Hi,
I am trying to access the data from the branches of a root file in tree structure. However, when I try to use the GetEntry(0) command, the terminal crashes. This is the message I get. What could be the issue?
*.........................................................................*
root [4] Float_t A,B,C;
root [5] SCD_data->SetBranchAddress("ADC",&A);
root [6] SCD_data->SetBranchAddress("ped",&B);
root [7] SCD_data->SetBranchAddress("ped_rms",&C);
root [8] cout << A << "\t" << B << "\t" << C << endl;
0 0 0
root [9] SCD_data->GetEntry(1);
*** Break *** segmentation violation
===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
gdb.printing.register_pretty_printer(gdb.current_objfile(),
gdb.printing.register_pretty_printer(gdb.current_objfile(),
#0 0x00007f9ef78f460c in waitpid () from /lib64/libc.so.6
#1 0x00007f9ef7871f62 in do_system () from /lib64/libc.so.6
#2 0x00007f9ef83daa6c in TUnixSystem::StackTrace() () from /usr/lib64/root/libCore.so.6.24
#3 0x00007f9ef83dc98a in TUnixSystem::DispatchSignals(ESignals) () from /usr/lib64/root/libCore.so.6.24
#4 <signal handler called>
#5 0x00007f9ef5c91e35 in TBufferFile::ReadFastArray(float*, int) () from /usr/lib64/root/libRIO.so
#6 0x00007f9ee80461f3 in TBranch::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.6.24.06
#7 0x00007f9ee80abaa7 in TTree::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.6.24.06
#8 0x00007f9ef8aea050 in ?? ()
#9 0x00007ffd2fc10a50 in ?? ()
#10 0xa27ae88cf3d2b500 in ?? ()
#11 0x00007ffd2fc10ae0 in ?? ()
#12 0x00000000020b7dc8 in ?? ()
#13 0x0000000001d74290 in ?? ()
#14 0x00007ffd2fc10f50 in ?? ()
#15 0x00007f9ee83103f0 in vtable for TTree () from /usr/lib64/root/libTree.so.6.24.06
#16 0x00007ffd2fc10f50 in ?? ()
#17 0x0000000003460598 in ?? ()
#18 0x00007f9ef0ca499e in cling::IncrementalExecutor::executeWrapper(llvm::StringRef, cling::Value*) const () from /usr/lib64/root/libCling.so
#19 0x00007f9ef0c2d0a0 in cling::Interpreter::RunFunction(clang::FunctionDecl const*, cling::Value*) () from /usr/lib64/root/libCling.so
#20 0x00007f9ef0c2e050 in cling::Interpreter::EvaluateInternal(std::string const&, cling::CompilationOptions, cling::Value*, cling::Transaction**, unsigned long) () from /usr/lib64/root/libCling.so
#21 0x00007f9ef0c2e2f3 in cling::Interpreter::process(std::string const&, cling::Value*, cling::Transaction**, bool) () from /usr/lib64/root/libCling.so
#22 0x00007f9ef0d012b7 in cling::MetaProcessor::process(llvm::StringRef, cling::Interpreter::CompilationResult&, cling::Value*, bool) () from /usr/lib64/root/libCling.so
#23 0x00007f9ef0b5f4ca in HandleInterpreterException(cling::MetaProcessor*, char const*, cling::Interpreter::CompilationResult&, cling::Value*) () from /usr/lib64/root/libCling.so
#24 0x00007f9ef0b72f22 in TCling::ProcessLine(char const*, TInterpreter::EErrorCode*) () from /usr/lib64/root/libCling.so
#25 0x00007f9ef82a479a in TApplication::ProcessLine(char const*, bool, int*) () from /usr/lib64/root/libCore.so.6.24
#26 0x00007f9ef876dd5f in TRint::ProcessLineNr(char const*, char const*, int*) () from /usr/lib64/root/libRint.so.6.24
#27 0x00007f9ef876e0fb in TRint::HandleTermInput() () from /usr/lib64/root/libRint.so.6.24
#28 0x00007f9ef83dbd85 in TUnixSystem::CheckDescriptors() () from /usr/lib64/root/libCore.so.6.24
#29 0x00007f9ef83dd05a in TUnixSystem::DispatchOneEvent(bool) () from /usr/lib64/root/libCore.so.6.24
#30 0x00007f9ef8302e66 in TSystem::InnerLoop() () from /usr/lib64/root/libCore.so.6.24
#31 0x00007f9ef8303de0 in TSystem::Run() () from /usr/lib64/root/libCore.so.6.24
#32 0x00007f9ef82a2b6f in TApplication::Run(bool) () from /usr/lib64/root/libCore.so.6.24
#33 0x00007f9ef876f6b9 in TRint::Run(bool) () from /usr/lib64/root/libRint.so.6.24
#34 0x00000000004008ea in main ()
===========================================================
The lines below might hint at the cause of the crash.
You may get help by asking at the ROOT forum root.cern.ch/forum
Only if you are really convinced it is a bug in ROOT then please submit a
report at root.cern.ch/bugs Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#5 0x00007f9ef5c91e35 in TBufferFile::ReadFastArray(float*, int) () from /usr/lib64/root/libRIO.so
#6 0x00007f9ee80461f3 in TBranch::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.6.24.06
#7 0x00007f9ee80abaa7 in TTree::GetEntry(long long, int) () from /usr/lib64/root/libTree.so.6.24.06
#8 0x00007f9ef8aea050 in ?? ()
#9 0x00007ffd2fc10a50 in ?? ()
#10 0xa27ae88cf3d2b500 in ?? ()
#11 0x00007ffd2fc10ae0 in ?? ()
#12 0x00000000020b7dc8 in ?? ()
#13 0x0000000001d74290 in ?? ()
#14 0x00007ffd2fc10f50 in ?? ()
#15 0x00007f9ee83103f0 in vtable for TTree () from /usr/lib64/root/libTree.so.6.24.06
#16 0x00007ffd2fc10f50 in ?? ()
#17 0x0000000003460598 in ?? ()
#18 0x00007f9ef0ca499e in cling::IncrementalExecutor::executeWrapper(llvm::StringRef, cling::Value*) const () from /usr/lib64/root/libCling.so
#19 0x00007f9ef0c2d0a0 in cling::Interpreter::RunFunction(clang::FunctionDecl const*, cling::Value*) () from /usr/lib64/root/libCling.so
#20 0x00007f9ef0c2e050 in cling::Interpreter::EvaluateInternal(std::string const&, cling::CompilationOptions, cling::Value*, cling::Transaction**, unsigned long) () from /usr/lib64/root/libCling.so
#21 0x00007f9ef0c2e2f3 in cling::Interpreter::process(std::string const&, cling::Value*, cling::Transaction**, bool) () from /usr/lib64/root/libCling.so
#22 0x00007f9ef0d012b7 in cling::MetaProcessor::process(llvm::StringRef, cling::Interpreter::CompilationResult&, cling::Value*, bool) () from /usr/lib64/root/libCling.so
#23 0x00007f9ef0b5f4ca in HandleInterpreterException(cling::MetaProcessor*, char const*, cling::Interpreter::CompilationResult&, cling::Value*) () from /usr/lib64/root/libCling.so
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