Re: [Boost-users] Serialization of optional<std::string>

Subject: Re: [Boost-users] Serialization of optional<std::string>
From: Robert Ramey (ramey_at_[hidden])
Date: 2018-02-20 16:56:32

On 2/20/18 1:41 AM, Chardrazle via Boost-users wrote:
> Indeed, and my initial workaround was to force that through:
> 
> It may be related to: https://svn.boost.org/trac10/ticket/13108
> (is_default_constructible support.)
> 
> Time to start muddying the waters.
> (Note: the binary archives were taken from the latest serialization 'test'
> code area.)

Your on the right track here.

Note that the boost regression tests

http://www.boost.org/development/tests/develop/developer/serialization.html

show serialization of optional passing with all archives - including the 
binary one.

So it seems that this is an issue related to portable_binary_archive 
which has the status and example not being currently being tested on a 
regular basis.  In theory, the code in archive implementations should be 
totally agnostic to the data type being serialized.  Alas, s*** happens. 
I would recommend tracing with the debugger trough serialization of 
optional<string> in portable binary archive to see how it's different 
from serialization in binary or text archive.

I've been wanting to promote portable_binary_archive to "offically 
supported" status, but I can't justify spending the time.

Robert Ramey