#15108: Panic: collectNBinders -------------------------------------+------------------------------------- Reporter: cdisselkoen | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Profiling | Version: 8.4.2 Resolution: | Keywords: panic | collectNBinders Operating System: Linux | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by cdisselkoen): Note: also reproduces with GHC 8.2.2 (stackage `lts-11.7`). {{{ $ stack ghc -- --version The Glorious Glasgow Haskell Compilation System, version 8.2.2 $ stack build --profile bug-0.1.0.0: configure (exe) Configuring bug-0.1.0.0... bug-0.1.0.0: build (exe) Preprocessing executable 'bug' for bug-0.1.0.0.. Building executable 'bug' for bug-0.1.0.0.. [1 of 1] Compiling Main ( Main.hs, .stack-work/dist/x86_64 -linux-tinfo6-nopie/Cabal-2.0.1.0/build/bug/bug-tmp/Main.p_o ) ghc: panic! (the 'impossible' happened) (GHC version 8.2.2 for x86_64-unknown-linux): collectNBinders 1 Call stack: CallStack (from HasCallStack): prettyCurrentCallStack, called at compiler/utils/Outputable.hs:1133:58 in ghc:Outputable callStackDoc, called at compiler/utils/Outputable.hs:1137:37 in ghc:Outputable pprPanic, called at compiler/coreSyn/CoreSyn.hs:1997:25 in ghc:CoreSyn Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug -- While building custom Setup.hs for package bug-0.1.0.0 using: /usr/local/home/cdisselk/.stack/setup-exe-cache/x86_64-linux- tinfo6-nopie/Cabal-simple_mPHDZzAJ_2.0.1.0_ghc-8.2.2 --builddir=.stack- work/dist/x86_64-linux-tinfo6-nopie/Cabal-2.0.1.0 build exe:bug --ghc- options " -ddump-hi -ddump-to-file -fdiagnostics-color=always" Process exited with code: ExitFailure 1 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15108#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler