From 7c0db3203bc9ee910fb2e4746e58e1c6809686c6 Mon Sep 17 00:00:00 2001
From: Tom Yaxley <tommitytom@gmail.com>
Date: Fri, 20 Nov 2020 19:32:53 +1100
Subject: [PATCH] meta: allow checking meta_any for nullptr (#591)

---
 src/entt/meta/meta.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/entt/meta/meta.hpp b/src/entt/meta/meta.hpp
index 106a9c375..b3e0cb216 100644
--- a/src/entt/meta/meta.hpp
+++ b/src/entt/meta/meta.hpp
@@ -171,9 +171,11 @@ class meta_any {
             using pointed_type = std::remove_reference_t<decltype(*std::declval<Type>())>;
 
             if constexpr(std::is_const_v<pointed_type> && std::is_copy_constructible_v<pointed_type>) {
-                return std::as_const(*any.cast<Type>());
+                auto ptr = any.cast<Type>();
+                return ptr ? std::as_const(*ptr) : meta_any{};
             } else if constexpr(!std::is_const_v<pointed_type>) {
-                return std::ref(*any.cast<Type>());
+                auto ptr = any.cast<Type>();
+                return ptr ? std::ref(*ptr) : meta_any{};
             } else {
                 return {};
             }