From da7d8c0d5fd5c61cd376a5537e9ff78b2d060c82 Mon Sep 17 00:00:00 2001
From: Erwin Dirks <e.dirks@kennisnet.nl>
Date: Wed, 23 Feb 2022 18:02:03 +0100
Subject: [PATCH] [Serializer] Fix passing null to str_contains()

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

diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 388ba1037359..5a6d3b78e61d 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -472,7 +472,7 @@ private function validateAndDenormalize(string $currentClass, string $attribute,
             // PHP's json_decode automatically converts Numbers without a decimal part to integers.
             // To circumvent this behavior, integers are converted to floats when denormalizing JSON based formats and when
             // a float is expected.
-            if (Type::BUILTIN_TYPE_FLOAT === $builtinType && \is_int($data) && str_contains($format, JsonEncoder::FORMAT)) {
+            if (Type::BUILTIN_TYPE_FLOAT === $builtinType && \is_int($data) && null !== $format && str_contains($format, JsonEncoder::FORMAT)) {
                 return (float) $data;
             }