Re: [GHC] #13233: typePrimRep panic while compiling GHC with profiling

6 Feb 2017

      #13233: typePrimRep panic while compiling GHC with profiling
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        Reporter:  bgamari           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         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 bgamari):

 It looks like this binding from the Core Prep output is the culprit,
 {{{
 -- RHS size: {terms: 8, types: 27, coercions: 0}
 StgCmmMonad.$fHasDynFlagsFCode2
   :: StgCmmMonad.CgInfoDownwards
      -> StgCmmMonad.CgState
      -> (# StgCmmMonad.CgInfoDownwards, StgCmmMonad.CgState #)
 [GblId]
 StgCmmMonad.$fHasDynFlagsFCode2 =
   case \ (@ (k0_10 :: GHC.Types.RuntimeRep))
          (@ (k1_11 :: GHC.Types.RuntimeRep))
          (@ (a_12 :: TYPE k0))
          (@ (b_13 :: TYPE k1)) ->
          GHC.Prim.(#,#) @ k0 @ k1 @ a @ b
   of sat_skkE
   { __DEFAULT ->
   sat_skkE
     @ 'GHC.Types.LiftedRep
     @ 'GHC.Types.LiftedRep
     @ StgCmmMonad.CgInfoDownwards
     @ StgCmmMonad.CgState
   }

 }}}

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13233#comment:7
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