From 37215facfcecb3a4133a740d7fda57c0ef564395 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Tue, 28 May 2024 03:44:47 +0200
Subject: w

---
 entity/concepts.hpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'entity')

diff --git a/entity/concepts.hpp b/entity/concepts.hpp
index 871f6bbe..5e01fcda 100644
--- a/entity/concepts.hpp
+++ b/entity/concepts.hpp
@@ -38,6 +38,7 @@ template<typename F, typename T, typename FieldType>
 concept FieldWriter_ptr = requires(T& x, move_qualified<FieldType> value, F f) {
     requires std::is_reference_v<decltype(x.*f)>;
     requires !std::is_const_v<std::remove_reference_t<decltype(x.*f)>>;
+    { x.*f } -> std::convertible_to<FieldType&>;
     { x.*f = value };
 };
 
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