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Deprecate storableToF #649

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Jan 30, 2024
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Deprecate storableToF #649

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3 changes: 3 additions & 0 deletions Data/ByteString/Builder/Prim/Internal.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -199,6 +199,9 @@ liftFixedToBounded :: FixedPrim a -> BoundedPrim a
liftFixedToBounded = toB

{-# INLINE CONLIKE storableToF #-}
{-# DEPRECATED storableToF
"Deprecated since @bytestring-0.12.1.0@.\n\nThis function is dangerous in the presence of internal padding\nand makes naive assumptions about alignment.\n\n * For a primitive Haskell type like 'Int64', use the\n corresponding primitive like 'Data.ByteString.Builder.Prim.int64Host'.\n * For other types, it is recommended to manually write a small\n function that performs the necessary unaligned write\n and zeroes or removes any internal padding bits."
#-}
storableToF :: forall a. Storable a => FixedPrim a
#if HS_UNALIGNED_POKES_OK
storableToF = FP (sizeOf (undefined :: a)) (\x op -> poke (castPtr op) x)
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