--- a/stage1_2/iec.y	Thu Aug 02 17:53:55 2007 +0200
+++ b/stage1_2/iec.y	Mon Aug 13 18:03:06 2007 +0200
@@ -3716,10 +3716,8 @@
 /* NOTE: the following two clash with the R and S IL operators.
  * It will have to be handled when we include parsing of SFC...
  */
-/*
-| R		{$$ = new identifier_c(strdup("R"));}
-| S		{$$ = new identifier_c(strdup("S"));}
-*/
+| R_operator		{$$ = new qualifier_c(strdup("R"));}
+| S_operator		{$$ = new qualifier_c(strdup("S"));}
 | P		{$$ = new qualifier_c(strdup("P"));}
 ;