From c6d1a6f9db94fda5e239e55492fdf4740093a642 Mon Sep 17 00:00:00 2001
From: satalaondrej <satala.ondrej@gmail.com>
Date: Wed, 10 Nov 2021 20:33:30 +0100
Subject: [PATCH] [Serializer] PropertyNormalizer - return unique (i.e. filter
 duplicate ) attributes in extractAttributes function

---
 .../Component/Serializer/Normalizer/PropertyNormalizer.php      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
index 9989c60e40643..8ecd340816698 100644
--- a/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
@@ -119,7 +119,7 @@ protected function extractAttributes($object, $format = null, array $context = [
             }
         } while ($reflectionObject = $reflectionObject->getParentClass());
 
-        return $attributes;
+        return array_unique($attributes);
     }
 
     /**