Merge branch '2.3' into 2.7

* 2.3:
  [Finder] Partially revert #17134 to fix a regression
  [HttpKernel] Fix mem usage when stripping the prod container
  exception when registering bags for started sessions

Conflicts:
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/HttpKernel/Kernel.php

Author: nicolas-grekas

Dumper/PhpDumper.php

@@ -26,6 +26,7 @@
 use Symfony\Component\DependencyInjection\ExpressionLanguage;
 use Symfony\Component\ExpressionLanguage\Expression;
 use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
+use Symfony\Component\HttpKernel\Kernel;
 
 /**
  * PhpDumper dumps a service container as a PHP class.
@@ -57,6 +58,7 @@ class PhpDumper extends Dumper
     private $expressionLanguage;
     private $targetDirRegex;
     private $targetDirMaxMatches;
+    private $docStar;
 
     /**
      * @var ExpressionFunctionProviderInterface[]
@@ -108,7 +110,9 @@ public function dump(array $options = array())
             'class' => 'ProjectServiceContainer',
             'base_class' => 'Container',
             'namespace' => '',
+            'debug' => true,
         ), $options);
+        $this->docStar = $options['debug'] ? '*' : '';
 
         if (!empty($options['file']) && is_dir($dir = dirname($options['file']))) {
             // Build a regexp where the first root dirs are mandatory,
@@ -233,9 +237,15 @@ private function addProxyClasses()
             array($this->getProxyDumper(), 'isProxyCandidate')
         );
         $code = '';
+        $strip = '' === $this->docStar && method_exists('Symfony\Component\HttpKernel\Kernel', 'stripComments');
 
         foreach ($definitions as $definition) {
-            $code .= "\n".$this->getProxyDumper()->getProxyCode($definition);
+            $proxyCode = "\n".$this->getProxyDumper()->getProxyCode($definition);
+            if ($strip) {
+                $proxyCode = "<?php\n".$proxyCode;
+                $proxyCode = substr(Kernel::stripComments($proxyCode), 5);
+            }
+            $code .= $proxyCode;
         }
 
         return $code;
@@ -621,7 +631,7 @@ private function addService($id, $definition)
         $visibility = $isProxyCandidate ? 'public' : 'protected';
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Gets the '$id' service.$doc
      *$lazyInitializationDoc
      * $return
@@ -737,7 +747,7 @@ private function addServiceSynchronizer($id, Definition $definition)
 
         return <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Updates the '$id' service.
      */
     protected function synchronize{$this->camelize($id)}Service()
@@ -829,7 +839,7 @@ private function startClass($class, $baseClass, $namespace)
 use Symfony\Component\DependencyInjection\Exception\RuntimeException;
 $bagClass
 
-/**
+/*{$this->docStar}
  * $class.
  *
  * This class has been auto-generated
@@ -855,7 +865,7 @@ private function addConstructor()
 
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Constructor.
      */
     public function __construct()
@@ -892,7 +902,7 @@ private function addFrozenConstructor()
 
         $code = <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Constructor.
      */
     public function __construct()
@@ -939,7 +949,7 @@ private function addFrozenCompile()
     {
         return <<<EOF
 
-    /**
+    /*{$this->docStar}
      * {@inheritdoc}
      */
     public function compile()
@@ -1060,11 +1070,14 @@ public function getParameterBag()
     }
 
 EOF;
+            if ('' === $this->docStar) {
+                $code = str_replace('/**', '/*', $code);
+            }
         }
 
         $code .= <<<EOF
 
-    /**
+    /*{$this->docStar}
      * Gets the default parameters.
      *
      * @return array An array of the default parameters