From 30f71b2ed6bd3bf8e1991999b175e0c1b22f6c73 Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Wed, 15 May 2019 23:07:24 +0200
Subject: [PATCH] assert (has) on replace for empty components

---
 src/entt/entity/registry.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/entt/entity/registry.hpp b/src/entt/entity/registry.hpp
index f19f7dcc0..bcc9775b5 100644
--- a/src/entt/entity/registry.hpp
+++ b/src/entt/entity/registry.hpp
@@ -121,6 +121,7 @@ class basic_registry {
         template<typename... Args>
         decltype(auto) replace(basic_registry &registry, const Entity entt, Args &&... args) {
             if constexpr(std::is_empty_v<Component>) {
+                assert((storage<Entity, Component>::has(entt)));
                 on_replace.publish(registry, entt, Component{});
                 return Component{std::forward<Args>(args)...};
             } else {