Hi Gernot, This problem had already been fixed in the CVS version. Rene Brun On Thu, 15 Aug 2002, Gernot Maier wrote: > Hi rooters, > > I have problems in reading histograms from a subdirectory of a file. > > Execute for example the following test macro: > > void test() > { > TFile *fT = new TFile( "test.root" , "RECREATE" ); > fT->mkdir( "AD" ); > fT->cd( "AD" ); > TH1D **his; > his = new TH1D*[20]; > char hisname[100]; > for( int i = 0; i < 20; i++ ) > { > sprintf( hisname, "his_%d", i ); > his[i] = new TH1D( hisname, hisname, 100., -10., 10. ); > for( int j = 0; j < 100; j++ ) his[i]->Fill( gRandom->Gaus() ); > } > for( int i = 0; i < 20; i++ ) > { > his[i]->Write(); > } > } > > If I open the test.root and change the directory with file->cd("AD") I get > to following error messages: > > Error in <TObjArray::At>: index -20454 out of bounds (size: 13, this: 0x0882d690) > Error in <TObjArray::AddAt>: out of bounds at -20454 in 882d690 > Error in <TBuffer::CheckByteCount>: object of class TUUID read too few bytes: 18 instead of 195839724 > Warning in <TBuffer::CheckByteCount>: TUUID::Streamer() not in sync with data on file, fix Streamer() > > I obtain similar error messages while switching to a subdirectory in a root file, > which was converted by h2root and has about 1000 histograms in that subdirectory. > > I'm using version 3.03/07 on linux and version 3.03/07 on alpha. > > thank you, > > Gernot > > ----- > Gernot Maier KASCADE Collaboration > Institut fuer Kernphysik Tel. +49 (0) 7247 82-4174 > Forschungszentrum Karlsruhe gernot.maier@ik.fzk.de >
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