Merge branch '4.2'

* 4.2: (27 commits)
  [VarExporter] dont call userland code with uninitialized objects
  Fix typos in doc blocks
  [Debug] ignore underscore vs backslash namespaces in DebugClassLoader
  [TwigBridge][Form] Prevent multiple rendering of form collection prototypes
  [FrameworkBundle] fix describing routes with no controllers
  [DI] move RegisterServiceSubscribersPass before DecoratorServicePass
  Update ValidationListener.php
  [Yaml] ensures that the mb_internal_encoding is reset to its initial value
  [Messenger] Restore message handlers laziness
  [WebLink] Fixed documentation link
  [Security] getTargetPath of TargetPathTrait must return string or null
  [Hackday][Serializer] Deserialization ignores argument type hint from phpdoc for array in constructor argument
  Optimize perf by replacing call_user_func with dynamic vars
  [Cache] Fix dsn parsing
  [Routing] fix dumping same-path routes with placeholders
  [WebProfilerBundle][TwigBundle] CSS fixes
  Add a docblock for FormFactoryInterface
  [Security] defer log message in guard authenticator
  [Validator] Added IBAN format for Vatican City State
  merge conflicts
  ...

src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php

@@ -213,7 +213,7 @@ abstract class DoctrineType extends AbstractType implements ResetInterface
         // for equal query builders
         $queryBuilderNormalizer = function (Options $options, $queryBuilder) {
             if (\is_callable($queryBuilder)) {
-                $queryBuilder = \call_user_func($queryBuilder, $options['em']->getRepository($options['class']));
+                $queryBuilder = $queryBuilder($options['em']->getRepository($options['class']));
             }
 
             return $queryBuilder;

src/Symfony/Bridge/Doctrine/Form/Type/EntityType.php

@@ -29,7 +29,7 @@ class EntityType extends DoctrineType
         // for equal query builders
         $queryBuilderNormalizer = function (Options $options, $queryBuilder) {
             if (\is_callable($queryBuilder)) {
-                $queryBuilder = \call_user_func($queryBuilder, $options['em']->getRepository($options['class']));
+                $queryBuilder = $queryBuilder($options['em']->getRepository($options['class']));
 
                 if (null !== $queryBuilder && !$queryBuilder instanceof QueryBuilder) {
                     throw new UnexpectedTypeException($queryBuilder, 'Doctrine\ORM\QueryBuilder');

src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php

@@ -102,7 +102,7 @@ class ServerLogHandler extends AbstractHandler
     {
         if ($this->processors) {
             foreach ($this->processors as $processor) {
-                $record = \call_user_func($processor, $record);
+                $record = $processor($record);
             }
         }
 

src/Symfony/Bridge/ProxyManager/LazyProxy/Instantiator/RuntimeInstantiator.php

@@ -43,7 +43,7 @@ class RuntimeInstantiator implements InstantiatorInterface
         return $this->factory->createProxy(
             $this->factory->getGenerator()->getProxifiedClass($definition),
             function (&$wrappedInstance, LazyLoadingInterface $proxy) use ($realInstantiator) {
-                $wrappedInstance = \call_user_func($realInstantiator);
+                $wrappedInstance = $realInstantiator();
 
                 $proxy->setProxyInitializer(null);
 

src/Symfony/Bridge/Twig/Resources/views/Form/form_div_layout.html.twig

@@ -28,7 +28,7 @@
 {%- endblock form_widget_compound -%}
 
 {%- block collection_widget -%}
-    {% if prototype is defined %}
+    {% if prototype is defined and not prototype.rendered %}
         {%- set attr = attr|merge({'data-prototype': form_row(prototype) }) -%}
     {% endif %}
     {{- block('form_widget') -}}

src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/TextDescriptor.php

@@ -57,7 +57,7 @@ class TextDescriptor extends Descriptor
 
             if ($showControllers) {
                 $controller = $route->getDefault('_controller');
-                $row[] = $this->formatCallable($controller);
+                $row[] = $controller ? $this->formatCallable($controller) : '';
             }
 
             $tableRows[] = $row;

src/Symfony/Bundle/FrameworkBundle/Controller/AbstractController.php

@@ -15,7 +15,6 @@ use Doctrine\Common\Persistence\ManagerRegistry;
 use Psr\Container\ContainerInterface;
 use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
 use Symfony\Component\DependencyInjection\ParameterBag\ContainerBagInterface;
-use Symfony\Component\DependencyInjection\ServiceSubscriberInterface;
 use Symfony\Component\Form\FormFactoryInterface;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
@@ -27,6 +26,7 @@ use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
 use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
 use Symfony\Component\Serializer\SerializerInterface;
 use Symfony\Component\Templating\EngineInterface;
+use Symfony\Contracts\Service\ServiceSubscriberInterface;
 use Twig\Environment;
 
 /**

src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php

@@ -50,7 +50,7 @@ class RedirectController
      * @param string     $route             The route name to redirect to
      * @param bool       $permanent         Whether the redirection is permanent
      * @param bool|array $ignoreAttributes  Whether to ignore attributes or an array of attributes to ignore
-     * @param bool       $keepRequestMethod Wheter redirect action should keep HTTP request method
+     * @param bool       $keepRequestMethod Whether redirect action should keep HTTP request method
      *
      * @throws HttpException In case the route name is empty
      */
@@ -94,7 +94,7 @@ class RedirectController
      * @param string|null $scheme            The URL scheme (null to keep the current one)
      * @param int|null    $httpPort          The HTTP port (null to keep the current one for the same scheme or the default configured port)
      * @param int|null    $httpsPort         The HTTPS port (null to keep the current one for the same scheme or the default configured port)
-     * @param bool        $keepRequestMethod Wheter redirect action should keep HTTP request method
+     * @param bool        $keepRequestMethod Whether redirect action should keep HTTP request method
      *
      * @throws HttpException In case the path is empty
      */

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -37,7 +37,6 @@ use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\DependencyInjection\Alias;
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
-use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
 use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -1602,12 +1601,7 @@ class FrameworkExtension extends Extension
                 $senders[$sender] = new Reference($senderAliases[$sender] ?? $sender);
             }
 
-            $sendersId = 'messenger.senders.'.$message;
-            $container->register($sendersId, RewindableGenerator::class)
-                ->setFactory('current')
-                ->addArgument(array(new IteratorArgument($senders)));
-            $messageToSendersMapping[$message] = new Reference($sendersId);
-
+            $messageToSendersMapping[$message] = new IteratorArgument($senders);
             $messagesToSendAndHandle[$message] = $messageConfiguration['send_and_handle'];
         }
 

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -651,10 +651,11 @@ abstract class FrameworkExtensionTest extends TestCase
         );
 
         $this->assertSame($messageToSendAndHandleMapping, $senderLocatorDefinition->getArgument(1));
+        $sendersMapping = $senderLocatorDefinition->getArgument(0);
         $this->assertEquals(array(
             'amqp' => new Reference('messenger.transport.amqp'),
             'audit' => new Reference('audit'),
-        ), $container->getDefinition('messenger.senders.'.DummyMessage::class)->getArgument(0)[0]->getValues());
+        ), $sendersMapping[DummyMessage::class]->getValues());
     }
 
     /**

src/Symfony/Bundle/TwigBundle/Resources/views/exception.css.twig

@@ -1,7 +1,7 @@
 {# This file is based on WebProfilerBundle/Resources/views/Profiler/profiler.css.twig.
    If you make any change in this file, verify the same change is needed in the other file. #}
 :root {
-    --font-sans-serif: 'Helvetica, Arial, sans-serif';
+    --font-sans-serif: Helvetica, Arial, sans-serif;
     --page-background: #f9f9f9;
     --color-text: #222;
     /* when updating any of these colors, do the same in toolbar.css.twig */

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/profiler.css.twig

@@ -6,7 +6,7 @@
 *{-webkit-box-sizing: border-box;-moz-box-sizing: border-box;box-sizing: border-box}html{font-family:sans-serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}body{margin:0}article,aside,details,figcaption,figure,footer,header,hgroup,main,menu,nav,section,summary{display:block}audio,canvas,progress,video{display:inline-block;vertical-align:baseline}audio:not([controls]){display:none;height:0}[hidden],template{display:none}a{background-color:transparent}a:active,a:hover{outline:0}abbr[title]{border-bottom:1px dotted}b,strong{font-weight:700}dfn{font-style:italic}h1{margin:.67em 0;font-size:2em}mark{color:#000;background:#ff0}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sup{top:-.5em}sub{bottom:-.25em}img{border:0}svg:not(:root){overflow:hidden}figure{margin:1em 40px}hr{height:0;-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box}pre{overflow:auto}code,kbd,pre,samp{font-family:monospace,monospace;font-size:1em}button,input,optgroup,select,textarea{margin:0;font:inherit;color:inherit}button{overflow:visible}button,select{text-transform:none}button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}button[disabled],html input[disabled]{cursor:default}button::-moz-focus-inner,input::-moz-focus-inner{padding:0;border:0}input{line-height:normal}input[type="checkbox"],input[type="radio"]{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:0}input[type="number"]::-webkit-inner-spin-button,input[type="number"]::-webkit-outer-spin-button{height:auto}input[type="search"]{-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box;-webkit-appearance:textfield}input[type="search"]::-webkit-search-cancel-button,input[type="search"]::-webkit-search-decoration{-webkit-appearance:none}fieldset{padding:.35em .625em .75em;margin:0 2px;border:1px solid silver}legend{padding:0;border:0}textarea{overflow:auto}optgroup{font-weight:700}table{border-spacing:0;border-collapse:collapse}td,th{padding:0}
 
