From 61f010d703b32de9bfb20ab90ece38ab2f25977f Mon Sep 17 00:00:00 2001
From: Abseil Team <absl-team@google.com>
Date: Mon, 30 Mar 2020 14:26:22 -0400
Subject: [PATCH] Googletest export

Do not use std::result_of as it was removed in C++20.

PiperOrigin-RevId: 303783600
---
 googlemock/include/gmock/gmock-actions.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index b4127e93..615651b3 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -970,7 +970,8 @@ struct InvokeMethodWithoutArgsAction {
   Class* const obj_ptr;
   const MethodPtr method_ptr;
 
-  using ReturnType = typename std::result_of<MethodPtr(Class*)>::type;
+  using ReturnType =
+      decltype((std::declval<Class*>()->*std::declval<MethodPtr>())());
 
   template <typename... Args>
   ReturnType operator()(const Args&...) const {