[GHC] #11047: Provide call stacks in GHCi

[GHC]

#11047: Provide call stacks in GHCi
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        Reporter:  simonmar          |                Owner:  simonmar
            Type:  task              |               Status:  new
        Priority:  high              |            Milestone:  8.0.1
       Component:  GHCi              |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #545, #4837       |  Differential Rev(s):  Phab:D1407
       Wiki Page:                    |
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Comment (by gridaphobe):

 Ah, I haven't actually used the SCC-based stack traces in a while, so I'm
 probably just misremembering how they work.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11047#comment:6>
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