[GHC] #13842: Is this output from :all-types correct

[GHC]

#13842: Is this output from :all-types correct
-------------------------------------+-------------------------------------
        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      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:                    |
-------------------------------------+-------------------------------------

@@ -14,1 +14,1 @@
- λ> :all-types
+ > :all-types

New description:

 Is this the expected outcome of loading

 {{{#!hs
 data B = F | T

 instance Eq B
 }}}

 with
 [https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/ghci.html
 #ghci-cmd-:set%20+c :set +c] and then running the `:all-types` command?

 {{{
 > :all-types
 /tmp/test.hs:(3,10)-(3,14): GHC.Classes.Eq Main.B
 /tmp/test.hs:(3,10)-(3,14): (Main.B -> Main.B -> GHC.Types.Bool) ->
 GHC.Classes.Eq Main.B
 /tmp/test.hs:(3,10)-(3,14): (Main.B -> Main.B -> GHC.Types.Bool) ->
 (Main.B -> Main.B -> GHC.Types.Bool) -> GHC.Classes.Eq Main.B
 /tmp/test.hs:(3,10)-(3,14): Main.B -> Main.B -> GHC.Types.Bool
 /tmp/test.hs:(3,10)-(3,14): Main.B -> Main.B -> GHC.Types.Bool
 }}}

--

Comment (by Iceland_jack):

 Gives me an `Addr#`

 {{{
 > :all-types
 /tmp/test.hs:(6,10)-(6,15): Main.A [a]
 /tmp/test.hs:(6,10)-(6,15): [a] -> Main.A [a]
 /tmp/test.hs:(6,10)-(6,15): [a]
 /tmp/test.hs:(6,10)-(6,15): [a]
 /tmp/test.hs:(6,10)-(6,15): GHC.Prim.Addr# -> [a]
 /tmp/test.hs:(6,10)-(6,15): GHC.Prim.Addr#
 }}}

 from

 {{{#!hs
 data List a = Nil | a ::: List a

 class A a where
   getA :: a

 instance A [a]
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13842#comment:1>
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