[GHC] #15108: Panic: collectNBinders

[GHC]

#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:                    |
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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>
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