--- /dev/null
+<?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\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Remove private aliases from the container. They were only used to establish
+ * dependencies between services, and these dependencies have been resolved in
+ * one of the previous passes.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class RemovePrivateAliasesPass implements CompilerPassInterface
+{
+ /**
+ * Removes private aliases from the ContainerBuilder.
+ *
+ * @param ContainerBuilder $container
+ */
+ public function process(ContainerBuilder $container)
+ {
+ $compiler = $container->getCompiler();
+ $formatter = $compiler->getLoggingFormatter();
+
+ foreach ($container->getAliases() as $id => $alias) {
+ if ($alias->isPublic()) {
+ continue;
+ }
+
+ $container->removeAlias($id);
+ $compiler->addLogMessage($formatter->formatRemoveService($this, $id, 'private alias'));
+ }
+ }
+}