#15175: ghc: panic! (the 'impossible' happened) -------------------------------------+------------------------------------- Reporter: MADjestic | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Arrows Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #5777, #13547 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * keywords: => Arrows * os: Linux => Unknown/Multiple * architecture: x86_64 (amd64) => Unknown/Multiple * related: => #5777, #13547 Comment: Thanks, sighingnow. My suspicion is that this is a duplicate of #5777 or #13547, since: 1. This requires `proc`-notation 2. This involves a GADT (`Point2`) I'm not confident enough in this analysis to conclude it's an exact duplicate, but maybe someone more familiar with arrows than I can do so. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15175#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler