Akio Thanks that's amazing! I wonder if it'd be worth adding it, with commentary, (and attaching the files) as a Trac ticket? I know its already fixed, but it's great to be able to say "to see an example of why this is vital, see Trac #8324", whereas email archives are more ephemeral somehow.
Simon From: Glasgow-haskell-users [mailto:glasgow-haskell-users-boun...@haskell.org] On Behalf Of Akio Takano Sent: 23 August 2013 11:35 To: glasgow-haskell-users@haskell.org; Richard Eisenberg Subject: Fwd: New restrictions to open type families (I forgot to send to the list, trying again) Thank you very much for your detailed explanation! On Fri, Aug 23, 2013 at 1:24 PM, Richard Eisenberg <e...@cis.upenn.edu<mailto:e...@cis.upenn.edu>> wrote: This is a good question. Happily, there are at least two decent answers. 1) We're not sure that this problem cannot cause a segfault... it's just that we've been unable to produce one when trying. Perhaps we haven't tried hard enough. I successfully constructed such an example. https://github.com/takano-akio/type-family-overlap - Akio
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