Program: 59804
Project: 59804
Buggy source:
/** 
 * Performs the real reporting of the measurement.
 * @param measurement The measurement to be reported.
 * @throws ReportingException If it was not possible the write the reported data to the result file.
 */
private void realReport(final Measurement measurement) throws ReportingException {
  if (resultNames.isEmpty()) {
    presetResultNames(measurement);
    fileHeaders=getFileHeaders(measurement);
  }
  if (attributesExpected) {
    if (MissingStrategy.SKIP.equals(missingStrategy)) {
      final Set<String> measurementResults=measurement.getAll().keySet();
      final List<String> missingAttributes=resultNames.stream().filter(ea -> !measurementResults.contains(ea)).collect(Collectors.toList());
      if (!missingAttributes.isEmpty()) {
        if (log.isWarnEnabled()) {
          StringBuilder sb=new StringBuilder();
          sb.append("String_Node_Str");
          missingAttributes.forEach(s -> {
            sb.append(s);
            sb.append("String_Node_Str");
          }
);
          sb.append("String_Node_Str");
          log.warn(sb.toString());
        }
        return;
      }
    }
  }
  final StringBuilder sb=new StringBuilder();
  if (linePrefix != null && !linePrefix.isEmpty()) {
    sb.append(linePrefix);
  }
  sb.append(getResultsLine(measurement));
  if (lineSuffix != null && !lineSuffix.isEmpty()) {
    sb.append(lineSuffix);
  }
  sb.append(lineBreak);
  try {
    final boolean csvFileExists=csvFile.exists();
    if (outputChannel == null) {
      outputChannel=FileChannel.open(csvFile.toPath(),csvFileExists ? StandardOpenOption.APPEND : StandardOpenOption.CREATE,StandardOpenOption.WRITE);
    }
    if (!csvFileExists && !skipHeader) {
      sb.insert(0,fileHeaders + lineBreak);
    }
    outputChannel.write(ByteBuffer.wrap(sb.toString().getBytes(Charset.forName(Utils.getDefaultEncoding()))));
  }
 catch (  final IOException ioe) {
    throw new ReportingException(String.format("String_Node_Str",csvFile.getPath()),ioe);
  }
}

Fixed version (ground truth):
/** 
 * Performs the real reporting of the measurement.
 * @param measurement The measurement to be reported.
 * @throws ReportingException If it was not possible the write the reported data to the result file.
 */
private void realReport(final Measurement measurement) throws ReportingException {
  if (resultNames.isEmpty()) {
    presetResultNames(measurement);
    fileHeaders=getFileHeader(measurement);
  }
  if (!expectedAttributesEmpty) {
    if (MissingStrategy.SKIP.equals(missingStrategy)) {
      final Set<String> measurementResults=measurement.getAll().keySet();
      final List<String> missingAttributes=resultNames.stream().filter(ea -> !measurementResults.contains(ea)).collect(Collectors.toList());
      if (!missingAttributes.isEmpty()) {
        if (logTrace) {
          log.trace("String_Node_Str" + missingAttributes.toString() + "String_Node_Str"+ measurement.getAll().toString()+ "String_Node_Str");
        }
        return;
      }
    }
  }
  final StringBuilder sb=new StringBuilder();
  if (linePrefix != null && !linePrefix.isEmpty()) {
    sb.append(linePrefix);
  }
  sb.append(getResultsLine(measurement));
  if (lineSuffix != null && !lineSuffix.isEmpty()) {
    sb.append(lineSuffix);
  }
  sb.append(lineBreak);
  try {
    final boolean csvFileExists=csvFile.exists();
    if (outputChannel == null) {
      outputChannel=FileChannel.open(csvFile.toPath(),csvFileExists ? StandardOpenOption.APPEND : StandardOpenOption.CREATE,StandardOpenOption.WRITE);
    }
    if (!csvFileExists && !skipHeader) {
      sb.insert(0,fileHeaders + lineBreak);
    }
    outputChannel.write(ByteBuffer.wrap(sb.toString().getBytes(Charset.forName(Utils.getDefaultEncoding()))));
  }
 catch (  final IOException ioe) {
    throw new ReportingException(String.format("String_Node_Str",csvFile.getPath()),ioe);
  }
}