#14813: EmptyCase thinks pattern match involving type family is not exhaustive, when it actually is -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Resolution: | Keywords: | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): But `()` and `F 'MkUnit` are equal types, so it's probably a bit random which gets reported wehre. Why do you think the typechecker "isn't giving the correct type", and would would be consequences of that be? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14813#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler