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Use correct signatures for 'memset' and 'memcpy' #9

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Merged
jappeace merged 1 commit into from
Jul 28, 2026
Merged

Use correct signatures for 'memset' and 'memcpy' #9

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6 changes: 3 additions & 3 deletions Data/Memory/PtrMethods.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ memXorWith destination !v source bytes

-- | Copy a set number of bytes from @src to @dst
memCopy :: Ptr Word8 -> Ptr Word8 -> Int -> IO ()
memCopy dst src n = c_memcpy dst src (fromIntegral n)
memCopy dst src n = c_memcpy dst src (fromIntegral n) >>= \_ -> return ()
{-# INLINE memCopy #-}

-- | Set @n number of bytes to the same value @v
Expand Down Expand Up @@ -114,7 +114,7 @@ memConstEqual p1 p2 n = loop 0 0
loop (i+1) (acc .|. e)

foreign import ccall unsafe "memset"
c_memset :: Ptr Word8 -> Word8 -> CSize -> IO ()
c_memset :: Ptr Word8 -> Word8 -> CSize -> IO (Ptr Word8)

foreign import ccall unsafe "memcpy"
c_memcpy :: Ptr Word8 -> Ptr Word8 -> CSize -> IO ()
c_memcpy :: Ptr Word8 -> Ptr Word8 -> CSize -> IO (Ptr Word8)
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