__SOFF
if ((fp->_flags & __SOFF)) {
if (t & __SOFF) {
if (fp->_flags & __SOFF)
if (fp->_flags & __SOFF)
if (fp->_flags & __SOFF)
fp->_flags &= ~__SOFF; /* paranoia */
fp->_flags &= ~__SOFF; /* in case FAPPEND mode is set */
fp->_flags &= ~__SOFF;
fp->_flags |= __SOFF;