Merge branch '2.4' into 2.5

* 2.4:
  added missing test
  fixed CS
  [HttpFoundation] Remove content-related headers if content is empty
  bumped Symfony version to 2.4.8
  removed defaults from PHPUnit configuration

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php

CHANGELOG.md

@@ -1,6 +1,19 @@
 CHANGELOG
 =========
 
+2.5.0
+-----
+
+* added ExceptionHandler::setHandler()
+* added UndefinedMethodFatalErrorHandler
+* deprecated DummyException
+
+2.4.0
+-----
+
+ * added a DebugClassLoader able to wrap any autoloader providing a findFile method
+ * improved error messages for not found classes and functions
+
 2.3.0
 -----
 

Debug.php

@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\Debug;
 
-use Symfony\Component\ClassLoader\DebugClassLoader;
-
 /**
  * Registers all the debug tools.
  *
@@ -30,8 +28,8 @@ class Debug
      * If the Symfony ClassLoader component is available, a special
      * class loader is also registered.
      *
-     * @param int  $errorReportingLevel The level of error reporting you want
-     * @param bool $displayErrors       Whether to display errors (for development) or just log them (for production)
+     * @param int     $errorReportingLevel The level of error reporting you want
+     * @param bool    $displayErrors       Whether to display errors (for development) or just log them (for production)
      */
     public static function enable($errorReportingLevel = null, $displayErrors = true)
     {
@@ -51,8 +49,6 @@ class Debug
             ini_set('display_errors', 1);
         }
 
-        if (class_exists('Symfony\Component\ClassLoader\DebugClassLoader')) {
-            DebugClassLoader::enable();
-        }
+        DebugClassLoader::enable();
     }
 }

DebugClassLoader.php

@@ -0,0 +1,226 @@
+<?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\Debug;
+
+/**
+ * Autoloader checking if the class is really defined in the file found.
+ *
+ * The ClassLoader will wrap all registered autoloaders
+ * and will throw an exception if a file is found but does
+ * not declare the class.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Christophe Coevoet <stof@notk.org>
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @api
+ */
+class DebugClassLoader
+{
+    private $classLoader;
+    private $isFinder;
+    private $wasFinder;
+    private static $caseCheck;
+
+    /**
+     * Constructor.
+     *
+     * @param callable|object $classLoader
+     *
+     * @api
+     * @deprecated since 2.5, passing an object is deprecated and support for it will be removed in 3.0
+     */
+    public function __construct($classLoader)
+    {
+        $this->wasFinder = is_object($classLoader) && method_exists($classLoader, 'findFile');
+
+        if ($this->wasFinder) {
+            $this->classLoader = array($classLoader, 'loadClass');
+            $this->isFinder = true;
+        } else {
+            $this->classLoader = $classLoader;
+            $this->isFinder = is_array($classLoader) && method_exists($classLoader[0], 'findFile');
+        }
+
+        if (!isset(self::$caseCheck)) {
+            self::$caseCheck = false !== stripos(PHP_OS, 'win') ? (false !== stripos(PHP_OS, 'darwin') ? 2 : 1) : 0;
+        }
+    }
+
+    /**
+     * Gets the wrapped class loader.
+     *
+     * @return callable|object a class loader
+     *
+     * @deprecated since 2.5, returning an object is deprecated and support for it will be removed in 3.0
+     */
+    public function getClassLoader()
+    {
+        if ($this->wasFinder) {
+            return $this->classLoader[0];
+        } else {
+            return $this->classLoader;
+        }
+    }
+
+    /**
+     * Wraps all autoloaders
+     */
+    public static function enable()
+    {
+        // Ensures we don't hit https://bugs.php.net/42098
+        class_exists(__NAMESPACE__.'\ErrorHandler', true);
+
+        if (!is_array($functions = spl_autoload_functions())) {
+            return;
+        }
+
+        foreach ($functions as $function) {
+            spl_autoload_unregister($function);
+        }
+
+        foreach ($functions as $function) {
+            if (!is_array($function) || !$function[0] instanceof self) {
+                $function = array(new static($function), 'loadClass');
+            }
+
+            spl_autoload_register($function);
+        }
+    }
+
+    /**
+     * Disables the wrapping.
+     */
+    public static function disable()
+    {
+        if (!is_array($functions = spl_autoload_functions())) {
+            return;
+        }
+
+        foreach ($functions as $function) {
+            spl_autoload_unregister($function);
+        }
+
+        foreach ($functions as $function) {
+            if (is_array($function) && $function[0] instanceof self) {
+                $function = $function[0]->getClassLoader();
+            }
+
+            spl_autoload_register($function);
+        }
+    }
+
+    /**
+     * Finds a file by class name
+     *
+     * @param string $class A class name to resolve to file
+     *
+     * @return string|null
+     *
+     * @deprecated Deprecated since 2.5, to be removed in 3.0.
+     */
+    public function findFile($class)
+    {
+        if ($this->wasFinder) {
+            return $this->classLoader[0]->findFile($class);
+        }
+    }
+
+    /**
+     * Loads the given class or interface.
+     *
+     * @param string $class The name of the class
+     *
+     * @return bool|null    True, if loaded
+     *
+     * @throws \RuntimeException
+     */
+    public function loadClass($class)
+    {
+        ErrorHandler::stackErrors();
+
+        try {
+            if ($this->isFinder) {
+                if ($file = $this->classLoader[0]->findFile($class)) {
+                    require $file;
+                }
+            } else {
+                call_user_func($this->classLoader, $class);
+                $file = false;
+            }
+        } catch (\Exception $e) {
+            ErrorHandler::unstackErrors();
+
+            throw $e;
+        }
+
+        ErrorHandler::unstackErrors();
+
+        $exists = class_exists($class, false) || interface_exists($class, false) || (function_exists('trait_exists') && trait_exists($class, false));
+
+        if ('\\' === $class[0]) {
+            $class = substr($class, 1);
+        }
+
+        if ($exists) {
+            $refl = new \ReflectionClass($class);
+            $name = $refl->getName();
+
+            if ($name !== $class && 0 === strcasecmp($name, $class)) {
+                throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: %s vs %s', $class, $name));
+            }
+        }
+
+        if ($file) {
+            if (!$exists) {
+                if (false !== strpos($class, '/')) {
+                    throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
+                }
+
+                throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
+            }
+            if (self::$caseCheck && preg_match('#([/\\\\][a-zA-Z_\x7F-\xFF][a-zA-Z0-9_\x7F-\xFF]*)+\.(php|hh)$#D', $file, $tail)) {
+                $tail = $tail[0];
+                $real = $refl->getFilename();
+
+                if (2 === self::$caseCheck) {
+                    // realpath() on MacOSX doesn't normalize the case of characters
+                    $cwd = getcwd();
+                    $basename = strrpos($real, '/');
+                    chdir(substr($real, 0, $basename));
+                    $basename = substr($real, $basename + 1);
+                    // glob() patterns are case-sensitive even if the underlying fs is not
+                    if (!in_array($basename, glob($basename.'*', GLOB_NOSORT), true)) {
+                        $real = getcwd().'/';
+                        $h = opendir('.');
+                        while (false !== $f = readdir($h)) {
+                            if (0 === strcasecmp($f, $basename)) {
+                                $real .= $f;
+                                break;
+                            }
+                        }
+                        closedir($h);
+                    }
+                    chdir($cwd);
+                }
+
+                if ( 0 === substr_compare($real, $tail, -strlen($tail), strlen($tail), true)
+                  && 0 !== substr_compare($real, $tail, -strlen($tail), strlen($tail), false)
+                ) {
+                    throw new \RuntimeException(sprintf('Case mismatch between class and source file names: %s vs %s', $class, $real));
+                }
+            }
+
+            return true;
+        }
+    }
+}

ErrorHandler.php

@@ -11,35 +11,41 @@
 
 namespace Symfony\Component\Debug;
 
-use Symfony\Component\Debug\Exception\FatalErrorException;
-use Symfony\Component\Debug\Exception\ContextErrorException;
-use Symfony\Component\Debug\Exception\DummyException;
+use Psr\Log\LogLevel;
 use Psr\Log\LoggerInterface;
+use Symfony\Component\Debug\Exception\ContextErrorException;
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\Exception\OutOfMemoryException;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
+use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
+use Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface;
 
 /**
  * ErrorHandler.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Konstantin Myakshin <koc-dp@yandex.ru>
+ * @author Nicolas Grekas <p@tchwork.com>
  */
 class ErrorHandler
 {
     const TYPE_DEPRECATION = -100;
 
     private $levels = array(
-        E_WARNING => 'Warning',
-        E_NOTICE => 'Notice',
-        E_USER_ERROR => 'User Error',
-        E_USER_WARNING => 'User Warning',
-        E_USER_NOTICE => 'User Notice',
-        E_STRICT => 'Runtime Notice',
+        E_WARNING           => 'Warning',
+        E_NOTICE            => 'Notice',
+        E_USER_ERROR        => 'User Error',
+        E_USER_WARNING      => 'User Warning',
+        E_USER_NOTICE       => 'User Notice',
+        E_STRICT            => 'Runtime Notice',
         E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
-        E_DEPRECATED => 'Deprecated',
-        E_USER_DEPRECATED => 'User Deprecated',
-        E_ERROR => 'Error',
-        E_CORE_ERROR => 'Core Error',
-        E_COMPILE_ERROR => 'Compile Error',
-        E_PARSE => 'Parse',
+        E_DEPRECATED        => 'Deprecated',
+        E_USER_DEPRECATED   => 'User Deprecated',
+        E_ERROR             => 'Error',
+        E_CORE_ERROR        => 'Core Error',
+        E_COMPILE_ERROR     => 'Compile Error',
+        E_PARSE             => 'Parse Error',
     );
 
     private $level;
@@ -53,11 +59,15 @@ class ErrorHandler
      */
     private static $loggers = array();
 
+    private static $stackedErrors = array();
+
+    private static $stackedErrorLevels = array();
+
     /**
      * Registers the error handler.
      *
      * @param int  $level         The level at which the conversion to Exception is done (null to use the error_reporting() value and 0 to disable)
-     * @param bool $displayErrors Display errors (for dev environment) or just log they (production usage)
+     * @param bool $displayErrors Display errors (for dev environment) or just log them (production usage)
      *
      * @return ErrorHandler The registered error handler
      */
@@ -75,133 +85,285 @@ class ErrorHandler
         return $handler;
     }
 
+    /**
+     * Sets the level at which the conversion to Exception is done.
+     *
+     * @param int|null     $level The level (null to use the error_reporting() value and 0 to disable)
+     */
     public function setLevel($level)
     {
         $this->level = null === $level ? error_reporting() : $level;
     }
 
+    /**
+     * Sets the display_errors flag value.
+     *
+     * @param int     $displayErrors The display_errors flag value
+     */
     public function setDisplayErrors($displayErrors)
     {
         $this->displayErrors = $displayErrors;
     }
 
+    /**
+     * Sets a logger for the given channel.
+     *
+     * @param LoggerInterface $logger  A logger interface
+     * @param string          $channel The channel associated with the logger (deprecation, emergency or scream)
+     */
     public static function setLogger(LoggerInterface $logger, $channel = 'deprecation')
     {
         self::$loggers[$channel] = $logger;
     }
 
     /**
-     * @throws ContextErrorException When error_reporting returns error
+     * @throws \ErrorException When error_reporting returns error
      */
     public function handle($level, $message, $file = 'unknown', $line = 0, $context = array())
     {
-        if (0 === $this->level) {
-            return false;
-        }
-
         if ($level & (E_USER_DEPRECATED | E_DEPRECATED)) {
             if (isset(self::$loggers['deprecation'])) {
-                if (PHP_VERSION_ID < 50400) {
-                    $stack = array_map(
-                        function ($row) {
-                            unset($row['args']);
-
-                            return $row;
-                        },
-                        array_slice(debug_backtrace(false), 0, 10)
-                    );
+                if (self::$stackedErrorLevels) {
+                    self::$stackedErrors[] = func_get_args();
                 } else {
-                    $stack = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 10);
+                    if (version_compare(PHP_VERSION, '5.4', '<')) {
+                        $stack = array_map(
+                            function ($row) {
+                                unset($row['args']);
+
+                                return $row;
+                            },
+                            array_slice(debug_backtrace(false), 0, 10)
+                        );
+                    } else {
+                        $stack = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 10);
+                    }
+
+                    self::$loggers['deprecation']->warning($message, array('type' => self::TYPE_DEPRECATION, 'stack' => $stack));
                 }
 
-                self::$loggers['deprecation']->warning($message, array('type' => self::TYPE_DEPRECATION, 'stack' => $stack));
+                return true;
+            }
+        } elseif ($this->displayErrors && error_reporting() & $level && $this->level & $level) {
+            if (PHP_VERSION_ID < 50400 && isset($context['GLOBALS']) && is_array($context)) {
+                $c = $context;                  // Whatever the signature of the method,
+                unset($c['GLOBALS'], $context); // $context is always a reference in 5.3
+                $context = $c;
             }
 
-            return true;
+            $exception = sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line);
+            if ($context && class_exists('Symfony\Component\Debug\Exception\ContextErrorException')) {
+                // Checking for class existence is a work around for https://bugs.php.net/42098
+                $exception = new ContextErrorException($exception, 0, $level, $file, $line, $context);
+            } else {
+                $exception = new \ErrorException($exception, 0, $level, $file, $line);
+            }
+
+            if (PHP_VERSION_ID <= 50407 && (PHP_VERSION_ID >= 50400 || PHP_VERSION_ID <= 50317)) {
+                // Exceptions thrown from error handlers are sometimes not caught by the exception
+                // handler and shutdown handlers are bypassed before 5.4.8/5.3.18.
+                // We temporarily re-enable display_errors to prevent any blank page related to this bug.
+
+                $exception->errorHandlerCanary = new ErrorHandlerCanary();
+            }
+
+            throw $exception;
         }
 
-        if ($this->displayErrors && error_reporting() & $level && $this->level & $level) {
-            // make sure the ContextErrorException class is loaded (https://bugs.php.net/bug.php?id=65322)
-            if (!class_exists('Symfony\Component\Debug\Exception\ContextErrorException')) {
-                require __DIR__.'/Exception/ContextErrorException.php';
-            }
-            if (!class_exists('Symfony\Component\Debug\Exception\FlattenException')) {
-                require __DIR__.'/Exception/FlattenException.php';
-            }
+        if (isset(self::$loggers['scream']) && !(error_reporting() & $level)) {
+            if (self::$stackedErrorLevels) {
+                self::$stackedErrors[] = func_get_args();
+            } else {
+                switch ($level) {
+                    case E_USER_ERROR:
+                    case E_RECOVERABLE_ERROR:
+                        $logLevel = LogLevel::ERROR;
+                        break;
 
-            if (PHP_VERSION_ID < 50400 && isset($context['GLOBALS']) && is_array($context)) {
-                unset($context['GLOBALS']);
-            }
+                    case E_WARNING:
+                    case E_USER_WARNING:
+                        $logLevel = LogLevel::WARNING;
+                        break;
 
-            $level &= E_ALL | E_STRICT;
-            $exception = new ContextErrorException(sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line), 0, $level, $file, $line, $context);
-
-            // Exceptions thrown from error handlers are sometimes not caught by the exception
-            // handler, so we invoke it directly (https://bugs.php.net/bug.php?id=54275)
-            $exceptionHandler = set_exception_handler(function () {});
-            restore_exception_handler();
-
-            if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
-                $exceptionHandler[0]->handle($exception);
-
-                if (!class_exists('Symfony\Component\Debug\Exception\DummyException')) {
-                    require __DIR__.'/Exception/DummyException.php';
+                    default:
+                        $logLevel = LogLevel::NOTICE;
+                        break;
                 }
 
-                // we must stop the PHP script execution, as the exception has
-                // already been dealt with, so, let's throw an exception that
-                // will be caught by a dummy exception handler
-                set_exception_handler(function (\Exception $e) use ($exceptionHandler) {
-                    if (!$e instanceof DummyException) {
-                        // happens if our dummy exception is caught by a
-                        // catch-all from user code, in which case, let's the
-                        // current handler handle this "new" exception
-                        call_user_func($exceptionHandler, $e);
-                    }
-                });
-
-                throw new DummyException();
+                self::$loggers['scream']->log($logLevel, $message, array(
+                    'type' => $level,
+                    'file' => $file,
+                    'line' => $line,
+                    'scream' => error_reporting(),
+                ));
             }
         }
 
         return false;
     }
 
-    public function handleFatal()
+    /**
+     * Configure the error handler for delayed handling.
+     * Ensures also that non-catchable fatal errors are never silenced.
+     *
+     * As shown by http://bugs.php.net/42098 and http://bugs.php.net/60724
+     * PHP has a compile stage where it behaves unusually. To workaround it,
+     * we plug an error handler that only stacks errors for later.
+     *
+     * The most important feature of this is to prevent
+     * autoloading until unstackErrors() is called.
+     */
+    public static function stackErrors()
     {
-        if (null === $error = error_get_last()) {
-            return;
+        self::$stackedErrorLevels[] = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
+    }
+
+    /**
+     * Unstacks stacked errors and forwards to the regular handler
+     */
+    public static function unstackErrors()
+    {
+        $level = array_pop(self::$stackedErrorLevels);
+
+        if (null !== $level) {
+            $e = error_reporting($level);
+            if ($e !== ($level | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR)) {
+                // If the user changed the error level, do not overwrite it
+                error_reporting($e);
+            }
         }
 
+        if (empty(self::$stackedErrorLevels)) {
+            $errors = self::$stackedErrors;
+            self::$stackedErrors = array();
+
+            $errorHandler = set_error_handler('var_dump');
+            restore_error_handler();
+
+            if ($errorHandler) {
+                foreach ($errors as $e) {
+                    call_user_func_array($errorHandler, $e);
+                }
+            }
+        }
+    }
+
+    public function handleFatal()
+    {
         $this->reservedMemory = '';
-        $type = $error['type'] & (E_ALL | E_STRICT);
-        if (0 === $this->level || !in_array($type, array(E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_PARSE))) {
+        gc_collect_cycles();
+        $error = error_get_last();
+
+        // get current exception handler
+        $exceptionHandler = set_exception_handler('var_dump');
+        restore_exception_handler();
+
+        try {
+            while (self::$stackedErrorLevels) {
+                static::unstackErrors();
+            }
+        } catch (\Exception $exception) {
+            if ($exceptionHandler) {
+                call_user_func($exceptionHandler, $exception);
+
+                return;
+            }
+
+            if ($this->displayErrors) {
+                ini_set('display_errors', 1);
+            }
+
+            throw $exception;
+        }
+
+        if (!$error || !$this->level || !($error['type'] & (E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_PARSE))) {
             return;
         }
 
         if (isset(self::$loggers['emergency'])) {
             $fatal = array(
-                'type' => $type,
+                'type' => $error['type'],
                 'file' => $error['file'],
                 'line' => $error['line'],
             );
 
-            self::$loggers['emergency']->emerg($error['message'], $fatal);
+            self::$loggers['emergency']->emergency($error['message'], $fatal);
         }
 
-        if (!$this->displayErrors) {
-            return;
+        if ($this->displayErrors && $exceptionHandler) {
+            $this->handleFatalError($exceptionHandler, $error);
+        }
+    }
+
+    /**
+     * Gets the fatal error handlers.
+     *
+     * Override this method if you want to define more fatal error handlers.
+     *
+     * @return FatalErrorHandlerInterface[] An array of FatalErrorHandlerInterface
+     */
+    protected function getFatalErrorHandlers()
+    {
+        return array(
+            new UndefinedFunctionFatalErrorHandler(),
+            new UndefinedMethodFatalErrorHandler(),
+            new ClassNotFoundFatalErrorHandler(),
+        );
+    }
+
+    private function handleFatalError($exceptionHandler, array $error)
+    {
+        // Let PHP handle any further error
+        set_error_handler('var_dump', 0);
+        ini_set('display_errors', 1);
+
+        $level = isset($this->levels[$error['type']]) ? $this->levels[$error['type']] : $error['type'];
+        $message = sprintf('%s: %s in %s line %d', $level, $error['message'], $error['file'], $error['line']);
+        if (0 === strpos($error['message'], 'Allowed memory') || 0 === strpos($error['message'], 'Out of memory')) {
+            $exception = new OutOfMemoryException($message, 0, $error['type'], $error['file'], $error['line'], 3, false);
+        } else {
+            $exception = new FatalErrorException($message, 0, $error['type'], $error['file'], $error['line'], 3, true);
+
+            foreach ($this->getFatalErrorHandlers() as $handler) {
+                if ($e = $handler->handleError($error, $exception)) {
+                    $exception = $e;
+                    break;
+                }
+            }
         }
 
