From 4ed0391ca12e2467a93202d5b35bf864785d169e Mon Sep 17 00:00:00 2001
From: Matt Davenport <mattdavenport@users.noreply.github.com>
Date: Tue, 3 Jan 2023 16:45:02 -0500
Subject: [PATCH] Ensure null values are not passed to trim() (#2889)

---
 app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php b/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php
index 622375b73be..3604bf150e9 100644
--- a/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php
+++ b/app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php
@@ -627,7 +627,7 @@ public function getBackendTable()
             if ($this->isStatic()) {
                 $this->_dataTable = $this->getEntityType()->getValueTablePrefix();
             } else {
-                $backendTable = trim($this->_getData('backend_table'));
+                $backendTable = trim((string)$this->_getData('backend_table'));
                 if (empty($backendTable)) {
                     $entityTable  = [$this->getEntity()->getEntityTablePrefix(), $this->getBackendType()];
                     $backendTable = $this->getResource()->getTable($entityTable);