From 4a4e2a38d180ebb1dcb358048cce97f20807e6a9 Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Tue, 20 Aug 2024 14:39:25 +0200
Subject: [PATCH] delegate: refine function_pointer implementation - see #1167
 (same issue)

---
 TODO                         | 2 +-
 src/entt/signal/delegate.hpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/TODO b/TODO
index eefafb3c2..c1bbf282b 100644
--- a/TODO
+++ b/TODO
@@ -45,4 +45,4 @@ TODO:
 * suppress -Wself-move on CI with g++13
 * view and view iterator specializations for multi, single and filtered elements
 * organizer support to groups
-* see maybe bug here: https://discord.com/channels/707607951396962417/707624203456872480/1275012149865087006
\ No newline at end of file
+* see maybe bug here: https://discord.com/channels/707607951396962417/707624203456872480/1275012149865087006
diff --git a/src/entt/signal/delegate.hpp b/src/entt/signal/delegate.hpp
index 006064928..7143c9f8d 100644
--- a/src/entt/signal/delegate.hpp
+++ b/src/entt/signal/delegate.hpp
@@ -27,7 +27,7 @@ constexpr auto function_pointer(Ret (Class::*)(Args...), Other &&...) -> Ret (*)
 template<typename Class, typename Ret, typename... Args, typename... Other>
 constexpr auto function_pointer(Ret (Class::*)(Args...) const, Other &&...) -> Ret (*)(Args...);
 
-template<typename Class, typename Type, typename... Other>
+template<typename Class, typename Type, typename... Other, typename = std::enable_if_t<std::is_member_object_pointer_v<Type Class::*>>>
 constexpr auto function_pointer(Type Class::*, Other &&...) -> Type (*)();
 
 template<typename... Type>