Fix infinite loop

src/Definition/Definition.php

@@ -12,6 +12,7 @@
 };
 use League\Container\ContainerAwareTrait;
 use League\Container\Exception\ContainerException;
+use League\Container\Exception\NotFoundException;
 use Psr\Container\ContainerInterface;
 use ReflectionClass;
 
@@ -20,6 +21,8 @@ class Definition implements ArgumentResolverInterface, DefinitionInterface
     use ArgumentResolverTrait;
     use ContainerAwareTrait;
 
+    private const RECURSIVE_RESOLVE_MAX = 10;
+
     /**
      * @var string
      */
@@ -55,6 +58,11 @@ class Definition implements ArgumentResolverInterface, DefinitionInterface
      */
     protected $resolved;
 
+    /**
+     * @var int
+     */
+    protected $recursiveResolveCount = 0;
+
     /**
      * @param string     $id
      * @param mixed|null $concrete
@@ -188,6 +196,12 @@ public function resolveNew()
         // if we still have a string, try to pull it from the container
         // this allows for `alias -> alias -> ... -> concrete
         if (is_string($concrete) && $container instanceof ContainerInterface && $container->has($concrete)) {
+            if ($this->recursiveResolveCount++ > self::RECURSIVE_RESOLVE_MAX) {
+                throw new NotFoundException(
+                    sprintf('Alias "%s" did not found or alias too deep.', $concrete)
+                );
+            }
+
             $concrete = $container->get($concrete);
         }
 

tests/ContainerTest.php

@@ -230,6 +230,6 @@ public function testNonExistentClassCausesException(): void
         self::assertTrue($container->has(NonExistent::class));
 
         $this->expectException(NotFoundException::class);
-        $container->get(NonExistent::class); // causes Fatal error: Allowed memory size of 134217728 bytes exhausted
+        $container->get(NonExistent::class);
     }
 }