 :root {
-    --font-sans-serif: 'Helvetica, Arial, sans-serif';
+    --font-sans-serif: Helvetica, Arial, sans-serif;
     --page-background: #f9f9f9;
     --color-text: #222;
     --color-muted: #999;
@@ -42,7 +42,7 @@
 .theme-dark {
     --page-background: #36393e;
     --color-text: #e0e0e0;
-    --color-muted: #999;
+    --color-muted: #777;
     --tab-background: #555;
     --tab-color: #ccc;
     --tab-active-background: #888;
@@ -59,7 +59,6 @@
     --table-header: #555;
     --shadow: 0px 0px 1px rgba(32, 32, 32, .2);
     --border: 1px solid #666;
-    --color-muted: #777;
     --base-0: #2e3136;
     --base-1: #444;
     --base-2: #666;
@@ -80,7 +79,7 @@ body {
     color: var(--base-6);
     display: flex;
     flex-direction: column;
-    font_family: var(--font-sans-serif);
+    font-family: var(--font-sans-serif);
     font-size: 14px;
     line-height: 1.4;
 }
@@ -157,7 +156,7 @@ code, pre {
 {# Buttons (the colors of this element don't change based on the selected theme)
    ------------------------------------------------------------------------- #}
 button {
-    font_family: var(--font-sans-serif);
+    font-family: var(--font-sans-serif);
 }
 .btn {
     background: #777;
@@ -296,7 +295,7 @@ table tbody td.num-col {
     text-align: center;
 }
 .font-normal {
-    font_family: var(--font-sans-serif);
+    font-family: var(--font-sans-serif);
     font-size: 14px;
 }
 .help {
@@ -1158,7 +1157,7 @@ pre.sf-dump, pre.sf-dump .sf-dump-default {
 {# Search Results page
    ========================================================================= #}
 #search-results td {
-    font_family: var(--font-sans-serif);
+    font-family: var(--font-sans-serif);
     vertical-align: middle;
 }
 

src/Symfony/Component/Cache/Tests/Adapter/PhpArrayAdapterTest.php

@@ -146,13 +146,13 @@ class PhpArrayAdapterWrapper extends PhpArrayAdapter
 
     public function save(CacheItemInterface $item)
     {
-        \call_user_func(\Closure::bind(function () use ($item) {
+        (\Closure::bind(function () use ($item) {
             $key = $item->getKey();
             $this->keys[$key] = $id = \count($this->values);
             $this->data[$key] = $this->values[$id] = $item->get();
             $this->warmUp($this->data);
             list($this->keys, $this->values) = eval(substr(file_get_contents($this->file), 6));
-        }, $this, PhpArrayAdapter::class));
+        }, $this, PhpArrayAdapter::class))();
 
         return true;
     }

src/Symfony/Component/Cache/Tests/CacheItemTest.php

@@ -62,9 +62,9 @@ class CacheItemTest extends TestCase
         $this->assertSame($item, $item->tag('foo'));
         $this->assertSame($item, $item->tag(array('bar', 'baz')));
 
-        \call_user_func(\Closure::bind(function () use ($item) {
+        (\Closure::bind(function () use ($item) {
             $this->assertSame(array('foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz'), $item->newMetadata[CacheItem::METADATA_TAGS]);
-        }, $this, CacheItem::class));
+        }, $this, CacheItem::class))();
     }
 
     /**

src/Symfony/Component/Cache/Tests/Simple/PhpArrayCacheTest.php

@@ -134,11 +134,11 @@ class PhpArrayCacheWrapper extends PhpArrayCache
 
     public function set($key, $value, $ttl = null)
     {
-        \call_user_func(\Closure::bind(function () use ($key, $value) {
+        (\Closure::bind(function () use ($key, $value) {
             $this->data[$key] = $value;
             $this->warmUp($this->data);
             list($this->keys, $this->values) = eval(substr(file_get_contents($this->file), 6));
-        }, $this, PhpArrayCache::class));
+        }, $this, PhpArrayCache::class))();
 
         return true;
     }
@@ -148,13 +148,13 @@ class PhpArrayCacheWrapper extends PhpArrayCache
         if (!\is_array($values) && !$values instanceof \Traversable) {
             return parent::setMultiple($values, $ttl);
         }
-        \call_user_func(\Closure::bind(function () use ($values) {
+        (\Closure::bind(function () use ($values) {
             foreach ($values as $key => $value) {
                 $this->data[$key] = $value;
             }
             $this->warmUp($this->data);
             list($this->keys, $this->values) = eval(substr(file_get_contents($this->file), 6));
-        }, $this, PhpArrayCache::class));
+        }, $this, PhpArrayCache::class))();
 
         return true;
     }

src/Symfony/Component/Cache/Traits/RedisTrait.php

@@ -96,7 +96,7 @@ trait RedisTrait
             return 'file:'.($m[1] ?? '');
         }, $dsn);
 
-        if (false === $params = parse_url($dsn)) {
+        if (false === $params = parse_url($params)) {
             throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s', $dsn));
         }
 

src/Symfony/Component/Config/ConfigCacheFactory.php

@@ -43,7 +43,7 @@ class ConfigCacheFactory implements ConfigCacheFactoryInterface
 
         $cache = new ConfigCache($file, $this->debug);
         if (!$cache->isFresh()) {
-            \call_user_func($callback, $cache);
+            $callback($cache);
         }
 
         return $cache;

src/Symfony/Component/Config/Resource/ReflectionClassResource.php

@@ -155,15 +155,15 @@ class ReflectionClassResource implements SelfCheckingResourceInterface, \Seriali
 
         if (interface_exists(EventSubscriberInterface::class, false) && $class->isSubclassOf(EventSubscriberInterface::class)) {
             yield EventSubscriberInterface::class;
-            yield print_r(\call_user_func(array($class->name, 'getSubscribedEvents')), true);
+            yield print_r($class->name::getSubscribedEvents(), true);
         }
 
         if (interface_exists(LegacyServiceSubscriberInterface::class, false) && $class->isSubclassOf(LegacyServiceSubscriberInterface::class)) {
             yield LegacyServiceSubscriberInterface::class;
-            yield print_r(\call_user_func(array($class->name, 'getSubscribedServices')), true);
+            yield print_r(array($class->name, 'getSubscribedServices')(), true);
         } elseif (interface_exists(ServiceSubscriberInterface::class, false) && $class->isSubclassOf(ServiceSubscriberInterface::class)) {
             yield ServiceSubscriberInterface::class;
-            yield print_r(\call_user_func(array($class->name, 'getSubscribedServices')), true);
+            yield print_r($class->name::getSubscribedServices(), true);
         }
     }
 }

src/Symfony/Component/Config/ResourceCheckerConfigCacheFactory.php

@@ -40,7 +40,7 @@ class ResourceCheckerConfigCacheFactory implements ConfigCacheFactoryInterface
 
         $cache = new ResourceCheckerConfigCache($file, $this->resourceCheckers);
         if (!$cache->isFresh()) {
-            \call_user_func($callback, $cache);
+            $callback($cache);
         }
 
         return $cache;

src/Symfony/Component/Config/Util/XmlUtils.php

@@ -80,7 +80,7 @@ class XmlUtils
             $e = null;
             if (\is_callable($schemaOrCallable)) {
                 try {
-                    $valid = \call_user_func($schemaOrCallable, $dom, $internalErrors);
+                    $valid = $schemaOrCallable($dom, $internalErrors);
                 } catch (\Exception $e) {
                     $valid = false;
                 }

src/Symfony/Component/Console/Command/Command.php

@@ -250,7 +250,7 @@ class Command
         $input->validate();
 
         if ($this->code) {
-            $statusCode = \call_user_func($this->code, $input, $output);
+            $statusCode = ($this->code)($input, $output);
         } else {
             $statusCode = $this->execute($input, $output);
         }

src/Symfony/Component/Console/Helper/ProcessHelper.php

@@ -136,7 +136,7 @@ class ProcessHelper extends Helper
             $output->write($formatter->progress(spl_object_hash($process), $this->escapeString($buffer), Process::ERR === $type));
 
             if (null !== $callback) {
-                \call_user_func($callback, $type, $buffer);
+                $callback($type, $buffer);
             }
         };
     }

src/Symfony/Component/Console/Helper/ProgressBar.php

@@ -496,7 +496,7 @@ final class ProgressBar
         $regex = "{%([a-z\-_]+)(?:\:([^%]+))?%}i";
         $callback = function ($matches) {
             if ($formatter = $this::getPlaceholderFormatterDefinition($matches[1])) {
-                $text = \call_user_func($formatter, $this, $this->output);
+                $text = $formatter($this, $this->output);
             } elseif (isset($this->messages[$matches[1]])) {
                 $text = $this->messages[$matches[1]];
             } else {

src/Symfony/Component/Console/Helper/ProgressIndicator.php

@@ -196,7 +196,7 @@ class ProgressIndicator
 
         $this->overwrite(preg_replace_callback("{%([a-z\-_]+)(?:\:([^%]+))?%}i", function ($matches) use ($self) {
             if ($formatter = $self::getPlaceholderFormatterDefinition($matches[1])) {
-                return \call_user_func($formatter, $self);
+                return $formatter($self);
             }
 
             return $matches[0];

src/Symfony/Component/Console/Helper/QuestionHelper.php

@@ -381,7 +381,7 @@ class QuestionHelper extends Helper
             }
 
             try {
-                return \call_user_func($question->getValidator(), $interviewer());
+                return $question->getValidator()($interviewer());
             } catch (RuntimeException $e) {
                 throw $e;
             } catch (\Exception $error) {

src/Symfony/Component/CssSelector/XPath/Translator.php

@@ -155,7 +155,7 @@ class Translator implements TranslatorInterface
             throw new ExpressionErrorException(sprintf('Node "%s" not supported.', $node->getNodeName()));
         }
 
-        return \call_user_func($this->nodeTranslators[$node->getNodeName()], $node, $this);
+        return $this->nodeTranslators[$node->getNodeName()]($node, $this);
     }
 
     /**
@@ -167,7 +167,7 @@ class Translator implements TranslatorInterface
             throw new ExpressionErrorException(sprintf('Combiner "%s" not supported.', $combiner));
         }
 
-        return \call_user_func($this->combinationTranslators[$combiner], $this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath));
+        return $this->combinationTranslators[$combiner]($this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath));
     }
 
     /**
@@ -179,7 +179,7 @@ class Translator implements TranslatorInterface
             throw new ExpressionErrorException(sprintf('Function "%s" not supported.', $function->getName()));
         }
 
-        return \call_user_func($this->functionTranslators[$function->getName()], $xpath, $function);
+        return $this->functionTranslators[$function->getName()]($xpath, $function);
     }
 
     /**
@@ -191,7 +191,7 @@ class Translator implements TranslatorInterface
             throw new ExpressionErrorException(sprintf('Pseudo-class "%s" not supported.', $pseudoClass));
         }
 
-        return \call_user_func($this->pseudoClassTranslators[$pseudoClass], $xpath);
+        return $this->pseudoClassTranslators[$pseudoClass]($xpath);
     }
 
     /**
@@ -203,7 +203,7 @@ class Translator implements TranslatorInterface
             throw new ExpressionErrorException(sprintf('Attribute matcher operator "%s" not supported.', $operator));
         }
 
-        return \call_user_func($this->attributeMatchingTranslators[$operator], $xpath, $attribute, $value);
+        return $this->attributeMatchingTranslators[$operator]($xpath, $attribute, $value);
     }
 
