From 09a0c23668fc5379b63fd3bf995b2cc6dd9c99b3 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 6 Nov 2018 14:23:19 +0100
Subject: [PATCH] [DI] dont track classes/interfaces used to compute autowiring
 error messages

---
 .../DependencyInjection/Compiler/AutowirePass.php   | 13 +++++++++++--
 .../DependencyInjection/ContainerBuilder.php        |  2 +-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
index e542e30ea6f5..4aabb0b29aa7 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
@@ -452,7 +452,17 @@ private function createAutowiredDefinition($type)
 
     private function createTypeNotFoundMessage(TypedReference $reference, $label)
     {
-        if (!$r = $this->container->getReflectionClass($type = $reference->getType(), false)) {
+        $trackResources = $this->container->isTrackingResources();
+        $this->container->setResourceTracking(false);
+        try {
+            if ($r = $this->container->getReflectionClass($type = $reference->getType(), false)) {
+                $alternatives = $this->createTypeAlternatives($reference);
+            }
+        } finally {
+            $this->container->setResourceTracking($trackResources);
+        }
+
+        if (!$r) {
             // either $type does not exist or a parent class does not exist
             try {
                 $resource = new ClassExistenceResource($type, false);
@@ -465,7 +475,6 @@ private function createTypeNotFoundMessage(TypedReference $reference, $label)
 
             $message = sprintf('has type "%s" but this class %s.', $type, $parentMsg ? sprintf('is missing a parent class (%s)', $parentMsg) : 'was not found');
         } else {
-            $alternatives = $this->createTypeAlternatives($reference);
             $message = $this->container->has($type) ? 'this service is abstract' : 'no such service exists';
             $message = sprintf('references %s "%s" but %s.%s', $r->isInterface() ? 'interface' : 'class', $type, $message, $alternatives);
 
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 55d2c0112c57..de2abd3d04ef 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -364,7 +364,7 @@ public function getReflectionClass($class, $throw = true)
         try {
             if (isset($this->classReflectors[$class])) {
                 $classReflector = $this->classReflectors[$class];
-            } elseif ($this->trackResources) {
+            } elseif (class_exists(ClassExistenceResource::class)) {
                 $resource = new ClassExistenceResource($class, false);
                 $classReflector = $resource->isFresh(0) ? false : new \ReflectionClass($class);
             } else {