[GHC] #14307: NamedFieldPuns should allow "ambiguous" field names

[GHC]

#14307: NamedFieldPuns should allow "ambiguous" field names
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        Reporter:  mgsloan           |                Owner:  (none)
            Type:  feature request   |               Status:  closed
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  rename/should_fail/T14307
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 >  Perhaps the error message could mention the extension since it's a
 rarer one?

 That's a good idea, but as the code stands it would be fiddly to
 implement.  I had a look at the tricky logic in
 `RnEnv.lookupSubBndrOcc_helper` and backed off.

 Surely this code can be made more perspicuous! If anyone wants to have a
 go I'd be happy to help.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14307#comment:7>
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