Program: 62870
Project: 62870
Buggy source:
public boolean isNameVisibleTo(FeedbackResponseCommentAttributes comment,FeedbackResponseAttributes response,String userEmail,CourseRoster roster){
  List<FeedbackParticipantType> showNameTo=comment.showGiverNameTo;
  if (userEmail.equals(comment.giverEmail)) {
    return true;
  }
  String responseGiverTeam="String_Node_Str";
  if (roster.getStudentForEmail(response.giverEmail) != null) {
    responseGiverTeam=roster.getStudentForEmail(response.giverEmail).team;
  }
  String responseRecipientTeam="String_Node_Str";
  if (roster.getStudentForEmail(response.recipientEmail) != null) {
    responseRecipientTeam=roster.getStudentForEmail(response.recipientEmail).team;
  }
  String currentUserTeam="String_Node_Str";
  if (roster.getStudentForEmail(userEmail) != null) {
    currentUserTeam=roster.getStudentForEmail(userEmail).team;
  }
  for (  FeedbackParticipantType type : showNameTo) {
    if (type == FeedbackParticipantType.GIVER && userEmail.equals(response.giverEmail)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.INSTRUCTORS && roster.getInstructorForEmail(userEmail) != null) {
      return true;
    }
 else     if (type == FeedbackParticipantType.RECEIVER && userEmail.equals(response.recipientEmail)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.OWN_TEAM_MEMBERS && responseGiverTeam.equals(currentUserTeam)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.RECEIVER_TEAM_MEMBERS && responseRecipientTeam.equals(currentUserTeam)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.STUDENTS && roster.getStudentForEmail(userEmail) != null) {
      return true;
    }
  }
  return false;
}

Fixed version (ground truth):
public boolean isNameVisibleTo(FeedbackResponseCommentAttributes comment,FeedbackResponseAttributes response,String userEmail,CourseRoster roster){
  List<FeedbackParticipantType> showNameTo=comment.showGiverNameTo;
  if (showNameTo == null) {
    return true;
  }
  if (userEmail.equals(comment.giverEmail)) {
    return true;
  }
  String responseGiverTeam="String_Node_Str";
  if (roster.getStudentForEmail(response.giverEmail) != null) {
    responseGiverTeam=roster.getStudentForEmail(response.giverEmail).team;
  }
  String responseRecipientTeam="String_Node_Str";
  if (roster.getStudentForEmail(response.recipientEmail) != null) {
    responseRecipientTeam=roster.getStudentForEmail(response.recipientEmail).team;
  }
  String currentUserTeam="String_Node_Str";
  if (roster.getStudentForEmail(userEmail) != null) {
    currentUserTeam=roster.getStudentForEmail(userEmail).team;
  }
  for (  FeedbackParticipantType type : showNameTo) {
    if (type == FeedbackParticipantType.GIVER && userEmail.equals(response.giverEmail)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.INSTRUCTORS && roster.getInstructorForEmail(userEmail) != null) {
      return true;
    }
 else     if (type == FeedbackParticipantType.RECEIVER && userEmail.equals(response.recipientEmail)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.OWN_TEAM_MEMBERS && responseGiverTeam.equals(currentUserTeam)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.RECEIVER_TEAM_MEMBERS && responseRecipientTeam.equals(currentUserTeam)) {
      return true;
    }
 else     if (type == FeedbackParticipantType.STUDENTS && roster.getStudentForEmail(userEmail) != null) {
      return true;
    }
  }
  return false;
}