[VarExporter] Fix possible memory-leak when using lazy-objects

Author: nicolas-grekas

Caster/SymfonyCaster.php

@@ -15,6 +15,7 @@
 use Symfony\Component\Uid\Ulid;
 use Symfony\Component\Uid\Uuid;
 use Symfony\Component\VarDumper\Cloner\Stub;
+use Symfony\Component\VarExporter\Internal\LazyObjectState;
 
 /**
  * @final
@@ -67,6 +68,22 @@ public static function castHttpClientResponse($response, array $a, Stub $stub, b
         return $a;
     }
 
+    public static function castLazyObjectState($state, array $a, Stub $stub, bool $isNested)
+    {
+        if (!$isNested) {
+            return $a;
+        }
+
+        $stub->cut += \count($a) - 1;
+
+        return ['status' => new ConstStub(match ($a['status']) {
+            LazyObjectState::STATUS_INITIALIZED_FULL => 'INITIALIZED_FULL',
+            LazyObjectState::STATUS_INITIALIZED_PARTIAL => 'INITIALIZED_PARTIAL',
+            LazyObjectState::STATUS_UNINITIALIZED_FULL => 'UNINITIALIZED_FULL',
+            LazyObjectState::STATUS_UNINITIALIZED_PARTIAL => 'UNINITIALIZED_PARTIAL',
+        }, $a['status'])];
+    }
+
     public static function castUuid(Uuid $uuid, array $a, Stub $stub, bool $isNested)
     {
         $a[Caster::PREFIX_VIRTUAL.'toBase58'] = $uuid->toBase58();

Cloner/AbstractCloner.php

@@ -89,6 +89,7 @@ abstract class AbstractCloner implements ClonerInterface
         'Symfony\Component\HttpFoundation\Request' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castRequest'],
         'Symfony\Component\Uid\Ulid' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castUlid'],
         'Symfony\Component\Uid\Uuid' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castUuid'],
+        'Symfony\Component\VarExporter\Internal\LazyObjectState' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castLazyObjectState'],
         'Symfony\Component\VarDumper\Exception\ThrowingCasterException' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castThrowingCasterException'],
         'Symfony\Component\VarDumper\Caster\TraceStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castTraceStub'],
         'Symfony\Component\VarDumper\Caster\FrameStub' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castFrameStub'],