[Config] Use the empty string instead of null as an array offset

santysisi · santysisi · commit e7ec78725401 · 2025-11-01T16:52:02.000-03:00
diff --git a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
@@ -249,6 +249,6 @@ private function getPrototypeChildren(PrototypedArrayNode $node): array
         }
         $keyNode->setInfo($info);
 
-        return [$key => $keyNode];
+        return [$key ?? '' => $keyNode];
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -249,6 +249,6 @@ private function getPrototypeChildren(PrototypedArrayNode $node): array`
`249`	`249`	`}`
`250`	`250`	`$keyNode->setInfo($info);`
`251`	`251`
`252`		`- return [$key => $keyNode];`
	`252`	`+ return [$key ?? '' => $keyNode];`
`253`	`253`	`}`
`254`	`254`	`}`