[GHC] #15508: concprog001 fails with various errors when compiled with -prof

[GHC]

#15508: concprog001 fails with various errors when compiled with -prof
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        Reporter:  osa1              |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.6.1
       Component:  Profiling         |              Version:  8.5
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D5051
       Wiki Page:                    |
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Comment (by osa1):

 I wonder what would be a good sanity check for cost centre fields, e.g. a
 function `void checkCCS(CostCentreStack *ccs)` that can be used in
 `checkClosure` and to check `cap->r.rCCCS` maybe before every GC.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15508#comment:9>
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