[GHC] #15656: Extend -Wall with incomplete-uni-patterns and incomplete-record-updates

[GHC]

#15656: Extend -Wall with incomplete-uni-patterns and incomplete-record-updates
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        Reporter:  ckoparkar         |                Owner:  RolandSenn
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:  GHCProposal
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 ckoparkar):

 RolandSenn, feel free to commandeer that patch.

 Adding the flags to {{{-Wall}}} was the easy part, and that's done.
 However, we still need to do something about the code in GHC which is
 unsafe per these two flags. (Attached the build/error log).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15656#comment:4>
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