From cca33ec9ef057b4e03928b68a69dea236a337562 Mon Sep 17 00:00:00 2001
From: romalytvynenko <litvinenko95@gmail.com>
Date: Mon, 16 Sep 2024 15:13:46 +0300
Subject: [PATCH] fixed mutating types (#546)

---
 src/Infer/Services/ReferenceTypeResolver.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Infer/Services/ReferenceTypeResolver.php b/src/Infer/Services/ReferenceTypeResolver.php
index 34d489e2..d2622933 100644
--- a/src/Infer/Services/ReferenceTypeResolver.php
+++ b/src/Infer/Services/ReferenceTypeResolver.php
@@ -119,7 +119,7 @@ public function resolve(Scope $scope, Type $type): Type
             onInfiniteRecursion: fn () => new UnknownType('really bad self reference'),
         );
 
-        return RecursionGuard::run(
+        return deep_copy(RecursionGuard::run(
             $resultingType,//->toString(),
             fn () => (new TypeWalker)->replace(
                 $resultingType,
@@ -128,7 +128,7 @@ public function resolve(Scope $scope, Type $type): Type
                     : null,
             ),
             onInfiniteRecursion: fn () => new UnknownType('really bad self reference'),
-        );
+        ));
     }
 
     private function checkDependencies(AbstractReferenceType $type)