Merge branch '5.0'

* 5.0:
  [Routing] fix tests
  [DI] minor cleanup
  [Form] group constraints when calling the validator
  Remove wrong @group legacy annotations
  [DependencyInjection] Fix dumping multiple deprecated aliases
  allow button names to start with uppercase letter
  Allow PHP ^7.2.5
  States that the HttpClient provides a Http Async implementation
  [Routing] Fix ContainerLoader and ObjectLoaderTest
  [HttpKernel] Make ErrorListener::onKernelException()'s dispatcher argument explicit
  [HttpKernel] Drop deprecated ExceptionListener
  Removed extra whitespace
  [Security] Fix best encoder not wired using migrate_from

Author: nicolas-grekas

Loader/ContainerLoader.php

@@ -30,7 +30,7 @@ public function __construct(ContainerInterface $container)
     /**
      * {@inheritdoc}
      */
-    public function supports($resource, $type = null)
+    public function supports($resource, string $type = null)
     {
         return 'service' === $type;
     }

Loader/ObjectLoader.php

@@ -52,7 +52,7 @@ public function load($resource, string $type = null)
         $loaderObject = $this->getObject($parts[0]);
 
         if (!\is_object($loaderObject)) {
-            throw new \LogicException(sprintf('%s:getObject() must return an object: %s returned', \get_class($this), \gettype($loaderObject)));
+            throw new \TypeError(sprintf('%s:getObject() must return an object: %s returned', \get_class($this), \gettype($loaderObject)));
         }
 
         if (!\is_callable([$loaderObject, $method])) {

Tests/Loader/ObjectLoaderTest.php

@@ -62,12 +62,9 @@ public function getBadResourceStrings()
         ];
     }
 
-    /**
-     * @group legacy
-     */
     public function testExceptionOnNoObjectReturned()
     {
-        $this->expectException('LogicException');
+        $this->expectException(\TypeError::class);
         $loader = new TestObjectLoader();
         $loader->loaderMap = ['my_service' => 'NOT_AN_OBJECT'];
         $loader->load('my_service::method');

composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^7.2.9"
+        "php": "^7.2.5"
     },
     "require-dev": {
         "symfony/config": "^5.0",