fix priority ordering of security voters

src/Symfony/Bundle/SecurityBundle/DependencyInjection/Compiler/AddSecurityVotersPass.php

@@ -31,15 +31,15 @@ class AddSecurityVotersPass implements CompilerPassInterface
             return;
         }
 
-        $voters = new \SplPriorityQueue();
+        $voters = array();
         foreach ($container->findTaggedServiceIds('security.voter') as $id => $attributes) {
             $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
-            $voters->insert(new Reference($id), $priority);
+            $voters[$priority][] = new Reference($id);
         }
 
-        $voters = iterator_to_array($voters);
-        ksort($voters);
+        krsort($voters);
+        $voters = call_user_func_array('array_merge', $voters);
 
-        $container->getDefinition('security.access.decision_manager')->replaceArgument(0, array_values($voters));
+        $container->getDefinition('security.access.decision_manager')->replaceArgument(0, $voters);
     }
 }

src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Compiler/AddSecurityVotersPassTest.php

@@ -0,0 +1,57 @@
+<?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\Bundle\SecurityBundle\Tests\DependencyInjection\Compiler;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Bundle\SecurityBundle\DependencyInjection\Compiler\AddSecurityVotersPass;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+
+class AddSecurityVotersPassTest extends TestCase
+{
+    public function testThatSecurityVotersAreProcessedInPriorityOrder()
+    {
+        $container = new ContainerBuilder();
+        $container
+            ->register('security.access.decision_manager', 'Symfony\Component\Security\Core\Authorization\AccessDecisionManager')
+            ->addArgument(array())
+        ;
+        $container
+            ->register('no_prio_service')
+            ->addTag('security.voter')
+        ;
+        $container
+            ->register('lowest_prio_service')
+            ->addTag('security.voter', array('priority' => 100))
+        ;
+        $container
+            ->register('highest_prio_service')
+            ->addTag('security.voter', array('priority' => 200))
+        ;
+        $container
+            ->register('zero_prio_service')
+            ->addTag('security.voter', array('priority' => 0))
+        ;
+        $compilerPass = new AddSecurityVotersPass();
+        $compilerPass->process($container);
+
+        $this->assertEquals(
+            array(
+                new Reference('highest_prio_service'),
+                new Reference('lowest_prio_service'),
+                new Reference('no_prio_service'),
+                new Reference('zero_prio_service'),
+            ),
+            $container->getDefinition('security.access.decision_manager')->getArgument(0)
+        );
+    }
+}