bool
do_seek(stab, pos, whence)
STAB *stab;
long pos;
int whence;
{
    register STIO *stio;

    if (!stab)
	goto nuts;

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

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

    return fseek(stio->ifp, pos, whence) >= 0;

nuts:
    if (dowarn)
	warn("seek() on unopened file");
    errno = EBADF;
    return FALSE;
}