[GHC] #10823: Don't mark functions with annotations as dead

[GHC]

#10823: Don't mark functions with annotations as dead
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        Reporter:  spinda            |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Template Haskell  |                 Version:  7.10.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by spinda):

 {{{lq}}} is a [https://hackage.haskell.org/package/template-
 haskell-2.5.0.0/docs/Language-Haskell-TH-Quote.html#t:QuasiQuoter
 QuasiQuoter], and in the declaration context it produces a list of
 {{{Dec}}} containing a {{{PragmaD (AnnP (ValueAnnotation (mkName "gt"))
 IsInline)}}}. GHC picks this up, converts it to {{{HsDecl}}}, and feeds it
 through the renaming/typechecking phase along with all the other
 declarations in the group.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10823#comment:8>
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