Carlos, Could you try reading your file with version 4.01/02 (or CVS head)? If you still have the same problem, is it possible to rewrite the file with 4.01/02 and read it with the same version? Rene Brun On Mon, 8 Nov 2004, Carlos Muņoz Camacho wrote: > > The problem is that I get my crash when doing TTree::GetEntry, so I cannot > test what it retuns. I was just wondering I could use some other method to > test the event _before_ doing GetEntry, but maybe this is simply not > possible. > > By the way, I also get messages like the one below which I think indicate > some corrupted event. I would simply like to skip them... > > Carlos > > Warning in <TBasket::ReadBasketBuffers>: basket:event_calo.fARSWaves.fWave > has fNevBuf=1, but fEntryOffset=0, trying to repair > Error in <TBuffer::CheckByteCount>: object of class TDoubleArray read too > few bytes: 20 instead of 10486784 > Error in <TBuffer::CheckByteCount>: Byte count probably corrupted around > buffer position 54586: > 10486784 for a possible maximum of 83828 > > > > On Sun, 7 Nov 2004, Rene Brun wrote: > > >Hi Carlos, > > > >This message is printed when a Tree buffer is corrupted. This may be due > >to several causes > > -corrupted file > > -network problem when reading a remote file > > -basket compression problems with some old versions of ROOT. > > > >In principle, for these cases, you can detect a bad read by testing the > >number of bytes returned by TTree::getEntry or TBranch::GetEntry. > >If null or negative, this corresponds to a read error. > > > >Rene Brun > > > >On > >Sun, 7 Nov 2004, Carlos Muņoz Camacho wrote: > > > >> > >> Hi, > >> > >> I have some events in my root file that for some reason (which I don't > >> might want to find out if possible) crash when I do tree->GetEntry to read > >> them. I would be happy if I could just skip them, as there are only a few > >> of them, so that my program could keep running. Is there a way to test the > >> event is good before getting the tree entry? This is the kind of message > >> I'm getting before crashing > >> > >> R__unzip: error during decompression > >> Error in <TBasket::ReadBasketBuffers>: fNbytes = 18571, fKeylen = 88, > >> fObjlen = 104812, noutot = 0, nout=0, nin=18483, nbuf=104812 > >> Error in <TBranchElement::GetBasket>: File: > >> /work/halla/dvcs/disk2/cosmpa/dvcs_4139_33.root at byte:306243284, > >> branch:(null), entry:167482972 > >> > >> Thanks! > >> > >> Carlos > >> > >> This is ROOT 4.00/08, gcc 3.2.3, on a Linux box. > >> > >> >
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