[Haskell-cafe] Uncatchable error

[Daniel Peebles]

It's a hack by design, to work around libraries that do the wrong thing.

On Fri, Mar 11, 2011 at 4:07 PM, Henning Thielemann <
lemming at henning-thielemann.de> wrote:

>
> On Fri, 11 Mar 2011, Daniel Peebles wrote:
>
>  Check out the spoon package on hackage. It's designed for these kinds of
>> situations, and
>> will wrap up common user-generated "pure" exceptions into a Maybe (and
>> will return
>> Nothing in the cases you describe)
>>
>
> This is a hack, since 'undefined' cannot be detected in general. The clean
> solution would be to find out where invalid file descriptors are detected in
> the IO code, and throw a real IOException instead of an 'error'.
>
>
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