Re: [Boost-users] [Boost.Serialization] Questions about the NewReleaseof Boost.Serialization 1.36

From: Richard Turrin (richt_at_[hidden])
Date: 2008-01-07 16:46:29

Hi,

I might be able to offer something for (b) and (c) below.  We're experiencing issues here in our development process, serializing in files using version 1.35 of Boost (retrieved on 18 December, 2007 @ 4:09 pm) that were serialized out with version 1.34.1.  We ran a sample test program that crashed when attempting to serialize in from a sample file.  There is a zip file containing this program and a sample data file created using version 1.34.1: http://www.toadsoftware.com/boost/TestBoostSerialize.zip.

There is one caveat: In our development process, we are using Visual Studio 2008 with a two-byte alignment setting.  We also manually built the Boost library from the SVN Trunk with modified abi prefix and suffix header files to use two-byte packing as well.

Let me know if you need more information.  Hope this is useful in some way.

Rich Turrin

On Jan 6, 2008 1:33 PM, Robert Ramey wrote:

> If one can't read older archives, its the result of an oversight on our part.
> 
> In order to help us discover where the oversight occurred the following
> would be helpful.
> 
> a) information as to whether the problem occurs only with binary archives
> or with all types of archives.
> 
> b) Information as to which new version of the serialization library has
> manifested the problem.  It could be the 1.35 in the trunk or it could be
> 1.36 at www.rrsd.com.  Upon reading your post, it has occurred to me that
> a made a change in 1.36 that could cause this behavior so I plan to look into
> this.  But I would like to know if it occurs with 1.35 as well
> 
> c) It would be if you could submit a small test case, including file
> generated with previous version.
> 
> Robert Ramey
>> "Mahesh Venkitachalam" <mkvenkit.vc_at_[hidden]> wrote in message news:6164abb70801052037t7f3cbf62pb8856e893ffa8204_at_mail.gmail.com...
>>
>>> On Jan 5, 2008 11:16 PM, Robert Ramey <ramey_at_[hidden]> wrote:
>>> Format for binary archives has changed starting in 1.35.  My guess is that the changes should should be made conditional on the library version.  I >>> didn't make these changes but I'll see that its looked into.
>>
>>
>> Could you please elaborate on this a bit?
>>
>> I am currently using boost 1.34.0, and am using binary archives. If we release
>> software now that generates binary archives, and at a later stage, if we upgrade the
>> boost version, will we not be able to read back the old binary archives? How do we
>> ensure that on upgrading boost we can still read back old binary archives?
>>
>> Thanks
>>
>> Mahesh