From f6153f17ad66032ddb9631028408be81c5c50165 Mon Sep 17 00:00:00 2001
From: Michele Caini <michele.caini@gmail.com>
Date: Wed, 9 Mar 2022 10:41:17 +0100
Subject: [PATCH] storage: return a meaningful msg when the type is not movable

---
 src/entt/entity/storage.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/entt/entity/storage.hpp b/src/entt/entity/storage.hpp
index 1923d9a8d..238a41a20 100644
--- a/src/entt/entity/storage.hpp
+++ b/src/entt/entity/storage.hpp
@@ -232,6 +232,8 @@ template<typename... CLhs, typename... CRhs>
  */
 template<typename Entity, typename Type, typename Allocator, typename>
 class basic_storage: public basic_sparse_set<Entity, typename std::allocator_traits<Allocator>::template rebind_alloc<Entity>> {
+    static_assert(std::is_move_constructible_v<Type> && std::is_move_assignable_v<Type>, "The type must be at least move constructible/assignable");
+
     using alloc_traits = std::allocator_traits<Allocator>;
     static_assert(std::is_same_v<typename alloc_traits::value_type, Type>);
     using underlying_type = basic_sparse_set<Entity, typename alloc_traits::template rebind_alloc<Entity>>;