diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 2d64894f41..94f0fabcc4 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -4,7 +4,7 @@
 | Bug fix?      | yes/no
 | New feature?  | yes/no <!-- don't forget to update src/**/CHANGELOG.md files -->
 | BC breaks?    | no     <!-- see https://symfony.com/bc -->
-| Deprecations? | yes/no <!-- don't forget to update UPGRADE-*.md files -->
+| Deprecations? | yes/no <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
 | Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
 | Fixed tickets | #...   <!-- #-prefixed issue number(s), if any -->
 | License       | MIT
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 0b1fbb47f3..1034172772 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -43,11 +43,11 @@ Symfony is the result of the work of many people who made the code better
  - Diego Saint Esteben (dosten)
  - Alexandre Salomé (alexandresalome)
  - William Durand (couac)
+ - Hamza Amrouche (simperfit)
  - ornicar
  - Francis Besset (francisbesset)
  - Iltar van der Berg (kjarli)
  - stealth35 ‏ (stealth35)
- - Hamza Amrouche (simperfit)
  - Alexander Mols (asm89)
  - Yonel Ceruto (yonelceruto)
  - Bulat Shakirzyanov (avalanche123)
@@ -57,8 +57,8 @@ Symfony is the result of the work of many people who made the code better
  - Henrik Bjørnskov (henrikbjorn)
  - Miha Vrhovnik
  - Diego Saint Esteben (dii3g0)
- - Dany Maillard (maidmaid)
  - Pierre du Plessis (pierredup)
+ - Dany Maillard (maidmaid)
  - Konstantin Kudryashov (everzet)
  - Kevin Bond (kbond)
  - Bilal Amarni (bamarni)
@@ -66,6 +66,7 @@ Symfony is the result of the work of many people who made the code better
  - Jérémy DERUSSÉ (jderusse)
  - Florin Patan (florinpatan)
  - Samuel ROZE (sroze)
+ - Tobias Nyholm (tobias)
  - Gábor Egyed (1ed)
  - Michel Weimerskirch (mweimerskirch)
  - Andrej Hudec (pulzarraider)
@@ -75,7 +76,6 @@ Symfony is the result of the work of many people who made the code better
  - Titouan Galopin (tgalopin)
  - Konstantin Myakshin (koc)
  - Christian Raue
- - Tobias Nyholm (tobias)
  - Arnout Boks (aboks)
  - Deni
  - Henrik Westphal (snc)
@@ -200,6 +200,7 @@ Symfony is the result of the work of many people who made the code better
  - Matthieu Bontemps (mbontemps)
  - apetitpa
  - Pierre Minnieur (pminnieur)
+ - Jannik Zschiesche (apfelbox)
  - fivestar
  - Dominique Bongiraud
  - Jeremy Livingston (jeremylivingston)
@@ -224,7 +225,6 @@ Symfony is the result of the work of many people who made the code better
  - Marcel Beerta (mazen)
  - gadelat (gadelat)
  - Loïc Faugeron
- - Jannik Zschiesche (apfelbox)
  - Hidde Wieringa (hiddewie)
  - Marco Pivetta (ocramius)
  - Rob Frawley 2nd (robfrawley)
@@ -697,6 +697,7 @@ Symfony is the result of the work of many people who made the code better
  - Nykopol (nykopol)
  - Jordan Deitch
  - Casper Valdemar Poulsen
+ - Remon van de Kamp
  - Josiah (josiah)
  - Joschi Kuphal
  - John Bohn (jbohn)
@@ -736,6 +737,7 @@ Symfony is the result of the work of many people who made the code better
  - Adrien Lucas (adrienlucas)
  - Zhuravlev Alexander (scif)
  - James Michael DuPont
+ - Xavier HAUSHERR
  - Tom Klingenberg
  - Christopher Hall (mythmakr)
  - Patrick Dawkins (pjcdawkins)
@@ -1102,7 +1104,6 @@ Symfony is the result of the work of many people who made the code better
  - Pierre Tachoire (krichprollsch)
  - Marc J. Schmidt (marcjs)
  - Marco Jantke
- - Remon van de Kamp
  - Saem Ghani
  - Clément LEFEBVRE
  - Conrad Kleinespel
@@ -1225,7 +1226,6 @@ Symfony is the result of the work of many people who made the code better
  - Sebastian Ionescu
  - Thomas Ploch
  - Simon Neidhold
- - Xavier HAUSHERR
  - Valentin VALCIU
  - Jeremiah VALERIE
  - Kevin Dew
@@ -1573,6 +1573,7 @@ Symfony is the result of the work of many people who made the code better
  - Vladimir Chernyshev (volch)
  - Yorkie Chadwick (yorkie76)
  - GuillaumeVerdon
+ - Philipp Keck
  - Ondrej Mirtes
  - akimsko
  - Youpie
@@ -1630,6 +1631,7 @@ Symfony is the result of the work of many people who made the code better
  - Jordan Hoff
  - znerol
  - Christian Eikermann
+ - Kai Eichinger
  - Antonio Angelino
  - Matt Fields
  - Niklas Keller
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index e44535a81a..59ec772525 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -65,6 +65,7 @@
                             <element><string>Cache\IntegrationTests</string></element>
                             <element><string>Doctrine\Common\Cache</string></element>
                             <element><string>Symfony\Component\Cache</string></element>
+                            <element><string>Symfony\Component\Cache\Tests\Fixtures</string></element>
                             <element><string>Symfony\Component\Cache\Traits</string></element>
                             <element><string>Symfony\Component\Console</string></element>
                             <element><string>Symfony\Component\HttpFoundation</string></element>
diff --git a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
index 86d96f08a1..a46617db08 100644
--- a/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
+++ b/src/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
@@ -104,7 +104,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
         $classMetadata = $classMetadatas[0];
 
         // Check whether the field exists and is nullable or not
-        if ($classMetadata->hasField($property)) {
+        if (isset($classMetadata->fieldMappings[$property])) {
             if (!$classMetadata->isNullable($property) && Type::BOOLEAN !== $classMetadata->getTypeOfField($property)) {
                 return new ValueGuess(true, Guess::HIGH_CONFIDENCE);
             }
@@ -133,7 +133,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
     public function guessMaxLength($class, $property)
     {
         $ret = $this->getMetadata($class);
-        if ($ret && $ret[0]->hasField($property) && !$ret[0]->hasAssociation($property)) {
+        if ($ret && isset($ret[0]->fieldMappings[$property]) && !$ret[0]->hasAssociation($property)) {
             $mapping = $ret[0]->getFieldMapping($property);
 
             if (isset($mapping['length'])) {
@@ -152,7 +152,7 @@ class DoctrineOrmTypeGuesser implements FormTypeGuesserInterface
     public function guessPattern($class, $property)
     {
         $ret = $this->getMetadata($class);
-        if ($ret && $ret[0]->hasField($property) && !$ret[0]->hasAssociation($property)) {
+        if ($ret && isset($ret[0]->fieldMappings[$property]) && !$ret[0]->hasAssociation($property)) {
             if (in_array($ret[0]->getTypeOfField($property), array(Type::DECIMAL, Type::FLOAT))) {
                 return new ValueGuess(null, Guess::MEDIUM_CONFIDENCE);
             }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
index 12296729e2..0eda4a3ba6 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/DoctrineOrmTypeGuesserTest.php
@@ -33,21 +33,20 @@ class DoctrineOrmTypeGuesserTest extends TestCase
 
         // Simple field, not nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(true));
+        $classMetadata->fieldMappings['field'] = true;
         $classMetadata->expects($this->once())->method('isNullable')->with('field')->will($this->returnValue(false));
 
         $return[] = array($classMetadata, new ValueGuess(true, Guess::HIGH_CONFIDENCE));
 
         // Simple field, nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(true));
+        $classMetadata->fieldMappings['field'] = true;
         $classMetadata->expects($this->once())->method('isNullable')->with('field')->will($this->returnValue(true));
 
         $return[] = array($classMetadata, new ValueGuess(false, Guess::MEDIUM_CONFIDENCE));
 
         // One-to-one, nullable (by default)
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(false));
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
         $mapping = array('joinColumns' => array(array()));
@@ -57,7 +56,6 @@ class DoctrineOrmTypeGuesserTest extends TestCase
 
         // One-to-one, nullable (explicit)
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(false));
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
         $mapping = array('joinColumns' => array(array('nullable' => true)));
@@ -67,7 +65,6 @@ class DoctrineOrmTypeGuesserTest extends TestCase
 
         // One-to-one, not nullable
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(false));
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(true));
 
         $mapping = array('joinColumns' => array(array('nullable' => false)));
@@ -77,7 +74,6 @@ class DoctrineOrmTypeGuesserTest extends TestCase
 
         // One-to-many, no clue
         $classMetadata = $this->getMockBuilder('Doctrine\ORM\Mapping\ClassMetadata')->disableOriginalConstructor()->getMock();
-        $classMetadata->expects($this->once())->method('hasField')->with('field')->will($this->returnValue(false));
         $classMetadata->expects($this->once())->method('isAssociationWithSingleJoinColumn')->with('field')->will($this->returnValue(false));
 
         $return[] = array($classMetadata, null);
diff --git a/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php b/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
index db388ab70b..a921582dba 100644
--- a/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
+++ b/src/Symfony/Bridge/Twig/Translation/TwigExtractor.php
@@ -54,8 +54,7 @@ class TwigExtractor extends AbstractFileExtractor implements ExtractorInterface
      */
     public function extract($resource, MessageCatalogue $catalogue)
     {
-        $files = $this->extractFiles($resource);
-        foreach ($files as $file) {
+        foreach ($this->extractFiles($resource) as $file) {
             try {
                 $this->extractTemplate(file_get_contents($file->getPathname()), $catalogue);
             } catch (Error $e) {
diff --git a/src/Symfony/Bridge/Twig/composer.json b/src/Symfony/Bridge/Twig/composer.json
index e2557ebc47..402c4ed9a8 100644
--- a/src/Symfony/Bridge/Twig/composer.json
+++ b/src/Symfony/Bridge/Twig/composer.json
@@ -23,7 +23,7 @@
         "symfony/asset": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/finder": "~3.4|~4.0",
-        "symfony/form": "^3.4.5|^4.0.5",
+        "symfony/form": "^3.4.7|^4.0.7",
         "symfony/http-foundation": "~3.4|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
@@ -41,7 +41,7 @@
         "symfony/workflow": "~3.4|~4.0"
     },
     "conflict": {
-        "symfony/form": "<3.4.5|<4.0.5,>=4.0",
+        "symfony/form": "<3.4.7|<4.0.7,>=4.0",
         "symfony/console": "<3.4"
     },
     "suggest": {
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AnnotationsCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AnnotationsCacheWarmer.php
index e5839b7690..db6fe4ba61 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AnnotationsCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/AnnotationsCacheWarmer.php
@@ -28,17 +28,19 @@ class AnnotationsCacheWarmer extends AbstractPhpFileCacheWarmer
 {
     private $annotationReader;
     private $excludeRegexp;
+    private $debug;
 
     /**
      * @param Reader                 $annotationReader
      * @param string                 $phpArrayFile     The PHP file where annotations are cached
      * @param CacheItemPoolInterface $fallbackPool     The pool where runtime-discovered annotations are cached
      */
-    public function __construct(Reader $annotationReader, string $phpArrayFile, CacheItemPoolInterface $fallbackPool, string $excludeRegexp = null)
+    public function __construct(Reader $annotationReader, string $phpArrayFile, CacheItemPoolInterface $fallbackPool, string $excludeRegexp = null, bool $debug = false)
     {
         parent::__construct($phpArrayFile, $fallbackPool);
         $this->annotationReader = $annotationReader;
         $this->excludeRegexp = $excludeRegexp;
+        $this->debug = $debug;
     }
 
     /**
@@ -53,7 +55,7 @@ class AnnotationsCacheWarmer extends AbstractPhpFileCacheWarmer
         }
 
         $annotatedClasses = include $annotatedClassPatterns;
-        $reader = new CachedReader($this->annotationReader, new DoctrineProvider($arrayAdapter));
+        $reader = new CachedReader($this->annotationReader, new DoctrineProvider($arrayAdapter), $this->debug);
 
         foreach ($annotatedClasses as $class) {
             if (null !== $this->excludeRegexp && preg_match($this->excludeRegexp, $class)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php b/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
index 5877caaf59..063097d9b4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
+++ b/src/Symfony/Bundle/FrameworkBundle/HttpCache/HttpCache.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\HttpCache;
 
-use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\KernelInterface;
 use Symfony\Component\HttpKernel\HttpCache\HttpCache as BaseHttpCache;
 use Symfony\Component\HttpKernel\HttpCache\Esi;
 use Symfony\Component\HttpKernel\HttpCache\Store;
@@ -23,16 +23,16 @@ use Symfony\Component\HttpFoundation\Response;
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-abstract class HttpCache extends BaseHttpCache
+class HttpCache extends BaseHttpCache
 {
     protected $cacheDir;
     protected $kernel;
 
     /**
-     * @param HttpKernelInterface $kernel   An HttpKernelInterface instance
-     * @param string              $cacheDir The cache directory (default used if null)
+     * @param KernelInterface $kernel   A KernelInterface instance
+     * @param string          $cacheDir The cache directory (default used if null)
      */
-    public function __construct(HttpKernelInterface $kernel, string $cacheDir = null)
+    public function __construct(KernelInterface $kernel, string $cacheDir = null)
     {
         $this->kernel = $kernel;
         $this->cacheDir = $cacheDir;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.xml b/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.xml
index 6e8cc4f9e6..2b4ea42962 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.xml
@@ -38,6 +38,7 @@
             <argument>%kernel.cache_dir%/annotations.php</argument>
             <argument type="service" id="cache.annotations" />
             <argument>#^Symfony\\(?:Component\\HttpKernel\\|Bundle\\FrameworkBundle\\Controller\\(?!AbstractController$|Controller$))#</argument>
+            <argument>%kernel.debug%</argument>
         </service>
 
         <service id="annotations.cache" class="Symfony\Component\Cache\DoctrineProvider">
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php
new file mode 100644
index 0000000000..b32274e7e7
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/CacheWarmer/AnnotationsCacheWarmerTest.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\CacheWarmer;
+
+use Doctrine\Common\Annotations\AnnotationReader;
+use Doctrine\Common\Annotations\CachedReader;
+use Doctrine\Common\Annotations\Reader;
+use Symfony\Bundle\FrameworkBundle\CacheWarmer\AnnotationsCacheWarmer;
+use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Adapter\NullAdapter;
+use Symfony\Component\Cache\Adapter\PhpArrayAdapter;
+use Symfony\Component\Cache\DoctrineProvider;
+use Symfony\Component\Filesystem\Filesystem;
+
+class AnnotationsCacheWarmerTest extends TestCase
+{
+    private $cacheDir;
+
+    protected function setUp()
+    {
+        $this->cacheDir = sys_get_temp_dir().'/'.uniqid();
+        $fs = new Filesystem();
+        $fs->mkdir($this->cacheDir);
+        parent::setUp();
+    }
+
+    protected function tearDown()
+    {
+        $fs = new Filesystem();
+        $fs->remove($this->cacheDir);
+        parent::tearDown();
+    }
+
+    public function testAnnotationsCacheWarmerWithDebugDisabled()
+    {
+        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export(array(__CLASS__), true)));
+        $cacheFile = tempnam($this->cacheDir, __FUNCTION__);
+        $reader = new AnnotationReader();
+        $fallbackPool = new ArrayAdapter();
+        $warmer = new AnnotationsCacheWarmer(
+            $reader,
+            $cacheFile,
+            $fallbackPool,
+            null
+        );
+        $warmer->warmUp($this->cacheDir);
+        $this->assertFileExists($cacheFile);
+
+        // Assert cache is valid
+        $reader = new CachedReader(
+            $this->getReadOnlyReader(),
+            new DoctrineProvider(new PhpArrayAdapter($cacheFile, new NullAdapter()))
+        );
+        $refClass = new \ReflectionClass($this);
+        $reader->getClassAnnotations($refClass);
+        $reader->getMethodAnnotations($refClass->getMethod(__FUNCTION__));
+        $reader->getPropertyAnnotations($refClass->getProperty('cacheDir'));
+    }
+
+    public function testAnnotationsCacheWarmerWithDebugEnabled()
+    {
+        file_put_contents($this->cacheDir.'/annotations.map', sprintf('<?php return %s;', var_export(array(__CLASS__), true)));
+        $cacheFile = tempnam($this->cacheDir, __FUNCTION__);
+        $reader = new AnnotationReader();
+        $fallbackPool = new ArrayAdapter();
+        $warmer = new AnnotationsCacheWarmer(
+            $reader,
+            $cacheFile,
+            $fallbackPool,
+            null,
+            true
+        );
+        $warmer->warmUp($this->cacheDir);
+        $this->assertFileExists($cacheFile);
+        // Assert cache is valid
+        $reader = new CachedReader(
+            $this->getReadOnlyReader(),
+            new DoctrineProvider(new PhpArrayAdapter($cacheFile, new NullAdapter())),
+            true
+        );
+        $refClass = new \ReflectionClass($this);
+        $reader->getClassAnnotations($refClass);
+        $reader->getMethodAnnotations($refClass->getMethod(__FUNCTION__));
+        $reader->getPropertyAnnotations($refClass->getProperty('cacheDir'));
+    }
+
+    /**
+     * @return \PHPUnit_Framework_MockObject_MockObject|Reader
+     */
+    private function getReadOnlyReader()
+    {
+        $readerMock = $this->getMockBuilder('Doctrine\Common\Annotations\Reader')->getMock();
+        $readerMock->expects($this->exactly(0))->method('getClassAnnotations');
+        $readerMock->expects($this->exactly(0))->method('getClassAnnotation');
+        $readerMock->expects($this->exactly(0))->method('getMethodAnnotations');
+        $readerMock->expects($this->exactly(0))->method('getMethodAnnotation');
+        $readerMock->expects($this->exactly(0))->method('getPropertyAnnotations');
+        $readerMock->expects($this->exactly(0))->method('getPropertyAnnotation');
+
+        return $readerMock;
+    }
+}
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimpleFormFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimpleFormFactory.php
index 1f45ab1a44..c3be9ebd6d 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimpleFormFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SimpleFormFactory.php
@@ -55,6 +55,7 @@ class SimpleFormFactory extends FormLoginFactory
             ->replaceArgument(0, new Reference($config['authenticator']))
             ->replaceArgument(1, new Reference($userProviderId))
             ->replaceArgument(2, $id)
+            ->replaceArgument(3, new Reference('security.user_checker.'.$id))
         ;
 
         return $provider;
diff --git a/src/Symfony/Component/BrowserKit/Cookie.php b/src/Symfony/Component/BrowserKit/Cookie.php
index a2201c9ce1..480f02b948 100644
--- a/src/Symfony/Component/BrowserKit/Cookie.php
+++ b/src/Symfony/Component/BrowserKit/Cookie.php
@@ -44,14 +44,14 @@ class Cookie
     /**
      * Sets a cookie.
      *
-     * @param string $name         The cookie name
-     * @param string $value        The value of the cookie
-     * @param string $expires      The time the cookie expires
-     * @param string $path         The path on the server in which the cookie will be available on
-     * @param string $domain       The domain that the cookie is available
-     * @param bool   $secure       Indicates that the cookie should only be transmitted over a secure HTTPS connection from the client
-     * @param bool   $httponly     The cookie httponly flag
-     * @param bool   $encodedValue Whether the value is encoded or not
+     * @param string      $name         The cookie name
+     * @param string      $value        The value of the cookie
+     * @param string|null $expires      The time the cookie expires
+     * @param string|null $path         The path on the server in which the cookie will be available on
+     * @param string      $domain       The domain that the cookie is available
+     * @param bool        $secure       Indicates that the cookie should only be transmitted over a secure HTTPS connection from the client
+     * @param bool        $httponly     The cookie httponly flag
+     * @param bool        $encodedValue Whether the value is encoded or not
      */
     public function __construct(string $name, ?string $value, string $expires = null, string $path = null, string $domain = '', bool $secure = false, bool $httponly = true, bool $encodedValue = false)
     {
@@ -112,8 +112,8 @@ class Cookie
     /**
      * Creates a Cookie instance from a Set-Cookie header value.
      *
-     * @param string $cookie A Set-Cookie header value
-     * @param string $url    The base URL
+     * @param string      $cookie A Set-Cookie header value
+     * @param string|null $url    The base URL
      *
      * @return static
      *
@@ -242,7 +242,7 @@ class Cookie
     /**
      * Gets the expires time of the cookie.
      *
-     * @return string The cookie expires time
+     * @return string|null The cookie expires time
      */
     public function getExpiresTime()
     {
diff --git a/src/Symfony/Component/BrowserKit/CookieJar.php b/src/Symfony/Component/BrowserKit/CookieJar.php
index 232cefc8b6..7a4d64c10e 100644
--- a/src/Symfony/Component/BrowserKit/CookieJar.php
+++ b/src/Symfony/Component/BrowserKit/CookieJar.php
@@ -43,32 +43,21 @@ class CookieJar
     {
         $this->flushExpiredCookies();
 
-        if (!empty($domain)) {
-            foreach ($this->cookieJar as $cookieDomain => $pathCookies) {
-                if ($cookieDomain) {
-                    $cookieDomain = '.'.ltrim($cookieDomain, '.');
-                    if ($cookieDomain != substr('.'.$domain, -strlen($cookieDomain))) {
-                        continue;
-                    }
-                }
-
-                foreach ($pathCookies as $cookiePath => $namedCookies) {
-                    if ($cookiePath != substr($path, 0, strlen($cookiePath))) {
-                        continue;
-                    }
-                    if (isset($namedCookies[$name])) {
-                        return $namedCookies[$name];
-                    }
+        foreach ($this->cookieJar as $cookieDomain => $pathCookies) {
+            if ($cookieDomain && $domain) {
+                $cookieDomain = '.'.ltrim($cookieDomain, '.');
+                if ($cookieDomain !== substr('.'.$domain, -\strlen($cookieDomain))) {
+                    continue;
                 }
             }
 
-            return;
-        }
-
-        // avoid relying on this behavior that is mainly here for BC reasons
-        foreach ($this->cookieJar as $cookies) {
-            if (isset($cookies[$path][$name])) {
-                return $cookies[$path][$name];
+            foreach ($pathCookies as $cookiePath => $namedCookies) {
+                if (0 !== strpos($path, $cookiePath)) {
+                    continue;
+                }
+                if (isset($namedCookies[$name])) {
+                    return $namedCookies[$name];
+                }
             }
         }
     }
diff --git a/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php b/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
index 9c9e122e86..3117e5ce47 100644
--- a/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/CookieJarTest.php
@@ -237,6 +237,8 @@ class CookieJarTest extends TestCase
         $this->assertEquals($cookie1, $cookieJar->get('foo', '/test', 'example.com'));
         $this->assertEquals($cookie2, $cookieJar->get('foo1', '/', 'example.com'));
         $this->assertEquals($cookie2, $cookieJar->get('foo1', '/bar', 'example.com'));
+
+        $this->assertEquals($cookie2, $cookieJar->get('foo1', '/bar'));
     }
 
     public function testCookieWithWildcardDomain()
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
index 93ec982438..8d4dfe2858 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/DoctrineAdapterTest.php
@@ -11,8 +11,8 @@
 
 namespace Symfony\Component\Cache\Tests\Adapter;
 
-use Doctrine\Common\Cache\ArrayCache;
 use Symfony\Component\Cache\Adapter\DoctrineAdapter;
+use Symfony\Component\Cache\Tests\Fixtures\ArrayCache;
 
 /**
  * @group time-sensitive
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
new file mode 100644
index 0000000000..1a6157e822
--- /dev/null
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/ArrayCache.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace Symfony\Component\Cache\Tests\Fixtures;
+
+use Doctrine\Common\Cache\CacheProvider;
+
+class ArrayCache extends CacheProvider
+{
+    private $data = array();
+
+    protected function doFetch($id)
+    {
+        return $this->doContains($id) ? $this->data[$id][0] : false;
+    }
+
+    protected function doContains($id)
+    {
+        if (!isset($this->data[$id])) {
+            return false;
+        }
+
+        $expiry = $this->data[$id][1];
+
+        return !$expiry || time() <= $expiry || !$this->doDelete($id);
+    }
+
+    protected function doSave($id, $data, $lifeTime = 0)
+    {
+        $this->data[$id] = array($data, $lifeTime ? time() + $lifeTime : false);
+
+        return true;
+    }
+
+    protected function doDelete($id)
+    {
+        unset($this->data[$id]);
+
+        return true;
+    }
+
+    protected function doFlush()
+    {
+        $this->data = array();
+
+        return true;
+    }
+
+    protected function doGetStats()
+    {
+        return null;
+    }
+}
diff --git a/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php b/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
index 0a185297ab..127c96858c 100644
--- a/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
+++ b/src/Symfony/Component/Cache/Tests/Simple/DoctrineCacheTest.php
@@ -11,8 +11,8 @@
 
 namespace Symfony\Component\Cache\Tests\Simple;
 
-use Doctrine\Common\Cache\ArrayCache;
 use Symfony\Component\Cache\Simple\DoctrineCache;
+use Symfony\Component\Cache\Tests\Fixtures\ArrayCache;
 
 /**
  * @group time-sensitive
diff --git a/src/Symfony/Component/Cache/phpunit.xml.dist b/src/Symfony/Component/Cache/phpunit.xml.dist
index 6b5c79331d..9b3c30d76f 100644
--- a/src/Symfony/Component/Cache/phpunit.xml.dist
+++ b/src/Symfony/Component/Cache/phpunit.xml.dist
@@ -39,6 +39,7 @@
                             <element><string>Cache\IntegrationTests</string></element>
                             <element><string>Doctrine\Common\Cache</string></element>
                             <element><string>Symfony\Component\Cache</string></element>
+                            <element><string>Symfony\Component\Cache\Tests\Fixtures</string></element>
                             <element><string>Symfony\Component\Cache\Traits</string></element>
                         </array>
                     </element>
diff --git a/src/Symfony/Component/Config/Definition/ArrayNode.php b/src/Symfony/Component/Config/Definition/ArrayNode.php
index fa2faea7fe..5f51a5da41 100644
--- a/src/Symfony/Component/Config/Definition/ArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/ArrayNode.php
@@ -153,9 +153,7 @@ class ArrayNode extends BaseNode implements PrototypeNodeInterface
     }
 
     /**
-     * Sets the node Name.
-     *
-     * @param string $name The node's name
+     * {@inheritdoc}
      */
     public function setName($name)
     {
@@ -163,9 +161,7 @@ class ArrayNode extends BaseNode implements PrototypeNodeInterface
     }
 
     /**
-     * Checks if the node has a default value.
-     *
-     * @return bool
+     * {@inheritdoc}
      */
     public function hasDefaultValue()
     {
@@ -173,11 +169,7 @@ class ArrayNode extends BaseNode implements PrototypeNodeInterface
     }
 
     /**
-     * Retrieves the default value.
-     *
-     * @return array The default value
-     *
-     * @throws \RuntimeException if the node has no default value
+     * {@inheritdoc}
      */
     public function getDefaultValue()
     {
diff --git a/src/Symfony/Component/Config/Definition/BaseNode.php b/src/Symfony/Component/Config/Definition/BaseNode.php
index b0a32c1b35..d942b28cc7 100644
--- a/src/Symfony/Component/Config/Definition/BaseNode.php
+++ b/src/Symfony/Component/Config/Definition/BaseNode.php
@@ -41,7 +41,7 @@ abstract class BaseNode implements NodeInterface
      */
     public function __construct(?string $name, NodeInterface $parent = null, string $pathSeparator = self::DEFAULT_PATH_SEPARATOR)
     {
-        if (false !== strpos($name, $pathSeparator)) {
+        if (false !== strpos($name = (string) , $pathSeparator)) {
             throw new \InvalidArgumentException('The name must not contain "'.$pathSeparator.'".');
         }
 
@@ -185,9 +185,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Checks if this node is required.
-     *
-     * @return bool
+     * {@inheritdoc}
      */
     public function isRequired()
     {
@@ -218,9 +216,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Returns the name of this node.
-     *
-     * @return string The Node's name
+     * {@inheritdoc}
      */
     public function getName()
     {
@@ -228,9 +224,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Retrieves the path of this node.
-     *
-     * @return string The Node's path
+     * {@inheritdoc}
      */
     public function getPath()
     {
@@ -242,14 +236,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Merges two values together.
-     *
-     * @param mixed $leftSide
-     * @param mixed $rightSide
-     *
-     * @return mixed The merged value
-     *
-     * @throws ForbiddenOverwriteException
+     * {@inheritdoc}
      */
     final public function merge($leftSide, $rightSide)
     {
@@ -269,11 +256,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Normalizes a value, applying all normalization closures.
-     *
-     * @param mixed $value Value to normalize
-     *
-     * @return mixed The normalized value
+     * {@inheritdoc}
      */
     final public function normalize($value)
     {
@@ -321,14 +304,7 @@ abstract class BaseNode implements NodeInterface
     }
 
