Merge branch '3.3' into 3.4

* 3.3:
  fix merge
  fix merge
  fix merge
  Fix 7.2 compat layer
  Fix PHP 7.2 support
  [HttpFoundation] Add missing session.lazy_write config option
  [HttpFoundation] Combine Cache-Control headers
  [Form] fix parsing invalid floating point numbers
  Escape command usage when displaying it in the text descriptor
  Use for=ID on radio/checkbox label.

.travis.yml

@@ -25,9 +25,10 @@ matrix:
           group: edge
         - php: 5.5
         - php: 5.6
+        - php: 7.0
         - php: 7.1
           env: deps=high
-        - php: 7.0
+        - php: 7.2
           env: deps=low
     fast_finish: true
 

src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig

@@ -50,10 +50,14 @@
 {% endblock %}
 
 {% block checkbox_label -%}
+    {%- set label_attr = label_attr|merge({'for': id}) -%}
+
     {{- block('checkbox_radio_label') -}}
 {%- endblock checkbox_label %}
 
 {% block radio_label -%}
+    {%- set label_attr = label_attr|merge({'for': id}) -%}
+
     {{- block('checkbox_radio_label') -}}
 {%- endblock radio_label %}
 

src/Symfony/Bridge/Twig/Tests/AppVariableTest.php

@@ -45,6 +45,9 @@ class AppVariableTest extends TestCase
         $this->assertEquals('dev', $this->appVariable->getEnvironment());
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testGetSession()
     {
         $session = $this->getMockBuilder(Session::class)->disableOriginalConstructor()->getMock();
@@ -166,6 +169,9 @@ class AppVariableTest extends TestCase
         $this->assertEquals(array(), $this->appVariable->getFlashes());
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testGetFlashesWithNoSessionStarted()
     {
         $session = $this->getMockBuilder(Session::class)->disableOriginalConstructor()->getMock();
@@ -177,6 +183,9 @@ class AppVariableTest extends TestCase
         $this->assertEquals(array(), $this->appVariable->getFlashes());
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testGetFlashes()
     {
         $flashMessages = $this->setFlashMessages();

src/Symfony/Bridge/Twig/composer.json

@@ -24,6 +24,7 @@
         "symfony/asset": "~2.8|~3.0|~4.0",
         "symfony/finder": "~2.8|~3.0|~4.0",
         "symfony/form": "~3.4|~4.0",
+        "symfony/http-foundation": "^3.3.11|~4.0",
         "symfony/http-kernel": "~3.2|~4.0",
         "symfony/polyfill-intl-icu": "~1.0",
         "symfony/routing": "~2.8|~3.0|~4.0",

src/Symfony/Bundle/FrameworkBundle/Tests/Command/CacheClearCommand/CacheClearCommandTest.php

@@ -55,7 +55,7 @@ class CacheClearCommandTest extends TestCase
         $finder = new Finder();
         $metaFiles = $finder->files()->in($this->kernel->getCacheDir())->name('*.php.meta');
         // simply check that cache is warmed up
-        $this->assertGreaterThanOrEqual(1, count($metaFiles));
+        $this->assertNotEmpty($metaFiles);
         $configCacheFactory = new ConfigCacheFactory(true);
 
         foreach ($metaFiles as $file) {

src/Symfony/Bundle/FrameworkBundle/Tests/Controller/ControllerTraitTest.php

@@ -373,6 +373,9 @@ abstract class ControllerTraitTest extends TestCase
         $this->assertSame(302, $response->getStatusCode());
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testAddFlash()
     {
         $flashBag = new FlashBag();

src/Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Validation/Article.php

@@ -2,7 +2,9 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Tests\Fixtures\Validation;
 
-class Article implements NotExistingInterface
-{
-    public $category;
+if (!function_exists('__phpunit_run_isolated_test')) {
+    class Article implements NotExistingInterface
+    {
+        public $category;
+    }
 }

src/Symfony/Bundle/FrameworkBundle/composer.json

@@ -23,7 +23,7 @@
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/config": "~3.4|~4.0",
         "symfony/event-dispatcher": "^3.3.1|~4.0",
-        "symfony/http-foundation": "~3.3|~4.0",
+        "symfony/http-foundation": "^3.3.11|~4.0",
         "symfony/http-kernel": "~3.4|~4.0",
         "symfony/polyfill-mbstring": "~1.0",
         "symfony/filesystem": "~2.8|~3.0|~4.0",

src/Symfony/Component/Config/Tests/Fixtures/BadParent.php

@@ -2,6 +2,8 @@
 
 namespace Symfony\Component\Config\Tests\Fixtures;
 
-class BadParent extends MissingParent
-{
+if (!function_exists('__phpunit_run_isolated_test')) {
+    class BadParent extends MissingParent
+    {
+    }
 }

src/Symfony/Component/Console/Descriptor/TextDescriptor.php

@@ -143,7 +143,7 @@ class TextDescriptor extends Descriptor
         $this->writeText('<comment>Usage:</comment>', $options);
         foreach (array_merge(array($command->getSynopsis(true)), $command->getAliases(), $command->getUsages()) as $usage) {
             $this->writeText("\n");
-            $this->writeText('  '.$usage, $options);
+            $this->writeText('  '.OutputFormatter::escape($usage), $options);
         }
         $this->writeText("\n");
 

src/Symfony/Component/Console/Tests/Fixtures/command_2.txt

@@ -1,7 +1,7 @@
 <comment>Usage:</comment>
-  descriptor:command2 [options] [--] <argument_name>
-  descriptor:command2 -o|--option_name <argument_name>
-  descriptor:command2 <argument_name>
+  descriptor:command2 [options] [--] \<argument_name>
+  descriptor:command2 -o|--option_name \<argument_name>
+  descriptor:command2 \<argument_name>
 
 <comment>Arguments:</comment>
   <info>argument_name</info>      

src/Symfony/Component/Console/Tests/Fixtures/command_mbstring.txt

@@ -1,7 +1,7 @@
 <comment>Usage:</comment>
-  descriptor:åèä [options] [--] <argument_åèä>
-  descriptor:åèä -o|--option_name <argument_name>
-  descriptor:åèä <argument_name>
+  descriptor:åèä [options] [--] \<argument_åèä>
+  descriptor:åèä -o|--option_name \<argument_name>
+  descriptor:åèä \<argument_name>
 
 <comment>Arguments:</comment>
   <info>argument_åèä</info>   

src/Symfony/Component/Debug/Tests/Fixtures/Throwing.php

@@ -1,3 +1,5 @@
 <?php
 
-throw new \Exception('boo');
+if (!function_exists('__phpunit_run_isolated_test')) {
+    throw new \Exception('boo');
+}

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

@@ -13,6 +13,8 @@ namespace Symfony\Component\DependencyInjection\Tests\Compiler;
 
 use Symfony\Bug\NotExistClass;
 
-class OptionalServiceClass extends NotExistClass
-{
+if (!function_exists('__phpunit_run_isolated_test')) {
+    class OptionalServiceClass extends NotExistClass
+    {
+    }
 }

src/Symfony/Component/DependencyInjection/Tests/Loader/XmlFileLoaderTest.php

@@ -458,6 +458,9 @@ class XmlFileLoaderTest extends TestCase
         if (extension_loaded('suhosin') && false === strpos(ini_get('suhosin.executor.include.whitelist'), 'phar')) {
             $this->markTestSkipped('To run this test, add "phar" to the "suhosin.executor.include.whitelist" settings in your php.ini file.');
         }
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM makes this test conflict with those run in separate processes.');
+        }
 
         require_once self::$fixturesPath.'/includes/ProjectWithXsdExtensionInPhar.phar';
 

src/Symfony/Component/Form/Extension/Core/DataTransformer/PercentToLocalizedStringTransformer.php

@@ -116,6 +116,7 @@ class PercentToLocalizedStringTransformer implements DataTransformerInterface
             return;
         }
 
+        $position = 0;
         $formatter = $this->getNumberFormatter();
         $groupSep = $formatter->getSymbol(\NumberFormatter::GROUPING_SEPARATOR_SYMBOL);
         $decSep = $formatter->getSymbol(\NumberFormatter::DECIMAL_SEPARATOR_SYMBOL);
@@ -129,18 +130,44 @@ class PercentToLocalizedStringTransformer implements DataTransformerInterface
             $value = str_replace(',', $decSep, $value);
         }
 
+        if (false !== strpos($value, $decSep)) {
+            $type = \NumberFormatter::TYPE_DOUBLE;
+        } else {
+            $type = \PHP_INT_SIZE === 8 ? \NumberFormatter::TYPE_INT64 : \NumberFormatter::TYPE_INT32;
+        }
+
         // replace normal spaces so that the formatter can read them
-        $value = $formatter->parse(str_replace(' ', "\xc2\xa0", $value));
+        $result = $formatter->parse(str_replace(' ', "\xc2\xa0", $value), $type, $position);
 
         if (intl_is_failure($formatter->getErrorCode())) {
             throw new TransformationFailedException($formatter->getErrorMessage());
         }
 
         if (self::FRACTIONAL == $this->type) {
-            $value /= 100;
+            $result /= 100;
         }
 
-        return $value;
+        if (\function_exists('mb_detect_encoding') && false !== $encoding = mb_detect_encoding($value, null, true)) {
+            $length = mb_strlen($value, $encoding);
+            $remainder = mb_substr($value, $position, $length, $encoding);
+        } else {
+            $length = \strlen($value);
+            $remainder = substr($value, $position, $length);
+        }
+
+        // After parsing, position holds the index of the character where the
+        // parsing stopped
+        if ($position < $length) {
+            // Check if there are unrecognized characters at the end of the
+            // number (excluding whitespace characters)
+            $remainder = trim($remainder, " \t\n\r\0\x0b\xc2\xa0");
+
+            if ('' !== $remainder) {
+                throw new TransformationFailedException(sprintf('The number contains unrecognized characters: "%s"', $remainder));
+            }
+        }
+
+        return $result;
     }
 
     /**

src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/PercentToLocalizedStringTransformerTest.php

@@ -141,10 +141,10 @@ class PercentToLocalizedStringTransformerTest extends TestCase
      */
     public function testDecimalSeparatorMayNotBeDotIfGroupingSeparatorIsDot()
     {
-        // Since we test against "de_AT", we need the full implementation
+        // Since we test against "de_DE", we need the full implementation
         IntlTestHelper::requireFullIntl($this, '4.8.1.1');
 
-        \Locale::setDefault('de_AT');
+        \Locale::setDefault('de_DE');
 
         $transformer = new PercentToLocalizedStringTransformer(1, 'integer');
 
