[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):

 For the record, as far as short term solutions for 8.2.1 are concerned,
 there are two possibile workarounds that seem to resolve the issue,
  * weakening `retry#`'s result demand to `topRes`
  * weakening `retryCatch#`'s first-argument demand to `lazyApply1Dmd`
 I suspect that neither of these are the right solution; in the end we
 should try to fix #13977 (unless, of course, I've horribly misunderstood
 something).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13916#comment:21>
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