Program: 95487
Project: 95487
Buggy source:
/** 
 * {@inheritDoc}
 */
protected void extendValidate(JobConfiguration job,StringBuilder errorMsgs,StringBuilder errorInvalidArgsMsg){
  if (job.getProjectName() == null) {
    appendError(errorMsgs,ClientTestStrings.PROJECT,ClientTestStrings.PROJECT_NAME);
  }
  if (job.getProjectVersion() == null) {
    appendError(errorMsgs,ClientTestStrings.PROJECT_VERSION,ClientTestStrings.PROJECT_VERSION_EX);
  }
  if (job.getProjectVersion() != null && job.getProjectVersion().getMajorNumber() == null && job.getProjectVersion().getVersionQualifier() == null) {
    appendValidationError(errorInvalidArgsMsg,ClientTestStrings.PROJECT_VERSION,ClientTestStrings.PROJECT_VERSION_EX);
  }
  if (job.getPort() == Constants.INVALID_VALUE) {
    appendError(errorMsgs,ClientTestStrings.PORT,ClientTestStrings.PORT_NUMBER);
  }
  if ((job.getServer() != null) && (job.getPort() == 0)) {
    appendError(errorMsgs,ClientTestStrings.PORT,ClientTestStrings.PORT_NUMBER);
  }
  if (job.getAutConfigName() == null && job.getAutId() == null && job.getTestJobName() == null) {
    appendError(errorMsgs,ClientTestStrings.AUT_CONFIG,ClientTestStrings.AUT_CONFIG);
    appendError(errorMsgs,ClientTestStrings.AUT_ID,ClientTestStrings.AUT_ID);
  }
  if (job.getTestSuiteNames().isEmpty() && job.getTestJobName() == null) {
    appendError(errorMsgs,ClientTestStrings.TESTSUITE,ClientTestStrings.TESTSUITE);
    appendError(errorMsgs,ClientTestStrings.TESTJOB,ClientTestStrings.TESTJOB);
  }
  if (job.getTimeout() < 0) {
    appendError(errorMsgs,ClientTestStrings.TIMEOUT,ClientTestStrings.TIMEOUT);
  }
  if ((!StringUtils.isEmpty(job.getNoRunOptMode())) && (job.getNoRunOptMode().equals(TestExecutionConstants.EXIT_INVALID_ARGUMENT))) {
    appendValidationError(errorInvalidArgsMsg,ClientStrings.NORUN,ClientStrings.NORUN_MODE);
  }
  if ((!StringUtils.isEmpty(job.getFileName())) && (job.getFileName().equals(TestExecutionConstants.EXIT_INVALID_ARGUMENT))) {
    appendValidationError(errorInvalidArgsMsg,ClientStrings.RESULT_NAME,ClientStrings.RESULT_NAME);
  }
}

Fixed version (ground truth):
/** 
 * {@inheritDoc}
 */
protected void extendValidate(JobConfiguration job,StringBuilder errorMsgs,StringBuilder errorInvalidArgsMsg){
  if (job.getProjectName() == null) {
    appendError(errorMsgs,ClientTestStrings.PROJECT,ClientTestStrings.PROJECT_NAME);
  }
  if (job.getProjectVersion() == null) {
    appendError(errorMsgs,ClientTestStrings.PROJECT_VERSION,ClientTestStrings.PROJECT_VERSION_EX);
  }
  if (job.getProjectVersion() != null && job.getProjectVersion().getMajorNumber() == null && job.getProjectVersion().getVersionQualifier() == null) {
    appendValidationError(errorInvalidArgsMsg,ClientTestStrings.PROJECT_VERSION,ClientTestStrings.PROJECT_VERSION_EX);
  }
  if (job.getPort() == Constants.INVALID_VALUE) {
    appendError(errorMsgs,ClientTestStrings.PORT,ClientTestStrings.PORT_NUMBER);
  }
  if (job.getIterMax() == Constants.INVALID_VALUE) {
    appendError(errorMsgs,ClientTestStrings.ITER_MAX,ClientTestStrings.ITER_MAX);
  }
  if ((job.getServer() != null) && (job.getPort() == 0)) {
    appendError(errorMsgs,ClientTestStrings.PORT,ClientTestStrings.PORT_NUMBER);
  }
  if (job.getAutConfigName() == null && job.getAutId() == null && job.getTestJobName() == null) {
    appendError(errorMsgs,ClientTestStrings.AUT_CONFIG,ClientTestStrings.AUT_CONFIG);
    appendError(errorMsgs,ClientTestStrings.AUT_ID,ClientTestStrings.AUT_ID);
  }
  if (job.getTestSuiteNames().isEmpty() && job.getTestJobName() == null) {
    appendError(errorMsgs,ClientTestStrings.TESTSUITE,ClientTestStrings.TESTSUITE);
    appendError(errorMsgs,ClientTestStrings.TESTJOB,ClientTestStrings.TESTJOB);
  }
  if (job.getTimeout() < 0) {
    appendError(errorMsgs,ClientTestStrings.TIMEOUT,ClientTestStrings.TIMEOUT);
  }
  if ((!StringUtils.isEmpty(job.getNoRunOptMode())) && (job.getNoRunOptMode().equals(TestExecutionConstants.EXIT_INVALID_ARGUMENT))) {
    appendValidationError(errorInvalidArgsMsg,ClientStrings.NORUN,ClientStrings.NORUN_MODE);
  }
  if ((!StringUtils.isEmpty(job.getFileName())) && (job.getFileName().equals(TestExecutionConstants.EXIT_INVALID_ARGUMENT))) {
    appendValidationError(errorInvalidArgsMsg,ClientStrings.RESULT_NAME,ClientStrings.RESULT_NAME);
  }
}