Index: apertium/trx_reader.cc
===================================================================
--- apertium/trx_reader.cc	(revision 23557)
+++ apertium/trx_reader.cc	(working copy)
@@ -276,7 +276,14 @@
           if(td.getFinals().find(*it) == td.getFinals().end())
           {
             td.getFinals()[*it] = count;
-          }       
+          }
+	  else
+	  {
+	    wcerr << L"Warning: (" << xmlTextReaderGetParserLineNumber(reader);
+	    wcerr << L"): "
+		  << L"Paths to rule " << count << " blocked by rule " << td.getFinals()[*it]
+		  << L"." << endl;
+	  }
         }
       }
     }