#8163: ghc.exe: panic! (the 'impossible' happened) ---------------------------------------+----------------------------------- Reporter: CodeGuru | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.4.2 Resolution: duplicate | Keywords: Operating System: Windows | Architecture: Type of failure: Compile-time crash | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ---------------------------------------+----------------------------------- Changes (by monoidal): * status: new => closed * resolution: => duplicate Comment: This is a known error, it should be `deriving (Show)`. It is fixed in GHC 7.6; see #5961 and [[ReportABug]]. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8163#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler