[GHC] #10780: Weak reference is still alive if key is alive, but weak reference itself not reachable

[GHC]

#10780: Weak reference is still alive if key is alive, but weak reference itself
not reachable
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        Reporter:  atze              |                   Owner:  simonmar
            Type:  bug               |                  Status:  closed
        Priority:  normal            |               Milestone:
       Component:  Runtime System    |                 Version:  7.10.2
      Resolution:  wontfix           |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by simonmar):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 This is working as intended, see
 http://research.microsoft.com/apps/pubs/default.aspx?id=67497

 The paper includes an implementation of a memo table, which should help
 with the situation in HMap.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10780#comment:1>
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