Hello,
I can't read TEventLists written prior to 2.26 with the current
version of root. Please have a look at the following example
* Version 2.26/00 11 December 2000 *
root [0] TFile f(".list/dat99_data-0-0-0-187pb_2jD.list")
TKey Reading 122 bytes at address 7131
root [1] .ls
TFile** .list/dat99_data-0-0-0-187pb_2jD.list
TFile* .list/dat99_data-0-0-0-187pb_2jD.list
KEY: TEventList l2jD;1 l2jD
root [2] TEventList *l = (TEventList *)gROOT->FindObject("l2jD");
TKey Reading 6927 bytes at address 204
Creating StreamerInfo for class: TNamed, version: 1
StreamerInfo for class: TNamed, version=1
BASE TObject offset= 0 type=66 Basic ROOT object
TString fName offset= 12 type=65 object identifier
TString fTitle offset= 20 type=65 object title
i= 0, TObject type= 66, offset= 0, len=1, method=0
i= 1, fName type= 65, offset= 12, len=1, method=265386232
i= 2, fTitle type= 65, offset= 20, len=1, method=265386412
StreamerInfo, class:TNamed, name=TObject, fType[0]=66, TStreamerBase, bufpos=57
StreamerInfo, class:TNamed, name=fName, fType[1]=65, TStreamerString, bufpos=67
StreamerInfo, class:TNamed, name=fTitle, fType[2]=65, TStreamerString, bufpos=118
ReadBuffer for class: TNamed has read 0 bytes
OBJ: TEventList jDl2jD
R__v:1
fN:118947840
fSize:119078912
Fatal in <operator new>: storage exhausted
aborting
and aborting at fList = new Int_t[fSize]; in TEventList::Streamer
//====process old versions before automatic schema evolution
b.ReadVersion(&R__s, &R__c);
TNamed::Streamer(b);
TNamed::Print();
b >> fN;
b >> fSize;
b >> fDelta;
cout << "R__v:" << R__v << endl;
cout << "fN:" << fN << endl;
cout << "fSize:" << fSize << endl;
if (fN) {
fList = new Int_t[fSize];
b.ReadFastArray(fList,fN);
}
The data read from the file seem to be misinterpreted before b>> fN;
already.
I'm running root on Debian/ppc and ia32 with the same result.
libc6-2.2 and gcc-2.95.2
The file can be found at
http://darbujan.fzu.cz/~masik/dat99_data-0-0-0-187pb_2jD.list
and seems to be ok in 2.25-03
Thanks in advance for your help.
Jiri
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