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  • #17472

Closed
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Opened Nov 12, 2019 by Vaibhav Sagar@vaibhavsagar
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Ord1 instance for Down is broken

Summary

https://twitter.com/Iceland_jack/status/1193558757122494466

Steps to reproduce

> import Data.Ord
> import Data.Functor.Classes
> compare1 (Down 1) (Down 2)
LT

Expected behavior

> compare1 (Down 1) (Down 2)
GT

Environment

  • GHC version used: 8.6.5

Optional:

  • Operating System: NixOS 19.09
  • System Architecture: x86-64

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8.12.1
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8.12.1
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bug core libraries P::highest
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Reference: ghc/ghc#17472