Program: 39792
Project: 39792
Buggy source:
public static ParsedTemporalDates parse(String rawYear,String rawMonth,String rawDay,String rawDate){
  if (isEmpty(rawYear) && isEmpty(rawDate)) {
    return new ParsedTemporalDates();
  }
  List<IssueType> issueList=new ArrayList<>();
  ChronoAccumulator baseAccumulator=ChronoAccumulator.from(rawYear,rawMonth,rawDay);
  Year year=ChronoAccumulatorConverter.getYear(baseAccumulator,issueList).orElse(null);
  Month month=ChronoAccumulatorConverter.getMonth(baseAccumulator,issueList).orElse(null);
  Integer day=ChronoAccumulatorConverter.getDay(baseAccumulator,issueList).orElse(null);
  Temporal base=TEMPORAL_FUNC.apply(baseAccumulator,issueList);
  ParsedTemporalDates temporalDates=new ParsedTemporalDates(year,month,day,base);
  if (isEmpty(rawDate)) {
    return temporalDates;
  }
  String[] rawPeriod=DelimiterUtils.splitPeriod(rawDate);
  String rawFrom=rawPeriod[0];
  String rawTo=rawPeriod[1];
  ChronoAccumulator fromAccumulator=ParserRawDateTime.parse(rawFrom,null);
  ChronoAccumulator toAccumulator=ParserRawDateTime.parse(rawTo,fromAccumulator.getLastParsed().orElse(null));
  if (fromAccumulator.areAllNumeric() || (!isEmpty(rawTo) && toAccumulator.areAllNumeric())) {
    issueList.add(IssueType.RECORDED_DATE_INVALID);
  }
  if (toAccumulator.getLastParsed().isPresent()) {
    toAccumulator.mergeAbsent(fromAccumulator);
  }
 else {
    fromAccumulator.mergeReplace(baseAccumulator);
  }
  Temporal fromTemporal=TEMPORAL_FUNC.apply(fromAccumulator,issueList);
  Temporal toTemporal=TEMPORAL_FUNC.apply(toAccumulator,issueList);
  if (isValidRange(fromTemporal,toTemporal)) {
    Temporal tmp=fromTemporal;
    fromTemporal=toTemporal;
    toTemporal=tmp;
    issueList.add(IssueType.DAY_OUT_OF_RANGE);
  }
  temporalDates.setFromDate(fromTemporal);
  temporalDates.setToDate(toTemporal);
  temporalDates.setIssueList(issueList);
  return temporalDates;
}

Fixed version (ground truth):
public static ParsedTemporalDates parse(String rawYear,String rawMonth,String rawDay,String rawDate){
  if (isEmpty(rawYear) && isEmpty(rawDate)) {
    return new ParsedTemporalDates();
  }
  List<IssueType> issueList=new ArrayList<>();
  ChronoAccumulator baseAccumulator=ChronoAccumulator.from(rawYear,rawMonth,rawDay);
  Year year=ChronoAccumulatorConverter.getYear(baseAccumulator,issueList).orElse(null);
  Month month=ChronoAccumulatorConverter.getMonth(baseAccumulator,issueList).orElse(null);
  Integer day=ChronoAccumulatorConverter.getDay(baseAccumulator,issueList).orElse(null);
  Temporal base=TEMPORAL_FUNC.apply(baseAccumulator,issueList);
  ParsedTemporalDates temporalDates=new ParsedTemporalDates(year,month,day,base);
  if (isEmpty(rawDate)) {
    return temporalDates;
  }
  String[] rawPeriod=DelimiterUtils.splitPeriod(rawDate);
  String rawFrom=rawPeriod[0];
  String rawTo=rawPeriod[1];
  ChronoAccumulator fromAccumulator=ParserRawDateTime.parse(rawFrom,null);
  ChronoAccumulator toAccumulator=ParserRawDateTime.parse(rawTo,fromAccumulator.getLastParsed().orElse(null));
  if (fromAccumulator.areAllNumeric() || (!isEmpty(rawTo) && toAccumulator.areAllNumeric())) {
    issueList.add(IssueType.RECORDED_DATE_INVALID);
  }
  if (toAccumulator.getLastParsed().isPresent()) {
    toAccumulator.mergeAbsent(fromAccumulator);
  }
 else {
    fromAccumulator.mergeReplace(baseAccumulator);
  }
  Temporal fromTemporal=TEMPORAL_FUNC.apply(fromAccumulator,issueList);
  Temporal toTemporal=TEMPORAL_FUNC.apply(toAccumulator,issueList);
  if (!isValidDateType(fromTemporal,toTemporal)) {
    toTemporal=null;
    issueList.add(IssueType.RECORDED_DATE_INVALID);
  }
  if (!isValidRange(fromTemporal,toTemporal)) {
    Temporal tmp=fromTemporal;
    fromTemporal=toTemporal;
    toTemporal=tmp;
    issueList.add(IssueType.DAY_OUT_OF_RANGE);
  }
  temporalDates.setFromDate(fromTemporal);
  temporalDates.setToDate(toTemporal);
  temporalDates.setIssueList(issueList);
  return temporalDates;
}