@@ -236,4 +236,70 @@ class PercentToLocalizedStringTransformerTest extends TestCase
         $this->assertEquals(1234.5, $transformer->reverseTransform('1234,5'));
         $this->assertEquals(1234.5, $transformer->reverseTransform('1234.5'));
     }
+
+    /**
+     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
+     */
+    public function testReverseTransformDisallowsLeadingExtraCharacters()
+    {
+        $transformer = new PercentToLocalizedStringTransformer();
+
+        $transformer->reverseTransform('foo123');
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
+     * @expectedExceptionMessage The number contains unrecognized characters: "foo3"
+     */
+    public function testReverseTransformDisallowsCenteredExtraCharacters()
+    {
+        $transformer = new PercentToLocalizedStringTransformer();
+
+        $transformer->reverseTransform('12foo3');
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
+     * @expectedExceptionMessage The number contains unrecognized characters: "foo8"
+     * @requires extension mbstring
+     */
+    public function testReverseTransformDisallowsCenteredExtraCharactersMultibyte()
+    {
+        // Since we test against other locales, we need the full implementation
+        IntlTestHelper::requireFullIntl($this, false);
+
+        \Locale::setDefault('ru');
+
+        $transformer = new PercentToLocalizedStringTransformer();
+
+        $transformer->reverseTransform("12\xc2\xa0345,67foo8");
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
+     * @expectedExceptionMessage The number contains unrecognized characters: "foo"
+     */
+    public function testReverseTransformDisallowsTrailingExtraCharacters()
+    {
+        $transformer = new PercentToLocalizedStringTransformer();
+
+        $transformer->reverseTransform('123foo');
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
+     * @expectedExceptionMessage The number contains unrecognized characters: "foo"
+     * @requires extension mbstring
+     */
+    public function testReverseTransformDisallowsTrailingExtraCharactersMultibyte()
+    {
+        // Since we test against other locales, we need the full implementation
+        IntlTestHelper::requireFullIntl($this, false);
+
+        \Locale::setDefault('ru');
+
+        $transformer = new PercentToLocalizedStringTransformer();
+
+        $transformer->reverseTransform("12\xc2\xa0345,678foo");
+    }
 }

src/Symfony/Component/HttpFoundation/HeaderBag.php

@@ -147,7 +147,7 @@ class HeaderBag implements \IteratorAggregate, \Countable
         }
 
         if ('cache-control' === $key) {
-            $this->cacheControl = $this->parseCacheControl($values[0]);
+            $this->cacheControl = $this->parseCacheControl(implode(', ', $this->headers[$key]));
         }
     }
 

src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php

@@ -73,6 +73,7 @@ class NativeSessionStorage implements SessionStorageInterface
      * gc_probability, "1"
      * hash_bits_per_character, "4"
      * hash_function, "0"
+     * lazy_write, "1"
      * name, "PHPSESSID"
      * referer_check, ""
      * serialize_handler, "php"
@@ -98,8 +99,11 @@ class NativeSessionStorage implements SessionStorageInterface
      */
     public function __construct(array $options = array(), $handler = null, MetadataBag $metaBag = null)
     {
-        session_cache_limiter(''); // disable by default because it's managed by HeaderBag (if used)
-        ini_set('session.use_cookies', 1);
+        $options += array(
+            // disable by default because it's managed by HeaderBag (if used)
+            'cache_limiter' => '',
+            'use_cookies' => 1,
+        );
 
         session_register_shutdown();
 
@@ -187,6 +191,10 @@ class NativeSessionStorage implements SessionStorageInterface
             return false;
         }
 
+        if (headers_sent()) {
+            return false;
+        }
+
         if (null !== $lifetime) {
             ini_set('session.cookie_lifetime', $lifetime);
         }
@@ -324,12 +332,16 @@ class NativeSessionStorage implements SessionStorageInterface
      */
     public function setOptions(array $options)
     {
+        if (headers_sent()) {
+            return;
+        }
+
         $validOptions = array_flip(array(
             'cache_limiter', 'cookie_domain', 'cookie_httponly',
             'cookie_lifetime', 'cookie_path', 'cookie_secure',
             'entropy_file', 'entropy_length', 'gc_divisor',
             'gc_maxlifetime', 'gc_probability', 'hash_bits_per_character',
-            'hash_function', 'name', 'referer_check',
+            'hash_function', 'lazy_write', 'name', 'referer_check',
             'serialize_handler', 'use_strict_mode', 'use_cookies',
             'use_only_cookies', 'use_trans_sid', 'upload_progress.enabled',
             'upload_progress.cleanup', 'upload_progress.prefix', 'upload_progress.name',
@@ -381,6 +393,10 @@ class NativeSessionStorage implements SessionStorageInterface
             );
         }
 
+        if (headers_sent($file, $line)) {
+            throw new \RuntimeException(sprintf('Failed to set the session handler because headers have already been sent by "%s" at line %d.', $file, $line));
+        }
+
         // Wrap $saveHandler in proxy and prevent double wrapping of proxy
         if (!$saveHandler instanceof AbstractProxy && $saveHandler instanceof \SessionHandlerInterface) {
             $saveHandler = new SessionHandlerProxy($saveHandler);

src/Symfony/Component/HttpFoundation/Tests/ResponseHeaderBagTest.php

@@ -86,6 +86,17 @@ class ResponseHeaderBagTest extends TestCase
         $bag = new ResponseHeaderBag();
         $bag->set('Last-Modified', 'abcde');
         $this->assertEquals('private, must-revalidate', $bag->get('Cache-Control'));
+
+        $bag = new ResponseHeaderBag();
+        $bag->set('Cache-Control', array('public', 'must-revalidate'));
+        $this->assertCount(1, $bag->get('Cache-Control', null, false));
+        $this->assertEquals('must-revalidate, public', $bag->get('Cache-Control'));
+
+        $bag = new ResponseHeaderBag();
+        $bag->set('Cache-Control', 'public');
+        $bag->set('Cache-Control', 'must-revalidate', false);
+        $this->assertCount(1, $bag->get('Cache-Control', null, false));
+        $this->assertEquals('must-revalidate, public', $bag->get('Cache-Control'));
     }
 
     public function testCacheControlClone()

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

@@ -269,6 +269,9 @@ class PdoSessionHandlerTest extends TestCase
         $this->assertSame('', $data, 'Destroyed session returns empty string');
     }
 
+    /**
+     * @runInSeparateProcess
+     */
     public function testSessionGC()
     {
         $previousLifeTime = ini_set('session.gc_maxlifetime', 1000);

src/Symfony/Component/HttpKernel/Tests/EventListener/LocaleListenerTest.php

@@ -38,8 +38,7 @@ class LocaleListenerTest extends TestCase
     public function testLocaleFromRequestAttribute()
     {
         $request = Request::create('/');
-        session_name('foo');
-        $request->cookies->set('foo', 'value');
+        $request->cookies->set(session_name(), 'value');
 
         $request->attributes->set('_locale', 'es');
         $listener = new LocaleListener($this->requestStack, 'fr');

src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php

@@ -65,8 +65,7 @@ class TestSessionListenerTest extends TestCase
     {
         $this->sessionHasBeenStarted();
 
-        $params = session_get_cookie_params();
-        session_set_cookie_params(0, $params['path'], $params['domain'], $params['secure'], $params['httponly']);
+        @ini_set('session.cookie_lifetime', 0);
 
         $response = $this->filterResponse(new Request(), HttpKernelInterface::MASTER_REQUEST);
         $cookies = $response->headers->getCookies();

src/Symfony/Component/HttpKernel/composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": "^5.5.9|>=7.0.8",
         "symfony/event-dispatcher": "~2.8|~3.0|~4.0",
-        "symfony/http-foundation": "~3.3|~4.0",
+        "symfony/http-foundation": "^3.3.11|~4.0",
         "symfony/debug": "~2.8|~3.0|~4.0",
         "psr/log": "~1.0"
     },

src/Symfony/Component/Routing/Tests/Fixtures/validresource.php

@@ -1,5 +1,8 @@
 <?php
 
+if (function_exists('__phpunit_run_isolated_test')) {
+    return;
+}
 /** @var $loader \Symfony\Component\Routing\Loader\PhpFileLoader */
 /** @var \Symfony\Component\Routing\RouteCollection $collection */
 $collection = $loader->import('validpattern.php');

src/Symfony/Component/Security/Csrf/Tests/TokenStorage/NativeSessionTokenStorageTest.php

@@ -29,14 +29,6 @@ class NativeSessionTokenStorageTest extends TestCase
      */
     private $storage;
 
-    public static function setUpBeforeClass()
-    {
-        ini_set('session.save_handler', 'files');
-        ini_set('session.save_path', sys_get_temp_dir());
-
-        parent::setUpBeforeClass();
-    }
-
     protected function setUp()
     {
         $_SESSION = array();