From 3107c2fbf22e7188b0aa857d8df5a1537df65a36 Mon Sep 17 00:00:00 2001
From: Peter LaFosse <peter@vector35.com>
Date: Tue, 14 Sep 2021 08:32:20 -0400
Subject: Fix NamedTypeReferenceType.target

---
 python/types.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'python')

diff --git a/python/types.py b/python/types.py
index b4977843..8e374d97 100644
--- a/python/types.py
+++ b/python/types.py
@@ -2314,7 +2314,7 @@ class NamedTypeReferenceType(Type):
 		if isinstance(t, NamedTypeReferenceType):
 			if t.type_id in type_ids:
 				raise TypeError("Can't get target for recursively defined type")
-			type_ids += t
+			type_ids.add(t)
 			return t._target_helper(bv, type_ids)
 		else:
 			return t
-- 
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