-        // get current exception handler
-        $exceptionHandler = set_exception_handler(function () {});
-        restore_exception_handler();
-
-        if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
-            $level = isset($this->levels[$type]) ? $this->levels[$type] : $type;
-            $message = sprintf('%s: %s in %s line %d', $level, $error['message'], $error['file'], $error['line']);
-            $exception = new FatalErrorException($message, 0, $type, $error['file'], $error['line']);
-            $exceptionHandler[0]->handle($exception);
+        try {
+            call_user_func($exceptionHandler, $exception);
+        } catch (\Exception $e) {
+            // The handler failed. Let PHP handle that now.
+            throw $exception;
+        }
+    }
+}
+
+/**
+ * Private class used to work around https://bugs.php.net/54275
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class ErrorHandlerCanary
+{
+    private static $displayErrors = null;
+
+    public function __construct()
+    {
+        if (null === self::$displayErrors) {
+            self::$displayErrors = ini_set('display_errors', 1);
+        }
+    }
+
+    public function __destruct()
+    {
+        if (null !== self::$displayErrors) {
+            ini_set('display_errors', self::$displayErrors);
+            self::$displayErrors = null;
         }
     }
 }

Exception/ClassNotFoundException.php

@@ -0,0 +1,33 @@
+<?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\Debug\Exception;
+
+/**
+ * Class (or Trait or Interface) Not Found Exception.
+ *
+ * @author Konstanton Myakshin <koc-dp@yandex.ru>
+ */
+class ClassNotFoundException extends FatalErrorException
+{
+    public function __construct($message, \ErrorException $previous)
+    {
+        parent::__construct(
+            $message,
+            $previous->getCode(),
+            $previous->getSeverity(),
+            $previous->getFile(),
+            $previous->getLine(),
+            $previous->getPrevious()
+        );
+        $this->setTrace($previous->getTrace());
+    }
+}

Exception/DummyException.php

@@ -12,9 +12,9 @@
 namespace Symfony\Component\Debug\Exception;
 
 /**
- * Used to stop execution of a PHP script after handling a fatal error.
- *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since version 2.5, to be removed in 3.0.
  */
 class DummyException extends \ErrorException
 {

Exception/FatalErrorException.php

@@ -9,28 +9,63 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\HttpKernel\Exception;
+namespace Symfony\Component\Debug\Exception;
 
 /**
  * Fatal Error Exception.
  *
+ * @author Fabien Potencier <fabien@symfony.com>
  * @author Konstanton Myakshin <koc-dp@yandex.ru>
- *
- * @deprecated Deprecated in 2.3, to be removed in 3.0. Use the same class from the Debug component instead.
+ * @author Nicolas Grekas <p@tchwork.com>
  */
 class FatalErrorException extends \ErrorException
 {
-}
-
-namespace Symfony\Component\Debug\Exception;
-
-use Symfony\Component\HttpKernel\Exception\FatalErrorException as LegacyFatalErrorException;
-
-/**
- * Fatal Error Exception.
- *
- * @author Konstanton Myakshin <koc-dp@yandex.ru>
- */
-class FatalErrorException extends LegacyFatalErrorException
-{
+    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true)
+    {
+        parent::__construct($message, $code, $severity, $filename, $lineno);
+
+        if (null !== $traceOffset) {
+            if (function_exists('xdebug_get_function_stack')) {
+                $trace = xdebug_get_function_stack();
+                if (0 < $traceOffset) {
+                    array_splice($trace, -$traceOffset);
+                }
+
+                foreach ($trace as &$frame) {
+                    if (!isset($frame['type'])) {
+                        //  XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
+                        if (isset($frame['class'])) {
+                            $frame['type'] = '::';
+                        }
+                    } elseif ('dynamic' === $frame['type']) {
+                        $frame['type'] = '->';
+                    } elseif ('static' === $frame['type']) {
+                        $frame['type'] = '::';
+                    }
+
+                    // XDebug also has a different name for the parameters array
+                    if (!$traceArgs) {
+                        unset($frame['params'], $frame['args']);
+                    } elseif (isset($frame['params']) && !isset($frame['args'])) {
+                        $frame['args'] = $frame['params'];
+                        unset($frame['params']);
+                    }
+                }
+
+                unset($frame);
+                $trace = array_reverse($trace);
+            } else {
+                $trace = array();
+            }
+
+            $this->setTrace($trace);
+        }
+    }
+
+    protected function setTrace($trace)
+    {
+        $traceReflector = new \ReflectionProperty('Exception', 'trace');
+        $traceReflector->setAccessible(true);
+        $traceReflector->setValue($this, $trace);
+    }
 }

Exception/FlattenException.php

@@ -9,49 +9,8 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\HttpKernel\Exception;
-
-use Symfony\Component\Debug\Exception\FlattenException as DebugFlattenException;
-
-/**
- * FlattenException wraps a PHP Exception to be able to serialize it.
- *
- * Basically, this class removes all objects from the trace.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @deprecated Deprecated in 2.3, to be removed in 3.0. Use the same class from the Debug component instead.
- */
-class FlattenException
-{
-    private $handler;
-
-    public static function __callStatic($method, $args)
-    {
-        if (!method_exists('Symfony\Component\Debug\Exception\FlattenException', $method)) {
-            throw new \BadMethodCallException(sprintf('Call to undefined method %s::%s()', get_called_class(), $method));
-        }
-
-        return call_user_func_array(array('Symfony\Component\Debug\Exception\FlattenException', $method), $args);
-    }
-
-    public function __call($method, $args)
-    {
-        if (!isset($this->handler)) {
-            $this->handler = new DebugFlattenException();
-        }
-
-        if (!method_exists($this->handler, $method)) {
-            throw new \BadMethodCallException(sprintf('Call to undefined method %s::%s()', get_class($this), $method));
-        }
-
-        return call_user_func_array(array($this->handler, $method), $args);
-    }
-}
-
 namespace Symfony\Component\Debug\Exception;
 
-use Symfony\Component\HttpKernel\Exception\FlattenException as LegacyFlattenException;
 use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
 
 /**
@@ -61,7 +20,7 @@ use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class FlattenException extends LegacyFlattenException
+class FlattenException
 {
     private $message;
     private $code;
@@ -107,8 +66,8 @@ class FlattenException extends LegacyFlattenException
         foreach (array_merge(array($this), $this->getAllPrevious()) as $exception) {
             $exceptions[] = array(
                 'message' => $exception->getMessage(),
-                'class' => $exception->getClass(),
-                'trace' => $exception->getTrace(),
+                'class'   => $exception->getClass(),
+                'trace'   => $exception->getTrace(),
             );
         }
 
@@ -213,50 +172,21 @@ class FlattenException extends LegacyFlattenException
 
     public function setTraceFromException(\Exception $exception)
     {
-        $trace = $exception->getTrace();
-
-        if ($exception instanceof FatalErrorException) {
-            if (function_exists('xdebug_get_function_stack')) {
-                $trace = array_slice(array_reverse(xdebug_get_function_stack()), 4);
-
-                foreach ($trace as $i => $frame) {
-                    //  XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
-                    if (!isset($frame['type'])) {
-                        $trace[$i]['type'] = '??';
-                    }
-
-                    if ('dynamic' === $trace[$i]['type']) {
-                        $trace[$i]['type'] = '->';
-                    } elseif ('static' === $trace[$i]['type']) {
-                        $trace[$i]['type'] = '::';
-                    }
-
-                    // XDebug also has a different name for the parameters array
-                    if (isset($frame['params']) && !isset($frame['args'])) {
-                        $trace[$i]['args'] = $frame['params'];
-                        unset($trace[$i]['params']);
-                    }
-                }
-            } else {
-                $trace = array_slice(array_reverse($trace), 1);
-            }
-        }
-
-        $this->setTrace($trace, $exception->getFile(), $exception->getLine());
+        $this->setTrace($exception->getTrace(), $exception->getFile(), $exception->getLine());
     }
 
     public function setTrace($trace, $file, $line)
     {
         $this->trace = array();
         $this->trace[] = array(
-            'namespace' => '',
+            'namespace'   => '',
             'short_class' => '',
-            'class' => '',
-            'type' => '',
-            'function' => '',
-            'file' => $file,
-            'line' => $line,
-            'args' => array(),
+            'class'       => '',
+            'type'        => '',
+            'function'    => '',
+            'file'        => $file,
+            'line'        => $line,
+            'args'        => array(),
         );
         foreach ($trace as $entry) {
             $class = '';
@@ -268,32 +198,29 @@ class FlattenException extends LegacyFlattenException
             }
 
             $this->trace[] = array(
-                'namespace' => $namespace,
+                'namespace'   => $namespace,
                 'short_class' => $class,
-                'class' => isset($entry['class']) ? $entry['class'] : '',
-                'type' => isset($entry['type']) ? $entry['type'] : '',
-                'function' => isset($entry['function']) ? $entry['function'] : null,
-                'file' => isset($entry['file']) ? $entry['file'] : null,
-                'line' => isset($entry['line']) ? $entry['line'] : null,
-                'args' => isset($entry['args']) ? $this->flattenArgs($entry['args']) : array(),
+                'class'       => isset($entry['class']) ? $entry['class'] : '',
+                'type'        => isset($entry['type']) ? $entry['type'] : '',
+                'function'    => isset($entry['function']) ? $entry['function'] : null,
+                'file'        => isset($entry['file']) ? $entry['file'] : null,
+                'line'        => isset($entry['line']) ? $entry['line'] : null,
+                'args'        => isset($entry['args']) ? $this->flattenArgs($entry['args']) : array(),
             );
         }
     }
 
-    private function flattenArgs($args, $level = 0, &$count = 0)
+    private function flattenArgs($args, $level = 0)
     {
         $result = array();
         foreach ($args as $key => $value) {
-            if (++$count > 1e4) {
-                return array('array', '*SKIPPED over 10000 entries*');
-            }
             if (is_object($value)) {
                 $result[$key] = array('object', get_class($value));
             } elseif (is_array($value)) {
                 if ($level > 10) {
                     $result[$key] = array('array', '*DEEP NESTED ARRAY*');
                 } else {
-                    $result[$key] = array('array', $this->flattenArgs($value, $level + 1, $count));
+                    $result[$key] = array('array', $this->flattenArgs($value, $level + 1));
                 }
             } elseif (null === $value) {
                 $result[$key] = array('null', null);

Exception/OutOfMemoryException.php

@@ -0,0 +1,21 @@
+<?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\Debug\Exception;
+
+/**
+ * Out of memory exception.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class OutOfMemoryException extends FatalErrorException
+{
+}

Exception/UndefinedFunctionException.php

@@ -0,0 +1,33 @@
+<?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\Debug\Exception;
+
+/**
+ * Undefined Function Exception.
+ *
+ * @author Konstanton Myakshin <koc-dp@yandex.ru>
+ */
+class UndefinedFunctionException extends FatalErrorException
+{
+    public function __construct($message, \ErrorException $previous)
+    {
+        parent::__construct(
+            $message,
+            $previous->getCode(),
+            $previous->getSeverity(),
+            $previous->getFile(),
+            $previous->getLine(),
+            $previous->getPrevious()
+        );
+        $this->setTrace($previous->getTrace());
+    }
+}