     /**

src/Symfony/Component/Debug/DebugClassLoader.php

@@ -151,7 +151,7 @@ class DebugClassLoader
                     require $file;
                 }
             } else {
-                \call_user_func($this->classLoader, $class);
+                ($this->classLoader)($class);
                 $file = false;
             }
         } finally {
@@ -218,7 +218,7 @@ class DebugClassLoader
             $len = 0;
             $ns = '';
         } else {
-            $ns = \substr($class, 0, $len);
+            $ns = \str_replace('_', '\\', \substr($class, 0, $len));
         }
 
         // Detect annotations on the class
@@ -249,13 +249,13 @@ class DebugClassLoader
             if (!isset(self::$checkedClasses[$use])) {
                 $this->checkClass($use);
             }
-            if (isset(self::$deprecated[$use]) && \strncmp($ns, $use, $len)) {
+            if (isset(self::$deprecated[$use]) && \strncmp($ns, \str_replace('_', '\\', $use), $len)) {
                 $type = class_exists($class, false) ? 'class' : (interface_exists($class, false) ? 'interface' : 'trait');
                 $verb = class_exists($use, false) || interface_exists($class, false) ? 'extends' : (interface_exists($use, false) ? 'implements' : 'uses');
 
                 $deprecations[] = sprintf('The "%s" %s %s "%s" that is deprecated%s.', $class, $type, $verb, $use, self::$deprecated[$use]);
             }
-            if (isset(self::$internal[$use]) && \strncmp($ns, $use, $len)) {
+            if (isset(self::$internal[$use]) && \strncmp($ns, \str_replace('_', '\\', $use), $len)) {
                 $deprecations[] = sprintf('The "%s" %s is considered internal%s. It may change without further notice. You should not use it from "%s".', $use, class_exists($use, false) ? 'class' : (interface_exists($use, false) ? 'interface' : 'trait'), self::$internal[$use], $class);
             }
         }

src/Symfony/Component/Debug/ErrorHandler.php

@@ -562,7 +562,7 @@ class ErrorHandler
         $this->exceptionHandler = null;
         try {
             if (null !== $exceptionHandler) {
-                return \call_user_func($exceptionHandler, $exception);
+                return $exceptionHandler($exception);
             }
             $handlerException = $handlerException ?: $exception;
         } catch (\Throwable $handlerException) {

src/Symfony/Component/Debug/ExceptionHandler.php

@@ -144,7 +144,7 @@ class ExceptionHandler
         $this->caughtBuffer = null;
 
         try {
-            \call_user_func($this->handler, $exception);
+            ($this->handler)($exception);
             $this->caughtLength = $caughtLength;
         } catch (\Exception $e) {
             if (!$caughtLength) {

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

@@ -52,11 +52,11 @@ class PassConfig
             new ValidateEnvPlaceholdersPass(),
             new ResolveChildDefinitionsPass(),
             new ServiceLocatorTagPass(),
+            new RegisterServiceSubscribersPass(),
             new DecoratorServicePass(),
             new ResolveParameterPlaceHoldersPass(false),
             new ResolveFactoryClassPass(),
             new CheckDefinitionValidityPass(),
-            new RegisterServiceSubscribersPass(),
             new ResolveNamedArgumentsPass(),
             new AutowireRequiredMethodsPass(),
             new ResolveBindingsPass(),

src/Symfony/Component/DependencyInjection/ContainerBuilder.php

@@ -1162,7 +1162,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
                 throw new InvalidArgumentException(sprintf('The configure callable for class "%s" is not a callable.', \get_class($service)));
             }
 
-            \call_user_func($callable, $service);
+            $callable($service);
         }
 
         return $service;

src/Symfony/Component/DependencyInjection/LazyProxy/Instantiator/RealServiceInstantiator.php

@@ -28,6 +28,6 @@ class RealServiceInstantiator implements InstantiatorInterface
      */
     public function instantiateProxy(ContainerInterface $container, Definition $definition, $id, $realInstantiator)
     {
-        return \call_user_func($realInstantiator);
+        return $realInstantiator();
     }
 }

src/Symfony/Component/DependencyInjection/Loader/ClosureLoader.php

@@ -35,7 +35,7 @@ class ClosureLoader extends Loader
      */
     public function load($resource, $type = null)
     {
-        \call_user_func($resource, $this->container);
+        $resource($this->container);
     }
 
     /**

src/Symfony/Component/DependencyInjection/ParameterBag/ContainerBagInterface.php

@@ -15,6 +15,8 @@ use Psr\Container\ContainerInterface;
 use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
 
 /**
+ * ContainerBagInterface is the interface implemented by objects that manage service container parameters.
+ *
  * @author Nicolas Grekas <p@tchwork.com>
  */
 interface ContainerBagInterface extends ContainerInterface

src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBagInterface.php

@@ -15,7 +15,7 @@ use Symfony\Component\DependencyInjection\Exception\LogicException;
 use Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException;
 
 /**
- * ParameterBagInterface.
+ * ParameterBagInterface is the interface implemented by objects that manage service container parameters.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */

src/Symfony/Component/DependencyInjection/ServiceLocator.php

@@ -86,39 +86,40 @@ class ServiceLocator implements PsrContainerInterface
         $class = isset($class[3]['object']) ? \get_class($class[3]['object']) : null;
         $externalId = $this->externalId ?: $class;
 
-        $msg = sprintf('Service "%s" not found: ', $id);
+        $msg = array();
+        $msg[] = sprintf('Service "%s" not found:', $id);
 
         if (!$this->container) {
             $class = null;
         } elseif ($this->container->has($id) || isset($this->container->getRemovedIds()[$id])) {
-            $msg .= 'even though it exists in the app\'s container, ';
+            $msg[] = 'even though it exists in the app\'s container,';
         } else {
             try {
                 $this->container->get($id);
                 $class = null;
             } catch (ServiceNotFoundException $e) {
                 if ($e->getAlternatives()) {
-                    $msg .= sprintf(' did you mean %s? Anyway, ', $this->formatAlternatives($e->getAlternatives(), 'or'));
+                    $msg[] = sprintf('did you mean %s? Anyway,', $this->formatAlternatives($e->getAlternatives(), 'or'));
                 } else {
                     $class = null;
                 }
             }
         }
         if ($externalId) {
-            $msg .= sprintf('the container inside "%s" is a smaller service locator that %s', $externalId, $this->formatAlternatives());
+            $msg[] = sprintf('the container inside "%s" is a smaller service locator that %s', $externalId, $this->formatAlternatives());
         } else {
-            $msg .= sprintf('the current service locator %s', $this->formatAlternatives());
+            $msg[] = sprintf('the current service locator %s', $this->formatAlternatives());
         }
 
         if (!$class) {
             // no-op
         } elseif (is_subclass_of($class, ServiceSubscriberInterface::class)) {
-            $msg .= sprintf(' Unless you need extra laziness, try using dependency injection instead. Otherwise, you need to declare it using "%s::getSubscribedServices()".', preg_replace('/([^\\\\]++\\\\)++/', '', $class));
+            $msg[] = sprintf('Unless you need extra laziness, try using dependency injection instead. Otherwise, you need to declare it using "%s::getSubscribedServices()".', preg_replace('/([^\\\\]++\\\\)++/', '', $class));
         } else {
-            $msg .= 'Try using dependency injection instead.';
+            $msg[] = 'Try using dependency injection instead.';
         }
 
-        return new ServiceNotFoundException($id, end($this->loading) ?: null, null, array(), $msg);
+        return new ServiceNotFoundException($id, end($this->loading) ?: null, null, array(), implode(' ', $msg));
     }
 
     private function createCircularReferenceException(string $id, array $path): ContainerExceptionInterface

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

@@ -17,6 +17,7 @@ use Symfony\Component\DependencyInjection\Alias;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\ServiceSubscriberInterface;
 
 /**
  * This class tests the integration of the different compiler passes.
@@ -120,6 +121,21 @@ class IntegrationTest extends TestCase
         $this->assertFalse($container->hasDefinition('c'), 'Service C was not inlined.');
     }
 
+    public function testCanDecorateServiceSubscriber()
+    {
+        $container = new ContainerBuilder();
+        $container->register(ServiceSubscriberStub::class)
+            ->addTag('container.service_subscriber')
+            ->setPublic(true);
+
+        $container->register(DecoratedServiceSubscriber::class)
+            ->setDecoratedService(ServiceSubscriberStub::class);
+
+        $container->compile();
+
+        $this->assertInstanceOf(DecoratedServiceSubscriber::class, $container->get(ServiceSubscriberStub::class));
+    }
+
     /**
      * @dataProvider getYamlCompileTests
      */
@@ -220,6 +236,18 @@ class IntegrationTest extends TestCase
     }
 }
 
+class ServiceSubscriberStub implements ServiceSubscriberInterface
+{
+    public static function getSubscribedServices()
+    {
+        return array();
+    }
+}
+
+class DecoratedServiceSubscriber
+{
+}
+
 class IntegrationTestStub extends IntegrationTestStubParent
 {
 }

src/Symfony/Component/DependencyInjection/Tests/ServiceLocatorTest.php

@@ -61,6 +61,20 @@ class ServiceLocatorTest extends BaseServiceLocatorTest
         $subscriber->getFoo();
     }
 
+    /**
+     * @expectedException        \Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException
+     * @expectedExceptionMessage Service "foo" not found: even though it exists in the app's container, the container inside "foo" is a smaller service locator that is empty... Try using dependency injection instead.
+     */
+    public function testGetThrowsServiceNotFoundException()
+    {
+        $container = new Container();
+        $container->set('foo', new \stdClass());
+
+        $locator = new ServiceLocator(array());
+        $locator = $locator->withContext('foo', $container);
+        $locator->get('foo');
+    }
+
     public function testInvoke()
     {
         $locator = $this->getServiceLocator(array(

src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php

@@ -110,7 +110,7 @@ class WrappedListener
 
         $e = $this->stopwatch->start($this->name, 'event_listener');
 
-        \call_user_func($this->optimizedListener, $event, $eventName, $this->dispatcher ?: $dispatcher);
+        ($this->optimizedListener)($event, $eventName, $this->dispatcher ?: $dispatcher);
 
         if ($e->isStarted()) {
             $e->stop();

src/Symfony/Component/EventDispatcher/EventDispatcher.php

@@ -218,7 +218,7 @@ class EventDispatcher implements EventDispatcherInterface
             if ($event->isPropagationStopped()) {
                 break;
             }
-            \call_user_func($listener, $event, $eventName, $this);
+            $listener($event, $eventName, $this);
         }
     }
 

src/Symfony/Component/Finder/Iterator/CustomFilterIterator.php

@@ -51,7 +51,7 @@ class CustomFilterIterator extends \FilterIterator
         $fileinfo = $this->current();
 
         foreach ($this->filters as $filter) {
-            if (false === \call_user_func($filter, $fileinfo)) {
+            if (false === $filter($fileinfo)) {
                 return false;
             }
         }

src/Symfony/Component/Finder/Iterator/SortableIterator.php

@@ -73,7 +73,7 @@ class SortableIterator implements \IteratorAggregate
         } elseif (self::SORT_BY_NONE === $sort) {
             $this->sort = $order;
         } elseif (\is_callable($sort)) {
-            $this->sort = $reverseOrder ? function ($a, $b) use ($sort) { return -\call_user_func($sort, $a, $b); } : $sort;
+            $this->sort = $reverseOrder ? function ($a, $b) use ($sort) { return -$sort($a, $b); } : $sort;
         } else {
             throw new \InvalidArgumentException('The SortableIterator takes a PHP callable or a valid built-in sort algorithm as an argument.');
         }

src/Symfony/Component/Form/CallbackTransformer.php

@@ -41,7 +41,7 @@ class CallbackTransformer implements DataTransformerInterface
      */
     public function transform($data)
     {
-        return \call_user_func($this->transform, $data);
+        return ($this->transform)($data);
     }
 
     /**
@@ -57,6 +57,6 @@ class CallbackTransformer implements DataTransformerInterface
      */
     public function reverseTransform($data)
     {
-        return \call_user_func($this->reverseTransform, $data);
+        return ($this->reverseTransform)($data);
     }
 }

src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php

@@ -155,7 +155,7 @@ class ArrayChoiceList implements ChoiceListInterface
             $givenValues = array();
 
             foreach ($choices as $i => $givenChoice) {
-                $givenValues[$i] = (string) \call_user_func($this->valueCallback, $givenChoice);
+                $givenValues[$i] = (string) ($this->valueCallback)($givenChoice);
             }
 
             return array_intersect($givenValues, array_keys($this->choices));
@@ -202,7 +202,7 @@ class ArrayChoiceList implements ChoiceListInterface
                 continue;
             }
 
-            $choiceValue = (string) \call_user_func($value, $choice);
+            $choiceValue = (string) $value($choice);
             $choicesByValues[$choiceValue] = $choice;
             $keysByValues[$choiceValue] = $key;
             $structuredValues[$key] = $choiceValue;

src/Symfony/Component/Form/ChoiceList/Factory/DefaultChoiceListFactory.php

@@ -118,7 +118,7 @@ class DefaultChoiceListFactory implements ChoiceListFactoryInterface
         // $value may be an integer or a string, since it's stored in the array
         // keys. We want to guarantee it's a string though.
         $key = $keys[$value];
-        $nextIndex = \is_int($index) ? $index++ : \call_user_func($index, $choice, $key, $value);
+        $nextIndex = \is_int($index) ? $index++ : $index($choice, $key, $value);
 
         // BC normalize label to accept a false value
         if (null === $label) {
@@ -127,7 +127,7 @@ class DefaultChoiceListFactory implements ChoiceListFactoryInterface
         } elseif (false !== $label) {
             // If "choice_label" is set to false and "expanded" is true, the value false
             // should be passed on to the "label" option of the checkboxes/radio buttons
-            $dynamicLabel = \call_user_func($label, $choice, $key, $value);
+            $dynamicLabel = $label($choice, $key, $value);
             $label = false === $dynamicLabel ? false : (string) $dynamicLabel;
         }
 
@@ -137,11 +137,11 @@ class DefaultChoiceListFactory implements ChoiceListFactoryInterface
             $label,
             // The attributes may be a callable or a mapping from choice indices
             // to nested arrays
-            \is_callable($attr) ? \call_user_func($attr, $choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : array())
+            \is_callable($attr) ? $attr($choice, $key, $value) : (isset($attr[$key]) ? $attr[$key] : array())
         );
 
         // $isPreferred may be null if no choices are preferred
-        if ($isPreferred && \call_user_func($isPreferred, $choice, $key, $value)) {
+        if ($isPreferred && $isPreferred($choice, $key, $value)) {
             $preferredViews[$nextIndex] = $view;
         } else {
             $otherViews[$nextIndex] = $view;
@@ -200,7 +200,7 @@ class DefaultChoiceListFactory implements ChoiceListFactoryInterface
 
     private static function addChoiceViewGroupedBy($groupBy, $choice, $value, $label, $keys, &$index, $attr, $isPreferred, &$preferredViews, &$otherViews)
     {
-        $groupLabel = \call_user_func($groupBy, $choice, $keys[$value], $value);
+        $groupLabel = $groupBy($choice, $keys[$value], $value);
 
         if (null === $groupLabel) {
             // If the callable returns null, don't group the choice

src/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.php

@@ -46,7 +46,7 @@ class CallbackChoiceLoader implements ChoiceLoaderInterface
             return $this->choiceList;
         }
 
-        return $this->choiceList = new ArrayChoiceList(\call_user_func($this->callback), $value);
+        return $this->choiceList = new ArrayChoiceList(($this->callback)(), $value);
     }
 
     /**

src/Symfony/Component/Form/ChoiceList/Loader/IntlCallbackChoiceLoader.php

@@ -30,11 +30,6 @@ class IntlCallbackChoiceLoader extends CallbackChoiceLoader
             return array();
         }
 
-        // If no callable is set, values are the same as choices
-        if (null === $value) {
-            return $values;
-        }
-
         return $this->loadChoiceList($value)->getChoicesForValues($values);
     }
 

src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php

@@ -135,7 +135,7 @@ class ResizeFormListener implements EventSubscriberInterface
             /** @var FormInterface $child */
             foreach ($form as $name => $child) {
                 $isNew = !isset($previousData[$name]);
-                $isEmpty = \is_callable($this->deleteEmpty) ? \call_user_func($this->deleteEmpty, $child->getData()) : $child->isEmpty();
+                $isEmpty = \is_callable($this->deleteEmpty) ? ($this->deleteEmpty)($child->getData()) : $child->isEmpty();
 
                 // $isNew can only be true if allowAdd is true, so we don't
                 // need to check allowAdd again

src/Symfony/Component/Form/Extension/Core/Type/CountryType.php

@@ -106,11 +106,6 @@ class CountryType extends AbstractType implements ChoiceLoaderInterface
             return array();
         }
 
-        // If no callable is set, values are the same as choices
-        if (null === $value) {
-            return $values;
-        }
-
         return $this->loadChoiceList($value)->getChoicesForValues($values);
     }
 

src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php

@@ -106,11 +106,6 @@ class CurrencyType extends AbstractType implements ChoiceLoaderInterface
             return array();
         }
 
-        // If no callable is set, values are the same as choices
-        if (null === $value) {
-            return $values;
-        }
-
         return $this->loadChoiceList($value)->getChoicesForValues($values);
     }
 

src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php

@@ -106,11 +106,6 @@ class LanguageType extends AbstractType implements ChoiceLoaderInterface
             return array();
         }
 
-        // If no callable is set, values are the same as choices
-        if (null === $value) {
-            return $values;
-        }
-
         return $this->loadChoiceList($value)->getChoicesForValues($values);
     }
 

src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php

@@ -106,11 +106,6 @@ class LocaleType extends AbstractType implements ChoiceLoaderInterface
             return array();
         }
 
-        // If no callable is set, values are the same as choices
-        if (null === $value) {
-            return $values;
-        }
-
         return $this->loadChoiceList($value)->getChoicesForValues($values);
     }
 

src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php

@@ -73,7 +73,7 @@ class HttpFoundationRequestHandler implements RequestHandlerInterface
                 $form->submit(null, false);
 
                 $form->addError(new FormError(
-                    \call_user_func($form->getConfig()->getOption('upload_max_size_message')),
+                    $form->getConfig()->getOption('upload_max_size_message')(),
                     null,
                     array('{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize())
                 ));

src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php

@@ -180,7 +180,7 @@ class FormValidator extends ConstraintValidator
     private static function resolveValidationGroups($groups, FormInterface $form)
     {
         if (!\is_string($groups) && \is_callable($groups)) {
-            $groups = \call_user_func($groups, $form);
+            $groups = $groups($form);
         }
 
         if ($groups instanceof GroupSequence) {

src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php

@@ -51,7 +51,7 @@ class ValidationListener implements EventSubscriberInterface
         $form = $event->getForm();
 
         if ($form->isRoot()) {
-            // Validate the form in group "Default"
+            // Form groups are validated internally (FormValidator). Here we don't set groups as they are retrieved into the validator.
             foreach ($this->validator->validate($form) as $violation) {
                 // Allow the "invalid" constraint to be put onto
                 // non-synchronized forms

src/Symfony/Component/Form/Extension/Validator/Type/UploadValidatorExtension.php

@@ -48,7 +48,7 @@ class UploadValidatorExtension extends AbstractTypeExtension
         $translationDomain = $this->translationDomain;
         $resolver->setNormalizer('upload_max_size_message', function (Options $options, $message) use ($translator, $translationDomain) {
             return function () use ($translator, $translationDomain, $message) {
-                return $translator->trans(\call_user_func($message), array(), $translationDomain);
+                return $translator->trans($message(), array(), $translationDomain);
             };
         });
     }

src/Symfony/Component/Form/Form.php

@@ -532,11 +532,12 @@ class Form implements \IteratorAggregate, FormInterface, ClearableErrorsInterfac
             $submittedData = null;
         } elseif (is_scalar($submittedData)) {
             $submittedData = (string) $submittedData;
-        } elseif ($this->config->getOption('allow_file_upload')) {
-            // no-op
-        } elseif ($this->config->getRequestHandler()->isFileUpload($submittedData)) {
+        } elseif (!$this->config->getOption('allow_file_upload') && $this->config->getRequestHandler()->isFileUpload($submittedData)) {
             $submittedData = null;
             $this->transformationFailure = new TransformationFailedException('Submitted data was expected to be text or number, file upload given.');
+        } elseif (\is_array($submittedData) && !$this->config->getCompound() && !$this->config->hasOption('multiple')) {
+            $submittedData = null;
+            $this->transformationFailure = new TransformationFailedException('Submitted data was expected to be text or number, array given.');
         }
 
         $dispatcher = $this->config->getEventDispatcher();

src/Symfony/Component/Form/FormFactoryInterface.php

@@ -12,6 +12,8 @@
 namespace Symfony\Component\Form;
 
