[GHC] #11172: Turning on optimisations produces SEGFAULT or Impossible case alternative

[GHC]

#11172: Turning on optimisations produces SEGFAULT or Impossible case alternative
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        Reporter:  nh2               |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"0373a8458a9d5ed0732d06ffd082b939c11b6adc/ghc" 0373a84/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="0373a8458a9d5ed0732d06ffd082b939c11b6adc"
 Oops.  Add missing close-comment

 This fixes 514bac2 for Trac #11172.  Sorry!
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11172#comment:27>
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