Program: 4889
Project: 4889
Buggy source:
/** 
 * @param hashSet The set of Hashes you want us to make a collection out of.
 * @param URI This collection's schema URI
 * @param fm A pointer to the system wide (Meta)FileManager .
 * @param audio Whether this is a collection of audio files.
 */
public LimeXMLReplyCollection(Set hashSet,String URI,FileManager fm,boolean audio){
  this.schemaURI=URI;
  this.metaFileManager=(MetaFileManager)fm;
  this.audio=audio;
  debug("String_Node_Str" + audio);
  MapSerializer ms=initializeMapSerializer(URI);
  Map hashToXMLStr;
  if (ms == null)   hashToXMLStr=new HashMap();
 else   hashToXMLStr=ms.getMap();
  Iterator iter=hashSet.iterator();
  ID3Reader id3Reader=new ID3Reader();
  while ((iter != null) && iter.hasNext()) {
    File file=(File)iter.next();
    String hash=metaFileManager.readFromMap(file);
    Object xml=hashToXMLStr.get(hash);
    LimeXMLDocument doc=null;
    if ((xml != null) && xml instanceof LimeXMLDocument) {
      doc=(LimeXMLDocument)xml;
    }
 else {
      String xmlStr=(String)xml;
      if (audio && LimeXMLUtils.isMP3File(file)) {
        boolean onlyID3=((xmlStr == null) || xmlStr.equals("String_Node_Str"));
        try {
          if (!onlyID3) {
            try {
              String id3XML=id3Reader.readDocument(file,onlyID3);
              String joinedXML=joinAudioXMLStrings(id3XML,xmlStr);
              doc=new LimeXMLDocument(joinedXML);
            }
 catch (            RuntimeException re) {
              doc=id3Reader.readDocument(file);
            }
          }
 else           doc=id3Reader.readDocument(file);
        }
 catch (        SAXException ignored1) {
          continue;
        }
catch (        IOException ignored2) {
          continue;
        }
catch (        SchemaNotFoundException ignored3) {
          continue;
        }
      }
 else {
        try {
          if ((xmlStr != null) && (!xmlStr.equals("String_Node_Str")))           doc=new LimeXMLDocument(xmlStr);
 else           continue;
        }
 catch (        SAXException ignored1) {
          continue;
        }
catch (        IOException ignored2) {
          continue;
        }
catch (        SchemaNotFoundException ignored3) {
          continue;
        }
      }
    }
    addReply(hash,doc);
  }
  if (hashSet != null)   checkDocuments(hashSet,false);
  debug("String_Node_Str");
  write();
}

Fixed version (ground truth):
/** 
 * @param fileToHash The map of files to hashes for all shared files.
 * @param URI This collection's schema URI
 * @param fm A pointer to the system wide (Meta)FileManager .
 * @param audio Whether this is a collection of audio files.
 */
public LimeXMLReplyCollection(Map fileToHash,String URI,FileManager fm,boolean audio){
  this.schemaURI=URI;
  this.metaFileManager=(MetaFileManager)fm;
  this.audio=audio;
  debug("String_Node_Str" + audio);
  MapSerializer ms=initializeMapSerializer(URI);
  Map hashToXMLStr;
  if (ms == null)   hashToXMLStr=new HashMap();
 else   hashToXMLStr=ms.getMap();
synchronized (fileToHash) {
    Iterator iter=fileToHash.keySet().iterator();
    ID3Reader id3Reader=new ID3Reader();
    while ((iter != null) && iter.hasNext()) {
      File file=(File)iter.next();
      String hash=(String)fileToHash.get(file);
      Object xml=hashToXMLStr.get(hash);
      LimeXMLDocument doc=null;
      if ((xml != null) && xml instanceof LimeXMLDocument) {
        doc=(LimeXMLDocument)xml;
      }
 else {
        String xmlStr=(String)xml;
        if (audio && LimeXMLUtils.isMP3File(file)) {
          boolean onlyID3=((xmlStr == null) || xmlStr.equals("String_Node_Str"));
          try {
            if (!onlyID3) {
              try {
                String id3XML=id3Reader.readDocument(file,onlyID3);
                String joinedXML=joinAudioXMLStrings(id3XML,xmlStr);
                doc=new LimeXMLDocument(joinedXML);
              }
 catch (              RuntimeException re) {
                doc=id3Reader.readDocument(file);
              }
            }
 else             doc=id3Reader.readDocument(file);
          }
 catch (          SAXException ignored1) {
            continue;
          }
catch (          IOException ignored2) {
            continue;
          }
catch (          SchemaNotFoundException ignored3) {
            continue;
          }
        }
 else {
          try {
            if ((xmlStr != null) && (!xmlStr.equals("String_Node_Str")))             doc=new LimeXMLDocument(xmlStr);
 else             continue;
          }
 catch (          SAXException ignored1) {
            continue;
          }
catch (          IOException ignored2) {
            continue;
          }
catch (          SchemaNotFoundException ignored3) {
            continue;
          }
        }
      }
      addReply(hash,doc);
    }
    checkDocuments(fileToHash,false);
  }
  debug("String_Node_Str");
  write();
}