[GHC] #15385: -Wincomplete-patterns gets confused when combining GADTs and pattern guards

[GHC]

#15385: -Wincomplete-patterns gets confused when combining GADTs and pattern guards
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.5
      Resolution:                    |             Keywords:
                                     |  PatternMatchWarnings
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4968
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 > To be clear, the problems you're describing in comment:3 aren't unique
 to pattern guards, but rather anything that generates term equalities for
 the coverage checker (which includes case expressions)?

 Correct, yes.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15385#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler