#10999: ghc: panic! (the 'impossible' happened) -------------------------------------+------------------------------------- Reporter: res | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Compile-time Unknown/Multiple | crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The attached program elicits the following error from GHC 7.10.2: {{{ Couldn't match type ‘a’ with ‘(t0, t1, t2)’ ‘a’ is untouchable inside the constraints () bound by the inferred type of updateKeytab :: FilePath -> Handle -> IO () at /u/res/g/src/remctl-tools/foo.hs:(58,1)-(69,26)ghc: panic! (the 'impossible' happened) (GHC version 7.10.2 for x86_64-unknown-linux): No skolem info: a_akOb[sk] Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10999 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler