[GHC] #14490: TTG Snags

[GHC]

#14490: TTG Snags
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        Reporter:  alanz             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14482            |  Differential Rev(s):
       Wiki Page:                    |
  ImplementingTreesThatGrow          |
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Comment (by simonpj):

 I'm ok with Plan B.  But can you explain what you mean by this?

 > Plan F is complex, and requires special case treatment of traversals
 into extension points that are actually used.

 What is the special case treatment and why do we need it?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14490#comment:45>
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