[GHC] #4349: ASSERT failed! file compiler/types/FamInstEnv.lhs

[GHC]

#4349: ASSERT failed! file compiler/types/FamInstEnv.lhs
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  Reporter:  daniel.is.fischer    |          Owner:        
      Type:  bug                  |         Status:  closed
  Priority:  normal               |      Milestone:        
 Component:  Compiler             |        Version:  7.1   
Resolution:  fixed                |       Keywords:        
  Testcase:                       |      Blockedby:        
Difficulty:                       |             Os:  Linux 
  Blocking:                       |   Architecture:  x86   
   Failure:  Building GHC failed  |  
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Changes (by simonpj):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 Great.  Fixed by
 {{{
 Thu Oct  7 02:13:27 PDT 2010  simonpj at microsoft.com
   * Fix an ASSERT failure in FamInstEnv

   I added a lot of comments too, to explain the preconditions;
   esp Note [FamInstEnv]

     M ./compiler/types/FamInstEnv.lhs -20 +47
 }}}

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4349#comment:12>
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