#10045: type holes related ghc panic -------------------------------------+------------------------------------- Reporter: pacak | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1-rc2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Compile-time Unknown/Multiple | crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- {{{ sample.hs:9:13: Couldn't match expected type ‘t’ with actual type ‘()’ ‘t’ is untouchable inside the constraints () bound by the inferred type of foo :: Meta -> t1 at sample.hs:(6,1)-(9,17)ghc: panic! (the 'impossible' happened) (GHC version 7.10.0.0 for x86_64-unknown-linux): No skolem info: t_avJ[sk] Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug sample.hs: module Blah where newtype Meta = Meta () foo (Meta ws1) = let copy :: _ copy w from = copy w 1 in copy ws1 1 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10045 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler