[ROOT] Merge (chain) problem again

From: Luiz Martins Mundim Filho (Luiz.Mundim@cern.ch)
Date: Tue Aug 14 2001 - 09:13:06 MEST


Hi

I have posted a message  about problems when merging ntuple files some 
time ago. Rene Brun  tried to reproduce the problem and did not succeed 
and fortunately, it worked fine for me  also after that. But, right now 
I'm getting the  problem again. Look at the output below:

[lxplus042] /afs/cern.ch/delphi/scratch/m/mundim/wwana > root
  *******************************************
  *                                                                      
            *
  *        W E L C O M E  to  R O O T                          *
  *                                                                     
             *
  *   Version   3.01/06      12 July 2001                        *
  *                                                                     
             *
  *  You are welcome to visit our Web site                 *
  *          http://root.cern.ch                                           *
  *                                                                     
             *
  *******************************************

Compiled with thread support.

CINT/ROOT C/C++ Interpreter version 5.15.06, June 30 2001
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] TChain chain("h2")                                 
root [1] chain.Add("wphact20cc_e206.7_c*.root")             

 *** Break *** segmentation violation
Root >

Now, even the ".q" command to exit works. Before this output, I got two 
other behaviour. First, the chain.Add command read the 100 files, but 
got a segmentation  violation and some others tries, printed out :

root [1] chain.Add("wphact20cc_e206.7_c*.root")
(Int_t)0

All the 100 files are on   the same directory as I called root 
(/afs/cern.ch/delphi/scratch/m/mundim/wwana).

Someone knows why am I getting this strange behaviour. The  worst thing 
is that I can not "always"  reproduce the problem, because sometimes it 
works, some times not, with EXACTLY the same  command, on the same 
machine. I will  keep trying till I  succeed, but some help  will be 
very welcome.

Thank a lot

Luiz



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