#7553: ghc fails to terminate with -O2 or greater
-------------------------------+--------------------------------------------
Reporter:  erikd               |          Owner:                  
    Type:  bug                 |         Status:  new             
Priority:  normal              |      Component:  Compiler        
 Version:  7.6.1               |       Keywords:                  
      Os:  Unknown/Multiple    |   Architecture:  Unknown/Multiple
 Failure:  Compile-time crash  |      Blockedby:                  
Blocking:                      |        Related:                  
-------------------------------+--------------------------------------------

Comment(by erikd):

 I've add -ddump-rule-rewrites to the command line and the last rule firing
 before it seems to hang with 100% CPU usage is:

 {{{
 Rule fired
     Rule: Class op +
     Before: GHC.Num.+
               (TYPE GHC.Types.Int) GHC.Num.$fNumInt i1_a2tL (GHC.Types.I#
 1)
     After:  GHC.Num.$fNumInt_$c+
     Cont:   Stop[BoringCtxt] GHC.Types.Int
 }}}

 Is this the rule that is hanging or is the next one that has not yet been
 displayed?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7553#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

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