From 6a299dfe4109fb2f0d2db0f50b31138f764af9f1 Mon Sep 17 00:00:00 2001
From: Twan van Laarhoven <twanvl@gmail.com>
Date: Wed, 20 May 2020 13:10:39 +0200
Subject: [PATCH] Fix #48

---
 src/data/set.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/data/set.cpp b/src/data/set.cpp
index dc8bfbf8..b1ae3da8 100644
--- a/src/data/set.cpp
+++ b/src/data/set.cpp
@@ -175,6 +175,7 @@ void reflect_version_check(Reader& handler, const Char* key, intrusive_ptr<Packa
   }
 }
 void reflect_version_check(Writer& handler, const Char* key, intrusive_ptr<Packaged> const& package) {
+  if (!package) return;
   handler.handle(key, package->version);
 }
 void reflect_version_check(GetMember& handler, const Char* key, intrusive_ptr<Packaged> const& package) {}