On 23-Oct-2000, José Romildo Malaquias <[EMAIL PROTECTED]> wrote:
> ------------------------- cut here
> module Main where
>
> class C a where
> f :: (?env :: Integer) => a -> Integer
>
> instance C Integer where
> f x = ?env + x
>
> main = putStrLn (show (f (45::Integer) with ?env = 100))
> ------------------------- cut here
...
> $ ghc -fglasgow-exts Test1.hs -o test1
>
> Test1.hs:7:
> Unbound implicit parameter `env_rJX :: Integer'
> arising from use of `env_rJX' at Test1.hs:7
...
> Would anybody comment on what is going on with GHC?
That sure looks to me like a bug in GHC's support for implicit
parameter passing.
--
Fergus Henderson <[EMAIL PROTECTED]> | "I have always known that the pursuit
| of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh> | -- the last words of T. S. Garp.
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