Program: 184835
Project: 184835
Buggy source:
/** 
 * Handles certain "corner cases" for CNAP. When we receive weird phone numbers from the network to indicate different number presentations, convert them to expected number and presentation values within the CallerInfo object.
 * @param number number we use to verify if we are in a corner case
 * @param presentation presentation value used to verify if we are in a corner case
 * @return the new String that should be used for the phone number
 */
static String modifyForSpecialCnapCases(Context context,CallerInfo ci,String number,int presentation){
  if (ci == null || number == null)   return number;
  if (DBG)   log("String_Node_Str" + number + "String_Node_Str"+ presentation);
  if (number.equals(context.getString(R.string.absent_num))) {
    number=context.getString(R.string.unknown);
    ci.numberPresentation=Connection.PRESENTATION_UNKNOWN;
  }
  if (ci.numberPresentation == Connection.PRESENTATION_ALLOWED || ci.numberPresentation != presentation) {
    int cnapSpecialCase=checkCnapSpecialCases(number);
    if (cnapSpecialCase != CNAP_SPECIAL_CASE_NO) {
      if (cnapSpecialCase == Connection.PRESENTATION_RESTRICTED) {
        number=context.getString(R.string.private_num);
      }
 else       if (cnapSpecialCase == Connection.PRESENTATION_UNKNOWN) {
        number=context.getString(R.string.unknown);
      }
      if (DBG)       log("String_Node_Str" + number + "String_Node_Str"+ cnapSpecialCase);
      ci.numberPresentation=cnapSpecialCase;
    }
  }
  if (DBG)   log("String_Node_Str" + number);
  return number;
}

Fixed version (ground truth):
/** 
 * Handles certain "corner cases" for CNAP. When we receive weird phone numbers from the network to indicate different number presentations, convert them to expected number and presentation values within the CallerInfo object.
 * @param number number we use to verify if we are in a corner case
 * @param presentation presentation value used to verify if we are in a corner case
 * @return the new String that should be used for the phone number
 */
static String modifyForSpecialCnapCases(Context context,CallerInfo ci,String number,int presentation){
  if (ci == null || number == null)   return number;
  if (DBG)   log("String_Node_Str" + number + "String_Node_Str"+ presentation);
  if (number.equals(context.getString(R.string.absent_num)) && presentation == Connection.PRESENTATION_ALLOWED) {
    number=context.getString(R.string.unknown);
    ci.numberPresentation=Connection.PRESENTATION_UNKNOWN;
  }
  if (ci.numberPresentation == Connection.PRESENTATION_ALLOWED || (ci.numberPresentation != presentation && presentation == Connection.PRESENTATION_ALLOWED)) {
    int cnapSpecialCase=checkCnapSpecialCases(number);
    if (cnapSpecialCase != CNAP_SPECIAL_CASE_NO) {
      if (cnapSpecialCase == Connection.PRESENTATION_RESTRICTED) {
        number=context.getString(R.string.private_num);
      }
 else       if (cnapSpecialCase == Connection.PRESENTATION_UNKNOWN) {
        number=context.getString(R.string.unknown);
      }
      if (DBG)       log("String_Node_Str" + number + "String_Node_Str"+ cnapSpecialCase);
      ci.numberPresentation=cnapSpecialCase;
    }
  }
  if (DBG)   log("String_Node_Str" + number);
  return number;
}