[GHC] #10383: AArch64: get GHC Calling convention working

[GHC]

#10383: AArch64: get GHC Calling convention working
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        Reporter:  erikd                |                   Owner:  erikd
            Type:  feature request      |                  Status:  new
        Priority:  normal               |               Milestone:  7.12.1
       Component:  Compiler             |                 Version:  7.11
      Resolution:                       |                Keywords:
Operating System:  Unknown/Multiple     |            Architecture:  aarch64
 Type of failure:  Building GHC failed  |               Test Case:
      Blocked By:                       |                Blocking:
 Related Tickets:                       |  Differential Revisions:
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Comment (by rwbarton):

 That means the beginning of a closure (heap object) got overwritten with
 zeros somehow and it was discovered during garbage collection. Have you
 tried running with `-DS`? That might find the offender earlier.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10383#comment:5>
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