#12835: ghc: panic! (the 'impossible' happened) - find_tycon -------------------------------------+------------------------------------- Reporter: mrijkeboer | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Linux Architecture: x86_64 | Type of failure: Compile-time (amd64) | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- {{{ $ stack build server-0.0.0.1: build -- While building package server-0.0.0.1 using: /home/martijn/.stack/setup-exe-cache/x86_64-linux/setup-Simple- Cabal-1.24.0.0-ghc-8.0.1 --builddir=.stack- work/dist/x86_64-linux/Cabal-1.24.0.0 build lib:server exe:server --ghc- options " -ddump-hi -ddump-to-file" Process exited with code: ExitFailure 1 Logs have been written to: /home/martijn/server/.stack- work/logs/server-0.0.0.1.log Preprocessing library server-0.0.0.1... [20 of 20] Compiling Application ( src/Application.hs, .stack- work/dist/x86_64-linux/Cabal-1.24.0.0/build/Application.o ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.1 for x86_64-unknown-linux): find_tycon YesodSubRunnerEnv [] Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12835 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler