[Haskell-cafe] -fdefer-type-errors

[Bill Hallahan]

Thanks for the pointer!  I hadn't gotten to reporting it yet, so nothing to update.

 Bill

> On Apr 17, 2019, at 11:03 PM, Richard Eisenberg <rae at richarde.dev> wrote:
> 
> I believe this is a known bug: #11197 (https://gitlab.haskell.org/ghc/ghc/issues/11197 <https://gitlab.haskell.org/ghc/ghc/issues/11197>)
> 
> If you reported this again, could you please update your post to point to #11197? Thanks for reporting, regardless!
> 
> Richard
> 
>> On Apr 17, 2019, at 6:20 PM, Artem Pelenitsyn <a.pelenitsyn at gmail.com <mailto:a.pelenitsyn at gmail.com>> wrote:
>> 
>> I checked the release prior to 8.0.1 — 7.10.3, and it worked as expected (returned `True`). This looks like a bug introduced somewhere in between. I wish I could do git bisect on GHC properly…
>> 
>> Worth reporting, I guess.
>> 
>> --
>> Best, Artem
>> 
>> On Wed, 17 Apr 2019 at 16:26, Tom Ellis <tom-lists-haskell-cafe-2017 at jaguarpaw.co.uk <mailto:tom-lists-haskell-cafe-2017 at jaguarpaw.co.uk>> wrote:
>> On Wed, Apr 17, 2019 at 04:17:17PM -0400, Bill Hallahan wrote:
>> > However, with GHC 8.2.2, I get an error when trying to do this:
>> [...]
>> > Prelude> let foo = (True, 'a' && False)
>> [...]
>> > Prelude> fst foo
>> > *** Exception: <interactive>:1:18: error:
>> >     • Couldn't match expected type ‘Bool’ with actual type ‘Char’
>> 
>> FWIW I see this behaviour in GHC 8.0.1 too.
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