From ebbb3d44cf0095e3e6de91d021ac248c56a8312c Mon Sep 17 00:00:00 2001
From: Tomas Stupka <tomas.stupka@oracle.com>
Date: Wed, 4 Oct 2017 20:16:21 +0200
Subject: [PATCH] return valid interop type

---
 .../oracle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/com.oracle.truffle.r.ffi.impl/src/com/oracle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java b/com.oracle.truffle.r.ffi.impl/src/com/oracle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java
index 8ab5b1bf94..1ce91a921d 100644
--- a/com.oracle.truffle.r.ffi.impl/src/com/oracle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java
+++ b/com.oracle.truffle.r.ffi.impl/src/com/oracle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java
@@ -130,7 +130,7 @@ public final class AttributesAccessNodes {
                 copyRegAttributes = CopyOfRegAttributesNode.create();
             }
             copyRegAttributes.execute(x, y);
-            return null;
+            return RNull.instance;
         }
 
         @Fallback
-- 
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