[Haskell-cafe] HS-Plugins 1.0 chokes on simple test, WinXP GHC-6.6

Alistair Bayley alistair at abayley.org
Fri Mar 9 04:57:22 EST 2007

Does anyone have hs-plugins working on WinXP with ghc-6.6? When I run
the simple test below I get this error:

c:/ghc/ghc-6.6/HSbase.o: unknown symbol `_free'
Main: user error (Dynamic loader returned: user error (resolvedObjs failed.))

Am I doing something obviously dumb?


module Test1 where
test1 = putStrLn "test1"

module Main where
import Prelude hiding (catch)
import Control.Exception
import Data.List
import System.Environment
import System.Plugins

instance Show (LoadStatus a) where
  show (LoadFailure errors) = "LoadFailure - " ++ (concat (intersperse
"\n" errors))
  show (LoadSuccess m p) = "LoadSuccess"

main = do
  a <- getArgs
    modName = case a of
      (n:_) -> n
      _ -> "Test1"
  let modPath = "./" ++ modName ++ ".o"
  let method = "test1"
  fc <- catch (load modPath [""] [] method)
    (\e -> return (LoadFailure
      ["Dynamic loader returned: " ++ show e]))
  case fc of
    LoadFailure errors -> do
      fail (concat (intersperse "\n" errors))
    LoadSuccess modul proc -> do
      let p :: IO (); p = proc

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