Merge branch '2.7' into 2.8

* 2.7:
  updated LICENSE year
  Fixed `@return self` with `$this`

BufferingLogger.php

@@ -0,0 +1,37 @@
+<?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;
+
+use Psr\Log\AbstractLogger;
+
+/**
+ * A buffering logger that stacks logs for later.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class BufferingLogger extends AbstractLogger
+{
+    private $logs = array();
+
+    public function log($level, $message, array $context = array())
+    {
+        $this->logs[] = array($level, $message, $context);
+    }
+
+    public function cleanLogs()
+    {
+        $logs = $this->logs;
+        $this->logs = array();
+
+        return $logs;
+    }
+}

CHANGELOG.md

@@ -1,6 +1,28 @@
 CHANGELOG
 =========
 
+2.8.0
+-----
+
+* added BufferingLogger for errors that happen before a proper logger is configured
+* allow throwing from `__toString()` with `return trigger_error($e, E_USER_ERROR);`
+* deprecate ExceptionHandler::createResponse
+
+2.7.0
+-----
+
+* added deprecations checking for parent interfaces/classes to DebugClassLoader
+* added ZTS support to symfony_debug extension
+* added symfony_debug_backtrace() to symfony_debug extension
+  to track the backtrace of fatal errors
+
+2.6.0
+-----
+
+* generalized ErrorHandler and ExceptionHandler,
+  with some new methods and others deprecated
+* enhanced error messages for uncaught exceptions
+
 2.5.0
 -----
 

Debug.php

@@ -39,15 +39,24 @@ class Debug
 
         static::$enabled = true;
 
-        error_reporting(-1);
+        if (null !== $errorReportingLevel) {
+            error_reporting($errorReportingLevel);
+        } else {
+            error_reporting(-1);
+        }
 
-        ErrorHandler::register($errorReportingLevel, $displayErrors);
-        if ('cli' !== php_sapi_name()) {
+        if ('cli' !== PHP_SAPI) {
+            ini_set('display_errors', 0);
             ExceptionHandler::register();
-        // CLI - display errors only if they're not already logged to STDERR
         } elseif ($displayErrors && (!ini_get('log_errors') || ini_get('error_log'))) {
+            // CLI - display errors only if they're not already logged to STDERR
             ini_set('display_errors', 1);
         }
+        if ($displayErrors) {
+            ErrorHandler::register(new ErrorHandler(new BufferingLogger()));
+        } else {
+            ErrorHandler::register()->throwAt(0, true);
+        }
 
         DebugClassLoader::enable();
     }

DebugClassLoader.php

@@ -21,8 +21,6 @@ namespace Symfony\Component\Debug;
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Christophe Coevoet <stof@notk.org>
  * @author Nicolas Grekas <p@tchwork.com>
- *
- * @api
  */
 class DebugClassLoader
 {
@@ -30,20 +28,21 @@ class DebugClassLoader
     private $isFinder;
     private $wasFinder;
     private static $caseCheck;
+    private static $deprecated = array();
+    private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
+    private static $darwinCache = array('/' => array('/', array()));
 
     /**
      * 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
+     * @param callable|object $classLoader Passing an object is @deprecated since version 2.5 and support for it will be removed in 3.0
      */
     public function __construct($classLoader)
     {
         $this->wasFinder = is_object($classLoader) && method_exists($classLoader, 'findFile');
 
         if ($this->wasFinder) {
+            @trigger_error('The '.__METHOD__.' method will no longer support receiving an object into its $classLoader argument in 3.0.', E_USER_DEPRECATED);
             $this->classLoader = array($classLoader, 'loadClass');
             $this->isFinder = true;
         } else {
@@ -52,16 +51,33 @@ class DebugClassLoader
         }
 
         if (!isset(self::$caseCheck)) {
-            self::$caseCheck = false !== stripos(PHP_OS, 'win') ? (false !== stripos(PHP_OS, 'darwin') ? 2 : 1) : 0;
+            $file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), DIRECTORY_SEPARATOR);
+            $i = strrpos($file, DIRECTORY_SEPARATOR);
+            $dir = substr($file, 0, 1 + $i);
+            $file = substr($file, 1 + $i);
+            $test = strtoupper($file) === $file ? strtolower($file) : strtoupper($file);
+            $test = realpath($dir.$test);
+
+            if (false === $test || false === $i) {
+                // filesystem is case sensitive
+                self::$caseCheck = 0;
+            } elseif (substr($test, -strlen($file)) === $file) {
+                // filesystem is case insensitive and realpath() normalizes the case of characters
+                self::$caseCheck = 1;
+            } elseif (false !== stripos(PHP_OS, 'darwin')) {
+                // on MacOSX, HFS+ is case insensitive but realpath() doesn't normalize the case of characters
+                self::$caseCheck = 2;
+            } else {
+                // filesystem case checks failed, fallback to disabling them
+                self::$caseCheck = 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
+     * @return callable|object A class loader. Since version 2.5, returning an object is @deprecated and support for it will be removed in 3.0
      */
     public function getClassLoader()
     {
@@ -69,12 +85,13 @@ class DebugClassLoader
     }
 
     /**
-     * Wraps all autoloaders
+     * Wraps all autoloaders.
      */
     public static function enable()
     {
         // Ensures we don't hit https://bugs.php.net/42098
-        class_exists(__NAMESPACE__.'\ErrorHandler', true);
+        class_exists('Symfony\Component\Debug\ErrorHandler');
+        class_exists('Psr\Log\LogLevel');
 
         if (!is_array($functions = spl_autoload_functions())) {
             return;
@@ -116,16 +133,18 @@ class DebugClassLoader
     }
 
     /**
-     * Finds a file by class name
+     * Finds a file by class name.
      *
      * @param string $class A class name to resolve to file
      *
      * @return string|null
      *
-     * @deprecated Deprecated since 2.5, to be removed in 3.0.
+     * @deprecated since version 2.5, to be removed in 3.0.
      */
     public function findFile($class)
     {
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0.', E_USER_DEPRECATED);
+
         if ($this->wasFinder) {
             return $this->classLoader[0]->findFile($class);
         }
@@ -147,7 +166,7 @@ class DebugClassLoader
         try {
             if ($this->isFinder) {
                 if ($file = $this->classLoader[0]->findFile($class)) {
-                    require $file;
+                    require_once $file;
                 }
             } else {
                 call_user_func($this->classLoader, $class);
@@ -156,6 +175,10 @@ class DebugClassLoader
         } catch (\Exception $e) {
             ErrorHandler::unstackErrors();
 
+            throw $e;
+        } catch (\Throwable $e) {
+            ErrorHandler::unstackErrors();
+
             throw $e;
         }
 
@@ -174,6 +197,56 @@ class DebugClassLoader
             if ($name !== $class && 0 === strcasecmp($name, $class)) {
                 throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: %s vs %s', $class, $name));
             }
+
+            if (in_array(strtolower($refl->getShortName()), self::$php7Reserved)) {
+                @trigger_error(sprintf('%s uses a reserved class name (%s) that will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
+            } elseif (preg_match('#\n \* @deprecated (.*?)\r?\n \*(?: @|/$)#s', $refl->getDocComment(), $notice)) {
+                self::$deprecated[$name] = preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]);
+            } else {
+                if (2 > $len = 1 + (strpos($name, '\\', 1 + strpos($name, '\\')) ?: strpos($name, '_'))) {
+                    $len = 0;
+                    $ns = '';
+                } else {
+                    switch ($ns = substr($name, 0, $len)) {
+                        case 'Symfony\Bridge\\':
+                        case 'Symfony\Bundle\\':
+                        case 'Symfony\Component\\':
+                            $ns = 'Symfony\\';
+                            $len = strlen($ns);
+                            break;
+                    }
+                }
+                $parent = get_parent_class($class);
+
+                if (!$parent || strncmp($ns, $parent, $len)) {
+                    if ($parent && isset(self::$deprecated[$parent]) && strncmp($ns, $parent, $len)) {
+                        @trigger_error(sprintf('The %s class extends %s that is deprecated %s', $name, $parent, self::$deprecated[$parent]), E_USER_DEPRECATED);
+                    }
+
+                    $parentInterfaces = array();
+                    $deprecatedInterfaces = array();
+                    if ($parent) {
+                        foreach (class_implements($parent) as $interface) {
+                            $parentInterfaces[$interface] = 1;
+                        }
+                    }
+
+                    foreach ($refl->getInterfaceNames() as $interface) {
+                        if (isset(self::$deprecated[$interface]) && strncmp($ns, $interface, $len)) {
+                            $deprecatedInterfaces[] = $interface;
+                        }
+                        foreach (class_implements($interface) as $interface) {
+                            $parentInterfaces[$interface] = 1;
+                        }
+                    }
+
+                    foreach ($deprecatedInterfaces as $interface) {
+                        if (!isset($parentInterfaces[$interface])) {
+                            @trigger_error(sprintf('The %s %s %s that is deprecated %s', $name, $refl->isInterface() ? 'interface extends' : 'class implements', $interface, self::$deprecated[$interface]), E_USER_DEPRECATED);
+                        }
+                    }
+                }
+            }
         }
 
         if ($file) {
@@ -184,35 +257,89 @@ class DebugClassLoader
 
                 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 = $refl->getFilename();
+            if (self::$caseCheck) {
+                $real = explode('\\', $class.strrchr($file, '.'));
+                $tail = explode(DIRECTORY_SEPARATOR, str_replace('/', DIRECTORY_SEPARATOR, $file));
+
+                $i = count($tail) - 1;
+                $j = count($real) - 1;
+
+                while (isset($tail[$i], $real[$j]) && $tail[$i] === $real[$j]) {
+                    --$i;
+                    --$j;
+                }
+
+                array_splice($tail, 0, $i + 1);
+            }
+            if (self::$caseCheck && $tail) {
+                $tail = DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $tail);
+                $tailLen = strlen($tail);
+                $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;
+
+                    $i = 1 + strrpos($real, '/');
+                    $file = substr($real, $i);
+                    $real = substr($real, 0, $i);
+
+                    if (isset(self::$darwinCache[$real])) {
+                        $kDir = $real;
+                    } else {
+                        $kDir = strtolower($real);
+
+                        if (isset(self::$darwinCache[$kDir])) {
+                            $real = self::$darwinCache[$kDir][0];
+                        } else {
+                            $dir = getcwd();
+                            chdir($real);
+                            $real = getcwd().'/';
+                            chdir($dir);
+
+                            $dir = $real;
+                            $k = $kDir;
+                            $i = strlen($dir) - 1;
+                            while (!isset(self::$darwinCache[$k])) {
+                                self::$darwinCache[$k] = array($dir, array());
+                                self::$darwinCache[$dir] = &self::$darwinCache[$k];
+
+                                while ('/' !== $dir[--$i]) {
+                                }
+                                $k = substr($k, 0, ++$i);
+                                $dir = substr($dir, 0, $i--);
                             }
                         }
-                        closedir($h);
                     }
-                    chdir($cwd);
+
+                    $dirFiles = self::$darwinCache[$kDir][1];
+
+                    if (isset($dirFiles[$file])) {
+                        $kFile = $file;
+                    } else {
+                        $kFile = strtolower($file);
+
+                        if (!isset($dirFiles[$kFile])) {
+                            foreach (scandir($real, 2) as $f) {
+                                if ('.' !== $f[0]) {
+                                    $dirFiles[$f] = $f;
+                                    if ($f === $file) {
+                                        $kFile = $k = $file;
+                                    } elseif ($f !== $k = strtolower($f)) {
+                                        $dirFiles[$k] = $f;
+                                    }
+                                }
+                            }
+                            self::$darwinCache[$kDir][1] = $dirFiles;
+                        }
+                    }
+
+                    $real .= $dirFiles[$kFile];
                 }
 
-                if (0 === substr_compare($real, $tail, -strlen($tail), strlen($tail), true)
-                  && 0 !== substr_compare($real, $tail, -strlen($tail), strlen($tail), false)
+                if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
+                  && 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
                 ) {
-                    throw new \RuntimeException(sprintf('Case mismatch between class and source file names: %s vs %s', $class, $real));
+                    throw new \RuntimeException(sprintf('Case mismatch between class and real file names: %s vs %s in %s', substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)));
                 }
             }
 

ErrorHandler.php

@@ -15,6 +15,7 @@ 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\FatalThrowableError;
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
@@ -22,141 +23,406 @@ use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
 use Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface;
 
 /**
- * ErrorHandler.
+ * A generic ErrorHandler for the PHP engine.
+ *
+ * Provides five bit fields that control how errors are handled:
+ * - thrownErrors: errors thrown as \ErrorException
+ * - loggedErrors: logged errors, when not @-silenced
+ * - scopedErrors: errors thrown or logged with their local context
+ * - tracedErrors: errors logged with their stack trace, only once for repeated errors
+ * - screamedErrors: never @-silenced errors
+ *
+ * Each error level can be logged by a dedicated PSR-3 logger object.
+ * Screaming only applies to logging.
+ * Throwing takes precedence over logging.
+ * Uncaught exceptions are logged as E_ERROR.
+ * E_DEPRECATED and E_USER_DEPRECATED levels never throw.
+ * E_RECOVERABLE_ERROR and E_USER_ERROR levels always throw.
+ * Non catchable errors that can be detected at shutdown time are logged when the scream bit field allows so.
+ * As errors have a performance cost, repeated errors are all logged, so that the developer
+ * can see them and weight them as more important to fix than others of the same level.
  *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Konstantin Myakshin <koc-dp@yandex.ru>
  * @author Nicolas Grekas <p@tchwork.com>
  */
 class ErrorHandler
 {
+    /**
+     * @deprecated since version 2.6, to be removed in 3.0.
+     */
     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_RECOVERABLE_ERROR => 'Catchable Fatal Error',
         E_DEPRECATED => 'Deprecated',
         E_USER_DEPRECATED => 'User Deprecated',
-        E_ERROR => 'Error',
-        E_CORE_ERROR => 'Core Error',
+        E_NOTICE => 'Notice',
+        E_USER_NOTICE => 'User Notice',
+        E_STRICT => 'Runtime Notice',
+        E_WARNING => 'Warning',
+        E_USER_WARNING => 'User Warning',
+        E_COMPILE_WARNING => 'Compile Warning',
+        E_CORE_WARNING => 'Core Warning',
+        E_USER_ERROR => 'User Error',
+        E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
         E_COMPILE_ERROR => 'Compile Error',
         E_PARSE => 'Parse Error',
+        E_ERROR => 'Error',
+        E_CORE_ERROR => 'Core Error',
     );
 
-    private $level;
+    private $loggers = array(
+        E_DEPRECATED => array(null, LogLevel::INFO),
+        E_USER_DEPRECATED => array(null, LogLevel::INFO),
+        E_NOTICE => array(null, LogLevel::WARNING),
+        E_USER_NOTICE => array(null, LogLevel::WARNING),
+        E_STRICT => array(null, LogLevel::WARNING),
+        E_WARNING => array(null, LogLevel::WARNING),
+        E_USER_WARNING => array(null, LogLevel::WARNING),
+        E_COMPILE_WARNING => array(null, LogLevel::WARNING),
+        E_CORE_WARNING => array(null, LogLevel::WARNING),
+        E_USER_ERROR => array(null, LogLevel::CRITICAL),
+        E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
+        E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
+        E_PARSE => array(null, LogLevel::CRITICAL),
+        E_ERROR => array(null, LogLevel::CRITICAL),
+        E_CORE_ERROR => array(null, LogLevel::CRITICAL),
+    );
 
-    private $reservedMemory;
+    private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
+    private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
+    private $tracedErrors = 0x77FB; // E_ALL - E_STRICT - E_PARSE
+    private $screamedErrors = 0x55; // E_ERROR + E_CORE_ERROR + E_COMPILE_ERROR + E_PARSE
+    private $loggedErrors = 0;
 
-    private $displayErrors;
+    private $loggedTraces = array();
+    private $isRecursive = 0;
+    private $isRoot = false;
+    private $exceptionHandler;
+    private $bootstrappingLogger;
+
+    private static $reservedMemory;
+    private static $stackedErrors = array();
+    private static $stackedErrorLevels = array();
+    private static $toStringException = null;
 
     /**
-     * @var LoggerInterface[] Loggers for channels
+     * Same init value as thrownErrors.
+     *
+     * @deprecated since version 2.6, to be removed in 3.0.
      */
-    private static $loggers = array();
-
-    private static $stackedErrors = array();
-
-    private static $stackedErrorLevels = array();
+    private $displayErrors = 0x1FFF;
 
     /**
      * 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 them (production usage)
+     * @param self|null|int $handler The handler to register, or @deprecated (since version 2.6, to be removed in 3.0) bit field of thrown levels
+     * @param bool          $replace Whether to replace or not any existing handler
      *
-     * @return ErrorHandler The registered error handler
+     * @return self The registered error handler
      */
-    public static function register($level = null, $displayErrors = true)
+    public static function register($handler = null, $replace = true)
     {
-        $handler = new static();
-        $handler->setLevel($level);
-        $handler->setDisplayErrors($displayErrors);
+        if (null === self::$reservedMemory) {
+            self::$reservedMemory = str_repeat('x', 10240);
+            register_shutdown_function(__CLASS__.'::handleFatalError');
+        }
 
-        ini_set('display_errors', 0);
-        set_error_handler(array($handler, 'handle'));
-        register_shutdown_function(array($handler, 'handleFatal'));
-        $handler->reservedMemory = str_repeat('x', 10240);
+        $levels = -1;
+
+        if ($handlerIsNew = !$handler instanceof self) {
+            // @deprecated polymorphism, to be removed in 3.0
+            if (null !== $handler) {
+                $levels = $replace ? $handler : 0;
+                $replace = true;
+            }
+            $handler = new static();
+        }
+
+        if (null === $prev = set_error_handler(array($handler, 'handleError'))) {
+            restore_error_handler();
+            // Specifying the error types earlier would expose us to https://bugs.php.net/63206
+            set_error_handler(array($handler, 'handleError'), $handler->thrownErrors | $handler->loggedErrors);
+            $handler->isRoot = true;
+        }
+
+        if ($handlerIsNew && is_array($prev) && $prev[0] instanceof self) {
+            $handler = $prev[0];
+            $replace = false;
+        }
+        if ($replace || !$prev) {
+            $handler->setExceptionHandler(set_exception_handler(array($handler, 'handleException')));
+        } else {
+            restore_error_handler();
+        }
+
+        $handler->throwAt($levels & $handler->thrownErrors, true);
 
         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)
+    public function __construct(BufferingLogger $bootstrappingLogger = null)
     {
-        $this->level = null === $level ? error_reporting() : $level;
+        if ($bootstrappingLogger) {
+            $this->bootstrappingLogger = $bootstrappingLogger;
+            $this->setDefaultLogger($bootstrappingLogger);
+        }
     }
 
     /**
-     * Sets the display_errors flag value.
+     * Sets a logger to non assigned errors levels.
      *
-     * @param int $displayErrors The display_errors flag value
+     * @param LoggerInterface $logger  A PSR-3 logger to put as default for the given levels
+     * @param array|int       $levels  An array map of E_* to LogLevel::* or an integer bit field of E_* constants
+     * @param bool            $replace Whether to replace or not any existing logger
      */
-    public function setDisplayErrors($displayErrors)
+    public function setDefaultLogger(LoggerInterface $logger, $levels = null, $replace = false)
     {
-        $this->displayErrors = $displayErrors;
-    }
+        $loggers = array();
 
-    /**
-     * 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] = $logger;
-    }
-
-    /**
-     * @throws \ErrorException When error_reporting returns error
-     */
-    public function handle($level, $message, $file = 'unknown', $line = 0, $context = array())
-    {
-        if ($level & (E_USER_DEPRECATED | E_DEPRECATED)) {
-            if (isset(self::$loggers['deprecation'])) {
-                if (self::$stackedErrorLevels) {
-                    self::$stackedErrors[] = func_get_args();
-                } else {
-                    if (PHP_VERSION_ID < 50400) {
-                        $stack = array_map(
-                            function ($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' => $stack));
+        if (is_array($levels)) {
+            foreach ($levels as $type => $logLevel) {
+                if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
+                    $loggers[$type] = array($logger, $logLevel);
                 }
-
-                return true;
             }
-        } elseif ($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;
+        } else {
+            if (null === $levels) {
+                $levels = E_ALL | E_STRICT;
             }
+            foreach ($this->loggers as $type => $log) {
+                if (($type & $levels) && (empty($log[0]) || $replace || $log[0] === $this->bootstrappingLogger)) {
+                    $log[0] = $logger;
+                    $loggers[$type] = $log;
+                }
+            }
+        }
 
-            $exception = sprintf('%s: %s in %s line %d', isset($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);
+        $this->setLoggers($loggers);
+    }
+
+    /**
+     * Sets a logger for each error level.
+     *
+     * @param array $loggers Error levels to [LoggerInterface|null, LogLevel::*] map
+     *
+     * @return array The previous map
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function setLoggers(array $loggers)
+    {
+        $prevLogged = $this->loggedErrors;
+        $prev = $this->loggers;
+        $flush = array();
+
+        foreach ($loggers as $type => $log) {
+            if (!isset($prev[$type])) {
+                throw new \InvalidArgumentException('Unknown error type: '.$type);
+            }
+            if (!is_array($log)) {
+                $log = array($log);
+            } elseif (!array_key_exists(0, $log)) {
+                throw new \InvalidArgumentException('No logger provided');
+            }
+            if (null === $log[0]) {
+                $this->loggedErrors &= ~$type;
+            } elseif ($log[0] instanceof LoggerInterface) {
+                $this->loggedErrors |= $type;
             } else {
-                $exception = new \ErrorException($exception, 0, $level, $file, $line);
+                throw new \InvalidArgumentException('Invalid logger provided');
+            }
+            $this->loggers[$type] = $log + $prev[$type];
+
+            if ($this->bootstrappingLogger && $prev[$type][0] === $this->bootstrappingLogger) {
+                $flush[$type] = $type;
+            }
+        }
+        $this->reRegister($prevLogged | $this->thrownErrors);
+
+        if ($flush) {
+            foreach ($this->bootstrappingLogger->cleanLogs() as $log) {
+                $type = $log[2]['type'];
+                if (!isset($flush[$type])) {
+                    $this->bootstrappingLogger->log($log[0], $log[1], $log[2]);
+                } elseif ($this->loggers[$type][0]) {
+                    $this->loggers[$type][0]->log($this->loggers[$type][1], $log[1], $log[2]);
+                }
+            }
+        }
+
+        return $prev;
+    }
+
+    /**
+     * Sets a user exception handler.
+     *
+     * @param callable $handler A handler that will be called on Exception
+     *
+     * @return callable|null The previous exception handler
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function setExceptionHandler($handler)
+    {
+        if (null !== $handler && !is_callable($handler)) {
+            throw new \LogicException('The exception handler must be a valid PHP callable.');
+        }
+        $prev = $this->exceptionHandler;
+        $this->exceptionHandler = $handler;
+
+        return $prev;
+    }
+
+    /**
+     * Sets the PHP error levels that throw an exception when a PHP error occurs.
+     *
+     * @param int  $levels  A bit field of E_* constants for thrown errors
+     * @param bool $replace Replace or amend the previous value
+     *
+     * @return int The previous value
+     */
+    public function throwAt($levels, $replace = false)
+    {
+        $prev = $this->thrownErrors;
+        $this->thrownErrors = ($levels | E_RECOVERABLE_ERROR | E_USER_ERROR) & ~E_USER_DEPRECATED & ~E_DEPRECATED;
+        if (!$replace) {
+            $this->thrownErrors |= $prev;
+        }
+        $this->reRegister($prev | $this->loggedErrors);
+
+        // $this->displayErrors is @deprecated since version 2.6
+        $this->displayErrors = $this->thrownErrors;
+
+        return $prev;
+    }
+
+    /**
+     * Sets the PHP error levels for which local variables are preserved.
+     *
+     * @param int  $levels  A bit field of E_* constants for scoped errors
+     * @param bool $replace Replace or amend the previous value
+     *
+     * @return int The previous value
+     */
+    public function scopeAt($levels, $replace = false)
+    {
+        $prev = $this->scopedErrors;
+        $this->scopedErrors = (int) $levels;
+        if (!$replace) {
+            $this->scopedErrors |= $prev;
+        }
+
+        return $prev;
+    }
+
+    /**
+     * Sets the PHP error levels for which the stack trace is preserved.
+     *
+     * @param int  $levels  A bit field of E_* constants for traced errors
+     * @param bool $replace Replace or amend the previous value
+     *
+     * @return int The previous value
+     */
+    public function traceAt($levels, $replace = false)
+    {
+        $prev = $this->tracedErrors;
+        $this->tracedErrors = (int) $levels;
+        if (!$replace) {
+            $this->tracedErrors |= $prev;
+        }
+
+        return $prev;
+    }
+
+    /**
+     * Sets the error levels where the @-operator is ignored.
+     *
+     * @param int  $levels  A bit field of E_* constants for screamed errors
+     * @param bool $replace Replace or amend the previous value
+     *
+     * @return int The previous value
+     */
+    public function screamAt($levels, $replace = false)
+    {
+        $prev = $this->screamedErrors;
+        $this->screamedErrors = (int) $levels;
+        if (!$replace) {
+            $this->screamedErrors |= $prev;
+        }
+
+        return $prev;
+    }
+
+    /**
+     * Re-registers as a PHP error handler if levels changed.
+     */
+    private function reRegister($prev)
+    {
+        if ($prev !== $this->thrownErrors | $this->loggedErrors) {
+            $handler = set_error_handler('var_dump');
+            $handler = is_array($handler) ? $handler[0] : null;
+            restore_error_handler();
+            if ($handler === $this) {
+                restore_error_handler();
+                if ($this->isRoot) {
+                    set_error_handler(array($this, 'handleError'), $this->thrownErrors | $this->loggedErrors);
+                } else {
+                    set_error_handler(array($this, 'handleError'));
+                }
+            }
+        }
+    }
+
+    /**
+     * Handles errors by filtering then logging them according to the configured bit fields.
+     *
+     * @param int    $type      One of the E_* constants
+     * @param string $message
+     * @param string $file
+     * @param int    $line
+     * @param array  $context
+     * @param array  $backtrace
+     *
+     * @return bool Returns false when no handling happens so that the PHP engine can handle the error itself
+     *
+     * @throws \ErrorException When $this->thrownErrors requests so
+     *
+     * @internal
+     */
+    public function handleError($type, $message, $file, $line, array $context, array $backtrace = null)
+    {
+        $level = error_reporting() | E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
+        $log = $this->loggedErrors & $type;
+        $throw = $this->thrownErrors & $type & $level;
+        $type &= $level | $this->screamedErrors;
+
+        if (!$type || (!$log && !$throw)) {
+            return $type && $log;
+        }
+
+        if (isset($context['GLOBALS']) && ($this->scopedErrors & $type)) {
+            $e = $context;                  // Whatever the signature of the method,
+            unset($e['GLOBALS'], $context); // $context is always a reference in 5.3
+            $context = $e;
+        }
+
+        if (null !== $backtrace && $type & E_ERROR) {
+            // E_ERROR fatal errors are triggered on HHVM when
+            // hhvm.error_handling.call_user_handler_on_fatals=1
+            // which is the way to get their backtrace.
+            $this->handleFatalError(compact('type', 'message', 'file', 'line', 'backtrace'));
+
+            return true;
+        }
+
+        if ($throw) {
+            if (null !== self::$toStringException) {
+                $throw = self::$toStringException;
+                self::$toStringException = null;
+            } elseif (($this->scopedErrors & $type) && class_exists('Symfony\Component\Debug\Exception\ContextErrorException')) {
+                // Checking for class existence is a work around for https://bugs.php.net/42098
+                $throw = new ContextErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line, $context);
+            } else {
+                $throw = new \ErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line);
             }
 
             if (PHP_VERSION_ID <= 50407 && (PHP_VERSION_ID >= 50400 || PHP_VERSION_ID <= 50317)) {
@@ -164,46 +430,238 @@ class ErrorHandler
                 // 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->errorHandlerCanary = new ErrorHandlerCanary();
             }
 
-            throw $exception;
-        }
+            if (E_USER_ERROR & $type) {
+                $backtrace = $backtrace ?: $throw->getTrace();
 
-        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:
-                        $logLevel = LogLevel::ERROR;
-                        break;
+                for ($i = 1; isset($backtrace[$i]); ++$i) {
+                    if (isset($backtrace[$i]['function'], $backtrace[$i]['type'], $backtrace[$i - 1]['function'])
+                        && '__toString' === $backtrace[$i]['function']
+                        && '->' === $backtrace[$i]['type']
+                        && !isset($backtrace[$i - 1]['class'])
+                        && ('trigger_error' === $backtrace[$i - 1]['function'] || 'user_error' === $backtrace[$i - 1]['function'])
+                    ) {
+                        // Here, we know trigger_error() has been called from __toString().
+                        // HHVM is fine with throwing from __toString() but PHP triggers a fatal error instead.
+                        // A small convention allows working around the limitation:
+                        // given a caught $e exception in __toString(), quitting the method with
+                        // `return trigger_error($e, E_USER_ERROR);` allows this error handler
+                        // to make $e get through the __toString() barrier.
 
-                    case E_WARNING:
-                    case E_USER_WARNING:
-                        $logLevel = LogLevel::WARNING;
-                        break;
+                        foreach ($context as $e) {
+                            if (($e instanceof \Exception || $e instanceof \Throwable) && $e->__toString() === $message) {
+                                if (1 === $i) {
+                                    // On HHVM
+                                    $throw = $e;
+                                    break;
+                                }
+                                self::$toStringException = $e;
 
-                    default:
-                        $logLevel = LogLevel::NOTICE;
-                        break;
+                                return true;
+                            }
+                        }
+
+                        if (1 < $i) {
+                            // On PHP (not on HHVM), display the original error message instead of the default one.
+                            $this->handleException($throw);
+
+                            // Stop the process by giving back the error to the native handler.
+                            return false;
+                        }
+                    }
                 }
+            }
 
-                self::$loggers['scream']->log($logLevel, $message, array(
-                    'type' => $level,
-                    'file' => $file,
-                    'line' => $line,
-                    'scream' => error_reporting(),
-                ));
+            throw $throw;
+        }
+
+        // For duplicated errors, log the trace only once
+        $e = md5("{$type}/{$line}/{$file}\x00{$message}", true);
+        $trace = true;
+
+        if (!($this->tracedErrors & $type) || isset($this->loggedTraces[$e])) {
+            $trace = false;
+        } else {
+            $this->loggedTraces[$e] = 1;
+        }
+
+        $e = compact('type', 'file', 'line', 'level');
+
+        if ($type & $level) {
+            if ($this->scopedErrors & $type) {
+                $e['scope_vars'] = $context;
+                if ($trace) {
+                    $e['stack'] = $backtrace ?: debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);
+                }
+            } elseif ($trace) {
+                if (null === $backtrace) {
+                    $e['stack'] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+                } else {
+                    foreach ($backtrace as &$frame) {
+                        unset($frame['args'], $frame);
+                    }
+                    $e['stack'] = $backtrace;
+                }
             }
         }
 
-        return false;
+        if ($this->isRecursive) {
+            $log = 0;
+        } elseif (self::$stackedErrorLevels) {
+            self::$stackedErrors[] = array($this->loggers[$type][0], ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG, $message, $e);
+        } else {
+            try {
+                $this->isRecursive = true;
+                $this->loggers[$type][0]->log(($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG, $message, $e);
+                $this->isRecursive = false;
+            } catch (\Exception $e) {
+                $this->isRecursive = false;
+
+                throw $e;
+            } catch (\Throwable $e) {
+                $this->isRecursive = false;
+
+                throw $e;
+            }
+        }
+
+        return $type && $log;
     }
 
     /**
-     * Configure the error handler for delayed handling.
+     * Handles an exception by logging then forwarding it to another handler.
+     *
+     * @param \Exception|\Throwable $exception An exception to handle
+     * @param array                 $error     An array as returned by error_get_last()
+     *
+     * @internal
+     */
+    public function handleException($exception, array $error = null)
+    {
+        if (!$exception instanceof \Exception) {
+            $exception = new FatalThrowableError($exception);
+        }
+        $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
+
+        if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
+            $e = array(
+                'type' => $type,
+                'file' => $exception->getFile(),
+                'line' => $exception->getLine(),
+                'level' => error_reporting(),
+                'stack' => $exception->getTrace(),
+            );
+            if ($exception instanceof FatalErrorException) {
+                if ($exception instanceof FatalThrowableError) {
+                    $error = array(
+                        'type' => $type,
+                        'message' => $message = $exception->getMessage(),
+                        'file' => $e['file'],
+                        'line' => $e['line'],
+                    );
+                } else {
+                    $message = 'Fatal '.$exception->getMessage();
+                }
+            } elseif ($exception instanceof \ErrorException) {
+                $message = 'Uncaught '.$exception->getMessage();
+                if ($exception instanceof ContextErrorException) {
+                    $e['context'] = $exception->getContext();
+                }
+            } else {
+                $message = 'Uncaught Exception: '.$exception->getMessage();
+            }
+        }
+        if ($this->loggedErrors & $type) {
+            try {
+                $this->loggers[$type][0]->log($this->loggers[$type][1], $message, $e);
+            } catch (\Exception $handlerException) {
+            } catch (\Throwable $handlerException) {
+            }
+        }
+        if ($exception instanceof FatalErrorException && !$exception instanceof OutOfMemoryException && $error) {
+            foreach ($this->getFatalErrorHandlers() as $handler) {
+                if ($e = $handler->handleError($error, $exception)) {
+                    $exception = $e;
+                    break;
+                }
+            }
+        }
+        if (empty($this->exceptionHandler)) {
+            throw $exception; // Give back $exception to the native handler
+        }
+        try {
+            call_user_func($this->exceptionHandler, $exception);
+        } catch (\Exception $handlerException) {
+        } catch (\Throwable $handlerException) {
+        }
+        if (isset($handlerException)) {
+            $this->exceptionHandler = null;
+            $this->handleException($handlerException);
+        }
+    }
+
+    /**
+     * Shutdown registered function for handling PHP fatal errors.
+     *
+     * @param array $error An array as returned by error_get_last()
+     *
+     * @internal
+     */
+    public static function handleFatalError(array $error = null)
+    {
+        if (null === self::$reservedMemory) {
+            return;
+        }
+
+        self::$reservedMemory = null;
+
+        $handler = set_error_handler('var_dump');
+        $handler = is_array($handler) ? $handler[0] : null;
+        restore_error_handler();
+
+        if (!$handler instanceof self) {
+            return;
+        }
+
+        if (null === $error) {
+            $error = error_get_last();
+        }
+
+        try {
+            while (self::$stackedErrorLevels) {
+                static::unstackErrors();
+            }
+        } catch (\Exception $exception) {
+            // Handled below
+        } catch (\Throwable $exception) {
+            // Handled below
+        }
+
+        if ($error && $error['type'] &= E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR) {
+            // Let's not throw anymore but keep logging
+            $handler->throwAt(0, true);
+            $trace = isset($error['backtrace']) ? $error['backtrace'] : null;
+
+            if (0 === strpos($error['message'], 'Allowed memory') || 0 === strpos($error['message'], 'Out of memory')) {
+                $exception = new OutOfMemoryException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, false, $trace);
+            } else {
+                $exception = new FatalErrorException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, true, $trace);
+            }
+        } elseif (!isset($exception)) {
+            return;
+        }
+
+        try {
+            $handler->handleException($exception, $error);
+        } catch (FatalErrorException $e) {
+            // Ignore this re-throw
+        }
+    }
+
+    /**
+     * Configures 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
@@ -219,7 +677,7 @@ class ErrorHandler
     }
 
     /**
-     * Unstacks stacked errors and forwards to the regular handler
+     * Unstacks stacked errors and forwards to the logger.
      */
     public static function unstackErrors()
     {
@@ -237,64 +695,12 @@ class ErrorHandler
             $errors = self::$stackedErrors;
             self::$stackedErrors = array();
 
-            $errorHandler = set_error_handler('var_dump');
-            restore_error_handler();
-
-            if ($errorHandler) {
-                foreach ($errors as $e) {
-                    call_user_func_array($errorHandler, $e);
-                }
+            foreach ($errors as $e) {
+                $e[0]->log($e[1], $e[2], $e[3]);
             }
         }
     }
 
-    public function handleFatal()
-    {
-        $this->reservedMemory = '';
-        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' => $error['type'],
-                'file' => $error['file'],
-                'line' => $error['line'],
-            );
-
-            self::$loggers['emergency']->emergency($error['message'], $fatal);
-        }
-
-        if ($this->displayErrors && $exceptionHandler) {
-            $this->handleFatalError($exceptionHandler, $error);
-        }
-    }
-
     /**
      * Gets the fatal error handlers.
      *
@@ -311,38 +717,96 @@ class ErrorHandler
         );
     }
 
-    private function handleFatalError($exceptionHandler, array $error)
+    /**
+     * Sets the level at which the conversion to Exception is done.
+     *
+     * @param int|null $level The level (null to use the error_reporting() value and 0 to disable)
+     *
+     * @deprecated since version 2.6, to be removed in 3.0. Use throwAt() instead.
+     */
+    public function setLevel($level)
     {
-        // Let PHP handle any further error
-        set_error_handler('var_dump', 0);
-        ini_set('display_errors', 1);
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.6 and will be removed in 3.0. Use the throwAt() method instead.', E_USER_DEPRECATED);
 
-        $level = isset($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);
+        $level = null === $level ? error_reporting() : $level;
+        $this->throwAt($level, true);
+    }
+
+    /**
+     * Sets the display_errors flag value.
+     *
+     * @param int $displayErrors The display_errors flag value
+     *
+     * @deprecated since version 2.6, to be removed in 3.0. Use throwAt() instead.
+     */
+    public function setDisplayErrors($displayErrors)
+    {
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.6 and will be removed in 3.0. Use the throwAt() method instead.', E_USER_DEPRECATED);
+
+        if ($displayErrors) {
+            $this->throwAt($this->displayErrors, true);
         } 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;
-                }
-            }
+            $displayErrors = $this->displayErrors;
+            $this->throwAt(0, true);
+            $this->displayErrors = $displayErrors;
         }
+    }
 
-        try {
-            call_user_func($exceptionHandler, $exception);
-        } catch (\Exception $e) {
-            // The handler failed. Let PHP handle that now.
-            throw $exception;
+    /**
+     * 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)
+     *
+     * @deprecated since version 2.6, to be removed in 3.0. Use setLoggers() or setDefaultLogger() instead.
+     */
+    public static function setLogger(LoggerInterface $logger, $channel = 'deprecation')
+    {
+        @trigger_error('The '.__METHOD__.' static method is deprecated since version 2.6 and will be removed in 3.0. Use the setLoggers() or setDefaultLogger() methods instead.', E_USER_DEPRECATED);
+
+        $handler = set_error_handler('var_dump');
+        $handler = is_array($handler) ? $handler[0] : null;
+        restore_error_handler();
+        if (!$handler instanceof self) {
+            return;
         }
+        if ('deprecation' === $channel) {
+            $handler->setDefaultLogger($logger, E_DEPRECATED | E_USER_DEPRECATED, true);
+            $handler->screamAt(E_DEPRECATED | E_USER_DEPRECATED);
+        } elseif ('scream' === $channel) {
+            $handler->setDefaultLogger($logger, E_ALL | E_STRICT, false);
+            $handler->screamAt(E_ALL | E_STRICT);
+        } elseif ('emergency' === $channel) {
+            $handler->setDefaultLogger($logger, E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR, true);
+            $handler->screamAt(E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
+        }
+    }
+
+    /**
+     * @deprecated since version 2.6, to be removed in 3.0. Use handleError() instead.
+     */
+    public function handle($level, $message, $file = 'unknown', $line = 0, $context = array())
+    {
+        $this->handleError(E_USER_DEPRECATED, 'The '.__METHOD__.' method is deprecated since version 2.6 and will be removed in 3.0. Use the handleError() method instead.', __FILE__, __LINE__, array());
+
+        return $this->handleError($level, $message, $file, $line, (array) $context);
+    }
+
+    /**
+     * Handles PHP fatal errors.
+     *
+     * @deprecated since version 2.6, to be removed in 3.0. Use handleFatalError() instead.
+     */
+    public function handleFatal()
+    {
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.6 and will be removed in 3.0. Use the handleFatalError() method instead.', E_USER_DEPRECATED);
+
+        static::handleFatalError();
     }
 }
 
 /**
- * Private class used to work around https://bugs.php.net/54275
+ * Private class used to work around https://bugs.php.net/54275.
  *
  * @author Nicolas Grekas <p@tchwork.com>
  *

Exception/DummyException.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Debug\Exception;
 
+@trigger_error('The '.__NAMESPACE__.'\DummyException class is deprecated since version 2.5 and will be removed in 3.0.', E_USER_DEPRECATED);
+
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  *

Exception/FatalErrorException.php

@@ -35,11 +35,19 @@ use Symfony\Component\HttpKernel\Exception\FatalErrorException as LegacyFatalErr
  */
 class FatalErrorException extends LegacyFatalErrorException
 {
-    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true)
+    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true, array $trace = null)
     {
         parent::__construct($message, $code, $severity, $filename, $lineno);
 
-        if (null !== $traceOffset) {
+        if (null !== $trace) {
+            if (!$traceArgs) {
+                foreach ($trace as &$frame) {
+                    unset($frame['args'], $frame['this'], $frame);
+                }
+            }
+
+            $this->setTrace($trace);
+        } elseif (null !== $traceOffset) {
             if (function_exists('xdebug_get_function_stack')) {
                 $trace = xdebug_get_function_stack();
                 if (0 < $traceOffset) {
@@ -48,7 +56,7 @@ class FatalErrorException extends LegacyFatalErrorException
 
                 foreach ($trace as &$frame) {
                     if (!isset($frame['type'])) {
-                        //  XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
+                        // XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
                         if (isset($frame['class'])) {
                             $frame['type'] = '::';
                         }
@@ -69,6 +77,11 @@ class FatalErrorException extends LegacyFatalErrorException
 
                 unset($frame);
                 $trace = array_reverse($trace);
+            } elseif (function_exists('symfony_debug_backtrace')) {
+                $trace = symfony_debug_backtrace();
+                if (0 < $traceOffset) {
+                    array_splice($trace, 0, $traceOffset);
+                }
             } else {
                 $trace = array();
             }

Exception/FatalThrowableError.php

@@ -0,0 +1,44 @@
+<?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;
+
+/**
+ * Fatal Throwable Error.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class FatalThrowableError extends FatalErrorException
+{
+    public function __construct(\Throwable $e)
+    {
+        if ($e instanceof \ParseError) {
+            $message = 'Parse error: '.$e->getMessage();
+            $severity = E_PARSE;
+        } elseif ($e instanceof \TypeError) {
+            $message = 'Type error: '.$e->getMessage();
+            $severity = E_RECOVERABLE_ERROR;
+        } else {
+            $message = $e->getMessage();
+            $severity = E_ERROR;
+        }
+
+        \ErrorException::__construct(
+            $message,
+            $e->getCode(),
+            $severity,
+            $e->getFile(),
+            $e->getLine()
+        );
+
+        $this->setTrace($e->getTrace());
+    }
+}

Exception/FlattenException.php

@@ -94,8 +94,13 @@ class FlattenException extends LegacyFlattenException
         $e->setClass(get_class($exception));
         $e->setFile($exception->getFile());
         $e->setLine($exception->getLine());
-        if ($exception->getPrevious()) {
-            $e->setPrevious(static::create($exception->getPrevious()));
+
+        $previous = $exception->getPrevious();
+
+        if ($previous instanceof \Exception) {
+            $e->setPrevious(static::create($previous));
+        } elseif ($previous instanceof \Throwable) {
+            $e->setPrevious(static::create(new FatalThrowableError($previous)));
         }
 
         return $e;
@@ -258,7 +263,10 @@ class FlattenException extends LegacyFlattenException
             if (++$count > 1e4) {
                 return array('array', '*SKIPPED over 10000 entries*');
             }
-            if (is_object($value)) {
+            if ($value instanceof \__PHP_Incomplete_Class) {
+                // is_object() returns false on PHP<=7.1
+                $result[$key] = array('incomplete-object', $this->getClassNameFromIncomplete($value));
+            } elseif (is_object($value)) {
                 $result[$key] = array('object', get_class($value));
             } elseif (is_array($value)) {
                 if ($level > 10) {
@@ -272,9 +280,6 @@ class FlattenException extends LegacyFlattenException
                 $result[$key] = array('boolean', $value);
             } elseif (is_resource($value)) {
                 $result[$key] = array('resource', get_resource_type($value));
-            } elseif ($value instanceof \__PHP_Incomplete_Class) {
-                // Special case of object, is_object will return false
-                $result[$key] = array('incomplete-object', $this->getClassNameFromIncomplete($value));
             } else {
                 $result[$key] = array('string', (string) $value);
             }

ExceptionHandler.php

@@ -34,25 +34,41 @@ class ExceptionHandler
     private $handler;
     private $caughtBuffer;
     private $caughtLength;
+    private $fileLinkFormat;
 
-    public function __construct($debug = true, $charset = 'UTF-8')
+    public function __construct($debug = true, $charset = null, $fileLinkFormat = null)
     {
+        if (false !== strpos($charset, '%')) {
+            @trigger_error('Providing $fileLinkFormat as second argument to '.__METHOD__.' is deprecated since version 2.8 and will be unsupported in 3.0. Please provide it as third argument, after $charset.', E_USER_DEPRECATED);
+
+            // Swap $charset and $fileLinkFormat for BC reasons
+            $pivot = $fileLinkFormat;
+            $fileLinkFormat = $charset;
+            $charset = $pivot;
+        }
         $this->debug = $debug;
-        $this->charset = $charset;
+        $this->charset = $charset ?: ini_get('default_charset') ?: 'UTF-8';
+        $this->fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
     }
 
     /**
      * Registers the exception handler.
      *
-     * @param bool $debug
+     * @param bool        $debug          Enable/disable debug mode, where the stack trace is displayed
+     * @param string|null $charset        The charset used by exception messages
+     * @param string|null $fileLinkFormat The IDE link template
      *
-     * @return ExceptionHandler The registered exception handler
+     * @return static
      */
-    public static function register($debug = true)
+    public static function register($debug = true, $charset = null, $fileLinkFormat = null)
     {
-        $handler = new static($debug);
+        $handler = new static($debug, $charset, $fileLinkFormat);
 
-        set_exception_handler(array($handler, 'handle'));
+        $prev = set_exception_handler(array($handler, 'handle'));
+        if (is_array($prev) && $prev[0] instanceof ErrorHandler) {
+            restore_exception_handler();
+            $prev[0]->setExceptionHandler(array($handler, 'handle'));
+        }
 
         return $handler;
     }
@@ -75,6 +91,21 @@ class ExceptionHandler
         return $old;
     }
 
+    /**
+     * Sets the format for links to source files.
+     *
+     * @param string $format The format for links to source files
+     *
+     * @return string The previous file link format
+     */
+    public function setFileLinkFormat($format)
+    {
+        $old = $this->fileLinkFormat;
+        $this->fileLinkFormat = $format;
+
+        return $old;
+    }
+
     /**
      * Sends a response for the given Exception.
      *
@@ -124,19 +155,23 @@ class ExceptionHandler
      * it will fallback to plain PHP functions.
      *
      * @param \Exception $exception An \Exception instance
-     *
-     * @see sendPhpResponse()
-     * @see createResponse()
      */
     private function failSafeHandle(\Exception $exception)
     {
-        if (class_exists('Symfony\Component\HttpFoundation\Response', false)) {
+        if (class_exists('Symfony\Component\HttpFoundation\Response', false)
+            && __CLASS__ !== get_class($this)
+            && ($reflector = new \ReflectionMethod($this, 'createResponse'))
+            && __CLASS__ !== $reflector->class
+        ) {
             $response = $this->createResponse($exception);
             $response->sendHeaders();
             $response->sendContent();
-        } else {
-            $this->sendPhpResponse($exception);
+            @trigger_error(sprintf("The %s::createResponse method is deprecated since 2.8 and won't be called anymore when handling an exception in 3.0.", $reflector->class), E_USER_DEPRECATED);
+
+            return;
         }
+
+        $this->sendPhpResponse($exception);
     }
 
     /**
@@ -145,7 +180,7 @@ class ExceptionHandler
      * This method uses plain PHP functions like header() and echo to output
      * the response.
      *
-     * @param \Exception|FlattenException $exception An \Exception instance
+     * @param \Exception|FlattenException $exception An \Exception or FlattenException instance
      */
     public function sendPhpResponse($exception)
     {
@@ -158,6 +193,7 @@ 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));
@@ -166,17 +202,37 @@ class ExceptionHandler
     /**
      * Creates the error Response associated with the given Exception.
      *
-     * @param \Exception|FlattenException $exception An \Exception instance
+     * @param \Exception|FlattenException $exception An \Exception or FlattenException instance
      *
      * @return Response A Response instance
+     *
+     * @deprecated since 2.8, to be removed in 3.0.
      */
     public function createResponse($exception)
+    {
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.8 and will be removed in 3.0.', E_USER_DEPRECATED);
+
+        if (!$exception instanceof FlattenException) {
+            $exception = FlattenException::create($exception);
+        }
+
+        return Response::create($this->getHtml($exception), $exception->getStatusCode(), $exception->getHeaders())->setCharset($this->charset);
+    }
+
+    /**
+     * Gets the full HTML content associated with the given exception.
+     *
+     * @param \Exception|FlattenException $exception An \Exception or FlattenException instance
+     *
+     * @return string The HTML content as a string
+     */
+    public function getHtml($exception)
     {
         if (!$exception instanceof FlattenException) {
             $exception = FlattenException::create($exception);
         }
 
-        return new Response($this->decorate($this->getContent($exception), $this->getStylesheet($exception)), $exception->getStatusCode(), $exception->getHeaders());
+        return $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
     }
 
     /**
@@ -203,29 +259,26 @@ class ExceptionHandler
                 $total = $count + 1;
                 foreach ($exception->toArray() as $position => $e) {
                     $ind = $count - $position + 1;
-                    $class = $this->abbrClass($e['class']);
-                    $message = nl2br($e['message']);
-                    $content .= sprintf(<<<EOF
-                        <div class="block_exception clear_fix">
-                            <h2><span>%d/%d</span> %s: %s</h2>
-                        </div>
+                    $class = $this->formatClass($e['class']);
+                    $message = nl2br($this->escapeHtml($e['message']));
+                    $content .= sprintf(<<<'EOF'
+                        <h2 class="block_exception clear_fix">
+                            <span class="exception_counter">%d/%d</span>
+                            <span class="exception_title">%s%s:</span>
+                            <span class="exception_message">%s</span>
+                        </h2>
                         <div class="block">
                             <ol class="traces list_exception">
 
 EOF
-                        , $ind, $total, $class, $message);
+                        , $ind, $total, $class, $this->formatPath($e['trace'][0]['file'], $e['trace'][0]['line']), $message);
                     foreach ($e['trace'] as $trace) {
                         $content .= '       <li>';
                         if ($trace['function']) {
-                            $content .= sprintf('at %s%s%s(%s)', $this->abbrClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
+                            $content .= sprintf('at %s%s%s(%s)', $this->formatClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
                         }
                         if (isset($trace['file']) && isset($trace['line'])) {
-                            if ($linkFormat = ini_get('xdebug.file_link_format')) {
-                                $link = str_replace(array('%f', '%l'), array($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 %s', $trace['file'], $trace['line']);
-                            }
+                            $content .= $this->formatPath($trace['file'], $trace['line']);
                         }
                         $content .= "</li>\n";
                     }
@@ -235,7 +288,7 @@ 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), $e->getMessage());
+                    $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($e), $this->escapeHtml($e->getMessage()));
                 } else {
                     $title = 'Whoops, looks like something went wrong.';
                 }
@@ -259,7 +312,7 @@ 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; }
@@ -270,12 +323,14 @@ EOF;
             .sf-reset abbr { border-bottom: 1px dotted #000; cursor: help; }
             .sf-reset p { font-size:14px; line-height:20px; color:#868686; padding-bottom:20px }
             .sf-reset strong { font-weight:bold; }
-            .sf-reset a { color:#6c6159; }
+            .sf-reset a { color:#6c6159; cursor: default; }
             .sf-reset a img { border:none; }
             .sf-reset a:hover { text-decoration:underline; }
             .sf-reset em { font-style:italic; }
             .sf-reset h1, .sf-reset h2 { font: 20px Georgia, "Times New Roman", Times, serif }
-            .sf-reset h2 span { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; }
+            .sf-reset .exception_counter { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; float: left; display: block; }
+            .sf-reset .exception_title { margin-left: 3em; margin-bottom: 0.7em; display: block; }
+            .sf-reset .exception_message { margin-left: 3em; display: block; }
             .sf-reset .traces li { font-size:12px; padding: 2px 4px; list-style-type:decimal; margin-left:20px; }
             .sf-reset .block { background-color:#FFFFFF; padding:10px 28px; margin-bottom:20px;
                 -webkit-border-bottom-right-radius: 16px;
@@ -287,6 +342,7 @@ EOF;
                 border-bottom:1px solid #ccc;
                 border-right:1px solid #ccc;
                 border-left:1px solid #ccc;
+                word-wrap: break-word;
             }
             .sf-reset .block_exception { background-color:#ddd; color: #333; padding:20px;
                 -webkit-border-top-left-radius: 16px;
@@ -301,8 +357,8 @@ EOF;
                 overflow: hidden;
                 word-wrap: break-word;
             }
-            .sf-reset li a { background:none; color:#868686; text-decoration:none; }
-            .sf-reset li a:hover { background:none; color:#313131; text-decoration:underline; }
+            .sf-reset a { background:none; color:#868686; text-decoration:none; }
+            .sf-reset a:hover { background:none; color:#313131; text-decoration:underline; }
             .sf-reset ol { padding: 10px 0; }
             .sf-reset h1 { background-color:#FFFFFF; padding: 15px 28px; margin-bottom: 20px;
                 -webkit-border-radius: 10px;
@@ -319,7 +375,7 @@ EOF;
 <!DOCTYPE html>
 <html>
     <head>
-        <meta charset="UTF-8" />
+        <meta charset="{$this->charset}" />
         <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 */
@@ -338,11 +394,25 @@ EOF;
 EOF;
     }
 
-    private function abbrClass($class)
+    private function formatClass($class)
     {
         $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));
+    }
+
+    private function formatPath($path, $line)
+    {
+        $path = $this->escapeHtml($path);
+        $file = preg_match('#[^/\\\\]*$#', $path, $file) ? $file[0] : $path;
+
+        if ($linkFormat = $this->fileLinkFormat) {
+            $link = strtr($this->escapeHtml($linkFormat), array('%f' => $path, '%l' => (int) $line));
+
+            return sprintf(' in <a href="%s" title="Go to source">%s line %d</a>', $link, $file, $line);
+        }
+
+        return sprintf(' in <a title="%s line %3$d" ondblclick="var f=this.innerHTML;this.innerHTML=this.title;this.title=f;">%s line %d</a>', $path, $file, $line);
     }
 
     /**
@@ -354,19 +424,14 @@ 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)', $this->formatClass($item[1]));
             } elseif ('array' === $item[0]) {
-                $formattedValue = sprintf("<em>array</em>(%s)", is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
+                $formattedValue = sprintf('<em>array</em>(%s)', is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
             } elseif ('string' === $item[0]) {
-                $formattedValue = sprintf("'%s'", htmlspecialchars($item[1], $flags, $this->charset));
+                $formattedValue = sprintf("'%s'", $this->escapeHtml($item[1]));
             } elseif ('null' === $item[0]) {
                 $formattedValue = '<em>null</em>';
             } elseif ('boolean' === $item[0]) {
@@ -374,7 +439,7 @@ EOF;
             } elseif ('resource' === $item[0]) {
                 $formattedValue = '<em>resource</em>';
             } else {
-                $formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], $flags, $this->charset), true));
+                $formattedValue = str_replace("\n", '', var_export($this->escapeHtml((string) $item[1]), true));
             }
 
             $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
@@ -383,6 +448,26 @@ EOF;
         return implode(', ', $result);
     }
 
+    /**
+     * Returns an UTF-8 and HTML encoded string.
+     *
+     * @deprecated since version 2.7, to be removed in 3.0.
+     */
+    protected static function utf8Htmlize($str)
+    {
+        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.7 and will be removed in 3.0.', E_USER_DEPRECATED);
+
+        return htmlspecialchars($str, ENT_QUOTES | (PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), 'UTF-8');
+    }
+
+    /**
+     * HTML-encodes a string.
+     */
+    private function escapeHtml($str)
+    {
+        return htmlspecialchars($str, ENT_QUOTES | (PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), $this->charset);
+    }
+
     /**
      * @internal
      */

FatalErrorHandler/ClassNotFoundFatalErrorHandler.php

@@ -52,29 +52,23 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
             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']
-                );
+                $message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
+                $tail = ' for another namespace?';
             } 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
-                );
+                $message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
+                $tail = '?';
             }
 
-            if ($classes = $this->getClassCandidates($className)) {
-                $message .= sprintf(' Perhaps you need to add a use statement for one of the following: %s.', implode(', ', $classes));
+            if ($candidates = $this->getClassCandidates($className)) {
+                $tail = array_pop($candidates).'"?';
+                if ($candidates) {
+                    $tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
+                } else {
+                    $tail = ' for "'.$tail;
+                }
             }
+            $message .= "\nDid you forget a \"use\" statement".$tail;
 
             return new ClassNotFoundException($message, $exception);
         }
@@ -83,7 +77,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
     /**
      * 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
+     * By default, it looks for PSR-0 and PSR-4 classes registered via a Symfony or a Composer
      * autoloader (that should cover all common cases).
      *
      * @param string $class A class name (without its namespace)
@@ -107,7 +101,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
             if ($function[0] instanceof DebugClassLoader) {
                 $function = $function[0]->getClassLoader();
 
-                // Since 2.5, returning an object from DebugClassLoader::getClassLoader() is @deprecated
+                // @deprecated since version 2.5. Returning an object from DebugClassLoader::getClassLoader() is deprecated.
                 if (is_object($function)) {
                     $function = array($function);
                 }
@@ -124,6 +118,13 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
                     }
                 }
             }
+            if ($function[0] instanceof ComposerClassLoader) {
+                foreach ($function[0]->getPrefixesPsr4() as $prefix => $paths) {
+                    foreach ($paths as $path) {
+                        $classes = array_merge($classes, $this->findClassInPath($path, $class, $prefix));
+                    }
+                }
+            }
         }
 
         return array_unique($classes);
@@ -138,13 +139,13 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
      */
     private function findClassInPath($path, $class, $prefix)
     {
-        if (!$path = realpath($path)) {
+        if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
             return array();
         }
 
         $classes = array();
         $filename = $class.'.php';
-        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
             if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName(), $prefix)) {
                 $classes[] = $class;
             }
@@ -166,13 +167,21 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
             // namespaced class
             $namespacedClass = str_replace(array($path.DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
             // namespaced class (with target dir)
-            $namespacedClassTargetDir = $prefix.str_replace(array($path.DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
+            $prefix.$namespacedClass,
+            // namespaced class (with target dir and separator)
+            $prefix.'\\'.$namespacedClass,
             // PEAR class
             str_replace('\\', '_', $namespacedClass),
             // PEAR class (with target dir)
-            str_replace('\\', '_', $namespacedClassTargetDir),
+            str_replace('\\', '_', $prefix.$namespacedClass),
+            // PEAR class (with target dir and separator)
+            str_replace('\\', '_', $prefix.'\\'.$namespacedClass),
         );
 
+        if ($prefix) {
+            $candidates = array_filter($candidates, function ($candidate) use ($prefix) {return 0 === strpos($candidate, $prefix);});
+        }
+
         // 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.

FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php

@@ -47,21 +47,10 @@ class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
         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']
-            );
+            $message = sprintf('Attempted to call function "%s" from namespace "%s".', $functionName, $namespacePrefix);
         } else {
             $functionName = $fullyQualifiedFunctionName;
-            $message = sprintf(
-                'Attempted to call function "%s" from the global namespace in %s line %d.',
-                $functionName,
-                $error['file'],
-                $error['line']
-            );
+            $message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
         }
 
         $candidates = array();
@@ -81,9 +70,13 @@ class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
 
         if ($candidates) {
             sort($candidates);
-            $message .= ' Did you mean to call: '.implode(', ', array_map(function ($val) {
-                return '"'.$val.'"';
-            }, $candidates)).'?';
+            $last = array_pop($candidates).'"?';
+            if ($candidates) {
+                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
+            } else {
+                $candidates = '"'.$last;
+            }
+            $message .= "\nDid you mean to call ".$candidates;
         }
 
         return new UndefinedFunctionException($message, $exception);

FatalErrorHandler/UndefinedMethodFatalErrorHandler.php

@@ -34,10 +34,15 @@ class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
         $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']);
+        $message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);
+
+        if (!class_exists($className) || null === $methods = get_class_methods($className)) {
+            // failed to get the class or its methods on which an unknown method was called (for example on an anonymous class)
+            return new UndefinedMethodException($message, $exception);
+        }
 
         $candidates = array();
-        foreach (get_class_methods($className) as $definedMethodName) {
+        foreach ($methods as $definedMethodName) {
             $lev = levenshtein($methodName, $definedMethodName);
             if ($lev <= strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
                 $candidates[] = $definedMethodName;
@@ -46,7 +51,14 @@ class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
 
         if ($candidates) {
             sort($candidates);
-            $message .= sprintf(' Did you mean to call: "%s"?', implode('", "', $candidates));
+            $last = array_pop($candidates).'"?';
+            if ($candidates) {
+                $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
+            } else {
+                $candidates = '"'.$last;
+            }
+
+            $message .= "\nDid you mean to call ".$candidates;
         }
 
         return new UndefinedMethodException($message, $exception);

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2004-2015 Fabien Potencier
+Copyright (c) 2004-2017 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

@@ -1,44 +1,13 @@
 Debug Component
 ===============
 
-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;
-
-Debug::enable();
-```
-
-You can also use the tools individually:
-
-```php
-use Symfony\Component\Debug\ErrorHandler;
-use Symfony\Component\Debug\ExceptionHandler;
-
-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);
-}
-```
-
-Note that the `Debug::enable()` call also registers the debug class loader
-from the Symfony ClassLoader component when available.
-
-This component can optionally take advantage of the features of the HttpKernel
-and HttpFoundation components.
+The Debug component provides tools to ease debugging PHP code.
 
 Resources
 ---------
 
-You can run the unit tests with the following command:
-
-    $ cd path/to/Symfony/Component/Debug/
-    $ composer.phar install --dev
-    $ phpunit
+  * [Documentation](https://symfony.com/doc/current/components/debug/index.html)
+  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+  * [Report issues](https://github.com/symfony/symfony/issues) and
+    [send Pull Requests](https://github.com/symfony/symfony/pulls)
+    in the [main Symfony repository](https://github.com/symfony/symfony)

Resources/ext/README.md

@@ -0,0 +1,134 @@
+Symfony Debug Extension for PHP 5
+=================================
+
+This extension publishes several functions to help building powerful debugging tools.
+It is compatible with PHP 5.3, 5.4, 5.5 and 5.6; with ZTS and non-ZTS modes.
+It is not required thus not provided for PHP 7.
+
+symfony_zval_info()
+-------------------
+
+- exposes zval_hash/refcounts, allowing e.g. efficient exploration of arbitrary structures in PHP,
+- does work with references, preventing memory copying.
+
+Its behavior is about the same as:
+
+```php
+<?php
+
+function symfony_zval_info($key, $array, $options = 0)
+{
+
+    // $options is currently not used, but could be in future version.
+
+    if (!array_key_exists($key, $array)) {
+        return null;
+    }
+
+    $info = array(
+        'type' => gettype($array[$key]),
+        'zval_hash' => /* hashed memory address of $array[$key] */,
+        'zval_refcount' => /* internal zval refcount of $array[$key] */,
+        'zval_isref' => /* is_ref status of $array[$key] */,
+    );
+
+    switch ($info['type']) {
+        case 'object':
+            $info += array(
+                'object_class' => get_class($array[$key]),
+                'object_refcount' => /* internal object refcount of $array[$key] */,
+                'object_hash' => spl_object_hash($array[$key]),
+                'object_handle' => /* internal object handle $array[$key] */,
+            );
+            break;
+
+        case 'resource':
+            $info += array(
+                'resource_handle' => (int) $array[$key],
+                'resource_type' => get_resource_type($array[$key]),
+                'resource_refcount' => /* internal resource refcount of $array[$key] */,
+            );
+            break;
+
+        case 'array':
+            $info += array(
+                'array_count' => count($array[$key]),
+            );
+            break;
+
+        case 'string':
+            $info += array(
+                'strlen' => strlen($array[$key]),
+            );
+            break;
+    }
+
+    return $info;
+}
+```
+
+symfony_debug_backtrace()
+-------------------------
+
+This function works like debug_backtrace(), except that it can fetch the full backtrace in case of fatal errors:
+
+```php
+function foo() { fatal(); }
+function bar() { foo(); }
+
+function sd() { var_dump(symfony_debug_backtrace()); }
+
+register_shutdown_function('sd');
+
+bar();
+
+/* Will output
+Fatal error: Call to undefined function fatal() in foo.php on line 42
+array(3) {
+  [0]=>
+  array(2) {
+    ["function"]=>
+    string(2) "sd"
+    ["args"]=>
+    array(0) {
+    }
+  }
+  [1]=>
+  array(4) {
+    ["file"]=>
+    string(7) "foo.php"
+    ["line"]=>
+    int(1)
+    ["function"]=>
+    string(3) "foo"
+    ["args"]=>
+    array(0) {
+    }
+  }
+  [2]=>
+  array(4) {
+    ["file"]=>
+    string(102) "foo.php"
+    ["line"]=>
+    int(2)
+    ["function"]=>
+    string(3) "bar"
+    ["args"]=>
+    array(0) {
+    }
+  }
+}
+*/
+```
+
+Usage
+-----
+
+To enable the extension from source, run:
+
+```
+    phpize
+    ./configure
+    make
+    sudo make install
+```

Resources/ext/config.m4

@@ -0,0 +1,63 @@
+dnl $Id$
+dnl config.m4 for extension symfony_debug
+
+dnl Comments in this file start with the string 'dnl'.
+dnl Remove where necessary. This file will not work
+dnl without editing.
+
+dnl If your extension references something external, use with:
+
+dnl PHP_ARG_WITH(symfony_debug, for symfony_debug support,
+dnl Make sure that the comment is aligned:
+dnl [  --with-symfony_debug             Include symfony_debug support])
+
+dnl Otherwise use enable:
+
+PHP_ARG_ENABLE(symfony_debug, whether to enable symfony_debug support,
+dnl Make sure that the comment is aligned:
+[  --enable-symfony_debug           Enable symfony_debug support])
+
+if test "$PHP_SYMFONY_DEBUG" != "no"; then
+  dnl Write more examples of tests here...
+
+  dnl # --with-symfony_debug -> check with-path
+  dnl SEARCH_PATH="/usr/local /usr"     # you might want to change this
+  dnl SEARCH_FOR="/include/symfony_debug.h"  # you most likely want to change this
+  dnl if test -r $PHP_SYMFONY_DEBUG/$SEARCH_FOR; then # path given as parameter
+  dnl   SYMFONY_DEBUG_DIR=$PHP_SYMFONY_DEBUG
+  dnl else # search default path list
+  dnl   AC_MSG_CHECKING([for symfony_debug files in default path])
+  dnl   for i in $SEARCH_PATH ; do
+  dnl     if test -r $i/$SEARCH_FOR; then
+  dnl       SYMFONY_DEBUG_DIR=$i
+  dnl       AC_MSG_RESULT(found in $i)
+  dnl     fi
+  dnl   done
+  dnl fi
+  dnl
+  dnl if test -z "$SYMFONY_DEBUG_DIR"; then
+  dnl   AC_MSG_RESULT([not found])
+  dnl   AC_MSG_ERROR([Please reinstall the symfony_debug distribution])
+  dnl fi
+
+  dnl # --with-symfony_debug -> add include path
+  dnl PHP_ADD_INCLUDE($SYMFONY_DEBUG_DIR/include)
+
+  dnl # --with-symfony_debug -> check for lib and symbol presence
+  dnl LIBNAME=symfony_debug # you may want to change this
+  dnl LIBSYMBOL=symfony_debug # you most likely want to change this 
+
+  dnl PHP_CHECK_LIBRARY($LIBNAME,$LIBSYMBOL,
+  dnl [
+  dnl   PHP_ADD_LIBRARY_WITH_PATH($LIBNAME, $SYMFONY_DEBUG_DIR/lib, SYMFONY_DEBUG_SHARED_LIBADD)
+  dnl   AC_DEFINE(HAVE_SYMFONY_DEBUGLIB,1,[ ])
+  dnl ],[
+  dnl   AC_MSG_ERROR([wrong symfony_debug lib version or lib not found])
+  dnl ],[
+  dnl   -L$SYMFONY_DEBUG_DIR/lib -lm
+  dnl ])
+  dnl
+  dnl PHP_SUBST(SYMFONY_DEBUG_SHARED_LIBADD)
+
+  PHP_NEW_EXTENSION(symfony_debug, symfony_debug.c, $ext_shared)
+fi

Resources/ext/config.w32

@@ -0,0 +1,13 @@
+// $Id$
+// vim:ft=javascript
+
+// If your extension references something external, use ARG_WITH
+// ARG_WITH("symfony_debug", "for symfony_debug support", "no");
+
+// Otherwise, use ARG_ENABLE
+// ARG_ENABLE("symfony_debug", "enable symfony_debug support", "no");
+
+if (PHP_SYMFONY_DEBUG != "no") {
+	EXTENSION("symfony_debug", "symfony_debug.c");
+}
+

Resources/ext/php_symfony_debug.h

@@ -0,0 +1,60 @@
+/*
+ * 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.
+ */
+
+#ifndef PHP_SYMFONY_DEBUG_H
+#define PHP_SYMFONY_DEBUG_H
+
+extern zend_module_entry symfony_debug_module_entry;
+#define phpext_symfony_debug_ptr &symfony_debug_module_entry
+
+#define PHP_SYMFONY_DEBUG_VERSION "2.7"
+
+#ifdef PHP_WIN32
+#	define PHP_SYMFONY_DEBUG_API __declspec(dllexport)
+#elif defined(__GNUC__) && __GNUC__ >= 4
+#	define PHP_SYMFONY_DEBUG_API __attribute__ ((visibility("default")))
+#else
+#	define PHP_SYMFONY_DEBUG_API
+#endif
+
+#ifdef ZTS
+#include "TSRM.h"
+#endif
+
+ZEND_BEGIN_MODULE_GLOBALS(symfony_debug)
+	intptr_t req_rand_init;
+	void (*old_error_cb)(int type, const char *error_filename, const uint error_lineno, const char *format, va_list args);
+	zval *debug_bt;
+ZEND_END_MODULE_GLOBALS(symfony_debug)
+
+PHP_MINIT_FUNCTION(symfony_debug);
+PHP_MSHUTDOWN_FUNCTION(symfony_debug);
+PHP_RINIT_FUNCTION(symfony_debug);
+PHP_RSHUTDOWN_FUNCTION(symfony_debug);
+PHP_MINFO_FUNCTION(symfony_debug);
+PHP_GINIT_FUNCTION(symfony_debug);
+PHP_GSHUTDOWN_FUNCTION(symfony_debug);
+
+PHP_FUNCTION(symfony_zval_info);
+PHP_FUNCTION(symfony_debug_backtrace);
+
+static char *_symfony_debug_memory_address_hash(void * TSRMLS_DC);
+static const char *_symfony_debug_zval_type(zval *);
+static const char* _symfony_debug_get_resource_type(long TSRMLS_DC);
+static int _symfony_debug_get_resource_refcount(long TSRMLS_DC);
+
+void symfony_debug_error_cb(int type, const char *error_filename, const uint error_lineno, const char *format, va_list args);
+
+#ifdef ZTS
+#define SYMFONY_DEBUG_G(v) TSRMG(symfony_debug_globals_id, zend_symfony_debug_globals *, v)
+#else
+#define SYMFONY_DEBUG_G(v) (symfony_debug_globals.v)
+#endif
+
+#endif	/* PHP_SYMFONY_DEBUG_H */

Resources/ext/symfony_debug.c

@@ -0,0 +1,283 @@
+/*
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "php.h"
+#ifdef ZTS
+#include "TSRM.h"
+#endif
+#include "php_ini.h"
+#include "ext/standard/info.h"
+#include "php_symfony_debug.h"
+#include "ext/standard/php_rand.h"
+#include "ext/standard/php_lcg.h"
+#include "ext/spl/php_spl.h"
+#include "Zend/zend_gc.h"
+#include "Zend/zend_builtin_functions.h"
+#include "Zend/zend_extensions.h" /* for ZEND_EXTENSION_API_NO */
+#include "ext/standard/php_array.h"
+#include "Zend/zend_interfaces.h"
+#include "SAPI.h"
+
+#define IS_PHP_53 ZEND_EXTENSION_API_NO == 220090626
+
+ZEND_DECLARE_MODULE_GLOBALS(symfony_debug)
+
+ZEND_BEGIN_ARG_INFO_EX(symfony_zval_arginfo, 0, 0, 2)
+	ZEND_ARG_INFO(0, key)
+	ZEND_ARG_ARRAY_INFO(0, array, 0)
+	ZEND_ARG_INFO(0, options)
+ZEND_END_ARG_INFO()
+
+const zend_function_entry symfony_debug_functions[] = {
+	PHP_FE(symfony_zval_info,	symfony_zval_arginfo)
+	PHP_FE(symfony_debug_backtrace, NULL)
+	PHP_FE_END
+};
+
+PHP_FUNCTION(symfony_debug_backtrace)
+{
+	if (zend_parse_parameters_none() == FAILURE) {
+		return;
+	}
+#if IS_PHP_53
+	zend_fetch_debug_backtrace(return_value, 1, 0 TSRMLS_CC);
+#else
+	zend_fetch_debug_backtrace(return_value, 1, 0, 0 TSRMLS_CC);
+#endif
+
+	if (!SYMFONY_DEBUG_G(debug_bt)) {
+		return;
+	}
+
+	php_array_merge(Z_ARRVAL_P(return_value), Z_ARRVAL_P(SYMFONY_DEBUG_G(debug_bt)), 0 TSRMLS_CC);
+}
+
+PHP_FUNCTION(symfony_zval_info)
+{
+	zval *key = NULL, *arg = NULL;
+	zval **data = NULL;
+	HashTable *array = NULL;
+	long options = 0;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zh|l", &key, &array, &options) == FAILURE) {
+		return;
+	}
+
+	switch (Z_TYPE_P(key)) {
+		case IS_STRING:
+			if (zend_symtable_find(array, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, (void **)&data) == FAILURE) {
+				return;
+			}
+		break;
+		case IS_LONG:
+			if (zend_hash_index_find(array, Z_LVAL_P(key), (void **)&data)) {
+				return;
+			}
+		break;
+	}
+
+	arg = *data;
+
+	array_init(return_value);
+
+	add_assoc_string(return_value, "type", (char *)_symfony_debug_zval_type(arg), 1);
+	add_assoc_stringl(return_value, "zval_hash", _symfony_debug_memory_address_hash((void *)arg TSRMLS_CC), 16, 0);
+	add_assoc_long(return_value, "zval_refcount", Z_REFCOUNT_P(arg));
+	add_assoc_bool(return_value, "zval_isref", (zend_bool)Z_ISREF_P(arg));
+
+	if (Z_TYPE_P(arg) == IS_OBJECT) {
+		char hash[33] = {0};
+
+		php_spl_object_hash(arg, (char *)hash TSRMLS_CC);
+		add_assoc_stringl(return_value, "object_class", (char *)Z_OBJCE_P(arg)->name, Z_OBJCE_P(arg)->name_length, 1);
+		add_assoc_long(return_value, "object_refcount", EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(arg)].bucket.obj.refcount);
+		add_assoc_string(return_value, "object_hash", hash, 1);
+		add_assoc_long(return_value, "object_handle", Z_OBJ_HANDLE_P(arg));
+	} else if (Z_TYPE_P(arg) == IS_ARRAY) {
+		add_assoc_long(return_value, "array_count", zend_hash_num_elements(Z_ARRVAL_P(arg)));
+	} else if(Z_TYPE_P(arg) == IS_RESOURCE) {
+		add_assoc_long(return_value, "resource_handle", Z_LVAL_P(arg));
+		add_assoc_string(return_value, "resource_type", (char *)_symfony_debug_get_resource_type(Z_LVAL_P(arg) TSRMLS_CC), 1);
+		add_assoc_long(return_value, "resource_refcount", _symfony_debug_get_resource_refcount(Z_LVAL_P(arg) TSRMLS_CC));
+	} else if (Z_TYPE_P(arg) == IS_STRING) {
+		add_assoc_long(return_value, "strlen", Z_STRLEN_P(arg));
+	}
+}
+
+void symfony_debug_error_cb(int type, const char *error_filename, const uint error_lineno, const char *format, va_list args)
+{
+	TSRMLS_FETCH();
+	zval *retval;
+
+	switch (type) {
+		case E_ERROR:
+		case E_PARSE:
+		case E_CORE_ERROR:
+		case E_CORE_WARNING:
+		case E_COMPILE_ERROR:
+		case E_COMPILE_WARNING:
+			ALLOC_INIT_ZVAL(retval);
+#if IS_PHP_53
+			zend_fetch_debug_backtrace(retval, 1, 0 TSRMLS_CC);
+#else
+			zend_fetch_debug_backtrace(retval, 1, 0, 0 TSRMLS_CC);
+#endif
+			SYMFONY_DEBUG_G(debug_bt) = retval;
+	}
+
+	SYMFONY_DEBUG_G(old_error_cb)(type, error_filename, error_lineno, format, args);
+}
+
+static const char* _symfony_debug_get_resource_type(long rsid TSRMLS_DC)
+{
+	const char *res_type;
+	res_type = zend_rsrc_list_get_rsrc_type(rsid TSRMLS_CC);
+
+	if (!res_type) {
+		return "Unknown";
+	}
+
+	return res_type;
+}
+
+static int _symfony_debug_get_resource_refcount(long rsid TSRMLS_DC)
+{
+	zend_rsrc_list_entry *le;
+
+	if (zend_hash_index_find(&EG(regular_list), rsid, (void **) &le)==SUCCESS) {
+		return le->refcount;
+	}
+
+	return 0;
+}
+
+static char *_symfony_debug_memory_address_hash(void *address TSRMLS_DC)
+{
+	char *result = NULL;
+	intptr_t address_rand;
+
+	if (!SYMFONY_DEBUG_G(req_rand_init)) {
+		if (!BG(mt_rand_is_seeded)) {
+			php_mt_srand(GENERATE_SEED() TSRMLS_CC);
+		}
+		SYMFONY_DEBUG_G(req_rand_init) = (intptr_t)php_mt_rand(TSRMLS_C);
+	}
+
+	address_rand = (intptr_t)address ^ SYMFONY_DEBUG_G(req_rand_init);
+
+	spprintf(&result, 17, "%016zx", address_rand);
+
+	return result;
+}
+
+static const char *_symfony_debug_zval_type(zval *zv)
+{
+	switch (Z_TYPE_P(zv)) {
+		case IS_NULL:
+			return "NULL";
+			break;
+
+		case IS_BOOL:
+			return "boolean";
+			break;
+
+		case IS_LONG:
+			return "integer";
+			break;
+
+		case IS_DOUBLE:
+			return "double";
+			break;
+
+		case IS_STRING:
+			return "string";
+			break;
+
+		case IS_ARRAY:
+			return "array";
+			break;
+
+		case IS_OBJECT:
+			return "object";
+
+		case IS_RESOURCE:
+			return "resource";
+
+		default:
+			return "unknown type";
+	}
+}
+
+zend_module_entry symfony_debug_module_entry = {
+	STANDARD_MODULE_HEADER,
+	"symfony_debug",
+	symfony_debug_functions,
+	PHP_MINIT(symfony_debug),
+	PHP_MSHUTDOWN(symfony_debug),
+	PHP_RINIT(symfony_debug),
+	PHP_RSHUTDOWN(symfony_debug),
+	PHP_MINFO(symfony_debug),
+	PHP_SYMFONY_DEBUG_VERSION,
+	PHP_MODULE_GLOBALS(symfony_debug),
+	PHP_GINIT(symfony_debug),
+	PHP_GSHUTDOWN(symfony_debug),
+	NULL,
+	STANDARD_MODULE_PROPERTIES_EX
+};
+
+#ifdef COMPILE_DL_SYMFONY_DEBUG
+ZEND_GET_MODULE(symfony_debug)
+#endif
+
+PHP_GINIT_FUNCTION(symfony_debug)
+{
+	memset(symfony_debug_globals, 0 , sizeof(*symfony_debug_globals));
+}
+
+PHP_GSHUTDOWN_FUNCTION(symfony_debug)
+{
+
+}
+
+PHP_MINIT_FUNCTION(symfony_debug)
+{
+	SYMFONY_DEBUG_G(old_error_cb) = zend_error_cb;
+	zend_error_cb                 = symfony_debug_error_cb;
+
+	return SUCCESS;
+}
+
+PHP_MSHUTDOWN_FUNCTION(symfony_debug)
+{
+	zend_error_cb = SYMFONY_DEBUG_G(old_error_cb);
+
+	return SUCCESS;
+}
+
+PHP_RINIT_FUNCTION(symfony_debug)
+{
+	return SUCCESS;
+}
+
+PHP_RSHUTDOWN_FUNCTION(symfony_debug)
+{
+	return SUCCESS;
+}
+
+PHP_MINFO_FUNCTION(symfony_debug)
+{
+	php_info_print_table_start();
+	php_info_print_table_header(2, "Symfony Debug support", "enabled");
+	php_info_print_table_header(2, "Symfony Debug version", PHP_SYMFONY_DEBUG_VERSION);
+	php_info_print_table_end();
+}

Resources/ext/tests/001.phpt

@@ -0,0 +1,153 @@
+--TEST--
+Test symfony_zval_info API
+--SKIPIF--
+<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+--FILE--
+<?php
+
+$int = 42;
+$float = 42.42;
+$str = 'foobar';
+$object = new StdClass();
+$array = array('foo', 'bar');
+$resource = tmpfile();
+$null = null;
+$bool = true;
+
+$anotherint = 42;
+$refcount2 = &$anotherint;
+
+$var = array(
+    'int' => $int,
+    'float' => $float,
+    'str' => $str,
+    'object' => $object,
+    'array' => $array,
+    'resource' => $resource,
+    'null' => $null,
+    'bool' => $bool,
+    'refcount' => &$refcount2,
+);
+
+var_dump(symfony_zval_info('int', $var));
+var_dump(symfony_zval_info('float', $var));
+var_dump(symfony_zval_info('str', $var));
+var_dump(symfony_zval_info('object', $var));
+var_dump(symfony_zval_info('array', $var));
+var_dump(symfony_zval_info('resource', $var));
+var_dump(symfony_zval_info('null', $var));
+var_dump(symfony_zval_info('bool', $var));
+
+var_dump(symfony_zval_info('refcount', $var));
+var_dump(symfony_zval_info('not-exist', $var));
+?>
+--EXPECTF--
+array(4) {
+  ["type"]=>
+  string(7) "integer"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+}
+array(4) {
+  ["type"]=>
+  string(6) "double"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+}
+array(5) {
+  ["type"]=>
+  string(6) "string"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+  ["strlen"]=>
+  int(6)
+}
+array(8) {
+  ["type"]=>
+  string(6) "object"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+  ["object_class"]=>
+  string(8) "stdClass"
+  ["object_refcount"]=>
+  int(1)
+  ["object_hash"]=>
+  string(32) "%s"
+  ["object_handle"]=>
+  int(%d)
+}
+array(5) {
+  ["type"]=>
+  string(5) "array"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+  ["array_count"]=>
+  int(2)
+}
+array(7) {
+  ["type"]=>
+  string(8) "resource"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+  ["resource_handle"]=>
+  int(%d)
+  ["resource_type"]=>
+  string(6) "stream"
+  ["resource_refcount"]=>
+  int(1)
+}
+array(4) {
+  ["type"]=>
+  string(4) "NULL"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+}
+array(4) {
+  ["type"]=>
+  string(7) "boolean"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(2)
+  ["zval_isref"]=>
+  bool(false)
+}
+array(4) {
+  ["type"]=>
+  string(7) "integer"
+  ["zval_hash"]=>
+  string(16) "%s"
+  ["zval_refcount"]=>
+  int(3)
+  ["zval_isref"]=>
+  bool(true)
+}
+NULL

Resources/ext/tests/002.phpt

@@ -0,0 +1,63 @@
+--TEST--
+Test symfony_debug_backtrace in case of fatal error
+--SKIPIF--
+<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+--FILE--
+<?php
+
+function bar()
+{
+    foo();
+}
+
+function foo()
+{
+    notexist();
+}
+
+function bt()
+{
+    print_r(symfony_debug_backtrace());
+}
+
+register_shutdown_function('bt');
+
+bar();
+
+?>
+--EXPECTF--
+Fatal error: Call to undefined function notexist() in %s on line %d
+Array
+(
+    [0] => Array
+        (
+            [function] => bt
+            [args] => Array
+                (
+                )
+
+        )
+
+    [1] => Array
+        (
+            [file] => %s
+            [line] => %d
+            [function] => foo
+            [args] => Array
+                (
+                )
+
+        )
+
+    [2] => Array
+        (
+            [file] => %s
+            [line] => %d
+            [function] => bar
+            [args] => Array
+                (
+                )
+
+        )
+
+)

Resources/ext/tests/002_1.phpt

@@ -0,0 +1,46 @@
+--TEST--
+Test symfony_debug_backtrace in case of non fatal error
+--SKIPIF--
+<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+--FILE--
+<?php
+
+function bar()
+{
+    bt();
+}
+
+function bt()
+{
+    print_r(symfony_debug_backtrace());
+}
+
+bar();
+
+?>
+--EXPECTF--
+Array
+(
+    [0] => Array
+        (
+            [file] => %s
+            [line] => %d
+            [function] => bt
+            [args] => Array
+                (
+                )
+
+        )
+
+    [1] => Array
+        (
+            [file] => %s
+            [line] => %d
+            [function] => bar
+            [args] => Array
+                (
+                )
+
+        )
+
+)

Resources/ext/tests/003.phpt

@@ -0,0 +1,85 @@
+--TEST--
+Test ErrorHandler in case of fatal error
+--SKIPIF--
+<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+--FILE--
+<?php
+
+namespace Psr\Log;
+
+class LogLevel
+{
+    const EMERGENCY = 'emergency';
+    const ALERT = 'alert';
+    const CRITICAL = 'critical';
+    const ERROR = 'error';
+    const WARNING = 'warning';
+    const NOTICE = 'notice';
+    const INFO = 'info';
+    const DEBUG = 'debug';
+}
+
+namespace Symfony\Component\Debug;
+
+$dir = __DIR__.'/../../../';
+require $dir.'ErrorHandler.php';
+require $dir.'Exception/FatalErrorException.php';
+require $dir.'Exception/UndefinedFunctionException.php';
+require $dir.'FatalErrorHandler/FatalErrorHandlerInterface.php';
+require $dir.'FatalErrorHandler/ClassNotFoundFatalErrorHandler.php';
+require $dir.'FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php';
+require $dir.'FatalErrorHandler/UndefinedMethodFatalErrorHandler.php';
+
+function bar()
+{
+    foo();
+}
+
+function foo()
+{
+    notexist();
+}
+
+$handler = ErrorHandler::register();
+$handler->setExceptionHandler('print_r');
+
+if (function_exists('xdebug_disable')) {
+    xdebug_disable();
+}
+
+bar();
+?>
+--EXPECTF--
+Fatal error: Call to undefined function Symfony\Component\Debug\notexist() in %s on line %d
+Symfony\Component\Debug\Exception\UndefinedFunctionException Object
+(
+    [message:protected] => Attempted to call function "notexist" from namespace "Symfony\Component\Debug".
+    [string:Exception:private] => 
+    [code:protected] => 0
+    [file:protected] => %s
+    [line:protected] => %d
+    [trace:Exception:private] => Array
+        (
+            [0] => Array
+                (
+%A                    [function] => Symfony\Component\Debug\foo
+%A                    [args] => Array
+                        (
+                        )
+
+                )
+
+            [1] => Array
+                (
+%A                    [function] => Symfony\Component\Debug\bar
+%A                    [args] => Array
+                        (
+                        )
+
+                )
+%A
+        )
+
+    [previous:Exception:private] => 
+    [severity:protected] => 1
+)

Tests/DebugClassLoaderTest.php

@@ -13,12 +13,11 @@ 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.
+     * @var int Error reporting level before running tests
      */
     private $errorReporting;
 
@@ -61,6 +60,13 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
     public function testUnsilencing()
     {
+        if (PHP_VERSION_ID >= 70000) {
+            $this->markTestSkipped('PHP7 throws exceptions, unsilencing is not required anymore.');
+        }
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM is not handled in this test case.');
+        }
+
         ob_start();
 
         $this->iniSet('log_errors', 0);
@@ -82,6 +88,9 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
         if (class_exists('Symfony\Component\Debug\Exception\ContextErrorException', false)) {
             $this->markTestSkipped('The ContextErrorException class is already loaded.');
         }
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM is not handled in this test case.');
+        }
 
         ErrorHandler::register();
 
@@ -100,14 +109,19 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
             // 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) {
+            if (PHP_VERSION_ID < 70000) {
+                $this->assertRegExp('/^Runtime Notice: Declaration/', $exception->getMessage());
+                $this->assertEquals(E_STRICT, $exception->getSeverity());
+            } else {
+                $this->assertRegExp('/^Warning: Declaration/', $exception->getMessage());
+                $this->assertEquals(E_WARNING, $exception->getSeverity());
+            }
+        } catch (\Exception $exception) {
             restore_error_handler();
             restore_exception_handler();
 
-            throw $e;
+            throw $exception;
         }
     }
 
@@ -121,6 +135,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \RuntimeException
+     * @expectedExceptionMessage Case mismatch between class and real file names
      */
     public function testFileCaseMismatch()
     {
@@ -153,6 +168,109 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
     {
         $this->assertTrue(class_exists(__NAMESPACE__.'\Fixtures\ClassAlias', true));
     }
+
+    /**
+     * @dataProvider provideDeprecatedSuper
+     */
+    public function testDeprecatedSuper($class, $super, $type)
+    {
+        set_error_handler(function () { return false; });
+        $e = error_reporting(0);
+        trigger_error('', E_USER_DEPRECATED);
+
+        class_exists('Test\\'.__NAMESPACE__.'\\'.$class, true);
+
+        error_reporting($e);
+        restore_error_handler();
+
+        $lastError = error_get_last();
+        unset($lastError['file'], $lastError['line']);
+
+        $xError = array(
+            'type' => E_USER_DEPRECATED,
+            'message' => 'The Test\Symfony\Component\Debug\Tests\\'.$class.' class '.$type.' Symfony\Component\Debug\Tests\Fixtures\\'.$super.' that is deprecated but this is a test deprecation notice.',
+        );
+
+        $this->assertSame($xError, $lastError);
+    }
+
+    public function provideDeprecatedSuper()
+    {
+        return array(
+            array('DeprecatedInterfaceClass', 'DeprecatedInterface', 'implements'),
+            array('DeprecatedParentClass', 'DeprecatedClass', 'extends'),
+        );
+    }
+
+    public function testInterfaceExtendsDeprecatedInterface()
+    {
+        set_error_handler(function () { return false; });
+        $e = error_reporting(0);
+        trigger_error('', E_USER_NOTICE);
+
+        class_exists('Test\\'.__NAMESPACE__.'\\NonDeprecatedInterfaceClass', true);
+
+        error_reporting($e);
+        restore_error_handler();
+
+        $lastError = error_get_last();
+        unset($lastError['file'], $lastError['line']);
+
+        $xError = array(
+            'type' => E_USER_NOTICE,
+            'message' => '',
+        );
+
+        $this->assertSame($xError, $lastError);
+    }
+
+    public function testDeprecatedSuperInSameNamespace()
+    {
+        set_error_handler(function () { return false; });
+        $e = error_reporting(0);
+        trigger_error('', E_USER_NOTICE);
+
+        class_exists('Symfony\Bridge\Debug\Tests\Fixtures\ExtendsDeprecatedParent', true);
+
+        error_reporting($e);
+        restore_error_handler();
+
+        $lastError = error_get_last();
+        unset($lastError['file'], $lastError['line']);
+
+        $xError = array(
+            'type' => E_USER_NOTICE,
+            'message' => '',
+        );
+
+        $this->assertSame($xError, $lastError);
+    }
+
+    public function testReservedForPhp7()
+    {
+        if (PHP_VERSION_ID >= 70000) {
+            $this->markTestSkipped('PHP7 already prevents using reserved names.');
+        }
+
+        set_error_handler(function () { return false; });
+        $e = error_reporting(0);
+        trigger_error('', E_USER_NOTICE);
+
+        class_exists('Test\\'.__NAMESPACE__.'\\Float', true);
+
+        error_reporting($e);
+        restore_error_handler();
+
+        $lastError = error_get_last();
+        unset($lastError['file'], $lastError['line']);
+
+        $xError = array(
+            'type' => E_USER_DEPRECATED,
+            'message' => 'Test\Symfony\Component\Debug\Tests\Float uses a reserved class name (Float) that will break on PHP 7 and higher',
+        );
+
+        $this->assertSame($xError, $lastError);
+    }
 }
 
 class ClassLoader
@@ -168,6 +286,8 @@ class ClassLoader
 
     public function findFile($class)
     {
+        $fixtureDir = __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR;
+
         if (__NAMESPACE__.'\TestingUnsilencing' === $class) {
             eval('-- parse error --');
         } elseif (__NAMESPACE__.'\TestingStacking' === $class) {
@@ -175,13 +295,25 @@ class ClassLoader
         } elseif (__NAMESPACE__.'\TestingCaseMismatch' === $class) {
             eval('namespace '.__NAMESPACE__.'; class TestingCaseMisMatch {}');
         } elseif (__NAMESPACE__.'\Fixtures\CaseMismatch' === $class) {
-            return __DIR__.'/Fixtures/CaseMismatch.php';
+            return $fixtureDir.'CaseMismatch.php';
         } elseif (__NAMESPACE__.'\Fixtures\Psr4CaseMismatch' === $class) {
-            return __DIR__.'/Fixtures/psr4/Psr4CaseMismatch.php';
+            return $fixtureDir.'psr4'.DIRECTORY_SEPARATOR.'Psr4CaseMismatch.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0' === $class) {
-            return __DIR__.'/Fixtures/reallyNotPsr0.php';
+            return $fixtureDir.'reallyNotPsr0.php';
         } elseif (__NAMESPACE__.'\Fixtures\NotPSR0bis' === $class) {
-            return __DIR__.'/Fixtures/notPsr0Bis.php';
+            return $fixtureDir.'notPsr0Bis.php';
+        } elseif (__NAMESPACE__.'\Fixtures\DeprecatedInterface' === $class) {
+            return $fixtureDir.'DeprecatedInterface.php';
+        } elseif ('Symfony\Bridge\Debug\Tests\Fixtures\ExtendsDeprecatedParent' === $class) {
+            eval('namespace Symfony\Bridge\Debug\Tests\Fixtures; class ExtendsDeprecatedParent extends \\'.__NAMESPACE__.'\Fixtures\DeprecatedClass {}');
+        } elseif ('Test\\'.__NAMESPACE__.'\DeprecatedParentClass' === $class) {
+            eval('namespace Test\\'.__NAMESPACE__.'; class DeprecatedParentClass extends \\'.__NAMESPACE__.'\Fixtures\DeprecatedClass {}');
+        } elseif ('Test\\'.__NAMESPACE__.'\DeprecatedInterfaceClass' === $class) {
+            eval('namespace Test\\'.__NAMESPACE__.'; class DeprecatedInterfaceClass implements \\'.__NAMESPACE__.'\Fixtures\DeprecatedInterface {}');
+        } elseif ('Test\\'.__NAMESPACE__.'\NonDeprecatedInterfaceClass' === $class) {
+            eval('namespace Test\\'.__NAMESPACE__.'; class NonDeprecatedInterfaceClass implements \\'.__NAMESPACE__.'\Fixtures\NonDeprecatedInterface {}');
+        } elseif ('Test\\'.__NAMESPACE__.'\Float' === $class) {
+            eval('namespace Test\\'.__NAMESPACE__.'; class Float {}');
         }
     }
 }

Tests/ErrorHandlerTest.php

@@ -11,30 +11,57 @@
 
 namespace Symfony\Component\Debug\Tests;
 
+use Psr\Log\LogLevel;
 use Symfony\Component\Debug\ErrorHandler;
+use Symfony\Component\Debug\BufferingLogger;
 use Symfony\Component\Debug\Exception\ContextErrorException;
 
 /**
  * ErrorHandlerTest.
  *
  * @author Robert Schönthal <seroscho@googlemail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
  */
 class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
 {
-    /**
-     * @var int Error reporting level before running tests.
-     */
-    protected $errorReporting;
-
-    public function setUp()
+    public function testRegister()
     {
-        $this->errorReporting = error_reporting(E_ALL | E_STRICT);
-        $this->iniSet('display_errors', '1');
-    }
+        $handler = ErrorHandler::register();
 
-    public function tearDown()
-    {
-        error_reporting($this->errorReporting);
+        try {
+            $this->assertInstanceOf('Symfony\Component\Debug\ErrorHandler', $handler);
+            $this->assertSame($handler, ErrorHandler::register());
+
+            $newHandler = new ErrorHandler();
+
+            $this->assertSame($newHandler, ErrorHandler::register($newHandler, false));
+            $h = set_error_handler('var_dump');
+            restore_error_handler();
+            $this->assertSame(array($handler, 'handleError'), $h);
+
+            try {
+                $this->assertSame($newHandler, ErrorHandler::register($newHandler, true));
+                $h = set_error_handler('var_dump');
+                restore_error_handler();
+                $this->assertSame(array($newHandler, 'handleError'), $h);
+            } catch (\Exception $e) {
+            }
+
+            restore_error_handler();
+            restore_exception_handler();
+
+            if (isset($e)) {
+                throw $e;
+            }
+        } catch (\Exception $e) {
+        }
+
+        restore_error_handler();
+        restore_exception_handler();
+
+        if (isset($e)) {
+            throw $e;
+        }
     }
 
     public function testNotice()
@@ -47,15 +74,17 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
         } catch (ContextErrorException $exception) {
             // if an exception is thrown, the test passed
             restore_error_handler();
+            restore_exception_handler();
+
             $this->assertEquals(E_NOTICE, $exception->getSeverity());
             $this->assertEquals(__FILE__, $exception->getFile());
-            $this->assertRegexp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
+            $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('handleError', $trace[0]['function']);
             $this->assertEquals('->', $trace[0]['type']);
 
             $this->assertEquals(__FILE__, $trace[1]['file']);
@@ -63,16 +92,16 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
             $this->assertEquals('triggerNotice', $trace[1]['function']);
             $this->assertEquals('::', $trace[1]['type']);
 
+            $this->assertEquals(__FILE__, $trace[1]['file']);
             $this->assertEquals(__CLASS__, $trace[2]['class']);
-            $this->assertEquals('testNotice', $trace[2]['function']);
+            $this->assertEquals(__FUNCTION__, $trace[2]['function']);
             $this->assertEquals('->', $trace[2]['type']);
         } catch (\Exception $e) {
             restore_error_handler();
+            restore_exception_handler();
 
             throw $e;
         }
-
-        restore_error_handler();
     }
 
     // dummy function to test trace in error handler.
@@ -86,80 +115,452 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
     public function testConstruct()
     {
         try {
-            $handler = ErrorHandler::register(3);
-
-            $level = new \ReflectionProperty($handler, 'level');
-            $level->setAccessible(true);
-
-            $this->assertEquals(3, $level->getValue($handler));
+            $handler = ErrorHandler::register();
+            $handler->throwAt(3, true);
+            $this->assertEquals(3 | E_RECOVERABLE_ERROR | E_USER_ERROR, $handler->throwAt(0));
 
             restore_error_handler();
+            restore_exception_handler();
         } catch (\Exception $e) {
             restore_error_handler();
+            restore_exception_handler();
 
             throw $e;
         }
     }
 
-    public function testHandle()
+    public function testDefaultLogger()
     {
         try {
-            $handler = ErrorHandler::register(0);
-            $this->assertFalse($handler->handle(0, 'foo', 'foo.php', 12, array()));
+            $handler = ErrorHandler::register();
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+
+            $handler->setDefaultLogger($logger, E_NOTICE);
+            $handler->setDefaultLogger($logger, array(E_USER_NOTICE => LogLevel::CRITICAL));
+
+            $loggers = array(
+                E_DEPRECATED => array(null, LogLevel::INFO),
+                E_USER_DEPRECATED => array(null, LogLevel::INFO),
+                E_NOTICE => array($logger, LogLevel::WARNING),
+                E_USER_NOTICE => array($logger, LogLevel::CRITICAL),
+                E_STRICT => array(null, LogLevel::WARNING),
+                E_WARNING => array(null, LogLevel::WARNING),
+                E_USER_WARNING => array(null, LogLevel::WARNING),
+                E_COMPILE_WARNING => array(null, LogLevel::WARNING),
+                E_CORE_WARNING => array(null, LogLevel::WARNING),
+                E_USER_ERROR => array(null, LogLevel::CRITICAL),
+                E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
+                E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
+                E_PARSE => array(null, LogLevel::CRITICAL),
+                E_ERROR => array(null, LogLevel::CRITICAL),
+                E_CORE_ERROR => array(null, LogLevel::CRITICAL),
+            );
+            $this->assertSame($loggers, $handler->setLoggers(array()));
 
             restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
 
-            $handler = ErrorHandler::register(3);
-            $this->assertFalse($handler->handle(4, 'foo', 'foo.php', 12, array()));
+            throw $e;
+        }
+    }
+
+    public function testHandleError()
+    {
+        try {
+            $handler = ErrorHandler::register();
+            $handler->throwAt(0, true);
+            $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, array()));
 
             restore_error_handler();
+            restore_exception_handler();
 
-            $handler = ErrorHandler::register(3);
+            $handler = ErrorHandler::register();
+            $handler->throwAt(3, true);
+            $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+            restore_exception_handler();
+
+            $handler = ErrorHandler::register();
+            $handler->throwAt(3, true);
             try {
-                $handler->handle(111, 'foo', 'foo.php', 12, array());
+                $handler->handleError(4, '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('Parse Error: foo', $e->getMessage());
+                $this->assertSame(4, $e->getSeverity());
                 $this->assertSame('foo.php', $e->getFile());
                 $this->assertSame(12, $e->getLine());
             }
 
             restore_error_handler();
+            restore_exception_handler();
 
-            $handler = ErrorHandler::register(E_USER_DEPRECATED);
-            $this->assertFalse($handler->handle(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $handler = ErrorHandler::register();
+            $handler->throwAt(E_USER_DEPRECATED, true);
+            $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
 
             restore_error_handler();
+            restore_exception_handler();
 
-            $handler = ErrorHandler::register(E_DEPRECATED);
-            $this->assertFalse($handler->handle(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
+            $handler = ErrorHandler::register();
+            $handler->throwAt(E_DEPRECATED, true);
+            $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, array()));
 
             restore_error_handler();
+            restore_exception_handler();
 
-            $logger = $this->getMock('Psr\Log\LoggerInterface');
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $that = $this;
-            $warnArgCheck = function ($message, $context) use ($that) {
+            $warnArgCheck = function ($logLevel, $message, $context) use ($that) {
+                $that->assertEquals('info', $logLevel);
                 $that->assertEquals('foo', $message);
                 $that->assertArrayHasKey('type', $context);
-                $that->assertEquals($context['type'], ErrorHandler::TYPE_DEPRECATION);
+                $that->assertEquals($context['type'], E_USER_DEPRECATED);
                 $that->assertArrayHasKey('stack', $context);
                 $that->assertInternalType('array', $context['stack']);
             };
 
             $logger
                 ->expects($this->once())
-                ->method('warning')
+                ->method('log')
                 ->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()));
+            $handler = ErrorHandler::register();
+            $handler->setDefaultLogger($logger, E_USER_DEPRECATED);
+            $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, array()));
 
             restore_error_handler();
+            restore_exception_handler();
 
-            $logger = $this->getMock('Psr\Log\LoggerInterface');
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+
+            $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();
+            $handler->setDefaultLogger($logger, E_NOTICE);
+            $handler->screamAt(E_NOTICE);
+            unset($undefVar);
+            @$undefVar++;
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    public function testHandleUserError()
+    {
+        try {
+            $handler = ErrorHandler::register();
+            $handler->throwAt(0, true);
+
+            $e = null;
+            $x = new \Exception('Foo');
+
+            try {
+                $f = new Fixtures\ToStringThrower($x);
+                $f .= ''; // Trigger $f->__toString()
+            } catch (\Exception $e) {
+            }
+
+            $this->assertSame($x, $e);
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    public function testHandleDeprecation()
+    {
+        $that = $this;
+        $logArgCheck = function ($level, $message, $context) use ($that) {
+            $that->assertEquals(LogLevel::INFO, $level);
+            $that->assertArrayHasKey('level', $context);
+            $that->assertEquals(E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED, $context['level']);
+            $that->assertArrayHasKey('stack', $context);
+        };
+
+        $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+        $logger
+            ->expects($this->once())
+            ->method('log')
+            ->will($this->returnCallback($logArgCheck))
+        ;
+
+        $handler = new ErrorHandler();
+        $handler->setDefaultLogger($logger);
+        @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, array());
+    }
+
+    public function testHandleException()
+    {
+        try {
+            $handler = ErrorHandler::register();
+
+            $exception = new \Exception('foo');
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+
+            $that = $this;
+            $logArgCheck = function ($level, $message, $context) use ($that) {
+                $that->assertEquals('Uncaught Exception: foo', $message);
+                $that->assertArrayHasKey('type', $context);
+                $that->assertEquals($context['type'], E_ERROR);
+            };
+
+            $logger
+                ->expects($this->exactly(2))
+                ->method('log')
+                ->will($this->returnCallback($logArgCheck))
+            ;
+
+            $handler->setDefaultLogger($logger, E_ERROR);
+
+            try {
+                $handler->handleException($exception);
+                $this->fail('Exception expected');
+            } catch (\Exception $e) {
+                $this->assertSame($exception, $e);
+            }
+
+            $that = $this;
+            $handler->setExceptionHandler(function ($e) use ($exception, $that) {
+                $that->assertSame($exception, $e);
+            });
+
+            $handler->handleException($exception);
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    public function testErrorStacking()
+    {
+        try {
+            $handler = ErrorHandler::register();
+            $handler->screamAt(E_USER_WARNING);
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+
+            $logger
+                ->expects($this->exactly(2))
+                ->method('log')
+                ->withConsecutive(
+                    array($this->equalTo(LogLevel::WARNING), $this->equalTo('Dummy log')),
+                    array($this->equalTo(LogLevel::DEBUG), $this->equalTo('Silenced warning'))
+                )
+            ;
+
+            $handler->setDefaultLogger($logger, array(E_USER_WARNING => LogLevel::WARNING));
+
+            ErrorHandler::stackErrors();
+            @trigger_error('Silenced warning', E_USER_WARNING);
+            $logger->log(LogLevel::WARNING, 'Dummy log');
+            ErrorHandler::unstackErrors();
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    public function testBootstrappingLogger()
+    {
+        $bootLogger = new BufferingLogger();
+        $handler = new ErrorHandler($bootLogger);
+
+        $loggers = array(
+            E_DEPRECATED => array($bootLogger, LogLevel::INFO),
+            E_USER_DEPRECATED => array($bootLogger, LogLevel::INFO),
+            E_NOTICE => array($bootLogger, LogLevel::WARNING),
+            E_USER_NOTICE => array($bootLogger, LogLevel::WARNING),
+            E_STRICT => array($bootLogger, LogLevel::WARNING),
+            E_WARNING => array($bootLogger, LogLevel::WARNING),
+            E_USER_WARNING => array($bootLogger, LogLevel::WARNING),
+            E_COMPILE_WARNING => array($bootLogger, LogLevel::WARNING),
+            E_CORE_WARNING => array($bootLogger, LogLevel::WARNING),
+            E_USER_ERROR => array($bootLogger, LogLevel::CRITICAL),
+            E_RECOVERABLE_ERROR => array($bootLogger, LogLevel::CRITICAL),
+            E_COMPILE_ERROR => array($bootLogger, LogLevel::CRITICAL),
+            E_PARSE => array($bootLogger, LogLevel::CRITICAL),
+            E_ERROR => array($bootLogger, LogLevel::CRITICAL),
+            E_CORE_ERROR => array($bootLogger, LogLevel::CRITICAL),
+        );
+
+        $this->assertSame($loggers, $handler->setLoggers(array()));
+
+        $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, array());
+        $expectedLog = array(LogLevel::INFO, 'Foo message', array('type' => E_DEPRECATED, 'file' => __FILE__, 'line' => 123, 'level' => error_reporting()));
+
+        $logs = $bootLogger->cleanLogs();
+        unset($logs[0][2]['stack']);
+
+        $this->assertSame(array($expectedLog), $logs);
+
+        $bootLogger->log($expectedLog[0], $expectedLog[1], $expectedLog[2]);
+
+        $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+        $mockLogger->expects($this->once())
+            ->method('log')
+            ->with(LogLevel::WARNING, 'Foo message', $expectedLog[2]);
+
+        $handler->setLoggers(array(E_DEPRECATED => array($mockLogger, LogLevel::WARNING)));
+    }
+
+    public function testHandleFatalError()
+    {
+        try {
+            $handler = ErrorHandler::register();
+
+            $error = array(
+                'type' => E_PARSE,
+                'message' => 'foo',
+                'file' => 'bar',
+                'line' => 123,
+            );
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+
+            $that = $this;
+            $logArgCheck = function ($level, $message, $context) use ($that) {
+                $that->assertEquals('Fatal Parse Error: foo', $message);
+                $that->assertArrayHasKey('type', $context);
+                $that->assertEquals($context['type'], E_PARSE);
+            };
+
+            $logger
+                ->expects($this->once())
+                ->method('log')
+                ->will($this->returnCallback($logArgCheck))
+            ;
+
+            $handler->setDefaultLogger($logger, E_PARSE);
+
+            $handler->handleFatalError($error);
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    /**
+     * @requires PHP 7
+     */
+    public function testHandleErrorException()
+    {
+        $exception = new \Error("Class 'Foo' not found");
+
+        $handler = new ErrorHandler();
+        $handler->setExceptionHandler(function () use (&$args) {
+            $args = func_get_args();
+        });
+
+        $handler->handleException($exception);
+
+        $this->assertInstanceOf('Symfony\Component\Debug\Exception\ClassNotFoundException', $args[0]);
+        $this->assertStringStartsWith("Attempted to load class \"Foo\" from the global namespace.\nDid you forget a \"use\" statement", $args[0]->getMessage());
+    }
+
+    public function testHandleFatalErrorOnHHVM()
+    {
+        try {
+            $handler = ErrorHandler::register();
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+            $logger
+                ->expects($this->once())
+                ->method('log')
+                ->with(
+                    $this->equalTo(LogLevel::CRITICAL),
+                    $this->equalTo('Fatal Error: foo'),
+                    $this->equalTo(array(
+                        'type' => 1,
+                        'file' => 'bar',
+                        'line' => 123,
+                        'level' => -1,
+                        'stack' => array(456),
+                    ))
+                )
+            ;
+
+            $handler->setDefaultLogger($logger, E_ERROR);
+
+            $error = array(
+                'type' => E_ERROR + 0x1000000, // This error level is used by HHVM for fatal errors
+                'message' => 'foo',
+                'file' => 'bar',
+                'line' => 123,
+                'context' => array(123),
+                'backtrace' => array(456),
+            );
+
+            call_user_func_array(array($handler, 'handleError'), $error);
+            $handler->handleFatalError($error);
+
+            restore_error_handler();
+            restore_exception_handler();
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
+    /**
+     * @group legacy
+     */
+    public function testLegacyInterface()
+    {
+        try {
+            $handler = ErrorHandler::register(0);
+            $this->assertFalse($handler->handle(0, 'foo', 'foo.php', 12, array()));
+
+            restore_error_handler();
+            restore_exception_handler();
+
+            $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $that = $this;
             $logArgCheck = function ($level, $message, $context) use ($that) {
@@ -175,68 +576,17 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
             ;
 
             $handler = ErrorHandler::register(E_NOTICE);
-            $handler->setLogger($logger, 'scream');
+            @$handler->setLogger($logger, 'scream');
             unset($undefVar);
             @$undefVar++;
 
             restore_error_handler();
+            restore_exception_handler();
         } catch (\Exception $e) {
             restore_error_handler();
+            restore_exception_handler();
 
             throw $e;
         }
     }
-
-    /**
-     * @dataProvider provideFatalErrorHandlersData
-     */
-    public function testFatalErrorHandlers($error, $class, $translatedMessage)
-    {
-        $handler = new ErrorHandler();
-        $exceptionHandler = new MockExceptionHandler();
-
-        $m = new \ReflectionMethod($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());
-    }
-
-    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

@@ -131,6 +131,20 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
         $this->assertSame(array($flattened2), $flattened->getAllPrevious());
     }
 
+    /**
+     * @requires PHP 7.0
+     */
+    public function testPreviousError()
+    {
+        $exception = new \Exception('test', 123, new \ParseError('Oh noes!', 42));
+
+        $flattened = FlattenException::create($exception)->getPrevious();
+
+        $this->assertEquals($flattened->getMessage(), 'Parse error: Oh noes!', 'The message is copied from the original exception.');
+        $this->assertEquals($flattened->getCode(), 42, 'The code is copied from the original exception.');
+        $this->assertEquals($flattened->getClass(), 'Symfony\Component\Debug\Exception\FatalThrowableError', 'The class is set to the class of the original exception');
+    }
+
     /**
      * @dataProvider flattenDataProvider
      */
@@ -189,9 +203,9 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
     public function testTooBigArray()
     {
         $a = array();
-        for ($i = 0; $i < 20; $i++) {
-            for ($j = 0; $j < 50; $j++) {
-                for ($k = 0; $k < 10; $k++) {
+        for ($i = 0; $i < 20; ++$i) {
+            for ($j = 0; $j < 50; ++$j) {
+                for ($k = 0; $k < 10; ++$k) {
                     $a[$i][$j][$k] = 'value';
                 }
             }

Tests/ExceptionHandlerTest.php

@@ -12,51 +12,123 @@
 namespace Symfony\Component\Debug\Tests;
 
 use Symfony\Component\Debug\ExceptionHandler;
+use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
 
+require_once __DIR__.'/HeaderMock.php';
+
 class ExceptionHandlerTest extends \PHPUnit_Framework_TestCase
 {
+    protected function setUp()
+    {
+        testHeader();
+    }
+
+    protected function tearDown()
+    {
+        testHeader();
+    }
+
     public function testDebug()
     {
         $handler = new ExceptionHandler(false);
-        $response = $handler->createResponse(new \RuntimeException('Foo'));
 
-        $this->assertContains('<h1>Whoops, looks like something went wrong.</h1>', $response->getContent());
-        $this->assertNotContains('<div class="block_exception clear_fix">', $response->getContent());
+        ob_start();
+        $handler->sendPhpResponse(new \RuntimeException('Foo'));
+        $response = ob_get_clean();
+
+        $this->assertContains('<h1>Whoops, looks like something went wrong.</h1>', $response);
+        $this->assertNotContains('<h2 class="block_exception clear_fix">', $response);
 
         $handler = new ExceptionHandler(true);
-        $response = $handler->createResponse(new \RuntimeException('Foo'));
 
-        $this->assertContains('<h1>Whoops, looks like something went wrong.</h1>', $response->getContent());
-        $this->assertContains('<div class="block_exception clear_fix">', $response->getContent());
+        ob_start();
+        $handler->sendPhpResponse(new \RuntimeException('Foo'));
+        $response = ob_get_clean();
+
+        $this->assertContains('<h1>Whoops, looks like something went wrong.</h1>', $response);
+        $this->assertContains('<h2 class="block_exception clear_fix">', $response);
     }
 
     public function testStatusCode()
     {
-        $handler = new ExceptionHandler(false);
+        $handler = new ExceptionHandler(false, 'iso8859-1');
 
-        $response = $handler->createResponse(new \RuntimeException('Foo'));
-        $this->assertEquals('500', $response->getStatusCode());
-        $this->assertContains('Whoops, looks like something went wrong.', $response->getContent());
+        ob_start();
+        $handler->sendPhpResponse(new NotFoundHttpException('Foo'));
+        $response = ob_get_clean();
 
-        $response = $handler->createResponse(new NotFoundHttpException('Foo'));
-        $this->assertEquals('404', $response->getStatusCode());
-        $this->assertContains('Sorry, the page you are looking for could not be found.', $response->getContent());
+        $this->assertContains('Sorry, the page you are looking for could not be found.', $response);
+
+        $expectedHeaders = array(
+            array('HTTP/1.0 404', true, null),
+            array('Content-Type: text/html; charset=iso8859-1', true, null),
+        );
+
+        $this->assertSame($expectedHeaders, testHeader());
     }
 
     public function testHeaders()
     {
-        $handler = new ExceptionHandler(false);
+        $handler = new ExceptionHandler(false, 'iso8859-1');
 
-        $response = $handler->createResponse(new MethodNotAllowedHttpException(array('POST')));
-        $this->assertEquals('405', $response->getStatusCode());
-        $this->assertEquals('POST', $response->headers->get('Allow'));
+        ob_start();
+        $handler->sendPhpResponse(new MethodNotAllowedHttpException(array('POST')));
+        $response = ob_get_clean();
+
+        $expectedHeaders = array(
+            array('HTTP/1.0 405', true, null),
+            array('Allow: POST', false, null),
+            array('Content-Type: text/html; charset=iso8859-1', true, null),
+        );
+
+        $this->assertSame($expectedHeaders, testHeader());
     }
 
     public function testNestedExceptions()
     {
         $handler = new ExceptionHandler(true);
-        $response = $handler->createResponse(new \RuntimeException('Foo', 0, new \RuntimeException('Bar')));
+        ob_start();
+        $handler->sendPhpResponse(new \RuntimeException('Foo', 0, new \RuntimeException('Bar')));
+        $response = ob_get_clean();
+
+        $this->assertStringMatchesFormat('%A<span class="exception_message">Foo</span>%A<span class="exception_message">Bar</span>%A', $response);
+    }
+
+    public function testHandle()
+    {
+        $exception = new \Exception('foo');
+
+        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(array('sendPhpResponse'))->getMock();
+        $handler
+            ->expects($this->exactly(2))
+            ->method('sendPhpResponse');
+
+        $handler->handle($exception);
+
+        $that = $this;
+        $handler->setHandler(function ($e) use ($exception, $that) {
+            $that->assertSame($exception, $e);
+        });
+
+        $handler->handle($exception);
+    }
+
+    public function testHandleOutOfMemoryException()
+    {
+        $exception = new OutOfMemoryException('foo', 0, E_ERROR, __FILE__, __LINE__);
+
+        $handler = $this->getMockBuilder('Symfony\Component\Debug\ExceptionHandler')->setMethods(array('sendPhpResponse'))->getMock();
+        $handler
+            ->expects($this->once())
+            ->method('sendPhpResponse');
+
+        $that = $this;
+        $handler->setHandler(function ($e) use ($that) {
+            $that->fail('OutOfMemoryException should bypass the handler');
+        });
+
+        $handler->handle($exception);
     }
 }

Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php

@@ -15,9 +15,30 @@ use Symfony\Component\ClassLoader\ClassLoader as SymfonyClassLoader;
 use Symfony\Component\ClassLoader\UniversalClassLoader as SymfonyUniversalClassLoader;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
+use Symfony\Component\Debug\DebugClassLoader;
+use Composer\Autoload\ClassLoader as ComposerClassLoader;
 
 class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
 {
+    public static function setUpBeforeClass()
+    {
+        foreach (spl_autoload_functions() as $function) {
+            if (!is_array($function)) {
+                continue;
+            }
+
+            // get class loaders wrapped by DebugClassLoader
+            if ($function[0] instanceof DebugClassLoader) {
+                $function = $function[0]->getClassLoader();
+            }
+
+            if ($function[0] instanceof ComposerClassLoader) {
+                $function[0]->add('Symfony_Component_Debug_Tests_Fixtures', dirname(dirname(dirname(dirname(dirname(__DIR__))))));
+                break;
+            }
+        }
+    }
+
     /**
      * @dataProvider provideClassNotFoundData
      */
@@ -40,13 +61,34 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
             array_map('spl_autoload_register', $autoloaders);
         }
 
-        $this->assertInstanceof('Symfony\Component\Debug\Exception\ClassNotFoundException', $exception);
+        $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());
     }
 
+    /**
+     * @group legacy
+     */
+    public function testLegacyHandleClassNotFound()
+    {
+        $prefixes = array('Symfony\Component\Debug\Exception\\' => realpath(__DIR__.'/../../Exception'));
+        $symfonyUniversalClassLoader = new SymfonyUniversalClassLoader();
+        $symfonyUniversalClassLoader->registerPrefixes($prefixes);
+
+        $this->testHandleClassNotFound(
+            array(
+                'type' => 1,
+                'line' => 12,
+                'file' => 'foo.php',
+                'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
+            ),
+            "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
+            array($symfonyUniversalClassLoader, 'loadClass')
+        );
+    }
+
     public function provideClassNotFoundData()
     {
         $prefixes = array('Symfony\Component\Debug\Exception\\' => realpath(__DIR__.'/../../Exception'));
@@ -54,8 +96,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
         $symfonyAutoloader = new SymfonyClassLoader();
         $symfonyAutoloader->addPrefixes($prefixes);
 
-        $symfonyUniversalClassLoader = new SymfonyUniversalClassLoader();
-        $symfonyUniversalClassLoader->registerPrefixes($prefixes);
+        $debugClassLoader = new DebugClassLoader(array($symfonyAutoloader, 'loadClass'));
 
         return array(
             array(
@@ -65,7 +106,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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?',
+                "Attempted to load class \"WhizBangFactory\" from the global namespace.\nDid you forget a \"use\" statement?",
             ),
             array(
                 array(
@@ -74,7 +115,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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?',
+                "Attempted to load class \"WhizBangFactory\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
             ),
             array(
                 array(
@@ -83,7 +124,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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.',
+                "Attempted to load class \"UndefinedFunctionException\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
             ),
             array(
                 array(
@@ -92,7 +133,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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.',
+                "Attempted to load class \"PEARClass\" from the global namespace.\nDid you forget a \"use\" statement for \"Symfony_Component_Debug_Tests_Fixtures_PEARClass\"?",
             ),
             array(
                 array(
@@ -101,7 +142,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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.',
+                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
             ),
             array(
                 array(
@@ -110,7 +151,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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.',
+                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
                 array($symfonyAutoloader, 'loadClass'),
             ),
             array(
@@ -120,8 +161,8 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
                 ),
-                'Attempted to load class "UndefinedFunctionException" from namespace "Foo\Bar" in foo.php line 12. Do you need to "use" it from another namespace? Perhaps you need to add a use statement for one of the following: Symfony\Component\Debug\Exception\UndefinedFunctionException.',
-                array($symfonyUniversalClassLoader, 'loadClass'),
+                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\Bar\".\nDid you forget a \"use\" statement for \"Symfony\Component\Debug\Exception\UndefinedFunctionException\"?",
+                array($debugClassLoader, 'loadClass'),
             ),
             array(
                 array(
@@ -130,7 +171,7 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     'file' => 'foo.php',
                     'message' => 'Class \'Foo\\Bar\\UndefinedFunctionException\' not found',
                 ),
-                'Attempted to load class "UndefinedFunctionException" from namespace "Foo\Bar" in foo.php line 12. Do you need to "use" it from another namespace?',
+                "Attempted to load class \"UndefinedFunctionException\" from namespace \"Foo\\Bar\".\nDid you forget a \"use\" statement for another namespace?",
                 function ($className) { /* do nothing here */ },
             ),
         );
@@ -138,11 +179,11 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
 
     public function testCannotRedeclareClass()
     {
-        if (!file_exists(__DIR__.'/../FIXTURES/REQUIREDTWICE.PHP')) {
+        if (!file_exists(__DIR__.'/../FIXTURES2/REQUIREDTWICE.PHP')) {
             $this->markTestSkipped('Can only be run on case insensitive filesystems');
         }
 
-        require_once __DIR__.'/../FIXTURES/REQUIREDTWICE.PHP';
+        require_once __DIR__.'/../FIXTURES2/REQUIREDTWICE.PHP';
 
         $error = array(
             'type' => 1,
@@ -154,6 +195,6 @@ class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
         $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->assertInstanceOf('Symfony\Component\Debug\Exception\ClassNotFoundException', $exception);
     }
 }

Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php

@@ -24,7 +24,7 @@ class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
         $handler = new UndefinedFunctionFatalErrorHandler();
         $exception = $handler->handleError($error, new FatalErrorException('', 0, $error['type'], $error['file'], $error['line']));
 
-        $this->assertInstanceof('Symfony\Component\Debug\Exception\UndefinedFunctionException', $exception);
+        $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());
@@ -42,7 +42,7 @@ class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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"?',
+                "Attempted to call function \"test_namespaced_function\" from the global namespace.\nDid you mean to call \"\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function\"?",
             ),
             array(
                 array(
@@ -51,7 +51,7 @@ class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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"?',
+                "Attempted to call function \"test_namespaced_function\" from namespace \"Foo\\Bar\\Baz\".\nDid you mean to call \"\\symfony\\component\\debug\\tests\\fatalerrorhandler\\test_namespaced_function\"?",
             ),
             array(
                 array(
@@ -60,7 +60,7 @@ class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     'file' => 'foo.php',
                     'message' => 'Call to undefined function foo()',
                 ),
-                'Attempted to call function "foo" from the global namespace in foo.php line 12.',
+                'Attempted to call function "foo" from the global namespace.',
             ),
             array(
                 array(
@@ -69,7 +69,7 @@ class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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.',
+                'Attempted to call function "foo" from namespace "Foo\Bar\Baz".',
             ),
         );
     }

Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php

@@ -24,7 +24,7 @@ class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
         $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->assertInstanceOf('Symfony\Component\Debug\Exception\UndefinedMethodException', $exception);
         $this->assertSame($translatedMessage, $exception->getMessage());
         $this->assertSame($error['type'], $exception->getSeverity());
         $this->assertSame($error['file'], $exception->getFile());
@@ -41,7 +41,7 @@ class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     'file' => 'foo.php',
                     'message' => 'Call to undefined method SplObjectStorage::what()',
                 ),
-                'Attempted to call method "what" on class "SplObjectStorage" in foo.php line 12.',
+                'Attempted to call an undefined method named "what" of class "SplObjectStorage".',
             ),
             array(
                 array(
@@ -50,7 +50,7 @@ class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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"?',
+                "Attempted to call an undefined method named \"walid\" of class \"SplObjectStorage\".\nDid you mean to call \"valid\"?",
             ),
             array(
                 array(
@@ -59,7 +59,16 @@ class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
                     '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"?',
+                "Attempted to call an undefined method named \"offsetFet\" of class \"SplObjectStorage\".\nDid you mean to call e.g. \"offsetGet\", \"offsetSet\" or \"offsetUnset\"?",
+            ),
+            array(
+                array(
+                  'type' => 1,
+                  'message' => 'Call to undefined method class@anonymous::test()',
+                  'file' => '/home/possum/work/symfony/test.php',
+                  'line' => 11,
+                ),
+                'Attempted to call an undefined method named "test" of class "class@anonymous".',
             ),
         );
     }

Tests/Fixtures/DeprecatedClass.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+/**
+ * @deprecated but this is a test
+ *             deprecation notice.
+ * @foobar
+ */
+class DeprecatedClass
+{
+}

Tests/Fixtures/DeprecatedInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+/**
+ * @deprecated but this is a test
+ *             deprecation notice.
+ * @foobar
+ */
+interface DeprecatedInterface
+{
+}

Tests/Fixtures/NonDeprecatedInterface.php

@@ -2,6 +2,6 @@
 
 namespace Symfony\Component\Debug\Tests\Fixtures;
 
-class RequiredTwice
+interface NonDeprecatedInterface extends DeprecatedInterface
 {
 }

Tests/Fixtures/ToStringThrower.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class ToStringThrower
+{
+    private $exception;
+
+    public function __construct(\Exception $e)
+    {
+        $this->exception = $e;
+    }
+
+    public function __toString()
+    {
+        try {
+            throw $this->exception;
+        } catch (\Exception $e) {
+            // Using user_error() here is on purpose so we do not forget
+            // that this alias also should work alongside with trigger_error().
+            return user_error($e, E_USER_ERROR);
+        }
+    }
+}

Tests/Fixtures2/RequiredTwice.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures2;
+
+class RequiredTwice
+{
+}

Tests/HeaderMock.php

@@ -0,0 +1,38 @@
+<?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;
+
+function headers_sent()
+{
+    return false;
+}
+
+function header($str, $replace = true, $status = null)
+{
+    Tests\testHeader($str, $replace, $status);
+}
+
+namespace Symfony\Component\Debug\Tests;
+
+function testHeader()
+{
+    static $headers = array();
+
+    if (!$h = func_get_args()) {
+        $h = $headers;
+        $headers = array();
+
+        return $h;
+    }
+
+    $headers[] = func_get_args();
+}

Tests/MockExceptionHandler.php

@@ -13,7 +13,7 @@ namespace Symfony\Component\Debug\Tests;
 
 use Symfony\Component\Debug\ExceptionHandler;
 
-class MockExceptionHandler extends Exceptionhandler
+class MockExceptionHandler extends ExceptionHandler
 {
     public $e;
 

composer.json

@@ -3,7 +3,7 @@
     "type": "library",
     "description": "Symfony Debug Component",
     "keywords": [],
-    "homepage": "http://symfony.com",
+    "homepage": "https://symfony.com",
     "license": "MIT",
     "authors": [
         {
@@ -12,32 +12,30 @@
         },
         {
             "name": "Symfony Community",
-            "homepage": "http://symfony.com/contributors"
+            "homepage": "https://symfony.com/contributors"
         }
     ],
     "require": {
-        "php": ">=5.3.3"
+        "php": ">=5.3.9",
+        "psr/log": "~1.0"
     },
     "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/class-loader": "~2.2",
-        "symfony/http-kernel": "~2.3.24|~2.5.9|~2.6,>=2.6.2",
-        "symfony/http-foundation": "~2.1"
-    },
-    "suggest": {
-        "symfony/http-foundation": "",
-        "symfony/http-kernel": ""
+        "symfony/class-loader": "~2.2|~3.0.0",
+        "symfony/http-kernel": "~2.3.24|~2.5.9|~2.6,>=2.6.2|~3.0.0"
     },
     "autoload": {
-        "psr-0": { "Symfony\\Component\\Debug\\": "" }
+        "psr-4": { "Symfony\\Component\\Debug\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
     },
-    "target-dir": "Symfony/Component/Debug",
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.5-dev"
+            "dev-master": "2.8-dev"
         }
     }
 }

phpunit.xml.dist

@@ -7,13 +7,16 @@
          bootstrap="vendor/autoload.php"
 >
     <php>
-        <!-- Silence E_USER_DEPRECATED (-16385 == -1 & ~E_USER_DEPRECATED) -->
-        <ini name="error_reporting" value="-16385"/>
+        <ini name="error_reporting" value="-1" />
     </php>
+
     <testsuites>
         <testsuite name="Symfony Debug Component Test Suite">
             <directory>./Tests/</directory>
         </testsuite>
+        <testsuite name="Symfony Debug Extension Test Suite">
+            <directory suffix=".phpt">./Resources/ext/tests/</directory>
+        </testsuite>
     </testsuites>
 
     <filter>