Hello, I am a newcomer to ROOT and using v3.05_03 with gcc2.95.3. I have code which runs (more or less beautifully in another enironment (CERN lxplus), but I am having problems on the DESY AFS machines: I have a method: Double_t ZeusKtAlgo::distanceIJ(const TLorentzVector *pI, const TLorentzVector *pJ) const { Double_t disIJ = 0.; Double_t partIPt2 = pI->Perp2(); Double_t partJPt2 = pJ->Perp2(); Double_t minTraE2 = TMath::Min(partIPt2, partJPt2); // this is still okay cout << pI->Perp2() << ' ' << pJ->Perp2() << ' ' << TMath::Min(pI->Perp2(),pJ->Perp2()) << endl; // these printouts crash cout << TMath::Min(partIPt2, partJPt2) << endl; cout << partIPt2 << endl; cout << partJPt2 << endl; cout << minTraE2 << endl; // no chance to get into this if condition ... if(minTraE2 != 0.) { cout << "mist" << endl; } // cannot return this value return disIJ; } As stated in the piece of code I can do the first printout which accesses the functions themselves, but as soon as I try to assign a value to a variable and access (print ...) this later ... it crashes with some cryptic error message which I print below. I have the following includes: #include <TROOT.h> #include <TObject.h> #include <TObjArray.h> #include <iostream.h> #include <TArrayI.h> #include <TArrayD.h> #include <TLorentzVector.h> #include "ZeusAlgo.h" Does anybody have any idea what I am doing wrong here? Is there some way to get clearer debugging information? Thanks for your help. Cheers, Thomas *** Break *** segmentation violation Generating stack trace... 0x401d52ca in StackTrace__11TUnixSystem + 0x2e6 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x401d3a2f in DispatchSignals__11TUnixSystem8ESignals + 0xc7 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x401d2cd0 in GetSize__C8TWebFile + 0xc4 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x401d6b93 in GetSockOpt__11TUnixSystemiiPi + 0x30f from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40e75e58 in killpg + 0x58 from /lib/libc.so.6 0x40641144 in G__exec_asm + 0x1e4 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405f99e8 in G__exec_bytecode + 0x774 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40604ed6 in G__interpret_func + 0x1082 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40642aa5 in G__exec_asm + 0x1b45 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40633328 in G__exec_loop + 0x50c from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x406338ab in G__exec_for + 0x313 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x406364de in G__exec_statement + 0x2942 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40605fbc in G__interpret_func + 0x2168 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405ea4a7 in G__getfunction + 0x14ef from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4067d313 in G__getstructmem + 0x80f from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40676def in G__getvariable + 0x6bf from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405e2019 in G__getitem + 0x4f9 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so *** Break *** keyboard interrupt FILE:ZeusKtAlgo.C LINE:46 0x405e08e2 in G__getexpr + 0x9092 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4062f1ad in G__exec_function + 0x1a9 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4063679d in G__exec_statement + 0x2c01 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40605fbc in G__interpret_func + 0x2168 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x406909b6 in ExecInterpretedFunc__11G__CallFuncP8G__value + 0xba from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x406907dd in ExecInt__11G__CallFuncPv + 0x8d from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40c865b2 in ProcessCut__13TSelectorCinti + 0x6a from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libTree.so 0x4169bfbb in Process__11TTreePlayerP9TSelectorPCcii + 0x20b from /products/ROOT/3.05_03/gcc-2.95.3/root/lib/libTreePlayer.so 0x4169bcf2 in Process__11TTreePlayerPCcT1ii + 0xba from /products/ROOT/3.05_03/gcc-2.95.3/root/lib/libTreePlayer.so 0x40c8e916 in Process__5TTreePCcT1ii + 0x52 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libTree.so 0x40c7c3e7 in Process__6TChainPCcT1ii + 0x47 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libTree.so 0x40cc0d5c in G__cpp_dllrevG__Tree + 0x1e7b0 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libTree.so 0x40616625 in G__call_cppfunc + 0x291 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40604668 in G__interpret_func + 0x814 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405ea4a7 in G__getfunction + 0x14ef from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4067d313 in G__getstructmem + 0x80f from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x40676def in G__getvariable + 0x6bf from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405e2019 in G__getitem + 0x4f9 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405e08e2 in G__getexpr + 0x9092 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4062f1ad in G__exec_function + 0x1a9 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4063679d in G__exec_statement + 0x2c01 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405c6dd5 in G__exec_tempfile_core + 0x2dd from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x405c6fcd in G__exec_tempfile + 0x25 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4063f3c3 in G__process_cmd + 0x4e8b from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCint.so 0x4018bdc1 in ProcessLine__5TCintPCcPQ212TInterpreter10EErrorCode + 0xa1 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x4018bee3 in ProcessLineSynch__5TCintPCcPQ212TInterpreter10EErrorCode + 0x4f from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40116987 in ProcessFile__12TApplicationPCcPi + 0x6f7 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40116115 in ProcessLine__12TApplicationPCcbPi + 0x565 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40dd1e6b in HandleTermInput__5TRint + 0x197 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libRint.so 0x40dd0f89 in Notify__17TTermInputHandler + 0x29 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libRint.so 0x40dea5d8 in ReadNotify__17TTermInputHandler at /data/gcc-2.95.3/hierhinein/gcc/../../gcc-2.95.3/gcc/cp/new.cc:0 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libRint.so 0x401d3da9 in CheckDescriptors__11TUnixSystem + 0xd9 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x401d35e5 in DispatchOneEvent__11TUnixSystemb + 0xb5 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40161499 in InnerLoop__7TSystem + 0x31 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40161409 in Run__7TSystem + 0x79 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40116bd6 in Run__12TApplicationb + 0x32 from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libCore.so 0x40dd1887 in Run__5TRintb + 0x2df from /products/ROOT/3.05_03/ROOT-linux24-gcc-2.95.3/lib/libRint.so 0x080487f7 in main + 0x83 from /products/ROOT/3.05_03/gcc-2.95.3/root/bin/root.exe 0x40e65c5f in __libc_start_main + 0xcf from /lib/libc.so.6 0x080486a1 in _start + 0x21 from /products/ROOT/3.05_03/gcc-2.95.3/root/bin/root.exe Root > Function Find() busy flag cleared Function distanceIJ() busy flag cleared Function ProcessCut() busy flag cleared +-------------------------------------------------------------------+ | Thomas Schoerner-Sadenius thomas.schoerner@cern.ch | | Universitaet Hamburg, Institut fuer Experimentalphysik | | Luruper Chaussee 149 phone 0049-40-8998-2954 | | D-22761 Hamburg room 67b / 5 | +-------------------------------------------------------------------+
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