Thread: segFault

Code:

void hire(FILE **infile, char lineOfText[], struct employee **firstEmployee)
{
  struct employee *newEmployee = NULL;
  struct employee *previousEmployee = NULL;
  struct employee *currentEmployee = NULL;
  
  read(*infile, lineOfText);
  while(lineOfText[ZEROI] != '*')
  {
	allocate(&newEmployee);
	sscanf(lineOfText, "%s%s%d%s",   newEmployee->lastName,
								     newEmployee->firstName,
								     &newEmployee->id,
								     newEmployee->class);
	printf("%s\n", newEmployee->lastName);
	
	if(newEmployee != NULL)
	{
	  previousEmployee = NULL;
	  currentEmployee = *firstEmployee;
	  while((currentEmployee != NULL) && (strcmp(newEmployee->lastName, currentEmployee->lastName) > ZEROI))
	  {
	    previousEmployee = currentEmployee;
		currentEmployee = currentEmployee->nextEmployee;
	  }

I"m getting a seg fault at the while loop, I have determined that this is due to the currentEmployee. setting currentEmployee = to *firstEmployee though I would think would solve this but I'm not getting anywhere.