Hello, I have a problem when using TTree::MakeCode() with TLorentzVectors. I define them in the following way: static TLorentzVector *eff_HCMjet07 effTree->Branch("HCMjet07","TLorentzVector",&eff_HCMjet07,bsize,0); It all works nicely, but when I issue an effTree->MakeCode(), out comes lines like effTree->SetBranchAddress("HCMjet07",&TLorentzVector); this is with root 2.23/08 on linuxsuse6. I have found the doing the following change: *** ../../root.2.23/src/TREEPLAYER_TreePlayer.cxx.orig Thu Oct 21 09:53:08 1999 --- ../../root.2.23/src/TREEPLAYER_TreePlayer.cxx Thu Oct 21 10:08:00 1999 *************** *** 1666,1672 **** leafcount =leaf->GetLeafCount(); TBranch *branch = leaf->GetBranch(); if (leafcount) strcpy(branchname,branch->GetName()); ! else strcpy(branchname,leaf->GetTitle()); bname = branchname; while (*bname) {if (*bname == '.') *bname='_'; bname++;} char *brak = strstr(branchname,"["); --- 1666,1672 ---- leafcount =leaf->GetLeafCount(); TBranch *branch = leaf->GetBranch(); if (leafcount) strcpy(branchname,branch->GetName()); ! else strcpy(branchname,leaf->GetName()); bname = branchname; while (*bname) {if (*bname == '.') *bname='_'; bname++;} char *brak = strstr(branchname,"["); Results in the correct behaviour: effTree->SetBranchAddress("HCMjet07",&HCMjet07); Please tell me if I'm fixing a mistake I made in a complex way or whether this is a bug in root. Thanks, Michael -------------------------------------------------------------------------- Michael Sievers Michael.Sievers@desy.de -------------------------------------------------------------------------- esa$ gcc -Wall -o ariane5 ariane4.c ariane4.c: 666: warning: long float implicitly truncated to unsigned type esa$ ariane5
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