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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
  • GHCGHC
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  • #16263
Closed
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Issue created Jan 31, 2019 by Richard Eisenberg@raeDeveloper

Rework GHC's treatment of constraints in kinds

GHC 8.6 accepts

data Q :: Eq a => Type

It shouldn't, as we can't have Eq a as a constraint in kinds. Note that writing a constructor for Q is rejected.

Trac metadata
Trac field Value
Version 8.6.3
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
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Architecture
Edited Mar 10, 2019 by Ryan Scott
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