[Debug] Fix populating error_get_last() for handled silent errors

This PR was squashed before being merged into the 2.7 branch (closes #25653).

Discussion
----------

PHP CS Fixer: clean up repo and adjust config

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | n/a
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Reason for this PR is that one want to have `php-cs-fixer fix -v` command executed without changes that shall not be applied for this repo. To achieve that, we need to groom config to exclude files that violate CS willingly, fix files that are violating CS unwillingly, and deliver missing case handling at PHP CS Fixer itself (https://github.com/FriendsOfPHP/PHP-CS-Fixer/pull/3359) (already merged!).

Commits
-------

b14cbc1 PHP CS Fixer: clean up repo and adjust config

Debug.php

@@ -45,7 +45,7 @@ class Debug
             error_reporting(-1);
         }
 
-        if ('cli' !== PHP_SAPI) {
+        if (!\in_array(PHP_SAPI, array('cli', 'phpdbg'), true)) {
             ini_set('display_errors', 0);
             ExceptionHandler::register();
         } elseif ($displayErrors && (!ini_get('log_errors') || ini_get('error_log'))) {

DebugClassLoader.php

@@ -26,6 +26,7 @@ class DebugClassLoader
 {
     private $classLoader;
     private $isFinder;
+    private $loaded = array();
     private $wasFinder;
     private static $caseCheck;
     private static $deprecated = array();
@@ -33,8 +34,6 @@ class DebugClassLoader
     private static $darwinCache = array('/' => array('/', array()));
 
     /**
-     * Constructor.
-     *
      * @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)
@@ -143,7 +142,7 @@ class DebugClassLoader
      */
     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);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.5 and will be removed in 3.0.', E_USER_DEPRECATED);
 
         if ($this->wasFinder) {
             return $this->classLoader[0]->findFile($class);
@@ -164,9 +163,10 @@ class DebugClassLoader
         ErrorHandler::stackErrors();
 
         try {
-            if ($this->isFinder) {
+            if ($this->isFinder && !isset($this->loaded[$class])) {
+                $this->loaded[$class] = true;
                 if ($file = $this->classLoader[0]->findFile($class)) {
-                    require_once $file;
+                    require $file;
                 }
             } else {
                 call_user_func($this->classLoader, $class);
@@ -186,7 +186,7 @@ class DebugClassLoader
 
         $exists = class_exists($class, false) || interface_exists($class, false) || (function_exists('trait_exists') && trait_exists($class, false));
 
-        if ('\\' === $class[0]) {
+        if ($class && '\\' === $class[0]) {
             $class = substr($class, 1);
         }
 
@@ -203,18 +203,11 @@ class DebugClassLoader
             } 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, '_'))) {
+                if (2 > $len = 1 + (strpos($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;
-                    }
+                    $ns = substr($name, 0, $len);
                 }
                 $parent = get_parent_class($class);
 

ErrorHandler.php

@@ -101,6 +101,7 @@ class ErrorHandler
     private static $reservedMemory;
     private static $stackedErrors = array();
     private static $stackedErrorLevels = array();
+    private static $exitCode = 0;
 
     /**
      * Same init value as thrownErrors.
@@ -146,10 +147,24 @@ class ErrorHandler
             $handler = $prev[0];
             $replace = false;
         }
-        if ($replace || !$prev) {
-            $handler->setExceptionHandler(set_exception_handler(array($handler, 'handleException')));
-        } else {
+        if (!$replace && $prev) {
             restore_error_handler();
+            $handlerIsRegistered = is_array($prev) && $handler === $prev[0];
+        } else {
+            $handlerIsRegistered = true;
+        }
+        if (is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
+            restore_exception_handler();
+            if (!$handlerIsRegistered) {
+                $handler = $prev[0];
+            } elseif ($handler !== $prev[0] && $replace) {
+                set_exception_handler(array($handler, 'handleException'));
+                $p = $prev[0]->setExceptionHandler(null);
+                $handler->setExceptionHandler($p);
+                $prev[0]->setExceptionHandler($p);
+            }
+        } else {
+            $handler->setExceptionHandler($prev);
         }
 
         $handler->throwAt($levels & $handler->thrownErrors, true);
@@ -349,12 +364,10 @@ class ErrorHandler
     /**
      * Handles errors by filtering then logging them according to the configured bit fields.
      *
-     * @param int    $type      One of the E_* constants
+     * @param int    $type    One of the E_* constants
      * @param string $message
      * @param string $file
      * @param int    $line
-     * @param array  $context
-     * @param array  $backtrace
      *
      * @return bool Returns false when no handling happens so that the PHP engine can handle the error itself
      *
@@ -362,18 +375,29 @@ class ErrorHandler
      *
      * @internal
      */
-    public function handleError($type, $message, $file, $line, array $context, array $backtrace = null)
+    public function handleError($type, $message, $file, $line)
     {
-        $level = error_reporting() | E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
+        $level = error_reporting();
+        $silenced = 0 === ($level & $type);
+        $level |= 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 && $log;
+            return !$silenced && $type && $log;
+        }
+        $scope = $this->scopedErrors & $type;
+
+        if (4 < $numArgs = func_num_args()) {
+            $context = $scope ? (func_get_arg(4) ?: array()) : array();
+            $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
+        } else {
+            $context = array();
+            $backtrace = null;
         }
 
-        if (isset($context['GLOBALS']) && ($this->scopedErrors & $type)) {
+        if (isset($context['GLOBALS']) && $scope) {
             $e = $context;                  // Whatever the signature of the method,
             unset($e['GLOBALS'], $context); // $context is always a reference in 5.3
             $context = $e;
@@ -389,14 +413,14 @@ class ErrorHandler
         }
 
         if ($throw) {
-            if (($this->scopedErrors & $type) && class_exists('Symfony\Component\Debug\Exception\ContextErrorException')) {
+            if ($scope && 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)) {
+            if (\PHP_VERSION_ID <= 50407 && (\PHP_VERSION_ID >= 50400 || \PHP_VERSION_ID <= 50317)) {
                 // Exceptions thrown from error handlers are sometimes not caught by the exception
                 // handler and shutdown handlers are bypassed before 5.4.8/5.3.18.
                 // We temporarily re-enable display_errors to prevent any blank page related to this bug.
@@ -420,7 +444,7 @@ class ErrorHandler
         $e = compact('type', 'file', 'line', 'level');
 
         if ($type & $level) {
-            if ($this->scopedErrors & $type) {
+            if ($scope) {
                 $e['scope_vars'] = $context;
                 if ($trace) {
                     $e['stack'] = $backtrace ?: debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);
@@ -457,7 +481,7 @@ class ErrorHandler
             }
         }
 
-        return $type && $log;
+        return !$silenced && $type && $log;
     }
 
     /**
@@ -470,10 +494,14 @@ class ErrorHandler
      */
     public function handleException($exception, array $error = null)
     {
+        if (null === $error) {
+            self::$exitCode = 255;
+        }
         if (!$exception instanceof \Exception) {
             $exception = new FatalThrowableError($exception);
         }
         $type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
+        $handlerException = null;
 
         if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
             $e = array(
@@ -518,18 +546,21 @@ class ErrorHandler
                 }
             }
         }
-        if (empty($this->exceptionHandler)) {
-            throw $exception; // Give back $exception to the native handler
-        }
+        $exceptionHandler = $this->exceptionHandler;
+        $this->exceptionHandler = null;
         try {
-            call_user_func($this->exceptionHandler, $exception);
+            if (null !== $exceptionHandler) {
+                return \call_user_func($exceptionHandler, $exception);
+            }
+            $handlerException = $handlerException ?: $exception;
         } catch (\Exception $handlerException) {
         } catch (\Throwable $handlerException) {
         }
-        if (isset($handlerException)) {
-            $this->exceptionHandler = null;
-            $this->handleException($handlerException);
+        if ($exception === $handlerException) {
+            self::$reservedMemory = null; // Disable the fatal error handler
+            throw $exception; // Give back $exception to the native handler
         }
+        $this->handleException($handlerException);
     }
 
     /**
@@ -545,17 +576,41 @@ class ErrorHandler
             return;
         }
 
-        self::$reservedMemory = null;
+        $handler = self::$reservedMemory = null;
+        $handlers = array();
+        $previousHandler = null;
+        $sameHandlerLimit = 10;
 
-        $handler = set_error_handler('var_dump');
-        $handler = is_array($handler) ? $handler[0] : null;
-        restore_error_handler();
+        while (!is_array($handler) || !$handler[0] instanceof self) {
+            $handler = set_exception_handler('var_dump');
+            restore_exception_handler();
 
-        if (!$handler instanceof self) {
+            if (!$handler) {
+                break;
+            }
+            restore_exception_handler();
+
+            if ($handler !== $previousHandler) {
+                array_unshift($handlers, $handler);
+                $previousHandler = $handler;
+            } elseif (0 === --$sameHandlerLimit) {
+                $handler = null;
+                break;
+            }
+        }
+        foreach ($handlers as $h) {
+            set_exception_handler($h);
+        }
+        if (!$handler) {
             return;
         }
+        if ($handler !== $h) {
+            $handler[0]->setExceptionHandler($h);
+        }
+        $handler = $handler[0];
+        $handlers = array();
 
-        if (null === $error) {
+        if ($exit = null === $error) {
             $error = error_get_last();
         }
 
@@ -579,15 +634,21 @@ class ErrorHandler
             } 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, $error);
+            if (isset($exception)) {
+                self::$exitCode = 255;
+                $handler->handleException($exception, $error);
+            }
         } catch (FatalErrorException $e) {
             // Ignore this re-throw
         }
+
+        if ($exit && self::$exitCode) {
+            $exitCode = self::$exitCode;
+            register_shutdown_function('register_shutdown_function', function () use ($exitCode) { exit($exitCode); });
+        }
     }
 
     /**
@@ -656,7 +717,7 @@ class ErrorHandler
      */
     public function setLevel($level)
     {
-        @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);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.6 and will be removed in 3.0. Use the throwAt() method instead.', E_USER_DEPRECATED);
 
         $level = null === $level ? error_reporting() : $level;
         $this->throwAt($level, true);
@@ -671,7 +732,7 @@ class ErrorHandler
      */
     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);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.6 and will be removed in 3.0. Use the throwAt() method instead.', E_USER_DEPRECATED);
 
         if ($displayErrors) {
             $this->throwAt($this->displayErrors, true);
@@ -692,7 +753,7 @@ class ErrorHandler
      */
     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);
+        @trigger_error('The '.__METHOD__.' static method is deprecated since Symfony 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) ? $handler[0] : null;
@@ -717,7 +778,7 @@ class ErrorHandler
      */
     public function handle($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());
+        $this->handleError(E_USER_DEPRECATED, 'The '.__METHOD__.' method is deprecated since Symfony 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);
     }
@@ -729,7 +790,7 @@ class ErrorHandler
      */
     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);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.6 and will be removed in 3.0. Use the handleFatalError() method instead.', E_USER_DEPRECATED);
 
         static::handleFatalError();
     }

Exception/DummyException.php

@@ -11,7 +11,7 @@
 
 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);
+@trigger_error('The '.__NAMESPACE__.'\DummyException class is deprecated since Symfony 2.5 and will be removed in 3.0.', E_USER_DEPRECATED);
 
 /**
  * @author Fabien Potencier <fabien@symfony.com>

Exception/FatalThrowableError.php

@@ -36,7 +36,8 @@ class FatalThrowableError extends FatalErrorException
             $e->getCode(),
             $severity,
             $e->getFile(),
-            $e->getLine()
+            $e->getLine(),
+            $e->getPrevious()
         );
 
         $this->setTrace($e->getTrace());

ExceptionHandler.php

@@ -151,8 +151,6 @@ class ExceptionHandler
      * If you have the Symfony HttpFoundation component installed,
      * this method will use it to create and send the response. If not,
      * it will fallback to plain PHP functions.
-     *
-     * @param \Exception $exception An \Exception instance
      */
     private function failSafeHandle(\Exception $exception)
     {
@@ -215,8 +213,6 @@ class ExceptionHandler
     /**
      * Gets the HTML content associated with the given exception.
      *
-     * @param FlattenException $exception A FlattenException instance
-     *
      * @return string The content as a string
      */
     public function getContent(FlattenException $exception)
@@ -283,8 +279,6 @@ EOF;
     /**
      * Gets the stylesheet associated with the given exception.
      *
-     * @param FlattenException $exception A FlattenException instance
-     *
      * @return string The stylesheet as a string
      */
     public function getStylesheet(FlattenException $exception)
@@ -419,7 +413,7 @@ EOF;
                 $formattedValue = str_replace("\n", '', var_export($this->escapeHtml((string) $item[1]), true));
             }
 
-            $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
+            $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $this->escapeHtml($key), $formattedValue);
         }
 
         return implode(', ', $result);
@@ -432,9 +426,9 @@ EOF;
      */
     protected static function utf8Htmlize($str)
     {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.7 and will be removed in 3.0.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 2.7 and will be removed in 3.0.', E_USER_DEPRECATED);
 
-        return htmlspecialchars($str, ENT_QUOTES | (PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), 'UTF-8');
+        return htmlspecialchars($str, ENT_QUOTES | (\PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), 'UTF-8');
     }
 
     /**
@@ -442,7 +436,7 @@ EOF;
      */
     private function escapeHtml($str)
     {
-        return htmlspecialchars($str, ENT_QUOTES | (PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), $this->charset);
+        return htmlspecialchars($str, ENT_QUOTES | (\PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), $this->charset);
     }
 
     /**

FatalErrorHandler/ClassNotFoundFatalErrorHandler.php

@@ -179,7 +179,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
         );
 
         if ($prefix) {
-            $candidates = array_filter($candidates, function ($candidate) use ($prefix) {return 0 === strpos($candidate, $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

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 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

Resources/ext/tests/001.phpt

@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_zval_info API
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 

Resources/ext/tests/002.phpt

@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_debug_backtrace in case of fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 

Resources/ext/tests/002_1.phpt

@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_debug_backtrace in case of non fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 

Resources/ext/tests/003.phpt

@@ -1,7 +1,9 @@
 --TEST--
 Test ErrorHandler in case of fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 

Tests/DebugClassLoaderTest.php

@@ -11,10 +11,11 @@
 
 namespace Symfony\Component\Debug\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\DebugClassLoader;
 use Symfony\Component\Debug\ErrorHandler;
 
-class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
+class DebugClassLoaderTest extends TestCase
 {
     /**
      * @var int Error reporting level before running tests
@@ -58,9 +59,26 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
         $this->fail('DebugClassLoader did not register');
     }
 
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage boo
+     */
+    public function testThrowingClass()
+    {
+        try {
+            class_exists(__NAMESPACE__.'\Fixtures\Throwing');
+            $this->fail('Exception expected');
+        } catch (\Exception $e) {
+            $this->assertSame('boo', $e->getMessage());
+        }
+
+        // the second call also should throw
+        class_exists(__NAMESPACE__.'\Fixtures\Throwing');
+    }
+
     public function testUnsilencing()
     {
-        if (PHP_VERSION_ID >= 70000) {
+        if (\PHP_VERSION_ID >= 70000) {
             $this->markTestSkipped('PHP7 throws exceptions, unsilencing is not required anymore.');
         }
         if (defined('HHVM_VERSION')) {
@@ -110,7 +128,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
             restore_error_handler();
             restore_exception_handler();
             $this->assertStringStartsWith(__FILE__, $exception->getFile());
-            if (PHP_VERSION_ID < 70000) {
+            if (\PHP_VERSION_ID < 70000) {
                 $this->assertRegExp('/^Runtime Notice: Declaration/', $exception->getMessage());
                 $this->assertEquals(E_STRICT, $exception->getSeverity());
             } else {
@@ -127,6 +145,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \RuntimeException
+     * @expectedExceptionMessage Case mismatch between loaded and declared class names
      */
     public function testNameCaseMismatch()
     {
@@ -148,6 +167,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \RuntimeException
+     * @expectedExceptionMessage Case mismatch between loaded and declared class names
      */
     public function testPsr4CaseMismatch()
     {
@@ -188,7 +208,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
         $xError = array(
             'type' => E_USER_DEPRECATED,
-            'message' => 'The Test\Symfony\Component\Debug\Tests\\'.$class.' class '.$type.' Symfony\Component\Debug\Tests\Fixtures\\'.$super.' that is deprecated but this is a test deprecation notice.',
+            '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);
@@ -226,7 +246,7 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
 
     public function testReservedForPhp7()
     {
-        if (PHP_VERSION_ID >= 70000) {
+        if (\PHP_VERSION_ID >= 70000) {
             $this->markTestSkipped('PHP7 already prevents using reserved names.');
         }
 

Tests/ErrorHandlerTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Debug\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Psr\Log\LogLevel;
 use Symfony\Component\Debug\ErrorHandler;
 use Symfony\Component\Debug\Exception\ContextErrorException;
@@ -21,7 +22,7 @@ use Symfony\Component\Debug\Exception\ContextErrorException;
  * @author Robert Schönthal <seroscho@googlemail.com>
  * @author Nicolas Grekas <p@tchwork.com>
  */
-class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
+class ErrorHandlerTest extends TestCase
 {
     public function testRegister()
     {
@@ -33,7 +34,7 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
 
             $newHandler = new ErrorHandler();
 
-            $this->assertSame($newHandler, ErrorHandler::register($newHandler, false));
+            $this->assertSame($handler, ErrorHandler::register($newHandler, false));
             $h = set_error_handler('var_dump');
             restore_error_handler();
             $this->assertSame(array($handler, 'handleError'), $h);
@@ -63,6 +64,30 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    public function testErrorGetLast()
+    {
+        $handler = ErrorHandler::register();
+        $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
+        $handler->setDefaultLogger($logger);
+        $handler->screamAt(E_ALL);
+
+        try {
+            @trigger_error('Hello', E_USER_WARNING);
+            $expected = array(
+                'type' => E_USER_WARNING,
+                'message' => 'Hello',
+                'file' => __FILE__,
+                'line' => __LINE__ - 5,
+            );
+            $this->assertSame($expected, error_get_last());
+        } catch (\Exception $e) {
+            restore_error_handler();
+            restore_exception_handler();
+
+            throw $e;
+        }
+    }
+
     public function testNotice()
     {
         ErrorHandler::register();
@@ -78,7 +103,9 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
             $this->assertEquals(E_NOTICE, $exception->getSeverity());
             $this->assertEquals(__FILE__, $exception->getFile());
             $this->assertRegExp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
-            $this->assertArrayHasKey('foobar', $exception->getContext());
+            if (\PHP_VERSION_ID < 70200) {
+                $this->assertArrayHasKey('foobar', $exception->getContext());
+            }
 
             $trace = $exception->getTrace();
             $this->assertEquals(__FILE__, $trace[0]['file']);
@@ -290,6 +317,9 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
         @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, array());
     }
 
+    /**
+     * @group no-hhvm
+     */
     public function testHandleException()
     {
         try {
@@ -372,6 +402,9 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    /**
+     * @group no-hhvm
+     */
     public function testHandleFatalError()
     {
         try {
@@ -431,6 +464,9 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
         $this->assertStringStartsWith("Attempted to load class \"Foo\" from the global namespace.\nDid you forget a \"use\" statement", $args[0]->getMessage());
     }
 
+    /**
+     * @group no-hhvm
+     */
     public function testHandleFatalErrorOnHHVM()
     {
         try {
@@ -518,4 +554,18 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
             throw $e;
         }
     }
+
+    /**
+     * @expectedException \Exception
+     * @group no-hhvm
+     */
+    public function testCustomExceptionHandler()
+    {
+        $handler = new ErrorHandler();
+        $handler->setExceptionHandler(function ($e) use ($handler) {
+            $handler->handleException($e);
+        });
+
+        $handler->handleException(new \Exception());
+    }
 }

Tests/Exception/FlattenExceptionTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Debug\Tests\Exception;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\Exception\FlattenException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
@@ -27,7 +28,7 @@ use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
 use Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException;
 use Symfony\Component\HttpKernel\Exception\UnsupportedMediaTypeHttpException;
 
-class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
+class FlattenExceptionTest extends TestCase
 {
     public function testStatusCode()
     {
@@ -104,7 +105,7 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
     /**
      * @dataProvider flattenDataProvider
      */
-    public function testFlattenHttpException(\Exception $exception, $statusCode)
+    public function testFlattenHttpException(\Exception $exception)
     {
         $flattened = FlattenException::create($exception);
         $flattened2 = FlattenException::create($exception);
@@ -119,7 +120,7 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
     /**
      * @dataProvider flattenDataProvider
      */
-    public function testPrevious(\Exception $exception, $statusCode)
+    public function testPrevious(\Exception $exception)
     {
         $flattened = FlattenException::create($exception);
         $flattened2 = FlattenException::create($exception);
@@ -166,7 +167,7 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
     /**
      * @dataProvider flattenDataProvider
      */
-    public function testToArray(\Exception $exception, $statusCode)
+    public function testToArray(\Exception $exception)
     {
         $flattened = FlattenException::create($exception);
         $flattened->setTrace(array(), 'foo.php', 123);
@@ -186,12 +187,13 @@ class FlattenExceptionTest extends \PHPUnit_Framework_TestCase
     public function flattenDataProvider()
     {
         return array(
-            array(new \Exception('test', 123), 500),
+            array(new \Exception('test', 123)),
         );
     }
 
     public function testRecursionInArguments()
     {
+        $a = null;
         $a = array('foo', array(2, &$a));
         $exception = $this->createException($a);
 

Tests/ExceptionHandlerTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Debug\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\ExceptionHandler;
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
@@ -18,7 +19,7 @@ use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
 
 require_once __DIR__.'/HeaderMock.php';
 
-class ExceptionHandlerTest extends \PHPUnit_Framework_TestCase
+class ExceptionHandlerTest extends TestCase
 {
     protected function setUp()
     {

Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Debug\Tests\FatalErrorHandler;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\ClassLoader as SymfonyClassLoader;
 use Symfony\Component\ClassLoader\UniversalClassLoader as SymfonyUniversalClassLoader;
 use Symfony\Component\Debug\Exception\FatalErrorException;
@@ -18,7 +19,7 @@ use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
 use Symfony\Component\Debug\DebugClassLoader;
 use Composer\Autoload\ClassLoader as ComposerClassLoader;
 
-class ClassNotFoundFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+class ClassNotFoundFatalErrorHandlerTest extends TestCase
 {
     public static function setUpBeforeClass()
     {

Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php

@@ -11,10 +11,11 @@
 
 namespace Symfony\Component\Debug\Tests\FatalErrorHandler;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
 
-class UndefinedFunctionFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+class UndefinedFunctionFatalErrorHandlerTest extends TestCase
 {
     /**
      * @dataProvider provideUndefinedFunctionData

Tests/FatalErrorHandler/UndefinedMethodFatalErrorHandlerTest.php

@@ -11,10 +11,11 @@
 
 namespace Symfony\Component\Debug\Tests\FatalErrorHandler;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
 
-class UndefinedMethodFatalErrorHandlerTest extends \PHPUnit_Framework_TestCase
+class UndefinedMethodFatalErrorHandlerTest extends TestCase
 {
     /**
      * @dataProvider provideUndefinedMethodData

Tests/Fixtures/DeprecatedClass.php

@@ -4,7 +4,7 @@ namespace Symfony\Component\Debug\Tests\Fixtures;
 
 /**
  * @deprecated but this is a test
- *             deprecation notice.
+ *             deprecation notice
  * @foobar
  */
 class DeprecatedClass

Tests/Fixtures/DeprecatedInterface.php

@@ -4,7 +4,7 @@ namespace Symfony\Component\Debug\Tests\Fixtures;
 
 /**
  * @deprecated but this is a test
- *             deprecation notice.
+ *             deprecation notice
  * @foobar
  */
 interface DeprecatedInterface

Tests/Fixtures/Throwing.php

@@ -0,0 +1,3 @@
+<?php
+
+throw new \Exception('boo');

Tests/phpt/decorate_exception_hander.phpt

@@ -0,0 +1,47 @@
+--TEST--
+Test catching fatal errors when handlers are nested
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+set_error_handler('var_dump');
+set_exception_handler('var_dump');
+
+ErrorHandler::register(null, false);
+
+if (true) {
+    class foo extends missing
+    {
+    }
+}
+
+?>
+--EXPECTF--
+Fatal error: Class 'Symfony\Component\Debug\missing' not found in %s on line %d
+object(Symfony\Component\Debug\Exception\ClassNotFoundException)#%d (8) {
+  ["message":protected]=>
+  string(131) "Attempted to load class "missing" from namespace "Symfony\Component\Debug".
+Did you forget a "use" statement for another namespace?"
+  ["string":"Exception":private]=>
+  string(0) ""
+  ["code":protected]=>
+  int(0)
+  ["file":protected]=>
+  string(%d) "%s"
+  ["line":protected]=>
+  int(%d)
+  ["trace":"Exception":private]=>
+  array(0) {
+  }
+  ["previous":"Exception":private]=>
+  NULL
+  ["severity":protected]=>
+  int(1)
+}

Tests/phpt/exception_rethrown.phpt

@@ -0,0 +1,35 @@
+--TEST--
+Test rethrowing in custom exception handler
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+if (true) {
+    class TestLogger extends \Psr\Log\AbstractLogger
+    {
+        public function log($level, $message, array $context = array())
+        {
+            echo $message, "\n";
+        }
+    }
+}
+
+set_exception_handler(function ($e) { echo 123; throw $e; });
+ErrorHandler::register()->setDefaultLogger(new TestLogger());
+ini_set('display_errors', 1);
+
+throw new \Exception('foo');
+?>
+--EXPECTF--
+Uncaught Exception: foo
+123
+Fatal error: Uncaught %s:25
+Stack trace:
+%a

Tests/phpt/fatal_with_nested_handlers.phpt

@@ -0,0 +1,42 @@
+--TEST--
+Test catching fatal errors when handlers are nested
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+Debug::enable();
+ini_set('display_errors', 0);
+
+$eHandler = set_error_handler('var_dump');
+$xHandler = set_exception_handler('var_dump');
+
+var_dump(array(
+    $eHandler[0] === $xHandler[0] ? 'Error and exception handlers do match' : 'Error and exception handlers are different',
+));
+
+$eHandler[0]->setExceptionHandler('print_r');
+
+if (true) {
+    class Broken implements \Serializable
+    {
+    }
+}
+
+?>
+--EXPECTF--
+array(1) {
+  [0]=>
+  string(37) "Error and exception handlers do match"
+}
+object(Symfony\Component\Debug\Exception\FatalErrorException)#%d (8) {
+  ["message":protected]=>
+  string(199) "Error: Class Symfony\Component\Debug\Broken contains 2 abstract methods and must therefore be declared abstract or implement the remaining methods (Serializable::serialize, Serializable::unserialize)"
+%a
+}

composer.json

@@ -24,7 +24,7 @@
     },
     "require-dev": {
         "symfony/class-loader": "~2.2",
-        "symfony/http-kernel": "~2.3.24|~2.5.9|~2.6,>=2.6.2"
+        "symfony/http-kernel": "~2.3.24|~2.5.9|^2.6.2"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Debug\\": "" },

phpunit.xml.dist

@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />