[GHC] #8777: Ghc crashes when compiling happstack-server on ubuntu-docker

[GHC]

#8777: Ghc crashes when compiling happstack-server on ubuntu-docker
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        Reporter:  timthelion        |            Owner:
            Type:  bug               |           Status:  closed
        Priority:  low               |        Milestone:
       Component:  Compiler          |          Version:  7.4.1
      Resolution:  fixed             |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by monoidal):

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


Comment:

 Closing as 'fixed' since the issue is fixed in upcoming template-
 haskell-2.9:

 https://github.com/ghc/packages-template-
 haskell/commit/d7b864b7ddb0e8c2f58d08dfd50e843eb8966b90

 However, that fix will be present only in GHC 7.8, AFAIK 7.6 (or 7.4) is
 not going to have another bugfix release. Probably you can pester
 happstack's maintainers, a workaround should be easy.

 PS. Regarding reproduction: `pprExp 0 (CompE [])` in GHCi with TH should
 work.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8777#comment:1>
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