[GHC] #13425: Semantically-equivalent expressions evaluating at different values with -O1

[GHC]

#13425: Semantically-equivalent expressions evaluating at different values with -O1
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        Reporter:  rbasso            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 I'll take a peek today.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13425#comment:2>
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