From 6d16fac703d4787a876516af02f923d6c98b7a6b Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 16 Mar 2021 12:16:39 +0100
Subject: [PATCH] [DI] accept null index in #[TaggedItem]

---
 .../DependencyInjection/Attribute/TaggedItem.php         | 2 +-
 .../Tests/Compiler/PriorityTaggedServiceTraitTest.php    | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/DependencyInjection/Attribute/TaggedItem.php b/src/Symfony/Component/DependencyInjection/Attribute/TaggedItem.php
index b7ba825ae8..a848e68d63 100644
--- a/src/Symfony/Component/DependencyInjection/Attribute/TaggedItem.php
+++ b/src/Symfony/Component/DependencyInjection/Attribute/TaggedItem.php
@@ -20,7 +20,7 @@ namespace Symfony\Component\DependencyInjection\Attribute;
 class TaggedItem
 {
     public function __construct(
-        public string $index,
+        public ?string $index = null,
         public ?int $priority = null,
     ) {
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
index 1ef1521b7d..bd3b82d64f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/PriorityTaggedServiceTraitTest.php
@@ -205,6 +205,9 @@ class PriorityTaggedServiceTraitTest extends TestCase
                 HelloNamedService::class => (new ChildDefinition(''))->addTag('my_custom_tag'),
                 \stdClass::class => (new ChildDefinition(''))->addTag('my_custom_tag2'),
             ]);
+        $container->register('service3', HelloNamedService2::class)
+            ->setAutoconfigured(true)
+            ->addTag('my_custom_tag');
 
         (new ResolveInstanceofConditionalsPass())->process($container);
 
@@ -212,6 +215,7 @@ class PriorityTaggedServiceTraitTest extends TestCase
 
         $tag = new TaggedIteratorArgument('my_custom_tag', 'foo', 'getFooBar');
         $expected = [
+            'service3' => new TypedReference('service3', HelloNamedService2::class),
             'hello' => new TypedReference('service2', HelloNamedService::class),
             'service1' => new TypedReference('service1', FooTagClass::class),
         ];
@@ -235,3 +239,8 @@ class PriorityTaggedServiceTraitImplementation
 class HelloNamedService extends \stdClass
 {
 }
+
+#[TaggedItem(priority: 2)]
+class HelloNamedService2
+{
+}