calib3d/imgproc: add GCGraph::maxFlow() missing empty checks

2020-10-01 15:20:32 +00:00 · 2020-10-01 15:20:32 +00:00 · c6b63e0e28
commit c6b63e0e28
parent 969b55036f
1 changed files with 2 additions and 0 deletions
--- a/modules/imgproc/src/gcgraph.hpp
+++ b/modules/imgproc/src/gcgraph.hpp
@ -152,6 +152,8 @@ void GCGraph<TWeight>::addTermWeights( int i, TWeight sourceW, TWeight sinkW )
 template <class TWeight>
 TWeight GCGraph<TWeight>::maxFlow()
 {
+    CV_Assert(!vtcs.empty());
+    CV_Assert(!edges.empty());
    const int TERMINAL = -1, ORPHAN = -2;
    Vtx stub, *nilNode = &stub, *first = nilNode, *last = nilNode;
    int curr_ts = 0;