[GHC] #14004: G

[GHC]

#14004: G
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        Reporter:  zaoqi             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      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 AntC):

 Hi @bgamari, I got this to work just changing the pragmas, per my
 comment:7. (So I editted that comment after posting.) Note there's a `Eq a
 =>` constraint on the `GEq a a` instance; but not on the `GEq a b`.

 {{{

 Dyn "hello" == Dyn "bye"    ===> False
 Dyn "hello" == Dyn "hello"  ===> True
 Dyn "hello" == Dyn 'b'      ===> False

 }}}

 I agree @zaoqi's definition for `Dyn` is 'dodgy'.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14004#comment:9>
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