[GHC] #12145: GHC 8.0.1 compilier panic - find_tycon

[GHC]

#12145: GHC 8.0.1 compilier panic - find_tycon
-------------------------------------+-------------------------------------
           Reporter:  highfly        |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:                 |  Operating System:  Linux
       Architecture:  x86_64         |   Type of failure:  Compile-time
  (amd64)                            |  crash
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 angie-0.0.0: configure
 Configuring angie-0.0.0...
 angie-0.0.0: build
 Preprocessing library angie-0.0.0...
 [ 8 of 11] Compiling Handler.Home     ( Handler/Home.hs, .stack-
 work/dist/x86_64-linux/Cabal-1.24.0.0/build/Handler/Home.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.1 for x86_64-unknown-linux):
         find_tycon
   Block
   []

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

 --  While building package angie-0.0.0 using:
       /home/haiwei/.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:angie exe:angie --ghc-
 options " -ddump-hi -ddump-to-file"
     Process exited with code: ExitFailure 1

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12145>
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