
> Hi,
>
> | Hello,
> |     Recently, I moved one of my projects from gcc-2.95.3 to gcc-3.2 and 
> | my project cannot successfully compiled anymore. The reason is the 
> | generic definitions of char_traits were removed from libstdc++3, and my 
> | project uses basic_string<unsigned long>.
>
> Hmm, how bad...
>
> |     How can I resolve this problem?
>
> There were several discussions about this issue.  You might want to
> read the thread around 
>  http://gcc.gnu.org/ml/libstdc++/2002-08/msg00096.html
>
> | Can I define char_traits<unsigned long> within my program?
>
> You can do that, but then technically you're invoking an undefined
> behaviour.  There is no gurantee that it will work with other
> standard library implementations or future versions of V3.
>
> |  And how
> | can I maintain compatiblity of my  
> | program under deferent environments?
>
> See the other messages of Benjamin's and mine in the thread around
>
>  http://gcc.gnu.org/ml/libstdc++/2002-08/msg00260.html
>
> for possible ways to maintain compatibility within V3 and other
> vendors.
>
> -- Gaby
>
>
>