Hi,
After attempting to build Haksell programm (through KDevelop),
i have got such a message:
....
Chasing modules from: hask1.hs
Compiling Main ( hask1.hs, hask1.o )
ghc-6.4: panic! (the `impossible' happened, GHC version 6.4):
ds_app_type Main.Tree{tc r16z} [a{tv a1a9}]
Please report it as a compiler bug to glasgow-haskell-bugs@haskell.org,
or http://sourceforge.net/projects/ghc/.
....
File hask.hs (with little comment) is attached.
Please wright back if you have accepted this signal or
if you are not interested in such a feedback.
Best regards, Paul.
module Main
where
import IO
import Random
import Monad
data TypeOfLexem = Variable | Number | Plus | Minus
data Lexem = Lexem {t::TypeOfLexem, branches::Int}
data Node a = Nil | Node a [Tree a]
{-
This line caused compiler panic.
Previously it was was:
data Tree a = Nil | Node a [Tree a]
-}
class Tree a where
(-) :: Tree a -> Tree a -> Tree a
(-) a1 a2 = Node Lexem{t=Minus,branches=2} (a1:a2:[])
{-
All the rest doesn,t make sense (i suppose)
-}
main = do
hSetBuffering stdin LineBuffering
num <- randomRIO (1::Int, 100)
putStrLn "I'm thinking of a number between 1 and 100"
doGuessing num
doGuessing num = do
putStrLn "Enter your guess:"
guess <- getLine
let guessNum = read guess
if guessNum < num
then do putStrLn "Too low!"
doGuessing num
else if read guess > num
then do putStrLn "Too high!"
doGuessing num
else do putStrLn "You Win!"_______________________________________________
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