diff -r 675ee2eeb3ff -r 7c8709ce6b8f stage3/narrow_candidate_datatypes.hh
--- a/stage3/narrow_candidate_datatypes.hh	Mon Jan 23 12:50:07 2017 +0000
+++ b/stage3/narrow_candidate_datatypes.hh	Tue Jan 24 12:44:44 2017 +0000
@@ -249,6 +249,7 @@
     /* B 1.6 Sequential function chart elements */
     /********************************************/
     void *visit(transition_condition_c *symbol);
+    void *visit(action_qualifier_c     *symbol);
 
     /********************************/
     /* B 1.7 Configuration elements */