Hi all,
I’m having issues using the TChain object (root 5.28 on opensuse 11.3). Well, it’s more of an annoyance. From a macro I initialize the TChain, add files to it, read the tree, all is ok (I mean I can do everything with the data), but when the macro finishes, root doesn’t exit normally, but with an error message:
*** glibc detected *** /usr/local/root5.28-gcc/bin/root.exe: free(): invalid next size (fast): 0x0000000000b267e0 ***
and the backtrace pointing to libCint and libCore. Here is my script:
{
Double_t en;
const char fname[50];
TChain tree("results");
for(Int_t m=0;m<=2;m++){
sprintf(fname,"gresults/polar/scattering/cold/107in_%i.root",m);
tree.Add(fname);
}
tree.SetBranchAddress("detector",&en);
Int_t nentries = (Int_t)tree.GetEntries();
cout << "Total number of events: "<<nentries << endl;
}
If I don’t use TChain, but manually loop over the files, reading the trees and so on, everything is ok. Anyone has some ideas what could be the problem?
Gergely
p.s. I just tried this script on my virtual machine with SciLinux5.5 (root 5.27) and it’s working… The main machine is maintained by our IT support, and ROOT passes the official tests