[GHC] #15375: GHC.Exts.Heap.getClosureData doesn't return the payload for AP_STACK

[GHC]

#15375: GHC.Exts.Heap.getClosureData doesn't return the payload for AP_STACK
-------------------------------------+-------------------------------------
           Reporter:  simonmar       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  low            |         Milestone:  8.6.1
          Component:  Runtime        |           Version:  8.4.3
  System                             |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 See Phab:D4955

 We used to return the payload, but a stack is a mixture of pointers and
 non-pointers, so this was bogus. In Phab:D4955 I changed it to ignore the
 payload, so now at least it doesn't crash, but we don't have any payload
 info.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15375>
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