From edb08d485dc354ea2d086bfdfebc5572077b997e Mon Sep 17 00:00:00 2001
From: Steven Jones <stjones@tesla.com>
Date: Thu, 3 Feb 2022 10:53:42 -0800
Subject: [PATCH] Prevent get_coordinate_pointers from mutating input
 coordinates

---
 rtree/index.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtree/index.py b/rtree/index.py
index 46bad6b5..a976b28e 100644
--- a/rtree/index.py
+++ b/rtree/index.py
@@ -343,7 +343,7 @@ def get_coordinate_pointers(self, coordinates):
 
         # it's a point make it into a bbox. [x, y] => [x, y, x, y]
         if len(coordinates) == dimension:
-            coordinates += coordinates
+            coordinates = *coordinates, *coordinates
 
         if len(coordinates) != dimension * 2:
             raise core.RTreeError(