From 9e900ac21ff6a775f763e30fe904541742deb290 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Tue, 29 Mar 2022 18:09:28 +0200
Subject: [PATCH] LuaWrapper: Prevent referencing a temporary object

Reported by Coverity (CIDs 120403 and 145915)
---
 ext/luawrapper/include/LuaContext.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ext/luawrapper/include/LuaContext.hpp b/ext/luawrapper/include/LuaContext.hpp
index e3a87ee9b7..9f8d473fb7 100644
--- a/ext/luawrapper/include/LuaContext.hpp
+++ b/ext/luawrapper/include/LuaContext.hpp
@@ -1770,7 +1770,8 @@ private:
         -> typename std::enable_if<IsOptional<TFirstType>::value, TRetValue>::type
     {
         if (index >= 0) {
-            Binder<TCallback, const TFirstType&> binder{ callback, {} };
+            static const TFirstType empty{};
+            Binder<TCallback, const TFirstType&> binder{ callback, empty };
             return readIntoFunction(state, retValueTag, binder, index + 1, othersTags...);
         }
 
-- 
2.47.2