Unfortunately it looks like VC 2008 has major issues with how

Algorithm::clone is redefinied with covariant return types in the
subclasses. Curiously, it only had problems with hash functions and
MACs, not ciphers.

So remove Algorithm::clone(), leaving the subclass implementations.

1 files changed, 3 insertions, 8 deletions

diff --git a/src/algo_base/algo_base.h b/src/algo_base/algo_base.h
index c27ea1809..813216a36 100644
--- a/src/algo_base/algo_base.h
+++ b/src/algo_base/algo_base.h
@@ -1,6 +1,6 @@
 /*
-* Symmetric Algorithm Base Class
-* (C) 1999-2007 Jack Lloyd
+* Algorithm Base Class
+* (C) 2010 Jack Lloyd
 *
 * Distributed under the terms of the Botan license
 */
@@ -14,18 +14,13 @@
 namespace Botan {
 
 /**
-* This class represents a symmetric algorithm object.
+* This class represents an algorithm of some kind
 */
 class BOTAN_DLL Algorithm
    {
    public:
 
       /**
-      * Make a new object representing the same algorithm as *this
-      */
-      virtual Algorithm* clone() const = 0;
-
-      /**
       * Zeroize internal state
       */
       virtual void clear() = 0;