Fix a possible crash in network analyser

qgis · Jan 9, 2018 · 70785f8 · 70785f8
1 parent 67a8902
commit 70785f8
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/analysis/network/qgsgraphanalyzer.cpp b/src/analysis/network/qgsgraphanalyzer.cpp
@@ -24,6 +24,12 @@
 
 void QgsGraphAnalyzer::dijkstra( const QgsGraph *source, int startPointIdx, int criterionNum, QVector<int> *resultTree, QVector<double> *resultCost )
 {
+  if ( startPointIdx < 0 || startPointIdx >= source->vertexCount() )
+  {
+    // invalid start point
+    return;
+  }
+
   QVector< double > *result = nullptr;
   if ( resultCost )
   {