On 06 June 2005 09:04, Gary Morris wrote:
--- begin: AccuTime.hs
module AccuTime where
import Foreign.C.Types
foreign import stdcall unsafe "accutime.h accuticks" c_accuticks :: IO CULLong
accuticks :: IO Integer accuticks = do ull <- c_accuticks return (fromIntegral ull)
--- end
And then, after passing the correct -L and -l flags to ghci, attempted to load that module. Unfortunately, I got:
___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.4, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help.
Loading package base-1.0 ... linking ... done. Loading object (dynamic) AccuTime ... done final link ... done Prelude> :l AccuTime.hs Compiling AccuTime ( AccuTime.hs, interpreted ) ghc.exe: panic! (the `impossible' happened, GHC version 6.4): ByteCodeFFI.mkMarshalCode_wrk(x86) L_
Please report it as a compiler bug to glasgow-haskell-bugs@haskell.org, or http://sourceforge.net/projects/ghc/.
Yes, unfortunately it seems that long-long results from foreign functions aren't supported by GHCi (on x86) right now. Workaround is to compile the module instead of interpreting it. Cheers, Simon