 /**
+ * Allows creating a form based on a name, a class or a property.
+ *
  * @author Bernhard Schussek <bschussek@gmail.com>
  */
 interface FormFactoryInterface

src/Symfony/Component/Form/NativeRequestHandler.php

@@ -78,7 +78,7 @@ class NativeRequestHandler implements RequestHandlerInterface
                 $form->submit(null, false);
 
                 $form->addError(new FormError(
-                    \call_user_func($form->getConfig()->getOption('upload_max_size_message')),
+                    $form->getConfig()->getOption('upload_max_size_message')(),
                     null,
                     array('{{ max }}' => $this->serverParams->getNormalizedIniPostMaxSize())
                 ));

src/Symfony/Component/Form/Tests/ChoiceList/Loader/IntlCallbackChoiceLoaderTest.php

@@ -84,6 +84,11 @@ class IntlCallbackChoiceLoaderTest extends TestCase
         );
     }
 
+    public function testLoadChoicesForValuesDropsNonExistentChoices()
+    {
+        $this->assertSame(array(), self::$loader->loadChoicesForValues(array('foo')));
+    }
+
     public function testLoadValuesForChoicesLoadsChoiceListOnFirstCall()
     {
         $this->assertSame(

src/Symfony/Component/Form/Tests/CompoundFormTest.php

@@ -1081,6 +1081,22 @@ class CompoundFormTest extends AbstractFormTest
         $this->assertFalse($submit->isSubmitted());
     }
 
+    public function testArrayTransformationFailureOnSubmit()
+    {
+        $this->form->add($this->getBuilder('foo')->setCompound(false)->getForm());
+        $this->form->add($this->getBuilder('bar', null, null, array('multiple' => false))->setCompound(false)->getForm());
+
+        $this->form->submit(array(
+            'foo' => array('foo'),
+            'bar' => array('bar'),
+        ));
+
+        $this->assertNull($this->form->get('foo')->getData());
+        $this->assertSame('Submitted data was expected to be text or number, array given.', $this->form->get('foo')->getTransformationFailure()->getMessage());
+
+        $this->assertSame(array('bar'), $this->form->get('bar')->getData());
+    }
+
     public function testFileUpload()
     {
         $reqHandler = new HttpFoundationRequestHandler();

src/Symfony/Component/Form/Tests/Extension/Core/Type/CountryTypeTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Core\Type;
 
 use Symfony\Component\Form\ChoiceList\View\ChoiceView;
+use Symfony\Component\Form\Extension\Core\Type\CountryType;
 use Symfony\Component\Intl\Util\IntlTestHelper;
 
 class CountryTypeTest extends BaseTypeTest
@@ -80,4 +81,14 @@ class CountryTypeTest extends BaseTypeTest
     {
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
     }
+
+    /**
+     * @group legacy
+     */
+    public function testInvalidChoiceValuesAreDropped()
+    {
+        $type = new CountryType();
+
+        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+    }
 }

src/Symfony/Component/Form/Tests/Extension/Core/Type/CurrencyTypeTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Core\Type;
 
 use Symfony\Component\Form\ChoiceList\View\ChoiceView;
+use Symfony\Component\Form\Extension\Core\Type\CurrencyType;
 use Symfony\Component\Intl\Util\IntlTestHelper;
 
 class CurrencyTypeTest extends BaseTypeTest
@@ -61,4 +62,14 @@ class CurrencyTypeTest extends BaseTypeTest
     {
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
     }
+
+    /**
+     * @group legacy
+     */
+    public function testInvalidChoiceValuesAreDropped()
+    {
+        $type = new CurrencyType();
+
+        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+    }
 }

src/Symfony/Component/Form/Tests/Extension/Core/Type/LanguageTypeTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Core\Type;
 
 use Symfony\Component\Form\ChoiceList\View\ChoiceView;
+use Symfony\Component\Form\Extension\Core\Type\LanguageType;
 use Symfony\Component\Intl\Util\IntlTestHelper;
 
 class LanguageTypeTest extends BaseTypeTest
@@ -73,4 +74,14 @@ class LanguageTypeTest extends BaseTypeTest
     {
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
     }
+
+    /**
+     * @group legacy
+     */
+    public function testInvalidChoiceValuesAreDropped()
+    {
+        $type = new LanguageType();
+
+        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+    }
 }

src/Symfony/Component/Form/Tests/Extension/Core/Type/LocaleTypeTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form\Tests\Extension\Core\Type;
 
 use Symfony\Component\Form\ChoiceList\View\ChoiceView;
+use Symfony\Component\Form\Extension\Core\Type\LocaleType;
 use Symfony\Component\Intl\Util\IntlTestHelper;
 
 class LocaleTypeTest extends BaseTypeTest
@@ -61,4 +62,14 @@ class LocaleTypeTest extends BaseTypeTest
     {
         parent::testSubmitNullUsesDefaultEmptyData($emptyData, $expectedData);
     }
+
+    /**
+     * @group legacy
+     */
+    public function testInvalidChoiceValuesAreDropped()
+    {
+        $type = new LocaleType();
+
+        $this->assertSame(array(), $type->loadChoicesForValues(array('foo')));
+    }
 }

src/Symfony/Component/Form/Tests/Extension/Core/Type/UrlTypeTest.php

@@ -83,14 +83,6 @@ class UrlTypeTest extends TextTypeTest
         ));
     }
 
-    public function testSubmitWithNonStringDataDoesNotBreakTheFixUrlProtocolListener()
-    {
-        $form = $this->factory->create(static::TESTED_TYPE);
-        $form->submit(array('domain.com', 'www.domain.com'));
-
-        $this->assertSame(array('domain.com', 'www.domain.com'), $form->getData());
-    }
-
     public function testSubmitNullUsesDefaultEmptyData($emptyData = 'empty', $expectedData = 'http://empty')
     {
         $form = $this->factory->create(static::TESTED_TYPE, null, array(

src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php

@@ -220,7 +220,7 @@ class FormValidatorTest extends ConstraintValidatorTestCase
             ->getForm();
 
         // Launch transformer
-        $form->submit(array());
+        $form->submit('foo');
 
         $this->expectNoValidate();
 

src/Symfony/Component/Form/Tests/Extension/Validator/Type/UploadValidatorExtensionTest.php

@@ -41,6 +41,6 @@ class UploadValidatorExtensionTest extends TypeTestCase
         $extension->configureOptions($resolver);
         $options = $resolver->resolve();
 
-        $this->assertEquals('translated max {{ max }}!', \call_user_func($options['upload_max_size_message']));
+        $this->assertEquals('translated max {{ max }}!', $options['upload_max_size_message']());
     }
 }

src/Symfony/Component/HttpFoundation/HeaderBag.php

@@ -101,9 +101,9 @@ class HeaderBag implements \IteratorAggregate, \Countable
     /**
      * Returns a header value by name.
      *
-     * @param string               $key     The header name
-     * @param string|string[]|null $default The default value
-     * @param bool                 $first   Whether to return the first value or all header values
+     * @param string      $key     The header name
+     * @param string|null $default The default value
+     * @param bool        $first   Whether to return the first value or all header values
      *
      * @return string|string[]|null The first header value or default value if $first is true, an array of values otherwise
      */

src/Symfony/Component/HttpFoundation/Request.php

@@ -1908,7 +1908,7 @@ class Request
     private static function createRequestFromFactory(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
     {
         if (self::$requestFactory) {
-            $request = \call_user_func(self::$requestFactory, $query, $request, $attributes, $cookies, $files, $server, $content);
+            $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content);
 
             if (!$request instanceof self) {
                 throw new \LogicException('The Request factory must return an instance of Symfony\Component\HttpFoundation\Request.');

src/Symfony/Component/HttpFoundation/StreamedResponse.php

@@ -111,7 +111,7 @@ class StreamedResponse extends Response
             throw new \LogicException('The Response callback must not be null.');
         }
 
-        \call_user_func($this->callback);
+        ($this->callback)();
 
         return $this;
     }

src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/PdoSessionHandlerTest.php

@@ -390,7 +390,7 @@ class MockPdo extends \PDO
     public function prepare($statement, $driverOptions = array())
     {
         return \is_callable($this->prepareResult)
-            ? \call_user_func($this->prepareResult, $statement, $driverOptions)
+            ? ($this->prepareResult)($statement, $driverOptions)
             : $this->prepareResult;
     }
 

src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php

@@ -91,7 +91,7 @@ class FileLinkFormatter implements \Serializable
         if ($this->requestStack && $this->baseDir && $this->urlFormat) {
             $request = $this->requestStack->getMasterRequest();
             if ($request instanceof Request) {
-                if ($this->urlFormat instanceof \Closure && !$this->urlFormat = \call_user_func($this->urlFormat)) {
+                if ($this->urlFormat instanceof \Closure && !$this->urlFormat = ($this->urlFormat)()) {
                     return;
                 }
 

src/Symfony/Component/Messenger/DependencyInjection/MessengerPass.php

@@ -12,7 +12,6 @@
 namespace Symfony\Component\Messenger\DependencyInjection;
 
