Fwd: New restrictions to open type families

Akio Takano tkn.akio at gmail.com
Fri Aug 23 12:34:50 CEST 2013


(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 <eir at 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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