add CRYPTOPP_NO_VTABLE

1 files changed, 1 insertions, 1 deletions

diff --git a/idea.h b/idea.h
index 0f9bbce0..09624caa 100644
--- a/idea.h
+++ b/idea.h
@@ -17,7 +17,7 @@ struct IDEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public F
 /// <a href="http://www.weidai.com/scan-mirror/cs.html#IDEA">IDEA</a>
 class IDEA : public IDEA_Info, public BlockCipherDocumentation
 {
-	class Base : public BlockCipherBaseTemplate<IDEA_Info>
+	class CRYPTOPP_NO_VTABLE Base : public BlockCipherBaseTemplate<IDEA_Info>
 	{
 	public:
 		unsigned int GetAlignment() const {return 2;}