     /**
-     * Finalizes a value, applying all finalization closures.
-     *
-     * @param mixed $value The value to finalize
-     *
-     * @return mixed The finalized value
-     *
-     * @throws Exception
-     * @throws InvalidConfigurationException
+     * {@inheritdoc}
      */
     final public function finalize($value)
     {
diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index c39bd0ad11..febcc67c7c 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -48,7 +48,7 @@ class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinition
     }
 
     /**
-     * Sets a custom children builder.
+     * {@inheritdoc}
      */
     public function setBuilder(NodeBuilder $builder)
     {
@@ -56,9 +56,7 @@ class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinition
     }
 
     /**
-     * Returns a builder to add children nodes.
-     *
-     * @return NodeBuilder
+     * {@inheritdoc}
      */
     public function children()
     {
@@ -366,17 +364,7 @@ class ArrayNodeDefinition extends NodeDefinition implements ParentNodeDefinition
     }
 
     /**
-     * Appends a node definition.
-     *
-     *     $node = new ArrayNodeDefinition()
-     *         ->children()
-     *             ->scalarNode('foo')->end()
-     *             ->scalarNode('baz')->end()
-     *         ->end()
-     *         ->append($this->getBarNodeDefinition())
-     *     ;
-     *
-     * @return $this
+     * {@inheritdoc}
      */
     public function append(NodeDefinition $node)
     {
diff --git a/src/Symfony/Component/Config/Definition/Builder/BuilderAwareInterface.php b/src/Symfony/Component/Config/Definition/Builder/BuilderAwareInterface.php
index 8efbb58e21..f30b8736cf 100644
--- a/src/Symfony/Component/Config/Definition/Builder/BuilderAwareInterface.php
+++ b/src/Symfony/Component/Config/Definition/Builder/BuilderAwareInterface.php
@@ -18,5 +18,8 @@ namespace Symfony\Component\Config\Definition\Builder;
  */
 interface BuilderAwareInterface
 {
+    /**
+     * Sets a custom children builder.
+     */
     public function setBuilder(NodeBuilder $builder);
 }
diff --git a/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php b/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
index bf43861fc1..ea2e42c1c6 100644
--- a/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/NodeBuilder.php
@@ -143,8 +143,8 @@ class NodeBuilder implements NodeParentInterface
     /**
      * Creates a child node.
      *
-     * @param string $name The name of the node
-     * @param string $type The type of the node
+     * @param string|null $name The name of the node
+     * @param string      $type The type of the node
      *
      * @return NodeDefinition The child node
      *
diff --git a/src/Symfony/Component/Config/Definition/Builder/ParentNodeDefinitionInterface.php b/src/Symfony/Component/Config/Definition/Builder/ParentNodeDefinitionInterface.php
index c75de68cab..41c52c235e 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ParentNodeDefinitionInterface.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ParentNodeDefinitionInterface.php
@@ -21,9 +21,26 @@ namespace Symfony\Component\Config\Definition\Builder;
 interface ParentNodeDefinitionInterface extends BuilderAwareInterface
 {
     /**
+     * Returns a builder to add children nodes.
+     *
      * @return NodeBuilder
      */
     public function children();
 
+    /**
+     * Appends a node definition.
+     *
+     * Usage:
+     *
+     *     $node = $parentNode
+     *         ->children()
+     *             ->scalarNode('foo')->end()
+     *             ->scalarNode('baz')->end()
+     *             ->append($this->getBarNodeDefinition())
+     *         ->end()
+     *     ;
+     *
+     * @return $this
+     */
     public function append(NodeDefinition $node);
 }
diff --git a/src/Symfony/Component/Config/Definition/NodeInterface.php b/src/Symfony/Component/Config/Definition/NodeInterface.php
index b9bddc4938..45f1f681c1 100644
--- a/src/Symfony/Component/Config/Definition/NodeInterface.php
+++ b/src/Symfony/Component/Config/Definition/NodeInterface.php
@@ -11,6 +11,10 @@
 
 namespace Symfony\Component\Config\Definition;
 
+use Symfony\Component\Config\Definition\Exception\ForbiddenOverwriteException;
+use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
+use Symfony\Component\Config\Definition\Exception\InvalidTypeException;
+
 /**
  * Common Interface among all nodes.
  *
@@ -59,11 +63,13 @@ interface NodeInterface
     public function getDefaultValue();
 
     /**
-     * Normalizes the supplied value.
+     * Normalizes a value.
      *
      * @param mixed $value The value to normalize
      *
      * @return mixed The normalized value
+     *
+     * @throws InvalidTypeException if the value type is invalid
      */
     public function normalize($value);
 
@@ -73,7 +79,10 @@ interface NodeInterface
      * @param mixed $leftSide
      * @param mixed $rightSide
      *
-     * @return mixed The merged values
+     * @return mixed The merged value
+     *
+     * @throws ForbiddenOverwriteException if the configuration path cannot be overwritten
+     * @throws InvalidTypeException        if the value type is invalid
      */
     public function merge($leftSide, $rightSide);
 
@@ -83,6 +92,9 @@ interface NodeInterface
      * @param mixed $value The value to finalize
      *
      * @return mixed The finalized value
+     *
+     * @throws InvalidTypeException          if the value type is invalid
+     * @throws InvalidConfigurationException if the value is invalid configuration
      */
     public function finalize($value);
 }
diff --git a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
index c576198b54..d183a60525 100644
--- a/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
+++ b/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php
@@ -102,9 +102,7 @@ class PrototypedArrayNode extends ArrayNode
     }
 
     /**
-     * Checks if the node has a default value.
-     *
-     * @return bool
+     * {@inheritdoc}
      */
     public function hasDefaultValue()
     {
@@ -126,12 +124,10 @@ class PrototypedArrayNode extends ArrayNode
     }
 
     /**
-     * Retrieves the default value.
+     * {@inheritdoc}
      *
      * The default value could be either explicited or derived from the prototype
      * default value.
-     *
-     * @return array The default value
      */
     public function getDefaultValue()
     {
diff --git a/src/Symfony/Component/Config/Definition/VariableNode.php b/src/Symfony/Component/Config/Definition/VariableNode.php
index a9c35284cd..0cd84c72bf 100644
--- a/src/Symfony/Component/Config/Definition/VariableNode.php
+++ b/src/Symfony/Component/Config/Definition/VariableNode.php
@@ -27,9 +27,6 @@ class VariableNode extends BaseNode implements PrototypeNodeInterface
     protected $defaultValue;
     protected $allowEmptyValue = true;
 
