--- a/stage1_2/iec_bison.yy	Fri Jun 07 11:27:29 2013 +0900
+++ b/stage1_2/iec_bison.yy	Tue Aug 20 17:35:11 2013 +0100
@@ -276,7 +276,7 @@
     long int    last_order;
 } YYLTYPE;
 #define YYLTYPE_IS_DECLARED 1
-#define YYLTYPE_IS_TRIVIAL 1
+#define YYLTYPE_IS_TRIVIAL 0
 #endif
 
 }