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From: Robert Ramey (ramey_at_[hidden])
Date: 2005-09-09 16:45:25

Loïc Joly wrote:
> Robert Ramey a écrit :
>>> Of course, if I replace B const *pc by B *pc, then the code works
>>> correctly.What can I do to serialize pointers to const data ?
>>> Regards,
>> Or you could replace this above with:
>> ar & const_cast<B *>(pc);
>> (or maybe const_cast<B * &>(pc)
> I really do not understand why I would have to do that.
>> But that would override the normal meaning of "const" as applied to
>> a member variable.
> In this case, the member variable is not const. It's not like in
> .
> It's just a non const pointer that refers to a non const class defined
> elsewhere, but that promise not to modify that class himself.

correct. Its a non-const pointer to a const object. But if the object is
const then it is prohibited from being modified. Serialization has no
special privleges in this regard. So loading it traps at compile time -
just as would anyother attempt to modify the object that B is pointing to.

>> You really have to ask yourself what you want serialize to
>> include.

> Could you please explain this point ? I do not understand what you
> mean.

If you want the object pointed to by pc to be modifiable by serializaltion
then it shouldn't be const.

Robert Ramey

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