From 7c84ce666efc2d78ee075f44ff7a8b4f01b83cfa Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Wed, 26 Oct 2022 12:37:46 +0200
Subject: [PATCH] sigh: rollback some changes that apparently create issues
 with (very old) compilers (ie clang 6)

---
 src/entt/signal/sigh.hpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/entt/signal/sigh.hpp b/src/entt/signal/sigh.hpp
index fa3fccf21..5e853540b 100644
--- a/src/entt/signal/sigh.hpp
+++ b/src/entt/signal/sigh.hpp
@@ -360,9 +360,14 @@ class sink<sigh<Ret(Args...), Allocator>> {
     using signal_type = sigh<Ret(Args...), Allocator>;
     using difference_type = typename signal_type::container_type::difference_type;
 
-    template<auto Candidate, typename... Type>
-    static void release(Type... value_or_instance, void *signal) {
-        sink{*static_cast<signal_type *>(signal)}.disconnect<Candidate>(value_or_instance...);
+    template<auto Candidate, typename Type>
+    static void release(Type value_or_instance, void *signal) {
+        sink{*static_cast<signal_type *>(signal)}.disconnect<Candidate>(value_or_instance);
+    }
+
+    template<auto Candidate>
+    static void release(void *signal) {
+        sink{*static_cast<signal_type *>(signal)}.disconnect<Candidate>();
     }
 
     auto before(delegate<Ret(Args...)> call) {