diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
index 8481dc78e7..5730807fac 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/TemplateNameParser.php
@@ -11,9 +11,9 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Templating;
 
-use Symfony\Component\Templating\TemplateNameParserInterface;
 use Symfony\Component\Templating\TemplateReferenceInterface;
 use Symfony\Component\HttpKernel\KernelInterface;
+use Symfony\Component\Templating\TemplateNameParser as BaseTemplateNameParser;
 
 /**
  * TemplateNameParser converts template names from the short notation
@@ -22,7 +22,7 @@ use Symfony\Component\HttpKernel\KernelInterface;
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class TemplateNameParser implements TemplateNameParserInterface
+class TemplateNameParser extends BaseTemplateNameParser
 {
     protected $kernel;
     protected $cache = array();
@@ -56,7 +56,7 @@ class TemplateNameParser implements TemplateNameParserInterface
         }
 
         if (!preg_match('/^([^:]*):([^:]*):(.+)\.([^\.]+)\.([^\.]+)$/', $name, $matches)) {
-            throw new \InvalidArgumentException(sprintf('Template name "%s" is not valid (format is "bundle:section:template.format.engine").', $name));
+            return parent::parse($name);
         }
 
         $template = new TemplateReference($matches[1], $matches[2], $matches[3], $matches[4], $matches[5]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
index 12747e6dc2..30bfc56a11 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/AppKernel.php
@@ -105,7 +105,8 @@ class AppKernel extends Kernel
 
     public function unserialize($str)
     {
-        call_user_func_array(array($this, '__construct'), unserialize($str));
+        $a = unserialize($str);
+        $this->__construct($a[0], $a[1], $a[2], $a[3]);
     }
 
     protected function getKernelParameters()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
index 2a1544c91b..ca10c3a8fe 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Templating/TemplateNameParserTest.php
@@ -14,6 +14,7 @@ namespace Symfony\Bundle\FrameworkBundle\Tests\Templating;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser;
 use Symfony\Bundle\FrameworkBundle\Templating\TemplateReference;
+use Symfony\Component\Templating\TemplateReference as BaseTemplateReference;
 
 class TemplateNameParserTest extends TestCase
 {
@@ -63,25 +64,17 @@ class TemplateNameParserTest extends TestCase
             array(':Post:index.html.php', new TemplateReference('', 'Post', 'index', 'html', 'php')),
             array('::index.html.php', new TemplateReference('', '', 'index', 'html', 'php')),
             array('FooBundle:Post:foo.bar.index.html.php', new TemplateReference('FooBundle', 'Post', 'foo.bar.index', 'html', 'php')),
+            array('/path/to/section/name.php', new BaseTemplateReference('/path/to/section/name.php', 'php')),
+            array('name.twig', new BaseTemplateReference('name.twig', 'twig')),
+            array('name', new BaseTemplateReference('name')),
         );
     }
 
     /**
-     * @dataProvider      getInvalidLogicalNameProvider
      * @expectedException \InvalidArgumentException
      */
-    public function testParseInvalidName($name)
+    public function testParseValidNameWithNotFoundBundle()
     {
-        $this->parser->parse($name);
-    }
-
-    public function getInvalidLogicalNameProvider()
-    {
-        return array(
-            array('BarBundle:Post:index.html.php'),
-            array('FooBundle:Post:index'),
-            array('FooBundle:Post'),
-            array('FooBundle:Post:foo:bar'),
-        );
+        $this->parser->parse('BarBundle:Post:index.html.php');
     }
 }
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
index 57816ccef9..dfce6e4a6c 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/AppKernel.php
@@ -105,7 +105,8 @@ class AppKernel extends Kernel
 
     public function unserialize($str)
     {
-        call_user_func_array(array($this, '__construct'), unserialize($str));
+        $a = unserialize($str);
+        $this->__construct($a[0], $a[1], $a[2], $a[3]);
     }
 
     protected function getKernelParameters()
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/profiler.xml b/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/profiler.xml
index 69f934e53f..d9708f9c50 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/profiler.xml
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/profiler.xml
@@ -4,47 +4,47 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
 
-    <route id="_profiler_home" pattern="/">
+    <route id="_profiler_home" path="/">
         <default key="_controller">web_profiler.controller.profiler:homeAction</default>
     </route>
 
-    <route id="_profiler_search" pattern="/search">
+    <route id="_profiler_search" path="/search">
         <default key="_controller">web_profiler.controller.profiler:searchAction</default>
     </route>
 
-    <route id="_profiler_search_bar" pattern="/search_bar">
+    <route id="_profiler_search_bar" path="/search_bar">
         <default key="_controller">web_profiler.controller.profiler:searchBarAction</default>
     </route>
 
-    <route id="_profiler_purge" pattern="/purge">
+    <route id="_profiler_purge" path="/purge">
         <default key="_controller">web_profiler.controller.profiler:purgeAction</default>
     </route>
 
-    <route id="_profiler_info" pattern="/info/{about}">
+    <route id="_profiler_info" path="/info/{about}">
         <default key="_controller">web_profiler.controller.profiler:infoAction</default>
     </route>
 
-    <route id="_profiler_phpinfo" pattern="/phpinfo">
+    <route id="_profiler_phpinfo" path="/phpinfo">
         <default key="_controller">web_profiler.controller.profiler:phpinfoAction</default>
     </route>
 
-    <route id="_profiler_search_results" pattern="/{token}/search/results">
+    <route id="_profiler_search_results" path="/{token}/search/results">
         <default key="_controller">web_profiler.controller.profiler:searchResultsAction</default>
     </route>
 
-    <route id="_profiler" pattern="/{token}">
+    <route id="_profiler" path="/{token}">
         <default key="_controller">web_profiler.controller.profiler:panelAction</default>
     </route>
 
-    <route id="_profiler_router" pattern="/{token}/router">
+    <route id="_profiler_router" path="/{token}/router">
         <default key="_controller">web_profiler.controller.router:panelAction</default>
     </route>
 
-    <route id="_profiler_exception" pattern="/{token}/exception">
+    <route id="_profiler_exception" path="/{token}/exception">
         <default key="_controller">web_profiler.controller.exception:showAction</default>
     </route>
 
-    <route id="_profiler_exception_css" pattern="/{token}/exception.css">
+    <route id="_profiler_exception_css" path="/{token}/exception.css">
         <default key="_controller">web_profiler.controller.exception:cssAction</default>
     </route>
 
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/wdt.xml b/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/wdt.xml
index 5f6851c9ff..1027ce42f6 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/wdt.xml
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/config/routing/wdt.xml
@@ -4,7 +4,7 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
 
-    <route id="_wdt" pattern="/{token}">
+    <route id="_wdt" path="/{token}">
         <default key="_controller">web_profiler.controller.profiler:toolbarAction</default>
     </route>
 </routes>
diff --git a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
index 7cbddc6cf3..885863bbb6 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
@@ -225,8 +225,10 @@ class ExprBuilder
     {
         foreach ($expressions as $k => $expr) {
             if ($expr instanceof ExprBuilder) {
-                $expressions[$k] = function ($v) use ($expr) {
-                    return call_user_func($expr->ifPart, $v) ? call_user_func($expr->thenPart, $v) : $v;
+                $if = $expr->ifPart;
+                $then = $expr->thenPart;
+                $expressions[$k] = function ($v) use ($if, $then) {
+                    return $if($v) ? $then($v) : $v;
                 };
             }
         }
diff --git a/src/Symfony/Component/Config/Definition/VariableNode.php b/src/Symfony/Component/Config/Definition/VariableNode.php
index 61acc1821a..d253a00859 100644
--- a/src/Symfony/Component/Config/Definition/VariableNode.php
+++ b/src/Symfony/Component/Config/Definition/VariableNode.php
@@ -49,7 +49,9 @@ class VariableNode extends BaseNode implements PrototypeNodeInterface
      */
     public function getDefaultValue()
     {
-        return $this->defaultValue instanceof \Closure ? call_user_func($this->defaultValue) : $this->defaultValue;
+        $v = $this->defaultValue;
+
+        return $v instanceof \Closure ? $v() : $v;
     }
 
     /**
diff --git a/src/Symfony/Component/Config/Exception/FileLoaderImportCircularReferenceException.php b/src/Symfony/Component/Config/Exception/FileLoaderImportCircularReferenceException.php
index b1ad4420dc..6a3b01cfbe 100644
--- a/src/Symfony/Component/Config/Exception/FileLoaderImportCircularReferenceException.php
+++ b/src/Symfony/Component/Config/Exception/FileLoaderImportCircularReferenceException.php
@@ -22,6 +22,6 @@ class FileLoaderImportCircularReferenceException extends FileLoaderLoadException
     {
         $message = sprintf('Circular reference detected in "%s" ("%s" > "%s").', $this->varToString($resources[0]), implode('" > "', $resources), $resources[0]);
 
-        call_user_func('Exception::__construct', $message, $code, $previous);
+        \Exception::__construct($message, $code, $previous);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 23dd7cecef..705d0b08fd 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -109,17 +109,19 @@ class PhpDumper extends Dumper
         ), $options);
 
         if (!empty($options['file']) && is_dir($dir = dirname($options['file']))) {
-            // Build a regexp where the first two root dirs are mandatory,
+            // Build a regexp where the first root dirs are mandatory,
             // but every other sub-dir is optional up to the full path in $dir
+            // Mandate at least 2 root dirs and not more that 5 optional dirs.
 
             $dir = explode(DIRECTORY_SEPARATOR, realpath($dir));
             $i = count($dir);
 
             if (3 <= $i) {
                 $regex = '';
-                $this->targetDirMaxMatches = $i - 3;
+                $lastOptionalDir = $i > 8 ? $i - 5 : 3;
+                $this->targetDirMaxMatches = $i - $lastOptionalDir;
 
-                while (2 < --$i) {
+                while (--$i >= $lastOptionalDir) {
                     $regex = sprintf('(%s%s)?', preg_quote(DIRECTORY_SEPARATOR.$dir[$i], '#'), $regex);
                 }
 
@@ -786,6 +788,9 @@ $bagClass
  */
 class $class extends $baseClass
 {
+    private \$parameters;
+    private \$targetDirs = array();
+
 EOF;
     }
 
@@ -796,6 +801,7 @@ EOF;
      */
     private function addConstructor()
     {
+        $targetDirs = $this->exportTargetDirs();
         $arguments = $this->container->getParameterBag()->all() ? 'new ParameterBag($this->getDefaultParameters())' : null;
 
         $code = <<<EOF
@@ -804,7 +810,7 @@ EOF;
      * Constructor.
      */
     public function __construct()
-    {
+    {{$targetDirs}
         parent::__construct($arguments);
 
 EOF;
@@ -833,6 +839,8 @@ EOF;
      */
     private function addFrozenConstructor()
     {
+        $targetDirs = $this->exportTargetDirs();
+
         $code = <<<EOF
 
     private \$parameters;
@@ -841,7 +849,7 @@ EOF;
      * Constructor.
      */
     public function __construct()
-    {
+    {{$targetDirs}
 EOF;
 
         if ($this->container->getParameterBag()->all()) {
@@ -1405,6 +1413,17 @@ EOF;
         return $this->expressionLanguage;
     }
 
+    private function exportTargetDirs()
+    {
+        return null === $this->targetDirRegex ? '' : <<<EOF
+
+        \$dir = __DIR__;
+        for (\$i = 1; \$i <= {$this->targetDirMaxMatches}; ++\$i) {
+            \$this->targetDirs[\$i] = \$dir = dirname(\$dir);
+        }
+EOF;
+    }
+
     private function export($value)
     {
         if (null !== $this->targetDirRegex && is_string($value) && preg_match($this->targetDirRegex, $value, $matches, PREG_OFFSET_CAPTURE)) {
@@ -1413,8 +1432,8 @@ EOF;
             $suffix = isset($value[$suffix]) ? '.'.var_export(substr($value, $suffix), true) : '';
             $dirname = '__DIR__';
 
-            for ($i = $this->targetDirMaxMatches - count($matches); 0 <= $i; --$i) {
-                $dirname = sprintf('dirname(%s)', $dirname);
+            if (0 < $offset = 1 + $this->targetDirMaxMatches - count($matches)) {
+                $dirname = sprintf('$this->targetDirs[%d]', $offset);
             }
 
             if ($prefix || $suffix) {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 2693cbd2b1..687ea468a7 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -85,13 +85,14 @@ class PhpDumperTest extends \PHPUnit_Framework_TestCase
         $definition = new Definition();
         $definition->setClass('stdClass');
         $definition->addArgument('%foo%');
-        $definition->addArgument(array('%foo%' => '%foo%'));
+        $definition->addArgument(array('%foo%' => '%buz%/'));
 
         $container = new ContainerBuilder();
         $container->setDefinition('test', $definition);
         $container->setParameter('foo', 'wiz'.dirname(dirname(__FILE__)));
         $container->setParameter('bar', dirname(__FILE__));
         $container->setParameter('baz', '%bar%/PhpDumperTest.php');
+        $container->setParameter('buz', dirname(dirname(__DIR__)));
         $container->compile();
 
         $dumper = new PhpDumper($container);
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
index ca7a5c6a24..116d7dfe70 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
@@ -17,6 +17,9 @@ use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
  */
 class Container extends AbstractContainer
 {
+    private $parameters;
+    private $targetDirs = array();
+
     /**
      * Constructor.
      */
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
index 084e7891af..90b59ff4eb 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
@@ -16,6 +16,9 @@ use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
  */
 class ProjectServiceContainer extends Container
 {
+    private $parameters;
+    private $targetDirs = array();
+
     /**
      * Constructor.
      */
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
index 2ccd9a07e4..43a56eec51 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
@@ -17,6 +17,7 @@ use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
 class ProjectServiceContainer extends Container
 {
     private $parameters;
+    private $targetDirs = array();
 
     /**
      * Constructor.
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services11.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services11.php
index 361b352c74..23bae47920 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services11.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services11.php
@@ -17,6 +17,7 @@ use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
 class ProjectServiceContainer extends Container
 {
     private $parameters;
+    private $targetDirs = array();
 
     /**
      * Constructor.
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
index 52d2702afd..3081abd6b0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
@@ -16,11 +16,18 @@ use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
  */
 class ProjectServiceContainer extends Container
 {
+    private $parameters;
+    private $targetDirs = array();
+
     /**
      * Constructor.
      */
     public function __construct()
     {
+        $dir = __DIR__;
+        for ($i = 1; $i <= 5; ++$i) {
+            $this->targetDirs[$i] = $dir = dirname($dir);
+        }
         $this->parameters = $this->getDefaultParameters();
 
         $this->services =
@@ -48,7 +55,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getTestService()
     {
-        return $this->services['test'] = new \stdClass(('wiz'.dirname(__DIR__)), array(('wiz'.dirname(__DIR__)) => ('wiz'.dirname(__DIR__))));
+        return $this->services['test'] = new \stdClass(('wiz'.$this->targetDirs[1]), array(('wiz'.$this->targetDirs[1]) => ($this->targetDirs[2].'/')));
     }
 
     /**
@@ -102,9 +109,10 @@ class ProjectServiceContainer extends Container
     protected function getDefaultParameters()
     {
         return array(
-            'foo' => ('wiz'.dirname(__DIR__)),
+            'foo' => ('wiz'.$this->targetDirs[1]),
             'bar' => __DIR__,
             'baz' => (__DIR__.'/PhpDumperTest.php'),
+            'buz' => $this->targetDirs[2],
         );
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
index f922d2000c..1b86dfc3f8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
@@ -16,6 +16,9 @@ use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
  */
 class ProjectServiceContainer extends Container
 {
+    private $parameters;
+    private $targetDirs = array();
+
     /**
      * Constructor.
      */
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
index 8fe63d7056..876dc0eeb0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
@@ -16,6 +16,9 @@ use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
  */
 class ProjectServiceContainer extends Container
 {
+    private $parameters;
+    private $targetDirs = array();
+
     /**
      * Constructor.
      */
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index 8962b26398..4962a25880 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -17,6 +17,7 @@ use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
 class ProjectServiceContainer extends Container
 {
     private $parameters;
+    private $targetDirs = array();
 
     /**
      * Constructor.
diff --git a/src/Symfony/Component/Finder/Shell/Command.php b/src/Symfony/Component/Finder/Shell/Command.php
index 78824d0df4..1f69afb2c7 100644
--- a/src/Symfony/Component/Finder/Shell/Command.php
+++ b/src/Symfony/Component/Finder/Shell/Command.php
@@ -246,14 +246,14 @@ class Command
      */
     public function execute()
     {
-        if (null === $this->errorHandler) {
+        if (null === $errorHandler = $this->errorHandler) {
             exec($this->join(), $output);
         } else {
             $process = proc_open($this->join(), array(0 => array('pipe', 'r'), 1 => array('pipe', 'w'), 2 => array('pipe', 'w')), $pipes);
             $output = preg_split('~(\r\n|\r|\n)~', stream_get_contents($pipes[1]), -1, PREG_SPLIT_NO_EMPTY);
 
             if ($error = stream_get_contents($pipes[2])) {
-                call_user_func($this->errorHandler, $error);
+                $errorHandler($error);
             }
 
             proc_close($process);
diff --git a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
index da8c34c177..5546ba2ed8 100644
--- a/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/Tests/HttpCache/TestHttpKernel.php
@@ -72,8 +72,8 @@ class TestHttpKernel extends HttpKernel implements ControllerResolverInterface
 
         $response = new Response($this->body, $this->status, $this->headers);
 
-        if (null !== $this->customizer) {
-            call_user_func($this->customizer, $request, $response);
+        if (null !== $customizer = $this->customizer) {
+            $customizer($request, $response);
         }
 
         return $response;
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index c2f8641c56..526be032a7 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -1371,11 +1371,12 @@ class Process
             $result = $this->processPipes->read($blocking);
         }
 
