From 174079a6e6ed5d4f164f642c12dfa75672b70c51 Mon Sep 17 00:00:00 2001
From: Topi Kettunen <topi@topikettunen.com>
Date: Thu, 14 Nov 2024 00:26:29 +0100
Subject: [PATCH] Fix memcpy/memset deprecation warning (#221)

* Fix memcpy/memset deprecation warning

* Formatting
---
 internal/Data/Attoparsec/ByteString/Buffer.hs  | 15 ++++++++-------
 internal/Data/Attoparsec/ByteString/FastSet.hs |  3 ++-
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/internal/Data/Attoparsec/ByteString/Buffer.hs b/internal/Data/Attoparsec/ByteString/Buffer.hs
index 4f827a8..7a72fdd 100644
--- a/internal/Data/Attoparsec/ByteString/Buffer.hs
+++ b/internal/Data/Attoparsec/ByteString/Buffer.hs
@@ -54,7 +54,7 @@ module Data.Attoparsec.ByteString.Buffer
     ) where
 
 import Control.Exception (assert)
-import Data.ByteString.Internal (ByteString(..), memcpy, nullForeignPtr)
+import Data.ByteString.Internal (ByteString(..), nullForeignPtr)
 import Data.Attoparsec.Internal.Fhthagn (inlinePerformIO)
 import Data.Attoparsec.Internal.Compat
 import Data.List (foldl1')
@@ -62,6 +62,7 @@ import Data.Monoid as Mon (Monoid(..))
 import Data.Semigroup (Semigroup(..))
 import Data.Word (Word8)
 import Foreign.ForeignPtr (ForeignPtr, withForeignPtr)
+import Foreign.Marshal.Utils (copyBytes)
 import Foreign.Ptr (castPtr, plusPtr)
 import Foreign.Storable (peek, peekByteOff, poke, sizeOf)
 import GHC.ForeignPtr (mallocPlainForeignPtrBytes)
@@ -118,9 +119,9 @@ append (Buf fp0 off0 len0 cap0 gen0) !fp1 !off1 !len1 =
         then do
           let newgen = gen + 1
           poke (castPtr ptr0) newgen
-          memcpy (ptr0 `plusPtr` (off0+len0))
-                 (ptr1 `plusPtr` off1)
-                 (fromIntegral len1)
+          copyBytes (ptr0 `plusPtr` (off0+len0))
+                    (ptr1 `plusPtr` off1)
+                    (fromIntegral len1)
           return (Buf fp0 off0 newlen cap0 newgen)
         else do
           let newcap = newlen * 2
@@ -129,9 +130,9 @@ append (Buf fp0 off0 len0 cap0 gen0) !fp1 !off1 !len1 =
             let ptr    = ptr_ `plusPtr` genSize
                 newgen = 1
             poke (castPtr ptr_) newgen
-            memcpy ptr (ptr0 `plusPtr` off0) (fromIntegral len0)
-            memcpy (ptr `plusPtr` len0) (ptr1 `plusPtr` off1)
-                   (fromIntegral len1)
+            copyBytes ptr (ptr0 `plusPtr` off0) (fromIntegral len0)
+            copyBytes (ptr `plusPtr` len0) (ptr1 `plusPtr` off1)
+                      (fromIntegral len1)
             return (Buf fp genSize newlen newcap newgen)
 
 length :: Buffer -> Int
diff --git a/internal/Data/Attoparsec/ByteString/FastSet.hs b/internal/Data/Attoparsec/ByteString/FastSet.hs
index 5d02553..b342d2d 100644
--- a/internal/Data/Attoparsec/ByteString/FastSet.hs
+++ b/internal/Data/Attoparsec/ByteString/FastSet.hs
@@ -33,6 +33,7 @@ module Data.Attoparsec.ByteString.FastSet
     ) where
 
 import Data.Bits ((.&.), (.|.), unsafeShiftL)
+import Foreign.Marshal.Utils (fillBytes)
 import Foreign.Storable (peekByteOff, pokeByteOff)
 import GHC.Exts (Int(I#), iShiftRA#)
 import GHC.Word (Word8)
@@ -94,7 +95,7 @@ memberChar c = memberWord8 (I.c2w c)
 
 mkTable :: B.ByteString -> B.ByteString
 mkTable s = I.unsafeCreate 32 $ \t -> do
-            _ <- I.memset t 0 32
+            fillBytes t 0 32
             U.unsafeUseAsCStringLen s $ \(p, l) ->
               let loop n | n == l = return ()
                          | otherwise = do