[GHC] #11562: WARNING: file compiler/stgSyn/CoreToStg.hs, line 250: $fCategoryConstraint:- True False

[GHC]

#11562: WARNING: file compiler/stgSyn/CoreToStg.hs, line 250:
$fCategoryConstraint:- True False
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        Reporter:  slyfox            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      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 slyfox):

 > Might be a result of ​Phab:D1889
 Same warning exists in current ghc-8.0 as well thus something else is
 happening here.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11562#comment:1>
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