__fxprintf (out, "%s", L"%s", prompt);
getpass (prompt)     const char *prompt;{  FILE *in, *out;  struct termios s, t;  int tty_changed;  static char *buf;  static size_t bufsize;  ssize_t nread;  /* Try to write to and read from the terminal if we can.     If we can't open the terminal, use stderr and stdin.  */  in = fopen ("/dev/tty", "w+c");  if (in == NULL)    {      in = stdin;      out = stderr;    }  else    {      /* We do the locking ourselves.  */      __fsetlocking (in, FSETLOCKING_BYCALLER);      out = in;    }  /* Make sure the stream we opened is closed even if the thread is     canceled.  */  __libc_cleanup_push (call_fclose, in == out ? in : NULL);  flockfile (out);  /* Turn echoing off if it is on now.  */  if (__tcgetattr (fileno (in), &t) == 0)    {      /* Save the old one. */      s = t;      /* Tricky, tricky. */      t.c_lflag &= ~(ECHO|ISIG);      tty_changed = (tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &t) == 0);    }  else    tty_changed = 0;  /* Write the prompt.  */#ifdef USE_IN_LIBIO  if (_IO_fwide (out, 0) > 0)    __fwprintf (out, L"%s", prompt);  else#endif    fputs_unlocked (prompt, out);  fflush_unlocked (out);  /* Read the password.  */  nread = __getline (&buf, &bufsize, in);  if (buf != NULL)    {      if (nread < 0)	buf[0] = '\0';      else if (buf[nread - 1] == '\n')	{	  /* Remove the newline.  */	  buf[nread - 1] = '\0';	  if (tty_changed)	    {	      /* Write the newline that was not echoed.  */#ifdef USE_IN_LIBIO	      if (_IO_fwide (out, 0) > 0)		putwc_unlocked (L'\n', out);	      else#endif		putc_unlocked ('\n', out);	    }	}    }  /* Restore the original setting.  */  if (tty_changed)    (void) tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &s);  funlockfile (out);  __libc_cleanup_pop (0);  if (in != stdin)    /* We opened the terminal; now close it.  */    fclose (in);  return buf;}