--- Libc/Libc-1158.1.2/include/sys/cdefs.h
+++ Libc/Libc-997.90.3/include/sys/cdefs.h
@@ -117,11 +117,10 @@
  * Libc pthread key assignments
  */
 #define __LIBC_PTHREAD_KEY_XLOCALE	__LIBC_PTHREAD_KEY(0)
-//#define __LIBC_PTHREAD_KEY_RESERVED_WIN64	__LIBC_PTHREAD_KEY(1)
+#define __LIBC_PTHREAD_KEY_TTYNAME	__LIBC_PTHREAD_KEY(1)
 #define __LIBC_PTHREAD_KEY_LOCALTIME	__LIBC_PTHREAD_KEY(2)
 #define __LIBC_PTHREAD_KEY_GMTIME	__LIBC_PTHREAD_KEY(3)
 #define __LIBC_PTHREAD_KEY_GDTOA_BIGINT	__LIBC_PTHREAD_KEY(4)
 #define __LIBC_PTHREAD_KEY_PARSEFLOAT	__LIBC_PTHREAD_KEY(5)
-#define __LIBC_PTHREAD_KEY_TTYNAME	__LIBC_PTHREAD_KEY(6)
 
 #endif /* _LIBC_SYS_CDEFS_H_ */