newEmptyMVar  :: IO (MVar a)
newEmptyMVar = IO $ \ s# ->
    case newMVar# s# of
         (# s2#, svar# #) -> (# s2#, MVar svar# #)

-- |Create an 'MVar' which contains the supplied value.
newEmptyMVar  :: IO (MVar a)
newEmptyMVar = IO $ \ s# ->
    case newMVar# s# of
         (# s2#, svar# #) -> (# s2#, MVar svar# #)

-- |Create an 'MVar' which contains the supplied value.
newEmptyMVar = IO $ \ s# ->
    case newMVar# s# of
         (# s2#, svar# #) -> (# s2#, MVar svar# #)

-- |Create an 'MVar' which contains the supplied value.