java: fix reduction traces.

	* data/lalr1.java (yy_reduce_print): Fix state index.
	Reported by Tim Landscheidt.

2 files changed, 7 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 70f113f2..faa7e186 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-01-15  Akim Demaille  <demaille@gostai.com>
+
+	java: fix reduction traces.
+	* data/lalr1.java (yy_reduce_print): Fix state index.
+	Reported by Tim Landscheidt.
+
 2012-01-12  Jim Meyering  <meyering@redhat.com>
 
 	build: avoid warning from coverity about lbitset_elt_find
diff --git a/data/lalr1.java b/data/lalr1.java
index 43e9b970..57ff9932 100644
--- a/data/lalr1.java
+++ b/data/lalr1.java
@@ -848,7 +848,7 @@ m4_popdef([b4_at_dollar])])dnl
     /* The symbols being reduced.  */
     for (int yyi = 0; yyi < yynrhs; yyi++)
       yy_symbol_print ("   $" + (yyi + 1) + " =",
-                       yystos_[yystack.stateAt(yyi + 1 - yynrhs)],
+                       yystos_[yystack.stateAt(yynrhs - (yyi + 1))],
                        ]b4_rhs_value(yynrhs, yyi + 1)b4_locations_if([,
                        b4_rhs_location(yynrhs, yyi + 1)])[);
   }