#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
return (fp->_flag & (_IORW | _IOREAD)) != 0;
#elif defined __QNX__ /* QNX */
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
return (fp->_flag & (_IORW | _IOREAD)) != 0;
#elif defined __QNX__ /* QNX */