Dear ROOTers, I am also experiencing problems with the I/O in version 3.02/06. Somehow writing of instances of one of my private classes fails with 3.02/06 using the new schema evolution, whereas with the old streamer method (i.e. no "+" in the Linkdef.h) everything works correctly. I get the impression that the problem(s) are related to TObject::Clone(), which uses the I/O streamers as far as I understnad. I am still investigating things, but I also think that it would be better to wait a bit before making 3.02/06 the pro version. Cheers, Nick. -- Dr. Nick van Eijndhoven mailto:nick@phys.uu.nl http://www.phys.uu.nl/~nick -------------------------------------------------------------------------- Org.: Utrecht University/Nikhef, Department of Subatomic Physics Address: Princetonplein 5, NL-3584 CC Utrecht, The Netherlands Phone: +31-30-2532331(direct) +31-30-2531492(secr.) Fax: +31-30-2518689 NIKHEF: +31-20-5922178(direct) +31-20-5922000(secr.) Fax: +31-20-5925155 CERN: +41-22-7679751(direct) +41-22-7675857(secr.) Fax: +41-22-7679480 Offices: Buys Ballot lab. 710 (Utrecht) N241 (Nikhef) B23 1-020 (CERN) -------------------------------------------------------------------------- Valeri Fine wrote: > > Hello Rene, > > > We intend to release Root version 3.02/06 this week. This will be the PRO > > release. > > He have discovered several problems with the last version of ROOT from CVS > > 1. We can not read back our files written half year ago (with ROOT 3.00.06) > We have not had any problem to read them with ROOT versions 3.02.00 / 01 > 2. We can not use TChain to read several TTrees' in row (See Bill Love's report) > The macro crashes occasionally > 3. We can not read the new files with TVolume objects, > but we can read the old versions of there files though. > > We are working to understand the reasons of these new problems and will appreciate you > will wait a little with your release. > > Have you any idea what has happened with ROOT i/o recently, that may have affected the > backward compatibility ? > > With my regards, Valeri > ----- > Dr.Valeri Fine > STAR/US Atlas E-mail: fine@bnl.gov > Brookhaven National Lab Phone: +1 631 344 7806 > Upton, NY 11973-5000 FAX: +1 631 344 4206 > USA
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