From 970f518939d0f31fb1d0dd1ee5670d961ae2e08d Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Mon, 15 Jul 2024 06:25:03 -0400
Subject: [PATCH] avoid out of range access

---
 tools/lammps-gui/chartviewer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/lammps-gui/chartviewer.cpp b/tools/lammps-gui/chartviewer.cpp
index 919a3bf5fe..22f8e2f32b 100644
--- a/tools/lammps-gui/chartviewer.cpp
+++ b/tools/lammps-gui/chartviewer.cpp
@@ -138,7 +138,8 @@ void ChartWindow::quit()
 void ChartWindow::reset_zoom()
 {
     int choice = columns->currentData().toInt();
-    charts[choice]->reset_zoom();
+    if ((choice >= 0) && (choice < charts.size()))
+        charts[choice]->reset_zoom();
 }
 
 void ChartWindow::stop_run()