LibGUI: Do not recurse into rows with invalid indices

That would cause the traversal to go into an infinite loop.
akimdi · Jul 1, 2020 · 476ccb2 · 476ccb2
1 parent bda39ef
commit 476ccb2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/Libraries/LibGUI/TreeView.cpp b/Libraries/LibGUI/TreeView.cpp
@@ -183,6 +183,9 @@ void TreeView::traverse_in_paint_order(Callback callback) const
  return IterationDecision::Continue;
  }
 
+ if (indent_level > 0 && !index.is_valid())
+ return IterationDecision::Continue;
+
  ++indent_level;
  int row_count = model.row_count(index);
  for (int i = 0; i < row_count; ++i) {