Re: [boost] BOOST_DLLEXPORT in serialization

From: Marcus Lindblom (macke_at_[hidden])
Date: 2006-09-18 08:13:03

Damien Fisher wrote:
> On 9/18/06, Robert Ramey <ramey_at_[hidden]> wrote:
>   
>> Note that the only reason for using __declspec on tis platform is
>> that without it, programs compiled in release mode will optimize
>> away code not explicitly referred to.  This breaks serialization
>> of derived pointers.  So this is a hack to work around over-zealous
>> compiler optimizaton.  This has been learned through painful and
>> time consuming experience.  It is possible this solution is overkill
>> in some cases, but there is no way to know without investing
>> a lot more effort.
>>     
>
> If you have the time, could you explain to me exactly what the problem
> is (or show me a program highlighting the problem)?  How can the code
> be needed for serialization if it isn't actually "used" from the
> compiler's point of view?
A quite common problem when dealing with factories and such things. 
'Niftycounters' can be used to counter this, i.e. forcing code in a cpp 
to be referenced by including it's header.

How this applies to serialization is a matter unbeknowns to me though. :)

/Marcus