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. >> >>
This archive was generated by hypermail 2b29 : Sun Jan 02 2005 - 05:50:10 MET