runghc -fdefer-type-errors

Hello, Doesn't runghc support the -fdefer-type-errors option? Consider this code: ---- module Main where main :: IO () main = do -- putStrLn は文字列を取る putStrLn "Hello, world!" putStrLn 1 -- 型エラー ---- If I use runghc with -fdefer-type-errors, "Hello, world!" is not printed. Is this a bug? If this behavior is intended, I would like to change it. If GHC can run code like dynamically typed languages, it would be appealing to new Haskell programmers from their community. --Kazu