#7886: data command does not work on WinGHCi -------------------------+-------------------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 7.4.2 | Keywords: Os: Windows | Architecture: Unknown/Multiple Failure: None/Unknown | Blockedby: Blocking: | Related: -------------------------+-------------------------------------------------- An error is obtained when defining a new data type in WinGHCi with the data command. {{{ data List a = Empty | Cons a (List a) deriving (show) }}} The error is as follows. {{{ ghc: panic! (the 'impossible' happened) (GHC version 7.4.2 for i386-unknown-mingw32): nameModule show{tv aC4} Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7886 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler