[GHC] #12571: GHC panic

[GHC]

#12571: GHC panic
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        Reporter:  prsteele          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by prsteele):

 Adding {{{-fforce-recomp}}} did in fact cause the bug to resurface. I've
 used this to isolate the value I need for {{{-fsimpl-tick-factor}}} to
 cause the compiler to succeed. In particular, {{{-fsimpl-tick-
 factor=110}}} causes the compiler to fail, but {{{-fsimpl-tick-
 factor=111}}} causes the compiler to succeed.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12571#comment:2>
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