- || ((fp->_flags & _IO_NO_READS) == 0
- && (fp->_flags & _IO_CURRENTLY_PUTTING) == 0
- && fp->_IO_read_base != NULL));
-#elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
- return (fp->_flags & __SRD) != 0;
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
+ || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+ && fp->_IO_read_base != NULL));
+# elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
+ return (fp_->_flags & __SRD) != 0;
+# elif defined __EMX__ /* emx+gcc */
+ return (fp->_flags & _IOREAD) != 0;
+# elif defined __minix /* Minix */
+ return (fp->_flags & _IOREADING) != 0;
+# elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
+# if defined __sun /* Solaris */
+ return (fp->_flag & _IOREAD) != 0 && (fp->_flag & _IOWRT) == 0;
+# else