[GHC] #15630: panic! Simplifier ticks exhausted

[GHC]

#15630: panic! Simplifier ticks exhausted
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        Reporter:  micahshahn    |                Owner:  (none)
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:
       Component:  Compiler      |              Version:  8.5
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
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Comment (by simonpj):

 I strongly suspect that this is another example of #13253.  Look at the
 example in `bad.hs` on that ticket.  We know exactly what is going wrong
 -- see the comment stream.

 I've had a fix pending in my tree for months, but I keep getting pre-
 empted.  Your new ticket will help incentivise me.

 Is it mission critical for you?  Putting NOINLINE on `<+>` might well fix
 it.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15630#comment:2>
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