[GHC] #13073: BooleanFormula implies is wrong

[GHC]

#13073: BooleanFormula implies is wrong
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        Reporter:  ezyang            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.1
  checker)                           |
      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 mpickering):

 I am fairly sure the only place where `BooleanFormula` is used is
 `MINIMAL` pragmas but I assume you were trying to use it for something
 else if you found this bug.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13073#comment:1>
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