threads: introduce THREAD_ID_T_NONE

[model-checker.git] / tree.h

diff --git a/tree.h b/tree.h
index 6d37038e87a42f0c068d6d1e4107ad2b983c9230..676cbe4608923b12de245b947c142a64727bf26c 100644 (file)
--- a/tree.h
+++ b/tree.h
@@ -3,7 +3,7 @@
 #include "threads.h"
 
 typedef thread_id_t tree_t;
-#define TREE_T_NONE    -1
+#define TREE_T_NONE    THREAD_ID_T_NONE
 
 /*
  * An n-ary tree