From 370a2ae2b364cc91792ecf2a343b14fca5d488ad Mon Sep 17 00:00:00 2001
From: Robert Haschke <rhaschke@users.noreply.github.com>
Date: Sun, 5 Jan 2020 15:49:24 +0100
Subject: [PATCH] Declare call_impl() as && (#2057)

---
 include/pybind11/cast.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/pybind11/cast.h b/include/pybind11/cast.h
index 38eb8a88f..a0b4d1ba9 100644
--- a/include/pybind11/cast.h
+++ b/include/pybind11/cast.h
@@ -1978,7 +1978,7 @@ private:
     }
 
     template <typename Return, typename Func, size_t... Is, typename Guard>
-    Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) {
+    Return call_impl(Func &&f, index_sequence<Is...>, Guard &&) && {
         return std::forward<Func>(f)(cast_op<Args>(std::move(std::get<Is>(argcasters)))...);
     }