From c42414db86d393aaea8b450d987f0f56c2c66bca Mon Sep 17 00:00:00 2001
From: Aaron Gokaslan <skylion.aaron@gmail.com>
Date: Mon, 23 May 2022 12:26:53 -0400
Subject: [PATCH] (perf): use a rvalue cast in func_wrapper (#3966)

* (perf): use an rvalue cast in func_wrapper

* Try to clarify comment

* Fix comment typo
---
 include/pybind11/functional.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/pybind11/functional.h b/include/pybind11/functional.h
index 23e092e73..f2a752e9d 100644
--- a/include/pybind11/functional.h
+++ b/include/pybind11/functional.h
@@ -98,8 +98,8 @@ public:
             explicit func_wrapper(func_handle &&hf) noexcept : hfunc(std::move(hf)) {}
             Return operator()(Args... args) const {
                 gil_scoped_acquire acq;
-                object retval(hfunc.f(std::forward<Args>(args)...));
-                return retval.template cast<Return>();
+                // casts the returned object as a rvalue to the return type
+                return object(hfunc.f(std::forward<Args>(args)...)).template cast<Return>();
             }
         };