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fix old build

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This commit is contained in:
Vincent Hanquez 2015-04-05 11:17:52 +01:00
parent e74448aeb4
commit ed4da5734b
1 changed files with 2 additions and 0 deletions
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Crypto/Internal/Compat.hs
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@ -15,7 +15,9 @@ module Crypto.Internal.Compat
) where ) where
import System.IO.Unsafe import System.IO.Unsafe
#if MIN_VERSION_base(4,5,0)
import Data.Bits (popCount) import Data.Bits (popCount)
#endif
-- | perform io for hashes that do allocation and ffi. -- | perform io for hashes that do allocation and ffi.
-- unsafeDupablePerformIO is used when possible as the -- unsafeDupablePerformIO is used when possible as the