+        $callback = $this->callback;
         foreach ($result as $type => $data) {
             if (3 == $type) {
                 $this->fallbackExitcode = (int) $data;
             } else {
-                call_user_func($this->callback, $type === self::STDOUT ? self::OUT : self::ERR, $data);
+                $callback($type === self::STDOUT ? self::OUT : self::ERR, $data);
             }
         }
     }
diff --git a/src/Symfony/Component/Process/Tests/AbstractProcessTest.php b/src/Symfony/Component/Process/Tests/AbstractProcessTest.php
index 982a4d53de..521d4d960b 100644
--- a/src/Symfony/Component/Process/Tests/AbstractProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/AbstractProcessTest.php
@@ -844,7 +844,7 @@ abstract class AbstractProcessTest extends \PHPUnit_Framework_TestCase
     {
         $process = $this->getProcess('php -m');
         $this->setExpectedException('Symfony\Component\Process\Exception\LogicException', sprintf('Process must be started before calling %s.', $method));
-        call_user_func(array($process, $method));
+        $process->{$method}();
     }
 
     public function provideMethodsThatNeedARunningProcess()
@@ -866,7 +866,7 @@ abstract class AbstractProcessTest extends \PHPUnit_Framework_TestCase
         $process = $this->getProcess('php -r "sleep(1);"');
         $process->start();
         try {
-            call_user_func(array($process, $method));
+            $process->{$method}();
             $process->stop(0);
             $this->fail('A LogicException must have been thrown');
         } catch (\Exception $e) {
diff --git a/src/Symfony/Component/Routing/Loader/ClosureLoader.php b/src/Symfony/Component/Routing/Loader/ClosureLoader.php
index 8212c2916d..9edab1e9e3 100644
--- a/src/Symfony/Component/Routing/Loader/ClosureLoader.php
+++ b/src/Symfony/Component/Routing/Loader/ClosureLoader.php
@@ -37,7 +37,7 @@ class ClosureLoader extends Loader
      */
     public function load($closure, $type = null)
     {
-        return call_user_func($closure);
+        return $closure();
     }
 
     /**
diff --git a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
index a6a29e7e6e..6f073c7d87 100644
--- a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
@@ -50,7 +50,9 @@ class CallbackValidator extends ConstraintValidator
         $methods = $constraint->methods ?: array($constraint->callback);
 
         foreach ($methods as $method) {
-            if (is_array($method) || $method instanceof \Closure) {
+            if ($method instanceof \Closure) {
+                $method($object, $this->context);
+            } elseif (is_array($method)) {
                 if (!is_callable($method)) {
                     throw new ConstraintDefinitionException(sprintf('"%s::%s" targeted by Callback constraint is not a valid callable', $method[0], $method[1]));
                 }
diff --git a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
index 5640c73317..460e463563 100644
--- a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
@@ -49,13 +49,12 @@ class ChoiceValidator extends ConstraintValidator
         }
 
         if ($constraint->callback) {
-            if (is_callable(array($this->context->getClassName(), $constraint->callback))) {
-                $choices = call_user_func(array($this->context->getClassName(), $constraint->callback));
-            } elseif (is_callable($constraint->callback)) {
-                $choices = call_user_func($constraint->callback);
-            } else {
+            if (!is_callable($choices = array($this->context->getClassName(), $constraint->callback))
+                && !is_callable($choices = $constraint->callback)
+            ) {
                 throw new ConstraintDefinitionException('The Choice constraint expects a valid callback');
             }
+            $choices = call_user_func($choices);
         } else {
             $choices = $constraint->choices;
         }
diff --git a/src/Symfony/Component/Validator/Constraints/TypeValidator.php b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
index ca6e5aa7ca..66217d0c39 100644
--- a/src/Symfony/Component/Validator/Constraints/TypeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
@@ -40,9 +40,9 @@ class TypeValidator extends ConstraintValidator
         $isFunction = 'is_'.$type;
         $ctypeFunction = 'ctype_'.$type;
 
-        if (function_exists($isFunction) && call_user_func($isFunction, $value)) {
+        if (function_exists($isFunction) && $isFunction($value)) {
             return;
-        } elseif (function_exists($ctypeFunction) && call_user_func($ctypeFunction, $value)) {
+        } elseif (function_exists($ctypeFunction) && $ctypeFunction($value)) {
             return;
         } elseif ($value instanceof $constraint->type) {
             return;