-    /**
-     * {@inheritdoc}
-     */
     public function setDefaultValue($value)
     {
         $this->defaultValueSet = true;
diff --git a/src/Symfony/Component/Config/Tests/ConfigCacheFactoryTest.php b/src/Symfony/Component/Config/Tests/ConfigCacheFactoryTest.php
index c523e5cd5e..24e3224ce5 100644
--- a/src/Symfony/Component/Config/Tests/ConfigCacheFactoryTest.php
+++ b/src/Symfony/Component/Config/Tests/ConfigCacheFactoryTest.php
@@ -20,7 +20,7 @@ class ConfigCacheFactoryTest extends TestCase
      * @expectedException \InvalidArgumentException
      * @expectedExceptionMessage Invalid type for callback argument. Expected callable, but got "object".
      */
-    public function testCachWithInvalidCallback()
+    public function testCacheWithInvalidCallback()
     {
         $cacheFactory = new ConfigCacheFactory(true);
 
diff --git a/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php b/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
index 3929b6d9ed..5d3339a9e6 100644
--- a/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
+++ b/src/Symfony/Component/Console/Descriptor/DescriptorInterface.php
@@ -21,7 +21,7 @@ use Symfony\Component\Console\Output\OutputInterface;
 interface DescriptorInterface
 {
     /**
-     * Describes an InputArgument instance.
+     * Describes an object if supported.
      *
      * @param OutputInterface $output
      * @param object          $object
diff --git a/src/Symfony/Component/CssSelector/Parser/Tokenizer/TokenizerPatterns.php b/src/Symfony/Component/CssSelector/Parser/Tokenizer/TokenizerPatterns.php
index dffb079d75..5f16ac48f8 100644
--- a/src/Symfony/Component/CssSelector/Parser/Tokenizer/TokenizerPatterns.php
+++ b/src/Symfony/Component/CssSelector/Parser/Tokenizer/TokenizerPatterns.php
@@ -46,7 +46,7 @@ class TokenizerPatterns
         $this->nonAsciiPattern = '[^\x00-\x7F]';
         $this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
         $this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
-        $this->identifierPattern = '(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
+        $this->identifierPattern = '-?(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
         $this->hashPattern = '#((?:'.$this->nmCharPattern.')+)';
         $this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)';
         $this->quotedStringPattern = '([^\n\r\f%s]|'.$this->stringEscapePattern.')*';
diff --git a/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php b/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
index 37a3ef1d58..53b35a9547 100644
--- a/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
+++ b/src/Symfony/Component/CssSelector/Tests/Parser/ParserTest.php
@@ -186,6 +186,7 @@ class ParserTest extends TestCase
             array('foo:after', 'Element[foo]', 'after'),
             array('foo::selection', 'Element[foo]', 'selection'),
             array('lorem#ipsum ~ a#b.c[href]:empty::selection', 'CombinedSelector[Hash[Element[lorem]#ipsum] ~ Pseudo[Attribute[Class[Hash[Element[a]#b].c][href]]:empty]]', 'selection'),
+            array('video::-webkit-media-controls', 'Element[video]', '-webkit-media-controls'),
         );
     }
 
diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
index 00149b38e5..5dbdd69338 100644
--- a/src/Symfony/Component/Debug/ErrorHandler.php
+++ b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -547,14 +547,15 @@ class ErrorHandler
                 }
             }
         }
+        $exceptionHandler = $this->exceptionHandler;
+        $this->exceptionHandler = null;
         try {
-            if (null !== $this->exceptionHandler) {
-                return \call_user_func($this->exceptionHandler, $exception);
+            if (null !== $exceptionHandler) {
+                return \call_user_func($exceptionHandler, $exception);
             }
             $handlerException = $handlerException ?: $exception;
         } catch (\Throwable $handlerException) {
         }
-        $this->exceptionHandler = null;
         if ($exception === $handlerException) {
             self::$reservedMemory = null; // Disable the fatal error handler
             throw $exception; // Give back $exception to the native handler
diff --git a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
index 0d57204481..afe16ea4f7 100644
--- a/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
+++ b/src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
@@ -464,4 +464,17 @@ class ErrorHandlerTest extends TestCase
         $this->assertInstanceOf('Symfony\Component\Debug\Exception\ClassNotFoundException', $args[0]);
         $this->assertStringStartsWith("Attempted to load class \"Foo\" from the global namespace.\nDid you forget a \"use\" statement", $args[0]->getMessage());
     }
+
+    /**
+     * @expectedException \Exception
+     */
+    public function testCustomExceptionHandler()
+    {
+        $handler = new ErrorHandler();
+        $handler->setExceptionHandler(function ($e) use ($handler) {
+            $handler->handleException($e);
+        });
+
+        $handler->handleException(new \Exception());
+    }
 }
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index 1e1c4a7848..7b4d5170c1 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -648,7 +648,7 @@ class Crawler implements \Countable, \IteratorAggregate
                 }
             }
 
-            $data[] = $count > 1 ? $elements : $elements[0];
+            $data[] = 1 === $count ? $elements[0] : $elements;
         }
 
         return $data;
diff --git a/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php b/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
index 6d321e0282..4d3aebfba5 100644
--- a/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
+++ b/src/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
@@ -97,14 +97,14 @@ class ChoiceFormField extends FormField
     }
 
     /**
-     * Ticks a checkbox.
+     * Unticks a checkbox.
      *
      * @throws \LogicException When the type provided is not correct
      */
     public function untick()
     {
         if ('checkbox' !== $this->type) {
-            throw new \LogicException(sprintf('You cannot tick "%s" as it is not a checkbox (%s).', $this->name, $this->type));
+            throw new \LogicException(sprintf('You cannot untick "%s" as it is not a checkbox (%s).', $this->name, $this->type));
         }
 
         $this->setValue(false);
@@ -113,7 +113,7 @@ class ChoiceFormField extends FormField
     /**
      * Sets the value of the field.
      *
-     * @param string $value The value of the field
+     * @param string|array $value The value of the field
      *
      * @throws \InvalidArgumentException When value type provided is not correct
      */
diff --git a/src/Symfony/Component/DomCrawler/Field/InputFormField.php b/src/Symfony/Component/DomCrawler/Field/InputFormField.php
index 090913efa3..1c3c84d721 100644
--- a/src/Symfony/Component/DomCrawler/Field/InputFormField.php
+++ b/src/Symfony/Component/DomCrawler/Field/InputFormField.php
@@ -32,11 +32,12 @@ class InputFormField extends FormField
             throw new \LogicException(sprintf('An InputFormField can only be created from an input or button tag (%s given).', $this->node->nodeName));
         }
 
-        if ('checkbox' === strtolower($this->node->getAttribute('type'))) {
+        $type = strtolower($this->node->getAttribute('type'));
+        if ('checkbox' === $type) {
             throw new \LogicException('Checkboxes should be instances of ChoiceFormField.');
         }
 
-        if ('file' === strtolower($this->node->getAttribute('type'))) {
+        if ('file' === $type) {
             throw new \LogicException('File inputs should be instances of FileFormField.');
         }
 
diff --git a/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php b/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
index ec8512e4ef..a8dc525e55 100644
--- a/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
+++ b/src/Symfony/Component/DomCrawler/Tests/CrawlerTest.php
@@ -413,6 +413,7 @@ EOF
 
         $this->assertEquals(array('One', 'Two', 'Three'), $crawler->extract('_text'), '->extract() returns an array of extracted data from the node list');
         $this->assertEquals(array(array('One', 'first'), array('Two', ''), array('Three', '')), $crawler->extract(array('_text', 'class')), '->extract() returns an array of extracted data from the node list');
+        $this->assertEquals(array(array(), array(), array()), $crawler->extract(array()), '->extract() returns empty arrays if the attribute list is empty');
 
         $this->assertEquals(array(), $this->createTestCrawler()->filterXPath('//ol')->extract('_text'), '->extract() returns an empty array if the node list is empty');
     }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
index 9a8c7d427b..1beb6ab806 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FormType.php
@@ -80,6 +80,7 @@ class FormType extends BaseType
             }
         }
 
