diff -r 551fe1af03b0 -r 3a11a667af75 src/Tools/Code/code_scala.ML
--- a/src/Tools/Code/code_scala.ML	Thu Sep 02 14:59:28 2010 +0200
+++ b/src/Tools/Code/code_scala.ML	Thu Sep 02 15:09:51 2010 +0200
@@ -317,7 +317,8 @@
         val implicits = filter (is_classinst o Graph.get_node program)
           (Graph.imm_succs program name);
       in union (op =) implicits end;
-    fun modify_stmt (_, Code_Thingol.Datatypecons _) = NONE
+    fun modify_stmt (_, Code_Thingol.Fun (_, (_, SOME _))) = NONE
+      | modify_stmt (_, Code_Thingol.Datatypecons _) = NONE
       | modify_stmt (_, Code_Thingol.Classrel _) = NONE
       | modify_stmt (_, Code_Thingol.Classparam _) = NONE
       | modify_stmt (_, stmt) = SOME stmt;