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Diffstat (limited to 'src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h')
-rw-r--r--src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h b/src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h
index a1fe9285..1f8e83e7 100644
--- a/src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h
+++ b/src/Bipartite_graph_matching/include/gudhi/Persistence_diagrams_graph.h
@@ -71,6 +71,7 @@ private:
static Internal_point get_v_point(int v_point_index);
friend class Naive_pnf;
+ friend class Upper_envelope_tree;
};
/** \internal \typedef \brief Shorter alias */