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-rw-r--r--include/rtdef.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/rtdef.h b/include/rtdef.h
index f4949c2dff..39deb47d9f 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -367,7 +367,8 @@ typedef struct rt_object *rt_object_t; /**< Type for kernel obj
*/
enum rt_object_class_type
{
- RT_Object_Class_Thread = 0, /**< The object is a thread. */
+ RT_Object_Class_Null = 0, /**< The object is not used. */
+ RT_Object_Class_Thread, /**< The object is a thread. */
RT_Object_Class_Semaphore, /**< The object is a semaphore. */
RT_Object_Class_Mutex, /**< The object is a mutex. */
RT_Object_Class_Event, /**< The object is a event. */