[GHC] #13916: Optimizations create run time seg faults

[GHC]

#13916: Optimizations create run time seg faults
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        Reporter:  newthin           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.2
       Component:  Compiler          |              Version:  8.0.2
  (CodeGen)                          |
      Resolution:                    |             Keywords:  optimization
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8091             |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 So after taking a bit a break I came back to this and realized that
 ticket:8091#comment:7 isn't quite right for the reason articulated in
 ticket:8091#comment:9. Instead I think the problem is that `ExnStr`
 demands aren't being pushed outwards when they should be. I've opened
 #13977 to explore this possibility.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13916#comment:20>
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