long
do_tell(stab)
STAB *stab;
{
    register STIO *stio;

    if (!stab)
	goto phooey;

    stio = stab_io(stab);
    if (!stio || !stio->ifp)
	goto phooey;

#ifdef ULTRIX_STDIO_BOTCH
    if (feof(stio->ifp))
	(void)fseek (stio->ifp, 0L, 2);		/* ultrix 1.2 workaround */
#endif

    return ftell(stio->ifp);

phooey:
    if (dowarn)
	warn("tell() on unopened file");
    errno = EBADF;
    return -1L;
}