Re: [ROOT] Problems with the ClassVersionID

From: Rene Brun (Rene.Brun@cern.ch)
Date: Mon Mar 25 2002 - 16:20:45 MET


Hi Pierre,

What do you mean by "When I read my old files just after the new ones" ?
In the same job?
Did you increment the class versionid?
Please provide more info (to me, not the list)

Rene Brun

Pierre Da Silva wrote:
> 
> On Mon, 25 Mar 2002, Rene Brun wrote:
> 
> > Pierre,
> >
> > You are still using the old scheme.
> > We describe the migration procedure from the old Streamers to new Streamers
> > at page 217 of the Users Guide : chapter "Migrating to Root3"
> >
> > You can see an example in ROOT class TAxis at:
> >
> > http://root.cern.ch/root/htmldoc/src/TAxis.cxx.html#TAxis:Streamer
> >
> > Rene Brun
> 
> This is now done, I'm using the new streamers but my problem still exists.
> When I read my old files just after the new ones, the new members should
> have their value equal to 0 (because they don't exist in the old files)
> but this is not the case. If I only read the old files, then I have got
> the good values (0 as expected). Do you have any idea of what's going on?
> 
>                                         Pierre



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