+        $formConfig = $form->getConfig();
         $view->vars = array_replace($view->vars, array(
             'errors' => $form->getErrors(),
             'valid' => $form->isSubmitted() ? $form->isValid() : true,
@@ -88,9 +89,9 @@ class FormType extends BaseType
             'required' => $form->isRequired(),
             'size' => null,
             'label_attr' => $options['label_attr'],
-            'compound' => $form->getConfig()->getCompound(),
-            'method' => $form->getConfig()->getMethod(),
-            'action' => $form->getConfig()->getAction(),
+            'compound' => $formConfig->getCompound(),
+            'method' => $formConfig->getMethod(),
+            'action' => $formConfig->getAction(),
             'submitted' => $form->isSubmitted(),
         ));
     }
diff --git a/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php b/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
index 410eedc2ae..bd116d2a71 100644
--- a/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
+++ b/src/Symfony/Component/Form/Extension/Validator/EventListener/ValidationListener.php
@@ -52,9 +52,7 @@ class ValidationListener implements EventSubscriberInterface
 
         if ($form->isRoot()) {
             // Validate the form in group "Default"
-            $violations = $this->validator->validate($form);
-
-            foreach ($violations as $violation) {
+            foreach ($this->validator->validate($form) as $violation) {
                 // Allow the "invalid" constraint to be put onto
                 // non-synchronized forms
                 // ConstraintViolation::getConstraint() must not expect to provide a constraint as long as Symfony\Component\Validator\ExecutionContext exists (before 3.0)
diff --git a/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php b/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
index bde7458258..207015b2ce 100644
--- a/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
+++ b/src/Symfony/Component/Form/Extension/Validator/ValidatorTypeGuesser.php
@@ -253,12 +253,8 @@ class ValidatorTypeGuesser implements FormTypeGuesserInterface
         $classMetadata = $this->metadataFactory->getMetadataFor($class);
 
         if ($classMetadata instanceof ClassMetadataInterface && $classMetadata->hasPropertyMetadata($property)) {
-            $memberMetadatas = $classMetadata->getPropertyMetadata($property);
-
-            foreach ($memberMetadatas as $memberMetadata) {
-                $constraints = $memberMetadata->getConstraints();
-
-                foreach ($constraints as $constraint) {
+            foreach ($classMetadata->getPropertyMetadata($property) as $memberMetadata) {
+                foreach ($memberMetadata->getConstraints() as $constraint) {
                     if ($guess = $closure($constraint)) {
                         $guesses[] = $guess;
                     }
diff --git a/src/Symfony/Component/Form/Tests/AbstractBootstrap4LayoutTest.php b/src/Symfony/Component/Form/Tests/AbstractBootstrap4LayoutTest.php
index 6e448c413a..beabaa21cd 100644
--- a/src/Symfony/Component/Form/Tests/AbstractBootstrap4LayoutTest.php
+++ b/src/Symfony/Component/Form/Tests/AbstractBootstrap4LayoutTest.php
@@ -166,10 +166,10 @@ abstract class AbstractBootstrap4LayoutTest extends AbstractBootstrap3LayoutTest
         ./span[@class="mb-0 d-block"]
             [./span[.="[trans]Error[/trans]"]]
             [./span[.="[trans]Error 1[/trans]"]]
-          
+
         /following-sibling::span[@class="mb-0 d-block"]
             [./span[.="[trans]Error[/trans]"]]
-            [./span[.="[trans]Error 2[/trans]"]]    
+            [./span[.="[trans]Error 2[/trans]"]]
     ]
     [count(./span)=2]
 '
diff --git a/src/Symfony/Component/Intl/Intl.php b/src/Symfony/Component/Intl/Intl.php
index 3444c10f83..e552b994fd 100644
--- a/src/Symfony/Component/Intl/Intl.php
+++ b/src/Symfony/Component/Intl/Intl.php
@@ -15,6 +15,7 @@ use Symfony\Component\Intl\Data\Bundle\Reader\JsonBundleReader;
 use Symfony\Component\Intl\Data\Bundle\Reader\BufferedBundleReader;
 use Symfony\Component\Intl\Data\Bundle\Reader\BundleEntryReader;
 use Symfony\Component\Intl\Data\Bundle\Reader\BundleEntryReaderInterface;
+use Symfony\Component\Intl\Data\Provider\LocaleDataProvider;
 use Symfony\Component\Intl\Data\Provider\ScriptDataProvider;
 use Symfony\Component\Intl\ResourceBundle\CurrencyBundle;
 use Symfony\Component\Intl\ResourceBundle\CurrencyBundleInterface;
@@ -259,6 +260,11 @@ final class Intl
                 new JsonBundleReader(),
                 self::BUFFER_SIZE
             ));
+            $localeDataProvider = new LocaleDataProvider(
+                self::getDataDirectory().'/'.self::LOCALE_DIR,
+                self::$entryReader
+            );
+            self::$entryReader->setLocaleAliases($localeDataProvider->getAliases());
         }
 
         return self::$entryReader;
diff --git a/src/Symfony/Component/Intl/Tests/IntlTest.php b/src/Symfony/Component/Intl/Tests/IntlTest.php
new file mode 100644
index 0000000000..d77655b77d
--- /dev/null
+++ b/src/Symfony/Component/Intl/Tests/IntlTest.php
@@ -0,0 +1,84 @@
+<?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\Intl\Tests;
+
+use Symfony\Component\Intl\Intl;
+use PHPUnit\Framework\TestCase;
+
+class IntlTest extends TestCase
+{
+    /**
+     * @requires extension intl
+     */
+    public function testIsExtensionLoadedChecksIfIntlExtensionIsLoaded()
+    {
+        $this->assertTrue(Intl::isExtensionLoaded());
+    }
+
+    public function testGetCurrencyBundleCreatesTheCurrencyBundle()
+    {
+        $this->assertInstanceOf('Symfony\Component\Intl\ResourceBundle\CurrencyBundleInterface', Intl::getCurrencyBundle());
+    }
+
+    public function testGetLanguageBundleCreatesTheLanguageBundle()
+    {
+        $this->assertInstanceOf('Symfony\Component\Intl\ResourceBundle\LanguageBundleInterface', Intl::getLanguageBundle());
+    }
+
+    public function testGetLocaleBundleCreatesTheLocaleBundle()
+    {
+        $this->assertInstanceOf('Symfony\Component\Intl\ResourceBundle\LocaleBundleInterface', Intl::getLocaleBundle());
+    }
+
+    public function testGetRegionBundleCreatesTheRegionBundle()
+    {
+        $this->assertInstanceOf('Symfony\Component\Intl\ResourceBundle\LocaleBundleInterface', Intl::getLocaleBundle());
+    }
+
+    public function testGetIcuVersionReadsTheVersionOfInstalledIcuLibrary()
+    {
+        $this->assertStringMatchesFormat('%d.%d', Intl::getIcuVersion());
+    }
+
+    public function testGetIcuDataVersionReadsTheVersionOfInstalledIcuData()
+    {
+        $this->assertStringMatchesFormat('%d.%d', Intl::getIcuDataVersion());
+    }
+
+    public function testGetIcuStubVersionReadsTheVersionOfBundledStubs()
+    {
+        $this->assertStringMatchesFormat('%d.%d', Intl::getIcuStubVersion());
+    }
+
+    public function testGetDataDirectoryReturnsThePathToIcuData()
+    {
+        $this->assertTrue(is_dir(Intl::getDataDirectory()));
+    }
+
+    /**
+     * @requires extension intl
+     */
+    public function testLocaleAliasesAreLoaded()
+    {
+        \Locale::setDefault('zh_TW');
+        $countryNameZhTw = Intl::getRegionBundle()->getCountryName('AD');
+
+        \Locale::setDefault('zh_Hant_TW');
+        $countryNameHantZhTw = Intl::getRegionBundle()->getCountryName('AD');
+
+        \Locale::setDefault('zh');
+        $countryNameZh = Intl::getRegionBundle()->getCountryName('AD');
+
+        $this->assertSame($countryNameZhTw, $countryNameHantZhTw, 'zh_TW is an alias to zh_Hant_TW');
+        $this->assertNotSame($countryNameZh, $countryNameZhTw, 'zh_TW does not fall back to zh');
+    }
+}
diff --git a/src/Symfony/Component/Process/PhpExecutableFinder.php b/src/Symfony/Component/Process/PhpExecutableFinder.php
index ef79065ff7..1916274faf 100644
--- a/src/Symfony/Component/Process/PhpExecutableFinder.php
+++ b/src/Symfony/Component/Process/PhpExecutableFinder.php
@@ -47,7 +47,7 @@ class PhpExecutableFinder
         $args = $includeArgs && $args ? ' '.implode(' ', $args) : '';
 
