Hi, Ross.
Ops, the paste is wrong, but the bug is real. I mean, if I try to run
the program with the right input, the program aborts in the same place,
with the same error message:
philip@desktop:~/jhctut$ ./jtestarbo
Give me a tree:
T AND [L 1, L 2]
jtestarbo_code.c:2670: case fell off
Abortado
In fact, it aborts in the same place for any input. This fact may help to discover where the trouble is:
philip@desktop:~/jhctut$ ./jtestarbo Give me a tree: fdsfkldkl
jtestarbo_code.c:2670: case fell off Abortado
--- On Wed, 11/11/09, Ross Mellgren <rmm-haskell@z.odi.ac> wrote:
From: Ross Mellgren <rmm-haskell@z.odi.ac> Subject: Re: [Haskell-cafe] Problem with JHC To: "Philippos Apolinarius" <phi500ac@yahoo.ca> Cc: "Felipe Lessa" <felipe.lessa@gmail.com>, haskell-cafe@haskell.org Received: Wednesday, November 11, 2009, 9:52 AM
According to the paste you gave for the JHC test run:
Here is what happens when I try to run it: philip@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@desktop:~/jhctut$ ghc tree.hs --make [1 of 1] Compiling Main ( tree.hs, tree.o ) Linking tree ... > philip@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@gmail.com> wrote:
From: Felipe Lessa <felipe.lessa@gmail.com> Subject: Re: [Haskell-cafe] Problem with JHC To: haskell-cafe@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@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. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.orghttp://www.haskell.org/mailman/listinfo/haskell-cafe
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