[GHC] #11600: Panic (ASSERT failed) in compiler/types/TyCoRep.hs:1939

[GHC]

#11600: Panic (ASSERT failed) in compiler/types/TyCoRep.hs:1939
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        Reporter:  hvr               |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by niteria):

 Unfortunately that trace is one stack frame too short to be helpful.
 I've tried bootstrapping with GHC HEAD, but first `./configure` complained
 and then after I used the flag it suggested it failed with:
 {{{

 libraries/binary/src/Data/Binary/Put.hs:38:0: error:
      error: missing binary operator before token "("

 libraries/binary/src/Data/Binary/Put.hs:78:0: error:
      error: missing binary operator before token "("

 libraries/binary/src/Data/Binary/Put.hs:186:0: error:
      error: missing binary operator before token "("
 `gcc' failed in phase `C pre-processor'. (Exit code: 1)
 gmake[1]: *** [utils/ghc-cabal/dist/build/tmp/ghc-cabal] Error 1
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11600#comment:7>
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