Re: [boost] [serialization] Back Versioning issue

Subject: Re: [boost] [serialization] Back Versioning issue
From: Robert Ramey (ramey_at_[hidden])
Date: 2016-03-02 11:09:39

On 3/2/16 3:51 AM, Janusz Zradomia wrote:

> *We want to ask what is status of this issue and can we expect to fix this
> in near future.*
May I presume there's missing "?" above?

> We would hope that we can do something like;
> Archive ar;
> ar.set_compatibility_boost_version(1, 55);
> ar << ...
>
> We would also need to backport the patch to older version of boost archive,
> so they also can write archives readable by (even older) versions.
>
> In the end we expect to run machines with:
> boost 1.55 (plus patch to set compatibility)
> boost 1.57 (plus patch to set compatibility)
> boost 1.58 (plus patch to set compatibility)
> boost 1.62 (perhaps by default with the set compatibility option)
>
> and each of this computers needs to write archive readable by all other
> versions (set they would all set compatibility to lowest common version).

> Without this functionality we can not use boost archive in this project.

I would not expect boost serialization to ever provide this 
functionality.  It would required a large investment to implement.

> would like to help you test/backport this fix and perhaps even try to code
> it, although we do not yet have any experience in writing code for boost
> library itself.

> Can we expect this functionality to be written in e.g. this year?

No.

Robert Ramey