--- lalr1.java	2011-02-14 15:21:30.000000000 +0100
+++ lalr1-patched.java	2011-02-14 15:30:24.000000000 +0100
@@ -120,7 +120,7 @@
   private ]b4_location_type[ yylloc (YYStack rhs, int n)
   {
     if (n > 0)
-      return new ]b4_location_type[ (rhs.locationAt (1).begin, rhs.locationAt (n).end);
+      return new ]b4_location_type[ (rhs.locationAt (n-1).begin, rhs.locationAt (0).end);
     else
       return new ]b4_location_type[ (rhs.locationAt (0).end);
   }]])[