[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 Simon Peyton Jones <simonpj@…>):

 In [changeset:"f3a841612e754536d635e8c970fb67453fb57cab/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="f3a841612e754536d635e8c970fb67453fb57cab"
 More faff to get GHCi's top-level environment right

 This fixes #8540 (again), and simplifies matters a bit more. In
 particular, I got rid of ic_sys_vars altogether.  Mostly they can just
 go in ic_tythings, apart from dfuns, which are readily gettable from
 the instances anyway.

 See documentation in Note [Initialising the type environment for GHCi]
 in TcEnv.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8540#comment:14>
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