From 7e82d498da8a9da71f02a9d110c33c419cdc9b10 Mon Sep 17 00:00:00 2001
From: Jack Lloyd <jack@randombit.net>
Date: Sat, 17 Mar 2018 12:28:32 -0400
Subject: Fix CPUID::has_cpuid_bit

It would return true if any bits were set instead of if all the bits
were set. It is only currently called with a single bit but that might
change in the future.
---
 src/lib/utils/cpuid/cpuid.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/lib')

diff --git a/src/lib/utils/cpuid/cpuid.h b/src/lib/utils/cpuid/cpuid.h
index f37063a99..4c0f1668b 100644
--- a/src/lib/utils/cpuid/cpuid.h
+++ b/src/lib/utils/cpuid/cpuid.h
@@ -278,7 +278,9 @@ class BOTAN_PUBLIC_API(2,1) CPUID final
          {
          if(g_processor_features == 0)
             initialize();
-         return ((g_processor_features & static_cast<uint64_t>(elem)) != 0);
+
+         const uint64_t elem64 = static_cast<uint64_t>(elem);
+         return ((g_processor_features & elem64) == elem64);
          }
 
       static std::vector<CPUID::CPUID_bits> bit_from_string(const std::string& tok);
-- 
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