         // PHP_BINARY return the current sapi executable
-        if (PHP_BINARY && in_array(PHP_SAPI, array('cli', 'cli-server', 'phpdbg')) && is_file(PHP_BINARY)) {
+        if (PHP_BINARY && in_array(PHP_SAPI, array('cli', 'cli-server', 'phpdbg'))) {
             return PHP_BINARY.$args;
         }
 
diff --git a/src/Symfony/Component/Security/Core/Authentication/Provider/SimpleAuthenticationProvider.php b/src/Symfony/Component/Security/Core/Authentication/Provider/SimpleAuthenticationProvider.php
index d3f5ad6291..0c16c96aeb 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Provider/SimpleAuthenticationProvider.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Provider/SimpleAuthenticationProvider.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Security\Core\Authentication\Provider;
 
+use Symfony\Component\Security\Core\User\UserChecker;
+use Symfony\Component\Security\Core\User\UserCheckerInterface;
 use Symfony\Component\Security\Core\User\UserProviderInterface;
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
 use Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface;
@@ -24,23 +26,29 @@ class SimpleAuthenticationProvider implements AuthenticationProviderInterface
     private $simpleAuthenticator;
     private $userProvider;
     private $providerKey;
+    private $userChecker;
 
-    public function __construct(SimpleAuthenticatorInterface $simpleAuthenticator, UserProviderInterface $userProvider, string $providerKey)
+    public function __construct(SimpleAuthenticatorInterface $simpleAuthenticator, UserProviderInterface $userProvider, string $providerKey, UserCheckerInterface $userChecker = null)
     {
         $this->simpleAuthenticator = $simpleAuthenticator;
         $this->userProvider = $userProvider;
         $this->providerKey = $providerKey;
+        $this->userChecker = $userChecker ?: new UserChecker();
     }
 
     public function authenticate(TokenInterface $token)
     {
         $authToken = $this->simpleAuthenticator->authenticateToken($token, $this->userProvider, $this->providerKey);
 
-        if ($authToken instanceof TokenInterface) {
-            return $authToken;
+        if (!$authToken instanceof TokenInterface) {
+            throw new AuthenticationException('Simple authenticator failed to return an authenticated token.');
         }
 
-        throw new AuthenticationException('Simple authenticator failed to return an authenticated token.');
+        $user = $authToken->getUser();
+        $this->userChecker->checkPreAuth($user);
+        $this->userChecker->checkPostAuth($user);
+
+        return $authToken;
     }
 
     public function supports(TokenInterface $token)
diff --git a/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php
new file mode 100644
index 0000000000..1e7069c1fa
--- /dev/null
+++ b/src/Symfony/Component/Security/Core/Tests/Authentication/Provider/SimpleAuthenticationProviderTest.php
@@ -0,0 +1,89 @@
+<?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\Security\Core\Tests\Authentication\Provider;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Security\Core\Exception\DisabledException;
+use Symfony\Component\Security\Core\Authentication\Provider\SimpleAuthenticationProvider;
+use Symfony\Component\Security\Core\Exception\LockedException;
+
+class SimpleAuthenticationProviderTest extends TestCase
+{
+    /**
+     * @expectedException \Symfony\Component\Security\Core\Exception\DisabledException
+     */
+    public function testAuthenticateWhenPreChecksFails()
+    {
+        $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
+
+        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
+        $token->expects($this->any())
+            ->method('getUser')
+            ->will($this->returnValue($user));
+
+        $userChecker = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserCheckerInterface')->getMock();
+        $userChecker->expects($this->once())
+            ->method('checkPreAuth')
+            ->will($this->throwException(new DisabledException()));
+
+        $authenticator = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface')->getMock();
+        $authenticator->expects($this->once())
+            ->method('authenticateToken')
+            ->will($this->returnValue($token));
+
+        $provider = $this->getProvider($authenticator, null, $userChecker);
+
+        $provider->authenticate($token);
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Security\Core\Exception\LockedException
+     */
+    public function testAuthenticateWhenPostChecksFails()
+    {
+        $user = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserInterface')->getMock();
+
+        $token = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\Token\TokenInterface')->getMock();
+        $token->expects($this->any())
+            ->method('getUser')
+            ->will($this->returnValue($user));
+
+        $userChecker = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserCheckerInterface')->getMock();
+        $userChecker->expects($this->once())
+            ->method('checkPostAuth')
+            ->will($this->throwException(new LockedException()));
+
+        $authenticator = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface')->getMock();
+        $authenticator->expects($this->once())
+            ->method('authenticateToken')
+            ->will($this->returnValue($token));
+
+        $provider = $this->getProvider($authenticator, null, $userChecker);
+
+        $provider->authenticate($token);
+    }
+
+    protected function getProvider($simpleAuthenticator = null, $userProvider = null, $userChecker = null, $key = 'test')
+    {
+        if (null === $userChecker) {
+            $userChecker = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserCheckerInterface')->getMock();
+        }
+        if (null === $simpleAuthenticator) {
+            $simpleAuthenticator = $this->getMockBuilder('Symfony\Component\Security\Core\Authentication\SimpleAuthenticatorInterface')->getMock();
+        }
+        if (null === $userProvider) {
+            $userProvider = $this->getMockBuilder('Symfony\Component\Security\Core\User\UserProviderInterface')->getMock();
+        }
+
+        return new SimpleAuthenticationProvider($simpleAuthenticator, $userProvider, $key, $userChecker);
+    }
+}
diff --git a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
index caba1fcb20..dd0dd1fa46 100644
--- a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
+++ b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
@@ -47,7 +47,7 @@ class ClassMetadata extends GenericMetadata implements ClassMetadataInterface
     public $defaultGroup;
 
     /**
-     * @var MemberMetadata[]
+     * @var MemberMetadata[][]
      *
      * @internal This property is public in order to reduce the size of the
      *           class' serialized representation. Do not access it. Use