[GHC] #962: hptRules crash

[GHC]

#962: hptRules crash
-------------------------+--------------------------------------------------
    Reporter:  guest     |       Owner:         
        Type:  bug       |      Status:  new    
    Priority:  normal    |   Milestone:         
   Component:  Compiler  |     Version:  6.6    
    Severity:  normal    |    Keywords:         
  Difficulty:  Unknown   |    Testcase:         
Architecture:  Unknown   |          Os:  Unknown
-------------------------+--------------------------------------------------
I got this blowup from ghc-6.6 (ghc-6.6-2 from Debian unstable on i386).

 ghc-6.6: panic! (the 'impossible' happened)
   (GHC version 6.6 for i386-unknown-linux):
         hptRules
     Authorization [(Authorization, False), (BinParse, False),
                    (BinaryIO, False), (BuildVersion, False), (CFreeVars,
 False),                   (CParser, False), (CSyntax, False), (CType,
 False),
                    (CVParser, False), (CVParserAssertion, False),
                    (CVParserCommon, False), (CVParserImperative, False),
                    (CVParserUtil, False), (CVPrint, False), (Classic,
 False),
                    (Error, False), (ErrorUtil, False), (Eval, False),
                    (FStringCompat, False), (FileIOUtil, False),
 (FileNameUtil, False),
                    (Fixity, False), (Flags, False), (Flexlm, False),
                    (GHCPretty, False), (Hash, False), (IOMutVar, False),
                    (IOUtil, False), (Id, False), (IdPrint, False),
 (IntLit, False),
                    (IntMap, False), (IntegerMisc, False), (IntegerUtil,
 False),
                    (Lex, False), (ListSet, False), (ListUtil, False),
                    (Literal, False), (Log2, False), (NumType, False),
 (OrdMap, False),
                    (OrdSet, False), (PFPrint, False), (PPrint, False),
                    (PVPrint, False), (Parse, False), (Parsec, False),
                    (ParsecChar, False), (ParsecCombinator, False),
                    (ParsecExpr, False), (ParsecPrim, False), (Position,
 False),
                    (Pragma, False), (PreIds, False), (PreStrings, False),
                    (Pretty, False), (SEMonad, False), (SchedInfo, False),
                    (Sort, False), (SpeedyString, False),
                    (SystemVerilogKeywords, False),
 (SystemVerilogPreprocess, False),
                    (SystemVerilogScanner, False), (SystemVerilogTokens,
 False),
                    (Trace, False), (Type, False), (Util, False),
 (VModInfo, False),
                    (Version, False)]

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

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/962>
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