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-- This should throw a warning
:set -XStaticPointers
:set -XScopedTypeVariables
:load StaticPtr.hs
import GHC.StaticPtr
import Prelude
:{
let checkKey :: forall a. (Show a, Eq a) => StaticPtr a -> IO ()
checkKey x = do
allKeys <- staticPtrKeys
Just x' <- unsafeLookupStaticPtr (staticKey x) :: IO (Maybe (StaticPtr a))
putStrLn $
show (deRefStaticPtr x)
++ " " ++
(if deRefStaticPtr x == deRefStaticPtr x'
then "good"
else "bad")
:}
checkKey s1
checkKey s2
-- :m + StaticPtr
--checkKey topLevelStatic
--checkKey (fst nestedStatic)
|
