[Haskell-cafe] -fdefer-type-errors

[Richard Eisenberg]

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> 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.
> _______________________________________________
> Haskell-Cafe mailing list
> To (un)subscribe, modify options or view archives go to:
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe <http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe>
> Only members subscribed via the mailman list are allowed to post.
> _______________________________________________
> Haskell-Cafe mailing list
> To (un)subscribe, modify options or view archives go to:
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> Only members subscribed via the mailman list are allowed to post.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/haskell-cafe/attachments/20190417/8bd9b58c/attachment.html>