diff -r 76c3d707ffa1 -r 73b56dc69e61 stage3/constant_folding.hh
--- a/stage3/constant_folding.hh	Thu Sep 13 15:14:55 2012 +0200
+++ b/stage3/constant_folding.hh	Thu Sep 13 16:35:10 2012 +0200
@@ -82,6 +82,11 @@
     void *visit(boolean_true_c *symbol);
     void *visit(boolean_false_c *symbol);
 
+    /************************/
+    /* B 1.2.3.1 - Duration */
+    /********* **************/
+    void *visit(fixed_point_c *symbol);
+
     /****************************************/
     /* B.2 - Language IL (Instruction List) */
     /****************************************/