[GHC] #10845: Incorrect behavior when let binding implicit CallStack object

[GHC]

#10845: Incorrect behavior when let binding implicit CallStack object
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        Reporter:  nitromaster101    |                   Owner:  gridaphobe
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by simonpj):

 Eric, I see you've taken these implicit-call-stack tickets.  Excellent,
 thank you.  Please yell when you understand what is going on, and want to
 propose a solution.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10845#comment:5>
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