[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:  new
        Priority:  highest           |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
                                     |  LevityPolymorphism
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13275, #15181    |  Differential Rev(s):  Phab:D4733
       Wiki Page:                    |
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Comment (by simonpj):

 Another oddity is that `elminiateRunTimeRep` (which works recursively) is
 called by `pprIfaceSigmaTy`, which is called from `ppr_sigma` which is
 called by `ppr_ty` which is also recursive.

 This can't be right. I think `eliminateRuntimeRep` should only be called
 at top level

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11786#comment:17>
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