Re: [Haskell-cafe] Re: Haskell stacktrace

I was going to suggest using the -xc option of the GHC runtime (if you are using GHC), but it seems that it doesn't always give meaningful results as indicated here: http://osdir.com/ml/lang.haskell.glasgow.bugs/2006-09/msg00008.html and here: http://www.haskell.org/pipermail/glasgow-haskell-users/2006-November/011549.... You might want to try it anyway. It's documented in the GHC manual: http://haskell.org/ghc/docs/latest/html/users_guide/runtime-control.html Other than that, there are also haskell debuggers like hat, but I haven't used them myself so I can't really tell if they could help here. Best, Michał On Tue, 2008-09-09 at 22:35 +0200, Pieter Laeremans wrote:

Woops , I hit the "send" button to early.

The java approach to locate the error would be

try { ... }catch(Exception e ){ // log error throw new RuntimeException(e); }

...

What 's the best equivalent haskell approach ?

thanks in advance,

Pieter

On Tue, Sep 9, 2008 at 10:30 PM, Pieter Laeremans wrote: Hello,

I've written a cgi script in haskell, it crashes sometimes with the error message Prelude . tail : empty list

In Java we would use this approach to log the erro

try {

} catch (Exception e) {

}

-- Pieter Laeremans

"The future is here. It's just not evenly distributed yet." W. Gibson

-- Pieter Laeremans

"The future is here. It's just not evenly distributed yet." W. Gibson

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