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
-use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
@@ -163,11 +162,7 @@ class MessengerPass implements CompilerPassInterface
         foreach ($handlersByBusAndMessage as $bus => $handlersByMessage) {
             foreach ($handlersByMessage as $message => $handlerIds) {
                 $handlers = array_map(function (string $handlerId) { return new Reference($handlerId); }, $handlerIds);
-                $handlersId = "messenger.handlers.$bus.$message";
-                $definitions[$handlersId] = (new Definition(RewindableGenerator::class))
-                    ->setFactory('current')
-                    ->addArgument(array($handlers));
-                $handlersLocatorMappingByBus[$bus][$message] = new Reference($handlersId);
+                $handlersLocatorMappingByBus[$bus][$message] = new IteratorArgument($handlers);
             }
         }
         $container->addDefinitions($definitions);

src/Symfony/Component/Messenger/Tests/DependencyInjection/MessengerPassTest.php

@@ -12,7 +12,7 @@
 namespace Symfony\Component\Messenger\Tests\DependencyInjection;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
+use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
 use Symfony\Component\DependencyInjection\Compiler\ResolveChildDefinitionsPass;
 use Symfony\Component\DependencyInjection\Compiler\ResolveClassPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -67,8 +67,8 @@ class MessengerPassTest extends TestCase
         $this->assertSame(HandlersLocator::class, $handlersLocatorDefinition->getClass());
         $this->assertEquals(
             array(
-                DummyMessage::class => new Reference("messenger.handlers.$busId.".DummyMessage::class),
-                SecondMessage::class => new Reference("messenger.handlers.$busId.".SecondMessage::class),
+                DummyMessage::class => new IteratorArgument(array(new Reference(DummyHandler::class))),
+                SecondMessage::class => new IteratorArgument(array(new Reference(MissingArgumentTypeHandler::class))),
             ),
             $handlersLocatorDefinition->getArgument(0)
         );
@@ -107,8 +107,8 @@ class MessengerPassTest extends TestCase
         $this->assertSame(HandlersLocator::class, $commandBusHandlersLocatorDefinition->getClass());
         $this->assertEquals(
             array(
-                MultipleBusesMessage::class => new Reference("messenger.handlers.$commandBusId.".MultipleBusesMessage::class),
-                DummyCommand::class => new Reference("messenger.handlers.$commandBusId.".DummyCommand::class),
+                MultipleBusesMessage::class => new IteratorArgument(array(new Reference(MultipleBusesMessageHandler::class))),
+                DummyCommand::class => new IteratorArgument(array(new Reference(DummyCommandHandler::class))),
             ),
             $commandBusHandlersLocatorDefinition->getArgument(0)
         );
@@ -117,8 +117,8 @@ class MessengerPassTest extends TestCase
         $this->assertSame(HandlersLocator::class, $queryBusHandlersLocatorDefinition->getClass());
         $this->assertEquals(
             array(
-                DummyQuery::class => new Reference("messenger.handlers.$queryBusId.".DummyQuery::class),
-                MultipleBusesMessage::class => new Reference("messenger.handlers.$queryBusId.".MultipleBusesMessage::class),
+                DummyQuery::class => new IteratorArgument(array(new Reference(DummyQueryHandler::class))),
+                MultipleBusesMessage::class => new IteratorArgument(array(new Reference(MultipleBusesMessageHandler::class))),
             ),
             $queryBusHandlersLocatorDefinition->getArgument(0)
         );
@@ -155,13 +155,10 @@ class MessengerPassTest extends TestCase
         $handlersMapping = $container->getDefinition($busId.'.messenger.handlers_locator')->getArgument(0);
 
         $this->assertArrayHasKey(DummyMessage::class, $handlersMapping);
-        $this->assertEquals(new Reference("messenger.handlers.$busId.".DummyMessage::class), $handlersMapping[DummyMessage::class]);
+        $this->assertEquals(new IteratorArgument(array(new Reference(HandlerWithMultipleMessages::class))), $handlersMapping[DummyMessage::class]);
 
         $this->assertArrayHasKey(SecondMessage::class, $handlersMapping);
-        $handlersDefinition = $container->getDefinition($handlersMapping[SecondMessage::class]);
-
-        $this->assertSame(RewindableGenerator::class, $handlersDefinition->getClass());
-        $this->assertEquals(array(new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class)), $handlersDefinition->getArgument(0)[0]);
+        $this->assertEquals(new IteratorArgument(array(new Reference(PrioritizedHandler::class), new Reference(HandlerWithMultipleMessages::class))), $handlersMapping[SecondMessage::class]);
     }
 
     public function testGetClassesAndMethodsAndPrioritiesFromTheSubscriber()
@@ -183,13 +180,13 @@ class MessengerPassTest extends TestCase
         $this->assertArrayHasKey(DummyMessage::class, $handlersMapping);
         $this->assertArrayHasKey(SecondMessage::class, $handlersMapping);
 
-        $dummyHandlerReference = $container->getDefinition($handlersMapping[DummyMessage::class])->getArgument(0)[0][0];
+        $dummyHandlerReference = $handlersMapping[DummyMessage::class]->getValues()[0];
         $dummyHandlerDefinition = $container->getDefinition($dummyHandlerReference);
         $this->assertSame('callable', $dummyHandlerDefinition->getClass());
         $this->assertEquals(array(new Reference(HandlerMappingMethods::class), 'dummyMethod'), $dummyHandlerDefinition->getArgument(0));
         $this->assertSame(array('Closure', 'fromCallable'), $dummyHandlerDefinition->getFactory());
 
-        $secondHandlerReference = $container->getDefinition($handlersMapping[SecondMessage::class])->getArgument(0)[0][1];
+        $secondHandlerReference = $handlersMapping[SecondMessage::class]->getValues()[1];
         $secondHandlerDefinition = $container->getDefinition($secondHandlerReference);
         $this->assertSame(PrioritizedHandler::class, $secondHandlerDefinition->getClass());
     }
@@ -281,11 +278,11 @@ class MessengerPassTest extends TestCase
         $handlersMapping = $container->getDefinition($busId.'.messenger.handlers_locator')->getArgument(0);
 
         $this->assertArrayHasKey(DummyMessage::class, $handlersMapping);
-        $firstReference = $container->getDefinition($handlersMapping[DummyMessage::class])->getArgument(0)[0][0];
+        $firstReference = $handlersMapping[DummyMessage::class]->getValues()[0];
         $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'dummyMethod'), $container->getDefinition($firstReference)->getArgument(0));
 
         $this->assertArrayHasKey(SecondMessage::class, $handlersMapping);
-        $secondReference = $container->getDefinition($handlersMapping[SecondMessage::class])->getArgument(0)[0][0];
+        $secondReference = $handlersMapping[SecondMessage::class]->getValues()[0];
         $this->assertEquals(array(new Reference(HandlerWithGenerators::class), 'secondMessage'), $container->getDefinition($secondReference)->getArgument(0));
     }
 
@@ -304,13 +301,13 @@ class MessengerPassTest extends TestCase
         $eventsHandlerMapping = $container->getDefinition($eventsBusId.'.messenger.handlers_locator')->getArgument(0);
 
         $this->assertEquals(array(DummyMessage::class), array_keys($eventsHandlerMapping));
-        $firstReference = $container->getDefinition($eventsHandlerMapping[DummyMessage::class])->getArgument(0)[0][0];
+        $firstReference = $eventsHandlerMapping[DummyMessage::class]->getValues()[0];
         $this->assertEquals(array(new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForEvents'), $container->getDefinition($firstReference)->getArgument(0));
 
         $commandsHandlerMapping = $container->getDefinition($commandsBusId.'.messenger.handlers_locator')->getArgument(0);
 
         $this->assertEquals(array(DummyMessage::class), array_keys($commandsHandlerMapping));
-        $firstReference = $container->getDefinition($commandsHandlerMapping[DummyMessage::class])->getArgument(0)[0][0];
+        $firstReference = $commandsHandlerMapping[DummyMessage::class]->getValues()[0];
         $this->assertEquals(array(new Reference(HandlerOnSpecificBuses::class), 'dummyMethodForCommands'), $container->getDefinition($firstReference)->getArgument(0));
     }
 

src/Symfony/Component/OptionsResolver/Debug/OptionsResolverIntrospector.php

@@ -47,7 +47,7 @@ class OptionsResolverIntrospector
      */
     public function getDefault(string $option)
     {
-        return \call_user_func($this->get, 'defaults', $option, sprintf('No default value was set for the "%s" option.', $option));
+        return ($this->get)('defaults', $option, sprintf('No default value was set for the "%s" option.', $option));
     }
 
     /**
@@ -57,7 +57,7 @@ class OptionsResolverIntrospector
      */
     public function getLazyClosures(string $option): array
     {
-        return \call_user_func($this->get, 'lazy', $option, sprintf('No lazy closures were set for the "%s" option.', $option));
+        return ($this->get)('lazy', $option, sprintf('No lazy closures were set for the "%s" option.', $option));
     }
 
     /**
@@ -67,7 +67,7 @@ class OptionsResolverIntrospector
      */
     public function getAllowedTypes(string $option): array
     {
-        return \call_user_func($this->get, 'allowedTypes', $option, sprintf('No allowed types were set for the "%s" option.', $option));
+        return ($this->get)('allowedTypes', $option, sprintf('No allowed types were set for the "%s" option.', $option));
     }
 
     /**
@@ -77,7 +77,7 @@ class OptionsResolverIntrospector
      */
     public function getAllowedValues(string $option): array
     {
-        return \call_user_func($this->get, 'allowedValues', $option, sprintf('No allowed values were set for the "%s" option.', $option));
+        return ($this->get)('allowedValues', $option, sprintf('No allowed values were set for the "%s" option.', $option));
     }
 
     /**
@@ -85,7 +85,7 @@ class OptionsResolverIntrospector
      */
     public function getNormalizer(string $option): \Closure
     {
-        return \call_user_func($this->get, 'normalizers', $option, sprintf('No normalizer was set for the "%s" option.', $option));
+        return ($this->get)('normalizers', $option, sprintf('No normalizer was set for the "%s" option.', $option));
     }
 
     /**
@@ -95,6 +95,6 @@ class OptionsResolverIntrospector
      */
     public function getDeprecationMessage(string $option)
     {
-        return \call_user_func($this->get, 'deprecated', $option, sprintf('No deprecation was set for the "%s" option.', $option));
+        return ($this->get)('deprecated', $option, sprintf('No deprecation was set for the "%s" option.', $option));
     }
 }

src/Symfony/Component/Process/Process.php

@@ -1309,7 +1309,7 @@ class Process implements \IteratorAggregate
         if ($this->outputDisabled) {
             return function ($type, $data) use ($callback) {
                 if (null !== $callback) {
-                    return \call_user_func($callback, $type, $data);
+                    return $callback($type, $data);
                 }
             };
         }
@@ -1324,7 +1324,7 @@ class Process implements \IteratorAggregate
             }
 
             if (null !== $callback) {
-                return \call_user_func($callback, $type, $data);
+                return $callback($type, $data);
             }
         };
     }

src/Symfony/Component/Routing/Loader/ObjectRouteLoader.php

@@ -67,7 +67,7 @@ abstract class ObjectRouteLoader extends Loader
             throw new \BadMethodCallException(sprintf('Method "%s" not found on "%s" when importing routing resource "%s"', $method, \get_class($loaderObject), $resource));
         }
 
-        $routeCollection = \call_user_func(array($loaderObject, $method), $this);
+        $routeCollection = $loaderObject->$method($this);
 
         if (!$routeCollection instanceof RouteCollection) {
             $type = \is_object($routeCollection) ? \get_class($routeCollection) : \gettype($routeCollection);

src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php

@@ -96,14 +96,22 @@ class GuardAuthenticationListener implements ListenerInterface
         $request = $event->getRequest();
         try {
             if (null !== $this->logger) {
-                $this->logger->debug('Calling getCredentials() on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                $this->logger->debug('Checking support on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
             }
 
