pb in TTree::MakeCode() ?

From: M. Sievers (sieversm@mail.desy.de)
Date: Thu Nov 25 1999 - 13:45:58 MET


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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