From 62947773cedb0c9534c5df91271db9a9414e6e2a Mon Sep 17 00:00:00 2001
From: git <git@chrisd.info>
Date: Wed, 8 Apr 2015 04:04:55 +0000
Subject: Fix code that triggers a strange MSVC 'performance warning'

Github pull 74 from Chris Desjardins
---
 src/lib/mac/cmac/cmac.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/lib/mac/cmac')

diff --git a/src/lib/mac/cmac/cmac.cpp b/src/lib/mac/cmac/cmac.cpp
index e56aa145b..bb9d1c367 100644
--- a/src/lib/mac/cmac/cmac.cpp
+++ b/src/lib/mac/cmac/cmac.cpp
@@ -27,7 +27,7 @@ BOTAN_REGISTER_NAMED_T(MessageAuthenticationCode, "CMAC", CMAC, CMAC::make);
 */
 secure_vector<byte> CMAC::poly_double(const secure_vector<byte>& in)
    {
-   const bool top_carry = static_cast<bool>(in[0] & 0x80);
+   const bool top_carry = static_cast<bool>((in[0] & 0x80) != 0);
 
    secure_vector<byte> out = in;
 
-- 
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