diff -r 1d83209aabfe -r 6510ee2eaab9 stage3/lvalue_check.hh
--- a/stage3/lvalue_check.hh	Sat Apr 21 17:42:07 2012 +0200
+++ b/stage3/lvalue_check.hh	Mon Apr 23 16:44:05 2012 +0100
@@ -50,6 +50,7 @@
     int error_count;
     int current_display_error_level;
     std::vector <token_c *> control_variables;
+    symbol_c *current_il_operand;
 
     void verify_is_lvalue              (symbol_c *lvalue);
     void check_assignment_to_controlvar(symbol_c *lvalue);
@@ -99,8 +100,6 @@
     void *visit(STN_operator_c *symbol);
     void *visit(S_operator_c *symbol);
     void *visit(R_operator_c *symbol);
-    void *visit(S1_operator_c *symbol);
-    void *visit(R1_operator_c *symbol);
 
     /***************************************/
     /* B.3 - Language ST (Structured Text) */