[GHC] #12843: Simplifier ticks exhausted When trying UnfoldingDone $

[GHC]

#12843: Simplifier ticks exhausted When trying UnfoldingDone $
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        Reporter:  MikolajKonarski   |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12776 #12789     |  Differential Rev(s):
  #12675                             |
       Wiki Page:                    |
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Comment (by simonpj):

 I'm more worried about the `Iface Id out of scope` errors, which are
 outright wrong.  How can I reproduce those?

 The "ticks-exhausted" thing may be just that there is a lot of inlining
 going on under library control, and so absolutely fine. Do you have a
 reason to suppose otherwise?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12843#comment:6>
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