Re: [Boost-users] lexical_cast question

From: Hansi (hansipet_at_[hidden])
Date: 2008-05-27 09:06:14

Alexander Nasonov schrieb:
> Hansi <hansipet <at> web.de> writes:
> 
>> It works now for pointers too, but now I have the problem with the char 
>> type. First I have made a specialization for this type. Is it here also 
>> possible to make only one specialization or have I to provide both for 
>> pointer and value?
> 
> I wonder what your Validator validates? You seem to be mixing values and 
> pointers which is not a good idea.

At the moment I mix references and pointers. I know that it would be 
better to not use pointers. But there are cases where it is easier to 
use it. In this cases it is allways != NULL
There are made a few more checks with the validator (ranges, possible 
values e.g.).

> 
> BTW,
> 
> http://www.boost.org/doc/libs/1_35_0/libs/conversion/lexical_cast.htm#changes
> 
> "The previous version of lexical_cast allowed unsafe and meaningless 
> conversions to pointers. The current version now throws a bad_lexical_cast for 
> conversions to pointers: lexical_cast<char *>("Goodbye, World") now throws an 
> exception instead of causing undefined behavior."
> 
> --
> Alexander