[GHC] #13994: STG lint failure on master

[GHC]

#13994: STG lint failure on master
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:  stg-lint
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by osa1):

 I get a different error when I use your `build.mk` with latest master
 branch:


 {{{
 "inplace/bin/ghc-stage1" -hisuf hi -osuf  o -hcsuf hc -static  -O -H64m
 -Wall   -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header
 -Iincludes/dist-ghcconstants/header   -this-unit-id ghc-8.5 -hide-all-
 packages -i -icompiler/backpack -icompiler/basicTypes -icompiler/cmm
 -icompiler/codeGen -icompiler/coreSyn -icompiler/deSugar -icompiler/ghci
 -icompiler/hsSyn -icompiler/iface -icompiler/llvmGen -icompiler/main
 -icompiler/nativeGen -icompiler/parser -icompiler/prelude
 -icompiler/profiling -icompiler/rename -icompiler/simplCore
 -icompiler/simplStg -icompiler/specialise -icompiler/stgSyn
 -icompiler/stranal -icompiler/typecheck -icompiler/types -icompiler/utils
 -icompiler/vectorise -icompiler/stage2/build -Icompiler/stage2/build
 -icompiler/stage2/build/./autogen -Icompiler/stage2/build/./autogen
 -Icompiler/. -Icompiler/parser -Icompiler/utils
 -Icompiler/../rts/dist/build -Icompiler/stage2   -optP-DGHCI -optP-include
 -optPcompiler/stage2/build/./autogen/cabal_macros.h -package-id
 array-0.5.2.0 -package-id base-4.11.0.0 -package-id binary-0.8.5.1
 -package-id bytestring-0.10.8.2 -package-id containers-0.5.11.0 -package-
 id deepseq-1.4.3.0 -package-id directory-1.3.1.5 -package-id
 filepath-1.4.1.2 -package-id ghc-boot-8.5 -package-id ghc-boot-th-8.5
 -package-id ghci-8.5 -package-id hpc-0.6.0.3 -package-id process-1.6.2.0
 -package-id template-haskell-2.13.0.0 -package-id terminfo-0.4.1.1
 -package-id time-1.8.0.2 -package-id transformers-0.5.5.0 -package-id
 unix-2.7.2.2 -Wall -Wno-name-shadowing -Wnoncanonical-monad-instances
 -Wnoncanonical-monadfail-instances -Wnoncanonical-monoid-instances -this-
 unit-id ghc -XHaskell2010 -XNoImplicitPrelude -optc-DTHREADED_RTS
 -DGHCI_TABLES_NEXT_TO_CODE -DSTAGE=2 -Rghc-timing -O0 -DDEBUG -g3 -ddump-
 to-file -ddump-stg -dcore-lint -dstg-lint -dcmm-lint -Wcpp-undef -no-user-
 package-db -rtsopts       -Wnoncanonical-monad-instances  -odir
 compiler/stage2/build -hidir compiler/stage2/build -stubdir
 compiler/stage2/build   -dynamic-too -c compiler/utils/FastString.hs -o
 compiler/stage2/build/FastString.o -dyno
 compiler/stage2/build/FastString.dyn_o
 ghc-stage1: panic! (the 'impossible' happened)
   (GHC version 8.5.20180206 for x86_64-unknown-linux):
         kindPrimRep
   RuntimeRep
   typePrimRep ('IntRep :: RuntimeRep)
   Call stack:
       CallStack (from HasCallStack):
         callStackDoc, called at compiler/utils/Outputable.hs:1150:37 in
 ghc:Outputable
         pprPanic, called at compiler/simplStg/RepType.hs:346:5 in
 ghc:RepType

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

 Interestingly if I remove `-dstg-lint` parameter it compiles fine. So it
 seems like there still is a problem with `StgLint`, but maybe a different
 one than the original error.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13994#comment:3>
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