From f9fbc056e30e8d26eab0967fc4f76846143bb7ee Mon Sep 17 00:00:00 2001
From: Luca Niccoli <luce.niccoli@castlabs.com>
Date: Wed, 4 Mar 2026 12:55:40 +0100
Subject: [PATCH] Help GCC 4.8 distinguish between Functions and Executors

---
 include/asio/detail/work_dispatcher.hpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/asio/detail/work_dispatcher.hpp b/include/asio/detail/work_dispatcher.hpp
index 4e1baa068d..9e7a33e0a1 100644
--- a/include/asio/detail/work_dispatcher.hpp
+++ b/include/asio/detail/work_dispatcher.hpp
@@ -40,8 +40,13 @@ struct empty_work_function
   }
 };
 
-template <typename Function>
+template <typename Function, typename = void>
 struct work_result
+{
+};
+
+template <typename Function>
+struct work_result<Function, void_t<result_of_t<decay_t<Function>()>>>
 {
   typedef decay_t<result_of_t<decay_t<Function>()>> type;
 };