Hi,
I have some simple TTrees created with ROOT 5.10/00 that do not contain any specialized class structure - merely branches of simple data types. If I attempt to read this file using ROOT 4.02/00 I receive a number of errors:
root [0] TFile f(“backgnd-GR-v9r3_000001_merit_merit.root”, “READ”)
root [1] TTree t = (TTree)f.Get(“MeritTuple”)
Error in : The element TLeaf::fIsRange type 218 (Bool_t) is not supported yet
Error in : The element TLeaf::fIsUnsigned type 218 (Bool_t) is not supported yet
Error in : object of class TLeaf read too few bytes: 48 instead of 50
Is this expected? At this point this is merely a curiousity…and I realize there probably should be no expectation that earlier versions of ROOT can handle files generated by later versions…while the reverse (reading ROOT 4 files with ROOT 5) would be much more important and seems to work just fine.
Thanks,
Heather