From ec0fad0d75d7c0a8fc6b0f9bf26e06ae68cf5afc Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Wed, 20 Jun 2018 16:26:54 +0200
Subject: [PATCH] WIP: Fixed a test issue with the PCellDeclarationHelper
 external class.

---
 src/lym/lym/lymMacro.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/lym/lym/lymMacro.cc b/src/lym/lym/lymMacro.cc
index 91373d24c..02d370f7c 100644
--- a/src/lym/lym/lymMacro.cc
+++ b/src/lym/lym/lymMacro.cc
@@ -844,6 +844,13 @@ public:
     return true;
   }
 
+  virtual bool can_upcast (const void *) const
+  {
+    //  It does not make sense to upcast-check vs. an external class
+    //  An external class is only provided as a stub.
+    return false;
+  }
+
 private:
   std::string m_category;
 };