[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:  archblob
            Type:  bug               |                  Status:  patch
        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:  Phab:D938
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"892c3e98bcef50aa56ec818f4d001aee36e05bbc/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="892c3e98bcef50aa56ec818f4d001aee36e05bbc"
 Do not copy stack after stack overflow, refix #8435

 Summary:
 This was reverted in d70b19bfb5ed79b22c2ac31e22f46782fc47a117
 and is a part of the reason for #10445.

 Test Plan: validate

 Reviewers: ezyang, simonmar, austin

 Reviewed By: simonmar, austin

 Subscribers: bgamari, thomie

 Differential Revision: https://phabricator.haskell.org/D938

 GHC Trac Issues: #8435
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8435#comment:8>
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