Update to Drupal 8.0.0-beta15. For more information, see: https://www.drupal.org/node/2563023

core/vendor/symfony/http-kernel/Client.php

@@ -101,7 +101,7 @@ class Client extends BaseClient
 
         $r = new \ReflectionClass('\\Symfony\\Component\\ClassLoader\\ClassLoader');
         $requirePath = str_replace("'", "\\'", $r->getFileName());
-        $symfonyPath = str_replace("'", "\\'", realpath(__DIR__.'/../../..'));
+        $symfonyPath = str_replace("'", "\\'", dirname(dirname(dirname(__DIR__))));
         $errorReporting = error_reporting();
 
         $code = <<<EOF

core/vendor/symfony/http-kernel/EventListener/RouterListener.php

@@ -140,7 +140,7 @@ class RouterListener implements EventSubscriberInterface
             }
 
             if (null !== $this->logger) {
-                $this->logger->info(sprintf('Matched route "%s".', $parameters['_route']), array(
+                $this->logger->info(sprintf('Matched route "%s".', isset($parameters['_route']) ? $parameters['_route'] : 'n/a'), array(
                     'route_parameters' => $parameters,
                     'request_uri' => $request->getUri(),
                 ));

core/vendor/symfony/http-kernel/HttpCache/HttpCache.php

@@ -160,7 +160,11 @@ class HttpCache implements HttpKernelInterface, TerminableInterface
      */
     public function getSurrogate()
     {
-        return $this->getEsi();
+        if (!$this->surrogate instanceof Esi) {
+            throw new \LogicException('This instance of HttpCache was not set up to use ESI as surrogate handler. You must overwrite and use createSurrogate');
+        }
+
+        return $this->surrogate;
     }
 
     /**
@@ -176,11 +180,7 @@ class HttpCache implements HttpKernelInterface, TerminableInterface
     {
         @trigger_error('The '.__METHOD__.' method is deprecated since version 2.6 and will be removed in 3.0. Use the getSurrogate() method instead.', E_USER_DEPRECATED);
 
-        if (!$this->surrogate instanceof Esi) {
-            throw new \LogicException('This instance of HttpCache was not set up to use ESI as surrogate handler. You must overwrite and use createSurrogate');
-        }
-
-        return $this->surrogate;
+        return $this->getSurrogate();
     }
 
     /**

core/vendor/symfony/http-kernel/Kernel.php

@@ -60,11 +60,11 @@ abstract class Kernel implements KernelInterface, TerminableInterface
     protected $startTime;
     protected $loadClassCache;
 
-    const VERSION = '2.7.2';
-    const VERSION_ID = '20702';
+    const VERSION = '2.7.3';
+    const VERSION_ID = '20703';
     const MAJOR_VERSION = '2';
     const MINOR_VERSION = '7';
-    const RELEASE_VERSION = '2';
+    const RELEASE_VERSION = '3';
     const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '05/2018';

core/vendor/symfony/http-kernel/Tests/EventListener/RouterListenerTest.php

@@ -128,4 +128,34 @@ class RouterListenerTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals('GET', $context->getMethod());
     }
+
+    /**
+     * @dataProvider getLoggingParameterData
+     */
+    public function testLoggingParameter($parameter, $log)
+    {
+        $requestMatcher = $this->getMock('Symfony\Component\Routing\Matcher\RequestMatcherInterface');
+        $requestMatcher->expects($this->once())
+          ->method('matchRequest')
+          ->will($this->returnValue($parameter));
+
+        $logger = $this->getMock('Psr\Log\LoggerInterface');
+        $logger->expects($this->once())
+          ->method('info')
+          ->with($this->equalTo($log));
+
+        $kernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $request = Request::create('http://localhost/');
+
+        $listener = new RouterListener($requestMatcher, new RequestContext(), $logger, $this->requestStack);
+        $listener->onKernelRequest(new GetResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST));
+    }
+
+    public function getLoggingParameterData()
+    {
+        return array(
+            array(array('_route' => 'foo'), 'Matched route "foo".'),
+            array(array(), 'Matched route "n/a".'),
+        );
+    }
 }

core/vendor/symfony/http-kernel/composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.9",
-        "symfony/event-dispatcher": "~2.5.9|~2.6,>=2.6.2",
+        "symfony/event-dispatcher": "~2.6,>=2.6.7",
         "symfony/http-foundation": "~2.5,>=2.5.4",
         "symfony/debug": "~2.6,>=2.6.2",
         "psr/log": "~1.0"