[GHC] #12019: Profiling option -hb is not thread safe

[GHC]

#12019: Profiling option -hb is not thread safe
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        Reporter:  erikd             |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #11978, #12009    |  Differential Rev(s):  Phab:D2516
       Wiki Page:                    |
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Changes (by bgamari):

 * owner:  erikd =>
 * status:  closed => new
 * resolution:  fixed =>
 * milestone:  8.0.2 =>


Comment:

 Reopening since this is still an issue; we just happen to fail more
 gracefully now.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12019#comment:9>
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