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-rw-r--r--decoder/ff.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/decoder/ff.h b/decoder/ff.h
index 6c22d39f..227787ca 100644
--- a/decoder/ff.h
+++ b/decoder/ff.h
@@ -27,6 +27,7 @@ typedef std::vector<WordID> Features; // set of features ids
// depends on context, you may also need to implement
// FinalTraversalFeatures(...)
class FeatureFunction {
+ friend class ExternalFeature;
public:
std::string name_; // set by FF factory using usage()
bool debug_; // also set by FF factory checking param for immediate initial "debug"