[GHC] #11235: Haddock shows no class members

[GHC]

#11235: Haddock shows no class members
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  task              |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       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 simonpj):

 That is mysterious indeed.  If the other sigs were really getting dropped,
 ''nothing'' would work.

 Ah, here's a possibility. The `tcdSigs` for classes used to contain a
 `TypeSig` for each method, but now it contains a `ClassOpSig`.  Maybe
 Haddock is expecting the former but only finding the latter?  In
 `Haddock.Interface.Create` I see `typeDocs` which might be lacking a
 `ClassOpSig` case.  Possibly also elsewhere in Haddock?

 Does that give you enough to go on?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11235#comment:10>
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