Program: 8680
Project: 8680
Buggy source:
@Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState){
  View view=inflater.inflate(R.layout.calendar_month,container,false);
  int offset=getArguments().getInt("String_Node_Str");
  List<Day> days=utils.getDays(getContext(),offset);
  char[] digits=utils.preferredDigits(getActivity());
  prev=(IconTextView)view.findViewById(R.id.prev);
  next=(IconTextView)view.findViewById(R.id.next);
  prev.setOnClickListener(this);
  next.setOnClickListener(this);
  PersianDate persianDate=Utils.getToday();
  int month=persianDate.getMonth() - offset;
  month-=1;
  int year=persianDate.getYear();
  year=year + (month / 12);
  month=month % 12;
  if (month < 0) {
    year-=1;
    month+=12;
  }
  month+=1;
  persianDate.setMonth(month);
  persianDate.setYear(year);
  persianDate.setDayOfMonth(1);
  TextView currentMonthTextView=(TextView)view.findViewById(R.id.currentMonthTextView);
  currentMonthTextView.setText(Utils.textShaper(utils.getMonthName(persianDate)));
  TextView currentYearTextView=(TextView)view.findViewById(R.id.currentYearTextView);
  currentYearTextView.setText(Utils.formatNumber(persianDate.getYear(),digits));
  recyclerView=(RecyclerView)view.findViewById(R.id.RecyclerView);
  recyclerView.setHasFixedSize(true);
  layoutManager=new GridLayoutManager(getContext(),7);
  recyclerView.setLayoutManager(layoutManager);
  adapter=new MonthAdapter(getActivity(),this,days);
  recyclerView.setAdapter(adapter);
  calendarMainFragment=(CalendarMainFragment)getActivity().getSupportFragmentManager().findFragmentByTag("String_Node_Str");
  calendarMainFragment.selectDay(Utils.getToday());
  return view;
}

Fixed version (ground truth):
@Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState){
  View view=inflater.inflate(R.layout.calendar_month,container,false);
  int offset=getArguments().getInt("String_Node_Str");
  List<Day> days=utils.getDays(getContext(),offset);
  char[] digits=utils.preferredDigits(getActivity());
  prev=(IconTextView)view.findViewById(R.id.prev);
  next=(IconTextView)view.findViewById(R.id.next);
  prev.setOnClickListener(this);
  next.setOnClickListener(this);
  PersianDate persianDate=Utils.getToday();
  int month=persianDate.getMonth() - offset;
  month-=1;
  int year=persianDate.getYear();
  year=year + (month / 12);
  month=month % 12;
  if (month < 0) {
    year-=1;
    month+=12;
  }
  month+=1;
  persianDate.setMonth(month);
  persianDate.setYear(year);
  persianDate.setDayOfMonth(1);
  TextView currentMonthTextView=(TextView)view.findViewById(R.id.currentMonthTextView);
  currentMonthTextView.setText(Utils.textShaper(utils.getMonthName(persianDate)));
  TextView currentYearTextView=(TextView)view.findViewById(R.id.currentYearTextView);
  currentYearTextView.setText(Utils.formatNumber(persianDate.getYear(),digits));
  recyclerView=(RecyclerView)view.findViewById(R.id.RecyclerView);
  recyclerView.setHasFixedSize(true);
  layoutManager=new GridLayoutManager(getContext(),7);
  recyclerView.setLayoutManager(layoutManager);
  adapter=new MonthAdapter(getActivity(),this,days);
  recyclerView.setAdapter(adapter);
  calendarMainFragment=(CalendarMainFragment)getActivity().getSupportFragmentManager().findFragmentByTag("String_Node_Str");
  if (calendarMainFragment != null) {
    calendarMainFragment.selectDay(Utils.getToday());
  }
  return view;
}