diff --git a/src/Symfony/Component/VarDumper/Caster/ResourceCaster.php b/src/Symfony/Component/VarDumper/Caster/ResourceCaster.php
index 903641f69c636..d70c09ac4da62 100644
--- a/src/Symfony/Component/VarDumper/Caster/ResourceCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/ResourceCaster.php
@@ -45,7 +45,7 @@ public static function castStream($stream, array $a, Stub $stub, $isNested)
 
     public static function castStreamContext($stream, array $a, Stub $stub, $isNested)
     {
-        return stream_context_get_params($stream);
+        return @stream_context_get_params($stream) ?: $a;
     }
 
     public static function castGd($gd, array $a, Stub $stub, $isNested)
diff --git a/src/Symfony/Component/VarDumper/Caster/SplCaster.php b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
index b0b57e3cda598..d50419f624394 100644
--- a/src/Symfony/Component/VarDumper/Caster/SplCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/SplCaster.php
@@ -86,7 +86,7 @@ public static function castObjectStorage(\SplObjectStorage $c, array $a, Stub $s
         $storage = array();
         unset($a[Caster::PREFIX_DYNAMIC."\0gcdata"]); // Don't hit https://bugs.php.net/65967
 
-        foreach ($c as $obj) {
+        foreach (clone $c as $obj) {
             $storage[spl_object_hash($obj)] = array(
                 'object' => $obj,
                 'info' => $c->getInfo(),