1 files changed, 1 insertions, 0 deletions
diff --git a/decoder/ff_rules.h b/decoder/ff_rules.h
index b100ec34..f210dc65 100644
--- a/decoder/ff_rules.h
+++ b/decoder/ff_rules.h
@@ -51,6 +51,7 @@ class RuleTargetBigramFeatures : public FeatureFunction {
                                      void* context) const;
   virtual void PrepareForInput(const SentenceMetadata& smeta);
  private:
+  std::vector<std::string> inds;
   mutable std::map<const TRule*, SparseVector<double> > rule2_feats_;
 };