[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:
            Type:  bug               |               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 simonpj):

 Indeed, since
  * we want `:type` do do deep-instantiation (#11376), and
  * I think we don't generalise over `RuntimeRep` variables,
 the ''only'' time `-fno-print-explicit-runtime-reps` now has an effect
 (except perhaps in debug output) is in `:info`; and that is precisely when
 it doesn't work!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11786#comment:1>
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