fp->_Mode |= 0x200 /* _MERR */;
#elif defined __MINT__ /* Atari FreeMiNT */
fp->__error = 1;
+#elif defined EPLAN9 /* Plan9 */
+ if (fp->state != 0 /* CLOSED */)
+ fp->state = 5 /* ERR */;
#elif 0 /* unknown */
/* Portable fallback, based on an idea by Rich Felker.
Wow! 6 system calls for something that is just a bit operation!