From 1ae4b0559921e44079cd5d780b2f882d4945e424 Mon Sep 17 00:00:00 2001
From: Henning Gruendl <henning.gruendl@qt.io>
Date: Wed, 13 Sep 2023 16:34:30 +0200
Subject: [PATCH] QmlDesigner: Fix crash in Expression Builder

Change-Id: I8ef783c1407f06aea630ce111b3d4f02e195eff5
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
---
 .../qmldesigner/components/connectioneditor/connectionmodel.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/qmldesigner/components/connectioneditor/connectionmodel.cpp b/src/plugins/qmldesigner/components/connectioneditor/connectionmodel.cpp
index 7f0db656005..838e1d587dd 100644
--- a/src/plugins/qmldesigner/components/connectioneditor/connectionmodel.cpp
+++ b/src/plugins/qmldesigner/components/connectioneditor/connectionmodel.cpp
@@ -1815,7 +1815,7 @@ bool ConditionListModel::operatorAllowed(int cursorPosition)
 
     int tokenIdx = cursorPosition - 1;
 
-    if (tokenIdx >= 0 && m_tokens[tokenIdx].type != Operator)
+    if (tokenIdx >= 0 && tokenIdx < m_tokens.length() && m_tokens[tokenIdx].type != Operator)
         return true;
 
     return false;