definitions are valid objects

src/Symfony/Component/DependencyInjection/Compiler/CheckTypeDeclarationsPass.php

@@ -152,6 +152,10 @@ final class CheckTypeDeclarationsPass extends AbstractRecursivePass
                 return;
             }
 
+            if ('object' === $type) {
+                return;
+            }
+
             if (is_a($class, $type, true)) {
                 return;
             }

src/Symfony/Component/DependencyInjection/Tests/Compiler/CheckTypeDeclarationsPassTest.php

@@ -15,12 +15,14 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
 use Symfony\Component\DependencyInjection\Compiler\CheckTypeDeclarationsPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\Bar;
 use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\BarMethodCall;
 use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\BarOptionalArgument;
 use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\BarOptionalArgumentNotNull;
 use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\Foo;
+use Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass\FooObject;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
@@ -390,6 +392,18 @@ class CheckTypeDeclarationsPassTest extends TestCase
         $this->addToAssertionCount(1);
     }
 
+    public function testProcessSuccessWhenPassingDefintionForObjectType()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('foo_object', FooObject::class)
+            ->addArgument(new Definition(Foo::class));
+
+        (new CheckTypeDeclarationsPass(true))->process($container);
+
+        $this->addToAssertionCount(1);
+    }
+
     public function testProcessFactory()
     {
         $container = new ContainerBuilder();

src/Symfony/Component/DependencyInjection/Tests/Fixtures/CheckTypeDeclarationsPass/FooObject.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Symfony\Component\DependencyInjection\Tests\Fixtures\CheckTypeDeclarationsPass;
+
+class FooObject
+{
+    public function __construct(object $foo)
+    {
+    }
+}