From 6c47693b58307d1c08de028fa0bad0860a684f01 Mon Sep 17 00:00:00 2001
From: hsutter <herb.sutter@gmail.com>
Date: Tue, 29 Dec 2015 10:28:57 -0800
Subject: [PATCH] Applied suggestion in PR #268.

---
 CppCoreGuidelines.md | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 4013abc..aa45f81 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -5391,11 +5391,15 @@ not using this (over)general interface in favor of a particular interface found
 
 ##### Reason
 
-A class is more stable (less brittle) if it does not contain data. Interfaces should normally be composed entirely of public pure virtual functions.
+A class is more stable (less brittle) if it does not contain data. Interfaces should normally be composed entirely of public pure virtual functions and a default/empty virtual destructor.
 
 ##### Example
 
-    ???
+    class my_interface {
+    public:
+        // ...only pure virtual functions here ...
+        virtual my_interface() {}   // or =default
+    };
 
 ##### Enforcement