A question about roles.

[Richard Eisenberg]

Hi Alex,

Do you have a concrete example? With the -dcore-lint flag, the Core is checked, including all the roles.

Thanks,
Richard

On Aug 16, 2015, at 7:47 AM, Alexander Eyers-Taylor <aeyerstaylor11 at gmail.com> wrote:

> Hello
> 
> I have noticed in looking at some core that GADT type constructors are often applied with a representational role. These constructors are explicitly marked as nominal.
> 
> Is this information just ignored at a Core level or is this invalid core?
> 
> Looking at the code a see that we if we downgrade a TyConAppCo we unconditionally change it to a representational role after changing its children. I think this is where it is introduced.
> 
> Alex ET
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