ghci-5.00: the `impossible' happened

[Manuel M. T. Chakravarty]

Armin Groesslinger <groessli at fmi.uni-passau.de> wrote,

> -----------------------
> module Main where
> 
> import CForeign
> 
> foreign import "puts" puts :: CString -> IO ()
> 
> main :: IO ()
> main = return ()
> -----------------------
> 
> to ghci-5.00 (with ghci -package lang -fglasgow-exts Main.hs
> on x86/Linux) gives the following error:
> 
> Compiling Main             ( Main.hs, interpreted )
> ghc-5.00: panic! (the `impossible' happened, GHC version 5.00):
> 	  bytecode generator can't handle unboxed tuples

The interpreter does not support foreign declarations yet.
You can only use them with the batch compiler.

Manuel