Reported: http://hackage.haskell.org/trac/ghc/ticket/5287 2011/6/28 Alberto G. Corona

2011/6/28 Jason Dagit

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On Tue, Jun 28, 2011 at 3:43 AM, Alberto G. Corona wrote:

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I have an "'impossible' happened" error. The code may look a little bit convoluted but it is part of my real code.:

I don't know why it's crashing, but did you already report it as a bug? If not, you definitely should.

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Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug

That URL should have the info you need to report it.

Jason

Not published yet. I wanted to publish it in the list before reporting the bug. Just in case anyone tell something interesting about it. A sorter expression that produces the same bug or something similar.