Re: [boost] [serialization] RTTI issue with non-polymorphic types

Subject: Re: [boost] [serialization] RTTI issue with non-polymorphic types
From: Robert Ramey (ramey_at_[hidden])
Date: 2018-03-05 17:40:23

On 3/5/18 9:03 AM, Jorge Lodos via Boost wrote:
> Hi
> I am trying to use the serialization library for non-polymorphic types
> without RTTI. In release mode everything works fine, but in debug mode there
> are problems because dynamic_cast is used for debugging purposes.
> The code is in smart_cast.hpp, starting in line 87:
> 
>                  #if ! defined(NDEBUG)                               \
>                  || defined(__MWERKS__)
>                      // do a checked dynamic cast
>                      return cross::cast(u);
>                  #else
> 
> I believe the first line could be replaced with:
> 
>                  #if (! defined(NDEBUG) && ! defined(BOOST_NO_RTTI) )  \
> 
> Is this something you are willing to consider? I decided to ask before
> creating any ticket or pull request because there is a number of previous
> attempts to make serialization work without RTTI for the general case.
> But this is specific for non-polymorphic types.
> Thanks.

This as an excellent and useful observation.  I extra efforts to be sure 
that the serialization library worked without RTTI being enabled.  In 
then end I couldn't make it work.  So definitely make a PR or ticket for 
this.  You might want to include an update in the documentation in the 
PR.  Also, since you're put your finger on the issue, maybe there is a 
tweak that could be made so that serialization of polymorphic types 
might be supported as well.

Robert Ramey

> 
> Jorge
> 
> 
> _______________________________________________
> Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
>