[GHC] #11786: Need -fno-print-explicit-runtime-reps to work on IfaceType, else RuntimeRep leaks

[GHC]

#11786: Need -fno-print-explicit-runtime-reps to work on IfaceType, else RuntimeRep
leaks
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:  fixed             |             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 sighingnow):

 This bug still exists in ghc-HEAD.

 With or without `:set -fprint-explicit-runtime-reps`, we both have

 {{{#!hs
 Prelude> :t ($)
 ($) :: (a -> b) -> a -> b
 Prelude> :i ($)
 ($) ::
   forall (r :: GHC.Types.RuntimeRep) a (b :: TYPE r).
   (a -> b) -> a -> b
         -- Defined in ‘GHC.Base’
 infixr 0 $
 }}}

 This behavior is inconsistent with the description in user guide:
 https://downloads.haskell.org/~ghc/master/users-guide/using.html#ghc-flag
 --fprint-explicit-runtime-reps

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11786#comment:6>
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