From 27d9385d4db3d29c5ca4900701da4a1a741f6d64 Mon Sep 17 00:00:00 2001
From: Gordon Franke <info@nevalon.de>
Date: Wed, 16 Jan 2013 09:01:02 +0100
Subject: [PATCH] wrap the exception to get information about where the
 exception comes from

---
 .../Compiler/ReplaceAliasByActualDefinitionPass.php      | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
index 1964184955..972d708c59 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ReplaceAliasByActualDefinitionPass.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\DependencyInjection\Compiler;
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\Reference;
 
 /**
@@ -30,6 +31,8 @@ class ReplaceAliasByActualDefinitionPass implements CompilerPassInterface
      * Process the Container to replace aliases with service definitions.
      *
      * @param ContainerBuilder $container
+     *
+     * @throws InvalidArgumentException if the service definition does not exist
      */
     public function process(ContainerBuilder $container)
     {
@@ -39,7 +42,11 @@ class ReplaceAliasByActualDefinitionPass implements CompilerPassInterface
         foreach ($container->getAliases() as $id => $alias) {
             $aliasId = (string) $alias;
 
-            $definition = $container->getDefinition($aliasId);
+            try {
+                $definition = $container->getDefinition($aliasId);
+            } catch (InvalidArgumentException $e) {
+                throw new InvalidArgumentException(sprintf('Unable to replace alias "%s" with "%s".', $alias, $id), null, $e);
+            }
 
             if ($definition->isPublic()) {
                 continue;