             // abort the execution of the authenticator if it doesn't support the request
             if (!$guardAuthenticator->supports($request)) {
+                if (null !== $this->logger) {
+                    $this->logger->debug('Guard authenticator does not support the request.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+                }
+
                 return;
             }
 
+            if (null !== $this->logger) {
+                $this->logger->debug('Calling getCredentials() on guard authenticator.', array('firewall_key' => $this->providerKey, 'authenticator' => \get_class($guardAuthenticator)));
+            }
+
             // allow the authenticator to fetch authentication info from the request
             $credentials = $guardAuthenticator->getCredentials($request);
 

src/Symfony/Component/Security/Http/Util/TargetPathTrait.php

@@ -38,7 +38,7 @@ trait TargetPathTrait
      * @param SessionInterface $session
      * @param string           $providerKey The name of your firewall
      *
-     * @return string
+     * @return string|null
      */
     private function getTargetPath(SessionInterface $session, $providerKey)
     {

src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php

@@ -413,25 +413,9 @@ abstract class AbstractNormalizer implements NormalizerInterface, DenormalizerIn
                         unset($data[$key]);
                         continue;
                     }
-                    try {
-                        if (null !== $constructorParameter->getClass()) {
-                            if (!$this->serializer instanceof DenormalizerInterface) {
-                                throw new LogicException(sprintf('Cannot create an instance of %s from serialized data because the serializer inject in "%s" is not a denormalizer', $constructorParameter->getClass(), self::class));
-                            }
-                            $parameterClass = $constructorParameter->getClass()->getName();
-                            $parameterData = $this->serializer->denormalize($parameterData, $parameterClass, $format, $this->createChildContext($context, $paramName));
-                        }
-                    } catch (\ReflectionException $e) {
-                        throw new RuntimeException(sprintf('Could not determine the class of the parameter "%s".', $key), 0, $e);
-                    } catch (MissingConstructorArgumentsException $e) {
-                        if (!$constructorParameter->getType()->allowsNull()) {
-                            throw $e;
-                        }
-                        $parameterData = null;
-                    }
 
                     // Don't run set for a parameter passed to the constructor
-                    $params[] = $parameterData;
+                    $params[] = $this->denormalizeParameter($reflectionClass, $constructorParameter, $paramName, $parameterData, $context, $format);
                     unset($data[$key]);
                 } elseif (array_key_exists($key, $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class] ?? array())) {
                     $params[] = $context[static::DEFAULT_CONSTRUCTOR_ARGUMENTS][$class][$key];
@@ -454,6 +438,31 @@ abstract class AbstractNormalizer implements NormalizerInterface, DenormalizerIn
         return new $class();
     }
 
+    /**
+     * @internal
+     */
+    protected function denormalizeParameter(\ReflectionClass $class, \ReflectionParameter $parameter, $parameterName, $parameterData, array $context, $format = null)
+    {
+        try {
+            if (null !== $parameter->getClass()) {
+                if (!$this->serializer instanceof DenormalizerInterface) {
+                    throw new LogicException(sprintf('Cannot create an instance of %s from serialized data because the serializer inject in "%s" is not a denormalizer', $parameter->getClass(), self::class));
+                }
+                $parameterClass = $parameter->getClass()->getName();
+                $parameterData = $this->serializer->denormalize($parameterData, $parameterClass, $format, $this->createChildContext($context, $parameterName));
+            }
+        } catch (\ReflectionException $e) {
+            throw new RuntimeException(sprintf('Could not determine the class of the parameter "%s".', $parameterName), 0, $e);
+        } catch (MissingConstructorArgumentsException $e) {
+            if (!$parameter->getType()->allowsNull()) {
+                throw $e;
+            }
+            $parameterData = null;
+        }
+
+        return $parameterData;
+    }
+
     /**
      * @param array  $parentContext
      * @param string $attribute

src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php

@@ -94,7 +94,7 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
         $data = array();
         $stack = array();
         $attributes = $this->getAttributes($object, $format, $context);
-        $class = $this->objectClassResolver ? \call_user_func($this->objectClassResolver, $object) : \get_class($object);
+        $class = $this->objectClassResolver ? ($this->objectClassResolver)($object) : \get_class($object);
         $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
         $maxDepthHandler = $context[self::MAX_DEPTH_HANDLER] ?? $this->defaultContext[self::MAX_DEPTH_HANDLER] ?? $this->maxDepthHandler;
 
@@ -106,7 +106,7 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
 
             $attributeValue = $this->getAttributeValue($object, $attribute, $format, $context);
             if ($maxDepthReached) {
-                $attributeValue = \call_user_func($maxDepthHandler, $attributeValue, $object, $attribute, $format, $context);
+                $attributeValue = $maxDepthHandler($attributeValue, $object, $attribute, $format, $context);
             }
 
             /**
@@ -168,7 +168,7 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
      */
     protected function getAttributes($object, $format = null, array $context)
     {
-        $class = $this->objectClassResolver ? \call_user_func($this->objectClassResolver, $object) : \get_class($object);
+        $class = $this->objectClassResolver ? ($this->objectClassResolver)($object) : \get_class($object);
         $key = $class.'-'.$context['cache_key'];
 
         if (isset($this->attributesCache[$key])) {
@@ -363,7 +363,7 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
                 return (float) $data;
             }
 
-            if (\call_user_func('is_'.$builtinType, $data)) {
+            if (('is_'.$builtinType)($data)) {
                 return $data;
             }
         }
@@ -375,6 +375,18 @@ abstract class AbstractObjectNormalizer extends AbstractNormalizer
         throw new NotNormalizableValueException(sprintf('The type of the "%s" attribute for class "%s" must be one of "%s" ("%s" given).', $attribute, $currentClass, implode('", "', array_keys($expectedTypes)), \gettype($data)));
     }
 
+    /**
+     * @internal
+     */
+    protected function denormalizeParameter(\ReflectionClass $class, \ReflectionParameter $parameter, $parameterName, $parameterData, array $context, $format = null)
+    {
+        if (null === $this->propertyTypeExtractor || null === $types = $this->propertyTypeExtractor->getTypes($class->getName(), $parameterName)) {
+            return parent::denormalizeParameter($class, $parameter, $parameterName, $parameterData, $context, $format);
+        }
+
+        return $this->validateAndDenormalize($class->getName(), $parameterName, $parameterData, $format, $context);
+    }
+
     /**
      * @return Type[]|null
      */

src/Symfony/Component/Serializer/Normalizer/ArrayDenormalizer.php

@@ -53,7 +53,7 @@ class ArrayDenormalizer implements ContextAwareDenormalizerInterface, Serializer
 
         $builtinType = isset($context['key_type']) ? $context['key_type']->getBuiltinType() : null;
         foreach ($data as $key => $value) {
-            if (null !== $builtinType && !\call_user_func('is_'.$builtinType, $key)) {
+            if (null !== $builtinType && !('is_'.$builtinType)($key)) {
                 throw new NotNormalizableValueException(sprintf('The type of the key "%s" must be "%s" ("%s" given).', $key, $builtinType, \gettype($key)));
             }
 

src/Symfony/Component/Serializer/Tests/DeserializeNestedArrayOfObjectsTest.php

@@ -0,0 +1,128 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Serializer\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor;
+use Symfony\Component\Serializer\Encoder\JsonEncoder;
+use Symfony\Component\Serializer\Normalizer\ArrayDenormalizer;
+use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
+use Symfony\Component\Serializer\Serializer;
+
+class DeserializeNestedArrayOfObjectsTest extends TestCase
+{
+    public function provider()
+    {
+        return array(
+            //from property PhpDoc
+            array(Zoo::class),
+            //from argument constructor PhpDoc
+            array(ZooImmutable::class),
+        );
+    }
+
+    /**
+     * @dataProvider provider
+     */
+    public function testPropertyPhpDoc($class)
+    {
+        //GIVEN
+        $json = <<<EOF
+{
+    "animals": [
+        {"name": "Bug"}
+    ]
+}
+EOF;
+        $serializer = new Serializer(array(
+            new ObjectNormalizer(null, null, null, new PhpDocExtractor()),
+            new ArrayDenormalizer(),
+        ), array('json' => new JsonEncoder()));
+        //WHEN
+        /** @var Zoo $zoo */
+        $zoo = $serializer->deserialize($json, $class, 'json');
+        //THEN
+        self::assertCount(1, $zoo->getAnimals());
+        self::assertInstanceOf(Animal::class, $zoo->getAnimals()[0]);
+    }
+}
+
+class Zoo
+{
+    /** @var Animal[] */
+    private $animals = array();
+
+    /**
+     * @return Animal[]
+     */
+    public function getAnimals()
+    {
+        return $this->animals;
+    }
+
+    /**
+     * @param Animal[] $animals
+     */
+    public function setAnimals(array $animals)
+    {
+        $this->animals = $animals;
+    }
+}
+
+class ZooImmutable
+{
+    /** @var Animal[] */
+    private $animals = array();
+
+    /**
+     * @param Animal[] $animals
+     */
+    public function __construct(array $animals = array())
+    {
+        $this->animals = $animals;
+    }
+
+    /**
+     * @return Animal[]
+     */
+    public function getAnimals()
+    {
+        return $this->animals;
+    }
+}
+
+class Animal
+{
+    /** @var string */
+    private $name;
+
+    public function __construct()
+    {
+        echo '';
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string|null $name
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+    }
+}

src/Symfony/Component/Templating/PhpEngine.php

@@ -313,13 +313,13 @@ class PhpEngine implements EngineInterface, \ArrayAccess
         // the performance when the same value is escaped multiple times (e.g. loops)
         if (is_scalar($value)) {
             if (!isset(self::$escaperCache[$context][$value])) {
-                self::$escaperCache[$context][$value] = \call_user_func($this->getEscaper($context), $value);
+                self::$escaperCache[$context][$value] = $this->getEscaper($context)($value);
             }
 
             return self::$escaperCache[$context][$value];
         }
 
-        return \call_user_func($this->getEscaper($context), $value);
+        return $this->getEscaper($context)($value);
     }
 
     /**

src/Symfony/Component/Translation/Command/XliffLintCommand.php

@@ -242,7 +242,7 @@ EOF
         };
 
         if (null !== $this->directoryIteratorProvider) {
-            return \call_user_func($this->directoryIteratorProvider, $directory, $default);
+            return ($this->directoryIteratorProvider)($directory, $default);
         }
 
         return $default($directory);
@@ -255,7 +255,7 @@ EOF
         };
 
         if (null !== $this->isReadableProvider) {
-            return \call_user_func($this->isReadableProvider, $fileOrDirectory, $default);
+            return ($this->isReadableProvider)($fileOrDirectory, $default);
         }
 
         return $default($fileOrDirectory);

src/Symfony/Component/Translation/PluralizationRules.php

@@ -46,7 +46,7 @@ class PluralizationRules
         }
 
         if (isset(self::$rules[$locale])) {
-            $return = \call_user_func(self::$rules[$locale], $number);
+            $return = self::$rules[$locale]($number);
 
             if (!\is_int($return) || $return < 0) {
                 return 0;

src/Symfony/Component/Validator/Constraints/CallbackValidator.php

@@ -43,7 +43,7 @@ class CallbackValidator extends ConstraintValidator
                 throw new ConstraintDefinitionException(sprintf('%s targeted by Callback constraint is not a valid callable', json_encode($method)));
             }
 
-            \call_user_func($method, $object, $this->context, $constraint->payload);
+            $method($object, $this->context, $constraint->payload);
         } elseif (null !== $object) {
             if (!method_exists($object, $method)) {
                 throw new ConstraintDefinitionException(sprintf('Method "%s" targeted by Callback constraint does not exist in class %s', $method, \get_class($object)));

src/Symfony/Component/Validator/Constraints/ChoiceValidator.php

@@ -54,7 +54,7 @@ class ChoiceValidator extends ConstraintValidator
             ) {
                 throw new ConstraintDefinitionException('The Choice constraint expects a valid callback');
             }
-            $choices = \call_user_func($choices);
+            $choices = $choices();
         } else {
             $choices = $constraint->choices;
         }

src/Symfony/Component/Validator/Constraints/IbanValidator.php

@@ -130,6 +130,7 @@ class IbanValidator extends ConstraintValidator
         'TN' => 'TN59\d{2}\d{3}\d{13}\d{2}', // Tunisia
         'TR' => 'TR\d{2}\d{5}[\dA-Z]{1}[\dA-Z]{16}', // Turkey
         'UA' => 'UA\d{2}\d{6}[\dA-Z]{19}', // Ukraine
+        'VA' => 'VA\d{2}\d{3}\d{15}', // Vatican City State
         'VG' => 'VG\d{2}[A-Z]{4}\d{16}', // Virgin Islands, British
         'WF' => 'FR\d{2}\d{5}\d{5}[\dA-Z]{11}\d{2}', // Wallis and Futuna Islands
         'XK' => 'XK\d{2}\d{4}\d{10}\d{2}', // Republic of Kosovo

src/Symfony/Component/Validator/Tests/Constraints/IbanValidatorTest.php

@@ -156,6 +156,7 @@ class IbanValidatorTest extends ConstraintValidatorTestCase
             array('TR330006100519786457841326'), //Turkey
             array('UA213223130000026007233566001'), //Ukraine
             array('AE260211000000230064016'), //United Arab Emirates
+            array('VA59001123000012345678'), //Vatican City State
         );
     }
 
@@ -274,6 +275,7 @@ class IbanValidatorTest extends ConstraintValidatorTestCase
             array('TR3300061005197864578413261'), //Turkey
             array('UA21AAAA1300000260072335660012'), //Ukraine
             array('AE2602110000002300640161'), //United Arab Emirates
+            array('VA590011230000123456781'), //Vatican City State
         );
     }
 
@@ -385,6 +387,7 @@ class IbanValidatorTest extends ConstraintValidatorTestCase
             array('TR330006100519786457841327'), //Turkey
             array('UA213223130000026007233566002'), //Ukraine
             array('AE260211000000230064017'), //United Arab Emirates
+            array('VA59001123000012345671'), //Vatican City State
         );
     }
 

src/Symfony/Component/Validator/Tests/Validator/RecursiveValidatorTest.php

@@ -12,6 +12,10 @@
 namespace Symfony\Component\Validator\Tests\Validator;
 
 use Symfony\Component\Translation\IdentityTranslator;
+use Symfony\Component\Validator\Constraints\All;
+use Symfony\Component\Validator\Constraints\Collection;
+use Symfony\Component\Validator\Constraints\Length;
+use Symfony\Component\Validator\Constraints\NotBlank;
 use Symfony\Component\Validator\ConstraintValidatorFactory;
 use Symfony\Component\Validator\Context\ExecutionContextFactory;
 use Symfony\Component\Validator\Mapping\Factory\MetadataFactoryInterface;
@@ -95,4 +99,38 @@ class RecursiveValidatorTest extends AbstractTest
 
         $validator->validate($entity, null, array());
     }
+
+    public function testCollectionConstraintValidateAllGroupsForNestedConstraints()
+    {
+        $this->metadata->addPropertyConstraint('data', new Collection(array('fields' => array(
+            'one' => array(new NotBlank(array('groups' => 'one')), new Length(array('min' => 2, 'groups' => 'two'))),
+            'two' => array(new NotBlank(array('groups' => 'two'))),
+        ))));
+
+        $entity = new Entity();
+        $entity->data = array('one' => 't', 'two' => '');
+
+        $violations = $this->validator->validate($entity, null, array('one', 'two'));
+
+        $this->assertCount(2, $violations);
+        $this->assertInstanceOf(Length::class, $violations->get(0)->getConstraint());
+        $this->assertInstanceOf(NotBlank::class, $violations->get(1)->getConstraint());
+    }
+
+    public function testAllConstraintValidateAllGroupsForNestedConstraints()
+    {
+        $this->metadata->addPropertyConstraint('data', new All(array('constraints' => array(
+            new NotBlank(array('groups' => 'one')),
+            new Length(array('min' => 2, 'groups' => 'two')),
+        ))));
+
+        $entity = new Entity();
+        $entity->data = array('one' => 't', 'two' => '');
+
+        $violations = $this->validator->validate($entity, null, array('one', 'two'));
+
+        $this->assertCount(2, $violations);
+        $this->assertInstanceOf(NotBlank::class, $violations->get(0)->getConstraint());
+        $this->assertInstanceOf(Length::class, $violations->get(1)->getConstraint());
+    }
 }

src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Validator\Validator;
 
 use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\Constraints\Composite;
 use Symfony\Component\Validator\Constraints\GroupSequence;
 use Symfony\Component\Validator\ConstraintValidatorFactoryInterface;
 use Symfony\Component\Validator\Context\ExecutionContext;
@@ -788,6 +789,10 @@ class RecursiveContextualValidator implements ContextualValidatorInterface
             if (null !== $cacheKey) {
                 $constraintHash = spl_object_hash($constraint);
 
+                if ($constraint instanceof Composite) {
+                    $constraintHash .= $group;
+                }
+
                 if ($context->isConstraintValidated($cacheKey, $constraintHash)) {
                     continue;
                 }

src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php

@@ -231,7 +231,7 @@ abstract class AbstractCloner implements ClonerInterface
             }
 
             if ($this->prevErrorHandler) {
-                return \call_user_func($this->prevErrorHandler, $type, $msg, $file, $line, $context);
+                return ($this->prevErrorHandler)($type, $msg, $file, $line, $context);
             }
 
             return false;

src/Symfony/Component/VarDumper/Dumper/AbstractDumper.php

@@ -164,7 +164,7 @@ abstract class AbstractDumper implements DataDumperInterface, DumperInterface
      */
     protected function dumpLine($depth)
     {
-        \call_user_func($this->lineDumper, $this->line, $depth, $this->indentPad);
+        ($this->lineDumper)($this->line, $depth, $this->indentPad);
         $this->line = '';
     }
 

src/Symfony/Component/VarDumper/VarDumper.php

@@ -41,7 +41,7 @@ class VarDumper
             };
         }
 
-        return \call_user_func(self::$handler, $var);
+        return (self::$handler)($var);
     }
 
     public static function setHandler(callable $callable = null)

src/Symfony/Component/VarExporter/Internal/Registry.php

@@ -93,15 +93,9 @@ class Registry
                     throw new NotInstantiableTypeException($class);
                 }
             }
-            if (null !== $proto && !$proto instanceof \Throwable) {
+            if (null !== $proto && !$proto instanceof \Throwable && !$proto instanceof \Serializable && !\method_exists($class, '__sleep')) {
                 try {
-                    if (!$proto instanceof \Serializable && !\method_exists($class, '__sleep')) {
-                        serialize($proto);
-                    } elseif ($instantiableWithoutConstructor) {
-                        serialize($reflector->newInstanceWithoutConstructor());
-                    } else {
-                        serialize(unserialize(($proto instanceof \Serializable ? 'C:' : 'O:').\strlen($class).':"'.$class.'":0:{}'));
-                    }
+                    serialize($proto);
                 } catch (\Exception $e) {
                     throw new NotInstantiableTypeException($class, $e);
                 }

src/Symfony/Component/VarExporter/Tests/Fixtures/foo-serializable.php

@@ -0,0 +1,11 @@
+<?php
+
+return \Symfony\Component\VarExporter\Internal\Hydrator::hydrate(
+    $o = \Symfony\Component\VarExporter\Internal\Registry::unserialize([], [
+        'C:51:"Symfony\\Component\\VarExporter\\Tests\\FooSerializable":20:{a:1:{i:0;s:3:"bar";}}',
+    ]),
+    null,
+    [],
+    $o[0],
+    []
+);

src/Symfony/Component/VarExporter/Tests/VarExporterTest.php

@@ -194,6 +194,8 @@ class VarExporterTest extends TestCase
         yield array('wakeup-refl', $value);
 
         yield array('abstract-parent', new ConcreteClass());
+
+        yield array('foo-serializable', new FooSerializable('bar'));
     }
 }
 
@@ -342,3 +344,28 @@ class ConcreteClass extends AbstractClass
         $this->setBar(234);
     }
 }
+
+class FooSerializable implements \Serializable
+{
+    private $foo;
+
+    public function __construct(string $foo)
+    {
+        $this->foo = $foo;
+    }
+
+    public function getFoo(): string
+    {
+        return $this->foo;
+    }
+
+    public function serialize(): string
+    {
+        return serialize(array($this->getFoo()));
+    }
+
+    public function unserialize($str)
+    {
+        list($this->foo) = unserialize($str);
+    }
+}

src/Symfony/Component/WebLink/README.md

@@ -11,7 +11,7 @@ It can also be used with extensions defined in the [HTML5 link type extensions w
 Resources
 ---------
 
-  * [Documentation](https://symfony.com/doc/current/components/weblink/introduction.html)
+  * [Documentation](https://symfony.com/doc/current/components/web_link.html)
   * [Contributing](https://symfony.com/doc/current/contributing/index.html)
   * [Report issues](https://github.com/symfony/symfony/issues) and
     [send Pull Requests](https://github.com/symfony/symfony/pulls)