[GHC] #15303: API Annotations lost when parsing tyapp

[GHC]

#15303: API Annotations lost when parsing tyapp
-------------------------------------+-------------------------------------
           Reporter:  alanz          |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Incorrect API
  Unknown/Multiple                   |  annotation
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 In `Parser.y`, the `typapp` production has

 {{{#!hs
         | SIMPLEQUOTE qconop            {% ams (sLL $1 $> $ TyElOpr (unLoc
 $2))
                                                [mj AnnSimpleQuote $1] }
         | SIMPLEQUOTE varop             {% ams (sLL $1 $> $ TyElOpr (unLoc
 $2))
                                                [mj AnnSimpleQuote $1] }
 }}}

 By using `unLoc $2` we are discarding any annotations attached to the
 `qconop` or `qvarop`.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15303>
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