void a();
void b();
void c();
void d();

int main(void) {
  a();
  d();
}

void a() {
  b();
}

void b() {
  c();
}

void c() {
}

void d() {
  d();
}
/*
----------------------------------------------
bool CyclomaticAnalysis::runOnSCC(const std::vector< CallGraphNode * > &SCC)
{
  for(CGIterator I = SCC.begin(); I != SCC.end(); ++I)
  {
    Function* F = (*I)->getFunction();
    llvm::cerr << ( F ? F->getName() : "null" ) << "\n";
  }
  llvm::cerr << "END OF COMPONENT" << "\n";
  return false;
}
----------------------------------------------
Abteil -time-passes test.bc
null
END OF COMPONENT
main
END OF COMPONENT
a
END OF COMPONENT
b
END OF COMPONENT
c
END OF COMPONENT
d
END OF COMPONENT
null
END OF COMPONENT
*/