exit (EXIT_FAILURE);
xexit (EXIT_FAILURE);
as_fatal (format, va_alist)     char *format;     va_dcl{  va_list args;  as_show_where ();  va_start (args);  fprintf (stderr, "Fatal error: ");  vfprintf (stderr, format, args);  (void) putc ('\n', stderr);  va_end (args);  exit (EXIT_FAILURE);}				/* as_fatal() */