[GHC] #8435: Do not copy stack after stack overflow

[GHC]

#8435: Do not copy stack after stack overflow
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        Reporter:  ezyang            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:  7.10.2
       Component:  Runtime System    |                 Version:  7.7
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by archblob):

 * owner:  simonmar =>
 * status:  closed => new
 * resolution:  fixed =>
 * milestone:   => 7.10.2


Comment:

 This change was reverted in d70b19bfb5ed79b22c2ac31e22f46782fc47a117
 and is the reason for the difference between 7.10.1 and 7.8.4 outpus in
 #10445.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8435#comment:4>
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