Hi,
while trying to compile the attached file MonadT.hs I got the following error:
ghc -fglasgow-exts -c -o MonadT.o MonadT.hs
ghc-5.02: panic! (the `impossible' happened, GHC version 5.02):
coreSyn/Subst.lhs:387: Non-exhaustive patterns in function zip_ty_env
Please report it as
A small program (which I haven't been able to strip down to a
minimal *failing* version ;) repeatedly opens sockets and does the
following (I tested with all permutations of hSetBuffering):
Socket.connectTo ...
hPutStrLn h "Data"
hPutStr h d
debug Io "Reading..:"
c <- hGetContents h
d
> HsParser does not allow method declarations to follow a default
> implementation of a method.
>
> class G a where
> f :: a -> a
> f x = x
> g :: a -> a
>
> Optional semicolons or empty statements are not permitted in
> do-expressions.
>
> f x = do ;; x ;
>
> T
> Using ghc-5.03, getArgs only returns the first command line argument.
>
> main = do putStrLn version
>args <- getArgs
>putStrLn (show args)
>...
I can't repeat this bug - it works for me with last night's sources both
in batch mode and in GHCi.
Cheers,
