[GHC] #14771: TypeError reported too eagerly

[GHC]

#14771: TypeError reported too eagerly
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        Reporter:  hsyl20            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.2.2
  checker)                           |             Keywords:
      Resolution:                    |  CustomTypeErrors
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  error/warning at compile-time      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hsyl20):

 Nice! `Assert` did the trick, thanks!

 I'll fill another ticket for issue 2 if I find a better example.

 I leave the ticket open to discuss if we want `Assert` to be added to
 `Data.Type.Bool`. Otherwise we can close it.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14771#comment:7>
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