Merge branch '4.0'

* 4.0: (22 commits)
  [appveyor] use PHP 7.1 to run composer
  [HttpKernel] Don't clean legacy containers that are still loaded
  [VarDumper] Fix HtmlDumper classes match
  Make the simple auth provider the same as in Symfony 2.7.
  [PhpUnitBridge] silence wget
  fix merge
  [Security] guardAuthenticationProvider::authenticate cannot return null according to interface specification
  [PhpUnitBridge] Fix #26994
  [VarDumper] Remove decoration from actual output in tests
  [PropertyInfo] Minor cleanup and perf improvement
  [Bridge/Doctrine] fix count() notice on PHP 7.2
  [Security] Skip user checks if not implementing UserInterface
  [DI] Add check of internal type to ContainerBuilder::getReflectionClass
  [HttpFoundation] Add HTTP_EARLY_HINTS const
  [DoctrineBridge] Improve exception message at `IdReader::getIdValue()`
  Add type hints
  fixed CS
  Use new PHP7.2 functions in hasColorSupport
  [VarDumper] Fix dumping of SplObjectStorage
  [HttpFoundation] Add functional tests for Response::sendHeaders()
  ...

Author: nicolas-grekas

ContainerBuilder.php

@@ -123,6 +123,20 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     private $removedIds = array();
     private $alreadyLoading = array();
 
+    private static $internalTypes = array(
+        'int' => true,
+        'float' => true,
+        'string' => true,
+        'bool' => true,
+        'resource' => true,
+        'object' => true,
+        'array' => true,
+        'null' => true,
+        'callable' => true,
+        'iterable' => true,
+        'mixed' => true,
+    );
+
     public function __construct(ParameterBagInterface $parameterBag = null)
     {
         parent::__construct($parameterBag);
@@ -321,6 +335,11 @@ public function getReflectionClass(?string $class, bool $throw = true): ?\Reflec
         if (!$class = $this->getParameterBag()->resolveValue($class)) {
             return null;
         }
+
+        if (isset(self::$internalTypes[$class])) {
+            return null;
+        }
+
         $resource = null;
 
         try {

Tests/ContainerBuilderTest.php

@@ -880,6 +880,23 @@ public function testGetReflectionClass()
         $this->assertSame('BarMissingClass', (string) end($resources));
     }
 
+    public function testGetReflectionClassOnInternalTypes()
+    {
+        $container = new ContainerBuilder();
+
+        $this->assertNull($container->getReflectionClass('int'));
+        $this->assertNull($container->getReflectionClass('float'));
+        $this->assertNull($container->getReflectionClass('string'));
+        $this->assertNull($container->getReflectionClass('bool'));
+        $this->assertNull($container->getReflectionClass('resource'));
+        $this->assertNull($container->getReflectionClass('object'));
+        $this->assertNull($container->getReflectionClass('array'));
+        $this->assertNull($container->getReflectionClass('null'));
+        $this->assertNull($container->getReflectionClass('callable'));
+        $this->assertNull($container->getReflectionClass('iterable'));
+        $this->assertNull($container->getReflectionClass('mixed'));
+    }
+
     public function testCompilesClassDefinitionsOfLazyServices()
     {
         $container = new ContainerBuilder();