From: Richard Kreckel <Richard.Kreckel@uni-mainz.de>
Date: Mon, 25 Jul 2005 01:05:33 +0000 (+0000)
Subject: Equip the visitor macro with a virtual dtor.
X-Git-Tag: release_1-4-0~158
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=commitdiff_plain;h=606c7c82026ad4323076fc89c5b2ecb2f0457536;p=ginac.git

Equip the visitor macro with a virtual dtor.
---

diff --git a/ginac/registrar.h b/ginac/registrar.h
index 333b5f07..16f39020 100644
--- a/ginac/registrar.h
+++ b/ginac/registrar.h
@@ -113,6 +113,7 @@ public: \
 	class visitor { \
 	public: \
 		virtual void visit(const classname &) = 0; \
+		virtual ~visitor() {}; \
 	};
 
 /** Macro for inclusion in the declaration of each registered class.