#12727: ghc: panic! (the 'impossible' happened) - piResultTy -------------------------------------+------------------------------------- Reporter: ocharles | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2-rc1 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 ocharles): Another panic that is different from all the above: {{{ [231 of 278] Compiling Handler.Pallets ( src/Handler/Pallets.hs, dist/build/Handler/Pallets.o ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.1.20161117 for x86_64-unknown-linux): getClassPredTys [Sql] }}} It's very strange that we seem to get different panics every time -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12727#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler