Program: 15673
Project: 15673
Buggy source:
private static Date parseXSDateTime_parseMatcher(String dateTimeStr,Matcher m,TimeZone defaultTZ,CalendarFieldsToDateConverter calToDateConverter) throws DateParseException {
  try {
    try {
      int year=parseXS_groupToInt(m.group(1),"String_Node_Str",Integer.MIN_VALUE,Integer.MAX_VALUE);
      int era;
      if (year <= 0) {
        era=GregorianCalendar.BC;
        year=-year;
      }
 else {
        era=GregorianCalendar.AD;
      }
      int month=parseXS_groupToInt(m.group(2),"String_Node_Str",1,12) - 1;
      int day=parseXS_groupToInt(m.group(3),"String_Node_Str",1,31);
      int hours=parseXS_groupToInt(m.group(4),"String_Node_Str",0,24);
      boolean hourWas24;
      if (hours == 24) {
        hours=0;
        hourWas24=true;
      }
 else {
        hourWas24=false;
      }
      int minutes=parseXS_groupToInt(m.group(5),"String_Node_Str",0,59);
      int secs=parseXS_groupToInt(m.group(6),"String_Node_Str",0,60);
      int millisecs=parseXS_groupToMillisecond(m.group(7));
      TimeZone tz=parseXS_parseTimeZone(m.group(8),defaultTZ);
      if (hourWas24) {
        if (minutes == 0 && secs == 0) {
          day++;
        }
 else {
          throw new DatePartParseException("String_Node_Str" + "String_Node_Str");
        }
      }
      return calToDateConverter.calculate(era,year,month,day,hours,minutes,secs,millisecs,tz);
    }
 catch (    IllegalArgumentException e) {
      throw new DatePartParseException("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    }
  }
 catch (  DatePartParseException e) {
    throw parseXSDateTime_newExc(dateTimeStr,e.getMessage());
  }
}

Fixed version (ground truth):
private static Date parseXSDateTime_parseMatcher(String dateTimeStr,Matcher m,TimeZone defaultTZ,CalendarFieldsToDateConverter calToDateConverter) throws DateParseException {
  NullArgumentException.check("String_Node_Str",defaultTZ);
  try {
    try {
      int year=parseXS_groupToInt(m.group(1),"String_Node_Str",Integer.MIN_VALUE,Integer.MAX_VALUE);
      int era;
      if (year == 0) {
        throw new DateParseException(MSG_YEAR_0_NOT_ALLOWED);
      }
      if (year < 0) {
        era=GregorianCalendar.BC;
        year=-year;
      }
 else {
        era=GregorianCalendar.AD;
      }
      int month=parseXS_groupToInt(m.group(2),"String_Node_Str",1,12) - 1;
      int day=parseXS_groupToInt(m.group(3),"String_Node_Str",1,31);
      int hours=parseXS_groupToInt(m.group(4),"String_Node_Str",0,24);
      boolean hourWas24;
      if (hours == 24) {
        hours=0;
        hourWas24=true;
      }
 else {
        hourWas24=false;
      }
      int minutes=parseXS_groupToInt(m.group(5),"String_Node_Str",0,59);
      int secs=parseXS_groupToInt(m.group(6),"String_Node_Str",0,60);
      int millisecs=parseXS_groupToMillisecond(m.group(7));
      TimeZone tz=parseXS_parseTimeZone(m.group(8),defaultTZ);
      if (hourWas24) {
        if (minutes == 0 && secs == 0) {
          day++;
        }
 else {
          throw new DatePartParseException("String_Node_Str" + "String_Node_Str");
        }
      }
      return calToDateConverter.calculate(era,year,month,day,hours,minutes,secs,millisecs,tz);
    }
 catch (    IllegalArgumentException e) {
      throw new DatePartParseException("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    }
  }
 catch (  DatePartParseException e) {
    throw parseXSDateTime_newExc(dateTimeStr,e.getMessage());
  }
}