From 9914732004c9e6bdb8a0785f77f4bed369b706b0 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 19 Oct 2022 16:06:47 +0200
Subject: [PATCH] Potential fix for C++20 std::set::* ambiguity

(until C++20) bool empty() const noexcept;
(since C++20) [[nodiscard]] bool empty() const noexcept;
---
 libs/lua/LuaBridge/detail/Namespace.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libs/lua/LuaBridge/detail/Namespace.h b/libs/lua/LuaBridge/detail/Namespace.h
index c39a7f0e3e..0d6604bb9c 100644
--- a/libs/lua/LuaBridge/detail/Namespace.h
+++ b/libs/lua/LuaBridge/detail/Namespace.h
@@ -1899,11 +1899,12 @@ public:
   Class<std::set<T> > beginStdSet (char const* name)
   {
     typedef std::set<T> LT;
+    typedef typename LT::size_type T_SIZE;
     return beginClass<LT> (name)
       .addVoidConstructor ()
       .addFunction ("clear", (void (LT::*)())&LT::clear)
-      .addFunction ("empty", &LT::empty)
-      .addFunction ("size", &LT::size)
+      .addFunction ("empty", (bool (LT::*)()const)&LT::empty)
+      .addFunction ("size", (T_SIZE (LT::*)()const)&LT::size)
 #if 0 // needs work for AutomationTypeSet (T is-a enum not a class instance)
       .addExtCFunction ("insert", &CFunc::setInsert<T, LT>)
 #endif