Loading a user-defined function in ROOT

Hi everybody,
I've subscribed only a few time ago this ML and surely this question has been answered in another thread. I apologize in advance if this is the case. Anyway, I have some problems loading a function written by me; I load the function with

gROOT->LoadMacro("name_of_file_of_my_func")

  with previous versions I used .L to load it. If I'd need to change my function is there a way to unload the old one and load a new one? Till now I load the new one with the same name, hoping to do the right thing but typing

root [56] gROOT->GetListOfGlobalFunctions()->ls()

I had the errors written at the end of the e-mail and I cannot do anything else than kill root from another shell. I've done anything wrong? Is there any workaround?
I'm running a precompiled version of root (v4.00.04 with gcc 3.3.2) on a Linux machine with gcc 3.4.1.

Greets, Germano Percossi

• Break *** segmentation violation Generating stack trace... 0x406470f7 in G__interpret_func + 0x1692 from
  /usr/local/root/lib/libCint.so
  0x4063cc83 in G__compile_bytecode + 0x203 from
  /usr/local/root/lib/libCint.so
  0x406cad05 in G__MethodInfo::GetBytecode() + 0x5d from /usr/local/root/lib/libCint.so 0x4018baff in TFunction::InterfaceMethod() const + 0x31 from /usr/local/root/lib/libCore.so 0x4017a011 in TCint::UpdateListOfGlobalFunctions() + 0x111 from
  /usr/local/root/lib/libCore.so
  0x40139b04 in TROOT::GetListOfGlobalFunctions(bool) + 0xac from
  /usr/local/root/lib/libCore.so
  0x402c7788 in <unknown> from
  /usr/local/root/lib/libCore.so
  0x40656373 in G__call_cppfunc + 0x258 from
  /usr/local/root/lib/libCint.so
  0x40646163 in G__interpret_func + 0x6fe from
  /usr/local/root/lib/libCint.so
  0x4062b1d5 in G__getfunction + 0x12b4 from
  /usr/local/root/lib/libCint.so
  0x406b335a in G__getstructmem + 0x235 from
  /usr/local/root/lib/libCint.so
  0x406aca12 in G__getvariable + 0x4a9 from
  /usr/local/root/lib/libCint.so
  0x406b38c9 in G__getstructmem + 0x7a4 from
  /usr/local/root/lib/libCint.so
  0x406aca12 in G__getvariable + 0x4a9 from
  /usr/local/root/lib/libCint.so
  0x406228fe in G__getitem + 0x5bf from
  /usr/local/root/lib/libCint.so
  0x40621524 in G__getexpr + 0x77ec from
  /usr/local/root/lib/libCint.so
  0x4066bad2 in G__exec_function + 0x1d5 from
  /usr/local/root/lib/libCint.so
  0x40672619 in G__exec_statement + 0x23bd from
  /usr/local/root/lib/libCint.so
  0x4060ab1d in G__exec_tempfile_core + 0x2bd from
  /usr/local/root/lib/libCint.so
  0x4060acee in G__exec_tempfile_fp + 0x22 from
  /usr/local/root/lib/libCint.so
  0x4067a767 in G__process_cmd + 0x471a from
  /usr/local/root/lib/libCint.so
  0x401799bf in TCint::ProcessLine(char const*, TInterpreter::EErrorCode*) + 0xa9 from
  /usr/local/root/lib/libCore.so
  0x400f1470 in TApplication::ProcessLine(char const*, bool, int*) + 0x596 from
  /usr/local/root/lib/libCore.so
  0x40e74f4f in TRint::HandleTermInput() + 0x1dd from /usr/local/root/lib/libRint.so 0x40e73d3a in TTermInputHandler::Notify() + 0x24 from /usr/local/root/lib/libRint.so 0x40e759de in TTermInputHandler::ReadNotify() + 0x12 from /usr/local/root/lib/libRint.so 0x401e6388 in TUnixSystem::CheckDescriptors() + 0xf2 from /usr/local/root/lib/libCore.so 0x401e5bdd in TUnixSystem::DispatchOneEvent(bool) + 0xf7 from
  /usr/local/root/lib/libCore.so
  0x40147df0 in TSystem::InnerLoop() + 0x18 from
  /usr/local/root/lib/libCore.so
  0x40147d95 in TSystem::Run() + 0x6f from
  /usr/local/root/lib/libCore.so
  0x400f2069 in TApplication::Run(bool) + 0x2d from /usr/local/root/lib/libCore.so 0x40e74a2e in TRint::Run(bool) + 0x30a from
  /usr/local/root/lib/libRint.so
  0x08048e45 in main + 0x71 from
  /usr/local/root/bin/root.exe
  0x40fb6ea0 in __libc_start_main + 0xe0 from
  /lib/tls/libc.so.6
  0x08048d45 in TApplicationImp::ShowMembers(TMemberInspector&, char*) + 0x31 from /usr/local/root/bin/root.exe Root > Function Energy() busy flag cleared Function () busy flag cleared Function () busy flag cleared Function () busy flag cleared Function () busy flag cleared Function () busy flag cleared Function () busy flag cleared

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Germano Percossi
University of Rome "Tor Vergata" and INFN Roma2
Via della Ricerca Scientifica 1
I-00133 Rome Italy
Phone     : 06 7259 4824
Room      : c0 28b
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