[GHC] #13108: Improve poor Access Violation reporting on Windows

[GHC]

#13108: Improve poor Access Violation reporting on Windows
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           Reporter:  awson          |             Owner:
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:
  System                             |
           Keywords:                 |  Operating System:  Windows
       Architecture:                 |   Type of failure:  Poor/confusing
  Unknown/Multiple                   |  error message
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Currently all that we have is "Segmentation fault/access violation in
 generated code" message.

 My patch adds type (read/write/dep violation) and location information to
 the diagnostics. This may help tremendously when analyzing the problems.

 Please, apply.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13108>
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