#9309: Regression when building the 'sizes' application ----------------------------+---------------------------------------------- Reporter: | Owner: JohnWiegley | Status: new Type: bug | Milestone: 7.10.1 Priority: normal | Version: 7.8.3 Component: Compiler | Operating System: Unknown/Multiple Keywords: | Type of failure: GHC rejects valid program Architecture: | Test Case: Unknown/Multiple | Blocking: Difficulty: Unknown | Blocked By: | Related Tickets: | ----------------------------+---------------------------------------------- I have a package on Hackage called `sizes`. It builds fine with GHC 7.8.2, but when building with 7.8.3 I get: ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-apple-darwin): make_exp (App _ (Coercion _)) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9309 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler