Enable native_constant_invocation CS fixer

Enable the fixer enforcing fully-qualified calls for compiler-optimized functions
Merge branch '2.7' into 2.8
2026-03-24 09:12:18 +01:00 · 2018-07-26 13:13:39 +02:00 · 2018-07-24 12:05:38 +02:00 · 2018-01-03 08:36:31 +01:00 · 2018-01-03 08:23:28 +01:00 · 2018-01-02 16:45:49 +01:00
44 changed files with 1497 additions and 169 deletions
--- a/ApcClassLoader.php
+++ b/ApcClassLoader.php
@@ -16,8 +16,8 @@ namespace Symfony\Component\ClassLoader;
 *
 * It expects an object implementing a findFile method to find the file. This
 * allows using it as a wrapper around the other loaders of the component (the
- * ClassLoader for instance) but also around any other autoloaders following
- * this convention (the Composer one for instance).
+ * ClassLoader and the UniversalClassLoader for instance) but also around any
+ * other autoloaders following this convention (the Composer one for instance).
 *
 *     // with a Symfony autoloader
 *     use Symfony\Component\ClassLoader\ClassLoader;
@@ -57,8 +57,6 @@ class ApcClassLoader
    protected $decorated;

    /**
-     * Constructor.
-     *
     * @param string $prefix    The APC namespace prefix to use
     * @param object $decorated A class loader object that implements the findFile() method
     *
@@ -67,7 +65,7 @@ class ApcClassLoader
     */
    public function __construct($prefix, $decorated)
    {
-        if (!function_exists('apcu_fetch')) {
+        if (!\function_exists('apcu_fetch')) {
            throw new \RuntimeException('Unable to use ApcClassLoader as APC is not installed.');
        }

@@ -136,6 +134,6 @@ class ApcClassLoader
     */
    public function __call($method, $args)
    {
-        return call_user_func_array(array($this->decorated, $method), $args);
+        return \call_user_func_array(array($this->decorated, $method), $args);
    }
 }
--- a/ApcUniversalClassLoader.php
+++ b/ApcUniversalClassLoader.php
@@ -0,0 +1,101 @@
+<?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\ClassLoader;
+
+@trigger_error('The '.__NAMESPACE__.'\ApcUniversalClassLoader class is deprecated since Symfony 2.7 and will be removed in 3.0. Use the Symfony\Component\ClassLoader\ApcClassLoader class instead.', E_USER_DEPRECATED);
+
+/**
+ * ApcUniversalClassLoader implements a "universal" autoloader cached in APC for PHP 5.3.
+ *
+ * It is able to load classes that use either:
+ *
+ *  * The technical interoperability standards for PHP 5.3 namespaces and
+ *    class names (https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md);
+ *
+ *  * The PEAR naming convention for classes (http://pear.php.net/).
+ *
+ * Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be
+ * looked for in a list of locations to ease the vendoring of a sub-set of
+ * classes for large projects.
+ *
+ * Example usage:
+ *
+ *     require 'vendor/symfony/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
+ *     require 'vendor/symfony/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';
+ *
+ *     use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
+ *
+ *     $loader = new ApcUniversalClassLoader('apc.prefix.');
+ *
+ *     // register classes with namespaces
+ *     $loader->registerNamespaces(array(
+ *         'Symfony\Component' => __DIR__.'/component',
+ *         'Symfony' => __DIR__.'/framework',
+ *         'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
+ *     ));
+ *
+ *     // register a library using the PEAR naming convention
+ *     $loader->registerPrefixes(array(
+ *         'Swift_' => __DIR__.'/Swift',
+ *     ));
+ *
+ *     // activate the autoloader
+ *     $loader->register();
+ *
+ * In this example, if you try to use a class in the Symfony\Component
+ * namespace or one of its children (Symfony\Component\Console for instance),
+ * the autoloader will first look for the class under the component/
+ * directory, and it will then fallback to the framework/ directory if not
+ * found before giving up.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Kris Wallsmith <kris@symfony.com>
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ *             Use the {@link ClassLoader} class instead.
+ */
+class ApcUniversalClassLoader extends UniversalClassLoader
+{
+    private $prefix;
+
+    /**
+     * @param string $prefix A prefix to create a namespace in APC
+     *
+     * @throws \RuntimeException
+     */
+    public function __construct($prefix)
+    {
+        if (!\function_exists('apcu_fetch')) {
+            throw new \RuntimeException('Unable to use ApcUniversalClassLoader as APC is not enabled.');
+        }
+
+        $this->prefix = $prefix;
+    }
+
+    /**
+     * Finds a file by class name while caching lookups to APC.
+     *
+     * @param string $class A class name to resolve to file
+     *
+     * @return string|null The path, if found
+     */
+    public function findFile($class)
+    {
+        $file = apcu_fetch($this->prefix.$class, $success);
+
+        if (!$success) {
+            apcu_store($this->prefix.$class, $file = parent::findFile($class) ?: null);
+        }
+
+        return $file;
+    }
+}
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,6 @@
 CHANGELOG
 =========

-3.0.0
-----
-
- * The DebugClassLoader class has been removed
- * The DebugUniversalClassLoader class has been removed
- * The UniversalClassLoader class has been removed
- * The ApcUniversalClassLoader class has been removed
-
 2.4.0
 -----

--- a/ClassCollectionLoader.php
+++ b/ClassCollectionLoader.php
@@ -44,7 +44,10 @@ class ClassCollectionLoader
        self::$loaded[$name] = true;

        if ($adaptive) {
-            $declared = array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());
+            $declared = array_merge(get_declared_classes(), get_declared_interfaces());
+            if (\function_exists('get_declared_traits')) {
+                $declared = array_merge($declared, get_declared_traits());
+            }

            // don't include already declared classes
            $classes = array_diff($classes, $declared);
@@ -55,6 +58,11 @@ class ClassCollectionLoader

        $classes = array_unique($classes);

+        // cache the core classes
+        if (!is_dir($cacheDir) && !@mkdir($cacheDir, 0777, true) && !is_dir($cacheDir)) {
+            throw new \RuntimeException(sprintf('Class Collection Loader was not able to create directory "%s"', $cacheDir));
+        }
+        $cacheDir = rtrim(realpath($cacheDir) ?: $cacheDir, '/'.\DIRECTORY_SEPARATOR);
        $cache = $cacheDir.'/'.$name.$extension;

        // auto-reload
@@ -90,35 +98,64 @@ class ClassCollectionLoader
            return;
        }
        if (!$adaptive) {
-            $declared = array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());
+            $declared = array_merge(get_declared_classes(), get_declared_interfaces());
+            if (\function_exists('get_declared_traits')) {
+                $declared = array_merge($declared, get_declared_traits());
+            }
        }

+        $spacesRegex = '(?:\s*+(?:(?:\#|//)[^\n]*+\n|/\*(?:(?<!\*/).)++)?+)*+';
+        $dontInlineRegex = <<<REGEX
+            '(?:
+               ^<\?php\s.declare.\(.strict_types.=.1.\).;
+               | \b__halt_compiler.\(.\)
+               | \b__(?:DIR|FILE)__\b
+            )'isx
+REGEX;
+        $dontInlineRegex = str_replace('.', $spacesRegex, $dontInlineRegex);
+
+        $cacheDir = explode('/', str_replace(\DIRECTORY_SEPARATOR, '/', $cacheDir));
        $files = array();
        $content = '';
        foreach (self::getOrderedClasses($classes) as $class) {
-            if (in_array($class->getName(), $declared)) {
+            if (\in_array($class->getName(), $declared)) {
                continue;
            }

-            $files[] = $class->getFileName();
+            $files[] = $file = $class->getFileName();
+            $c = file_get_contents($file);

-            $c = preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', file_get_contents($class->getFileName()));
+            if (preg_match($dontInlineRegex, $c)) {
+                $file = explode('/', str_replace(\DIRECTORY_SEPARATOR, '/', $file));

-            // fakes namespace declaration for global code
-            if (!$class->inNamespace()) {
-                $c = "\nnamespace\n{\n".$c."\n}\n";
+                for ($i = 0; isset($file[$i], $cacheDir[$i]); ++$i) {
+                    if ($file[$i] !== $cacheDir[$i]) {
+                        break;
+                    }
+                }
+                if (1 >= $i) {
+                    $file = var_export(implode('/', $file), true);
+                } else {
+                    $file = \array_slice($file, $i);
+                    $file = str_repeat('../', \count($cacheDir) - $i).implode('/', $file);
+                    $file = '__DIR__.'.var_export('/'.$file, true);
+                }
+
+                $c = "\nnamespace {require $file;}";
+            } else {
+                $c = preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', $c);
+
+                // fakes namespace declaration for global code
+                if (!$class->inNamespace()) {
+                    $c = "\nnamespace\n{\n".$c."\n}\n";
+                }
+
+                $c = self::fixNamespaceDeclarations('<?php '.$c);
+                $c = preg_replace('/^\s*<\?php/', '', $c);
            }

-            $c = self::fixNamespaceDeclarations('<?php '.$c);
-            $c = preg_replace('/^\s*<\?php/', '', $c);
-
            $content .= $c;
        }
-
-        // cache the core classes
-        if (!is_dir($cacheDir) && !@mkdir($cacheDir, 0777, true) && !is_dir($cacheDir)) {
-            throw new \RuntimeException(sprintf('Class Collection Loader was not able to create directory "%s"', $cacheDir));
-        }
        self::writeCacheFile($cache, '<?php '.$content);

        if ($autoReload) {
@@ -136,7 +173,7 @@ class ClassCollectionLoader
     */
    public static function fixNamespaceDeclarations($source)
    {
-        if (!function_exists('token_get_all') || !self::$useTokenizer) {
+        if (!\function_exists('token_get_all') || !self::$useTokenizer) {
            if (preg_match('/(^|\s)namespace(.*?)\s*;/', $source)) {
                $source = preg_replace('/(^|\s)namespace(.*?)\s*;/', "$1namespace$2\n{", $source)."}\n";
            }
@@ -153,7 +190,7 @@ class ClassCollectionLoader
            $token = $tokens[$i];
            if (!isset($token[1]) || 'b"' === $token) {
                $rawChunk .= $token;
-            } elseif (in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
+            } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
                // strip comments
                continue;
            } elseif (T_NAMESPACE === $token[0]) {
@@ -163,7 +200,7 @@ class ClassCollectionLoader
                $rawChunk .= $token[1];

                // namespace name and whitespaces
-                while (isset($tokens[++$i][1]) && in_array($tokens[$i][0], array(T_WHITESPACE, T_NS_SEPARATOR, T_STRING))) {
+                while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], array(T_WHITESPACE, T_NS_SEPARATOR, T_STRING))) {
                    $rawChunk .= $tokens[$i][1];
                }
                if ('{' === $tokens[$i]) {
@@ -178,7 +215,7 @@ class ClassCollectionLoader
                do {
                    $token = $tokens[++$i];
                    $output .= isset($token[1]) && 'b"' !== $token ? $token[1] : $token;
-                } while ($token[0] !== T_END_HEREDOC);
+                } while (T_END_HEREDOC !== $token[0]);
                $output .= "\n";
                $rawChunk = '';
            } elseif (T_CONSTANT_ENCAPSED_STRING === $token[0]) {
@@ -195,7 +232,7 @@ class ClassCollectionLoader

        $output .= self::compressCode($rawChunk);

-        if (PHP_VERSION_ID >= 70000) {
+        if (\PHP_VERSION_ID >= 70000) {
            // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
            unset($tokens, $rawChunk);
            gc_mem_caches();
@@ -238,7 +275,13 @@ class ClassCollectionLoader
     */
    private static function writeCacheFile($file, $content)
    {
-        $tmpFile = tempnam(dirname($file), basename($file));
+        $dir = \dirname($file);
+        if (!is_writable($dir)) {
+            throw new \RuntimeException(sprintf('Cache directory "%s" is not writable.', $dir));
+        }
+
+        $tmpFile = tempnam($dir, basename($file));
+
        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
            @chmod($file, 0666 & ~umask());

@@ -251,8 +294,6 @@ class ClassCollectionLoader
    /**
     * Gets an ordered array of passed classes including all their dependencies.
     *
-     * @param array $classes
-     *
     * @return \ReflectionClass[] An array of sorted \ReflectionClass instances (dependencies added if needed)
     *
     * @throws \InvalidArgumentException When a class can't be loaded
@@ -292,10 +333,12 @@ class ClassCollectionLoader

        $traits = array();

-        foreach ($classes as $c) {
-            foreach (self::resolveDependencies(self::computeTraitDeps($c), $c) as $trait) {
-                if ($trait !== $c) {
-                    $traits[] = $trait;
+        if (method_exists('ReflectionClass', 'getTraits')) {
+            foreach ($classes as $c) {
+                foreach (self::resolveDependencies(self::computeTraitDeps($c), $c) as $trait) {
+                    if ($trait !== $c) {
+                        $traits[] = $trait;
+                    }
                }
            }
        }
--- a/ClassLoader.php
+++ b/ClassLoader.php
@@ -91,12 +91,12 @@ class ClassLoader
            return;
        }
        if (isset($this->prefixes[$prefix])) {
-            if (is_array($paths)) {
+            if (\is_array($paths)) {
                $this->prefixes[$prefix] = array_unique(array_merge(
                    $this->prefixes[$prefix],
                    $paths
                ));
-            } elseif (!in_array($paths, $this->prefixes[$prefix])) {
+            } elseif (!\in_array($paths, $this->prefixes[$prefix])) {
                $this->prefixes[$prefix][] = $paths;
            }
        } else {
@@ -170,7 +170,7 @@ class ClassLoader
    {
        if (false !== $pos = strrpos($class, '\\')) {
            // namespaced class name
-            $classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $pos)).DIRECTORY_SEPARATOR;
+            $classPath = str_replace('\\', \DIRECTORY_SEPARATOR, substr($class, 0, $pos)).\DIRECTORY_SEPARATOR;
            $className = substr($class, $pos + 1);
        } else {
            // PEAR-like class name
@@ -178,21 +178,21 @@ class ClassLoader
            $className = $class;
        }

-        $classPath .= str_replace('_', DIRECTORY_SEPARATOR, $className).'.php';
+        $classPath .= str_replace('_', \DIRECTORY_SEPARATOR, $className).'.php';

        foreach ($this->prefixes as $prefix => $dirs) {
            if ($class === strstr($class, $prefix)) {
                foreach ($dirs as $dir) {
-                    if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) {
-                        return $dir.DIRECTORY_SEPARATOR.$classPath;
+                    if (file_exists($dir.\DIRECTORY_SEPARATOR.$classPath)) {
+                        return $dir.\DIRECTORY_SEPARATOR.$classPath;
                    }
                }
            }
        }

        foreach ($this->fallbackDirs as $dir) {
-            if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) {
-                return $dir.DIRECTORY_SEPARATOR.$classPath;
+            if (file_exists($dir.\DIRECTORY_SEPARATOR.$classPath)) {
+                return $dir.\DIRECTORY_SEPARATOR.$classPath;
            }
        }

--- a/ClassMapGenerator.php
+++ b/ClassMapGenerator.php
@@ -11,6 +11,14 @@

 namespace Symfony\Component\ClassLoader;

+if (!\defined('SYMFONY_TRAIT')) {
+    if (\PHP_VERSION_ID >= 50400) {
+        \define('SYMFONY_TRAIT', T_TRAIT);
+    } else {
+        \define('SYMFONY_TRAIT', 0);
+    }
+}
+
 /**
 * ClassMapGenerator.
 *
@@ -45,7 +53,7 @@ class ClassMapGenerator
     */
    public static function createMap($dir)
    {
-        if (is_string($dir)) {
+        if (\is_string($dir)) {
            $dir = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir));
        }

@@ -56,15 +64,15 @@ class ClassMapGenerator
                continue;
            }

-            $path = $file->getRealPath();
+            $path = $file->getRealPath() ?: $file->getPathname();

-            if (pathinfo($path, PATHINFO_EXTENSION) !== 'php') {
+            if ('php' !== pathinfo($path, PATHINFO_EXTENSION)) {
                continue;
            }

            $classes = self::findClasses($path);

-            if (PHP_VERSION_ID >= 70000) {
+            if (\PHP_VERSION_ID >= 70000) {
                // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
                gc_mem_caches();
            }
@@ -106,7 +114,7 @@ class ClassMapGenerator
                    $namespace = '';
                    // If there is a namespace, extract it
                    while (isset($tokens[++$i][1])) {
-                        if (in_array($tokens[$i][0], array(T_STRING, T_NS_SEPARATOR))) {
+                        if (\in_array($tokens[$i][0], array(T_STRING, T_NS_SEPARATOR))) {
                            $namespace .= $tokens[$i][1];
                        }
                    }
@@ -114,7 +122,7 @@ class ClassMapGenerator
                    break;
                case T_CLASS:
                case T_INTERFACE:
-                case T_TRAIT:
+                case SYMFONY_TRAIT:
                    // Skip usage of ::class constant
                    $isClassConstant = false;
                    for ($j = $i - 1; $j > 0; --$j) {
@@ -125,7 +133,7 @@ class ClassMapGenerator
                        if (T_DOUBLE_COLON === $tokens[$j][0]) {
                            $isClassConstant = true;
                            break;
-                        } elseif (!in_array($tokens[$j][0], array(T_WHITESPACE, T_DOC_COMMENT, T_COMMENT))) {
+                        } elseif (!\in_array($tokens[$j][0], array(T_WHITESPACE, T_DOC_COMMENT, T_COMMENT))) {
                            break;
                        }
                    }
--- a/DebugClassLoader.php
+++ b/DebugClassLoader.php
@@ -0,0 +1,118 @@
+<?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\ClassLoader;
+
+@trigger_error('The '.__NAMESPACE__.'\DebugClassLoader class is deprecated since Symfony 2.4 and will be removed in 3.0. Use the Symfony\Component\Debug\DebugClassLoader class instead.', E_USER_DEPRECATED);
+
+/**
+ * Autoloader checking if the class is really defined in the file found.
+ *
+ * The DebugClassLoader will wrap all registered autoloaders providing a
+ * findFile method and will throw an exception if a file is found but does
+ * not declare the class.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Christophe Coevoet <stof@notk.org>
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ *             Use {@link \Symfony\Component\Debug\DebugClassLoader} instead.
+ */
+class DebugClassLoader
+{
+    private $classFinder;
+
+    /**
+     * @param object $classFinder
+     */
+    public function __construct($classFinder)
+    {
+        $this->classFinder = $classFinder;
+    }
+
+    /**
+     * Gets the wrapped class loader.
+     *
+     * @return object a class loader instance
+     */
+    public function getClassLoader()
+    {
+        return $this->classFinder;
+    }
+
+    /**
+     * Replaces all autoloaders implementing a findFile method by a DebugClassLoader wrapper.
+     */
+    public static function enable()
+    {
+        if (!\is_array($functions = spl_autoload_functions())) {
+            return;
+        }
+
+        foreach ($functions as $function) {
+            spl_autoload_unregister($function);
+        }
+
+        foreach ($functions as $function) {
+            if (\is_array($function) && !$function[0] instanceof self && method_exists($function[0], 'findFile')) {
+                $function = array(new static($function[0]), 'loadClass');
+            }
+
+            spl_autoload_register($function);
+        }
+    }
+
+    /**
+     * Unregisters this instance as an autoloader.
+     */
+    public function unregister()
+    {
+        spl_autoload_unregister(array($this, 'loadClass'));
+    }
+
+    /**
+     * Finds a file by class name.
+     *
+     * @param string $class A class name to resolve to file
+     *
+     * @return string|null
+     */
+    public function findFile($class)
+    {
+        return $this->classFinder->findFile($class) ?: null;
+    }
+
+    /**
+     * Loads the given class or interface.
+     *
+     * @param string $class The name of the class
+     *
+     * @return bool|null True, if loaded
+     *
+     * @throws \RuntimeException
+     */
+    public function loadClass($class)
+    {
+        if ($file = $this->classFinder->findFile($class)) {
+            require $file;
+
+            if (!class_exists($class, false) && !interface_exists($class, false) && (!\function_exists('trait_exists') || !trait_exists($class, false))) {
+                if (false !== strpos($class, '/')) {
+                    throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
+                }
+
+                throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
+            }
+
+            return true;
+        }
+    }
+}
--- a/DebugUniversalClassLoader.php
+++ b/DebugUniversalClassLoader.php
@@ -0,0 +1,68 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ClassLoader;
+
+@trigger_error('The '.__NAMESPACE__.'\DebugUniversalClassLoader class is deprecated since Symfony 2.4 and will be removed in 3.0. Use the Symfony\Component\Debug\DebugClassLoader class instead.', E_USER_DEPRECATED);
+
+/**
+ * Checks that the class is actually declared in the included file.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ *             Use the {@link \Symfony\Component\Debug\DebugClassLoader} class instead.
+ */
+class DebugUniversalClassLoader extends UniversalClassLoader
+{
+    /**
+     * Replaces all regular UniversalClassLoader instances by a DebugUniversalClassLoader ones.
+     */
+    public static function enable()
+    {
+        if (!\is_array($functions = spl_autoload_functions())) {
+            return;
+        }
+
+        foreach ($functions as $function) {
+            spl_autoload_unregister($function);
+        }
+
+        foreach ($functions as $function) {
+            if (\is_array($function) && $function[0] instanceof UniversalClassLoader) {
+                $loader = new static();
+                $loader->registerNamespaceFallbacks($function[0]->getNamespaceFallbacks());
+                $loader->registerPrefixFallbacks($function[0]->getPrefixFallbacks());
+                $loader->registerNamespaces($function[0]->getNamespaces());
+                $loader->registerPrefixes($function[0]->getPrefixes());
+                $loader->useIncludePath($function[0]->getUseIncludePath());
+
+                $function[0] = $loader;
+            }
+
+            spl_autoload_register($function);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function loadClass($class)
+    {
+        if ($file = $this->findFile($class)) {
+            require $file;
+
+            if (!class_exists($class, false) && !interface_exists($class, false) && (!\function_exists('trait_exists') || !trait_exists($class, false))) {
+                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));
+            }
+        }
+    }
+}
--- a/2
+++ b/2
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2016 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
--- a/MapClassLoader.php
+++ b/MapClassLoader.php
@@ -21,8 +21,6 @@ class MapClassLoader
    private $map = array();

    /**
-     * Constructor.
-     *
     * @param array $map A map where keys are classes and values the absolute file path
     */
    public function __construct(array $map)
--- a/Psr4ClassLoader.php
+++ b/Psr4ClassLoader.php
@@ -20,9 +20,6 @@ namespace Symfony\Component\ClassLoader;
 */
 class Psr4ClassLoader
 {
-    /**
-     * @var array
-     */
    private $prefixes = array();

    /**
@@ -32,7 +29,7 @@ class Psr4ClassLoader
    public function addPrefix($prefix, $baseDir)
    {
        $prefix = trim($prefix, '\\').'\\';
-        $baseDir = rtrim($baseDir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+        $baseDir = rtrim($baseDir, \DIRECTORY_SEPARATOR).\DIRECTORY_SEPARATOR;
        $this->prefixes[] = array($prefix, $baseDir);
    }

@@ -45,10 +42,11 @@ class Psr4ClassLoader
    {
        $class = ltrim($class, '\\');

-        foreach ($this->prefixes as list($currentPrefix, $currentBaseDir)) {
+        foreach ($this->prefixes as $current) {
+            list($currentPrefix, $currentBaseDir) = $current;
            if (0 === strpos($class, $currentPrefix)) {
-                $classWithoutPrefix = substr($class, strlen($currentPrefix));
-                $file = $currentBaseDir.str_replace('\\', DIRECTORY_SEPARATOR, $classWithoutPrefix).'.php';
+                $classWithoutPrefix = substr($class, \strlen($currentPrefix));
+                $file = $currentBaseDir.str_replace('\\', \DIRECTORY_SEPARATOR, $classWithoutPrefix).'.php';
                if (file_exists($file)) {
                    return $file;
                }
--- a/Tests/ApcClassLoaderTest.php
+++ b/Tests/ApcClassLoaderTest.php
@@ -11,10 +11,11 @@

 namespace Symfony\Component\ClassLoader\Tests;

+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\ApcClassLoader;
 use Symfony\Component\ClassLoader\ClassLoader;

-class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
+class ApcClassLoaderTest extends TestCase
 {
    protected function setUp()
    {
@@ -35,7 +36,7 @@ class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testConstructor()
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');

        $loader = new ApcClassLoader('test.prefix.', $loader);

@@ -48,8 +49,8 @@ class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testLoadClass($className, $testClassName, $message)
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Apc_Pearlike_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc_Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');

        $loader = new ApcClassLoader('test.prefix.', $loader);
        $loader->loadClass($testClassName);
@@ -70,9 +71,9 @@ class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testLoadClassFromFallback($className, $testClassName, $message)
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Apc_Pearlike_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('', array(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/fallback'));
+        $loader->addPrefix('Apc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc_Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('', array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/fallback'));

        $loader = new ApcClassLoader('test.prefix.fallback', $loader);
        $loader->loadClass($testClassName);
@@ -109,32 +110,32 @@ class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
        return array(
           array(
               array(
-                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
-                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
               ),
               'Apc\NamespaceCollision\A\Foo',
               '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
           ),
           array(
               array(
-                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
-                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
               ),
               'Apc\NamespaceCollision\A\Bar',
               '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
           ),
           array(
               array(
-                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
-                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
               ),
               'Apc\NamespaceCollision\A\B\Foo',
               '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
           ),
           array(
               array(
-                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
-                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
               ),
               'Apc\NamespaceCollision\A\B\Bar',
               '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
@@ -161,32 +162,32 @@ class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
        return array(
           array(
               array(
-                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
-                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
               ),
               'ApcPrefixCollision_A_Foo',
               '->loadClass() loads ApcPrefixCollision_A_Foo from alpha.',
           ),
           array(
               array(
-                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
-                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
               ),
               'ApcPrefixCollision_A_Bar',
               '->loadClass() loads ApcPrefixCollision_A_Bar from alpha.',
           ),
           array(
               array(
-                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
-                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
               ),
               'ApcPrefixCollision_A_B_Foo',
               '->loadClass() loads ApcPrefixCollision_A_B_Foo from beta.',
           ),
           array(
               array(
-                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
-                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
               ),
               'ApcPrefixCollision_A_B_Bar',
               '->loadClass() loads ApcPrefixCollision_A_B_Bar from beta.',
--- a/Tests/ClassCollectionLoaderTest.php
+++ b/Tests/ClassCollectionLoaderTest.php
@@ -11,6 +11,7 @@

 namespace Symfony\Component\ClassLoader\Tests;

+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\ClassCollectionLoader;

 require_once __DIR__.'/Fixtures/ClassesWithParents/GInterface.php';
@@ -18,8 +19,11 @@ require_once __DIR__.'/Fixtures/ClassesWithParents/CInterface.php';
 require_once __DIR__.'/Fixtures/ClassesWithParents/B.php';
 require_once __DIR__.'/Fixtures/ClassesWithParents/A.php';

-class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
+class ClassCollectionLoaderTest extends TestCase
 {
+    /**
+     * @requires PHP 5.4
+     */
    public function testTraitDependencies()
    {
        require_once __DIR__.'/Fixtures/deps/traits.php';
@@ -28,14 +32,14 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
        $m = $r->getMethod('getOrderedClasses');
        $m->setAccessible(true);

-        $ordered = $m->invoke('Symfony\Component\ClassLoader\ClassCollectionLoader', array('CTFoo'));
+        $ordered = $m->invoke(null, array('CTFoo'));

        $this->assertEquals(
            array('TD', 'TC', 'TB', 'TA', 'TZ', 'CTFoo'),
            array_map(function ($class) { return $class->getName(); }, $ordered)
        );

-        $ordered = $m->invoke('Symfony\Component\ClassLoader\ClassCollectionLoader', array('CTBar'));
+        $ordered = $m->invoke(null, array('CTBar'));

        $this->assertEquals(
            array('TD', 'TZ', 'TC', 'TB', 'TA', 'CTBar'),
@@ -59,7 +63,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
        $m = $r->getMethod('getOrderedClasses');
        $m->setAccessible(true);

-        $ordered = $m->invoke('Symfony\Component\ClassLoader\ClassCollectionLoader', $classes);
+        $ordered = $m->invoke(null, $classes);

        $this->assertEquals($expected, array_map(function ($class) { return $class->getName(); }, $ordered));
    }
@@ -91,6 +95,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase

    /**
     * @dataProvider getDifferentOrdersForTraits
+     * @requires PHP 5.4
     */
    public function testClassWithTraitsReordering(array $classes)
    {
@@ -116,7 +121,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
        $m = $r->getMethod('getOrderedClasses');
        $m->setAccessible(true);

-        $ordered = $m->invoke('Symfony\Component\ClassLoader\ClassCollectionLoader', $classes);
+        $ordered = $m->invoke(null, $classes);

        $this->assertEquals($expected, array_map(function ($class) { return $class->getName(); }, $ordered));
    }
@@ -134,6 +139,9 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
        );
    }

+    /**
+     * @requires PHP 5.4
+     */
    public function testFixClassWithTraitsOrdering()
    {
        require_once __DIR__.'/Fixtures/ClassesWithParents/CTrait.php';
@@ -155,7 +163,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
        $m = $r->getMethod('getOrderedClasses');
        $m->setAccessible(true);

-        $ordered = $m->invoke('Symfony\Component\ClassLoader\ClassCollectionLoader', $classes);
+        $ordered = $m->invoke(null, $classes);

        $this->assertEquals($expected, array_map(function ($class) { return $class->getName(); }, $ordered));
    }
@@ -216,18 +224,20 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase

    public function testCommentStripping()
    {
-        if (is_file($file = sys_get_temp_dir().'/bar.php')) {
+        if (is_file($file = __DIR__.'/bar.php')) {
            unlink($file);
        }
        spl_autoload_register($r = function ($class) {
            if (0 === strpos($class, 'Namespaced') || 0 === strpos($class, 'Pearlike_')) {
-                require_once __DIR__.'/Fixtures/'.str_replace(array('\\', '_'), '/', $class).'.php';
+                @require_once __DIR__.'/Fixtures/'.str_replace(array('\\', '_'), '/', $class).'.php';
            }
        });

+        $strictTypes = \defined('HHVM_VERSION') ? '' : "\nnamespace {require __DIR__.'/Fixtures/Namespaced/WithStrictTypes.php';}";
+
        ClassCollectionLoader::load(
-            array('Namespaced\\WithComments', 'Pearlike_WithComments'),
-            sys_get_temp_dir(),
+            array('Namespaced\\WithComments', 'Pearlike_WithComments', 'Namespaced\\WithDirMagic', 'Namespaced\\WithFileMagic', 'Namespaced\\WithHaltCompiler', $strictTypes ? 'Namespaced\\WithStrictTypes' : 'Namespaced\\WithComments'),
+            __DIR__,
            'bar',
            false
        );
@@ -266,8 +276,13 @@ class Pearlike_WithComments
 public static $loaded = true;
 }
 }
+namespace {require __DIR__.'/Fixtures/Namespaced/WithDirMagic.php';}
+namespace {require __DIR__.'/Fixtures/Namespaced/WithFileMagic.php';}
+namespace {require __DIR__.'/Fixtures/Namespaced/WithHaltCompiler.php';}
 EOF
-        , str_replace("<?php \n", '', file_get_contents($file)));
+            .$strictTypes,
+            str_replace(array("<?php \n", '\\\\'), array('', '/'), file_get_contents($file))
+        );

        unlink($file);
    }
--- a/Tests/ClassLoaderTest.php
+++ b/Tests/ClassLoaderTest.php
@@ -11,16 +11,17 @@

 namespace Symfony\Component\ClassLoader\Tests;

+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\ClassLoader;

-class ClassLoaderTest extends \PHPUnit_Framework_TestCase
+class ClassLoaderTest extends TestCase
 {
    public function testGetPrefixes()
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Foo', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Bar', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Bas', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Foo', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Bar', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Bas', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $prefixes = $loader->getPrefixes();
        $this->assertArrayHasKey('Foo', $prefixes);
        $this->assertArrayNotHasKey('Foo1', $prefixes);
@@ -31,8 +32,8 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testGetFallbackDirs()
    {
        $loader = new ClassLoader();
-        $loader->addPrefix(null, __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix(null, __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix(null, __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix(null, __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $fallback_dirs = $loader->getFallbackDirs();
        $this->assertCount(2, $fallback_dirs);
    }
@@ -43,8 +44,8 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testLoadClass($className, $testClassName, $message)
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Namespaced2\\', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Pearlike2_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Namespaced2\\', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Pearlike2_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $loader->loadClass($testClassName);
        $this->assertTrue(class_exists($className), $message);
    }
@@ -63,8 +64,8 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testLoadNonexistentClass($className, $testClassName, $message)
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Namespaced2\\', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Pearlike2_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Namespaced2\\', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Pearlike2_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $loader->loadClass($testClassName);
        $this->assertFalse(class_exists($className), $message);
    }
@@ -79,8 +80,8 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testAddPrefixSingle()
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Foo', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Foo', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Foo', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Foo', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
        $prefixes = $loader->getPrefixes();
        $this->assertArrayHasKey('Foo', $prefixes);
        $this->assertCount(1, $prefixes['Foo']);
@@ -122,7 +123,7 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase

        set_include_path(__DIR__.'/Fixtures/includepath'.PATH_SEPARATOR.$includePath);

-        $this->assertEquals(__DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR.'includepath'.DIRECTORY_SEPARATOR.'Foo.php', $loader->findFile('Foo'));
+        $this->assertEquals(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'includepath'.\DIRECTORY_SEPARATOR.'Foo.php', $loader->findFile('Foo'));

        set_include_path($includePath);
    }
@@ -133,9 +134,9 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
    public function testLoadClassFromFallback($className, $testClassName, $message)
    {
        $loader = new ClassLoader();
-        $loader->addPrefix('Namespaced2\\', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('Pearlike2_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
-        $loader->addPrefix('', array(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/fallback'));
+        $loader->addPrefix('Namespaced2\\', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Pearlike2_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('', array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback'));
        $loader->loadClass($testClassName);
        $this->assertTrue(class_exists($className), $message);
    }
@@ -167,64 +168,64 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
        return array(
            array(
                array(
-                    'NamespaceCollision\\C' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                    'NamespaceCollision\\C\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                ),
                'NamespaceCollision\C\Foo',
                '->loadClass() loads NamespaceCollision\C\Foo from alpha.',
            ),
            array(
                array(
-                    'NamespaceCollision\\C\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
-                    'NamespaceCollision\\C' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                ),
                'NamespaceCollision\C\Bar',
                '->loadClass() loads NamespaceCollision\C\Bar from alpha.',
            ),
            array(
                array(
-                    'NamespaceCollision\\C' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                    'NamespaceCollision\\C\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                ),
                'NamespaceCollision\C\B\Foo',
                '->loadClass() loads NamespaceCollision\C\B\Foo from beta.',
            ),
            array(
                array(
-                    'NamespaceCollision\\C\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
-                    'NamespaceCollision\\C' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\C\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\C' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                ),
                'NamespaceCollision\C\B\Bar',
                '->loadClass() loads NamespaceCollision\C\B\Bar from beta.',
            ),
            array(
                array(
-                    'PrefixCollision_C_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                    'PrefixCollision_C_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                ),
                'PrefixCollision_C_Foo',
                '->loadClass() loads PrefixCollision_C_Foo from alpha.',
            ),
            array(
                array(
-                    'PrefixCollision_C_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
-                    'PrefixCollision_C_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                ),
                'PrefixCollision_C_Bar',
                '->loadClass() loads PrefixCollision_C_Bar from alpha.',
            ),
            array(
                array(
-                    'PrefixCollision_C_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
-                    'PrefixCollision_C_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
                ),
                'PrefixCollision_C_B_Foo',
                '->loadClass() loads PrefixCollision_C_B_Foo from beta.',
            ),
            array(
                array(
-                    'PrefixCollision_C_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/beta',
-                    'PrefixCollision_C_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_C_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_C_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
                ),
                'PrefixCollision_C_B_Bar',
                '->loadClass() loads PrefixCollision_C_B_Bar from beta.',
--- a/Tests/ClassMapGeneratorTest.php
+++ b/Tests/ClassMapGeneratorTest.php
@@ -11,9 +11,10 @@

 namespace Symfony\Component\ClassLoader\Tests;

+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\ClassMapGenerator;

-class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
+class ClassMapGeneratorTest extends TestCase
 {
    /**
     * @var string|null
@@ -76,8 +77,11 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
                'Namespaced\\Foo' => realpath(__DIR__).'/Fixtures/Namespaced/Foo.php',
                'Namespaced\\Baz' => realpath(__DIR__).'/Fixtures/Namespaced/Baz.php',
                'Namespaced\\WithComments' => realpath(__DIR__).'/Fixtures/Namespaced/WithComments.php',
-                ),
-            ),
+                'Namespaced\\WithStrictTypes' => realpath(__DIR__).'/Fixtures/Namespaced/WithStrictTypes.php',
+                'Namespaced\\WithHaltCompiler' => realpath(__DIR__).'/Fixtures/Namespaced/WithHaltCompiler.php',
+                'Namespaced\\WithDirMagic' => realpath(__DIR__).'/Fixtures/Namespaced/WithDirMagic.php',
+                'Namespaced\\WithFileMagic' => realpath(__DIR__).'/Fixtures/Namespaced/WithFileMagic.php',
+            )),
            array(__DIR__.'/Fixtures/beta/NamespaceCollision', array(
                'NamespaceCollision\\A\\B\\Bar' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Bar.php',
                'NamespaceCollision\\A\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/A/B/Foo.php',
@@ -102,18 +106,24 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
                'ClassMap\\SomeParent' => realpath(__DIR__).'/Fixtures/classmap/SomeParent.php',
                'ClassMap\\SomeClass' => realpath(__DIR__).'/Fixtures/classmap/SomeClass.php',
            )),
-            array(__DIR__.'/Fixtures/php5.4', array(
+        );
+
+        if (\PHP_VERSION_ID >= 50400) {
+            $data[] = array(__DIR__.'/Fixtures/php5.4', array(
                'TFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
                'CFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
                'Foo\\TBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                'Foo\\IBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                'Foo\\TFooBar' => __DIR__.'/Fixtures/php5.4/traits.php',
                'Foo\\CBar' => __DIR__.'/Fixtures/php5.4/traits.php',
-            )),
-            array(__DIR__.'/Fixtures/php5.5', array(
+            ));
+        }
+
+        if (\PHP_VERSION_ID >= 50500) {
+            $data[] = array(__DIR__.'/Fixtures/php5.5', array(
                'ClassCons\\Foo' => __DIR__.'/Fixtures/php5.5/class_cons.php',
-            )),
-        );
+            ));
+        }

        return $data;
    }
--- a/Tests/Fixtures/LegacyApc/Namespaced/Bar.php
+++ b/Tests/Fixtures/LegacyApc/Namespaced/Bar.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\Namespaced;
+
+class Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Namespaced/Baz.php
+++ b/Tests/Fixtures/LegacyApc/Namespaced/Baz.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\Namespaced;
+
+class Baz
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Namespaced/Foo.php
+++ b/Tests/Fixtures/LegacyApc/Namespaced/Foo.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\Namespaced;
+
+class Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Namespaced/FooBar.php
+++ b/Tests/Fixtures/LegacyApc/Namespaced/FooBar.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\Namespaced;
+
+class FooBar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Pearlike/Bar.php
+++ b/Tests/Fixtures/LegacyApc/Pearlike/Bar.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApc_Pearlike_Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Pearlike/Baz.php
+++ b/Tests/Fixtures/LegacyApc/Pearlike/Baz.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApc_Pearlike_Baz
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/Pearlike/Foo.php
+++ b/Tests/Fixtures/LegacyApc/Pearlike/Foo.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApc_Pearlike_Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/alpha/LegacyApc/LegacyApcPrefixCollision/A/Bar.php
+++ b/Tests/Fixtures/LegacyApc/alpha/LegacyApc/LegacyApcPrefixCollision/A/Bar.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApcPrefixCollision_A_Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/alpha/LegacyApc/LegacyApcPrefixCollision/A/Foo.php
+++ b/Tests/Fixtures/LegacyApc/alpha/LegacyApc/LegacyApcPrefixCollision/A/Foo.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApcPrefixCollision_A_Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/alpha/LegacyApc/NamespaceCollision/A/Bar.php
+++ b/Tests/Fixtures/LegacyApc/alpha/LegacyApc/NamespaceCollision/A/Bar.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\NamespaceCollision\A;
+
+class Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/alpha/LegacyApc/NamespaceCollision/A/Foo.php
+++ b/Tests/Fixtures/LegacyApc/alpha/LegacyApc/NamespaceCollision/A/Foo.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\NamespaceCollision\A;
+
+class Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/beta/LegacyApc/LegacyApcPrefixCollision/A/B/Bar.php
+++ b/Tests/Fixtures/LegacyApc/beta/LegacyApc/LegacyApcPrefixCollision/A/B/Bar.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApcPrefixCollision_A_B_Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/beta/LegacyApc/LegacyApcPrefixCollision/A/B/Foo.php
+++ b/Tests/Fixtures/LegacyApc/beta/LegacyApc/LegacyApcPrefixCollision/A/B/Foo.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApcPrefixCollision_A_B_Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/beta/LegacyApc/NamespaceCollision/A/B/Bar.php
+++ b/Tests/Fixtures/LegacyApc/beta/LegacyApc/NamespaceCollision/A/B/Bar.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\NamespaceCollision\A\B;
+
+class Bar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/beta/LegacyApc/NamespaceCollision/A/B/Foo.php
+++ b/Tests/Fixtures/LegacyApc/beta/LegacyApc/NamespaceCollision/A/B/Foo.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\NamespaceCollision\A\B;
+
+class Foo
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/fallback/LegacyApc/Pearlike/FooBar.php
+++ b/Tests/Fixtures/LegacyApc/fallback/LegacyApc/Pearlike/FooBar.php
@@ -0,0 +1,6 @@
+<?php
+
+class LegacyApc_Pearlike_FooBar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/LegacyApc/fallback/Namespaced/FooBar.php
+++ b/Tests/Fixtures/LegacyApc/fallback/Namespaced/FooBar.php
@@ -0,0 +1,17 @@
+<?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 LegacyApc\Namespaced;
+
+class FooBar
+{
+    public static $loaded = true;
+}
--- a/Tests/Fixtures/Namespaced/WithDirMagic.php
+++ b/Tests/Fixtures/Namespaced/WithDirMagic.php
@@ -0,0 +1,15 @@
+<?php
+
+/*
+ * foo
+ */
+
+namespace Namespaced;
+
+class WithDirMagic
+{
+    public function getDir()
+    {
+        return __DIR__;
+    }
+}
--- a/Tests/Fixtures/Namespaced/WithFileMagic.php
+++ b/Tests/Fixtures/Namespaced/WithFileMagic.php
@@ -0,0 +1,15 @@
+<?php
+
+/*
+ * foo
+ */
+
+namespace Namespaced;
+
+class WithFileMagic
+{
+    public function getFile()
+    {
+        return __FILE__;
+    }
+}
--- a/Tests/Fixtures/Namespaced/WithHaltCompiler.php
+++ b/Tests/Fixtures/Namespaced/WithHaltCompiler.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * foo
+ */
+
+namespace Namespaced;
+
+class WithHaltCompiler
+{
+}
+
+// the end of the script execution
+__halt_compiler(); data
+data
+data
+data
+...
--- a/Tests/Fixtures/Namespaced/WithStrictTypes.php
+++ b/Tests/Fixtures/Namespaced/WithStrictTypes.php
@@ -0,0 +1,13 @@
+<?php
+
+/*
+ * foo
+ */
+
+declare(strict_types=1);
+
+namespace Namespaced;
+
+class WithStrictTypes
+{
+}
--- a/Tests/LegacyApcUniversalClassLoaderTest.php
+++ b/Tests/LegacyApcUniversalClassLoaderTest.php
@@ -0,0 +1,190 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ClassLoader\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
+
+/**
+ * @group legacy
+ */
+class LegacyApcUniversalClassLoaderTest extends TestCase
+{
+    protected function setUp()
+    {
+        if (ini_get('apc.enabled') && ini_get('apc.enable_cli')) {
+            apcu_clear_cache();
+        } else {
+            $this->markTestSkipped('APC is not enabled.');
+        }
+    }
+
+    protected function tearDown()
+    {
+        if (ini_get('apc.enabled') && ini_get('apc.enable_cli')) {
+            apcu_clear_cache();
+        }
+    }
+
+    public function testConstructor()
+    {
+        $loader = new ApcUniversalClassLoader('test.prefix.');
+        $loader->registerNamespace('LegacyApc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+
+        $this->assertEquals($loader->findFile('\LegacyApc\Namespaced\FooBar'), apcu_fetch('test.prefix.\LegacyApc\Namespaced\FooBar'), '__construct() takes a prefix as its first argument');
+    }
+
+    /**
+     * @dataProvider getLoadClassTests
+     */
+    public function testLoadClass($className, $testClassName, $message)
+    {
+        $loader = new ApcUniversalClassLoader('test.prefix.');
+        $loader->registerNamespace('LegacyApc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('LegacyApc_Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->loadClass($testClassName);
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassTests()
+    {
+        return array(
+           array('\\LegacyApc\\Namespaced\\Foo', 'LegacyApc\\Namespaced\\Foo',   '->loadClass() loads LegacyApc\Namespaced\Foo class'),
+           array('LegacyApc_Pearlike_Foo',    'LegacyApc_Pearlike_Foo',      '->loadClass() loads LegacyApc_Pearlike_Foo class'),
+       );
+    }
+
+    /**
+     * @dataProvider getLoadClassFromFallbackTests
+     */
+    public function testLoadClassFromFallback($className, $testClassName, $message)
+    {
+        $loader = new ApcUniversalClassLoader('test.prefix.fallback');
+        $loader->registerNamespace('LegacyApc\Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('LegacyApc_Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerNamespaceFallbacks(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/fallback'));
+        $loader->registerPrefixFallbacks(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/fallback'));
+        $loader->loadClass($testClassName);
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassFromFallbackTests()
+    {
+        return array(
+           array('\\LegacyApc\\Namespaced\\Baz',    'LegacyApc\\Namespaced\\Baz',    '->loadClass() loads LegacyApc\Namespaced\Baz class'),
+           array('LegacyApc_Pearlike_Baz',       'LegacyApc_Pearlike_Baz',       '->loadClass() loads LegacyApc_Pearlike_Baz class'),
+           array('\\LegacyApc\\Namespaced\\FooBar', 'LegacyApc\\Namespaced\\FooBar', '->loadClass() loads LegacyApc\Namespaced\Baz class from fallback dir'),
+           array('LegacyApc_Pearlike_FooBar',    'LegacyApc_Pearlike_FooBar',    '->loadClass() loads LegacyApc_Pearlike_Baz class from fallback dir'),
+       );
+    }
+
+    /**
+     * @dataProvider getLoadClassNamespaceCollisionTests
+     */
+    public function testLoadClassNamespaceCollision($namespaces, $className, $message)
+    {
+        $loader = new ApcUniversalClassLoader('test.prefix.collision.');
+        $loader->registerNamespaces($namespaces);
+
+        $loader->loadClass($className);
+
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassNamespaceCollisionTests()
+    {
+        return array(
+           array(
+               array(
+                   'LegacyApc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha',
+                   'LegacyApc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta',
+               ),
+               'LegacyApc\NamespaceCollision\A\Foo',
+               '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
+           ),
+           array(
+               array(
+                   'LegacyApc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta',
+                   'LegacyApc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha',
+               ),
+               'LegacyApc\NamespaceCollision\A\Bar',
+               '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
+           ),
+           array(
+               array(
+                   'LegacyApc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha',
+                   'LegacyApc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta',
+               ),
+               'LegacyApc\NamespaceCollision\A\B\Foo',
+               '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
+           ),
+           array(
+               array(
+                   'LegacyApc\\NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta',
+                   'LegacyApc\\NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha',
+               ),
+               'LegacyApc\NamespaceCollision\A\B\Bar',
+               '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
+           ),
+       );
+    }
+
+    /**
+     * @dataProvider getLoadClassPrefixCollisionTests
+     */
+    public function testLoadClassPrefixCollision($prefixes, $className, $message)
+    {
+        $loader = new ApcUniversalClassLoader('test.prefix.collision.');
+        $loader->registerPrefixes($prefixes);
+
+        $loader->loadClass($className);
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassPrefixCollisionTests()
+    {
+        return array(
+           array(
+               array(
+                   'LegacyApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha/LegacyApc',
+                   'LegacyApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta/LegacyApc',
+               ),
+               'LegacyApcPrefixCollision_A_Foo',
+               '->loadClass() loads LegacyApcPrefixCollision_A_Foo from alpha.',
+           ),
+           array(
+               array(
+                   'LegacyApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta/LegacyApc',
+                   'LegacyApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha/LegacyApc',
+               ),
+               'LegacyApcPrefixCollision_A_Bar',
+               '->loadClass() loads LegacyApcPrefixCollision_A_Bar from alpha.',
+           ),
+           array(
+               array(
+                   'LegacyApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha/LegacyApc',
+                   'LegacyApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta/LegacyApc',
+               ),
+               'LegacyApcPrefixCollision_A_B_Foo',
+               '->loadClass() loads LegacyApcPrefixCollision_A_B_Foo from beta.',
+           ),
+           array(
+               array(
+                   'LegacyApcPrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/beta/LegacyApc',
+                   'LegacyApcPrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/LegacyApc/alpha/LegacyApc',
+               ),
+               'LegacyApcPrefixCollision_A_B_Bar',
+               '->loadClass() loads LegacyApcPrefixCollision_A_B_Bar from beta.',
+           ),
+       );
+    }
+}
--- a/Tests/LegacyUniversalClassLoaderTest.php
+++ b/Tests/LegacyUniversalClassLoaderTest.php
@@ -0,0 +1,224 @@
+<?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\ClassLoader\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\ClassLoader\UniversalClassLoader;
+
+/**
+ * @group legacy
+ */
+class LegacyUniversalClassLoaderTest extends TestCase
+{
+    /**
+     * @dataProvider getLoadClassTests
+     */
+    public function testLoadClass($className, $testClassName, $message)
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespace('Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $this->assertTrue($loader->loadClass($testClassName));
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassTests()
+    {
+        return array(
+            array('\\Namespaced\\Foo', 'Namespaced\\Foo',   '->loadClass() loads Namespaced\Foo class'),
+            array('\\Pearlike_Foo',    'Pearlike_Foo',      '->loadClass() loads Pearlike_Foo class'),
+        );
+    }
+
+    public function testUseIncludePath()
+    {
+        $loader = new UniversalClassLoader();
+        $this->assertFalse($loader->getUseIncludePath());
+
+        $this->assertNull($loader->findFile('Foo'));
+
+        $includePath = get_include_path();
+
+        $loader->useIncludePath(true);
+        $this->assertTrue($loader->getUseIncludePath());
+
+        set_include_path(__DIR__.'/Fixtures/includepath'.PATH_SEPARATOR.$includePath);
+
+        $this->assertEquals(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'includepath'.\DIRECTORY_SEPARATOR.'Foo.php', $loader->findFile('Foo'));
+
+        set_include_path($includePath);
+    }
+
+    public function testGetNamespaces()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespace('Foo', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerNamespace('Bar', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerNamespace('Bas', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $namespaces = $loader->getNamespaces();
+        $this->assertArrayHasKey('Foo', $namespaces);
+        $this->assertArrayNotHasKey('Foo1', $namespaces);
+        $this->assertArrayHasKey('Bar', $namespaces);
+        $this->assertArrayHasKey('Bas', $namespaces);
+    }
+
+    public function testGetPrefixes()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerPrefix('Foo', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('Bar', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('Bas', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $prefixes = $loader->getPrefixes();
+        $this->assertArrayHasKey('Foo', $prefixes);
+        $this->assertArrayNotHasKey('Foo1', $prefixes);
+        $this->assertArrayHasKey('Bar', $prefixes);
+        $this->assertArrayHasKey('Bas', $prefixes);
+    }
+
+    /**
+     * @dataProvider getLoadClassFromFallbackTests
+     */
+    public function testLoadClassFromFallback($className, $testClassName, $message)
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespace('Namespaced', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerPrefix('Pearlike_', __DIR__.\DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->registerNamespaceFallbacks(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback'));
+        $loader->registerPrefixFallbacks(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback'));
+        $this->assertTrue($loader->loadClass($testClassName));
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassFromFallbackTests()
+    {
+        return array(
+            array('\\Namespaced\\Baz',    'Namespaced\\Baz',    '->loadClass() loads Namespaced\Baz class'),
+            array('\\Pearlike_Baz',       'Pearlike_Baz',       '->loadClass() loads Pearlike_Baz class'),
+            array('\\Namespaced\\FooBar', 'Namespaced\\FooBar', '->loadClass() loads Namespaced\Baz class from fallback dir'),
+            array('\\Pearlike_FooBar',    'Pearlike_FooBar',    '->loadClass() loads Pearlike_Baz class from fallback dir'),
+        );
+    }
+
+    public function testRegisterPrefixFallback()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerPrefixFallback(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback');
+        $this->assertEquals(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/fallback'), $loader->getPrefixFallbacks());
+    }
+
+    public function testRegisterNamespaceFallback()
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespaceFallback(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Namespaced/fallback');
+        $this->assertEquals(array(__DIR__.\DIRECTORY_SEPARATOR.'Fixtures/Namespaced/fallback'), $loader->getNamespaceFallbacks());
+    }
+
+    /**
+     * @dataProvider getLoadClassNamespaceCollisionTests
+     */
+    public function testLoadClassNamespaceCollision($namespaces, $className, $message)
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerNamespaces($namespaces);
+
+        $this->assertTrue($loader->loadClass($className));
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassNamespaceCollisionTests()
+    {
+        return array(
+            array(
+                array(
+                    'NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                ),
+                'NamespaceCollision\A\Foo',
+                '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
+            ),
+            array(
+                array(
+                    'NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                ),
+                'NamespaceCollision\A\Bar',
+                '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
+            ),
+            array(
+                array(
+                    'NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                ),
+                'NamespaceCollision\A\B\Foo',
+                '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
+            ),
+            array(
+                array(
+                    'NamespaceCollision\\A\\B' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'NamespaceCollision\\A' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                ),
+                'NamespaceCollision\A\B\Bar',
+                '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
+            ),
+        );
+    }
+
+    /**
+     * @dataProvider getLoadClassPrefixCollisionTests
+     */
+    public function testLoadClassPrefixCollision($prefixes, $className, $message)
+    {
+        $loader = new UniversalClassLoader();
+        $loader->registerPrefixes($prefixes);
+
+        $this->assertTrue($loader->loadClass($className));
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassPrefixCollisionTests()
+    {
+        return array(
+            array(
+                array(
+                    'PrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                ),
+                'PrefixCollision_A_Foo',
+                '->loadClass() loads PrefixCollision_A_Foo from alpha.',
+            ),
+            array(
+                array(
+                    'PrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                ),
+                'PrefixCollision_A_Bar',
+                '->loadClass() loads PrefixCollision_A_Bar from alpha.',
+            ),
+            array(
+                array(
+                    'PrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                    'PrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                ),
+                'PrefixCollision_A_B_Foo',
+                '->loadClass() loads PrefixCollision_A_B_Foo from beta.',
+            ),
+            array(
+                array(
+                    'PrefixCollision_A_B_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/beta',
+                    'PrefixCollision_A_' => __DIR__.\DIRECTORY_SEPARATOR.'Fixtures/alpha',
+                ),
+                'PrefixCollision_A_B_Bar',
+                '->loadClass() loads PrefixCollision_A_B_Bar from beta.',
+            ),
+        );
+    }
+}
--- a/Tests/Psr4ClassLoaderTest.php
+++ b/Tests/Psr4ClassLoaderTest.php
@@ -11,9 +11,10 @@

 namespace Symfony\Component\ClassLoader\Tests;

+use PHPUnit\Framework\TestCase;
 use Symfony\Component\ClassLoader\Psr4ClassLoader;

-class Psr4ClassLoaderTest extends \PHPUnit_Framework_TestCase
+class Psr4ClassLoaderTest extends TestCase
 {
    /**
     * @param string $className
@@ -24,7 +25,7 @@ class Psr4ClassLoaderTest extends \PHPUnit_Framework_TestCase
        $loader = new Psr4ClassLoader();
        $loader->addPrefix(
            'Acme\\DemoLib',
-            __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR.'psr-4'
+            __DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'psr-4'
        );
        $loader->loadClass($className);
        $this->assertTrue(class_exists($className), sprintf('loadClass() should load %s', $className));
@@ -52,7 +53,7 @@ class Psr4ClassLoaderTest extends \PHPUnit_Framework_TestCase
        $loader = new Psr4ClassLoader();
        $loader->addPrefix(
            'Acme\\DemoLib',
-            __DIR__.DIRECTORY_SEPARATOR.'Fixtures'.DIRECTORY_SEPARATOR.'psr-4'
+            __DIR__.\DIRECTORY_SEPARATOR.'Fixtures'.\DIRECTORY_SEPARATOR.'psr-4'
        );
        $loader->loadClass($className);
        $this->assertFalse(class_exists($className), sprintf('loadClass() should not load %s', $className));
--- a/UniversalClassLoader.php
+++ b/UniversalClassLoader.php
@@ -0,0 +1,307 @@
+<?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\ClassLoader;
+
+@trigger_error('The '.__NAMESPACE__.'\UniversalClassLoader class is deprecated since Symfony 2.7 and will be removed in 3.0. Use the Symfony\Component\ClassLoader\ClassLoader class instead.', E_USER_DEPRECATED);
+
+/**
+ * UniversalClassLoader implements a "universal" autoloader for PHP 5.3.
+ *
+ * It is able to load classes that use either:
+ *
+ *  * The technical interoperability standards for PHP 5.3 namespaces and
+ *    class names (https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md);
+ *
+ *  * The PEAR naming convention for classes (http://pear.php.net/).
+ *
+ * Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be
+ * looked for in a list of locations to ease the vendoring of a sub-set of
+ * classes for large projects.
+ *
+ * Example usage:
+ *
+ *     $loader = new UniversalClassLoader();
+ *
+ *     // register classes with namespaces
+ *     $loader->registerNamespaces(array(
+ *         'Symfony\Component' => __DIR__.'/component',
+ *         'Symfony' => __DIR__.'/framework',
+ *         'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
+ *     ));
+ *
+ *     // register a library using the PEAR naming convention
+ *     $loader->registerPrefixes(array(
+ *         'Swift_' => __DIR__.'/Swift',
+ *     ));
+ *
+ *
+ *     // to enable searching the include path (e.g. for PEAR packages)
+ *     $loader->useIncludePath(true);
+ *
+ *     // activate the autoloader
+ *     $loader->register();
+ *
+ * In this example, if you try to use a class in the Symfony\Component
+ * namespace or one of its children (Symfony\Component\Console for instance),
+ * the autoloader will first look for the class under the component/
+ * directory, and it will then fallback to the framework/ directory if not
+ * found before giving up.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ *             Use the {@link ClassLoader} class instead.
+ */
+class UniversalClassLoader
+{
+    private $namespaces = array();
+    private $prefixes = array();
+    private $namespaceFallbacks = array();
+    private $prefixFallbacks = array();
+    private $useIncludePath = false;
+
+    /**
+     * Turns on searching the include for class files. Allows easy loading
+     * of installed PEAR packages.
+     *
+     * @param bool $useIncludePath
+     */
+    public function useIncludePath($useIncludePath)
+    {
+        $this->useIncludePath = (bool) $useIncludePath;
+    }
+
+    /**
+     * Can be used to check if the autoloader uses the include path to check
+     * for classes.
+     *
+     * @return bool
+     */
+    public function getUseIncludePath()
+    {
+        return $this->useIncludePath;
+    }
+
+    /**
+     * Gets the configured namespaces.
+     *
+     * @return array A hash with namespaces as keys and directories as values
+     */
+    public function getNamespaces()
+    {
+        return $this->namespaces;
+    }
+
+    /**
+     * Gets the configured class prefixes.
+     *
+     * @return array A hash with class prefixes as keys and directories as values
+     */
+    public function getPrefixes()
+    {
+        return $this->prefixes;
+    }
+
+    /**
+     * Gets the directory(ies) to use as a fallback for namespaces.
+     *
+     * @return array An array of directories
+     */
+    public function getNamespaceFallbacks()
+    {
+        return $this->namespaceFallbacks;
+    }
+
+    /**
+     * Gets the directory(ies) to use as a fallback for class prefixes.
+     *
+     * @return array An array of directories
+     */
+    public function getPrefixFallbacks()
+    {
+        return $this->prefixFallbacks;
+    }
+
+    /**
+     * Registers the directory to use as a fallback for namespaces.
+     *
+     * @param array $dirs An array of directories
+     */
+    public function registerNamespaceFallbacks(array $dirs)
+    {
+        $this->namespaceFallbacks = $dirs;
+    }
+
+    /**
+     * Registers a directory to use as a fallback for namespaces.
+     *
+     * @param string $dir A directory
+     */
+    public function registerNamespaceFallback($dir)
+    {
+        $this->namespaceFallbacks[] = $dir;
+    }
+
+    /**
+     * Registers directories to use as a fallback for class prefixes.
+     *
+     * @param array $dirs An array of directories
+     */
+    public function registerPrefixFallbacks(array $dirs)
+    {
+        $this->prefixFallbacks = $dirs;
+    }
+
+    /**
+     * Registers a directory to use as a fallback for class prefixes.
+     *
+     * @param string $dir A directory
+     */
+    public function registerPrefixFallback($dir)
+    {
+        $this->prefixFallbacks[] = $dir;
+    }
+
+    /**
+     * Registers an array of namespaces.
+     *
+     * @param array $namespaces An array of namespaces (namespaces as keys and locations as values)
+     */
+    public function registerNamespaces(array $namespaces)
+    {
+        foreach ($namespaces as $namespace => $locations) {
+            $this->namespaces[$namespace] = (array) $locations;
+        }
+    }
+
+    /**
+     * Registers a namespace.
+     *
+     * @param string       $namespace The namespace
+     * @param array|string $paths     The location(s) of the namespace
+     */
+    public function registerNamespace($namespace, $paths)
+    {
+        $this->namespaces[$namespace] = (array) $paths;
+    }
+
+    /**
+     * Registers an array of classes using the PEAR naming convention.
+     *
+     * @param array $classes An array of classes (prefixes as keys and locations as values)
+     */
+    public function registerPrefixes(array $classes)
+    {
+        foreach ($classes as $prefix => $locations) {
+            $this->prefixes[$prefix] = (array) $locations;
+        }
+    }
+
+    /**
+     * Registers a set of classes using the PEAR naming convention.
+     *
+     * @param string       $prefix The classes prefix
+     * @param array|string $paths  The location(s) of the classes
+     */
+    public function registerPrefix($prefix, $paths)
+    {
+        $this->prefixes[$prefix] = (array) $paths;
+    }
+
+    /**
+     * Registers this instance as an autoloader.
+     *
+     * @param bool $prepend Whether to prepend the autoloader or not
+     */
+    public function register($prepend = false)
+    {
+        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+    }
+
+    /**
+     * Loads the given class or interface.
+     *
+     * @param string $class The name of the class
+     *
+     * @return bool|null True, if loaded
+     */
+    public function loadClass($class)
+    {
+        if ($file = $this->findFile($class)) {
+            require $file;
+
+            return true;
+        }
+    }
+
+    /**
+     * Finds the path to the file where the class is defined.
+     *
+     * @param string $class The name of the class
+     *
+     * @return string|null The path, if found
+     */
+    public function findFile($class)
+    {
+        if (false !== $pos = strrpos($class, '\\')) {
+            // namespaced class name
+            $namespace = substr($class, 0, $pos);
+            $className = substr($class, $pos + 1);
+            $normalizedClass = str_replace('\\', \DIRECTORY_SEPARATOR, $namespace).\DIRECTORY_SEPARATOR.str_replace('_', \DIRECTORY_SEPARATOR, $className).'.php';
+            foreach ($this->namespaces as $ns => $dirs) {
+                if (0 !== strpos($namespace, $ns)) {
+                    continue;
+                }
+
+                foreach ($dirs as $dir) {
+                    $file = $dir.\DIRECTORY_SEPARATOR.$normalizedClass;
+                    if (is_file($file)) {
+                        return $file;
+                    }
+                }
+            }
+
+            foreach ($this->namespaceFallbacks as $dir) {
+                $file = $dir.\DIRECTORY_SEPARATOR.$normalizedClass;
+                if (is_file($file)) {
+                    return $file;
+                }
+            }
+        } else {
+            // PEAR-like class name
+            $normalizedClass = str_replace('_', \DIRECTORY_SEPARATOR, $class).'.php';
+            foreach ($this->prefixes as $prefix => $dirs) {
+                if (0 !== strpos($class, $prefix)) {
+                    continue;
+                }
+
+                foreach ($dirs as $dir) {
+                    $file = $dir.\DIRECTORY_SEPARATOR.$normalizedClass;
+                    if (is_file($file)) {
+                        return $file;
+                    }
+                }
+            }
+
+            foreach ($this->prefixFallbacks as $dir) {
+                $file = $dir.\DIRECTORY_SEPARATOR.$normalizedClass;
+                if (is_file($file)) {
+                    return $file;
+                }
+            }
+        }
+
+        if ($this->useIncludePath && $file = stream_resolve_include_path($normalizedClass)) {
+            return $file;
+        }
+    }
+}
--- a/WinCacheClassLoader.php
+++ b/WinCacheClassLoader.php
@@ -16,10 +16,12 @@ namespace Symfony\Component\ClassLoader;
 *
 * It expects an object implementing a findFile method to find the file. This
 * allow using it as a wrapper around the other loaders of the component (the
- * ClassLoader for instance) but also around any other autoloaders following
- * this convention (the Composer one for instance).
+ * ClassLoader and the UniversalClassLoader for instance) but also around any
+ * other autoloaders following this convention (the Composer one for instance).
 *
 *     // with a Symfony autoloader
+ *     use Symfony\Component\ClassLoader\ClassLoader;
+ *
 *     $loader = new ClassLoader();
 *     $loader->addPrefix('Symfony\Component', __DIR__.'/component');
 *     $loader->addPrefix('Symfony',           __DIR__.'/framework');
@@ -56,8 +58,6 @@ class WinCacheClassLoader
    protected $decorated;

    /**
-     * Constructor.
-     *
     * @param string $prefix    The WinCache namespace prefix to use
     * @param object $decorated A class loader object that implements the findFile() method
     *
@@ -66,7 +66,7 @@ class WinCacheClassLoader
     */
    public function __construct($prefix, $decorated)
    {
-        if (!extension_loaded('wincache')) {
+        if (!\extension_loaded('wincache')) {
            throw new \RuntimeException('Unable to use WinCacheClassLoader as WinCache is not enabled.');
        }

@@ -135,6 +135,6 @@ class WinCacheClassLoader
     */
    public function __call($method, $args)
    {
-        return call_user_func_array(array($this->decorated, $method), $args);
+        return \call_user_func_array(array($this->decorated, $method), $args);
    }
 }
--- a/XcacheClassLoader.php
+++ b/XcacheClassLoader.php
@@ -16,10 +16,12 @@ namespace Symfony\Component\ClassLoader;
 *
 * It expects an object implementing a findFile method to find the file. This
 * allows using it as a wrapper around the other loaders of the component (the
- * ClassLoader for instance) but also around any other autoloaders following
- * this convention (the Composer one for instance).
+ * ClassLoader and the UniversalClassLoader for instance) but also around any
+ * other autoloaders following this convention (the Composer one for instance).
 *
 *     // with a Symfony autoloader
+ *     use Symfony\Component\ClassLoader\ClassLoader;
+ *
 *     $loader = new ClassLoader();
 *     $loader->addPrefix('Symfony\Component', __DIR__.'/component');
 *     $loader->addPrefix('Symfony',           __DIR__.'/framework');
@@ -47,17 +49,9 @@ namespace Symfony\Component\ClassLoader;
 class XcacheClassLoader
 {
    private $prefix;
-
-    /**
-     * A class loader object that implements the findFile() method.
-     *
-     * @var object
-     */
    private $decorated;

    /**
-     * Constructor.
-     *
     * @param string $prefix    The XCache namespace prefix to use
     * @param object $decorated A class loader object that implements the findFile() method
     *
@@ -66,7 +60,7 @@ class XcacheClassLoader
     */
    public function __construct($prefix, $decorated)
    {
-        if (!extension_loaded('xcache')) {
+        if (!\extension_loaded('xcache')) {
            throw new \RuntimeException('Unable to use XcacheClassLoader as XCache is not enabled.');
        }

@@ -136,6 +130,6 @@ class XcacheClassLoader
     */
    public function __call($method, $args)
    {
-        return call_user_func_array(array($this->decorated, $method), $args);
+        return \call_user_func_array(array($this->decorated, $method), $args);
    }
 }
--- a/composer.json
+++ b/composer.json
@@ -17,14 +17,11 @@
    ],
    "minimum-stability": "dev",
    "require": {
-        "php": ">=5.5.9"
-    },
-    "require-dev": {
-        "symfony/finder": "~2.8|~3.0",
+        "php": ">=5.3.9",
        "symfony/polyfill-apcu": "~1.1"
    },
-    "suggest": {
-        "symfony/polyfill-apcu": "For using ApcClassLoader on HHVM"
+    "require-dev": {
+        "symfony/finder": "^2.0.5|~3.0.0"
    },
    "autoload": {
        "psr-4": { "Symfony\\Component\\ClassLoader\\": "" },
@@ -34,7 +31,7 @@
    },
    "extra": {
        "branch-alias": {
-            "dev-master": "3.0-dev"
+            "dev-master": "2.8-dev"
        }
    }
 }
--- a/phpunit.xml.dist
+++ b/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" />
Author	SHA1	Message	Date
Nicolas Grekas	f65a559906	Enable native_constant_invocation CS fixer	2018-07-26 13:13:39 +02:00
Christophe Coevoet	dadfb73e2f	Enable the fixer enforcing fully-qualified calls for compiler-optimized functions	2018-07-24 12:05:38 +02:00
Fabien Potencier	f87f46e5e1	Merge branch '2.7' into 2.8 * 2.7: fixed years in copyright	2018-01-03 08:36:31 +01:00
Fabien Potencier	78710673c0	fixed years in copyright	2018-01-03 08:23:28 +01:00
Nicolas Grekas	a50bb5c44e	Merge branch '2.7' into 2.8 * 2.7: Clean up Update return type in docblock. PHP CS Fixer: no need to exclude xml and yml files Update LICENSE year... forever	2018-01-02 16:45:49 +01:00
Kévin Dunglas	9dac4c57cf	Update LICENSE year... forever	2017-12-31 13:13:41 +01:00
Fabien Potencier	ff0b32db69	Merge branch '2.7' into 2.8 * 2.7: fixed some deprecation messages	2017-12-31 06:04:01 +01:00
Fabien Potencier	59ab31e13c	fixed some deprecation messages	2017-12-31 05:55:05 +01:00
Nicolas Grekas	5d7aa644f5	Merge branch '2.7' into 2.8 * 2.7: [Intl] Make intl-data tests pass and save language aliases again Remove useless docblocks	2017-11-05 16:25:56 +01:00
Nicolas Grekas	eb2590d94c	Remove useless docblocks	2017-10-29 10:49:53 +01:00
Nicolas Grekas	5990564047	Merge branch '2.7' into 2.8 * 2.7: [DI] minor docblock fixes	2017-10-24 15:48:52 +02:00
Nicolas Grekas	5d77753a96	[DI] minor docblock fixes	2017-10-24 13:40:19 +02:00
Nicolas Grekas	f735c66436	Merge branch '2.7' into 2.8 * 2.7: (22 commits) Tests and fix for issue in array model data in EntityType field with multiple=true [Form] Fixed PercentToLocalizedStringTransformer to accept both comma and dot as decimal separator, if possible removed useless PHPDoc [Form] Fix FormInterface::submit() annotation PdoSessionHandler: fix advisory lock for pgsql when session.sid_bits_per_character > 4 HttpCache does not consider ESI resources in HEAD requests Fix translation for "This field was not expected" [Routing] Enhance Route(Collection) docblocks Added improvement for accuracy in MoneyToLocalizedStringTransformer. Removed unused private property Use correct verb form in the pull request template Use PHP_MAXPATHLEN in Filesystem. Added null as explicit return type (?TokenInterface) [FrameworkBundle] Fix Routing\DelegatingLoader Render all line breaks according to the exception message [Form] Fix phpdoc [DI] remove confusing code [Form] Fixed GroupSequence with "constraints" option [Validator] Clarify UUID validator behavior [Filesystem] Fixed makePathRelative ...	2017-10-01 23:00:16 +02:00
Fabien Potencier	f4278d53d1	minor #24342 removed useless PHPDoc (OskarStark) This PR was squashed before being merged into the 2.7 branch (closes #24342). Discussion ---------- removed useless PHPDoc \| Q \| A \| ------------- \| --- \| Branch? \| 2.7 \| Bug fix? \| no \| New feature? \| no <!-- don't forget updating src/*/CHANGELOG.md files --> \| BC breaks? \| no \| Deprecations? \| no <!-- don't forget updating UPGRADE-.md files --> \| Tests pass? \| yes \| Fixed tickets \| \| License \| MIT \| Doc PR \| n/a Commits ------- 5ee9043d8b removed useless PHPDoc	2017-09-30 07:00:25 -07:00
Oskar Stark	9ae87e8c34	removed useless PHPDoc	2017-09-30 07:00:23 -07:00
Nicolas Grekas	13eed20cc4	Merge branch '2.7' into 2.8 * 2.7: [CS][2.7] yoda_style, no_unneeded_curly_braces, no_unneeded_final_method, semicolon_after_instruction	2017-09-15 11:59:38 +02:00
SpacePossum	f8843095b2	[CS][2.7] yoda_style, no_unneeded_curly_braces, no_unneeded_final_method, semicolon_after_instruction	2017-09-15 11:46:57 +02:00
Fabien Potencier	151afda88c	Merge branch '2.7' into 2.8 * 2.7: Fix indent of methods	2017-07-05 09:50:35 +03:00
Dariusz	2c4235602f	Fix indent of methods	2017-07-04 23:00:55 +02:00
Fabien Potencier	48b96f2fa9	Merge branch '2.7' into 2.8 * 2.7: Using FQ name for PHP_VERSION_ID [Form] Fix \IntlDateFormatter timezone parameter usage to bypass PHP bug #66323 Harden the debugging of Twig filters and functions bumped Symfony version to 2.7.29 updated VERSION for 2.7.28 update CONTRIBUTORS for 2.7.28 updated CHANGELOG for 2.7.28	2017-06-01 13:52:29 -07:00
Fabien Potencier	8bfdaa2e7a	Using FQ name for PHP_VERSION_ID	2017-06-01 13:44:56 -07:00
Fabien Potencier	6789dc86c9	Merge branch '2.7' into 2.8 * 2.7: fail when detecting risky tests	2017-04-12 07:07:15 -07:00
Christian Flothmann	fdb4806d2e	fail when detecting risky tests	2017-04-12 09:39:27 +02:00
Fabien Potencier	2c8de07a8a	fixed Composer constraints	2017-02-18 11:13:35 -08:00
Fabien Potencier	b6e2bb88a8	fixed Composer constraints	2017-02-18 10:28:08 -08:00
Nicolas Grekas	a6f009ccd5	Merge branch '2.7' into 2.8 * 2.7: Update to PHPUnit namespaces remove translation data collector when not usable	2017-02-18 18:06:33 +01:00
Peter Rehm	64d2af707a	Update to PHPUnit namespaces	2017-02-18 08:02:39 -08:00
Fabien Potencier	4f6bbee7b6	Merge branch '2.7' into 2.8 * 2.7: fixed typo Revert "fixed typo" fixed typo fixed CS Avoid setting request attributes from signature arguments in AnnotationClassLoader [DependencyInjection] Add some missing typehints in YamlFileLoader [DependencyInjection] minor: Fix a DocBlock [HttpKernel] Give higher priority to adding request formats [FrameworkBundle] Fix third level headers for MarkdownDescriptor [TwigBundle] do not lose already set method calls #20411 fix Yaml parsing for very long quoted strings CS: apply is_null DX: remove invalid inheritdoc bumped Symfony version to 2.7.24 updated VERSION for 2.7.23 update CONTRIBUTORS for 2.7.23 updated CHANGELOG for 2.7.23 [FrameworkBundle] Skip test if xdebug.file_link_format is defined.	2017-01-21 08:40:50 -08:00
Fabien Potencier	44816c55e9	fixed CS	2017-01-20 08:54:19 -08:00
Nicolas Grekas	7c46951128	Merge branch '2.7' into 2.8 * 2.7: [DI] Dont share service when no id provided Fix Container and PhpDumper test inaccuracies [DI] Fix missing new line after private alias [ClassLoader] Throw an exception if the cache is not writeable Fixing regression in TwigEngine exception handling.	2017-01-10 15:03:07 +01:00
Grégoire Pineau	1108382429	[ClassLoader] Throw an exception if the cache is not writeable	2017-01-09 15:44:50 +01:00
Fabien Potencier	4332e482b5	Merge branch '2.7' into 2.8 * 2.7: updated LICENSE year Fixed `@return self` with `$this`	2017-01-02 12:30:24 -08:00
Fabien Potencier	2e19afbcc7	updated LICENSE year	2017-01-02 12:30:00 -08:00
Fabien Potencier	f7fe9d14e1	Merge branch '2.7' into 2.8 * 2.7: [ClassLoader] Use only forward slashes in generated class map ensure the proper context for nested validations bug #20653 [WebProfilerBundle] Profiler includes ghost panels	2016-11-29 09:25:54 +01:00
Nicolas Grekas	65ac4dbf59	[ClassLoader] Use only forward slashes in generated class map	2016-11-29 09:16:08 +01:00
Nicolas Grekas	db9c33f62d	Merge branch '2.7' into 2.8 * 2.7: [ClassLoader] Fix ClassCollectionLoader inlining with __halt_compiler	2016-11-15 07:06:39 -05:00
Giorgio Premi	c060834942	[ClassLoader] Fix ClassCollectionLoader inlining with __halt_compiler	2016-11-15 04:22:02 -05:00
Nicolas Grekas	a4d05c1031	Merge branch '2.7' into 2.8 * 2.7: Compatibility with Twig 1.27 Enhance GAE compat by removing some realpath() bumped Symfony version to 2.7.21 updated VERSION for 2.7.20 update CONTRIBUTORS for 2.7.20 updated CHANGELOG for 2.7.20 [SecurityBundle] Fix twig-bridge lowest dep	2016-10-28 10:10:49 +02:00
Nicolas Grekas	886fe1940b	Enhance GAE compat by removing some realpath()	2016-10-27 11:13:40 +02:00
Fabien Potencier	fb50892408	Merge branch '2.7' into 2.8 * 2.7: [FrameworkBundle] Fix Incorrect line break in exception message (500 debug page) Minor cleanups and improvements [form] lazy trans `post_max_size_message`. [DI] Fix setting synthetic services on ContainerBuilder [ClassLoader] Fix ClassCollectionLoader inlining with declare(strict_types=1)	2016-09-06 16:19:39 -07:00
Nicolas Grekas	8ec0c38b8d	[ClassLoader] Fix ClassCollectionLoader inlining with declare(strict_types=1)	2016-09-05 21:55:26 +02:00
Nicolas Grekas	2db1c31911	Merge branch '2.7' into 2.8 * 2.7: [ClassLoader] Fix tests [Debug][HttpKernel][VarDumper] Prepare for committed 7.2 changes [DependencyInjection] PhpDumper::isFrozen inconsistency [DI] Cleanup array_key_exists include dynamic services in list of alternatives [Debug] Swap dumper services at bootstrap	2016-08-23 15:37:31 +02:00
Nicolas Grekas	df77b1499c	[ClassLoader] Fix tests	2016-08-23 11:26:23 +02:00