Index: generic/xotclInt.h
===================================================================
diff -u -rcedbcd6a70c433f37525ad01e254895b600db08b -r018ced50b0b8139c67310d99f9541e933b7a1f2d
--- generic/xotclInt.h	(.../xotclInt.h)	(revision cedbcd6a70c433f37525ad01e254895b600db08b)
+++ generic/xotclInt.h	(.../xotclInt.h)	(revision 018ced50b0b8139c67310d99f9541e933b7a1f2d)
@@ -603,6 +603,7 @@
 
 #define XOTCL_CSC_CALL_IS_NEXT 1
 #define XOTCL_CSC_CALL_IS_DESTROY 2
+#define XOTCL_CSC_CALL_IS_GUARD 4
 
 typedef struct XOTclCallStack {
   XOTclCallStackContent content[MAX_NESTING_DEPTH];