#12957: In a record-update construct:ghc-stage2: panic! (the 'impossible' happened) -------------------------------------+------------------------------------- Reporter: niteria | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 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): I think I'm running into the same bug. A super minimal example is: {{{ go = case [] of (a:b) -> a {b = a} }}} Do we think this is the same bug? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12957#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler