#12727: ghc: panic! (the 'impossible' happened) - piResultTy -------------------------------------+------------------------------------- Reporter: ocharles | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): This is a definite bug. It'll be hard to do much about this without the ability to reproduce the bug. Could you compile everything with `-dore-lint`? Maybe it's already fixed. cf #12676 Any chance you can try with HEAD? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12727#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler