1 files changed, 2 insertions, 0 deletions
diff --git a/trie.h b/trie.h
index 77d0020f..9acbe300 100644
--- a/trie.h
+++ b/trie.h
@@ -49,4 +49,6 @@ FREE_F(TRIE(TYPE));
 int TRIE_DOT(TYPE) (  TRIE(TYPE)*, FILE* );
 int TRIE_DOT_HELP(TYPE) ( TRIE_NODE(TYPE)*, FILE* );
 
+int EMPTY(TRIE(TYPE))(TRIE(TYPE)*);
+
 #endif /* TYPE */