[GHC] #8540: Template Haskell handling bug in ghc-7.7.20131115 ?

[GHC]

#8540: Template Haskell handling bug in ghc-7.7.20131115 ?
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        Reporter:  awson             |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Runtime crash     |       Difficulty:  Unknown
       Test Case:  th/T8540          |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by simonpj):

 I have `-DDEBUG` on too (certainly in `TcEnv`), and these tests work fine
 for me.  I don't know how to account for this.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8540#comment:12>
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