From 3e9cf81865e6337cd8c646b37c2cab9fb22ed8b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kirill=20M=C3=BCller?= <krlmlr+r@mailbox.org>
Date: Fri, 15 Sep 2017 17:24:05 +0200
Subject: [PATCH] resolve UB by using copy instead of reference

---
 inst/include/dplyr/Result/VectorSliceVisitor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/inst/include/dplyr/Result/VectorSliceVisitor.h b/inst/include/dplyr/Result/VectorSliceVisitor.h
index 74e7643aa7..1ca62c0050 100644
--- a/inst/include/dplyr/Result/VectorSliceVisitor.h
+++ b/inst/include/dplyr/Result/VectorSliceVisitor.h
@@ -29,7 +29,7 @@ class VectorSliceVisitor {
   }
 
 private:
-  const Vector<RTYPE>& data;
+  Vector<RTYPE> data;
   int n;
   const SlicingIndex& index;
 };