From b0696dd8fe87803575aaa7ed02cd207f700b2997 Mon Sep 17 00:00:00 2001
From: Tommaso Pecorella <tommaso.pecorella@unifi.it>
Date: Tue, 12 Mar 2024 23:02:10 +0100
Subject: [PATCH] core: (fixes #1049) add error message to
 ObjectFactory::Create

---
 src/core/model/object-factory.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/core/model/object-factory.h b/src/core/model/object-factory.h
index 272f6ee06..109e1af8b 100644
--- a/src/core/model/object-factory.h
+++ b/src/core/model/object-factory.h
@@ -205,7 +205,11 @@ Ptr<T>
 ObjectFactory::Create() const
 {
     Ptr<Object> object = Create();
-    return object->GetObject<T>();
+    auto obj = object->GetObject<T>();
+    NS_ASSERT_MSG(obj != nullptr,
+                  "ObjectFactory::Create error: incompatible types ("
+                      << T::GetTypeId().GetName() << " and " << object->GetInstanceTypeId() << ")");
+    return obj;
 }
 
 template <typename... Args>