#13680: Can't use TypeApplications with [] data constructor -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Keywords: Resolution: | TypeApplications Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): Then just accept the new output. :) The test case for #12957 is not testing to see if GHC can report a redundant pattern match -- it's checking to make sure GHC avoids a panic. This change would bring the behavior around lists in line with that for other datatypes. Note that `case Nothing of Just _ -> ...` does not report a redundant match. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13680#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler