[GHC] #11513: Work out when GADT parameters should be specified

[GHC]

#11513: Work out when GADT parameters should be specified
-------------------------------------+-------------------------------------
        Reporter:  goldfire          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
                                     |  TypeApplications
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 This is a very quiet change
 {{{
 -    rep_ty = mkSpecForAllTys univ_tvs $ mkInvForAllTys ex_tvs $
 +    rep_ty = mkSpecForAllTys univ_tvs $ mkSpecForAllTys ex_tvs $
 }}}
 Is it worth a comment and an example?  After all, it can't have been
 obvious to you the first time.

 Test case?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11513#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler