[Haskell-cafe] Problem with JHC

[Paolino]

FWIW, I just compiled JHC 0.7.2 with ghc 6.12 , doing a couple of
corrections to make it compile, which I don't think they are related to this
*bug*. Testing the given code, it aborts for every inputs I give it  "L 1",
" T AND [L 1,L 2]" included.
I couldn't make it compile using function "reads" instead.

paolino

2009/11/11 Ross Mellgren <rmm-haskell at z.odi.ac>

> According to the paste you gave for the JHC test run:
>
> Here is what happens when I try to run it:
>
> philip at desktop:~/jhctut$ ./jtree
> Give me a tree:
> T AND (L 1, L 2)
>
> jtree_code.c:2670: case fell off
> Aborted
>
> You gave it parens not square brackets.
>
> -Ross
>
> On Nov 11, 2009, at 11:45 AM, Philippos Apolinarius wrote:
>
> > you declared 'T Op [Tree]' so you should give 'T AND [L 1, L 2]'
> > as the tree, right?
> Hi, Felipe.
> You are right. This means that I gave the correct input to the program. As
> you can see, I typed 'T AND [L 1, L 2]'. Therefore, JHC was expected to
> parse and print it. However, it failed to parse it. The program works
> perfectly well in GHC. Here is the GHC output:
>
> > philip at desktop:~/jhctut$ ghc tree.hs --make
> [1 of 1] Compiling Main             ( tree.hs, tree.o )
> Linking tree ...
> > philip at desktop:~/jhctut$ ./tree
> Give me a tree:
> T AND [L 1, L 2]
> T AND [L 1,L 2]
>
> --- On *Wed, 11/11/09, Felipe Lessa <felipe.lessa at gmail.com>* wrote:
>
>
> From: Felipe Lessa <felipe.lessa at gmail.com>
> Subject: Re: [Haskell-cafe] Problem with JHC
> To: haskell-cafe at haskell.org
> Received: Wednesday, November 11, 2009, 6:23 AM
>
> On Wed, Nov 11, 2009 at 04:32:05AM -0800, Philippos Apolinarius wrote:
> > data Op = AND | OR | NOT deriving (Show, Read)
> > data Tree= L Int | T Op [Tree] deriving (Show, Read)
>
> Hmm, you see,
>
> > philip at desktop:~/jhctut$ ./jtree
> > Give me a tree:
> > T AND (L 1, L 2)
> >
> > jtree_code.c:2670: case fell off
> > Aborted
>
> you declared 'T Op [Tree]' so you should give 'T AND [L 1, L 2]'
> as the tree, right?
>
> --
> Felipe.
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