Exception/UndefinedMethodException.php

@@ -0,0 +1,33 @@
+<?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\Debug\Exception;
+
+/**
+ * Undefined Method Exception.
+ *
+ * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ */
+class UndefinedMethodException extends FatalErrorException
+{
+    public function __construct($message, \ErrorException $previous)
+    {
+        parent::__construct(
+            $message,
+            $previous->getCode(),
+            $previous->getSeverity(),
+            $previous->getFile(),
+            $previous->getLine(),
+            $previous->getPrevious()
+        );
+        $this->setTrace($previous->getTrace());
+    }
+}

ExceptionHandler.php

@@ -13,6 +13,11 @@ namespace Symfony\Component\Debug;
 
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Debug\Exception\FlattenException;
+use Symfony\Component\Debug\Exception\OutOfMemoryException;
+
+if (!defined('ENT_SUBSTITUTE')) {
+    define('ENT_SUBSTITUTE', 8);
+}
 
 /**
  * ExceptionHandler converts an exception to a Response object.
@@ -24,11 +29,15 @@ use Symfony\Component\Debug\Exception\FlattenException;
  * available, the Response content is always HTML.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ * @author Nicolas Grekas <p@tchwork.com>
  */
 class ExceptionHandler
 {
     private $debug;
     private $charset;
+    private $handler;
+    private $caughtBuffer;
+    private $caughtLength;
 
     public function __construct($debug = true, $charset = 'UTF-8')
     {
@@ -39,7 +48,7 @@ class ExceptionHandler
     /**
      * Registers the exception handler.
      *
-     * @param bool $debug
+     * @param bool    $debug
      *
      * @return ExceptionHandler The registered exception handler
      */
@@ -52,6 +61,65 @@ class ExceptionHandler
         return $handler;
     }
 
+    /**
+     * Sets a user exception handler.
+     *
+     * @param callable $handler An handler that will be called on Exception
+     *
+     * @return callable|null The previous exception handler if any
+     */
+    public function setHandler($handler)
+    {
+        if (null !== $handler && !is_callable($handler)) {
+            throw new \LogicException('The exception handler must be a valid PHP callable.');
+        }
+        $old = $this->handler;
+        $this->handler = $handler;
+
+        return $old;
+    }
+
+    /**
+     * Sends a response for the given Exception.
+     *
+     * To be as fail-safe as possible, the exception is first handled
+     * by our simple exception handler, then by the user exception handler.
+     * The latter takes precedence and any output from the former is cancelled,
+     * if and only if nothing bad happens in this handling path.
+     */
+    public function handle(\Exception $exception)
+    {
+        if (null === $this->handler || $exception instanceof OutOfMemoryException) {
+            $this->failSafeHandle($exception);
+
+            return;
+        }
+
+        $caughtLength = $this->caughtLength = 0;
+
+        ob_start(array($this, 'catchOutput'));
+        $this->failSafeHandle($exception);
+        while (null === $this->caughtBuffer && ob_end_flush()) {
+            // Empty loop, everything is in the condition
+        }
+        if (isset($this->caughtBuffer[0])) {
+            ob_start(array($this, 'cleanOutput'));
+            echo $this->caughtBuffer;
+            $caughtLength = ob_get_length();
+        }
+        $this->caughtBuffer = null;
+
+        try {
+            call_user_func($this->handler, $exception);
+            $this->caughtLength = $caughtLength;
+        } catch (\Exception $e) {
+            if (!$caughtLength) {
+                // All handlers failed. Let PHP handle that now.
+                throw $exception;
+            }
+        }
+    }
+
     /**
      * Sends a response for the given Exception.
      *
@@ -59,15 +127,15 @@ class ExceptionHandler
      * this method will use it to create and send the response. If not,
      * it will fallback to plain PHP functions.
      *
-     * @param \Exception $exception An \Exception instance
-     *
-     * @see sendPhpResponse()
-     * @see createResponse()
+     * @see sendPhpResponse
+     * @see createResponse
      */
-    public function handle(\Exception $exception)
+    private function failSafeHandle(\Exception $exception)
     {
-        if (class_exists('Symfony\Component\HttpFoundation\Response')) {
-            $this->createResponse($exception)->send();
+        if (class_exists('Symfony\Component\HttpFoundation\Response', false)) {
+            $response = $this->createResponse($exception);
+            $response->sendHeaders();
+            $response->sendContent();
         } else {
             $this->sendPhpResponse($exception);
         }
@@ -92,7 +160,6 @@ class ExceptionHandler
             foreach ($exception->getHeaders() as $name => $value) {
                 header($name.': '.$value, false);
             }
-            header('Content-Type: text/html; charset='.$this->charset);
         }
 
         echo $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
@@ -111,7 +178,7 @@ class ExceptionHandler
             $exception = FlattenException::create($exception);
         }
 
-        return Response::create($this->decorate($this->getContent($exception), $this->getStylesheet($exception)), $exception->getStatusCode(), $exception->getHeaders())->setCharset($this->charset);
+        return new Response($this->decorate($this->getContent($exception), $this->getStylesheet($exception)), $exception->getStatusCode(), $exception->getHeaders());
     }
 
     /**
@@ -132,7 +199,6 @@ class ExceptionHandler
         }
 
         $content = '';
-        $flags = PHP_VERSION_ID >= 50400 ? ENT_QUOTES | ENT_SUBSTITUTE : ENT_QUOTES;
         if ($this->debug) {
             try {
                 $count = count($exception->getAllPrevious());
@@ -140,8 +206,8 @@ class ExceptionHandler
                 foreach ($exception->toArray() as $position => $e) {
                     $ind = $count - $position + 1;
                     $class = $this->abbrClass($e['class']);
-                    $message = nl2br(htmlspecialchars($e['message'], $flags, $this->charset));
-                    $content .= sprintf(<<<'EOF'
+                    $message = nl2br($e['message']);
+                    $content .= sprintf(<<<EOF
                         <div class="block_exception clear_fix">
                             <h2><span>%d/%d</span> %s: %s</h2>
                         </div>
@@ -157,11 +223,10 @@ EOF
                         }
                         if (isset($trace['file']) && isset($trace['line'])) {
                             if ($linkFormat = ini_get('xdebug.file_link_format')) {
-                                $link = strtr($linkFormat, array('%f' => $trace['file'], '%l' => $trace['line']));
-                                $link = htmlspecialchars($link, $flags, $this->charset);
-                                $content .= sprintf(' in <a href="%s" title="Go to source">%s line %d</a>', $link, htmlspecialchars($trace['file'], $flags, $this->charset), $trace['line']);
+                                $link = str_replace(array('%f', '%l'), array($trace['file'], $trace['line']), $linkFormat);
+                                $content .= sprintf(' in <a href="%s" title="Go to source">%s line %s</a>', $link, $trace['file'], $trace['line']);
                             } else {
-                                $content .= sprintf(' in %s line %d', htmlspecialchars($trace['file'], $flags, $this->charset), $trace['line']);
+                                $content .= sprintf(' in %s line %s', $trace['file'], $trace['line']);
                             }
                         }
                         $content .= "</li>\n";
@@ -172,7 +237,7 @@ EOF
             } catch (\Exception $e) {
                 // something nasty happened and we cannot throw an exception anymore
                 if ($this->debug) {
-                    $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($e), htmlspecialchars($e->getMessage(), $flags, $this->charset));
+                    $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($exception), $exception->getMessage());
                 } else {
                     $title = 'Whoops, looks like something went wrong.';
                 }
@@ -196,7 +261,7 @@ EOF;
      */
     public function getStylesheet(FlattenException $exception)
     {
-        return <<<'EOF'
+        return <<<EOF
             .sf-reset { font: 11px Verdana, Arial, sans-serif; color: #333 }
             .sf-reset .clear { clear:both; height:0; font-size:0; line-height:0; }
             .sf-reset .clear_fix:after { display:block; height:0; clear:both; visibility:hidden; }
@@ -256,7 +321,7 @@ EOF;
 <!DOCTYPE html>
 <html>
     <head>
-        <meta charset="UTF-8" />
+        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
         <meta name="robots" content="noindex,nofollow" />
         <style>
             /* Copyright (c) 2010, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.com/yui/license.html */
@@ -279,7 +344,7 @@ EOF;
     {
         $parts = explode('\\', $class);
 
-        return sprintf('<abbr title="%s">%s</abbr>', $class, array_pop($parts));
+        return sprintf("<abbr title=\"%s\">%s</abbr>", $class, array_pop($parts));
     }
 
     /**
@@ -291,19 +356,14 @@ EOF;
      */
     private function formatArgs(array $args)
     {
-        if (PHP_VERSION_ID >= 50400) {
-            $flags = ENT_QUOTES | ENT_SUBSTITUTE;
-        } else {
-            $flags = ENT_QUOTES;
-        }
         $result = array();
         foreach ($args as $key => $item) {
             if ('object' === $item[0]) {
-                $formattedValue = sprintf('<em>object</em>(%s)', $this->abbrClass($item[1]));
+                $formattedValue = sprintf("<em>object</em>(%s)", $this->abbrClass($item[1]));
             } elseif ('array' === $item[0]) {
-                $formattedValue = sprintf('<em>array</em>(%s)', is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
-            } elseif ('string' === $item[0]) {
-                $formattedValue = sprintf("'%s'", htmlspecialchars($item[1], $flags, $this->charset));
+                $formattedValue = sprintf("<em>array</em>(%s)", is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
+            } elseif ('string'  === $item[0]) {
+                $formattedValue = sprintf("'%s'", htmlspecialchars($item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset));
             } elseif ('null' === $item[0]) {
                 $formattedValue = '<em>null</em>';
             } elseif ('boolean' === $item[0]) {
@@ -311,7 +371,7 @@ EOF;
             } elseif ('resource' === $item[0]) {
                 $formattedValue = '<em>resource</em>';
             } else {
-                $formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], $flags, $this->charset), true));
+                $formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset), true));
             }
 
             $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
@@ -319,4 +379,30 @@ EOF;
 
         return implode(', ', $result);
     }
+
+    /**
+     * @internal
+     */
+    public function catchOutput($buffer)
+    {
+        $this->caughtBuffer = $buffer;
+
+        return '';
+    }
+
+    /**
+     * @internal
+     */
+    public function cleanOutput($buffer)
+    {
+        if ($this->caughtLength) {
+            // use substr_replace() instead of substr() for mbstring overloading resistance
+            $cleanBuffer = substr_replace($buffer, '', 0, $this->caughtLength);
+            if (isset($cleanBuffer[0])) {
+                $buffer = $cleanBuffer;
+            }
+        }
+
+        return $buffer;
+    }
 }

FatalErrorHandler/ClassNotFoundFatalErrorHandler.php

@@ -0,0 +1,190 @@
+<?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\Debug\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\ClassNotFoundException;
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\DebugClassLoader;
+use Composer\Autoload\ClassLoader as ComposerClassLoader;
+use Symfony\Component\ClassLoader as SymfonyClassLoader;
+
+/**
+ * ErrorHandler for classes that do not exist.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function handleError(array $error, FatalErrorException $exception)
+    {
+        $messageLen = strlen($error['message']);
+        $notFoundSuffix = '\' not found';
+        $notFoundSuffixLen = strlen($notFoundSuffix);
+        if ($notFoundSuffixLen > $messageLen) {
+            return;
+        }
+
+        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
+            return;
+        }
+
+        foreach (array('class', 'interface', 'trait') as $typeName) {
+            $prefix = ucfirst($typeName).' \'';
+            $prefixLen = strlen($prefix);
+            if (0 !== strpos($error['message'], $prefix)) {
+                continue;
+            }
+
+            $fullyQualifiedClassName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
+            if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
+                $className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
+                $namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
+                $message = sprintf(
+                    'Attempted to load %s "%s" from namespace "%s" in %s line %d. Do you need to "use" it from another namespace?',
+                    $typeName,
+                    $className,
+                    $namespacePrefix,
+                    $error['file'],
+                    $error['line']
+                );
+            } else {
+                $className = $fullyQualifiedClassName;
+                $message = sprintf(
+                    'Attempted to load %s "%s" from the global namespace in %s line %d. Did you forget a use statement for this %s?',
+                    $typeName,
+                    $className,
+                    $error['file'],
+                    $error['line'],
+                    $typeName
+                );
+            }
+
+            if ($classes = $this->getClassCandidates($className)) {
+                $message .= sprintf(' Perhaps you need to add a use statement for one of the following: %s.', implode(', ', $classes));
+            }
+
+            return new ClassNotFoundException($message, $exception);
+        }
+    }
+
+    /**
+     * Tries to guess the full namespace for a given class name.
+     *
+     * By default, it looks for PSR-0 classes registered via a Symfony or a Composer
+     * autoloader (that should cover all common cases).
+     *
+     * @param string $class A class name (without its namespace)
+     *
+     * @return array An array of possible fully qualified class names
+     */
+    private function getClassCandidates($class)
+    {
+        if (!is_array($functions = spl_autoload_functions())) {
+            return array();
+        }
+
+        // find Symfony and Composer autoloaders
+        $classes = array();
+        foreach ($functions as $function) {
+            if (!is_array($function)) {
+                continue;
+            }
+
+            // get class loaders wrapped by DebugClassLoader
+            if ($function[0] instanceof DebugClassLoader) {
+                $function = $function[0]->getClassLoader();
+
+                // Since 2.5, returning an object from DebugClassLoader::getClassLoader() is @deprecated
+                if (is_object($function)) {
+                    $function = array($function);
+                }
+
+                if (!is_array($function)) {
+                    continue;
+                }
+            }
+
+            if ($function[0] instanceof ComposerClassLoader || $function[0] instanceof SymfonyClassLoader) {
+                foreach ($function[0]->getPrefixes() as $paths) {
+                    foreach ($paths as $path) {
+                        $classes = array_merge($classes, $this->findClassInPath($path, $class));
+                    }
+                }
+            }
+        }
+
+        return $classes;
+    }
+
+    /**
+     * @param string $path
+     * @param string $class
+     *
+     * @return array
+     */
+    private function findClassInPath($path, $class)
+    {
+        if (!$path = realpath($path)) {
+            return array();
+        }
+
+        $classes = array();
+        $filename = $class.'.php';
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+            if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName())) {
+                $classes[] = $class;
+            }
+        }
+
+        return $classes;
+    }
+
+    /**
+     * @param string $path
+     * @param string $file
+     *
+     * @return string|null
+     */
+    private function convertFileToClass($path, $file)
+    {
+        $namespacedClass = str_replace(array($path.DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file);
+        $pearClass = str_replace('\\', '_', $namespacedClass);
+
+        // We cannot use the autoloader here as most of them use require; but if the class
+        // is not found, the new autoloader call will require the file again leading to a
+        // "cannot redeclare class" error.
+        if (!$this->classExists($namespacedClass) && !$this->classExists($pearClass)) {
+            require_once $file;
+        }
+
+        if ($this->classExists($namespacedClass)) {
+            return $namespacedClass;
+        }
+
+        if ($this->classExists($pearClass)) {
+            return $pearClass;
+        }
+    }
+
+    /**
+     * @param string $class
+     *
+     * @return bool
+     */
+    private function classExists($class)
+    {
+        return class_exists($class, false) || interface_exists($class, false) || (function_exists('trait_exists') && trait_exists($class, false));
+    }
+}

FatalErrorHandler/FatalErrorHandlerInterface.php

@@ -0,0 +1,32 @@
+<?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\Debug\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\FatalErrorException;
+
+/**
+ * Attempts to convert fatal errors to exceptions.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface FatalErrorHandlerInterface
+{
+    /**
+     * Attempts to convert an error into an exception.
+     *
+     * @param array               $error     An array as returned by error_get_last()
+     * @param FatalErrorException $exception A FatalErrorException instance
+     *
+     * @return FatalErrorException|null A FatalErrorException instance if the class is able to convert the error, null otherwise
+     */
+    public function handleError(array $error, FatalErrorException $exception);
+}

FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php

@@ -0,0 +1,91 @@
+<?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\Debug\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\UndefinedFunctionException;
+use Symfony\Component\Debug\Exception\FatalErrorException;
+
+/**
+ * ErrorHandler for undefined functions.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function handleError(array $error, FatalErrorException $exception)
+    {
+        $messageLen = strlen($error['message']);
+        $notFoundSuffix = '()';
+        $notFoundSuffixLen = strlen($notFoundSuffix);
+        if ($notFoundSuffixLen > $messageLen) {
+            return;
+        }
+
+        if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
+            return;
+        }
+
+        $prefix = 'Call to undefined function ';
+        $prefixLen = strlen($prefix);
+        if (0 !== strpos($error['message'], $prefix)) {
+            return;
+        }
+
+        $fullyQualifiedFunctionName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
+        if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedFunctionName, '\\')) {
+            $functionName = substr($fullyQualifiedFunctionName, $namespaceSeparatorIndex + 1);
+            $namespacePrefix = substr($fullyQualifiedFunctionName, 0, $namespaceSeparatorIndex);
+            $message = sprintf(
+                'Attempted to call function "%s" from namespace "%s" in %s line %d.',
+                $functionName,
+                $namespacePrefix,
+                $error['file'],
+                $error['line']
+            );
+        } else {
+            $functionName = $fullyQualifiedFunctionName;
+            $message = sprintf(
+                'Attempted to call function "%s" from the global namespace in %s line %d.',
+                $functionName,
+                $error['file'],
+                $error['line']
+            );
+        }
+
+        $candidates = array();
+        foreach (get_defined_functions() as $type => $definedFunctionNames) {
+            foreach ($definedFunctionNames as $definedFunctionName) {
+                if (false !== $namespaceSeparatorIndex = strrpos($definedFunctionName, '\\')) {
+                    $definedFunctionNameBasename = substr($definedFunctionName, $namespaceSeparatorIndex + 1);
+                } else {
+                    $definedFunctionNameBasename = $definedFunctionName;
+                }
+
+                if ($definedFunctionNameBasename === $functionName) {
+                    $candidates[] = '\\'.$definedFunctionName;
+                }
+            }
+        }
+
+        if ($candidates) {
+            sort($candidates);
+            $message .= ' Did you mean to call: '.implode(', ', array_map(function ($val) {
+                return '"'.$val.'"';
+            }, $candidates)).'?';
+        }
+
+        return new UndefinedFunctionException($message, $exception);
+    }
+}

FatalErrorHandler/UndefinedMethodFatalErrorHandler.php

@@ -0,0 +1,54 @@
+<?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\Debug\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\Exception\UndefinedMethodException;
+
+/**
+ * ErrorHandler for undefined methods.
+ *
+ * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ */
+class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function handleError(array $error, FatalErrorException $exception)
+    {
+        preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $error['message'], $matches);
+        if (!$matches) {
+            return;
+        }
+
+        $className = $matches[1];
+        $methodName = $matches[2];
+
+        $message = sprintf('Attempted to call method "%s" on class "%s" in %s line %d.', $methodName, $className, $error['file'], $error['line']);
+
+        $candidates = array();
+        foreach (get_class_methods($className) as $definedMethodName) {
+            $lev = levenshtein($methodName, $definedMethodName);
+            if ($lev <= strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
+                $candidates[] = $definedMethodName;
+            }
+        }
+
+        if ($candidates) {
+            sort($candidates);
+            $message .= sprintf(' Did you mean to call: "%s"?', implode('", "', $candidates));
+        }
+
+        return new UndefinedMethodException($message, $exception);
+    }
+}

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2004-2016 Fabien Potencier
+Copyright (c) 2004-2014 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -6,27 +6,23 @@ Debug provides tools to make debugging easier.
 Enabling all debug tools is as easy as calling the `enable()` method on the
 main `Debug` class:
 
-```php
-use Symfony\Component\Debug\Debug;
+    use Symfony\Component\Debug\Debug;
 
-Debug::enable();
-```
+    Debug::enable();
 
 You can also use the tools individually:
 
-```php
-use Symfony\Component\Debug\ErrorHandler;
-use Symfony\Component\Debug\ExceptionHandler;
+    use Symfony\Component\Debug\ErrorHandler;
+    use Symfony\Component\Debug\ExceptionHandler;
 
-error_reporting(-1);
+    error_reporting(-1);
 
-ErrorHandler::register($errorReportingLevel);
-if ('cli' !== php_sapi_name()) {
-    ExceptionHandler::register();
-} elseif (!ini_get('log_errors') || ini_get('error_log')) {
-    ini_set('display_errors', 1);
-}
-```
+    ErrorHandler::register($errorReportingLevel);
+    if ('cli' !== php_sapi_name()) {
+        ExceptionHandler::register();
+    } elseif (!ini_get('log_errors') || ini_get('error_log')) {
+        ini_set('display_errors', 1);
+    }
 
 Note that the `Debug::enable()` call also registers the debug class loader
 from the Symfony ClassLoader component when available.
@@ -40,5 +36,5 @@ Resources
 You can run the unit tests with the following command:
 
     $ cd path/to/Symfony/Component/Debug/
-    $ composer install
+    $ composer.phar install --dev
     $ phpunit

Tests/DebugClassLoaderTest.php

@@ -0,0 +1,190 @@
+<?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\Debug\Tests;
+
+use Symfony\Component\Debug\DebugClassLoader;
+use Symfony\Component\Debug\ErrorHandler;
+use Symfony\Component\Debug\Exception\ContextErrorException;
+
+class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var int Error reporting level before running tests.
+     */
+    private $errorReporting;
+
+    private $loader;
+
+    protected function setUp()
+    {
+        $this->errorReporting = error_reporting(E_ALL | E_STRICT);
+        $this->loader = new ClassLoader();
+        spl_autoload_register(array($this->loader, 'loadClass'), true, true);
+        DebugClassLoader::enable();
+    }
+
+    protected function tearDown()
+    {
+        DebugClassLoader::disable();
+        spl_autoload_unregister(array($this->loader, 'loadClass'));
+        error_reporting($this->errorReporting);
+    }
+
+    public function testIdempotence()
+    {
+        DebugClassLoader::enable();
+
+        $functions = spl_autoload_functions();
+        foreach ($functions as $function) {
+            if (is_array($function) && $function[0] instanceof DebugClassLoader) {
+                $reflClass = new \ReflectionClass($function[0]);
+                $reflProp = $reflClass->getProperty('classLoader');
+                $reflProp->setAccessible(true);
+
+                $this->assertNotInstanceOf('Symfony\Component\Debug\DebugClassLoader', $reflProp->getValue($function[0]));
+
+                return;
+            }
+        }
+
+        $this->fail('DebugClassLoader did not register');
+    }
+
+    public function testUnsilencing()
+    {
+        ob_start();
+        $bak = array(
+            ini_set('log_errors', 0),
+            ini_set('display_errors', 1),
+        );
+
+        // See below: this will fail with parse error
+        // but this should not be @-silenced.
+        @class_exists(__NAMESPACE__.'\TestingUnsilencing', true);
+
+        ini_set('log_errors', $bak[0]);
+        ini_set('display_errors', $bak[1]);
+        $output = ob_get_clean();
+
+        $this->assertStringMatchesFormat('%aParse error%a', $output);
+    }
+
+    public function testStacking()
+    {
+        // the ContextErrorException must not be loaded to test the workaround
+        // for https://bugs.php.net/65322.
+        if (class_exists('Symfony\Component\Debug\Exception\ContextErrorException', false)) {
+            $this->markTestSkipped('The ContextErrorException class is already loaded.');
+        }
+
+        ErrorHandler::register();
+
+        try {
+            // Trigger autoloading + E_STRICT at compile time
+            // which in turn triggers $errorHandler->handle()
+            // that again triggers autoloading for ContextErrorException.
+            // Error stacking works around the bug above and everything is fine.
+
+            eval('
+                namespace '.__NAMESPACE__.';
+                class ChildTestingStacking extends TestingStacking { function foo($bar) {} }
+            ');
+            $this->fail('ContextErrorException expected');
+        } catch (\ErrorException $exception) {
+            // if an exception is thrown, the test passed
+            restore_error_handler();
+            restore_exception_handler();
+            $this->assertEquals(E_STRICT, $exception->getSeverity());
+            $this->assertStringStartsWith(__FILE__, $exception->getFile());
+            $this->assertRegexp('/^Runtime Notice: Declaration/', $exception->getMessage());
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    /**
+     * @expectedException \RuntimeException
+     */
+    public function testNameCaseMismatch()
+    {
+        class_exists(__NAMESPACE__.'\TestingCaseMismatch', true);
+    }
+
+    /**
+     * @expectedException \RuntimeException
+     */
+    public function testFileCaseMismatch()
+    {
+        if (!file_exists(__DIR__.'/Fixtures/CaseMismatch.php')) {
+            $this->markTestSkipped('Can only be run on case insensitive filesystems');
+        }
+
+        class_exists(__NAMESPACE__.'\Fixtures\CaseMismatch', true);
+    }
+
+    /**
+     * @expectedException \RuntimeException
+     */
+    public function testPsr4CaseMismatch()
+    {
+        class_exists(__NAMESPACE__.'\Fixtures\Psr4CaseMismatch', true);
+    }
+
+    public function testNotPsr0()
+    {
+        $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\NotPSR0', true));
+    }
+
+    public function testNotPsr0Bis()
+    {
+        $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\NotPSR0bis', true));
+    }
+
+    public function testClassAlias()
+    {
+        $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\ClassAlias', true));
+    }
+}
+
+class ClassLoader
+{
+    public function loadClass($class)
+    {
+    }
+
+    public function getClassMap()
+    {
+        return array(__NAMESPACE__.'\Fixtures\NotPSR0bis' => __DIR__.'/Fixtures/notPsr0Bis.php');
+    }
+
+    public function findFile($class)
+    {
+        if (__NAMESPACE__.'\TestingUnsilencing' === $class) {
+            eval('-- parse error --');
+        } elseif (__NAMESPACE__.'\TestingStacking' === $class) {
+            eval('namespace '.__NAMESPACE__.'; class TestingStacking { function foo() {} }');
+        } elseif (__NAMESPACE__.'\TestingCaseMismatch' === $class) {
+            eval('namespace '.__NAMESPACE__.'; class TestingCaseMisMatch {}');
+        } elseif (__NAMESPACE__.'\Fixtures\CaseMismatch' === $class) {
+            return __DIR__.'/Fixtures/CaseMismatch.php';
+        } elseif (__NAMESPACE__.'\Fixtures\Psr4CaseMismatch' === $class) {
+            return __DIR__.'/Fixtures/psr4/Psr4CaseMismatch.php';
+        } elseif (__NAMESPACE__.'\Fixtures\NotPSR0' === $class) {
+            return __DIR__.'/Fixtures/reallyNotPsr0.php';
+        } elseif (__NAMESPACE__.'\Fixtures\NotPSR0bis' === $class) {
+            return __DIR__.'/Fixtures/notPsr0Bis.php';
+        }
+    }
+}

Tests/ErrorHandlerTest.php

@@ -12,10 +12,10 @@
 namespace Symfony\Component\Debug\Tests;
 
 use Symfony\Component\Debug\ErrorHandler;
-use Symfony\Component\Debug\Exception\DummyException;
+use Symfony\Component\Debug\Exception\ContextErrorException;
 
 /**
- * ErrorHandlerTest.
+ * ErrorHandlerTest
  *
  * @author Robert Schönthal <seroscho@googlemail.com>
  */
@@ -26,119 +26,57 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
      */
     protected $errorReporting;
 
-    protected function setUp()
+    /**
+     * @var string Display errors setting before running tests.
+     */
+    protected $displayErrors;
+
+    public function setUp()
     {
         $this->errorReporting = error_reporting(E_ALL | E_STRICT);
-        $this->iniSet('display_errors', '1');
+        $this->displayErrors = ini_get('display_errors');
+        ini_set('display_errors', '1');
     }
 
-    protected function tearDown()
+    public function tearDown()
     {
+        ini_set('display_errors', $this->displayErrors);
         error_reporting($this->errorReporting);
     }
 
-    public function testCompileTimeError()
-    {
-        if (defined('HHVM_VERSION')) {
-            $this->markTestSkipped('HHVM does not trigger strict notices.');
-        }
-
-        // the ContextErrorException must not be loaded to test the workaround
-        // for https://bugs.php.net/bug.php?id=65322.
-        if (class_exists('Symfony\Component\Debug\Exception\ContextErrorException', false)) {
-            $this->markTestSkipped('The ContextErrorException class is already loaded.');
-        }
-
-        $exceptionHandler = $this->getMock('Symfony\Component\Debug\ExceptionHandler', array('handle'));
-
-        // the following code forces some PHPUnit classes to be loaded
-        // so that they will be available in the exception handler
-        // as they won't be autoloaded by PHP
-        class_exists('PHPUnit_Framework_MockObject_Invocation_Object');
-        $this->assertInstanceOf('stdClass', new \stdClass());
-        $this->assertEquals(1, 1);
-        $this->assertStringStartsWith('foo', 'foobar');
-        $this->assertArrayHasKey('bar', array('bar' => 'foo'));
-
-        $that = $this;
-        $exceptionCheck = function ($exception) use ($that) {
-            $that->assertInstanceOf('Symfony\Component\Debug\Exception\ContextErrorException', $exception);
-            $that->assertEquals(2, $exception->getLine());
-            if (PHP_VERSION_ID < 70000) {
-                $that->assertEquals(E_STRICT, $exception->getSeverity());
-                $that->assertStringStartsWith('Runtime Notice: Declaration', $exception->getMessage());
-            } else {
-                $that->assertEquals(E_WARNING, $exception->getSeverity());
-                $that->assertStringStartsWith('Warning: Declaration', $exception->getMessage());
-            }
-            $that->assertArrayHasKey('bar', $exception->getContext());
-        };
-
-        $exceptionHandler->expects($this->once())
-            ->method('handle')
-            ->will($this->returnCallback($exceptionCheck))
-        ;
-
-        ErrorHandler::register();
-        set_exception_handler(array($exceptionHandler, 'handle'));
-
-        // dummy variable to check for in error handler.
-        $bar = 123;
-
-        // trigger compile time error
-        try {
-            eval(<<<'PHP'
-class _BaseCompileTimeError { function foo() {} }
-class _CompileTimeError extends _BaseCompileTimeError { function foo($invalid) {} }
-PHP
-            );
-        } catch (DummyException $e) {
-            // if an exception is thrown, the test passed
-        }
-
-        restore_error_handler();
-        restore_exception_handler();
-    }
-
     public function testNotice()
     {
-        $exceptionHandler = $this->getMock('Symfony\Component\Debug\ExceptionHandler', array('handle'));
-        set_exception_handler(array($exceptionHandler, 'handle'));
-
-        $that = $this;
-        $exceptionCheck = function ($exception) use ($that) {
-            $that->assertInstanceOf('Symfony\Component\Debug\Exception\ContextErrorException', $exception);
-            $that->assertEquals(E_NOTICE, $exception->getSeverity());
-            $that->assertEquals(__LINE__ + 40, $exception->getLine());
-            $that->assertEquals(__FILE__, $exception->getFile());
-            $that->assertRegExp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
-            $that->assertArrayHasKey('foobar', $exception->getContext());
-
-            $trace = $exception->getTrace();
-            $that->assertEquals(__FILE__, $trace[0]['file']);
-            $that->assertEquals('Symfony\Component\Debug\ErrorHandler', $trace[0]['class']);
-            $that->assertEquals('handle', $trace[0]['function']);
-            $that->assertEquals('->', $trace[0]['type']);
-
-            $that->assertEquals(__FILE__, $trace[1]['file']);
-            $that->assertEquals('Symfony\Component\Debug\Tests\ErrorHandlerTest', $trace[1]['class']);
-            $that->assertEquals('triggerNotice', $trace[1]['function']);
-            $that->assertEquals('::', $trace[1]['type']);
-
-            $that->assertEquals('Symfony\Component\Debug\Tests\ErrorHandlerTest', $trace[2]['class']);
-            $that->assertEquals('testNotice', $trace[2]['function']);
-            $that->assertEquals('->', $trace[2]['type']);
-        };
-
-        $exceptionHandler->expects($this->once())
-            ->method('handle')
-            ->will($this->returnCallback($exceptionCheck));
         ErrorHandler::register();
 
         try {
             self::triggerNotice($this);
-        } catch (DummyException $e) {
+            $this->fail('ContextErrorException expected');
+        } catch (ContextErrorException $exception) {
             // if an exception is thrown, the test passed
+            restore_error_handler();
+            $this->assertEquals(E_NOTICE, $exception->getSeverity());
+            $this->assertEquals(__FILE__, $exception->getFile());
+            $this->assertRegexp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
+            $this->assertArrayHasKey('foobar', $exception->getContext());
+
+            $trace = $exception->getTrace();
+            $this->assertEquals(__FILE__, $trace[0]['file']);
+            $this->assertEquals('Symfony\Component\Debug\ErrorHandler', $trace[0]['class']);
+            $this->assertEquals('handle', $trace[0]['function']);
+            $this->assertEquals('->', $trace[0]['type']);
+
+            $this->assertEquals(__FILE__, $trace[1]['file']);
+            $this->assertEquals(__CLASS__, $trace[1]['class']);
+            $this->assertEquals('triggerNotice', $trace[1]['function']);
+            $this->assertEquals('::', $trace[1]['type']);
+
+            $this->assertEquals(__CLASS__, $trace[2]['class']);
+            $this->assertEquals('testNotice', $trace[2]['function']);
+            $this->assertEquals('->', $trace[2]['type']);
+        } catch (\Exception $e) {
+            restore_error_handler();
+
+            throw $e;
         }
 
         restore_error_handler();
@@ -154,71 +92,157 @@ PHP
 
     public function testConstruct()
     {
-        $handler = ErrorHandler::register(3);
+        try {
+            $handler = ErrorHandler::register(3);
 
-        $level = new \ReflectionProperty($handler, 'level');
-        $level->setAccessible(true);
+            $level = new \ReflectionProperty($handler, 'level');
+            $level->setAccessible(true);
 
-        $this->assertEquals(3, $level->getValue($handler));
+            $this->assertEquals(3, $level->getValue($handler));
 
-        restore_error_handler();
+            restore_error_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+
+            throw $e;
+        }
     }
 
     public function testHandle()
     {
-        $handler = ErrorHandler::register(0);
-        $this->assertFalse($handler->handle(0, 'foo', 'foo.php', 12, array()));
-
-        restore_error_handler();
-
-        $handler = ErrorHandler::register(3);
-        $this->assertFalse($handler->handle(4, 'foo', 'foo.php', 12, array()));
-
-        restore_error_handler();
-
-        $handler = ErrorHandler::register(3);
         try {
-            $handler->handle(111, 'foo', 'foo.php', 12, array());
-        } catch (\ErrorException $e) {
-            $this->assertSame('111: foo in foo.php line 12', $e->getMessage());
-            $this->assertSame(111, $e->getSeverity());
-            $this->assertSame('foo.php', $e->getFile());
-            $this->assertSame(12, $e->getLine());
+            $handler = ErrorHandler::register(0);
+            $this->assertFalse($handler->handle(0, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+
+            $handler = ErrorHandler::register(3);
+            $this->assertFalse($handler->handle(4, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+
+            $handler = ErrorHandler::register(3);
+            try {
+                $handler->handle(111, 'foo', 'foo.php', 12, array());
+            } catch (\ErrorException $e) {
+                $this->assertSame('111: foo in foo.php line 12', $e->getMessage());
+                $this->assertSame(111, $e->getSeverity());
+                $this->assertSame('foo.php', $e->getFile());
+                $this->assertSame(12, $e->getLine());
+            }
+
+            restore_error_handler();
+
+            $handler = ErrorHandler::register(E_USER_DEPRECATED);
+            $this->assertFalse($handler->handle(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+
+            $handler = ErrorHandler::register(E_DEPRECATED);
+            $this->assertFalse($handler->handle(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+
+            $logger = $this->getMock('Psr\Log\LoggerInterface');
+
+            $that = $this;
+            $warnArgCheck = function ($message, $context) use ($that) {
+                $that->assertEquals('foo', $message);
+                $that->assertArrayHasKey('type', $context);
+                $that->assertEquals($context['type'], ErrorHandler::TYPE_DEPRECATION);
+                $that->assertArrayHasKey('stack', $context);
+                $that->assertInternalType('array', $context['stack']);
+            };
+
+            $logger
+                ->expects($this->once())
+                ->method('warning')
+                ->will($this->returnCallback($warnArgCheck))
+            ;
+
+            $handler = ErrorHandler::register(E_USER_DEPRECATED);
+            $handler->setLogger($logger);
+            $this->assertTrue($handler->handle(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+
+            $logger = $this->getMock('Psr\Log\LoggerInterface');
+
+            $that = $this;
+            $logArgCheck = function ($level, $message, $context) use ($that) {
+                $that->assertEquals('Undefined variable: undefVar', $message);
+                $that->assertArrayHasKey('type', $context);
+                $that->assertEquals($context['type'], E_NOTICE);
+            };
+
+            $logger
+                ->expects($this->once())
+                ->method('log')
+                ->will($this->returnCallback($logArgCheck))
+            ;
+
+            $handler = ErrorHandler::register(E_NOTICE);
+            $handler->setLogger($logger, 'scream');
+            unset($undefVar);
+            @$undefVar++;
+
+            restore_error_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+
+            throw $e;
         }
+    }
 
-        restore_error_handler();
+    /**
+     * @dataProvider provideFatalErrorHandlersData
+     */
+    public function testFatalErrorHandlers($error, $class, $translatedMessage)
+    {
+        $handler = new ErrorHandler();
+        $exceptionHandler = new MockExceptionHandler();
 
-        $handler = ErrorHandler::register(E_USER_DEPRECATED);
-        $this->assertTrue($handler->handle(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+        $m = new \ReflectionMethod($handler, 'handleFatalError');
+        $m->setAccessible(true);
+        $m->invoke($handler, array($exceptionHandler, 'handle'), $error);
 
-        restore_error_handler();
+        $this->assertInstanceof($class, $exceptionHandler->e);
+        // class names are case insensitive and PHP/HHVM do not return the same
+        $this->assertSame(strtolower($translatedMessage), strtolower($exceptionHandler->e->getMessage()));
+        $this->assertSame($error['type'], $exceptionHandler->e->getSeverity());
+        $this->assertSame($error['file'], $exceptionHandler->e->getFile());
+        $this->assertSame($error['line'], $exceptionHandler->e->getLine());
+    }
 
-        $handler = ErrorHandler::register(E_DEPRECATED);
-        $this->assertTrue($handler->handle(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
-
-        restore_error_handler();
-
-        $logger = $this->getMock('Psr\Log\LoggerInterface');
-
-        $that = $this;
-        $warnArgCheck = function ($message, $context) use ($that) {
-            $that->assertEquals('foo', $message);
-            $that->assertArrayHasKey('type', $context);
-            $that->assertEquals($context['type'], ErrorHandler::TYPE_DEPRECATION);
-            $that->assertArrayHasKey('stack', $context);
-            $that->assertInternalType('array', $context['stack']);
-        };
-
-        $logger
-            ->expects($this->once())
-            ->method('warning')
-            ->will($this->returnCallback($warnArgCheck))
-        ;
-
-        $handler = ErrorHandler::register(E_USER_DEPRECATED);
-        $handler->setLogger($logger);
-        $handler->handle(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array());
-
-        restore_error_handler();
+    public function provideFatalErrorHandlersData()
+    {
+        return array(
+            // undefined function
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined function test_namespaced_function_again()',
+                ),
+                'Symfony\Component\Debug\Exception\UndefinedFunctionException',
+                'Attempted to call function "test_namespaced_function_again" from the global namespace in foo.php line 12. Did you mean to call: "\\symfony\\component\\debug\\tests\\test_namespaced_function_again"?',
+            ),
+            // class not found
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'WhizBangFactory\' not found',
+                ),
+                'Symfony\Component\Debug\Exception\ClassNotFoundException',
+                'Attempted to load class "WhizBangFactory" from the global namespace in foo.php line 12. Did you forget a use statement for this class?',
+            ),
+        );
     }
 }
+
+function test_namespaced_function_again()
+{
+}

Tests/Exception/FlattenExceptionTest.php

@@ -114,6 +114,7 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals($exception->getMessage(), $flattened->getMessage(), 'The message is copied from the original exception.');
         $this->assertEquals($exception->getCode(), $flattened->getCode(), 'The code is copied from the original exception.');
         $this->assertInstanceOf($flattened->getClass(), $exception, 'The class is set to the class of the original exception');
+
     }
 
     /**
@@ -126,9 +127,9 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
 
         $flattened->setPrevious($flattened2);
 
-        $this->assertSame($flattened2, $flattened->getPrevious());
+        $this->assertSame($flattened2,$flattened->getPrevious());
 
-        $this->assertSame(array($flattened2), $flattened->getAllPrevious());
+        $this->assertSame(array($flattened2),$flattened->getAllPrevious());
     }
 
     /**
@@ -159,13 +160,13 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals(array(
             array(
-                'message' => 'test',
-                'class' => 'Exception',
-                'trace' => array(array(
-                    'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => '', 'file' => 'foo.php', 'line' => 123,
-                    'args' => array(),
+                'message'=> 'test',
+                'class'=>'Exception',
+                'trace'=>array(array(
+                    'namespace'   => '', 'short_class' => '', 'class' => '','type' => '','function' => '', 'file' => 'foo.php', 'line' => 123,
+                    'args'        => array()
                 )),
-            ),
+            )
         ), $flattened->toArray());
     }
 
@@ -186,28 +187,6 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
         $this->assertContains('*DEEP NESTED ARRAY*', serialize($trace));
     }
 
-    public function testTooBigArray()
-    {
-        $a = array();
-        for ($i = 0; $i < 20; ++$i) {
-            for ($j = 0; $j < 50; ++$j) {
-                for ($k = 0; $k < 10; ++$k) {
-                    $a[$i][$j][$k] = 'value';
-                }
-            }
-        }
-        $a[20] = 'value';
-        $a[21] = 'value1';
-        $exception = $this->createException($a);
-
-        $flattened = FlattenException::create($exception);
-        $trace = $flattened->getTrace();
-        $serializeTrace = serialize($trace);
-
-        $this->assertContains('*SKIPPED over 10000 entries*', $serializeTrace);
-        $this->assertNotContains('*value1*', $serializeTrace);
-    }
-
     private function createException($foo)
     {
         return new \Exception();
@@ -223,7 +202,7 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
                     'line' => 123,
                     'function' => 'test',
                     'args' => array(
-                        unserialize('O:14:"BogusTestClass":0:{}'),
+                        unserialize('O:14:"BogusTestClass":0:{}')
                     ),
                 ),
             ),
@@ -232,25 +211,25 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals(array(
             array(
-                'message' => 'test',
-                'class' => 'Exception',
-                'trace' => array(
+                'message'=> 'test',
+                'class'=>'Exception',
+                'trace'=>array(
                     array(
-                        'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => '',
-                        'file' => 'foo.php', 'line' => 123,
-                        'args' => array(),
+                        'namespace'   => '', 'short_class' => '', 'class' => '','type' => '','function' => '',
+                        'file'        => 'foo.php', 'line' => 123,
+                        'args'        => array(),
                     ),
                     array(
-                        'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => 'test',
-                        'file' => __FILE__, 'line' => 123,
-                        'args' => array(
+                        'namespace'   => '', 'short_class' => '', 'class' => '','type' => '','function' => 'test',
+                        'file'        => __FILE__, 'line' => 123,
+                        'args'        => array(
                             array(
-                                'incomplete-object', 'BogusTestClass',
+                                'incomplete-object', 'BogusTestClass'
                             ),
                         ),
-                    ),
+                    )
                 ),
-            ),
+            )
         ), $flattened->toArray());
     }
 }

Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php

@@ -0,0 +1,105 @@
+<?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\Debug\Tests\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
+
+class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider provideClassNotFoundData
+     */
+    public function testClassNotFound($error, $translatedMessage)
+    {
+        $handler = new ClassNotFoundFatalErrorHandler();
+        $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
+
+        $this->assertInstanceof('Symfony\Component\Debug\Exception\ClassNotFoundException', $exception);
+        $this->assertSame($translatedMessage, $exception->getMessage());
+        $this->assertSame($error['type'], $exception->getSeverity());
+        $this->assertSame($error['file'], $exception->getFile());
+        $this->assertSame($error['line'], $exception->getLine());
+    }
+
+    public function provideClassNotFoundData()
+    {
+        return array(
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'WhizBangFactory\' not found',
+                ),
+                'Attempted to load class "WhizBangFactory" from the global namespace in foo.php line 12. Did you forget a use statement for this class?',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'Foo\\Bar\\WhizBangFactory\' not found',
+                ),
+                'Attempted to load class "WhizBangFactory" from namespace "Foo\\Bar" in foo.php line 12. Do you need to "use" it from another namespace?',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'UndefinedFunctionException\' not found',
+                ),
+                'Attempted to load class "UndefinedFunctionException" from the global namespace in foo.php line 12. Did you forget a use statement for this class? Perhaps you need to add a use statement for one of the following: Symfony\Component\Debug\Exception\UndefinedFunctionException.',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'PEARClass\' not found',
+                ),
+                'Attempted to load class "PEARClass" from the global namespace in foo.php line 12. Did you forget a use statement for this class? Perhaps you need to add a use statement for one of the following: Symfony_Component_Debug_Tests_Fixtures_PEARClass.',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
+                ),
+                'Attempted to load class "UndefinedFunctionException" from namespace "Foo\Bar" in foo.php line 12. Do you need to "use" it from another namespace? Perhaps you need to add a use statement for one of the following: Symfony\Component\Debug\Exception\UndefinedFunctionException.',
+            ),
+        );
+    }
+
+    public function testCannotRedeclareClass()
+    {
+        if (!file_exists(__DIR__.'/../FIXTURES/REQUIREDTWICE.PHP')) {
+            $this->markTestSkipped('Can only be run on case insensitive filesystems');
+        }
+
+        require_once __DIR__.'/../FIXTURES/REQUIREDTWICE.PHP';
+
+        $error = array(
+            'type' => 1,
+            'line' => 12,
+            'file' => 'foo.php',
+            'message' => 'Class \'Foo\\Bar\\RequiredTwice\' not found',
+        );
+
+        $handler = new ClassNotFoundFatalErrorHandler();
+        $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
+
+        $this->assertInstanceof('Symfony\Component\Debug\Exception\ClassNotFoundException', $exception);
+    }
+}

Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php

@@ -0,0 +1,80 @@
+<?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\Debug\Tests\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
+
+class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider provideUndefinedFunctionData
+     */
+    public function testUndefinedFunction($error, $translatedMessage)
+    {
+        $handler = new UndefinedFunctionFatalErrorHandler();
+        $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
+
+        $this->assertInstanceof('Symfony\Component\Debug\Exception\UndefinedFunctionException', $exception);
+        // class names are case insensitive and PHP/HHVM do not return the same
+        $this->assertSame(strtolower($translatedMessage), strtolower($exception->getMessage()));
+        $this->assertSame($error['type'], $exception->getSeverity());
+        $this->assertSame($error['file'], $exception->getFile());
+        $this->assertSame($error['line'], $exception->getLine());
+    }
+
+    public function provideUndefinedFunctionData()
+    {
+        return array(
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined function test_namespaced_function()',
+                ),
+                'Attempted to call function "test_namespaced_function" from the global namespace in foo.php line 12. Did you mean to call: "\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function"?',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined function Foo\\Bar\\Baz\\test_namespaced_function()',
+                ),
+                'Attempted to call function "test_namespaced_function" from namespace "Foo\\Bar\\Baz" in foo.php line 12. Did you mean to call: "\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function"?',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined function foo()',
+                ),
+                'Attempted to call function "foo" from the global namespace in foo.php line 12.',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined function Foo\\Bar\\Baz\\foo()',
+                ),
+                'Attempted to call function "foo" from namespace "Foo\Bar\Baz" in foo.php line 12.',
+            ),
+        );
+    }
+}
+
+function test_namespaced_function()
+{
+}

Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php

@@ -0,0 +1,66 @@
+<?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\Debug\Tests\FatalErrorHandler;
+
+use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
+
+class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider provideUndefinedMethodData
+     */
+    public function testUndefinedMethod($error, $translatedMessage)
+    {
+        $handler = new UndefinedMethodFatalErrorHandler();
+        $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
+
+        $this->assertInstanceof('Symfony\Component\Debug\Exception\UndefinedMethodException', $exception);
+        $this->assertSame($translatedMessage, $exception->getMessage());
+        $this->assertSame($error['type'], $exception->getSeverity());
+        $this->assertSame($error['file'], $exception->getFile());
+        $this->assertSame($error['line'], $exception->getLine());
+    }
+
+    public function provideUndefinedMethodData()
+    {
+        return array(
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined method SplObjectStorage::what()',
+                ),
+                'Attempted to call method "what" on class "SplObjectStorage" in foo.php line 12.',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined method SplObjectStorage::walid()',
+                ),
+                'Attempted to call method "walid" on class "SplObjectStorage" in foo.php line 12. Did you mean to call: "valid"?',
+            ),
+            array(
+                array(
+                    'type' => 1,
+                    'line' => 12,
+                    'file' => 'foo.php',
+                    'message' => 'Call to undefined method SplObjectStorage::offsetFet()',
+                ),
+                'Attempted to call method "offsetFet" on class "SplObjectStorage" in foo.php line 12. Did you mean to call: "offsetGet", "offsetSet", "offsetUnset"?',
+            ),
+        );
+    }
+}

Tests/Fixtures/ClassAlias.php

@@ -0,0 +1,3 @@
+<?php
+
+class_alias('Symfony\Component\Debug\Tests\Fixtures\NotPSR0bis', 'Symfony\Component\Debug\Tests\Fixtures\ClassAlias');

Tests/Fixtures/PEARClass.php

@@ -0,0 +1,5 @@
+<?php
+
+class Symfony_Component_Debug_Tests_Fixtures_PEARClass
+{
+}

Tests/Fixtures/RequiredTwice.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class RequiredTwice
+{
+}

Tests/Fixtures/casemismatch.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class CaseMismatch
+{
+}

Tests/Fixtures/notPsr0Bis.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class NotPSR0bis
+{
+}

Tests/Fixtures/psr4/Psr4CaseMismatch.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class PSR4CaseMismatch
+{
+}

Tests/Fixtures/reallyNotPsr0.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class NotPSR0
+{
+}

Tests/MockExceptionHandler.php

@@ -0,0 +1,24 @@
+<?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\Debug\Tests;
+
+use Symfony\Component\Debug\ExceptionHandler;
+
+class MockExceptionHandler extends Exceptionhandler
+{
+    public $e;
+
+    public function handle(\Exception $e)
+    {
+        $this->e = $e;
+    }
+}

composer.json

@@ -3,7 +3,7 @@
     "type": "library",
     "description": "Symfony Debug Component",
     "keywords": [],
-    "homepage": "https://symfony.com",
+    "homepage": "http://symfony.com",
     "license": "MIT",
     "authors": [
         {
@@ -12,35 +12,28 @@
         },
         {
             "name": "Symfony Community",
-            "homepage": "https://symfony.com/contributors"
+            "homepage": "http://symfony.com/contributors"
         }
     ],
     "require": {
         "php": ">=5.3.3"
     },
-    "conflict": {
-        "symfony/http-kernel": ">=2.3,<2.3.24|~2.4.0|>=2.5,<2.5.9|>=2.6,<2.6.2"
-    },
     "require-dev": {
-        "symfony/http-kernel": "~2.3.24|~2.5.9|~2.6,>=2.6.2",
+        "symfony/http-kernel": "~2.1",
         "symfony/http-foundation": "~2.1"
     },
     "suggest": {
         "symfony/http-foundation": "",
-        "symfony/http-kernel": "",
-        "symfony/class-loader": ""
+        "symfony/http-kernel": ""
     },
     "autoload": {
-        "psr-0": { "Symfony\\Component\\Debug\\": "" },
-        "exclude-from-classmap": [
-            "/Tests/"
-        ]
+        "psr-0": { "Symfony\\Component\\Debug\\": "" }
     },
     "target-dir": "Symfony/Component/Debug",
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.3-dev"
+            "dev-master": "2.5-dev"
         }
     }
 }

phpunit.xml.dist

@@ -6,10 +6,6 @@
          colors="true"
          bootstrap="vendor/autoload.php"
 >
-    <php>
-        <ini name="error_reporting" value="-1" />
-    </php>
-
     <testsuites>
         <testsuite name="Symfony Debug Component Test Suite">
             <directory>./Tests/</directory>