[GHC] #2722: <<loop> when compiling with -O option with ghc-6.10.0.20081019

[GHC]

#2722: <<loop> when compiling with -O option with ghc-6.10.0.20081019
-----------------------------------------+----------------------------------
  Reporter:  uwe                         |          Owner:  simonpj       
      Type:  bug                         |         Status:  infoneeded    
  Priority:  normal                      |      Milestone:  7.0.3         
 Component:  libraries (other)           |        Version:  7.0.1         
Resolution:                              |       Keywords:  arrows        
  Testcase:  tyepcheck/should_run/T2722  |      Blockedby:                
Difficulty:  Unknown                     |             Os:  Linux         
  Blocking:                              |   Architecture:  x86_64 (amd64)
   Failure:  Runtime crash               |  
-----------------------------------------+----------------------------------

Comment(by igloo):

 I've attached a dependency-free testcase:

 {{{
 $ ghc --make -O T2722 -fforce-recomp && ./T2722; ghc --make -O0 T2722
 -fforce-recomp && ./T2722
 [1 of 1] Compiling Main             ( T2722.hs, T2722.o )
 Linking T2722 ...
 T2722: <<loop>>
 [1 of 1] Compiling Main             ( T2722.hs, T2722.o )
 Linking T2722 ...
 [[("testObj",1)],[("testObj",1)]]
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2722#comment:17>
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