Re: [Boost-bugs] [Boost C++ Libraries] #10357: archive version --- BOOST_ARCHIVE_VERSION -- change required ?

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10357: archive version --- BOOST_ARCHIVE_VERSION -- change required ?
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-09-15 15:13:28

#10357: archive version --- BOOST_ARCHIVE_VERSION -- change required ?
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  ramey
  ingo.loehken@…         |     Status:  closed
      Type:  Support     |  Component:  serialization
  Requests               |   Severity:  Problem
 Milestone:  To Be       |   Keywords:  archive version, serialization,
  Determined             |  BOOST_ARCHIVE_VERSION, compatible
   Version:  Boost       |
  1.56.0                 |
Resolution:  wontfix     |
-------------------------+-------------------------------------------------
Changes (by ramey):

 * status:  new => closed
 * resolution:   => wontfix

Comment:

 OK

 After a huge problem where by a accidentally changed serialization of some
 internal stuff, I resolved to update the BOOST_ARCHIVE_VERSION every time
 a new version of boost is distributed.

 Note that backwards compatibility (ability of later programs to read older
 formats) is guaranteed.  But Forward compatibility is not (and cannot) be
 guaranteed.

 I get you problem, you want to update the data with the new program while
 the older ones can still access it.  But I can't see a way to do this
 which is not inherently fragile.

 Robert Ramey

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10357#comment:1>
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