[GHC] #11167: Fixity of field-deconstructors incorrect

[GHC]

#11167: Fixity of field-deconstructors incorrect
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        Reporter:  hvr               |                Owner:  kanetw
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by kanetw):

 Ok, so the source of the problem lies in RnExpr.hs:`rnExpr (OpApp ...)`,
 there's a missing case for when we have a record field.

 But now we've got a problem. We're running this during renaming, so we
 don't have the corresponding `Id` yet, only a `Name`. If the record field
 is `Unambiguous`, that's not a problem -- `PostRn Name Name = Name`. But
 if it's `Ambiguous`, `PostTc Name Name = PlaceHolder`, i.e. we have no way
 of getting the name.

 The `Unambiguous` case is easy, and that'd solve this ticket. But we need
 to deal with the `Ambiguous` case, too.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11167#comment:5>
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