[ROOT] TChain::merge opens a X socket??

From: Stefano Lacaprara (Stefano.Lacaprara@pd.infn.it)
Date: Fri Jul 12 2002 - 20:03:34 MEST 

Hi,
  I've written a simple program which takes a list of Trees and merge them in
a TChain object

int main(int argc, char **argv)
{
  TROOT loop("loop","Loop on events");

  char* datasetname="";
  if(argc>=2) datasetname = argv[1];

  //Reset ROOT and connect tree file
  TChain dataset("MuonRecoTree");

  FILE *filelist = fopen(datasetname,"r");
  char line[80];

  while(fscanf(filelist,"%s",&line)>0)
    dataset.Add(line);

  fclose(filelist);
  dataset.Merge("dataset.root");
  dataset.Print();
}
where the first argument is the name of a file which contains the list of
trees to be merged.

Running it on a remote host behind a firewall, I've noticed that the issue
of TChain::Merge tries to open a X connection to my machine: this fails and
the process aborts. If the socket can be opened, then the merging is ok.

Why (and who -) it tries to open a X connection? Does it make sense?

Cheers,
  Stefano Lacaprara

-- 
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